CN116438760A

CN116438760A - Channel feedback method, terminal equipment and network equipment

Info

Publication number: CN116438760A
Application number: CN202080102467.0A
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: 2020-09-16
Filing date: 2020-09-16
Publication date: 2023-07-14
Also published as: WO2022056725A1

Abstract

The application provides a channel feedback method, terminal equipment and network equipment, which can avoid the problem of disorder when receiving downlink data under the condition that the value of a feedback time sequence corresponding to a downlink channel is an invalid value. The channel feedback method comprises the following steps: the terminal equipment receives configuration information, the configuration information is used for configuring the terminal equipment to receive a second downlink channel after a first downlink channel, the value of a feedback time sequence corresponding to the first downlink channel is an invalid value, the feedback information corresponding to the second downlink channel is transmitted through a first uplink channel, and the resources of the first uplink channel are configured by a high-level signaling; under the condition that the target downlink control information is not received before the first time, the terminal equipment clears the feedback information corresponding to the first downlink channel, or the terminal equipment does not demodulate the second downlink channel; the target downlink control information is used for indicating the terminal equipment to send feedback information corresponding to the first downlink channel before or during the time unit where the first uplink channel is located.

Description

Channel feedback method, terminal equipment and network equipment

Technical Field

The embodiment of the application relates to the field of communication, and more particularly, to a channel feedback method, a terminal device and a network device.

Background

In a New Radio (NR) system, in order to reduce complexity of terminal implementation, a hybrid automatic repeat request (HARQ) feedback order (HARQ order) is defined for data processing in one carrier. In addition, for a New air-interface (New Radio-based access to unlicensed spectrum, NR-U) system on an unlicensed spectrum, a special value, i.e., an invalid value (inapplicable value), of HARQ feedback timing (HARQ timing) is introduced in downlink control information (Downlink Control Information, DCI), where the value indicates that a transmission time and a resource of Acknowledgement (ACK)/negative Acknowledgement (Negative Acknowledgement, NACK) feedback information corresponding to a physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) scheduled by the DCI cannot be determined temporarily. However, in the case that the value of HARQ timing is an invalid value, the HARQ order may be out-of-order, which affects the normal feedback of the channel.

Disclosure of Invention

The embodiment of the application provides a channel feedback method, terminal equipment and network equipment, which can avoid the problem of disorder when a terminal receives downlink data under the condition that the value of a feedback time sequence corresponding to a downlink channel is an invalid value.

In a first aspect, a channel feedback method is provided, the method comprising:

the terminal equipment receives configuration information, wherein the configuration information is used for configuring the terminal equipment to receive a second downlink channel after a first downlink channel, the value of a feedback time sequence corresponding to the first downlink channel is an invalid value, the feedback information corresponding to the second downlink channel is transmitted through a first uplink channel, and the resources of the first uplink channel are configured by high-level signaling;

under the condition that the target downlink control information is not received before the first time, the terminal equipment clears the feedback information corresponding to the first downlink channel, or the terminal equipment does not demodulate the second downlink channel;

the target downlink control information is used for indicating the terminal equipment to send feedback information corresponding to the first downlink channel before the time unit where the first uplink channel is located, or the target downlink control information is used for indicating the terminal equipment to send feedback information corresponding to the first downlink channel in the time unit where the first uplink channel is located.

In a second aspect, a channel feedback method is provided, the method comprising:

the terminal equipment receives a first downlink channel, wherein the value of a feedback time sequence corresponding to the first downlink channel is an invalid value;

The terminal equipment receives a target downlink control channel after the first downlink channel, wherein the target downlink control channel is used for indicating a first uplink channel, and feedback information corresponding to the first downlink channel is transmitted through the first uplink channel;

the terminal device does not expect to receive a second downlink channel after the first downlink channel and before the first uplink channel, wherein feedback information corresponding to the second downlink channel is transmitted through a second uplink channel configured by higher layer signaling, and the second uplink channel is before a time unit where the first uplink channel is located, or the second uplink channel is in a time unit where the first uplink channel is located.

In a third aspect, a channel feedback method is provided, the method comprising:

the network equipment sends a first downlink channel, wherein the value of a feedback time sequence corresponding to the first downlink channel is an invalid value;

the network equipment sends a target downlink control channel after the first downlink channel, wherein the target downlink control channel is used for indicating a first uplink channel, and feedback information corresponding to the first downlink channel is transmitted through the first uplink channel;

the network device does not send a second downlink channel after the first downlink channel and before the first uplink channel, wherein feedback information corresponding to the second downlink channel is transmitted through a second uplink channel configured by higher layer signaling, and the second uplink channel is before a time unit where the first uplink channel is located, or the second uplink channel is in a time unit where the first uplink channel is located.

In a fourth aspect, a terminal device is provided for performing the method in the first aspect.

Specifically, the terminal device comprises functional modules for performing the method in the first aspect described above.

In a fifth aspect, a terminal device is provided for performing the method in the second aspect.

Specifically, the terminal device comprises a functional module for performing the method in the second aspect described above.

In a sixth aspect, a network device is provided for performing the method in the third aspect.

Specifically, the network device comprises functional modules for performing the method in the third aspect described above.

In a seventh aspect, a terminal device is provided, comprising a processor and a 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 to execute the method in the first aspect.

In an eighth aspect, a terminal device is provided that includes a processor and a memory. The memory is for storing a computer program and the processor is for calling and running the computer program stored in the memory for performing the method of the second aspect described above.

In a ninth aspect, a network device is provided that includes a processor and a memory. The memory is for storing a computer program and the processor is for calling and running the computer program stored in the memory for performing the method of the third aspect described above.

In a tenth aspect, there is provided an apparatus for implementing the method of any one of the first to third aspects.

Specifically, the device comprises: a processor for calling and running a computer program from a memory, causing a device in which the apparatus is installed to perform the method of any of the first to third aspects as described above.

In an eleventh aspect, a computer-readable storage medium is provided for storing a computer program that causes a computer to execute the method of any one of the above first to third aspects.

In a twelfth aspect, there is provided a computer program product comprising computer program instructions for causing a computer to perform the method of any one of the first to third aspects above.

In a thirteenth aspect, there is provided a computer program which, when run on a computer, causes the computer to perform the method of any one of the first to third aspects described above.

By means of the technical scheme of the first aspect, under the condition that the target downlink control information is not received before the first time, the terminal equipment can clear the feedback information corresponding to the first downlink channel, or the terminal equipment does not demodulate the second downlink channel, so that the problem of disorder when the terminal equipment receives downlink data can be avoided. In addition, by introducing the first time to limit the receiving of the target downlink control information, the time lower limit of the feedback information corresponding to the first downlink channel can be determined more accurately, the terminal equipment and the network equipment are guaranteed to be consistent in understanding the effectiveness of the feedback information corresponding to the first downlink channel, or the time lower limit of the second downlink channel which is not demodulated can be determined more accurately.

By means of the technical scheme of the second aspect, the terminal equipment does not expect to receive the second downlink channel after the first downlink channel and before the first uplink channel, and from the aspect of scheduling of the network equipment, the problem of disorder when the terminal equipment receives downlink data is avoided.

By the technical scheme of the third aspect, the network device does not send the second downlink channel after the first downlink channel and before the first uplink channel, and from the aspect of scheduling of the network device, the problem of disorder when the terminal device receives downlink data is avoided.

Drawings

Fig. 1 is a schematic diagram of a communication system architecture provided in an embodiment of the present application.

Fig. 2 is a schematic diagram reflecting the feedback sequence provided in the present application.

Fig. 3 is a schematic diagram reflecting the disorder provided by the present application.

Fig. 4 is a schematic flow chart of a channel feedback method provided according to an embodiment of the present application.

Fig. 5 is a schematic diagram of a channel feedback provided in accordance with an embodiment of the present application.

Fig. 6 is a schematic diagram of another channel feedback provided in accordance with an embodiment of the present application.

Fig. 7 is a schematic diagram of yet another channel feedback provided in accordance with an embodiment of the present application.

