CN110719137B

CN110719137B - Channel quality notification method, receiving method and device

Info

Publication number: CN110719137B
Application number: CN201810770519.6A
Authority: CN
Inventors: 花梦; 周涵; 谢振山
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-07-13
Filing date: 2018-07-13
Publication date: 2021-10-15
Anticipated expiration: 2038-07-13
Also published as: WO2020011264A1; CN110719137A

Abstract

The embodiment of the application relates to the technical field of communication, in particular to a channel quality notification method, a channel quality receiving method and a channel quality notification device, which are used for reducing data interruption time delay. The scheme comprises the following steps: a terminal receives a downlink data channel sent by network equipment; and the terminal determines that the downlink data channel is not correctly received, and sends first indication information to the network equipment, wherein the first indication information is used for indicating the channel quality corresponding to at least one downlink control channel monitored by the terminal. The network device can adjust the downlink data channel transmission strategy according to the quality of the downlink channel received last time when performing downlink data retransmission, for example, the quality of the transmission beam of the downlink data channel transmitted last time can be quickly identified, so that the transmission beam is quickly switched, the recovery of downlink data channel transmission is accelerated, and the data interruption delay is reduced.

Description

Channel quality notification method, receiving method and device

Technical Field

The embodiment of the application relates to the technical field of communication, in particular to a channel quality notification method, a channel quality receiving method and a channel quality notification device.

Background

In contrast to Long Term Evolution (LTE) systems, 5th Generation (5G) cellular mobile communication systems are also called New Radio (NR) systems. NR systems employ higher carrier frequencies to achieve higher communication rates and capacities. Since the higher the carrier frequency, the greater the path loss of the wireless signal propagating in space, and the poorer the diffraction and diffraction capability of the wireless signal, and the susceptibility to rainfall or obstacle attenuation, the NR system employs the beamforming technology. The amplitude and phase values of the signals transmitted by the multiple antennas are weighted, so that the transmitted signals have different powers in different spatial directions, namely, beams with good directivity are formed, the signal-to-interference-and-noise ratio in the direction of a receiving end is improved, and the transmitted power in certain directions is suppressed to reduce interference. Similarly, the receiving end can also form a receiving beam through the beam forming technology, so that the receiving power in the direction of sending signals is improved, and the receiving power in the direction of interfering signals is reduced.

In the conventional technology, as shown in fig. 1, when a terminal, for example, a User Equipment (UE), demodulates a Physical Downlink Shared Channel (PDSCH) for carrying User data, the terminal feeds back a Negative-acknowledgement (NACK) to a base station (gbnodeb, gNB) according to a Hybrid Automatic Repeat Request (HARQ) process. The gNB attempts to adjust the PDSCH transmission strategy. For example: the Modulation and Coding Scheme (MCS) level (level) of the transmitted PDSCH, or the number of Physical Resource Blocks (PRBs) and the frequency domain position of the PDSCH, or the transmission beam (TX beam) of the transmitted PDSCH are adjusted, and then the PDSCH is retransmitted. The terminal attempts to receive and demodulate the retransmitted PDSCH, and feeds back an Acknowledgement (ACK) if the demodulation is successful. If the demodulation fails, feeding back NACK, and entering next PDSCH retransmission until the terminal successfully receives the data; or the maximum retransmission times is reached, and the corresponding HARQ processing flow is entered.

However, when the terminal feeds back NACK to the base station, since the current PDSCH TX beam quality is not provided, there may be the following problems: in order to maintain the Ultra-high reliability and the high reliability of the Ultra-Low delay Communication (URLLC) service, the gNB may only adjust the PDSCH transmission strategy according to a preset rule, and only adjust within a small range, and cannot adapt to the current link quality quickly. In addition, the gbb may not find the PDSCH TX beam problem in time, which causes the TX beam to be switched after finding the poor quality of the TX beam after multiple blind retransmissions, resulting in a larger data interruption delay.

Disclosure of Invention

The embodiment of the application provides a channel quality notification method, a receiving method and a device, which are used for reducing data interruption time delay.

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

The embodiment of the application provides a channel quality notification method, and a terminal receives a downlink data channel sent by network equipment. The terminal determines that the downlink data channel is not correctly received, and sends first indication information for indicating the channel quality corresponding to at least one downlink control channel monitored by the terminal to the network equipment. When the network device executes downlink data retransmission, the downlink data channel transmission strategy can be adjusted according to the channel quality corresponding to the at least one downlink control channel received last time, for example, the quality of the transmission beam of the downlink data channel transmitted last time can be quickly identified, so that the transmission beam is quickly switched, the recovery of downlink data channel transmission is accelerated, the data interruption time delay is reduced, and the method is suitable for URLLC (universal resource reservation control) scenes.

In a possible implementation manner, a terminal sends first indication information to a network device through an uplink control channel, and the method provided in an embodiment of the present application further includes: the terminal determines that the network equipment allocates the time-frequency resource required by the uplink control channel to the terminal through the downlink control channel, so that the terminal can send the first indication information to the network equipment through the uplink control channel on the allocated time-frequency resource. The network device is facilitated 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: and the terminal determines the channel quality corresponding to at least one downlink control channel according to the demodulation reference signal corresponding to at least one downlink control channel. The terminal reports the channel quality corresponding to at least one downlink control channel to the network equipment, so that the network equipment can adjust the transmission strategy of the downlink data channel in time.

In a possible implementation manner, a terminal determines, according to a demodulation reference signal corresponding to at least one downlink control channel, channel quality corresponding to the at least one downlink control channel, including: the terminal calculates and obtains physical Layer (Layer 1) -Reference Signal received Power (L1-RSRP) according to the demodulation Reference Signal corresponding to at least one downlink control channel. And the terminal calculates the Signal to Interference plus Noise Ratio (SINR) according to the L1-RSRP. And the terminal obtains the 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 the at least one downlink control channel to be monitored by the terminal is relatively large, and the demodulation reference signal corresponding to the at least one downlink control channel has two frequency domain distribution types, namely a narrow band and a wide band, the frequency domain distribution type of the demodulation reference signal corresponding to the at least one downlink control channel needs to be determined, and the terminal can accurately calculate the channel quality corresponding to the 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 determines that in the narrowband case: the demodulation reference signal corresponding to the downlink control channel is sent on the candidate time frequency resource of the downlink control channel which is required to be detected by the terminal in a blind mode, and the terminal determines the downlink channel quality of at least one downlink control channel according to the demodulation reference signal corresponding to 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 the broadband case: the demodulation reference signal corresponding to at least one downlink Control channel is sent on all Resource Element Groups (REGs) included in continuous Resource Blocks (RBs) of a Control-Resource Set (CORESET, core) of the downlink Control channel that the terminal needs to blind detect, and the terminal determines the channel quality corresponding to at least one downlink Control channel according to the demodulation reference signal corresponding to at least one downlink Control channel on all REGs.

In a possible implementation manner, the method provided in the embodiment of the present application further includes: and the terminal sends second indication information to the network equipment, wherein the second indication information is used for indicating at least one downlink control channel. The network device can determine the channel quality corresponding to the at least one downlink control channel according to which downlink control channel/downlink control channels are/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 determining, by the terminal, that the downlink data channel is not correctly received includes any one of: the terminal determines that the downlink is out of step (for example, the downlink timing of the terminal and the network device is out of step, which results in that the terminal cannot correctly receive the downlink data channel); channel quality degradation (e.g., doppler shift spread) caused by an increase in the moving speed of the terminal; the beam forming vector/pre-coding matrix/codebook of the downlink data channel is not matched with the downlink channel; downlink Control Information (DCI) demodulation error; a Transmission Configuration Indicator state (TCI states) of at least one downlink control channel indicates that RRC Configuration and MAC-CE activation have been completed, and TCI states of a downlink data channel do not yet complete MAC-CE activation; the terminal cannot correctly receive downlink data after random access (for example, after initial access, RRC connection reestablishment, and cell handover); the terminal cannot correctly receive the downlink data after beam failure recovery (beam failure recovery). The terminal cannot correctly receive downlink data (e.g., Timing Advance Timing offset) after the ON period of (Connected) Discontinuous Reception (C) DRX) arrives.

In a second aspect, an embodiment of the present application provides a channel quality notification method, including: and the terminal receives a downlink data channel sent by the network equipment. The terminal determines that the downlink data channel is not correctly received, 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 equipment, wherein the first indication information is used for indicating at least one channel quality in the channel quality corresponding to at least one downlink control channel and the channel quality corresponding to the downlink data channel.

The embodiment of the application provides a channel quality notification method, and a terminal receives a downlink data channel sent by network equipment. The terminal determines that the downlink data channel is not correctly received, 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 first indication information for indicating the at least one channel quality to the network equipment. When the network device executes downlink data retransmission, the network device may adjust the downlink data channel transmission strategy according to at least one of the channel quality size corresponding to the at least one downlink control channel and the channel quality size corresponding to the downlink data channel received last time, for example, may quickly identify the quality of the transmission beam of the downlink data channel transmitted last time, thereby quickly switching the transmission beam, accelerating recovery of downlink data channel transmission, reducing data interruption delay, and being suitable for a URLLC scenario.

