WO2013010472A1

WO2013010472A1 - Feedback information transmission method and device

Info

Publication number: WO2013010472A1
Application number: PCT/CN2012/078707
Authority: WO
Inventors: 林亚男; 沈祖康; 高雪娟
Original assignee: 电信科学技术研究院
Priority date: 2011-07-19
Filing date: 2012-07-16
Publication date: 2013-01-24
Also published as: CN102255708A

Abstract

Disclosed are a feedback information transmission method and device, used for making user equipment (UE) effectively judge the loss scenario of downlink dynamic scheduling signalling and in turn feed back more accurate acknowledgement (ACK)/non-acknowledgement (NACK) feedback information, and capable of reducing the number of bits occupied by the ACK/NACK feedback information on each carrier to ensure the demodulation performance of uplink transmission.The method includes: UE receiving downlink dynamic scheduling signalling, including specific indication information used for indicating whether or not the downlink dynamic scheduling signalling is the last downlink dynamic scheduling signalling corresponding to an identical carrier within the feedback window where the downlink dynamic scheduling signalling is located, wherein the feedback window refers to one or more downlink sub-frames using an identical uplink sub-frame to send feedback information;and the UE determining the feedback information corresponding to the feedback window on the carrier corresponding to the downlink dynamic scheduling signalling according to the downlink dynamic scheduling signalling received in an identical feedback window, and sending the feedback information.

Description

Method and device for transmitting feedback information This application claims priority to Chinese patent application filed on July 19, 2011, the Chinese Patent Office, Application No. 201110202336.2, entitled "Transmission Method and Device for Feedback Information" The entire content of which is incorporated herein by reference. Technical field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for transmitting feedback information. Background technique

Version 10 (Rel-10) acknowledgment (ACK), acknowledgment (NACK), and non-acknowledgement (NACK) feedback information are combined to solve the problem of inaccurate feedback information caused by downlink dynamic scheduling signaling loss. Each carrier is required to feed back 2 bits of combined feedback information. For the carrier aggregation (CA) system of the 5-carrier aggregation of Rel-11, if the combined processing scheme of feedback information of Rel-10 is used, 10 bits of information should be fed back, which will seriously affect the uplink physical uplink control. Channel (Physical Uplink Control Channel, PUCCH) transmission performance.

The following describes the carrier aggregation technology.

In Long Term Evolution (LTE) and previous wireless communication systems, there is only one carrier in one cell, and the maximum bandwidth in the LTE system is 20 MHz, as shown in Figure 1, in the advanced long-term evolution upgrade (LTE Advanced, In the LTE-A system, the peak rate of the system is greatly improved compared to the LTE system, and it is required to achieve downlink 1 Gbps and uplink 500 Mbps. If only one carrier with a maximum bandwidth of 20MHz is used, the peak rate requirement cannot be reached. Therefore, the LTE-A system needs to expand the bandwidth that the terminal can use, thereby introducing the CA technology, that is, a plurality of consecutive or discontinuous carriers under the same base station (eNB) are aggregated together, and is also a user equipment (User Equipment, UE) service to provide the required rate. These aggregated carriers are also called component carriers (cells). Each cell can be a member carrier, and cells (member carriers) under different eNBs cannot be aggregated. In order to ensure that the UE of LTE can work under each aggregated carrier, each carrier does not exceed 20 MHz at most. The CA technology of the LTE-A system is shown in Figure 2. The base station of the LTE-A system has four carriers that can be aggregated. The base station can perform data transmission with the UE on the four carriers at the same time to improve system throughput.

The transmission of Time Division Duplex (TDD) ACK/NACK feedback information in the LTE system is as follows:

For the LTE TDD system, the UE may feed back ACK/NACK feedback information corresponding to multiple downlink subframes in one uplink subframe, that is, after the UE demodulates and decodes the data on the downlink subframe "-, The uplink subframe will be fed back to the base station whether the number of downlink subframes needs to be retransmitted (ie, ACK/NACK feedback signal) The value of the ke K , K - set is related to the system's uplink and downlink configuration and the specific subframe number, as shown in Table 1 below. The one or more downlink subframes that use the same uplink subframe to send ACK/NACK feedback information are referred to as a “feedback window”.

In this case, a plurality of radio frames sequentially arranged, i.e., if the wireless frame "in the last subframe of the radio frame" ^{+ 1} in a first subframe as a radio frame in a table an example is given of each uplink sub The case corresponding to the frame, where n - k < 0, represents the downlink subframe in the previous radio frame.

The LTE system supports multiple ACK/NACK feedback schemes. The feedback schemes can be mainly divided into two categories: combined feedback and multi-bit multiplexing feedback.

The implementation manner of the multi-bit multiplexing feedback includes: a channel selection scheme based on PUCCH format lb and a multiplexing transmission scheme based on PUCCH format 3. In the multi-bit multiplexing feedback, the ACK/NACK feedback information can be sufficiently transmitted, so that the downlink transmission efficiency is high. However, since the number of ACK/NACK feedback information bits transmitted by the UE in one uplink feedback is large, the uplink transmission performance is poor.

