CN114270743A

CN114270743A - Wireless communication method and terminal equipment

Info

Publication number: CN114270743A
Application number: CN201980099627.8A
Authority: CN
Inventors: 林亚男; 吴作敏
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2019-11-15
Filing date: 2019-11-15
Publication date: 2022-04-01
Anticipated expiration: 2039-11-15
Also published as: CN114270743B; WO2021092949A1

Abstract

A method and terminal device for wireless communication that enables a consistent balance of feedback overhead and understanding of the network device and the terminal device, the method comprising: the method comprises the steps that terminal equipment receives a first signaling, wherein the first signaling is used for indicating the terminal equipment to send feedback information of all hybrid automatic repeat request (HARQ) processes supported by the terminal equipment; the terminal device determines to generate a first feedback information codebook or a second feedback information codebook according to whether the first signaling includes new feedback indication information NFI of each channel group in M channel groups, where the first feedback information codebook includes only feedback information corresponding to each HARQ process in all HARQ processes, the second feedback information codebook includes feedback information corresponding to each HARQ process in all HARQ processes and new data indication information NDI corresponding to each HARQ process, each channel group includes at least one channel, and M is greater than 1.

Description

Wireless communication method and terminal equipment

Technical Field

The embodiment of the application relates to the field of communication, in particular to a wireless communication method and terminal equipment.

Background

On the unlicensed spectrum, the communication device follows the principle of "Listen Before Talk (LBT)", that is, Before the communication device transmits a signal on a channel of the unlicensed spectrum, it needs to perform channel sensing first, and only when the channel sensing result is that the channel is idle, the communication device can transmit the signal; if the channel sensing result of the communication device on the channel of the unlicensed spectrum is that the channel is busy, the communication device cannot transmit signals.

An NR (NR-based access to unlicensed spectrum, NR-U) system on an unlicensed band supports a mode of performing ACKnowledgement/Negative ACKnowledgement (ACK/NACK) feedback based on a Hybrid Automatic Repeat reQuest (HARQ) process. Specifically, if the terminal device supports a maximum of N HARQ processes, when the network device triggers the terminal device to perform feedback of all HARQ processes, no matter how many HARQ processes are actually received by the terminal device, ACK/NACK information corresponding to the N processes needs to be fed back to the network device.

In this case, if the network device uses the same HARQ process to perform scheduling transmission in sequence, and the terminal device only receives the data scheduled for the first time, and does not receive the data scheduled for the second time, when the feedback is performed, the feedback information of the data scheduled for the first time is fed back by the terminal device, and the feedback information of the data scheduled for the second time is fed back by the network device, if the feedback information of the data scheduled for the first time is ACK, the inconsistency of the understanding may cause the network device to assume that the data scheduled for the second time is successfully transmitted without retransmission, which may result in data loss and affect user experience.

Disclosure of Invention

The embodiment of the application provides a wireless communication method and terminal equipment, which are beneficial to realizing the consistent balance between feedback overhead and the understanding of network equipment and terminal equipment.

In a first aspect, a method of wireless communication is provided, including: a terminal device receives a first signaling, wherein the first signaling is used for indicating the terminal device to send feedback information of all hybrid automatic repeat request (HARQ) processes supported by the terminal device; the terminal device determines to generate a first feedback information codebook or a second feedback information codebook according to whether the first signaling includes new feedback indication information NFI of each channel group in M channel groups, where the first feedback information codebook includes only feedback information corresponding to each HARQ process in all HARQ processes, the second feedback information codebook includes feedback information corresponding to each HARQ process in all HARQ processes and new data indication information NDI corresponding to each HARQ process, each channel group includes at least one channel, and M is a positive integer greater than 1.

In a second aspect, a terminal device is provided, configured to perform the method of the first aspect or any possible implementation manner of the first aspect. In particular, the terminal device comprises means for performing the method of the first aspect described above or any possible implementation manner of the first aspect.

In a third aspect, a terminal device is provided, which includes: including a processor and memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, and executing the method in the first aspect or each implementation manner thereof.

In a fourth aspect, a chip is provided for implementing the method in the first aspect or its implementation manners.

Specifically, the chip includes: a processor configured to call and run the computer program from the memory, so that the device on which the chip is installed performs the method according to the first aspect or the implementation manner thereof.

In a fifth aspect, a computer-readable storage medium is provided for storing a computer program, which causes a computer to execute the method of the first aspect or its implementations.

A sixth aspect provides a computer program product comprising computer program instructions for causing a computer to perform the method of the first aspect or its implementations.

In a seventh aspect, a computer program is provided, which, when run on a computer, causes the computer to perform the method of the first aspect or its implementations.

Based on the above technical solution, the terminal device may determine the content included in the reported feedback information codebook according to whether the signaling triggering the terminal device to send the feedback information of all HARQ processes includes the NFI of each channel group, which is beneficial to achieve a consistent balance between the feedback overhead and the understanding of the network device and the terminal device on the feedback information.

