CN102572967B

CN102572967B - Method, system and equipment for transmitting and receiving uplink information

Info

Publication number: CN102572967B
Application number: CN201210011116.6A
Authority: CN
Inventors: 高雪娟; 林亚男; 沈祖康
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2012-01-13
Filing date: 2012-01-13
Publication date: 2014-07-30
Anticipated expiration: 2032-01-13
Also published as: WO2013104272A1; CN102572967A

Abstract

The embodiment of the invention relates to the technical field of wireless communication, in particular to a method, a system and equipment for transmitting and receiving uplink information, which are used for solving the problem that uplink channels/signals in neighboring subframes collide in partial single carrier-frequency division multiple access (SC-FDMA) symbols due to unaligned uplink transmission time for carriers in different time advance (TA) groups. The method comprises the following steps of: determining that the uplink carrier reserves K SC-FDMA symbols in the current uplink subframe so as not to transmit the uplink information by user equipment with a plurality of uplink TA groups, and mapping the uplink information to be transmitted on other SC-FDMA symbols except the K SC-FDMA symbols reserved in the current uplink subframe so as to transmit the uplink information. By the method, system and equipment for transmitting and receiving the uplink information, the problem that the uplink channels/signals in the neighboring subframes collide in the SC-FDMA symbols due to unaligned uplink transmission time for carriers in different TA groups can be solved.

Description

Method, system and equipment for transmitting and receiving uplink information

Technical Field

The present invention relates to the field of wireless communications technologies, and in particular, to a method, a system, and a device for transmitting and receiving uplink information.

Background

LTE-a (Long Term Evolution-Advanced, Long Term Evolution enhanced) Rel-10(Release-10, Release 10) uplink only supports Intra-band (Intra-band) CA (Carrier Aggregation), and it is considered that the radio signal propagation characteristics of each Carrier are approximate, so each Carrier adjusts the uplink transmission Time based on the uplink TA (Time Advance) obtained by the RA (Random Access) process on PCC (primary component Carrier), that is, the uplink transmission times of multiple carriers are aligned, and therefore the uplink transmission times on different carriers are aligned, and there is no collision between the uplink channel/signal in the current uplink subframe on different carriers and the uplink channel/signal in the previous and/or next adjacent uplink subframe.

In LTE-ARel-11, CA of different uplink frequency bands (inter-band) and CA deployment scheme of mixing Macro base station (Macro eNB) and RRH (Remote Radio Head) can be supported. Due to different propagation characteristics of wireless signals in different frequency bands and different propagation paths traveled by the macro base station and the RRH, differences occur in the arrival time of signals sent by different carriers at the base station, that is, transmission delays are different. Therefore, in Rel-11, different carriers may use different TAs (i.e., Multi-TAs) to perform uplink transmission time adjustment, and uplink TAs of multiple carriers are not necessarily the same. Therefore, a TA group (group) concept is introduced, carriers with the same or similar transmission delays are divided into a group, which is called a TA group, carriers belonging to the same TA group use the same uplink TA, a TA value corresponding to one of the TA group carriers is obtained through a Random Access RA procedure on the one of the TA group carriers, when the group of carriers includes a PCC, a PRACH is sent on the PCC to obtain a TA corresponding to the group of carriers, and when the group of carriers are all SCCs (Secondary Component carriers), a PRACH (Physical Random Access CHannel) transmission on the SCC is required to obtain a TA corresponding to the group of carriers.

In addition, in 3GPP TS 36.300, for an inter-band discontinuous carrier aggregation scenario, on the premise that a one-way repeater (repeater) is not used, a difference in downlink transmission delay between different downlink carriers does not exceed 30 microseconds (us), and considering that a downlink carrier transmission time error on a base station side is at most 1.3us, a downlink reception time difference of each downlink carrier of a UE (user equipment) does not exceed 31.3 us. Considering that the uplink TA of each carrier is about 2 times of the downlink transmission delay of the carrier, the uplink TA difference of different carriers does not exceed 61.3 us. Considering that a Single Carrier-Frequency Division multiple access (SC-FDMA) symbol length excluding a Cyclic Prefix (CP) is about 66.67us, the difference of uplink TAs of different carriers does not exceed 1 SC-FDMA symbol.

The carriers belonging to the same TA group have the same uplink TA, and the uplink sending time of a plurality of carriers is aligned, so uplink channels/signals on different carriers in the current uplink subframe cannot collide with the uplink channels/signals in the previous and/or next adjacent uplink subframe. The carriers belonging to different TA groups have different uplink TA, the uplink transmission time of a plurality of carriers is not aligned, therefore, uplink channels/signals on different carriers in the current uplink subframe collide with uplink channels/signals in the previous and/or next adjacent uplink subframes in partial SC-FDMA symbols, considering that the difference of uplink TAs of different carriers does not exceed 1 SC-FDMA symbol, that is, the uplink channel/signal on a different carrier in the current uplink subframe may collide with the uplink channel/signal in the previous adjacent uplink subframe at the first SC-FDMA symbol, and/or uplink channels/signals on different carriers in the current uplink subframe may collide with uplink channels/signals in the next adjacent uplink subframe at the last SC-FDMA symbol, as shown in fig. 1A.

In addition, due to different TAs, a PUCCH (Physical Uplink control CHannel) and a PUSCH (Physical Uplink Shared CHannel) in a current Uplink subframe may not collide with a SRS (Sounding Reference Signal) at the last SC-FDMA, and at this time, a short PUCCH format and a PUSCH for performing rate matching based on the last SC-FDMA symbol transmission may not avoid collision of the SRS with the PUCCH and the PUSCH in the same Uplink subframe. Considering that the uplink TA of different carriers does not differ by more than 1 SC-FDMA symbol, the PUCCH and PUSCH in the current uplink subframe may also collide with SRS transmission in the current uplink subframe at the same time in the last two SC-FDMA symbols, or the PUCCH and PUSCH in the current uplink subframe may also collide with SRS transmission in the previous adjacent uplink subframe at the first SC-FDMA symbol, as shown in fig. 1B. Since too many dropped SRSs will affect uplink scheduling, under multi-TA, simultaneous transmission of SRS and PUCCH/PUSCH belonging to different TA groups should be supported.

The Rel-11 needs to support PRACH transmission on the SCC, and it is determined that it is not supported to simultaneously transmit PRACH on multiple carriers in one uplink subframe at present, and the PCC is out of synchronization uplink, then the UE is out of synchronization uplink (uplink data transmission may exist only after uplink synchronization is established for the PCC through an RA procedure), that is, there is no simultaneous transmission of the PRACH on the PCC and the PUSCH/SRS on the SCC, and the collision situation of uplink channels/signals in the same uplink subframe is shown in table 1. Specifically, when the PRACH and other uplink channels/signals are simultaneously transmitted in one uplink subframe, since the PRACH transmission assumes no uplink TA, the last multiple SC-FDMA symbols of the PRACH may collide with other uplink channels/signals in the next adjacent uplink subframe, and since the multiple TAs are different, the collision situation of different SC-FDMA symbols in the PRACH and uplink channels/signals in the next uplink subframe is different, as shown in fig. 1C, the last 5 th SC-FDMA symbol of the PRACH collides with the first SC-FDMA symbol of the PUCCH on carrier 1 in subframe i +1, and the last 4 SC-FDMA symbols of the PRACH collides with the PUCCH on carrier 1 in subframe i +1 and part of SC-FDMA symbols of the PUSCH on carrier 2 at the same time.

Table 1 possible collision situation of different uplink channels/signals in the same uplink subframe

Under Rel-11multi-TA, when uplink channels/signals such as PRACH, PUCCH, PUSCH, SRS and the like are supported to be simultaneously transmitted in the same uplink subframe, a power control method taking a subframe as a unit in Rel-10 is not applicable any more, so that in Rel-11, uplink transmission time of carriers belonging to different TA groups is not aligned, and the uplink channels/signals on different carriers in the current uplink subframe collide with the uplink channels/signals in the previous and/or next adjacent uplink subframe in part of SC-FDMA symbols.

To sum up, in Rel-11, uplink transmission time misalignment of carriers belonging to different TA groups may cause uplink channels/signals to collide at a part of SC-FDMA symbols.

Disclosure of Invention

The method, the system and the equipment for transmitting and receiving the uplink information are used for solving the problem that in Rel-11 in the prior art, uplink channels/signals in adjacent subframes collide in part of SC-FDMA symbols due to the fact that uplink sending time of carriers belonging to different TA groups is not aligned.

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

the method comprises the steps that user equipment with a plurality of uplink Timing Advance (TA) determines that K single carrier frequency division multiple access (SC-FDMA) symbols are reserved in a current uplink subframe by an uplink carrier and uplink information is not transmitted, wherein K is a non-negative integer;

and the user equipment maps the uplink information to be transmitted to the uplink carrier for transmission on other SC-FDMA symbols used for transmitting the uplink information except the K SC-FDMA symbols in the current uplink subframe.

The method for receiving uplink information provided by the embodiment of the invention comprises the following steps:

the method comprises the steps that a network side device determines that K SC-FDMA symbols are reserved in an uplink sub-frame at present for uplink carrier waves to not transmit uplink information, wherein K is a non-negative integer;

and the network side equipment receives the uplink information transmitted and sent by the user equipment with a plurality of uplink TAs through other SC-FDMA symbols except the SC-FDMA symbol which does not transmit the uplink information in the current uplink subframe by the uplink carrier.

The user equipment for transmitting uplink information provided by the embodiment of the invention comprises:

a first determining module, configured to determine that an uplink carrier reserves K SC-FDMA symbols in a current uplink subframe to transmit no uplink information when there are multiple uplink TAs, where K is a non-negative integer;

and the transmission module is used for mapping the uplink information to be transmitted to the uplink carrier wave to transmit on other SC-FDMA symbols used for transmitting the uplink information except the K SC-FDMA symbols of the current uplink subframe.

The network side device for receiving uplink information provided by the embodiment of the invention comprises:

a second determining module, configured to determine that K SC-FDMA symbols are reserved in the current uplink subframe for the uplink carrier and no uplink information is transmitted, where K is a non-negative integer;

and the receiving module is used for receiving the uplink information transmitted and sent by the user equipment with a plurality of uplink TAs through other SC-FDMA symbols except the SC-FDMA symbol which does not transmit the uplink information in the current uplink subframe by the uplink carrier.

The system for transmitting uplink information provided by the embodiment of the invention comprises:

the user equipment is used for determining that K SC-FDMA symbols are reserved in a current uplink subframe by an uplink carrier to transmit no uplink information when a plurality of uplink TAs exist, and mapping the uplink information to be transmitted to the SC-FDMA symbols which are used for transmitting the uplink information and are except the K SC-FDMA symbols in the current uplink subframe by the uplink carrier to transmit, wherein K is a non-negative integer;

and the network side equipment is used for determining that K SC-FDMA symbols are reserved in the current uplink subframe by the uplink carrier wave to not transmit uplink information, and receiving the uplink information transmitted by the user equipment with a plurality of uplink TAs through other SC-FDMA symbols except the SC-FDMA symbols which do not transmit the uplink information in the current uplink subframe by the uplink carrier wave.

The method has the advantages that K SC-FDMA symbols are reserved in the current uplink subframe for uplink carriers to not transmit uplink information, so that collision of uplink channels/signals in adjacent subframes in part of SC-FDMA symbols caused by misalignment of uplink sending time of carriers belonging to different TA groups in Rel-11 is avoided.

Drawings

FIG. 1A is a schematic diagram of a first Multi-TA simultaneous transmission in the background art;

FIG. 1B is a schematic diagram of a simultaneous transmission under a second Multi-TA in the background art;

FIG. 1C is a schematic diagram of a simultaneous transmission under a second Multi-TA in the background art;

fig. 2 is a schematic structural diagram of a system for transmitting uplink information according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a ue according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a network-side device according to an embodiment of the present invention;

fig. 5 is a flowchart illustrating a method for transmitting uplink information according to an embodiment of the present invention;

fig. 6 is a flowchart illustrating a method for receiving uplink information according to an embodiment of the present invention;

fig. 7 is a diagram illustrating a first transmission according to an embodiment of the present invention;

FIG. 8 is a diagram illustrating a second transmission scheme according to an embodiment of the present invention;

FIG. 9 is a third exemplary transmission diagram according to the present invention;

FIG. 10 is a diagram illustrating a fourth exemplary transmission according to the present invention;

fig. 11 is a diagram illustrating a fifth transmission according to an embodiment of the present invention;

fig. 12 is a diagram illustrating a sixth transmission according to an embodiment of the present invention;

fig. 13A is a diagram illustrating a seventh transmission according to the embodiment of the invention;

fig. 13B is a diagram illustrating an eighth transmission according to the embodiment of the present invention;

fig. 13C is a diagram illustrating a ninth transmission according to the embodiment of the invention.

Detailed Description

The user equipment with a plurality of uplink TAs determines that K SC-FDMA symbols are reserved in a current uplink subframe by an uplink carrier for not transmitting uplink information, and maps the uplink information to be transmitted to other SC-FDMA symbols used for transmitting the uplink information except the K SC-FDMA symbols in the current uplink subframe by the uplink carrier for transmitting. The method determines that K SC-FDMA symbols are reserved in the current uplink subframe for uplink carrier waves not to transmit uplink information, so that the collision of uplink channels/signals in adjacent subframes in part of SC-FDMA symbols caused by the fact that uplink sending time of carrier waves belonging to different TA groups is not aligned in Rel-11 is avoided.

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

In the following description, the implementation of the network side and the user equipment side is described first, and finally the implementation of the network side and the user equipment side is described separately, but this does not mean that the two sides must be implemented cooperatively, and actually, when the network side and the user equipment side are implemented separately, the problems existing on the network side and the user equipment side are also solved, and only when the two sides are used in combination, a better technical effect is obtained.

As shown in fig. 2, the system for transmitting uplink information according to the embodiment of the present invention includes: user equipment 10 and network side equipment 20.

The user equipment 10 with multiple uplink TAs is configured to determine that an uplink carrier reserves K SC-FDMA symbols in a current uplink subframe to transmit no uplink information, and map uplink information to be transmitted to other SC-FDMA symbols used for transmitting uplink information in the current uplink subframe except the K SC-FDMA symbols for transmission of the uplink information on the uplink carrier for transmission, where K is a non-negative integer.

It should be noted that the SC-FDMA symbols for transmitting uplink information, except for the K SC-FDMA symbols, are: the SC-FDMA symbols included in the uplink channel in one uplink subframe are the SC-FDMA symbols except reserved K SC-FDMA symbols, SC-FDMA symbols used for transmitting pilot frequency RS (reference signal) and SC-FDMA symbols reserved for SRS transmission when SRS transmission exists or the current subframe is a system SRS subframe.

And the network side device 20 is configured to determine that K SC-FDMA symbols are reserved in the current uplink subframe by the uplink carrier to not transmit uplink information, and receive, through other SC-FDMA symbols in the current uplink subframe except the SC-FDMA symbol that does not transmit uplink information, uplink information transmitted by the user equipment 10 having multiple uplink TAs.

