CN104685813A

CN104685813A - Method and device for sending and receiving feedback information

Info

Publication number: CN104685813A
Application number: CN201380003107.5A
Authority: CN
Inventors: 官磊; 薛丽霞
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2013-05-08
Filing date: 2013-05-08
Publication date: 2015-06-03
Anticipated expiration: 2033-05-08
Also published as: CN104685813B

Abstract

The embodiment of the present invention provides the method and device for sending and receiving feedback information, and relates to the communication field. The method for sending the feedback information comprises the steps of receiving the uplink data sent by a user equipment (UE); determining a first load length, wherein the first load length is one of at least two load lengths in a load length set; determining the position index of the feedback information corresponding to the uplink data in a feedback information set, wherein the length of the feedback information set is the first load length; according to the position index, mapping the feedback information corresponding to the uplink data to the feedback information set; according to the first load length, carrying out the jointed coding on the feedback information set; and sending the coded feedback information set. According to the present invention, the coding cost can be reduced, and the coding gain can be improved.

Description

Method and device for sending feedback information and method and device for receiving feedback information

Technical Field

The present invention relates to the field of communications, and in particular, to a method and an apparatus for sending feedback information and receiving feedback information.

Background

An LTE (Long Term Evolution ) system may employ an HARQ (hybrid automatic Repeat Request) technology in a physical layer to schedule a UE (User Equipment), and then the scheduled UE may send uplink data to a base station, and after the base station receives the uplink data sent by the UE, the base station may send feedback information to the UE.

In the current LTE system, the base station may send feedback information to the UE in the following manner: after receiving uplink data sent by the UE, the base station acquires feedback information needing to be sent to the UE, then independently codes the feedback information needing to be sent to the UE in an independent coding mode to obtain coded feedback information, and then sends the coded feedback information to the UE.

And the feedback information required to be sent to the UE is independently coded by adopting an independent coding mode, the required coding cost is higher, and the coding gain is reduced.

Disclosure of Invention

In order to reduce coding overhead and improve coding gain, embodiments of the present invention provide a method and an apparatus for sending feedback information and receiving feedback information. The technical scheme is as follows:

in a first aspect, a method for sending feedback information includes:

receiving uplink data sent by User Equipment (UE);

determining a first load length, wherein the first load length is one of at least two load lengths in a set of load lengths;

determining a position index of feedback information corresponding to the uplink data in a feedback information group, wherein the length of the feedback information group is the length of the first load;

mapping the feedback information corresponding to the uplink data to the feedback information group according to the position index;

jointly encoding the feedback information group according to the first load length;

and sending the coded feedback information group.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the determining the first load length includes at least one of:

determining a load length from the load length set as the first load length according to the quantity of feedback information corresponding to the uplink data;

determining a load length from the load length set as the first load length according to the identity of the UE; and

and determining a load length from the load length set as the first load length according to the index of the resource used by the scheduling information for scheduling the uplink data or the index of the resource used by the uplink data.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, after the determining the first load length, the method further includes:

and notifying the UE of the identifier of the first load length so that the UE can acquire the first load length according to the identifier of the first load length.

With reference to the second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the notifying the UE of the first payload length includes:

and sending a signaling to the UE, wherein the signaling carries the identifier of the first load length, and the signaling comprises layer 1 signaling or layer 2 signaling.

With reference to the first aspect or any one of the first to third possible implementation manners of the first aspect, in a fourth possible implementation manner of the first aspect, the determining a position index of feedback information corresponding to the uplink data in a feedback information group includes at least one of the following manners:

determining a position index of feedback information corresponding to the uplink data in a feedback information group according to the Radio Network Temporary Identifier (RNTI) of the UE;

determining a position index of feedback information corresponding to the uplink data in a feedback information group according to the index of the resource used by the uplink data; and

and determining the position index of the feedback information corresponding to the uplink data in a feedback information group according to the index of the resource used for scheduling the scheduling information of the uplink data.

With reference to the first aspect or any one of the first to fourth possible implementation manners of the first aspect, in a fifth possible implementation manner of the first aspect, after determining a position index of feedback information corresponding to the uplink data in a feedback information group, the method further includes:

and informing the UE of the position index, so that the UE acquires feedback information corresponding to the uplink data from the feedback information group according to the position index.

With reference to the fifth possible implementation manner of the first aspect, in a sixth possible implementation manner of the first aspect, the notifying the UE of the position index includes at least one of:

sending a Radio Resource Control (RRC) special signaling to the UE, wherein the RRC special signaling carries the identifier of the position index, so that the UE acquires the position index according to the RRC special signaling; and

and sending scheduling information for scheduling the uplink data to the UE, wherein a demodulation reference signal cyclic shift word field in the scheduling information carries the position index.

With reference to the first aspect or any one of the first to sixth possible implementation manners of the first aspect, in a seventh possible implementation manner of the first aspect, before the sending the encoded feedback information group, the method further includes:

determining time-frequency resources for sending the coded feedback information group according to resources used for scheduling the scheduling information of the uplink data;

the sending the encoded feedback information group includes:

and sending the coded feedback information group on the time frequency resource.

In a second aspect, a method of receiving feedback information includes:

transmitting uplink data to a base station;

receiving a feedback information group sent by the base station;

determining a first load length corresponding to the feedback information group from a load length set, wherein the load length set comprises at least two load lengths;

determining a position index of feedback information corresponding to the uplink data in the feedback information group;

and decoding the feedback information group according to the first load length, and acquiring feedback information corresponding to the uplink data from the decoded feedback information group according to the position index.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the determining, from the payload length set, a first payload length corresponding to the feedback information group includes at least one of the following manners:

determining the first load length from the load length set according to the identifier of the first load length notified by the base station;

determining the first load length from the load length set according to the identity of User Equipment (UE); and

and determining the first load length from the load length set according to the index of the resource used by the scheduling information for scheduling the uplink data or the index of the resource used by the uplink data.

With reference to the first possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the determining, according to the identifier of the first payload length notified by the base station, the first payload length from the payload length set includes:

receiving a signaling sent by the base station, wherein the signaling carries the identifier of the first load length, and the signaling comprises layer 1 signaling and/or layer 2 signaling;

determining the first payload length from the set of payload lengths based on the identification of the first payload length.

With reference to the second aspect, the first possible implementation manner or the second possible implementation manner of the second aspect, in a third possible implementation manner of the second aspect, the determining a position index of the feedback information corresponding to the uplink data in the feedback information group includes at least one of the following manners:

acquiring a position index of feedback information corresponding to the uplink data in the feedback information group, wherein the feedback information is notified by the base station;

determining a position index of feedback information corresponding to the uplink data in the feedback information group according to a Radio Network Temporary Identifier (RNTI) of User Equipment (UE);

determining a position index of feedback information corresponding to the uplink data in the feedback information group according to the index of the resource used by the uplink data; and

and determining the position index of the feedback information corresponding to the uplink data in the feedback information group according to the index of the resource used for scheduling the scheduling information of the uplink data.

With reference to the third possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, the obtaining a position index of feedback information corresponding to the uplink data, which is notified by the base station, in the feedback information group includes at least one of the following manners:

receiving a Radio Resource Control (RRC) dedicated signaling sent by the base station, wherein the RRC dedicated signaling carries an identifier of a position index of feedback information corresponding to the uplink data in the feedback information group, and acquiring the position index according to the identifier of the position index; and

and receiving scheduling information for scheduling the uplink data, wherein a demodulation reference signal cyclic shift field in the scheduling information carries a position index of feedback information corresponding to the uplink data in the feedback information group.

With reference to the second aspect or any one of the first to fourth possible implementation manners of the second aspect, in a fifth possible implementation manner of the second aspect, before the receiving the feedback information group sent by the base station, the method further includes:

determining a time-frequency resource used by the base station for sending the feedback information group according to a resource used by scheduling information of the uplink data;

the receiving the feedback information group sent by the base station includes:

and receiving the feedback information group sent by the base station on the time frequency resource.

In a third aspect, a base station includes:

a receiving unit, configured to receive uplink data sent by a user equipment UE;

a determining unit, configured to determine a first load length, where the first load length is one of at least two load lengths in a load length set; determining a position index of feedback information corresponding to the uplink data received by the receiving unit in a feedback information group, wherein the length of the feedback information group is the length of the first load;

a processing unit, configured to map, according to the position index determined by the determining unit, feedback information corresponding to the uplink data to the feedback information group; jointly encoding the feedback information group according to the first load length determined by the determining unit;

and the sending unit is used for sending the feedback information group coded by the processing unit.