In a possible implementation manner, the method provided in the embodiment of the present application further includes: and the terminal sends second indication information used for indicating a channel corresponding to at least one channel quality to the network equipment. The method and the device facilitate the network equipment to determine that the channel quality is obtained according to the demodulation reference signal corresponding to the downlink control channel and/or the demodulation reference signal corresponding to the downlink data channel when receiving the channel quality, thereby effectively adjusting the transmission strategy of the downlink data channel.

In one possible implementation, the at least one downlink control channel is a downlink control channel for scheduling a downlink data channel.

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

The method for determining that the downlink data channel is not correctly received by the corresponding terminal may refer to the description in the first aspect, and is not described herein again.

The manner in which the corresponding terminal sends the first indication information may refer to the description in the first aspect, and is not described herein again.

The method for determining the demodulation reference signal corresponding to the downlink control channel by the corresponding terminal under the narrowband condition and the broadband condition may refer to the description in the first aspect, and is not described herein again.

The method for determining the channel quality corresponding to the at least one downlink control channel by the corresponding terminal may refer to the description in the first aspect, and is 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 may also refer to the manner in which the terminal determines the channel quality corresponding to at least one downlink control channel, and only when the downlink data channel determines the channel quality corresponding to the downlink data channel, the demodulation reference signal corresponding to the downlink data channel is used.

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

In a possible implementation manner, the method provided in the embodiment of the present application further includes: and the network equipment receives second indication information sent by the terminal, wherein the second indication 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 an uplink control channel allocated to the terminal.

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

In a fourth aspect, an embodiment of the present application provides a channel quality receiving method, including: the network equipment sends a downlink data channel to the terminal. The network equipment receives first indication information sent by the terminal. The first indication information is used for indicating at least one channel quality in channel quality corresponding to at least one downlink control channel and 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: and the network equipment receives second indication information which is sent by the terminal and indicates a channel corresponding to at least one channel quality.

In a fifth aspect, the present application provides a channel quality notification apparatus, which may implement the method in the first aspect or any possible implementation manner of the first aspect, and therefore may also achieve the beneficial effects in the first aspect or any possible implementation manner of the first aspect. The channel quality notification apparatus may be a terminal, or may also be an apparatus that can support the terminal to implement the method in the first aspect or any possible implementation manner of the first aspect, for example, a chip applied in the terminal. The channel quality notification apparatus may implement the above method by software, hardware, or by executing corresponding software by hardware.

The channel quality notification device includes: and the receiving unit is used for receiving the downlink data channel sent by the network equipment. And the determining unit is used for determining that the downlink data channel is not correctly received and determining the channel quality corresponding to at least one downlink control channel monitored by the terminal. A sending unit, configured to determine, at the determining unit, that the downlink data channel is not correctly received, and send, to the network device, first indication information for indicating 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 one possible implementation, at least one downlink control channel is a downlink control channel for scheduling the downlink data channel.

For various possible implementation manners of the channel quality notification apparatus provided in the fifth aspect, reference may be made to descriptions in the various possible implementation manners of the first aspect, and details are not repeated here.

In one possible implementation manner, an embodiment of the present application further provides a channel quality notification apparatus, where the channel quality notification apparatus may be a terminal or a chip applied in the terminal, and the channel quality notification apparatus includes: a processor and a communication interface, wherein the communication interface is configured to support the channel quality notification apparatus to perform the steps of receiving and sending messages/data at the side of the channel quality notification apparatus described in any one of the possible implementations of the first aspect to the first aspect. The processor is configured to support the channel quality notification apparatus to perform the steps of message/data processing at the side of the channel quality notification apparatus described in any one of the possible implementation manners of the first aspect to the first aspect. For specific corresponding steps, reference may be made to descriptions in any one of possible implementation manners of the first aspect to the first aspect, which are not described herein again.

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

Optionally, the channel quality notification apparatus may further comprise 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 apparatus, which may implement the method in the second aspect or any possible implementation manner of the second aspect, and therefore may also achieve the beneficial effects in the second aspect or any possible implementation manner of the second aspect. The channel quality notification apparatus may be a terminal, or may be an apparatus that can support the terminal to implement the method in the second aspect or any possible implementation manner of the second aspect, for example, a chip applied in the terminal. The channel quality notification apparatus may implement the above method by software, hardware, or by executing corresponding software by hardware.

A channel quality notification apparatus comprising: and the receiving unit is used for receiving the downlink data channel sent by the network equipment. And the determining unit is used for determining that the downlink data channel is not correctly received, and determining the channel quality corresponding to at least one downlink control channel and the channel quality corresponding to the downlink data channel monitored by the terminal. A sending unit, configured to determine, at the determining unit, that the downlink data channel is not correctly received, and send first indication information to the network device, where the first indication information is 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.

In a possible implementation manner, the at least one channel quality is a channel quality greater than or equal to a preset threshold, from among the channel quality corresponding to the at least one downlink control channel and the channel quality corresponding to the downlink data channel, or is a channel quality with a highest channel quality, or is all channel qualities 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: and the terminal sends second indication information indicating a channel corresponding to the at least one channel quality to the network equipment.

For various other possible implementations of the sixth aspect, reference may be made to various possible implementations of the second aspect, which are not described herein again.

In one possible implementation manner, an embodiment of the present application further provides a channel quality notification apparatus, where the channel quality notification apparatus may be a terminal or a chip applied in the terminal, and the channel quality notification apparatus includes: a processor and a communication interface, wherein the communication interface is configured to support the channel quality notification apparatus to perform the steps of receiving and transmitting messages/data at the side of the channel quality notification apparatus described in any one of the possible implementations of the second aspect to the second aspect. The processor is configured to support the channel quality notification apparatus to perform the steps of message/data processing at the side of the channel quality notification apparatus described in any one of the possible implementations of the second aspect to the second aspect. For specific corresponding steps, reference may be made to descriptions in any one of possible implementation manners of the second aspect to the second aspect, and details are not repeated here.

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

A channel quality receiving apparatus comprising: and the sending unit is used for sending the downlink data channel to the terminal. The receiving unit is configured to receive first indication information, which is 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 channel quality corresponding to at least one downlink control channel.

In a possible implementation manner, the sending unit is further configured to allocate, to the terminal, a time-frequency resource required by an uplink control channel through the downlink control channel, where 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 by an uplink control channel allocated to the terminal.

For various possible implementations of a channel quality receiving apparatus provided in the seventh aspect, reference may be made to descriptions in the various possible implementations of the third aspect, and details are not repeated here.

A possible implementation manner is also provided in an embodiment of the present application, where the channel quality receiving apparatus may be a network device or a chip applied in the network device, and the channel quality receiving apparatus includes: a processor and a communication interface, wherein the communication interface is configured to support the channel quality receiving apparatus to perform the steps of receiving and transmitting messages/data on the channel quality receiving apparatus side described in any one of the possible implementations of the third aspect to the third aspect. The processor is configured to support the channel quality receiving apparatus to perform the step 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 descriptions in any one of possible implementation manners of the third aspect to the third aspect, which is not described herein again.

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

Optionally, the channel quality receiving apparatus may further comprise 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, embodiments of the present application provide a channel quality receiving apparatus, which may implement the method in the fourth aspect or any possible implementation manner of the fourth aspect, and therefore can also achieve the beneficial effects in the fourth aspect or any possible implementation manner of the fourth aspect. The channel quality receiving apparatus may be a network device, or may also be an apparatus that can support the network device to implement the method in the fourth aspect or any possible implementation manner of the fourth aspect, for example, a chip applied in the network device. The channel quality receiving apparatus may implement the above method by software, hardware, or by executing corresponding software by hardware.

A channel quality receiving apparatus comprising: and the sending unit is used for sending the downlink data channel to the terminal. A receiving unit, configured to receive first indication information, which is sent by a 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 indication 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 a channel corresponding to at least one channel quality.

In a possible implementation manner, the sending unit is further configured to allocate, to the terminal, a time-frequency resource required by an uplink control channel 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.

A possible implementation manner is also provided in an embodiment of the present application, where the channel quality receiving apparatus may be a network device or a chip applied in the network device, and the channel quality receiving apparatus includes: a processor and a communication interface, wherein the communication interface is configured to support the channel quality receiving apparatus to perform the steps of receiving and transmitting messages/data on the channel quality receiving apparatus side described in any one of the possible implementations of the fourth aspect to the fourth aspect. The processor is configured to support the channel quality receiving apparatus to perform the steps of message/data processing on the side of the channel quality receiving apparatus 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 descriptions in any one of 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 having stored therein instructions that, when executed on a computer, cause the computer to perform a method of channel quality notification as described in the first aspect or in various possible implementations of the first aspect.

In a tenth aspect, the present application provides a computer-readable storage medium having stored therein instructions that, when executed on a computer, cause the computer to perform a channel quality notification method as described in the second aspect or in various possible implementations of the second aspect.

In an eleventh aspect, the present application provides a computer-readable storage medium having stored therein instructions that, when executed on a computer, cause the computer to perform a channel quality reception method as described in the third aspect or in various possible implementations of the third aspect.

In a twelfth aspect, the present application provides a computer-readable storage medium having stored therein instructions that, when executed on a computer, cause the computer to perform a channel quality receiving method as described in the fourth aspect or in various possible implementations of the fourth aspect.

In a thirteenth aspect, the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform a method of channel quality notification as described in the first aspect or in various possible implementations of the first aspect.

