WO2021253419A1 - Method for determining feedback mode, communication apparatus and storage medium - Google Patents

Abstract

Provided in embodiments of the present application are a method for determining a feedback mode, a communication device and a storage medium. The method comprises: determining the feedback mode of a terminal device with respect to a scenario of data reception; sending first indication information to the terminal device; the first indication information is used to indicate the feedback mode, and the terminal device determines the feedback mode of the terminal device with respect to the scenario of data reception according to the first indication information. The method for determining the feedback mode, the communication apparatus and the storage medium provided by the embodiments of the present application may dynamically adjust the feedback mode of the terminal device with respect to the scenario of data reception, and improve the flexibility of the terminal device in feeding back the scenario of data reception.

Description

Method for determining feedback mode, communication device and storage medium Technical field

The embodiments of the present application relate to the field of communication technologies, and in particular, to a method for determining a feedback mode, a communication device, and a storage medium.

Background technique

In the fifth-generation mobile communication system (5th-generation, 5G) communication, large-scale antenna arrays are widely used. Large-scale antenna arrays can form one or more beams to increase the coverage of wireless signals and reduce mutual interference of wireless networks. When a large-scale antenna array is applied to a network device, the network device can form one or more downlink beams to connect to the terminal device. When a large-scale antenna array is applied to a terminal device, such a large-scale antenna array can form a filter with a spatial filtering function, so that the terminal device can simultaneously receive data sent by the network device through multiple downlink beams.

For example, a network device can send data to a terminal device through multiple transmitting and receiving point (TRP) beams, and a terminal device can receive data from multiple TRP beams through multiple antennas or large-scale antenna arrays, enhancing the terminal The selectivity of data transmission between equipment and network equipment.

An important feature of the physical downlink sharing channel (PDSCH) is to support hybrid automatic repeat request (HARQ). After receiving the data sent by the network device through the PDSCH, the terminal device can respond to the data The demodulation situation of the network device is fed back to the network device to confirm/non-acknowledgement (acknowledgement/non-acknowledgement, ACK/NACK) to inform the network device whether the data received is correct.

At present, when a network device sends data to a terminal device, how the terminal device determines the feedback mode for the data reception situation is a problem to be solved urgently.

The foregoing description is to provide general background information and does not necessarily constitute prior art.

Summary of the invention

The embodiments of the present application provide a method, a communication device, and a storage medium for determining a feedback mode. When a network device sends data to a terminal device, the terminal device can determine a feedback mode for data reception.

In the first aspect, an embodiment of the present application provides a method for determining a feedback mode. The method can be applied to a network device or a chip in the network device. The method includes: determining a feedback mode of a terminal device for a data receiving situation; and sending first indication information to the terminal device, where the first indication information is used to indicate the feedback mode.

With the method provided in the first aspect, in a scenario where a network device sends data to a terminal device, after the network device determines the feedback mode of the terminal device for the data reception situation, it can indicate the determined feedback mode to the terminal through the first indication information equipment. The method can dynamically adjust the feedback mode of the terminal device with respect to the data receiving situation, and improve the flexibility of the terminal device to feed back the data receiving situation.

Optionally, the feedback manner includes: joint feedback, and/or separate feedback, where the joint feedback is a method in which the terminal device feeds back the data received on the downlink beam on the first uplink beam. Reception status, the separated feedback is the reception status of the data received on the downlink beam by the terminal device through the uplink beam feedback corresponding to the downlink beam.

In this optional manner, when joint feedback is adopted, an uplink beam for feeding back the data reception situation can be selected according to the actual situation, which improves the flexibility of the feedback reception situation. When the separate feedback is used, the data reception status can be sent in real time, and the transmission efficiency can be improved.

Optionally, the feedback manner is related to the transmission parameter of the data, and/or is related to the channel quality of the uplink beam of the terminal device.

For example, the transmission parameter is the transmission mode of the data; if the transmission mode of the data is a discontinuous transmission mode, the feedback mode is joint feedback; and/or, if the transmission mode of the data is continuous Transmission mode, the feedback mode is separated feedback.

Through this optional method, the feedback mode of the terminal device for the data reception situation can be dynamically adjusted according to the data transmission parameters, which improves the flexibility of the terminal device to feedback the data reception situation.

For another example, it includes at least one of the following: if the channel quality of at least one uplink beam in the uplink beam is greater than or equal to the second channel quality threshold, the feedback mode is joint feedback; if the channel quality of the uplink beams is equal Greater than or equal to the first channel quality threshold and less than the second channel quality threshold, the feedback mode is separate feedback; if the channel quality of at least one uplink beam in the uplink beam is less than the first channel quality threshold, the The feedback mode is joint feedback; the second channel quality threshold is greater than the first channel quality threshold.

Through this optional manner, the feedback mode of the terminal device for the data reception situation can be dynamically adjusted according to the channel quality of the uplink beam, which improves the flexibility of the terminal device to feedback the data reception situation.

Optionally, if the feedback manner is the joint feedback, in a possible implementation manner, the first indication information is also used to indicate the first uplink beam. In another possible implementation manner, the network device sends second indication information to the terminal device; the second indication information is used to indicate the first uplink beam.

Through this optional manner, when the feedback manner is joint feedback, a flexible manner can be used to indicate the uplink beam that feeds back the reception status of the data received on the downlink beam.

Optionally, the first uplink beam is an uplink beam with the best channel quality among the uplink beams.

In the second aspect, an embodiment of the present application provides a method for determining a feedback mode. The method can be applied to a terminal device or a chip in the terminal device. The method includes: receiving first indication information; and determining, according to the first indication information, a feedback mode of the terminal device for a data reception situation, where the first indication information is used to indicate a feedback mode of the terminal device for a data reception situation.

Optionally, the feedback manner includes: joint feedback, and/or separate feedback, where the joint feedback is a method in which the terminal device feeds back the data received on the downlink beam on the first uplink beam. Reception status, the separated feedback is the reception status of the data received on the downlink beam by the terminal device through the uplink beam feedback corresponding to the downlink beam.

Optionally, the feedback manner is related to the transmission parameter of the data, and/or is related to the channel quality of the uplink beam of the terminal device.

For example, the transmission parameter is the transmission mode of the data; if the transmission mode of the data is a discontinuous transmission mode, the feedback mode is joint feedback; and/or, if the transmission mode of the data is continuous Transmission mode, the feedback mode is separated feedback.

For another example, it includes at least one of the following: if the channel quality of at least one uplink beam in the uplink beam is greater than or equal to the second channel quality threshold, the feedback mode is joint feedback; if the channel quality of the uplink beams is equal Greater than or equal to the first channel quality threshold and less than the second channel quality threshold, the feedback mode is separate feedback; if the channel quality of at least one uplink beam in the uplink beam is less than the first channel quality threshold, the The feedback mode is joint feedback; the second channel quality threshold is greater than the first channel quality threshold.

Optionally, if the feedback manner is the joint feedback, in a possible implementation manner, the first indication information is also used to indicate the first uplink beam. In another possible implementation manner, the terminal device receives the second indication information; the second indication information is used to indicate the first uplink beam.

Optionally, the first uplink beam is an uplink beam with the best channel quality among the uplink beams.

Optionally, the method further includes: receiving data, and feeding back the receiving situation of the data according to the feedback manner indicated by the first indication information; the data is sent by the network device using at least one downlink beam.

Through this optional method, the terminal device can select the uplink beam that feeds back the data reception situation according to the actual situation when the joint feedback is used according to the instructions of the network device, which improves the flexibility of the feedback reception situation; when using separate feedback When the data is received, the data can be sent in real time, and the transmission efficiency can be improved.

Optionally, the step of feeding back the data reception condition according to the feedback mode indicated by the first indication information includes:

According to the feedback mode indicated by the first indication information, a codebook of the data received from each downlink beam is generated; the codebook is used to indicate the reception status of the data received on the downlink beam, and the code The uplink beam corresponding to the codebook is indexed; and the codebook is sent on the uplink beam corresponding to each codebook according to the index.

Optionally, the codebook is a static codebook or a dynamic codebook.

With this optional method, the terminal device can send the data reception status to the network device in a codebook mode according to the feedback mode indicated by the first indication information and through the uplink beam corresponding to each codebook according to the index, so as to improve efficiency.

The beneficial effects of the method for determining the feedback manner provided by each possible manner of the above second aspect can be referred to the beneficial effects brought about by each possible manner of the above first aspect, which will not be repeated here.

In the third aspect, an embodiment of the present application provides a method for determining a feedback mode. The method may be applied to a terminal device or a chip in the terminal device. The method includes: receiving data, the data being sent by a network device using at least one downlink beam; generating a codebook of the data; the codebook is used to indicate the reception status of the data received on the downlink beam, so The codebook is indexed with the uplink beam corresponding to the codebook; and the codebook is sent on the uplink beam corresponding to each codebook according to the index.

Optionally, the codebook is a static codebook or a dynamic codebook.

With this method, the data reception situation can be sent to the network device in the form of a codebook through the uplink beam corresponding to each codebook according to the index, so as to improve efficiency.