With reference to the third aspect, in a first possible implementation manner of the third aspect,

the determining unit is specifically configured to determine the first load length using at least one of the following ways, including:

With reference to the third aspect or the first possible implementation manner of the third aspect, in a second possible implementation manner of the third aspect,

the sending unit is further configured to notify the UE of the identifier of the first payload length, so that the UE obtains the first payload length according to the identifier of the first payload length.

With reference to the second possible implementation manner of the third aspect, in a third possible implementation manner of the third aspect,

the sending unit is further configured to send a signaling to the UE, where the signaling carries the identifier of the first payload length, and the signaling includes layer 1 signaling or layer 2 signaling.

With reference to the third aspect or any one of the first to third possible implementation manners of the third aspect, in a fourth possible implementation manner of the third aspect,

the determining unit is specifically configured to determine the position index of the feedback information corresponding to the uplink data in the feedback information group by using at least one of the following manners, including:

With reference to the third aspect or any one of the first to fourth possible implementation manners of the third aspect, in a fifth possible implementation manner of the third aspect,

the sending unit is further configured to notify the UE of the position index, so that the UE obtains feedback information corresponding to the uplink data from the feedback information group according to the position index.

With reference to the fifth possible implementation manner of the third aspect, in a sixth possible implementation manner of the third aspect,

the sending unit is further configured to notify the UE of the position index by using at least one of the following manners, including:

With reference to the third aspect or any one of the first to sixth possible implementation manners of the third aspect, in a seventh possible implementation manner of the third aspect,

the determining unit is further configured to determine, according to a resource used for scheduling the scheduling information of the uplink data, a time-frequency resource used for transmitting the encoded feedback information group;

the sending unit is configured to send the encoded feedback information group on the time-frequency resource determined by the determining unit.

A fourth aspect, a user equipment, comprising:

a sending unit, configured to send uplink data to a base station;

a receiving unit, configured to receive a feedback information group sent by the base station;

a determining unit, configured to determine a first payload length corresponding to the feedback information group received by the receiving unit from a payload length set, where the payload length set includes at least two payload lengths; determining a position index of feedback information corresponding to the uplink data sent by the sending unit in the feedback information group;

and the processing unit is configured to decode the feedback information group according to the first load length determined by the determining unit, and acquire feedback information corresponding to the uplink data from the decoded feedback information group according to the position index determined by the determining unit.

With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect,

the determining unit is specifically configured to determine the first payload length corresponding to the feedback information group from a payload length set by using at least one of the following manners, including:

With reference to the first possible implementation manner of the fourth aspect, in a second possible implementation manner of the fourth aspect,

the determining unit is configured to receive a signaling sent by the base station, where the signaling carries an identifier of the first payload length, and the signaling includes a layer 1 signaling and/or a layer 2 signaling; determining the first payload length from the set of payload lengths based on the identification of the first payload length.

With reference to the fourth aspect, the first possible implementation manner or the second possible implementation manner of the fourth aspect, in a third possible implementation manner of the fourth aspect,

With reference to the third possible implementation manner of the fourth aspect, in a fourth possible implementation manner of the fourth aspect,

the determining unit is specifically configured to obtain, by using at least one of the following manners, a position index of feedback information corresponding to the uplink data notified by the base station in the feedback information group, where the position index includes:

With reference to the fourth aspect or any one of the first to fourth possible implementation manners of the fourth aspect, in a fifth possible implementation manner of the fourth aspect,

the determining unit is further configured to determine, according to a resource used for scheduling the scheduling information of the uplink data, a time-frequency resource used for the base station to send the feedback information group;

the receiving unit is configured to receive the feedback information group sent by the base station on the time-frequency resource determined by the determining unit.

A fifth aspect, a base station, comprising:

the receiver is used for receiving uplink data sent by User Equipment (UE);

a processor configured to determine a first load length, wherein the first load length is one of at least two load lengths in a set of load lengths; determining a position index of feedback information corresponding to the uplink data received by the receiver in a feedback information group, wherein the length of the feedback information group is the length of the first load; mapping the feedback information corresponding to the uplink data to the feedback information group according to the position index; jointly encoding the feedback information group according to the first load length;

a transmitter for transmitting the feedback information group encoded by the processor.

With reference to the fifth aspect, in a first possible implementation manner of the fifth aspect, the processor is specifically configured to determine the first payload length according to at least one of the following manners, including:

selecting a load length from the load length set as a first load length according to the quantity of feedback information corresponding to the uplink data;

selecting a load length from the load length set as a first load length according to the identity of the UE;

and selecting the load length from the load length set as a first load length according to the index of the resource used for scheduling the scheduling information of the uplink data or the index of the resource used for the uplink data.

With reference to the fifth aspect or the first possible implementation manner of the fifth aspect, in a second possible implementation manner of the fifth aspect,

the transmitter is further configured to notify the UE of the identifier of the first payload length, so that the UE obtains the first payload length according to the identifier of the first payload length.

With reference to the second possible implementation manner of the fifth aspect, in a third possible implementation manner of the fifth aspect,

the transmitter is further configured to send a signaling to the UE, where the signaling carries the identifier of the first payload length, and the signaling includes layer 1 signaling or layer 2 signaling.

With reference to the fifth aspect or any one of the first to third possible implementation manners of the fifth aspect, in a fourth possible implementation manner of the fifth aspect,

the processor is specifically configured to determine a position index of feedback information corresponding to the uplink data in a feedback information group by using at least one of the following manners, including:

With reference to the fifth aspect or any one of the first to fourth possible implementation manners of the fifth aspect, in a fifth possible implementation manner of the fifth aspect,

the transmitter is further configured to notify the UE of the position index, so that the UE obtains feedback information corresponding to the uplink data from the feedback information group according to the position index.

With reference to the fifth possible implementation manner of the fifth aspect, in a sixth possible implementation manner of the fifth aspect,

the transmitter is further configured to notify the UE of the location index using at least one of:

With reference to the fifth aspect or any one of the first to sixth possible implementation manners of the fifth aspect, in a seventh possible implementation manner of the fifth aspect,

the processor is further configured to determine, according to a resource used for scheduling the scheduling information of the uplink data, a time-frequency resource for transmitting the encoded feedback information group;

the transmitter is configured to transmit the encoded feedback information group on the time-frequency resource determined by the processor.

A sixth aspect, a user equipment, includes:

a transmitter for transmitting uplink data to a base station;

a receiver, configured to receive a feedback information group sent by the base station;

a processor, configured to determine a first payload length corresponding to the feedback information group received by the receiver from a payload length set, where the payload length set includes at least two payload lengths; determining a position index of feedback information corresponding to the uplink data sent by the sender in the feedback information group; and decoding the feedback information group according to the first load length, and acquiring feedback information corresponding to the uplink data from the decoded feedback information group according to the position index.

With reference to the sixth aspect, in a first possible implementation manner of the sixth aspect,

the processor is specifically configured to determine a first payload length corresponding to the feedback information group from a payload length set by using at least one of the following manners, including:

With reference to the first possible implementation manner of the sixth aspect, in a second possible implementation manner of the sixth aspect,

the processor is configured to receive a signaling sent by the base station, where the signaling carries an identifier of the first payload length, and the signaling includes a layer 1 signaling and/or a layer 2 signaling; determining the first payload length from the set of payload lengths based on the identification of the first payload length.

With reference to the sixth aspect, the first possible implementation manner or the second possible implementation manner of the sixth aspect, in a third possible implementation manner of the sixth aspect,

the processor is specifically configured to determine a position index of feedback information corresponding to the uplink data in the feedback information group by using at least one of the following manners, including:

With reference to the third possible implementation manner of the sixth aspect, in a fourth possible implementation manner of the sixth aspect,

the processor is specifically configured to obtain, by using at least one of the following manners, a position index of feedback information in the feedback information group corresponding to the uplink data notified by the base station, where the position index includes:

With reference to the sixth aspect or any one of the first to fourth possible implementation manners of the sixth aspect, in a fifth possible implementation manner of the sixth aspect,

the processor is further configured to determine, according to a resource used for scheduling information of the uplink data, a time-frequency resource used for the base station to send the feedback information group;

the receiver is configured to receive the feedback information group sent by the base station on the time-frequency resource determined by the processor.