In a fourteenth aspect, the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of channel quality notification described in the second aspect or in various possible implementations of the second aspect.

In a fifteenth aspect, the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform a channel quality receiving method as described in the third aspect or in various possible implementations of the third aspect.

In a sixteenth aspect, the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform a channel quality receiving method as described in the fourth aspect or in various possible implementations of the fourth aspect.

In a seventeenth aspect, embodiments of the present application provide a chip, where the chip includes a processor and an interface circuit, where the interface circuit is coupled to the processor, and the processor is configured to execute a computer program or instructions to implement the first aspect or one of the channel quality notification methods described in the various possible implementations of the first aspect.

In an eighteenth aspect, embodiments of the present application provide a chip comprising a processor and an interface circuit, the interface circuit being coupled to the processor, and the processor being configured to execute a computer program or instructions to implement one of the channel quality notification methods described in the second aspect or various possible implementations of the second aspect.

In a nineteenth aspect, embodiments of the present application provide a chip, where the chip includes a processor and an interface circuit, the interface circuit is coupled to the processor, and the processor is configured to execute a computer program or instructions to implement the third aspect or one of the channel quality receiving methods described in the various possible implementations of the third aspect.

In a twentieth aspect, embodiments of the present application provide a chip comprising a processor and an interface circuit, the interface circuit being coupled to the processor, and the processor being configured to execute a computer program or instructions to implement a channel quality receiving method as described in the fourth aspect or in various possible implementations of the fourth aspect.

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

In a twenty-second aspect, the present application provides a communication system, which includes the channel quality notification apparatus described in the sixth aspect or in various possible implementations of the sixth aspect, and the channel quality receiving apparatus described in the eighth aspect or in various possible implementations of the eighth aspect.

Drawings

Fig. 1 is a schematic diagram of reporting channel quality according to the prior art;

fig. 2 is a schematic diagram of an architecture 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 disclosure;

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

fig. 5 is a schematic beam diagram provided in an embodiment of the present application;

fig. 6 is a first schematic flow chart illustrating downlink channel quality notification/reception according to an embodiment of the present disclosure;

fig. 7 is a second flowchart illustrating a downlink channel quality notification/reception according to an embodiment of the present application;

fig. 8 is a first schematic flow chart of another downlink channel quality notification/reception provided in the embodiment of the present application;

fig. 9 is a second schematic flow chart of downlink channel quality notification/reception according to an embodiment of the present application;

fig. 10 is a first schematic structural diagram of a channel quality notification apparatus according to an embodiment of the present disclosure;

fig. 11 is a schematic structural diagram of a channel quality notification apparatus according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of a channel quality notification apparatus according to an embodiment of the present application;

fig. 13 is a first schematic structural diagram of a channel quality receiving apparatus according to an embodiment of the present disclosure;

fig. 14 is a schematic structural diagram of a channel quality receiving apparatus according to an embodiment of the present application;

fig. 15 is a schematic structural diagram of a channel quality receiving apparatus according to an embodiment of the present application;

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

Detailed Description

It is noted that, in the present application, words such as "exemplary" or "for example" are used to mean exemplary, illustrative, or descriptive. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

In the present application, "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple.

The terms "first", "second", and the like in the embodiments of the present application distinguish the same items or similar items having substantially the same functions and actions, and do not limit the order thereof. For example, the first indication information and the second indication information are only used for distinguishing different indication information, and the sequence order of the indication information is not limited. Those skilled in the art will appreciate that the words "first", "second", etc. do not necessarily differ.

The communication system and the service scenario described in the embodiment of the present application are for more clearly illustrating the technical solution of the embodiment of the present application, and do not constitute a limitation on the technical solution provided in the embodiment of the present application. As can be known to those skilled in the art, with the evolution of network architecture and the emergence of new service scenarios, the technical solution provided in the embodiments of the present application is 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 explanation.

It should be noted that the method provided in the embodiment of the present application may also be applied to other networks, for example, an Evolved Packet System (EPS) network (i.e., a so-called fourth Generation (4G) network, or an LTE network).

In this embodiment, the network device may be a wireless access device, for example, in an NR system, the network device may be a next generation base station (gNB), and in an LTE system, the network device may be an evolved node b (eNB). The radio access network device may be an access device for a terminal to wirelessly access into a mobile communication system. The radio Access network device may be an Access Point (AP) in a WLAN, an evolved Node B (eNB) or an eNodeB in Long Term Evolution (LTE), or a base station in NR (Next Generation Node B, gNB)). The radio access network device may also be a wireless backhaul device, a vehicle-mounted device, a wearable device, and a network device in a future 5G network or a network device in a future evolved PLMN network, etc.

Fig. 2 is a schematic diagram illustrating an architecture of a communication system provided by an embodiment of the present application, and as shown in fig. 2, the communication system includes one or more terminals 100, and the one or more terminals 100 access a wireless network to obtain services of the internet through the wireless network or communicate with other terminals through the wireless network. The wireless Network includes a Radio Access Network (RAN) 110. Where RAN110 is used to access one or more terminals 100 to a wireless network. RAN110 may include radio access network equipment.

The terminal is connected with the wireless access network equipment in a wireless mode and can be accessed into the core network through the wireless access network equipment. One or more of the terminals 100 may be fixed or mobile. Fig. 2 is a schematic diagram, and other network devices, such as a wireless relay device and a wireless backhaul device, may also be included in the communication system, which is not shown in fig. 2. The embodiment of the present application does not limit the number of the radio access network devices and the terminals included in the communication system.

The future Access Network can be realized by adopting a Cloud Radio Access Network (C-RAN) architecture. One possible way is to split the protocol stack architecture and functionality of a legacy base station into two parts: one part is called a Central Unit (CU) and the other part is called a Distributed Unit (DU). And the actual deployment mode of the CU and the DU is flexible. For example, the CU parts of a plurality of base stations are integrated together to form a larger functional network element. Fig. 3 is a schematic diagram of a network architecture according to an embodiment of the present application. As shown in fig. 3, the network architecture includes a CN device and a RAN device, wherein 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 may be implemented by one node or may be implemented by a plurality of nodes. The RAN device is configured to implement functions of Protocol layers such as Radio Resource Control (RRC), Packet Data Convergence Protocol (PDCP), Radio Link Control (RLC), and Medium Access Control (MAC). As shown in fig. 3, the CU and the DU may be divided according to protocol layers of the wireless network, for example, functions of a packet data convergence layer protocol layer and above protocol layers are provided in the CU, protocol layers below the PDCP, functions including RLC and MAC layers, and the like are provided in the DU.

This kind of protocol layer division is only an example, and it is also possible to divide at other protocol layers, for example, at the RLC layer, the functions of the RLC layer and the above protocol layers are set in the CU, and the functions of the protocol layers below the RLC layer are set in the DU; alternatively, the functions are divided into some protocol layers, for example, a part of the functions of the RLC layer and the functions of the protocol layers above the RLC layer are provided in the CU, and the remaining functions of the RLC layer and the functions of the protocol layers below the RLC layer are provided in the DU. In addition, the processing time may be divided in other manners, for example, by time delay, a function that needs to satisfy the time delay requirement for processing is provided in the DU, and a function that does not need to satisfy the time delay requirement is provided in the CU.

In addition, please refer to fig. 3, as opposed to the architecture shown in fig. 4, the Control Plane (CP) and the User Plane (UP) of the CU can be separated and implemented by being divided into different network elements, which are respectively a Control Plane CU network element (CU-CP network element) and a User Plane CU network element (CU-UP network element).

In the above network architecture, data generated by a CU may be transmitted to a terminal through a DU, or data generated by a terminal may be transmitted to a CU through a DU. The DU may not parse the data and directly encapsulate the data through a protocol layer and transmit the encapsulated data to the terminal or CU. For example, signaling of the RRC or PDCP Layer is finally processed into data of a Physical Layer (PHY) to be transmitted to the terminal, or converted from received data of the PHY Layer.

In the above embodiment, the CU serves as an access network device in the RAN, and in addition, the CU may also be divided into access network devices in the CN, which is not limited herein.

The apparatus in the following embodiments of the present application may be located in a terminal or a radio access network device according to the implemented functions. When the above structure of CU-DU 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 (terminal) is a device that provides voice and/or data connectivity to a user, e.g., a handheld device, a vehicle-mounted device, etc., with wireless connectivity. A Terminal may also be referred to as a User Equipment (UE), an Access Terminal (Access Terminal), a subscriber Unit (User Unit), a subscriber Station (User Station), a Mobile Station (Mobile Station), a Remote Station (Remote Station), a Remote Terminal (Remote Terminal), a Mobile device (Mobile Equipment), a User Terminal (User Terminal), a Wireless communication device (Wireless Terminal Equipment), a User Agent (User Agent), User Equipment (User Equipment), or a User device. The terminal may be a Station (STA) in a Wireless Local Area Network (WLAN), and may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) Station, a Personal Digital Assistant (PDA) device, a handheld device with Wireless communication function, a computing device or other processing device connected to a Wireless modem, a vehicle-mounted device, a wearable device, and a terminal in a next Generation communication system (e.g., a Fifth-Generation (5G) communication Network) or a terminal in a future-evolution Public Land Mobile Network (PLMN) Network, and the like. Among them, 5G may also be referred to as New Radio (NR).