In contrast, the UE combines the ACK/NACK feedback information corresponding to multiple downlink data packets, compresses the information to be fed back, and uses the PUCCH to transmit a small amount of information, so that the uplink transmission performance is relatively reliable. Therefore, UEs with poor conditions for uplink transmission channels need to use a combined feedback scheme.

In addition, since the channel time domain correlation is strong and the correlation of different frequency bands is weak, when ACK/NACK feedback information is combined, better time domain combining should be considered, that is, corresponding to downlink subframes on the same carrier. The ACK/NACK feedback information is merged.

In the LTE Rel-10 ACK/NACK merging scheme, it is only applicable to the scenario of 2-carrier aggregation. Each carrier feeds back 2-bit merge information and transmits up to 4-bit merge information. However, the number of aggregated carriers in Rel-11 and subsequent versions will increase to 5 or more. If the Rel-10 combination scheme is used, the UE will also feed back 10 bits or more of information. Transmission performance cannot be guaranteed.

In the Rel-10 ACK/NACK merging scheme, the reason why the 2-bit information is to be fed back in each carrier is because the UE cannot judge whether the data packet sent by the base station is received, and the UE needs to feed back the number of correctly received subframes, so it is required Take up 2 bits of feedback. The Downlink Assignment Index (DAI) information that has been used in the Rel-8 TDD system assists the UE in determining the downlink dynamic scheduling signaling loss, but the last downlink dynamic scheduling signal sent by the network side in the feedback window. In the case of whether or not it is lost, no judgment method is given. If the base station sends four downlink dynamic scheduling signalings in the feedback window, the UE correctly receives the first three downlink dynamic scheduling signalings, and the last downlink dynamic scheduling signaling is lost, the UE cannot determine that the downlink dynamic scheduling signaling is lost. , and the ACK information is fed back to the base station. After receiving the ACK information, the base station does not retransmit the data, and the fourth downlink dynamic scheduling signal is lost, which will affect the downlink data transmission performance.

In summary, the Rel-10 ACK/NACK feedback information combining scheme in the prior art solves the problem of inaccurate feedback information caused by downlink dynamic scheduling signaling loss, and requires each carrier to feed back 2-bit merge information. However, for the Rel-11 5 carrier aggregation system, the 10-bit information is also fed back after using the Rel-10 combining method, which will seriously affect the uplink PUCCH transmission performance, and the last downlink dynamic scheduling sent by the network side in the feedback window. In the case that the signaling is lost, the prior art does not provide a determination scheme. Therefore, the prior art cannot effectively determine the loss of the downlink dynamic scheduling signaling. Summary of the invention

The embodiment of the invention provides a method and a device for transmitting feedback information, so that the UE can effectively determine the loss of the downlink dynamic scheduling signaling, and then feed back more accurate ACK/NACK feedback information, and can reduce each carrier. The number of bits occupied by the ACK/NACK feedback information on the upper to ensure the demodulation performance of the uplink transmission.

A method for sending feedback information provided by an embodiment of the present invention includes:

The user equipment UE receives the downlink dynamic scheduling signaling, and includes specific indication information used to indicate whether the downlink dynamic scheduling signaling is the last downlink dynamic scheduling signaling corresponding to the same carrier in the feedback window where the downlink dynamic scheduling signaling is located. The feedback window refers to one or more downlink subframes that use the same uplink subframe to send feedback information.

The UE determines, according to the downlink dynamic scheduling signaling received in the same feedback window, the feedback information corresponding to the feedback window on the carrier corresponding to the downlink dynamic scheduling signaling, and sends the feedback information.

A method for obtaining feedback information provided by an embodiment of the present invention includes:

And transmitting, by the base station, the downlink dynamic scheduling signaling to the user equipment UE, where the base station is configured to indicate whether the downlink dynamic scheduling signaling is the last downlink dynamic scheduling signal corresponding to the same carrier in the feedback window where the downlink dynamic scheduling signaling is located. The specific indication information of the command, the feedback window refers to one or more downlink subframes corresponding to the same uplink subframe used for transmitting the feedback information; The base station receives feedback information corresponding to the feedback window sent by the UE.

A device for transmitting feedback information provided by an embodiment of the present invention includes:

The downlink dynamic scheduling signaling receiving unit is configured to receive the downlink dynamic scheduling signaling, where the method includes: indicating, by the downlink dynamic scheduling signaling, whether the downlink dynamic scheduling signaling is the last downlink dynamic scheduling signal corresponding to the same carrier in the feedback window where the downlink dynamic scheduling signaling is located The specific indication information of the command, the feedback window refers to one or more downlink subframes that use the same uplink subframe to send feedback information;

The feedback information determining unit is configured to determine, according to the downlink dynamic scheduling signaling received in the same feedback window, feedback information corresponding to the feedback window on the carrier corresponding to the downlink dynamic scheduling signaling, and send the feedback information.