In the embodiment of the present invention, feedback information corresponding to a plurality of uplink data may be mapped to a feedback information group, and the feedback information corresponding to the plurality of uplink data included in the feedback information group is jointly encoded, so that the encoding overhead may be reduced, and the encoding gain may be improved; in addition, because the first load length is determined and the length of the feedback information group is the first load length, the determined first load length can be equal to the number of the feedback information corresponding to the uplink data as much as possible, so that the number of idle positions which are not mapped with the feedback information in the feedback information group can be reduced, the resources for transmitting the feedback information are reduced, the reliability for transmitting the feedback information is improved, and the system overhead is reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a flowchart of a method for sending feedback information according to an embodiment of the present invention;

fig. 2 is a flowchart of another method for sending feedback information according to an embodiment of the present invention;

fig. 3 is a flowchart of a method for receiving feedback information according to an embodiment of the present invention;

fig. 4 is a flowchart of another method for receiving feedback information according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a base station according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a user equipment according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of another base station according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of another ue according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Referring to fig. 1, an embodiment of the present invention provides a method for sending feedback information, including:

step 101: receiving uplink data sent by UE;

step 102: determining a first load length, wherein the first load length is one of at least two load lengths in a load length set;

step 103: determining a position index of feedback information corresponding to the uplink data in a feedback information group, wherein the length of the feedback information group is a first load length;

step 104: mapping the feedback information corresponding to the uplink data to the feedback information group according to the position index;

step 105: jointly encoding the feedback information group according to the first load length;

step 106: and transmitting the encoded feedback information group.

On the basis of the embodiment shown in fig. 1, an embodiment of the present invention provides a method for sending feedback information, and referring to fig. 2, the method includes:

step 201: a base station receives uplink data sent by UE;

the UE receives scheduling information sent by the base station and sends uplink data to the base station according to the scheduling information.

The base station sends scheduling information to the UE in a first subframe to schedule the UE to send uplink data, where the first subframe may be any subframe, and the scheduling information may include information such as a resource and a modulation and coding scheme used by the uplink data.

And the UE receives the scheduling information and sends uplink data to the base station in a second subframe according to the scheduling information, wherein the number of subframes separated between the first subframe and the second subframe is integral multiple of a preset numerical value. For example, assuming that the first subframe is subframe n and the preset value is 4, the second subframe may be subframe n +4 or subframe n +8, etc. In addition, in the embodiment of the present invention, the preset value of 4 is merely illustrated, which is not intended to limit the scope of the present invention, and the preset value may be another integer, such as an integer of 5 or 6.

The base station may send scheduling information to a plurality of UEs in the first subframe, and each UE may send uplink data to the base station in the second subframe after receiving the scheduling information.

Step 202: the base station determines a first load length, wherein the first load length is one of at least two load lengths in a load length set;

wherein, the base station can determine the first load length by at least one of the following three ways:

firstly, the base station determines a load length from the load length set as a first load length according to the quantity of feedback information corresponding to the received uplink data.

And the base station selects a load length which is greater than or equal to the number from the load length set according to the number of the feedback information corresponding to the received uplink data, and takes the selected load length as the first load length.

Preferably, the base station selects a minimum load length from the load lengths greater than or equal to the number, and takes the selected minimum load length as the first load length.

For example, assuming that the load length set includes two load lengths, which are 4 and 6, respectively, and the number of feedback information corresponding to uplink data received by the base station is 3, the base station selects one load length 4 greater than or equal to the number 3 from the load length set.

Secondly, the base station determines a load length from the load length set as a first load length according to the identity of the UE.

Specifically, the base station performs a modulo operation on the identifier of each UE that needs to send feedback information according to the number of the load lengths included in the load length set to obtain a modulus of each UE, and selects the load length with the position index of the modulus as the first load length from the load length set if the moduli of each UE are the same.

For example, the UEs that need to send feedback information include UE1, UE2, and UE3, the identities of UE1, UE2, and UE3 are 2, 4, and 8, respectively, according to the number of the payload lengths included in the payload length set being 2, modulo operations are performed on identity 2 of UE1, identity 4 of UE2, and identity 8 of UE3, respectively, to obtain that the modulus of UE1, the modulus of UE2, and the modulus of UE3 are all 0, and the payload length 4 with the position index of 0 is selected from the payload length set as the first payload length.

Thirdly, the base station determines a load length from the load length set as the first load length according to the index of the resource used by the scheduling information for scheduling the uplink data or the index of the resource used by the received uplink data.

The base station determines, according to an index of a resource used for scheduling information of uplink data, a load length from the load length set as a first load length, where the first load length may be:

and the base station respectively performs modular operation on the index of the resource used by each scheduling information for scheduling the uplink data according to the number of the load lengths in the load length set to obtain the modulus of each scheduling information, and selects the load length with the position index of the modulus as the first load length from the load length set if the moduli of each scheduling information are the same.

For example, each piece of scheduling information for scheduling uplink data is scheduling information 1, 2, and 3, and the indexes of the resources used by scheduling information 1, 2, and 3 for scheduling uplink data are 12, 14, and 18, respectively, according to the number 2 of the load lengths included in the load length set, a modulo operation is performed on the index 12 of the resource used by scheduling information 1 for scheduling uplink data, the index 14 of the resource used by scheduling information 2, and the index 18 of the resource used by scheduling information 3, respectively, to obtain that the modulus of scheduling information 1, the modulus of scheduling information 2, and the modulus of scheduling information 3 are all 0, and a load length 4 with a position index of the modulus 0 is selected from the load length set as the first load length. Or,

the base station determines, according to the index of the resource used by the received uplink data, a load length from the load length set as a first load length, where the first load length may be:

and the base station respectively performs modular operation on the index of the resource used by each received uplink data according to the number of the load lengths in the load length set to obtain the modulus of each uplink data, and selects the load length with the position index of the modulus as the first load length from the load length set if the moduli of each uplink data are the same.

For example, each piece of received uplink data is uplink data 1, 2, and 3, and the indexes of the resources used by the uplink data 1, 2, and 3 are 18, 22, and 30, respectively, according to the number 2 of the load lengths included in the load length set, modulo operation is performed on the index 18 of the resource used by the uplink data 1, the index 22 of the resource used by the uplink data 2, and the index 30 of the resource used by the uplink data 3, respectively, to obtain that the modulus of the uplink data 1, the modulus of the uplink data 2, and the modulus of the uplink data 3 are all 0, and a load length 4 with a position index of the modulus 0 is selected from the load length set as the first load length.

The load length set may be a preset load length set, or may be one of a plurality of load length sets locally existing by the base station before the first load length is determined.

The base station receives uplink data sent by the UE at a second subframe, and sends feedback information corresponding to the uplink data at a third subframe, wherein the number of subframes separated from the third subframe and the second subframe is integral multiple of a preset value. For example, the second subframe is a subframe n +4, the preset value is 4, and the third subframe may be a subframe n +8 or a subframe n + 12.

If the base station successfully receives the uplink data sent by the UE, the feedback information corresponding to the uplink data that the base station needs to send to the UE may be ACK, and if the base station does not successfully receive the uplink data sent by the UE, the feedback information corresponding to the uplink data that the base station needs to send to the UE may be NACK.

In the embodiment of the present invention, the base station may first determine the first payload length and then receive the uplink data sent by the UE, or may first receive the uplink data sent by the UE and then determine the first payload length, so that there is no strict timing relationship between the two operations.

Preferably, the base station notifies the UE of the identifier of the first payload length, and may be:

and the base station sends a signaling to the UE, wherein the signaling carries the identifier of the first load length, and the signaling comprises layer 1 signaling or layer 2 signaling.

Preferably, the base station may configure the payload length in the UE through higher layer signaling.

Step 203: the base station determines a position index of feedback information corresponding to the received uplink data in a feedback information group, wherein the length of the feedback information group is a first load length;

the base station may determine the position index of the feedback information corresponding to the received uplink data in the feedback information group through at least one of the following three ways, including:

firstly, a base station determines a position index of feedback information corresponding to uplink data sent by UE in a feedback information group according to RNTI (Radio Network Temporary Identity) of the UE;

specifically, the base station performs a modulo operation on the RNTI of the UE according to the first load length to obtain a modulus of the UE, and uses the modulus as a position index of feedback information corresponding to uplink data sent by the UE in a feedback information group.

For example, assuming that the first payload length is 4, the UEs that need to send feedback information include UEs 1, 2, and 3, and RNTIs of UEs 1, 2, and 3 are 8, 9, and 10, respectively, the base station performs modulo operation on the RNTI of UE1, the RNTI of UE2, and the RNTI of UE3 being 10 according to the first payload length 4 to obtain a modulus of 0 for UE1, a modulus of 1 for UE2, and a modulus of 2 for UE3, where the modulus of 0 for UE1 is used as a position index of feedback information corresponding to uplink data sent by UE1 in the feedback information group, the modulus of 1 for UE2 is used as a position index of feedback information corresponding to uplink data sent by UE2 in the feedback information group, and the modulus of 2 for UE3 is used as a position index of feedback information corresponding to uplink data sent by UE3 in the feedback information group.