Drawings

Fig. 1 is a schematic diagram of an application scenario provided in an embodiment of the present application.

Fig. 2 is a schematic diagram of a method of wireless communication provided by an embodiment of the present application.

Fig. 3 is a schematic block diagram of a terminal device according to an embodiment of the present application.

Fig. 4 is a schematic block diagram of a communication device according to another embodiment of the present application.

Fig. 5 is a schematic block diagram of a chip provided in an embodiment of the present application.

Detailed Description

Technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (Long Term Evolution, LTE) System, a LTE Frequency Division Duplex (FDD) System, a LTE Time Division Duplex (TDD) System, a Long Term Evolution (Advanced) Evolution (LTE-A) System, a New Radio (New Radio, NR) System, an Evolution System of an NR System, a non-licensed-channel-Access (LTE-N) System, a non-licensed-U-NR System, a non-licensed-Universal-NR (NR) System, UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, Wireless Local Area Network (WLAN), Wireless Fidelity (WiFi), next generation communication system, or other communication system.

Illustratively, a communication system 100 applied in the embodiment of the present application is shown in fig. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communication terminal, a terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within that coverage area. Optionally, the Network device 110 may be a Base Transceiver Station (BTS) in a GSM system or a CDMA system, a Base Station (NodeB, NB) in a WCDMA system, an evolved Node B (eNB or eNodeB) in an LTE system, or a wireless controller in a Cloud Radio Access Network (CRAN), or may be a Network device in a Mobile switching center, a relay Station, an Access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, a Network-side device in a 5G Network, or a Network device in a Public Land Mobile Network (PLMN) for future evolution, or the like.

The communication system 100 further comprises at least one terminal device 120 located within the coverage area of the network device 110. As used herein, "terminal equipment" includes, but is not limited to, connections via wireline, such as Public Switched Telephone Network (PSTN), Digital Subscriber Line (DSL), Digital cable, direct cable connection; and/or another data connection/network; and/or via a Wireless interface, e.g., to a cellular Network, a Wireless Local Area Network (WLAN), a digital television Network such as a DVB-H Network, a satellite Network, an AM-FM broadcast transmitter; and/or means of another terminal device arranged to receive/transmit communication signals; and/or Internet of Things (IoT) devices. A terminal device arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal", or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; personal Communications Systems (PCS) terminals that may combine cellular radiotelephones with data processing, facsimile, and data Communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. Terminal Equipment may refer to an access terminal, User Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, User terminal, wireless communication device, User agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having Wireless communication capabilities, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolved PLMN, etc.

Optionally, Device-to-Device (D2D) communication may be performed between the terminal devices 120.

Alternatively, the 5G system or the 5G network may also be referred to as a New Radio (NR) system or an NR network.

Fig. 1 exemplarily shows one network device and two terminal devices, and optionally, the communication system 100 may include a plurality of network devices and may include other numbers of terminal devices within the coverage of each network device, which is not limited in this embodiment of the present application.

Optionally, the communication system 100 may further include other network entities such as a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

It should be understood that a device having a communication function in a network/system in the embodiments of the present application may be referred to as a communication device. Taking the communication system 100 shown in fig. 1 as an example, the communication device may include a network device 110 and a terminal device 120 having a communication function, and the network device 110 and the terminal device 120 may be the specific devices described above and are not described herein again; the communication device may also include other devices in the communication system 100, such as other network entities, for example, a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In the NR-U system, a terminal device determines a mode of supporting ACK/NACK (ACK/NACK) feedback based on all Hybrid Automatic Repeat reQuest (HARQ) processes.

Specifically, the terminal device supports a maximum of N HARQ processes, and when the network device triggers the terminal device to perform feedback of all HARQ processes, no matter how many HARQ processes are actually received by the terminal device, ACK/NACK information corresponding to the N processes needs to be fed back to the network device. Wherein, the ACK/NACK information of each HARQ process may be sequentially mapped into a feedback information codebook (codebook) according to the numbering sequence of the HARQ processes. The ACK/NACK information corresponding to the HARQ process that is not received by the terminal device is set as placeholder information (e.g., NACK).

It is assumed that the terminal device supports at most 8 HARQ processes, and one HARQ process is transmitted through one Physical Downlink Shared Channel (PDSCH) at a time. The number of the maximum Transport Blocks (TBs) supported by the terminal device is 2 (i.e., a PDSCH carries at most 2 TBs), and each TB corresponds to independent ACK/NACK information.

If the terminal receives the HARQ process 3, the HARQ process 7, and the HARQ process 4, when the network device triggers the terminal device to perform feedback of the full HARQ process, the terminal device transmits the following feedback information in the PUCCH: { NACK_HARQ0,TB0,NACK _HARQ0,TB1,NACK _HARQ1,TB0,NACK _HARQ1,TB1,NACK _HARQ2,TB0,NACK _HAR _Q2,TB1,b _HARQ3,TB0,b _HARQ3,TB1,b _HARQ4,TB0,b _HARQ4,TB1,NACK _HARQ5,TB0,NACK _HARQ5,TB1,NACK _HARQ6, _TB0,NACK _HARQ6,TB1,b _HARQ7,TB0,b _HARQ7,TB1In which b is_HARQi,TBjIndicating TBj corresponding ACK/NACK information in HARQ process i.

