CN102348269A - Method and device of uplink power control - Google Patents

Abstract

The embodiment of the invention relates to the technical field of wireless communication, particularly relates to a method and a device of the uplink power control, used for realizing the uplink power control of UE (user equipment) in a scene of inter-band CA. The method provided by the embodiment of the invention comprises the following steps: determining a transmitting power value of an uplink channel of each carrier wave by the user equipment; when the sum of the transmitting power values of all the uplink channels in all frequency bands is larger than the maximum transmitting power value allowed by the user equipment, reducing the power according to the maximum transmitting power value allowed by the user equipment and a power reduction proportionality factor corresponding to each frequency band so that the sum of the reduced transmitting power values of all uplink channels in all the frequency bands is not larger than the maximum transmitting power value allowed by the user equipment. The uplink power control of the UE can be realized in the scene of inter-band CA by adopting the method and the device provided by the embodiment of the invention.

Description

Method and equipment for controlling uplink power

Technical Field

The present invention relates to the field of wireless communications technologies, and in particular, to a method and a device for uplink power control.

Background

An LTE-a (Long Term Evolution-Advanced, Advanced) system introduces a CA (Carrier Aggregation) technology, as shown in fig. 1, the technology aggregates some frequency spectrums allocated to the existing system to use a large bandwidth, at this time, uplink and downlink carriers in the system may be asymmetrically configured, that is, a user may occupy N ≧ 1 Carrier for downlink transmission, and M ≧ 1 Carrier for uplink transmission.

The Carrier aggregation technology enables a terminal to simultaneously operate in multiple cells (cells), and for an FDD (Frequency Division Duplex) system, one cell includes one DL CC (Downlink Component Carrier) and one UL CC (uplink Component Carrier), and for a TDD (Time Division Duplex) system, one Carrier becomes one cell. Each component carrier in the carrier aggregation system may be continuous or discontinuous, and the bandwidth between the component carriers may be the same or different, and in order to maintain compatibility with an LTE (Long Term Evolution) system, the maximum bandwidth of each component carrier is limited to 20 MHz. LTE Rel-10 (release 10) specifies that a maximum of 5 DL CC aggregations can be supported, and only continuous carrier aggregation is supported in the uplink direction. In addition, LTE-a also classifies cells for carrier aggregation into: pcell (Primary Cell) and Scell (Secondary Cell). Only one cell among cells aggregated by a UE (User Equipment) is defined as a Pcell, and is selected by a base station and configured to a terminal through an RRC (Radio Resource Control) signaling, and pcells of different terminals may be different for implementing some specific functions and transmissions, such as transmission of a PUCCH (Physical uplink Control channel), a reference carrier (path loss reference) used for path loss measurement, transmission of a PRACH (Physical Random access channel), transmission of a SPS (Semi-Persistent Scheduling) service, and the like. Other cells except the Pcell for UE aggregation are all referred to as scells.

The uplink power control in the LTE-ARel-10 is performed on a per component carrier basis, and for different physical channels, the following is defined:

PUCCH (physical uplink control channel) transmission power:transmission power P used by UE for transmitting PUCCH channel in uplink subframe i_PUCCHCalculated by the formula:

<math> <mrow> <msub> <mi>P</mi> <mi>PUCCH</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>=</mo> <mi>min</mi> <mtable> </mtable> <mfenced open='{' close='}'> <mtable> <mtr> <mtd> <msub> <mi>P</mi> <mrow> <mi>CMAX</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>,</mo> </mtd> </mtr> <mtr> <mtd> <msub> <mi>P</mi> <mrow> <mn>0</mn> <mo>_</mo> <mi>PUCCH</mi> </mrow> </msub> <mo>+</mo> <msub> <mi>PL</mi> <mi>c</mi> </msub> <mo>+</mo> <mi>h</mi> <mrow> <mo>(</mo> <msub> <mi>n</mi> <mi>CQI</mi> </msub> <mo>,</mo> <msub> <mi>n</mi> <mi>HARQ</mi> </msub> <mo>,</mo> <msub> <mi>n</mi> <mi>SR</mi> </msub> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>&Delta;</mi> <mrow> <mi>F</mi> <mo>_</mo> <mi>PUCCH</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>F</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>&Delta;</mi> <mi>TxD</mi> </msub> <mrow> <mo>(</mo> <msup> <mi>F</mi> <mo>&prime;</mo> </msup> <mo>)</mo> </mrow> <mo>+</mo> <mi>g</mi> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> </mtd> </mtr> </mtable> </mfenced> <mo>[</mo> <mi>dBm</mi> <mo>]</mo> <mo>;</mo> </mrow> </math>

wherein: p_CMAX，c(i) Is the cell maximum transmission power in subframe i configured to cell c. Parameter Δ_{F_PUCCH}(F) Configured by a higher layer, the power offset corresponding to different PUCCH formats relative to PUCCHHform 1a, wherein the PUCCH formats comprise a plurality of PUCCH formats 1/1a/1b/2/2a/2 b/3. Delta_TxD(F') represents a transmit diversity power offset with respect to a single port transmit power, Δ if the UE is configured to transmit PUCCH on a 2-antenna port_TxD(F') configuring different PUCCH formats by a high-level signaling, and setting the value set as {0, -2} dB; otherwise, Δ_TxD(F′)＝0。h(n_CQI，n_HARQ，n_SR) Is the power offset related to the number of bits carried by the PUCCH, where n_CQICorresponding to the number of CQI bits, n, carried_HARQCorresponding to the number of ACK/NACK bits carried. P_{O_PUCCH}For transmitting power target value, by cell-specific part P_{O_NOMINAL_PUCCH}And UE-specific part P_{O_UE_PUCCH}The two parts are added to form the composite material. g (i) is a cumulative amount of power control command words,

wherein delta_PUCCHIs a UE-specific correction value for PUCCH, also called TPC (Transmit Power Control) command, and is included in DCI (Downlink Control Information) format 1A1B/1D/1/2A ^ based on the corresponding primary cell2/2B/2C PDCCH (Physical Downlink control channel), or PDCCH included in DCI format 3/3A and coded jointly with PUCCH power correction value specific to other UE, wherein CRC (cyclic redundancy Check) of PDCCH is scrambled by TPC-PUCCH-RNTI (TPC-PUCCH-radio network Temporary Identifier).

PUSCH (Physical Uplink Shared Channel) transmission power:

if the UE does not have PUCCH transmission in the subframe i, the UE transmits the transmission power P of the PUSCH on the serving cell c in the subframe i_PUSCH，c(i) Calculated according to the following formula:

<math> <mrow> <msub> <mi>P</mi> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>=</mo> <mi>min</mi> <mfenced open='{' close='}'> <mtable> <mtr> <mtd> <msub> <mi>P</mi> <mrow> <mi>CMAX</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>,</mo> </mtd> </mtr> <mtr> <mtd> <mn>10</mn> <msub> <mi>log</mi> <mn>10</mn> </msub> <mrow> <mo>(</mo> <msub> <mi>M</mi> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>P</mi> <mrow> <mi>O</mi> <mo>_</mo> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>j</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>&alpha;</mi> <mi>c</mi> </msub> <mrow> <mo>(</mo> <mi>j</mi> <mo>)</mo> </mrow> <mo>&CenterDot;</mo> <msub> <mi>PL</mi> <mi>c</mi> </msub> <mo>+</mo> <msub> <mi>&Delta;</mi> <mrow> <mi>TF</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>f</mi> <mi>c</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> </mtd> </mtr> </mtable> </mfenced> <mo>[</mo> <mi>dBm</mi> <mo>]</mo> </mrow> </math>

if the UE has PUCCH transmission in the subframe i, the UE transmits the transmission power P of the PUSCH on the serving cell c in the subframe i_PUSCH，c(i) Calculated according to the following formula:

<math> <mrow> <msub> <mi>P</mi> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>=</mo> <mi>min</mi> <mfenced open='{' close='}'> <mtable> <mtr> <mtd> <mn>10</mn> <msub> <mi>log</mi> <mn>10</mn> </msub> <mrow> <mo>(</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>CMAX</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>-</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>PUCCH</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>)</mo> </mrow> <mo>,</mo> </mtd> </mtr> <mtr> <mtd> <mn>10</mn> <msub> <mi>log</mi> <mn>10</mn> </msub> <mrow> <mo>(</mo> <msub> <mi>M</mi> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>P</mi> <mrow> <mi>O</mi> <mo>_</mo> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>j</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>&alpha;</mi> <mi>c</mi> </msub> <mrow> <mo>(</mo> <mi>j</mi> <mo>)</mo> </mrow> <mo>&CenterDot;</mo> <msub> <mi>PL</mi> <mi>c</mi> </msub> <mo>+</mo> <msub> <mi>&Delta;</mi> <mrow> <mi>TF</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>f</mi> <mi>c</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> </mtd> </mtr> </mtable> </mfenced> <mo>[</mo> <mi>dBm</mi> <mo>]</mo> <mo>;</mo> </mrow> </math>

wherein: p_CMAX，c(i) Is the maximum allowed transmit power of the UE on serving cell c in subframe i, configured by higher layers,

is P_CMAX，c(i) The linear threshold of (2).Transmitting power P for the PUCCH_PUCCH(i) The linear threshold of (2). M_PUSCH，c(i) Is the resource size of PUSCH on cell c of active subframe i, expressed in number of Resource Blocks (RBs). P_{O_PUSCH，c}(j) Is the initial value of the PUSCH power on the cell c, normalized by the cell specific normalization part P_{O_NOMINAL_PUSCH，c}(j) And UE-specific part P_{O_UE_PUSCH，c}(j) And (4) the sum of the components. Alpha is alpha_c(j) Is a path loss compensation factor of the serving cell c, which is a cell specific parameter and is transmitted by a higher layer signalLet pass 3bit indication; when j is 0 or 1, α_cBelongs to {0, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1 }; when j is 2, alpha_c(j) 1 (i.e. for PUSCH transmission for random access message 3, full path loss compensation is always used). PL is downlink path loss measured by the UE, and a downlink Cell (namely, SIB (System Information B1 ock) 2link Cell) or Pcell having a link relationship configured by a System with an uplink Cell where the PUSCH is located is determined according to a high-layer parameter pathloss reference linking (pathloss reference linking indication) for measurement. K_SWhen the content is equal to 1.25,

indicating that different Modulation and Coding Scheme (MCS) modes correspond to different power offsets; k_SWhen equal to 0, Δ_TF，c(i) 0 denotes the function of turning off the power regulation with the MCS, where K_SIs a UE specific parameter, indicated by higher layer signaling, for controlling Δ_TF，c(i) The value of (a). The bpre (bit Per Resource element) represents the corresponding bit number Per Resource element in the PUSCH,

(indicating the offset between the coding rate of the uplink control information carried on the PUSCH and the coding rate of the uplink data on the PUSCH, pre-configured by higher layer signaling). (i) there are two modes of accumulation mode and current absolute value mode for PUSCH power control adjustment quantity, if the UE is configured by high layer to start the accumulation value mode power adjustment of cell c or TPC command delta of cell c_PUSCH，cIncluded in the PDCCH having DCI format 0, where CRC is scrambled with TC-RNTI (Temporary Cell-Radio Network Temporary identifier), f_c(i)＝f_c(i-1)+δ_PUSCH，c(i-K_PUSCH) (ii) a If the high-level signaling configuration UE does not start the cumulative value mode power adjustment of the cell c, f_c(i)＝δ_PUSCH，c(i-K_PUSCH)，δ_PUSCH，cIs a UE-specific correction value for PUSCH, also known asThe TPC command is included in the PDCCH in DCI format 0/4 or included in the PDCCH in DCI format 3/3a and jointly encoded with other TPC commands, where CRC check bits of the PDCCH are scrambled by TPC-PUSCH-RNTI (TPC-PUSCH-Radio network temporary Identifier).

SRS (sounding reference signal) transmission power:

UE transmits the transmission power P required by the SRS transmitted by the cell c in the subframe i_SRSDefined by the following equation:

P_SRS，c(i)＝min{P_CMAX，c(i)，P_{SRS_OFFSET，c}(m)+10log₁₀(M_SRS，c)+P_{O_PUSCHc}(j)+α_c(j)·PL_c+f_c(i)}[dBm]；

wherein, P_{SRS_OFFSET，c}And (m) is a power offset of the SRS in different transmission modes (different antenna ports) on the cell c relative to the PUSCH, where m-0 corresponds to the periodic SRS and m-1 corresponds to the aperiodic SRS. M_SRS，cIs the SRS transmission bandwidth on cell c in subframe i, expressed in number of RBs (Resource B1 ock). The remaining parameters are the power control parameters for the PUSCH transmission on the cell.

Transmission power of PRACH (physical random access channel) channel:

the PRACH channel is only sent on the Pcell, and the transmitting power is calculated by the following formula:

PPRACH＝min{P_CMAX，c(i)，PREAMBLE_RECEIVED_TARGET_POWER+PL_c}_[dBm]；

wherein, P_CMAX，c(i) Is the maximum allowed transmit power for the UE in cell c. PL_cThe measured downlink path loss in the cell for the UE. The PREAMBLE _ RECEIVED _ TARGET _ POWER is calculated by a MAC (Medium Access Control) layer of the UE, and is notified to the UE as a PRACH TARGET POWER.

In addition, if the total transmission power of the UE in the current subframe i exceeds the maximum transmission power allowed by the UE, when power reduction is performed, the UE should preferentially ensure the transmission power of the PUCCH, and reduce the PUSCH transmission power on each cell c in equal proportion to meet the maximum transmission power of the UE:

<math> <mrow> <munder> <mi>&Sigma;</mi> <mi>c</mi> </munder> <mi>w</mi> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&CenterDot;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&le;</mo> <mrow> <mo>(</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>CMAX</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>-</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>PUCCH</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>)</mo> </mrow> <mo>;</mo> </mrow> </math>

wherein

Is P_PUCCH(i) The linear threshold value of (a) is,

is P_PUSCH，c(i) The linear threshold value of (a) is,maximum transmit power allowed for configured UEs P_CMAXFor the linear domain value of, w (i) for the PUS on each cell cA CH power reduction factor, w is more than or equal to 0 and less than or equal to 1 (i). If there is no PUCCH transmission in the current subframe i, then ${\hat{P}}_{\mathrm{PUCCH}}\left(i\right)=0.$

If there is PUSCH transmission for carrying UCI (Uplink control information) in a cell c' and PUSCH transmission for not carrying UCI in other serving cells in a current subframe i, and the total transmit power of the UE in the current subframe i exceeds the maximum transmit power allowed by the UE, when power is reduced, the UE should preferentially ensure that the transmit power of the PUSCH for carrying UCI is not reduced, and the UE needs to reduce the transmit power of each PUSCH for not carrying UCI in the current subframe i in equal proportion to fill the maximum transmit power of the UE:

<math> <mrow> <munder> <mi>&Sigma;</mi> <mrow> <mi>c</mi> <mo>&NotEqual;</mo> <msup> <mi>c</mi> <mo>&prime;</mo> </msup> </mrow> </munder> <mi>w</mi> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mi>g</mi> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&le;</mo> <mrow> <mo>(</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>CMAX</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>-</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <msup> <mi>C</mi> <mo>&prime;</mo> </msup> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>)</mo> </mrow> <mo>;</mo> </mrow> </math>

wherein,

for the linear domain value of the transmission power of the PUSCH carrying UCI, w (i) is the PUSCH power reduction factor on each serving cell c not carrying UCI, 0 ≦ w (i) ≦ 1. When the power of all PUSCHs not carrying UCI is reduced to 0, the total transmission power of the UE still exceeds the maximum allowed transmission power, and the power of the PUSCHs carrying UCI is further reduced.

