WO2020011264A1

WO2020011264A1 - Channel quality notification method, receiving method and device

Info

Publication number: WO2020011264A1
Application number: PCT/CN2019/095876
Authority: WO
Inventors: 花梦; 周涵; 谢振山
Original assignee: 华为技术有限公司
Priority date: 2018-07-13
Filing date: 2019-07-12
Publication date: 2020-01-16
Also published as: CN110719137B; CN110719137A

Abstract

The embodiment of the invention relates to the technical field of communication, in particular to a channel quality notification method, a receiving method and a device for reducing data interruption delay. The solution comprises: a terminal receives a downlink data channel sent by a network equipment; the terminal determines that the downlink data channel is not received correctly, the terminal sends first indication information to the network equipment, and the first indication information is used for indicating the channel quality corresponding to at least one downlink control channel monitored by the terminal. When the network equipment executes a downlink data retransmission, the downlink data channel transmission strategy can be adjusted according to the size of the downlink channel quality received last time, for example, the quality of a sending beam of the downlink data channel transmitted last time can be quickly identified, the sending beam can thus be quickly switched, the downlink data channel transmission can be quickly recovered, and the data interruption delay can be reduced.

Description

Channel quality notification method, receiving method and device

This application claims the priority of a Chinese patent application filed on July 13, 2018 with the State Intellectual Property Office, application number 201810770519.6, and application name "A Channel Quality Notification Method, Receiving Method, and Device", the entire contents of which are incorporated by reference Incorporated in this application.

Technical field

Embodiments of the present application relate to the field of communications technologies, and in particular, to a channel quality notification method, a receiving method, and a device.

Background technique

Compared with the Long Term Evolution (LTE) system, the 5th generation cellular mobile communication system (5th Generation (5G)) is also called a New Radio (NR) system. NR systems use higher carrier frequencies to achieve higher communication rates and capacities. Because the higher the carrier frequency, the greater the path loss of the wireless signal in space, the worse the wireless signal's diffraction and diffraction capabilities, and the more vulnerable it is to the problems of rain or obstacle attenuation, so the NR system uses beamforming technology. By weighting the amplitude and phase values of the signals sent by multiple antennas, the transmitted signals have different powers in different directions in space, that is, a beam with good directivity is formed to improve the signal-to-interference and noise ratio in the direction of the receiving end and suppress Transmit power in these directions to reduce interference. In the same way, the receiving end can also use the beamforming technology to form the receiving beam, increase the receiving power in the direction of the transmitted signal, and reduce the receiving power in the direction of the interference signal.

In the conventional technology, as shown in FIG. 1, when a terminal, such as a user equipment (UE), fails to demodulate a Physical Downlink Shared Channel (PDSCH) used to carry user data, according to the hybrid method, In the Automatic Repeat Request (HARQ) process, the terminal returns a negative response (Negative-Acknowledgment, NACK) to the base station (gNodeB, gNB). The gNB attempts to adjust the PDSCH transmission strategy. For example: Adjust the modulation and coding scheme (MCS) level of the PDSCH to be transmitted, or the number of physical resource blocks (PRBs) and the frequency domain location of the PDSCH, or the transmit beam (Transmitter) of the PDSCH. beam, TX beam), and then retransmit the PDSCH. The terminal attempts to receive and demodulate the retransmitted PDSCH, and if the demodulation is successful, an Acknowledgement (ACK) is fed back. If the demodulation fails, NACK is fed back, and the next PDSCH retransmission is entered until the terminal successfully receives data; or the maximum number of retransmissions is reached, and the corresponding HARQ processing flow is entered.

However, when the terminal feeds back the NACK to the base station, because the current PDSCH TX beam quality is not provided, the following problems may exist: In order to maintain ultra high reliability and ultra low latency communication (URLLC) services, the gNB has high reliability. GNB can only adjust the PDSCH transmission strategy according to preset rules, it can only adjust within a small range, and cannot quickly adapt to the current link quality. In addition, gNB may not be able to detect the PDSCH TXbeam problem in a timely manner, resulting in the poor TXbeam quality and then switching to TXBeam after repeated blind retransmissions, resulting in large data interruption delays.

Summary of the invention

The embodiments of the present application provide a channel quality notification method, a receiving method, and a device, so as to reduce a data interruption delay.

In a first aspect, an embodiment of the present application provides a channel quality notification method. The method includes: a terminal receiving a downlink data channel sent by a network device. The terminal determines that the downlink data channel is not received correctly, and the terminal sends to the network device first indication information used to indicate a channel quality corresponding to at least one downlink control channel monitored by the terminal.

An embodiment of the present application provides a channel quality notification method, in which a terminal receives a downlink data channel sent by a network device. The terminal determines that the downlink data channel is not received correctly, and the terminal sends to the network device first indication information used to indicate a channel quality corresponding to at least one downlink control channel monitored by the terminal. When the network device performs downlink data retransmission, the downlink data channel transmission strategy can be adjusted according to the size of the channel quality corresponding to at least one downlink control channel received last time. For example, the transmission beam of the downlink data channel transmitted last time can be quickly identified. Quality, so as to quickly switch the transmission beam, accelerate the recovery of downlink data channel transmission, reduce data interruption delay, and is suitable for URLLC scenarios.

In a possible implementation manner, the terminal sends the first indication information to the network device through the uplink control channel. The method provided in this embodiment of the present application further includes: the terminal determines the time frequency required by the network device to allocate the uplink control channel to the terminal through the downlink control channel Resources, so that the terminal can send the first instruction information to the network device through the uplink control channel on the allocated time-frequency resources. It is convenient for the network device to receive the first indication information on the allocated time-frequency resources.

In a possible implementation manner, the method provided in the embodiment of the present application further includes: the terminal determines a channel quality corresponding to the at least one downlink control channel according to a demodulation reference signal corresponding to the at least one downlink control channel. The terminal reports the channel quality corresponding to the at least one downlink control channel to the network device, which is convenient for the network device to adjust the transmission strategy of the downlink data channel in time.

In a possible implementation manner, the terminal determining the channel quality corresponding to the at least one downlink control channel according to the demodulation reference signal corresponding to the at least one downlink control channel includes: the terminal calculates according to the demodulation reference signal corresponding to the at least one downlink control channel. Get the physical layer (layer 1)-reference signal received power (Layer 1-Reference Signal Receive Power, L1-RSRP). The terminal calculates a signal-to-interference-plus-noise ratio (SINR) according to L1-RSRP calculation. The terminal obtains a channel quality corresponding to at least one downlink control channel according to the SINR. Because the frequency domain range of the demodulation reference signal corresponding to at least one downlink control channel that the terminal needs to monitor is relatively large, and the demodulation reference signal corresponding to at least one downlink control channel has two types of frequency domain distribution: narrowband and broadband, it is necessary to determine The frequency domain distribution type of the demodulation reference signal corresponding to one downlink control channel can accurately calculate the channel quality corresponding to at least one downlink control channel.

In a possible implementation manner, the method provided in the embodiment of the present application further includes: in the case of the narrowband, the terminal determines that the demodulation reference signal corresponding to the downlink control channel is a candidate time-frequency resource of the downlink control channel that the terminal needs to blindly detect. The terminal determines the downlink channel quality of the at least one downlink control channel according to the demodulation reference signal corresponding to the at least one downlink control channel sent on the candidate time-frequency resource.

In a possible implementation manner, the method provided in the embodiment of the present application further includes: the terminal determines that, in a broadband case, the demodulation reference signal corresponding to at least one downlink control channel is a control resource of a downlink control channel that is blindly detected by the terminal. Sent on all resource element groups (REGs) included in the continuous resource blocks (Resource Blocks (RB) of the Control-Resource Set, CORESET), the terminal corresponding to at least one downlink control channel on all REGs Demodulate the reference signal to determine the channel quality corresponding to at least one downlink control channel.

In a possible implementation manner, the method provided in the embodiment of the present application further includes: the terminal sends second instruction information to the network device, where the second instruction information is used to indicate at least one downlink control channel. It is convenient for the network device to determine which channel quality of the at least one downlink control channel is obtained when receiving the channel quality corresponding to the at least one downlink control channel, thereby effectively adjusting the transmission strategy of the downlink data channel.

In a possible implementation manner, the terminal determines that the downlink data channel is not correctly received, including any of the following: the terminal determines that the downlink data is out of synchronization (for example, the downlink timing of the terminal and the network device is out of synchronization, causing the terminal to fail to receive the downlink data channel correctly) ; Decrease in channel quality caused by an increase in the moving speed of the terminal (for example, Doppler frequency shift spreading); the beamforming vector / precoding matrix / codebook of the downlink data channel does not match the downlink channel; downlink control information (Downlink ControlInformation (DCI) demodulation error; transmission configuration indication states (TCI states) of at least one downlink control channel have completed RRC configuration and MAC-CE activation, and TCI states of downlink data channels have not completed MAC-CE Activated; the terminal cannot correctly receive downlink data after random access (for example, after initial access, RRC connection re-establishment, or cell handover); the terminal cannot correctly receive downlink data after beam failure recovery. After the ON period of the (connected state) discontinuous reception ((Connected) Discontinuous Reception, (C) DRX) arrives, the terminal cannot correctly receive downlink data (for example, Timing Advance timing deviation).

In a second aspect, an embodiment of the present application provides a channel quality notification method, including: a terminal receiving a downlink data channel sent by a network device. The terminal determines that the downlink data channel is not received correctly, and the terminal determines the channel quality corresponding to the downlink data channel and the channel quality corresponding to at least one downlink control channel monitored by the terminal. The terminal sends first indication information to the network device, where the first indication information is used to indicate at least one of a channel quality corresponding to at least one downlink control channel and a channel quality corresponding to the downlink data channel.

An embodiment of the present application provides a channel quality notification method, in which a terminal receives a downlink data channel sent by a network device. The terminal determines that the downlink data channel is not received correctly. The terminal determines the channel quality corresponding to the downlink data channel and the channel quality corresponding to at least one downlink control channel monitored by the terminal, and sends the first indication information to the network device to indicate at least one channel quality. When the network device performs downlink data retransmission, the downlink data channel transmission strategy can be adjusted according to at least one of the channel quality size corresponding to at least one downlink control channel received last time and the channel quality size corresponding to the downlink data channel. For example, It can quickly identify the quality of the transmission beam of the downlink data channel transmitted last time, so as to quickly switch the transmission beam, accelerate the recovery of the downlink data channel transmission, reduce the data interruption delay, and is suitable for URLLC scenarios.

In a possible implementation manner, the method provided in the embodiment of the present application further includes: the terminal sending the second indication information to the network device to indicate at least one channel corresponding to the channel quality. It is convenient for the network device to determine the channel quality when receiving the channel quality according to the demodulation reference signal corresponding to the downlink control channel and / or the demodulation reference signal corresponding to the downlink data channel, thereby effectively adjusting the downlink data channel. Transmission strategy.

In a possible implementation manner, at least one downlink control channel is a downlink control channel that schedules a downlink data channel.

In a possible implementation manner, at least one channel quality is a channel quality that is greater than or equal to a preset threshold between a channel quality corresponding to the at least one downlink control channel and a channel quality corresponding to the downlink data channel, or the highest channel quality. Channel quality, or all channel quality corresponding to the at least one downlink control channel and the downlink data channel.

For the manner in which the corresponding terminal determines that the downlink data channel is not received correctly, reference may be made to the description in the first aspect, and details are not described herein again.

For the manner in which the corresponding terminal sends the first indication information, reference may be made to the description in the first aspect, and details are not described herein again.