In some scenarios, the network device schedules the transmission of TB a through the HARQ process 3 for the first time, and then schedules the transmission of a New transport block TB b through the HARQ process 3, at this time, a New Data Indicator (NDI) in a Downlink Control Information (DCI) scheduling the HARQ process 3 is turned over with respect to the last scheduling, if the terminal device receives TB a but does not receive TB b. In this case, if the network device instructs the terminal device to perform full HARQ process feedback, for HARQ process 3, the terminal device feeds back ACK/NACK information corresponding to TB a, and the network device sends ACK/NACK information corresponding to TB b as the terminal device. Since this HARQ process 3 is rescheduled data, usually TB a has been correctly received, i.e. the corresponding feedback information is ACK. Such a divergence in the understanding of the terminal device and the network device may cause the network device to assume that TB b is correctly received and not retransmit TB b any more, thereby causing data loss and affecting the user experience.

In some embodiments, the above-mentioned ambiguity can be avoided by reporting the NDI information, specifically, when the network device triggers the terminal device to perform feedback of all HARQ processes, the network device further indicates the NDI information corresponding to each HARQ process, or when the terminal device reports the feedback information, the network device reports the NDI information of each HARQ process to the network device together. However, this feedback method causes a large overhead of the feedback signaling of the terminal device, which affects the transmission of the feedback information.

In view of this, the embodiments of the present application provide a feedback method, which is beneficial to achieve a consistent balance between feedback overhead and understanding of a network device and a terminal device.

Fig. 2 is a schematic flow chart of a method 200 for wireless communication according to an embodiment of the present disclosure. The method 200 may be performed by a terminal device in the communication system shown in fig. 1, and as shown in fig. 2, the method 200 may include at least part of the following:

s210, a terminal device receives a first signaling, wherein the first signaling is used for indicating the terminal device to send feedback information of all hybrid automatic repeat request (HARQ) processes supported by the terminal device;

s220, the terminal device determines to generate a first feedback information codebook or a second feedback information codebook according to whether the first signaling includes new feedback indication information NFI of each channel group in M channel groups, wherein the first feedback information codebook includes only feedback information corresponding to each HARQ process in all HARQ processes, the second feedback information codebook includes feedback information corresponding to each HARQ process in all HARQ processes and new feedback indication information NDI corresponding to each HARQ process, each channel group includes at least one channel, and M is a positive integer greater than 1.

In this embodiment of the present application, M is a maximum number of channel groups supported by the terminal device, and as a specific example, M is 2, and hereinafter, M is equal to 2 in the specific example, but the embodiment of the present application is not limited thereto.

In this embodiment of the present application, the number of all HARQ processes may be determined according to a working mode of a carrier configured by the terminal device and a maximum number of HARQ processes supported by the terminal device on each carrier.

As an example, the terminal device is configured in a single carrier operating mode, the number of all HARQ processes may be determined according to the number of the maximum HARQ processes supported by the terminal device on the single carrier (e.g. carrier 1), for example, if the terminal device supports 16 HARQ processes on the carrier 1, then all HARQ processes are 16.

As another example, if the terminal device is configured in the carrier aggregation mode, the number of all HARQ processes may be determined according to the number of the maximum HARQ processes supported by the terminal device on the multiple carriers (e.g., carrier 1 and carrier 2), for example, if the terminal device on the carrier 1 supports 16 HARQ processes and the terminal device on the carrier 2 supports 8 HARQ processes at most, then all HARQ processes are 24.

In some embodiments of the present application, the first signaling may be any downlink signaling, for example, DCI, where the DCI may be used to instruct the terminal device to send feedback information (one-slot feedback) of all HARQ processes. That is, no matter how many HARQ processes are actually received by the terminal device, the feedback information of all HARQ processes needs to be fed back to the network device. Wherein, the feedback information of the HARQ process that is not received may be set as the occupancy information, e.g. NACK.

In some embodiments, the first signaling may include M New Feedback Indicator (NFI) signals corresponding to the M channel groups.

In still other embodiments, the first signaling may include NFI of a partial channel group of the M channel groups, or may not include NFI.

Optionally, in the first signaling, the M NFIs arranged in a certain order, for example, in accordance with the number of the corresponding channel group, so that the terminal device determines the NFI corresponding to each channel group.

In this embodiment, each of the M channel groups may include at least one channel, and the channel in each channel group may be a PDCCH or a PDSCH. The terminal device may receive at least one channel in each of the M channel groups, and acquire information of a channel group to which the channel belongs and an NFI corresponding to the channel group from the received channel.