Fig. 8 is a schematic flow chart of another channel feedback method provided according to an embodiment of the present application.

Fig. 9 is a schematic diagram of yet another channel feedback provided in accordance with an embodiment of the present application.

Fig. 10 is a schematic block diagram of a terminal device according to an embodiment of the present application.

Fig. 11 is a schematic block diagram of another terminal device provided according to an embodiment of the present application.

Fig. 12 is a schematic block diagram of a network device provided according to an embodiment of the present application.

Fig. 13 is a schematic block diagram of a communication device provided according to an embodiment of the present application.

Fig. 14 is a schematic block diagram of an apparatus provided in accordance with an embodiment of the present application.

Fig. 15 is a schematic block diagram of a communication system provided according to an embodiment of the present application.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden for the embodiments herein, are intended to be within the scope of the present application.

The technical solution of the embodiment of the application can be applied to various communication systems, for example: global system for mobile communications (Global System of Mobile communication, GSM), code division multiple access (Code Division Multiple Access, CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, general packet Radio service (General Packet Radio Service, GPRS), long term evolution (Long Term Evolution, LTE) system, long term evolution advanced (Advanced long term evolution, LTE-a) system, new Radio, NR system evolution system, LTE over unlicensed spectrum (LTE-based access to unlicensed spectrum, LTE-U) system, NR over unlicensed spectrum (NR-based access to unlicensed spectrum, NR-U) system, non-terrestrial communication network (Non-Terrestrial Networks, NTN) system, universal mobile telecommunication system (Universal Mobile Telecommunication System, UMTS), wireless local area network (Wireless Local Area Networks, WLAN), wireless fidelity (Wireless Fidelity, wiFi), fifth Generation communication (5 th-Generation, 5G) system, or other communication system, etc.

Generally, the number of connections supported by the conventional communication system is limited and easy to implement, however, with the development of communication technology, the mobile communication system will support not only conventional communication but also, for example, device-to-Device (D2D) communication, machine-to-machine (Machine to Machine, M2M) communication, machine type communication (Machine Type Communication, MTC), inter-vehicle (Vehicle to Vehicle, V2V) communication, or internet of vehicles (Vehicle to everything, V2X) communication, etc., and the embodiments of the present application may also be applied to these communication systems.

Optionally, the communication system in the embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, and a Stand Alone (SA) fabric scenario.

Optionally, the communication system in the embodiments of the present application may be applied to unlicensed spectrum, where unlicensed spectrum may also be considered as shared spectrum; alternatively, the communication system in the embodiments of the present application may also be applied to licensed spectrum, where licensed spectrum may also be considered as non-shared spectrum.

Embodiments of the present application describe various embodiments in connection with network devices and terminal devices, where a terminal device may also be referred to as a User Equipment (UE), access terminal, subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, user Equipment, or the like.

The terminal device may be a STATION (ST) in a WLAN, may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) STATION, a personal digital assistant (Personal Digital Assistant, PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle device, a wearable device, a terminal device in a next generation communication system such as an NR network, or a terminal device in a future evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.

In embodiments of the present application, the terminal device may be deployed on land, including indoor or outdoor, hand-held, wearable or vehicle-mounted; can also be deployed on the water surface (such as ships, etc.); but may also be deployed in the air (e.g., on aircraft, balloon, satellite, etc.).

In the embodiment of the present application, the terminal device may be a Mobile Phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an augmented Reality (Augmented Reality, AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in unmanned driving (self driving), a wireless terminal device in remote medical (remote medical), a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation security (transportation safety), a wireless terminal device in smart city (smart city), or a wireless terminal device in smart home (smart home), and the like.

By way of example, and not limitation, in embodiments of the present application, the terminal device may also be a wearable device. The wearable device can also be called as a wearable intelligent device, and is a generic name for intelligently designing daily wear by applying wearable technology and developing wearable devices, such as glasses, gloves, watches, clothes, shoes and the like. The wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also can realize a powerful function through software support, data interaction and cloud interaction. The generalized wearable intelligent device includes full functionality, large size, and may not rely on the smart phone to implement complete or partial functionality, such as: smart watches or smart glasses, etc., and focus on only certain types of application functions, and need to be used in combination with other devices, such as smart phones, for example, various smart bracelets, smart jewelry, etc. for physical sign monitoring.

In this embodiment of the present application, the network device may be a device for communicating with a mobile device, where the network device may be an Access Point (AP) in a WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, a relay station or an Access Point, a vehicle device, a wearable device, a network device or a base station (gNB) in an NR network, a network device in a PLMN network of future evolution, or a network device in an NTN network, etc.

By way of example and not limitation, in embodiments of the present application, a network device may have a mobile nature, e.g., the network device may be a mobile device. Alternatively, the network device may be a satellite, a balloon station. For example, the satellite may be a Low Earth Orbit (LEO) satellite, a medium earth orbit (medium earth orbit, MEO) satellite, a geosynchronous orbit (geostationary earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite, or the like. Alternatively, the network device may be a base station disposed on land, in a water area, or the like.

In this embodiment of the present application, a network device may provide a service for a cell, where a terminal device communicates with the network device through a transmission resource (e.g., a frequency domain resource, or a spectrum resource) used by the cell, where the cell may be a cell corresponding to a network device (e.g., a base station), and the cell may belong to a macro base station, or may belong to a base station corresponding to a Small cell (Small cell), where the Small cell may include: urban cells (Metro cells), micro cells (Micro cells), pico cells (Pico cells), femto cells (Femto cells) and the like, and the small cells have the characteristics of small coverage area and low transmitting power and are suitable for providing high-rate data transmission services.

Exemplary, a communication system 100 to which embodiments of the present application apply 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, terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within the coverage area.

Fig. 1 illustrates one network device and two terminal devices by way of example, and alternatively, the communication system 100 may include a plurality of network devices and may include other numbers of terminal devices within the coverage area of each network device, which is not limited in this embodiment of the present application.

Optionally, the communication system 100 may further include a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application.

It should be understood that a device having a communication function in a network/system in an embodiment 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 with communication functions, where the network device 110 and the terminal device 120 may be 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 a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application.

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

The terminology used in the description section of the present application is for the purpose of describing particular embodiments of the present application only and is not intended to be limiting of the present application. The terms "first," "second," "third," and "fourth" and the like in the description and in the claims of this application and in the drawings, are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

It should be understood that, in the embodiments of the present application, the "indication" may be a direct indication, an indirect indication, or an indication having an association relationship. For example, a indicates B, which may mean that a indicates B directly, e.g., B may be obtained by a; it may also indicate that a indicates B indirectly, e.g. a indicates C, B may be obtained by C; it may also be indicated that there is an association between a and B.

In the description of the embodiments of the present application, the term "corresponding" may indicate that there is a direct correspondence or an indirect correspondence between the two, or may indicate that there is an association between the two, or may indicate a relationship between the two and the indicated, configured, or the like.

Unlicensed spectrum is a nationally and regionally divided spectrum that can be used for radio communications and is generally considered to be a shared spectrum, i.e., communication devices in different communication systems can use the spectrum as long as the regulatory requirements set by the country or region on the spectrum are met, without requiring a proprietary spectrum license to be applied to the government. In order for individual communication systems using unlicensed spectrum for wireless communication to co-exist friendly over the spectrum, some countries or regions have stipulated regulatory requirements that must be met using unlicensed spectrum. For example, in some regions, the communication device follows the "listen before talk" principle, i.e. the communication device needs to perform channel interception before performing signal transmission on the channel of the unlicensed spectrum, and only when the channel interception result is that the channel is idle, the communication device can perform signal transmission; if the channel listening result of the communication device on the channel of the unlicensed spectrum is that the channel is busy, the communication device is unable to signal. To ensure fairness, the communication device cannot use the unlicensed spectrum channel for signal transmission for longer than the maximum channel occupation time (Maximum Channel Occupation Time, MCOT) in one transmission. With the development of wireless communication technology, both LTE systems and NR systems consider to be networked on unlicensed spectrum, so as to use unlicensed spectrum for data traffic transmission.