And secondly, the base station determines the position index of the feedback information corresponding to the received uplink data in the feedback information group according to the index of the resource used by the received uplink data.

Specifically, the base station performs a modulo operation on an index of a resource used by the received uplink data according to the first load length to obtain a modulus corresponding to the received uplink data, and uses the modulus corresponding to the received uplink data as a position index of feedback information corresponding to the received uplink data in the feedback information group.

For example, assuming that the first load length is 4, the received uplink data includes uplink data 1, 2, and 3, the index of the resource used by the uplink data 1 is 8, the index of the resource used by the uplink data 2 is 9, and the index of the resource used by the uplink data 3 is 10, the base station performs modulo operation on the index of the resource used by the uplink data 18, the index of the resource used by the uplink data 29, and the index of the resource used by the uplink data 3 according to the first load length 4 to obtain a modulus of the uplink data 1 of 0, a modulus of the uplink data 2 of 1, and a modulus of the uplink data 3 of 2, and uses the modulus of the uplink data 1 of 0 as the position index of the feedback information corresponding to the uplink data 1 in the feedback information group, uses the modulus of the uplink data 2 as the position index of the feedback information corresponding to the uplink data 2 in the feedback information group, and uses the modulus of the uplink data 3 of 2 as the position index of the feedback information corresponding to the uplink data 3 The position index of the feedback information in the feedback information group.

And thirdly, determining the position index of the feedback information corresponding to the received uplink data in the feedback information group according to the index of the resource used by the scheduling information of the scheduled and received uplink data.

Specifically, the base station performs a modulo operation on an index of a resource used for scheduling the scheduling information of the received uplink data according to the first load length to obtain a modulus of the scheduling information, and uses the modulus of the scheduling information as a position index of feedback information corresponding to the uplink data scheduled by the scheduling information in a feedback information group.

For example, assuming that the first load length is 4, the received uplink data includes uplink data 1, 2 and 3, and the index of the resource used for scheduling the scheduling information of uplink data 1 is 4, the index of the resource used for scheduling the scheduling information of uplink data 2 is 9, and the index of the resource used for scheduling the scheduling information of uplink data 3 is 10, the base station performs modulo operation on the index 8 of the resource used for scheduling the scheduling information of uplink data 1, the index 9 of the resource used for scheduling the scheduling information of uplink data 2, and the index 10 of the resource used for scheduling the scheduling information of uplink data 3 according to the first load length 4 to obtain a modulo operation of the scheduling information of scheduling uplink data 1 being 0, the modulo operation of scheduling information of scheduling uplink data 2 being 1, and the modulo operation of the scheduling information of scheduling uplink data 3 being 2, and taking the modulus 0 of the scheduling information for scheduling the uplink data 1 as the position index of the feedback information corresponding to the uplink data 1 in the feedback information group, taking the modulus 1 of the scheduling information for scheduling the uplink data 2 as the position index of the feedback information corresponding to the uplink data 2 in the feedback information group, and taking the modulus 2 of the scheduling information for scheduling the uplink data 3 as the position index of the feedback information corresponding to the uplink data 3 in the feedback information group.

Further, the base station notifies the UE of the position index of the feedback information in the feedback information group corresponding to the uplink data sent by the UE, and the position index may be:

sending a Radio Resource Control (RRC) dedicated signaling to the UE, wherein the RRC dedicated signaling carries the identifier of the position index, so that the UE acquires the position index according to the RRC dedicated signaling; and/or the presence of a gas in the gas,

In the embodiment of the present invention, the base station may select a field from the scheduling information, and set the selected field to carry the position index. Preferably, the base station selects a demodulation reference signal cyclic shift field in the scheduling information.

In the embodiment of the present invention, a reserved field in the RRC dedicated signaling may be used to carry the identifier of the location index, or a new field is added in the RRC dedicated signaling, and the new field carries the identifier of the location index.

Step 204: the base station respectively maps the received uplink data to the feedback information groups according to the position indexes of the feedback information corresponding to the received uplink data in the feedback information groups;

for example, the base station maps the uplink data 1 to the corresponding position in the feedback information group according to the position index 0 of the feedback information corresponding to the uplink data 1 in the feedback information group; mapping the uplink data 2 to the corresponding position in the feedback information group according to the position index 1 of the feedback information corresponding to the uplink data 2 in the feedback information group; and mapping the uplink data 3 to the corresponding position in the feedback information group according to the position index 2 of the feedback information corresponding to the uplink data 3 in the feedback information group.

Preferably, if there is an idle position in the feedback information group to which no feedback information is mapped, the preset bit is mapped on the idle position.

The preset bit may be bit 0 or bit 1. For example, the first payload length is 4, the length of the feedback information group is 4, that is, the feedback information group includes 4 positions, the positions corresponding to the position indexes 0, 1, and 2 in the feedback information group are all mapped with feedback information, and the position corresponding to the position index 3 is an idle position, so that the position corresponding to the position index 3 is mapped with the preset bit.

Step 205: the base station jointly codes the feedback information group according to the first load length to obtain a coded feedback information group;

step 206: and the base station transmits the coded feedback information group.

Preferentially, the base station can determine the time-frequency resource for sending the coded feedback information group according to the resource used by the scheduling information of the uplink data received by scheduling; and then sending the coded feedback information group on the determined time-frequency resource.

In the embodiment of the invention, the resources used by the scheduling information and the time-frequency resources used for sending the feedback information group are bound in advance; correspondingly, the base station acquires the time-frequency resource bound with the resource used by the scheduling information of the uplink data received by scheduling, and determines the acquired time-frequency resource as the time-frequency resource used for sending the coded feedback information group, so that the base station does not need to inform the UE of the time-frequency resource used for sending the coded feedback information group, the design can be simplified, and the overhead can be saved.

After receiving uplink data sent by the UE, if it is determined that feedback information corresponding to the uplink data is not sent to the UE, the base station sends a notification message to the UE, where the notification message is used to notify the UE not to send the feedback information of the uplink data.

If the number of the feedback information corresponding to the uplink data is small, the base station may not send the feedback information to the UE and notify the UE, so as to prevent the UE from detecting and receiving the wrong feedback information in the third subframe.

In the embodiment of the present invention, after receiving uplink data sent by the UE, the base station may first determine whether feedback information corresponding to the uplink data needs to be fed back, determine a first load length if it is determined that feedback information corresponding to the uplink data needs to be fed back, determine a position index of the received feedback information corresponding to the uplink data in a feedback information group, map the feedback information corresponding to the uplink data into the feedback information group according to the position index, perform joint coding on the feedback information group according to the first load length, and send the coded feedback information group. And if the feedback information corresponding to the uplink data does not need to be fed back, informing the UE not to send the feedback information corresponding to the uplink data.

The determining, by the base station, whether feedback information corresponding to the uplink data needs to be fed back may include:

and determining whether feedback information corresponding to the uplink data needs to be fed back or not according to the quantity of the feedback information corresponding to the current uplink data.

Specifically, if the number of feedback information corresponding to the current uplink data is smaller than the threshold, for example, only feedback information of one or two UEs needs to be fed back, and the feedback information of each UE is 1 or 2 bits, the base station may determine not to feed back the feedback information corresponding to the uplink data; and if the quantity of the feedback information corresponding to the current uplink data is greater than the threshold value, starting the sending method of the feedback information of the joint coding.

The scheme can ensure that the resource utilization rate is higher, namely when the feedback information needing to be fed back is extremely little, the scheme of the joint coding is not used, the resource overhead is saved, the influence on the UE is less, namely the individual UE can receive the notice of the base station and does not send the feedback information, and the individual UE can not receive the corresponding feedback information, so the false detection can not be caused.

Optionally, the base station may further determine whether feedback information corresponding to the uplink data needs to be fed back according to a downlink load condition in the current system, and specifically may determine according to a load of a control channel or a data channel, for example, if the load of the current control channel is heavy, so that there is no time-frequency resource or power resource to send the feedback information, even if the current feedback information is large in quantity, the feedback information may not be fed back. Of course, the determination may be made based on other information, which is not limited herein.