In some embodiments of the present application, the S220 may include:

if the first signaling comprises the NFI of each of the M channel groups, determining to generate the first feedback information codebook; or

And if the first signaling only comprises NFIs of partial channel groups in the M channel groups or does not comprise the NFIs, determining to generate the second feedback information codebook.

Under the condition that the first signaling includes the NFI of each channel group in all the channel groups, the feedback information codebook does not include the NDI corresponding to the HARQ process, and it can also be ensured that the terminal device and the network device understand the feedback information consistently, so that the feedback information codebook generated by the terminal device may include only the feedback information of each HARQ process without the NDI, which is beneficial to reducing feedback overhead.

In addition, under the condition that the first signaling only includes the NFI of the partial channel group or does not include the NFI, the generated feedback information codebook includes the feedback information and the NDI corresponding to each HARQ process, so that the terminal device and the network device can ensure that the terminal device and the network device understand the feedback information consistently.

For example, for the feedback of the TB b, in this embodiment of the application, the terminal device may send the feedback information of the TB a and the NDI corresponding to the HARQ process 3 carrying the TB a to the network device together, so that the network device may determine the data corresponding to the feedback information according to the feedback information and the NDI, and since the NDIs corresponding to the HARQ processes 3 are different when the TB a and the TB b are transmitted, the reported feedback information may distinguish which data is the feedback information.

In this embodiment of the present application, the feedback information in the first feedback information codebook is feedback information of N channel groups, and the NFI of a channel group in the N channel groups is the same as the NFI of a channel group in the M channel groups.

For example, the M channel groups include a first channel group, and the first feedback information codebook may include feedback information of a channel group that is the same as the NFI of the first channel group.

If the first feedback information codebook is determined to be generated, the terminal device may determine the permutation sequence of the feedback information in the first feedback information codebook according to the carrier working mode.

As an embodiment, if the terminal device is configured in a single carrier operating mode, that is, all HARQ processes are on the same carrier, the terminal device may arrange the feedback information corresponding to all HARQ processes according to the process number sequence of the HARQ processes to obtain the first feedback information codebook.

Optionally, if multiple TBs can be transmitted in one PDSCH on the carrier, for each HARQ process, the feedback information corresponding to each TB may also be arranged according to the sequence of the TBs.

As another embodiment, if the terminal device is configured in a carrier aggregation operating mode, and all HARQ processes are on multiple carriers, the terminal device arranges, according to an order of a carrier number first and a HARQ process number second, feedback information corresponding to the HARQ process on each carrier of the multiple carriers to obtain the first feedback information codebook. Optionally, if multiple TBs can be transmitted in one PDSCH on the carrier, for each HARQ process, the feedback information corresponding to each TB may also be arranged according to the sequence of the TBs.

As an example, if the terminal device is configured with a carrier aggregation operation mode, where the terminal device supports at most 16 HARQ processes on carrier 1 and includes at most two TBs in one PDSCH, and supports at most 8 HARQ processes on carrier 2 and includes at most one TB in one PDSCH, and the PDSCH transmitting each HARQ process belongs to one of the 2 channel groups.

If the first signaling includes NFIs of 2 channel groups and the first signaling further instructs the terminal device to send feedback information of all HARQ processes, the terminal device may generate a first feedback information codebook. The first feedback information codebook may include ACK/NACK information of 16 × 2+8 × 1 ═ 40 bits, and each TB corresponds to independent ACK/NACK information.

Specifically, the corresponding feedback information is mapped to the corresponding bits of the feedback codebook in sequence according to the sequence of the carrier numbers, then in each carrier, according to the sequence of the HARQ process numbers, and in each HARQ process, according to the sequence of the TB numbers. The first feedback information codebook may be: { o_1,1,1,o _1,1,2,o _1,2,1,o _1,2,2,……,o _1,16,1,o _1,16,2,o _2,1,1,o _2,2,1,……,o _2,8,1In which o_i,j,kThe feedback information corresponding to TB block (number) k in HARQ process (number) j on carrier i is shown.

In other embodiments, if it is determined that the second feedback information codebook is generated, the terminal device may determine an order of arrangement of the feedback information in the second feedback information codebook according to the carrier operating mode.

As an embodiment, if the terminal device is configured in a single carrier operating mode, that is, all HARQ processes are on the same carrier, the terminal device may arrange the feedback information and the NDI corresponding to each HARQ process in all HARQ processes according to the process number sequence of the HARQ processes to obtain the second feedback information codebook.

That is, the terminal device may feed back the feedback information and the NDI corresponding to each HARQ process to the network device, so that the network device determines the channel corresponding to the feedback information. Optionally, if multiple TBs can be transmitted in one PDSCH on the carrier, for each HARQ process, the feedback information and the NDI corresponding to each TB may also be arranged according to the order of the TBs.

As another embodiment, if the terminal device is configured in a carrier aggregation operating mode, and all HARQ processes are on multiple carriers, the terminal device may arrange the feedback information and the NDI corresponding to the HARQ process on each carrier of the multiple carriers according to an order of a carrier number first and a HARQ process number second to obtain the second feedback information codebook. Optionally, if multiple TBs can be transmitted in one PDSCH on the carrier, for each HARQ process, the feedback information and the NDI corresponding to each TB may also be arranged according to the order of the TBs.