If the UE simultaneously has PUCCH, PUSCH transmission bearing UCI and PUSCH transmission without UCI in the current subframe i, and the total transmitting power of the UE exceeds the maximum allowable transmitting power, the UE should preferentially ensure the transmitting power of the PUCCH, secondly ensure the transmitting power of the PUSCH bearing UCI, and reduce the PUSCH transmitting power on each cell c in equal proportion to meet the maximum transmitting power of the UE:

${\hat{P}}_{\mathrm{PUSCH},j}\left(i\right)=\min ({\hat{P}}_{\mathrm{PUSCH},i}\left(i\right),({\hat{P}}_{\mathrm{CMAX}}\left(i\right)-{\hat{P}}_{\mathrm{PUCCH}}\left(i\right)))$ and <math> <mrow> <munder> <mi>&Sigma;</mi> <mrow> <mi>c</mi> <mo>&NotEqual;</mo> <mi>j</mi> </mrow> </munder> <mi>w</mi> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&CenterDot;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&le;</mo> <mrow> <mo>(</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>CMAX</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>-</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>PUCCH</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>-</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>j</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>)</mo> </mrow> <mo>;</mo> </mrow> </math>

for the SRS transmitted simultaneously in multiple cells in the same subframe, if the total transmit power of the UE exceeds the maximum allowed transmit power, performing power reduction on the SRS in each cell in an equal proportion to satisfy the maximum transmit power of the UE:

<math> <mrow> <munder> <mi>&Sigma;</mi> <mi>c</mi> </munder> <mi>w</mi> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&CenterDot;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>SRS</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&le;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>CMAX</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>;</mo> </mrow> </math>

wherein

Is P_SRS，c(i) W (i) is the SRS power reduction factor on each cell c, 0 ≦ w (i) ≦ 1.

In LTE-ARel-11, multiple component carriers aggregated by a terminal supporting LTE-a CA technology may belong to different frequency bands, and the distance between the frequency bands to which the component carriers belong may also be relatively large, so that carrier aggregation in different frequency bands is called inter-band CA. As shown in fig. 2, the terminal aggregates three cells: cell1, Cell2, and Cell3, where Cell1 and Cell2 are at Band1 and Cell3 is at Band 2. The transmission characteristics of cells in different bands are different greatly, so if one terminal can aggregate multiple bands and different bands can support different TDD UL/DL configurations to avoid adjacent frequency interference, the terminal will generally use different transceivers for different bands.

Since it may happen that the total transmit power of the UE on all carriers exceeds the maximum allowed transmit power, there is no uplink power control scheme for the inter-band CA scenario.

Disclosure of Invention

The embodiment of the invention provides a method and equipment for controlling uplink power, which are used for realizing the uplink power control of UE (user equipment) in an inter-band CA (carrier access) scene.

The method for controlling the uplink power provided by the embodiment of the invention comprises the following steps:

the user equipment determines the transmitting power value of an uplink channel on each carrier;

the user equipment judges whether the sum of the transmitting power values of all uplink channels in all frequency bands is greater than the allowed maximum transmitting power value of the user equipment;

and when the user equipment judges that the sum of the transmission power values of the uplink channels in all the frequency bands is greater than the maximum allowed transmission power value of the user equipment, performing power reduction according to the maximum allowed transmission power value of the user equipment and the power reduction proportion coefficient value corresponding to each frequency band, so that the sum of the transmission power values of the uplink channels in all the frequency bands after power reduction is not greater than the maximum allowed transmission power value of the user equipment.

The method for transmitting the configuration information provided by the embodiment of the invention comprises the following steps:

the network side determines a reduction ratio coefficient value corresponding to each frequency band;

and the network side configures the determined reduction ratio coefficient value corresponding to each frequency band to the user equipment through high-layer signaling or PDCCH signaling.

The user equipment for controlling uplink power provided by the embodiment of the invention comprises:

a power determining module, configured to determine a transmission power value of an uplink channel on each carrier;

a judging module, configured to judge whether a sum of transmission power values of uplink channels in all frequency bands is greater than an allowed maximum transmission power value of the ue;

and the processing module is used for performing power reduction according to the allowed maximum transmitting power value of the user equipment and the power reduction proportion coefficient value corresponding to each frequency band when the sum of the transmitting power values of the uplink channels in all the frequency bands is judged to be larger than the allowed maximum transmitting power value of the user equipment, so that the sum of the transmitting power values of the uplink channels in all the frequency bands after power reduction is not larger than the allowed maximum transmitting power value of the user equipment.

The network side device for transmitting configuration information provided by the embodiment of the invention comprises:

a coefficient value determination module for determining a reduction ratio coefficient value corresponding to each frequency band;

and the configuration module is used for configuring the determined reduction ratio coefficient value corresponding to each frequency band to the user equipment through high-layer signaling or PDCCH signaling.

Because the uplink transmitting power can be reasonably distributed to different channels in the inter-band CA scene, the effective UE uplink power control is realized, and the condition that the transmission fails when the total transmitting power of the UE on all carriers exceeds the maximum allowable transmitting power is avoided, thereby improving the system performance.

Drawings

FIG. 1 is a schematic diagram of a spectrum polymerization system in the background art;

fig. 2 is a diagram illustrating different TDD uplink/downlink subframe configurations used by different bands in the background art;

fig. 3 is a flowchart illustrating a method for uplink power control according to an embodiment of the present invention;

fig. 4 is a flowchart illustrating a first method for reducing uplink power at the same rate according to an embodiment of the present invention;

fig. 5 is a flowchart illustrating a first method for reducing uplink power at different ratios according to an embodiment of the present invention;

fig. 6 is a flowchart illustrating a second uplink power control method for reducing the same ratio according to the embodiment of the present invention;

fig. 7 is a flowchart illustrating a second method for reducing uplink power at different ratios according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of a first inter-band CA in accordance with an embodiment of the present invention;

FIG. 9 is a schematic diagram of a second inter-band CA in accordance with an embodiment of the present invention;

FIG. 10 is a schematic diagram of a third inter-band CA in accordance with an embodiment of the present invention;

FIG. 11 is a flowchart illustrating a method for transmitting configuration information according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of a ue for uplink power control according to an embodiment of the present invention;

fig. 13 is a schematic structural diagram of a network device for transmitting configuration information according to an embodiment of the present invention.

Detailed Description

For the inter-band CA scenario, there is no uplink power control scheme, and in the embodiment of the present invention, the ue determines the transmission power value of the uplink channel on each carrier, determines whether the sum of the transmission power values of the uplink channels in all frequency bands is greater than the maximum allowed transmission power value of the ue, and when it is determined that the sum of the transmission power values of the uplink channels in all frequency bands is greater than the maximum allowed transmission power value of the ue, performs power reduction according to the maximum allowed transmission power value of the ue and a power reduction ratio coefficient value corresponding to each frequency band, so that the sum of the transmission power values of the uplink channels in all frequency bands after power reduction is not greater than the maximum allowed transmission power value of the ue. Because the uplink transmitting power can be reasonably distributed to different channels in the inter-band CA scene, the effective UE uplink power control is realized, and the condition that the transmission fails when the total transmitting power of the UE on all carriers exceeds the maximum allowable transmitting power is avoided, thereby improving the system performance.

The embodiments of the present invention will be described in further detail with reference to the drawings attached hereto.

In the LTE-a system, when carriers aggregated/activated by a UE belong to different frequency bands (bands), if the sum of the transmit powers of uplink channels on all carriers in the same and different bands exceeds the maximum transmit power allowed by the UE, the UE needs to perform power reduction to meet the requirement that the sum of the transmit powers of uplink channels on all carriers in the same and different bands does not exceed the maximum transmit power allowed by the UE, and a specific power reduction method is shown in fig. 3.

As shown in fig. 3, the method for controlling uplink power according to the embodiment of the present invention includes the following steps:

step 301, the user equipment determines the transmission power value of the uplink channel on each carrier according to the maximum transmission power value of each carrier and the power control parameter value corresponding to each carrier;

step 302, the user equipment judges whether the sum of the transmission power values of all uplink channels in all frequency bands is greater than the allowed maximum transmission power value of the user equipment;

step 303, when the ue determines that the sum of the transmission power values of the uplink channels in all frequency bands is greater than the maximum allowed transmission power value of the ue, performing power reduction according to the maximum allowed transmission power value of the ue and the power reduction ratio coefficient value corresponding to each frequency band, so that the sum of the transmission power values of the uplink channels in all frequency bands after power reduction is not greater than the maximum allowed transmission power value of the ue.

Preferably, when the ue determines that the sum of the transmission power values of the uplink channels in all frequency bands is not greater than the maximum allowed transmission power value of the ue, the ue sends the uplink channel according to the determined transmission power value of the uplink channel of each carrier in each frequency band.

In implementation, the power reduction ratio coefficient value corresponding to each frequency band is predetermined by the ue and the network side, or the network side configures the ue through a high layer signaling or a PDCCH (Physical Downlink control channel) signaling;

wherein, the power reduction ratio coefficient value corresponding to each frequency band is not more than 1 and not less than 0.

Preferably, the higher layer signaling includes, but is not limited to, at least one of the following:

RRC (Radio Resource Control) signaling and MAC (Medium access Control) signaling.

Preferably, the value of the power reduction ratio coefficient can be determined based on characteristics of different bands, such as frequency point position, bandwidth, channel state, configured transmission information type, service and the like.

Wherein, the power reduction ratio coefficient values corresponding to different frequency bands are the same or different;

when the power reduction scaling factor values for different frequency bands are the same, the power reduction scaling factor may not be configured or agreed upon.

Preferably, the ue performs power reduction on the uplink channels in sequence from low to high or from high to low according to the maximum allowed transmit power value of the ue and the power reduction ratio coefficient value corresponding to each frequency band, so that the sum of the transmit power values of the uplink channels in all frequency bands after power reduction is not greater than the maximum allowed transmit power value of the ue.

Preferably, the priority of the uplink channel is:

when there is no PRACH (Physical Random Access Channel) transmission, the priority of PUCCH (Physical Uplink Control Channel) is greater than the priority of PUSCH (Physical Uplink Shared Channel) carrying UCI (Uplink Control Information);

when PRACH transmission exists, the priority of PUCCH > the priority of PRACH > the priority of PUSCH carrying UCI > the priority of PUSCH not carrying UCI, or the priority of PRACH > the priority of PUCCH > the priority of PUSCH carrying UCI > the priority of PUSCH not carrying UCI. Preferably, other priority setting modes are not excluded.

In practice, there are many ways for the ue to adjust the power according to the power reduction ratio coefficient value, and some of them are listed below, and refer to fig. 4 to 7 in detail.

As shown in fig. 4, a first method for controlling uplink power to reduce the same ratio in the embodiment of the present invention includes the following steps:

step 401, the user equipment determines the transmission power value of the uplink channel on each carrier according to the maximum transmission power value of each carrier and the power control parameter value corresponding to each carrier;

step 402, the user equipment judges whether the sum of the transmission power values of all uplink channels in all frequency bands is greater than the allowed maximum transmission power value of the user equipment;

the user equipment may not perform power reduction according to the channel priority, or may perform power reduction according to the channel priority.

Power reduction is not performed according to channel priority: step 403, when the ue determines that the sum of the transmission power values of the uplink channels in all frequency bands is greater than the maximum allowed transmission power value of the ue, reducing the transmission power values of the uplink channels in all frequency bands in equal proportion, so that the sum of the transmission power values of the uplink channels in all frequency bands after power reduction is not greater than the maximum allowed transmission power value of the ue.

And power reduction is carried out according to the channel priority: step 403, the user equipment performs power reduction in equal proportion on the channels with the same channel priority in all frequency bands, so that the sum of the transmission power values of the uplink channels in all frequency bands after power reduction is not greater than the maximum allowed transmission power value of the user equipment.

If the power is reduced according to the channel priority, the method specifically includes:

when the power reduction scaling factor corresponding to each band is the same: based on the allowed maximum transmitting power and the channel priority of the UE, performing equal proportion power reduction on the channels with the same channel priority in all bands so as to ensure that the sum of the transmitting power of uplink channels on all carriers in all bands after power reduction does not exceed the allowed maximum transmitting power of the UE;

preferably, the equal proportional power reduction in step 403 is equivalent to that the power reduction proportional coefficient corresponding to each band (band) is the same, and in this case, the power reduction proportional coefficient corresponding to each band may not be configured, and the UE and the base station agree that the proportional coefficient is the same for all bands.

When the power is reduced based on the channel priority, the transmitting power of the channel with lower channel priority is reduced preferentially;

when the power in all bands is distributed, the priority of the channel is PUCCH > PUSCH carrying UCI > PUSCH not carrying UCI, namely, the transmitting power of the PUCCH is preferentially ensured not to be reduced, in available transmitting power except the transmitting power of the PUCCH, which is allowed by the UE, the power of the PUSCH carrying UCI is preferentially ensured not to be reduced, and the power of the rest PUSCHs not carrying UCI is reduced until the sum of the total transmitting power of all channels of the UE does not exceed the allowed maximum transmitting power of the UE;

or if there is PRACH transmission, the priority of power distribution in all bands is PUCCH > PRACH > PUSCH carrying UCI > PUSCH not carrying UCI, that is, the transmission power of PUCCH is preferentially ensured not to be reduced, the transmission power of PRACH is preferentially ensured not to be reduced in the available transmission power except the transmission power of PUCCH from the maximum transmission power allowed by UE, the power of PUSCH carrying UCI is preferentially ensured not to be reduced in the available transmission power except the transmission power of PUCCH and PRACH from the maximum transmission power allowed by UE, and the power of the rest PUSCHs not carrying UCI is reduced until the sum of the total transmission power of all channels of UE does not exceed the allowed maximum transmission power of UE; or PRACH > PUCCH > PUSCH carrying UCI > PUSCH not carrying UCI, namely, the emission power of the PRACH is preferentially ensured not to be reduced, the emission power of the PUCCH is preferentially ensured not to be reduced in the available emission power of the UE except the emission power of the PRACH, the emission power of the PUSCH not carrying UCI is preferentially ensured not to be reduced in the available emission power of the UE except the emission power of the PRACH and the PUCCH, and the power of the rest PUSCHs not carrying UCI is reduced until the sum of the total emission power of all channels of the UE does not exceed the allowable maximum emission power of the UE.

