CN101465720A - Method and device for sending upward HARQ feedback information - Google Patents

Abstract

The invention discloses a method of sending uplink hybrid automatic retransmission request (HARQ) feedback information; the method includes that: a terminal and a base station determine PHICH resource according to the index of downlink component carrier of physical hybrid retransmission indication channel (PHICH), PHICH group number and the index of orthogonal sequence in PHICH group; the base station transmits uplink HARQ feedback information based on determined PHICH resource. The invention also discloses a device for transmitting uplink HARQ feedback information and solves the transmission problem of uplink HARQ feedback information in advanced long-term evolution system (LTE-Advanced), and ensures LTE-Advanced terminal to operate normally in spectrum aggregation mode and enables the LET-Advanced to be compatible with LTE Release-8, and facilitates improving the scheduling flexibility and throughput of system.

Description

Method and device for sending uplink HARQ feedback information

Technical Field

The present invention relates to a transmission technology of uplink hybrid automatic repeat request (HARQ) feedback information in wireless communication, and in particular, to a method and an apparatus for transmitting uplink HARQ feedback information.

Background

A radio frame (radio frame) in a Long Term Evolution (LTE) system includes frame structures of a Frequency Division Duplex (FDD) mode and a Time Division Duplex (TDD) mode. In the frame structure of the FDD mode, as shown in fig. 1, a 10 millisecond (ms) radio frame is composed of twenty slots (slots) with the length of 0.5ms and the number of 0-19, and the slots 2i and 2i +1 constitute a subframe (subframe) i with the length of 1 ms. In TDD mode, as shown in fig. 2, a 10ms radio frame is composed of two half-frames (half frames) with a length of 5ms, one half-frame includes 5 subframes with a length of 1ms, and subframe i is defined as 2 slots 2i and 2i +1 with a length of 0.5 ms. In both of the above frame structures, one slot contains 7 symbols for a standard Cyclic Prefix (Normal Cyclic Prefix); for an Extended Cyclic Prefix (Extended Cyclic Prefix), one slot contains 6 symbols.

Several physical channels are defined in the LTE system as follows: a Physical Broadcast Channel (PBCH), a Physical downlink control format Indicator Channel (PCFICH), a Physical Downlink Control Channel (PDCCH), a Physical Uplink Shared Channel (PUSCH), and a Physical Hybrid retransmission Indicator Channel (PHICH).

Wherein PBCH carriesThe information of (2) includes a frame number of the system, a downlink bandwidth of the system, a period of the PHICH, and a parameter N for determining the number of PHICH channel groups_g∈{1/6，1/2，1，2}。

The information carried by the PCFICH is used to indicate the number of Orthogonal Frequency Division Multiplexing (OFDM) symbols for transmitting the PDCCH in one subframe, the channel is transmitted on the first OFDM symbol of the subframe, and the Frequency position is determined by the system downlink bandwidth and the cell Identity (ID).

The PDCCH is used to carry uplink and downlink scheduling information and uplink power control information. Formats (formats) of Downlink Control Information (DCI) are classified into the following: DCIformat 0, DCI format 1A, DCI format 1B, DCI format 1C, DCIformat 1D, DCI format 2A, DCI format 3, and DCI format 3A; the DCI format 0 is used for indicating the scheduling of the PUSCH; the DCI format 1, the DCI format 1A, the DCI format 1B, the DCI format 1C and the DCI format 1D are used for different transmission modes of a PDSCH of a single transmission block; the DCI format 2 and the DCI format 2A are used for different transmission modes of space division multiplexing; the DCIformat 3 and the DCI format 3A are used for transmission of a Physical Uplink Control Channel (PUCCH) and a power control command of the PUSCH.

The PUSCH is used to carry uplink transmission data. Control information such as resource allocation, modulation and coding scheme, and Cyclic shift (Cyclic shift) of Demodulation pilot (DMRS) related to the channel is set in DCI format 0 for Uplink grant (Uplink grant).