As an example, in the embodiment of the present application, the terminal may also be a wearable device. Wearable equipment can also be called wearable intelligent equipment, is the general term of applying wearable technique to carry out intelligent design, develop the equipment that can dress to daily wearing, like glasses, gloves, wrist-watch, dress and shoes etc.. A wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. The generalized wearable smart device includes full functionality, large size, and can implement full or partial functionality without relying on a smart phone, such as: smart watches or smart glasses and the like, and only focus on a certain type of application functions, and need to be used in cooperation with other devices such as smart phones, such as various smart bracelets for physical sign monitoring, smart jewelry and the like.

The Beam (Beam) is the main lobe of the radiation pattern of the antenna array and is identified by one reference signal. The reference signals used to identify the beams may be: for example, Channel State Information-Reference Signal (CSI-RS). Or a Synchronization Signal Block (SS Block, SSB), or other reference Signal. One beam ID may be identified by identification information (e.g., ID) of one reference signal.

Before introducing the present application, the beam management procedure is first introduced:

the NR protocol specifies the relevant beam management procedures: and a beam measuring, reporting and scanning mechanism is used for finishing uplink beam management/downlink beam management. The downlink Beam management determines a transmission Beam of the network device and a reception Beam (RX Beam) of the terminal, that is, a downlink Beam Pair Link (DL Beam Pair Link, DL BPL). The uplink Beam management determines a transmission Beam of the terminal and a reception Beam of the gNB, i.e., an uplink Beam Pair Link (UL BPL). For example, the P-1, P-2, and P-3 procedures of downlink beam management:

p-1 process: a terminal sends receiving points and the front ends of transmitting and receiving antennas of a base station by measuring different TRPs (Transmit/Receive Point), one base station can have a plurality of front ends of transmitting and receiving antennas, only can send or Receive wireless signals and does not have the capability of processing baseband data) or becomes a transmission beam, and beam forming at the TRP side is supported, including TRP internal/cross-TRP transmitting beam scanning; and meanwhile, the beamforming at the terminal side, namely the terminal receiving beam scanning, is supported.

P-2 process: the terminal adjusts a transmission beam within/across the TRP by measuring a transmission beam of a different TRP.

P-3 process: the terminal adjusts different receive beams by measuring the same transmit beam.

Through the first P-1 process, the second P-2 process and the second P-3 process; or P-1 is performed first, and then P-2 process and P-3 process are performed simultaneously, the terminal determines a transmitting beam of the network device and a receiving beam (downlink beam pair link) of the terminal, so that there is better received signal gain in the transmitting direction and the receiving direction.

After the terminal accesses the network, a downlink beam pair link is formed through the beam management process. Since the traffic requirements of the control channel and the data channel are different, for example: data rate, signal coverage, etc. The gNB may send a Physical Downlink Control Channel (PDCCH) to the terminal through a wide TX beam (wide TX beam) to distribute the power of the transmitted signal in a wider spatial range, so that more terminals can receive the Control signal, thereby improving the coverage. The physical downlink control channel is used for carrying scheduling information and other control information.

As shown in fig. 5, the network device may form multiple transmit beams or receive beams by using a beamforming technique (such as digital beamforming or analog beamforming), the coverage angle of each beam may be the same or different, and there may be overlapping portions between beams with different coverage angles. For example, the network device may transmit control information using a transmission beam having a wide coverage angle and transmit data information using a transmission beam having a narrow coverage angle. The terminal may receive control information or data information transmitted by the network device within the coverage of one or more of the receive beams or the set or group of receive beams.

The terminal may also form a plurality of receiving beams by using beamforming technology, and determine to use one or more receiving beams for receiving according to the downlink transmission beam used by the network device. For convenience of description, the beams referred to in the embodiments of the present application may refer to a single or a plurality of beams.

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

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 the corresponding reception beam. At this time, the beam 3 and the beam 6 form a pair of BPLs. When a beam of a network device or a terminal conforms to a beam reciprocity (beam reciprocity) characteristic, a corresponding receive beam or transmit beam may be determined from the transmit beam or receive beam.

The beam (beam) in the embodiment of the present application may be understood as a spatial resource, and may refer to a transmission or reception precoding vector having energy transmission directivity. The transmit or receive precoding vector may be identified by index information. On one hand, the energy transmission directivity may mean that, in a certain spatial position, a signal subjected to precoding processing by the precoding vector has a better received power, such as meeting a receiving demodulation signal-to-noise ratio. On the other hand, the energy transmission directivity may also mean that the same signal transmitted from different spatial positions received through the precoding vector has different reception powers.

In a 5G URLLC service scenario, in order to improve a communication rate with a terminal in a certain direction, the gNB may concentrate transmission power in the direction, form a narrow transmit beam (narrow TX beam) to transmit a Physical Downlink Shared Channel (PDSCH) carrying user data to the terminal, and improve a received signal gain so as to apply a higher MCS level. The two downlink beam pairs formed for control and data (DL beam pair links) are independent.

When the terminal moves, rotates, or the narrow TX beam transmitting the PDSCH is suddenly blocked by an obstacle, it may cause the received signal gain of the terminal to decrease, thereby causing PDSCH data demodulation errors. And the wide TX beam for sending the PDCCH still works normally, and the terminal can still receive the PDCCH normally. Therefore, in the prior art, the terminal only feeds back NACK to the network device may cause the network device to adjust the transmission strategy of the PDSCH within a small range, cannot adapt to the current link quality quickly, and cannot find the PDSCH TX beam problem in time. Based on this, the channel quality reporting method provided in the present application reports, when it is determined that the downlink data channel is incorrectly received, the channel quality corresponding to at least one downlink control channel monitored by the terminal to the network device, or reports the channel quality corresponding to the at least one downlink control channel and the channel quality corresponding to the downlink data channel, or reports the channel quality corresponding to the at least one downlink control channel and the channel quality greater than or equal to the preset threshold in the downlink data channel, or reports the highest channel quality in the channel quality corresponding to the at least one downlink control channel and the channel quality corresponding to the downlink data channel, because the downlink channel quality is physically the channel quality of the air interface channel where the TX beam is located. Therefore, the network equipment can acquire the TX beam quality information in time and assist the network equipment to adjust the transmission strategy of the downlink data channel in time.

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

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

s101, a network device (e.g., a base station) sends a downlink data channel to a terminal.

For example, the Downlink data Channel in the embodiment of the present application may be a Physical Downlink Shared Channel (PDSCH).

It can be understood that, in this embodiment of the present application, the sending, by the network device, the downlink data channel to the terminal may refer to: the network device sends a demodulation reference signal (e.g., 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 equipment sends at least one downlink control channel to the terminal. The at least one downlink control channel is used for scheduling a downlink data channel. The Downlink Control channel carries Downlink Control Information (DCI), and the DCI is used to indicate an initial transmission policy of the PDSCH. For example: the initial transmission strategy of the PDSCH may be a transmission beam (TX beam) of the PDSCH, the number of Physical Resource Blocks (PRBs), the frequency domain position of the PRBs, the MCS level, information of an Uplink Control Channel (e.g., Physical Uplink Control Channel (PUCCH)) used by the terminal to report NACK/CQI, and time-frequency resources occupied by the Uplink Control Channel.

Illustratively, the time frequency resources allocated by the network device for the terminal have time frequency resource 1, time frequency resource 2 and time frequency resource 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, i.e. 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, i.e. the time frequency resource required by the uplink control channel 3 is the time frequency resource 3.

The network device sending at least one downlink control channel to the terminal may refer to: the network device sends a Demodulation Reference Signal (DMRS) (e.g., PDCCH DMRS) corresponding to each of at least one downlink control channel to the terminal.

For example, the Downlink Control Channel may be a Physical Downlink Control Channel (PDCCH).

Optionally, before step S101, the method further includes: the terminal receives at least one downlink control channel sent by the network equipment. 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 transmit the downlink data channel in a TX beam indicated by DCI carried in the downlink control channel, so that the terminal may receive the downlink data channel in an RX beam (receive beam) corresponding to the TX beam indicated by the DCI.

S102, the terminal receives a downlink data channel sent by the network equipment.

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

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

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

In the implementation process, the terminal can 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 determining that the downlink data channel is not correctly received. The terminal may also determine the 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 correctly received. The time when the terminal determines the channel quality corresponding to the at least one downlink control channel is not limited in the embodiments of the present application.

Illustratively, 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 part of or all of the plurality of downlink control channels monitored by the terminal. For example, if the number of the downlink control channels monitored by the terminal is 5, at least one downlink control channel may be the 5 downlink control channels, or may be a part of the 5 downlink control channels. The embodiments of the present application do not limit this.

The channel quality corresponding to 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. E.g. endAnd if the at least one downlink control channel monitored by the terminal is PDCCH1, PDCCH2 and PDCCH3, the terminal acquires the channel quality of each PDCCH in PDCCH 1-PDCCH 3. Namely CQI_PDCCH1、CQI_PDCCH2And CQI_PDCCH3。

The downlink Channel Quality may be a Channel Quality Indicator (CQI).