For the manner in which the corresponding terminal determines the demodulation reference signal corresponding to the downlink control channel in a narrowband case and a wideband case, reference may be made to the description in the first aspect, and details are not described herein again.

For the manner in which the corresponding terminal determines the channel quality corresponding to the at least one downlink control channel, reference may be made to the description in the first aspect, and details are not described herein again. It can be understood that the manner in which the terminal determines the channel quality corresponding to the downlink data channel can also refer to the manner in which the terminal determines the channel quality corresponding to at least one downlink control channel. The demodulation reference signal corresponding to the data channel.

In a third aspect, an embodiment of the present application provides a channel quality receiving method, including: a network device sends a downlink data channel to a terminal. The network device receives first indication information sent by the terminal and used to indicate channel quality corresponding to at least one downlink control channel monitored by the terminal. The network device determines a channel quality corresponding to the at least one downlink control channel according to the first instruction information.

In a possible implementation manner, the method provided in the embodiment of the present application further includes: the network device receives second instruction information sent by the terminal, and the second instruction information indicates at least one downlink control channel.

In a possible implementation manner, the network device receives the first indication information and / or the second indication information on a time-frequency resource required by the uplink control channel allocated to the terminal.

In a possible implementation manner, the network device allocates time-frequency resources required by the uplink control channel to the terminal through the downlink control channel, so that the terminal can send the first instruction information and / or the first control information on the allocated time-frequency resource through the uplink control channel. Two instructions.

In a fourth aspect, an embodiment of the present application provides a channel quality receiving method, including: a network device sends a downlink data channel to a terminal. The network device receives the first instruction information sent by the terminal. The first indication information is used to indicate at least one of a channel quality corresponding to at least one downlink control channel and a channel quality corresponding to the downlink data channel. The network device determines at least one channel quality according to the first indication information.

In a possible implementation manner, the method provided in the embodiment of the present application further includes: receiving, by the network device, the second indication information indicating the channel corresponding to at least one channel quality sent by the terminal.

In a fifth aspect, the present application provides a channel quality notification device. The channel quality notification device can implement the method in the first aspect or any possible implementation manner of the first aspect, and therefore can also implement the first aspect or any of the first aspect. Beneficial effects in possible implementations. The channel quality notification device may be a terminal or a device that can support the terminal to implement the first aspect or the method in any possible implementation manner of the first aspect, such as a chip applied to the terminal. The channel quality notification device may implement the foregoing method by using software, hardware, or executing corresponding software by hardware.

The channel quality notification device includes a receiving unit configured to receive a downlink data channel sent by a network device. The determining unit is configured to determine that a downlink data channel is not received correctly, and determine a channel quality corresponding to at least one downlink control channel monitored by the terminal. The sending unit is configured to determine, in the determining unit, that the downlink data channel is not received correctly, and send the first indication information to the network device to indicate channel quality corresponding to at least one downlink control channel monitored by the terminal.

In a possible implementation manner, the sending unit is further configured to send second indication information indicating at least one downlink control channel to the network device.

In a possible implementation manner, at least one downlink control channel is a downlink control channel that schedules the downlink data channel.

For various possible implementation manners of the channel quality notification device provided in the fifth aspect, reference may be made to the description in the various possible implementation manners of the first aspect, and details are not described herein again.

In a possible implementation manner, an embodiment of the present application further provides a channel quality notification device. The channel quality notification device may be a terminal or a chip applied in the terminal. The channel quality notification device includes a processor and a communication interface. The communication interface is used to support the channel quality notification device to perform the steps of receiving / sending data / data on the channel quality notification device side described in any one of the first aspect to the first possible implementation manner of the first aspect. The processor is configured to support the channel quality notification device to perform the steps of performing message / data processing on the channel quality notification device side described in any one of the first aspect to the first possible implementation manner of the first aspect. For specific corresponding steps, reference may be made to the description in any one of the possible implementation manners of the first aspect to the first aspect, and details are not described herein again.

Optionally, the communication interface and the processor of the channel quality notification device are coupled to each other.

Optionally, the channel quality notification device may further include a memory for storing codes and data, and the processor, the communication interface, and the memory are coupled to each other.

In a sixth aspect, the present application provides a channel quality notification device. The channel quality notification device can implement the second aspect or the method in any possible implementation manner of the second aspect, and therefore can also implement the second aspect or any of the second aspect. Beneficial effects in possible implementations. The channel quality notification device may be a terminal or a device that can support the terminal to implement the second aspect or the method in any possible implementation manner of the second aspect, such as a chip applied to the terminal. The channel quality notification device may implement the foregoing method by using software, hardware, or executing corresponding software by hardware.

A channel quality notification device includes a receiving unit for receiving a downlink data channel sent by a network device. The determining unit is configured to determine that the downlink data channel is not received correctly, and determine a channel quality corresponding to at least one downlink control channel monitored by the terminal and a channel quality corresponding to the downlink data channel. A sending unit, configured to determine that the downlink data channel is not received correctly in the determining unit, and send first indication information to a network device, where the first indication information is used to indicate a channel quality corresponding to at least one downlink control channel and a downlink data channel corresponding At least one of the channel qualities.

In a possible implementation manner, at least one channel quality is a channel quality that is greater than or equal to a preset threshold between a channel quality corresponding to the at least one downlink control channel and a channel quality corresponding to the downlink data channel, or a channel quality with the highest channel quality. Channel quality, or all channel quality corresponding to the at least one downlink control channel and the downlink data channel.

In a possible implementation manner, the method provided in the embodiment of the present application further includes: sending, by the terminal to the network device, second indication information indicating a channel corresponding to the at least one channel quality.

For the remaining possible implementation manners of the sixth aspect, reference may be made to the various possible implementation manners of the second aspect, and details are not described herein again.

In a possible implementation manner, an embodiment of the present application further provides a channel quality notification device. The channel quality notification device may be a terminal or a chip applied in the terminal. The channel quality notification device includes a processor and a communication interface. The communication interface is used to support the channel quality notification device to perform the steps of receiving / sending data / data on the channel quality notification device side described in any one of the possible implementation manners of the second aspect to the second aspect. The processor is configured to support the channel quality notification device to perform the steps of performing message / data processing on the channel quality notification device side described in any one of the possible implementation manners of the second aspect to the second aspect. For specific corresponding steps, reference may be made to the description in any one of the possible implementation manners of the second aspect to the second aspect, and details are not described herein again.

In a seventh aspect, an embodiment of the present application provides a channel quality receiving device. The channel quality receiving device can implement the third aspect or the method in any possible implementation manner of the third aspect, and therefore can also implement the third aspect or the third aspect. Beneficial effects in any possible implementation of the aspect. The channel quality receiving apparatus may be a network device, or may be an apparatus that can support the network device to implement the third aspect or the method in any possible implementation manner of the third aspect, such as a chip applied to a network device. The channel quality receiving apparatus may implement the foregoing method by using software, hardware, or executing corresponding software by hardware.

A channel quality receiving device includes a sending unit for sending a downlink data channel to a terminal. The receiving unit is configured to receive first indication information sent by the terminal and used to indicate channel quality corresponding to at least one downlink control channel monitored by the terminal. A determining unit, configured to determine a channel quality corresponding to at least one downlink control channel.

In a possible implementation manner, the sending unit is further configured to allocate a time-frequency resource required by the uplink control channel to the terminal through the downlink control channel, and the uplink control channel is used for the terminal to send the first indication information and / or the second indication information.

In a possible implementation manner, the receiving unit is specifically configured to receive the first indication information and / or the second indication information on a time-frequency resource required for an uplink control channel allocated to the terminal.

For the various possible implementation manners of the channel quality receiving apparatus provided in the seventh aspect, reference may be made to the description in the various possible implementation manners of the third aspect, and details are not described herein again.

In a possible implementation manner, an embodiment of the present application further provides a channel quality receiving device. The channel quality receiving device may be a network device or a chip applied to a network device. The channel quality receiving device includes a processor and a communication device. An interface, wherein the communication interface is used to support the channel quality receiving device to perform the steps of receiving / sending data / data on the channel quality receiving device side described in any one of the possible implementation manners of the third aspect to the third aspect . The processor is configured to support the channel quality receiving apparatus to perform the steps of performing message / data processing on the channel quality receiving apparatus side described in any one of the possible implementation manners of the third aspect to the third aspect. For specific corresponding steps, reference may be made to the description in any one of the possible implementation manners of the third aspect to the third aspect, and details are not described herein again.

Optionally, the communication interface and the processor of the channel quality receiving device are coupled to each other.

Optionally, the channel quality receiving device may further include a memory for storing codes and data, and the processor, the communication interface, and the memory are coupled to each other.

In an eighth aspect, an embodiment of the present application provides a channel quality receiving device. The channel quality receiving device can implement the fourth aspect or the method in any possible implementation manner of the fourth aspect, and therefore can also implement the fourth aspect or the fourth aspect. Beneficial effects in any possible implementation of the aspect. The device for receiving channel quality may be a network device, and may also be a device that can support a network device to implement the fourth aspect or the method in any possible implementation manner of the fourth aspect, such as a chip applied to a network device. The channel quality receiving apparatus may implement the foregoing method by using software, hardware, or executing corresponding software by hardware.

A channel quality receiving device includes a sending unit for sending a downlink data channel to a terminal. The receiving unit is configured to receive first indication information sent by the terminal and used to indicate at least one of channel quality corresponding to at least one downlink control channel and channel quality corresponding to the downlink data channel. A determining unit, configured to determine at least one channel quality according to the first instruction information.

In a possible implementation manner, the receiving unit is further configured to receive second indication information sent by the terminal, where the second indication information is used to indicate at least one channel corresponding to channel quality.

In a possible implementation manner, the sending unit is further configured to allocate a time-frequency resource required by the uplink control channel to the terminal through the downlink control channel. The uplink control channel is used for the terminal to send the first indication information and / or the second indication information.

In a possible implementation manner, an embodiment of the present application further provides a channel quality receiving device. The channel quality receiving device may be a network device or a chip applied to a network device. The channel quality receiving device includes a processor and a communication device. An interface, wherein the communication interface is used to support the channel quality receiving device to perform the steps of receiving / sending data / data on the channel quality receiving device side as described in any one of the possible implementation manners of the fourth aspect to the fourth aspect. . The processor is configured to support the channel quality receiving device to perform the steps of performing message / data processing on the channel quality receiving device side described in any one of the possible implementation manners of the fourth aspect to the fourth aspect. For specific corresponding steps, reference may be made to the description in any one of the possible implementation manners of the fourth aspect to the fourth aspect, and details are not described herein again.

In a ninth aspect, the present application provides a computer-readable storage medium. The computer-readable storage medium stores instructions. When the instructions are run on a computer, the computer executes the first aspect or various possible implementations of the first aspect. A channel quality notification method described in the method.

In a tenth aspect, the present application provides a computer-readable storage medium. The computer-readable storage medium stores instructions. When the instructions are run on a computer, the computer is caused to execute the second aspect or various possible implementations of the second aspect. A channel quality notification method described in the method.

In an eleventh aspect, the present application provides a computer-readable storage medium. The computer-readable storage medium stores instructions. When the instructions are run on a computer, the computer is caused to execute the third aspect or the various possible aspects of the third aspect. A channel quality receiving method described in an implementation manner.

In a twelfth aspect, the present application provides a computer-readable storage medium. The computer-readable storage medium stores instructions. When the instructions are run on a computer, the computer is caused to execute the fourth aspect or the various possible aspects of the fourth aspect. A channel quality receiving method described in an implementation manner.