For example, in fig. 8, uplink transmission is performed on carrier 1 and carrier 2 in a UE aggregation band1, and carrier 3, carrier 4, and carrier 5 in a band2, each band is configured with a special carrier as a carrier for transmitting a PUCCH (i.e., each band is configured with an extended carrier E-cell, similar to Pcell in Rel-10), and the specific behavior of the UE is as follows:

the UE first calculates PUCCH transmit power P in band1 and band2 according to formula (1) and according to b-1 and b-2, respectively_PUCCH，1(i) And P_PUCCH，2(i) Wherein b is a band number;

and then, calculating the PUSCH transmission power P of the band1 and the band2 without simultaneous transmission of the PUCCH on one carrier according to the formula (2)_PUSCH，2(i)、P_PUSCH，4(i) And P_PUSCH，5(i)；

Calculating the PUSCH transmission power P of the band2 with the PUCCH on one carrier wave according to the formula (3)_PUSCH，3(i)；

<math> <mrow> <msub> <mi>P</mi> <mrow> <mi>PUCCH</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>=</mo> <mi>min</mi> <mtable> <mrow> <mfenced open='{' close='}'> <mtable> <mtr> <mtd> <msub> <mi>P</mi> <mrow> <mi>CMAX</mi> <mo>,</mo> <mi>c</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>,</mo> </mtd> </mtr> <mtr> <mtd> <msub> <mi>P</mi> <mrow> <mn>0</mn> <mo>_</mo> <mi>PUCCH</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mo>+</mo> <msub> <mi>PL</mi> <mrow> <mi>c</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mo>+</mo> <msub> <mi>h</mi> <mi>b</mi> </msub> <mrow> <mo>(</mo> <msub> <mi>n</mi> <mi>CQI</mi> </msub> <mo>,</mo> <msub> <mi>n</mi> <mi>HARQ</mi> </msub> <mo>,</mo> <msub> <mi>n</mi> <mi>SR</mi> </msub> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>&Delta;</mi> <msub> <mrow> <mi>F</mi> <mo>_</mo> <mi>PUCCH</mi> </mrow> <mi>b</mi> </msub> </msub> <mrow> <mo>(</mo> <mi>F</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>&Delta;</mi> <mi>TxDb</mi> </msub> <mrow> <mo>(</mo> <msup> <mi>F</mi> <mo>&prime;</mo> </msup> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>g</mi> <mi>b</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> </mtd> </mtr> </mtable> </mfenced> </mrow> </mtable> </mrow> </math> Formula (1);

<math> <mrow> <msub> <mi>P</mi> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>=</mo> <mi>min</mi> <mfenced open='{' close='}'> <mtable> <mtr> <mtd> <msub> <mi>P</mi> <mrow> <mi>CMAX</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>,</mo> </mtd> </mtr> <mtr> <mtd> <mn>10</mn> <msub> <mi>log</mi> <mn>10</mn> </msub> <mrow> <mo>(</mo> <msub> <mi>M</mi> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>P</mi> <mrow> <mi>O</mi> <mo>_</mo> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>j</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>&alpha;</mi> <mi>c</mi> </msub> <mrow> <mo>(</mo> <mi>j</mi> <mo>)</mo> </mrow> <mo>&CenterDot;</mo> <msub> <mi>PL</mi> <mi>c</mi> </msub> <mo>+</mo> <msub> <mi>&Delta;</mi> <mrow> <mi>TF</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>f</mi> <mi>c</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> </mtd> </mtr> </mtable> </mfenced> </mrow> </math> formula (2);

<math> <mrow> <msub> <mi>P</mi> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>=</mo> <mi>min</mi> <mfenced open='{' close='}'> <mtable> <mtr> <mtd> <msub> <mrow> <mn>10</mn> <mi>log</mi> </mrow> <mn>10</mn> </msub> <mrow> <mo>(</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>CMAX</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>-</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>PUCCH</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>)</mo> </mrow> <mo>,</mo> </mtd> </mtr> <mtr> <mtd> <msub> <mrow> <mn>10</mn> <mi>log</mi> </mrow> <mn>10</mn> </msub> <mrow> <mo>(</mo> <msub> <mi>M</mi> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>P</mi> <mrow> <mi>O</mi> <mo>_</mo> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>j</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>&alpha;</mi> <mi>c</mi> </msub> <mrow> <mo>(</mo> <mi>j</mi> <mo>)</mo> </mrow> <mo>&CenterDot;</mo> <msub> <mi>PL</mi> <mi>c</mi> </msub> <mo>+</mo> <msub> <mi>&Delta;</mi> <mrow> <mi>TF</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>f</mi> <mi>c</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> </mtd> </mtr> </mtable> </mfenced> </mrow> </math> equation (3).

The UE further determines whether the sum of the transmit powers of the uplink channels on all carriers in all bands exceeds the maximum transmit power allowed by the UE:

when judging ${\hat{P}}_{\mathrm{PUCCH},1}\left(i\right)+{\hat{P}}_{\mathrm{PUSCH},2}\left(i\right)+{\hat{P}}_{\mathrm{PUCCH},2}\left(i\right)+{\hat{P}}_{\mathrm{PUSCH},3}\left(i\right)+{\hat{P}}_{\mathrm{PUSCH},4}\left(i\right)+{\hat{P}}_{\mathrm{PUSCH},5}\left(i\right)>{\hat{P}}_{\mathrm{CMAX}}\left(i\right)$ In time, power reduction is required, and assuming that power reduction is performed based on channel priority, the method specifically includes:

the UE preferentially ensures that the transmitting power of the PUCCH is not reduced for all channels in all bands, preferentially sends the residual UE power to the PUSCH carrying UCI, and reduces the power with the same proportion for the channels with the same low priority (such as the PUSCH not carrying UCI);

in particular, if

Wherein j is 2 and 3, that is, the total transmission power of the PUSCH carrying the UCI exceeds the remaining UE power, then performing power reduction on the PUSCH carrying the UCI in an equal proportion according to formula (4) to meet the requirement that the total transmission power of all channels does not exceed the maximum transmission power allowed by the UE, where j is 2 and 3, and b is a band number; in formula (4), w (i) is a power reduction coefficient, the value is the same for all PUSCHs, and w (i) of a specific PUSCH can be 0 (i.e., power can be reduced to 0); the UE sends each uplink channel according to the transmission power after the power is reduced, and determines not to send PUSCHs (namely the transmission power of the PUSCHs is reduced to 0) which do not bear UCI in the current subframe;

<math> <mrow> <munder> <mi>&Sigma;</mi> <mi>j</mi> </munder> <mi>w</mi> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&CenterDot;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>j</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&le;</mo> <mrow> <mo>(</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>CMAX</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>-</mo> <munder> <mi>&Sigma;</mi> <mi>b</mi> </munder> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUCCH</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>)</mo> </mrow> </mrow> </math> formula (4);

if it is not

Wherein J is 2 and 3, that is, the total transmission power of the PUSCH carrying the UCI does not exceed the remaining UE power, so that the PUSCH carrying the UCI does not need to be subjected to power reduction, and further, the PUSCH not carrying the UCI is subjected to power reduction in an equal proportion according to formula (5) so as to satisfy that the total transmission power of all channels does not exceed the maximum transmission power allowed by the UE, wherein J is 2 and 3, and b is a band number; in formula (5), w (i) is a power reduction coefficient, the value is the same for all PUSCHs, and w (i) of a specific PUSCH can be 0 (i.e., power can be reduced to 0); the UE sends each uplink channel according to the transmitting power after the power is reduced;

<math> <mrow> <munder> <mi>&Sigma;</mi> <mrow> <mi>c</mi> <mo>&NotEqual;</mo> <mi>j</mi> </mrow> </munder> <mi>w</mi> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&CenterDot;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&le;</mo> <mrow> <mo>(</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>CMAX</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>-</mo> <munder> <mi>&Sigma;</mi> <mi>b</mi> </munder> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUCCH</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>-</mo> <munder> <mi>&Sigma;</mi> <mi>j</mi> </munder> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>j</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>)</mo> </mrow> </mrow> </math> formula (5);

wherein, <math> <mrow> <munder> <mi>&Sigma;</mi> <mi>j</mi> </munder> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>j</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>=</mo> <mi>min</mi> <mrow> <mo>(</mo> <munder> <mi>&Sigma;</mi> <mi>j</mi> </munder> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>j</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>,</mo> <mrow> <mo>(</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>CMAX</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>-</mo> <munder> <mi>&Sigma;</mi> <mi>b</mi> </munder> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUCCH</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>)</mo> </mrow> <mo>)</mo> </mrow> <mo>.</mo> </mrow> </math>

when judging <math> <mrow> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUCCH</mi> <mo>,</mo> <mn>1</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>2</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUCCH</mi> <mo>,</mo> <mn>2</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>3</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>4</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>5</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&le;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>CMAX</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> </mrow> </math> The transmission may be directly in accordance with the calculated power on each of the plurality of bands.

It should be noted that, in the above embodiments, when there is no PUCCH transmission,

when there is no PUSCH transmission carrying UCI,the above process is equally applicable; in the above process

Is P_X(i) The linear threshold of (2).

For another example, in fig. 9, the UE aggregates carrier 1, carrier 2, and carrier 3 in band1, and carries 4 and carrier 5 in band2 for uplink transmission, there is only one Pcell PUCCH transmission in multiple bands, and the specific behavior of the UE is as follows:

the UE firstly calculates PUCCH transmit power P in band1 according to formula (1) b ═ 1_PUCCH(i) Wherein b is a band number; calculating the PUSCH transmission power P on the corresponding carrier waves in the band1 and the band2 according to the formula (2)_PUSCH，2(i)、P_PUSCH，3(i)、P_PUSCH，4(i) And P_PUSCH，5(i)；

The UE further determines whether the sum of the transmit power values of the uplink channels on all carriers in all bands exceeds the maximum transmit power value allowed by the UE:

when judging ${\hat{P}}_{\mathrm{PUCCH}}\left(i\right)+{\hat{P}}_{\mathrm{PUSCH},2}\left(i\right)+{\hat{P}}_{\mathrm{PUSCH},3}\left(i\right)+{\hat{P}}_{\mathrm{PUSCH},4}\left(i\right)+{\hat{P}}_{\mathrm{PUSCH},5}\left(i\right)>{\hat{P}}_{\mathrm{CMAX}}\left(i\right)$ In time, power reduction is required, and assuming that power reduction is performed based on channel priority, the method specifically includes:

firstly, ensuring the transmitting power of PUCCH, distributing the residual UE power to the PUSCH carrying UCI, and carrying out equal proportion power reduction on the PUSCH not carrying UCI according to a formula (6) so as to meet the requirement that the total transmitting power of all channels does not exceed the maximum transmitting power allowed by the UE, wherein j is 2, and b is a band number; in equation (6), w (i) is a power reduction coefficient, the value is the same for all PUSCHs, and w (i) for a particular PUSCH can be 0 (i.e., power can be reduced to 0); the UE sends each uplink channel according to the transmitting power after the power is reduced;

<math> <mrow> <munder> <mi>&Sigma;</mi> <mrow> <mi>c</mi> <mo>&NotEqual;</mo> <mi>j</mi> </mrow> </munder> <mi>w</mi> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&CenterDot;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&le;</mo> <mrow> <mo>(</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>CMAX</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>-</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>PUCCH</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>-</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>j</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>)</mo> </mrow> </mrow> </math> formula (6);

wherein, ${\hat{P}}_{\mathrm{PUSCH},j}\left(i\right)=\min ({\hat{P}}_{\mathrm{PUSCH},j}\left(i\right),({\hat{P}}_{\mathrm{CMAX}}\left(i\right)-{\hat{P}}_{\mathrm{PUCCH}}\left(i\right))).$

when judging ${\hat{P}}_{\mathrm{PUCCH}}\left(i\right)+{\hat{P}}_{\mathrm{PUSCH},2}\left(i\right)+{\hat{P}}_{\mathrm{PUSCH},3}\left(i\right)+{\hat{P}}_{\mathrm{PUSCH},4}\left(i\right)+{\hat{P}}_{\mathrm{PUSCH},5}\left(i\right)>{\hat{P}}_{\mathrm{CMAX}}\left(i\right)$ When the power is not calculated, the power can be directly transmitted according to the calculated power on each carrier in the plurality of bands;

it should be noted that, in the above embodiments, when there is no PUCCH transmission,

when there is no PUSCH transmission carrying UCI,

the above process is equally applicable; in the above process

Is P_X(i) The linear threshold of (2).

In the above example of performing equal-proportion power reduction in fig. 8 and fig. 9, for the scheme of performing power reduction not based on channel priority, it is not necessary to distinguish priorities of different channels, and power is reduced for all channels at the same time, which is not described herein again.

For another example, in fig. 10, the UE aggregates carrier 1 and carrier 2 in band1 and carrier 3 and carrier 4 in band2 for uplink transmission, and the specific behavior of the UE is as follows:

the UE firstly calculates the SRS (reference signal for sounding) transmission power P on each carrier in the band1 and the band2 according to the formula (7)_SRS，1、P_SRS，2、P_SRS，3And P_SRS，4；P_SRS，c(i)＝min{P_CMAX，c(i)，P_{SRS_OFFSET，c}(m)+10log₁₀(M_SRS，c)+P_{O_PUSCH，c}(j)+α_c(j)·PL_c+f_c(i) Formula (7);

the UE further determines whether the sum of the SRS transmit powers on all carriers in all bands exceeds the maximum transmit power allowed by the UE:

is judged when ${\hat{P}}_{\mathrm{SRS},1}\left(i\right)+{\hat{P}}_{\mathrm{SRS},2}\left(i\right)+{\hat{P}}_{\mathrm{SRS},3}\left(i\right)+{\hat{P}}_{\mathrm{SRS},4}\left(i\right)>{\hat{P}}_{\mathrm{CMAX}}\left(i\right)$ In this case, power reduction is needed, and since there is only one signal in fig. 10, power reduction is not performed based on channel priority, which specifically includes:

carrying out equal proportion power reduction on the plurality of SRS according to a formula (8) so as to meet the requirement that the total transmission power of all channels does not exceed the maximum transmission power allowed by the UE, wherein b is a band number; in equation (8), w (i) is a power reduction coefficient, and the value is the same for all SRS (including periodic SRS and aperiodic SRS); the UE sends each uplink channel according to the transmitting power after the power is reduced;

<math> <mrow> <munder> <mi>&Sigma;</mi> <mi>c</mi> </munder> <mi>w</mi> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&CenterDot;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>SRS</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&le;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>CMAX</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> </mrow> </math> equation (8).

When judging <math> <mrow> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>SRS</mi> <mo>,</mo> <mn>1</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>SRS</mi> <mo>,</mo> <mn>2</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>SRS</mi> <mo>,</mo> <mn>3</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>SRS</mi> <mo>,</mo> <mn>4</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&le;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>CMAX</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> </mrow> </math> When the power is not calculated, the power can be directly calculated according to the SRS on each carrier wave in the plurality of bands to be transmitted;

it should be noted that, when the SRS in this embodiment is replaced with a PUSCH, PUCCH, or PRACH channel, the method is also applicable, that is, equivalent to a scheme of performing power reduction without based on channel priority; in the above process

Is P_X(i) The linear threshold of (2).

As shown in fig. 5, a first method for reducing uplink power at different ratios according to an embodiment of the present invention includes the following steps:

step 501, the user equipment determines the transmission power value of the uplink channel on each carrier according to the maximum transmission power value of each carrier and the power control parameter value corresponding to each carrier;

step 502, the user equipment judges whether the sum of the transmission power values of all uplink channels in all frequency bands is greater than the allowed maximum transmission power value of the user equipment;

the user equipment may not perform power reduction according to the channel priority, or may perform power reduction according to the channel priority.

Power reduction is not performed according to channel priority: step 503, the user equipment performs power reduction on each uplink channel in different frequency bands according to the power reduction proportion coefficient corresponding to the frequency band in which the uplink channel is located, and performs equal proportion power reduction on each uplink channel in the same frequency band, so that the sum of the transmission power values of each uplink channel in all frequency bands after power reduction is not greater than the maximum allowed transmission power value of the user equipment.