An apparatus for acquiring feedback information provided by an embodiment of the present invention includes:

The downlink dynamic scheduling signaling sending unit is configured to send downlink dynamic scheduling signaling to the user equipment UE in the feedback window, where the method is configured to indicate whether the downlink dynamic scheduling signaling is in a feedback window of the downlink dynamic scheduling signaling Specific indication information of the last downlink dynamic scheduling signaling of the same carrier, where the feedback window refers to one or more downlink subframes corresponding to the same uplink subframe used for transmitting feedback information;

The feedback information receiving unit is configured to receive feedback information corresponding to the feedback window sent by the UE.

In the embodiment of the present invention, the user equipment UE receives the downlink dynamic scheduling signaling, which is used to indicate whether the downlink dynamic scheduling signaling is the last downlink dynamic scheduling signaling corresponding to the same carrier in the feedback window where the downlink dynamic scheduling signaling is located. Specific feedback information, the feedback window refers to one or more downlink subframes that use the same uplink subframe to send feedback information; the UE determines the downlink dynamic scheduling signal according to the downlink dynamic scheduling signaling received in the same feedback window. The feedback information corresponding to the feedback window is sent on the corresponding carrier, and the feedback information is sent, so that the UE can effectively determine the loss of the downlink dynamic scheduling signaling according to the specific indication information, and feedback a more accurate ACK/NACK. The feedback information is sent to the network side, and the number of bits occupied by the ACK/NACK feedback information on each carrier can be reduced to ensure the demodulation performance of the uplink transmission. DRAWINGS

1 is a schematic diagram of carrier distribution of an LTE cell in the prior art;

2 is a schematic diagram of a CA of LTE-A in the prior art;

FIG. 3 is a schematic flowchart of a method for sending feedback information according to an embodiment of the present disclosure;

FIG. 4 is a schematic flowchart diagram of a method for acquiring feedback information according to an embodiment of the present disclosure;

FIG. 5 is a schematic diagram of the last downlink dynamic scheduling signaling loss in the feedback window according to the embodiment of the present invention; FIG. 6 is a schematic diagram of the intermediate downlink dynamic scheduling signaling loss in the feedback window according to the embodiment of the present invention; A schematic structural diagram of a sending device for providing feedback information provided by an embodiment;

FIG. 8 is a schematic structural diagram of an apparatus for acquiring feedback information according to an embodiment of the present invention. detailed description

The technical solutions provided by the embodiments of the present invention are described below with reference to the accompanying drawings.

On the terminal side, referring to FIG. 3, a method for sending feedback information according to an embodiment of the present invention includes the following steps:

The UE receives the downlink dynamic scheduling signaling, where the UE includes the specific indication information that is used to indicate whether the downlink dynamic scheduling signaling is the last downlink dynamic scheduling signaling corresponding to the same carrier in the feedback window where the downlink dynamic scheduling signaling is located. The feedback window refers to one or more downlink subframes that use the same uplink subframe to send feedback information.

The feedback window in the embodiment of the present invention refers to one or more downlink subframes that use the same uplink subframe to send feedback information.

The downlink dynamic scheduling signaling in the embodiment of the present invention may be, for example, signaling for scheduling Dynamic Downlink Shared Channel (PDSCH) transmission, or scheduling for semi-static (SPS) resource release. Signaling and so on.

The carrier corresponding to the downlink dynamic scheduling signaling in the embodiment of the present invention may be a carrier that transmits the downlink dynamic scheduling signaling, or may be another carrier. For example, for the case of cross-carrier scheduling, the carrier corresponding to the downlink dynamic scheduling signaling is the carrier indicated by the carrier indication field (CIF) in the downlink dynamic scheduling signaling; and for the case of non-cross-carrier scheduling, the downlink dynamics The carrier corresponding to the scheduling signaling is a carrier that transmits the downlink dynamic scheduling signaling.

For example, in the case of the cross-carrier scheduling, if the UE receives the downlink dynamic scheduling signaling from the first carrier, and the carrier indicated by the CIF in the downlink dynamic scheduling signaling is the second carrier, the downlink dynamic scheduling signaling includes The specific indication information is used to indicate whether the downlink dynamic scheduling signaling is the last downlink dynamic scheduling signaling in the downlink dynamic scheduling signaling corresponding to the second carrier in the feedback window where the downlink dynamic scheduling signaling is located.

For example, in the case of non-cross-carrier scheduling, if the UE receives the downlink dynamic scheduling signaling from the first carrier, the specific indication information included in the downlink dynamic scheduling signaling is used to indicate whether the downlink dynamic scheduling signaling is the The last downlink dynamic scheduling signaling in the downlink dynamic scheduling signaling corresponding to the first carrier in the feedback window where the downlink dynamic scheduling signaling is located.

That is, the UE receives the downlink dynamic scheduling signaling (DL grant), and according to the specific indication information in the DL grant, it can be determined whether the current scheduling is the last downlink dynamic scheduling of the same carrier in the feedback window where the downlink dynamic scheduling signaling is located. .