The PHICH is used to carry acknowledgement/negative-acknowledgement (ACK/NACK) feedback information of uplink transmission data. The number, duration (duration) of the PHICH channel groups is determined by a system message in PBCH of a downlink carrier where PHICH is located; the time-frequency position of the PHICH is determined by the number of PHICH channel groups, the duration, the antenna configuration of the cell PBCH, the cell ID, and the group number and the intra-group sequence index of the PHICH.

Number of PHICH groups for frame structure of FDD modeIs determined by the following formula:

wherein N is_gE {1/6, 1/2, 1, 2} is determined by the system message in PBCH of the downlink carrier (DL carrier) where PHICH is located;

group number for PHICH, from 0 to

Numbering;

is the bandwidth of the downlink carrier where the PHICH is located.

For the frame structure of TDD mode, the number of PHICH groups per subframe is

Wherein m is_iAs determined from table 1:

TABLE 1

PHICH resource combination

It is determined that,

is the group number of the PHICH,

is an index of the orthogonal sequence in the PHICH group.

LTE Release 8 (LTE Release-8) defines 6 bandwidths: 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz and 20 MHz. LTE-Advanced is an evolved version of LTE Release-8 that, in addition to meeting all relevant requirements of the third Generation Partnership Project (3 GPP) TR25.913, meets or exceeds the requirements of International Mobile telecommunications (IMT-Advanced) proposed by the International telecommunications Union Radio communication sector (ITU-R). The requirement of backward compatibility with LTE Release-8 means that a terminal of LTE Release-8 can work in an LTE-Advanced network, and the terminal of LTE-Advanced can also work in the LTE Release-8 network. In addition, LTE-Advanced should be able to operate with different size spectrum configurations, including wider spectrum configurations (e.g., 100MHz contiguous spectrum resources) than LTE Release-8, to achieve higher performance and target peak rates. In consideration of compatibility with LTE Release-8, for bandwidths larger than 20MHz, a spectrum aggregation (Carrier aggregation) manner is adopted, that is, two or more component carriers are aggregated to support a downlink transmission bandwidth larger than 20 MHz. The terminal may receive one or more component carriers simultaneously according to its capability, which specifically includes: LTE-Advanced terminals with reception capabilities over 20MHz are able to receive transmissions on multiple component carriers simultaneously, while LTE Release-8 terminals are able to receive transmissions on only one component carrier.

The pairing of the uplink and downlink component carriers refers to the corresponding relationship between the uplink and downlink component carriers in the FDD mode. The system information of the downlink component carrier includes frequency, bandwidth, Packet Random Access Channel (PRACH), PUSCH, PUCCH, measurement pilot (Sounding RS), Random Access Channel (RACH), and other uplink channels or signal related common parameters of the corresponding uplink component carrier.

Currently, in the LTE-Advanced standard, when a terminal is in a spectrum aggregation mode, that is, when multiple downlink component carriers coexist with multiple uplink component carriers, there is no corresponding description about a corresponding relationship of which downlink component carrier the feedback information (ACK/NACK) of an uplink component carrier Hybrid Automatic repeat Request (HARQ) is located in, which may cause that the feedback information of uplink data cannot be sent, thereby affecting the operation of the LTE-Advanced terminal in the spectrum aggregation mode.

Disclosure of Invention

In view of this, the present invention mainly aims to provide a method and an apparatus for transmitting uplink HARQ feedback information, so as to solve the problem of transmitting uplink HARQ feedback information in an LTE-Advanced system.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

the invention provides a method for sending uplink HARQ feedback information, which comprises the following steps:

the terminal and the base station indicate the index of the downlink component carrier where the PHICH is located according to the physical hybrid retransmission

Group number of PHICH

And index of orthogonal sequence in PHICH group

Determining PHICH resources;

and the base station transmits the uplink HARQ feedback information on the determined PHICH resource.

The above-mentionedAnd the indexes of the downlink component carriers where the latest uplink authorization information related to the transmission block carried by the corresponding physical uplink shared channel PUSCH is consistent.