In a fourth aspect, an embodiment of the present application provides a communication device, and the device includes:

The processing module is used to determine the feedback mode of the terminal device for the data reception situation.

The sending module is configured to send first indication information to the terminal device, where the first indication information is used to indicate the feedback mode.

Optionally, the feedback manner includes: joint feedback, and/or separate feedback, where the joint feedback is a method in which the terminal device feeds back the data received on the downlink beam on the first uplink beam. Reception status, the separated feedback is the reception status of the data received on the downlink beam by the terminal device through the uplink beam feedback corresponding to the downlink beam.

Optionally, the feedback manner is related to the transmission parameter of the data, and/or is related to the channel quality of the uplink beam of the terminal device.

For example, the transmission parameter is the transmission mode of the data; if the transmission mode of the data is a discontinuous transmission mode, the feedback mode is joint feedback; and/or, if the transmission mode of the data is continuous Transmission mode, the feedback mode is separated feedback.

For another example, it includes at least one of the following: if the channel quality of at least one uplink beam in the uplink beam is greater than or equal to the second channel quality threshold, the feedback mode is joint feedback; if the channel quality of the uplink beams is equal Greater than or equal to the first channel quality threshold and less than the second channel quality threshold, the feedback mode is separate feedback; if the channel quality of at least one uplink beam in the uplink beam is less than the first channel quality threshold, the The feedback mode is joint feedback; the second channel quality threshold is greater than the first channel quality threshold.

Optionally, if the feedback manner is the joint feedback, in a possible implementation manner, the first indication information is also used to indicate the first uplink wave. In another possible implementation manner, the sending module is also used to send second indication information to the terminal device; the second indication information is used to indicate the first uplink beam.

Optionally, the first uplink beam is an uplink beam with the best channel quality among the uplink beams.

For the beneficial effects of the communication device provided by the possible manners of the foregoing fourth aspect, reference may be made to the beneficial effects of the foregoing first aspect of the possible manners, which will not be repeated here.

In a fifth aspect, an embodiment of the present application also provides a communication device, the device including:

A receiving module, configured to receive first indication information; the first indication information is used to indicate the feedback mode;

The processing module is configured to determine, according to the first indication information, the feedback mode of the terminal device for the data reception situation.

Optionally, the feedback manner includes: joint feedback, and/or separate feedback, where the joint feedback is a method in which the terminal device feeds back the data received on the downlink beam on the first uplink beam. Reception status, the separated feedback is the reception status of the data received on the downlink beam by the terminal device through the uplink beam feedback corresponding to the downlink beam.

Optionally, the feedback manner is related to the transmission parameter of the data, and/or is related to the channel quality of the uplink beam of the terminal device.

For example, the transmission parameter is the transmission mode of the data; if the transmission mode of the data is a discontinuous transmission mode, the feedback mode is joint feedback; and/or, if the transmission mode of the data is continuous Transmission mode, the feedback mode is separated feedback.

Another example includes at least one of the following: if the channel quality of at least one uplink beam in the uplink beam is greater than or equal to the second channel quality threshold, the feedback mode is joint feedback; if the channel quality of the uplink beam is equal Greater than or equal to the first channel quality threshold and less than the second channel quality threshold, the feedback mode is separate feedback; if the channel quality of at least one uplink beam in the uplink beam is less than the first channel quality threshold, the The feedback mode is joint feedback; the second channel quality threshold is greater than the first channel quality threshold.

Optionally, if the feedback manner is the joint feedback, in a possible implementation manner, the first indication information is also used to indicate the first uplink beam. In another possible implementation manner, the receiving module is further configured to receive second indication information sent by a network device; the second indication information is used to indicate the first uplink beam.

Optionally, the first uplink beam is an uplink beam with the best channel quality among the uplink beams.

Optionally, the device further includes: a sending module;

The receiving module is further configured to receive data, and the data is sent by the network device using at least one downlink beam;

The sending module is configured to feed back the data reception condition according to the feedback mode indicated by the first indication information.

Optionally, the sending module is specifically configured to generate a codebook of data received from each downlink beam according to the feedback mode indicated by the first indication information; the codebook is used to indicate the The codebook is indexed with the uplink beam corresponding to the codebook; according to the index, the codebook is sent on the uplink beam corresponding to each codebook.

Optionally, the codebook is a static codebook or a dynamic codebook.

For the beneficial effects of the communication device provided by the possible manners of the above-mentioned fifth aspect, reference may be made to the beneficial effects brought by each of the possible manners of the above-mentioned second aspect, which will not be repeated here.

In a sixth aspect, an embodiment of the present application provides a communication device, which includes:

A receiving module for data, the data being sent by a network device using at least one downlink beam;

A processing module, configured to generate a codebook of the data; the codebook is used to indicate the reception status of the data received on the downlink beam, and the codebook is indexed with the uplink beam corresponding to the codebook;

The sending module is configured to send the codebook on the uplink beam corresponding to each codebook according to the index.

Optionally, the codebook is a static codebook or a dynamic codebook.

For the beneficial effects of the communication device provided by the possible manners of the foregoing sixth aspect, reference may be made to the beneficial effects of the foregoing third aspect of the possible manners, which will not be repeated here.

In a seventh aspect, an embodiment of the present application provides a communication device, including: at least one processor and a memory;

The memory stores computer execution instructions;

The at least one processor executes the computer-executable instructions stored in the memory, so that the apparatus executes the method described in the first aspect or each possible manner of the first aspect.

In an eighth aspect, an embodiment of the present application provides a communication device, including: at least one processor and a memory;

The memory stores computer execution instructions;

The at least one processor executes the computer-executable instructions stored in the memory, so that the apparatus executes the method described in the second aspect or in each possible manner of the second aspect.

In a ninth aspect, an embodiment of the present application provides a communication device, including: at least one processor and a memory;

The memory stores computer execution instructions;

The at least one processor executes the computer-executable instructions stored in the memory, so that the apparatus executes the method described in the third aspect or each possible manner of the third aspect.

In a tenth aspect, an embodiment of the present application provides a computer-readable storage medium with computer-executable instructions stored on the computer-readable storage medium. When the computer-executable instructions are executed by a processor, the first aspect or the first aspect is implemented. Aspects of the methods described in each possible way.

In an eleventh aspect, an embodiment of the present application provides a computer-readable storage medium having computer-executable instructions stored on the computer-readable storage medium. When the computer-executable instructions are executed by a processor, the second aspect or the first aspect is implemented. The methods described in the two possible ways.

In a twelfth aspect, an embodiment of the present application provides a computer-readable storage medium having computer-executable instructions stored on the computer-readable storage medium. When the computer-executable instructions are executed by a processor, the third aspect or the first aspect is implemented. The methods described in each of the three possible ways.

In a thirteenth aspect, an embodiment of the present application provides a chip with a computer program stored on the chip, and when the computer program is executed by a processor, it executes as described in the first aspect or each possible manner of the first aspect. The method described.

In a fourteenth aspect, an embodiment of the present application provides a chip with a computer program stored on the chip, and when the computer program is executed by a processor, it executes as described in the second aspect or each possible manner of the second aspect. The method described.

In a fifteenth aspect, an embodiment of the present application provides a chip with a computer program stored on the chip, and when the computer program is executed by a processor, it executes as described in the foregoing third aspect or each possible manner of the third aspect. The method described.

In a sixteenth aspect, the embodiments of the present application provide a computer program product containing instructions that, when run on a computer, enable the computer to execute the above-mentioned first aspect or the methods in the first aspect in various possible ways.

In a seventeenth aspect, the embodiments of the present application provide a computer program product containing instructions, which when run on a computer, cause the computer to execute the above-mentioned second aspect or the methods in the second aspect in various possible ways.

In an eighteenth aspect, the embodiments of the present application provide a computer program product containing instructions, which when run on a computer, enable the computer to execute the foregoing third aspect or the methods in the third aspect in various possible ways.

The method for determining the feedback mode, the communication device, and the storage medium provided by the embodiments of the present application. In the scenario where the network device sends data to the terminal device, the network device may pass the first instruction after determining the feedback mode of the terminal device for the data reception situation The information indicates the determined feedback mode to the terminal device. The method can dynamically adjust the feedback mode of the terminal device with respect to the data receiving situation, and improve the flexibility of the terminal device to feed back the data receiving situation.

Description of the drawings

In order to more clearly explain the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description These are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor.

FIG. 1 is a schematic diagram of the architecture of a communication system applied in an embodiment of the present application;

FIG. 2 is a schematic diagram of the architecture of another communication system applied in an embodiment of the present application;

FIG. 3 is a schematic flowchart of a method for determining a feedback mode provided by an embodiment of the present application;

FIG. 4 is a schematic flowchart of another method for determining a feedback manner provided by an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

Fig. 6 is a schematic structural diagram of another communication device provided by an embodiment of the present application;

FIG. 7 is a schematic structural diagram of another communication device provided by an embodiment of this application;

FIG. 8 is a schematic structural diagram of still another communication device provided by an embodiment of this application.

detailed description

In order to make the purpose, technical solutions and advantages of the embodiments of this application clearer, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the drawings in the embodiments of this application. Obviously, the described embodiments These are a part of the embodiments of this application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by a person of ordinary skill in the art without creative work shall fall within the protection scope of this application.