5102. The UE determines, according to the downlink dynamic scheduling signaling received in the same feedback window, feedback information corresponding to the feedback window on the carrier corresponding to the downlink dynamic scheduling signaling, and sends the feedback information. Preferably, the feedback information is generated based on carrier combining, and the feedback information is 1-bit feedback information. At this time, the UE determines downlink dynamic scheduling according to downlink dynamic scheduling signaling received in the same feedback window. The feedback information corresponding to the feedback window on the carrier corresponding to the signaling includes:

The UE determines, according to the downlink dynamic scheduling signaling received in the same feedback window, whether there is downlink dynamic scheduling signaling loss in the feedback window on the carrier corresponding to the downlink dynamic scheduling signaling, and if yes, determining the feedback window on the carrier. The corresponding feedback information is non-acknowledgment (NACK) feedback information or discontinuous transmission (DTX) information; otherwise,

Determining whether there is a transmission block (TB) decoding failure in the feedback window on the carrier, and if yes, determining that the feedback information corresponding to the feedback window on the carrier is NACK feedback information; otherwise, determining the corresponding feedback window on the carrier The feedback information is ACK feedback information.

That is, for the downlink multi-codeword transmission mode, in order to compress the feedback overhead, the ACK/NACK information corresponding to all the TBs in the carrier is combined, or the ACK/NACK information corresponding to different TBs in the same subframe is first spatially combined. That is, as long as one TB in the same subframe cannot be correctly decoded, the feedback information corresponding to the subframe is NACK information, and then the ACK/NACK information of each spatially merged subframe is subjected to the foregoing combining processing.

Or, for the downlink multi-codeword transmission mode, the feedback information is generated based on the combination of codewords, and the feedback information is N-bit feedback information, where N is a positive integer, and the value of N is a pre-configured codeword. Equal in number;

At this time, the UE determines, according to the downlink dynamic scheduling signaling received in the same feedback window, the feedback information corresponding to the feedback window on the carrier corresponding to the downlink dynamic scheduling signaling, including:

The UE determines, according to the downlink dynamic scheduling signaling received in the same feedback window, whether there is downlink dynamic scheduling signaling loss in the feedback window on the carrier corresponding to the downlink dynamic scheduling signaling, and if yes, determining the feedback window on the carrier. The corresponding N-bit feedback information is NACK feedback information or DTX information; otherwise,

Determining whether the transmission block TB with the codeword number n in the feedback window fails to be decoded, and if yes, determining that the nth bit feedback information corresponding to the feedback window on the carrier is NACK feedback information; otherwise, determining the carrier The nth bit feedback information corresponding to the feedback window is ACK feedback information, where n is a positive integer, and "≤.

Preferably, when the UE receives the downlink dynamic scheduling signaling released by the SPS resource in the feedback window, if all the TBIs in the feedback window (that is, the transmission block numbered 1 of the codeword) are decoded correctly, the downlink is performed. The first bit feedback information of the feedback information corresponding to the feedback window on the carrier corresponding to the dynamic scheduling signaling is ACK feedback information.

Preferably, the UE determines, according to the downlink dynamic scheduling signaling received in the same feedback window, whether there is downlink dynamic scheduling signaling loss in the feedback window on the carrier corresponding to the downlink dynamic scheduling signaling, including:

Determining, by the UE, whether the downlink dynamic scheduling signaling is lost in the feedback window on the carrier corresponding to the downlink dynamic scheduling signaling, according to the specific indication information in the last downlink dynamic scheduling signaling received in the feedback window; or

Determining, by the downlink allocation indication (DAI) information in the last downlink dynamic scheduling signaling received in the feedback window, whether the UE has a downlink dynamic scheduling signal in the feedback window on the carrier corresponding to the downlink dynamic scheduling signaling Let it be lost.

That is, the UE may determine, according to the DAI information in the DL grant, that the current scheduling is the first downlink dynamic scheduling in the feedback window on the carrier corresponding to the DL grant.

Preferably, the UE determines, according to the specific indication information in the last downlink dynamic scheduling signaling received in the feedback window, whether there is downlink dynamic scheduling signaling in the feedback window on the carrier corresponding to the downlink dynamic scheduling signaling. Lost, including:

When the UE receives the specific indication information in the last downlink dynamic scheduling signaling in the feedback window, the downlink dynamic scheduling signaling is not the same carrier that is sent by the network side in the feedback window where the downlink dynamic scheduling signaling is located. When the last downlink dynamic scheduling signaling in the downlink dynamic scheduling signaling is determined, the downlink dynamic scheduling signaling loss in the feedback window on the carrier corresponding to the downlink dynamic scheduling signaling is determined.