As an example, if the terminal device is configured with a carrier aggregation mode in which the terminal device supports 16 HARQ processes at most on carrier 1 and includes two TBs at most in one PDSCH, the terminal device supports 8 HARQ processes at most on carrier 2 and includes one TB at most in one PDSCH, and the PDSCH transmitting each HARQ process belongs to one of the 2 channel groups.

If the first signaling is used for scheduling a first PSDCH, the first PDSCH belongs to a first channel group, the first signaling includes an NFI, and corresponds to the first channel group, or the first signaling does not include the NFI, and the first signaling further indicates the terminal device to send feedback information of all HARQ processes, the terminal device may generate a second feedback information codebook.

Based on the above configuration, the second feedback information codebook may include ACK/NACK information of 16 × 2+8 × 1 × 2 ═ 80 bits, and each TB corresponds to independent ACK/NACK information and NDI.

Specifically, the corresponding feedback information and NDI are mapped to corresponding bits in the feedback codebook in sequence according to the sequence of carrier numbers, then in each carrier, according to the sequence of HARQ process numbers, and in each HARQ process, according to the sequence of TB numbers. The second feedback information codebook is: { o_1,1,1,NDI _1,1,1，o _1,1,2,NDI _1,1,2，o _1,2,1,NDI _1,2,1，o _1,2,2,NDI _1,2,2，……,o _1,16,1,NDI _1,16,1，o _1,16,2,NDI _1,16,2，o _2,1,1,NDI _2,1,1，o _2,2,1,NDI _2,2,1……,o _2,8,1，NDI _2,8,1In which o_i,j,kIndicates the feedback information, NDI, corresponding to TB block (number) k in HARQ process (number) j on carrier i_i,j,kRepresented on carrier i, HAIn RQ process (number) j, TB block (number) k corresponds to NDI.

In this embodiment of the present application, the feedback information of each HARQ process is feedback information of a channel transmitting the HARQ process, and mapping the feedback information of the HARQ process into the codebook may be mapping the feedback information of the channel into the codebook.

For example, the all HARQ processes include a first HARQ process, and the first HARQ process is transmitted through a channel in a first channel group of the M channel groups, and then the feedback information of the first HARQ process is determined according to the feedback information of the channel through which the first HARQ process is transmitted, where the NFI corresponding to the first channel group is the same as the NFI corresponding to the first channel group indicated in the first signaling.

As an example, if the first HARQ process is transmitted through one channel in the first channel group, the terminal device determines the feedback information of the first HARQ process according to a reception condition of the one channel. And if the channel is successfully received, determining that the feedback information of the first HARQ process is ACK, otherwise, determining that the feedback information is NACK.

As another example, if the first HARQ process is transmitted through multiple channels in the first channel group, the terminal device determines the feedback information of the first HARQ process according to whether transport blocks, TBs, transmitted through the multiple channels are the same and the reception conditions of the multiple channels.

If the multiple channels are used for transmitting the same TB, receiving any channel is correct, and the feedback information of the first HARQ process is ACK, or if the multiple channels are failed to receive, the feedback information of the first HARQ process is NACK; or

If the multiple channels are used for different Transport Blocks (TBs), the terminal device determines that the feedback information of the first HARQ process is the feedback information of the TB with the latest transmission time in the multiple channels. And if the TB reception with the latest transmission time is correct, determining that the feedback information of the first HARQ process is ACK, otherwise, determining that the feedback information of the first HARQ process is NACK.

Therefore, in this embodiment of the present application, when a signaling that triggers terminal equipment to send feedback information of all HARQ processes includes NFI of each channel group, a feedback information codebook reported by the terminal equipment may include only feedback information of HARQ processes, which can reduce overhead and improve system efficiency, and meanwhile, can ensure that network equipment and terminal equipment understand feedback information consistently.

Moreover, when the signaling triggering the terminal device to send the feedback information of all HARQ processes includes NFI of a partial channel group or does not include NFI, the feedback information codebook reported by the terminal device may include the feedback information and NDI of each HARQ process, which can ensure that the network device and the terminal device understand the feedback information consistently.

While method embodiments of the present application are described in detail above with reference to fig. 2, apparatus embodiments of the present application are described in detail below with reference to fig. 3-5, it being understood that apparatus embodiments correspond to method embodiments and that similar descriptions may refer to method embodiments.

Fig. 3 shows a schematic block diagram of a terminal device 400 according to an embodiment of the application. As shown in fig. 3, the terminal apparatus 400 includes:

a communication module 410, configured to receive a first signaling, where the first signaling is used to instruct the terminal device to send feedback information of all HARQ processes supported by the terminal device;

a determining module 420, configured to determine, according to whether the first signaling includes new feedback indication information NFI of each of M channel groups, to generate a first feedback information codebook or a second feedback information codebook, where the first feedback information codebook includes only feedback information corresponding to each HARQ process in all HARQ processes, the second feedback information codebook includes feedback information corresponding to each HARQ process in all HARQ processes and new feedback indication information NDI corresponding to each HARQ process, each channel group includes at least one channel, and M is a positive integer greater than 1.