The embodiments of this application can be applied to a fifth generation (5G) mobile communication system or a new radio (NR) system, a future communication system (for example, a sixth generation mobile communication system), and so on. The 5G mentioned in the embodiment of the application may be a 5G mobile communication system including a non-standalone (NSA) and/or a standalone (SA) 5G mobile communication system. The communication system applied in the embodiments of this application may also be a public land mobile network (PLMN) network, a device-to-device (D2D) network, and a machine-to-machine (M2M) network. ) Network, Internet of Things (IoT) network or other network.

In order to better understand the technical solutions of this application, first, the terms and application scenarios involved in this application will be introduced in detail.

Transmitting and receiving point (TRP): TRP is used to receive and transmit wireless signals. TRP can be, for example, a base transceiver station (BTS), an evolved NodeB (eNB or eNodeB), and a wireless controller. Centralized unit (CU) nodes, distributed unit (DU) nodes, or RAN equipment including CU nodes and DU nodes, etc.

Antenna panel (panel): A device used to transmit and receive wireless signals.

Hybrid automatic repeat request (HARQ): A technology that combines forward error correction demodulation (FEC) and automatic repeat request (ARQ). Redundant information can be added to the transmitted data through FEC. In this way, after receiving the data, the receiving end can use an error detection code, such as a cyclic redundancy check (cyclic redundancy check, CRC), to detect whether the received data is in error. At the same time, during the detection process, the receiving end can correct some errors through redundant information in the data to reduce the number of data retransmissions. If the receiving end detects that the data is correct (that is, the CRC check is successful), the receiving end can send an affirmative acknowledgment (ACK) to the sending end to notify that the data has been received correctly. If the receiving end detects a data error (that is, a CRC check failure), that is, an error that cannot be corrected by FEC, the receiving end can request the sending end to resend the data through the ARQ mechanism. Specifically, the receiving end may send a negative acknowledgment (NACK) to the sending end to notify the failure of the data reception. After receiving the NACK of the data, the sender will retransmit the data. Among them, the aforementioned ACK and NACK can be collectively referred to as HARQ-ACK information.

Downlink data channel: a physical channel that carries downlink data. For example, physical downlink sharing channel (physical downlink sharing channel, PDSCH).

HARQ-ACK codebook (HARQ-ACK codebook): When it is necessary to feed back the data reception situation, the feedback HARQ-ACK information constitutes the HARQ-ACK codebook. At present, HARQ-ACK codebooks are divided into two types, namely semi-static HARQ-ACK codebook (semi-static HARQ-ACK codebook) and dynamic HARQ-ACK codebook (dynamic HARQ-ACK codebook).

FIG. 1 is a schematic diagram of the architecture of a communication system applied in an embodiment of the present application. As shown in FIG. 1, the communication system may include: a network device 11 and a terminal device 12. Wherein, the network device 11 may be communicatively connected with the terminal device 11 through multiple beams. For example, the network device 11 may communicate with the terminal device 11 through multiple beams formed by multiple panels. In downlink transmission, the network device can send data to the terminal device through multiple downlink beams. In the uplink transmission, the terminal device can also send data to the network device through multiple uplink beams. The terminal device can be a fixed location, or it can be movable. For example, in some cases, the uplink beam and the downlink beam may form a beam pair so that data is transmitted in the beam pair.

Fig. 2 is a schematic structural diagram of another communication system applied in an embodiment of the present application. As shown in Figure 2, in the communication system, the network device 11 may include multiple TRPs (Figure 2 is a schematic diagram of two TRPs (111a and 111b) as an example), each TRP can form multiple beams, and the terminal device 11 It is possible to connect to the network device 11 through multiple beams formed by multiple TRPs. For example, each TRP may include at least one panel, and each panel may form at least one beam.

The terminal equipment in the embodiments of this application may refer to user equipment, access terminals, user units, user stations, mobile stations, mobile stations, remote stations, remote terminals, mobile equipment, user terminals, terminals, wireless communication equipment, user agents, or User device. The terminal device can also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), with wireless communication Functional handheld devices, computing devices, or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in the future 5G network, or future evolution of the public land mobile network (PLMN) Terminal equipment, etc., which are not limited in the embodiment of the present application.

As an example and not a limitation, in the embodiment of the present application, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices. It is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. Wearable devices are not only a hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, complete or partial functions that can be implemented without relying on smartphones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets and smart jewelry for physical sign monitoring.

In addition, in the embodiments of this application, the terminal device can also be a terminal device in an IoT network. IoT is an important part of the development of information technology in the future. Its main technical feature is to connect objects to the network through communication technology to realize man-machine Interconnection, an intelligent network of interconnection of things. In the embodiment of the present application, the IOT technology can achieve massive connections, deep coverage, and power saving of the terminal through, for example, narrowband NB technology.

In addition, in the embodiments of this application, the terminal equipment may also include sensors such as smart printers, train detectors, gas stations, etc. The main functions include collecting data (part of the terminal equipment), receiving control information and downlink data from network equipment, and sending electromagnetic waves. , To transmit uplink data to network equipment.

The network device in the embodiment of the present application may be a device used to communicate with a terminal device, and is an access device that the terminal device accesses to the mobile communication system in a wireless manner. The network equipment can be the base transceiver station (BTS) in the global system for mobile communications (GSM) system or code division multiple access (CDMA), or it can be broadband code division multiple access. The base station (NodeB, NB) in the (wideband code division multiple access, WCDMA) system can also be an evolved NodeB (eNB or eNodeB) in the LTE system, or it can be a cloud radio access network (cloud radio access) network, CRAN) scenario wireless controller, or the network equipment can be relay station, access point, vehicle equipment, wearable equipment, network equipment in the future 5G network or network equipment in the future evolved PLMN network, etc. The application examples are not limited. In a network structure, a network device may include a centralized unit (CU) node, or a distributed unit (DU) node, or a RAN device including a CU node and a DU node.

In the embodiment of the present application, the terminal device or the network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also referred to as main memory). The operating system may be any one or more computer operating systems that implement business processing through processes, for example, Linux operating systems, Unix operating systems, Android operating systems, iOS operating systems, or windows operating systems. The application layer includes applications such as browsers, address books, word processing software, and instant messaging software. Moreover, the embodiments of the application do not specifically limit the specific structure of the execution body of the method provided in the embodiments of the application, as long as the program that records the code of the method provided in the embodiments of the application can be provided according to the embodiments of the application. For example, the execution subject of the method provided in the embodiment of the present application may be a terminal device or a network device, or a functional module in the terminal device or network device that can call and execute the program.

In the embodiments of the present application, the network equipment and terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; they can also be deployed on the water; they can also be deployed on aircraft, balloons, and satellites in the air. The embodiments of the present application do not limit the application scenarios of network equipment and terminal equipment.

Network equipment and terminal equipment can communicate through licensed spectrum (licensed spectrum), communicate through unlicensed spectrum (unlicensed spectrum), or communicate through licensed spectrum and unlicensed spectrum at the same time. The network device and the terminal device can communicate through a frequency spectrum below 6 gigahertz (gigahertz, GHz), communicate through a frequency spectrum above 6 GHz, and communicate using a frequency spectrum below 6 GHz and a frequency spectrum above 6 GHz at the same time. The embodiment of the present application does not limit the spectrum resource used between the network device and the terminal device.

When the transmission direction of the communication system is uplink transmission, the terminal device 12 is the sending end and the network device 11 is the receiving end. When the transmission direction of the communication system is downlink transmission, the network device 11 is the sending end and the terminal device 12 is the receiving end.

It should be understood that the network device 11 in FIG. 1 or FIG. 2 may include one or more cells.

It should be understood that the technical solutions of the embodiments of the present application can be applied to single carrier or carrier aggregation (CA) scenarios, or dual connectivity (DC) scenarios, or coordinated multipoint transmission/reception. , CoMP) scene. The CoMP can be one or more scenarios of non-coherent joint transmission (NCJT), coherent joint transmission (CJT), and joint transmission (JT).

Exemplarily, the communication system shown in FIG. 1 or FIG. 2 may be in a single carrier scenario or a carrier aggregation (CA) scenario, for example.

It should be understood that the communication system shown in FIG. 1 or FIG. 2 is only an example, and the communication system to which the embodiment of the present application is applicable is not limited thereto. For example, the communication system may also include other network devices, such as wireless relay devices and wireless backhaul devices, etc., which are not shown in FIGS. 1 and 2. The embodiments of the present application do not limit the number of network devices and terminal devices included in the communication system.

In downlink transmission, downlink data is usually carried by PDSCH, and HARQ is used to ensure the reliability and transmission efficiency of physical layer data transmission. The network device sends data to the terminal device. After the terminal device receives the data, it tries to demodulate the received data. If the demodulation is successful, it will feed back a 1-bit ACK through the physical uplink control channel (PUCCH) To the network device to indicate the success of the data reception; if the demodulation fails, a 1-bit NACK is fed back to the network device through the PUCCH to indicate that the data reception fails, and the network device needs to retransmit the data at this time.