In a thirteenth aspect, the present application provides a computer program product including instructions. When the instructions are run on a computer, the computer is caused to execute the channel quality described in the first aspect or various possible implementation manners of the first aspect. Notification method.

In a fourteenth aspect, the present application provides a computer program product including instructions. When the instructions are run on a computer, the computer is caused to execute the second aspect or a channel quality described in various possible implementation manners of the second aspect. Notification method.

In a fifteenth aspect, the present application provides a computer program product including instructions. When the instructions are run on a computer, the computer is caused to execute the third aspect or a channel quality described in various possible implementation manners of the third aspect. Receiving method.

In a sixteenth aspect, the present application provides a computer program product including instructions. When the instructions are run on a computer, the computer is caused to execute the fourth aspect or a channel quality described in various possible implementation manners of the fourth aspect. Receiving method.

In a seventeenth aspect, an embodiment of the present application provides a chip. The chip includes a processor and an interface circuit. The interface circuit is coupled to the processor, and the processor is configured to run a computer program or instruction to implement the first aspect or each of the first aspect. A channel quality notification method described in a possible implementation manner.

In an eighteenth aspect, an embodiment of the present application provides a chip including a processor and an interface circuit. The interface circuit is coupled to the processor, and the processor is configured to run a computer program or instruction to implement each of the second aspect or the second aspect. A channel quality notification method described in a possible implementation manner.

In a nineteenth aspect, an embodiment of the present application provides a chip. The chip includes a processor and an interface circuit. The interface circuit is coupled to the processor, and the processor is configured to run a computer program or instruction to implement each of the third aspect or the third aspect. A channel quality receiving method described in a possible implementation manner.

In a twentieth aspect, an embodiment of the present application provides a chip. The chip includes a processor and an interface circuit. The interface circuit is coupled to the processor, and the processor is configured to run a computer program or instruction to implement each of the fourth aspect or the fourth aspect. A channel quality receiving method described in a possible implementation manner.

In a twenty-first aspect, an embodiment of the present application provides a communication system including the channel quality notification device described in the fifth aspect or any possible implementation manner of the fifth aspect, and the seventh aspect or the seventh aspect The channel quality receiving device described in any possible implementation of the aspect.

In a twenty-second aspect, an embodiment of the present application provides a communication system including the channel quality notification device described in the sixth aspect or various possible implementation manners of the sixth aspect, and the eighth aspect or the eighth aspect Various possible implementations of the channel quality receiving device are described.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of reporting channel quality provided by the prior art;

2 is a schematic structural diagram of a channel quality reporting system according to an embodiment of the present application;

FIG. 3 is a first schematic structural diagram of a base station according to an embodiment of the present application; FIG.

4 is a second schematic structural diagram of a base station according to an embodiment of the present application;

FIG. 5 is a schematic beam diagram according to an embodiment of the present application;

FIG. 6 is a schematic flowchart of a downlink channel quality notification / reception process according to an embodiment of the present application;

FIG. 7 is a second schematic flow chart of downlink channel quality notification / reception provided by an embodiment of this application;

8 is a first schematic flowchart of another downlink channel quality notification / reception process provided by an embodiment of the present application;

FIG. 9 is another schematic flowchart 2 of downlink channel quality notification / reception provided by an embodiment of this application;

FIG. 10 is a first schematic structural diagram of a channel quality notification device according to an embodiment of the present application; FIG.

11 is a second schematic structural diagram of a channel quality notification device according to an embodiment of the present application;

FIG. 12 is a third schematic structural diagram of a channel quality notification device according to an embodiment of the present application;

FIG. 13 is a schematic structural diagram 1 of a channel quality receiving device according to an embodiment of the present application; FIG.

FIG. 14 is a second schematic structural diagram of a channel quality receiving device according to an embodiment of the present application;

FIG. 15 is a third structural schematic diagram of a channel quality receiving device according to an embodiment of the present application; FIG.

FIG. 16 is a schematic structural diagram of a chip according to an embodiment of the present application.

detailed description

It should be noted that in the present application, words such as "exemplary" or "for example" are used as examples, illustrations or illustrations. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as more preferred or advantageous over other embodiments or designs. Rather, the use of the words "exemplary" or "for example" is intended to present the relevant concept in a concrete manner.

In the present application, "at least one" means one or more, and "multiple" means two or more. "And / or" describes the association relationship of related objects, and indicates that there can be three kinds of relationships, for example, A and / or B can represent: the case where A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural. The character "/" generally indicates that the related objects are an "or" relationship. "At least one or more of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one (a) of a, b, or c can be expressed as: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple .

The terms “first” and “second” in the embodiments of the present application distinguish the same or similar items that have substantially the same function and effect, and do not limit the order. For example, the first instruction information and the second instruction information are only for distinguishing different instruction information, and do not limit their sequence. Those skilled in the art can understand that the words "first" and "second" are not necessarily different.

The communication system and the service scenario described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. Those of ordinary skill in the art may know that with the evolution of the network architecture and the emergence of new service scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems. In the embodiment of the present application, the method provided is applied to a 5G network (NR system) as an example for description.

It should be noted that the method provided in the embodiment of the present application can also be applied to other networks, for example, it can be applied to an Evolved Packet System (EPS) network (that is, commonly referred to as the fourth generation (4th Generation, 4G) ) Network, or LTE network).

In the embodiment of the present application, the network device may be a wireless access device. For example, in the NR system, the network device may be a next-generation base station (gNB), and in the LTE system, the network device may be an evolved base station (eNB). The radio access network device may be an access device for a terminal to wirelessly access the mobile communication system. The wireless access network device may be an access point (Access Point, AP) in WLAN, or an evolved NodeB (eNB, eNodeB, or eNodeB) in Long Term Evolution (LTE). Base Station (Next Generation Node, gNB) in NR). The wireless access network device may also be a wireless backhaul device, an in-vehicle device, a wearable device, and a network device in a future 5G network or a network device in a future evolved PLMN network.

As shown in FIG. 2, FIG. 2 shows a schematic architecture diagram of a communication system provided by an embodiment of the present application. As shown in FIG. 2, the communication system includes one or more terminals 100, and one or more terminals 100 access Go to a wireless network to obtain Internet services through the wireless network, or communicate with other terminals through the wireless network. The wireless network includes a Radio Access Network (RAN) 110. The RAN 110 is configured to access one or more terminals 100 to a wireless network. The RAN 110 may include a radio access network device.

The terminal is wirelessly connected to the wireless access network device, and can access the core network through the wireless access network device. The one or more terminals 100 may be fixed or movable. FIG. 2 is only a schematic diagram, and the communication system may further include other network devices, such as a wireless relay device and a wireless backhaul device, which are not shown in FIG. 2. The embodiments of the present application do not limit the number of radio access network devices and terminals included in the communication system.

Because the future access network can be implemented using a Cloud Radio Access Network (Cloud Radio Access Network, C-RAN) architecture. One possible way is to divide the protocol stack architecture and functions of a traditional base station into two parts: one is called a Centralized Unit (CU), and the other is called a Distributed Unit (DU). The actual deployment of CU and DU is more flexible. For example, the CU parts of multiple base stations are integrated together to form a larger functional network element. As shown in FIG. 3, it is a schematic diagram of a network architecture provided by an embodiment of the present application. As shown in FIG. 3, the network architecture includes a CN device and a RAN device, where the RAN device includes one or more CUs and one or more DUs, and the access network device may be the RAN device. The RAN device can be implemented by one node or multiple nodes. RAN equipment is used to implement Radio Resource Control (RRC), Packet Data Convergence Protocol (PDCP), Radio Link Control (RLC), and Media Access Control (Medium Access Control). MAC) and other protocol layer functions. As shown in Figure 3, the CU and DU can be divided according to the protocol layer of the wireless network. For example, the functions of the protocol layer of the packet data convergence layer and above are set in the CU and the protocol layers below PDCP, including the functions of the RLC and MAC layers Set in DU.

This division of the protocol layer is only an example. It can also be divided at other protocol layers, for example, at the RLC layer. The functions of the RLC layer and above are set in the CU, and the functions of the protocol layers below the RLC layer are set in the DU. Alternatively, it is divided in a certain protocol layer, for example, setting some functions of the RLC layer and functions of the protocol layer above the RLC layer in the CU, and setting the remaining functions of the RLC layer and functions of the protocol layer below the RLC layer in the DU. In addition, it may also be divided in other ways, for example, by delay, and a function that needs to meet the delay requirement in processing time is set in the DU, and a function that does not need to meet the delay requirement is set in the CU.

In addition, please continue to refer to FIG. 3. Compared to the architecture shown in FIG. 4, the control plane (Control Plane, CP) and the user plane (UP) of the CU can also be separated and divided into different network elements for implementation. Control plane CU network element (CU-CP network element) and user plane CU network element (CU-UP network element).

In the above network architecture, data generated by the CU can be sent to the terminal through the DU, or data generated by the terminal can be sent to the CU through the DU. The DU can pass the protocol layer to the terminal or the CU without parsing the data. For example, the signaling at the RRC or PDCP layer will eventually be processed as data at the physical layer (PHY) and sent to the terminal, or it will be transformed from the received data at the PHY layer.

In the above embodiment, the CU is used as the access network device in the RAN. In addition, the CU can also be divided into the access network device in the CN, which is not limited herein.

The devices in the following embodiments of the present application may be located in a terminal or a wireless access network device according to the functions they implement. When the above CU-DU structure is adopted, the access network device may be a CU node, or a DU node, or a RAN device including the functions of the CU node and the DU node.

A terminal is a device that provides voice and / or data connectivity to a user, such as a handheld device with a wireless connection function, a vehicle-mounted device, and the like. The terminal can also be referred to as User Equipment (UE), Access Terminal (Access Terminal), User Unit (User Unit), User Station (Mobile Station), Mobile Station (Mobile Station), Mobile Station (Mobile), Remote Station (Remote Station), remote terminal (Remote Terminal), mobile device (Mobile Equipment), user terminal (User Terminal), wireless communication equipment (Wireless Telecom Equipment), user agent (User Agent), user equipment (User Equipment) or User device. The terminal can be a station (Station) in a Wireless Local Area Networks (WLAN), a cell phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop) , WLL) stations, Personal Digital Processing (PDA) devices, handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, and next-generation communication systems (such as , A terminal in a fifth-generation (Fifth-Generation (5G) communication network) or a terminal in a future evolved Public Land Mobile Network (PLMN) network. Among them, 5G can also be called New Radio (NR).

As an example, in the embodiment of the present application, the terminal may also be a wearable device. Wearable devices can also be referred to as wearable smart devices, which are the general name for applying wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes. A wearable device is a device that is worn directly on the body or is integrated into the user's clothing or accessories. Wearable devices are not only a hardware device, but also powerful functions through software support, data interaction, and cloud interaction. Broad-spectrum wearable smart devices include full-featured, large-sized, full or partial functions that do not rely on smart phones, such as smart watches or smart glasses, and only focus on certain types of application functions, and need to cooperate with other devices such as smart phones Use, such as smart bracelets, smart jewelry, etc. for physical signs monitoring.

The beam (Beam) is the main lobe of the radiation pattern of the antenna array and is identified by a reference signal. The reference signal used to identify the beam may be, for example, Channel State Information-Reference Signal (CSI-RS). Alternatively, a synchronization signal block (Synchronization Signal Block, SS Block, SSB), or other reference signals. A beam ID may be identified by identification information (eg, ID) of a reference signal.