In order to facilitate understanding of the technical solution of the present application, a hybrid automatic repeat request-acknowledgement (Hybrid Automatic Repeat request Acknowledgement, HARQ-ACK) codebook (codebook) generation manner is described below.

The NR-U can support various HARQ-ACK codebook (codebook) generation modes, including: type 1 (Type-1) HARQ-ACK codebook, type 2 (Type-2) HARQ-ACK codebook, enhanced Type 2 (Enhanced Type-2) HARQ-ACK codebook, type 3 (Type-3) HARQ-ACK codebook, where Type-1, type-2 codebook is two feedback information codebooks supported by NR release15, rel-15, and Enhanced Type-2 and Type-3 codebooks are two feedback information codebooks newly introduced by release16, rel-16 NR-U. The terminal does use codebook based on higher layer signaling sent by the base station, wherein the Type-1, type-2 and Enhanced Type-2 codebooks are not configured at the same time, and the Type 3 codebook can be configured independently of the Type-1, type-2 and Enhanced Type-2 (i.e. can be configured in a superposition mode).

The Enhanced Type-2HARQ-ACK codebook is an ACK/NACK feedback mode based on downlink channel groups, and currently indicates the maximum two downlink channel groups. The base station indicates, through the DCI, the group information to which the PDSCH scheduled by the DCI or the physical downlink control channel (Physical Downlink Control Channel, PDCCH) carrying the DCI belongs. When the base station sends a trigger signaling to instruct the terminal equipment to feed back the ACK/NACK information corresponding to a certain group, the terminal equipment feeds back the feedback information corresponding to all PDSCH or PDCCH belonging to the group to the base station. The base station can trigger the terminal equipment to send the ACK/NACK information of a certain group for a plurality of times, namely, ACK/NACK retransmission is realized.

The Type-3HARQ-ACK codebook includes the manner of ACK/NACK feedback corresponding to all HARQ processes. Specifically, the terminal device supports a maximum of N HARQ processes. When the base station triggers the terminal equipment to perform full-process feedback, no matter how many HARQ processes are actually received by the terminal equipment, the ACK/NACK feedback information corresponding to the N processes is always fed back to the base station. The ACK/NACK information is mapped to a feedback information codebook (codebook) according to the HARQ process number order. ACK/NACK information corresponding to the non-received HARQ process is set as the occupancy information (e.g., NACK).

In order to facilitate understanding of the technical solution of the present application, HARQ feedback timing (HARQ-timing) is described below.

In NR Rel-15, dynamic determination of HARQ feedback timing (HARQ-timing) is supported. The terminal first determines a preconfigured HARQ timing set, and the base station makes k through one numerical value in the DCI indication set. The PDSCH scheduled by the DCI is transmitted in slot (slot) n, and the corresponding ACK/NACK information is transmitted in slot n+k. The preconfigured HARQ timing set includes at most 8 timing values, and is agreed by a protocol for DCI format (format) 1_0 and configured by a base station for DCI format 1_1.

For NR-U of Rel-16, the introduction of a special HARQ timing value, namely an invalid value (inapplicable value), in DCI is considered to be supported, wherein the value indicates that the transmission time and the resource of ACK/NACK feedback information corresponding to the PDSCH scheduled by the DCI cannot be determined temporarily. And the subsequent base station transmits DCI, wherein the DCI is used for triggering the ACK/NACK corresponding to the PDSCH with the HARQ timing being an invalid value before the terminal feedback. The Type-1HARQ-ACK code book does not support HARQ timing invalidation values, and other HARQ-ACK code books may support HARQ timing invalidation values.

In order to facilitate understanding of the technical solution of the present application, the following description will be made on the HARQ feedback sequence (HARQ order).

In order to reduce the complexity of terminal implementation, a relatively harsh timing relationship is defined for data processing within one carrier in NR Rel-15, including: the terminal receives a first PDSCH at a first time, and the corresponding ACK/NACK information is transmitted through a first time slot; the terminal does not expect to receive the second PDSCH with its starting symbol after the first PDSCH starting symbol but with the corresponding ACK/NACK information transmitted through the slot preceding the first slot. For example, as shown in fig. 2, the terminal device receives PDSCH 1, and its corresponding ACK/NACK information is transmitted through slot j; the terminal device does not expect to receive PDSCH 2 and its corresponding ACK/NACK information is transmitted in slot j-1.

However, in the case that the value of HARQ timing is an invalid value, the HARQ order may be out-of-order, which affects the normal feedback of the channel.

For example, as shown in fig. 3, first, the terminal receives DCI 1 to schedule PDSCH 1 transmissions, and the HARQ timing information field therein indicates an invalid value. Then, the terminal receives a Semi-persistent scheduling (Semi-Persistent Scheduling, SPS) PDSCH, ACK/NACK information corresponding to the SPS PDSCH is transmitted on PUCCH 1, and resources of PUCCH 1 are preconfigured through higher layer signaling. As described above, for the PDSCH corresponding to the invalid HARQ timing, the feedback information of the PDSCH 1 cannot be carried in the PUCCH 1 corresponding to the SPS PDSCH because the feedback information of the PDSCH can be triggered and transmitted only by the subsequent DCI. Finally, the terminal receives DCI 2 to schedule PDSCH 2 transmission, the HARQ timing indication in the DCI 2 is an effective value, and the DCI 2 triggers the PDSCH corresponding to invalid HARQ timing to transmit feedback information on the PUCCH 2. The ACK/NACK information corresponding to the PDSCH 1 is transmitted through the PUCCH 2 indicated by the DCI 2, and at the same time, the ACK/NACK information corresponding to the PDSCH 2 is transmitted through the PUCCH 2 indicated by the DCI 2. However, the feedback order (HARQ order) relationship of PDSCH 1 and SPS PDSCH breaks the regulation of HARQ order by NR Rel-15, and out-of-order (out-of-order) is now present. This will affect the complexity and cost of the terminal implementation.

Based on the above problems, the present application proposes a channel feedback scheme, which can avoid the problem of disorder when a terminal receives downlink data in the case that the value of the feedback time sequence corresponding to the downlink channel is an invalid value.

The technical scheme of the present application is described in detail below through specific embodiments.

Fig. 4 is a schematic flow chart of a channel feedback method 200 according to an embodiment of the present application, as shown in fig. 4, the method 200 may include at least some of the following:

s210, the terminal equipment receives configuration information, wherein the configuration information is used for configuring the terminal equipment to receive a second downlink channel after a first downlink channel, the value of a feedback time sequence corresponding to the first downlink channel is an invalid value, the feedback information corresponding to the second downlink channel is transmitted through a first uplink channel, and the resource of the first uplink channel is configured by a high-layer signaling;

s220, under the condition that the target downlink control information is not received before the first time, the terminal equipment clears the feedback information corresponding to the first downlink channel, or the terminal equipment does not demodulate the second downlink channel; the target downlink control information is used for indicating the terminal equipment to send feedback information corresponding to the first downlink channel before the time unit where the first uplink channel is located, or the target downlink control information is used for indicating the terminal equipment to send feedback information corresponding to the first downlink channel in the time unit where the first uplink channel is located.

In the embodiment of the present application, the feedback timing may be HARQ feedback timing (HARQ-timing). The feedback timing corresponding to the first downlink channel has an invalid value (inapplicable value), which indicates that the transmission time and the resource of the feedback information corresponding to the first downlink channel cannot be determined temporarily. And triggering and determining the transmission time and the resource of the feedback information corresponding to the first downlink channel by the subsequently received downlink control information, namely triggering and determining the transmission time and the resource of the feedback information corresponding to the first downlink channel by the target downlink control information.

In the embodiment of the application, the feedback codebook may be at least one of Type-2 HARQ-ACK codebook, enhanced Type-2 HARQ-ACK codebook, and Type-3 HARQ-ACK codebook.