In the schematic diagram shown in FIG. 1 or FIG. 2, when the network device 11 sends data to the terminal device 12, how the terminal device 12 determines the feedback mode for the data reception situation is an urgent problem to be solved.

Considering the above problems, the method, communication device, and storage medium for determining the feedback mode provided by the embodiments of the present application can flexibly instruct the terminal device to receive data in a scenario where the network device can transmit data to the terminal device. Feedback method.

The technical solution of the method for determining the feedback mode provided by the present application will be described in detail below in conjunction with several specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

FIG. 3 is a schematic flowchart of a method for determining a feedback mode provided by an embodiment of the present application. As shown in Figure 3, the method may include:

S101. The network device determines the feedback mode of the terminal device with respect to the data reception situation.

Optionally, in a possible implementation manner, the feedback manner includes joint feedback, or separate feedback, or joint feedback and separate feedback.

The first way: joint feedback.

The joint feedback is that the terminal device feeds back the reception situation of the data received on the downlink beam on the first uplink beam. Exemplarily, the joint feedback may be that the terminal device feeds back on the first uplink beam the reception status of the data received on the at least two downlink beams.

Among them, the reception conditions of the data received on at least two downlink beams can be fed back as a whole or separately. For example, the data reception situation can be fed back through the HARQ-ACK codebook, for example. When the HARQ-ACK codebook is used for feedback, the reception of data received on each downlink beam can be fed back to the first uplink beam through a HARQ-ACK codebook, or part of the data received on the downlink beam can be fed back. The reception situation is fed back in the first uplink beam through a HARQ-ACK codebook, and the reception situation of the data received on each downlink beam can also be fed back in the first uplink beam through respective independent HARQ-ACK codebooks. Wherein, the first uplink beam may form a beam pair with one of the at least two downlink beams.

In the joint feedback, the terminal device can feed back the reception of data received from the downlink beam on an uplink beam. Because this method can select the uplink beam that feeds back the data reception according to the actual situation, the flexibility of the feedback reception is improved. When the reception status of the data received on the downlink beam is fed back as a whole, the number of times of feedback of the data reception status can be reduced, thereby reducing the overhead of the sending data reception status and saving network resources.

The second way: separate feedback.

Separate feedback means that the terminal device feeds back the reception status of the data received on the downlink beam through the uplink beam corresponding to each downlink beam.

In the separated feedback, the terminal device can independently feed back the reception of the data received on the downlink beam through the uplink beam corresponding to each downlink beam. This method can send the data reception in real time and improve the transmission efficiency. Among them, the data reception situation can be fed back through the HARQ-ACK codebook, for example.

S102. The network device sends first indication information to the terminal device.

Correspondingly, the terminal device receives the first indication information.

Wherein, the first indication information is used to indicate the feedback mode of the data reception situation. For example, the first indication information may be a bit. When the bit has a value of 1, it is used to indicate joint feedback, and when the bit has a value of 0, it is used to indicate separate feedback. Or, when the value of this bit is 0, it is used to indicate joint feedback, and when the value of this bit is 1, it is used to indicate separate feedback.

In a possible implementation manner, the network device may carry the first indication information in downlink control information (Downlink Control Information, DCI), and send it to the terminal device through a downlink physical control channel (Physical Downlink Control Channel, PDCCH). At this time, the first indication information may be a newly added field in the DCI, or an existing field in the multiplexed DCI.

In another possible implementation manner, the network device may also carry the first indication information in high-layer signaling, and the network device sends the first indication information to the terminal device through the high-layer signaling. It should be understood that the high-level signaling mentioned here may be, for example, radio resource control (Radio Resource Control, RRC) signaling, media access control (Media Access Control, MAC) signaling, and the like.

S103. The terminal device determines, according to the first indication information, a feedback mode of the terminal device for the data reception situation.

After the terminal device determines the feedback mode for the data reception situation, upon receiving the data, it can feed back the data reception situation according to the feedback mode.

Optionally, the terminal device may also save the first indication information. For example, the terminal device may save the first indication information, and delete it when the preset storage period is reached. Alternatively, the terminal device may delete the previously saved first instruction information when receiving the new first instruction information. Alternatively, the terminal device may delete it after performing a corresponding operation (for example, feedback of data reception) based on the first instruction information.

Optionally, in some possible implementation manners, when the feedback manner of the data reception situation is joint feedback, the first indication information is also used to indicate the first uplink beam.

For example, when the first indication information uses one bit to indicate joint feedback or separate feedback, at least one bit may also be used to indicate the first uplink beam, and the number of bits used to indicate the first uplink beam depends on the network equipment and The number of beams between terminal devices. For example, when the network device and the terminal device are connected by two pairs of beams, the bit indicating the first uplink beam can be 1 bit. When the network device and the terminal device are connected by three or four pairs of beams , The bit indicating the first uplink beam can be 2 bits. For another example, one or more bits may also be used to indicate the feedback mode of the data reception situation, and the first uplink beam indicated when the data reception situation is the joint feedback. Taking the architecture shown in Figure 2 as an example, 10 can be used to indicate that joint feedback is used and the first uplink beam is the uplink beam connected to TRP 111a, and 11 can be used to indicate that joint feedback is used and the first uplink beam is the same as TRP111b. The connected uplink beam, 01 can be used to indicate the use of separate feedback.

Optionally, in some possible implementation manners, when the terminal device's feedback mode for the data reception situation is joint feedback, the network device may also send second indication information to the terminal device; the second indication information is used to indicate the first Uplink beam.

In a possible implementation manner, the network device may carry the first indication information and the second indication information in the DCI, and send them to the terminal device through the PDCCH. For example, the first indication information and the second indication information may be carried in one DCI. In this case, the first indication information and the second indication information may be a newly added field in the DCI, or an existing field in the multiplexed DCI . For another example, the first indication information and the second indication information may also be carried in different DCIs.

In another possible implementation manner, the network equipment may also carry the first indication information and the second indication information in the high-level signaling, and the network equipment sends the high-level signaling containing the first indication information to the terminal equipment through the high-level signaling. . For example, the first indication information and the second indication information may be carried in one high-layer signaling, and for example, the first indication information and the second indication information may also be carried in different high-layer signaling.

Optionally, in some possible implementation manners, the first uplink beam may be an uplink beam that meets a preset condition, for example, an uplink beam with the smallest beam sequence number, or an uplink beam with the best channel quality. The channel quality mentioned here is, for example, characterized by at least one of the following parameters: it can be received signal strength indication (RSSI), signal to interference plus noise ratio (SINR), channel quality Indication (channel quality indication, CQI), etc.

In the method of this embodiment, in a scenario where the network device communicates with the terminal device through multiple beams, the network device sends the first indication information to the terminal device after determining the feedback mode of the terminal device for the data reception situation to indicate The terminal equipment uses the indicated feedback mode to feedback the data reception status. The method can dynamically adjust the feedback mode of the data receiving situation based on the actual situation, and improve the flexibility of the feedback data receiving situation.

On the basis of the foregoing embodiment, the following embodiment will focus on how the network device determines the feedback mode of the data reception situation.

The first method: In some possible implementations, the feedback method of the data reception situation is related to the data transmission parameters. The transmission parameter may include, for example, at least one of the data transmission mode, the throughput index of the service, and the delay index of the service.

Method 1: For example, when the transmission parameter is the data transmission method, if the data transmission method is the discontinuous transmission method, the feedback method of the data reception situation is the joint feedback; or, if the data transmission method is the continuous transmission method, Then the feedback mode of data reception is separate feedback; or, the data transmission mode includes continuous transmission and discontinuous transmission. For discontinuous transmission data, the feedback mode of data reception is joint feedback. For continuous transmission The way of data, the feedback way of data reception is separate feedback. Among them, continuous transmission may be that the service corresponding to the data requires continuous transmission, such as a video conference service. Discontinuous transmission may be that the service corresponding to the data does not require continuous transmission, such as web access service.

Exemplarily, in the application scenario shown in Figure 2, the network device 11 is connected to the terminal device 12 through the beam formed by TRP 111a and the beam formed by TRP 111b. When the network device 11 passes the PDSCH of TRP 111a and the PDSCH of TRP 111b is In the discontinuous transmission mode, joint feedback can be used to save network resources. When the network device 11 uses the PDSCH through the TRP 111a and the PDSCH through the TRP 111b in a continuous transmission mode, separate feedback may be used to improve the real-time transmission. When part of the services of the network device 11 through the PDSCH of TRP 111a and the PDSCH of TRP 111b are in continuous transmission mode, and some of the services are in discontinuous transmission mode, for the data of the service in discontinuous transmission mode, the feedback mode of the data reception situation is joint For the data of continuous transmission mode, the feedback mode of the data reception situation is separated feedback. When there is at least one discontinuous transmission mode for the PDSCH through TRP 111a and the PDSCH through TRP 111b, separate feedback may also be used.