And power reduction is carried out according to the channel priority: step 503, the user equipment performs power reduction on the uplink channels with the same priority in different frequency bands according to the power reduction proportion coefficient corresponding to the frequency band in which the uplink channel is located, and performs power reduction on the uplink channels with the same channel priority in the same frequency band in an equal proportion, so that the sum of the transmission power values of the uplink channels in all frequency bands after power reduction is not greater than the maximum allowed transmission power value of the user equipment.

If the power is reduced according to the channel priority, the method specifically includes:

when the power reduction proportionality coefficients corresponding to each band are different: based on the maximum transmitting power allowed by the UE and the priority of the channel, performing power reduction on uplink channels with the same priority in different bands according to power reduction proportion coefficients corresponding to the bands, and performing equal proportion power reduction on the channels with the same channel priority in the same band so as to ensure that the sum of the transmitting power of all carriers in all bands after power reduction does not exceed the maximum transmitting power allowed by the UE;

preferably, in the method for performing power reduction based on the power reduction scaling factor corresponding to the frequency band in step 503, when the power reduction scaling factor corresponding to each band is the same, for equal-scale power reduction, the power reduction scaling factor corresponding to each band may not be configured, and the UE and the base station agree that the scaling factor is the same for all bands; when the power reduction proportion coefficient corresponding to each band is different, the power reduction is non-equal proportion power reduction, and the power reduction coefficient is predetermined by the UE and the base station, or the base station configures the UE through high-level signaling or PDCCH signaling.

When the power is reduced based on the channel priority, the transmitting power of the channel with lower channel priority is reduced preferentially;

when the power in all bands is distributed, the priority of the channel is PUCCH > PUSCH carrying UCI > PUSCH not carrying UCI, namely, the transmitting power of the PUCCH is preferentially ensured not to be reduced, in available transmitting power except the transmitting power of the PUCCH, which is allowed by the UE, the power of the PUSCH carrying UCI is preferentially ensured not to be reduced, and the power of the rest PUSCHs not carrying UCI is reduced until the sum of the total transmitting power of all channels of the UE does not exceed the allowed maximum transmitting power of the UE;

or if there is PRACH transmission, the priority of power distribution in all bands is PUCCH > PRACH > PUSCH carrying UCI > PUSCH not carrying UCI, that is, the transmission power of PUCCH is preferentially ensured not to be reduced, the transmission power of PRACH is preferentially ensured not to be reduced in the available transmission power except the transmission power of PUCCH from the maximum transmission power allowed by UE, the power of PUSCH carrying UCI is preferentially ensured not to be reduced in the available transmission power except the transmission power of PUCCH and PRACH from the maximum transmission power allowed by UE, and the power of the rest PUSCHs not carrying UCI is reduced until the sum of the total transmission power of all channels of UE does not exceed the allowed maximum transmission power of UE; or PRACH > PUCCH > PUSCH carrying UCI > PUSCH not carrying UCI, namely, the emission power of the PRACH is preferentially ensured not to be reduced, the emission power of the PUCCH is preferentially ensured not to be reduced in the available emission power of the UE except the emission power of the PRACH, the emission power of the PUSCH not carrying UCI is preferentially ensured not to be reduced in the available emission power of the UE except the emission power of the PRACH and the PUCCH, and the power of the rest PUSCHs not carrying UCI is reduced until the sum of the total emission power of all channels of the UE does not exceed the allowable maximum emission power of the UE.

For example, in fig. 8, uplink transmission is performed on carrier 1 and carrier 2 in a UE aggregation band1, and carrier 3, carrier 4, and carrier 5 in a band2, each band is configured with a special carrier as a carrier for transmitting a PUCCH (i.e., each band is configured with an extended carrier E-cell, similar to Pcell in Rel-10), and the specific behavior of the UE is as follows:

the UE first calculates PUCCH transmit power P in band1 and band2 according to formula (1) and according to b-1 and b-2, respectively_PUCCH，1(i) And P_PUCCH，2(i) Wherein b is a band number;

and then, calculating the PUSCH transmission power P of the band1 and the band2 without simultaneous transmission of the PUCCH on one carrier according to the formula (2)_PUSCH，2(i)、P_PUSCH，4(i) And P_PUSCH，5(i)；

Calculating the PUSCH transmission power P of the band2 with the PUCCH on one carrier wave according to the formula (3)_PUSCH，3(i)；

The UE further determines whether the sum of the transmit powers of the uplink channels on all carriers in all bands exceeds the maximum transmit power allowed by the UE:

when judging ${\hat{P}}_{\mathrm{PUCCH},1}\left(i\right)+{\hat{P}}_{\mathrm{PUSCH},2}\left(i\right)+{\hat{P}}_{\mathrm{PUCCH},2}\left(i\right)+{\hat{P}}_{\mathrm{PUSCH},3}\left(i\right)+{\hat{P}}_{\mathrm{PUSCH},4}\left(i\right)+{\hat{P}}_{\mathrm{PUSCH},5}\left(i\right)>{\hat{P}}_{\mathrm{CMAX}}\left(i\right)$ In time, power reduction is required, and assuming that power reduction is performed based on channel priority, the method specifically includes:

the UE preferentially ensures that the transmitting power of the PUCCH is not reduced for all channels in all bands, the remaining UE power preferentially meets the PUSCH carrying UCI for transmission, and the power is reduced for the channels with the same low priority (such as the PUSCH not carrying UCI) according to a specific power reduction coefficient;

in particular, ifIf j is 2 and 3, that is, the total transmission power of the PUSCH carrying the UCI exceeds the remaining UE power, performing power reduction based on a specific power reduction coefficient on the PUSCH carrying the UCI according to formula (9), so as to satisfy that the total transmission power of all channels does not exceed the maximum transmission power allowed by the UE, where j is 2 and 3, and b is a band number; in formula (9), w_b(i) For the power reduction coefficient of PUSCH in different bands, where b is the band number, the PUSCH in different bands may be different (for PUSCH in some specific bands its w is_b(i) May be configured or may be defined as 1, i.e. not power down), the PUSCH in the same band corresponds to the same w_b(i) Configuring by a high-level signaling or a PDCCH signaling, or appointing in advance for the UE and the base station that the UE sends each uplink channel according to the transmission power after the power is reduced, and determining not to send PUSCHs (namely the transmission power of the PUSCHs is reduced to 0) which do not bear UCI in the current subframe;

<math> <mrow> <munder> <mi>&Sigma;</mi> <mrow> <mi>j</mi> <mo>,</mo> <mi>b</mi> </mrow> </munder> <msub> <mi>w</mi> <mi>b</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&CenterDot;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>j</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&le;</mo> <mrow> <mo>(</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>CMAX</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>-</mo> <munder> <mi>&Sigma;</mi> <mi>b</mi> </munder> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUCCH</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>)</mo> </mrow> </mrow> </math> formula (9);

if it is not

Wherein j is 2 and 3, that is, the total transmission power of the PUSCH carrying UCI does not exceed the remaining UE power, so that power reduction of the PUSCH carrying UCI is not required, and further power reduction based on a specific power reduction coefficient is performed on the PUSCH not carrying UCI according to formula (10) so as to satisfy that the total transmission power of all channels does not exceed the maximum transmission power allowed by the UE, wherein j is 2 and 3, and b is a band number, and in formula (10), w is w_b(i) For the power reduction coefficient of PUSCH in different bands, where b is the band number, the PUSCH in different bands may be different (for PUSCH in some specific bands its w is_b(i) May be configured or may be defined as 1, i.e. not power down), the PUSCH in the same band corresponds to the same w_b(i) The configuration is carried out by high-level signaling or PDCCH signaling, or the UE and the base station are appointed in advance; the UE sends each uplink channel according to the transmitting power after the power is reduced;

<math> <mrow> <munder> <mi>&Sigma;</mi> <mrow> <mi>c</mi> <mo>&NotEqual;</mo> <mi>j</mi> <mo>,</mo> <mi>b</mi> </mrow> </munder> <msub> <mi>w</mi> <mi>b</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&CenterDot;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&le;</mo> <mrow> <mo>(</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>CMAX</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>-</mo> <munder> <mi>&Sigma;</mi> <mi>b</mi> </munder> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUCCH</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>-</mo> <munder> <mi>&Sigma;</mi> <mrow> <mi>j</mi> <mo>,</mo> <mi>b</mi> </mrow> </munder> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>j</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>)</mo> </mrow> </mrow> </math> equation (10);

wherein, <math> <mrow> <munder> <mi>&Sigma;</mi> <mrow> <mi>j</mi> <mo>,</mo> <mi>b</mi> </mrow> </munder> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>j</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>=</mo> <mi>min</mi> <mrow> <mo>(</mo> <munder> <mi>&Sigma;</mi> <mrow> <mi>j</mi> <mo>,</mo> <mi>b</mi> </mrow> </munder> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>j</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>,</mo> <mrow> <mo>(</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>CMAX</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>-</mo> <munder> <mi>&Sigma;</mi> <mi>b</mi> </munder> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUCCH</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>)</mo> </mrow> <mo>)</mo> </mrow> <mo>.</mo> </mrow> </math>

when judging <math> <mrow> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUCCH</mi> <mo>,</mo> <mn>1</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>2</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUCCH</mi> <mo>,</mo> <mn>2</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>3</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>4</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>5</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&le;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>CMAX</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> </mrow> </math> The transmission may be directly in accordance with the calculated power on each of the plurality of bands.

It should be noted that, in the above embodiments, when there is no PUCCH transmission,

when it is not presentWhen the PUSCH carrying the UCI is transmitted,

the above process is equally applicable; in the above processIs P_X(i) The linear threshold of (2).

For another example, in fig. 9, the UE aggregates carrier 1, carrier 2, and carrier 3 in band1, and carries 4 and carrier 5 in band2 for uplink transmission, there is only one Pcell PUCCH transmission in multiple bands, and the specific behavior of the UE is as follows:

the UE firstly calculates PUCCH transmit power P in band1 according to formula (1) b ═ 1_PUCCH(i) Wherein b is a band number; calculating the PUSCH transmission power P on the corresponding carrier waves in the band1 and the band2 according to the formula (2)_PUSCH，2(i)、P_PUSCH，3(i)、P_PUSCH，4(i) And P_PUSCH，5(i)；

The UE further determines whether the sum of the transmit power values of the uplink channels on all carriers in all bands exceeds the maximum transmit power value allowed by the UE:

when judging ${\hat{P}}_{\mathrm{PUCCH}}\left(i\right)+{\hat{P}}_{\mathrm{PUSCH},2}\left(i\right)+{\hat{P}}_{\mathrm{PUSCH},3}\left(i\right)+{\hat{P}}_{\mathrm{PUSCH},4}\left(i\right)+{\hat{P}}_{\mathrm{PUSCH},5}\left(i\right)>{\hat{P}}_{\mathrm{CMAX}}\left(i\right)$ In time, power reduction is required, and assuming that power reduction is performed based on channel priority, the method specifically includes:

firstly, ensuring the transmission power of PUCCH, distributing the residual UE power to PUSCH carrying UCI, and carrying out power reduction based on a specific power reduction coefficient on PUSCH not carrying UCI according to a formula (11) so as to meet the requirement that the total transmission power of all channels does not exceed the maximum transmission power allowed by UE, wherein j is 2, and b is a band number; in formula (11), w_b(i) For the power reduction coefficient of PUSCH in different bands, where b is the band number, the PUSCH in different bands may be different (for PUSCH in some specific bands its w is_b(i) May be configured or may be defined as 1, i.e. not power down), the PUSCH in the same band corresponds to the same w_b(i) The configuration is carried out by high-level signaling or PDCCH signaling, or the UE and the base station are appointed in advance; the UE sends each uplink channel according to the transmitting power after the power is reduced;

<math> <mrow> <munder> <mi>&Sigma;</mi> <mrow> <mi>c</mi> <mo>&NotEqual;</mo> <mi>j</mi> <mo>,</mo> <mi>b</mi> </mrow> </munder> <msub> <mi>w</mi> <mi>b</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&CenterDot;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&le;</mo> <mrow> <mo>(</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>CMAX</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>-</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUCCH</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>-</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>j</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>)</mo> </mrow> </mrow> </math> formula (11);

wherein, ${\hat{P}}_{\mathrm{PUSCH},j,b}\left(i\right)=\min ({\hat{P}}_{\mathrm{PUSCH},j,b}\left(i\right),({\hat{P}}_{\mathrm{CMAX}}\left(i\right)-{\hat{P}}_{\mathrm{PUCCH},b}\left(i\right))).$

when judging <math> <mrow> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>PUCCH</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>2</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>3</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>4</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>5</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&le;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>CMAX</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> </mrow> </math> When the power is not calculated, the power can be directly transmitted according to the calculated power on each carrier in the plurality of bands;

it should be noted that, in the above embodiments, when there is no PUCCH transmission,

when there is no PUSCH transmission carrying UCI,the above process is equally applicable; in the above process

Is P_X(i) The linear threshold of (2).

For the above-mentioned examples of performing non-equal-proportion power reduction in fig. 8 and fig. 9, for the scheme of performing power reduction not based on channel priority, it is not necessary to distinguish priorities of different channels, and power is reduced for all channels at the same time, which is not described herein again.

For another example, in fig. 10, the UE aggregates carrier 1 and carrier 2 in band1 and carrier 3 and carrier 4 in band2 for uplink transmission, and the specific behavior of the UE is as follows:

the UE firstly calculates SRS transmission power P on each carrier in band1 and band2 according to formula (7)_SRS，1、P_SRS，2、P_SRS，3And P_SRS，4；

P_SRS，c(i)＝min{P_CMAX，c(i)，P_{SRS_OFFSET，c}(m)+10log₁₀(M_SRS，c)+P_{O_PUSCH，c}(j)+α_c(j)·PL_c+f_c(i) Formula (7);

the UE further determines whether the sum of the SRS transmit powers on all carriers in all bands exceeds the maximum transmit power allowed by the UE:

is judged when ${\hat{P}}_{\mathrm{SRS},1}\left(i\right)+{\hat{P}}_{\mathrm{SRS},2}\left(i\right)+{\hat{P}}_{\mathrm{SRS},3}\left(i\right)+{\hat{P}}_{\mathrm{SRS},4}\left(i\right)>{\hat{P}}_{\mathrm{CMAX}}\left(i\right)$ In this case, power reduction is needed, and since there is only one signal in fig. 10, power reduction is not performed based on channel priority, which specifically includes:

performing power reduction based on a specific power reduction coefficient on the plurality of SRSs according to formula (12) so as to satisfy that the total transmission power of all channels does not exceed the maximum transmission power allowed by the UE, wherein b is a band number; in the formula (12), w_b(i) For SRS in different bands with power reduction factor,where b is the band number, which may be different for SRSs in different bands (w for SRSs in some particular bands)_b(i) May be configured or may be defined as 1, i.e., not powered down), SRSs in the same band correspond to the same w_b(i) The configuration is carried out by high-level signaling or PDCCH signaling, or the UE and the base station are appointed in advance; the UE sends each uplink channel according to the transmitting power after the power is reduced;

<math> <mrow> <munder> <mi>&Sigma;</mi> <mrow> <mi>c</mi> <mo>,</mo> <mi>b</mi> </mrow> </munder> <msub> <mi>w</mi> <mi>b</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&CenterDot;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>SRS</mi> <mo>,</mo> <mi>c</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&le;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>CMAX</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> </mrow> </math> equation (12).