Illustratively, the determining, by the terminal, that the downlink data channel is not correctly received includes any one of: the terminal determines that the downlink is out of step (for example, the downlink timing of the terminal and the network device is out of step, which results in that the terminal cannot correctly receive the downlink data channel); channel quality degradation (e.g., doppler shift spread) caused by an increase in the moving speed of the terminal; the beam forming vector/pre-coding matrix/codebook of the downlink data channel is not matched with the downlink channel; downlink control information DCI demodulation errors; a Transmission Configuration Indicator state (TCI states) of at least one downlink control channel indicates that RRC Configuration and MAC-CE activation have been completed, and TCI states of a downlink data channel do not yet complete MAC-CE activation; the terminal cannot correctly receive downlink data after random access (for example, after initial access, RRC connection reestablishment, and cell handover); the terminal cannot correctly receive the downlink data after beam failure recovery (beam failure recovery). The terminal cannot correctly receive downlink data (e.g., Timing Advance Timing offset) after the ON period of (Connected) Discontinuous Reception (C) DRX) arrives.

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

Specifically, the terminal determines the channel quality corresponding to at least one downlink control channel according to a Demodulation Reference Signal (DMRS) corresponding to the at least one downlink control channel, which may specifically be implemented in the following manner: and the terminal calculates and obtains the layer 1-reference signal receiving power corresponding to each downlink control channel according to the demodulation reference signal corresponding to each downlink control channel in at least one downlink control channel. And the terminal calculates and obtains the Signal to Interference plus Noise Ratio (SINR) corresponding to each downlink control channel according to the L1-RSRP corresponding to each downlink control channel. And the terminal obtains the respective channel quality of each downlink control channel according to the respective corresponding SINR of each downlink control channel.

For example, in the narrowband condition, the network device may send the demodulation reference signal corresponding to the at least one downlink control channel on the candidate time-frequency resource of the downlink control channel that the terminal needs to perform blind detection. Under the broadband condition, the network device may send a demodulation reference signal corresponding to at least one downlink control channel on all Resource Element Groups (REGs) included in continuous Resource Blocks (RBs) of a control Resource set (CORESET) of the downlink control channel that the terminal needs to perform blind detection. Therefore, the following embodiments will respectively describe that the terminal determines the channel quality corresponding to at least one downlink control channel under different conditions.

As another embodiment of the present application, a method provided in an embodiment of the present application further includes: the terminal determines that in the narrowband case: the demodulation reference signal corresponding to at least one downlink control channel is sent on the candidate time frequency resource of the downlink control channel which needs to be detected by the terminal in a blind mode, and the terminal determines the channel quality corresponding to at least one downlink control channel according to the demodulation reference signal corresponding to 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 transmit control information, and the terminal needs to try to blind-detect the downlink control information on these candidate time-frequency resources.

Optionally, as a further embodiment of the present application, the method provided in the embodiment of the present application further includes: the terminal determines that in the broadband case: the demodulation reference signal corresponding to at least one downlink control channel is sent on all Resource Element Groups (REGs) contained in continuous Resource Blocks (RBs) of a control Resource set (CORESET) of the downlink control channel to be blind-detected by the terminal, and 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 on all REGs.

Here, the RB denotes a concept of one frequency domain, i.e., 12 subcarriers. REG denotes a time-frequency Resource concept, i.e., 12 subcarriers over 1 slot (slot) time, and DMRSs of a downlink control channel (e.g., PDCCH) are distributed on REG at a density of 1/4, i.e., distributed on 1 st, 5th, and 9 th REs (Resource elements) of REG.

Wherein, a Control-Resource Set (CORESET) can be understood as a time-frequency Resource Set. In the time domain, 1 CORESET may be configured as 1 or several consecutive Orthogonal Frequency Division Multiplexing (OFDM) symbols; in the frequency domain, 1 CORESET may be a set of consecutive or non-consecutive frequency domain resources, including search spaces at different aggregation levels.

Further, the layer 1-reference signal received power is an average value of received signal powers of all Resource Elements (REs) carrying DMRSs within a certain Symbol (Symbol), that is, an average received power of each DMRS RE, and may be obtained through measurement and calculation.

Meanwhile, the terminal measures a Received Signal Strength Indicator (RSSI), i.e., the total Received Signal power of all REs in the Symbol and in the DMRS bandwidth of the PDCCH, i.e., the total power of all Received signals (including pilot signals, data signals, interference signals, noise signals, and the like).

Suppose M_DMRSFor the total DMRS RE number within the DMRS bandwidth of the Symbol and the PDCCH, assume M_SCIs the Symbol and the total number of REs in the PDCCH DMRS bandwidth, we can obtain: the Symbol and the total received power RP of all DMRS within the DMRS bandwidth of the PDCCH_DMRS：RP_DMRS＝RSRP*M_DMRS. TheSymbol and total received power RP of all PDSCH REs (all REs remaining after DMRS REs are removed) within the DMRS bandwidth of the PDCCH_PDSCH. Wherein, RP_PDSCH＝RSRP*p*(M_SC-M_DMRS). Here, p represents pB or pA, and both represent a ratio of Energy Per Resource Element (EPRE) of PDSCH to EPRE of DMRS. The Symbol and the power RP of all interference and noise within the PDCCH DMRS bandwidth_IN: wherein, RP_IN＝RSSI-RP_DMRS-RP_PDSCH. SINR within DMRS bandwidth of the Symbol and the PDCCH: wherein SINR is (RP)_DMRS+RP_PDSCH)/RP_IN。

As a possible implementation: illustratively, the terminal obtains the respective channel quality of each downlink control channel according to the respective SINR corresponding to each downlink control channel, and may be implemented by the following means: and the terminal determines the respective channel quality of each downlink control channel according to the corresponding SINR of each downlink control channel and the mapping relation between the preset one or more SINRs and the channel quality corresponding to each SINR in the one or more SINRs. Thus, after the terminal determines the SINR, the terminal may determine the channel quality having a mapping relation with the SINR from the mapping relation.

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

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

TABLE 1 mapping relationship between SINR and channel quality

SINR	Channel quality
		SINR1	CQI1
SINR2	CQI2

For example, if the terminal determines that the SINR for the downlink control channel is SINR1, the terminal can determine that the channel quality for the downlink control channel is CQI1 from table 1.

For another example, the mapping relationship may exist in the form of a linear or non-linear mapping table. For example, assuming that the SINR maximum is SINRmax, the uniform linear mapping table can be designed as: n in the interval [0, SINRmax ] is equally divided, and then, the values [0, 1, …, 15] are respectively mapped from small to large, and the corresponding values can be used as CQI.

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

S104, the terminal sends first indication information to the network equipment, wherein the first indication information is used for indicating the channel quality corresponding to at least one downlink control channel.

For example, the terminal may indicate, by using a bit in an uplink control channel (e.g., PUCCH) indicated by the downlink control channel, a channel quality corresponding to at least one downlink control channel by the network device. Namely, the first indication information is carried in the uplink control channel.

Specifically, step S104 may be implemented by: the terminal determines that the network equipment allocates the time-frequency resources required by the uplink control channel to the terminal through the downlink control channel, and the terminal sends first indication information to the network equipment through the uplink control channel on the allocated time-frequency resources.

Optionally, the uplink control channel may also be used to report an Acknowledgement Character (ACK)/Negative Acknowledgement (NACK).

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

S105, the network equipment receives the first indication information sent by the terminal.

Specifically, the network device may receive, on the time-frequency resource of the uplink control channel allocated to the terminal, the first indication information sent by the terminal through the uplink control channel. By receiving the first indication information on the allocated time frequency resources, the network device can be prevented from receiving the first indication information sent by the terminal on a plurality of time frequency resources, thereby reducing the time for acquiring the first indication information.

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

S106, the network equipment determines the channel quality corresponding to at least one downlink control channel according to the first indication information.

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

For example, the network device may adjust the transmission policy of the downlink data channel by: the network equipment reselects one TX beam to send the PDSCH according to the implementation decision of the network equipment. Specifically, the network device first transmits a downlink control channel (PDCCH1) through TX beam1, and then transmits a downlink data channel (PDSCH) through TX beam2, and uses a certain higher MCS level. However, the terminal cannot correctly demodulate the PDSCH and feeds back CQI (which may be referred to as CQI) obtained from a demodulation reference signal (DMRS) corresponding to the downlink control channel (PDCCH1)_PDCCH1). The network device may determine the quality of the TX beam1 transmitting the downlink control channel (PDCCH 1). At this time, the network device may decrease the MCS level and continue to transmit the next PDSCH retransmission on the original PDSCH TX beam2, or select the original PDCCH TX beam1 to transmit the next PDSCH retransmission.Specifically, one TX beam is selected, that is, the signal transmission direction in the power set identified by a certain reference signal ID is selected. And then the network equipment enters a retransmission stage, firstly sends the PDCCH and then sends the PDSCH. The terminal receives the PDCCH, measures PDCCH DMRS and calculates CQI_PDCCHAnd then, according to the information of the PDSCH TX beam, the PRB number, the frequency domain position of the PRB and the like indicated by the DCI, the PDSCH is received and tried to be demodulated, and meanwhile, PDSCH DMRS is measured and CQI is calculated to obtain_PDSCH. If the terminal successfully demodulates the PDSCH, the terminal may feed back an ACK on the PUCCH resource indicated by the network device. Otherwise, the following steps are carried out: CQI obtained by terminal according to measurement_PDCCHAnd CQI_PDSCHSelecting CQI_PDCCHAnd CQI_PDSCHAnd the network equipment reports the better CQI value and the corresponding DMRS information to the network equipment, and the network equipment adjusts the PDSCH retransmission strategy … … again according to the received CQI and the corresponding DMRS information until the terminal correctly demodulates the PDSCH, feeds back ACK and finishes the process. Or the maximum retransmission times is reached, the corresponding HAQR processing flow is entered, and then if the network equipment enters PDSCH initial transmission/retransmission again, the terminal feeds back according to the steps.