Before introducing this application, first introduce the beam management process:

The NR protocol specifies related beam management processes: beam measurement, reporting, and scanning mechanisms to complete uplink beam management / downlink beam management. Among them, the downlink beam management determines a transmission beam of a network device and a reception beam (RX beam) of a terminal, that is, a downlink beam pair (DL, Pair Link, DL). The uplink beam management determines the transmitting beam of the terminal and the receiving beam of the gNB, that is, the uplink beam pair (UL, Pair, UL, BPL). For example, the P-1, P-2, and P-3 processes for downlink beam management:

P-1 process: The terminal measures different TRP (Transmit / Receive Point, transmitting and receiving points, front end of the transmitting and receiving antenna of the base station. A base station may have multiple transmitting and receiving antenna front ends, and can only send or receive wireless signals, without baseband The transmission beam or data transmission beam) supports beamforming on the TRP side, including intra-TRP / cross-TRP transmit beam scanning; it also supports beamforming on the terminal side, that is, the terminal receives beam scanning.

P-2 process: The terminal adjusts the transmission beams in / over the TRP by measuring the transmission beams of different TRPs.

P-3 process: The terminal adjusts different receiving beams by measuring the same transmitting beam.

Through the P-1 process, then the P-2 process, and then the P-3 process; or the P-1 process and then the P-2 process and the P-3 process at the same time, the terminal determines a transmission beam of the network device and the terminal's One receive beam (downlink beam to link), so that there is better received signal gain in the transmitting direction and receiving direction.

After the terminal accesses the network, a downlink beam pair link is formed through the foregoing beam management process. Because the service requirements of the control channel and data channel are different, such as: data rate, signal coverage, etc. The gNB may send a physical downlink control channel (PDCCH) to the terminal through a wide transmit beam (wide TX beam) to distribute the power of the transmitted signal over a wide space to ensure that more terminals can receive control Signal, which improves coverage. The physical downlink control channel is used to carry scheduling information and other control information.

As shown in FIG. 5, the network device may form multiple transmitting beams or receiving beams using beamforming technology (such as digital beamforming or analog beamforming). The angles covered by each beam may be the same or different, and different coverage angles may be used. There may be overlapping parts of the beam. For example, a network device may send control information using a transmission beam with a wide coverage angle, and send data information using a transmission beam with a narrow coverage angle. The terminal may receive control information or data information sent by the network device within the coverage of one or more of the receiving beams, the receiving beam set, or the receiving beam group.

The terminal may also form multiple receiving beams through beamforming technology, corresponding to the downlink transmitting beams used by the network device, and determining to use one or more receiving beams for reception. For convenience of description, the beams involved in the embodiments of the present application may refer to single or multiple beams.

Therefore, a downlink transmission beam of a network device and a reception beam of a corresponding terminal, or an uplink transmission beam of a terminal and a reception beam of a corresponding network device may be referred to as a beam pair. The transmission link formed by the beam pair is called a beam pair link (BPL).

For example, when the network device in FIG. 5 uses beam 3 as a downlink transmission beam, the terminal may determine to use beam 6 as a corresponding receiving beam. At this time, the beam 3 and the beam 6 form a pair of BPLs. When the beam of the network device or the terminal meets the beam reciprocity characteristic, the corresponding receiving beam or transmitting beam may be determined by the transmitting beam or receiving beam.

The beam in the embodiment of the present application can be understood as a space resource, and can refer to sending or receiving a precoding vector with directivity of energy transmission. The transmitted or received precoding vector may be identified by index information. Among them, on the one hand, the directivity of energy transmission may mean that within a certain spatial position, the signal received after the precoding vector is subjected to precoding processing has better receiving power, such as satisfying the receiving demodulation signal-to-noise ratio. On the other hand, the energy transmission directivity can also mean that the same signal sent from different spatial locations received by the precoding vector has different received powers.

In the 5LC URLLC business scenario, in order to increase the communication rate with terminals in a certain direction, gNB may focus the transmission power in that direction and form a narrow transmit beam (narrow TX beam) to send physical downlink sharing of user data to the terminal. Channel (Physical, Downlink, Shared Channel, PDSCH) to improve the received signal gain in order to apply higher MCS levels. The control and data downlink beam pairs are independent.

When the terminal moves, rotates, or sends the narrow TXTX beam of the PDSCH suddenly blocked by an obstacle, the received signal gain of the terminal may decrease, which may cause PDSCH data demodulation errors. And the wide TX beam that sends the PDCCH still works normally, and the terminal can still receive the PDCCH normally. Therefore, in the prior art, the terminal only feedbacks the NACK to the network device, which may cause the network device to adjust the PDSCH transmission strategy within a small range, fail to quickly adapt to the current link quality, and fail to detect the PDSCH TXbeam problem in a timely manner. Based on this, the channel quality reporting method provided in the present application reports the channel quality corresponding to at least one downlink control channel monitored by the terminal to the network device when it is determined that the downlink data channel is not received correctly, or reports the channel quality corresponding to at least one downlink control channel. Channel quality and channel quality corresponding to the downlink data channel, or report channel quality corresponding to at least one downlink control channel and channel quality of the downlink data channel that is greater than or equal to a preset threshold, or report channel quality and downlink corresponding to at least one downlink control channel The highest channel quality among the channel qualities corresponding to the data channel, because the downlink channel quality is physically the channel quality of the air interface channel where TX beam is located. In this way, the network equipment can obtain the TX quality information in time, and assist the network equipment to adjust the transmission strategy of the downlink data channel in time.

An embodiment of the channel quality notification method in the embodiment of the present application may be a terminal or a device supporting the terminal to implement the method, such as a device applied to a terminal, such as a chip. A channel quality receiving method may be executed by a network device or an apparatus for supporting the network device to implement the method, such as an apparatus applied to a network device, such as a chip. In the following embodiments, the execution subject of a channel quality notification method is taken as a terminal, and the execution subject of a channel quality reception method is taken as a network device as an example.

As shown in FIG. 6, a schematic flowchart of interaction between a channel quality notification and receiving method provided by an embodiment of the present application includes:

S101. A network device (for example, a base station) sends a downlink data channel to a terminal.

Exemplarily, the downlink data channel in the embodiment of the present application may be a physical downlink shared channel (Physical Downlink Shared Channel, PDSCH).

It can be understood that, in the embodiment of the present application, the network device sending the downlink data channel to the terminal may refer to: the network device sending a demodulation reference signal (for example, PDSCH / DMRS) corresponding to the downlink data channel to the terminal. Optionally, before step S101, the method provided in the embodiment of the present application further includes: the network device sends at least one downlink control channel to the terminal. The at least one downlink control channel is used to schedule a downlink data channel. The downlink control channel carries Downlink Control Information (DCI), and the DCI is used to indicate an initial transmission strategy of the PDSCH. For example, the initial transmission strategy of PDSCH can be the transmit beam (Transmitter, TX, Beam) of PDSCH, the number of Physical Resource Blocks (PRB), the frequency domain location of PRB, MCS level, and the terminal used to report NACK / CQI. Information of an uplink control channel (for example, a physical uplink control channel (PUCCH)) and time-frequency resources occupied by the uplink control channel.

Exemplarily, the time-frequency resources allocated by the network device to the terminal include time-frequency resources 1, time-frequency resources 2, and time-frequency resources 3. The time-frequency resource 1 is associated with the uplink control channel 1, that is, the time-frequency resource required by the uplink control channel 1 is the time-frequency resource 1. The time-frequency resource 2 is associated with the uplink control channel 2, that is, the time-frequency resource required by the uplink control channel is the time-frequency resource 2. The time-frequency resource 3 is associated with the uplink control channel 3, that is, the time-frequency resource required by the uplink control channel 3 is the time-frequency resource 3.

Sending at least one downlink control channel by the network device to the terminal may refer to: sending, by the network device, a demodulation reference signal (Demodulation Reference Signal, DMRS) (for example, PDCCH DMRS) corresponding to each downlink control channel in the at least one downlink control channel.

For example, the downlink control channel may be a physical downlink control channel (Physical Downlink Control Channel, PDCCH).

Optionally, before step S101, the method further includes: receiving, by the terminal, at least one downlink control channel sent by the network device. Specifically, the terminal receives a demodulation reference signal corresponding to each downlink control channel in at least one downlink control channel.

For example, the network device may send a downlink data channel in the TX beam indicated by the DCI carried in the downlink control channel, so that the terminal can receive the downlink data channel in the RX beam (receive beam) corresponding to the TX beam indicated by the DCI. .

S102. The terminal receives a downlink data channel sent by a network device.

Specifically, the terminal receiving the downlink data channel sent by the network device includes: the terminal receiving the demodulation reference signal corresponding to the downlink data channel sent by the network device.

Exemplarily, the terminal may receive the downlink data channel on the RX beam (receive beam) corresponding to the TX beam indicated by the network device through the downlink control channel.

S103. The terminal determines, when the downlink data channel is not received correctly, the channel quality corresponding to at least one downlink control channel monitored by the terminal.

In the implementation process, the terminal may determine the channel quality corresponding to at least one downlink control channel at any time, and directly report the channel quality corresponding to at least one downlink control channel when it is determined that the downlink data channel is not received correctly. The terminal may also determine the channel quality corresponding to at least one downlink control channel monitored by the terminal when the downlink data channel is not received correctly. This embodiment of the present application does not limit the time when the terminal determines the channel quality corresponding to at least one downlink control channel.

Exemplarily, the at least one downlink control channel is a downlink control channel that schedules a downlink data channel.

It can be understood that the at least one downlink control channel is a partial downlink control channel or all downlink control channels among a plurality of downlink control channels monitored by the terminal. For example, if the number of downlink control channels monitored by the terminal is five, at least one downlink control channel may be the five downlink control channels, or may be a part of the five downlink control channels. This embodiment of the present application does not limit this.

The channel quality corresponding to the at least one downlink control channel monitored by the terminal refers to the channel quality of each downlink control channel in the at least one downlink control channel monitored by the terminal. For example, if at least one downlink control channel monitored by the terminal is PDCCH1, PDCCH2, and PDCCH3, the terminal obtains the channel quality of each PDCCH from PDCCH1 to PDCCH3. That is, CQI _PDCCH1 , CQI _PDCCH2, and CQI _PDCCH3 .

The downlink channel quality may be a channel quality indicator (CQI).

Exemplarily, the terminal determines that the downlink data channel is not correctly received, including any of the following: the terminal determines that the downlink data is out of sync (for example, the downlink timing of the terminal and the network device is out of synchronization, causing the terminal to fail to receive the downlink data channel correctly); the movement of the terminal Degraded channel quality due to increased speed (for example, Doppler frequency shift spreading); beamforming vector / precoding matrix / codebook of the downlink data channel does not match the downlink channel; downlink control information DCI demodulation error; at least one downlink Transmission channel configuration indication states (TCI states) of the control channel have completed RRC configuration and MAC-CE activation, while TCI states of the downlink data channel have not completed MAC-CE activation; the terminal cannot receive correctly after random access Downlink data (for example, after initial access, RRC connection re-establishment, and cell handover); the terminal cannot correctly receive downlink data after beam failure recovery (beam failure recovery). After the ON period of the (connected state) discontinuous reception ((Connected) Discontinuous Reception ((C) DRX)) arrives, the terminal cannot correctly receive downlink data (for example, Timing Advance timing deviation).