In this embodiment of the present application, the physical meaning of the first time is that, considering the necessary processing delay, the PUCCH indicated by the target downlink control information received after the first time is definitely after the first uplink channel.

It should be noted that, assuming that the terminal device successfully receives the first downlink channel, the feedback information corresponding to the first downlink channel may be ACK; assuming that the terminal device fails to receive the first downlink channel, the feedback information corresponding to the first downlink channel may be NACK. Similarly, assuming that the terminal device successfully receives the second downlink channel, the feedback information corresponding to the second downlink channel may be ACK; assuming that the terminal device fails to receive the second downlink channel, the feedback information corresponding to the second downlink channel may be NACK.

In some embodiments, the terminal device clears the feedback information corresponding to the first downlink channel, which may be also expressed as at least one of the following:

the terminal device discards (skip) feedback information corresponding to the first downlink channel;

the terminal equipment cancels (drop) feedback information corresponding to the first downlink channel;

the terminal device gives up (cancel) the feedback information corresponding to the first downlink channel;

the terminal device does not store (do not buffer) the feedback information corresponding to the first downlink channel.

Optionally, in the embodiment of the present application, the terminal device may determine whether the target downlink control information is received before the first time according to an end position of a PDCCH carrying the target downlink control information.

Optionally, the time unit includes one of:

time slot, sub-slot, at least one time domain symbol.

Optionally, the first downlink channel includes one of:

PDSCH、PDCCH。

for example, in the case that the first downlink channel is PDCCH, the first downlink channel carries first downlink control information, where the first downlink control information is used to indicate SPS resource release, or the first downlink control information is used to indicate secondary cell dormancy (Scell dormant).

Optionally, the second downlink channel is SPS PDSCH.

Optionally, in some embodiments, the terminal device does not demodulate the second downlink channel, including at least one of:

the terminal equipment does not receive the second downlink channel;

the terminal device does not decode the second downlink channel.

That is, the terminal device may avoid the problem of out-of-order when receiving the downlink data by not demodulating the second downlink channel.

Alternatively, in some embodiments, the terminal device may not transmit the first uplink channel. For example, the terminal device may not transmit the first uplink channel in the case where the terminal device does not demodulate the second downlink channel.

Optionally, in some embodiments, the terminal device sends a first feedback codebook after the first uplink channel, where the first feedback codebook includes feedback information bits corresponding to the first downlink channel, and the feedback information bits corresponding to the first downlink channel are set to NACK.

Optionally, in some embodiments, the terminal device sends a second feedback codebook after the first uplink channel, where the second feedback codebook includes feedback information bits corresponding to the second downlink channel, and the feedback information bits corresponding to the second downlink channel are set to NACK.

Note that the first feedback codebook and the second feedback codebook may be the same codebook, or may not be the same codebook, which is not limited in the embodiment of the present application.

Optionally, in this embodiment of the present application, the first time is a start time of the first uplink channel; or alternatively, the first and second heat exchangers may be,

the first time is determined based on a start time of the first uplink channel and a first time interval.

For example, first time-first time interval = start time of first uplink channel.

Optionally, the first time interval is determined according to at least one of:

a downlink shared channel processing time threshold, a downlink control channel processing time threshold, an uplink channel preparation time threshold, an uplink channel multiplexing transmission preparation time threshold, and an uplink channel cancellation processing time threshold.

Alternatively, the downlink shared channel processing time threshold value may be obtained by the following formula 1, wherein the specific parameters in formula 1 may refer to the definition in section 5.3 of the communication standard TS38.214, and are not discussed herein for brevity.

T _proc,1 ＝(N ₁ +d _1,1 +d ₂ )(2048+144)·κ2 ^-μ ·T _C +T _ext Equation 1

Alternatively, the downlink control channel processing time threshold may be referenced to section 10.2 or section 10.3 in the communication standard TS 38.213. For a terminal of processing capability type 2, when the subcarrier spacing is 15kHz, the first time interval=5 (number of time domain symbols); when the subcarrier spacing is 30kHz, the first time interval=5.5 (number of time domain symbols); when the subcarrier spacing is 60kHz, the first time interval=11 (the number of time domain symbols). For a terminal of processing capability type 1, when the subcarrier spacing is 15kHz, the first time interval=10 (number of time domain symbols); when the subcarrier spacing is 30kHz, the first time interval=12 (number of time domain symbols); when the subcarrier spacing is 60kHz, the first time interval=22 (number of time domain symbols); when the subcarrier spacing is 120kHz, the first time interval=25 (the number of time domain symbols).

Alternatively, the uplink channel preparation time threshold value may be obtained by the following formula 2, wherein the specific parameters in formula 2 may refer to the definition in section 6.4 of the communication standard TS38.214, which is not discussed here for brevity.

T _proc,2 ＝max((N ₂ +d _2,1 +d ₂ )(2048+144)·κ2 ^-μ ·T _C +T _ext +T _switch ,d _2,2 ) Equation 2

Alternatively, the uplink channel multiplex transmission preparation time threshold value may be obtained by one of the following formulas 3 to 6, wherein specific parameters in formulas 3 to 6 may be referred to the definition in 9.2.5 section of the communication standard TS38.213, which is not discussed here for brevity.

Alternatively, the uplink channel cancellation processing time threshold may refer to 9 sections in the communication standard TS 38.213. For a terminal of processing capability type 2, when the subcarrier spacing is 15kHz, the first time interval=5 (number of time domain symbols); when the subcarrier spacing is 30kHz, the first time interval=5.5 (number of time domain symbols); when the subcarrier spacing is 60kHz, the first time interval=11 (the number of time domain symbols). For a terminal of processing capability type 1, when the subcarrier spacing is 15kHz, the first time interval=10 (number of time domain symbols); when the subcarrier spacing is 30kHz, the first time interval=12 (number of time domain symbols); when the subcarrier spacing is 60kHz, the first time interval=23 (the number of time domain symbols); when the subcarrier spacing is 120kHz, the first time interval=36 (the number of time domain symbols).

Therefore, in the embodiment of the present application, under the condition that the target downlink control information is not received before the first time, the terminal device may clear the feedback information corresponding to the first downlink channel, or the terminal device does not demodulate the second downlink channel, so that the problem of disorder when the terminal device receives the downlink data may be avoided. In addition, by introducing the first time to limit the receiving of the target downlink control information, the time lower limit of the feedback information corresponding to the first downlink channel can be determined more accurately, the terminal equipment and the network equipment are guaranteed to be consistent in understanding the effectiveness of the feedback information corresponding to the first downlink channel, or the time lower limit of the second downlink channel which is not demodulated can be determined more accurately.

The scheme in the above-described channel feedback method 200 is detailed below by embodiments 1 to 3.

In embodiment 1, as shown in fig. 5, the terminal device receives DCI 1, where DCI 1 is used to schedule PDSCH 1 transmission, and the HARQ timing indication is an invalid value in DCI 1. After that, the terminal equipment receives SPS PDSCH, and PUCCH 1 resources carrying feedback information of the SPS PDSCH are configured by high-layer signaling (comprising time slots or sub-time slots of the PUCCH 1, time-frequency domain resources of the PUCCH 1 in the time slots/sub-time slots, spread spectrum sequences and the like). If the terminal device does not receive other DCI triggering feedback information corresponding to PDSCH 1 through PUCCH 2, PUCCH 2 is within or before the slot/sub-slot where PUCCH 1 is located, the terminal device discards, cancels, discards, clears, or does not store feedback information corresponding to PDSCH 1.

The embodiment 1 can effectively avoid the problem of out-of-order (out-of-order) when the terminal receives downlink data, and is simple to implement.