Optionally, in some embodiments, the determining module 420 is specifically configured to:

Optionally, in some embodiments, M is the maximum number of channel groups supported by the terminal device.

Optionally, in some embodiments, the feedback information in the first feedback information codebook is feedback information of N channel groups, an NFI of a channel group of the N channel groups is the same as an NFI of a channel group of the M channel groups indicated in the first signaling, and N is equal to M.

Optionally, in some embodiments, the terminal device 400 further includes:

a processing module, configured to arrange, when the determining module determines to generate the first feedback information codebook and all HARQ processes are on the same carrier, the feedback information corresponding to all HARQ processes according to the process numbers of the HARQ processes in order to obtain the first feedback information codebook; or

And under the condition that the determining module determines to generate the first feedback information codebook and all the HARQ processes are on a plurality of carriers, arranging the feedback information corresponding to the HARQ process on each carrier in the plurality of carriers according to the sequence of the carrier number first and the HARQ process number second to obtain the first feedback information codebook.

Optionally, in some embodiments, the terminal device 400 further includes:

a processing module, configured to, when the determining module determines to generate the second feedback information codebook and all HARQ processes are on the same carrier, arrange the feedback information corresponding to each HARQ process in all HARQ processes and the NDI corresponding to each HARQ process according to the sequence of process numbers of the HARQ processes to obtain the second feedback information codebook; or

And under the condition that the determining module determines to generate the second feedback information codebook and all the HARQ processes are on a plurality of carriers, arranging the feedback information and the NDI corresponding to the HARQ process on each carrier in the plurality of carriers according to the sequence of the carrier number first and the HARQ process number second to obtain the second feedback information codebook.

Optionally, in some embodiments, the determining module 420 is further configured to:

if the HARQ processes transmitted by the M channel groups comprise a first HARQ process, determining the feedback information of the first HARQ process according to the receiving condition of the channel for transmitting the first HARQ process; or

And if the HARQ processes transmitted by the M channel groups do not comprise a second HARQ process, determining that the feedback information of the second HARQ process is Negative Acknowledgement (NACK).

and if the first HARQ process is transmitted through a plurality of channels, determining the feedback information of the first HARQ process according to whether the Transport Blocks (TB) transmitted by the plurality of channels are the same and the receiving conditions of the plurality of channels.

if the multiple channels transmit the same Transport Block (TB) and any channel in the multiple channels is successfully received, determining that the feedback information of the first HARQ process is Acknowledgement (ACK);

if the multiple channels transmit the same Transport Block (TB) and all the channels in the multiple channels fail to receive, determining that the feedback information of the first HARQ process is NACK;

and if the plurality of channels transmit different Transport Blocks (TBs), determining that the feedback information of the first HARQ process is the feedback information of the TB with the latest transmission time in the plurality of channels.

Optionally, in some embodiments, the channel in each channel group is a physical downlink control channel PDCCH or a physical downlink shared channel PDSCH.

Optionally, in some embodiments, the communication module may be a communication interface or a transceiver, or an input/output interface of a communication chip or a system on a chip. The determining means and the processing means may be one or more processors.

It should be understood that the terminal device 400 according to the embodiment of the present application may correspond to a terminal device in the embodiment of the method of the present application, and the above and other operations and/or functions of each unit in the terminal device 400 are respectively for implementing a corresponding flow of the terminal device in the method 200 shown in fig. 2, and are not described herein again for brevity.

Fig. 4 is a schematic structural diagram of a communication device 600 according to an embodiment of the present application. The communication device 600 shown in fig. 4 includes a processor 610, and the processor 610 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 4, the communication device 600 may further include a memory 620. From the memory 620, the processor 610 may call and run a computer program to implement the method in the embodiment of the present application.

The memory 620 may be a separate device from the processor 610, or may be integrated into the processor 610.

Optionally, as shown in fig. 4, the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, and specifically, may transmit information or data to the other devices or receive information or data transmitted by the other devices.

The transceiver 630 may include a transmitter and a receiver, among others. The transceiver 630 may further include one or more antennas.

Optionally, the communication device 600 may specifically be a network device in the embodiment of the present application, and the communication device 600 may implement a corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the communication device 600 may specifically be a mobile terminal/terminal device according to this embodiment, and the communication device 600 may implement a corresponding process implemented by the mobile terminal/terminal device in each method according to this embodiment, which is not described herein again for brevity.

Fig. 5 is a schematic structural diagram of a chip of an embodiment of the present application. The chip 700 shown in fig. 5 includes a processor 710, and the processor 710 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 5, the chip 700 may further include a memory 720. From the memory 720, the processor 710 can call and run a computer program to implement the method in the embodiment of the present application.