Preferably, the uplink information in the embodiment of the present invention includes, but is not limited to, at least one of the following information:

ACK (acknowledgement)/NACK (Non-acknowledgement), CSI (Channel State Information), SR (scheduling request), SRs, UpLink data (UpLink data), and preamble sequence, wherein CSI in turn includes CQI (Channel Quality Indicator), PMI (Pre-coding matrix Indicator), RI (Rank Indicator), PTI (precoding type Indicator), and other Information. The uplink information transmitted on the PUCCH refers to: one or more combinations of ACK/NACK, periodic CSI and SR; the uplink information transmitted on the PUSCH refers to: uplink data or the combination of the uplink data and one or more of ACK/NACK and periodic/aperiodic CSI; the SRS is an uplink signal and only occupies one SC-FDMA symbol transmission in one uplink subframe.

In implementation, there are various ways for the user equipment 10 and the network side equipment 20 to determine the K SC-FDMA symbols, and the following are listed as several ways:

the method I comprises the following steps:

the network side device 20 directly configures K SC-FDMA symbols for the user equipment through a high layer signaling or a PDCCH (Physical Downlink control channel) signaling;

the user equipment side:

user equipment 10 directly determines K SC-FDMA symbols according to the configuration of the higher layer signaling or PDCCH signaling.

Preferably, the higher layer signaling is RRC (Radio Resource Control) signaling or MAC (Medium Access Control) signaling.

In the second mode, the user equipment 10 and the network side equipment 20 agree on K SC-FDMA symbols in advance;

then, the user equipment 10 and the network side equipment 20 respectively determine K SC-FDMA symbols according to a predetermined agreement with the other party.

Mode three, network side:

the network side device 20 notifies the user equipment of the K SC-FDMA symbols in advance through a high-level signaling or a PDCCH signaling, and further configures whether the user equipment 10 reserves the K SC-FDMA symbols in the current uplink subframe or not through a specific bit field in the PDCCH signaling. The PDCCH may be a PDCCH (including but not limited to a PDCCH for carrying a DL grant and/or a PDCCH for indicating resource release of a downlink SPS (Semi-persistent scheduling)) in a downlink subframe corresponding to ACK/NACK feedback in a current uplink subframe, and/or a PDCCH corresponding to a PUSCH in a current uplink subframe.

The user equipment side:

the user equipment 10 judges whether there is reserved SC-FDMA symbol in the current uplink subframe according to the specific bit field in the PDCCH signaling, further determines K SC-FDMA symbols pre-configured for the high layer signaling or the PDCCH signaling as the reserved K SC-FDMA symbols when it is judged that there is the reserved SC-FDMA symbol, and determines the SC-FDMA symbol without reservation in the current uplink subframe when it is judged that there is no reserved SC-FDMA symbol, wherein the PDCCH is defined as the network side.

For example, in the PDCCH signaling, the original 1 bit is reused or 1 bit is newly added as the indication information of whether the reserved SC-FDMA symbol exists.

It should be noted that the embodiments of the present invention are not limited to the above three manners, and other manners capable of determining K SC-FDMA symbols are also applicable to the embodiments of the present invention.

Preferably, for the user equipment 10 and the network side equipment 20, the corresponding K of different uplink carriers in the same uplink subframe is the same or different; and the corresponding K of the same uplink carrier in different uplink subframes is the same or different.

In implementation, for the user equipment 10 and the network side equipment 20, the K SC-FDMA symbols are the first K SC-FDMA symbols in the current uplink subframe; or

The K SC-FDMA symbols are the last K SC-FDMA symbols in the current uplink subframe; or

The K SC-FDMA symbols are the first K1 SC-FDMA symbols and the last K2 SC-FDMA symbols in the current uplink subframe, where K1+ K2 ═ K.

Preferably, for the user equipment 10 and the network side equipment 20, if there are SRS and K reserved SC-FDMA in the current uplink subframe at the same time, then: the SRS is transmitted at the last SC-FDMA symbol in the current uplink subframe, and the K SC-FDMA symbols are the first K SC-FDMA symbols in the current uplink subframe; or, the SRS transmits a first SC-FDMA symbol in the current uplink subframe, and the K SC-FDMA symbols are the last K SC-FDMA symbols in the current uplink subframe; specifically, namely: if the SRS transmits the last SC-FDMA symbol in the current uplink subframe, the K SC-FDMA symbols are the first K SC-FDMA symbols in the current uplink subframe; and if the SRS is transmitted in the first SC-FDMA symbol in the current uplink subframe, the K SC-FDMA symbols are the last K SC-FDMA symbols in the current uplink subframe. Or

If the K SC-FDMA symbols are the first K SC-FDMA symbols in the current uplink subframe, the SRS transmits the last SC-FDMA symbol in the current uplink subframe; and if the K SC-FDMA symbols are the last K SC-FDMA symbols in the current uplink subframe, transmitting the SRS at the first SC-FDMA symbol in the current uplink subframe.

Preferably, if the K SC-FDMA symbols are the first K SC-FDMA symbols in the current uplink subframe, the user equipment 10 determines to reserve K SC-FDMA symbols in one uplink subframe only for uplink carriers other than the uplink carrier with the minimum uplink TA, and correspondingly, the network-side equipment 20 determines to reserve K SC-FDMA symbols in one uplink subframe only for uplink carriers other than the uplink carrier with the minimum uplink TA; or the user equipment 10 determines that no SC-FDMA symbol needs to be reserved in one uplink subframe for the uplink carrier with the minimum uplink TA, and correspondingly, the network side equipment 20 determines that no SC-FDMA symbol needs to be reserved in one uplink subframe for the uplink carrier with the minimum uplink TA.

Preferably, if the K SC-FDMA symbols are the first K SC-FDMA symbols in the current uplink subframe, for an uplink carrier, if the uplink TA is smaller than that of other uplink carriers of the uplink carrier and no uplink information is transmitted on the last K SC-FDMA symbols in the previous adjacent uplink subframe of the current uplink subframe, the user equipment 10 determines that the first K SC-FDMA symbols are not reserved for the uplink carrier in the current uplink subframe; accordingly, the network side device 20 determines that the first K SC-FDMA symbols are not reserved for the uplink carrier in the current uplink subframe.

Preferably, if the K SC-FDMA symbols are the last K SC-FDMA symbols in the current uplink subframe, the user equipment 10 determines to reserve K SC-FDMA symbols in one uplink subframe only for uplink carriers other than the uplink carrier with the largest uplink TA, and correspondingly, the network side equipment 20 determines to reserve K SC-FDMA symbols in one uplink subframe only for uplink carriers other than the uplink carrier with the largest uplink TA; or the user equipment 10 determines that an SC-FDMA symbol does not need to be reserved in an uplink subframe for the uplink carrier with the largest uplink TA; accordingly, the network side device 20 determines that the SC-FDMA symbol does not need to be reserved in one uplink subframe for the uplink carrier with the largest uplink TA.

Preferably, if the K SC-FDMA symbols are the last K SC-FDMA symbols in the current uplink subframe, for an uplink carrier, if the uplink TA is greater than that of other uplink carriers of the uplink carrier and no uplink information is transmitted on the first K SC-FDMA symbols in the last adjacent uplink subframe of the current uplink subframe, the user equipment 10 determines that the last K SC-FDMA symbols are not reserved for the uplink carrier in the current uplink subframe; accordingly, the network side device 20 determines that K SC-FDMA symbols are not reserved for the uplink carrier in the current uplink subframe.

In practice, for conventional CP, 0 ≦ K ≦ 14; for extended CP, K is greater than or equal to 0 and less than or equal to 12. When the value of K is determined, K is generally the difference between uplink transmission time advances of different TA groups (if more than three TA groups exist, two TA groups need to be differenced, and for one carrier, if 2 differences exist, the maximum value is taken to determine K), the integral number of SC-FDMA symbols is taken as a unit for calculation and expression, and the integral number of SC-FDMA symbols is less than 1; and may be selected as desired. Preferably, K is 1 or 2.

Preferably, for PUCCH transmission, the ue 10 transmits uplink information using a transmission format based on orthogonal time domain spreading by using SC-FDMA symbols for transmitting uplink information in an uplink subframe except for the reserved K SC-FDMA symbols; correspondingly, the network side device 20 receives the uplink information in a transmission format for performing time domain orthogonal despreading based on other SC-FDMA symbols used for transmitting the uplink information except the reserved K SC-FDMA symbols in one uplink subframe; or, for PUSCH transmission, the user equipment 10 performs rate matching to transmit uplink information based on other SC-FDMA symbols for transmitting uplink information in one uplink subframe except for the reserved K SC-FDMA symbols; correspondingly, the network side device 20 receives the uplink information by performing de-rate matching based on other SC-FDMA symbols for transmitting the uplink information except the reserved K SC-FDMA symbols in one uplink subframe.

Preferably, if K is 1 and K SC-FDMA symbols are the last SC-FDMA symbol in the current uplink subframe, for PUCCH transmission, the ue 10 transmits uplink information in a shortenedppucch format in PUCCH (e.g. shortenedppucch format 1/1a/1b/3, although shortenedPUCCH format 2/2a/2b is not excluded if shortenedPUCCH format is also defined for format 2/2a/2 b); correspondingly, the network side device 20 receives the uplink information through the shortenedppucch format in the PUCCH; or, for PUSCH transmission, the user equipment 10 reserves, on the PUSCH, for transmitting SRS based on the last SC-FDMA symbol for rate matching transmission of Uplink Information (i.e., reuse the transmission mode of PUSCH transmitted in the system SRS subframe in Rel-8/9/10, reserve the last SC-FDMA symbol on PUSCH for transmitting SRS, and use the remaining SC-FDMA symbols (except pilot symbols) for transmitting Uplink data and/or UCI (Uplink Control Information)); accordingly, the network side device 20 reserves the uplink information for transmitting the SRS for de-rate matching on the basis of the last SC-FDMA symbol on the PUSCH to receive the uplink information.

Preferably, if there is a PRACH on an uplink carrier in the previous uplink subframe of the current uplink subframe, the user equipment 10 determines that no uplink information is transmitted in the current uplink subframe on the uplink carriers other than the uplink carrier on which the PRACH is located, and correspondingly, the network side equipment 20 determines that no uplink information is transmitted in the current uplink subframe on the uplink carriers other than the uplink carrier on which the PRACH is located; or the user equipment 10 transmits the SRS only in the last SC-FDMA (i.e., the last SC-FDMA symbol capable of transmitting uplink information, the same applies hereinafter) symbol of the uplink carrier other than the uplink carrier on which the PRACH is located, and correspondingly, the network side equipment 20 receives the SRS only in the last SC-FDMA symbol of the uplink carrier other than the uplink carrier on which the PRACH is located.

Preferably, if all or part of SC-FDMA symbols in the current uplink subframe overlap with the PRACH that is continuously transmitted in at least one uplink subframe (i.e., some or all SC-FDMA symbols of the uplink channel/signal in the current uplink subframe overlap with one continuously transmitted PRACH that does not necessarily start transmission in the current uplink subframe, but may start transmission in one or more uplink subframes before the current uplink subframe and continue for multiple uplink subframes), then one of the following processing manners may be adopted:

mode A: the user equipment 10 determines that no uplink information is transmitted in the current uplink subframe on the uplink carriers other than the uplink carrier on which the PRACH is located, and correspondingly, the network side equipment 20 determines that no uplink information is received in the current uplink subframe on the uplink carriers other than the uplink carrier on which the PRACH is located;

mode B: for uplink carriers other than the uplink carrier where the PRACH is located, if an uplink channel/signal after K SC-FDMA symbols (including a case where K is 0, there is no reserved SC-FDMA symbol at this time) are still overlapped with the PRACH on all or part of SC-FDMA symbols in the current uplink subframe, the user equipment 10 determines that the uplink carrier does not transmit any uplink information in the current uplink subframe, and correspondingly, the network-side device 20 determines that the uplink carrier does not receive any uplink information in the current uplink subframe;

mode C: the user equipment 10 performs power control on the uplink channel/signal in the current uplink subframe based on the transmission power of the PRACH, and transmits the uplink channel/signal in the current uplink subframe according to the transmission power after the power control, and correspondingly, the network side equipment 20 determines to receive uplink information on all uplink carriers in the current uplink subframe.

It should be noted that the uplink channel/signal that may overlap with the PRACH includes at least one or more of a PUCCH, a PUSCH, and an SRS.

It should be noted that, the above modes a and B correspond to the case that the PRACH and other uplink channels/signals are not supported to be transmitted simultaneously, for the mode B, if PRACH (format other than format 4) exists on one uplink carrier in the previous uplink subframe of the current uplink subframe, for uplink carriers other than the uplink carrier where the PRACH is located, if an uplink channel/signal after K SC-FDMA symbols (including a case where K is 0, there is no reserved SC-FDMA symbol at this time) are still overlapped with the PRACH on all or part of SC-FDMA symbols in the current uplink subframe, the network side device 20 may limit the uplink channel/signal by scheduling, or the carriers are pre-configured or agreed with the mode that K is the maximum value, so that the overlapping transmission of uplink channels/signals on the carriers and the PRACH is avoided. For uplink carriers other than the uplink carrier on which the PRACH is located, if uplink channels/signals on the uplink carriers are not overlapped with the PRACH after K SC-FDMA symbols are reserved (including a case where K is 0, there is no reserved SC-FDMA symbol at this time), the user equipment 10 may normally transmit the uplink channels/signals in the current uplink subframe, for example, transmit an SRS in the last SC-FDMA symbol (i.e., configure the current uplink subframe as an SRS subframe); accordingly, the network side device 10 may receive the uplink channel/signal on the corresponding carrier.

It should be noted that, the above-mentioned method C corresponds to the case of supporting the PRACH and other uplink channels/signals to be transmitted simultaneously, the user equipment 10 performs power control on the uplink channel/signal in the current uplink subframe based on the transmission power of the PRACH, i.e. if the total transmit power of the UE in the current uplink subframe exceeds a preset maximum transmit power, when power scaling is performed on an uplink channel/signal in a current uplink subframe, the transmit power of a PRACH is required, regardless of whether the PRACH is sent in the current uplink subframe (that is, the PRACH is sent in a previous uplink subframe or uplink subframes, but is smeared into the current uplink subframe due to TA being 0, or the PRACH needs to continue transmission of a plurality of uplink subframes, so that there is overlap with uplink channels/signals on other uplink carriers except an uplink carrier where the PRACH is located), specifically including: if the channel priority of the PRACH is the highest, the uplink channel in the current uplink subframe is subjected to channel estimationWhen power scaling is carried out on signals, the residual available transmission power after PRACH transmission power is subtracted from the preset maximum transmission power (linear domain: P)_cmax-P_PRACH) And performing proportional power reduction on the uplink channel/signal with the low priority in the sequence from the low priority to the high priority of the channel/signal, until the total transmission power of the UE does not exceed the residual available transmission power.

Preferably, if there is SRS transmission in the last SC-FDMA symbol in the current uplink subframe or the current uplink subframe is an SRS transmission subframe and SRS is transmitted in the last SC-FDMA symbol in an uplink subframe (i.e. the last SC-FDMA symbol capable of transmitting uplink information, the same applies below), the ue 10 determines that 2 SC-FDMA symbols do not transmit uplink information after the uplink channel of the uplink carrier other than the uplink carrier with the largest uplink TA in the current uplink subframe is further reserved (i.e. further reservation is made on the basis of the reserved K SC-FDMA symbols); accordingly, the network-side device 20 determines that the uplink carriers other than the uplink carrier with the maximum uplink TA do not transmit uplink information in 2 SC-FDMA symbols after the uplink channel in the current uplink subframe is further reserved (i.e., further reservation is made on the basis of the reservation of K SC-FDMA symbols). The uplink channel at least comprises one or more of PUCCH, PUSCH and PRACH.