It should be noted that, in this 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 resource required by the uplink control channel allocated by the network device to the terminal.

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

s107, the terminal sends second indication information to the network equipment, wherein the second indication information is used for indicating 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 for indicating the reported channel quality size to the network device. The second indication information is used for indicating to the network device which one or which downlink control channel the channel quality reported by the terminal is obtained according to.

The first indication information and the second indication information can 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 this embodiment of the present application.

For example, 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 using the first indication information, the size of the second indication information in the embodiment of the present application may be n bits, where n ═ ceil [ log2(m) ], and the ceil [ ] function indicates rounding up, that is, the terminal may use n bits (bits) in the uplink control channel to indicate an index of the reported one downlink control channel.

Taking an example that the first indication information and the second indication information can be carried in the same uplink control channel and sent to the network device, the terminal may use the remaining bits of the uplink control channel except the bit occupied by the second indication information to 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 bits or which 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 negotiate in advance which bits or which bits in the time-frequency resources of the uplink control channel are associated with the second indication information. Or the network equipment designates to the terminal which bit or bits in the time-frequency resource using the uplink control channel are associated with the second indication information. Or after receiving the time-frequency resources occupied by the uplink control channel, the terminal automatically determines which bit or bits in the time-frequency resources of the uplink control channel are associated with the second indication information, and sends the indication information to the network equipment, so that the network equipment determines which bit or bits in the time-frequency resources of the uplink control channel are associated with the second indication information.

And S108, the network equipment receives the second indication information.

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

It should be noted that, in this embodiment of the present application, when the terminal successfully demodulates the downlink data carried by the downlink data channel, the terminal may directly feed back the ACK to the network device. When the terminal does not successfully 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:

and the network equipment determines the information of the downlink control channel corresponding to each channel quality in the channel qualities corresponding to the at least one downlink control channel according to the second indication information.

The information of the downlink control channel is used for determining the 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 this embodiment of the application, when the network device sends a demodulation reference signal corresponding to one downlink control channel to the terminal and the number of the 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 indication information, and does not need to receive the second indication information for identifying the index of the downlink control channel corresponding to the channel quality reported by the terminal.

As shown in fig. 6 to fig. 7, in the embodiments, the terminal may receive the demodulation reference signal corresponding to the downlink control channel sent by the network device, and obtain the channel quality according to the demodulation reference signal corresponding to the downlink control channel. However, in an actual process, the terminal may also receive a demodulation reference signal corresponding to a downlink control channel and a demodulation reference signal corresponding to a downlink data channel, which are sent by the network device, and obtain a channel quality CQI according to the demodulation reference signal corresponding to the downlink control channel_PDCCHAnd obtaining a channel quality indicator CQI according to a demodulation reference signal corresponding to a downlink data channel_PDSCH. Based on this, as shown in fig. 8, an embodiment of the present application provides another schematic flow chart of interaction between channel quality notification and a receiving method, where the method includes:

s201, the network equipment sends a downlink data channel to the terminal.

The description in step S201 may specifically refer to the description at S101, and is not repeated here.

S202, the terminal receives a downlink data channel sent by the network equipment.

The description in step S202 may specifically refer to the description at S102, and is not repeated here.

S203, if the terminal determines that the downlink data channel is not correctly received, 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.

The method for determining that the downlink data channel is not correctly received by the terminal may refer to the description in the foregoing embodiment, and is not described herein again.

The method for determining the channel quality corresponding to the at least one downlink control channel by the terminal may refer to the description in the foregoing embodiment, and is not described herein again. Optionally, the manner in which the terminal obtains the channel quality corresponding to the downlink data channel may refer to the manner in which the terminal determines the channel quality corresponding to at least one downlink control channel described in the foregoing embodiment, and the difference is that when the terminal determines the channel quality corresponding to the downlink data channel, the downlink control channel may be replaced with the downlink data channel in an adaptive manner.

S204, the terminal sends first indication information to the network equipment, wherein the first indication information is used for indicating at least one channel quality in channel quality corresponding to at least one downlink control channel and channel quality corresponding to a downlink data channel.

Specifically, the first indication information may be sent as described in the foregoing embodiment S104, except that in S204, the channel quality indicated by the first indication information is at least one of a channel quality corresponding to at least one downlink control channel and a channel quality corresponding to a downlink data channel. And the channel quality indicated by the first indication information in S104 is the channel quality corresponding to at least one downlink control channel.

For example, the at least one channel quality may be a channel quality greater than a preset threshold, from among a channel quality corresponding to the at least one downlink control channel and a channel quality corresponding to the downlink data channel. Or, the at least one channel quality may be a channel quality with a highest channel quality among channel qualities corresponding to the at least one downlink control channel and the downlink data channel. Alternatively, the at least one channel quality may be all channel qualities corresponding to the at least one downlink control channel and the downlink data channel.

For example, the terminal may determine the downlink data channel according to the demodulation reference signal corresponding to the downlink data channelThe downlink channel quality of the row data channel, denoted as CQI_PDSCH. The terminal may determine the downlink channel quality of at least one downlink control channel according to a Demodulation Reference Signal (DMRS) corresponding to the at least one downlink control channel, and record the downlink channel quality as a CQI_PDCCH1、CQI_PDCCH2And CQI_PDCCH3。

Exemplarily, when at least one channel quality that the terminal needs to report is a channel quality greater than a preset threshold in the channel qualities corresponding to the at least one downlink control channel and the downlink data channel, if the terminal determines that the CQI is present_PDCCH1、CQI_PDSCHIf the channel quality is greater than the preset threshold, the terminal may determine that at least one channel quality includes CQI_PDCCH1And CQI_PDSCHThat is, the terminal can indicate the CQI using the first indication information_PDCCH1、CQI_PDSCHThe size of (2).

The preset threshold is not limited in the embodiment of the application, and can be set according to needs in the actual process. The preset threshold may be configured for the terminal by the network device, or may also be preconfigured for the terminal, which is not limited in this embodiment of the application.

Exemplarily, when at least one channel quality that the terminal needs to report is a channel quality with the highest channel quality in the channel qualities corresponding to the at least one downlink control channel and the downlink data channel, if the CQI is a CQI_PDCCH1Greater than or equal to CQI_PDCCH2And CQI_PDCCH1Greater than or equal to CQI_PDCCH3And CQI_PDCCH1Greater than or equal to CQI_PDSCHThe terminal may determine that the at least one channel quality comprises a CQI_PDCCH1。

For example, when at least one channel quality that the terminal needs to report is a channel quality with the highest channel quality among the channel qualities corresponding to the at least one downlink control channel and the downlink data channels, if the number of the downlink control channels monitored by the terminal is one, the terminal may report the channel quality corresponding to the downlink control channel when it is determined 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 reporting the channel quality corresponding to the downlink data channel when the channel quality corresponding to the downlink data channel is determined to be greater than the channel quality corresponding to the downlink control channel.

Illustratively, when the terminal needs to report all the channel qualities, then at least one of the channel qualities includes CQI_PDCCH1、CQI_PDCCH2And CQI_PDCCH3. That is, the terminals respectively indicate CQI by using the first indication information_PDCCH1、CQI_PDCCH2And CQI_PDCCH3The size of (2).

It should be noted that, in this embodiment, when a terminal needs to report two or more channel qualities to a network device, the terminal sends a set formed by two or more channel qualities to the network device. For example, the terminal needs to report the CQI_PDCCH1、CQI_PDCCH2The terminal needs to report a set { CQI } formed by channel quality corresponding to PDCCH1 and channel quality corresponding to PDCCH2 to the network equipment_PDCCH1、CQI_PDCCH2}。

S205, the network equipment receives the first indication 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 equipment determines at least one channel quality according to the first indication information.

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

Optionally, after step S206, the network device may refer to the description at S106 in the foregoing embodiment to adjust the transmission policy of the downlink data channel according to at least one channel quality, and details are not described here again.

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

s207, the terminal sends second indication information to the network equipment, wherein the second indication information is used for indicating a channel corresponding to at least one channel quality.

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

Illustratively, if the terminal reports the channel quality CQI of the PDCCH1 to the network equipment by using the first indication information_PDCCH1The second indication information is used to indicate CQI_PDCCH1Is calculated from the demodulation reference signal of PDCCH 1.

Specifically, the specific sending manner of the second indication information may refer to the description at S107, and is not described herein again in this embodiment of the application.

S208, the network equipment receives second indication information sent by the terminal.

Optionally, the method provided in the embodiment of the present application further includes: the network device adjusts the transmission policy of the downlink data channel according to the first indication information and/or the second indication information, and the specific adjustment manner may refer to the description in the foregoing embodiments, which is not described herein again.

Optionally, after step S208, the method further includes: networkAnd the equipment determines a channel corresponding to each channel quality in the at least one channel quality according to the second indication information. For example, the second indication information indicates CQI_PDCCH1Is calculated according to the downlink control channel 1, the network equipment can determine the CQI_PDCCH1The corresponding channel is a downlink control channel 1.