The memory 720 may be a separate device from the processor 710, or may be integrated into the processor 710.

Optionally, the chip 700 may further include an input interface 730. The processor 710 may control the input interface 730 to communicate with other devices or chips, and in particular, may obtain information or data transmitted by other devices or chips.

Optionally, the chip 700 may further include an output interface 740. The processor 710 may control the output interface 740 to communicate with other devices or chips, and in particular, may output information or data to the other devices or chips.

Optionally, the chip may be applied to the network device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the chip may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, and for brevity, no further description is given here.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip or a system-on-chip, etc.

It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (DDR SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memories are exemplary but not limiting illustrations, for example, the memories in the embodiments of the present application may also be Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM, ESDRAM), Synchronous Link DRAM (SLDRAM), Direct Rambus RAM (DR RAM), and the like. That is, the memory in the embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

The embodiment of the application also provides a computer readable storage medium for storing the computer program.

Optionally, the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the computer-readable storage medium may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

Embodiments of the present application also provide a computer program product comprising computer program instructions.

Optionally, the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the network device in the methods in the embodiments of the present application, which are not described herein again for simplicity.

Optionally, the computer program product may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiment of the present application, which are not described herein again for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to the network device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the computer program may be applied to the mobile terminal/terminal device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method of wireless communication, comprising:

a terminal device receives a first signaling, wherein the first signaling is used for indicating the terminal device to send feedback information of all hybrid automatic repeat request (HARQ) processes supported by the terminal device;

the terminal device determines to generate a first feedback information codebook or a second feedback information codebook according to whether the first signaling includes new feedback indication information NFI of each channel group in M channel groups, where the first feedback information codebook includes only feedback information corresponding to each HARQ process in all HARQ processes, the second feedback information codebook includes feedback information corresponding to each HARQ process in all HARQ processes and new data indication information NDI corresponding to each HARQ process, each channel group includes at least one channel, and M is a positive integer greater than 1.
The method of claim 1, wherein the determining, by the terminal device, whether to generate the first feedback information codebook or the second feedback information codebook according to whether the first signaling includes new feedback indication information NFI for each of the M channel groups comprises:

if the first signaling comprises the NFI of each of the M channel groups, determining to generate the first feedback information codebook; or

And if the first signaling only comprises NFIs of partial channel groups in the M channel groups or does not comprise the NFIs, determining to generate the second feedback information codebook.
The method according to claim 1 or 2, wherein M is the maximum number of channel groups supported by the terminal device.
The method according to any of claims 1-3, wherein the feedback information in the first codebook of feedback information is feedback information for N channel groups, the NFI of a channel group of the N channel groups is the same as the NFI of a channel group of the M channel groups indicated in the first signaling, and the N is equal to the M.
The method according to any one of claims 1 to 4, further comprising:

if the first feedback information codebook is determined to be generated and all HARQ processes are on the same carrier, arranging the feedback information corresponding to all HARQ processes according to the process number sequence of the HARQ processes to obtain the first feedback information codebook; or

And if the first feedback information codebook is determined to be generated and all the HARQ processes are arranged on a plurality of carriers, arranging the feedback information corresponding to the HARQ process on each carrier in the plurality of carriers according to the sequence of the carrier number first and the HARQ process number second to obtain the first feedback information codebook.
The method according to any one of claims 1 to 4, further comprising:

if the second feedback information codebook is determined to be generated and all HARQ processes are on the same carrier, arranging the feedback information corresponding to each HARQ process in all HARQ processes and the NDI corresponding to each HARQ process according to the process number sequence of the HARQ processes to obtain the second feedback information codebook; or

If the second feedback information codebook is determined to be generated and all the HARQ processes are arranged on a plurality of carriers, the feedback information and the NDI corresponding to the HARQ process on each carrier in the plurality of carriers are arranged according to the sequence of the carrier number first and the HARQ process number second to obtain the second feedback information codebook.
The method according to any one of claims 1 to 6, further comprising:

if the HARQ processes transmitted by the M channel groups comprise a first HARQ process, determining the feedback information of the first HARQ process according to the receiving condition of the channel for transmitting the first HARQ process; or

And if the HARQ processes transmitted by the M channel groups do not comprise a second HARQ process, determining that the feedback information of the second HARQ process is Negative Acknowledgement (NACK).
The method as claimed in any of claims 1 to 7, wherein the determining the feedback information of the first HARQ process according to the reception of the channel transmitting the first HARQ process comprises:

and if the first HARQ process is transmitted through a plurality of channels, determining the feedback information of the first HARQ process according to whether the Transport Blocks (TB) transmitted by the plurality of channels are the same and the receiving conditions of the plurality of channels.
The method as claimed in claim 8, wherein the determining the feedback information of the first HARQ process according to whether the Transport Blocks (TBs) transmitted by the plurality of channels are the same and the reception condition of the plurality of channels comprises:

if the multiple channels transmit the same Transport Block (TB) and any channel in the multiple channels is successfully received, determining that the feedback information of the first HARQ process is Acknowledgement (ACK); or