In embodiment 2, as shown in fig. 6, the terminal device receives DCI 1, where DCI 1 is used to schedule PDSCH 1 transmission, and the HARQ timing indication is an invalid value in DCI 1. The terminal device receives SPS PDSCH after PDSCH 1, and PUCCH 1 resources carrying feedback information of the SPS PDSCH are configured by high-layer signaling (including time-frequency domain resources, spread spectrum sequences and the like of the time slot or sub-time slot of the PUCCH 1, wherein the time slot or sub-time slot of the PUCCH 1 is positioned, and the PUCCH 1 is positioned in the time slot/sub-time slot). If the terminal device does not receive the target DCI before the time t0 (preferably, whether it is determined before t0 according to the end position of the PDCCH carrying the target DCI) and indicates that the terminal device transmits feedback information corresponding to the PDSCH 1 in or before the time unit (slot or sub-slot or N time domain symbols) where the PUCCH 1 is located, the terminal discards (skip), cancels (drop), discards (cancel), clears (clear), or does not store feedback information corresponding to the PDSCH 1.

Embodiment 2 can effectively avoid out-of-order problem (out-of-order) when the terminal receives downlink data. In contrast to embodiment 1, embodiment 2 introduces a time limit t0 for receiving the target DCI. The lower limit of time for discarding the feedback information of the PDSCH 1 can be more precisely determined in consideration of the actual processing delay of the terminal. Ensuring that the terminal device and the network device understand the validity of the feedback information consistently.

In embodiment 3, as shown in fig. 7, the terminal device receives DCI 1, where DCI 1 is used to schedule PDSCH 1 transmission, and the HARQ timing indication is an invalid value in DCI 1. If the base station transmits DCI 2 indicating that PUCCH 2 carries feedback information of PDSCH 1, where PUCCH 2 is after a slot/sub-slot where PUCCH 1 is located, the terminal device discards receiving and decoding (skip decoding) the SPS PDSCH. For SPS PDSCH, the terminal device may generate NACK information.

Embodiment 3 may not avoid out-of-order from a scheduling perspective, but allows the terminal device not to demodulate the SPS PDSCH. On the premise of ensuring that the complexity of terminal implementation is not introduced, certain flexibility is brought to base station scheduling. E.g., no data per se on SPS PDSCH to be transmitted, or higher priority dynamic traffic to be transmitted, the base station may dynamically schedule PDSCH 2 transmissions.

Fig. 8 is a schematic flow chart of a channel feedback method 300 according to an embodiment of the present application, as shown in fig. 8, the method 300 may include at least some of the following:

s310, the network equipment sends a first downlink channel, wherein the value of a feedback time sequence corresponding to the first downlink channel is an invalid value;

s320, the terminal equipment receives the first downlink channel;

S330, the network device sends a target downlink control channel after the first downlink channel, wherein the target downlink control channel is used for indicating a first uplink channel, and feedback information corresponding to the first downlink channel is transmitted through the first uplink channel;

s340, the terminal equipment receives the target downlink control channel after the first downlink channel;

s350, the terminal device does not expect to receive a second downlink channel after the first downlink channel and before the first uplink channel, where feedback information corresponding to the second downlink channel is transmitted through a second uplink channel configured by higher layer signaling, and the second uplink channel is before a time unit where the first uplink channel is located, or the second uplink channel is in a time unit where the first uplink channel is located;

and S360, the network equipment does not send a second downlink channel after the first downlink channel and before the first uplink channel, wherein feedback information corresponding to the second downlink channel is transmitted through a second uplink channel configured by high-layer signaling, and the second uplink channel is before a time unit where the first uplink channel is located, or the second uplink channel is in the time unit where the first uplink channel is located.

Optionally, the time unit includes one of:

time slot, sub-slot, at least one time domain symbol.

Optionally, the first downlink channel includes one of:

PDSCH、PDCCH。

Optionally, the second downlink channel is SPS PDSCH.

Alternatively, in some embodiments, the first and second processing steps,

the terminal device does not demodulate the second downlink channel, or,

the terminal device either gives up receiving the second downlink channel, or,

the terminal device foregoes decoding the second downlink channel.

That is, even if the network device schedules the terminal device to receive the second downlink channel, in order to avoid the problem of out-of-order when the terminal receives the downlink data, the terminal device does not demodulate, discard the reception, or discard decoding the second downlink channel.

Alternatively, in some embodiments, the terminal device may not transmit the first uplink channel. Accordingly, the network device does not expect to receive the first uplink channel. That is, the terminal device does not feed back the feedback information corresponding to the first downlink channel through the first uplink channel. For example, the terminal device may not transmit the first uplink channel in case the terminal device receives the second downlink channel after the first downlink channel and before the first uplink channel. So as to avoid the problem of disorder when the terminal receives the downlink data.

Optionally, in some embodiments, the terminal device sends a feedback codebook after the first uplink channel, where the feedback codebook includes a feedback information bit corresponding to the second downlink channel, and the bit is set to NACK.

Correspondingly, the network device receives a feedback codebook after the first uplink channel, wherein the feedback codebook comprises feedback information bits corresponding to the second downlink channel, and the bits are set to be NACK.

Therefore, in the embodiment of the present application, the terminal device does not expect to receive the second downlink channel after the first downlink channel and before the first uplink channel, so as to avoid the problem of out-of-order when the terminal device receives downlink data from the aspect of scheduling by the network device. In addition, the network equipment does not send the second downlink channel after the first downlink channel and before the first uplink channel, so that the problem of disorder when the terminal equipment receives downlink data is avoided from the scheduling angle of the network equipment.

The scheme in the above-described channel feedback method 300 is detailed below by embodiment 4.

In embodiment 4, as shown in fig. 9, the terminal device receives DCI 1, where DCI 1 is used to schedule PDSCH 1 transmission, and the HARQ timing indication is an invalid value in DCI 1. In addition, the terminal equipment receives SPS PDSCH, and PUCCH 1 resources carrying feedback information of the SPS PDSCH are configured by high-layer signaling (including time-frequency domain resources, spread spectrum sequences and the like of the time slot or sub-time slot of the PUCCH 1, wherein the time slot or sub-time slot of the PUCCH 1 is positioned, and the PUCCH 1 is positioned in the time slot/sub-time slot). The base station should transmit feedback information indicating that PUCCH 2 carries PDSCH 1 by DCI 2, wherein PUCCH 2 is in or before the slot/sub-slot in which PUCCH 1 is located. If the terminal equipment does not receive the DCI 2, the DCI 2 is lost, and the behavior of the terminal equipment is not explicitly defined. Namely, from the base station scheduling point of view, the problem of disorder when the terminal receives downlink data is avoided. Is most efficient from a system efficiency point of view and the terminal implementation is the simplest. The DCI 2 loss is a small probability event, and the terminal can determine that the DCI 2 loss is caused, so that the processing can be realized by itself, and the flexibility in the realization of the terminal is reserved.

The method embodiments of the present application are described in detail above in connection with fig. 4 to 9, and the apparatus embodiments of the present application are described in detail below in connection with fig. 10 to 15, it being understood that the apparatus embodiments and the method embodiments correspond to each other, and similar descriptions may refer to the method embodiments.

Fig. 10 shows a schematic block diagram of a terminal device 400 according to an embodiment of the present application. As shown in fig. 10, the terminal device 400 includes:

a communication unit 410 and a processing unit 420,

the communication unit 410 is configured to receive configuration information, where the configuration information is configured to configure the terminal device to receive a second downlink channel after a first downlink channel, where a value of a feedback timing sequence corresponding to the first downlink channel is an invalid value, feedback information corresponding to the second downlink channel is transmitted through a first uplink channel, and a resource of the first uplink channel is configured by a higher layer signaling;

in the case that the target downlink control information is not received before the first time, the processing unit 420 is configured to clear the feedback information corresponding to the first downlink channel, or the processing unit 420 is configured to not demodulate the second downlink channel;

Optionally, the processing unit 420 does not demodulate the second downlink channel, including at least one of:

the processing unit 420 does not receive the second downlink channel;

the processing unit 420 does not decode the second downlink channel.

Optionally, the communication unit 410 is further configured to not send the first uplink channel.

