CN116325893A

CN116325893A - Communication method and related equipment

Info

Publication number: CN116325893A
Application number: CN202080105658.2A
Authority: CN
Inventors: 李锐杰; 官磊; 李胜钰
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2023-06-23
Also published as: WO2022067529A1

Abstract

The embodiment of the application provides a communication method and related equipment, wherein the method comprises the following steps: the terminal equipment receives configuration information from the network equipment; the terminal equipment receives downlink data from the network equipment; when the downlink data decoding fails, the terminal device determines first information of channel state information, where the first information of channel state information is used to determine whether to send the channel state information to the network device, where the channel state information is determined according to the configuration information.

Description

Communication method and related equipment

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a communications method and related devices.

Background

Compared with the previous generation mobile communication systems, the 5G communication system has higher requirements on transmission rate, time delay and power consumption, and aims to support higher system performance, multiple service types, different deployment scenes and wider frequency spectrum range. Among them, enhanced mobile broadband (enhanced mobile broadband, emmbb), mass machine type communication (massive machine type communication, mctc), ultra-reliable low delay communication (ultra-reliable and low latency communications, URLLC) are three typical application scenarios of 5G communication systems.

At present, when a terminal device decodes and acquires data, if a data channel is decoded in error, a network device schedules retransmission for the terminal device and retransmits the data, and in order to more accurately schedule time-frequency resources of the data channel for the terminal device, the network device triggers the terminal device to receive or transmit a reference signal, thereby providing more accurate channel state information and further improving the performance of a communication system. The transmission of the current reference signal includes periodic transmission, semi-permanent transmission, and aperiodic transmission. For the aperiodic reference signal, if the decoding of the data channel of the terminal equipment is wrong, the terminal equipment feeds back a negative acknowledgement, and correspondingly, the network equipment sends the reference signal to the terminal equipment after receiving the negative acknowledgement, the terminal equipment measures the channel state information according to the reference signal after receiving the reference signal, and feeds back the channel state information to the network equipment, so that the whole process consumes longer time, and is not feasible for URLLC services with higher time-delay requirements. For periodic and semi-permanent reference signals, the terminal device periodically receives the reference signal and periodically feeds back channel state information according to the reference signal. This will result in a large overhead, especially when the number of devices in the network is relatively large, which is very significant. Furthermore, for URLLC traffic, the traffic arrival may be random, i.e. bursty traffic, requiring a very short configured channel state information-reference signal (CSI-RS) period for better channel measurement, which will further increase the occupied resources.

Disclosure of Invention

The embodiment of the application discloses a communication method and related equipment, which can determine how to send channel state information and/or other data when resources configured by network equipment for sending the channel state information overlap with resources for sending other data.

The first aspect of the embodiment of the application discloses a communication method, which can be executed by a terminal device or a chip in the terminal device, and the method comprises the following steps:

receiving configuration information from a network device;

receiving downlink data from the network device;

when the downlink data decoding fails, determining first information of channel state information, wherein the first information of the channel state information is used for determining whether to send the channel state information to the network equipment, and the channel state information is determined according to the configuration information;

and sending a negative acknowledgement NACK to the network equipment, wherein the negative acknowledgement NACK is used for indicating that the downlink data decoding fails. In the method, when the resources configured by the network equipment for sending the channel state information overlap with the resources for sending other data, the terminal equipment can determine how to send the channel state information and/or other data according to the first information of the channel state information, so that the communication performance is improved.

In one possible implementation manner, the determining the first information of the channel state information when the downlink data decoding fails includes: the first information of the channel state information is the same as the first information of the acknowledgement NACK.

In the method, the terminal equipment can rapidly determine the first information of the channel state information by indicating that the first information of the channel state information is identical to the first information of the acknowledgement NACK or not, and the channel state information can better match the characteristics of the NACK, so that the channel state information can better act on the scheduling of data.

In yet another possible implementation, the method further includes: and receiving first Downlink Control Information (DCI) from the network equipment, wherein the first Downlink Control Information (DCI) is used for indicating the first information of the Negative Acknowledgement (NACK).

In yet another possible implementation manner, the determining the first information of the channel state information when the downlink data decoding fails includes: and determining first information of the channel state information according to the configuration information.

In yet another possible implementation manner, the determining, according to the configuration information, the first information of the channel state information includes: determining that the channel state information is semi-permanent channel state information, SP-CSI, according to the configuration information; and receiving second Downlink Control Information (DCI) from the network equipment, wherein the second DCI is used for indicating the first information of the SP-CSI.

In yet another possible implementation manner, the determining, according to the configuration information, the first information of the channel state information includes: determining that the channel state information is aperiodic channel state information A-CSI according to the configuration information; and receiving third Downlink Control Information (DCI) from the network equipment, wherein the third DCI is used for indicating first information of the aperiodic channel state information (A-CSI).

In yet another possible implementation manner, the determining, according to the configuration information, the first information of the channel state information includes: and determining that the channel state information is periodic channel state information P-CSI according to the configuration information, wherein first information of the periodic channel state information P-CSI is a first state.

In yet another possible implementation manner, the determining, according to the configuration information, the first information of the channel state information includes: determining that the channel state information is semi-permanent channel state information, SP-CSI, according to the configuration information; receiving a medium access control element, MAC CE, from the network device; in case that the MAC CE is used to activate the configuration information, the first information of the semi-permanent channel state information SP-CSI is a first state.

In yet another possible implementation manner, the determining the first information of the channel state information when the downlink data decoding fails includes: and determining the first information of the channel state information to be in a second state, wherein the first information of the channel state information corresponding to the configuration information is in the first state.

In the above method, generally, the first information of the channel state information corresponding to the configuration information is in a first state, but when the downlink data decoding fails, the first information of the channel state information is in a second state. In the case of failure of the downlink data decoding, the state of the first information of the channel state information is different from that of the normal case, so that whether the first information of the channel state information and the downlink data decoding fail is correlated, and whether the downlink data decoding is correct or not can be matched.

In yet another possible implementation manner, the determining the first information of the channel state information when the downlink data decoding fails includes: and when the downlink data decoding fails, determining that the first information of the channel state information is in a second state.

In yet another possible implementation, the first state is low priority.

In yet another possible implementation, the second state is high priority.

In yet another possible implementation, the first information is priority information.

In one possible implementation, the channel state information includes one or more of channel quality indication CQI information, rank indication RI information, precoding matrix indication PMI information, channel state information reference signal resource index CRI information, and interference information.

A second aspect of the embodiments of the present application discloses a communication method, which may be performed by a network device or a chip in the network device, the method including:

transmitting configuration information to terminal equipment, wherein the configuration information is used for determining channel state information by the terminal equipment;

transmitting downlink data to the terminal equipment, wherein the downlink data is used for determining first information of the channel state information when the terminal equipment fails to decode the downlink data, and the first information of the channel state information is used for determining whether to transmit the channel state information to network equipment or not by the terminal equipment;

and receiving a negative acknowledgement NACK from the terminal equipment, wherein the negative acknowledgement NACK is used for indicating that the terminal equipment fails to decode the downlink data.

In the method, when the resources configured by the network equipment for sending the channel state information overlap with the resources for sending other data, the terminal equipment can determine how to send the channel state information and/or other data according to the first information of the channel state information, so that the communication performance is improved.

In one possible implementation, the first information of the channel state information is the same as the first information of the acknowledgement NACK.

In the above method, the terminal device can rapidly determine the first information of the channel state information by indicating the same manner as the first information of the channel state information or the first information of the acknowledgement NACK. Moreover, the first information of the channel state information is the same as the first information of the acknowledgement NACK or not, and the channel state information can better match the characteristics of NACK, so that the channel state information can better act on the scheduling of data.

In yet another possible implementation manner, first downlink control information DCI is sent to the terminal device, where the first downlink control information DCI is used to indicate the first information of the negative acknowledgement NACK.

In yet another possible implementation manner, the channel state information is semi-permanent channel state information SP-CSI, which is determined by the terminal device according to the configuration information, and second downlink control information DCI is sent to the terminal device, where the second DCI is used to indicate first information of the semi-permanent channel state information SP-CSI.

In yet another possible implementation manner, the channel state information is aperiodic channel state information a-CSI, which is determined by the terminal device according to the configuration information, and third downlink control information DCI is sent to the terminal device, where the third DCI is used to indicate first information of the aperiodic channel state information a-CSI.

In yet another possible implementation manner, the channel state information is periodic channel state information P-CSI, and the first information of the periodic channel state information P-CSI is determined by the terminal device according to the configuration information and is a first state.

In yet another possible implementation manner, the channel state information is semi-permanent channel state information SP-CSI, which is determined by the terminal device according to the configuration information, and a medium access control element MAC CE is sent to the terminal device, where the MAC CE is used to activate the configuration information, and the first information of the semi-permanent channel state information SP-CSI is the first state.

In yet another possible implementation manner, the first information of the channel state information is a second state, where the first information of the channel state information corresponding to the configuration information is the first state.

In yet another possible implementation, the first state is low priority.

In yet another possible implementation, the second state is high priority.

A third aspect of the embodiments of the present application discloses a communication method, which may be performed by a terminal device or a chip in the terminal device, the method including:

Receiving configuration information from a network device;

receiving downlink data from the network device;

and when the downlink data decoding fails, determining the priority of channel state information, wherein the channel state information is determined according to the configuration information.

In one implementation, the determining the priority of the channel state information when the downlink data decoding fails includes: and the priority of the channel state information is the same as the priority of the negative acknowledgement NACK, and the negative acknowledgement NACK is used for indicating the decoding failure of the downlink data.

In yet another possible implementation, the method further includes: and receiving first Downlink Control Information (DCI) from the network equipment, wherein the first Downlink Control Information (DCI) is used for indicating the priority of the Negative Acknowledgement (NACK).

In yet another possible implementation manner, the determining the priority of the channel state information when the downlink data decoding fails includes: and determining the priority of the channel state information according to the configuration information.

In yet another possible implementation manner, the determining the priority of the channel state information according to the configuration information includes: determining that the channel state information is semi-permanent channel state information, SP-CSI, according to the configuration information; and receiving second Downlink Control Information (DCI) from the network equipment, wherein the second DCI is used for indicating the priority of the SP-CSI.

In yet another possible implementation manner, the determining the priority of the channel state information according to the configuration information includes: determining that the channel state information is aperiodic channel state information A-CSI according to the configuration information; and receiving third Downlink Control Information (DCI) from the network equipment, wherein the third DCI is used for indicating the priority of the aperiodic channel state information (A-CSI).

In yet another possible implementation manner, the determining the priority of the channel state information according to the configuration information includes: and determining the channel state information as periodic channel state information P-CSI according to the configuration information, wherein the priority of the periodic channel state information P-CSI is low.

In yet another possible implementation manner, the determining the priority of the channel state information according to the configuration information includes: determining that the channel state information is semi-permanent channel state information, SP-CSI, according to the configuration information; receiving a medium access control element, MAC CE, from the network device; in case that the MAC CE is used to activate the configuration information, the priority of the semi-permanent channel state information SP-CSI is low priority.

In yet another possible implementation manner, the determining the priority of the channel state information when the downlink data decoding fails includes: and determining the priority of the channel state information as high priority, wherein the priority of the channel state information corresponding to the configuration information is low priority.

In yet another possible implementation manner, the determining the priority of the channel state information when the downlink data decoding fails includes: and when the downlink data decoding fails, determining the priority of the channel state information as high priority.

In yet another possible implementation manner, the channel state information includes one or more of channel quality indication CQI information, rank indication RI information, precoding matrix indication PMI information, channel state information reference signal resource index CRI information, and interference information.

With regard to the technical effects brought about by the third aspect or the possible implementation manner, reference may be made to the description of the technical effects of the first aspect or the corresponding implementation manner.

A fourth aspect of the embodiments of the present application discloses a communication method, which may be performed by a network device or a chip in the network device, the method including:

transmitting downlink data to the terminal equipment, wherein the downlink data is used for determining the priority of the channel state information when the terminal equipment fails to decode the downlink data, and the priority of the channel state information is used for determining whether to transmit the channel state information to the network equipment;

In a possible implementation, the priority of the channel state information is the same as the priority of the acknowledgement NACK.

In yet another possible implementation manner, first downlink control information DCI is sent to the terminal device, where the first downlink control information DCI is used to indicate the priority of the NACK.

In yet another possible implementation manner, the channel state information is semi-permanent channel state information SP-CSI, which is determined by the terminal device according to the configuration information, and second downlink control information DCI is sent to the terminal device, where the second DCI is used to indicate a priority of the semi-permanent channel state information SP-CSI.

In yet another possible implementation manner, the channel state information is aperiodic channel state information a-CSI, which is determined by the terminal device according to the configuration information, and third downlink control information DCI is sent to the terminal device, where the third DCI is used to indicate a priority of the aperiodic channel state information a-CSI.

In yet another possible implementation manner, the channel state information is periodic channel state information P-CSI, and the priority of the periodic channel state information P-CSI is low, which is determined by the terminal device according to the configuration information.

In yet another possible implementation, the channel state information is semi-permanent channel state information SP-CSI, which is determined by the terminal device according to the configuration information, and a medium access control element MAC CE is sent to the terminal device, where the MAC CE is used to activate the configuration information, and the priority of the semi-permanent channel state information SP-CSI is low.

In yet another possible implementation manner, the priority of the channel state information is a high priority, where the priority of the channel state information corresponding to the configuration information is a low priority.

With regard to the technical effects brought about by the fourth aspect or the possible implementation manner, reference may be made to the description of the technical effects of the second aspect or the corresponding implementation manner.

A fifth aspect of the embodiments of the present application discloses a communication method, which may be performed by a terminal device or a chip in the terminal device, the method including:

receiving downlink data from a network device;

when the downlink data decoding fails and the negative acknowledgement NACK meets a third condition, sending channel state information or an uplink reference signal to the network equipment;

and sending a negative acknowledgement NACK to the network equipment, wherein the negative acknowledgement NACK is used for indicating the failure of decoding the downlink data.

In the above method, the transmission of the channel state information or the uplink reference signal is triggered only when the NACK satisfies the third condition, so that the overhead can be further reduced.

In one possible implementation, the method further includes: receiving first configuration information from the network device; and when the downlink data decoding fails and the negative acknowledgement NACK meets a third condition, sending channel state information or an uplink reference signal to the network device, including: and when the downlink data decoding fails and the negative acknowledgement NACK meets a third condition, sending the channel state information or the uplink reference signal to the network equipment according to the first configuration information.

In the method, the terminal equipment can quickly feed back the channel state information or the uplink reference signal to the network equipment according to the first configuration information, so that the cost is reduced, and the communication performance is ensured.

In yet another possible implementation manner, the third condition is that the first information of the negative acknowledgement NACK is a fifth state.