And the index of the downlink component carrier where the uplink authorization information is located is consistent with the index of the downlink component carrier where the Physical Downlink Control Channel (PDCCH) bearing the uplink authorization information is located.

For a semi-persistent set PUSCH, if corresponding uplink authorization information exists in a latest subframe used for sending the uplink authorization information before the PUSCH, the index of a downlink component carrier of uplink HARQ feedback information related to the PUSCH is consistent with the index of a downlink component carrier where a PDCCH bearing the uplink authorization information is located; and if the subframe does not have corresponding uplink authorization information, the index of the downlink component carrier of the uplink HARQ feedback information related to the PUSCH is consistent with the index of the downlink component carrier where the latest semi-persistently set uplink authorization information is located.

The above-mentioned

The pairing relation of the uplink component carrier and the downlink component carrier is determined.

When the pairing relationship of the uplink component carrier and the downlink component carrier allocated to the terminal is that one downlink component carrier is paired with one uplink component carrier, the uplink HARQ feedback information of the PUSCH in the uplink component carrier is loaded

And determining the uplink component carrier wave index where the corresponding PUSCH is located according to the pairing relation of the uplink component carrier wave and the downlink component carrier wave.

When the pairing relationship of the uplink component carrier and the downlink component carrier allocated by the terminal is that a plurality of downlink component carriers are paired with one uplink component carrier, the uplink component carrier carries the uplink HARQ feedback information of the PUSCH in the uplink component carrier

Determining by the maximum or minimum index of a physical resource block PRB allocated in an uplink component carrier where the corresponding PUSCH is located; or determine

A maximum or minimum index of a plurality of downlink component carriers; or determine

Is a plurality ofA downlink component carrier index with the largest downlink broadband in downlink component carriers; or determine

A downlink component carrier index for a primary component carrier of a plurality of downlink component carriers.

When the pairing relationship of the uplink component carrier and the downlink component carrier allocated by the terminal is that a plurality of uplink component carriers are paired with one downlink component carrier, for each uplink component carrier, the uplink HARQ feedback information of the PUSCH in the uplink component carrier is loaded

And determining the uplink component carrier wave index where the corresponding PUSCH is located according to the pairing relation of the uplink component carrier wave and the downlink component carrier wave.

The above-mentioned

Andby an index of

The number of PHICH groups of the downlink component carrier, the cyclic shift amount of the demodulation pilot frequency defined in the uplink authorization related to the corresponding PUSCH, the lowest index of a Physical Resource Block (PRB) transmitted by the corresponding PUSCH, the spreading factor of the PHICH modulation, the subframe index where the PUSCH is located and one or more of the PHICH parameters specific to the uplink component carrier.

The invention also provides a device for sending the uplink HARQ feedback information, which comprises:

a resource determining module for determining the index of the downlink component carrier in which the PHICH is located

Group number of PHICH

And index of orthogonal sequence in PHICH group

Determining PHICH resources;

and the information sending module is used for sending the uplink HARQ feedback information according to the determined PHICH resource.

The method and the device for sending the uplink HARQ feedback information provided by the invention are characterized in that the index of the downlink component carrier where the PHICH is positioned is determined

Group number of PHICH

And index of orthogonal sequence in PHICH group

Determining PHICH resources; and the base station transmits the uplink HARQ feedback information on the determined PHICH resource. The method and the device solve the problem of sending the uplink HARQ feedback information in the LTE-Advanced system, ensure the normal work of the LTE-Advanced terminal in a spectrum aggregation mode, are favorable for the compatibility of the LTE-Advanced and LTE Release-8, and are favorable for improving the scheduling flexibility and the throughput of the LTE-Advanced system.