As a possible implementation manner, the terminal determining a channel quality corresponding to at least one downlink control channel monitored includes: the terminal according to a demodulation reference signal (Demodulation Reference Signal, DMRS) corresponding to each downlink control channel in the at least one downlink control channel. ) To obtain the channel quality corresponding to each downlink control channel.

Specifically, the terminal determines the channel quality corresponding to the at least one downlink control channel according to the demodulation reference signal (Demodulation Reference Signal, DMRS) corresponding to the at least one downlink control channel, which may be specifically implemented by the terminal according to at least one downlink control channel. The demodulation reference signal corresponding to each downlink control channel is calculated to obtain the layer 1-reference signal received power corresponding to each downlink control channel. The terminal calculates the corresponding signal-to-interference and noise ratio (SINR) of each downlink control channel according to the L1-RSRP corresponding to each downlink control channel. The terminal obtains the channel quality of each downlink control channel according to the SINR corresponding to each downlink control channel.

Because there is a difference in the position of the demodulation reference signal corresponding to at least one downlink control channel between the network device in the narrowband case and the broadband case, for example, in the narrowband case, the network device can blindly detect the candidate of the downlink control channel that the terminal needs. A demodulation reference signal corresponding to at least one downlink control channel is sent on the time-frequency resource. In the case of broadband, the network device can blindly detect all resource element groups (Resource Element) contained in the continuous resource block (RB) of the control resource set (Control-Resource Set, CORESET) of the downlink control channel required by the terminal. Group (REG) sending at least one demodulation reference signal corresponding to the downlink control channel. Therefore, the following embodiments respectively introduce that in different situations, the terminal determines the channel quality corresponding to at least one downlink control channel.

As another embodiment of the present application, the method provided in the embodiment of the present application further includes: the terminal determines that, in a narrow band situation, the demodulation reference signal corresponding to at least one downlink control channel is a candidate for the downlink control channel that the terminal needs to blindly detect When sent on the time-frequency resource, the terminal determines the channel quality corresponding to the at least one downlink control channel according to the demodulation reference signal corresponding to the at least one downlink control channel sent on the candidate time-frequency resource.

Here, the candidate time-frequency resources of the downlink control channel represent time-frequency resources (generally, there are multiple candidate time-frequency resources) that may send control information. The terminal needs to try to blindly detect the downlink control information on these candidate time-frequency resources.

Optionally, as still another embodiment of the present application, the method provided in the embodiment of the present application further includes: the terminal determines that, in a broadband case, the demodulation reference signal corresponding to at least one downlink control channel is a downlink that is blindly detected by the terminal. For all REGs included in consecutive RBs of the control resource set (CORESET) of the control channel, the terminal determines the channel quality corresponding to at least one downlink control channel according to the demodulation reference signals corresponding to at least one downlink control channel on all REGs.

Here, RB represents a concept in the frequency domain, that is, 12 subcarriers. REG represents a concept of time-frequency resources, that is, 12 subcarriers in a slot time. The DMRS of the downlink control channel (for example, PDCCH) is distributed at a density of 1/4 on the REG, that is, the first 1, 5, 9 REs.

Among them, CORESET can be understood as a set of time-frequency resources. In the time domain, a CORESET can be configured as one or several orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbols; in the frequency domain, a CORESET can be a group of continuous or non- Consecutive frequency domain resources, including search space at different aggregation levels.

Further, the layer 1-reference signal received power is an average value of the received signal power of all resource elements (Resource Elements, REs) carrying the DMRS within a certain symbol (Symbol), that is, the average received power of each DMRS and RE. Calculated through measurement.

At the same time, the terminal measures the received signal strength indicator (RSSI), that is, the total received signal power of all REs in the Symbol and the DMRS bandwidth of the PDCCH, that is, all received signals (including pilot signals and data signals). , Interference signals, noise signals, etc.).

Assuming M _{DMRS is} the total number of DMRS REs in the DMRS bandwidth of the Symbol and the PDCCH, and assuming M _SC is the total number of REs in the DMRS bandwidth of the Symbol and the PDCCH, we can get: the total of all DMRSs in the Symbol and the DMRS bandwidth of the PDCCH Received power RP _DMRS : RP _DMRS = RSRP * M _DMRS . The total received power RP _{PDSCH of} this Symbol and all PDSCH REs (all REs remaining after DMRS RE removal) within the DMRS bandwidth of the PDCCH. Among them, RP _PDSCH = RSRP * p * (M _SC -M _DMRS ). Here, p represents pB or pA, and both represent the ratio of the energy per resource element (EPRE) of the PDSCH to the EPRE of the DMRS. The symbol and the power of all interference and noise RP _IN within the PDCCH DMRS bandwidth: where RP _IN = RSSI-RP _DMRS -RP _PDSCH . SINR within the DMRS bandwidth of the Symbol and the PDCCH: where SINR = (RP _DMRS + RP _PDSCH ) / RP _IN .

As a possible implementation manner: for example, the terminal obtains the channel quality of each downlink control channel according to the SINR corresponding to each downlink control channel, which can be implemented in the following manner: the terminal corresponds to each of the downlink control channels. The SINR and the preset mapping relationship between one or more SINRs and the channel quality corresponding to each SINR in the one or more SINRs determine the respective channel quality of each downlink control channel. In this way, after determining the SINR, the terminal can determine the channel quality that has a mapping relationship with the SINR from the mapping relationship.

Exemplarily, the mapping relationship may be configured for a terminal by a network device. The mapping relationship may also be pre-configured for the terminal.

An example, the mapping relationship may exist in the form of a table, as shown in Table 1:

Table 1 Mapping relationship between SINR and channel quality

SINRSINR	信道质量Channel quality
SINR1SINR1	CQI1CQI1
SINR2SINR2	CQI2CQI2

For example, if the terminal determines that the SINR corresponding to the downlink control channel is SINR1, it can determine that the channel quality corresponding to the downlink control channel is CQI1 through Table 1 above.

In another example, the mapping relationship may exist in the form of a linear or non-linear mapping table. For example, assuming that the maximum SINR is SINRmax, a uniform and linear mapping table can be designed as: N equal divisions in the interval [0, SINRmax], and then one by one from small to large corresponding to the value [0, 1, ..., 15], so The corresponding value can be used as the CQI.

Here, N is an integer greater than or equal to 1. For example, N can be 16.

S104. The terminal sends first indication information to the network device, where the first indication information is used to indicate a channel quality corresponding to at least one downlink control channel.

Exemplarily, the terminal may use a bit in the uplink control channel (for example, PUCCH) indicated by the downlink control channel to indicate the channel quality corresponding to the at least one downlink control channel by the network device. That is, the first indication information is carried in an uplink control channel.

Specifically, step S104 can be implemented in the following manner: the terminal determines that the network device allocates time-frequency resources required by the terminal to the uplink control channel through the downlink control channel, and the terminal sends the first instruction information to the allocated time-frequency resource through the uplink control channel. Internet equipment.

Optionally, the uplink control channel can also be used to report an acknowledgement character (Acknowledgement, ACK) / negative response (Negative acknowledgement, NACK).

Exemplarily, if the terminal determines that the time-frequency resource of the uplink control channel allocated by the network device to the terminal is time-frequency resource 1, the terminal sends on the time-frequency resource 1 through the uplink control channel indicated by the network device in the downlink control channel. First indication information.

S105. The network device receives the first instruction information sent by the terminal.

Specifically, the network device may receive the first indication information sent by the terminal through the uplink control channel on the time-frequency resource of the uplink control channel allocated to the terminal. By receiving the first indication information on the allocated time-frequency resources, it is possible to prevent the network device from receiving the first indication information sent by the terminal on multiple time-frequency resources, thereby reducing the time for obtaining the first indication information.

Specifically, the network device and the terminal can negotiate which uplink control channel is used to send the position of the time-frequency resource of the first indication information, so that the network device can receive, on the corresponding time-frequency resource, the terminal sent by the terminal using the uplink control channel indicated by the network device. First indication information.

S106. The network device determines a channel quality corresponding to the at least one downlink control channel according to the first instruction information.

Optionally, the method provided in the embodiment of the present application further includes: the network device adjusts a transmission strategy of the downlink data channel according to a channel quality corresponding to at least one downlink control channel.

Exemplarily, the network device may adjust the transmission strategy of the downlink data channel in the following manner: The network device decides to re-select a TX beam to send the PDSCH according to its own implementation. Specifically, the network device first sends a downlink control channel (PDCCH1) through TX beam1, and then the network device sends a downlink data channel (PDSCH) through TX beam2, and uses a higher MCS level. However, the terminal cannot correctly demodulate the PDSCH, and feeds back a CQI (can be referred to as CQI _PDCCH1 ) obtained from a demodulation reference signal (DMRS) corresponding to the downlink control channel ( _PDCCH1 ). The network device can then determine the quality of TX beam1 sending the downlink control channel (PDCCH1). At this time, the network device can either lower the MCS level and continue to send the next PDSCH retransmission on the original PDSCH TX beam2, or select the original PDCCH TX beam1 to send the next PDSCH retransmission. Specifically, selecting a TX beam means selecting a signal transmission direction in a power set identified by a certain reference signal ID. The network device then enters the retransmission phase, sending the PDCCH first and then the PDSCH. The terminal receives the PDCCH, measures the PDCCH DMRS, and calculates the CQI _PDCCH , and then receives and attempts to demodulate the PDSCH based on the PDSCH TX beam, the PRB number, and the frequency domain location of the PRB indicated by the DCI, and simultaneously measures the PDSCH DMRS and calculates the CQI _PDSCH. . If the terminal successfully demodulates the PDSCH, the terminal may feedback the ACK on the PUCCH resource indicated by the network device. Otherwise, enter the following steps: The terminal selects the CQI _PDCCH and CQI _PDSCH to report the better CQI value and corresponding DMRS information to the network device according to the measured CQI _PDCCH and CQI _PDSCH , and the network device according to the received CQI and corresponding DMRS information , Adjust the PDSCH retransmission strategy again ... until the terminal correctly demodulates the PDSCH, feeds back an ACK, and ends. Or the maximum number of retransmissions is reached, and the corresponding HAQR processing flow is entered. After that, if the network device enters the PDSCH initial transmission / retransmission again, the terminal feeds back according to the above steps.

It should be noted that, in the embodiment of the present application, when the terminal determines that the downlink data channel is correctly received, the terminal may feed back the ACK to the network device on the time-frequency resources required by the network device for the uplink control channel allocated by the terminal.

It should be noted that the network device can determine the size of the channel quality reported by the terminal through steps S101 to S106. However, in the actual process, the number of downlink control channels monitored by the terminal may be two or more. Therefore, in order to enable the network device to determine which of the at least one channel quality after receiving the channel quality corresponding to the at least one downlink control channel, The channel quality is obtained according to which downlink control channel. As another embodiment of the present application, as shown in FIG. 7, the method provided in the embodiment of the present application further includes:

S107. The terminal sends second instruction information to the network device, where the second instruction information is used to indicate at least one downlink control channel.

Specifically, the second indication information is used to indicate information of at least one downlink control channel. For example, the second indication information includes an index of each downlink control channel in the at least one downlink control channel.

It can be understood that the first indication information is used to indicate to the network device the size of the reported channel quality. The second indication information is used to indicate to the network device which channel quality or the downlink control channel reported by the terminal is obtained.

The first indication information and the second indication information may be carried in the same uplink control channel and sent to the network device. The first indication information and the second indication information may also be carried in different uplink control channels and sent to the network device, which is not limited in the embodiment of the present application.