It should be noted that, if there is SRS transmission in the last SC-FDMA symbol in the current uplink subframe, it may further be configured or agreed that the last 2 SC-FDMA symbols of the uplink channel on the uplink carrier other than the uplink carrier with the largest uplink transmission time advance in the current uplink subframe are vacant to not transmit any uplink channel carried information (such as UCI and uplink data), and the SRS may be transmitted in the last SC-FDMA symbol to avoid collision between the SRS and the uplink channel on other carriers with different TAs.

Preferably, if there is SRS transmission in the first SC-FDMA symbol (i.e., the first SC-FDMA symbol capable of transmitting uplink information, the same applies below) in the current uplink subframe or the current uplink subframe is an SRS transmission subframe and SRS is transmitted in the first SC-FDMA symbol in an uplink subframe, the ue 10 determines that uplink channels of uplink carriers in the current uplink subframe except the uplink carrier with the smallest uplink TA are further reserved for the first 2 SC-FDMA symbols not transmitting uplink information (i.e., further reservation is made on the basis of the reservation of K SC-FDMA symbols); accordingly, the network-side device 20 determines that uplink carriers other than the uplink carrier with the smallest uplink TA further reserve the first 2 SC-FDMA symbols in the uplink channel of the current uplink subframe for not transmitting uplink information (i.e., further reserve on the basis of reserving K SC-FDMA symbols). The uplink channel at least comprises one or more of PUCCH, PUSCH and PRACH.

It should be noted that, if there is SRS transmission in the first SC-FDMA symbol in the current uplink subframe, it may further be configured or agreed that the first 2 SC-FDMA symbols of the uplink channel on the uplink carrier other than the uplink carrier with the largest uplink transmission time advance in the current uplink subframe are vacant without transmitting any uplink channel carried information (such as UCI and uplink data), and the SRS may be transmitted in the first SC-FDMA symbol to avoid collision between the SRS and the uplink channel on other carriers with different TAs.

Preferably, the ue 10 only transmits the SRS of the uplink carrier with the same uplink TA in the same uplink subframe; accordingly, the network side device 20 only receives the SRS of the uplink carrier with the same uplink TA in the same uplink subframe. That is, the network side device 20 may be configured in one uplink subframe, where only carriers with the same TA transmit SRS, and SRS of carriers with different TAs transmit in different uplink subframes, so as to avoid that SRS on multiple carriers are not aligned in one uplink subframe due to multiple TAs, which results in more complex power control.

The method comprises the following steps that the user equipment 10 maps uplink information to be transmitted to other SC-FDMA symbols of an uplink carrier on an uplink channel in a current uplink subframe except K SC-FDMA symbols for transmission, and the user equipment 10 determines the actual transmitting power of each uplink channel/signal according to the following method and transmits each uplink channel/signal according to the power:

if no SRS transmission exists in the current uplink subframe:

the user equipment judges whether the sum of target transmitting power (namely transmitting power of the uplink channel on each carrier wave calculated based on each carrier wave and related power control parameters of the uplink channel on the carrier wave) of the uplink channel transmitted in the current uplink subframe exceeds preset maximum transmitting power;

when the power of the uplink channel is reduced, gradually reducing the target transmitting power of the uplink channel with the same uplink channel/signal priority transmitted in the current uplink subframe in an equal proportion according to the sequence of the uplink channel/signal priority from low to high (namely, reducing the transmitting power of the uplink channel with the lowest priority first, when the power is reduced to 0, the total transmitting power of the UE still exceeds the preset maximum transmitting power, further reducing the transmitting power of the uplink channel with the next lower priority, and so on), so that after the power is reduced, the sum of the transmitting powers of the uplink channels transmitted in the current uplink subframe does not exceed the preset maximum transmitting power, and taking the transmitting power after the power is reduced as the actual transmitting power of the uplink channel; taking the target transmitting power of the high-priority uplink channel which is not subjected to power reduction as the actual transmitting power of the high-priority uplink channel;

and when the actual transmission power of each uplink channel is not exceeded, taking the target transmission power of each uplink channel as the actual transmission power of the uplink channel.

If there is SRS transmission in the current uplink subframe and SRS of uplink carriers with different uplink transmission timing advances are transmitted in different uplink subframes (i.e. there is only SRS transmission on uplink carriers with the same uplink transmission timing advance in one uplink subframe, there may be one or more):

the user equipment 10 determines whether the sum of the target transmission powers of the uplink channels transmitted in the current uplink subframe exceeds a preset maximum transmission power;

when the judgment is over, gradually carrying out equal-proportion power reduction on the target transmitting power of the uplink channels with the same uplink channel/signal priority transmitted in the current uplink subframe according to the sequence of the uplink channel/signal priority from low to high so as to meet the condition that the sum of the transmitting power of the uplink channels transmitted in the current uplink subframe does not exceed the preset maximum transmitting power after the power is reduced, and taking the transmitting power after the power is reduced as the actual transmitting power of the uplink channel; taking the target transmitting power of the high-priority uplink channel which is not subjected to power reduction as the actual transmitting power of the high-priority uplink channel;

when the actual transmission power does not exceed the target transmission power, the target transmission power of each uplink channel is taken as the actual transmission power;

further, the user equipment 10 determines whether the sum of the target transmission power of the SRS in the current uplink subframe and the actual transmission power (i.e., the transmission power determined after the power control process for the uplink channel) of the uplink channel on the uplink carrier other than the uplink carrier where the SRS is located (i.e., the uplink channel in the current uplink subframe and in which the SRS has overlapping transmission) exceeds a preset maximum transmission power;

when the judgment is over, carrying out power reduction in an equal proportion on the target transmitting power of the SRS transmitted in the current uplink subframe (wherein the periodic SRS and the non-periodic SRS can be further distinguished, the priority of the non-periodic SRS is higher than that of the periodic SRS, namely, the transmitting power of the non-periodic SRS is preferentially ensured not to be reduced), so that after the power reduction is met, the sum of the transmitting power of the SRS transmitted in the current uplink subframe does not exceed the preset maximum transmitting power minus the actual transmitting power of an uplink channel on an uplink carrier except the uplink carrier where the SRS is located, and taking the transmitting power after the power reduction as the actual transmitting power of the SRS;

when not exceeding, taking the target transmission power of each SRS as the actual transmission power thereof;

preferably, the uplink channel/signal priority may be at least one of the following definitions:

PUCCH > PUSCH carrying UCI > PUSCH not carrying UCI > SRS; or

PUCCH > PUSCH carrying UCI > PUSCH not carrying UCI SRS;

if a PRACH exists, the uplink channel/signal priority may be at least one of the following definitions:

PRACH > PUCCH > PUSCH carrying UCI > PUSCH not carrying UCI > SRS; or

PRACH > PUCCH > PUSCH carrying UCI > PUSCH not carrying UCI (SRS); or

PUCCH > PRACH > PUSCH carrying UCI > PUSCH not carrying UCI > SRS; or

PUCCH > PRACH > PUSCH carrying UCI > PUSCH not carrying UCI.

Wherein the SRS comprises an Aperiodic SRS (Aperiodic-SRS) and a Periodic SRS (Periodic-SRS), and the priority of the Aperiodic SRS can be higher than or equal to that of the Periodic SRS; the aperiodic SRS priority may also be higher than or equal to PUSCH carrying no UCI;

preferably, the preset maximum transmission power may be the maximum transmission power allowed by the user equipment 10, and/or the maximum transmission power allowed by each frequency band; if the uplink channel/signal in the current uplink subframe overlaps with the PRACH and the priority of the PRACH is high (priority is required to ensure that the transmission power is not reduced), for all uplink channels/signals in the current uplink subframe or uplink channels/signals in the current uplink subframe that overlap with the PRACH, when power control is performed according to the above method when SRS is present and SRS is absent, the preset maximum transmission power used may also be the maximum transmission power allowed by the user equipment 10 or the maximum transmission power allowed by the frequency band minus the transmission power of the PRACH.

When SRS transmission exists, when SRSs of uplink carriers with different uplink transmission time leads are transmitted in the same uplink subframe, different SRS transmission time is not aligned, and the collision conditions of uplink channels/signals on other carriers are different, power reduction needs to be respectively carried out on different simultaneous transmission conditions (namely different collision symbols), the same SRS participates in power reduction for multiple times, and the minimum transmitting power in the power reduction calculation for multiple times is taken as the actual transmitting power of the SRS;

in the above power reduction method, other power reduction methods are not excluded, such as proportionally reducing power (i.e. not distinguishing channel priority) for all uplink channels/signals, or performing power reduction according to a power reduction proportional coefficient corresponding to a frequency band.

The Rel-10 power control method is reused in the current uplink subframe as much as possible to determine the transmitting power of each uplink channel/signal, so that the standardization complexity is simplified, and the normal work of user equipment is ensured.

Preferably, the K vacant SC-FDMA symbols of the uplink carrier transmitted by the SRS at the last SC-FDMA symbol are the first K symbols in the current uplink subframe, and meanwhile, to avoid introducing a new PUCCH format definition due to the vacant SC-FDMA symbols, the carrier with the smallest TA should be selected as the uplink primary carrier. Or, in an uplink carrier transmitted by the SRS at the first SC-FDMA symbol, K vacant SC-FDMA symbols are the last K symbols in the current uplink subframe, and meanwhile, in order to avoid that the PUCCH transmission is affected by reserving too many SC-FDMA symbols and to avoid introducing a new PUCCH format definition into a non-SRS subframe, a carrier with the largest TA should be selected as the uplink main carrier.

The uplink channel/signal includes, but is not limited to, an uplink channel PUCCH, PUSCH, PRACH, an uplink signal SRS, and the like; wherein the meaning of the above-mentioned "uplink channel/signal" means: only the uplink channel exists, or only the uplink signal exists, or both the uplink channel and the uplink signal exist simultaneously.

The uplink information comprises uplink control information and uplink data; the uplink control information comprises ACK/NACK, periodic/aperiodic CSI and SR; the CSI in turn includes CQI information, PMI information, RI information, PTI information.

Preferably, the method is applicable to both intra-band and inter-band CA; it is also suitable for FDD (Frequency division duplex) and TDD (Time division duplex) systems.

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 shown in fig. 3, the ue in the system for transmitting uplink information according to the embodiment of the present invention includes: a first determination module 300 and a transmission module 310.

A first determining module 300, configured to determine that K SC-FDMA symbols are reserved in a current uplink subframe for an uplink carrier to not transmit uplink information when there are multiple uplink TAs, where K is a non-negative integer;

and a transmission module 310, configured to map the uplink information to be transmitted to uplink carriers to transmit on other SC-FDMA symbols used for transmitting uplink information, except K SC-FDMA symbols, in the current uplink subframe.

Preferably, the first determining module 300 determines K SC-FDMA symbols according to the configuration of the higher layer signaling or the PDCCH signaling; or determining K SC-FDMA symbols according to the pre-convention with the network side equipment; or judging whether a reserved SC-FDMA symbol exists in a current uplink subframe according to a specific bit field in a PDCCH signaling, if so, determining that K SC-FDMA symbols pre-configured in a high-layer signaling or the PDCCH signaling are K SC-FDMA symbols, and if not, determining that no reserved SC-FDMA symbol exists in the current uplink subframe, wherein the PDCCH is a PDCCH in a downlink subframe corresponding to ACK/NACK feedback in the current uplink subframe and/or a PDCCH corresponding to a PUSCH in the current uplink subframe.

Preferably, the higher layer signaling is RRC signaling or MAC signaling.

Preferably, the corresponding K of different uplink carriers in the same uplink subframe is the same or different; and the corresponding K of the same uplink carrier in different uplink subframes is the same or different.

Preferably, the K SC-FDMA symbols determined by the first determining module 300 are the first K SC-FDMA symbols in the current uplink subframe; or the K SC-FDMA symbols determined by the first determining module 300 are the last K SC-FDMA symbols in the current uplink subframe; or the K SC-FDMA symbols determined by the first determining module 300 are the first K1 SC-FDMA symbols and the last K2 SC-FDMA symbols in the current uplink subframe, wherein K1+ K2 ═ K.

Preferably, the first determining module 300 determines the last SC-FDMA symbol transmission of the SRS in the current uplink subframe, and the K SC-FDMA symbols are the first K SC-FDMA symbols in the current uplink subframe; or

The first determination module 300 determines that the SRS is transmitted in the first SC-FDMA symbol in the current uplink subframe, and the K SC-FDMA symbols are the last K SC-FDMA symbols in the current uplink subframe.

Preferably, if the K SC-FDMA symbols are the first K SC-FDMA symbols in the current uplink subframe, the first determining module 300 determines that the K SC-FDMA symbols are reserved in one uplink subframe only for uplink carriers other than the uplink carrier with the smallest uplink TA, or determines that the SC-FDMA symbols are not required to be reserved in one uplink subframe for the uplink carrier with the smallest uplink TA.

Preferably, if the K SC-FDMA symbols are the first K SC-FDMA symbols in the current uplink subframe, for an uplink carrier, if the uplink TA is smaller than that of other uplink carriers of the uplink carrier, no uplink information is transmitted on the last K SC-FDMA symbols in the previous adjacent uplink subframe of the current uplink subframe, the first determining module 300 determines that the first K SC-FDMA symbols are not reserved for the uplink carrier in the current uplink subframe.

Preferably, if the K SC-FDMA symbols are the last K SC-FDMA symbols in the current uplink subframe, the first determining module 300 determines that the K SC-FDMA symbols are reserved in one uplink subframe only for uplink carriers other than the uplink carrier with the largest uplink TA, or determines that the SC-FDMA symbols are not required to be reserved in one uplink subframe for the uplink carrier with the largest uplink TA.

Preferably, if the K SC-FDMA symbols are the last K SC-FDMA symbols in the current uplink subframe, for an uplink carrier, if other uplink carriers whose uplink TA is greater than the uplink carrier do not transmit uplink information on the first K SC-FDMA symbols in the last adjacent uplink subframe of the current uplink subframe, the first determining module 300 determines that the last K SC-FDMA symbols are not reserved for the uplink carrier in the current uplink subframe.

Preferably, for PUCCH transmission, the transmission module 310 transmits uplink information in a transmission format based on orthogonal time domain spreading on SC-FDMA symbols for transmitting uplink information in an uplink subframe except K SC-FDMA symbols; or, for PUSCH transmission, performing rate matching on the basis of other SC-FDMA symbols for transmitting uplink information except K SC-FDMA symbols in one uplink subframe to transmit the uplink information.

Preferably, if K is 1 and K SC-FDMA symbols are the last SC-FDMA symbol in the current uplink subframe, the transmission module 310 transmits uplink information by using a short PUCCH format for PUCCH transmission; or, for PUSCH transmission, reserving for SRS transmission based on the last SC-FDMA symbol for rate matching transmission of uplink information.