Drawings

Fig. 1 is a diagram illustrating a frame structure of an FDD mode in the prior art;

FIG. 2 is a diagram illustrating a frame structure of a TDD mode in the prior art;

fig. 3 is a flowchart of a method for transmitting uplink HARQ feedback information according to the present invention;

fig. 4 is a diagram illustrating a corresponding relationship between uplink and downlink component carriers according to a first embodiment of the present invention;

fig. 5 is a first schematic diagram illustrating a corresponding relationship between uplink and downlink component carriers according to a second embodiment of the present invention;

fig. 6 is a second schematic diagram illustrating a corresponding relationship between uplink and downlink component carriers according to a second embodiment of the present invention;

fig. 7 is a diagram illustrating a corresponding relationship between uplink and downlink component carriers according to a third embodiment of the present invention;

fig. 8 is a diagram illustrating a corresponding relationship between uplink and downlink component carriers according to a fourth embodiment of the present invention;

fig. 9 is a diagram illustrating a corresponding relationship between uplink and downlink component carriers according to a fifth embodiment of the present invention;

fig. 10 is a diagram illustrating a corresponding relationship between uplink and downlink component carriers according to a sixth embodiment of the present invention;

fig. 11 is a diagram illustrating a corresponding relationship between uplink and downlink component carriers according to a seventh embodiment of the present invention;

fig. 12 is a schematic structural diagram of an apparatus for transmitting uplink HARQ feedback information according to the present invention.

Detailed Description

The technical solution of the present invention is further elaborated below with reference to the drawings and the specific embodiments.

The method for sending uplink HARQ feedback information provided by the present invention, as shown in fig. 3, mainly includes the following steps:

step 301, the terminal and the base station determine PHICH resources according to the index of the downlink component carrier where the PHICH is located, the group number of the PHICH, and the index of the orthogonal sequence in the PHICH group.

PHICH resource combination in the present invention

Determining, wherein,

as an index of a downlink component carrier where the PHICH is located,

is the group number of the PHICH,

is an index of the orthogonal sequence in the PHICH group.

Wherein the parameters

Can be determined according to

And the index of the downlink component carrier where the latest UL grant information related to the transport block carried by the corresponding PUSCH is consistent. The index of the downlink component carrier where the UL grant information is located is consistent with the index of the downlink component carrier where the PDCCH carrying the UL grant information is located. For example, in the first embodiment shown in fig. 4, DL carrier represents a downlink component carrier, and UL carrier represents an uplink component carrier. For transport block ULTB1, a PDCCH of UL grant information (denoted as UL grant #0) in N subframe UL carrier #0 transmits PUSCH data corresponding to UL grant #0 in N + N (N is determined by the time relationship between the uplink grant and the corresponding PUSCH transmission) subframe on DL carrier #1, and a PHICH data corresponding to this PUSCH data transmission is transmitted on DL carrier #1 in N + k (k is determined by the time relationship between the scheduled PUSCH transmission and the corresponding PHICH resource) subframe.

In addition, for a PUSCH with semi-persistent configuration (semi-persistent configured), if there is corresponding UL grant information in a subframe that is used for transmitting UL grant information and is closest to the PUSCH, an index of a downlink component carrier of uplink harq feedback information related to the PUSCH is consistent with an index of a downlink component carrier where a PDCCH carrying the UL grant information is located; and if the latest subframe used for sending the UL grant information of the PUSCH does not have corresponding UL grant information, the index of the downlink component carrier of the uplink HARQ feedback information related to the PUSCH is consistent with the index of the downlink component carrier where the latest semi-persistently set UL grant information is located.

For example, in the second embodiment shown in fig. 5 and 6, the PDCCH of UL grant information in which UL carrier #0 is set in the semi-persistent state nearest to the N subframes is set in DL carrier # 0. As shown in fig. 5, if a PDCCH having associated UL grant information (denoted UL grant #0) in N subframes is on DL carrier #1, and in N + N (N is determined by the time relationship between the uplink grant and the corresponding PUSCH transmission) subframes, PUSCH data corresponding to UL grant #0 is transmitted, and in N + k (k is determined by the time relationship between the scheduled PUSCH transmission and the corresponding PHICH resource) subframes, HARQ feedback information (ACK/NACK) corresponding to this PUSCH data transmission is on DL carrier # 1; as shown in fig. 6, if there is no associated UL grant information in N subframes, N + k subframes, the PUSCH data transmission corresponds to PHICH #0 on DL carrier # 0.