Method 2: For example, when the transmission parameter is the throughput index of the service, if the throughput of the service is less than or equal to the throughput threshold, the feedback method of data reception is joint feedback; or, if the throughput of the service is greater than the throughput Threshold, the feedback mode of data reception is separated feedback.

Exemplarily, for example, when the throughput threshold is 20 million bits per second (Mbps), when the throughput index of the service corresponding to the data, the throughput of the service is less than or equal to 20 Mbps, joint feedback can be used To save network resources. When the throughput index of the service is greater than 20 Mbps, separate feedback can be used to improve the throughput of the service by sending the data reception in real time.

Method 3: For example, when the transmission parameter is a service delay index, if the service delay is greater than or equal to the delay threshold, the feedback method of data reception is joint feedback; or, if the service delay is less than the delay When the threshold is set, the feedback mode of the data reception situation is separated feedback.

Exemplarily, for example, when the delay threshold is 1 millisecond (millisecond, ms), when the service delay is greater than or equal to 1ms in the delay index of the data corresponding to the service, the joint type can be used while satisfying the service delay. Feedback to save network resources. When the service delay is less than 1ms, separate feedback can be used to reduce the delay by sending the data reception in real time.

The second method: In some possible implementations, the feedback method of the data reception situation is related to the channel quality of the uplink beam of the terminal device.

Manner 1: For example, including at least one of the following: if the channel quality of at least one uplink beam in the uplink beam is greater than or equal to the second channel quality threshold, it indicates that the channel quality of the at least one uplink beam is better, and the data reception situation is feedback at this time The way can be joint feedback. If the channel quality of the uplink beam is greater than or equal to the first channel quality threshold and less than the second channel quality threshold, it means that the channel quality of each uplink beam is very good, and the data reception can be accurately transmitted on each uplink beam. The feedback mode of the time data reception situation can be separated feedback. Or, if the channel quality of at least one uplink beam in the uplink beam is less than the first channel quality threshold, it indicates that the channel quality of at least one uplink beam is poor. In order to avoid the inaccurate data reception through the uplink beam with poor channel quality, For transmission, the feedback mode of data reception at this time can be joint feedback. Wherein, the second channel quality threshold is greater than the first channel quality threshold.

In actual situations, because the channel quality is affected by multiple factors such as multipath fading and Doppler frequency offset, the channel quality of the wireless network will dynamically change, and the channel quality of the uplink beam will also change dynamically.

Therefore, in method 1, if the channel quality of the uplink beam is changed from both greater than or equal to the first channel quality threshold and less than the second channel quality threshold, the channel quality of at least one uplink beam in the uplink beam is changed to be less than the first channel quality threshold. , The feedback mode of the data reception situation can be changed from separate feedback to joint feedback; if the channel quality of at least one uplink beam in the uplink beam is changed from less than the first channel quality threshold, the channel quality of the uplink beam is changed from both greater than or If it is equal to the first channel quality threshold and less than the second channel quality threshold, the feedback mode of the data reception situation can be changed from joint feedback to separate feedback.

If the channel quality of the uplink beam is changed from both greater than or equal to the first channel quality threshold and less than the second channel quality threshold, to at least one uplink beam in the uplink beam whose channel quality is greater than or equal to the second channel quality threshold, then the data reception situation The feedback mode can be changed from separate feedback to joint feedback; if the channel quality of at least one uplink beam in the uplink beam is greater than or equal to the second channel quality threshold, the channel quality of the uplink beam is changed to be greater than or equal to the first channel If the quality threshold is less than the second channel quality threshold, the feedback mode of the data reception situation can be changed from joint feedback to separate feedback.

If the channel quality of at least one uplink beam in the uplink beam is less than the first channel quality threshold, the channel quality of at least one uplink beam in the uplink beam is greater than or equal to the second channel quality threshold, and then the first uplink beam can be switched It is an uplink beam with a channel quality greater than or equal to the second channel quality threshold; if the channel quality of at least one uplink beam in the uplink beam is greater than or equal to the second channel quality threshold, change to the channel quality of the uplink beam with at least one uplink beam If it is less than the first channel quality threshold, the first uplink beam can be switched to the uplink beam with the best channel quality at this time.

Wherein, the changing process can be changed by sending the first instruction message by the network device.

The above three uplink beams, the traveling beam 1, the uplink beam 2, and the uplink beam 3, are illustrated as examples. At the first moment, the channel quality of the uplink beam 1, the uplink beam 2, and the uplink beam 3 are all greater than the first channel quality threshold and less than the second channel quality threshold. At this time, separate feedback can be used. At the second moment, when the channel quality of the uplink beam 1 becomes less than the first channel quality threshold, joint feedback can be used at this time. At the third moment, after the channel quality of the uplink beam 1 becomes greater than the first channel quality threshold and less than the second channel quality threshold, separate feedback can be used at this time. At the fourth moment, when the channel quality of the uplink beam 3 becomes greater than the second channel quality threshold, joint feedback may be used at this time. At the fifth moment, when the channel quality of the uplink beam 3 becomes greater than the first channel quality threshold and less than the second channel quality threshold, separate feedback can be used at this time.

Manner 2: For example, including at least one of the following: if the Jedi value of the difference in the channel quality of the uplink beams is all less than the difference threshold, it means that the channel quality of each uplink beam is equivalent, and the accuracy of the feedback data reception through each uplink beam is equivalent, At this time, the feedback mode of the data reception situation can be separated feedback. Or, if the Jedi value of the difference between the channel quality of at least two uplink beams is greater than or equal to the difference threshold, it indicates that the channel quality difference of the at least two uplink beams is large, and the feedback data is received through the uplink beam with poor channel quality. The accuracy of the situation is low. At this time, the feedback mode of the data reception situation can be joint feedback, and the uplink beam with better channel quality is selected to feedback the data reception situation.

Since the channel quality of the uplink beam changes dynamically, in mode 2, if there is a difference between the channel quality of at least two uplink beams, the Jedi value is changed from greater than or equal to the difference threshold to the channel quality of the uplink beam. If the difference is less than the difference threshold, the feedback mode of the data reception situation can be changed from joint feedback to separate feedback; if the Jedi value of the difference in the channel quality of the uplink beam is all less than the difference threshold, it is changed to at least two If the Jedi value of the difference between the channel quality of the two uplink beams is greater than or equal to the difference threshold, the feedback mode of the data reception situation can be changed from separate feedback to joint feedback.

The above three uplink beams, the traveling beam 1, the uplink beam 2, and the uplink beam 3, are illustrated as examples. At the first moment, the Jedi value of the channel quality difference between the uplink beam 1 and the uplink beam 2 is less than the difference threshold, and the Jedi value of the channel quality difference between the uplink beam 1 and the uplink beam 3 is less than the difference threshold. The uplink beam 2 and the uplink When the Jedi value of the difference in channel quality of beam 3 is less than the difference threshold, separate feedback can be used. At the second moment, the Jedi value of the difference between the channel quality of the uplink beam 1 and the uplink beam 2 is greater than the difference threshold, and joint feedback can be used at this time. At the third moment, the Jedi value of the difference between the channel quality of the uplink beam 1 and the uplink beam 2 is smaller than the difference threshold. At this time, separate feedback can be used.

In the third manner, in some possible implementation manners, the feedback manner of the data reception situation is related to the transmission parameters of the data and the channel quality of the uplink beam of the terminal device.

Method 1: For example, the data transmission parameter is the data transmission method.

When the data transmission mode is a discontinuous transmission mode, if the channel quality of at least one uplink beam in the uplink beam is greater than or equal to the second channel quality threshold, the feedback mode of the data reception situation at this time may be joint feedback. If the channel quality of the uplink beam is greater than or equal to the first channel quality threshold and less than the second channel quality threshold, the feedback mode of the data reception situation at this time may be separate feedback or joint feedback. Or, if the channel quality of at least one uplink beam in the uplink beam is less than the first channel quality threshold, the feedback mode of the data reception situation at this time may be joint feedback.

Or, when the data transmission mode is continuous transmission, if the channel quality of at least one uplink beam in the uplink beam is greater than or equal to the second channel quality threshold, the feedback mode of the data reception situation at this time can be joint feedback or separate Feedback. If the channel quality of the uplink beam is greater than or equal to the first channel quality threshold and less than the second channel quality threshold, the feedback mode of the data reception situation at this time may be separate feedback. Or, if the channel quality of at least one uplink beam in the uplink beam is less than the first channel quality threshold, the feedback mode of the data reception situation at this time may be joint feedback or separate feedback.

Method 2: For example, the data transmission parameter is the data transmission method.

When the data transmission mode is the discontinuous transmission mode, if the Jedi value of the difference in the channel quality of the uplink beam is less than the difference threshold, the feedback mode of the data reception situation at this time can be separate feedback or joint feedback. If the Jedi value of the difference between the channel quality of at least two uplink beams is greater than or equal to the difference threshold, the feedback mode of the data reception situation at this time may be joint feedback.