When judging <math> <mrow> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>SRS</mi> <mo>,</mo> <mn>1</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>SRS</mi> <mo>,</mo> <mn>2</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>SRS</mi> <mo>,</mo> <mn>3</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>SRS</mi> <mo>,</mo> <mn>4</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&le;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>CMAX</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> </mrow> </math> When the power is not calculated, the power can be directly calculated according to the SRS on each carrier wave in the plurality of bands to be transmitted;

it should be noted that, when the SRS in this embodiment is replaced with a PUSCH, PUCCH, or PRACH channel, the method is also applicable, that is, equivalent to a scheme of performing power reduction without based on channel priority; in the above process

Is P_X(i) The linear threshold of (2).

As shown in fig. 6, a second uplink power control method for reducing the same ratio according to the embodiment of the present invention includes the following steps:

601, the user equipment determines a transmission power value of an uplink channel on each carrier according to the maximum transmission power value of each carrier and a power control parameter value corresponding to each carrier;

step 602, the user equipment determines whether the sum of the transmission power values of the uplink channels in all frequency bands is greater than the allowed maximum transmission power value of the user equipment;

the user equipment may not perform power reduction according to the channel priority, or may perform power reduction according to the channel priority.

Power reduction is not performed according to channel priority: step 603, the user equipment performs power reduction on the total transmitting power value of each frequency band in equal proportion, so that the sum of the total transmitting power values of each frequency band after power reduction is not greater than the allowed maximum transmitting power value of the user equipment; and for each frequency band, the user equipment reduces the transmission power value of each uplink channel in the frequency band in equal proportion based on the total transmission power value of the frequency band after the power is reduced, so that the sum of the transmission power values of each uplink channel in the frequency band after the power is reduced is not greater than the total transmission power value of the frequency band.

And power reduction is carried out according to the channel priority: step 603, the user equipment performs power reduction on the total transmitting power value of each frequency band in equal proportion, so that the sum of the total transmitting power values of each frequency band after power reduction is not greater than the allowed maximum transmitting power value of the user equipment; and for each frequency band, the user equipment performs equal proportion power reduction on the channels with the same channel priority in the frequency band based on the total transmission power value of the frequency band after power reduction, so that the sum of the transmission power values of all uplink channels in the frequency band after power reduction is not greater than the total transmission power value of the frequency band.

If the power is reduced according to the channel priority, the method specifically includes:

when the power reduction scaling factor corresponding to each band is the same: based on the maximum transmitting power allowed by the UE, firstly, carrying out equal proportion power reduction on the total transmitting power of an uplink channel on a carrier in each band so as to ensure that the sum of the total transmitting power after the power reduction of each band does not exceed the maximum transmitting power allowed by the UE; then, according to the total transmitting power of each band after the power reduction and the channel priority in each band, reducing the power of the channels with the same channel priority in the same band in equal proportion, so as to ensure that the sum of the transmitting power of the uplink channels on all carriers in the band after the power reduction does not exceed the total transmitting power of the band after the total transmitting power of the band is reduced;

preferably, the equal proportional power reduction in step 603 is equivalent to that the power reduction proportional coefficient corresponding to each band is the same, at this time, the power reduction proportional coefficient corresponding to each band may not be configured, and the UE and the base station agree that the proportional coefficient is the same for all bands;

when the power is reduced based on the channel priority, the transmitting power of the channel with lower channel priority is reduced preferentially;

the priority of the channel during power distribution in each band is PUCCH > PUSCH carrying UCI > PUSCH not carrying UCI, that is, the transmitting power of the PUCCH is preferentially ensured not to be reduced, in available transmitting power except PUCCH transmitting power of the total transmitting power of the current band after power reduction, the power of the PUSCH carrying UCI is preferentially ensured not to be reduced, and the power of the rest PUSCHs not carrying UCI is reduced until the sum of the total transmitting power of all channels of the UE does not exceed the allowed maximum transmitting power of the UE;

or if there is PRACH transmission, the channel priority when the power in each band is distributed is PUCCH > PRACH > PUSCH carrying UCI > PUSCH not carrying UCI, that is, the transmission power of PUCCH is preferentially ensured not to be reduced, the transmission power of PRACH is preferentially ensured not to be reduced in the available transmission power except the PUCCH transmission power of the total transmission power of the current band after the power reduction, the power of PUSCH carrying UCI is preferentially ensured not to be reduced in the available transmission power except the PUCCH and PRACH transmission power of the total transmission power of the current band after the power reduction, and the power of the rest PUSCHs not carrying UCI is reduced until the sum of the total transmission power of all channels of UE does not exceed the allowed maximum transmission power of UE; or PRACH > PUCCH > PUSCH carrying UCI > PUSCH not carrying UCI, that is, the transmitting power of PRACH is preferentially ensured not to be reduced, in available transmitting power except PRACH transmitting power of the total transmitting power of the current band after power reduction, the transmitting power of PUCCH is preferentially ensured not to be reduced, in available transmitting power except PRACH and PUCCH transmitting power of the total transmitting power of the current band after power reduction, the power of PUSCH carrying UCI is preferentially ensured not to be reduced, and the power of the rest PUSCHs not carrying UCI is reduced until the sum of the total transmitting power of all channels of the UE does not exceed the allowed maximum transmitting power of the UE.

For example, in fig. 8, uplink transmission is performed on carrier 1 and carrier 2 in a UE aggregation band1, and carrier 3, carrier 4, and carrier 5 in a band2, each band is configured with a special carrier as a carrier for transmitting a PUCCH (i.e., each band is configured with an extended carrier E-cell, similar to Pcell in Rel-10), and the specific behavior of the UE is as follows:

the UE first calculates PUCCH transmit power P in band1 and band2 according to formula (1) and according to b-1 and b-2, respectively_PUCCH，1(i) And P_PUCCH，2(i) Wherein b is a band number;

and then, calculating the PUSCH transmission power P of the band1 and the band2 without simultaneous transmission of the PUCCH on one carrier according to the formula (2)_PUSCH，2(i)、P_PUSCH，4(i) And P_PUSCH，5(i)；

Calculating the PUSCH transmission power P of the band2 with the PUCCH on one carrier wave according to the formula (3)_PUSCH，3(i)；

The UE further determines whether the sum of the transmit powers of the uplink channels on all carriers in all bands exceeds the maximum transmit power allowed by the UE:

when judging ${\hat{P}}_{\mathrm{PUCCH},1}\left(i\right)+{\hat{P}}_{\mathrm{PUSCH},2}\left(i\right)+{\hat{P}}_{\mathrm{PUCCH},2}\left(i\right)+{\hat{P}}_{\mathrm{PUSCH},3}\left(i\right)+{\hat{P}}_{\mathrm{PUSCH},4}\left(i\right)+{\hat{P}}_{\mathrm{PUSCH},5}\left(i\right)>{\hat{P}}_{\mathrm{CMAX}}\left(i\right)$ In time, power reduction is required, and assuming that power reduction is performed based on channel priority, the method specifically includes:

firstly, the current total transmitting power of each band is calculated according to the formula (13), namelyAndb is a band number, and the power of the total transmitting power of each band is reduced proportionally according to a formula (14) so as to ensure that the sum of the total transmitting power of a plurality of bands after power reduction does not exceed the maximum transmitting power allowed by the UE; in equation (14), w (i) is a power reduction coefficient, and the same value is used for the total transmission power of all bands;

<math> <mrow> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>T</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>=</mo> <munder> <mi>&Sigma;</mi> <mi>b</mi> </munder> <mrow> <mo>(</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUCCH</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>)</mo> </mrow> </mrow> </math> formula (13);

<math> <mrow> <munder> <mi>&Sigma;</mi> <mi>b</mi> </munder> <mi>w</mi> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&CenterDot;</mo> <msup> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>T</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mo>&prime;</mo> </msup> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&le;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>CMAX</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> </mrow> </math> formula (14);

then, based on the total transmission power and the channel priority after the power of each band is reduced, the UE preferentially ensures that the transmission power of the PUCCH is not reduced in each band, preferentially sends the remaining UE power to the PUSCH carrying the UCI in the band, and reduces the power of the same proportion to the channel with the same low priority in the band (for example, the PUSCH not carrying the UCI), that is:

if it is not

Where b is a band number, j is 2 for band1, and j is 3 for band2, that is, the transmission power of the PUSCH carrying UCI exceeds the remaining power after the total power of the band is reduced, then

For the transmission power of the PUSCH carrying the UCI after the power in each band is reduced, the UE sends each uplink channel according to the transmission power after the power is reduced, and determines not to send the PUSCHs not carrying the UCI in the band in the current subframe (that is, the transmission power of the PUSCHs is reduced to 0);

if it is not

B is a band number, j is 2 for band1, j is 3 for band2, that is, the transmission power of the PUSCH carrying the UCI in the band does not exceed the remaining power after the total power of the band is reduced, the PUSCH carrying the UCI is not required to be subjected to power reduction, and further, the PUSCH not carrying the UCI is subjected to power reduction in an equal proportion according to a formula (15), so that the total transmission power of the channel in the band after power reduction does not exceed the total transmission power after the total power of the band is reduced; in the formula (15), w_b(i) The power reduction coefficient of the channels with the same priority in band b is the same for all PUSCH values in the same band, and w (i) of a specific PUSCH may be 0 (i.e. power may be reduced to 0); the UE sends each uplink channel according to the transmitting power after the power is reduced;

<math> <mrow> <munder> <mi>&Sigma;</mi> <mrow> <mi>c</mi> <mo>&NotEqual;</mo> <mi>j</mi> </mrow> </munder> <msub> <mi>w</mi> <mi>b</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&CenterDot;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&le;</mo> <mrow> <mo>(</mo> <msup> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>T</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mo>&prime;</mo> </msup> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>-</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUCCH</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>-</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>j</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>)</mo> </mrow> </mrow> </math> formula (15);

wherein, <math> <mrow> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>j</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>=</mo> <mi>min</mi> <mrow> <mo>(</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>j</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>,</mo> <mrow> <mo>(</mo> <msup> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>T</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mo>&prime;</mo> </msup> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>-</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUCCH</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>)</mo> </mrow> <mo>)</mo> </mrow> <mo>.</mo> </mrow> </math>

when judging <math> <mrow> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUCCH</mi> <mo>,</mo> <mn>1</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>2</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUCCH</mi> <mo>,</mo> <mn>2</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>3</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>4</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>5</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&le;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>CMAX</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> </mrow> </math> The transmission may be directly in accordance with the calculated power on each of the plurality of bands.

It should be noted that, in the above embodiments, when there is no PUCCH transmission,

when there is no PUSCH transmission carrying UCI,

the above process is equally applicable; in the above process

Is P_X(i) The linear threshold of (2).

For another example, in fig. 9, the UE aggregates carrier 1, carrier 2, and carrier 3 in band1, and carries 4 and carrier 5 in band2 for uplink transmission, there is only one Pcell PUCCH transmission in multiple bands, and the specific behavior of the UE is as follows:

the UE firstly calculates PUCCH transmit power P in band1 according to formula (1) b ═ 1_PUCCH(i) Wherein b is a band number; calculating the PUSCH transmission power P on the corresponding carrier waves in the band1 and the band2 according to the formula (2)_PUSCH，2(i)、P_PUSCH，3(i)、P_PUSCH，4(i) And P_PUSCH，5(i)；

The UE further determines whether the sum of the transmit power values of the uplink channels on all carriers in all bands exceeds the maximum transmit power value allowed by the UE:

when judging ${\hat{P}}_{\mathrm{PUCCH}}\left(i\right)+{\hat{P}}_{\mathrm{PUSCH},2}\left(i\right)+{\hat{P}}_{\mathrm{PUSCH},3}\left(i\right)+{\hat{P}}_{\mathrm{PUSCH},4}\left(i\right)+{\hat{P}}_{\mathrm{PUSCH},5}\left(i\right)>{\hat{P}}_{\mathrm{MAX}}\left(i\right)$ In time, power reduction is required, and assuming that power reduction is performed based on channel priority, the method specifically includes:

firstly, the current total transmitting power of each band is calculated according to the formula (13)

And

b is a band number, and the power of the total transmitting power of each band is reduced proportionally according to a formula (14) so as to ensure that the sum of the total transmitting power of a plurality of bands after power reduction does not exceed the maximum transmitting power allowed by the UE; in equation (14), w (i) is a power reduction coefficient, and the same value is used for the total transmission power of all bands;

then, based on the total transmission power and the channel priority after the power of each band is reduced, the UE preferentially ensures that the transmission power of the PUCCH is not reduced in each band, preferentially sends the remaining UE power to the PUSCH carrying the UCI in the band, and reduces the power of the same proportion to the channel with the same low priority in the band (for example, the PUSCH not carrying the UCI), that is:

for band1, if

Where b is 1 and numbered band, j is 2, that is, the transmission power of PUSCH carrying UCI exceeds the remaining power after the total power of band is reduced, then

For the transmission power of the PUSCH bearing the UCI after the power in each band is reduced, the UE sends each uplink channel according to the transmission power after the power is reduced, and determines not to send the PUSCH not bearing the UCI in the band in the current subframePUSCH (i.e., transmission power of these PUSCHs is reduced to 0);

for band1, if

B is a band number, j is 2, that is, the transmission power of the PUSCH carrying the UCI in the band does not exceed the remaining power after the total power of the band is reduced, and power reduction of the PUSCH carrying the UCI is not required, and further power reduction of the PUSCH not carrying the UCI is performed in an equal proportion according to a formula (15), so that the total transmission power of the channel in the band after power reduction does not exceed the total transmission power after the total power of the band is reduced; in the formula (15), w_b(i) The power reduction coefficient of the channels with the same priority in band b is the same for all PUSCH values in the same band, and w (i) of a specific PUSCH may be 0 (i.e. power may be reduced to 0); the UE sends each uplink channel according to the transmitting power after the power is reduced;

for band2, if

If b is a band number, directly sending the PUSCH in the band according to the original calculation power; if it is not

Performing equal proportion power reduction on the PUSCH in the band according to a formula (16) based on the total transmission power after the total power of the band is reduced, so that the total transmission power of the channel in the band after the power reduction does not exceed the total transmission power after the total power of the band is reduced; in the formula (16), w_b(i) The power reduction coefficient of the channels with the same priority in band b is the same for all PUSCH values in the same band, and w (i) of a specific PUSCH may be 0 (i.e. power may be reduced to 0); the UE sends each uplink channel according to the transmitting power after the power is reduced;

<math> <mrow> <munder> <mi>&Sigma;</mi> <mi>c</mi> </munder> <msub> <mi>w</mi> <mi>b</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&CenterDot;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&le;</mo> <msup> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>T</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mo>&prime;</mo> </msup> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> </mrow> </math> equation (16).

When judging <math> <mrow> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>PUCCH</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>2</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>3</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>4</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>5</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&le;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>CMAX</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> </mrow> </math> When the power is not calculated, the power can be directly transmitted according to the calculated power on each carrier in the plurality of bands;

it should be noted that, in the above embodiments, when there is no PUCCH transmission,

when there is no PUSCH transmission carrying UCI,

the above process is equally applicable; in the above process

Is P_X(i) The linear threshold of (2).