Exemplarily, if the number of at least one downlink control channel monitored by the terminal is m (m is an integer greater than or equal to 1), and the terminal reports the channel quality of only one downlink control channel by using the first instruction information, the present The size of the second indication information in the embodiment of the application may be n bits, where n = ceil [log2 (m)], and the ceil [] function means rounding up, that is, the terminal can use n bits (bits) ) Indicates an index of a downlink control channel reported.

Taking the first indication information and the second indication information can be carried in the same uplink control channel and sent to the network device as an example, the terminal can use the remaining bits in the uplink control channel except for the bits occupied by the second indication information. Carry the first indication information, and report the size of the downlink channel quality, that is, the specific value of the CQI.

It should be noted that when the terminal reports the second indication information to the network device, the network device needs to determine which bit or bits in the time-frequency resource of the uplink control channel are associated with the second indication information.

In one example, the terminal and the network device may pre-negotiate which bit or bits in the time-frequency resource of the uplink control channel are associated with the second indication information. Or the network device specifies to the terminal which bit or bits of the time-frequency resource using the uplink control channel are associated with the second indication information. Or after receiving the time-frequency resource occupied by the uplink control channel, the terminal determines which bit or bits of the time-frequency resource of the uplink control channel are associated with the second indication information and sends the indication information to the network device, so that the network The device determines which / bits in the time-frequency resource of the uplink control channel are associated with the second indication information.

S108. The network device receives the second instruction information.

Specifically, the network device may receive the second instruction information sent by the terminal through the uplink control channel on the time-frequency resource of the uplink control channel allocated to the terminal.

It should be noted that, in the embodiment of the present application, when the terminal successfully demodulates the downlink data carried by the downlink data channel, the terminal may directly feedback the ACK to the network device. When the terminal fails to demodulate the downlink data carried by the downlink data channel, the terminal may determine the channel quality according to the method provided in the embodiment of the present application, and send the determined channel quality to the network device through the uplink control channel.

As another embodiment of the present application, after step S108, the method further includes:

The network device determines, according to the second instruction information, information about a downlink control channel corresponding to each channel quality among the channel qualities corresponding to the at least one downlink control channel.

The downlink control channel information is used to determine a downlink control channel corresponding to the channel quality. For example, the information of the downlink control channel may be an index of the downlink control channel.

It should be noted that in the embodiment of the present application, when the network device sends a demodulation reference signal corresponding to a downlink control channel to the terminal and the number of downlink control channels monitored by the terminal is one, steps S107 and S108 may be omitted. That is, the network device only needs to determine the channel quality of the downlink control channel according to the first instruction information, and it does not need to receive the second instruction information to identify the index of the downlink control channel corresponding to the channel quality reported by the terminal.

As shown in FIG. 6 to FIG. 7, a terminal can receive a demodulation reference signal corresponding to a downlink control channel sent by a network device, and obtain a channel quality according to the demodulation reference signal corresponding to the downlink control channel. But in the actual process, the terminal can also receive the demodulation reference signal corresponding to the downlink control channel and the demodulation reference signal corresponding to the downlink data channel sent by the network device, and obtain the channel quality CQI according to the demodulation reference signal corresponding to the downlink control channel _{The PDCCH} and the channel quality indicator CQI _{PDSCH are} obtained according to the demodulation reference signal corresponding to the downlink data channel. Based on this, as shown in FIG. 8, an embodiment of the present application provides a schematic flowchart of interaction between another channel quality notification and receiving method. The method includes:

S201. The network device sends a downlink data channel to the terminal.

For the description in step S201, reference may be made to the description in step S101, and details are not described herein again.

S202. The terminal receives a downlink data channel sent by a network device.

For the description in step S202, reference may be made to the description in step S102, and details are not described herein again.

S203. The terminal determines that the downlink data channel is not received correctly, and the terminal obtains the channel quality corresponding to the downlink data channel and the channel quality corresponding to at least one downlink control channel monitored by the terminal.

For the manner in which the terminal determines that the downlink data channel is not correctly received, reference may be made to the description in the foregoing embodiment, and details are not described herein again.

For a manner in which the terminal determines a channel quality corresponding to at least one downlink control channel, reference may be made to the description in the foregoing embodiment, and details are not described herein again. Optionally, for the manner in which the terminal obtains the channel quality corresponding to the downlink data channel, reference may be made to the manner in which the terminal determines the channel quality corresponding to at least one downlink control channel described in the foregoing embodiment. The difference is that when the terminal determines the channel quality corresponding to the downlink data channel, , The downlink data channel can be adaptively replaced with a downlink control channel.

S204. The terminal sends first indication information to the network device, where the first indication information is used to indicate at least one of a channel quality corresponding to at least one downlink control channel quality and a channel quality corresponding to a downlink data channel.

Specifically, for the sending manner of the first indication information, reference may be made to the description at S104 in the foregoing embodiment. The difference is that the channel quality indicated by the first indication information in S204 is the channel quality corresponding to at least one downlink control channel and the downlink data channel corresponding. At least one of the channel qualities. The channel quality indicated by the first indication information in S104 is the channel quality corresponding to at least one downlink control channel.

Exemplarily, the at least one channel quality may be a channel quality greater than a preset threshold among a channel quality corresponding to at least one downlink control channel and a channel quality corresponding to a downlink data channel. Alternatively, the at least one channel quality may be the highest channel quality among the channel quality corresponding to the at least one downlink control channel and the channel quality corresponding to the downlink data channel. Alternatively, the at least one channel quality may be at least one downlink control channel and all corresponding channel qualities in the downlink data channel.

Exemplarily, the terminal may determine the downlink channel quality of the downlink data channel according to the demodulation reference signal corresponding to the downlink data channel, and record it as CQI _PDSCH . The terminal may determine the downlink channel quality of at least one downlink control channel according to a demodulation reference signal (Demodulation Reference Signal, DMRS) corresponding to the at least one downlink control channel, and record them as CQI _PDCCH1 , CQI _PDCCH2, and CQI _PDCCH3 .

Exemplarily, when the at least one channel quality that the terminal needs to report is a channel quality corresponding to the at least one downlink control channel and the channel quality corresponding to the downlink data channel that is greater than a preset threshold, if the terminal determines CQI _PDCCH1 If the CQI _{PDSCH is} greater than a preset threshold, the terminal may determine that at least one channel quality includes CQI _PDCCH1 and CQI _PDSCH , that is, the terminal may use the first indication information to indicate the sizes of CQI _PDCCH1 and CQI _PDSCH .

The preset threshold is not limited in the embodiment of the present application, and may be set as required in an actual process. The preset threshold may be configured for the terminal by the network device, or may be pre-configured for the terminal, which is not limited in the embodiment of the present application.

Exemplarily, when the at least one channel quality that the terminal needs to report is the highest channel quality among the channel quality corresponding to the at least one downlink control channel and the channel quality corresponding to the downlink data channel, if CQI _{PDCCH1 is} greater than or equal to If CQI _PDCCH2 and CQI _{PDCCH1 are} greater than or equal to CQI _PDCCH3 and CQI _{PDCCH1 is} greater than or equal to CQI _PDSCH , the terminal may determine that at least one channel quality includes CQI _PDCCH1 .

Exemplarily, when the at least one channel quality that the terminal needs to report is the highest channel quality among the channel quality corresponding to the at least one downlink control channel and the channel quality corresponding to the downlink data channel, if the downlink monitored by the terminal When the number of control channels is one, the terminal may report the channel quality corresponding to the downlink control channel when determining that the channel quality corresponding to the downlink control channel is greater than (or equal to) the channel quality corresponding to the downlink data channel. Or when it is determined that the channel quality corresponding to the downlink data channel is greater than the channel quality corresponding to the downlink control channel, the channel quality corresponding to the downlink data channel is reported.

Exemplarily, when the terminal needs to report all channel qualities, at least one channel quality includes CQI _PDCCH1 , CQI _PDCCH2, and CQI _PDCCH3 . That is, the terminal uses the first indication information to indicate the sizes of CQI _PDCCH1 , CQI _PDCCH2, and CQI _PDCCH3 , respectively.

It should be noted that in the embodiment of the present application, when the terminal needs to report two or more channel qualities to the network device, it means that the terminal sends a set of two or more channel qualities to the network device. For example, the terminal needs to report CQI _PDCCH1 and CQI _PDCCH2 , which means that the terminal needs to report to the network device a set consisting of the channel quality corresponding to PDCCH1 and the channel quality corresponding to _PDCCH2 {CQI _PDCCH1 , CQI _PDCCH2 }.

S205. The network device receives the first instruction information sent by the terminal.

For a specific implementation manner of step S205, reference may be made to the description at step S105, and details are not described herein again.

S206. The network device determines at least one channel quality according to the first indication information.

Specifically, the first indication information is used to indicate a size of each channel quality in at least one channel quality.

Optionally, after step S206, the network device adjusts the transmission strategy of the downlink data channel according to at least one channel quality. For details, reference may be made to the description at S106 in the foregoing embodiment, and details are not described herein again.

Optionally, as another embodiment of the present application, as shown in FIG. 9, the method provided in the embodiment of the present application further includes:

S207. The terminal sends second instruction information to the network device, where the second instruction information is used to indicate at least one channel corresponding to channel quality.

The second indication information is specifically used to indicate a channel associated with each channel quality in at least one channel quality. That is, the quality of each channel is obtained according to the demodulation reference signal corresponding to which downlink control channel or the demodulation reference signal corresponding to which downlink data channel.

Exemplarily, if the terminal reports the size of the channel quality CQI _{PDCCH1 of PDCCH1} to the network device by using the first indication information, the second indication information is used to indicate that CQI _PDCCH1 is calculated according to the demodulation reference signal of PDCCH1.

Specifically, for a specific sending manner of the second indication information, reference may be made to the description at S107, which is not repeatedly described in the embodiment of the present application.

S208. The network device receives the second instruction information sent by the terminal.

Optionally, the method provided in the embodiment of the present application further includes: the network device adjusts the transmission strategy of the downlink data channel according to the first instruction information and / or the second instruction information. For a specific adjustment method, refer to the description in the foregoing embodiment. I will not repeat them here.

Optionally, after step S208, the method further includes: the network device determines a channel corresponding to each channel quality among at least one channel quality according to the second indication information. For example, if the second indication information indicates that the CQI _PDCCH1 is calculated according to the downlink control channel 1, the network device may determine that the channel corresponding to the CQI _PDCCH1 is the downlink control channel 1.

The above mainly introduces the solution of the embodiment of the present application from the perspective of interaction between various network elements. It can be understood that, in order to implement the above functions, each network element, such as a channel quality notification device and a channel quality receiving device, includes a hardware structure and / or a software module corresponding to each function. Those skilled in the art should easily realize that, with reference to the units and algorithm steps of the various examples described in the embodiments disclosed herein, this application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is performed by hardware or computer software-driven hardware depends on the specific application and design constraints of the technical solution. A professional technician can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

In the embodiment of the present application, the functional unit may be divided according to the channel quality notification device and the channel quality receiving device according to the foregoing method. For example, each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one process. Unit. The above integrated unit may be implemented in the form of hardware or in the form of software functional unit. It should be noted that the division of the units in the embodiments of the present application is schematic, and is only a logical function division. In actual implementation, there may be another division manner.

The following description is made by taking each functional module as an example:

In the case of using an integrated unit, FIG. 10 shows a possible structural diagram of a channel quality notification device involved in the foregoing embodiment. The channel quality notification device may be a terminal, or may be applied to a terminal. Chip. The channel quality notification device includes a receiving unit 201, a determining unit 202, and a sending unit 203.