In yet another possible implementation manner, the third condition is that the first information of the negative acknowledgement NACK is in a sixth state, and the negative acknowledgement NACK occurs K times consecutively, where K is a positive integer.

In a further possible implementation, the K is configured by the network device to the terminal device or predefined.

In yet another possible implementation, the fifth state is high priority.

In yet another possible implementation, the sixth state is low priority.

In the above method, the transmission of the supported reference signal and the feedback of the channel state information should be different for different traffic types. For example, for URLLC traffic, channel state information feedback may require fast feedback, and the channel state information is preferably narrowband information. For the eMBB service, the need for fast feedback is not high. When the downlink data decoding fails and the negative acknowledgement NACK meets the third condition, the terminal equipment sends channel state information or an uplink reference signal to the network equipment, and in this way, high-priority services, such as URLLC services, can be guaranteed to be fed back quickly, overhead is reduced, and communication performance is guaranteed.

In yet another possible implementation manner, the channel state information includes channel quality indication CQI information or interference information, and the method further includes: and measuring the Channel Quality Indication (CQI) information and/or interference information, and not measuring the Rank Indication (RI) information and the Precoding Matrix Indication (PMI) information. In this way, the terminal device only needs to measure CQI information and/or interference information, and does not need to measure other information, so that the terminal device can more quickly feed back channel state information.

A sixth aspect of the embodiments of the present application discloses a communication method, which may be performed by a network device or a chip in the network device, the method including:

the downstream data is sent to the terminal device,

receiving channel state information or an uplink reference signal sent by the terminal equipment under the condition that the decoding of the downlink data fails and negative acknowledgement NACK meets a third condition;

In the method, the terminal equipment is triggered to send the channel state information or the uplink reference signal to the network equipment only when the NACK meets the third condition, so that the cost can be further reduced.

In one possible implementation, the method further includes:

sending first configuration information to the terminal equipment; receiving channel state information or an uplink reference signal sent by the terminal device when decoding the downlink data fails and a negative acknowledgement NACK meets a third condition, including: and receiving channel state information or an uplink reference signal sent according to the first configuration information when the terminal equipment fails to decode the downlink data and the negative acknowledgement NACK meets a third condition.

In yet another possible implementation, the fifth state is high priority.

In yet another possible implementation, the sixth state is low priority.

A seventh aspect of the embodiments of the present application discloses a communication method, which may be performed by a terminal device or a chip in the terminal device, the method including:

receiving at least two configuration information from a network device;

receiving downlink data from the network device;

when the downlink data decoding fails, sending channel state information or an uplink reference signal to the network equipment according to first configuration information; the first configuration information is one of the at least two configuration information, and the first information corresponding to the first configuration information is identical to the first information of the negative acknowledgement NACK;

In the method, different service types correspond to different configuration information, for example, for a service with a high priority, such as a URLLC service, the resources configured by the corresponding configuration information can be relatively dense, and for a service with a low priority, such as an eMBB service, the resources configured by the corresponding configuration information can be relatively sparse, and by means of distinguishing the resources configured by the configuration information, the communication performance can be ensured, and meanwhile, the method is better suitable for the requirements of different services.

In one possible implementation manner, the first information is priority information or is used to indicate a service type corresponding to the first configuration information.

In yet another possible implementation manner, fourth downlink control information DCI from the network device is received, where the fourth DCI is used to indicate the first information of the negative acknowledgement NACK.

In yet another possible implementation manner, first information corresponding to the first configuration information is received; and/or receiving first information corresponding to the second configuration information; the second configuration information is one of the at least two configuration information, and the first information corresponding to the first configuration information is different from the first information corresponding to the second configuration information.

In yet another possible implementation, a downlink reference signal from the network device is received, the downlink reference signal being used to measure the channel state information.

In yet another possible implementation manner, the channel state information is determined according to a demodulation reference signal DMRS of the downlink data.

An eighth aspect of the embodiments of the present application discloses a communication method, which may be performed by a network device or a chip in the network device, the method including:

Transmitting at least two configuration information to the terminal equipment;

transmitting downlink data to the terminal equipment;

receiving channel state information or an uplink reference signal sent by the terminal equipment according to first configuration information under the condition that the downlink data decoding fails; the first configuration information is one of the at least two configuration information, and the first information corresponding to the first configuration information is identical to the first information of the negative acknowledgement NACK;

In yet another possible implementation manner, a fourth downlink control information DCI is sent to the terminal device, where the fourth DCI is used to indicate the first information of the negative acknowledgement NACK.

In another possible implementation manner, first information corresponding to the first configuration information is sent to the terminal device; and/or sending first information corresponding to second configuration information to the terminal equipment, wherein the second configuration information is one of the at least two configuration information, and the first information corresponding to the first configuration information is different from the first information corresponding to the second configuration information.

In yet another possible implementation manner, a downlink reference signal is sent to the terminal device, where the downlink reference signal is used to measure the channel state information.

A ninth aspect of the embodiment of the present application discloses a terminal device, including:

a communication unit for receiving configuration information from a network device;

the communication unit is further configured to receive downlink data from the network device;

a processing unit, configured to determine first information of channel state information in case of failure of the downlink data decoding, where the first information of channel state information is used to determine whether to send the channel state information to the network device, and the channel state information is determined according to the configuration information;

the communication unit is further configured to send a negative acknowledgement NACK to the network device, where the negative acknowledgement NACK is used to indicate that the downlink data decoding fails.

In yet another possible implementation manner, the communication unit is further configured to receive first downlink control information DCI from the network device, where the first downlink control information DCI is used to indicate the first information of the negative acknowledgement NACK.

In a further possible implementation manner, the processing unit is further configured to determine, according to the configuration information, first information of the channel state information.

In a further possible implementation manner, the processing unit is further configured to determine, according to the configuration information, that the channel state information is semi-permanent channel state information SP-CSI; the communication unit is further configured to receive second downlink control information DCI from the network device, where the second DCI is used to indicate the first information of the SP-CSI.

In yet another possible implementation manner, the processing unit is further configured to determine, according to the configuration information, that the channel state information is aperiodic channel state information a-CSI; the communication unit is further configured to receive third downlink control information DCI from the network device, where the third DCI is used to indicate first information of the aperiodic channel state information a-CSI.

In yet another possible implementation manner, the processing unit is further configured to determine, according to the configuration information, that the channel state information is periodic channel state information P-CSI, where first information of the periodic channel state information P-CSI is a first state.

In a further possible implementation manner, the processing unit is further configured to determine, according to the configuration information, that the channel state information is semi-permanent channel state information SP-CSI; the communication unit is further configured to receive a medium access control element MAC CE from the network device; in case that the MAC CE is used to activate the configuration information, the first information of the semi-permanent channel state information SP-CSI is a first state.

In yet another possible implementation manner, the processing unit is further configured to determine that the first information of the channel state information is a second state, where the first information of the channel state information corresponding to the configuration information is the first state.

In yet another possible implementation manner, the processing unit is further configured to determine that the first information of the channel state information is the second state in a case where the downlink data decoding fails.

In yet another possible implementation, the first state is low priority.

In yet another possible implementation, the second state is high priority.

Regarding the technical effects brought about by the ninth aspect or the possible implementation manner, reference may be made to the description of the technical effects of the first aspect or the corresponding implementation manner.

A tenth aspect of the embodiments of the present application discloses a network device, including:

the processing unit is used for sending configuration information to the terminal equipment through the communication unit, wherein the configuration information is used for determining channel state information by the terminal equipment;

the processing unit is further configured to send downlink data to the terminal device through the communication unit, where the downlink data is used to determine first information of the channel state information when the terminal device fails to decode the downlink data, and the first information of the channel state information is used by the terminal device to determine whether to send the channel state information;

the communication unit is further configured to receive a negative acknowledgement NACK from the terminal device, where the negative acknowledgement NACK is used to indicate that the terminal device fails to decode the downlink data.

In one possible implementation, the first information of the channel state information is the same as the first information of the negative acknowledgement NACK.

In a further possible implementation manner, the communication unit is further configured to send first downlink control information DCI to the terminal device, where the first downlink control information DCI is used to indicate the first information of the negative acknowledgement NACK.

In yet another possible implementation manner, the channel state information is semi-permanent channel state information SP-CSI, which is determined by the terminal device according to the configuration information, and the communication unit is further configured to send second downlink control information DCI to the terminal device, where the second DCI is used to indicate first information of the semi-permanent channel state information SP-CSI.

In yet another possible implementation manner, the channel state information is aperiodic channel state information a-CSI, which is determined by the terminal device according to the configuration information, and the communication unit is further configured to send third downlink control information DCI to the terminal device, where the third DCI is used to indicate first information of the aperiodic channel state information a-CSI.

In a further possible implementation, the channel state information is semi-permanent channel state information SP-CSI, which is determined by the terminal device according to the configuration information, and the communication unit is further configured to send a medium access control element MAC CE to the terminal device, where the MAC CE is configured to activate the configuration information, and the first information of the semi-permanent channel state information SP-CSI is the first state.

In yet another possible implementation, the first state is low priority.

In yet another possible implementation, the second state is high priority.

With regard to the technical effects brought about by the tenth or possible implementation manner, reference may be made to the description of the technical effects of the second or corresponding implementation manner.

An eleventh aspect of the embodiment of the present application discloses a terminal device, including:

the processing unit is used for receiving downlink data from the network equipment through the communication unit;

a communication unit configured to send channel state information or an uplink reference signal to the network device in a case where the downlink data decoding fails and a negative acknowledgement NACK satisfies a third condition,

In a possible implementation manner, the communication unit is further configured to receive first configuration information from the network device; and the processing unit is configured to send the channel state information or the uplink reference signal to the network device according to the first configuration information when the downlink data decoding fails and the negative acknowledgement NACK meets a third condition.

In yet another possible implementation, the fifth state is high priority.

In yet another possible implementation, the sixth state is low priority.

In a further possible implementation manner, the channel state information includes channel quality indication CQI information or interference information, and the processing unit is further configured to measure the channel quality indication CQI information and/or the interference information, and not measure rank indication RI information and precoding matrix indication PMI information.

Regarding the technical effects brought about by the eleventh aspect or the possible implementation manner, reference may be made to the description of the technical effects of the fifth aspect or the corresponding implementation manner.

A twelfth aspect of an embodiment of the present application discloses a network device, including:

a processing unit for transmitting the downlink data to the terminal device through the communication unit,

the communication unit is configured to receive, from the terminal device, channel state information or an uplink reference signal that is sent when decoding of the downlink data fails and a negative acknowledgement NACK meets a third condition;

In a possible implementation manner, the communication unit is further configured to send first configuration information to the terminal device; the communication unit is further configured to receive channel state information or an uplink reference signal sent according to the first configuration information when the terminal device fails to decode the downlink data and a negative acknowledgement NACK satisfies a third condition.

In yet another possible implementation, the fifth state is high priority.

In yet another possible implementation, the sixth state is low priority.

With regard to the technical effects brought about by the twelfth aspect or the possible implementation manner, reference may be made to the description of the technical effects of the sixth aspect or the corresponding implementation manner.

A thirteenth aspect of the embodiment of the present application discloses a terminal device, including:

a processing unit for receiving at least two configuration information from the network device through the communication unit;

the communication unit is used for receiving downlink data from the network equipment;

The communication unit is further configured to send channel state information or an uplink reference signal to the network device according to first configuration information when the downlink data decoding fails; the first configuration information is one of the at least two configuration information, and the first information corresponding to the first configuration information is identical to the first information of the negative acknowledgement NACK;

In yet another possible implementation manner, the communication unit is further configured to receive fourth downlink control information DCI from the network device, where the fourth DCI is used to indicate the first information of the negative acknowledgement NACK.

In another possible implementation manner, the communication unit is further configured to receive first information corresponding to the first configuration information; and/or receiving first information corresponding to the second configuration information; the second configuration information is one of the at least two configuration information, and the first information corresponding to the first configuration information is different from the first information corresponding to the second configuration information.

In yet another possible implementation manner, the communication unit is further configured to receive a downlink reference signal from the network device, where the downlink reference signal is used to measure the channel state information.

Regarding the technical effects brought about by the thirteenth aspect or the possible implementation manner, reference may be made to the description of the technical effects of the seventh aspect or the corresponding implementation manner.

A fourteenth aspect of an embodiment of the present application discloses a network device, including:

The processing unit is used for sending at least two pieces of configuration information to the terminal equipment through the communication unit;

the communication unit is used for sending downlink data to the terminal equipment;

the communication unit is further configured to receive channel state information or an uplink reference signal sent according to the first configuration information from the terminal device when the downlink data decoding fails; the first configuration information is one of the at least two configuration information, and the first information corresponding to the first configuration information is identical to the first information of the negative acknowledgement NACK;

In yet another possible implementation manner, the communication unit is further configured to send fourth downlink control information DCI to the terminal device, where the fourth DCI is used to indicate the first information of the negative acknowledgement NACK.

In another possible implementation manner, the communication unit is further configured to send first information corresponding to the first configuration information to the terminal device; or sending first information corresponding to second configuration information to the terminal equipment, wherein the second configuration information is one of the at least two configuration information, and the first information corresponding to the first configuration information is different from the first information corresponding to the second configuration information.

In yet another possible implementation manner, the communication unit is further configured to send a downlink reference signal to the terminal device, where the downlink reference signal is used to measure the channel state information.

Regarding the technical effects brought about by the fourteenth aspect or the possible implementation manner, reference may be made to the description of the technical effects of the eighth aspect or the corresponding implementation manner.

A fifteenth aspect of the embodiments of the present application discloses a terminal device, including at least one processor and a transceiver, wherein the at least one processor is configured to communicate with other devices through the transceiver, the memory is configured to store a computer program, and the processor invokes the computer program to perform the following operations:

receiving, by the transceiver, configuration information from a network device;

Receiving, by the transceiver, downstream data from the network device;

and sending a negative acknowledgement NACK to the network equipment through the transceiver, wherein the negative acknowledgement NACK is used for indicating the failure of the downlink data decoding.

In yet another possible implementation, the processor is further configured to receive, by the transceiver, first downlink control information DCI from the network device, where the first downlink control information DCI is used to indicate the first information of the negative acknowledgement NACK.

In yet another possible implementation manner, the processor is further configured to determine, according to the configuration information, first information of the channel state information.

In yet another possible implementation, the processor is further configured to determine, according to the configuration information, that the channel state information is semi-permanent channel state information SP-CSI; and receiving second Downlink Control Information (DCI) from the network equipment through the transceiver, wherein the second DCI is used for indicating the first information of the SP-CSI.

In yet another possible implementation manner, the processor is further configured to determine, according to the configuration information, that the channel state information is aperiodic channel state information a-CSI; and receiving third Downlink Control Information (DCI) from the network equipment through the transceiver, wherein the third DCI is used for indicating first information of the aperiodic channel state information (A-CSI).