Optionally, the communication unit 410 is further configured to send a first feedback codebook after the first uplink channel, where the first feedback codebook includes feedback information bits corresponding to the first downlink channel, and the feedback information bits corresponding to the first downlink channel are set to be negative acknowledgement NACK.

Optionally, the communication unit 410 is further configured to send a second feedback codebook after the first uplink channel, where the second feedback codebook includes feedback information bits corresponding to the second downlink channel, and the feedback information bits corresponding to the second downlink channel are set to NACK.

Optionally, the first time is a start time of the first uplink channel; or alternatively, the first and second heat exchangers may be,

Optionally, the first time interval is determined according to at least one of:

Optionally, the processing unit 420 is further configured to determine whether the target downlink control information is received before the first time according to an end position of a physical downlink control channel PDCCH carrying the target downlink control information.

Optionally, the time unit includes one of:

time slot, sub-slot, at least one time domain symbol.

Optionally, the first downlink channel includes one of:

physical downlink shared channel PDSCH, PDCCH.

Optionally, in the case that the first downlink channel is a PDCCH, the first downlink channel carries first downlink control information, where the first downlink control information is used to indicate a release of SPS resources for semi-persistent scheduling, or the first downlink control information is used to indicate dormancy of the secondary cell.

Optionally, the second downlink channel is SPS PDSCH.

Alternatively, in some embodiments, the communication unit may be a communication interface or transceiver, or an input/output interface of a communication chip or a system on a chip. The processing unit 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 the terminal device in the embodiment of the method of the present application, and the foregoing and other operations and/or functions of each unit in the terminal device 400 are respectively for implementing the corresponding flow of the terminal device in the method 200 shown in fig. 4, which is not described herein for brevity.

Fig. 11 shows a schematic block diagram of a terminal device 500 according to an embodiment of the present application. As shown in fig. 11, the terminal device 500 includes:

a communication unit 510, configured to receive a first downlink channel, where a value of a feedback timing sequence corresponding to the first downlink channel is an invalid value;

the communication unit 510 is further configured to receive a target downlink control channel after the first downlink channel, where the target downlink control channel is used to indicate a first uplink channel, and feedback information corresponding to the first downlink channel is transmitted through the first uplink channel;

the communication unit 510 is further configured to not expect to receive a second downlink channel after the first downlink channel and before the first uplink channel, where feedback information corresponding to the second downlink channel is transmitted through a second uplink channel configured by higher layer signaling, and the second uplink channel is before a time unit where the first uplink channel is located, or the second uplink channel is in a time unit where the first uplink channel is located.

Optionally, the terminal device 500 further includes: the processing unit 520 may be configured to process,

the communication unit 510 is configured to refrain from receiving the second downlink channel, or,

the processing unit 520 is configured to forego decoding the second downlink channel.

Optionally, the communication unit 510 is further configured to not send the first uplink channel.

Optionally, the communication unit 510 is further configured to send a feedback codebook after the first uplink channel, where the feedback codebook includes a feedback information bit corresponding to the second downlink channel, and the bit is set to be a negative acknowledgement NACK.

Optionally, the time unit includes one of:

time slot, sub-slot, at least one time domain symbol.

Optionally, the first downlink channel includes one of:

physical downlink shared channel PDSCH, physical downlink control channel PDCCH.

Optionally, the second downlink channel is SPS PDSCH.

It should be understood that the terminal device 500 according to the embodiment of the present application may correspond to the terminal device in the embodiment of the method of the present application, and the foregoing and other operations and/or functions of each unit in the terminal device 500 are respectively for implementing the corresponding flow of the terminal device in the method 300 shown in fig. 8, which is not described herein for brevity.

Fig. 12 shows a schematic block diagram of a network device 600 according to an embodiment of the present application. As shown in fig. 12, the network device 600 includes:

a communication unit 610, configured to send a first downlink channel, where a value of a feedback timing sequence corresponding to the first downlink channel is an invalid value;

the communication unit 610 is further configured to send a target downlink control channel after the first downlink channel, where the target downlink control channel is used to indicate a first uplink channel, and feedback information corresponding to the first downlink channel is transmitted through the first uplink channel;

the communication unit 610 is further configured to not send a second downlink channel after the first downlink channel and before the first uplink channel, where feedback information corresponding to the second downlink channel is transmitted through a second uplink channel configured by higher layer signaling, and the second uplink channel is before a time unit where the first uplink channel is located, or the second uplink channel is in a time unit where the first uplink channel is located.

Optionally, the communication unit 610 is further configured to not expect to receive the first uplink channel.

Optionally, the communication unit 610 is further configured to receive a feedback codebook after the first uplink channel, where the feedback codebook includes a feedback information bit corresponding to the second downlink channel, and the bit is set to be a negative acknowledgement NACK.

Optionally, the time unit includes one of:

time slot, sub-slot, at least one time domain symbol.

Optionally, the first downlink channel includes one of:

Optionally, the second downlink channel is SPS PDSCH.

It should be understood that the network device 600 according to the embodiment of the present application may correspond to the network device in the embodiment of the method of the present application, and the foregoing and other operations and/or functions of each unit in the network device 600 are respectively for implementing the corresponding flow of the network device in the method 300 shown in fig. 8, which is not described herein for brevity.

Fig. 13 is a schematic structural diagram of a communication device 700 provided in an embodiment of the present application. The communication device 700 shown in fig. 13 comprises a processor 710, from which the processor 710 may call and run a computer program to implement the method in the embodiments of the present application.

Optionally, as shown in fig. 13, the communication device 700 may further comprise a memory 720. Wherein the processor 710 may call and run a computer program from the memory 720 to implement the methods in embodiments of the present application.

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

Optionally, as shown in fig. 13, the communication device 700 may further include a transceiver 730, and the processor 710 may control the transceiver 730 to communicate with other devices, and in particular, may send information or data to other devices, or receive information or data sent by other devices.

Among other things, transceiver 730 may include a transmitter and a receiver. Transceiver 730 may further include antennas, the number of which may be one or more.

Optionally, the communication device 700 may be specifically a network device in the embodiment of the present application, and the communication device 700 may implement a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the communication device 700 may be specifically a mobile terminal/terminal device in the embodiment of the present application, and the communication device 700 may implement a corresponding flow implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

Fig. 14 is a schematic structural view of an apparatus of an embodiment of the present application. The apparatus 800 shown in fig. 14 includes a processor 810, and the processor 810 may call and run a computer program from a memory to implement the methods in the embodiments of the present application.

Optionally, as shown in fig. 14, the apparatus 800 may further include a memory 820. Wherein the processor 810 may call and run a computer program from the memory 820 to implement the methods in embodiments of the present application.

Wherein the memory 820 may be a separate device from the processor 810 or may be integrated into the processor 810.

Optionally, the apparatus 800 may further comprise an input interface 830. The processor 810 may control the input interface 830 to communicate with other devices or chips, and in particular, may obtain information or data sent by other devices or chips.

Optionally, the apparatus 800 may further comprise an output interface 840. The processor 810 may control the output interface 840 to communicate with other devices or chips, and in particular, may output information or data to other devices or chips.

Optionally, the apparatus may be applied to a network device in the embodiments of the present application, and the apparatus may implement a corresponding flow implemented by the network device in each method in the embodiments of the present application, which is not described herein for brevity.

Optionally, the apparatus may be applied to a mobile terminal/terminal device in the embodiment of the present application, and the apparatus may implement a corresponding flow implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

Alternatively, the device mentioned in the embodiments of the present application may also be a chip. For example, a system-on-chip or a system-on-chip, etc.

Fig. 15 is a schematic block diagram of a communication system 900 provided in an embodiment of the present application. As shown in fig. 15, the communication system 900 includes a terminal device 910 and a network device 920.

The terminal device 910 may be configured to implement the corresponding functions implemented by the terminal device in the above method, and the network device 920 may be configured to implement the corresponding functions implemented by the network device in the above method, which are not described herein for brevity.