The above-mentioned scheme of the embodiment of the present application is introduced mainly from the perspective of interaction between network elements. It is to be understood that each network element, for example, the channel quality informing device, the channel quality receiving device, etc., includes a corresponding hardware structure and/or software module for performing each function in order to realize the above functions. Those of skill in the art would readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiments of the present application, the channel quality notification apparatus and the channel quality receiving apparatus may be exemplified according to the above methods to divide the functional units, for example, each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit. It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation.

The following description will be given by taking the division of each function module corresponding to each function as an example:

in the case of using an integrated unit, fig. 10 shows a schematic diagram of a possible structure of a channel quality notification apparatus according to the above embodiment, which may be a terminal or a chip applied in the terminal. The channel quality notification apparatus includes: a receiving unit 201, a determining unit 202 and a transmitting unit 203.

In a possible implementation manner, the receiving unit 201 is configured to support the channel quality notification apparatus to execute step S102 in the foregoing embodiment. The determination unit 202 is configured to support the channel quality notification apparatus to execute step S103 in the above-described embodiment. The transmitting unit 203 is configured to support the channel quality notification apparatus to execute steps S104 and S107 in the above embodiments. All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.

As another possible implementation manner, the receiving unit 201 in the channel quality notification apparatus shown in fig. 10 is configured to execute S202. The determining unit 202 is configured to support the channel quality notifying apparatus to execute step S203 in the above-described embodiment. The transmitting unit 203 is configured to support the channel quality notification apparatus to execute steps S204 and S207 in the foregoing embodiments. All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.

In the case of using an integrated unit, fig. 11 shows a schematic diagram of a possible logical structure of the channel quality notification apparatus in the above embodiment, which may be the terminal in the above embodiment or a chip applied in the terminal. The channel quality notification device includes: a processing module 212 and a communication module 213. The processing module 212 is used for controlling and managing the operation of the channel quality notification apparatus, for example, the processing module 212 is used for executing a step of performing message or data processing on the channel quality notification apparatus side, and the communication module 213 is used for performing a step of performing message or data processing on the channel quality notification apparatus side.

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

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

Optionally, the information processing apparatus may further include a storage module 211 for storing program codes and data of the channel quality notification apparatus.

The processing module 212 may be a processor or controller, such as 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 device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. A processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, a digital signal processor, a combination of microprocessors, and the like. The communication module 213 may be a transceiver, a transceiving circuit or a communication interface, etc. 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 apparatus according to the present application may be the device shown in fig. 12.

The communication interface 230, one or more (including two) processors 220, and the memory 240 are connected to each other via the bus 210. Bus 210 may be a PCI bus or EISA bus, etc. Bus 210 may be divided into an address bus, a data bus, a control bus, and so on. For ease of illustration, only one thick line is shown in FIG. 12, but this is not intended to represent only one bus or type of bus. The memory 240 is used for storing program codes and data of the channel quality informing apparatus, among others. The communication interface 230 is used to support the channel quality notification apparatus to communicate with other devices (e.g., channel quality receiving apparatus). The processor is configured to support the channel quality notification apparatus to execute the program codes and data stored in the memory 240, thereby performing control management on the operation of the channel quality notification apparatus.

For example, in one possible implementation, the communication interface 230 supports the channel quality notification apparatus to perform S102, S104, S107. The processor 220 is configured to enable the channel quality notification apparatus to execute the program codes and data stored in the memory 240 to implement S103 provided by the present application.

In another possible implementation, the communication interface 230 supports the channel quality notification apparatus to perform S202, S204, S207. The processor 220 is configured to enable the channel quality notification apparatus to execute the program codes and data stored in the memory 240 to implement S203 provided by the present application.

In the case of using an integrated unit, fig. 13 shows a schematic diagram of a possible structure of the channel quality receiving apparatus according to the foregoing embodiment, where the channel quality receiving apparatus may be a network device or a chip applied in the network device. The channel quality receiving apparatus includes: a transmitting unit 301, a receiving unit 302 and a determining unit 303.

As a possible implementation manner, the sending unit 301 is configured to support the channel quality receiving apparatus to execute step S101 in the foregoing embodiment. The receiving unit 302 is used to support the channel quality receiving apparatus to execute steps S105 and S108 in the above embodiments. The determining unit 303 is configured to support the channel quality receiving apparatus to execute step S106 in the above-described embodiment.

As another possible implementation manner, the sending unit 301 is configured to support the channel quality receiving apparatus to execute step S201 in the foregoing embodiment. The receiving unit 302 is used to support the channel quality receiving apparatus to execute steps S205 and S208 in the above embodiments. The determining unit 303 is configured to support the channel quality receiving apparatus to execute step S206 in the above-described 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 apparatus in the foregoing embodiment, where the channel quality receiving apparatus may be a network device in the foregoing embodiment or a chip applied to the network device. 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 operation of the channel quality receiving apparatus, and the communication module 313 is configured to execute a procedure of performing message or data processing on the channel quality receiving apparatus side.

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

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

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

The processing module 312 may be a processor or controller, such as 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 device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. A processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, a digital signal processor, a combination of microprocessors, and the like. The communication module 313 may be a transceiver, a transceiving circuit or a communication interface, etc. 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 apparatus according to the present 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 via the bus 310. The bus 310 may be a PCI bus or an EISA bus, etc. The bus 310 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in FIG. 15, but this is not intended to represent only one bus or type of bus. Wherein the memory 340 is used for storing program codes and data of the channel quality receiving apparatus. Communication interface 330 is used to support the channel quality receiving apparatus to communicate with other devices (e.g., terminals), and processor 320 is used to support the channel quality receiving apparatus to execute the program codes and data stored in memory 340 to implement the actions of message/data control on the channel quality receiving apparatus side.

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

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

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

Optionally, the chip 150 further includes a memory 1540, which may include both read-only memory and random access memory, and provides operating instructions and data to the processor 1510. A portion of memory 1540 may also include non-volatile random access memory (NVRAM).

In some embodiments, memory 1540 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof:

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

One possible implementation is: the terminal and the network device use chips with similar structures, and different devices can use different chips to realize respective functions.

The processor 1510 controls the operation of the terminal and the network device, and the processor 1510 may also be referred to as a Central Processing Unit (CPU). Memory 1540 can include both read-only memory and random-access memory, and provides instructions and data to processor 1510. A portion of memory 1540 may also include non-volatile random access memory (NVRAM). For example, in an application where memory 1540, interface circuit 1530 and memory 1540 are coupled together by bus system 1520, where bus system 1520 may include a power bus, control bus, status signal bus, etc. in addition to a data bus. For clarity of illustration, however, the various buses are labeled in fig. 16 as bus system 1520.

The method disclosed in the above embodiments 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 having signal processing capabilities. In implementation, the steps of the above method may be performed by instructions in the form of hardware, integrated logic circuits, or software in the processor 1510. The processor 1510 may be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, or discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 1540, and the processor 1510 reads the information in the memory 1540, and performs the steps of the above method in combination with the hardware thereof.

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

In the above embodiments, the instructions stored by 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 in the form of software and installed in the memory.

The computer program product includes one or more computer instructions. The procedures or functions according to the embodiments of the present application are all or partially generated when the computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, e.g., the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. A computer-readable storage medium may be any available medium that a computer can store or a data storage device including one or more available media integrated servers, data centers, and the like. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

In one aspect, a computer-readable storage medium is provided, in which instructions are stored, and when executed, the instructions cause a terminal or a chip applied in the terminal to perform S102, S103, S104, and S107 in the embodiments. And/or other processes performed by the terminal or chips applied in the terminal for the techniques described herein.

On the other hand, a computer-readable storage medium is provided, in which instructions are stored, and when executed, the instructions cause the terminal or a chip applied in the terminal to perform S202, S203, S204, S207 in the embodiment. And/or other processes performed by the terminal or chips applied in the terminal for the techniques described herein.

In still another aspect, a computer-readable storage medium is provided, in which instructions are stored, and when executed, cause a network device or a chip applied in the network device to perform S101, S105, and S106 in the embodiments. And S108. And/or other processes for the techniques described herein that are performed by a network device or chip applied in a network device.

In still another aspect, a computer-readable storage medium is provided, in which instructions are stored, and when executed, the instructions cause a network device or a chip applied in the network device to perform S201, S205, S206 in the embodiments. And S208. And/or other processes for the techniques described herein that are performed by a network device or chip applied in a network device.

The aforementioned readable storage medium may include: u disk, removable hard disk, read only memory, random access memory, magnetic or optical disk, etc. for storing program codes.

In one aspect, a computer program product comprising instructions stored therein, which when executed, cause a terminal or a chip applied in the terminal to perform S102, S103, S104, S107 in the embodiments is provided. And/or other processes performed by the terminal or chips applied in the terminal for the techniques described herein.

On the other hand, a computer program product is provided, which comprises instructions stored therein, which when executed, cause the terminal or a chip applied in the terminal to perform steps S202, S203, S204, S207 in the embodiments. And/or other processes performed by the terminal or chips applied in the terminal for the techniques described herein.

In another aspect, a computer program product is provided, which includes instructions stored therein, and when executed, causes a network device or a chip applied to the network device to perform S101, S105, and S106 in the embodiments. And S108. And/or other processes for the techniques described herein that are performed by a network device or chip applied in a network device.