In yet another possible implementation manner, the processor is further configured to determine, according to the configuration information, that the channel state information is periodic channel state information P-CSI, where first information of the periodic channel state information P-CSI is a first state.

In yet another possible implementation, the processor is further configured to determine, according to the configuration information, that the channel state information is semi-permanent channel state information SP-CSI; receiving, by the transceiver, a medium access control element, MAC CE, from the network device; in case that the MAC CE is used to activate the configuration information, the first information of the semi-permanent channel state information SP-CSI is a first state.

In yet another possible implementation manner, the processor is further configured to determine that the first information of the channel state information is a second state, where the first information of the channel state information corresponding to the configuration information is the first state.

In yet another possible implementation manner, the processor is further configured to determine that the first information of the channel state information is the second state when the downlink data decoding fails.

In yet another possible implementation, the first state is low priority.

In yet another possible implementation, the second state is high priority.

With regard to the technical effects brought about by the fifteenth aspect or the possible implementation manner, reference may be made to the description of the technical effects of the first aspect or the corresponding implementation manner.

A sixteenth aspect of the embodiments of the present application discloses a network device, including at least one processor and a transceiver, wherein the at least one processor is configured to communicate with other devices through the transceiver, the memory is configured to store a computer program, and the processor invokes the computer program to perform the following operations:

Transmitting configuration information to a terminal device through the transceiver, wherein the configuration information is used for determining channel state information by the terminal device;

transmitting downlink data to the terminal equipment through the transceiver, wherein the downlink data is used for determining first information of the channel state information when the terminal equipment fails to decode the downlink data, and the first information of the channel state information is used for determining whether to transmit the channel state information or not by the terminal equipment;

and receiving a negative acknowledgement NACK from the terminal equipment through the transceiver, wherein the negative acknowledgement NACK is used for indicating the failure of decoding the downlink data.

In yet another possible implementation manner, the processor is further configured to send, to the terminal device through the transceiver, first downlink control information DCI, where the first downlink control information DCI is used to indicate the first information of the negative acknowledgement NACK.

In yet another possible implementation manner, the channel state information is semi-permanent channel state information SP-CSI, which is determined by the terminal device according to the configuration information, and the processor is further configured to send, to the terminal device, second downlink control information DCI through the transceiver, where the second DCI is used to indicate first information of the semi-permanent channel state information SP-CSI.

In yet another possible implementation manner, the channel state information is aperiodic channel state information a-CSI, which is determined by the terminal device according to the configuration information, and the processor is further configured to send, through the transceiver, third downlink control information DCI to the terminal device, where the third DCI is used to indicate first information of the aperiodic channel state information a-CSI.

In yet another possible implementation, the channel state information is semi-permanent channel state information SP-CSI, which is determined by the terminal device according to the configuration information, and the processor is further configured to send a medium access control element MAC CE to the terminal device through the transceiver, where the MAC CE is used to activate the configuration information, the first information of the semi-permanent channel state information SP-CSI is the first state.

In yet another possible implementation, the first state is low priority.

In yet another possible implementation, the second state is high priority.

With regard to the technical effects brought about by the sixteenth aspect or the possible implementation manner, reference may be made to the description of the technical effects of the second aspect or the corresponding implementation manner.

A seventeenth aspect of the embodiments of the present application discloses a terminal device, including at least one processor and a transceiver, where the at least one processor is configured to communicate with other devices through the transceiver, and the memory is configured to store a computer program, and the processor invokes the computer program to perform the following operations:

receiving downlink data from a network device through the transceiver;

transmitting, by the transceiver, channel state information or an uplink reference signal to the network device if the downlink data decoding fails and a negative acknowledgement NACK satisfies a third condition;

In one possible implementation, the processor is further configured to receive, through the transceiver, first configuration information from the network device; and if the downlink data decoding fails and the negative acknowledgement NACK meets a third condition, sending the channel state information or the uplink reference signal to the network equipment according to the first configuration information.

In yet another possible implementation, the fifth state is high priority.

In yet another possible implementation, the sixth state is low priority.

In yet another possible implementation, the channel state information includes channel quality indication CQI information or interference information, and the processor is further configured to measure the channel quality indication CQI information and/or interference information without measuring rank indication RI information and precoding matrix indication PMI information.

Regarding the technical effects brought about by the seventeenth aspect or the possible implementation manner, reference may be made to the description of the technical effects of the fifth aspect or the corresponding implementation manner.

An eighteenth aspect of the embodiments of the present application discloses a network device, including at least one processor and a transceiver, wherein the at least one processor is configured to communicate with other devices through the transceiver, the memory is configured to store a computer program, and the processor invokes the computer program to perform the following operations:

transmitting downstream data to the terminal device via the transceiver,

receiving, by the transceiver, channel state information or an uplink reference signal transmitted from the terminal device when decoding the downlink data fails and a negative acknowledgement NACK satisfies a third condition;

And receiving a negative acknowledgement NACK from the terminal equipment through the transceiver, wherein the negative acknowledgement NACK is used for indicating that the terminal equipment fails to decode the downlink data.

In a possible implementation manner, the processor is further configured to send, through the transceiver, first configuration information to the terminal device; and receiving channel state information or an uplink reference signal sent according to the first configuration information when the terminal equipment fails to decode the downlink data and the negative acknowledgement NACK meets a third condition.

In yet another possible implementation, the fifth state is high priority.

In yet another possible implementation, the sixth state is low priority.

Regarding the technical effects brought about by the eighteenth aspect or the possible implementation manner, reference may be made to the description of the technical effects of the sixth aspect or the corresponding implementation manner.

A nineteenth aspect of the embodiments of the present application discloses a terminal device, including at least one processor and a transceiver, where the at least one processor is configured to communicate with other devices through the transceiver, and the memory is configured to store a computer program, and the processor invokes the computer program to perform the following operations:

receiving, by the transceiver, at least two configuration information from a network device;

receiving, by the transceiver, downstream data from the network device;

transmitting channel state information or an uplink reference signal to the network device according to first configuration information under the condition that the downlink data decoding fails through the transceiver; the first configuration information is one of the at least two configuration information, and the first information corresponding to the first configuration information is identical to the first information of the negative acknowledgement NACK;

In yet another possible implementation manner, the processor is further configured to receive, through the transceiver, fourth downlink control information DCI from the network device, where the fourth DCI is used to indicate the first information of the negative acknowledgement NACK.

In yet another possible implementation manner, the processor is further configured to receive, through the transceiver, first information corresponding to the first configuration information; and/or receiving first information corresponding to the second configuration information; the second configuration information is one of the at least two configuration information, and the first information corresponding to the first configuration information is different from the first information corresponding to the second configuration information.

In yet another possible implementation, the processor is further configured to receive, by the transceiver, a downlink reference signal from the network device, where the downlink reference signal is used to measure the channel state information.

Regarding the technical effects brought about by the nineteenth aspect or the possible implementation manner, reference may be made to the description of the technical effects of the seventh aspect or the corresponding implementation manner.

A twentieth aspect of the embodiments of the present application discloses a network device comprising at least one processor and a transceiver, wherein the at least one processor is configured to communicate with other devices through the transceiver, the memory is configured to store a computer program, and the processor invokes the computer program to perform the following operations:

transmitting at least two configuration information to a terminal device through the transceiver;

transmitting downlink data to the terminal equipment through the transceiver;

receiving, by the transceiver, channel state information or an uplink reference signal sent according to first configuration information from the terminal device when the downlink data decoding fails; the first configuration information is one of the at least two configuration information, and the first information corresponding to the first configuration information is identical to the first information of the negative acknowledgement NACK;

And receiving the negative acknowledgement NACK from the terminal equipment through the transceiver, wherein the negative acknowledgement NACK is used for indicating that the terminal equipment fails to decode the downlink data.

In yet another possible implementation manner, the processor is further configured to send fourth downlink control information DCI to the terminal device through the transceiver, where the fourth DCI is used to indicate the first information of the negative acknowledgement NACK.

In yet another possible implementation manner, the processor is further configured to send, through the transceiver, first information corresponding to first configuration information to the terminal device; or sending first information corresponding to second configuration information to the terminal equipment, wherein the second configuration information is one of the at least two configuration information, and the first information corresponding to the first configuration information is different from the first information corresponding to the second configuration information.

In yet another possible implementation manner, the processor is further configured to send, through the transceiver, a downlink reference signal to the terminal device, where the downlink reference signal is used to measure the channel state information.

Regarding the technical effects brought about by the twentieth aspect or the possible implementation manner, reference may be made to the description of the technical effects of the eighth aspect or the corresponding implementation manner.

A twenty-first aspect of the present embodiment discloses a computer-readable storage medium having instructions stored therein, which when run on a computer, cause the computer to perform the methods of the above aspects.

A twenty-second aspect of the embodiments of the present application discloses a computer program product which, when run on a computer, causes the computer to perform the methods of the above aspects.

Drawings

Fig. 1 is a schematic structural diagram of a communication system according to an embodiment of the present application;

fig. 2 is a schematic diagram of periodic channel state information P-CSI according to an embodiment of the present application;

fig. 3 is a schematic diagram of semi-permanent channel state information SP-CSI provided in an embodiment of the present application;

Fig. 4 is a schematic diagram of aperiodic channel state information a-CSI provided in an embodiment of the present application;

fig. 5 is a schematic diagram of a channel state information-reference signal reporting configuration provided in an embodiment of the present application;

fig. 6 is a schematic diagram of a channel state information resource configuration according to an embodiment of the present application;

fig. 7 is a schematic diagram of a non-zero power channel state information-reference signal resource set according to an embodiment of the present application;

fig. 8 is a schematic diagram of a non-zero power channel state information-reference signal resource according to an embodiment of the present application;

fig. 9 is a schematic diagram of a channel state information-interference measurement resource set provided in an embodiment of the present application;

fig. 10 is a schematic flow chart of a communication method according to an embodiment of the present application;

fig. 11 is a schematic diagram of overlapping time-frequency resources according to an embodiment of the present application;

fig. 12 is a schematic diagram of overlapping time-frequency resources according to another embodiment of the present application;

fig. 13 is a schematic diagram of overlapping time-frequency resources according to another embodiment of the present application;

fig. 14 is a schematic diagram of transmitting channel state information and fifth information in a first time-frequency resource according to an embodiment of the present application;

FIG. 15 is a flow chart of yet another communication method provided in an embodiment of the present application;

FIG. 16 is a flow chart of yet another communication method provided in an embodiment of the present application;

fig. 17 is a schematic diagram of transmitting channel state information according to an embodiment of the present application;

FIG. 18 is a flow chart of yet another communication method provided in an embodiment of the present application;

fig. 19 is a schematic structural diagram of a terminal device provided in an embodiment of the present application;

fig. 20 is a schematic structural diagram of a terminal device provided in an embodiment of the present application;

fig. 21 is a schematic structural diagram of a terminal device provided in an embodiment of the present application;

fig. 22 is a schematic structural diagram of a terminal device according to an embodiment of the present application.

Detailed Description

Embodiments of the present application are described below with reference to the accompanying drawings in the embodiments of the present application.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a communication system 1000 according to an embodiment of the present invention, where the communication system 1000 may include a network device 1007 and a terminal device 1001, a terminal device 1002, a terminal device 1003, a terminal device 1004, a terminal device 1005, and a terminal device 1006. It should be understood that more or fewer network devices or terminal devices may be included in communication system 100 to which the methods of embodiments of the present application may be applied. The network device and the terminal device may be hardware, or may be functionally divided software, or a combination of both. Communication between the network device and the terminal device may be through other devices or network elements. The method in the embodiment of the present application may be applied to the communication system 1000 shown in fig. 1.

1) Terminal devices, including devices that provide voice and/or data connectivity to a user, specifically, devices that provide voice to a user, or devices that provide data connectivity to a user, or devices that provide voice and data connectivity to a user. For example, may include a handheld device having wireless connectivity, or a processing device connected to a wireless modem. The terminal device may communicate with the core network via a radio access network (radio access network, RAN), exchange voice or data with the RAN, or interact voice and data with the RAN. The terminal device may include a User Equipment (UE), a wireless terminal device, a mobile terminal device, a device-to-device (D2D) terminal device, a vehicle-to-all (vehicle to everything, V2X) terminal device, a machine-to-machine/machine-type communication (M2M/MTC) terminal device, an internet of things (internet of things, ioT) terminal device, a lightweight terminal device (light UE), a reduced capability user device (reduced capability UE, a REDCAP UE), a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile station), a remote station (remote station), an Access Point (AP), a remote terminal (remote terminal), an access terminal (user agent), a user agent (user device), or a user equipment (user device), etc. For example, mobile telephones (or "cellular" telephones) computers with mobile terminal devices, portable, pocket, hand-held, computer-built mobile devices, and the like may be included. Such as personal communication services (personal communication service, PCS) phones, cordless phones, session initiation protocol (session initiation protocol, SIP) phones, wireless local loop (wireless local loop, WLL) stations, personal digital assistants (personal digital assistant, PDAs), and the like. But also limited devices such as devices with lower power consumption, or devices with limited memory capabilities, or devices with limited computing capabilities, etc. Examples include bar codes, radio frequency identification (radio frequency identification, RFID), sensors, global positioning systems (global positioning system, GPS), laser scanners, and other information sensing devices.

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

While the various terminal devices described above, if located on a vehicle (e.g., placed in a vehicle or mounted in a vehicle), may be considered as in-vehicle terminal devices, for example, also referred to as in-vehicle units (OBUs).

In the embodiment of the application, the terminal device may further include a relay (relay). Or it is understood that all that is capable of data communication with a base station can be seen as a terminal device.

2) A network device, for example comprising AN Access Network (AN) device, such as a base station (e.g. AN access point), may refer to a device in the access network that communicates over the air with a wireless terminal device through one or more cells, or a network device in a vehicle-to-infrastructure (V2X) technology, for example, is a Road Side Unit (RSU). The base station may be configured to inter-convert the received air frames with IP packets as a router between the terminal device and the rest of the access network, which may include an IP network. The RSU may be a fixed infrastructure entity supporting V2X applications, which may exchange messages with other entities supporting V2X applications. The network device may also coordinate attribute management for the air interface. For example, the network device may include an evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in a long term evolution (long term evolution, LTE) system or long term evolution advanced (long term evolution-advanced, LTE-a), or may also include a next generation NodeB (next generation node B, gNB) in a fifth generation mobile communication technology (the 5th generation,5G) NR system (also simply referred to as NR system) or may also include a Centralized Unit (CU) and a Distributed Unit (DU) in a Cloud access network (Cloud radio access network, cloud RAN) system, and embodiments of the present application are not limited.

First, some terms in this application are explained for easy understanding by those skilled in the art.