In the embodiment of the present invention, feedback information corresponding to a plurality of uplink data may be mapped to a feedback information group, and the feedback information corresponding to the plurality of uplink data included in the feedback information group is jointly encoded, so that the encoding overhead may be reduced, and the encoding gain may be improved; in addition, because the first load length is determined, and the length of the feedback information group is the first load length, the determined first load length can be equal to the number of the feedback information corresponding to the uplink data as much as possible, so that the number of idle positions which are not mapped with the feedback information in the feedback information group can be reduced, the resources for transmitting the feedback information are reduced, the reliability for transmitting the feedback information is improved, and the system overhead is reduced; the base station determines the position index of the feedback information corresponding to the received uplink data in the feedback information group according to the RNTI of the UE, the index of the resource used by the received uplink data or the index of the resource used by the scheduling information of the scheduling received uplink data, so that the base station does not need to inform the UE of the position index, the design can be simplified, and the system overhead can be further reduced.

Referring to fig. 3, an embodiment of the present invention provides a method for receiving feedback information, including:

step 301: transmitting uplink data to a base station;

step 302: receiving a feedback information group sent by a base station;

step 303: determining a first load length corresponding to the feedback information group from a load length set, wherein the load length set comprises at least two load lengths;

step 304: determining a position index of feedback information corresponding to the uplink data in the feedback information group;

step 305: and decoding the feedback information group according to the first load length, and acquiring feedback information corresponding to the uplink data from the decoded feedback information group according to the position index.

In the embodiment of the invention, because the first load length corresponding to the feedback information group is determined from the load length set, and the position index of the feedback information corresponding to the uplink data in the feedback information group is determined, the base station can jointly encode the feedback information corresponding to a plurality of uplink data in the feedback information group, thereby reducing the encoding overhead and improving the encoding gain; in addition, because the first load length is determined and the length of the feedback information group is the first load length, the determined first load length can be equal to the number of the feedback information corresponding to the uplink data as much as possible, so that the number of idle positions which are not mapped with the feedback information in the feedback information group can be reduced, the resources for transmitting the feedback information are reduced, the reliability for transmitting the feedback information is improved, and the system overhead is reduced.

On the basis of the embodiment shown in fig. 3, an embodiment of the present invention provides a method for receiving feedback information, referring to fig. 4, where the method includes:

step 401: UE sends uplink data to a base station;

the UE receives scheduling information sent by the base station in a first subframe, where the first subframe may be any subframe, and the scheduling information may include information such as a resource and a modulation and coding scheme used by the uplink data. And sending uplink data to the base station in the second subframe according to the scheduling information, wherein the number of subframes separated between the first subframe and the second subframe is integral multiple of a preset value. For example, assuming that the first subframe is subframe n and the preset value is 4, the second subframe may be subframe n +4 or subframe n +8, etc.

Step 402: the UE receives a feedback information group sent by the base station;

and the UE sends uplink data to the base station in the second subframe, and receives a feedback information group sent by the base station in the third subframe, wherein the feedback information group comprises feedback information corresponding to the uplink data. The number of the subframes which are separated from the third subframe and the second subframe is integral multiple of a preset value. For example, assuming that the second subframe is subframe n +4 and the preset value is 4, the third subframe may be subframe n +8 or subframe n +12, etc.

The UE determines a time-frequency resource used by the base station for sending a feedback information group according to the resource used by scheduling information of the uplink data; and then receiving the feedback information group sent by the base station on the determined time-frequency resource.

In the embodiment of the invention, the resources used by the scheduling information and the time-frequency resources used for sending the feedback information group are bound in advance; correspondingly, the UE acquires the time-frequency resource bound to the resource used for scheduling the scheduling information of the uplink data, and determines the acquired time-frequency resource as the time-frequency resource for transmitting the encoded feedback information group.

In the embodiment of the present invention, after receiving uplink data sent by a UE, a base station determines whether to send feedback information corresponding to the uplink data to the UE, and if it is determined that the feedback information corresponding to the uplink data is not sent to the UE, sends a notification message to the UE, where the notification message is used to notify the UE not to send the feedback information of the uplink data to the UE.

And the UE receives the notification message and judges that the base station does not send the feedback information corresponding to the uplink data according to the notification message.

When the UE determines that the base station does not send the feedback information corresponding to the uplink data, the UE does not receive the corresponding feedback information, and therefore, false detection is not caused.

Step 403: the UE determines a first load length corresponding to the feedback information group from a load length set, wherein the load length set comprises at least two load lengths;

wherein the UE may determine the first payload length in one of at least three ways, including:

firstly, the UE determines a first load length from a load length set according to an identifier of the first load length notified by a base station.

Specifically, a signaling sent by the base station is received, where the signaling carries an identifier of the first load length, the signaling includes layer 1 signaling and/or layer 2 signaling, and the first load length is determined from the load length set according to the identifier of the first load length.

The layer 1 signaling may be a physical downlink control channel, such as scheduling information for scheduling the uplink data. Specifically, the first payload length may be notified by a cyclic shift field of a demodulation reference signal in the scheduling information. The layer 2 signaling may specifically be media access signaling.

The load length set may be preset in the UE in advance, or may be configured to the UE through a high-level signaling by the base station.

Secondly, the UE determines the first load length from the load length set according to the self identification.

Specifically, the UE performs a modulo operation on its identifier according to the number of the load lengths included in the load length set to obtain a modulus, selects a load length having a position index that is the same as the modulus from the load length set, and uses the selected load length as the first load length.

For example, assuming that the load length set includes two load lengths, i.e., 4 and 6, and the UE identifier is 2, the UE identifier 2 is subjected to modulo operation to obtain a modulus 0 according to the number 2 of the load lengths included in the load length set, selects a load length 4 having a position index identical to the modulus 0 from the load length set, and takes the selected load length 4 as the first load length.

Thirdly, the UE determines the first payload length from the payload length set according to the index of the resource used by the scheduling information for scheduling the uplink data or the index of the resource used by the uplink data.

Specifically, the UE performs a modulo operation on an index of a resource used for scheduling the scheduling information of the uplink data according to the number of the load lengths included in the load length set to obtain a modulus, selects a load length having a position index that is the same as the modulus from the load length set, and takes the selected load length as the first load length. Or,

and the UE performs modular operation on the index of the resource used by the uplink data according to the number of the load lengths in the load length set to obtain a modulus, selects the load length with the position index same as the modulus from the load length set, and takes the selected load length as the first load length.

Step 404: the UE determines the position index of the feedback information corresponding to the uplink data in the feedback information group;

the UE may determine the position index of the feedback information corresponding to the uplink data in the feedback information group in at least one of the following four ways, including:

first, the UE obtains a position index of feedback information corresponding to the uplink data in a feedback information group, which is notified by the base station.

Specifically, the UE receives an RRC dedicated signaling sent by the base station, where the RRC dedicated signaling carries an identifier of a position index of feedback information corresponding to the uplink data in a feedback information group, and obtains a corresponding position index according to the identifier of the position index; and/or the presence of a gas in the gas,

and the UE receives scheduling information for scheduling the uplink data, wherein a demodulation reference signal cyclic shift field in the scheduling information carries the position index of feedback information corresponding to the uplink data in a feedback information group.

In the embodiment of the present invention, any field in the scheduling information may be used to carry the position index, and preferably, the demodulation reference signal cyclic shift field in the scheduling information may be used to carry the position index.

Wherein, the UE stores the corresponding relationship between the position index identifier and the position index in advance, and then the UE identifies the position index in the feedback information group according to the feedback information corresponding to the uplink data carried by the RRC dedicated signaling,

secondly, the UE determines the position index of the feedback information corresponding to the uplink data in the feedback information group according to the RNTI of the UE;

specifically, the UE performs modulo operation on its RNTI according to the first load length to obtain a modulus, and uses the obtained modulus as a position index of the feedback information corresponding to the uplink data in the feedback information group.

For example, if the RNTI of the UE is 8 and the first load length is 4, the UE performs a modulo operation on the RNTI thereof according to the first load length 4, that is, performs a modulo operation on 8 to obtain a modulus 0, and uses the obtained modulus 0 as a position index of the feedback information corresponding to the uplink data in the feedback information group.

Thirdly, the UE determines the position index of the feedback information corresponding to the uplink data in the feedback information group according to the index of the resource used by the uplink data;

specifically, the UE performs a modulo operation on the index of the resource used by the uplink data according to the first load length to obtain a modulus, and uses the obtained modulus as a position index of the feedback information corresponding to the uplink data in the feedback information group.

For example, if the index of the uplink data sent by the UE is 8 and the first payload length is 4, the UE performs a modulo operation on the index 8 of the uplink data sent by the UE according to the first payload length 4 to obtain a modulus 0, and uses the obtained modulus 0 as the position index of the feedback information corresponding to the uplink data in the feedback information group.

And fourthly, the UE determines the position index of the feedback information corresponding to the uplink data in the feedback information group according to the index of the resource used for scheduling the scheduling information of the uplink data.