Or, when the data transmission mode is a continuous transmission mode, if the Jedi values of the difference in the channel quality of the uplink beam are all less than the difference threshold, the feedback mode of the data reception situation at this time may be a separate feedback. If the Jedi value of the difference between the channel quality of at least two uplink beams is greater than or equal to the difference threshold, the feedback mode of the data reception situation at this time may be joint feedback or separate feedback.

Manner 3: For example, the data transmission parameter is the throughput index of the service.

When the throughput of the service is less than or equal to the throughput threshold, if the channel quality of at least one uplink beam in the uplink beam is greater than or equal to the second channel quality threshold, the feedback mode of the data reception situation at this time may be joint feedback. If the channel quality of the uplink beam is greater than or equal to the first channel quality threshold and less than the second channel quality threshold, the feedback mode of the data reception situation at this time may be separate feedback or joint feedback. Or, if the channel quality of at least one uplink beam in the uplink beam is less than the first channel quality threshold, the feedback mode of the data reception situation at this time may be joint feedback.

Or, when the throughput of the service is greater than the throughput threshold, if the channel quality of at least one uplink beam in the uplink beam is greater than or equal to the second channel quality threshold, the feedback mode of the data reception situation at this time can be joint feedback or separate feedback. Feedback. If the channel quality of the uplink beam is greater than or equal to the first channel quality threshold and less than the second channel quality threshold, the feedback mode of the data reception situation at this time may be separate feedback. Or, if the channel quality of at least one uplink beam in the uplink beam is less than the first channel quality threshold, the feedback mode of the data reception situation at this time may be joint feedback or separate feedback.

Method 4: For example, the data transmission parameter is the throughput index of the service.

When the throughput of the service is less than or equal to the throughput threshold, if the Jedi value of the difference in the channel quality of the uplink beam is less than the difference threshold, the feedback mode of the data reception situation at this time can be separated feedback or joint feedback. If the Jedi value of the difference between the channel quality of at least two uplink beams is greater than or equal to the difference threshold, the feedback mode of the data reception situation at this time may be joint feedback.

Or, when the throughput of the service is greater than the throughput threshold, if the Jedi values of the difference in the channel quality of the uplink beams are all less than the difference threshold, the feedback mode of the data reception situation at this time may be a separate feedback. If the Jedi value of the difference between the channel quality of at least two uplink beams is greater than or equal to the difference threshold, the feedback mode of the data reception situation at this time may be joint feedback or separate feedback.

Mode 5: For example, the data transmission parameter is the service delay index.

When the service delay is greater than or equal to the delay threshold, if the channel quality of at least one uplink beam in the uplink beam is greater than or equal to the second channel quality threshold, the feedback mode of the data reception situation at this time may be joint feedback. If the channel quality of the uplink beam is greater than or equal to the first channel quality threshold and less than the second channel quality threshold, the feedback mode of the data reception situation at this time may be separate feedback or joint feedback. Or, if the channel quality of at least one uplink beam in the uplink beam is less than the first channel quality threshold, the feedback mode of the data reception situation at this time may be joint feedback.

Or, when the service delay is less than the delay threshold, if the channel quality of at least one uplink beam in the uplink beam is greater than or equal to the second channel quality threshold, the feedback mode of the data reception situation at this time can be joint feedback or separate feedback Feedback. If the channel quality of the uplink beam is greater than or equal to the first channel quality threshold and less than the second channel quality threshold, the feedback mode of the data reception situation at this time may be separate feedback. Or, if the channel quality of at least one uplink beam in the uplink beam is less than the first channel quality threshold, the feedback mode of the data reception situation at this time may be joint feedback or separate feedback.

Method 6: For example, the data transmission parameter is the service delay index.

When the service delay is greater than or equal to the delay threshold, if the Jedi value of the difference in the channel quality of the uplink beam is less than the difference threshold, the feedback mode of the data reception situation at this time can be separated feedback or joint feedback. If the Jedi value of the difference between the channel quality of at least two uplink beams is greater than or equal to the difference threshold, the feedback mode of the data reception situation at this time may be joint feedback.

Or, when the service delay is less than the delay threshold, if the Jedi value of the difference in the channel quality of the uplink beam is less than the difference threshold, the feedback mode of the data reception situation at this time may be a separate feedback. If the Jedi value of the difference between the channel quality of at least two uplink beams is greater than or equal to the difference threshold, the feedback mode of the data reception situation at this time may be joint feedback or separate feedback.

When the channel quality of the uplink beam changes dynamically, the feedback modes of the data reception situation can be switched between each other. For details, please refer to the example in the second mode, which will not be repeated in this embodiment.

In the foregoing implementation, the data transmission parameters and the channel quality of the uplink beam are used to determine the feedback mode of the data. The present application may also determine the use of separate feedback or joint feedback according to other parameters. The embodiment of the present application can determine the feedback mode of the data reception condition according to the actual situation, which improves the flexibility of determining the feedback mode of the data reception condition.

The following embodiments will focus on how the terminal device feeds back the data reception status after receiving the first indication information.

FIG. 4 is a schematic flowchart of another method for determining a feedback manner provided by an embodiment of the present application. Fig. 4 is based on Fig. 3, as shown in Fig. 4, the method may include:

S201. The network device sends data.

Correspondingly, the terminal device receives data, and the data is sent by the network device using at least one downlink beam.

S202: The terminal device feeds back the data reception situation according to the feedback mode indicated by the first indication information.

Take the architecture shown in FIG. 2 as an example, and take the data reception situation as ACK/NACK as an example for description.

When the feedback mode indicated by the first indication information is joint feedback, for example, the network device 11 sends data A to the terminal device 12 through the PDSCH of the downlink beam formed by TRP 111a, and sends the data A to the terminal device 12 through the PDSCH of the downlink beam formed by TRP 111b. The device 12 sends data B. After receiving the data A and the data B, the terminal device 12 demodulates the received data A and the data B respectively, and determines the corresponding reception conditions of the data A and the data B. The terminal device 12 sends data A and data B to the network device 11 through the PUCCH of the uplink beam communicatively connected with TRP 111a or the PUCCH of the uplink beam communicatively connected with TRP 111b. The network device 11 receives the data A and data After receiving the status of B, it is determined whether to retransmit data A and/or data B.

In this example, the reception status of data A and data B can be sent to the network device in the form of a codebook, and the codebook can be, for example, a HARQ-ACK codebook.

When the feedback mode indicated by the first indication information is separate feedback, for example, the network device 11 sends data A to the terminal device 12 through the PDSCH of the TRP 111a forming the downlink beam, and the terminal device 12 sends data A to the terminal device 12 after receiving the data A. The received data A is demodulated, and the reception of data A is determined. The terminal device 12 transmits the reception status of the data A to the network device 11 through the PUCCH of the uplink beam that is communicatively connected with the TRP 111a. After receiving the reception status of the data A, the network device 11 determines whether to retransmit the data A.

Similarly, when the network device 11 sends data B to the terminal device 12 through the PDSCH of the TRP 111b forming a downlink beam, the terminal device 12 demodulates the received data B after receiving the data B, and determines the reception of the data B . The terminal device 12 transmits the reception status of the data B to the network device 11 through the PUCCH of the uplink beam communicatively connected with the TRP 111b, and the network device 11 determines whether to retransmit the data B after receiving the reception status of the data B.

In this example, the reception status of data A and data B can be sent to the network device in the form of a codebook, and the codebook can be, for example, a HARQ-ACK codebook.

Among them, the codebook may be a static codebook or a dynamic codebook. For example, when the codebook is a HARQ-ACK codebook, the HARQ-ACK codebook may be a static HARQ-ACK codebook or a dynamic HARQ-ACK codebook.

In a possible implementation manner, the terminal device generates a codebook of data received from each downlink beam according to the feedback mode indicated by the first indication information; the codebook is used to indicate the data received on the downlink beam The codebook is indexed with the uplink beam corresponding to the codebook; according to the index, the codebook is sent on the uplink beam corresponding to each codebook. The codebook may be, for example, a HARQ-ACK codebook. For example, the index may be a mapping table between the identifier of the codebook and the uplink beam corresponding to the codebook.

In some possible implementations, after generating the codebook of the data received from each downlink beam, the following step may be further included: the terminal device generates an index, which is used to establish an uplink beam corresponding to the codebook and the codebook. Associated.

When the feedback mode indicated by the first indication information is joint feedback, in a possible implementation mode, independent HARQ-ACK codebooks can be generated separately for the reception of downlink beam received data, and based on the HARQ-ACK codebook With the index of the uplink beam corresponding to the HARQ-ACK codebook, the HARQ-ACK codebook is sent to the network device through the uplink beam (for example, the first uplink beam) corresponding to each HARQ-ACK codebook.

In another possible implementation manner, a HARQ-ACK codebook can be generated from the reception of data received by the downlink beam, and according to the HARQ-ACK codebook and the corresponding uplink beam index of the HARQ-ACK codebook, the HARQ-ACK code The corresponding uplink beam sends the HARQ-ACK codebook to the network device. Among them, in the HARQ-ACK codebook, the sequence of receiving data received by the downlink beam can be agreed in advance. For example, the sequence can be that the identifiers of the uplink beams are in the descending order or descending order; The sequence of the beam receiving data receiving situation may also be determined according to the indication of the first information.