The measurement of channel and interference in NR systems is mainly performed by transmitting a Reference Signal (RS) of a known sequence. Channel state information or interference of a downlink channel is generally measured through a channel state information-reference signal (channel state information-reference signal, CSI-RS) in an NR system, and channel sounding reference signal (sounding reference signal, SRS) measures channel state information of an uplink channel. Of course, for a time division duplex (time division duplex, TDD) system, the channel states of the uplink and downlink are symmetrical. Accordingly, the terminal device may obtain the channel state of the uplink data transmission through the channel state of the downlink, or may obtain the channel state information of the downlink data transmission through the channel state information of the uplink. The embodiment of the application is mainly described with respect to downlink channel and interference measurement, but similar schemes can be adopted for uplink data channel measurement, and the description is omitted.

The downlink channel is typically measured by a channel state information-reference signal CSI-RS. The network device sends configuration information related to the CSI-RS to the terminal device, the terminal device receives the configuration information related to the CSI-RS, then the network device sends the CSI-RS to the terminal device, the CSI-RS is used for measuring channels and interference by the terminal device, after the terminal device receives the CSI-RS, indexes needing to be measured, such as Rank Indicator (RI) information, precoding matrix indicator (pre-coding matrix indicator, PMI) information and channel quality indicator (channel quantity indicator, CQI) information, are calculated according to the received CSI-RS, and then channel state information is reported according to the configuration information related to the CSI-RS. The CSI-RS related configuration information includes a channel state information-reference signal reporting configuration (CSI-RS ReportConfig) and a channel state information-reference signal resource configuration (CSI-RS ResourceConfig), where the CSI-RS ReportConfig is used to configure parameters related to channel reporting, such as a type of channel state reporting, a reported measurement index, and CSI-RS ResourceConfig is used to configure related information of a measured time-frequency resource.

The types of channel state reporting can be classified into 3 types, periodic channel state information (periodic channel state information, P-CSI), semi-permanent channel state information (semipersistent channel state information, SP-CSI), and aperiodic channel state information (aperiodic channel state information, a-CSI). As shown in fig. 2, fig. 2 shows a schematic diagram of periodic channel state information P-CSI. The P-CSI is radio resource control (radio resource control, RRC) configured, periodically transmitted, and no triggers are required after configuration. The network device sends configuration information to the terminal device, the configuration information does not need to be activated, then the network device periodically sends the CSI-RS to the terminal device, correspondingly, the terminal device periodically receives the CSI-RS, then the channel and the interference are measured according to the CSI-RS, and then the channel state information is reported. As shown in fig. 3, fig. 3 shows a schematic diagram of semi-permanent channel state information SP-CSI. The SP-CSI is related information configured by radio resource control (radio resource control, RRC) and cannot be used directly, requiring further triggering. The triggering may be triggered by a medium access control element (medium access control control element, MAC CE) or downlink control information (downlink control information, DCI), followed by a periodic transmission, the SP-CSI triggered by the MAC CE transmitting channel state information on (physical uplink control channel, PUCCH) and the SP-CSI triggered by the DCI transmitting channel state information on a physical uplink shared channel (physical downlink shared channel, PUSCH). As shown in fig. 4, fig. 4 shows a schematic diagram of aperiodic channel state information a-CSI, where a-CSI is DCI triggered, and channel state information is reported only once on a specified PUSCH after the triggering. In the embodiment of the present application, the meaning of the channel state information and the channel information is the same.

The reported measurement indexes can be rank indication RI information, precoding matrix indication PMI information, channel quality indication CQI information and the like, and the specific reported measurement indexes can be selected to be reported totally or only a part of the measurement indexes can be reported by configuring variables in ReportConfig.

The reporting of channel conditions also supports wideband feedback and narrowband feedback. For wideband feedback, it means that only one value is fed back in the entire reporting bandwidth, while narrowband feedback means that feedback is performed separately for each subband (subband). The size of each sub-band is specified in the existing protocol, and specifically, as shown in table 1, table 1 indicates the sub-band size specified in the existing protocol, and the number of physical resource blocks (physical resource block, PRBs) included in each sub-band is fixed for a fixed bandwidth part (BWP). For example, one BWP contains 50 PRBs, and its subband size is 4 or 8, and in particular which one can be specified by higher layer signaling. Moreover, for narrowband feedback, feedback may also be discrete or continuous.

Table 1

The resources configured by the CSI-RS configuration information may also be three, periodic, semi-permanent, and aperiodic. The channel state reporting type and the corresponding configuration mode of the measured time-frequency resource have a certain relation, and specifically, as shown in table 2, the table 2 shows the relation between the channel state reporting type and the resource configured by the CSI-RS configuration information. It can be seen from the table that for periodically configured resources, P-CSI reporting, SP-CSI reporting and a-CSI reporting may be supported, whereas for aperiodic resources, only a-CSI reporting is supported.

Table 2

The resources configured by the CSI-RS configuration information can be divided into three types from the functional point of view, namely, a non-zero power channel state information-reference signal (NZP-CSI-RS for channel) for channel measurement, a zero power channel state information-reference signal (ZP-CSI-RS for interference) for interference measurement, and a non-zero power channel state information-reference signal (NZP-CSI-RS for interference) for interference measurement, wherein the NZP-CSI-RS for channel represents the non-zero power channel state information-reference signal for channel measurement, and the resource configuration is optional; ZP-CSI-RS for interference represents zero-power channel state information-reference signals for interference measurement, the resource configuration is optional, and if the CSI-RS configuration information configures ZP-CSI-RS for interference, the resources in the resource set and the resources in the NZP-CSI-RS for channel resource set are in one-to-one correspondence; because the zero-power channel state information-reference signal (ZP-CSI-RS) is typically used to measure interference, it is also commonly referred to as channel state information-interference measurement (channel state information-interference measurement, CSI-IM). The distinction between zero-power channel state information-reference signals (ZP-CSI-RS), which means that the network device does not send any information on the configured resources on which the terminal device detects, and non-zero-power channel state information-reference signals (NZP-CSI-RS), which are detected signals are interference, is described below. The non-zero power channel state information-reference signal (NZP-CSI-RS) refers to a network device transmitting a known sequence on configured resources through which a terminal device gets a channel and/or interference.

Several parameters in a channel state information-reference signal reporting configuration (CSI-RS ReportConfig) will be described below, and as shown in fig. 5, fig. 5 shows a channel state information-reference signal reporting configuration (CSI-RS ReportConfig), where CSI-RS ReportConfig is used to configure parameters related to channel reporting, such as the type of channel state reporting, and the index of the reported measurement:

(1) The reporting configuration identification number (reportConfigId) refers to an identification number of the channel state information-reference signal reporting configuration for marking the channel state information-reference signal reporting configuration.

(2) Resources for channel measurement (resource eFonnelMessaurement) resources for channel measurement (CSI-RS) are configured, which are associated to the resource configuration by CSI-ResourceConfigId.

(3) Channel state information for interference measurement-interference measurement resources (CSI-IM-resources for interference) configure the resources of CSI-RS for interference measurement, to which the resource configuration is associated by CSI-ResourceConfigId, in the embodiment of the present application ZP-CSI-RS resources will also be used to describe the resources for measuring interference.

(4) Non-zero power channel state information-reference signal resource (NZP-CSI-RS-resource for interference) for interference measurement: the NZP-CSI-RS resources configured for interference measurement are associated to this resource configuration by CSI-ResourceConfigId.

(5) Report configuration type (reportConfigType): the type of reporting of the channel state may be classified into periodic reporting, semi-permanent reporting and aperiodic reporting.

(6) Report quality (reportquality): the reported measured indexes can be configured differently, and the terminal equipment can report different indexes including CRI, RI, PMI, CQI.

Several parameters in the channel state information resource configuration (CSI ResourceConfig) will be described below, as shown in fig. 6, fig. 6 shows the channel state information resource configuration (CSI ResourceConfig), and the related information of CSI ResourceConfig used to configure the measured time-frequency resources:

(1) Channel state information resource configuration identification number (csi-ResourceConfigId): the identification number ID of the CSI-ResourceConfig is used for marking the CSI-ResourceConfig and is related to the CSI-ReportConfig through the variable;

(2) Channel state information-queue of reference signal resource sets (csi-RS-resourcesist): a queue of resource combinations is configured, which may include a set of resources for channel measurements, a set of resources for interference measurements. Wherein the configuration of the resource sets is associated by a non-zero power channel state information-reference signal resource set identification number NZP-CSI-RS-ResourceSetId and/or a resource set identification number CSI-IM-ResourceSetId for channel state information-interference measurements. The main difference between the non-zero power channel state information-reference signal resource set NZP-CSI-RS-resource set and the resources configured in the channel state information-interference measurement resource set CSI-IM-resource set is that the CSI-RS of a known sequence is sent in the NZP-CSI-RS resources, and the channel or interference is measured through the CSI-RS of the known sequence; and the CSI-IM resource is also called ZP-CSI-RS resource, no information is sent on the resource, and the received information is interference.

(3) Type of resource (resourceType): may be divided into periodic (periodic) resources, semi-persistent (semi-persistent) resources, and aperiodic (aperiodic) resources.

Several parameters in the non-zero power channel state information-reference signal resource set (NZP-CSI-RS-resource set) will be described below, as shown in fig. 7, fig. 7 representing the non-zero power channel state information-reference signal resource set (NZP-CSI-RS-resource set). The NZP-CSI-RS-resource set is used to configure a CSI-RS resource set of non-zero power NZP, which may include at least one resource. The terminal device measures channel state information according to the resources and feeds back the channel state information. When there are multiple resources in one resource set, the terminal device specifically feeds back the channel state information measured on which resource, which is indicated by a variable of channel state information-reference signal resource indication information (channel state information-reference signal resource indicator, CRI) fed back by the terminal device, for example, cri=0, which indicates that the channel state information fed back by the terminal device is the channel state information measured on the resource id=0 in the resource set.

(1) Non-zero power channel state information resource set identification number (nzp-CSI-ResourceSetId): an identification number for identifying the non-zero power channel state information resource set.

(2) Non-zero power channel state information-reference signal Resources (nzp-CSI-RS-Resources): the Resources included in the set of Resources are associated to each NZP-CSI-RS resource by NZP-CSI-RS-resource id, as shown in fig. 8, and fig. 8 represents non-zero power channel state information-reference signal Resources (NZP-CSI-RS-Resources).

The channel state information-interference measurement resource set (CSI-IM-resource) configures a set of resources for measuring interference, as shown in fig. 9 in particular, fig. 9 shows the set of channel state information-interference measurement resources.

Channel state information-interference measurement resources (CSI-IM-resources) configure related information of resources for measuring interference, and are associated to CSI-IM-resources set through CSI-IM-resources id.

The priority of the different channel state information CSI reports will be described as follows:

(1) For periodic channel state information, P-CSI, the priority is low.

(2) For semi-permanent SP-CSI, triggering by the MAC CE, and sending the SP-CSI on the PUCCH with low priority; for the SP-CSI triggered by the DCI, the priority of the SP-CSI is consistent with the priority of the indication information in the DCI, the indication information in the DCI is high in priority, the indication information in the DCI is low in priority, and the indication information in the DCI is low in priority.

(3) For aperiodic a-CSI, the priority of the aperiodic a-CSI needs to be kept consistent with the priority of the indication information in the DCI, and the indication information in the DCI is high in priority and low in priority.

Ultra-reliable low-delay communication (URLLC) service is mainly used in the fields of unmanned driving, internet of vehicles, automatic factories, telemedicine and the like, and requires low time delay and high reliability.

The enhanced mobile broadband (enhanced Mobile Broadband, eMBB) service is mainly used for applications such as ultra-high definition time-frequency, holographic technology, augmented reality, virtual reality and the like, and has high requirements on network bandwidth and speed.

Embodiment one:

currently, when the resource for the terminal device to transmit the channel state information overlaps with the occurrence of the resource to transmit other data, how to transmit the channel state information and other data is a technical problem that is being solved by those skilled in the art. In general, the priority information is used to determine whether to transmit channel state information, or other data, or to multiplex channel state information with other data and then transmit the multiplexed channel state information. However, for transmission of channel state information corresponding to failure in decoding downlink data by a terminal device, how to determine the priority corresponding to the channel state information is an unsolved problem in the art, and therefore, the present embodiment proposes the following solution.

Referring to fig. 10, fig. 10 is a communication method provided in an embodiment of the present application, where the method includes:

step S1001: the network device sends configuration information to the terminal device.

Specifically, the configuration information may include one or more of a time-frequency resource position of downlink data, a time-frequency resource position of a downlink reference signal, a periodicity and a period of the downlink reference signal, and indication information of a time-frequency resource for transmitting channel state information by the terminal device. In one example, the downlink reference signal may be a channel state information-reference signal CSI-RS.

Step S1002: the terminal device receives configuration information from the network device.

Specifically, after receiving the configuration information, the terminal device may determine one or more of a time-frequency resource location of downlink data, a time-frequency resource location of a downlink reference signal, a periodicity of the downlink reference signal, and indication information of a time-frequency resource used for the terminal device to transmit channel state information according to the configuration information, that is, may determine, according to the configuration information, at which time-frequency resource location to receive downlink data, at which time-frequency resource location to receive the downlink reference signal, and determine a periodicity of downlink reference signal transmission, and determine one or more of a time-frequency resource used for transmitting channel state information.

Optionally, the channel state information is determined according to the configuration information. Optionally, the terminal device may determine, through the configuration information, specific parameters included in the channel state information, for example, one or more of CQI information, rank indication RI information, precoding matrix indication PMI information, channel state information reference signal resource index CRI information, and interference information. Optionally, the terminal device may determine the granularity of the frequency domain resource included in the channel state information through the configuration information, that is, the channel state information is wideband feedback or narrowband feedback.

Step S1003: and the network equipment sends the downlink data to the terminal equipment.

Specifically, the downlink data may be scheduled by downlink control information DCI, and the network device sends DCI to the terminal device, where the DCI is used to schedule the downlink data, and the downlink data may be PDSCH. Alternatively, the downlink data may be semi-persistent scheduling (semi-persistent scheduling, SPS), that is, the network device indicates, through DCI, current scheduling information of the terminal device during initial scheduling, and the terminal device identifies that the terminal device is semi-persistent scheduling, so that the terminal device maintains the current scheduling information, and then the network device may send downlink data to the terminal device at the same time-frequency resource location every fixed period, and correspondingly, the terminal device receives downlink data from the network device at the same time-frequency resource location every fixed period.

Step S1004: the terminal device receives downlink data from the network device.

Step S1005: when the downlink data decoding fails, the terminal device determines first information of channel state information.

Specifically, downlink data is scheduled through DCI, and downlink data decoding failure may refer to a PDCCH decoding error in the first case and a PDCCH decoding error in the second case. The first information may be priority information. The channel state information may be used for the network device to retransmit downstream data or to transmit new downstream data. The channel state information may include one or more of channel quality indication CQI information, rank indication RI information, precoding matrix indication PMI information, channel state information reference signal resource index CRI information, and interference information.