Preferably, if all or part of SC-FDMA symbols in the current uplink subframe overlap with the PRACH that is continuously transmitted in at least one uplink subframe, the first determining module 300 determines that no uplink information is transmitted in the current uplink subframe on uplink carriers other than the uplink carrier on which the PRACH is located; or for uplink carriers except the uplink carrier where the PRACH is located, if an uplink channel/signal after K SC-FDMA symbols are reserved on the uplink carrier in the current uplink subframe is still overlapped with the PRACH on all or part of SC-FDMA symbols, determining that the uplink carrier does not transmit any uplink information in the current uplink subframe; or performing power control on the uplink channel/signal in the current uplink subframe based on the transmitting power of the PRACH, and transmitting the uplink channel/signal in the current uplink subframe according to the transmitting power after the power control;

wherein, the uplink channel/signal at least comprises one or more of PUCCH, PUSCH and SRS.

Preferably, if there is SRS transmission in the last SC-FDMA symbol in the current uplink subframe or the current uplink subframe is an SRS transmission subframe and SRS is transmitted in the last SC-FDMA symbol in an uplink subframe, the first determining module 300 determines that 2 SC-FDMA symbols do not transmit uplink information after uplink channels of uplink carriers in the current uplink subframe other than the uplink carrier with the largest uplink TA are further reserved.

Preferably, if there is SRS transmission in the first SC-FDMA symbol in the current uplink subframe or the current uplink subframe is an SRS transmission subframe and the SRS is transmitted in the first SC-FDMA symbol in an uplink subframe, the first determining module 300 determines that uplink channels of uplink carriers in the current uplink subframe, except the uplink carrier with the smallest uplink TA, further reserve the first 2 SC-FDMA symbols for not transmitting uplink information;

the uplink channel at least comprises one or more of PUCCH, PUSCH and PRACH.

Preferably, the transmission module 310 transmits only the SRS of the uplink carrier with the same uplink TA in the same uplink subframe.

As shown in fig. 4, the network side device in the system for transmitting uplink information according to the embodiment of the present invention includes: a second determining module 400 and a receiving module 410.

A second determining module 400, configured to determine that the uplink carrier reserves K SC-FDMA symbols in the current uplink subframe to not transmit uplink information, where K is a non-negative integer;

a receiving module 410, configured to receive uplink information transmitted by a user equipment having multiple uplink TAs through other SC-FDMA symbols in a current uplink subframe except SC-FDMA symbols not transmitting uplink information through an uplink carrier.

Preferably, the second determining module 400 configures K SC-FDMA symbols for the user equipment through a higher layer signaling or a PDCCH signaling; or informing the K SC-FDMA symbols in a mode predetermined with the user equipment; or informing the user equipment of the K SC-FDMA symbols in advance through high-layer signaling or PDCCH signaling, and configuring whether the user equipment reserves the K SC-FDMA symbols in a current uplink subframe or not through a specific bit field in the PDCCH signaling, wherein the PDCCH is a PDCCH in a downlink subframe corresponding to ACK/NACK feedback in the current uplink subframe and/or is a PDCCH corresponding to a PUSCH in the current uplink subframe.

Preferably, the higher layer signaling is RRC signaling or MAC signaling.

Preferably, the K SC-FDMA symbols determined by the second determining module 400 are the first K SC-FDMA symbols in the current uplink subframe; or the K SC-FDMA symbols determined by the second determining module 400 are the last K SC-FDMA symbols in the current uplink subframe; or the K SC-FDMA symbols determined by the second determining module 400 are the first K1 SC-FDMA symbols and the last K2 SC-FDMA symbols in the current uplink subframe, wherein K1+ K2 ═ K.

Preferably, the second determining module 400 determines the last SC-FDMA symbol transmission of the SRS in the current uplink subframe, and the K SC-FDMA symbols are the first K SC-FDMA symbols in the current uplink subframe; or the second determining module 400 determines that the SRS is transmitted in the first SC-FDMA symbol in the current uplink subframe, and the K SC-FDMA symbols are the last K SC-FDMA symbols in the current uplink subframe.

Preferably, if the K SC-FDMA symbols are the first K SC-FDMA symbols in the current uplink subframe, the second determining module 400 determines that the K SC-FDMA symbols are reserved in one uplink subframe only for uplink carriers other than the uplink carrier with the smallest uplink TA, or determines that the SC-FDMA symbols are not required to be reserved in one uplink subframe for the uplink carrier with the smallest uplink TA.

Preferably, if the K SC-FDMA symbols are the first K SC-FDMA symbols in the current uplink subframe, for an uplink carrier, if the uplink TA is smaller than that of other uplink carriers of the uplink carrier, no uplink information is transmitted on the last K SC-FDMA symbols in the previous adjacent uplink subframe of the current uplink subframe, the second determining module 400 determines that the first K SC-FDMA symbols are not reserved for the uplink carrier in the current uplink subframe.

Preferably, if the K SC-FDMA symbols are the last K SC-FDMA symbols in the current uplink subframe, the second determining module 400 determines that the K SC-FDMA symbols are reserved in one uplink subframe only for uplink carriers other than the uplink carrier with the largest uplink TA, or determines that the SC-FDMA symbols are not required to be reserved in one uplink subframe for the uplink carrier with the largest uplink TA.

Preferably, if the K SC-FDMA symbols are the last K SC-FDMA symbols in the current uplink subframe, for an uplink carrier, if other uplink carriers whose uplink TA is greater than the uplink carrier do not transmit uplink information on the first K SC-FDMA symbols in the next adjacent uplink subframe of the current uplink subframe, the second determining module 400 determines that the last K SC-FDMA symbols are not reserved for the uplink carrier in the current uplink subframe.

Preferably, for PUCCH transmission, the receiving module 410 receives uplink information in a transmission format based on orthogonal time domain despreading by SC-FDMA symbols for transmitting uplink information other than K SC-FDMA symbols in one uplink subframe; or for PUSCH transmission, performing rate de-matching based on other SC-FDMA symbols for transmitting uplink information except K SC-FDMA symbols in one uplink subframe to receive the uplink information.

Preferably, if K is 1 and K SC-FDMA symbols are the last SC-FDMA symbol in the current uplink subframe, the receiving module 410 receives uplink information by using a short PUCCH format for PUCCH transmission; or, for PUSCH transmission, receiving uplink information based on the last SC-FDMA symbol reserved for SRS de-rate matching.

Preferably, if all or part of SC-FDMA symbols of the uplink channel/signal in the current uplink subframe overlap with the PRACH that is continuously transmitted in at least one uplink subframe, the second determining module 400 determines that no uplink information is transmitted in the current uplink subframe on the uplink carriers other than the uplink carrier on which the PRACH is located; or for uplink carriers except the uplink carrier where the PRACH is located, if an uplink channel/signal after K SC-FDMA symbols are reserved on the uplink carrier in the current uplink subframe is still overlapped with the PRACH on all or part of SC-FDMA symbols, determining that the uplink carrier does not receive any uplink data in the current uplink subframe; or determining that each uplink carrier in the current uplink subframe receives uplink information;

Preferably, if there is SRS transmission in the last SC-FDMA symbol in the current uplink subframe or the current uplink subframe is an SRS transmission subframe and SRS is transmitted in the last SC-FDMA symbol in an uplink subframe, the second determining module 400 determines that 2 SC-FDMA symbols do not transmit uplink information after uplink channels of uplink carriers in the current uplink subframe other than the uplink carrier with the largest uplink TA are further reserved; or, if there is SRS transmission in the first SC-FDMA symbol in the current uplink subframe or the current uplink subframe is an SRS transmission subframe and the SRS is transmitted in the first SC-FDMA symbol in one uplink subframe, the second determining module 400 determines that the uplink channel of the uplink carrier in the current uplink subframe except the uplink carrier with the minimum uplink TA further reserves the first 2 SC-FDMA symbols for not transmitting the uplink information;

the uplink channel at least comprises one or more of PUCCH, PUSCH and PRACH.

Preferably, the receiving module 410 receives the SRS of only the uplink carrier with the same uplink TA in the same uplink subframe.

Based on the same inventive concept, the embodiments of the present invention further provide methods for transmitting uplink information and receiving uplink information, and because the principles of solving the problems of these methods are respectively similar to the user equipment and the network side equipment in the system for transmitting uplink information, the implementation of these equipment can refer to the implementation of the system, and the repeated parts are not described again.

As shown in fig. 5, the method for transmitting uplink information according to the embodiment of the present invention includes the following steps:

step 501, a user equipment with a plurality of uplink TAs determines that an uplink carrier reserves K single carrier frequency division multiple access (SC-FDMA) symbols in a current uplink subframe to not transmit uplink information, wherein K is a non-negative integer;

step 502, the user equipment maps the uplink information to be transmitted to the uplink carrier for transmission on other SC-FDMA symbols used for transmitting the uplink information except the K SC-FDMA symbols in the current uplink subframe.

It should be noted that the SC-FDMA symbols for transmitting uplink information, except for the K SC-FDMA symbols, are: the SC-FDMA symbols included in an uplink channel in one uplink subframe are the SC-FDMA symbols except reserved K SC-FDMA symbols, SC-FDMA symbols used for transmitting pilot frequency RS and SC-FDMA symbols reserved for SRS transmission when SRS transmission exists or the current subframe is a system SRS subframe.

Preferably, in step 501, the user equipment directly determines K SC-FDMA symbols according to the configuration of the high-level signaling or the PDCCH signaling; or the user equipment determines K SC-FDMA symbols according to the prearrangement with the network side equipment; or the user equipment judges whether reserved SC-FDMA symbols exist in the current uplink subframe according to a specific bit field in the PDCCH signaling, when the reserved SC-FDMA symbols exist, K SC-FDMA symbols pre-configured in a high-level signaling or the PDCCH signaling are further determined to be the reserved K SC-FDMA symbols, and when the reserved SC-FDMA symbols do not exist, the unreserved SC-FDMA symbols in the current uplink subframe are determined, wherein the PDCCH is a PDCCH in a downlink subframe corresponding to ACK/NACK feedback in the current uplink subframe and/or is a PDCCH corresponding to a PUSCH (physical uplink shared channel) in the current uplink subframe.

Preferably, the higher layer signaling is radio resource control, RRC, signaling or medium access control, MAC, signaling.

Preferably, the high layer signaling or PDCCH signaling configuration, or the user equipment and the network side equipment agree, each TA group corresponds to a reserved SC-FDMA symbol set, and the reserved SC-FDMA symbols in each uplink subframe of each carrier belonging to the TA group are part or all SC-FDMA symbols in the set, and are selected through signaling notification or in an agreed manner.

Preferably, the corresponding K of different uplink carriers in the same uplink subframe is the same or different;

and the corresponding K of the same uplink carrier in different uplink subframes is the same or different.

Preferably, the K SC-FDMA symbols are the first K SC-FDMA symbols in the current uplink subframe; or the K SC-FDMA symbols are the last K SC-FDMA symbols in the current uplink subframe; or the K SC-FDMA symbols are the first K1 SC-FDMA symbols and the last K2 SC-FDMA symbols in the current uplink subframe, wherein K1+ K2 ═ K.

Preferably, the SRS is transmitted in the last SC-FDMA symbol in the current uplink subframe, and the K SC-FDMA symbols are the first K SC-FDMA symbols in the current uplink subframe; or the SRS is transmitted at the first SC-FDMA symbol in the current uplink subframe, and the K SC-FDMA symbols are the last K SC-FDMA symbols in the current uplink subframe.

Preferably, if the K SC-FDMA symbols are the first K SC-FDMA symbols in the current uplink subframe, in step 501, the ue determines the K SC-FDMA symbols, and further includes:

the user equipment determines that K SC-FDMA symbols are reserved in one uplink subframe only for uplink carriers other than the uplink carrier with the minimum uplink TA, or the user equipment determines that the SC-FDMA symbols do not need to be reserved in one uplink subframe for the uplink carrier with the minimum uplink TA.

for one uplink carrier, if other uplink carriers of which the uplink TA is smaller than the uplink carrier do not transmit uplink information on the last K SC-FDMA symbols in the previous adjacent uplink subframe of the current uplink subframe, the user equipment determines that the first K SC-FDMA symbols are not reserved for the uplink carrier in the current uplink subframe.

Preferably, if the K SC-FDMA symbols are the last K SC-FDMA symbols in the current uplink subframe, in step 501, the ue determines the K SC-FDMA symbols, and further includes:

the user equipment determines that K SC-FDMA symbols are reserved in one uplink subframe only for uplink carriers except the uplink carrier with the maximum uplink TA, or the user equipment determines that the SC-FDMA symbols do not need to be reserved in one uplink subframe for the uplink carrier with the maximum uplink TA.

for one uplink carrier, if other uplink carriers of which the uplink TA is greater than the uplink carrier do not transmit uplink information on the first K SC-FDMA symbols in the next adjacent uplink subframe of the current uplink subframe, the user equipment determines that the last K SC-FDMA symbols are not reserved for the uplink carrier in the current uplink subframe.

Preferably, in step 502, mapping, by the ue, the uplink information to be transmitted to other SC-FDMA symbols used for transmitting uplink information besides the K SC-FDMA symbols in the current uplink subframe for transmission by the uplink carrier includes:

for PUCCH transmission, the user equipment transmits uplink information by adopting a transmission format of carrying out time domain orthogonal spread spectrum on the basis of SC-FDMA symbols for transmitting the uplink information except K SC-FDMA symbols in one uplink subframe; or,

for PUSCH transmission, the user equipment transmits the uplink information by adopting rate matching based on other SC-FDMA symbols for transmitting the uplink information except K SC-FDMA symbols in one uplink subframe.

Preferably, in step 502, if K is 1 and K SC-FDMA symbols are the last SC-FDMA symbol in the current uplink subframe, the ue maps the uplink information to be transmitted to other SC-FDMA symbols used for transmitting uplink information in the current uplink subframe except the K SC-FDMA symbols for transmission on the uplink carrier, and further includes:

for PUCCH transmission. The user equipment transmits uplink information by using short PUCCH format; or,

for PUSCH transmission, the user equipment reserves the uplink information for transmitting SRS based on the last SC-FDMA symbol for rate matching transmission.

Preferably, if all or part of SC-FDMA symbols in the current uplink subframe overlap with the PRACH, which is a physical random access channel that is continuously transmitted in at least one uplink subframe, the user equipment determines that no uplink information is transmitted in the current uplink subframe on uplink carriers other than the uplink carrier on which the PRACH is located; or

For uplink carriers except the uplink carrier where the PRACH is located, if an uplink channel/signal after K SC-FDMA symbols are reserved on the uplink carrier in the current uplink subframe and still overlaps with the PRACH on all or part of SC-FDMA symbols, the user equipment determines that the uplink carrier does not transmit any uplink information in the current uplink subframe; or

The user equipment performs power control on an uplink channel/signal in the current uplink subframe based on the transmitting power of the PRACH, and transmits the uplink channel/signal in the current uplink subframe according to the transmitting power after the power control;

Preferably, if there is SRS transmission in the last SC-FDMA symbol in the current uplink subframe or the current uplink subframe is an SRS transmission subframe and SRS is transmitted in the last SC-FDMA symbol in an uplink subframe, the user equipment determines that 2 SC-FDMA symbols do not transmit uplink information after uplink channels of uplink carriers in the current uplink subframe except the uplink carrier with the largest uplink TA are further reserved; or,

if SRS transmission exists in a first SC-FDMA symbol in a current uplink subframe or the current uplink subframe is an SRS transmission subframe and SRS transmission is carried out in the first SC-FDMA symbol in the uplink subframe, the user equipment determines that uplink carriers except the uplink carrier with the minimum uplink TA are further reserved for the first 2 SC-FDMA symbols in an uplink channel of the current uplink subframe to not transmit uplink information;

the uplink channel at least comprises one or more of PUCCH, PUSCH and PRACH.