When the feedback mode indicated by the first indication information is separate feedback, the receiving conditions of the received data of each downlink beam can be generated into independent HARQ-ACK codebooks, and corresponding to HARQ-ACK codebooks and HARQ-ACK codebooks The index of the uplink beam, the respective independent HARQ-ACK codebook is sent to the network device through the uplink beam corresponding to each HARQ-ACK codebook.

It should be noted that the foregoing embodiment may also be applicable to the terminal device generating a codebook of the data after receiving the data, and sending the codebook to the network device on the uplink beam corresponding to each codebook according to the index. The implementation principle and technical effect are similar to the above, and will not be repeated here. That is to say, this embodiment can exist as a separate embodiment, and does not necessarily have to be attached to the feedback mode of the data reception status indicated by the aforementioned network device for the terminal device.

In the embodiment of the present application, after the terminal device receives the data sent by the network device from the downlink beam, when the joint feedback is adopted, the uplink beam that feeds back the data reception situation can be selected according to the actual situation, which improves the flexibility of the feedback reception situation. When the reception status of the data received on the downlink beam is fed back as a whole, the number of times of feedback of the data reception status can be reduced, thereby reducing the overhead of the sending data reception status and saving network resources. When the separate feedback is used, the data reception status can be sent in real time, and the transmission efficiency can be improved.

A person of ordinary skill in the art can understand that all or part of the steps in the foregoing method embodiments can be implemented by a program instructing relevant hardware. The aforementioned program can be stored in a computer readable storage medium. When the program is executed, it executes the steps including the foregoing method embodiments; and the foregoing storage medium includes: ROM, RAM, magnetic disk, or optical disk and other media that can store program codes.

FIG. 5 is a schematic structural diagram of a communication device provided by an embodiment of the present application. As shown in FIG. 5, the device may include: a processing module 21 and a sending module 22. in,

The processing module 21 is used to determine the feedback mode of the terminal device for the data reception situation.

The sending module 22 is configured to send first indication information to the terminal device; the first indication information is used to indicate the feedback mode.

Optionally, in a possible implementation manner, the feedback manner includes: joint feedback, and/or separate feedback, where the joint feedback is feedback by the terminal device on the first uplink beam For the reception status of the data received on the downlink beam, the separated feedback is the terminal device feedback the reception status of the data received on the downlink beam through the uplink beam corresponding to the downlink beam.

Optionally, in a possible implementation manner, the feedback manner is related to the transmission parameter of the data, and/or related to the channel quality of the uplink beam of the terminal device.

For example, the transmission parameter is the transmission mode of the data; if the transmission mode of the data is a discontinuous transmission mode, the feedback mode is joint feedback; and/or, if the transmission mode of the data is continuous Transmission mode, the feedback mode is separated feedback.

Another example includes at least one of the following: if the channel quality of at least one uplink beam in the uplink beam is greater than or equal to the second channel quality threshold, the feedback mode is joint feedback; if the channel quality of the uplink beam is equal Greater than or equal to the first channel quality threshold and less than the second channel quality threshold, the feedback mode is separate feedback; if the channel quality of at least one uplink beam in the uplink beam is less than the first channel quality threshold, the The feedback mode is joint feedback; the second channel quality threshold is greater than the first channel quality threshold.

Optionally, in a possible implementation manner, the feedback manner is the joint feedback, and the first indication information is further used to indicate the first uplink beam.

Optionally, the feedback mode of the terminal device for the data reception situation is the joint feedback.

The sending module 22 is further configured to send second indication information to the terminal device; the second indication information is used to indicate the first uplink beam.

Optionally, the first uplink beam is an uplink beam with the best channel quality among the uplink beams.

The communication device provided in the embodiment shown in FIG. 5 of the present application can execute the actions of the network device in the foregoing method embodiment. For example, the communication device may be the network device itself, or a chip of the network device.

FIG. 6 is a schematic structural diagram of another communication device provided by an embodiment of the present application. As shown in FIG. 6, the device may include: a receiving module 31 and a processing module 32. in,

The receiving module 31 is configured to receive the first indication information from the network device.

The processing module 32 is configured to determine, according to the first indication information, the feedback mode of the terminal device for the data reception situation.

Optionally, in a possible implementation manner, the first indication information is used to indicate a feedback manner of the terminal device for the data reception situation, and the feedback manner includes: joint feedback, and/or separate feedback, The joint feedback is that the terminal device feeds back on the first uplink beam the reception of data received on the downlink beam, and the separate feedback is that the terminal device feeds back the data received on each downlink beam through the uplink beam corresponding to each downlink beam. The reception of the data received on the downlink beam.

Optionally, in a possible implementation manner, the feedback manner is related to the transmission parameter of the data, and/or related to the channel quality of the uplink beam of the terminal device.

For example, the transmission parameter is the transmission mode of the data; if the transmission mode of the data is a discontinuous transmission mode, the feedback mode is joint feedback; and/or, if the transmission mode of the data is continuous Transmission mode, the feedback mode is separated feedback.

Another example includes at least one of the following: if the channel quality of at least one uplink beam in the uplink beam is greater than or equal to the second channel quality threshold, the feedback mode is joint feedback; if the channel quality of the uplink beam is equal Greater than or equal to the first channel quality threshold and less than the second channel quality threshold, the feedback mode is separate feedback; if the channel quality of at least one uplink beam in the uplink beam is less than the first channel quality threshold, the The feedback mode is joint feedback; the second channel quality threshold is greater than the first channel quality threshold.

Optionally, in a possible implementation manner, the feedback manner is the joint feedback, and the first indication information is further used to indicate the first uplink beam.

Optionally, in a possible implementation manner, the feedback manner of the terminal device with respect to the data reception situation is the joint feedback.

The receiving module is further configured to receive second indication information sent by a network device; the second indication information is used to indicate the first uplink beam.

Optionally, in a possible implementation manner, the first uplink beam is an uplink beam with the best channel quality among the uplink beams.

Optionally, in a possible implementation manner, the device further includes: a sending module 33.

The receiving module 31 is also used to receive data.

The sending module 33 is configured to feed back the data reception condition according to the feedback mode indicated by the first indication information.

The sending module 33 is specifically configured to generate a codebook of data received from each downlink beam according to the feedback mode indicated by the first indication information; the codebook is used to indicate that the data is received on the downlink beam For the data reception situation of the codebook, the codebook is indexed with the uplink beam corresponding to the codebook; and the codebook is sent on the uplink beam corresponding to each codebook according to the index.

Optionally, in a possible implementation manner, the codebook is a static codebook or a dynamic codebook.

The communication device provided in the embodiment shown in FIG. 6 of the present application can execute the actions of the terminal device in the foregoing method embodiment. For example, the communication device may be the terminal device itself, or a chip of the terminal device.

It should be noted that it should be understood that the sending module in each of the above embodiments can be a transmitter when actually implemented, and the receiving module can be a receiver when actually implemented, or the sending module and the receiving module are implemented by a transceiver, or the sending module and the receiving module The module is realized through the communication port. The processing module can be implemented in the form of software calling through processing elements; it can also be implemented in the form of hardware. For example, the processing module may be at least one separately set up processing element, or it may be integrated into a certain chip of the above-mentioned device for implementation. In addition, it may also be stored in the memory of the above-mentioned device in the form of program code, which is used by one of the above-mentioned devices. The processing element calls and executes the functions of the above processing modules. In addition, all or part of these modules can be integrated together or implemented independently. The processing element described here may be an integrated circuit with signal processing capability. In the implementation process, each step of the above method or each of the above modules can be completed by an integrated logic circuit of hardware in the processor element or instructions in the form of software.

For example, the above modules may be one or more integrated circuits configured to implement the above methods, such as one or more application specific integrated circuits (ASIC), or one or more microprocessors (digital signal processor, DSP), or, one or more field programmable gate arrays (FPGA), etc. For another example, when one of the above modules is implemented in the form of processing element scheduling program code, the processing element may be a general-purpose processor, such as a central processing unit (CPU) or other processors that can call program codes. For another example, these modules can be integrated together and implemented in the form of a system-on-a-chip (SOC).

FIG. 7 is a schematic structural diagram of another communication device provided by an embodiment of the application. As shown in FIG. 7, the communication device may include: at least one processor 41 (for example, a CPU) and at least one memory 42. FIG. 7 is a schematic diagram of a processor 41 and a memory 42 as an example. The memory 42 may include a high-speed random access memory (random-access memory, RAM), or may also include a non-volatile memory (non-volatile memory, NVM), such as at least one disk memory, and the memory 42 may store various instructions And/or data to complete various processing functions and implement the method steps of the present application. Optionally, the communication device involved in the present application may further include: a power supply 43, a communication bus 44, and a communication port 45. The communication bus 44 is used to implement communication connections between components. The above-mentioned communication port 45 is used to realize connection and communication between the communication device and other peripherals.