Optionally, the first information of the channel state information is used to determine whether to send the channel state information to the network device. As shown in fig. 11, when the time-frequency resource corresponding to the channel state information overlaps (overlap) with the time-frequency resource corresponding to the fourth information, it is determined whether to send the channel state information to the network device according to the first information of the channel state information and the first information corresponding to the fourth information. In one example, if the first information of the channel state information is in the third state and the first information corresponding to the fourth information is in the fourth state, the terminal device determines to send the channel state information to the network device. In yet another example, if the first information of the channel state information is in the fourth state and the first information corresponding to the fourth information is in the third state, the terminal device does not send the channel state information to the network device. In yet another example, the first information of the channel state information and the first information corresponding to the fourth information are the same, and the channel state information and the fourth information are multiplexed (multiplexed) and then transmitted. The first information may be priority information, the third state is high priority, and the fourth state is low priority.

Alternatively, multiplexing refers to transmitting channel state information and fourth information in one channel. Alternatively, when two or more pieces of information are multiplexed for transmission, the two or more pieces of information may be jointly encoded. The fourth information may be one or more of uplink data information, uplink acknowledgement ACK or negative acknowledgement NACK information, second channel state information, and scheduling request (scheduling request, SR) information. The second channel state information is other channel state information different from the channel state information.

In one example, the overlapping may be overlapping in time domains, and specifically, as shown in fig. 11, the overlapping in time domains refers to that the time domain resources corresponding to the two time-frequency resources are partially or completely identical. Alternatively, the time domain overlap may be that at least one symbol in the time domain resources corresponding to the two time-frequency resources is the same. The two time-frequency resources are respectively the time-frequency resource of the channel state information and the corresponding time-frequency resource of the fourth information. In yet another example, the overlapping may be overlapping frequency domains, and specifically, as shown in fig. 12, the overlapping frequency domains refers to that frequency domain resources corresponding to two time-frequency resources are partially or completely identical. The two time-frequency resources are the time-frequency resource of the channel state information and the time-frequency resource of the fourth information respectively.

Optionally, the first information of the channel state information is related to a first parameter of the channel state information. Wherein the first parameter may be one or more of the following parameters: the time-frequency resource corresponding to the channel state information, the indication information of the time-frequency resource corresponding to the channel state information, the coding rate of the channel state information, and the mapping sequence of the channel state information when mapping to the time-frequency resource. As shown in fig. 13, when the time-frequency resource of the channel state information overlaps with the time-frequency resource of the fifth information, the first parameter is determined by the first information.

In one example, when the first parameter is a time-frequency resource or indication information of the time-frequency resource, when two time-frequency resources overlap, channel state information and fifth information are transmitted in the first time-frequency resource. Specifically, if the first information of the channel state information is in the third state and the first information of the fifth information is in the fourth state, the first symbol of the time-frequency resource corresponding to the channel state information precedes the first symbol of the time-frequency resource corresponding to the fifth information, as shown in fig. 14.

In yet another example, when the first parameter is a coding rate of channel state information. When the two time-frequency resources overlap, the channel state information and the fifth information are multiplexed and then transmitted. And recoding the channel state information and fifth information, wherein the coding rate of the channel state information is R1, and the coding rate of the fifth information is R2. If the first information of the channel state information is in the third state and the first information of the fifth information is in the fourth state, R1 is larger than R2. If the first information of the channel state information is in the fourth state and the first information of the fifth information is in the third state, R1 is smaller than R2. If the first information of the channel state information and the first information of the fifth information are identical, R1 and R2 are equal.

In yet another example, when the first parameter is a mapping order in which channel state information is mapped to time-frequency resources. If the first information of the channel state information is in the third state and the first information of the fifth information is in the fourth state, the channel state information is mapped before the fifth information. If the first information of the channel state information is in the fourth state and the first information of the fifth information is in the third state, the fifth information is mapped to the time-frequency resource before the channel state information.

In one possible implementation manner, when the downlink data decoding fails, determining the first information of the channel state information includes: the first information of the channel state information is the same as the first information of the acknowledgement NACK.

Specifically, the first information may be priority information. The negative acknowledgement NACK is used to indicate that the downlink data decoding failed. That is, taking the first information as the priority information as an example, when the priority of the negative acknowledgement NACK is high, the priority of the channel state information is high; when the priority of the negative acknowledgement NACK is low, the priority of the channel state information is low.

In yet another possible implementation, the terminal device receives a first DCI from the network device, the first DCI being used for first information indicating a negative acknowledgement, NACK.

In one example, taking the first information as priority information as an example, the terminal device receives first DCI from the network device, where the first DCI is used to indicate that the priority of the negative acknowledgement NACK is a high priority. In yet another example, a terminal device receives a first DCI from a network device indicating that a negative acknowledgement, NACK, is low priority.

In one possible implementation, when the downlink data decoding fails, determining the first information of the channel state information includes: and determining first information of the channel state information according to the configuration information. Specifically, the first information may be priority information. Specifically, the first information for determining channel state information according to configuration information may include the following 4 cases:

case 1: and determining that the channel state information is periodic channel state information P-CSI according to the configuration information, wherein first information of the periodic channel state information P-CSI is a first state. Specifically, the first information may be priority information, and the first state may be low priority. In one example, taking the first information as priority information as an example, the terminal device determines that the channel state information is periodic channel state information P-CSI according to the configuration information, the priority of the P-CSI is low, and the terminal device determines that the priority of the channel state information is low. In one example, the configuration information may include indication information for indicating that the channel state information is periodic channel state information P-CSI. Alternatively, the indication information may be reportConfigType shown in fig. 5, and accordingly, the terminal device may determine that the channel state information is periodic channel state information P-CSI according to reportConfigType shown in fig. 5.

Case 2: determining channel state information as semi-permanent channel state information SP-CSI according to the configuration information; and receiving second Downlink Control Information (DCI) from the network equipment, wherein the second DCI is used for indicating the first information of the SP-CSI. Specifically, the first information may be priority information. In one example, taking the first information as priority information as an example, the terminal device determines that the channel state information is semi-permanent channel state information SP-CSI according to the configuration information, and the terminal device receives second downlink control information DCI from the network device, where the second DCI is used to indicate that the priority of the SP-CSI is high, and then the priority of the channel state information is high. In one example, indication information for indicating that the channel state information is semi-permanent channel state information SP-CSI may be included in the configuration information. Alternatively, the indication information may be reportConfigType shown in fig. 5, and accordingly, the terminal device may determine that the channel state information is semi-permanent channel state information SP-CSI according to reportConfigType shown in fig. 5.

Case 3: determining channel state information as semi-permanent channel state information SP-CSI according to the configuration information; receiving a medium access control element (MAC CE) from a network device; in case that the MAC CE is used to activate configuration information, the first information of the semi-permanent channel state information SP-CSI is the first state. Specifically, the first information may be priority information, and the first state may be low priority. In one example, taking the first information as priority information as an example, the terminal device determines that the channel state information is SP-CSI according to the configuration information, the terminal device receives a MAC CE from the network device, and if the MAC CE is used to activate the configuration information, the priority of the SP-CSI is low, and then the terminal device determines that the priority of the channel state information is low. In one example, indication information for indicating that the channel state information is semi-permanent channel state information SP-CSI may be included in the configuration information. Alternatively, the indication information may be corresponding to the reportConfigType shown in fig. 5, and the terminal device may determine that the channel state information is semi-permanent channel state information SP-CSI according to the reportConfigType shown in fig. 5.

Case 4: determining that the channel state information is aperiodic channel state information A-CSI according to the configuration information; and receiving third Downlink Control Information (DCI) from the network equipment, wherein the third DCI is used for indicating first information of the aperiodic channel state information (A-CSI). Specifically, the first information may be priority information. In an example, taking the first information as priority information as an example, the terminal device determines that the channel state information is aperiodic channel state information a-CSI according to the configuration information, and the terminal device receives third downlink control information DCI from the network device, where the third DCI is used to indicate that the priority of the SP-CSI is high, and then the priority of the channel state information is high. In one example, indication information may be included in the configuration information, the indication information being used to indicate that the channel state information is aperiodic channel state information a-CSI. Alternatively, the indication information may be reportConfigType shown in fig. 5, and accordingly, the terminal device may determine that the channel state information is aperiodic channel state information a-CSI according to reportConfigType shown in fig. 5.

In yet another possible implementation manner, when the downlink data decoding fails, determining the first information of the channel state information includes: the terminal equipment determines the first information of the channel state information to be in a second state, wherein the first information of the channel state information corresponding to the configuration information is in the first state. Specifically, the first information may be priority information, the second state may be high priority, and the first state is low priority.

In one example, taking the first information as priority information, the first state is low priority, the second state is high priority, for example, the terminal device determines that the channel state information corresponding to the configuration information is periodic channel state information P-CSI, and the priority of the periodic channel state information P-CSI is low priority, where the priority of the channel state information is high priority due to the channel state information being triggered by NACK. In yet another example, the terminal device determines that the channel state information corresponding to the configuration information is semi-permanent channel state information SP-CSI, and in case that the medium access control element MAC CE is used to activate the configuration information, the priority of the semi-permanent channel state information SP-CSI corresponding to the configuration information is low priority, at which time, since the channel state information is triggered by NACK, the terminal device determines that the priority of the channel state information is high priority. In yet another example, the terminal device determines that the channel state information corresponding to the configuration information is semi-permanent channel state information SP-CSI, and in case that the second DCI is used to activate the configuration information, the second DCI indicates that the priority of the SP-CSI is low priority, and then the priority of the semi-permanent channel state information SP-CSI corresponding to the configuration information is low priority, at this time, since the channel state information is triggered by NACK, the terminal device determines that the priority of the channel state information is high priority. In yet another example, the terminal device determines that the channel state information corresponding to the configuration information is aperiodic channel state information a-CSI, and if the third DCI is used to activate the configuration information, the third DCI indicates that the priority of the a-CSI is low, and then the priority of the aperiodic channel state information a-CSI corresponding to the configuration information is low, where, because the channel state information is triggered by NACK, the terminal device determines that the priority of the channel state information is still high.

In yet another possible implementation manner, when the downlink data decoding fails, determining the first information of the channel state information includes: and the first information of the channel state information determined according to the configuration information is in a first state, and if the downlink data decoding fails, the first information of the channel state information is in a second state. Specifically, the first information may be priority information, the second state may be high priority, and the first state is low priority. Illustratively, if the downstream data decoding fails, the first information of the channel state information is changed from the first state to the second state. Specific examples may refer to the terminal device to determine that the first information of the channel state information is in the second state, where examples corresponding to implementation manners in which the first information of the channel state information corresponding to the configuration information is in the first state are not described herein again.

In this scheme, the state of the first information of the channel state information is different in the case of data channel decoding failure and other cases. Taking the first information as a priority, when the decoding of the data channel fails, the priority of the channel state information is high. In this case, it is possible to ensure normal transmission of the channel state information when the time-frequency resource of the channel state information overlaps with the time-frequency resource of other data as much as possible. The network equipment can obtain more accurate channel state information when the channel state decoding fails.

Step S1006: the terminal device sends a negative acknowledgement NACK to the network device.

Specifically, the negative acknowledgement NACK is used to indicate that the downlink data decoding fails.

Step S1007: the network device receives a negative acknowledgement NACK from the terminal device.

In the above method, when the time-frequency resource configured by the network device for the terminal device to transmit the channel state information overlaps with the time-frequency resource of other data, how to transmit the channel state information or other data is determined according to the first information of the channel state information, that is, the problem of how to transmit the channel state information and/or other data when the time-frequency resource overlaps is solved.

Referring to fig. 15, fig. 15 is a communication method provided in an embodiment of the present application, where the method includes:

step S1501: the network device sends configuration information to the terminal device.

Specifically, reference may be made to step S1001, which is not described here again.

Step S1502: the terminal device receives configuration information from the network device.

Specifically, reference may be made to step S1002, which is not described herein.

Step S1503: and the network equipment sends the downlink data to the terminal equipment.

Specifically, reference may be made to step S1003, which is not described here again.

Step S1504: the terminal device receives downlink data from the network device.

Specifically, reference may be made to step S1004, which is not described herein.

Step S1505: when the downlink data decoding fails, the terminal device determines the priority of the channel state information.

Specifically, reference may be made to step S1005, which is not described here again.

Optionally, the priority is the first information in step S1005, and the description of the first information in step S1005 may be referred to, which is not described herein.

In one implementation, the determining the priority of the channel state information when the downlink data decoding fails includes: and the priority of the channel state information is the same as the priority of the negative acknowledgement NACK, and the negative acknowledgement NACK is used for indicating the decoding failure of the downlink data. Specifically, reference may be made to step S1005, which is not described here again.

In yet another possible implementation, the method further includes: and receiving first Downlink Control Information (DCI) from the network equipment, wherein the first Downlink Control Information (DCI) is used for indicating the priority of the Negative Acknowledgement (NACK). Specifically, reference may be made to step S1005, which is not described here again.

In yet another possible implementation manner, the determining the priority of the channel state information when the downlink data decoding fails includes: and determining the priority of the channel state information according to the configuration information. Specifically, reference may be made to step S1005, which is not described here again.

In yet another possible implementation manner, the determining the priority of the channel state information according to the configuration information includes: determining that the channel state information is semi-permanent channel state information, SP-CSI, according to the configuration information; and receiving second Downlink Control Information (DCI) from the network equipment, wherein the second DCI is used for indicating the priority of the SP-CSI. Specifically, reference may be made to step S1005, which is not described here again.

In yet another possible implementation manner, the determining the priority of the channel state information according to the configuration information includes: determining that the channel state information is aperiodic channel state information A-CSI according to the configuration information; and receiving third Downlink Control Information (DCI) from the network equipment, wherein the third DCI is used for indicating the priority of the aperiodic channel state information (A-CSI). Specifically, reference may be made to step S1005, which is not described here again.

In yet another possible implementation manner, the determining the priority of the channel state information according to the configuration information includes: and determining the channel state information as periodic channel state information P-CSI according to the configuration information, wherein the priority of the periodic channel state information P-CSI is low. Specifically, reference may be made to step S1005, which is not described here again.

In yet another possible implementation manner, the determining the priority of the channel state information according to the configuration information includes: determining that the channel state information is semi-permanent channel state information, SP-CSI, according to the configuration information; receiving a medium access control element, MAC CE, from the network device; in case that the MAC CE is used to activate the configuration information, the priority of the semi-permanent channel state information SP-CSI is low priority. Specifically, reference may be made to step S1005, which is not described here again.

In yet another possible implementation manner, the determining the priority of the channel state information when the downlink data decoding fails includes: and determining the priority of the channel state information as high priority, wherein the priority of the channel state information corresponding to the configuration information is low priority. Specifically, reference may be made to step S1005, which is not described here again.