In addition, the inventionOr determined by the pairing relationship between the uplink and downlink component carriers. The pairing relationship between the uplink component carrier and the downlink component carrier is a common parameter of the cell.

When the pairing relationship of the uplink component carrier and the downlink component carrier allocated by the terminal is that one downlink component carrier is paired with one uplink component carrier, the uplink HARQ feedback information of the PUSCH in the uplink component carrier is carried

And determining the uplink component carrier wave index of the PUSCH corresponding to the uplink component carrier wave index according to the pairing relation of the uplink component carrier wave and the downlink component carrier wave.

For example, in the third embodiment shown in fig. 7, a dashed double-arrow line indicates the pairing relationship between the uplink and downlink component carriers, and UL carrier #0 is paired with DL carrier # 0. The PDCCH of UL grant information in N subframes UL carrier #0 is on DL carrier #1, PUSCH data transmission corresponding to UL grant information is on DL carrier #0 in N + N (N is determined by the time relationship of the uplink grant and the corresponding PUSCH transmission) subframes, and PHICH #0 corresponding to this PUSCH data transmission is on DL carrier #0 in N + k (k is determined by the time relationship of the scheduled PUSCH transmission and the corresponding PHICH resource) subframes.

When the pairing relationship of the uplink component carrier and the downlink component carrier allocated by the terminal is that a plurality of uplink component carriers are paired with one downlink component carrier, for each uplink component carrier, the uplink HARQ inverse of the PUSCH is carriedFeeding information

And determining the uplink component carrier wave index of the PUSCH corresponding to the uplink component carrier wave index according to the pairing relation of the uplink component carrier wave and the downlink component carrier wave.

When the pairing relationship of the uplink component carrier and the downlink component carrier allocated by the terminal is that a plurality of downlink component carriers are paired with one uplink component carrier, the uplink component carrier carries the uplink HARQ feedback information of the PUSCH in the uplink component carrier

Determining by the maximum or minimum index of PRB distributed in the uplink component carrier wave where the corresponding PUSCH is located; or determine

A maximum or minimum index of a plurality of downlink component carriers; or determineIndexing a downlink component carrier with the largest downlink broadband in a plurality of downlink component carriers; or determine

A downlink component carrier index for a primary component carrier of a plurality of downlink component carriers.

Further, the PRBs available in the uplink component carrier are divided into r groups, each group corresponds to one downlink component carrier in the allocated downlink component carriers, the downlink component carriers corresponding to each group are different, and indexes of the PRBs included in each group are different from each other, where r is the number of the downlink component carriers. The downlink component carrier index corresponding to the group of the minimum or maximum index of the PRB allocated by the PUSCH in the uplink component carrier is the downlink component carrier index of the PHICH for transmitting the uplink HARQ feedback information related to the PUSCH

For example, in embodiment four shown in fig. 8, UL carrier #0 is paired with DL carrier #0 and DL carrier # 1; wherein the system bandwidth of the DL carrier #1 is greater than the system bandwidth of the DL carrier #0, and the DL carrier #1 is a primary component carrier. The PDCCH of UL grant information in N subframes UL carrier #0 transmits PUSCH data corresponding to the UL grant information in N + N (N is determined by a time relationship between an uplink grant and a corresponding PUSCH transmission) subframes in DL carrier # 1.

If it is determined thatBased on the minimum index principle in a plurality of downlink component carriers, PHICH #0 corresponding to the N + k subframe is on DL carrier # 1; if it is determined that

As the maximum index principle in multiple downlink component carriers, then N + k (k is determined by the time relationship of scheduled PUSCH transmission and corresponding PHICH resource) subframes, with the corresponding PHICH #0 on DL carrier # 0.