Preferably, the UE determines, according to the DAI information in the last downlink dynamic scheduling signaling received in the feedback window, whether there is downlink dynamics in the feedback window of the carrier corresponding to the last downlink dynamic scheduling signaling. Scheduling signaling loss, including:

The total number of downlink dynamic scheduling signalings that are received by the same downlink carrier dynamic scheduling signaling in the feedback window is smaller than the network side indicated by the DAI information in the last downlink dynamic scheduling signaling. When the total number of downlink dynamic scheduling signaling corresponding to the same downlink dynamic scheduling signaling sent by the feedback window is determined, the downlink dynamic scheduling in the feedback window on the carrier corresponding to the last downlink dynamic scheduling signaling is determined. Signaling is lost.

Correspondingly, on the network side, referring to FIG. 4, a method for obtaining feedback information according to an embodiment of the present invention includes the following steps:

The base station sends the downlink dynamic scheduling signaling to the user equipment UE in the feedback window, where the base station is configured to indicate whether the downlink dynamic scheduling signaling is the last downlink dynamic corresponding to the same carrier in the feedback window where the downlink dynamic scheduling signaling is located. The specific indication information of the scheduling signaling, where the feedback window refers to one or more downlink subframes corresponding to the same uplink subframe used for transmitting the feedback information.

S202. The base station receives the feedback information corresponding to the feedback window sent by the UE.

Preferably, the feedback information is: ACK feedback information, or NACK feedback information, or DTX information.

If the feedback information corresponding to the feedback window sent by the UE is 1-bit feedback information, the feedback information is ACK feedback information, NACK feedback information, or DTX information. For example, the indication bit occupied by the feedback information indicates that the ACK feedback information is 1 and the NACK feedback information is indicated by 0, and the DTX information is indicated by null.

If the feedback information corresponding to the feedback window sent by the UE is N-bit feedback information, where N is a positive integer, and the value of N is equal to the number of pre-configured codewords, the feedback information includes the same The feedback information corresponding to the transmission block of the codeword number, and the feedback information may be ACK feedback information, NACK feedback information or DTX information. For example, the feedback information corresponding to the transport block with the codeword number n is the nth bit feedback information in the feedback information corresponding to the feedback window. Therefore, the feedback information corresponding to the feedback window is ACK feedback information, NACK feedback information, or DTX information.

In summary, the technical solution provided by the foregoing embodiments of the present invention may be applicable to a carrier aggregation system, and may also be applicable to other non-carrier aggregation systems. When the UE is configured for ACK/NACK time domain merging, each carrier is configured. The ACK/NACK information in the same feedback window is combined, and the specific combining process may be based on a carrier or a codeword. If the carrier is based, the feedback information corresponding to the same feedback window corresponding to each carrier is 1 bit of feedback information. If the codeword is based, the feedback information corresponding to the same feedback window corresponding to each carrier is N-bit feedback information, where N is a positive integer, and the value of N is equal to the number of pre-configured codewords.

A specific judgment scheme for downlink dynamic scheduling signaling loss, for example:

If the specific indication information in the DL grant corresponding to the last downlink dynamic scheduling signaling received by the UE in the feedback window indicates that the current scheduling is not the last downlink dynamic scheduling in the feedback window on the carrier corresponding to the DL grant, the UE may It is determined that there is downlink dynamic scheduling signaling loss.

Assuming that the specific indication information is 0, the downlink dynamic scheduling signaling in which the specific indication information is located is not the last downlink dynamic scheduling signaling in the downlink dynamic scheduling signaling corresponding to the same carrier in the feedback window where the downlink dynamic scheduling signaling is located; If the specific indication information is 1, the downlink dynamic scheduling signaling where the specific indication information is located is the last downlink dynamic scheduling signaling corresponding to the same carrier in the feedback window where the downlink dynamic scheduling signaling is located. As shown in FIG. 5, the UE receives the specific indication information in the last downlink dynamic scheduling signaling in the second subframe (downlink subframe 2) in the feedback window, and the UE determines that there is at least one downlink dynamic scheduling signal. Let it be lost.

If the UE finds that the total number of dynamic scheduling data packets corresponding to the same carrier in the feedback window is smaller than the value indicated by D AI in the DL grant in the last subframe received in the feedback window, the UE may determine that there is downlink dynamic scheduling signaling. Lost.

Assume that the value of the DAI information is 0, indicating that the downlink dynamic scheduling signaling where the DAI information is located is the first downlink dynamic scheduling signaling in the feedback window; the value of the DAI information is 1, indicating the downlink dynamic of the DAI information. The scheduling signaling is the second downlink dynamic scheduling signaling in the feedback window. The value of the DAI information is 2, indicating the downlink dynamic scheduling signaling where the DAI information is located, which is the third downlink dynamic scheduling in the feedback window. Signaling, and so on. As shown in FIG. 6, the UE receives data in a third subframe (downlink subframe 3) in the feedback window, where DAI information in the downlink dynamic scheduling signaling indicates that the downlink dynamic scheduling signaling is in the feedback window. The third downlink dynamic scheduling signaling, but the UE only receives the data packets in the first subframe and the third subframe, and determines that the downlink dynamic scheduling signaling is lost.

Preferably, the specific indication information and the DAI information in the embodiment of the present invention are independently configured on each carrier.