In the above example of performing equal-proportion power reduction in fig. 8 and fig. 9, for the scheme of performing power reduction not based on channel priority, it is not necessary to distinguish priorities of different channels, and power is reduced for all channels at the same time, which is not described herein again.

For another example, in fig. 10, the UE aggregates carrier 1 and carrier 2 in band1 and carrier 3 and carrier 4 in band2 for uplink transmission, and the specific behavior of the UE is as follows:

the UE firstly calculates the SRS (reference signal for sounding) transmission power P on each carrier in the band1 and the band2 according to the formula (7)_SRS，1、P_SRS，2、P_SRS，3And P_SRS，4；

The UE further determines whether the sum of the SRS transmit powers on all carriers in all bands exceeds the maximum transmit power allowed by the UE:

is judged when ${\hat{P}}_{\mathrm{SRS},1}\left(i\right)+{\hat{P}}_{\mathrm{SRS},2}\left(i\right)+{\hat{P}}_{\mathrm{SRS},3}\left(i\right)+{\hat{P}}_{\mathrm{SRS},4}\left(i\right)>{\hat{P}}_{\mathrm{CMAX}}\left(i\right)$ In this case, power reduction is needed, and since there is only one signal in fig. 10, power reduction is not performed based on channel priority, which specifically includes:

firstly, the current total transmitting power of each band is calculated according to the formula (17)Andb is a band number, and the total transmitting power of each band is subjected to equal proportion power reduction according to a formula (14) so as to meet the requirements of a plurality of bands after power reductionThe sum of the total transmission power does not exceed the maximum transmission power allowed by the UE; in equation (14), w (i) is a power reduction coefficient, and the same value is used for the total transmission power of all bands;

<math> <mrow> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>T</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>=</mo> <munder> <mi>&Sigma;</mi> <mi>b</mi> </munder> <mrow> <mo>(</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>SRS</mi> <mo>,</mo> <mi>c</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>)</mo> </mrow> </mrow> </math> formula (17);

then, based on the total transmission power after the power reduction of each band, the UE determines whether the total SRS transmission power in each band exceeds the total transmission power after the total power reduction of the band, that is: if it is not

If b is a band number, directly sending the SRS in the band according to the original calculation power; if it is not

Performing equal proportion power reduction on the SRS in the band based on the total transmission power of the band after the total power reduction according to a formula (18) so as to ensure that the total transmission power of the channel in the band after the power reduction does not exceed the total transmission power of the band after the total power reduction; in the formula (18), w_b(i) The power reduction coefficient of the SRS in the band b is the same for all SRS values in the same band; the UE sends each SRS according to the transmitting power after the power is reduced;

<math> <mrow> <munder> <mi>&Sigma;</mi> <mi>c</mi> </munder> <msub> <mi>w</mi> <mi>b</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&CenterDot;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>SRS</mi> <mo>,</mo> <mi>c</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&le;</mo> <msup> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>T</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mo>&prime;</mo> </msup> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> </mrow> </math> equation (18).

When judging <math> <mrow> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>SRS</mi> <mo>,</mo> <mn>1</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>SRS</mi> <mo>,</mo> <mn>2</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>SRS</mi> <mo>,</mo> <mn>3</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>SRS</mi> <mo>,</mo> <mn>4</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&le;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>CMAX</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> </mrow> </math> When the power is not calculated, the power can be directly calculated according to the SRS on each carrier wave in the plurality of bands to be transmitted;

it should be noted that, when the SRS in this embodiment is replaced with a PUSCH, PUCCH, or PRACH channel, the method is also applicable, that is, equivalent to a scheme of performing power reduction without based on channel priority; in the above process

Is P_X(i) The linear threshold of (2).

As shown in fig. 7, a second uplink power control method for reducing different ratios according to the embodiment of the present invention includes the following steps:

step 701, the user equipment determines the transmission power value of the uplink channel on each carrier according to the maximum transmission power value of each carrier and the power control parameter value corresponding to each carrier;

step 702, the user equipment judges whether the sum of the transmission power values of all uplink channels in all frequency bands is greater than the allowed maximum transmission power value of the user equipment;

the user equipment may not perform power reduction according to the channel priority, or may perform power reduction according to the channel priority.

Power reduction is not performed according to channel priority: step 703, the user equipment performs power reduction on the total transmitting power value of each frequency band according to the power reduction proportion coefficient corresponding to the frequency band, so that the sum of the total transmitting power values of each frequency band after power reduction is not greater than the allowed maximum transmitting power value of the user equipment; for each frequency band, the user equipment judges whether the sum of the transmitting power values of the uplink channels in the frequency band is larger than the total transmitting power value of the frequency band based on the total transmitting power value of the frequency band after the power is reduced, if so, the user equipment performs equal proportion power reduction on the uplink channels in the frequency band, so that the sum of the transmitting power values of the uplink channels in the frequency band after the power is reduced is not larger than the total transmitting power value of the frequency band, and if not, the user equipment does not change the transmitting power value of the uplink channels in the frequency band.

And power reduction is carried out according to the channel priority: step 703, the user equipment performs power reduction on the total transmitting power value of each frequency band according to the power reduction proportion coefficient corresponding to the frequency band, so that the sum of the total transmitting power values of each frequency band after power reduction is not greater than the allowed maximum transmitting power value of the user equipment; for each frequency band, the user equipment judges whether the sum of the transmitting power values of the uplink channels in the frequency band is larger than the total transmitting power value of the frequency band based on the total transmitting power value of the frequency band after power reduction, if so, the uplink channels with the same channel priority in the frequency band are subjected to equal proportion power reduction, the sum of the transmitting power values of the uplink channels in the frequency band after power reduction is not larger than the total transmitting power value of the frequency band, and if not, the transmitting power value of the uplink channels in the frequency band is not changed.

If the power is reduced according to the channel priority, the method specifically includes:

when the power reduction proportionality coefficients corresponding to each band are different: based on the maximum transmitting power allowed by the UE, performing power reduction on the current total transmitting power of each band according to a power reduction proportion coefficient corresponding to the band so as to meet the requirement that the sum of the total transmitting power after the power reduction of each band does not exceed the maximum transmitting power allowed by the UE, and reducing the power of channels with the same channel priority in the same band in an equal proportion according to the total transmitting power after the power reduction of each band and the channel priority in each band so as to meet the requirement that the sum of the transmitting power of uplink channels on all carriers in the band after the power reduction does not exceed the total transmitting power of the band after the total transmitting power of the band is reduced;

preferably, in the method for performing power reduction based on the power reduction scaling factor corresponding to the frequency band in step 703, when the power reduction scaling factor corresponding to each band is the same, the power reduction scaling factor corresponding to each band may not be configured for equal-scale power reduction, and the UE and the base station agree that the scaling factor is the same for all bands; when the power reduction proportion coefficient corresponding to each band is different, the power reduction is non-equal proportion power reduction, and the power reduction coefficient is predetermined by the UE and the base station, or the base station configures the UE through high-level signaling or PDCCH signaling.

When the power is reduced based on the channel priority, the transmitting power of the channel with lower channel priority is reduced preferentially;

the priority of the channel during power distribution in each band is PUCCH > PUSCH carrying UCI > PUSCH not carrying UCI, that is, the transmitting power of the PUCCH is preferentially ensured not to be reduced, in available transmitting power except PUCCH transmitting power of the total transmitting power of the current band after power reduction, the power of the PUSCH carrying UCI is preferentially ensured not to be reduced, and the power of the rest PUSCHs not carrying UCI is reduced until the sum of the total transmitting power of all channels of the UE does not exceed the allowed maximum transmitting power of the UE;

or if there is PRACH transmission, the channel priority when the power in each band is distributed is PUCCH > PRACH > PUSCH carrying UCI > PUSCH not carrying UCI, that is, the transmission power of PUCCH is preferentially ensured not to be reduced, the transmission power of PRACH is preferentially ensured not to be reduced in the available transmission power except the PUCCH transmission power of the total transmission power of the current band after the power reduction, the power of PUSCH carrying UCI is preferentially ensured not to be reduced in the available transmission power except the PUCCH and PRACH transmission power of the total transmission power of the current band after the power reduction, and the power of the rest PUSCHs not carrying UCI is reduced until the sum of the total transmission power of all channels of UE does not exceed the allowed maximum transmission power of UE; or PRACH > PUCCH > PUSCH carrying UCI > PUSCH not carrying UCI, that is, the transmitting power of PRACH is preferentially ensured not to be reduced, in available transmitting power except PRACH transmitting power of the total transmitting power of the current band after power reduction, the transmitting power of PUCCH is preferentially ensured not to be reduced, in available transmitting power except PRACH and PUCCH transmitting power of the total transmitting power of the current band after power reduction, the power of PUSCH carrying UCI is preferentially ensured not to be reduced, and the power of the rest PUSCHs not carrying UCI is reduced until the sum of the total transmitting power of all channels of the UE does not exceed the allowed maximum transmitting power of the UE.

For example, in fig. 8, uplink transmission is performed on carrier 1 and carrier 2 in a UE aggregation band1, and carrier 3, carrier 4, and carrier 5 in a band2, each band is configured with a special carrier as a carrier for transmitting a PUCCH (i.e., each band is configured with an extended carrier E-cell, similar to Pcell in Rel-10), and the specific behavior of the UE is as follows:

the UE first calculates PUCCH transmit power P in band1 and band2 according to formula (1) and according to b-1 and b-2, respectively_PUCCH，1(i) And P_PUCCH，2(i) Wherein b is a band number;

and then, calculating the PUSCH transmission power P of the band1 and the band2 without simultaneous transmission of the PUCCH on one carrier according to the formula (2)_PUSCH，2(i)、P_PUSCH，4(i) And P_PUSCH，5(i)；

Calculating the PUSCH transmission power P of the band2 with the PUCCH on one carrier wave according to the formula (3)_PUSCH，3(i)；

The UE further determines whether the sum of the transmit powers of the uplink channels on all carriers in all bands exceeds the maximum transmit power allowed by the UE:

when judging ${\hat{P}}_{\mathrm{PUCCH},1}\left(i\right)+{\hat{P}}_{\mathrm{PUSCH},2}\left(i\right)+{\hat{P}}_{\mathrm{PUCCH},2}\left(i\right)+{\hat{P}}_{\mathrm{PUSCH},3}\left(i\right)+{\hat{P}}_{\mathrm{PUSCH},4}\left(i\right)+{\hat{P}}_{\mathrm{PUSCH},5}\left(i\right)>{\hat{P}}_{\mathrm{CMAX}}\left(i\right)$ In time, power reduction is required, and assuming that power reduction is performed based on channel priority, the method specifically includes:

firstly, the current total transmitting power of each band is calculated according to the formula (13), namely

And

wherein b is a band number and is paired according to formula (19)Performing power reduction based on a specific power reduction coefficient on the total transmission power of each band so as to ensure that the sum of the total transmission power of the bands after power reduction does not exceed the maximum transmission power allowed by the UE; in the formula (19), w_b(i) Configuring specific power reduction coefficients for different bands by high-level signaling or PDCCH signaling, or pre-appointing UE and a base station;

<math> <mrow> <munder> <mi>&Sigma;</mi> <mi>b</mi> </munder> <msub> <mi>w</mi> <mi>b</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&CenterDot;</mo> <msup> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>T</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mo>&prime;</mo> </msup> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&le;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>CMAX</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> </mrow> </math> formula (19);

then, based on the total transmission power and the channel priority after the power of each band is reduced, the UE preferentially ensures that the transmission power of the PUCCH is not reduced in each band, preferentially sends the remaining UE power to the PUSCH carrying the UCI in the band, and reduces the power of the same proportion to the channel with the same low priority in the band (for example, the PUSCH not carrying the UCI), that is:

if it is not

Where b is a band number, j is 2 for band1, and j is 3 for band2, that is, the transmission power of the PUSCH carrying UCI exceeds the remaining power after the total power of the band is reduced, then

For the transmission power of the PUSCH carrying the UCI after the power in each band is reduced, the UE sends each uplink channel according to the transmission power after the power is reduced, and determines not to send the PUSCHs not carrying the UCI in the band in the current subframe (that is, the transmission power of the PUSCHs is reduced to 0);

if it is not

B is a band number, j is 2 for band1, j is 3 for band2, that is, the transmission power of the PUSCH carrying the UCI in the band does not exceed the remaining power after the total power of the band is reduced, the PUSCH carrying the UCI is not required to be subjected to power reduction, and further, the PUSCH not carrying the UCI is subjected to power reduction in an equal proportion according to a formula (15), so that the total transmission power of the channel in the band after power reduction does not exceed the total transmission power after the total power of the band is reduced; in the formula (15), w_b(i) The power reduction coefficient of the channels with the same priority in band b is the same for all PUSCH values in the same band, and w (i) of a specific PUSCH may be 0 (i.e. power may be reduced to 0); the UE sends each uplink channel according to the transmitting power after the power is reduced;

when judging <math> <mrow> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUCCH</mi> <mo>,</mo> <mn>1</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>2</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUCCH</mi> <mo>,</mo> <mn>2</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>3</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>4</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>5</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&le;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>CMAX</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> </mrow> </math> The transmission may be directly in accordance with the calculated power on each of the plurality of bands.

It should be noted that, in the above embodiments, when there is no PUCCH transmission,

when there is no PUSCH transmission carrying UCI,

the above process is equally applicable; in the above process

Is P_X(i) The linear threshold of (2).