In some possible implementations, the aforementioned memory 42 is used to store computer executable program codes, and the program codes include instructions; when the processor 41 executes the instructions, the instructions cause the processor 41 of the communication device to perform the actions of the network equipment in the aforementioned method embodiments. , Its implementation principle and technical effect are similar, so I won’t repeat it here.

FIG. 8 is a schematic structural diagram of still another communication device provided by an embodiment of this application. As shown in FIG. 8, the communication device may include: a processor 51 (for example, a CPU), a memory 52, a receiver 53, a transmitter 54; the receiver 53 and the transmitter 54 are both coupled to the processor 52, and the processor 52 controls the receiving The receiving action of the device 53 and the processor 51 controlling the sending action of the transmitter 54; the memory 52 may include high-speed random-access memory (RAM), or may also include non-volatile memory (non-volatile memory, NVM), such as at least one disk storage. The memory 52 can store various instructions for completing various processing functions and implementing the method steps of the present application. Optionally, the communication device involved in the present application may further include: a power supply 55, a communication bus 56 and a communication port 57. The receiver 53 and the transmitter 54 may be integrated in the transceiver of the communication device, or may be independent transceiver antennas on the communication device. The communication bus 56 is used to implement communication connections between components. The above-mentioned communication port 57 is used to realize connection and communication between the communication device and other peripherals.

In the embodiment of the present application, the above-mentioned memory 52 is used to store computer executable program code, and the program code includes instructions; when the processor 51 executes the instructions, the instructions cause the processor 51 of the communication device to execute the processing of the terminal device in the above-mentioned method embodiment. The action is to make the receiver 53 execute the receiving action of the terminal device in the foregoing method embodiment, and make the transmitter 54 execute the sending action of the terminal device in the foregoing method embodiment. The implementation principles and technical effects are similar, and will not be repeated here.

The embodiment of the present application also provides a computer-readable storage medium on which is stored computer instructions for implementing the method executed by the network device in the foregoing method embodiment or the method executed by the terminal device.

For example, when the computer instruction is executed, the communication apparatus can implement the method executed by the network device in the foregoing method embodiment or the method executed by the terminal device.

The embodiments of the present application also provide a computer program product containing instructions, which when executed, cause the computer to implement the method executed by the network device in the foregoing method embodiments or the method executed by the terminal device.

The embodiment of the present application also provides a communication system, which includes the terminal device and the network device in the above embodiment.

As an example, the communication system includes: the network device and the terminal device in the embodiment described above with reference to FIG. 3.

As an example, the communication system includes: the network device and the terminal device in the embodiment described above with reference to FIG. 4.

As an example, the communication system includes: the communication device described above in conjunction with FIG. 5 and the communication device described in FIG. 6.

As another example, the communication system includes: the communication device described above in conjunction with FIG. 7 or FIG. 8.

In the embodiments of this application, the size of the sequence numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any implementation process of the embodiments of this application. limited.

It should be noted that in this article, the terms "including", "including" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, It also includes other elements that are not explicitly listed, or elements inherent to the process, method, article, or device. If there are no more restrictions, the element defined by the sentence "including a..." does not exclude the existence of other identical elements in the process, method, article, or device that includes the element.

It should be understood that although the terms first, second, third, etc. may be used herein to describe various information, the information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this document, the first information may also be referred to as second information, and similarly, the second information may also be referred to as first information. Depending on the context, the word "if" as used herein can be interpreted as "when" or "when" or "in response to determination". Furthermore, as used herein, the singular forms "a", "an" and "the" are intended to also include plural forms, unless the context indicates to the contrary. It should be further understood that the terms "including" and "including "Indicates that the described features, steps, operations, elements, components, items, types, and/or groups exist, but does not exclude one or more other features, steps, operations, elements, components, items, types, and/or The existence, appearance or addition of groups. The terms "or" and "and/or" used herein are interpreted as inclusive or mean any one or any combination. Therefore, "A, B or C" or "A, B and/or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C" . An exception to this definition will only arise when the combination of elements, functions, steps or operations is inherently mutually exclusive in some way.

It should be understood that, although the steps in the flowchart in the foregoing embodiment are displayed in sequence as indicated by the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless explicitly stated in this article, there is no strict order for the execution of these steps, and they can be executed in other orders. Moreover, at least part of the steps in the figure may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and the order of execution is not necessarily sequential. Instead, it may be performed alternately or alternately with other steps or at least a part of other steps or sub-steps or stages.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the application, not to limit it; although the application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or equivalently replace some or all of the technical features; these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present application. Scope.

Claims (19)

A method for determining a feedback mode, applied to a network device, wherein the method includes: Determine the feedback mode of the terminal equipment for the data reception situation; Sending first indication information to the terminal device, where the first indication information is used to indicate the feedback mode. The method of claim 1, wherein: The feedback method includes: joint feedback, and/or separate feedback, where, The joint feedback is that the terminal device feeds back on the first uplink beam the reception situation of the data received on the downlink beam, The separated feedback is the feedback of the data received on the downlink beam by the terminal device through the uplink beam corresponding to the downlink beam. The method according to claim 1, wherein the feedback mode is related to the transmission parameter of the data, and/or is related to the channel quality of the uplink beam of the terminal device. The method according to claim 3, wherein the transmission parameter is a transmission mode of the data; further comprising: If the data transmission mode is a discontinuous transmission mode, the feedback mode is joint feedback; and/or, If the data transmission mode is a continuous transmission mode, the feedback mode is separate feedback. The method according to claim 3, which comprises at least one of the following: If the channel quality of at least one uplink beam in the uplink beam is greater than or equal to the second channel quality threshold, the feedback mode is joint feedback; If the channel quality of the uplink beam is greater than or equal to the first channel quality threshold and less than the second channel quality threshold, the feedback mode is separate feedback, and the second channel quality threshold is greater than the first channel quality threshold ； If the channel quality of at least one uplink beam in the uplink beams is less than the first channel quality threshold, the feedback mode is joint feedback. The method according to any one of claims 1 to 5, wherein, if the feedback mode is joint feedback, the first indication information is also used to indicate a first uplink beam. The method according to any one of claims 1-5, wherein, if the feedback mode is joint feedback, the method further comprises: Sending second indication information to the terminal device; the second indication information is used to indicate the first uplink beam. A method for determining a feedback mode is applied to a terminal device, wherein the method includes: Receiving first indication information, where the first indication information is used to indicate the feedback mode; Determine, according to the first indication information, a feedback manner of the terminal device for the data reception situation. The method according to claim 8, wherein: The feedback method includes: joint feedback, and/or separate feedback, where, The joint feedback is that the terminal device feeds back on the first uplink beam the reception situation of the data received on the downlink beam, The separated feedback is the feedback of the data received on the downlink beam by the terminal device through the uplink beam corresponding to the downlink beam. The method according to claim 8, wherein the feedback mode is related to the transmission parameter of the data, and/or is related to the channel quality of the uplink beam of the terminal device. The method according to claim 10, wherein the transmission parameter is a transmission mode of the data; further comprising: If the data transmission mode is a discontinuous transmission mode, the feedback mode is joint feedback; and/or, If the data transmission mode is a continuous transmission mode, the feedback mode is separate feedback. The method according to claim 10, which comprises at least one of the following: If the channel quality of at least one uplink beam in the uplink beam is greater than or equal to the second channel quality threshold, the feedback mode is joint feedback; If the channel quality of the uplink beam is greater than or equal to the first channel quality threshold and less than the second channel quality threshold, the feedback mode is separate feedback, and the second channel quality threshold is greater than the first channel quality threshold ； If the channel quality of at least one uplink beam in the uplink beams is less than the first channel quality threshold, the feedback mode is joint feedback. The method according to any one of claims 8-12, wherein, if the feedback mode is joint feedback, the first indication information is also used to indicate a first uplink beam. The method according to any one of claims 8-12, wherein, if the feedback mode is joint feedback, the method further comprises: Receiving second indication information; the second indication information is used to indicate the first uplink beam. The method according to any one of claims 8-12, wherein the method further comprises: Receiving data, the data being sent by a network device using at least one downlink beam; According to the feedback manner indicated by the first indication information, feed back the data reception situation. The method according to claim 15, wherein the step of feeding back the data reception condition according to the feedback mode indicated by the first indication information comprises: According to the feedback mode indicated by the first indication information, a codebook of the data received from each downlink beam is generated; the codebook is used to indicate the reception status of the data received on the downlink beam, and the code Indexing the uplink beam corresponding to the codebook; According to the index, the codebook is sent on the uplink beam corresponding to each codebook. The method according to claim 16, wherein the codebook is a static codebook or a dynamic codebook. A communication device, which includes: at least one processor and a memory; The memory stores computer execution instructions; The at least one processor executes the computer-executable instructions stored in the memory, so that the apparatus executes the method according to claim 1 or 8. A computer-readable storage medium, wherein a computer-executable instruction is stored on the computer-readable storage medium, and when the computer-executable instruction is executed by a processor, the method according to claim 1 or 8 is implemented.

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