Preferably, the ue only has SRS transmission of uplink carriers with the same uplink TA in the same uplink subframe.

As shown in fig. 6, the method for receiving uplink information according to the embodiment of the present invention includes the following steps:

601, a network side device determines that an uplink carrier reserves K SC-FDMA symbols in a current uplink subframe to not transmit uplink information, wherein K is a non-negative integer;

step 602, the network side device receives uplink information transmitted by a user equipment with a plurality of uplink TAs through other SC-FDMA symbols in the current uplink subframe except SC-FDMA symbols not transmitting uplink information through uplink carriers.

Preferably, the network side device configures K SC-FDMA symbols for the user equipment through a high-level signaling or a PDCCH signaling; or the network side equipment informs the K SC-FDMA symbols in a mode predetermined with the user equipment; or the network side equipment informs the user equipment of the K SC-FDMA symbols in advance through high-level signaling or PDCCH signaling, and configures whether the user equipment reserves the K SC-FDMA symbols in a current uplink subframe or not through a specific bit field in the PDCCH signaling, wherein the PDCCH is a PDCCH in a downlink subframe corresponding to positive Acknowledgement (ACK)/Negative Acknowledgement (NACK) feedback in the current uplink subframe and/or is a PDCCH corresponding to a PUSCH in the current uplink subframe.

Preferably, the higher layer signaling is RRC signaling or MAC signaling.

Preferably, if the K SC-FDMA symbols are the first K SC-FDMA symbols in the current uplink subframe, in step 601, the network side device determines the K SC-FDMA symbols, and further includes:

the network side equipment determines that K SC-FDMA symbols are reserved in an uplink subframe only for uplink carriers except the uplink carrier with the minimum uplink TA, or the network side equipment determines that the SC-FDMA symbols do not need to be reserved in the uplink subframe for the uplink carrier with the minimum uplink TA.

for an uplink carrier, if other uplink carriers of which uplink TA is smaller than the uplink carrier do not transmit uplink information on the last K SC-FDMA symbols in the previous adjacent uplink subframe of the current uplink subframe, the network side device determines that the first K SC-FDMA symbols are not reserved for the uplink carrier in the current uplink subframe.

Preferably, if the K SC-FDMA symbols are the last K SC-FDMA symbols in the current uplink subframe, in step 601, the network side device determines the K SC-FDMA symbols, and further includes:

the network side equipment determines that K SC-FDMA symbols are reserved in an uplink subframe only for uplink carriers except the uplink carrier with the maximum uplink TA, or the network side equipment determines that the SC-FDMA symbols do not need to be reserved in the uplink subframe for the uplink carrier with the maximum uplink TA.

for an uplink carrier, if other uplink carriers of which uplink TA is greater than the uplink carrier do not transmit uplink information on the first K SC-FDMA symbols in the next adjacent uplink subframe of the current uplink subframe, the network side device determines that the last K SC-FDMA symbols are not reserved for the uplink carrier in the current uplink subframe.

Preferably, in step 602, the receiving, by the network side device, the uplink information transmitted by the user equipment having multiple uplink TAs in the current uplink subframe through other SC-FDMA symbols except the SC-FDMA symbol not transmitting the uplink information by using the uplink carrier includes:

for PUCCH transmission, network side equipment receives uplink information by adopting a transmission format for carrying out time domain orthogonal de-spreading on the basis of SC-FDMA symbols for transmitting the uplink information except K SC-FDMA symbols in an uplink subframe; or,

for PUSCH transmission, the network side equipment receives the uplink information by performing rate de-matching based on other SC-FDMA symbols used for transmitting the uplink information except K SC-FDMA symbols in one uplink subframe.

Preferably, if K is 1 and K SC-FDMA symbols are the last SC-FDMA symbol in the current uplink subframe, the network side device receives uplink information transmitted by a user equipment with multiple uplink TAs in other SC-FDMA symbols in the current uplink subframe except for the SC-FDMA symbol not transmitting the uplink information through the uplink carrier, further comprising:

for PUCCH transmission, network side equipment receives uplink information by using short PUCCH format; or

For PUSCH transmission, the network side equipment is reserved for SRS transmission to perform de-rate matching and receive uplink information based on the last SC-FDMA symbol.

Preferably, if all or part of SC-FDMA symbols of the uplink channel/signal in the current uplink subframe overlap with the PRACH that is continuously transmitted in at least one uplink subframe, the method further includes:

the network side equipment determines that no uplink information is received in the current uplink subframe on the uplink carrier except the uplink carrier where the PRACH is located; or

For uplink carriers except the uplink carrier where the PRACH is located, if an uplink channel/signal after K SC-FDMA symbols are reserved on the uplink carrier in the current uplink subframe and still overlaps with the PRACH on all or part of SC-FDMA symbols, the network side equipment determines that the uplink carrier does not receive any uplink data in the current uplink subframe; or

The network side equipment determines that each uplink carrier in the current uplink subframe receives uplink information;

Preferably, the method further comprises: if SRS transmission exists in the last SC-FDMA symbol in the current uplink subframe or the current uplink subframe is an SRS transmission subframe and SRS transmission exists in the last SC-FDMA symbol in the uplink subframe, the network side equipment determines that uplink carriers except the uplink carrier with the maximum uplink TA are not transmitted by the 2 SC-FDMA symbols after the uplink channels of the current uplink subframe are further reserved; or,

if SRS transmission exists in a first SC-FDMA symbol in a current uplink subframe or the current uplink subframe is an SRS transmission subframe and SRS transmission is carried out in the first SC-FDMA symbol in the uplink subframe, the network side equipment determines that uplink channels of uplink carriers in the current uplink subframe except the uplink carrier with the minimum uplink TA further reserve the first 2 SC-FDMA symbols to not transmit uplink information;

the uplink channel at least comprises one or more of PUCCH, PUSCH and PRACH.

Preferably, the network side device only receives the SRS of the uplink carrier with the same uplink TA in the same uplink subframe.

Fig. 5 and fig. 6 may combine a flow to form another method for transmitting uplink information, that is, step 501 to step 502 are executed first, and then step 602 is executed. There is no necessary relation between step 602 and step 501 and step 502, and it is only necessary to ensure that step 602 is preceded.

The following describes the scheme of the present invention by further listing several scenarios.

Scene one: the UE aggregates 3 carriers for uplink transmission, where the TA of carriers 1 and 2 is smaller than that of carrier 3 by about 0.5 SC-FDMA symbols, and the TA of carriers 1 and 2 is different from that of carrier 3, the last SC-FDMA symbol of carrier 1 and carrier 2 in the current uplink subframe partially overlaps with the first SC-FDMA symbol of carrier 3 in the next adjacent uplink subframe, and at this time:

the UE side:

the method comprises the following steps:

the method comprises the steps that UE receives high-level signaling or PDCCH signaling sent by a base station or UE and the base station agree in advance, and the last SC-FDMA symbol of all uplink subframes on carriers 1 and 2 is determined not to transmit any uplink information in an empty mode; the TA of the carrier 3 is maximum, and the last SC-FDMA symbol of the uplink channel/signal on the carrier is not overlapped with the first SC-FDMA symbol in the next adjacent uplink subframe on other carriers, so that no SC-FDMA symbol needs to be left for the uplink channel/signal on the carrier 3 to ensure the transmission efficiency of the uplink channel/signal; as shown in fig. 7, regardless of whether there is overlap in the current subframe, it is necessary to null the last SC-FDMA symbol in the current subframe for carrier 1 and carrier 2;

in a subframe i, a PUCCH of the UE on a carrier 1 is transmitted by adopting a short PUCCH format; PUSCH on Carrier 2 is rate matched for transmission based on the last SC-FDMA symbol null;

the method 2 comprises the following steps:

determining a null symbol in each subframe according to a specific transmission condition, as shown in fig. 8, for a subframe i-1, if there is uplink channel transmission on a carrier 3 in a next adjacent subframe i, the last SC-FDMA symbol of the uplink channels on carriers 1 and 2 in the subframe i-1 needs to be nulled; for the subframe i, if no uplink channel is transmitted on the carrier 3 in the next adjacent subframe i +1, the last SC-FDMA symbol of the uplink channels on the carriers 1 and 2 in the subframe i is not required to be vacant, so that the transmission efficiency is improved;

in a subframe i-1, a PUCCH of the UE on a carrier 1 is transmitted by adopting a short PUCCH format; PUSCH on Carrier 2 is rate matched for transmission based on the last SC-FDMA symbol null; in the subframe i, the SC-FDMA symbol is not required to be vacant, and each uplink channel is transmitted by adopting a conventional mode.

Determining the transmission power:

the UE calculates the target transmitting power of the uplink channel on each carrier according to the power control parameter and the power control formula on each carrier, judges whether the sum of the transmitting powers of the UE in the current subframe i exceeds the maximum transmitting power, and transmits each uplink channel according to the target transmitting power if the sum does not exceed the maximum transmitting power; if the sum of the PUSCH transmitting power on the carrier 2 and the PUSCH transmitting power on the carrier 3 does not exceed the maximum transmitting power minus the transmitting power of the PUCCH on the carrier 1 after the power is reduced, preferentially ensuring that the PUCCH transmitting power is not reduced according to the priority of the channel; and the PUCCH transmits at the target transmission power, and the PUSCH transmits at the transmission power after the power is reduced.

A base station side:

consistent with the understanding of the UE end, for the method 1, determining that the PUCCH on the carrier 1 in each uplink subframe is received by using short PUCCH format, and performing de-rate matching reception on the PUSCH on the carrier 2 based on the last SC-FDMA symbol space; for method 2, in sub-frame i-1, the receiving method is the same as method 1, and in sub-frame i, the receiving is performed according to the conventional method.

Scene two: the UE aggregates 4 carriers for uplink transmission, where the TA groups are different, the TA of carrier 2 leads carrier 1 by about 0.5 SC-FDMA symbol, and the TA of carriers 3 and 4 leads carrier 1 by about 0.8 SC-FDMA symbol, so that the first SC-FDMA symbol of carriers 3 and 4 in uplink subframe i partially overlaps with the last SC-FDMA symbol of carriers 1 and 2 in adjacent uplink subframe i-1, the first SC-FDMA symbol of carrier 2 in uplink subframe i partially overlaps with the last SC-FDMA symbol of carrier 1 in adjacent uplink subframe i +1, and the SRS is transmitted in the last SC-FDMA symbol, where:

the UE side:

mode 1:

the UE receives a high-level signaling or a PDCCH signaling sent by the base station or the UE and the base station agree in advance, and determines that no uplink information is transmitted in the first SC-FDMA symbol of the current or all uplink subframes on carriers 2, 3, and 4, as shown in fig. 9; because the TA of the carrier 1 is minimum, the first SC-FDMA symbol of the uplink channel/signal on the carrier 1 cannot be transmitted simultaneously with the last SC-FDMA symbol in the previous adjacent uplink subframe on other carriers, and therefore, any SC-FDMA symbol does not need to be vacant for the uplink channel/signal on the carrier 1 to ensure the transmission efficiency of the uplink channel/signal;

in the current subframe i: the UE has SRS and PUCCH transmission on the carrier 1 at the same time, when configuration supports the SRS and ACK/NACK simultaneous transmission, the short PUCCH format is adopted to transmit the PUCCH, otherwise, the SRS is discarded, and the normal PUCCH format is adopted to transmit; the UE only has PUSCH transmission on the carrier 2, and the first SC-FDMA symbol is vacant, and then the PUSCH is subjected to rate matching transmission based on the first SC-FDMA symbol is vacant; the UE simultaneously has SRS and PUSCH transmission on a carrier 3, and the first SC-FDMA symbol is vacant, the PUSCH is subjected to rate matching transmission based on the first SC-FDMA symbol vacancy and the last SC-FDMA symbol reservation; the UE only has SRS transmission on the carrier 4, and the first SC-FDMA symbol is vacant, so that the UE transmits the SRS on the last SC-FDMA symbol of the carrier;

the UE calculates the target transmitting power of the uplink channel on each carrier according to the power control parameter and the power control formula on each carrier, and reduces the power according to the following steps:

step 1: judging whether the sum of the target transmitting power of the PUCCH on the carrier 1 and the target transmitting power of the PUSCH on the carriers 2 and 3 in the current subframe i exceeds the maximum transmitting power, if so, preferentially ensuring that the transmitting power of the PUCCH is not reduced according to the priority of a channel, and carrying out equal proportion power reduction on the PUSCH on the carrier 2 and the carrier 3 to meet the requirement, wherein after the power is reduced, the sum of the transmitting power of the PUSCH on the carriers 2 and 3 in the current subframe i does not exceed the maximum transmitting power minus the transmitting power of the PUCCH on the carrier 1, and the actual transmitting power of the PUSCH on the carriers 2 and 3 is obtained; otherwise, taking the target transmission power of the PUSCH on the carriers 2 and 3 as the actual transmission power;

step 2: judging whether the sum of the target transmitting power of the PUCCH on the carrier 1, the actual transmitting power of the PUSCH on the carrier 2 (namely the power obtained in the step 1) and the target transmitting power of the SRS on the carriers 3 and 4 in the current subframe i exceeds the maximum transmitting power, if so, carrying out power reduction on the SRS on the carriers 3 and 4 in equal proportion so as to ensure that the sum of the transmitting power of the SRS on the carriers 3 and 4 after power reduction does not exceed the maximum transmitting power minus the actual transmitting power of the PUCCH on the carrier 1 and the PUSCH on the carrier 2, and recording the transmitting power P3 and P4 after the SRS power reduction on the carriers 3 and 4; if not, recording the target transmission power of the SRS on the carriers 3 and 4 as P3 and P4;

and step 3: judging whether the sum of the target transmission power of the SRS on the carrier 1, the actual transmission power of the PUSCH on the carrier 2 (namely the power obtained in the step 1) and the target transmission power of the SRS on the carriers 3 and 4 in the current subframe i exceeds the maximum transmission power, if so, carrying out equal proportion power reduction on the SRS on the carriers 1, 3 and 4 so as to ensure that the sum of the transmission power of the SRS on the carriers 1, 3 and 4 after power reduction does not exceed the maximum transmission power minus the actual transmission power of the PUSCH on the carrier 2, obtaining the actual transmission power of the SRS on the carrier 1 after power reduction, and recording the transmission power P3 'and P4' after the SRS power reduction on the carriers 3 and 4; if not, determining that the target transmission power of the SRS on the carrier 1 is the actual transmission power, and recording the target transmission power of the SRS on the carriers 3 and 4 as P3 'and P4';

and 4, step 4: determining the smaller of the P3 and P3' as the actual transmission power of the SRS on carrier 3; determining the smaller of P4 and P4' as the actual transmission power of the SRS on carrier 4;

mode 2:

the specific idle condition is the same as mode 1; furthermore, considering that there is a partial overlap between the SRS of uplink carriers 3 and 4 with the largest TA and the last 2 SC-FDMA symbols of the uplink channels of carrier 1 and carrier 2, in order to avoid simultaneous SRS transmission on 2 SC-FDMA symbols and uplink channels on other carriers, the last 2 SC-FDMA symbols in the current subframes on carrier 1 and carrier 2 may be additionally configured or agreed not to transmit any information (such as UCI and uplink data) carried by the uplink channels, but the SRS may be transmitted on the last SC-FDMA symbol; as shown in fig. 10;

in a current subframe i, UE simultaneously has SRS and PUCCH transmission on a carrier 1, the PUCCH needs to be vacant for transmitting last 2 SC-FDMA symbols, a new PUCCH format needs to be defined at the moment, a new time domain spreading length is adopted, the data is prevented from being mapped to the last 2 SC-FDMA symbols, and the SRS is transmitted on the last SC-FDMA symbol; the UE only has PUSCH transmission on the carrier 2, and the first SC-FDMA symbol is vacant, the last 2 SC-FDMA symbols are vacant, and then the PUSCH is subjected to rate matching transmission based on the first and the last 2 SC-FDMA symbol vacant; the UE has SRS and PUSCH transmission at the same time on the carrier 3, and only the first SC-FDMA symbol is vacant, then the PUSCH is subjected to rate matching transmission based on the first SC-FDMA symbol vacant and the last SC-FDMA symbol reserved for the SRS; the UE only has SRS transmission on a carrier 4, and only the first SC-FDMA symbol is vacant, so that the SRS is transmitted on the last SC-FDMA symbol of the carrier;

step 2: judging whether the target transmitting power of the SRS on the carrier 1 and the sum of the target transmitting powers of the SRSs on the carriers 3 and 4 in the current subframe i exceed the maximum transmitting power, if so, carrying out equal proportion power reduction on the SRSs on the carriers 1, 3 and 4 so as to meet the condition that the sum of the transmitting powers of the SRSs on the carriers 1, 3 and 4 after the power reduction does not exceed the maximum transmitting power, and obtaining the actual transmitting power of the SRS on the carriers 1, 3 and 4; if not, determining the target transmission power of the SRS on the carriers 1, 3 and 4 as the actual transmission power;

a base station side:

consistent with the understanding of the UE side, for mode 1: in the current subframe i: if the SRS and the ACK/NACK are supported to be transmitted simultaneously, using short PUCCH format to receive the PUCCH and the SRS on the carrier 1, and otherwise, using normal PUCCH format to receive the PUCCH; performing de-rate matching on carrier 2 based on the first SC-FDMA symbol space to receive PUSCH; performing de-rate matching on carrier 3 based on the first SC-FDMA symbol null and the last SC-FDMA symbol transmission SRS to receive PUSCH and SRS; the SRS is received on the last SC-FDMA symbol on carrier 4.

For mode 2: in the current subframe i: if the SRS and the ACK/NACK are supported to be transmitted simultaneously, the PUCCH and the SRS are received by adopting the new PUCCH format with the vacant last 2 SC-FDMA symbols on the carrier 1, otherwise, the PUCCH is received by adopting the new PUCCH format with the vacant last 2 SC-FDMA symbols; performing de-rate matching on carrier 2 based on the first and last 2 SC-FDMA symbol nulls to receive PUSCH; performing de-rate matching on a carrier 3 based on the first SC-FDMA symbol null and the last SC-FDMA symbol transmission SRS to receive PUSCH and SRS; the SRS is received on the last SC-FDMA symbol on carrier 4.

It should be noted that, in the foregoing process, preferably, when it is determined that, for an uplink carrier, the uplink carrier whose TA in the previous adjacent uplink subframe of the current uplink subframe is smaller than the carrier has no data transmission on the last SC-FDMA symbol (that is, there is no uplink channel/signal transmission on the uplink carrier whose TA in the previous adjacent uplink subframe is smaller than the carrier, or the PUCCH is shortenedformat and the last SC-FDMA symbol has no SRS transmission, or the PUSCH is rate-matched based on the last SC-FDMA symbol and the last SC-FDMA symbol has no SRS transmission), the previous K SC-FDMA symbols may not be left in the current uplink subframe, that is, K is 0.

Scene three:

the UE aggregates 4 carriers for uplink transmission, where the TA groups are different, the TA of carrier 2 leads carrier 1 by about 0.5 SC-FDMA symbol, and the TA of carriers 3 and 4 leads carrier 1 by about 0.8 SC-FDMA symbol, so that the first SC-FDMA symbol of carriers 3 and 4 in uplink subframe i partially overlaps with the last SC-FDMA symbol of carriers 1 and 2 in adjacent uplink subframe i-1, the first SC-FDMA symbol of carrier 2 in uplink subframe i partially overlaps with the last SC-FDMA symbol of carrier 1 in adjacent uplink subframe i +1, the SRS is transmitted in the last SC-FDMA symbol, and there is only one transmission of TA in one uplink subframe, when:

the UE side:

the UE receives a high-level signaling or a PDCCH signaling sent by the base station or the UE and the base station agree in advance, and determines that no uplink information is transmitted in the first SC-FDMA symbol of the current or all uplink subframes on carriers 2, 3, and 4, as shown in fig. 11; because the TA of the carrier 1 is minimum, the first SC-FDMA symbol of the uplink channel/signal on the carrier 1 cannot be transmitted simultaneously with the last SC-FDMA symbol in the previous adjacent uplink subframe on other carriers, and therefore, any SC-FDMA symbol does not need to be vacant for the uplink channel/signal on the carrier 1 to ensure the transmission efficiency of the uplink channel/signal;

in the current subframe i: the UE only has PUCCH transmission on the carrier 1 and adopts normal PUCCH format transmission; if only PUSCH transmission exists on the carrier 2 and the first SC-FDMA symbol is vacant, performing rate matching transmission on the PUSCH based on the first SC-FDMA symbol is vacant; when the SRS and the PUSCH are transmitted at the same time on the carrier 3 and the first SC-FDMA symbol is vacant, performing rate matching transmission on the PUSCH based on the first SC-FDMA symbol vacant and the last SC-FDMA symbol reserved for the SRS, and transmitting the SRS on the last SC-FDMA symbol; only SRS transmission exists in a carrier 4, and the first SC-FDMA symbol is vacant, the UE transmits SRS in the last SC-FDMA symbol of the carrier;

step 2: judging whether the target transmitting power of the SRS on the carrier 3 and the carrier 4 in the current subframe i and the sum of the actual transmitting power of the PUCCH on the carrier 1 and the actual transmitting power of the PUSCH on the carrier 2 exceed the maximum transmitting power or not, if so, carrying out power reduction on the SRS on the carrier 3 and the carrier 4 in an equal proportion manner so as to ensure that the sum of the transmitting power of the SRS on the carrier 3 and the SRS 4 after power reduction does not exceed the maximum transmitting power minus the actual transmitting power of the PUCCH on the carrier 1 and the actual transmitting power of the PUSCH on the carrier 2, and obtaining the actual transmitting power of the SRS on the carrier 3 and the carrier 4; if not, determining the target transmission power of the SRS on the carriers 3 and 4 as the actual transmission power;

a base station side:

consistent with the understanding of the UE side, in the current subframe i, the base station receives the PUCCH on carrier 1 by using normal PUCCH ofdm; performing de-rate matching on carrier 2 based on the first SC-FDMA symbol space to receive PUSCH; performing de-rate matching on carrier 3 based on the first SC-FDMA symbol null and the last SC-FDMA symbol transmission SRS to receive PUSCH and SRS; the SRS is received on the last SC-FDMA symbol determined on carrier 4.

It should be noted that, in the foregoing process, preferably, when it can be determined that, for an uplink carrier, the uplink carrier whose TA in the previous adjacent uplink subframe of the current uplink subframe is smaller than the carrier has no data transmission on the last SC-FDMA symbol (that is, there is no uplink channel/signal transmission on the uplink carrier whose TA in the previous adjacent uplink subframe is smaller than the carrier, or the PUCCH is shortenedformat and the last SC-FDMA symbol has no SRS transmission, or the PUSCH is rate-matched based on the last SC-FDMA symbol and the last SC-FDMA symbol has no SRS transmission), the previous K SC-FDMA symbols may not be left in the current uplink subframe, that is, K is 0.

In a fourth scenario, the UE aggregates 4 carriers for uplink transmission, where the TA groups are different, and the TAs of carriers 1 and 2 precede carriers 3 and 4 by about 0.5 SC-FDMA symbols, so that the last SC-FDMA symbol of carriers 3 and 4 in an uplink subframe i partially overlaps with the first SC-FDMA symbol of carriers 1 and 2 in an adjacent uplink subframe i +1, the SRS is transmitted in the first SC-FDMA symbol, and there is only SRS transmission of one TA in one uplink subframe, where:

the UE side:

the UE receives a high-level signaling or a PDCCH signaling sent by the base station or the UE and the base station agree in advance, and determines that no uplink information is transmitted in the last SC-FDMA symbol of the current or all uplink subframes on the carriers 3 and 4, as shown in fig. 12; because the TA of the carriers 1 and 2 is maximum, the last SC-FDMA symbol of the uplink channel/signal on the carriers is not transmitted simultaneously with the first SC-FDMA symbol in the next adjacent uplink subframe on other carriers, so that no SC-FDMA symbol needs to be left for the uplink channel/signal on the carriers 1 and 2 to ensure the transmission efficiency of the uplink channel/signal;

in the current subframe i: the UE has PUCCH and SRS transmission at the same time on a carrier 1, when the SRS and ACK/NACK transmission are supported, a new short PUCCH format needs to be defined to support the SRS to transmit on a first SC-FDMA symbol, a simpler realization mode is that time domain orthogonal spread spectrum sequences used by 2 slots of the short PUCCH format in Rel-10 are exchanged, namely the first slot uses the time domain orthogonal spread spectrum sequence with the length of 4, mapping is started from a second SC-FDMA symbol, the second slot uses the time domain orthogonal spread spectrum sequence with the length of 5, the SRS transmits on the first SC-FDMA symbol, otherwise, the SRS is discarded, and the normal PUCCH format transmission is adopted; when the PUSCH and SRS transmission simultaneously exist in the carrier 2, carrying out rate matching transmission on the PUSCH based on the first SC-FDMA symbol reserved for SRS transmission, and transmitting the SRS in the first SC-FDMA symbol; only PUSCH transmission exists on the carrier 3, and the last SC-FDMA symbol is vacant, then the PUSCH is subjected to rate matching transmission based on the last SC-FDMA symbol vacant;

step 2: judging whether the sum of the target transmitting power of the SRS on the carrier 1 and the carrier 2 and the actual transmitting power of the PUSCH on the carrier 3 in the current subframe i exceeds the maximum transmitting power, if so, carrying out power reduction on the SRS on the carrier 1 and the carrier 2 in an equal proportion so as to ensure that the sum of the transmitting power of the SRS on the carrier 1 and the carrier 2 after the power reduction does not exceed the maximum transmitting power minus the actual transmitting power of the PUSCH on the carrier 3 and obtain the actual transmitting power of the SRS on the carrier 1 and the carrier 2; if not, determining the target transmission power of the SRS on the carrier 1 and the carrier 2 as the actual transmission power;

a base station side:

consistent with the understanding of the UE, in the current subframe i, the base station receives the PUCCH and the SRS by adopting a newly defined short PUCCH format on a carrier 1; performing rate de-matching on the carrier 2 based on the first SC-FDMA symbol to receive the PUSCH and the SRS; the PUSCH is received de-rate matched based on the last SC-FDMA symbol null on carrier 3.

It should be noted that, in the foregoing process, preferably, when it can be determined that, for one uplink carrier, no data transmission is performed on the first SC-FDMA symbol by the uplink carrier whose TA is greater than the carrier in the next adjacent uplink subframe of the current uplink subframe (that is, no uplink channel/signal transmission is performed on the uplink carrier whose TA is greater than the carrier in the next adjacent uplink subframe), the next K SC-FDMA symbols may not be left empty in the current uplink subframe, that is, K is 0.

Scene five, UE has aggregated 3 carriers for uplink transmission, the TA groups of which are different, TA of carrier 2 leads carrier 1 by about 0.5 SC-FDMA symbols, and on carrier 3, PRACH (bearer format2 preamble sequence) is sent in uplink subframe i-1, lasting 2 subframes, so carriers 1 and 2 have partial or all SC-FDMA symbols overlapping with PRACH in subframe i-1, subframe i and subframe i +1, at this time:

the UE side:

mode A: because carriers 1 and 2 have partial or all SC-FDMA symbols overlapping with the PRACH in the subframe i-1, the subframe i, and the subframe i +1, the UE determines that no uplink information is transmitted in these subframes of the carriers 1 and 2, and transmits the PRACH only on the carrier where the PRACH is located, as shown in fig. 13A; if there is PUCCH and/or PUSCH transmitted in these subframes (e.g. PUSCH is incorrectly scheduled by the base station, or SRS/CSI transmission is configured/triggered, or PDSCH is scheduled for ACK/NACK feedback), the UE considers that the scheduling is wrong and does not transmit these channels.

Mode B: since carrier 1 and carrier 2 overlap with PRACH in subframe i +1 and only the previous part of SC-FDMA symbols, the UE may transmit uplink channel/signal on SC-FDMA symbols that do not overlap with PRACH in subframe i +1 on carriers 1 and 2, as shown in fig. 13B, and SRS is transmitted on the last SC-FDMA symbol in subframe i +1 of carrier 2 (i.e., the base station configures the subframe as an SRS subframe).

Mode C: supporting the simultaneous transmission of the PRACH and other uplink channels/signals, wherein the UE receives a high-level signaling or a PDCCH signaling sent by a base station or is pre-appointed by the UE and the base station, and determines that the first SC-FDMA symbol in a subframe on the carrier 2 is vacant and does not transmit any uplink information so as to avoid the simultaneous transmission of the uplink channel/signal in the previous uplink subframe on the carrier 1 and the uplink channel/signal in the current uplink subframe on the carrier 2; since the TA of carrier 1 is smaller than that of carrier 2, and the first SC-FDMA symbol of the uplink channel/signal on carrier 1 is not transmitted simultaneously with the last SC-FDMA symbol in the previous adjacent uplink subframe on carrier 2, there is no need to null any SC-FDMA symbol for the uplink channel/signal on carrier 1 to ensure the transmission efficiency thereof, as shown in fig. 13C;

the specific transmission mode is as follows: on the carrier 1, the transmission modes of PUCCH, PUSCH and SRS in Rel-8/910 can be reused: in a non-SRS subframe, adopting normal PUCCH format or PUSCH to carry out rate matching based on all symbol transmission data; in an SRS subframe, when ACK/NACK and SRS simultaneous transmission are supported, short PUCCH format is adopted, SRS can be transmitted at the last SC-FDMA symbol, otherwise, SRS is discarded, normal PUCCH format transmission is adopted, or PUSCH is reserved for SRS to carry out rate matching based on the last SC-FDMA symbol, and SRS can be transmitted at the last SC-FDMA symbol. On carrier 2, in a non-SRS subframe, PUSCH carries out rate matching based on a first SC-FDMA null; in an SRS subframe, PUSCH is reserved for SRS to carry out rate matching based on the first SC-FDMA null and the last SC-FDMA symbol, and the SRS can be transmitted at the last SC-FDMA;

in addition, the UE also needs to calculate a target transmission power of the uplink channel on each carrier according to the power control parameter and the power control formula on each carrier, and performs power reduction according to the following steps:

for subframe i:

judging whether the sum of the target transmitting power of the PUSCHs on the carriers 1 and 2 in the subframe i exceeds the maximum transmitting power minus the transmitting power of the PRACH, if so, carrying out equal-proportion power reduction on the PUSCHs on the carriers 1 and 2 according to the priority of the channel so as to meet the requirement, and after the power is reduced, obtaining the actual transmitting power of the PUSCHs on the carriers 1 and 2, wherein the sum of the transmitting power of the PUSCHs on the carriers 1 and 2 in the subframe i does not exceed the maximum transmitting power minus the transmitting power of the PRACH; otherwise, taking the target transmission power of the PUSCH on the carrier waves 1 and 2 as the actual transmission power;

for subframe i + 1:

judging whether the sum of the target transmitting power of the PUCCH on the carrier 1 and the PUSCH on the carrier 2 in the subframe i +1 exceeds the maximum transmitting power minus the transmitting power of the PRACH, if so, preferentially ensuring that the transmitting power of the PUCCH is not reduced according to the priority of a channel, and reducing the power of the PUSCH on the carrier 2 to meet the requirement that the sum of the transmitting power of the PUCCH on the carrier 1 and the transmitting power of the PUSCH on the carrier 2 in the subframe i +1 does not exceed the maximum transmitting power minus the transmitting power of the PRACH after the power is reduced, and if the power of the PUSCH is reduced to be 0, the total transmitting power of the UE also exceeds the maximum transmitting power, further reducing the transmitting power of the PUCCH, so that the actual transmitting power; otherwise, the target transmission power of the PUCCH on the carrier 1 and the PUSCH on the carrier 2 is taken as the actual transmission power.