For another example, in fig. 9, the UE aggregates carrier 1, carrier 2, and carrier 3 in band1, and carries 4 and carrier 5 in band2 for uplink transmission, there is only one Pcell PUCCH transmission in multiple bands, and the specific behavior of the UE is as follows:

the UE firstly calculates PUCCH transmit power P in band1 according to formula (1) b ═ 1_PUCCH(i) Wherein b is a band number; calculating the PUSCH transmission power P on the corresponding carrier waves in the band1 and the band2 according to the formula (2)_PUSCH，2(i)、P_PUSCH，3(i)、P_PUSCH，4(i) And P_PUSCH，5(i)；

The UE further determines whether the sum of the transmit power values of the uplink channels on all carriers in all bands exceeds the maximum transmit power value allowed by the UE:

when judging ${\hat{P}}_{\mathrm{PUCCH}}\left(i\right)+{\hat{P}}_{\mathrm{PUSCH},2}\left(i\right)+{\hat{P}}_{\mathrm{PUSCH},3}\left(i\right)+{\hat{P}}_{\mathrm{PUSCH},4}\left(i\right)+{\hat{P}}_{\mathrm{PUSCH},5}\left(i\right)>{\hat{P}}_{\mathrm{CMAX}}\left(i\right)$ In time, power reduction is required, and assuming that power reduction is performed based on channel priority, the method specifically includes: firstly, the current total transmitting power of each band is calculated according to the formula (13)

Andb is a band number, and the power of the total transmitting power of each band is reduced proportionally according to a formula (19) so as to ensure that the sum of the total transmitting power of a plurality of bands after power reduction does not exceed the maximum transmitting power allowed by the UE; in the formula (19), w_b(i) Configuring specific power reduction coefficients for different bands by high-level signaling or PDCCH signaling, or pre-appointing UE and a base station;

then, based on the total transmission power and the channel priority after the power of each band is reduced, the UE preferentially ensures that the transmission power of the PUCCH is not reduced in each band, preferentially sends the remaining UE power to the PUSCH carrying the UCI in the band, and reduces the power of the same proportion to the channel with the same low priority in the band (for example, the PUSCH not carrying the UCI), that is:

for band1, ifWhere b is 1 and numbered band, j is 2, that is, the transmission power of PUSCH carrying UCI exceeds the remaining power after the total power of band is reduced, then

For the transmission power of the PUSCH carrying the UCI after the power in each band is reduced, the UE sends each uplink channel according to the transmission power after the power is reduced, and determines not to send the PUSCHs not carrying the UCI in the band in the current subframe (that is, the transmission power of the PUSCHs is reduced to 0);

for band1, if

B is a band number, j is 2, that is, the transmission power of the PUSCH carrying the UCI in the band does not exceed the remaining power after the total power of the band is reduced, and power reduction of the PUSCH carrying the UCI is not required, and further power reduction of the PUSCH not carrying the UCI is performed in an equal proportion according to a formula (15), so that the total transmission power of the channel in the band after power reduction does not exceed the total transmission power after the total power of the band is reduced; in the formula (15), w_b(i) The power reduction coefficient of the channels with the same priority in band b is the same for all PUSCH values in the same band, and w (i) of a specific PUSCH may be 0 (i.e. power may be reduced to 0); the UE sends each uplink channel according to the transmitting power after the power is reduced;

for band2, if

If b is a band number, directly sending the PUSCH in the band according to the original calculation power; if it is not

Performing equal proportion power reduction on the PUSCH in the band according to a formula (16) based on the total transmission power after the total power of the band is reduced, so that the total transmission power of the channel in the band after the power reduction does not exceed the total transmission power after the total power of the band is reduced; in the formula (16), w_b(i) The power reduction coefficient of the channels with the same priority in band b is the same for all PUSCH values in the same band, and w (i) of a specific PUSCH may be 0 (i.e. power may be reduced to 0); and the UE sends each uplink channel according to the transmission power after the power is reduced.

When judging <math> <mrow> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>PUCCH</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>2</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>3</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>4</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>5</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&le;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>CMAX</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> </mrow> </math> When the power is not calculated, the power can be directly transmitted according to the calculated power on each carrier in the plurality of bands;

it should be noted that, in the above embodiments, when there is no PUCCH transmission,

when there is no PUSCH transmission carrying UCI,the above process is equally applicable; in the above process

Is P_X(i) OfA sex threshold value.

For the above-mentioned examples of performing non-equal-proportion power reduction in fig. 8 and fig. 9, for the scheme of performing power reduction not based on channel priority, it is not necessary to distinguish priorities of different channels, and power is reduced for all channels at the same time, which is not described herein again.

For another example, in fig. 10, the UE aggregates carrier 1 and carrier 2 in band1 and carrier 3 and carrier 4 in band2 for uplink transmission, and the specific behavior of the UE is as follows:

the UE firstly calculates the SRS (reference signal for sounding) transmission power P on each carrier in the band1 and the band2 according to the formula (7)_SRS，1、P_SRS，2、P_SRS，3And P_SRS，4；

The UE further determines whether the sum of the SRS transmit powers on all carriers in all bands exceeds the maximum transmit power allowed by the UE:

is judged when ${\hat{P}}_{\mathrm{SRS},1}\left(i\right)+{\hat{P}}_{\mathrm{SRS},2}\left(i\right)+{\hat{P}}_{\mathrm{SRS},3}\left(i\right)+{\hat{P}}_{\mathrm{SRS},4}\left(i\right)>{\hat{P}}_{\mathrm{CMAX}}\left(i\right)$ In this case, power reduction is needed, and since there is only one signal in fig. 10, power reduction is not performed based on channel priority, which specifically includes:

firstly, the current total transmitting power of each band is calculated according to the formula (17)

And

b is a band number, and the power of the total transmitting power of each band is reduced proportionally according to a formula (19) so as to ensure that the sum of the total transmitting power of a plurality of bands after power reduction does not exceed the maximum transmitting power allowed by the UE; in the formula (19), w_b(i) The power reduction coefficients specific to different bands are configured by higher layer signaling or PDCCH signaling, or are pre-agreed for the UE and the base station.

Then, based on the total transmission power after the power reduction of each band, the UE determines whether the total SRS transmission power in each band exceeds the total transmission power after the total power reduction of the band, that is:

if it is not

If b is a band number, directly sending the SRS in the band according to the original calculation power; if it is not

Performing equal proportion power reduction on the SRS in the band based on the total transmission power of the band after the total power reduction according to a formula (18) so as to ensure that the total transmission power of the channel in the band after the power reduction does not exceed the total transmission power of the band after the total power reduction; in the formula (18), w_b(i) The power reduction coefficient of the SRS in the band b is the same for all SRS values in the same band; and the UE sends each SRS according to the transmission power after the power is reduced.

When judging <math> <mrow> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>SRS</mi> <mo>,</mo> <mn>1</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>SRS</mi> <mo>,</mo> <mn>2</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>SRS</mi> <mo>,</mo> <mn>3</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>SRS</mi> <mo>,</mo> <mn>4</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&le;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>CMAX</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> </mrow> </math> When the power is not calculated, the power can be directly calculated according to the SRS on each carrier wave in the plurality of bands to be transmitted;

it should be noted that, when the SRS in this embodiment is replaced with a PUSCH, PUCCH, or PRACH channel, the method is also applicable, that is, equivalent to a scheme of performing power reduction without based on channel priority; in the above processIs P_X(i) The linear threshold of (2).

The above power calculation formula on each carrier can be used as in the Rel-10 system.

The power control parameters corresponding to each carrier are configured independently, and the power control commands of the carriers in different bands can be sent independently or sent uniformly by one band (cross-band scheduling).

It should be noted that the Maximum transmit Power Allowed by the UE, the band Maximum transmit Power, and the carrier Maximum transmit Power in the above method and embodiment are powers with Power backoff taken into consideration, that is, powers of a Power backoff parameter MPR (Maximum Power Reduction, Maximum Power backoff), an Additional-Maximum Power backoff (Additional-Maximum Power backoff), a Power management Maximum Power backoff (Power management Maximum Power backoff), and Δ Tc (Allowed side band transmission Power grant) are taken into consideration, where the Power backoff parameter may be a set of parameters shared by all bands, or may also define a set of independent parameters for each band.

As shown in fig. 11, the method for transmitting configuration information according to the embodiment of the present invention includes the following steps:

step 1101, the network side determines a power reduction ratio coefficient value corresponding to each frequency band;

step 1102, the network side configures the determined power reduction ratio coefficient value corresponding to each frequency band to the user equipment through a high layer signaling or a PDCCH signaling.

Wherein the higher layer signaling includes but is not limited to at least one of the following signaling:

RRC signaling and MAC signaling.

In the implementation, the network side configures the UE with a maximum allowed transmit power of the UE in advance through higher layer signaling or PDCCH signaling, each carrier has a maximum transmit power of the carrier, and each band has a specific power reduction scaling factor, which is used for power reduction.

Based on the same inventive concept, the embodiment of the present invention further provides a user equipment for uplink power control, and as the principle of the user equipment for solving the problem is similar to the method for uplink power control in the embodiment of the present invention, the implementation of the user equipment may refer to the implementation of the method, and repeated parts are not described again.

As shown in fig. 12, the user equipment for uplink power control according to the embodiment of the present invention includes: a power determination module 1200, a determination module 1201, and a processing module 1202.

A power determining module 1200, configured to determine, according to the maximum transmission power value of each carrier and the power control parameter value corresponding to each carrier, a transmission power value of an uplink channel on each carrier;

a judging module 1201, configured to judge whether a sum of transmit power values of uplink channels in all frequency bands is greater than an allowed maximum transmit power value of the user equipment;

a processing module 1202, configured to, when it is determined that the sum of the transmission power values of the uplink channels in all the frequency bands is greater than the allowed maximum transmission power value of the user equipment, perform power reduction according to the allowed maximum transmission power value of the user equipment and the power reduction ratio coefficient value corresponding to each frequency band, so that the sum of the transmission power values of the uplink channels in all the frequency bands after power reduction is not greater than the allowed maximum transmission power value of the user equipment.

Preferably, when the sum of the transmission power values of the uplink channels in all the frequency bands is judged to be not greater than the maximum allowed transmission power value of the user equipment, the processing module 1202 sends the uplink channels according to the determined transmission power value of the uplink channel of each carrier in each frequency band.

Preferably, according to the maximum allowed transmission power value of the ue and the power reduction ratio coefficient value corresponding to each frequency band, the processing module 1202 sequentially performs power reduction on the uplink channels according to the order from low to high or from high to low of the channel priority, so that the sum of the transmission power values of the uplink channels in all frequency bands after power reduction is not greater than the maximum allowed transmission power value of the ue.

Preferably, the processing module 1202 performs equal proportion reduction on the transmission power values of the uplink channels in all frequency bands, so that the sum of the transmission power values of the uplink channels in all frequency bands after power reduction is not greater than the maximum allowed transmission power value of the user equipment.

Preferably, the processing module 1202 performs power reduction on the channels with the same channel priority in all frequency bands in an equal proportion, so that the sum of the transmission power values of the uplink channels in all frequency bands after power reduction is not greater than the maximum allowed transmission power value of the user equipment.

Preferably, the processing module 1202 performs power reduction on each uplink channel in different frequency bands according to the power reduction scaling factor corresponding to the frequency band in which the uplink channel is located, and performs equal-proportion power reduction on each uplink channel in the same frequency band, so that the sum of the transmission power values of each uplink channel in all frequency bands after power reduction is not greater than the maximum allowed transmission power value of the user equipment.

Preferably, the processing module 1202 performs power reduction on the uplink channels with the same priority in different frequency bands according to the power reduction scaling factor corresponding to the frequency band in which the uplink channel is located, and performs power reduction on the uplink channels with the same channel priority in the same frequency band in an equal proportion, so that the sum of the transmission power values of the uplink channels in all frequency bands after power reduction is not greater than the maximum allowed transmission power value of the user equipment.

Preferably, the processing module 1202 performs power reduction on the total transmission power value of each frequency band in an equal proportion, so that the sum of the total transmission power values of each frequency band after power reduction is not greater than the allowed maximum transmission power value of the user equipment; and for each frequency band, based on the total transmission power value of the frequency band after the power is reduced, reducing the transmission power value of each uplink channel in the frequency band in equal proportion, so that the sum of the transmission power values of each uplink channel in the frequency band after the power is reduced is not greater than the total transmission power value of the frequency band.

Preferably, the processing module 1202 performs power reduction on the total transmission power value of each frequency band in an equal proportion, so that the sum of the total transmission power values of each frequency band after power reduction is not greater than the allowed maximum transmission power value of the user equipment; and for each frequency band, performing equal proportion power reduction on channels with the same channel priority in the frequency band based on the total transmission power value of the frequency band after power reduction, so that the sum of the transmission power values of uplink channels in the frequency band after power reduction is not greater than the total transmission power value of the frequency band.

Preferably, the processing module 1202 performs power reduction on the total transmission power value of each frequency band according to the power reduction scaling factor corresponding to the frequency band, so that the sum of the total transmission power values of each frequency band after power reduction is not greater than the allowed maximum transmission power value of the user equipment; and for each frequency band, judging whether the sum of the transmitting power values of the uplink channels in the frequency band is larger than the total transmitting power value of the frequency band or not based on the total transmitting power value of the frequency band after the power is reduced, if so, carrying out equal proportion power reduction on the uplink channels in the frequency band, so that the sum of the transmitting power values of the uplink channels in the frequency band after the power is reduced is not larger than the total transmitting power value of the frequency band, and if not, not changing the transmitting power value of the uplink channels in the frequency band.

Preferably, the processing module 1202 performs power reduction on the total transmission power value of each frequency band according to the power reduction scaling factor corresponding to the frequency band, so that the sum of the total transmission power values of each frequency band after power reduction is not greater than the allowed maximum transmission power value of the user equipment; and for each frequency band, judging whether the sum of the transmitting power values of the uplink channels in the frequency band is larger than the total transmitting power value of the frequency band or not based on the total transmitting power value of the frequency band after the power is reduced, if so, carrying out equal proportion power reduction on the uplink channels with the same channel priority in the frequency band, enabling the sum of the transmitting power values of the uplink channels in the frequency band after the power is reduced to be not larger than the total transmitting power value of the frequency band, and if not, not changing the transmitting power value of the uplink channels in the frequency band.

Preferably, the priority of the uplink channel is:

when there is no PRACH transmission, the priority of PUCCH > the priority of PUSCH carrying UCI > the priority of PUSCH not carrying UCI;

when PRACH transmission exists, the priority of PUCCH > the priority of PRACH > the priority of PUSCH carrying UCI > the priority of PUSCH not carrying UCI, or the priority of PRACH > the priority of PUCCH > the priority of PUSCH carrying UCI > the priority of PUSCH not carrying UCI.

Preferably, the uplink control channel includes one or more of the following channels:

SRS, PUSCH, PUCCH and PRACH.

Preferably, the power reduction ratio coefficient value corresponding to each frequency band is predetermined by the user equipment and the network side, or the network side configures the user equipment through a high layer signaling or a PDCCH signaling;

wherein, the power reduction ratio coefficient value corresponding to each frequency band is not more than 1 and not less than 0.

Preferably, the higher layer signaling includes, but is not limited to, at least one of the following:

RRC signaling and MAC signaling.

Preferably, the power reduction ratio coefficients corresponding to different frequency bands are the same or different;

when the power reduction scaling factor values for different frequency bands are the same, the power reduction scaling factor is not configured or agreed.

Based on the same inventive concept, the embodiment of the present invention further provides a network side device for transmitting configuration information, and since the principle of the network side device for solving the problem is similar to the method for transmitting configuration information in the embodiment of the present invention, the implementation of the user equipment may refer to the implementation of the method, and repeated parts are not described again.

As shown in fig. 13, the network side device for transmitting configuration information according to the embodiment of the present invention includes: coefficient value determination module 1300 and configuration module 1301.

A coefficient value determining module 1300, configured to determine a power reduction ratio coefficient value corresponding to each frequency band;

a configuration module 1301, configured to configure the determined power reduction ratio coefficient value corresponding to each frequency band to the user equipment through a higher layer signaling or a PDCCH signaling.

Preferably, the higher layer signaling includes, but is not limited to, at least one of the following:

RRC signaling and MAC signaling.

The network side device in the embodiment of the present invention may be a base station (such as a macro base station, a home base station, etc.), an RN (relay) device, or another network side device

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (36)

1. A method for uplink power control, the method comprising:

the user equipment determines the transmitting power value of an uplink channel on each carrier;

the user equipment judges whether the sum of the transmitting power values of all uplink channels in all frequency bands is greater than the allowed maximum transmitting power value of the user equipment;

and when the user equipment judges that the sum of the transmission power values of the uplink channels in all the frequency bands is greater than the maximum allowed transmission power value of the user equipment, performing power reduction according to the maximum allowed transmission power value of the user equipment and the power reduction proportion coefficient value corresponding to each frequency band, so that the sum of the transmission power values of the uplink channels in all the frequency bands after power reduction is not greater than the maximum allowed transmission power value of the user equipment.