In yet another possible implementation manner, the determining the priority of the channel state information when the downlink data decoding fails includes: and when the downlink data decoding fails, determining the priority of the channel state information as high priority. Specifically, reference may be made to step S1005, which is not described here again.

In yet another possible implementation manner, the channel state information includes one or more of channel quality indication CQI information, rank indication RI information, precoding matrix indication PMI information, channel state information reference signal resource index CRI information, and interference information. Specifically, reference may be made to step S1005, which is not described here again.

Embodiment two:

referring to fig. 16, fig. 16 is a communication method provided in an embodiment of the present application, where the method includes:

step S1601: the network device sends the first configuration information to the terminal device.

Specifically, the first configuration information may include one or more of a time-frequency resource position of downlink data, a time-frequency resource position of a downlink reference signal, a period of the downlink reference signal, indication information of a time-frequency resource of an uplink reference signal, a period of the uplink reference signal, and the like, which are used for sending channel state information by the terminal device. In one example, the downlink reference signal may be a channel state information-reference signal CSI-RS. In one example, the uplink reference signal is SRS.

Step S1602: the terminal device receives first configuration information from the network device.

Specifically, the terminal device may determine, according to the first configuration information, one or more of a time-frequency resource location of the downlink data, a period of the downlink reference signal, and indication information of a time-frequency resource used for the terminal device to transmit channel state information or uplink reference signal, that is, the terminal device may determine, according to the first configuration information, at which time-frequency resource location to receive the downlink data, at which time-frequency resource location to receive the downlink reference signal, and a period of the downlink reference signal to transmit, and determine one or more of a time-frequency resource used for transmitting the channel state information or the uplink reference signal.

Step S1603: and the network equipment sends the downlink data to the terminal equipment.

With specific reference to step S1003, a detailed description is omitted here.

Step S1604: the terminal device receives downlink data from the network device.

Step S1605: and when the downlink data decoding fails and the negative acknowledgement NACK meets a third condition, the terminal equipment sends channel state information or an uplink reference signal to the network equipment.

Specifically, the negative acknowledgement NACK is used to indicate that the downlink data decoding fails. The third condition may be that the first information of the negative acknowledgement NACK is in a fifth state, the third condition may also be that the first information of the negative acknowledgement NACK is in a sixth state, and the negative acknowledgement NACK appears K times continuously, where K is a positive integer. Where K may be indicated by the network device or may be specified by a protocol. The first information may be priority information, the fifth state is high priority, and the sixth state is low priority. In one example, the first information of the negative acknowledgement NACK is in a sixth state, and the meaning that the negative acknowledgement NACK occurs K times consecutively is: the terminal equipment detects the downlink data channel, K decoding failures are continued, and the first information of NACK is in a sixth state. The continuous process specifically indicates that the terminal equipment receives K times of downlink data, and the decoding of the K times of downlink data fails. The following description takes k=3 as an example. Assuming that the terminal device receives 5 downlink data, decoding the 5 downlink data, the obtained results are { ACK, ACK, NACK, NACK, NACK }, respectively. Where ACK indicates that the downstream data channel is decoded correctly. Wherein 3 NACKs occur consecutively, and if the first information corresponding to the three NACKs is in the sixth state, it indicates that the negative acknowledgement NACK satisfies the third condition. As yet another example, assuming that the terminal device receives 5 downlink data, the decoding results are { NACK, ACK, NACK, NACK, ACK } respectively, 3 NACKs occur, but do not occur consecutively, and thus the third condition is not satisfied. As yet another example, assuming that the terminal device receives 5 downlink data, the decoding results are { ACK, ACK, NACK, NACK, NACK }, and 3 NACKs consecutively occur, but the first information corresponding to the third NACK is in the fifth state, at which time the third condition is not satisfied.

In particular, the channel state information may include one or more of channel quality indication CQI information, rank indication RI information, precoding matrix indication PMI information, channel state information reference signal resource index CRI information, and interference information. In one example, when the channel state information includes channel quality indication CQI information and/or interference information, the terminal device measures the channel quality indication CQI information and/or the interference information without measuring or updating rank indication RI information and precoding matrix indication PMI information. The channel state information may be used for the network device to retransmit downstream data or to transmit new downstream data. Optionally, the uplink reference signal is an SRS signal, and the uplink reference signal may be used for the network device to measure an uplink channel. In a TDD system, a network device may acquire downlink channel information through uplink channel information by using the uplink and downlink channels to be symmetric. Wherein, the RI information and PMI information are not measured or updated, which means that the RI information and precoding matrix indicator PMI information are not measured or updated when they are determined. Specifically, the RI information and PMI information may be determined by the network device directly indicating the information, or may be determined by a preset value, or by a value obtained by previous measurement. Since the more variables that are fed back by the terminal device, the more variables that are indicated to be measured, the more computing resources and time are required for the measurement. Therefore, in such a way, if the terminal equipment only feeds back the CQI information and/or the interference information, the processing time delay can be effectively reduced and the channel state information can be fed back more timely by only measuring the CQI information and/or the interference information.

In the above method, by means of sending channel state information or uplink reference signals to the network device by the terminal device when the downlink data decoding fails and the negative acknowledgement NACK satisfies the third condition, the high priority service is more sensitive to overhead and time delay in general, so that NACK triggering is supported for the high priority service, and service characteristics can be matched better. For low priority traffic, which is delay insensitive, reliability can be improved by hybrid automatic retransmission (hybrid automatic repeat request, HARQ), and therefore overhead can be further reduced by setting K.

In one possible implementation, when the downlink data decoding fails and the negative acknowledgement NACK satisfies the third condition, the terminal device sends channel state information or an uplink reference signal to the network device according to the first configuration information.

Specifically, the first configuration information configures a time-frequency resource for the terminal device to transmit channel state information or an uplink reference signal. Alternatively, the first configuration information configures the frequency domain granularity of the channel state information, that is, whether the channel state information is narrowband feedback or wideband feedback. Or, the specific parameters contained in the channel state information are configured in the first configuration information. The parameters included in the channel state information are as described above and are not described in detail.

In one example, assuming that the time-frequency resource configured in the first configuration information for the terminal device to send the channel state information or the uplink reference signal is high priority, if the first information of the channel state information is high priority, then when the downlink decoding fails and the priority of the negative acknowledgement NACK is high priority, the terminal device sends the channel state information or the uplink reference signal to the network device on the time-frequency resource configured in the first configuration information for the terminal device to send the channel state information or the uplink reference signal.

In yet another possible implementation, the terminal device receives a fifth DCI from the network device, the fifth DCI being used to indicate the first information of the negative acknowledgement NACK.

For example, taking the first information as priority information, the terminal device receives a fifth DCI from the network device, where the fifth DCI is used to indicate that the priority of the negative acknowledgement NACK is high priority, or the terminal device receives a fifth DCI from the network device, where the fifth DCI is used to indicate that the priority of the negative acknowledgement NACK is low priority.

In yet another possible implementation, the terminal device receives a downlink reference signal from the network device. Specifically, the downlink reference signal may be a channel state information-reference signal CSI-RS, which is used for the terminal device to measure channel state information.

In yet another possible implementation, the channel state information is determined according to a demodulation reference signal DMRS of the downlink data.

In yet another possible implementation, the terminal device sends the channel state information to the network device on the second time-frequency resource when the downlink data decoding fails and when the third condition is met.

In yet another possible implementation, the terminal device sends channel state information to the network device on the second time-frequency resource when the downlink data decoding fails.

In one example, the second time-frequency resource corresponds to a time-frequency resource of downlink data that fails to be decoded. In this way, the second time-frequency resource can be determined by the time-frequency resource of the downlink data, and therefore, the overhead for indicating the second time-frequency resource can be saved.

In yet another example, the second time-frequency resource corresponds to a time-frequency resource used for feeding back a negative acknowledgement, NACK. The negative acknowledgement NACK indicates that the downlink data decoding fails. In this way, the second time-frequency resource can be determined by the time-frequency resource that feeds back the negative acknowledgement NACK, and overhead for indicating the second time-frequency resource can be saved.

In yet another example, the second time-frequency resource is a time-frequency resource for feeding back a negative acknowledgement, NACK. The negative acknowledgement NACK indicates that the downlink data decoding fails. By the mode, the channel state information and the negative acknowledgement NACK are fed back in the same time-frequency resource, two independent time-frequency resources are not required to be indicated through the indication information, and signaling overhead can be saved.

In yet another example, the second time-frequency resource may be configured for the first configuration information, and when the downlink data is successfully decoded or there is no downlink data, no channel state information is actually transmitted on the time-frequency resource configured for the first configuration information. As shown in fig. 17, fig. 17 shows a schematic diagram of transmitting channel state information. The network equipment is configured with 5 time-frequency resources for feeding back channel state information, which are respectively a first time-frequency resource, a second time-frequency resource, a third time-frequency resource, a fourth time-frequency resource and a fifth time-frequency resource. And the terminal equipment only sends channel state information to the network equipment on the second time-frequency resource when the downlink data decoding fails and the third condition is met or the downlink data decoding fails, as shown in fig. 17, the time-frequency resource of the downlink data with the decoding failure corresponds to the third time-frequency resource, and then the second time-frequency resource is the third time-frequency resource. The terminal device sends channel state information to the network device on the third time-frequency resource, and does not send channel state information on the first time-frequency resource, the second time-frequency resource, the fourth time-frequency resource and the fifth time-frequency resource.

Step S1606: the terminal device sends a negative acknowledgement NACK to the network device.

Step S1607: the network device receives a negative acknowledgement NACK from the terminal device.

In the above method, the transmission of the supported reference signal and the feedback of the channel state information should be different for different traffic types. For example, for URLLC traffic, channel state information feedback may require fast feedback, and the channel state information is preferably narrowband information. For the eMBB service, the need for fast feedback is not high. The embodiment of the application provides a method that when downlink data decoding fails and first information of negative acknowledgement NACK is a third condition, terminal equipment sends channel state information or uplink reference signals to network equipment, and in such a way, high-priority service, such as URLLC service, can be guaranteed to be fed back quickly, overhead is reduced, and communication performance is guaranteed.

Embodiment III:

referring to fig. 18, fig. 18 is a communication method provided in an embodiment of the present application, where the method includes:

step S1801: the network device sends at least two configuration information to the terminal device.

In one example, assuming that at least two configuration information are the first configuration information and the second configuration information, the network device transmits the first configuration information and the second configuration information to the terminal device. The content included in the first configuration information and the second configuration information may refer to step S1601, which is not described herein.

Step S1802: the terminal device receives at least two configuration information from the network device.

In one possible implementation manner, the terminal device receives first information corresponding to the first configuration information; and/or receiving first information corresponding to the second configuration information; the second configuration information is one of at least two configuration information, and the first information corresponding to the first configuration information is different from the first information corresponding to the second configuration information. The difference between the first information corresponding to the first configuration information and the first information corresponding to the second configuration information means that the state of the first information corresponding to the first configuration information is different from the state of the first information corresponding to the second configuration information, in one example, assuming that the first information is priority information, the state of the first information corresponding to the first configuration information may mean that the first information corresponding to the first configuration information is high priority, the state of the first information corresponding to the second configuration information may mean that the first information corresponding to the second configuration information is low priority, and then the state of the first information corresponding to the first configuration information is different from the state of the first information corresponding to the second configuration information, that is, the first information corresponding to the first configuration information and the first information corresponding to the second configuration information are different. In still another example, assuming that the first information is priority information, the state of the first information corresponding to the first configuration information may refer to that the first information corresponding to the first configuration information is low priority, and the state of the first information corresponding to the second configuration information may refer to that the first information corresponding to the second configuration information is high priority, then the state of the first information corresponding to the first configuration information is different from the state of the first information corresponding to the second configuration information, that is, the first information corresponding to the first configuration information is different from the first information corresponding to the second configuration information.

In particular, the first information may be priority information or be used to indicate a traffic type.

In one possible implementation manner, the first information corresponding to the first configuration information may be included in the first configuration information, the first information corresponding to the second configuration information may be included in the second configuration information, or the first configuration information includes second information, where the second information has an association relationship with the first information corresponding to the first configuration information, and/or the second configuration information includes third information, where the third information has an association relationship with the first information corresponding to the second configuration information.

In one example, assuming that the terminal device receives at least two configuration information from the network device, where the first configuration information includes second information, the second information is high priority or is used to indicate high priority, the terminal device may determine, according to the second information, that the first information corresponding to the first configuration information is a high priority or a high priority service type, then the terminal device may determine, according to the first information, that the first configuration information corresponds to a high priority service type, for example, a URLLC service. Then the terminal device may determine that the second configuration information corresponds to a low priority traffic type, e.g. an eMBB traffic. For convenience of description, the embodiment of the present application may consider that the service type corresponding to the high priority is a URLLC service, and the service type corresponding to the low priority is an eMBB service.

In one example, assuming that the terminal device receives at least two configuration information from the network device, where the at least two configuration information includes first configuration information and second configuration information, the second configuration information includes third information, where the third information is low priority or is used to indicate low priority, the terminal device may determine, according to the third information, that first information corresponding to the second configuration information is low priority or is a low priority service type, then the terminal device may determine, according to the first information, that the second configuration information corresponds to a low priority service type, and determine that the first configuration information corresponds to a high priority service type.

In one example, assuming that the terminal device receives at least two configuration information from the network device, where the at least two configuration information includes first configuration information and second configuration information, the first configuration information includes second information, the second information is high priority or is used to indicate high priority, the second configuration information includes third information, the third information is low priority or is used to indicate low priority, the terminal device may determine, according to the second information, that the first information corresponding to the first configuration information is high priority or is a high priority service type, determine, according to the third information, that the first information corresponding to the second configuration information is low priority or is a low priority service type, then the terminal device may determine, according to the first information, that the first configuration information corresponds to the high priority service type, and the second configuration information corresponds to the low priority service type.

In one possible implementation manner, the first configuration information includes sixth information, where the sixth information has an association relationship with first information corresponding to the first configuration information. Optionally, the terminal device determines the first information corresponding to the first configuration information through the association relationship between the sixth information and the first information, and/or the second configuration information includes seventh information, where the seventh information has the association relationship with the first information corresponding to the second configuration information. Optionally, the terminal device determines the first information corresponding to the second configuration information according to the association relationship between the seventh information and the first information. In this way, the network device can implicitly notify the first information corresponding to the first configuration information of the terminal device through the sixth information, and implicitly notify the first information corresponding to the second configuration information of the terminal device through the seventh information, so that the cost of the network device for notifying the first information corresponding to the first configuration information and the first information corresponding to the second configuration information can be saved.