Specifically, the UE performs a modulo operation on an index of a resource used for scheduling the scheduling information of the uplink data according to the first load length to obtain a modulus, and uses the obtained modulus as a position index of the feedback information corresponding to the uplink data in the feedback information group.

For example, assuming that the index of the resource used for scheduling the scheduling information of the uplink data is 10 and the first load length is 4, the UE performs modulo operation on the index of the resource used for scheduling the scheduling information of the uplink data being 10 according to the first load length 4 to obtain a modulus 0, and uses the obtained modulus 0 as the position index of the feedback information corresponding to the uplink data in the feedback information group.

Step 405: the UE decodes the feedback information group according to the first load length to obtain a decoded feedback information group;

step 406: and the UE acquires the feedback information corresponding to the uplink data from the decoded feedback information group according to the position index of the feedback information corresponding to the uplink data in the feedback information group.

In the embodiment of the invention, because the first load length corresponding to the feedback information group is determined from the load length set, and the position index of the feedback information corresponding to the uplink data in the feedback information group is determined, the base station can jointly encode the feedback information corresponding to a plurality of uplink data in the feedback information group, thereby reducing the encoding overhead and improving the encoding gain; in addition, because the first load length is determined, and the length of the feedback information group is the first load length, the determined first load length can be equal to the number of the feedback information corresponding to the uplink data as much as possible, so that the number of idle positions which are not mapped with the feedback information in the feedback information group can be reduced, the resources for transmitting the feedback information are reduced, the reliability for transmitting the feedback information is improved, and the system overhead is reduced; the UE determines the position index of the feedback information corresponding to the uplink data in the feedback information group according to the RNTI of the UE, the index of the resource used by the transmitted uplink data or the index of the resource used by the scheduling information for scheduling the uplink data, so that the base station does not need to inform the UE of the position index, the design can be simplified, and the system overhead can be further reduced.

Referring to fig. 5, an embodiment of the present invention provides a base station, including:

a receiving unit 501, configured to receive uplink data sent by a user equipment UE;

a determining unit 502, configured to determine a first load length, where the first load length is one of at least two load lengths in a load length set; determining a position index of feedback information corresponding to the uplink data received by the receiving unit 501 in a feedback information group, where the length of the feedback information group is the length of the first payload;

a processing unit 503, configured to map, according to the position index determined by the determining unit 502, the feedback information corresponding to the uplink data into the feedback information group; jointly encoding the feedback information group according to the first load length determined by the determining unit;

a sending unit 504, configured to send the feedback information group encoded by the processing unit 503.

A specific operation manner of the receiving unit 501 receiving uplink data transmitted by the UE may refer to the description of step 201 in the embodiment shown in fig. 2, and is not described in detail here.

A specific operation manner of the processing unit 503 mapping the feedback information corresponding to the uplink data to the feedback information group according to the position index determined by the determining unit 502 may refer to the description of step 204 in the embodiment shown in fig. 2, and is not described in detail here.

The specific operation manner of the sending unit 504 sending the feedback information group encoded by the processing unit 503 may refer to the description of step 205 in the embodiment shown in fig. 2, and is not described in detail here.

Wherein the determining unit 502 is specifically configured to determine the first load length by using at least one of the following manners, including:

The specific operation manner of determining the first load length by the determining unit 502 may refer to the description of step 202 in the embodiment shown in fig. 2, and is not described in detail here.

The determining unit 502 may select a load length greater than or equal to the number from the load length set according to the number of the feedback information corresponding to the received uplink data, and use the selected load length as the first load length.

Preferably, the determining unit 502 selects a minimum payload length from the payload lengths greater than or equal to the data, and takes the selected minimum payload length as the first payload length.

Preferably, the determining unit 502 may perform a modular operation on the identifier of each UE that needs to send feedback information from the number of the payload lengths included in the payload length set to obtain a modulus of each UE, and select the payload length with a position index of the modulus from the payload length set as the first payload length if the moduli of each UE are the same.

Preferably, the determining unit 502 may perform a modulus operation on the index of the resource used by each scheduling information for scheduling the uplink data according to the number of the load lengths included in the load length set, to obtain a modulus of each scheduling information, and if the modulus of each scheduling information is the same, select the load length with the position index of the modulus from the load length set as the first load length; or, according to the number of the load lengths included in the load length set, performing a modulus operation on the index of the resource used by each received uplink data to obtain a modulus of each uplink data, and if the modulus of each uplink data is the same, selecting the load length with the position index of the modulus from the load length set as the first load length.

Preferably, the sending unit 504 is further configured to notify the UE of the identifier of the first payload length, so that the UE obtains the first payload length according to the identifier of the first payload length.

Preferably, the sending unit 504 is further configured to send a signaling to the UE, where the signaling carries the identifier of the first payload length, and the signaling includes layer 1 signaling or layer 2 signaling.

Preferably, the determining unit 502 is specifically configured to determine the position index of the feedback information corresponding to the uplink data in the feedback information group by using at least one of the following manners, including:

The specific operation manner of determining, by the determining unit 502, the position index of the feedback information corresponding to the uplink data in the feedback information group may refer to the description of step 203 in the embodiment shown in fig. 2, and is not described in detail here.

Preferably, the determining unit 502 performs a modulo operation on the RNTI of the UE according to the first load length to obtain a modulus of the UE, and uses the modulus as a position index of feedback information corresponding to uplink data sent by the UE in the feedback information group.

Preferably, the determining unit 502 performs a modulo operation on the index of the resource used by the received uplink data according to the first load length to obtain a modulus corresponding to the received uplink data, and uses the modulus corresponding to the received uplink data as the position index of the feedback information corresponding to the received uplink data in the feedback information group.

Preferably, the sending unit 504 is further configured to notify the UE of the position index, so that the UE obtains the feedback information corresponding to the uplink data from the feedback information group according to the position index.

Preferably, the sending unit 504 is further configured to notify the UE of the position index by using at least one of the following manners, including:

Preferably, the determining unit 502 is further configured to determine, according to a resource used for scheduling information of the uplink data, a time-frequency resource used for sending the encoded feedback information group;

the sending unit 504 is configured to send the encoded feedback information group on the time-frequency resource determined by the determining unit.

Preferably, the base station may further include:

the judging unit is used for judging whether to send feedback information corresponding to the uplink data to the UE after receiving the uplink data sent by the UE;

the sending unit 504 is further configured to send a notification message to the UE if the result determined by the determining unit is that feedback information corresponding to the uplink data does not need to be fed back, where the notification message is used to notify the UE not to send the feedback information of the uplink data to the UE.

In the embodiment of the present invention, after the receiving unit 501 receives uplink data sent by the UE, the determining unit may first determine whether feedback information corresponding to the uplink data needs to be fed back.

If the result of the judgment of the judging unit is that the feedback information corresponding to the uplink data needs to be fed back, the determining unit 502 determines the first load length and determines the position index of the feedback information corresponding to the received uplink data in the feedback information group; the processing unit 502 maps the feedback information corresponding to the uplink data to a feedback information group according to the position index, and performs joint coding on the feedback information group according to the first load length; and, the transmitting unit 504 transmits the encoded feedback information group. If the result of the judgment of the judging unit is that the feedback information corresponding to the uplink data does not need to be fed back, the sending unit 504 sends a notification message to the UE to notify the UE not to send the feedback information corresponding to the uplink data to the UE.

The determining unit is specifically configured to determine whether feedback information corresponding to the uplink data needs to be fed back according to the number of the feedback information corresponding to the current uplink data.

If the number of the feedback information corresponding to the current uplink data is smaller than the threshold, for example, only feedback information of one or two UEs needs to be fed back, and the feedback information of each UE is 1 or 2 bits, the determining unit may determine not to feed back the feedback information corresponding to the uplink data; if the number of the feedback information corresponding to the current uplink data is greater than the threshold, the determining unit may determine to feed back the feedback information corresponding to the uplink data.

The determining unit determines whether to send the feedback information corresponding to the uplink data to the UE, so that the resource utilization rate is high, that is, when the feedback information needed to be fed back is very small, the above scheme of joint coding is not used, so that the resource overhead is saved, and the impact on the UE is small, that is, the UE can receive the notification without sending the feedback information, so that the UE does not receive the corresponding feedback information, and therefore, false detection is not caused.

Optionally, the determining unit may further determine whether feedback information corresponding to the uplink data needs to be fed back according to a downlink load condition in the current system, and specifically may determine according to a load of a control channel or a data channel, for example, if the load of the current control channel is heavy, so that there is no time-frequency resource or power resource to send the feedback information, even if the current feedback information is in a large amount, the feedback information may not be fed back. Of course, the determination may be made based on other information, which is not limited herein.