2. The method of claim 1, further comprising:

and when the user equipment judges that the sum of the transmission power values of the uplink channels in all the frequency bands is not greater than the maximum allowed transmission power value of the user equipment, the user equipment sends the uplink channels according to the determined transmission power value of the uplink channel of each carrier in each frequency band.

3. The method of claim 1, wherein the UE performs power reduction according to the UE's maximum allowed transmission power value and a power reduction ratio coefficient value corresponding to each frequency band, further comprising:

and the user equipment sequentially reduces the power of the uplink channels according to the sequence of the channel priority from low to high or from high to low according to the allowed maximum transmission power value of the user equipment and the power reduction proportion coefficient value corresponding to each frequency band, so that the sum of the transmission power values of the uplink channels in all the frequency bands after the power reduction is not more than the allowed maximum transmission power value of the user equipment.

4. The method of claim 1, wherein the ue performs power reduction according to the maximum allowed transmit power value of the ue and a power reduction ratio coefficient value corresponding to each frequency band, and specifically comprises:

and the user equipment reduces the transmitting power values of the uplink channels in all the frequency bands in equal proportion, so that the sum of the transmitting power values of the uplink channels in all the frequency bands after the power reduction is not more than the maximum transmitting power value allowed by the user equipment.

5. The method according to claim 3, wherein the ue sequentially performs power reduction on the uplink channels according to the allowed maximum transmission power value of the ue and the power reduction ratio coefficient value corresponding to each frequency band, in order from low to high channel priority or from high to low channel priority, specifically comprising:

and the user equipment performs equal proportion power reduction on the channels with the same channel priority in all frequency bands, so that the sum of the transmitting power values of all uplink channels in all frequency bands after power reduction is not more than the maximum allowable transmitting power value of the user equipment.

6. The method of claim 1, wherein the ue performs power reduction according to the maximum allowed transmit power value of the ue and a power reduction ratio coefficient value corresponding to each frequency band, and specifically comprises:

and the user equipment performs power reduction on each uplink channel in different frequency bands according to the power reduction proportion coefficient corresponding to the frequency band of the uplink channel, performs equal proportion power reduction on each uplink channel in the same frequency band, and ensures that the sum of the transmission power values of each uplink channel in all the frequency bands after power reduction is not greater than the maximum allowable transmission power value of the user equipment.

7. The method according to claim 3, wherein the ue sequentially performs power reduction on the uplink channels according to the allowed maximum transmission power value of the ue and the power reduction ratio coefficient value corresponding to each frequency band, in order from low to high channel priority or from high to low channel priority, specifically comprising:

and the user equipment performs power reduction on the uplink channels with the same priority in different frequency bands according to the power reduction proportion coefficient corresponding to the frequency band of the uplink channel, performs equal proportion power reduction on the uplink channels with the same channel priority in the same frequency band, and enables the sum of the transmitting power values of the uplink channels in all the frequency bands after power reduction to be not more than the maximum transmitting power value allowed by the user equipment.

8. The method of claim 1, wherein the ue performs power reduction according to the maximum allowed transmit power of the ue and a power reduction ratio coefficient value corresponding to each frequency band, and specifically comprises:

the user equipment performs equal proportion power reduction on the total transmitting power value of each frequency band, so that the sum of the total transmitting power values of each frequency band after power reduction is not greater than the maximum transmitting power value allowed by the user equipment;

and for each frequency band, the user equipment reduces the transmission power value of each uplink channel in the frequency band in equal proportion based on the total transmission power value of the frequency band after the power is reduced, so that the sum of the transmission power values of each uplink channel in the frequency band after the power is reduced is not greater than the total transmission power value of the frequency band.

9. The method according to claim 3, wherein the ue sequentially performs power reduction on the uplink channels according to the allowed maximum transmission power value of the ue and the power reduction ratio coefficient value corresponding to each frequency band, in order from low to high channel priority or from high to low channel priority, specifically comprising:

the user equipment performs equal proportion power reduction on the total transmitting power value of each frequency band, so that the sum of the total transmitting power values of each frequency band after power reduction is not greater than the maximum transmitting power value allowed by the user equipment;

and for each frequency band, the user equipment performs equal proportion power reduction on the channels with the same channel priority in the frequency band based on the total transmission power value of the frequency band after power reduction, so that the sum of the transmission power values of all uplink channels in the frequency band after power reduction is not greater than the total transmission power value of the frequency band.

10. The method of claim 1, wherein the ue performs power reduction according to the maximum allowed transmit power of the ue and a power reduction ratio coefficient value corresponding to each frequency band, and specifically comprises:

the user equipment reduces the power of the total transmitting power value of each frequency band according to the power reduction proportion coefficient corresponding to the frequency band, so that the sum of the total transmitting power values of each frequency band after the power reduction is not more than the allowable maximum transmitting power value of the user equipment;

for each frequency band, the user equipment judges whether the sum of the transmitting power values of the uplink channels in the frequency band is larger than the total transmitting power value of the frequency band based on the total transmitting power value of the frequency band after the power is reduced, if so, the user equipment performs equal proportion power reduction on the uplink channels in the frequency band, so that the sum of the transmitting power values of the uplink channels in the frequency band after the power is reduced is not larger than the total transmitting power value of the frequency band, and if not, the user equipment does not change the transmitting power value of the uplink channels in the frequency band.

11. The method according to claim 3, wherein the ue sequentially performs power reduction on the uplink channels according to the allowed maximum transmission power value of the ue and the power reduction ratio coefficient value corresponding to each frequency band, in order from low to high channel priority or from high to low channel priority, specifically comprising:

the user equipment reduces the power of the total transmitting power value of each frequency band according to the power reduction proportion coefficient corresponding to the frequency band, so that the sum of the total transmitting power values of each frequency band after the power reduction is not more than the allowable maximum transmitting power value of the user equipment;

for each frequency band, the user equipment judges whether the sum of the transmitting power values of the uplink channels in the frequency band is larger than the total transmitting power value of the frequency band based on the total transmitting power value of the frequency band after power reduction, if so, the uplink channels with the same channel priority in the frequency band are subjected to equal proportion power reduction, the sum of the transmitting power values of the uplink channels in the frequency band after power reduction is not larger than the total transmitting power value of the frequency band, and if not, the transmitting power value of the uplink channels in the frequency band is not changed.

12. The method of claim 3, 5, 7, 9 or 11, wherein the priority of the uplink channel is:

when no Physical Random Access Channel (PRACH) is transmitted, the priority of a Physical Uplink Control Channel (PUCCH) is more than the priority of a Physical Uplink Shared Channel (PUSCH) carrying Uplink Control Information (UCI) is more than the priority of a PUSCH not carrying UCI;

when PRACH transmission exists, the priority of PUCCH > the priority of PRACH > the priority of PUSCH carrying UCI > the priority of PUSCH not carrying UCI, or the priority of PRACH > the priority of PUCCH > the priority of PUSCH carrying UCI > the priority of PUSCH not carrying UCI.

13. The method of any of claims 1 to 11, wherein the uplink control channel comprises one or more of the following channels:

sounding reference signals SRS, PUSCH, PUCCH, and PRACH.

14. The method according to any one of claims 1 to 11, wherein the power reduction ratio coefficient value corresponding to each frequency band is predetermined by the ue and a network side, or configured to the ue by the network side through a high layer signaling or a physical downlink control channel PDCCH signaling;

wherein the power reduction ratio coefficient value corresponding to each frequency band is not more than 1 and not less than 0.

15. The method of claim 14, wherein the higher layer signaling comprises at least one of:

radio resource control, RRC, signaling and medium access control, MAC, signaling.

16. The method of claim 14, wherein the power reduction ratio coefficient values for different frequency bands are the same or different;

when the power reduction scaling factor values for different frequency bands are the same, the power reduction scaling factor is not configured or agreed.

17. A method for transmitting configuration information, the method comprising:

the network side determines a power reduction ratio coefficient value corresponding to each frequency band;

and the network side configures the determined power reduction ratio coefficient value corresponding to each frequency band to the user equipment through high-layer signaling or PDCCH signaling.

18. The method of claim 17, wherein the higher layer signaling comprises at least one of:

RRC signaling and MAC signaling.

19. A user equipment with uplink power control, the user equipment comprising:

a power determining module, configured to determine a transmission power value of an uplink channel on each carrier;

a judging module, configured to judge whether a sum of transmission power values of uplink channels in all frequency bands is greater than an allowed maximum transmission power value of the ue;

and the processing module is used for performing power reduction according to the allowed maximum transmitting power value of the user equipment and the power reduction proportion coefficient value corresponding to each frequency band when the sum of the transmitting power values of the uplink channels in all the frequency bands is judged to be larger than the allowed maximum transmitting power value of the user equipment, so that the sum of the transmitting power values of the uplink channels in all the frequency bands after power reduction is not larger than the allowed maximum transmitting power value of the user equipment.

20. The user device of claim 19, wherein the processing module is further to:

and when the sum of the transmission power values of the uplink channels in all the frequency bands is judged to be not more than the maximum allowed transmission power value of the user equipment, transmitting the uplink channels according to the determined transmission power value of the uplink channel of each carrier in each frequency band.

21. The user equipment of claim 19, wherein the processing module is specifically configured to:

and sequentially reducing the power of the uplink channels according to the sequence of the channel priority from low to high or from high to low according to the allowed maximum transmitting power value of the user equipment and the power reduction proportion coefficient value corresponding to each frequency band, so that the sum of the transmitting power values of the uplink channels in all the frequency bands after the power reduction is not more than the allowed maximum transmitting power value of the user equipment.

22. The user equipment of claim 19, wherein the processing module is specifically configured to:

and reducing the transmitting power values of the uplink channels in all the frequency bands in equal proportion, so that the sum of the transmitting power values of the uplink channels in all the frequency bands after power reduction is not more than the maximum allowable transmitting power value of the user equipment.

23. The user equipment of claim 21, wherein the processing module is specifically configured to:

and carrying out equal proportion power reduction on the channels with the same channel priority in all frequency bands, so that the sum of the transmitting power values of all uplink channels in all frequency bands after power reduction is not more than the maximum allowable transmitting power value of the user equipment.

24. The user equipment of claim 19, wherein the processing module is specifically configured to:

and performing power reduction on each uplink channel in different frequency bands according to the power reduction proportion coefficient corresponding to the frequency band of the uplink channel, and performing equal proportion power reduction on each uplink channel in the same frequency band, so that the sum of the transmission power values of each uplink channel in all frequency bands after power reduction is not greater than the maximum allowable transmission power value of the user equipment.

25. The user equipment of claim 21, wherein the processing module is specifically configured to:

and performing power reduction on the uplink channels with the same priority in different frequency bands according to the power reduction proportion coefficient corresponding to the frequency band in which the uplink channel is positioned, and performing equal proportion power reduction on the uplink channels with the same channel priority in the same frequency band, so that the sum of the transmission power values of the uplink channels in all the frequency bands after power reduction is not more than the maximum allowable transmission power value of the user equipment.

26. The user equipment of claim 19, wherein the processing module is specifically configured to:

carrying out equal-proportion power reduction on the total transmitting power value of each frequency band, and enabling the sum of the total transmitting power values of each frequency band after power reduction not to be larger than the maximum transmitting power value allowed by the user equipment;

and for each frequency band, based on the total transmission power value of the frequency band after the power is reduced, reducing the transmission power value of each uplink channel in the frequency band in equal proportion, so that the sum of the transmission power values of each uplink channel in the frequency band after the power is reduced is not greater than the total transmission power value of the frequency band.

27. The user equipment of claim 21, wherein the processing module is specifically configured to:

carrying out equal-proportion power reduction on the total transmitting power value of each frequency band, and enabling the sum of the total transmitting power values of each frequency band after power reduction not to be larger than the maximum transmitting power value allowed by the user equipment;

and for each frequency band, performing equal proportion power reduction on channels with the same channel priority in the frequency band based on the total transmission power value of the frequency band after power reduction, so that the sum of the transmission power values of uplink channels in the frequency band after power reduction is not greater than the total transmission power value of the frequency band.

28. The user equipment of claim 19, wherein the processing module is specifically configured to:

performing power reduction on the total transmitting power value of each frequency band according to the power reduction proportion coefficient corresponding to the frequency band, so that the sum of the total transmitting power values of each frequency band after power reduction is not greater than the allowed maximum transmitting power value of the user equipment;

and for each frequency band, judging whether the sum of the transmitting power values of the uplink channels in the frequency band is larger than the total transmitting power value of the frequency band or not based on the total transmitting power value of the frequency band after the power is reduced, if so, carrying out equal proportion power reduction on the uplink channels in the frequency band, so that the sum of the transmitting power values of the uplink channels in the frequency band after the power is reduced is not larger than the total transmitting power value of the frequency band, and if not, not changing the transmitting power value of the uplink channels in the frequency band.

29. The user equipment of claim 21, wherein the processing module is specifically configured to:

performing power reduction on the total transmitting power value of each frequency band according to the power reduction proportion coefficient corresponding to the frequency band, so that the sum of the total transmitting power values of each frequency band after power reduction is not greater than the allowed maximum transmitting power value of the user equipment;

and for each frequency band, judging whether the sum of the transmitting power values of the uplink channels in the frequency band is larger than the total transmitting power value of the frequency band or not based on the total transmitting power value of the frequency band after the power is reduced, if so, carrying out equal proportion power reduction on the uplink channels with the same channel priority in the frequency band, enabling the sum of the transmitting power values of the uplink channels in the frequency band after the power is reduced to be not larger than the total transmitting power value of the frequency band, and if not, not changing the transmitting power value of the uplink channels in the frequency band.

30. The user equipment as claimed in claim 21, 23, 25, 27 or 29, wherein the priority of the uplink channel is:

when there is no PRACH transmission, the priority of PUCCH > the priority of PUSCH carrying UCI > the priority of PUSCH not carrying UCI;

when PRACH transmission exists, the priority of PUCCH > the priority of PRACH > the priority of PUSCH carrying UCI > the priority of PUSCH not carrying UCI, or the priority of PRACH > the priority of PUCCH > the priority of PUSCH carrying UCI > the priority of PUSCH not carrying UCI.

31. The UE of any one of claims 19 to 29, wherein the uplink control channel comprises one or more of:

SRS, PUSCH, PUCCH and PRACH.

32. The UE according to any one of claims 19 to 29, wherein the power reduction ratio coefficient value corresponding to each frequency band is pre-agreed between the UE and a network side, or configured to the UE by the network side through a high layer signaling or a PDCCH signaling;

wherein the power reduction ratio coefficient value corresponding to each frequency band is not more than 1 and not less than 0.

33. The user equipment of claim 32, wherein the higher layer signaling comprises at least one of:

RRC signaling and MAC signaling.

34. The user equipment of claim 32 wherein the power reduction ratio coefficient values for different frequency bands are the same or different;

when the power reduction scaling factor values for different frequency bands are the same, the power reduction scaling factor is not configured or agreed.

35. A network side device for transmitting configuration information, the network side device comprising:

a coefficient value determination module for determining a power reduction ratio coefficient value corresponding to each frequency band;

and the configuration module is used for configuring the determined power reduction ratio coefficient value corresponding to each frequency band to the user equipment through high-layer signaling or PDCCH signaling.

36. The network-side device of claim 35, wherein the higher layer signaling comprises at least one of:

RRC signaling and MAC signaling.

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