It should be appreciated that the processor of an embodiment 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 implemented by integrated logic circuits of hardware in a processor or instructions in software form. The processor may be a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks 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 a method disclosed in connection with the embodiments of the present application may be embodied directly in hardware, in a decoded processor, or in a combination of hardware and software modules in a decoded processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

It will be appreciated that the memory in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and Direct 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 memory is exemplary but not limiting, and for example, the memory in the embodiments of the present application may be Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), direct RAM (DR RAM), and the like. That is, the memory in embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

Embodiments of the present application also provide a computer-readable storage medium for storing a computer program.

Optionally, the computer readable storage medium may be applied to a network device in the embodiments of the present application, and the computer program causes a computer to execute a corresponding flow implemented by the network device in each method in the embodiments of the present application, which is not described herein for brevity.

Optionally, the computer readable storage medium may be applied to a mobile terminal/terminal device in the embodiments of the present application, and the computer program causes a computer to execute a corresponding procedure implemented by the mobile terminal/terminal device in each method of the embodiments of the present application, which is not described herein 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 a network device in the embodiments of the present application, and the computer program instructions cause the computer to execute corresponding flows implemented by the network device in the methods in the embodiments of the present application, which are not described herein for brevity.

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

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to a network device in the embodiments of the present application, and when the computer program runs on a computer, the computer is caused to execute a corresponding flow implemented by the network device in each method in the embodiments of the present application, which is not described herein for brevity.

Optionally, the computer program may be applied to a mobile terminal/terminal device in the embodiments of the present application, where the computer program when run on a computer causes the computer to execute corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiments of the present application, and for brevity, will not be described herein.

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 solution. 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 will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown 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 may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in 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. For such understanding, the technical solutions of the present application may be embodied in essence or in a part contributing to the prior art or in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely 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 think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to 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 channel feedback method, comprising:

the method comprises the steps that a terminal device receives configuration information, wherein the configuration information is used for configuring the terminal device to receive a second downlink channel after a first downlink channel, the value of a feedback time sequence corresponding to the first downlink channel is an invalid value, the feedback information corresponding to the second downlink channel is transmitted through a first uplink channel, and resources of the first uplink channel are configured by high-layer signaling;

under the condition that the target downlink control information is not received before the first time, the terminal equipment clears the feedback information corresponding to the first downlink channel, or the terminal equipment does not demodulate the second downlink channel;

the target downlink control information is used for indicating the terminal equipment to send feedback information corresponding to the first downlink channel before a time unit where the first uplink channel is located, or the target downlink control information is used for indicating the terminal equipment to send feedback information corresponding to the first downlink channel in the time unit where the first uplink channel is located.
The method of claim 1, wherein the terminal device does not demodulate the second downlink channel, comprising at least one of:

the terminal equipment does not receive the second downlink channel;

the terminal device does not decode the second downlink channel.
The method of claim 1 or 2, wherein the method further comprises:

and the terminal equipment does not send the first uplink channel.
A method according to any one of claims 1 to 3, wherein the method further comprises:

and the terminal equipment sends a first feedback codebook after the first uplink channel, wherein the first feedback codebook comprises feedback information bits corresponding to the first downlink channel, and the feedback information bits corresponding to the first downlink channel are set to be negative acknowledgement NACK.
The method of any one of claims 1 to 4, wherein the method further comprises:

and the terminal equipment sends a second feedback codebook after the first uplink channel, wherein the second feedback codebook comprises feedback information bits corresponding to the second downlink channel, and the feedback information bits corresponding to the second downlink channel are set to be NACK.
The method according to any one of claim 1 to 5,

the first time is the starting time of the first uplink channel; or alternatively, the first and second heat exchangers may be,

the first time is determined according to a start time and a first time interval of the first uplink channel.
The method of claim 6, wherein the first time interval is determined according to at least one of:

a downlink shared channel processing time threshold, a downlink control channel processing time threshold, an uplink channel preparation time threshold, an uplink channel multiplexing transmission preparation time threshold, and an uplink channel cancellation processing time threshold.
The method of any one of claims 1 to 7, wherein the method further comprises:

and the terminal equipment determines whether the target downlink control information is received before the first time according to the ending position of the physical downlink control channel PDCCH carrying the target downlink control information.
The method of any one of claims 1 to 8, wherein the time unit comprises one of:

time slot, sub-slot, at least one time domain symbol.
The method of any of claims 1 to 9, wherein the first downlink channel comprises one of:

Physical downlink shared channel PDSCH, PDCCH.
The method of claim 10, wherein,

and under the condition that the first downlink channel is a PDCCH, the first downlink channel carries first downlink control information, wherein the first downlink control information is used for indicating the release of semi-persistent scheduling (SPS) resources, or the first downlink control information is used for indicating the dormancy of a secondary cell.
A method as in any one of claims 1-11, wherein the second downlink channel is an SPS PDSCH.
A channel feedback method, comprising:

the terminal equipment receives a first downlink channel, wherein the value of a feedback time sequence corresponding to the first downlink channel is an invalid value;

the terminal equipment receives a target downlink control channel after the first downlink channel, wherein the target downlink control channel is used for indicating a first uplink channel, and feedback information corresponding to the first downlink channel is transmitted through the first uplink channel;

the terminal device does not expect to receive a second downlink channel after the first downlink channel and before the first uplink channel, wherein feedback information corresponding to the second downlink channel is transmitted through a second uplink channel configured by higher layer signaling, and the second uplink channel is before a time unit where the first uplink channel is located, or the second uplink channel is in a time unit where the first uplink channel is located.
The method of claim 13, wherein the method further comprises:

the terminal device gives up receiving the second downlink channel, or,

the terminal device gives up decoding the second downlink channel.
The method of claim 14, wherein the method further comprises:

and the terminal equipment does not send the first uplink channel.
The method of any one of claims 13 to 15, wherein the method further comprises:

and the terminal equipment sends a feedback codebook after the first uplink channel, wherein the feedback codebook comprises feedback information bits corresponding to the second downlink channel, and the bits are set to be negative acknowledgement NACK.
The method of any of claims 13 to 16, wherein the time unit comprises one of:

time slot, sub-slot, at least one time domain symbol.
The method of any of claims 13 to 17, wherein the first downlink channel comprises one of:

physical downlink shared channel PDSCH, physical downlink control channel PDCCH.
The method of claim 18, wherein,

And under the condition that the first downlink channel is a PDCCH, the first downlink channel carries first downlink control information, wherein the first downlink control information is used for indicating the release of semi-persistent scheduling (SPS) resources, or the first downlink control information is used for indicating the dormancy of a secondary cell.
A method as in any of claims 13-19, wherein the second downlink channel is an SPS PDSCH.
A channel feedback method, comprising:

the network equipment sends a first downlink channel, wherein the value of a feedback time sequence corresponding to the first downlink channel is an invalid value;

the network equipment sends a target downlink control channel after the first downlink channel, wherein the target downlink control channel is used for indicating a first uplink channel, and feedback information corresponding to the first downlink channel is transmitted through the first uplink channel;

the network device does not send a second downlink channel after the first downlink channel and before the first uplink channel, wherein feedback information corresponding to the second downlink channel is transmitted through a second uplink channel configured by high-layer signaling, and the second uplink channel is before a time unit where the first uplink channel is located, or the second uplink channel is in a time unit where the first uplink channel is located.
The method of claim 21, wherein the method further comprises:

the network device does not expect to receive the first uplink channel.
The method of claim 21 or 22, wherein the method further comprises:

and the network equipment receives a feedback codebook after the first uplink channel, wherein the feedback codebook comprises feedback information bits corresponding to the second downlink channel, and the bits are set to be negative acknowledgement NACK.
The method of any of claims 21 to 23, wherein the time unit comprises one of:

time slot, sub-slot, at least one time domain symbol.
The method of any of claims 21 to 24, wherein the first downlink channel comprises one of:

physical downlink shared channel PDSCH, physical downlink control channel PDCCH.
The method of claim 25, wherein,