On the terminal side, referring to FIG. 7, a device for transmitting feedback information according to an embodiment of the present invention includes: a downlink dynamic scheduling signaling receiving unit 11 configured to receive downlink dynamic scheduling signaling, where Whether the dynamic scheduling signaling is the specific indication information of the last downlink dynamic scheduling signaling corresponding to the same carrier in the feedback window of the downlink dynamic scheduling signaling, where the feedback window refers to sending the feedback information by using the same uplink subframe. One or more downlink subframes;

The feedback information determining unit 12 is configured to determine, according to the downlink dynamic scheduling signaling received in the same feedback window, feedback information corresponding to the feedback window on the carrier corresponding to the downlink dynamic scheduling signaling, and send the feedback information.

Preferably, the feedback information is 1-bit feedback information;

The feedback information determining unit 12 is configured to determine, according to the downlink dynamic scheduling signaling received in the same feedback window, whether there is downlink dynamic scheduling signaling loss in the feedback window on the carrier corresponding to the downlink dynamic scheduling signaling, if And determining, that the feedback information corresponding to the feedback window on the carrier is NACK feedback information or DTX information; otherwise,

The feedback information determining unit determines whether there is a transmission block TB decoding failure in the feedback window on the carrier, and if yes, determining that the feedback information corresponding to the feedback window on the carrier is NACK feedback information; otherwise, determining the carrier The feedback information corresponding to the feedback window is ACK feedback information.

Or, the feedback information is N-bit feedback information, where N is a positive integer, and the value of N is equal to the number of pre-configured codewords;

The feedback information determining unit 12 is configured to determine, according to the downlink dynamic scheduling signaling received in the same feedback window, whether there is downlink dynamic scheduling signaling loss in the feedback window on the carrier corresponding to the downlink dynamic scheduling signaling, if And determining that the N-bit feedback information corresponding to the feedback window on the carrier is NACK feedback information or DTX information; otherwise,

The feedback information determining unit 12 determines whether the transmission block TB with the codeword number n in the feedback window fails to be decoded, and if yes, determines that the nth bit feedback information corresponding to the feedback window on the carrier is NACK feedback information. Otherwise, it is determined that the nth bit feedback information corresponding to the feedback window on the carrier is ACK feedback information, where n is a positive integer, and "≤.

Preferably, the feedback information determining unit 12 is configured to determine, according to the specific indication information in the last downlink dynamic scheduling signaling received in the feedback window, the feedback on the carrier corresponding to the downlink dynamic scheduling signaling. Whether there is downlink dynamic scheduling signaling loss in the window; or, according to the DAI information in the last downlink dynamic scheduling signaling received in the feedback window, determining the feedback window on the carrier corresponding to the downlink dynamic scheduling signaling Whether there is downlink dynamic scheduling signaling loss.

Preferably, when the downlink dynamic scheduling signaling receiving unit 11 receives the specific indication information in the last downlink dynamic scheduling signaling in the feedback window, indicating that the downlink dynamic scheduling signaling is not the network side in the downlink. The feedback information determining unit 12 determines the feedback on the carrier corresponding to the downlink dynamic scheduling signaling, when the last downlink dynamic scheduling signaling in the downlink dynamic scheduling signaling of the same carrier is sent in the feedback window of the dynamic scheduling signaling. There is downlink dynamic scheduling signaling loss in the window. Preferably, the total number of downlink dynamic scheduling signaling that is received by the downlink dynamic scheduling signaling receiving unit 11 in the feedback window and corresponding to the last downlink dynamic scheduling signaling is smaller than the last downlink. The feedback information determining unit 12 is configured when the total number of downlink dynamic scheduling signalings of the same carrier corresponding to the last downlink dynamic scheduling signaling sent by the DAI information in the dynamic scheduling signaling is actually in the feedback window. Determining that there is downlink dynamic scheduling signaling loss in the feedback window on the carrier corresponding to the last downlink dynamic scheduling signaling.

On the network side, referring to FIG. 8, a device for acquiring feedback information according to an embodiment of the present invention includes: a downlink dynamic scheduling signaling sending unit 21, configured to send downlink dynamic scheduling signaling to a user equipment UE in a feedback window. And the specific indication information used to indicate whether the downlink dynamic scheduling signaling is the last downlink dynamic scheduling signaling corresponding to the same carrier in the feedback window where the downlink dynamic scheduling signaling is located, where the feedback window refers to the same One or more downlink subframes of an uplink subframe used for transmitting feedback information;

The feedback information receiving unit 22 is configured to receive feedback information corresponding to the feedback window sent by the UE.