In still another aspect, a computer program product comprising instructions stored therein, which when executed, cause a network device or a chip applied in the network device to perform S201, S205, S206 in the embodiments is provided. And S208. And/or other processes for the techniques described herein that are performed by a network device or chip applied in a network device.

In one aspect, a chip is provided, where the chip is applied in a terminal, and the chip includes one or more (including two) processors and an interface circuit, where the interface circuit and the one or more (including two) processors are interconnected by a line, and the processors are configured to execute instructions to perform 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, where the chip is applied in a terminal, and the chip includes one or more (including two) processors and an interface circuit, where the interface circuit and the one or more (including two) processors are interconnected by a line, and the processors are configured to execute instructions to perform 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, where the chip is applied in a network device, and the chip includes one or more (including two) processors and an interface circuit, where the interface circuit and the one or more (including two) processors are interconnected by a line, and the processors are configured to execute instructions to perform S101, S105, and S106 in the embodiments. And S108. And/or other processes performed by a network device for the techniques described herein.

In another aspect, a chip is provided, where the chip is applied in a network device, and the chip includes one or more (including two) processors and an interface circuit, where the interface circuit and the one or more (including two) processors are interconnected by a line, and the processors are configured to execute instructions to perform S201, S205, and S206 in the embodiments. And S208. And/or other processes performed by a network device for the techniques described herein.

The present application also provides a communication system including the channel quality notification apparatus shown in fig. 10 to 12 and the channel quality reception apparatus shown in fig. 13 to 15.

The embodiment of the application provides a communication system, wherein a terminal receives a downlink data channel sent by network equipment. The terminal determines that the downlink data channel is not correctly received, and sends first indication information for indicating the channel quality corresponding to at least one downlink control channel monitored by the terminal to the network equipment. When the network device executes downlink data retransmission, the downlink data channel transmission strategy can be adjusted according to the channel quality corresponding to the at least one downlink control channel received last time, for example, the quality of the transmission beam of the downlink data channel transmitted last time can be quickly identified, so that the transmission beam is quickly switched, the recovery of downlink data channel transmission is accelerated, the data interruption time delay is reduced, and the method is suitable for URLLC (universal resource reservation control) scenes.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented using a software program, 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. The procedures or functions according to the embodiments of the present application are all or partially generated when the computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)), or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or can comprise one or more data storage devices, such as a server, a data center, etc., that can be integrated with the medium. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

While the present application has been described in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed application, from a review of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the word "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. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

Although the present application has been described in conjunction with specific features and embodiments thereof, it will be evident that various modifications and combinations can be made thereto without departing from the spirit and scope of the application. Accordingly, the specification and figures are merely exemplary of the present application as defined in the appended claims and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of the present application. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include such modifications and variations.

Claims

1. A channel quality notification method, comprising:

a terminal receives downlink data carried by a downlink data channel sent by network equipment;

when the terminal determines that the downlink data carried by the downlink data channel is not correctly received, the terminal sends first indication information to the network device, where the first indication information is used to indicate channel quality corresponding to at least one downlink control channel monitored by the terminal.

2. The method of claim 1, wherein the at least one downlink control channel is a downlink control channel for scheduling the downlink data channel.

3. A channel quality notification method according to claim 1 or 2, wherein said method further comprises:

and the terminal sends second indication information to the network equipment, wherein the second indication information is used for indicating the at least one downlink control channel.

4. A channel quality notification method, comprising:

when the terminal determines that the downlink data carried by the downlink data channel is not correctly received, 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 the terminal sends first indication information to the network equipment, wherein the first indication information is used for indicating at least one of the channel quality corresponding to the at least one downlink control channel and the channel quality corresponding to the downlink data channel.

5. The method of claim 4, wherein the at least one channel quality is a channel quality greater than or equal to a preset threshold, or a channel quality with a highest channel quality, or all channel qualities corresponding to the at least one downlink control channel and the downlink data channel, in the channel quality corresponding to the at least one downlink control channel and the channel quality corresponding to the downlink data channel.

6. A method for channel quality notification according to claim 4 or 5, said method further comprising:

and the terminal sends second indication information to the network equipment, wherein the second indication information indicates a channel corresponding to the at least one channel quality.

7. The method according to claim 4 or 5, wherein said at least one downlink control channel is a downlink control channel for scheduling said downlink data channel.

8. A channel quality receiving method, comprising:

the network equipment sends downlink data carried by a downlink data channel to the terminal;

the network equipment receives first indication information sent by the terminal, wherein the first indication information is used for indicating the channel quality corresponding to at least one downlink control channel monitored by the terminal;

and the network equipment determines the channel quality corresponding to the at least one downlink control channel according to the first indication information.

9. The method as claimed in claim 8, wherein said at least one downlink control channel is a downlink control channel for scheduling said downlink data channel.

10. The channel quality receiving method according to claim 8 or 9, wherein the method further comprises:

and the network equipment receives second indication information sent by the terminal, wherein the second indication information indicates the at least one downlink control channel.

11. A channel quality receiving method, comprising:

the network equipment receives first indication information sent by the terminal; the first indication information is used for indicating at least one channel quality in channel quality corresponding to at least one downlink control channel and channel quality corresponding to the downlink data channel;

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

12. The method of claim 11, wherein the at least one channel quality is a channel quality greater than or equal to a preset threshold among the channel qualities corresponding to the at least one downlink control channel and the downlink data channels, or a channel quality with a highest channel quality, or all channel qualities corresponding to the at least one downlink control channel and the downlink data channels.

13. The channel quality receiving method according to claim 11 or 12, wherein the at least one downlink control channel is a downlink control channel for scheduling the downlink data channel.

14. The channel quality receiving method according to claim 11 or 12, wherein the method further comprises:

and the network equipment receives second indication information sent by the terminal, wherein the second indication information indicates a channel corresponding to the at least one channel quality.

15. A channel quality notification apparatus, wherein the apparatus is a terminal or a chip applied in the terminal, and the apparatus comprises:

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

a sending unit, configured to send, to the network device, first indication information when it is determined that the downlink data carried by the downlink data channel is not correctly received, where the first indication information is used to indicate channel quality corresponding to at least one downlink control channel monitored by the terminal.

16. The apparatus of claim 15, wherein the at least one downlink control channel is a downlink control channel for scheduling the downlink data channel.

17. The apparatus according to claim 15 or 16, wherein the sending unit is further configured to send second indication information to the network device, where the second indication information is used to indicate the at least one downlink control channel.

18. A channel quality notification apparatus, wherein the apparatus is a terminal or a chip applied in the terminal, and the apparatus comprises:

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

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 channel quality corresponding to the at least one downlink control channel and channel quality corresponding to the downlink data channel.

19. The apparatus according to claim 18, wherein the at least one channel quality is a channel quality greater than or equal to a preset threshold among the channel qualities corresponding to the at least one downlink control channel and the downlink data channels, or a channel quality with a highest channel quality, or all channel qualities corresponding to the at least one downlink control channel and the downlink data channels.

20. The apparatus according to claim 18 or 19, wherein the sending unit is further configured to send second indication information to the network device, where the second indication information indicates a channel to which the at least one channel quality corresponds.

21. The apparatus according to claim 18 or 19, wherein said at least one downlink control channel is a downlink control channel for scheduling said downlink data channel.

22. A channel quality receiving apparatus, wherein the apparatus is a network device or a chip applied in a network device, the apparatus comprising:

a sending unit, configured to send downlink data carried by a downlink data channel to a terminal;

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

a determining unit, configured to determine, according to the first indication information, channel quality corresponding to the at least one downlink control channel.

23. The apparatus according to claim 22, wherein said at least one downlink control channel is a downlink control channel for scheduling said downlink data channel.

24. The apparatus according to claim 22 or 23, wherein the receiving unit is further configured to receive second indication information sent by the terminal, where the second indication information indicates the at least one downlink control channel.

25. A channel quality receiving apparatus, wherein the apparatus is a network device or a chip applied in a network device, the apparatus comprising:

a receiving unit, configured to receive first indication information sent by the terminal; the first indication information is used for indicating at least one channel quality in 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 the at least one channel quality according to the first indication information.

26. The apparatus according to claim 25, wherein the at least one channel quality is a channel quality greater than or equal to a preset threshold among the channel qualities corresponding to the at least one downlink control channel and the downlink data channels, or a channel quality with a highest channel quality, or all channel qualities corresponding to the at least one downlink control channel and the downlink data channels.

27. The apparatus according to claim 25 or 26, wherein the at least one downlink control channel is a downlink control channel for scheduling the downlink data channel.

28. The apparatus according to claim 25 or 26, wherein the receiving unit is further configured to receive second indication information sent by the terminal, where the second indication information indicates a channel corresponding to the at least one channel quality.

29. A chip, characterized in that the chip comprises a processor and interface circuitry, the interface circuitry being coupled to the processor, the processor being configured to run a computer program or instructions to implement a channel quality notification method as claimed in any one of claims 1 to 3, or to implement a channel quality notification method as claimed in any one of claims 4 to 7, or to implement a channel quality reception method as claimed in any one of claims 8 to 10, or to implement a channel quality reception method as claimed in any one of claims 11 to 14, the interface circuitry being configured to communicate with other modules outside the chip.