Referring to fig. 6, an embodiment of the present invention provides a user equipment, including:

a sending unit 601, configured to send uplink data to a base station;

a receiving unit 602, configured to receive a feedback information group sent by the base station;

a determining unit 603, configured to determine a first payload length corresponding to the feedback information group received by the receiving unit 602 from a payload length set, where the payload length set includes at least two payload lengths; determining a position index of feedback information corresponding to the uplink data sent by the sending unit 601 in the feedback information group;

a processing unit 604, configured to decode the feedback information group according to the first payload length determined by the determining unit 603, and obtain feedback information corresponding to the uplink data from the decoded feedback information group according to the position index determined by the determining unit.

The specific operation manner of the sending unit 601 sending uplink data to the base station may refer to the description of step 401 in the embodiment shown in fig. 4, and is not described in detail here.

The specific operation manner of the receiving unit 602 receiving the feedback information group sent by the base station may refer to the description of step 402 in the embodiment shown in fig. 4, and is not described in detail here.

Preferably, the determining unit 603 is specifically configured to determine the first payload length corresponding to the feedback information group from the payload length set by using at least one of the following manners, including:

The specific operation manner of the determining unit 603 determining the first payload length corresponding to the feedback information group from the payload length set may refer to the description of step 403 in the embodiment shown in fig. 4, and is not described in detail here.

The determining unit 603 performs a modulus operation on the identifier of the determining unit according to the number of the load lengths included in the load length set to obtain a modulus, selects a load length with a position index same as the modulus from the load length set, and uses the selected load length as the first load length.

The determining unit 603 performs a modulo operation on an index of a resource used for scheduling the scheduling information of the uplink data according to the number of the load lengths included in the load length set to obtain a modulus, selects a load length with a position index identical to the modulus from the load length set, and takes the selected load length as the first load length. Or, according to the number of the load lengths included in the load length set, performing a modulus operation on the index of the resource used by the uplink data to obtain a modulus, selecting a load length with a position index same as the modulus from the load length set, and taking the selected load length as the first load length.

Preferably, the determining unit 603 is configured to receive a signaling sent by the base station, where the signaling carries the identifier of the first payload length, and the signaling includes layer 1 signaling and/or layer 2 signaling; determining the first payload length from the set of payload lengths based on the identification of the first payload length.

Preferably, the determining unit 603 is specifically configured to determine the position index of the feedback information corresponding to the uplink data in the feedback information group by using at least one of the following manners, including:

A specific operation manner of determining, by the determining unit 603, the position index of the feedback information corresponding to the uplink data in the feedback information group may refer to the description of step 404 in the embodiment shown in fig. 4, and is not described in detail here.

The determining unit 603 performs a modulo operation on the RNTI of the determining unit according to the first load length to obtain a modulus, and uses the obtained modulus as a position index of the feedback information corresponding to the uplink data in the feedback information group.

The determining unit 603 performs a modulo operation on the index of the resource used by the uplink data according to the first load length to obtain a modulus, and uses the obtained modulus as a position index of the feedback information corresponding to the uplink data in the feedback information group.

Preferably, the determining unit 603 is specifically configured to obtain, by using at least one of the following manners, a position index of the feedback information corresponding to the uplink data notified by the base station in the feedback information group, and includes:

Preferably, the determining unit 603 is further configured to determine, according to a resource used for scheduling information of the uplink data, a time-frequency resource used for the base station to send the feedback information group;

the receiving unit 602 is configured to receive the feedback information group sent by the base station on the time-frequency resource determined by the determining unit.

Preferably, the receiving unit 602 is further configured to receive the notification message;

and, the user equipment further comprises:

a determining unit, configured to determine, according to the notification message received by the receiving unit 602, that the base station does not send the feedback information corresponding to the uplink data.

When the determining unit determines that the base station does not send the feedback information corresponding to the uplink data, the receiving unit 602 does not receive the corresponding feedback information, and therefore, false detection is not caused.

Referring to fig. 7, an embodiment of the present invention provides a base station, including:

a receiver 701, configured to receive uplink data sent by a user equipment UE;

a processor 702 configured to determine a first load length, wherein the first load length is one of at least two load lengths in a set of load lengths; determining a position index of feedback information corresponding to the uplink data received by the receiver 701 in a feedback information group, where the length of the feedback information group is the length of the first payload; mapping the feedback information corresponding to the uplink data to the feedback information group according to the position index; jointly encoding the feedback information group according to the first load length;

a transmitter 703, configured to transmit the feedback information group encoded by the processor 702.

The specific operation manner of the receiver 701 for receiving the uplink data transmitted by the UE may refer to the description of step 201 in the embodiment shown in fig. 2, and is not described in detail here.

The specific operation manner of the processor 702 mapping the feedback information corresponding to the uplink data to the feedback information group according to the position index may refer to the description of step 204 in the embodiment shown in fig. 2, and is not described in detail here.

The specific operation manner of the transmitter 703 for transmitting the encoded feedback information group may refer to the description of step 205 in the embodiment shown in fig. 2, and is not described in detail here.

Preferably, the processor 702 is specifically configured to determine the first payload length according to at least one of the following manners, including:

The specific operation of the processor 702 for determining the first payload length may refer to the description of step 202 in the embodiment shown in fig. 2, and will not be described in detail here.

The processor 702 may select a load length greater than or equal to the number from the load length set according to the number of the feedback information corresponding to the received uplink data, and use the selected load length as the first load length.

Preferably, the processor 702 selects a minimum payload length from the payload lengths greater than or equal to the data, and uses the selected minimum payload length as the first payload length.

Preferably, the processor 702 may perform a modulo operation on an identifier of each UE that needs to send feedback information from the number of the payload lengths included in the payload length set to obtain a modulus of each UE, and select the payload length with a position index of the modulus from the payload length set as the first payload length if the moduli of each UE are the same.

Preferably, the processor 702 may perform a modulus operation on the index of the resource used by each scheduling information for scheduling the uplink data according to the number of the load lengths included in the load length set, to obtain a modulus of each scheduling information, and if the moduli of each scheduling information are the same, select the load length whose position index is the modulus from the load length set as the first load length; or, according to the number of the load lengths included in the load length set, performing a modulus operation on the index of the resource used by each received uplink data to obtain a modulus of each uplink data, and if the modulus of each uplink data is the same, selecting the load length with the position index of the modulus from the load length set as the first load length.

Further, the transmitter 703 is further configured to notify the UE of the identifier of the first payload length, so that the UE obtains the first payload length according to the identifier of the first payload length.

Further, the transmitter 703 is further configured to send a signaling to the UE, where the signaling carries the identifier of the first payload length, and the signaling includes layer 1 signaling or layer 2 signaling.

Preferably, the processor 702 is specifically configured to determine the position index of the feedback information corresponding to the uplink data in the feedback information group by using at least one of the following manners, including:

The specific operation manner of the processor 702 determining the position index of the feedback information corresponding to the uplink data in the feedback information group may refer to the description of step 203 in the embodiment shown in fig. 2, and is not described in detail here.

Preferably, the processor 702 performs a modulo operation on the RNTI of the UE according to the first load length to obtain a modulus of the UE, and uses the modulus as a position index of feedback information corresponding to uplink data sent by the UE in a feedback information group.

Preferably, the processor 702 performs a modulo operation on an index of a resource used by the received uplink data according to the first load length to obtain a modulus corresponding to the received uplink data, and uses the modulus corresponding to the received uplink data as a position index of the feedback information corresponding to the received uplink data in the feedback information group.

Further, the transmitter 703 is further configured to notify the UE of the position index, so that the UE obtains the feedback information corresponding to the uplink data from the feedback information group according to the position index.

Further, the transmitter 703 is further configured to notify the UE of the position index by using at least one of the following manners, including:

Further, the processor 702 is further configured to determine, according to a resource used for scheduling the scheduling information of the uplink data, a time-frequency resource for transmitting the encoded feedback information group;

the transmitter 703 is configured to transmit the encoded feedback information group on the time-frequency resource determined by the processor.

Preferably, the processor 702 is further configured to determine, after receiving uplink data sent by the UE, whether to send feedback information corresponding to the uplink data to the UE;

the transmitter 703 is further configured to send a notification message to the UE if the result determined by the processor 702 is that feedback information corresponding to the uplink data does not need to be fed back, where the notification message is used to notify the UE not to send the feedback information of the uplink data to the UE.

In the embodiment of the present invention, after the receiver 701 receives uplink data sent by the UE, the processor 702 may first determine whether feedback information corresponding to the uplink data needs to be fed back.