If the multiple channels transmit the same Transport Block (TB) and all the channels in the multiple channels fail to receive, determining that the feedback information of the first HARQ process is NACK; or

And if the plurality of channels transmit different Transport Blocks (TBs), determining that the feedback information of the first HARQ process is the feedback information of the TB with the latest transmission time in the plurality of channels.
The method according to any one of claims 1 to 9, wherein the channel in each channel group is a Physical Downlink Control Channel (PDCCH) or a Physical Downlink Shared Channel (PDSCH).
A terminal device, comprising:

a communication module, configured to receive a first signaling, where the first signaling is used to instruct the terminal device to send feedback information of all HARQ processes supported by the terminal device;

a determining module, configured to determine to generate a first feedback information codebook or a second feedback information codebook according to whether the first signaling includes new feedback indication information NFI of each of M channel groups, where the first feedback information codebook includes only feedback information corresponding to each HARQ process in all HARQ processes, the second feedback information codebook includes feedback information corresponding to each HARQ process in all HARQ processes and new feedback indication information NDI corresponding to each HARQ process, each channel group includes at least one channel, and M is a positive integer greater than 1.
The terminal device of claim 11, wherein the determining module is specifically configured to:

if the first signaling comprises the NFI of each of the M channel groups, determining to generate the first feedback information codebook; or

And if the first signaling only comprises NFIs of partial channel groups in the M channel groups or does not comprise the NFIs, determining to generate the second feedback information codebook.
The terminal device according to claim 11 or 12, wherein M is a maximum number of channel groups supported by the terminal device.
The terminal device according to any of claims 11 to 13, wherein the feedback information in the first feedback information codebook is feedback information of N channel groups, and NFI of a channel group of the N channel groups is the same as NFI of a channel group of the M channel groups indicated in the first signaling, and wherein N is equal to M.
The terminal device according to any of claims 11 to 14, characterized in that the terminal device further comprises:

a processing module, configured to arrange, when the determining module determines to generate the first feedback information codebook and all HARQ processes are on the same carrier, the feedback information corresponding to all HARQ processes according to the process numbers of the HARQ processes in order to obtain the first feedback information codebook; or

And under the condition that the determining module determines to generate the first feedback information codebook and all the HARQ processes are on a plurality of carriers, arranging the feedback information corresponding to the HARQ process on each carrier in the plurality of carriers according to the sequence of the carrier number first and the HARQ process number second to obtain the first feedback information codebook.
The terminal device according to any of claims 11 to 14, characterized in that the terminal device further comprises:

a processing module, configured to, when the determining module determines to generate the second feedback information codebook and all HARQ processes are on the same carrier, arrange the feedback information corresponding to each HARQ process in all HARQ processes and the NDI corresponding to each HARQ process according to the sequence of process numbers of the HARQ processes to obtain the second feedback information codebook; or

And under the condition that the determining module determines to generate the second feedback information codebook and all the HARQ processes are on a plurality of carriers, arranging the feedback information and the NDI corresponding to the HARQ process on each carrier in the plurality of carriers according to the sequence of the carrier number first and the HARQ process number second to obtain the second feedback information codebook.
The terminal device of any of claims 11-16, wherein the determining module is further configured to:

if the HARQ processes transmitted by the M channel groups comprise a first HARQ process, determining the feedback information of the first HARQ process according to the receiving condition of the channel for transmitting the first HARQ process; or

And if the HARQ processes transmitted by the M channel groups do not comprise a second HARQ process, determining that the feedback information of the second HARQ process is Negative Acknowledgement (NACK).
The terminal device of any of claims 11-17, wherein the determining module is further configured to:

and if the first HARQ process is transmitted through a plurality of channels, determining the feedback information of the first HARQ process according to whether the Transport Blocks (TB) transmitted by the plurality of channels are the same and the receiving conditions of the plurality of channels.
The terminal device of claim 18, wherein the determining module is specifically configured to:

if the multiple channels transmit the same Transport Block (TB) and any channel in the multiple channels is successfully received, determining that the feedback information of the first HARQ process is Acknowledgement (ACK);

if the multiple channels transmit the same Transport Block (TB) and all the channels in the multiple channels fail to receive, determining that the feedback information of the first HARQ process is NACK;

and if the plurality of channels transmit different Transport Blocks (TBs), determining that the feedback information of the first HARQ process is the feedback information of the TB with the latest transmission time in the plurality of channels.
The terminal device according to any of claims 11 to 19, wherein the channel in each channel group is a physical downlink control channel PDCCH or a physical downlink shared channel PDSCH.
A terminal device, comprising: a processor and a memory for storing a computer program, the processor being configured to invoke and execute the computer program stored in the memory to perform the method of any of claims 1 to 10.
A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 1 to 10.
A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 1 to 10.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 10.
A computer program, characterized in that the computer program causes a computer to perform the method according to any one of claims 1 to 10.