and under the condition that the first downlink channel is a PDCCH, the first downlink channel carries first downlink control information, wherein the first downlink control information is used for indicating the release of semi-persistent scheduling (SPS) resources, or the first downlink control information is used for indicating the dormancy of a secondary cell.
A method as in any of claims 21-26, wherein the second downlink channel is an SPS PDSCH.
A terminal device, comprising: a communication unit and a processing unit;

the communication unit is configured to receive configuration information, where the configuration information is configured to configure the terminal device to receive a second downlink channel after a first downlink channel, where a value of a feedback timing sequence corresponding to the first downlink channel is an invalid value, feedback information corresponding to the second downlink channel is transmitted through a first uplink channel, and a resource of the first uplink channel is configured by a higher layer signaling;

the processing unit is configured to clear feedback information corresponding to the first downlink channel, or the processing unit is configured to not demodulate the second downlink channel, if the target downlink control information is not received before the first time;

the target downlink control information is used for indicating the terminal equipment to send feedback information corresponding to the first downlink channel before a time unit where the first uplink channel is located, or the target downlink control information is used for indicating the terminal equipment to send feedback information corresponding to the first downlink channel in the time unit where the first uplink channel is located.
The terminal device of claim 28, wherein the processing unit does not demodulate the second downlink channel, comprising at least one of:

the processing unit does not receive the second downlink channel;

the processing unit does not decode the second downlink channel.
The terminal device according to claim 28 or 29, wherein the communication unit is further configured to not transmit the first uplink channel.
The terminal device according to any of the claims 28 to 30, wherein the communication unit is further configured to send a first feedback codebook after the first uplink channel, the first feedback codebook comprising feedback information bits corresponding to the first downlink channel, the feedback information bits corresponding to the first downlink channel being set to a negative acknowledgement, NACK.
The terminal device according to any of the claims 28 to 31, wherein the communication unit is further configured to send a second feedback codebook after the first uplink channel, the second feedback codebook comprising feedback information bits corresponding to the second downlink channel, the feedback information bits corresponding to the second downlink channel being set to NACK.
The terminal device according to any of the claims 28 to 32, characterized in that,

the first time is the starting time of the first uplink channel; or alternatively, the first and second heat exchangers may be,

the first time is determined according to a start time and a first time interval of the first uplink channel.
The terminal device of claim 33, wherein the first time interval is determined according to at least one of:

a downlink shared channel processing time threshold, a downlink control channel processing time threshold, an uplink channel preparation time threshold, an uplink channel multiplexing transmission preparation time threshold, and an uplink channel cancellation processing time threshold.
The terminal device according to any of the claims 28 to 34, wherein the processing unit is further configured to determine whether the target downlink control information was received before the first time, based on an end position of a physical downlink control channel, PDCCH, carrying the target downlink control information.
The terminal device according to any of the claims 28 to 35, wherein the time unit comprises one of the following:

time slot, sub-slot, at least one time domain symbol.
The terminal device according to any of the claims 28 to 36, wherein the first downlink channel comprises one of:

physical downlink shared channel PDSCH, PDCCH.
The terminal device of claim 37, wherein,

and under the condition that the first downlink channel is a PDCCH, the first downlink channel carries first downlink control information, wherein the first downlink control information is used for indicating the release of semi-persistent scheduling (SPS) resources, or the first downlink control information is used for indicating the dormancy of a secondary cell.
A terminal device as claimed in any one of claims 28 to 38, wherein the second downlink channel is an SPS PDSCH.
A terminal device, comprising:

the communication unit is used for receiving a first downlink channel, wherein the value of a feedback time sequence corresponding to the first downlink channel is an invalid value;

the communication unit is further configured to receive a target downlink control channel after the first downlink channel, where the target downlink control channel is used to indicate a first uplink channel, and feedback information corresponding to the first downlink channel is transmitted through the first uplink channel;

The communication unit is further configured to not expect to receive a second downlink channel after the first downlink channel and before the first uplink channel, where feedback information corresponding to the second downlink channel is transmitted through a second uplink channel configured by higher layer signaling, and the second uplink channel is before a time unit where the first uplink channel is located, or the second uplink channel is in a time unit where the first uplink channel is located.
The terminal device of claim 40, wherein the terminal device further comprises: the processing unit is used for processing the processed data,

the communication unit is configured to forgo receiving the second downlink channel, or,

the processing unit is configured to forgo decoding the second downlink channel.
The terminal device of claim 41, wherein the communication unit is further configured to not transmit the first uplink channel.
The terminal device according to any of the claims 40 to 42, wherein the communication unit is further configured to send a feedback codebook after the first uplink channel, the feedback codebook comprising feedback information bits corresponding to the second downlink channel, the bits being set to a negative acknowledgement, NACK.
The terminal device according to any of the claims 40 to 43, wherein the time unit comprises one of the following:

time slot, sub-slot, at least one time domain symbol.
The terminal device of any of claims 40 to 44, wherein the first downlink channel comprises one of:

physical downlink shared channel PDSCH, physical downlink control channel PDCCH.
The terminal device of claim 45, wherein,

and under the condition that the first downlink channel is a PDCCH, the first downlink channel carries first downlink control information, wherein the first downlink control information is used for indicating the release of semi-persistent scheduling (SPS) resources, or the first downlink control information is used for indicating the dormancy of a secondary cell.
A terminal device as in any of claims 40-46, wherein the second downlink channel is an SPS PDSCH.
A network device, comprising:

the communication unit is used for sending a first downlink channel, wherein the value of a feedback time sequence corresponding to the first downlink channel is an invalid value;

the communication unit is further configured to send a target downlink control channel after the first downlink channel, where the target downlink control channel is used to indicate a first uplink channel, and feedback information corresponding to the first downlink channel is transmitted through the first uplink channel;

The communication unit is further configured to not send a second downlink channel after the first downlink channel and before the first uplink channel, where feedback information corresponding to the second downlink channel is transmitted through a second uplink channel configured by higher layer signaling, and the second uplink channel is before a time unit where the first uplink channel is located, or the second uplink channel is in a time unit where the first uplink channel is located.
The network device of claim 48, wherein the communication unit is further configured to not expect to receive the first uplink channel.
The network device of claim 48 or 49, wherein the communication unit is further configured to receive a feedback codebook after the first uplink channel, the feedback codebook including feedback information bits corresponding to the second downlink channel, the bits set to a negative acknowledgement, NACK.
The network device of any one of claims 48 to 50, wherein the time unit comprises one of:

time slot, sub-slot, at least one time domain symbol.
The network device of any one of claims 48 to 51, wherein the first downlink channel comprises one of:

Physical downlink shared channel PDSCH, physical downlink control channel PDCCH.
The network device of claim 52,

and under the condition that the first downlink channel is a PDCCH, the first downlink channel carries first downlink control information, wherein the first downlink control information is used for indicating the release of semi-persistent scheduling (SPS) resources, or the first downlink control information is used for indicating the dormancy of a secondary cell.
A network device as recited in any of claims 48-53, wherein said second downlink channel is an SPS PDSCH.
A terminal device, comprising: a processor and a memory for storing a computer program, the processor being adapted to invoke and run the computer program stored in the memory, to perform the method according to any of claims 1 to 12.
A terminal device, comprising: a processor and a memory for storing a computer program, the processor being for invoking and running the computer program stored in the memory, performing the method of any of claims 13 to 20.
A network device, comprising: a processor and a memory for storing a computer program, the processor being for invoking and running the computer program stored in the memory, performing the method of any of claims 21 to 27.
A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 1 to 12.
A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any of claims 13 to 20.
A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any of claims 21 to 27.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 12.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 13 to 20.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 21 to 27.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 12.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 13 to 20.
A computer program product comprising computer program instructions which cause a computer to perform the method of any of claims 21 to 27.
A computer program, characterized in that the computer program causes a computer to perform the method according to any one of claims 1 to 12.
A computer program, characterized in that the computer program causes a computer to perform the method of any of claims 13 to 20.
A computer program, characterized in that the computer program causes a computer to perform the method of any of claims 21 to 27.