Among them, in a possible implementation manner, the receiving unit 201 is configured to support a channel quality notification device to perform step S102 in the foregoing embodiment. The determining unit 202 is configured to support the channel quality notification device to perform step S103 in the foregoing embodiment. The sending unit 203 is configured to support the channel quality notification device to perform steps S104 and S107 in the foregoing embodiment. All relevant content of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module, and will not be repeated here.

As another possible implementation manner, the receiving unit 201 in the channel quality notification device shown in FIG. 10 is configured to execute S202. The determining unit 202 is configured to support the channel quality notification device to perform step S203 in the foregoing embodiment. The sending unit 203 is configured to support the channel quality notification device to perform steps S204 and S207 in the foregoing embodiment. All relevant content of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module, and will not be repeated here.

In the case of using an integrated unit, FIG. 11 shows a schematic diagram of a possible logical structure of the channel quality notification device involved in the foregoing embodiment. The channel quality notification device may be a terminal in the foregoing embodiment, or Chips used in terminals. The channel quality notification device includes a processing module 212 and a communication module 213. The processing module 212 is configured to control and manage the actions of the channel quality notification device. For example, the processing module 212 is configured to perform a message or data processing step on the channel quality notification device side, and the communication module 213 is configured to perform the process on the channel quality notification device Message or data processing steps.

For example, as a possible implementation manner, the processing module 212 is configured to support the channel quality notification device to execute S103 in the foregoing embodiment. The communication module 213 is configured to support the channel quality notification device to execute S102, S104, and S107 in the foregoing embodiment. And / or other processes performed by the channel quality notification device for the techniques described herein.

As another possible implementation manner, the processing module 212 is configured to support the channel quality notification device to execute S203 in the foregoing embodiment. The communication module 213 is configured to support the channel quality notification device to perform S202, S204, and S207 in the foregoing embodiment. And / or other processes performed by the channel quality notification device for the techniques described herein.

Optionally, the channel quality notification device may further include a storage module 211 for storing program code and data of the channel quality notification device.

The processing module 212 may be a processor or a controller, for example, it may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array, or other programmable logic devices, transistor logic devices, Hardware components or any combination thereof. It may implement or execute various exemplary logical blocks, modules, and circuits described in connection with the present disclosure. The processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and so on. The communication module 213 may be a transceiver, a transceiver circuit, or a communication interface. The storage module 211 may be a memory.

When the processing module 212 is the processor 220, the communication module 213 is the communication interface 230 or the transceiver, and the storage module 211 is the memory 240, the channel quality notification device involved in this application may be the device shown in FIG.

The communication interface 230, one or more (including two) processors 220, and the memory 240 are connected to each other through the bus 210. The bus 210 may be a PCI bus, an EISA bus, or the like. The bus 210 may be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only a thick line is used in FIG. 12, but it does not mean that there is only one bus or one type of bus. The memory 240 is configured to store program code and data of the channel quality notification device. The communication interface 230 is used for supporting the channel quality notification device to communicate with other devices (for example, the channel quality receiving device). The processor is configured to support the channel quality notification device to execute the program code and data stored in the memory 240, so as to control and manage the operation of the channel quality notification device.

For example, in a possible implementation manner, the communication interface 230 supports that the channel quality notification device executes S102, S104, and S107. The processor 220 is configured to support the channel quality notification device to execute the program code and data stored in the memory 240 to implement S103 provided in the present application.

As another possible implementation manner, the communication interface 230 supports the channel quality notification device to execute S202, S204, and S207. The processor 220 is configured to support the channel quality notification device to execute the program code and data stored in the memory 240 to implement S203 provided in the present application.

In the case of using an integrated unit, FIG. 13 shows a possible structural diagram of a channel quality receiving device involved in the foregoing embodiment. The channel quality receiving device may be a network device, or may be applied to a network device. Chip. The channel quality receiving apparatus includes a sending unit 301, a receiving unit 302, and a determining unit 303.

As a possible implementation manner, the sending unit 301 is configured to support a channel quality receiving device to perform step S101 in the foregoing embodiment. The receiving unit 302 is configured to support a channel quality receiving device to perform steps S105 and S108 in the foregoing embodiment. The determining unit 303 is configured to support the channel quality receiving device to perform step S106 in the foregoing embodiment.

As another possible implementation manner, the sending unit 301 is configured to support a channel quality receiving device to perform step S201 in the foregoing embodiment. The receiving unit 302 is configured to support a channel quality receiving device to perform steps S205 and S208 in the foregoing embodiment. The determining unit 303 is configured to support the channel quality receiving device to perform step S206 in the foregoing embodiment.

In the case of using an integrated unit, FIG. 14 shows a schematic diagram of a possible logical structure of the channel quality receiving device involved in the foregoing embodiment, and the channel quality receiving device may be a network device in the foregoing embodiment, or It is a chip used in network equipment. The channel quality receiving apparatus includes a processing module 312 and a communication module 313. The processing module 312 is configured to control and manage the actions of the channel quality receiving device, and the communication module 313 is configured to perform steps of performing message or data processing on the channel quality receiving device.

For example, in a possible implementation manner, the processing module 312 is configured to support the channel quality receiving device to execute S106. The communication module 313 is configured to support the channel quality receiving device to execute S101, S105, and S108 in the foregoing embodiment. And / or other processes performed by the channel quality receiving device for the techniques described herein.

In another possible implementation manner, the processing module 312 is configured to support the channel quality receiving device to execute S206. The communication module 313 is configured to support the channel quality receiving device to perform S201, S205, and S208 in the foregoing embodiment. And / or other processes performed by the channel quality receiving device for the techniques described herein.

Optionally, the channel quality receiving device may further include a storage module 311 for storing program code and data of the channel quality receiving device.

The processing module 312 may be a processor or a controller, for example, it may be a central processing unit, a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array, or other programmable logic devices, transistor logic devices, Hardware components or any combination thereof. It may implement or execute various exemplary logical blocks, modules, and circuits described in connection with the present disclosure. The processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and so on. The communication module 313 may be a transceiver, a transceiver circuit, or a communication interface. The storage module 311 may be a memory.

When the processing module 312 is the processor 320, the communication module 313 is the communication interface 330 or the transceiver, and the storage module 311 is the memory 340, the channel quality receiving device involved in this application may be the device shown in FIG. 15.

The communication interface 330, one or more (including two) processors 320, and the memory 340 are connected to each other through a bus 310. The bus 310 may be a PCI bus, an EISA bus, or the like. The bus 310 may be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is used in FIG. 15, but it does not mean that there is only one bus or one type of bus. The memory 340 is configured to store program code and data of the channel quality receiving device. The communication interface 330 is configured to support the channel quality receiving device to communicate with other equipment (for example, a terminal), and the processor 320 is configured to support the channel quality receiving device to execute the program code and data stored in the memory 340 to implement the channel quality receiving device side. Perform message / data control actions.

As a possible implementation manner, the processor 320 is configured to support a channel quality receiving device to execute S106 in the foregoing embodiment. The communication interface 330 is configured to support the channel quality receiving device to execute S101, S105, and S108 in the foregoing embodiment. And / or other processes performed by the channel quality receiving device for the techniques described herein.

As another possible implementation manner, the processor 320 is configured to support a channel quality receiving apparatus to execute S206 in the foregoing embodiment. The communication interface 330 is configured to support the channel quality receiving device to execute S201, S205, and S208 in the foregoing embodiment. And / or other processes performed by the channel quality receiving device for the techniques described herein.

FIG. 16 is a schematic structural diagram of a chip 150 according to an embodiment of the present invention. The chip 150 includes one or more (including two) processors 1510 and an interface circuit 1530.

Optionally, the chip 150 further includes a memory 1540. The memory 1540 may include a read-only memory and a random access memory, and provide operation instructions and data to the processor 1510. A part of the memory 1540 may further include a non-volatile random access memory (NVRAM).

In some implementations, the memory 1540 stores the following elements, executable modules or data structures, or their subsets, or their extended sets:

In the embodiment of the present invention, a corresponding operation is performed by calling an operation instruction stored in the memory 1540 (the operation instruction may be stored in an operating system).

A possible implementation manner is: the terminal and the network device have similar chip structures, and different devices may use different chips to implement their respective functions.

The processor 1510 controls operations of a terminal and a network device. The processor 1510 may also be referred to as a central processing unit (CPU). The memory 1540 may include a read-only memory and a random access memory, and provide instructions and data to the processor 1510. A part of the memory 1540 may further include a non-volatile random access memory (NVRAM). For example, in the application, the memory 1540, the interface circuit 1530, and the memory 1540 are coupled through a bus system 1520. The bus system 1520 may include a power bus, a control bus, and a status signal bus in addition to a data bus. However, for the sake of clarity, various buses are labeled as the bus system 1520 in FIG. 16.

The method disclosed in the foregoing embodiment of the present invention may be applied to the processor 1510, or implemented by the processor 1510. The processor 1510 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 1510 or an instruction in the form of software. The above-mentioned processor 1510 may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or Other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. Various methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or executed. A general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in combination with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or may be performed by using a combination of hardware and software modules in the decoding processor. A software module may be located in a mature storage medium such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, and the like. The storage medium is located in the memory 1540, and the processor 1510 reads the information in the memory 1540 and completes the steps of the foregoing method in combination with its hardware.

Optionally, the interface circuit 1530 is configured to perform the receiving and sending steps of the terminal and the network device in the embodiments shown in FIG. 6, FIG. 7, FIG. 8, and FIG. 9.

The processor 1510 is configured to execute the processing steps of the terminal and the network device in the embodiments shown in FIG. 6, FIG. 7, FIG. 8, and FIG. 9.

In the above embodiments, the instructions stored in the memory for execution by the processor may be implemented in the form of a computer program product. The computer program product may be written in the memory in advance, or may be downloaded and installed in the memory in the form of software.

A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions according to the embodiments of the present application are generated in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website site, computer, server, or data center via a wired (e.g., Coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) transmission to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that can be stored by a computer or a data storage device such as a server, a data center, and the like that includes one or more available mediums integrated. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).

In one aspect, a computer-readable storage medium is provided. The computer-readable storage medium stores instructions. When the instructions are executed, the terminal or a chip applied to the terminal executes S102, S103, S104, and S107 in the embodiment. And / or other processes performed by a terminal or a chip applied in a terminal for the techniques described herein.

On the other hand, a computer-readable storage medium is provided. The computer-readable storage medium stores instructions. When the instructions are executed, the terminal or a chip applied to the terminal executes S202, S203, S204, and S207 in the embodiment. . And / or other processes performed by a terminal or a chip applied in a terminal for the techniques described herein.

In another aspect, a computer-readable storage medium is provided. The computer-readable storage medium stores instructions. When the instructions are executed, a network device or a chip applied to the network device executes S101, S105, and S106 in the embodiment. . And S108. And / or other processes performed by a network device or a chip applied in a network device for the techniques described herein.

In another aspect, a computer-readable storage medium is provided. The computer-readable storage medium stores instructions. When the instructions are executed, a network device or a chip applied to the network device executes S201, S205, and S206 in the embodiment. . And S208. And / or other processes performed by a network device or a chip applied in a network device for the techniques described herein.

The foregoing readable storage medium may include: various media that can store program codes, such as a U disk, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk, or an optical disk.

In one aspect, a computer program product including instructions is provided. When the instructions are executed, the terminal or a chip applied to the terminal executes S102, S103, S104, and S107 in the embodiment when the instructions are executed. And / or other processes performed by a terminal or a chip applied in a terminal for the techniques described herein.