In one example, it is assumed that the terminal device receives at least two configuration information from the network device, including first configuration information and second configuration information, wherein the first configuration information includes sixth information, and the sixth information reports a block error rate (BLER) of 10 for a channel state information Table CQI-Table configured in CSI-Report for the channel state information ^-5 Or the error probability of the transport block corresponding to the channel state information Table CQI-Table configured in the channel state information Report CSI-Report is indicated to be 10 ^-5 The terminal device may determine, according to the sixth information, that the first information corresponding to the first configuration information is a high priority or a high priority service type, and that the first information corresponding to the second configuration information is a low priority or a low priority service type, and then the terminal device may determine that the first configuration information corresponds to a high priority service type, and that the second configuration information corresponds to a low priority service type.

In one example, it is assumed that the terminal device receives at least two configuration information from the network device, including first configuration information and second configuration information, wherein the second configuration information includes seventh information, and the seventh information reports a transmission block error probability corresponding to a channel state information Table CQI-Table configured in CSI-Report for the channel state informationThe rate is 10 ^-1 Or the error probability of the transport block corresponding to the channel state information Table CQI-Table configured in the channel state information Report CSI-Report is indicated to be 10 ^-1 The terminal device may determine, according to the seventh information, that the first information corresponding to the second configuration information is a low priority or a low priority service type, and determine, according to the seventh information, that the second configuration information corresponds to the low priority service type, that the first configuration information corresponds to the high priority service type.

In one example, it is assumed that the terminal device receives at least two configuration information from the network device, including first configuration information and second configuration information, wherein the first configuration information includes sixth information, and the probability of transport block error corresponding to a channel state information Table CQI-Table configured in a channel state information Report CSI-Report for the sixth information is 10 ^-5 Or the error probability of the transport block corresponding to the channel state information Table CQI-Table configured in the channel state information Report CSI-Report is indicated to be 10 ^-5 The second configuration information comprises seventh information, and the transmission block error probability corresponding to the channel state information Table CQI-Table configured in the channel state information Report CSI-Report is 10 ^-1 Or the error probability of the transport block corresponding to the channel state information Table CQI-Table configured in the channel state information Report CSI-Report is indicated to be 10 ^-1 The terminal device determines, according to the sixth information, that the first information corresponding to the first configuration information is a high priority or a high priority service type, and determines, according to the seventh information, that the first information corresponding to the second configuration information is a low priority or a low priority service type, then the terminal device may determine, according to the first information, that the first configuration information corresponds to the high priority service type, and that the second configuration information corresponds to the low priority service type.

In one possible implementation manner, the first configuration information includes eighth information, and the eighth information has an association relationship with first information corresponding to the first configuration information. Optionally, the terminal device determines the first information corresponding to the first configuration information through the association relationship between the eighth information and the first information, and/or the second configuration information includes ninth information, where the ninth information has the association relationship with the first information corresponding to the second configuration information. Optionally, the terminal device determines the first information corresponding to the second configuration information according to the association relationship between the ninth information and the first information. In this way, the network device can implicitly notify the first information corresponding to the first configuration information of the terminal device through the eighth information, and implicitly notify the first information corresponding to the second configuration information of the terminal device through the ninth information, so that the cost of the network device for notifying the first information corresponding to the first configuration information and the first information corresponding to the second configuration information can be saved.

In one example, it is assumed that the terminal device receives at least two configuration information from the network device, where the first configuration information includes eighth information, where the eighth information is a transmission block error probability corresponding to a channel state information Table CQI-Table configured in a channel state information Report CSI-Report, or is used to indicate that a transmission block error probability corresponding to a channel state information Table CQI-Table configured in a channel state information Report CSI-Report is a, and the second configuration information includes ninth information, where the ninth information is a transmission block error probability corresponding to a channel state information Table CQI-Table configured in a channel state information Report CSI-Report is B, or is used to indicate that a transmission block error probability corresponding to a channel state information Table CQI-Table configured in a channel state information Report CSI-Report is B, for example, if a is smaller than B, then the terminal device may determine that the first information corresponding to the first configuration information is a high priority or a high priority traffic type according to the eighth information, determine that the first information corresponding to the second configuration information is a low priority traffic type according to the ninth information, and may determine that the first information corresponding to the second configuration information is a low priority traffic type according to the ninth information, and then the first traffic type corresponding to the first priority traffic type is a low priority traffic type; for example, if a is greater than B, the terminal device determines, according to the eighth information, that the first information corresponding to the first configuration information is a low priority or low priority service type, and determines, according to the ninth information, that the first information corresponding to the second configuration information is a high priority or high priority service type, then the terminal device may determine, according to the first information, that the first configuration information corresponds to the low priority service type, and that the second configuration information corresponds to the high priority service type. For example, assuming that a is equal to B, the terminal device determines that the configuration information corresponding to the 256-phase quadrature amplitude modulation (quadrature amplitude modulation, QAM) modulation mode is included in the channel state information Table CQI-Table configured in the channel state information Report CSI-Report, and does not include the configuration information corresponding to the 256-QAM modulation mode, which corresponds to the high-priority service.

The frequency domain indication information includes frequency domain granularity indication information and a frequency domain bandwidth. The frequency domain bandwidth represents the bandwidth of the channel measurement. The frequency domain granularity may be narrowband feedback or wideband feedback as described above. In the case of narrowband feedback, there are two narrowband configurations per bandwidth portion BWP, as shown in table 1. Because the general service packet of the URLLC service is smaller, the occupied resources are limited when the resources are allocated, for example, 5 RBs, so that the narrowband feedback is more effective and common for the URLLC service; correspondingly, for the eMBB service, the broadband feedback can have better effect. Therefore, the corresponding relation between the configuration information and the service type can be implicitly indicated through the frequency domain granularity, and no additional indication information is needed.

In a possible implementation manner, the first configuration information includes tenth information, where the tenth information has an association relationship with first information corresponding to the first configuration information, and/or the second configuration information includes eleventh information, where the eleventh information has an association relationship with first information corresponding to the second configuration information. Optionally, the terminal device determines the first information corresponding to the first configuration information according to the association relationship between the tenth information and the first information, and may determine the first information corresponding to the second configuration information according to the association relationship between the eleventh information and the first information. In this way, the network device can implicitly notify the terminal device of the first information corresponding to the first configuration information through the tenth information, and implicitly notify the terminal device of the first information corresponding to the second configuration information through the eleventh information, so that the cost of the network device for notifying the first information corresponding to the first configuration information and the first information corresponding to the second configuration information can be saved.

In one example, assuming that the terminal device receives at least two configuration information from the network device, where the at least two configuration information includes first configuration information and second configuration information, the first configuration information includes tenth information, the second configuration information includes eleventh information, where the tenth information is narrowband feedback or is used to indicate narrowband feedback, the eleventh information is wideband feedback or is used to indicate wideband feedback, the terminal device may determine, according to the tenth information, that first information corresponding to the first configuration information is a high priority or a high priority service type, and determine, according to the eleventh information, that first information corresponding to the second configuration information is a low priority or a low priority service type, then the terminal device may determine, according to the first information, that the first configuration information corresponds to a high priority service type, and the second configuration information corresponds to a low priority service type.

In a possible implementation manner, the first configuration information includes twelfth information, where the twelfth information has an association relationship with the first information corresponding to the first configuration information, and/or the second configuration information includes thirteenth information, where the thirteenth information has an association relationship with the first information corresponding to the second configuration information. Optionally, the terminal device determines the first information corresponding to the first configuration information according to the association relationship between the twelfth information and the first information, and may determine the first information corresponding to the second configuration information according to the association relationship between the thirteenth information and the first information. In this way, the network device can implicitly notify the first information corresponding to the first configuration information of the terminal device through the twelfth information, and implicitly notify the first information corresponding to the second configuration information of the terminal device through the thirteenth information, so that the cost of the network device for notifying the first information corresponding to the first configuration information and the first information corresponding to the second configuration information can be saved.

In one example, assuming that the terminal device receives at least two configuration information from the network device, the at least two configuration information includes first configuration information and second configuration information, the first configuration information includes twelfth information, the second configuration information includes thirteenth information, the twelfth information is the number X of resource blocks RBs contained in a sub-band or the number X of resource blocks RBs contained in a sub-band used for indication, the thirteenth information is the number Y of resource blocks RBs contained in a sub-band or the number Y of resource blocks RBs contained in a sub-band used for indication, if X is smaller than Y, the terminal device determines that first information corresponding to the first configuration information is a high priority or a high priority traffic type according to the twelfth information, determines that first information corresponding to the second configuration information is a low priority or a low priority traffic type according to the thirteenth information, and the terminal device determines that the first configuration information corresponds to a high priority traffic type and the second configuration information corresponds to a low priority traffic type according to the first information.

In a possible implementation manner, the first configuration information includes fourteenth information, where the fourteenth information has an association relationship with first information corresponding to the first configuration information, and/or the second configuration information includes fifteenth information, where the fifteenth information has an association relationship with first information corresponding to the second configuration information. Optionally, the terminal device determines the first information corresponding to the first configuration information according to the association relationship between the fourteenth information and the first information, and may determine the first information corresponding to the second configuration information according to the association relationship between the fifteenth information and the first information. In this way, the network device can implicitly notify the first information corresponding to the first configuration information of the terminal device through the fourteenth information, and implicitly notify the first information corresponding to the second configuration information of the terminal device through the fifteenth information, so that the cost of the network device for notifying the first information corresponding to the first configuration information and the first information corresponding to the second configuration information can be saved.

In one example, assuming that the terminal device receives at least two configuration information from the network device as first configuration information and second configuration information, the first configuration information includes fourteenth information, the second configuration information includes fifteenth information, the fourteenth information is bandwidth P or is used for indicating bandwidth P, the fifteenth information is bandwidth Q or is used for indicating bandwidth Q, if P is smaller than Q, the terminal device determines that the first information corresponding to the first configuration information is a high priority or high priority service type according to the fourteenth information, determines that the first information corresponding to the second configuration information is a low priority or low priority service type according to the fifteenth information, and then the terminal device may determine that the first configuration information corresponds to the high priority service type according to the first information, and the second configuration information corresponds to the low priority service type.

Step S1803: and the network equipment sends the downlink data to the terminal equipment.

Reference may be made specifically to step S1003, and details thereof are not repeated here.

Step S1804: the terminal device receives downlink data from the network device.

Step S1805: and when the downlink data decoding fails, the terminal equipment sends channel state information or an uplink reference signal to the network equipment according to the first configuration information.

Specifically, the first configuration information is one of at least two configuration information, the first information corresponding to the first configuration information is the same as the first information of the negative acknowledgement NACK, and the negative acknowledgement NACK is used for indicating that the downlink data decoding fails. That is, the first information of the NACK triggers the corresponding configuration information. Optionally, the first information corresponding to the first configuration information is the same as the first information of the NACK, which may mean that the content of the first information is the same. For example, when the first information is priority information, the first information corresponding to the first configuration information is high priority, and if the first information of the negative acknowledgement NACK is also high priority, the first information is the same as the first information. Similarly, when the first information corresponding to the first configuration information is of low priority, if the first information of the negative acknowledgement NACK is of low priority, the first information is the same as the first information.

The first information may be priority information or be used to indicate a service type corresponding to the first configuration information. The first configuration information includes time-frequency resources for transmitting channel state information or uplink reference signals.

In particular, the channel state information may include one or more of channel quality indication CQI information, rank indication RI information, precoding matrix indication PMI information, channel state information reference signal resource index CRI information, and interference information. In one example, when the channel state information includes channel quality indication CQI information and/or interference information, the terminal device measures the channel quality indication CQI information and/or the interference information without measuring or updating rank indication RI information and precoding matrix indication PMI information. The channel state information may be used for the network device to retransmit downstream data or to transmit new downstream data. Alternatively, the uplink reference signal may be an SRS signal. The uplink reference signal may be used by the network device to measure the uplink channel. Wherein, the RI information and PMI information are not measured or updated, which means that the RI information and precoding matrix indicator PMI information are not measured or updated when they are determined. Specifically, the RI information and PMI information may be determined by the network device directly indicating the information, or may be determined by a preset value, or by a value obtained by previous measurement. The more variables that the terminal device feeds back, the more variables that need to be measured, and therefore the more computing resources and time that need to be spent measuring. If the terminal equipment only feeds back the CQI information and/or the interference information, the processing time delay can be effectively reduced and the channel state information can be fed back more timely only by measuring the CQI information and/or the interference information.

In an example, the priorities corresponding to the first configuration information are the same as the priorities of the negative acknowledgement NACKs, and taking the first information as the priority information as an example, for example, the priorities of the negative acknowledgement NACKs are high priorities, and the priorities corresponding to the first configuration information are high priorities; for example, the priority of the negative acknowledgement NACK is a low priority, and the priority corresponding to the first configuration information is a low priority; taking the example that the first information is used for indicating the service type corresponding to the first configuration information, for example, the first information of the negative acknowledgement NACK is a service type with high priority, the first information corresponding to the first configuration information is a service type with high priority, for example, the first information of the negative acknowledgement NACK is a service type with low priority, and the first information corresponding to the first configuration information is a service type with low priority.

In yet another possible implementation, the terminal device receives a fourth DCI from the network device, the fourth DCI being used to indicate the first information of the negative acknowledgement NACK.

In one example, taking the first information as priority information as an example, the terminal device receives a fourth DCI from the network device, where the fourth DCI is used to indicate that the priority of the negative acknowledgement NACK is a high priority. In yet another example, the terminal device receives a fourth DCI from the network device indicating that the priority of the negative acknowledgement NACK is low priority.

Step S1806: the terminal device sends a negative acknowledgement NACK to the network device.

Step S1807: the network device receives a negative acknowledgement NACK from the terminal device.

The foregoing details the method of embodiments of the present application, and the apparatus of embodiments of the present application is provided below.

Referring to fig. 19, fig. 19 is a schematic structural diagram of a terminal device 1900 provided in an embodiment of the present application, where the terminal device may include a communication unit 1901 and a processing unit 1902, where the detailed descriptions of the respective units are as follows.

A communication unit 1901 for receiving configuration information from a network device;

the communication unit 1901 is further configured to receive downlink data from the network device;

a processing unit 1902, configured to determine first information of channel state information in case of failure of decoding the downlink data, where the first information of channel state information is used to determine whether to send the channel state information to the network device, and the channel state information is determined according to the configuration information;

the communication unit 1901 is further configured to send a negative acknowledgement NACK to the network device, where the negative acknowledgement NACK is used to indicate that the downlink data decoding fails.

In yet another possible implementation manner, the processing unit 1902 is further configured to determine, according to the configuration information, first information of the channel state information.

In yet another possible implementation manner, the processing unit 1902 is further configured to determine, according to the configuration information, that the channel state information is semi-permanent channel state information SP-CSI; the communication unit 1901 is further configured to receive second downlink control information DCI from the network device, where the second DCI is used to indicate the first information of the SP-CSI.