Preferably, the feedback information is: ACK feedback information, or NACK feedback information, or DTX information. In summary, in the embodiment of the present invention, the UE receives the downlink dynamic scheduling signaling, where the method includes: indicating whether the downlink dynamic scheduling signaling is the last downlink dynamic scheduling corresponding to the same carrier in the feedback window where the downlink dynamic scheduling signaling is located. The specific indication information of the signaling, the feedback window refers to one or more downlink subframes that use the same uplink subframe to send feedback information; the UE determines the downlink according to the downlink dynamic scheduling signaling received in the same feedback window. Dynamically scheduling the feedback information corresponding to the feedback window on the carrier corresponding to the signaling, and transmitting the feedback information, so that the UE can effectively determine the loss of the downlink dynamic scheduling signaling according to the specific indication information, and the feedback is more accurate. The ACK/NACK feedback information is sent to the network side, which effectively avoids the problem that the feedback information is inaccurate due to the loss of the last downlink dynamic scheduling signaling. And the number of bits occupied by the ACK/NACK feedback information on each carrier can be reduced to ensure the demodulation performance of the uplink transmission.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present invention is in the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) in which computer usable program code is embodied.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Compilation of functions specified in one or more blocks of a flow or a flow and/or block diagram of a flow chart Set.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and the modifications of the invention

Claims

Rights request

A method for transmitting feedback information, characterized in that the method comprises:

The method according to claim 1, wherein the downlink dynamic scheduling signaling is signaling for scheduling dynamic downlink shared physical channel PDSCH transmission, or scheduling signaling indicating semi-static SPS resource release. .

The method according to claim 1, wherein the carrier corresponding to the downlink dynamic scheduling signaling is a carrier used for transmitting data scheduled by the downlink dynamic scheduling signaling, or is configured to indicate SPS resource release. Carrier.

The method according to claim 1, wherein the feedback information is 1-bit feedback information; the UE determines downlink dynamic scheduling signaling according to downlink dynamic scheduling signaling received in the same feedback window. The feedback information corresponding to the feedback window on the carrier includes:

The UE determines, according to the downlink dynamic scheduling signaling received in the same feedback window, whether there is downlink dynamic scheduling signaling loss in the feedback window on the carrier corresponding to the downlink dynamic scheduling signaling, and if yes, determining the feedback window on the carrier. Corresponding feedback information is non-acknowledgment NACK feedback information or discontinuous transmission of DTX information; otherwise,

Determining whether the transmission block TB decoding fails in the feedback window on the carrier, and if yes, determining that the feedback information corresponding to the feedback window on the carrier is NACK feedback information; otherwise, determining feedback information corresponding to the feedback window on the carrier To confirm the ACK feedback information.

The method according to claim 1, wherein the feedback information is N-bit feedback information, where N is a positive integer, and the value of N is equal to the number of pre-configured codewords;

The UE determines, according to the downlink dynamic scheduling signaling received in the same feedback window, the feedback information corresponding to the feedback window on the carrier corresponding to the downlink dynamic scheduling signaling, including:

The method according to claim 4 or 5, wherein the UE determines whether the feedback window on the carrier corresponding to the downlink dynamic scheduling signaling is in the feedback window according to the downlink dynamic scheduling signaling received in the same feedback window. Downstream Dynamic scheduling signaling is lost, including:

The UE determines, according to the downlink allocation indication DAI information in the last downlink dynamic scheduling signaling received in the feedback window, whether the downlink dynamic scheduling signaling is lost in the feedback window on the carrier corresponding to the downlink dynamic scheduling signaling.

The method according to claim 6, wherein the UE determines, according to the specific indication information in the last downlink dynamic scheduling signaling received in the feedback window, the carrier corresponding to the downlink dynamic scheduling signaling. Whether there is downlink dynamic scheduling signaling loss in the feedback window, including:

When the UE receives the specific indication information in the last downlink dynamic scheduling signaling in the feedback window, indicating that the downlink dynamic scheduling signaling is not the same as that sent by the network side in the feedback window where the downlink dynamic scheduling signaling is located. When the last downlink dynamic scheduling signaling in the downlink dynamic scheduling signaling of the carrier is determined, the downlink dynamic scheduling signaling loss in the feedback window on the carrier corresponding to the downlink dynamic scheduling signaling is determined.

The method according to claim 6, wherein the UE determines, according to the DAI information in the last downlink dynamic scheduling signaling received in the feedback window, that the last downlink dynamic scheduling signaling corresponds to Whether there is downlink dynamic scheduling signaling loss in the feedback window on the carrier, including:

The total number of downlink dynamic scheduling signaling corresponding to the same carrier that is received by the last downlink dynamic scheduling signaling in the feedback window is smaller than the network indicated by the DAI information in the received last downlink dynamic scheduling signaling. When the number of downlink dynamic scheduling signaling corresponding to the same downlink dynamic scheduling signaling is actually sent by the side, the side of the feedback window corresponding to the last downlink dynamic scheduling signaling is determined in the feedback window. Downlink dynamic scheduling signaling is lost.

9. A method for obtaining feedback information, characterized in that the method comprises:

And transmitting, by the base station, the downlink dynamic scheduling signaling to the user equipment UE, where the base station is configured to indicate whether the downlink dynamic scheduling signaling is the last downlink dynamic scheduling signal corresponding to the same carrier in the feedback window where the downlink dynamic scheduling signaling is located. The specific indication information of the command, the feedback window refers to one or more downlink subframes corresponding to the same uplink subframe used for transmitting the feedback information;

The base station receives feedback information corresponding to the feedback window sent by the UE.