If it is determined that

The location of (2) is the principle of the index of the downlink component carrier with the largest downlink bandwidth among the multiple downlink component carriers, and the PHICH #0 corresponding to the N + k subframe is on the DL carrier # 1.

If it is determined that

The location of (2) is a principle of a downlink component carrier index of a primary component carrier among a plurality of downlink component carriers, and PHICH #0 corresponding to an N + k subframe is on DL carrier # 1.

If in accordance withAccording to the principle determined by the maximum or minimum index of the PRB allocated in the uplink component carrier where the corresponding PUSCH is located, when the maximum or minimum index of the allocated PRB is in the range of the available PRB grouping in the uplink component carrier corresponding to the DL carrier #0, the PHICH #0 corresponding to the N + N + k subframe is on the DL carrier # 0; when allocated PRB maximum or minimum index is in DL carrier #1, the PHICH #0 corresponding to the N + k subframe is on the DL carrier # 1.

In addition, forAnd determining parameters, namely setting a PHICH (physical hybrid automatic repeat request indicator channel) of uplink HARQ feedback information of a PUSCH (physical uplink shared channel) of m uplink component carriers carried by one downlink component carrier, wherein the index of the uplink component carrier is 0-m-1. For an uplink component carrier with a carrier index of i ∈ (0, m-1),the parameters may be indexed asNumber of PHICH groups of downlink component carriers

Cyclic shift amount n of DMRS defined in corresponding PUSCH-related uplink grant_DMRSSpreading factor of PHICH modulation

PRB lowest index of corresponding PUSCH transmissionSubframe index I of PUSCH_PHICHOne or more of the PHICH parameters specific to the uplink component carrier are determined.

Further, if the HARQ feedback information of the PUSCH of the m uplink component carriers adopts a bundling (bundling) manner, the HARQ feedback information is transmitted in a bundled format

Is determined by the following formula:

$n_{\mathrm{PHICH}}^{\mathrm{group}}=(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}---\left(2\right)$

in the above formula

And n_DMRSIs determined by:

if one of the m uplink component carriers is in pairing relationship with the downlink component carrier

The lowest index, n, of the PRB allocated for the corresponding PUSCH uplink resource in the uplink component carrier_DMRSThe amount of cyclic shift for the DMRS defined in the corresponding uplink grant.

If a plurality of m uplink component carriers are in pairing relationship with the downlink component carrier

Is the maximum index or the minimum index in m uplink component carriers, or the maximum bandwidth, or is the corresponding PUSCH uplink in the uplink component carrier of the primary component carrierThe lowest index of the resource-allocated PRB; n is_DMRSThe amount of cyclic shift for the DMRS defined in the corresponding uplink grant.

For example, in DL carrier #1, PDCCH of UL grant information (denoted as UL grant #0 and UL grant #1) of N subframes UL carrier #0 and UL carrier #1 transmits PUSCH data of N + N (N ≧ 4) subframes UL carrier #0 and UL carrier #1, and the PHICH packet of UL carrier #0 and UL carrier #1 corresponding to N + k (k ≧ 8) subframes is located at the downlink component carrier position where the PHICH packet is located

The determination rule of the parameter is designated as DL carrier # 0. ThenDetermined by the above equations (2) and (3).

In the fifth embodiment shown in fig. 9, UL carrier #0 and DL carrier #0 are in a pairing relationship, then

And n_DMRSCan be determined by: namely, it is

Lowest index, n, of PRBs allocated for corresponding PUSCH uplink resources in UL carrier #0_DMRSThe amount of cyclic shift for the DMRS defined in the corresponding uplink grant.