If the result of the judgment of the processor 702 is that feedback information corresponding to the uplink data needs to be fed back, determining a first load length, and determining a position index of the received feedback information corresponding to the uplink data in a feedback information group; mapping feedback information corresponding to the uplink data to a feedback information group according to the position index, and performing joint coding on the feedback information group according to a first load length; and, the transmitter 703 transmits the encoded feedback information group. If the result of the judgment of the processor 702 is that feedback information corresponding to the uplink data does not need to be fed back, the transmitter 703 sends a notification message to the UE to notify the UE not to send the feedback information corresponding to the uplink data to the UE.

The processor 702 determines whether feedback information corresponding to the uplink data needs to be fed back according to the amount of the feedback information corresponding to the current uplink data.

If the number of the feedback information corresponding to the current uplink data is smaller than the threshold, for example, only feedback information of one or two UEs needs to be fed back, and the feedback information of each UE is 1 or 2 bits, the processor 702 may determine not to feed back the feedback information corresponding to the uplink data; if the amount of the feedback information corresponding to the current uplink data is greater than the threshold, the processor 702 may determine to feed back the feedback information corresponding to the uplink data.

The processor 702 determines whether to send the feedback information corresponding to the uplink data to the UE, so that the resource utilization rate is high, that is, when the feedback information needed to be fed back is very little, the above-mentioned scheme of joint coding is not used, so that the resource overhead is saved, and the impact on the UE is small, that is, the UE can receive the notification without sending the feedback information, so that the UE does not receive the corresponding feedback information, and therefore, false detection is not caused.

Optionally, the processor 702 may further determine whether feedback information corresponding to the uplink data needs to be fed back according to a downlink load condition in the current system, and specifically may determine according to a load of a control channel or a data channel, for example, if the load of the current control channel is heavy, so that there is no time-frequency resource or power resource to send the feedback information, even if the current feedback information is in a large amount, the feedback information may not be fed back. Of course, the determination may be made based on other information, which is not limited herein.

Referring to fig. 8, an embodiment of the present invention provides a user equipment, including:

a transmitter 801 configured to transmit uplink data to a base station;

a receiver 802, configured to receive a feedback information group sent by the base station;

a processor 803, configured to determine a first payload length corresponding to the feedback information group received by the receiver 802 from a payload length set, where the payload length set includes at least two payload lengths; determining a position index of feedback information corresponding to the uplink data sent by the sender 801 in the feedback information group; and decoding the feedback information group according to the first load length, and acquiring feedback information corresponding to the uplink data from the decoded feedback information group according to the position index.

The specific operation manner of the transmitter 801 transmitting the uplink data to the base station may refer to the description of step 401 in the embodiment shown in fig. 4, and is not described in detail here.

The specific operation manner of the receiver 802 for receiving the feedback information group sent by the base station may refer to the description of step 402 in the embodiment shown in fig. 4, and is not described in detail here.

Preferably, the processor 803 is specifically configured to determine the first payload length corresponding to the feedback information group from the payload length set by using at least one of the following manners, including:

The specific operation manner of the processor 803 for determining the first payload length corresponding to the feedback information group from the payload length set may refer to the description of step 403 in the embodiment shown in fig. 4, and is not described in detail here.

The processor 803 performs a modulus operation on the identifier of the processor according to the number of the payload lengths included in the payload length set to obtain a modulus, selects a payload length with a position index same as the modulus from the payload length set, and takes the selected payload length as a first payload length.

The processor 803 performs a modulo operation on the index of the resource used for scheduling the scheduling information of the uplink data according to the number of the payload lengths included in the payload length set to obtain a modulus, selects a payload length with a position index that is the same as the modulus from the payload length set, and takes the selected payload length as the first payload length. Or, according to the number of the load lengths included in the load length set, performing a modulus operation on the index of the resource used by the uplink data to obtain a modulus, selecting a load length with a position index same as the modulus from the load length set, and taking the selected load length as the first load length.

Preferably, the processor 803 is configured to receive a signaling sent by the base station, where the signaling carries an identifier of the first payload length, and the signaling includes layer 1 signaling and/or layer 2 signaling; determining the first payload length from the set of payload lengths based on the identification of the first payload length.

Preferably, the processor 803 is specifically configured to determine the position index of the feedback information corresponding to the uplink data in the feedback information group by using at least one of the following manners, including:

Preferably, the processor 803 is specifically configured to obtain, by using at least one of the following manners, a position index of the feedback information corresponding to the uplink data notified by the base station in the feedback information group, where the position index includes:

The specific operation manner of the processor 803 for determining the position index of the feedback information corresponding to the uplink data in the feedback information group may refer to the description of step 404 in the embodiment shown in fig. 4, and is not described in detail here.

The processor 803 performs a modulo operation on the RNTI thereof according to the first load length to obtain a modulus, and uses the obtained modulus as a position index of the feedback information corresponding to the uplink data in the feedback information group.

The processor 803 performs a modulo operation on the index of the resource used by the uplink data according to the first load length to obtain a modulus, and uses the obtained modulus as a position index of the feedback information corresponding to the uplink data in the feedback information group.

Further, the processor 803 is further configured to determine, according to a resource used for scheduling information of the uplink data, a time-frequency resource used for the base station to send the feedback information group;

the receiver 802 is configured to receive the feedback information group sent by the base station on the time-frequency resource determined by the processor 803.

Preferably, the receiver 802 is further configured to receive the notification message;

the processor 802 is further configured to determine, according to the notification message received by the receiver 802, that the base station does not send feedback information corresponding to the uplink data.

When the determining unit determines that the base station does not send the feedback information corresponding to the uplink data, the receiver 802 does not receive the corresponding feedback information, and therefore, false detection is not caused.

It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A method for transmitting feedback information, comprising:

receiving uplink data sent by User Equipment (UE);

and sending the coded feedback information group.

2. The method of claim 1, wherein determining the first load length comprises at least one of:

3. The method of claim 1 or 2, wherein after determining the first load length, further comprising:

4. The method of claim 3, wherein the informing the UE of the first payload length comprises:

5. The method according to any one of claims 1 to 4, wherein the determining the position index of the feedback information corresponding to the uplink data in the feedback information group includes at least one of the following manners:

6. The method according to any one of claims 1 to 5, wherein after determining the position index of the feedback information corresponding to the uplink data in the feedback information group, the method further includes:

7. The method of claim 6, wherein the notifying the UE of the location index comprises at least one of:

8. The method of any of claims 1-7, wherein prior to said transmitting said encoded set of feedback information, further comprising:

the sending the encoded feedback information group includes:

9. A method of receiving feedback information, comprising:

transmitting uplink data to a base station;

receiving a feedback information group sent by the base station;

10. The method of claim 9, wherein the determining the first payload length corresponding to the feedback information group from the set of payload lengths comprises at least one of:

11. The method of claim 10, wherein the determining the first payload length from the set of payload lengths based on the identity of the first payload length signaled by the base station comprises:

12. The method according to any one of claims 9 to 11, wherein the determining the position index of the feedback information corresponding to the uplink data in the feedback information group includes at least one of:

13. The method of claim 12, wherein the obtaining of the position index of the feedback information corresponding to the uplink data notified by the base station in the feedback information group comprises at least one of:

14. The method of any of claims 9-13, wherein prior to receiving the set of feedback information transmitted by the base station, further comprising:

the receiving the feedback information group sent by the base station includes:

15. A base station, comprising:

16. The base station of claim 15,

17. The base station of claim 15 or 16,

18. The base station of claim 17,

19. The base station of any of claims 15-18,

20. The base station of any of claims 15-19,

21. The base station of claim 20,

22. The base station of any of claims 15-21,

23. A user device, comprising:

a sending unit, configured to send uplink data to a base station;

24. The user equipment of claim 23,

25. The user equipment of claim 24,

26. The user equipment of any one of claims 23-25,

27. The user equipment of claim 26,

28. The user equipment of any one of claims 23-27,

29. A base station, comprising:

the receiver is used for receiving uplink data sent by User Equipment (UE);

30. The base station of claim 29,

the processor is specifically configured to determine the first payload length according to at least one of the following ways, including:

31. The base station of claim 29 or 30,

32. The base station of claim 31,

33. The base station of any of claims 29-32,

34. The base station according to any of claims 29-33,

35. The base station of claim 34,

36. The base station of any of claims 29-35,

37. A user device, comprising:

a transmitter for transmitting uplink data to a base station;

38. The user equipment of claim 37,

39. The user equipment of claim 38,

40. The user equipment of any one of claims 37-39,

41. The user equipment of claim 40,

42. The user equipment of any of claims 37-41,