The method according to claim 9, wherein the downlink dynamic scheduling signaling is signaling for scheduling dynamic downlink shared physical channel PDSCH transmission, or scheduling signaling indicating semi-static SPS resource release. .

The method according to claim 9, wherein the carrier corresponding to the downlink dynamic scheduling signaling is a carrier used for transmitting data scheduled by the downlink dynamic scheduling signaling, or is a semi-static SPS resource. The carrier that was released.

The method according to claim 9, wherein the feedback information is: confirming ACK feedback information, Or non-acknowledgment NACK feedback information, or non-continuous transmission of DTX information.

13. A device for transmitting feedback information, characterized in that the device comprises:

The device according to claim 13, wherein the downlink dynamic scheduling signaling is signaling for scheduling dynamic downlink shared physical channel PDSCH transmission, or scheduling signaling for indicating semi-static SPS resource release. .

The device according to claim 13, wherein the carrier corresponding to the downlink dynamic scheduling signaling is a carrier used for transmitting data scheduled by the downlink dynamic scheduling signaling, or is a semi-static SPS resource. The carrier that was released.

The apparatus according to claim 13, wherein the feedback information is 1-bit feedback information, and the feedback information determining unit is configured to: according to downlink dynamic scheduling signaling received in the same feedback window, Determining whether there is downlink dynamic scheduling signaling loss in the feedback window on the carrier corresponding to the downlink dynamic scheduling signaling, and if yes, determining that the feedback information corresponding to the feedback window on the carrier is non-acknowledgment NACK feedback information or discontinuous transmission DTX information Otherwise,

The device according to claim 13, wherein the feedback information is N-bit feedback information, where N is a positive integer, and the value of N is equal to the number of pre-configured codewords;

The feedback information determining unit is configured to determine, according to the downlink dynamic scheduling signaling received in the same feedback window, whether there is downlink dynamic scheduling signaling loss in the feedback window on the carrier corresponding to the downlink dynamic scheduling signaling, and if yes, And determining that the N-bit feedback information corresponding to the feedback window on the carrier is non-acknowledgment NACK feedback information or discontinuous transmission of DTX information; otherwise,

Determining whether the transmission block TB with the codeword number n in the feedback window fails to be decoded, and if yes, determining that the nth bit feedback information corresponding to the feedback window on the carrier is NACK feedback information; otherwise, determining the carrier The nth bit feedback information corresponding to the feedback window is acknowledgment ACK feedback information, where n is a positive integer, and "≤ ^.

The device according to claim 16 or 17, wherein the feedback information determining unit is configured to determine, according to specific indication information in a last downlink dynamic scheduling signaling received in the feedback window, The next Whether there is downlink dynamic scheduling signaling loss in the feedback window on the carrier corresponding to the dynamic scheduling signaling; or determining, according to the downlink allocation indication DAI information in the last downlink dynamic scheduling signaling received in the feedback window, Whether there is downlink dynamic scheduling signaling loss in the feedback window on the carrier corresponding to the downlink dynamic scheduling signaling.

The apparatus according to claim 18, wherein, when the downlink dynamic scheduling signaling receiving unit receives the specific indication information in the last downlink dynamic scheduling signaling in the feedback window, indicating the downlink The dynamic scheduling signaling is not the last downlink dynamic scheduling signaling in the downlink dynamic scheduling signaling of the same carrier that is sent by the network side in the feedback window in which the downlink dynamic scheduling signaling is located, and the feedback information determining unit determines the downlink. The downlink dynamic scheduling signaling loss is lost in the feedback window on the carrier corresponding to the dynamic scheduling signaling.

The device according to claim 18, wherein, when the downlink dynamic scheduling signaling receiving unit receives the same dynamic downlink scheduling signal corresponding to the last downlink dynamic scheduling signaling in the feedback window, The total number of the commands is smaller than the downlink dynamic scheduling of the same carrier corresponding to the last downlink dynamic scheduling signaling that is sent by the network side that is actually indicated by the DAI information in the received last downlink dynamic scheduling signaling. The feedback information determining unit determines that there is downlink dynamic scheduling signaling loss in the feedback window on the carrier corresponding to the last downlink dynamic scheduling signaling.

A device for acquiring feedback information, characterized in that the device comprises:

The device according to claim 21, wherein the downlink dynamic scheduling signaling is signaling for scheduling dynamic downlink shared physical channel PDSCH transmission, or scheduling signaling for indicating semi-static SPS resource release. .

The device according to claim 21, wherein the carrier corresponding to the downlink dynamic scheduling signaling is a carrier for transmitting data scheduled by the downlink dynamic scheduling signaling, or is a semi-static SPS resource. The carrier that was released.

The device according to claim 21, wherein the feedback information is: acknowledgement ACK feedback information, or non-acknowledgment NACK feedback information, or discontinuous transmission of DTX information.