In the sixth embodiment shown in fig. 10, UL carrier #0, UL carrier #1 and DL carrier #0 are in a paired relationship, the bandwidth of UL carrier #0 is greater than DL carrier #1, and UL carrier #0 is a primary component carrier. Then

And n_DMRSCan be determined by:

if it is determined that

For the minimum index principle among a plurality of downlink component carriers,lowest index, n, of PRBs allocated for corresponding PUSCH uplink resources in ULCarrier #0_DMRSA cyclic shift amount for a DMRS defined in a corresponding uplink grant; if it is determined that

For the minimum index principle among a plurality of downlink component carriers,

lowest index, n, of PRBs allocated for corresponding PUSCH uplink resources in UL carrier #1_DMRSThe amount of cyclic shift for the DMRS defined in the corresponding uplink grant.

If it is determined that

Is a principle of a downlink component carrier index of a downlink wideband maximum among a plurality of downlink component carriers,

lowest index, n, of PRBs allocated for corresponding PUSCH uplink resources in UL carrier #0_DMRSThe amount of cyclic shift for the DMRS defined in the corresponding uplink grant.

If it is determined that

Is a principle of a downlink component carrier index of a primary component carrier among a plurality of downlink component carriers,

and the lowest index of the PRB allocated for the corresponding PUSCH uplink resource in UL carrier #0, wherein the nDMRS is the cyclic shift amount of the DMRS defined in the corresponding uplink grant.

Further, if there is a PHICH for the uplink HARQ feedback information of the PUSCH of each uplink component carrier, the carrier index is i ∈ (0, m-1) for the uplink component carrier

The parameters are determined by:

$n_{\mathrm{PHICH}}^{\mathrm{group}}=(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+n_{\mathrm{DMRS}}+N_i)\mathrm{mod}{N}_{\mathrm{PHICH},i}^{\mathrm{group}}+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+N_{\mathrm{offset},i}^{\mathrm{group}}---\left(4\right)$

wherein,

the number of PHICH groups being DL carrier # 1. N is a radical of_i、M_i、

And

the PHICH related parameters of the uplink component carrier i are represented by non-negative integers. N is a radical of_iAnd M_iMay be of the same value, i.e. M_i＝N_i；

And

is less than

When m is 1, N_i、M_iAnd

is a non-volatile organic compound (I) with a value of 0, $N_{\mathrm{PHICH},0}^{\mathrm{group}}=N_{\mathrm{PHICH}}^{\mathrm{group}}.$ N_i、M_i、

and

may be set by higher layer signaling and/or data link layer signaling.

For example, in the seventh embodiment shown in fig. 11, the PDCCH of UL grant information of N subframes UL carrier #0 and UL carrier #1 is used for DL carrier #1, PUSCH data transmission of subframes UL carrier #0 and UL carrier #1 is performed in N + N (N is determined by the time relationship between the uplink grant and the corresponding PUSCH transmission), and downlink component carrier positions where the corresponding PHICH #0 and PHICH #1 are located are determined by the above-mentioned locations in N + k (k is determined by the time relationship between the scheduled PUSCH transmission and the corresponding PHICH resource) subframes

The determination rule of the parameter is designated as DL carrier # 0. Uplink component carrier with carrier index of i epsilon (0, m-1)Of waves

The parameters are determined by the above equations (4) and (5).

And step 302, the base station transmits the uplink HARQ feedback information in the determined PHICH resource.

In case that a plurality of downlink component carriers and a plurality of uplink component carriers coexist, the terminal and the base station can rely on PHICH resources

And acquiring downlink component carriers corresponding to the uplink HARQ feedback information, thereby realizing normal operation of the terminal in a spectrum aggregation mode, being beneficial to the compatibility of LTE-Advanced and LTE-Advanced-8, and being beneficial to improving the scheduling flexibility and throughput of an LTE-Advanced system.