A base station side:

mode A: because partial or all SC-FDMA symbols are overlapped with the PRACH in the subframe i-1, the subframe i and the subframe i +1, the base station judges that no uplink information transmission exists in the subframes, no uplink information is received and only the PRACH is received on a carrier where the PRACH is located by scheduling or pre-configuring the SC-FDMA symbols reserved by the UE to be the maximum SC-FDMA symbol number in one subframe or pre-agreeing with the UE that other uplink channels/signals are not supported to be transmitted simultaneously with the PRACH;

mode B: since carrier 1 and carrier 2 overlap with PRACH in subframe i +1 and only the previous part of SC-FDMA symbols, the base station can receive uplink channel/signal on SC-FDMA symbols that do not overlap with PRACH in subframe i +1 on carriers 1 and 2, as shown in fig. 13B, and receive SRS on the last SC-FDMA symbol in subframe i +1 of carrier 2 (preferably, the base station should preferentially configure this subframe as SRS subframe).

Mode C: the PRACH and other uplink channels/signals are supported to be transmitted simultaneously, a high-level signaling or a PDCCH signaling sent by a base station to the UE or the UE is appointed in advance, and no uplink information is transmitted in the first SC-FDMA symbol in a subframe on a carrier 2 in an empty mode so as to avoid the simultaneous transmission of the uplink channel/signal in the previous uplink subframe on the carrier 1 and the uplink channel/signal in the current uplink subframe on the carrier 2; since the TA of carrier 1 is smaller than that of carrier 2, and the first SC-FDMA symbol of the uplink channel/signal on carrier 1 is not transmitted simultaneously with the last SC-FDMA symbol in the previous adjacent uplink subframe on carrier 2, there is no need to null any SC-FDMA symbol for the uplink channel/signal on carrier 1 to ensure the transmission efficiency thereof, as shown in fig. 13C;

the specific receiving method is as follows: the base station receives uplink information in the subframes i and i +1 of the carriers 1 and 2, and the transmission modes of PUCCH, PUSCH and SRS in Rel-8/910 can be reused on the carrier 1: in a non-SRS subframe, performing rate de-matching by adopting normal PUCCH format or PUSCH based on all symbol transmission data; in the SRS subframe, when ACK/NACK and SRS simultaneous transmission are supported, short PUCCH format is adopted, the SRS can be received at the last SC-FDMA symbol, otherwise, the SRS is not received, normal PUCCH format transmission is adopted, or PUSCH is reserved for the SRS to carry out de-rate matching based on the last SC-FDMA symbol, and the SRS can be received at the last SC-FDMA symbol. On carrier 2, in a non-SRS subframe, PUSCH performs de-rate matching based on a first SC-FDMA null; in the SRS subframe, PUSCH is reserved for SRS de-rate matching based on the first SC-FDMA null and the last SC-FDMA symbol, and SRS can be received at the last SC-FDMA.

It should be noted that, in the foregoing process, preferably, when it can be determined that, for one uplink carrier, an uplink carrier whose TA in a next adjacent uplink subframe of the current uplink subframe is smaller than that of the carrier has no data transmission on the last SC-FDMA symbol, the first K SC-FDMA symbols in the current uplink subframe may not be nulled, that is, K is 0, that is, in subframe i, and for carrier 2, the first SC-FDMA symbol may not be nulled.

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

1. A method for transmitting uplink information, the method comprising:

the user equipment maps the uplink information to be transmitted to other SC-FDMA symbols used for transmitting the uplink information except the K SC-FDMA symbols in the current uplink subframe by an uplink carrier for transmission;

wherein the determining, by the user equipment, the K SC-FDMA symbols comprises:

the user equipment determines the K SC-FDMA symbols according to the configuration of a high-level signaling or a Physical Downlink Control Channel (PDCCH) signaling; or

The user equipment determines the K SC-FDMA symbols according to the prearrangement with the network side equipment; or

The user equipment judges whether reserved SC-FDMA symbols exist in a current uplink subframe according to a specific bit field in PDCCH signaling, determines K SC-FDMA symbols pre-configured by a high-level signaling or the PDCCH signaling as the K SC-FDMA symbols when the reserved SC-FDMA symbols exist, and determines the non-reserved SC-FDMA symbols in the current uplink subframe when the reserved SC-FDMA symbols do not exist, wherein the PDCCH is a PDCCH in a downlink subframe corresponding to ACK/NACK feedback in the current uplink subframe and/or a PDCCH corresponding to a Physical Uplink Shared Channel (PUSCH) in the current uplink subframe.

2. The method of claim 1, wherein the higher layer signaling is Radio Resource Control (RRC) signaling or Medium Access Control (MAC) signaling.

3. The method of claim 1, wherein corresponding K of different uplink carriers in a same uplink subframe is the same or different;

4. The method of claim 1, wherein the K SC-FDMA symbols are the first K SC-FDMA symbols in a current uplink subframe; or

The K SC-FDMA symbols are the first K1 SC-FDMA symbols and the last K2 SC-FDMA symbols in the current uplink subframe, where K1+ K2= K.

5. The method of claim 4, wherein a Sounding Reference Signal (SRS) is transmitted at a last SC-FDMA symbol in a current uplink subframe, and the K SC-FDMA symbols are first K SC-FDMA symbols in the current uplink subframe; or

And SRS is transmitted at the first SC-FDMA symbol in the current uplink subframe, and the K SC-FDMA symbols are the last K SC-FDMA symbols in the current uplink subframe.

6. The method of claim 4, wherein the UE determines the K SC-FDMA symbols if the K SC-FDMA symbols are the first K SC-FDMA symbols in a current uplink subframe, further comprising:

the user equipment determines that the K SC-FDMA symbols are reserved in an uplink subframe only for uplink carriers except the uplink carrier with the minimum uplink TA, or the user equipment determines that the SC-FDMA symbols do not need to be reserved in an uplink subframe for the uplink carrier with the minimum uplink TA.

7. The method of claim 4, wherein the UE determines the K SC-FDMA symbols if the K SC-FDMA symbols are the first K SC-FDMA symbols in a current uplink subframe, further comprising:

for an uplink carrier, if uplink TA is smaller than other uplink carriers of the uplink carrier and no uplink information is transmitted on the last K SC-FDMA symbols in the previous adjacent uplink subframe of the current uplink subframe, the user equipment determines that the first K SC-FDMA symbols are not reserved for the uplink carrier in the current uplink subframe.

8. The method of claim 4, wherein the user equipment determines the K SC-FDMA symbols if the K SC-FDMA symbols are the last K SC-FDMA symbols in the current uplink subframe, further comprising:

the user equipment determines that the K SC-FDMA symbols are reserved in an uplink subframe only for uplink carriers except the uplink carrier with the maximum uplink TA, or the user equipment determines that the SC-FDMA symbols do not need to be reserved in an uplink subframe for the uplink carrier with the maximum uplink TA.

9. The method of claim 4, wherein the user equipment determines the K SC-FDMA symbols if the K SC-FDMA symbols are the last K SC-FDMA symbols in the current uplink subframe, further comprising:

for an uplink carrier, if uplink information is not transmitted on the first K SC-FDMA symbols in the next adjacent uplink subframe of the current uplink subframe by other uplink carriers of which the uplink TA is greater than the uplink carrier, the user equipment determines that the last K SC-FDMA symbols are not reserved for the uplink carrier in the current uplink subframe.

10. The method according to any one of claims 1 to 9, wherein the mapping, by the ue, the uplink information to be transmitted to the uplink carrier on other SC-FDMA symbols used for transmitting uplink information except the K SC-FDMA symbols in the current uplink subframe for transmission comprises:

for PUCCH transmission, the user equipment transmits the uplink information by adopting a transmission format of carrying out time domain orthogonal spread spectrum on the basis of SC-FDMA symbols for transmitting the uplink information except the K SC-FDMA symbols in one uplink subframe; or

And for PUSCH transmission, the user equipment transmits the uplink information by adopting rate matching based on other SC-FDMA symbols used for transmitting the uplink information except the K SC-FDMA symbols in one uplink subframe.

11. The method of claim 10, wherein if K =1 and the K SC-FDMA symbols are the last SC-FDMA symbol in the current uplink subframe, the ue maps uplink information to be transmitted to uplink carriers for transmission on SC-FDMA symbols other than the K SC-FDMA symbols in the current uplink subframe used for transmitting uplink information, further comprising:

for PUCCH transmission, the user equipment transmits the uplink information by adopting a shortened PUCCH format short PUCCH format; or

For PUSCH transmission, the user equipment reserves the uplink information for transmitting SRS to perform rate matching transmission based on the last SC-FDMA symbol.

12. The method of any one of claims 1 to 9, wherein if all or part of SC-FDMA symbols in the current uplink subframe overlap with a physical random access channel, PRACH, that is continuously transmitted in at least one uplink subframe, the method further comprises:

the user equipment determines that no uplink information is transmitted on the uplink carrier except the uplink carrier where the PRACH is located in the current uplink subframe; or

For uplink carriers except the uplink carrier where the PRACH is located, if an uplink channel/signal after the K SC-FDMA symbols are reserved on the uplink carrier in the current uplink subframe is still overlapped with the PRACH on all or part of SC-FDMA symbols, the user equipment determines that the uplink carrier does not transmit any uplink information in the current uplink subframe; or

wherein the uplink channel/signal at least comprises one or more of PUCCH, PUSCH and SRS.

13. The method of any of claims 1 to 9, further comprising:

if SRS transmission exists in the last SC-FDMA symbol in the current uplink subframe or the current uplink subframe is an SRS transmission subframe and SRS transmission exists in the last SC-FDMA symbol in the uplink subframe, the user equipment determines that uplink channels of uplink carriers except the uplink carrier with the maximum uplink TA in the current uplink subframe are further reserved for 2 SC-FDMA symbols to not transmit uplink information; or

If SRS transmission exists in a first SC-FDMA symbol in a current uplink subframe or the current uplink subframe is an SRS transmission subframe and SRS transmission is carried out in the first SC-FDMA symbol in the uplink subframe, the user equipment determines that uplink carriers except the uplink carrier with the minimum uplink TA in an uplink channel in the current uplink subframe further reserve the first 2 SC-FDMA symbols for not transmitting uplink information;

wherein the uplink channel at least comprises one or more of PUCCH, PUSCH and PRACH.

14. The method of any of claims 1 to 9, further comprising:

the user equipment only has SRS transmission of uplink carriers with the same uplink TA in the same uplink subframe.

15. A method for receiving uplink information, the method comprising:

the network side equipment receives uplink information transmitted and sent by user equipment with a plurality of uplink TAs through other SC-FDMA symbols except the SC-FDMA symbol which does not transmit the uplink information in a current uplink subframe by an uplink carrier;

after the network side device determines K SC-FDMA symbols, the method further includes:

the network side equipment configures the K SC-FDMA symbols for the user equipment through high-level signaling or PDCCH signaling; or

The network side equipment informs the K SC-FDMA symbols in a mode predetermined with the user equipment; or

The network side equipment informs the user equipment of the K SC-FDMA symbols in advance through high-level signaling or PDCCH signaling, and configures whether the user equipment reserves the K SC-FDMA symbols in a current uplink subframe or not through a specific bit field in the PDCCH signaling, wherein the PDCCH is a PDCCH in a downlink subframe corresponding to ACK/NACK feedback in the current uplink subframe and/or is a PDCCH corresponding to a PUSCH in the current uplink subframe.

16. The method of claim 15, wherein the higher layer signaling is RRC signaling or MAC signaling.

17. The method of claim 15, wherein corresponding K of different uplink carriers in a same uplink subframe is the same or different;

18. The method of claim 15, wherein the K SC-FDMA symbols are the first K SC-FDMA symbols in a current uplink subframe; or

19. The method of claim 18, wherein SRS is transmitted at a last SC-FDMA symbol in a current uplink subframe and the K SC-FDMA symbols are the first K SC-FDMA symbols in the current uplink subframe; or

20. The method of claim 18, wherein if the K SC-FDMA symbols are the first K SC-FDMA symbols in the current uplink subframe, the network-side device determines K SC-FDMA symbols, and further comprising:

the network side device determines that the K SC-FDMA symbols are reserved in an uplink subframe only for uplink carriers except the uplink carrier with the minimum uplink TA, or the network side device determines that the SC-FDMA symbols do not need to be reserved in an uplink subframe for the uplink carrier with the minimum uplink TA.

21. The method of claim 18, wherein if the K SC-FDMA symbols are the first K SC-FDMA symbols in the current uplink subframe, the network-side device determines K SC-FDMA symbols, and further comprising:

for an uplink carrier, if uplink TA is smaller than other uplink carriers of the uplink carrier and no uplink information is transmitted on the last K SC-FDMA symbols in the previous adjacent uplink subframe of the current uplink subframe, the network side equipment determines that the first K SC-FDMA symbols are not reserved for the uplink carrier in the current uplink subframe.

22. The method of claim 18, wherein if the K SC-FDMA symbols are the last K SC-FDMA symbols in the current uplink subframe, the network-side device determines the K SC-FDMA symbols, and further comprising:

the network side device determines that the K SC-FDMA symbols are reserved in an uplink subframe only for uplink carriers except the uplink carrier with the maximum uplink TA, or the network side device determines that the SC-FDMA symbols do not need to be reserved in an uplink subframe for the uplink carrier with the maximum uplink TA.