On the other hand, a computer program product including instructions is provided. When the instructions are executed, the terminal or a chip applied to the terminal executes S202, S203, S204, and S207 in the embodiment when the instructions are executed. And / or other processes performed by a terminal or a chip applied in a terminal for the techniques described herein.

On the other hand, a computer program product including instructions is provided. The computer program product stores instructions. When the instructions are executed, a network device or a chip applied to the network device executes S101, S105, and S106 in the embodiment. And S108. And / or other processes performed by a network device or a chip applied in a network device for the techniques described herein.

In another aspect, a computer program product including instructions is provided. The computer program product stores instructions. When the instructions are executed, a network device or a chip applied to the network device executes S201, S205, and S206 in the embodiment. And S208. And / or other processes performed by a network device or a chip applied in a network device for the techniques described herein.

In one aspect, a chip is provided. The chip is used in a terminal. The chip includes one or more (including two) processors and an interface circuit. The interface circuit and the one or more (including two) processors pass The lines are interconnected, and the processor is used to run instructions to execute S102, S103, S104, and S107 in the embodiment. And / or other terminal-performed processes for the techniques described herein.

In another aspect, a chip is provided. The chip is used in a terminal. The chip includes one or more processors (including two) and an interface circuit. The interface circuit and the one or more processors (including two) are provided. Through the line interconnection, the processor is used to execute instructions to execute S202, S203, S204, and S207 in the embodiment. And / or other terminal-performed processes for the techniques described herein.

In another aspect, a chip is provided for use in a network device. The chip includes one or more (including two) processors and interface circuits, and the interface circuit and the one or more (including two) processors The processors are interconnected through lines, and the processor is used to run instructions to execute S101, S105, and S106 in the embodiments. And S108. And / or other processes performed by network devices for the techniques described herein.

In another aspect, a chip is provided. The chip is used in a network device, and the chip includes one or more (including two) processors and interface circuits, and the interface circuit and the one or more (including two) processors The processors are interconnected through lines, and the processor is configured to execute instructions to execute S201, S205, and S206 in the embodiments. And S208. And / or other processes performed by network devices for the techniques described herein.

In addition, the present application also provides a communication system including a channel quality notification device shown in FIG. 10 to FIG. 12 and a channel quality reception device shown in FIG. 13 to FIG. 15.

An embodiment of the present application provides a communication system in which a terminal receives a downlink data channel sent by a network device. The terminal determines that the downlink data channel is not received correctly, and the terminal sends to the network device first indication information used to indicate a channel quality corresponding to at least one downlink control channel monitored by the terminal. When the network device performs downlink data retransmission, the downlink data channel transmission strategy can be adjusted according to the size of the channel quality corresponding to at least one downlink control channel received last time. For example, the transmission beam of the downlink data channel transmitted last time can be quickly identified. Quality, so as to quickly switch the transmission beam, accelerate the recovery of downlink data channel transmission, reduce data interruption delay, and is suitable for URLLC scenarios.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using a software program, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions according to the embodiments of the present application are generated in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website site, computer, server, or data center via a wired (for example, Coaxial cable, optical fiber, digital subscriber line (DSL), or wireless (such as infrared, wireless, microwave, etc.) for transmission to another website site, computer, server, or data center. A computer-readable storage medium may be any available media that can be accessed by a computer or a data storage device including one or more servers, data centers, and the like that can be integrated with the media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (solid state disk (SSD)), and the like.

Although the present application is described in conjunction with various embodiments, in the process of implementing the claimed application, those skilled in the art can understand and realize the disclosure by looking at the drawings, the disclosure, and the appended claims. Other variations of the embodiment. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. Certain measures are recited in mutually different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

Although the present application has been described in connection with specific features and embodiments thereof, it is apparent that various modifications and combinations can be made thereto without departing from the spirit and scope of the application. Accordingly, the specification and drawings are merely exemplary illustrations of the application as defined by the appended claims, and are deemed to have covered any and all modifications, changes, combinations, or equivalents that fall within the scope of the application. Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. In this way, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application is also intended to include these modifications and variations.

Claims

A channel quality notification method includes:

The terminal receives a downlink data channel sent by a network device;

When the terminal determines that the downlink data channel is not received correctly, the terminal sends first instruction information to the network device, where the first instruction information is used to indicate that the at least one downlink control channel monitored by the terminal corresponds to Channel quality.
The channel quality notification method according to claim 1, wherein the at least one downlink control channel is a downlink control channel that schedules the downlink data channel.
The channel quality notification method according to claim 1 or 2, wherein the method further comprises:

Sending, by the terminal, second indication information to the network device, where the second indication information is used to indicate the at least one downlink control channel.
A channel quality notification method includes:

The terminal receives a downlink data channel sent by a network device;

When the terminal determines that the downlink data channel is not received correctly, the terminal determines a channel quality corresponding to the downlink data channel and a channel quality corresponding to at least one downlink control channel monitored by the terminal;

The terminal sends first indication information to the network device, where the first indication information is used to indicate at least one of a channel quality corresponding to the channel quality of the at least one downlink control channel and a channel quality corresponding to the downlink data channel.
The channel quality notification method according to claim 4, wherein the at least one channel quality is greater than or equal to a channel quality corresponding to the at least one downlink control channel and a channel quality corresponding to the downlink data channel. The channel quality of the preset threshold is either the channel quality with the highest channel quality or the corresponding channel quality of the at least one downlink control channel and the downlink data channel.
The channel quality notification method according to claim 4 or 5, wherein the method further comprises:

The terminal sends second instruction information to the network device, where the second instruction information indicates a channel corresponding to the at least one channel quality.
The channel quality notification method according to any one of claims 4 to 6, wherein the at least one downlink control channel is a downlink control channel that schedules the downlink data channel.
A method for receiving channel quality, comprising:

The network device sends a downlink data channel to the terminal;

Receiving, by the network device, first indication information sent by the terminal, where the first indication information is used to indicate a channel quality corresponding to at least one downlink control channel monitored by the terminal;

The network device determines a channel quality corresponding to the at least one downlink control channel according to the first indication information.
The channel quality receiving method according to claim 8, wherein the at least one downlink control channel is a downlink control channel that schedules the downlink data channel.
The method for receiving channel quality according to claim 8 or 9, wherein the method further comprises:

Receiving, by the network device, second indication information sent by the terminal, where the second indication information indicates the at least one downlink control channel.
A method for receiving channel quality, comprising:

The network device sends a downlink data channel to the terminal;

Receiving, by the network device, first indication information sent by the terminal; wherein the first indication information is used to indicate at least one of a channel quality corresponding to at least one downlink control channel and a channel quality corresponding to the downlink data channel ;

Determining, by the network device, the at least one channel quality according to the first indication information.
The channel quality receiving method according to claim 11, wherein the at least one channel quality is greater than or equal to a channel quality corresponding to the at least one downlink control channel and a channel quality corresponding to the downlink data channel. The channel quality of the preset threshold is either the channel quality with the highest channel quality or the corresponding channel quality of the at least one downlink control channel and the downlink data channel.
The channel quality receiving method according to claim 11 or 12, wherein the at least one downlink control channel is a downlink control channel that schedules the downlink data channel.
The method for receiving channel quality according to any one of claims 11-13, wherein the method further comprises:

Receiving, by the network device, second indication information sent by the terminal, where the second indication information indicates a channel corresponding to the at least one channel quality.
A channel quality notification device, characterized in that the device is a terminal or a chip applied in the terminal, and the device includes:

A receiving unit, configured to receive a downlink data channel sent by a network device;

A sending unit, configured to send first indication information to the network device when it is determined that the downlink data channel is not received correctly, and the first indication information is used to instruct a channel corresponding to at least one downlink control channel monitored by the terminal; quality.
The channel quality notification device according to claim 15, wherein the at least one downlink control channel is a downlink control channel that schedules the downlink data channel.
The channel quality notification device according to claim 15 or 16, wherein the sending unit is further configured to send second instruction information to the network device, and the second instruction information is used to instruct the network device At least one downlink control channel.
A channel quality notification device, characterized in that the device is a terminal or a chip applied in the terminal, and the device includes:

A receiving unit, configured to receive a downlink data channel sent by a network device;

A determining unit, configured to determine a channel quality corresponding to the downlink data channel and a channel quality corresponding to at least one downlink control channel monitored by the terminal when it is determined that the downlink data channel is not received correctly;

A sending unit, configured to send first indication information to the network device, where the first indication information is used to indicate at least one of a channel quality corresponding to the at least one downlink control channel and a channel quality corresponding to the downlink data channel quality.
The channel quality notification device according to claim 18, wherein the at least one channel quality is greater than or equal to a channel quality corresponding to the at least one downlink control channel and a channel quality corresponding to the downlink data channel. The channel quality of the preset threshold is either the channel quality with the highest channel quality or the corresponding channel quality of the at least one downlink control channel and the downlink data channel.
The channel quality notification device according to claim 18 or 19, wherein the sending unit is further configured to send second instruction information to the network device, where the second instruction information indicates the at least one The channel corresponding to the channel quality.
The channel quality notification device according to any one of claims 18-20, wherein the at least one downlink control channel is a downlink control channel that schedules the downlink data channel.
A channel quality receiving device is characterized in that the device is a network device or a chip applied in a network device, and the device includes:

A sending unit, configured to send a downlink data channel to the terminal;

A receiving unit, configured to receive first indication information sent by the terminal, where the first indication information is used to indicate a channel quality corresponding to at least one downlink control channel monitored by the terminal;

A determining unit, configured to determine a channel quality corresponding to the at least one downlink control channel according to the first indication information.
The channel quality receiving device according to claim 22, wherein the at least one downlink control channel is a downlink control channel that schedules the downlink data channel.
The channel quality receiving device according to claim 22 or 23, wherein the receiving unit is further configured to receive second instruction information sent by the terminal, where the second instruction information indicates the at least one Downlink control channel.
A channel quality receiving device is characterized in that the device is a network device or a chip applied in a network device, and the device includes:

A sending unit, configured to send a downlink data channel to the terminal;

A receiving unit, configured to receive first indication information sent by the terminal; wherein the first indication information is used to indicate at least one of a channel quality corresponding to at least one downlink control channel and a channel quality corresponding to the downlink data channel quality;

A determining unit, configured to determine the at least one channel quality according to the first indication information.
The channel quality receiving device according to claim 25, wherein the at least one channel quality is greater than or equal to a channel quality corresponding to the at least one downlink control channel and a channel quality corresponding to the downlink data channel. The channel quality of the preset threshold is either the channel quality with the highest channel quality or the corresponding channel quality of the at least one downlink control channel and the downlink data channel.
The channel quality receiving device according to claim 25 or 26, wherein the at least one downlink control channel is a downlink control channel that schedules the downlink data channel.
The channel quality receiving device according to any one of claims 25-27, wherein the receiving unit is further configured to receive second instruction information sent by the terminal, where the second instruction information indicates The channel corresponding to at least one channel quality is described.
A chip, characterized in that the chip includes a processor and an interface circuit, the interface circuit is coupled to the processor, and the processor is configured to run a computer program or instruction to implement any one of claims 1 to 3 A channel quality notification method according to item 1, or a channel quality notification method according to any one of claims 4 to 7, or a channel quality notification method according to any one of claims 8 to 10. A quality receiving method, or a channel quality receiving method according to any one of claims 11 to 14, wherein the interface circuit is configured to communicate with a module other than the chip.