In order to implement the method for sending uplink HARQ feedback information, the present invention further provides an apparatus for sending uplink HARQ feedback information, as shown in fig. 12, the apparatus includes: the resource determining module 10 and the information sending module 20 are connected with each other. A resource determining module 10, configured to determine an index of a downlink component carrier where the PHICH is located

Group number of PHICHAnd index of orthogonal sequence in PHICH group

And determining PHICH resources. And an information sending module 20, configured to send uplink HARQ feedback information according to the determined PHICH resource.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims (10)

1. A method for sending uplink hybrid automatic repeat request (HARQ) feedback information is characterized by comprising the following steps:

the terminal and the base station indicate the index of the downlink component carrier where the PHICH is located according to the physical hybrid retransmission

Group number of PHICH

And index of orthogonal sequence in PHICH group

Determining PHICH resources;

and the station transmits the uplink HARQ feedback information on the determined PHICH resource.

2. The method of claim 1, wherein the method further comprises transmitting uplink HARQ feedback information

And the indexes of the downlink component carriers where the latest uplink authorization information related to the transmission block carried by the corresponding physical uplink shared channel PUSCH is consistent.

3. The method of claim 2, wherein an index of a downlink cc on which the uplink grant information is located is consistent with an index of a downlink cc on which a physical downlink control channel PDCCH carrying the uplink grant information is located.

4. The method according to claim 3, wherein for a semi-persistent PUSCH, if there is corresponding uplink grant information in a latest subframe used for transmitting uplink grant information before the PUSCH, an index of a downlink component carrier of the uplink HARQ feedback information related to the PUSCH is consistent with an index of a downlink component carrier where a PDCCH carrying the uplink grant information is located; and if the subframe does not have corresponding uplink authorization information, the index of the downlink component carrier of the uplink HARQ feedback information related to the PUSCH is consistent with the index of the downlink component carrier where the latest semi-persistently set uplink authorization information is located.

5. The method of claim 1, wherein the method further comprises transmitting uplink HARQ feedback information

Allocation by uplink and downlink component carriersAnd determining the relation.

6. The method of claim 5, wherein when the terminal is allocated uplink and downlink component carriers with a pairing relationship of one downlink component carrier and one uplink component carrier, the uplink HARQ feedback information of the PUSCH in the uplink component carrier is carriedAnd determining the uplink component carrier wave index where the corresponding PUSCH is located according to the pairing relation of the uplink component carrier wave and the downlink component carrier wave.

7. The method of claim 5, wherein when the terminal is allocated uplink and downlink component carriers with a pairing relationship between multiple downlink component carriers and one uplink component carrier, the uplink HARQ feedback information of PUSCH in the uplink component carrier is carriedDetermining by the maximum or minimum index of a physical resource block PRB allocated in an uplink component carrier where the corresponding PUSCH is located; or determine

A maximum or minimum index of a plurality of downlink component carriers; or determine

Indexing a downlink component carrier with the largest downlink broadband in a plurality of downlink component carriers; or determine

A downlink component carrier index for a primary component carrier of a plurality of downlink component carriers.

8. The method of claim 5, wherein when the uplink and downlink CC allocated to the terminal is multiple uplink CC, the pairing relationship isWhen a wave is matched with a downlink component carrier, for each uplink component carrier, carrying uplink HARQ feedback information of PUSCH in the uplink component carrierAnd determining the uplink component carrier wave index where the corresponding PUSCH is located according to the pairing relation of the uplink component carrier wave and the downlink component carrier wave.

9. The method of claim 1, wherein the method further comprises transmitting uplink HARQ feedback information

And

by an index ofThe number of PHICH groups of the downlink component carrier, the cyclic shift amount of the demodulation pilot frequency defined in the uplink authorization related to the corresponding PUSCH, the lowest index of a Physical Resource Block (PRB) transmitted by the corresponding PUSCH, the spreading factor of the PHICH modulation, the subframe index where the PUSCH is located and one or more of the PHICH parameters specific to the uplink component carrier.

10. An apparatus for transmitting uplink HARQ feedback information, the apparatus comprising:

a resource determining module for determining the index of the downlink component carrier in which the PHICH is located

Group number of PHICHAnd index of orthogonal sequence in PHICH group

Determining PHICH resources;

and the information sending module is used for sending the uplink HARQ feedback information according to the determined PHICH resource.

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