23. The method of claim 18, wherein if the K SC-FDMA symbols are the last K SC-FDMA symbols in the current uplink subframe, the network-side device determines the K SC-FDMA symbols, and further comprising:

for an uplink carrier, if uplink information is not transmitted on the first K SC-FDMA symbols in the next adjacent uplink subframe of the current uplink subframe by other uplink carriers of which the uplink TA is greater than the uplink carrier, the network side device determines that the last K SC-FDMA symbols are not reserved for the uplink carrier in the current uplink subframe.

24. The method according to any one of claims 15 to 23, wherein the receiving, by the network side device, the uplink information transmitted by the user equipment having multiple uplink TAs through other SC-FDMA symbols in the current uplink subframe except SC-FDMA symbols not transmitting uplink information by using an uplink carrier comprises:

for PUCCH transmission, the network side equipment receives uplink information by adopting a transmission format for carrying out time domain orthogonal de-spreading on the basis of SC-FDMA symbols for transmitting the uplink information except the K SC-FDMA symbols in one uplink subframe; or

For PUSCH transmission, the network side equipment receives the uplink information by performing rate de-matching based on the SC-FDMA symbols for transmitting the uplink information except the K SC-FDMA symbols in one uplink subframe.

25. The method of claim 24, wherein if K =1 and the K SC-FDMA symbols are the last SC-FDMA symbol in the current uplink subframe, the network-side device receives uplink information transmitted by a user equipment with a plurality of uplink TAs through other SC-FDMA symbols in the current uplink subframe except the SC-FDMA symbol not transmitting the uplink information via an uplink carrier, further comprising:

for PUCCH transmission, the network side equipment receives uplink information by using short PUCCH format; or

26. The method of any one of claims 15 to 23, wherein if there is an overlap between all or part of SC-FDMA symbols and PRACH that is continuously transmitted in at least one uplink subframe, the method further comprises:

For uplink carriers except the uplink carrier where the PRACH is located, if an uplink channel/signal after the K SC-FDMA symbols are reserved on the uplink carrier in the current uplink subframe is still overlapped with the PRACH on all or part of SC-FDMA symbols, the network side equipment determines that the uplink carrier does not receive any uplink data in the current uplink subframe; or

27. The method of any of claims 15 to 23, further comprising:

if SRS transmission exists in the last SC-FDMA symbol in the current uplink subframe or the current uplink subframe is an SRS transmission subframe and SRS transmission exists in the last SC-FDMA symbol in the uplink subframe, the network side equipment determines that uplink channels of uplink carriers except the uplink carrier with the maximum uplink TA in the current uplink subframe are further reserved for 2 SC-FDMA symbols to not transmit uplink information; or

If SRS transmission exists in a first SC-FDMA symbol in a current uplink subframe or the current uplink subframe is an SRS transmission subframe and the SRS is transmitted in the first SC-FDMA symbol in the uplink subframe, the network side equipment determines that uplink channels of uplink carriers in the current uplink subframe except the uplink carrier with the minimum uplink TA further reserve the first 2 SC-FDMA symbols for not transmitting uplink information;

28. The method of any of claims 15 to 23, further comprising:

and the network side equipment only receives the SRS of the uplink carrier wave with the same uplink TA in the same uplink subframe.

29. A user equipment for transmitting uplink information, the user equipment comprising:

the transmission module is used for mapping the uplink information to be transmitted to uplink carriers to transmit on other SC-FDMA symbols used for transmitting the uplink information except the K SC-FDMA symbols in the current uplink subframe;

wherein the first determining module is specifically configured to:

determining the K SC-FDMA symbols according to the configuration of a high-level signaling or a PDCCH signaling; or

Determining the K SC-FDMA symbols according to the pre-agreement with the network side equipment; or

Judging whether a reserved SC-FDMA symbol exists in a current uplink subframe according to a specific bit field in a PDCCH signaling, determining K SC-FDMA symbols pre-configured in a high-layer signaling or the PDCCH signaling as the K SC-FDMA symbols when the reserved SC-FDMA symbol exists, and determining the non-reserved SC-FDMA symbol in the current uplink subframe when the reserved SC-FDMA symbol does not exist, wherein the PDCCH is a PDCCH in a downlink subframe corresponding to ACK/NACK feedback in the current uplink subframe and/or a PDCCH corresponding to a PUSCH in the current uplink subframe;

wherein the higher layer signaling is RRC signaling or MAC signaling.

30. The user equipment of claim 29, wherein the K SC-FDMA symbols determined by the first determining module are the first K SC-FDMA symbols in a current uplink subframe; or

The K SC-FDMA symbols determined by the first determining module are the last K SC-FDMA symbols in the current uplink subframe; or

The K SC-FDMA symbols determined by the first determining module are the first K1 SC-FDMA symbols and the last K2 SC-FDMA symbols in the current uplink subframe, wherein K1+ K2= K.

31. The user device of claim 30, wherein the first determining module is further to:

determining the last SC-FDMA symbol transmission of an SRS in a current uplink subframe, wherein the K SC-FDMA symbols are the first K SC-FDMA symbols in the current uplink subframe; or

And determining the first SC-FDMA symbol transmission of the SRS in the current uplink subframe, wherein the K SC-FDMA symbols are the last K SC-FDMA symbols in the current uplink subframe.

32. The user equipment of claim 30, wherein if the K SC-FDMA symbols are the first K SC-FDMA symbols in the current uplink subframe, the first determining module is further configured to:

determining that the K SC-FDMA symbols are reserved in one uplink subframe only for uplink carriers other than the uplink carrier with the minimum uplink TA, or determining that the SC-FDMA symbols are not required to be reserved in one uplink subframe for the uplink carrier with the minimum uplink TA.

33. The user equipment of claim 30, wherein if the K SC-FDMA symbols are the first K SC-FDMA symbols in the current uplink subframe, the first determining module is further configured to:

for an uplink carrier, if uplink information is not transmitted on the last K SC-FDMA symbols in the previous adjacent uplink subframe of the current uplink subframe by other uplink carriers of which the uplink TA is smaller than the uplink carrier, determining that the first K SC-FDMA symbols are not reserved for the uplink carrier in the current uplink subframe.

34. The user equipment of claim 30, wherein if the K SC-FDMA symbols are the last K SC-FDMA symbols in the current uplink subframe, the first determining module is further configured to:

determining that the K SC-FDMA symbols are reserved in an uplink subframe only for uplink carriers other than the uplink carrier with the maximum uplink TA, or determining that the SC-FDMA symbols do not need to be reserved in an uplink subframe for the uplink carrier with the maximum uplink TA.

35. The user equipment of claim 30, wherein if the K SC-FDMA symbols are the last K SC-FDMA symbols in the current uplink subframe, the first determining module is further configured to:

for an uplink carrier, if other uplink carriers of which uplink TA is greater than the uplink carrier do not transmit uplink information on the first K SC-FDMA symbols in the next adjacent uplink subframe of the current uplink subframe, determining that the last K SC-FDMA symbols are not reserved for the uplink carrier in the current uplink subframe.

36. The UE of any one of claims 29 to 35, wherein the transmission module is specifically configured to:

for PUCCH transmission, transmitting the uplink information by adopting a transmission format of performing time domain orthogonal spread spectrum based on SC-FDMA symbols for transmitting the uplink information except the K SC-FDMA symbols in one uplink subframe; or

And for PUSCH transmission, performing rate matching on the SC-FDMA symbols used for transmitting the uplink information except the K SC-FDMA symbols in one uplink subframe to transmit the uplink information.

37. The user equipment of claim 36, wherein if K =1 and the K SC-FDMA symbols are the last SC-FDMA symbol in the current uplink subframe, the transmitting module is further configured to:

for PUCCH transmission, transmitting the uplink information by using a short PUCCH format; or

And for PUSCH transmission, reserving the uplink information for SRS transmission based on the last SC-FDMA symbol for rate matching transmission.

38. The UE of any one of claims 29 to 35, wherein if all or a portion of SC-FDMA symbols in a current uplink subframe overlap with a PRACH for continuous transmission in at least one uplink subframe, the first determining module is further configured to:

determining that no uplink information is transmitted on the uplink carrier except the uplink carrier where the PRACH is located in the current uplink subframe; or

For uplink carriers except the uplink carrier where the PRACH is located, if an uplink channel/signal after the K SC-FDMA symbols are reserved on the uplink carrier in the current uplink subframe and still overlaps with the PRACH on all or part of SC-FDMA symbols, determining that the uplink carrier does not transmit any uplink information in the current uplink subframe; or

Performing power control on an uplink channel/signal in the current uplink subframe based on the transmitting power of the PRACH, and transmitting the uplink channel/signal in the current uplink subframe according to the transmitting power after the power control;

39. The user equipment of any of claims 29-35, wherein the first determining module is further configured to:

if SRS transmission exists in the last SC-FDMA symbol in the current uplink subframe or the current uplink subframe is an SRS transmission subframe and SRS transmission exists in the last SC-FDMA symbol in the uplink subframe, determining that 2 SC-FDMA symbols do not transmit uplink information after uplink channels of uplink carriers in the current uplink subframe except the uplink carrier with the maximum uplink TA are further reserved;

if SRS transmission exists in a first SC-FDMA symbol in a current uplink subframe or the current uplink subframe is an SRS transmission subframe and SRS transmission is carried out in the first SC-FDMA symbol in the uplink subframe, determining that uplink carriers except the uplink carrier with the minimum uplink TA further reserve the first 2 SC-FDMA symbols in an uplink channel of the current uplink subframe for not transmitting uplink information;

40. The user equipment of any of claims 29-35, wherein the transmission module is further configured to:

and only transmitting the SRS of the uplink carrier wave with the same uplink TA in the same uplink subframe.

41. A network side device for receiving uplink information, the network side device comprising:

the receiving module is used for receiving uplink information transmitted and sent by user equipment with a plurality of uplink TAs through other SC-FDMA symbols except the SC-FDMA symbol which does not transmit the uplink information in the current uplink subframe by an uplink carrier;

wherein the second determination module is further to:

configuring the K SC-FDMA symbols for the user equipment through high-layer signaling or PDCCH signaling; or

Notifying the K SC-FDMA symbols in a mode predetermined with the user equipment; or

Notifying K SC-FDMA symbols to the user equipment in advance through high-level signaling or PDCCH signaling, and configuring whether the K SC-FDMA symbols are reserved in a current uplink subframe by the user equipment through a specific bit field in the PDCCH signaling, wherein the PDCCH is a PDCCH in a downlink subframe corresponding to ACK/NACK feedback in the current uplink subframe and/or is a PDCCH corresponding to a PUSCH in the current uplink subframe;

wherein the higher layer signaling is RRC signaling or MAC signaling.

42. The network-side device of claim 41, wherein the K SC-FDMA symbols determined by the second determining module are the first K SC-FDMA symbols in a current uplink subframe; or

The K SC-FDMA symbols determined by the second determining module are the last K SC-FDMA symbols in the current uplink subframe; or

The K SC-FDMA symbols determined by the second determining module are the first K1 SC-FDMA symbols and the last K2 SC-FDMA symbols in the current uplink subframe, wherein K1+ K2= K.

43. The network-side device of claim 42, wherein the second determining module is specifically configured to: determining the last SC-FDMA symbol transmission of an SRS in a current uplink subframe, wherein the K SC-FDMA symbols are the first K SC-FDMA symbols in the current uplink subframe; or

44. The network-side device of claim 42, wherein if the K SC-FDMA symbols are the first K SC-FDMA symbols in the current uplink subframe, the second determining module is specifically configured to:

45. The network-side device of claim 42, wherein if the K SC-FDMA symbols are the first K SC-FDMA symbols in the current uplink subframe, the second determining module is specifically configured to:

46. The network-side device of claim 42, wherein if the K SC-FDMA symbols are the last K SC-FDMA symbols in the current uplink subframe, the second determining module is specifically configured to:

47. The network-side device of claim 42, wherein if the K SC-FDMA symbols are the last K SC-FDMA symbols in the current uplink subframe, the second determining module is specifically configured to:

48. The network-side device of any one of claims 41 to 47, wherein the receiving module is specifically configured to:

for PUCCH transmission, uplink information is received by adopting a transmission format for carrying out time domain orthogonal de-spreading on the basis of SC-FDMA symbols for transmitting the uplink information except the K SC-FDMA symbols in one uplink subframe; or

And for PUSCH transmission, performing rate de-matching on the SC-FDMA symbols used for transmitting the uplink information except the K SC-FDMA symbols in one uplink subframe to receive the uplink information.

49. The network-side device of claim 48, wherein if K =1 and the K SC-FDMA symbols are the last SC-FDMA symbol in the current uplink subframe, the receiving module is further configured to:

for PUCCH transmission, adopting a short PUCCH format to receive uplink information; or

For PUSCH transmission, uplink information is received based on the last SC-FDMA symbol reserved for SRS transmission for de-rate matching.

50. The network side device of any one of claims 41 to 47, wherein if there is an overlap between an uplink channel/signal in a current uplink subframe and a PRACH (physical random Access channel) continuously transmitted in at least one uplink subframe in all or part of SC-FDMA symbols, the second determining module is further configured to:

For uplink carriers except the uplink carrier where the PRACH is located, if an uplink channel/signal after the K SC-FDMA symbols are reserved on the uplink carrier in the current uplink subframe and still overlaps with the PRACH on all or part of SC-FDMA symbols, determining that the uplink carrier does not receive any uplink data in the current uplink subframe; or

Determining that each uplink carrier in the current uplink subframe receives uplink information;

51. The network-side device of any one of claims 41-47, wherein the second determining module is further configured to:

if SRS transmission exists in the last SC-FDMA symbol in the current uplink subframe or the current uplink subframe is an SRS transmission subframe and SRS transmission exists in the last SC-FDMA symbol in the uplink subframe, determining that 2 SC-FDMA symbols do not transmit uplink information after uplink channels of uplink carriers in the current uplink subframe except the uplink carrier with the maximum uplink TA are further reserved; or

52. The network-side device of any one of claims 41-47, wherein the second determining module is further configured to:

and only receiving the SRS of the uplink carrier wave with the same uplink TA in the same uplink subframe.

53. A system for transmitting uplink information, the system comprising:

the network side equipment is used for determining that K SC-FDMA symbols are reserved in the current uplink subframe by an uplink carrier wave to not transmit uplink information, and receiving the uplink information transmitted by the user equipment with a plurality of uplink TAs through other SC-FDMA symbols except the SC-FDMA symbols which do not transmit the uplink information in the current uplink subframe by the uplink carrier wave;

the user equipment determines the K SC-FDMA symbols according to the configuration of a high-level signaling or a Physical Downlink Control Channel (PDCCH) signaling; or the user equipment determines the K SC-FDMA symbols according to the pre-agreement with the network side equipment; or the user equipment judges whether a reserved SC-FDMA symbol exists in a current uplink subframe according to a specific bit field in a PDCCH signaling, determines K SC-FDMA symbols pre-configured in a high-layer signaling or the PDCCH signaling as the K SC-FDMA symbols when the reserved SC-FDMA symbols exist, and determines the SC-FDMA symbol which is not reserved in the current uplink subframe when the reserved SC-FDMA symbol does not exist, wherein the PDCCH is a PDCCH in a downlink subframe which corresponds to positive Acknowledgement (ACK)/Negative Acknowledgement (NACK) feedback in the current uplink subframe and/or is a PDCCH which corresponds to a Physical Uplink Shared Channel (PUSCH) in the current uplink subframe.