In yet another possible implementation manner, the processing unit 1902 is further configured to determine, according to the configuration information, that the channel state information is aperiodic channel state information a-CSI; the communication unit 1901 is further configured to receive third downlink control information DCI from the network device, where the third DCI is used to indicate first information of the aperiodic channel state information a-CSI.

In yet another possible implementation manner, the processing unit 1902 is further configured to determine, according to the configuration information, that the channel state information is periodic channel state information P-CSI, where first information of the periodic channel state information P-CSI is a first state.

In yet another possible implementation manner, the processing unit 1902 is further configured to determine, according to the configuration information, that the channel state information is semi-permanent channel state information SP-CSI; the communication unit 1901 is further configured to receive a medium access control element MAC CE from the network device; in case that the MAC CE is used to activate the configuration information, the first information of the semi-permanent channel state information SP-CSI is a first state.

In yet another possible implementation manner, the processing unit 1902 is further configured to determine that the first information of the channel state information is a second state, where the first information of the channel state information corresponding to the configuration information is the first state.

In yet another possible implementation, the second state is high priority.

In yet another possible implementation, the first state is low priority.

It should be noted that the implementation and beneficial effects of each unit may also correspond to the corresponding description of the method embodiment shown in fig. 10.

Referring to fig. 20, fig. 20 is a schematic structural diagram of a terminal device 2000 provided in an embodiment of the present application, where the terminal device may include a communication unit 2001 and a processing unit 2002, where detailed descriptions of the respective units are as follows.

A processing unit 2002 for receiving downstream data from the network device through the communication unit 2001;

a communication unit 2001, configured to send channel state information or an uplink reference signal to the network device when the downlink data decoding fails and a negative acknowledgement NACK satisfies a third condition;

The communication unit 2001 is further configured to send a negative acknowledgement NACK to the network device, where the negative acknowledgement NACK is used to indicate that the downlink data decoding fails.

In a possible implementation, the communication unit 2001 is further configured to receive first configuration information from the network device; the processing unit 2002 is configured to send the channel state information or the uplink reference signal to the network device according to the first configuration information when the downlink data decoding fails and a negative acknowledgement NACK meets a third condition.

In yet another possible implementation, the fifth state is high priority.

In yet another possible implementation, the sixth state is low priority.

In yet another possible implementation manner, the channel state information includes channel quality indicator CQI information or interference information, and the processing unit 2002 is further configured to measure the channel quality indicator CQI information or the interference information, and not measure rank indicator RI information and precoding matrix indicator PMI information.

It should be noted that the implementation and beneficial effects of each unit may also correspond to the corresponding description of the method embodiment shown in fig. 16.

Referring to fig. 21, fig. 21 is a terminal device 2100 provided in the embodiment of the present application, where the terminal device 2100 includes a processor 2101 and a transceiver 2103, and may further include a memory 2102, where the processor 2101, the memory 2102 and the transceiver 2103 are connected to each other through a bus 2104.

Memory 2102 includes random access memory (random access memory, RAM), read-only memory (ROM), erasable programmable read-only memory (erasable programmable read only memory, EPROM), or portable read-only memory (compact disc read-only memory, CD-ROM), memory 2102 for associated instructions and data. The transceiver 2103 is used to receive and transmit data.

The processor 2101 may be one or more central processing units (central processing unit, CPU), and in the case where the processor 2101 is a CPU, the CPU may be a single-core CPU or a multi-core CPU.

The processor 2101 in the terminal apparatus 2100 reads the program code stored in the memory 2102 to perform the following operations:

receiving configuration information from a network device via the transceiver 2103;

receiving downstream data from the network device via the transceiver 2103;

under the condition that the downlink data decoding fails, determining first information of channel state information, wherein the channel state information is determined according to the configuration information;

and transmitting a Negative Acknowledgement (NACK) to the network device through the transceiver 2103, wherein the NACK is used for indicating that the downlink data decoding fails. Optionally, the first information of the channel state information is used to determine whether to send the channel state information to the network device.

In yet another possible implementation, the processor 2101 is further configured to determine first information of the channel state information according to the configuration information.

In yet another possible implementation, the processor 2101 is further configured to determine, according to the configuration information, that the channel state information is semi-permanent channel state information SP-CSI; a second downlink control information, DCI, is received from the network device via the transceiver 2103, the second DCI being used to indicate the first information of the SP-CSI.

In yet another possible implementation, the processor 2101 is further configured to determine, according to the configuration information, that the channel state information is aperiodic channel state information a-CSI; third downlink control information, DCI, is received from the network device via the transceiver 2103, the third DCI being used to indicate first information of the aperiodic channel state information, a-CSI.

In yet another possible implementation manner, the processor 2101 is further configured to determine, according to the configuration information, that the channel state information is periodic channel state information P-CSI, where first information of the periodic channel state information P-CSI is a first state.

In yet another possible implementation, the processor 2101 is further configured to determine, according to the configuration information, that the channel state information is semi-permanent channel state information SP-CSI; receiving a medium access control element, MAC CE, from the network device via the transceiver 2103; in case that the MAC CE is used to activate the configuration information, the first information of the semi-permanent channel state information SP-CSI is a first state.

In yet another possible implementation manner, the processor 2101 is further configured to determine that the first information of the channel state information is a second state, where the first information of the channel state information corresponding to the configuration information is the first state.

In yet another possible implementation, the second state is high priority.

In yet another possible implementation, the first state is low priority.

It should be noted that the implementation and beneficial effects of each operation may also correspond to the corresponding description of the method embodiment shown in fig. 10.

Referring to fig. 22, fig. 22 is a terminal device 2200 provided in an embodiment of the present application, where the terminal device 2200 includes a processor 2201 and a transceiver 2203, and may further include a memory 2202, and the processor 2201, the memory 2202 and the transceiver 2203 are connected to each other through a bus 2204.

Memory 2202 includes random access memory (random access memory, RAM), read-only memory (ROM), erasable programmable read-only memory (erasable programmable read only memory, EPROM), or portable read-only memory (compact disc read-only memory, CD-ROM), and the memory 2202 is used for related instructions and data. The transceiver 2203 is used to receive and transmit data.

The processor 2201 may be one or more central processing units (central processing unit, CPU), and in the case where the processor 2201 is a CPU, the CPU may be a single-core CPU or a multi-core CPU.

The processor 2201 in the terminal device 2200 reads the program code stored in the memory 2202 for performing the following operations:

receiving, by the transceiver 2203, downstream data from a network device;

transmitting, by the transceiver 2203, channel state information or an uplink reference signal to the network device if the downlink data decoding fails and a negative acknowledgement NACK satisfies a third condition;

and transmitting a negative acknowledgement NACK to the network device through the transceiver 2203, wherein the negative acknowledgement NACK is used for indicating that the downlink data decoding fails.

In one possible implementation, the processor 2201 is further configured to receive, through the transceiver 2203, first configuration information from the network device; and sending the channel state information or the uplink reference signal to the network equipment according to the first configuration information under the condition that the downlink data decoding fails and the negative acknowledgement NACK meets a third condition.

In yet another possible implementation, the fifth state is high priority.

In yet another possible implementation, the sixth state is low priority.

In yet another possible implementation, the processor 2201 is further configured to measure the channel quality indication CQI information and/or interference information without measuring rank indication RI information and precoding matrix indication PMI information.

It should be noted that the implementation and beneficial effects of each operation may also correspond to the corresponding description of the method embodiment shown in fig. 16.

The embodiment of the application also provides a chip system, which comprises at least one processor, a memory and an interface circuit, wherein the memory, the transceiver and the at least one processor are interconnected through lines, and instructions are stored in the at least one memory; the instructions, when executed by the processor, implement the method flow shown in fig. 10 or fig. 16.

The embodiments of the present application also provide a computer readable storage medium having program instructions stored therein, which when run on a terminal device, implement the method flow shown in fig. 10 or fig. 16.

Embodiments of the present application also provide a computer program product, which when run on a terminal, implements the method flow shown in fig. 10 or fig. 16.

Those of ordinary skill in the art will appreciate that implementing all or part of the above-described method embodiments may be accomplished by a computer program to instruct related hardware, the program may be stored in a computer readable storage medium, and the program may include the above-described method embodiments when executed. And the aforementioned storage medium includes: ROM or random access memory RAM, magnetic or optical disk, etc.

Claims

A method of communication, comprising:

receiving configuration information from a network device;

receiving downlink data from the network device;

and when the downlink data decoding fails, determining first information of channel state information, wherein the first information of the channel state information is used for determining whether to send the channel state information to the network equipment, and the channel state information is determined according to the configuration information.
The method of claim 1, wherein the determining the first information of the channel state information when the downstream data decoding fails comprises:

And the first information of the channel state information is the same as the first information of the negative acknowledgement NACK, and the negative acknowledgement NACK is used for indicating that the downlink data decoding fails.
The method of claim 1, wherein the determining the first information of the channel state information when the downstream data decoding fails comprises: and determining first information of the channel state information according to the configuration information.
A method according to claim 3, wherein said determining first information of said channel state information based on said configuration information comprises:

determining that the channel state information is semi-permanent channel state information, SP-CSI, according to the configuration information;

and receiving second Downlink Control Information (DCI) from the network equipment, wherein the second DCI is used for indicating the first information of the SP-CSI.
A method according to claim 3, wherein said determining first information of said channel state information based on said configuration information comprises:

determining that the channel state information is aperiodic channel state information A-CSI according to the configuration information;

and receiving third Downlink Control Information (DCI) from the network equipment, wherein the third DCI is used for indicating first information of the aperiodic channel state information (A-CSI).
A method according to claim 3, wherein said determining first information of said channel state information based on said configuration information comprises:

and determining that the channel state information is periodic channel state information P-CSI according to the configuration information, wherein first information of the periodic channel state information P-CSI is a first state.
A method according to claim 3, wherein said determining first information of said channel state information based on said configuration information comprises:

determining that the channel state information is semi-permanent channel state information, SP-CSI, according to the configuration information;

receiving a medium access control element, MAC CE, from the network device;

in case that the MAC CE is used to activate the configuration information, the first information of the semi-permanent channel state information SP-CSI is a first state.
The method of claim 1, wherein said determining the first information of the channel state information when the downstream data decoding fails comprises:

and determining the first information of the channel state information to be in a second state, wherein the first information of the channel state information corresponding to the configuration information is in the first state.
The method of claim 8, wherein the step of determining the position of the first electrode is performed,

the second state is high priority.
The method according to any one of claims 6 to 8, wherein,

the first state is low priority.
The method according to any one of claims 1 to 10, wherein,

the first information is priority information.
A method of communication, comprising:

receiving downlink data from a network device;

and when the downlink data decoding fails and a negative acknowledgement NACK meets a third condition, sending channel state information or an uplink reference signal to the network equipment, wherein the negative acknowledgement NACK is used for indicating that the downlink data decoding fails.
The method according to claim 12, wherein the method further comprises:

receiving first configuration information from the network device;

and when the downlink data decoding fails and the negative acknowledgement NACK meets a third condition, sending channel state information or an uplink reference signal to the network device, including:

and when the downlink data decoding fails and the negative acknowledgement NACK meets a third condition, sending the channel state information or the uplink reference signal to the network equipment according to the first configuration information.
The method according to claim 12 or 13, wherein,

the third condition is that the first information of the negative acknowledgement NACK is a fifth state.
The method according to claim 12 or 13, wherein,

the third condition is that the first information of the negative acknowledgement NACK is in a sixth state, and the negative acknowledgement NACK appears continuously K times, where K is a positive integer.
The method according to claim 14 or 15, wherein,

the fifth state is high priority and the sixth state is low priority.
The method according to any one of claims 12 to 16, wherein,

the first information is priority information.
The method according to any of claims 12-17, wherein the channel state information comprises channel quality indication, CQI, information or interference information, the method further comprising:

and measuring the Channel Quality Indication (CQI) information and/or interference information, and not measuring the Rank Indication (RI) information and the Precoding Matrix Indication (PMI) information.
A terminal device, comprising:

a communication unit for receiving configuration information from a network device;

the communication unit is further configured to receive downlink data from the network device;

And the processing unit is used for determining first information of channel state information under the condition that the downlink data decoding fails, wherein the channel state information is determined according to the configuration information.
The apparatus of claim 19, wherein the device comprises a plurality of sensors,

and the first information of the channel state information is the same as the first information of the negative acknowledgement NACK, and the negative acknowledgement NACK is used for indicating that the downlink data decoding fails.
The apparatus of claim 19, wherein the device comprises a plurality of sensors,

the processing unit is further configured to determine first information of the channel state information according to the configuration information.
The apparatus of claim 21, wherein the device comprises a plurality of sensors,

the processing unit is further configured to determine that the channel state information is semi-permanent channel state information SP-CSI according to the configuration information;

the communication unit is further configured to receive second downlink control information DCI from the network device, where the second DCI is used to indicate the first information of the SP-CSI.
The apparatus of claim 21, wherein the device comprises a plurality of sensors,

the processing unit is further configured to determine that the channel state information is aperiodic channel state information a-CSI according to the configuration information;

The communication unit is further configured to receive third downlink control information DCI from the network device, where the third DCI is used to indicate first information of the aperiodic channel state information a-CSI.
The apparatus of claim 21, wherein the device comprises a plurality of sensors,

the processing unit is further configured to determine, according to the configuration information, that the channel state information is periodic channel state information P-CSI, where first information of the periodic channel state information P-CSI is a first state.
The apparatus of claim 21, wherein the device comprises a plurality of sensors,

the processing unit is further configured to determine that the channel state information is semi-permanent channel state information SP-CSI according to the configuration information;

the communication unit is further configured to receive a medium access control element MAC CE from the network device;

in case that the MAC CE is used to activate the configuration information, the first information of the semi-permanent channel state information SP-CSI is a first state.
The apparatus of claim 19, wherein the device comprises a plurality of sensors,

the processing unit is further configured to determine that the first information of the channel state information is in a second state, where the first information of the channel state information corresponding to the configuration information is in the first state.
The apparatus of claim 26, wherein the device comprises a plurality of sensors,

the second state is high priority.
The apparatus according to any one of claims 24 to 26, wherein,

the first state is low priority.
The apparatus according to any one of claims 19 to 28, wherein,

the first information is priority information.
A terminal device, comprising:

the processing unit is used for receiving downlink data from the network equipment through the communication unit;

the communication unit is further configured to send channel state information or an uplink reference signal to the network device when the downlink data decoding fails and a negative acknowledgement NACK satisfies a third condition, where the negative acknowledgement NACK is used to indicate that the downlink data decoding fails.
The apparatus of claim 30, wherein the device comprises a plurality of sensors,

the communication unit is further configured to receive first configuration information from the network device;

the communication unit is further configured to send, when the downlink data decoding fails and the negative acknowledgement NACK meets a third condition, the channel state information or the uplink reference signal to the network device according to the first configuration information.
The apparatus according to claim 30 or 31, wherein,

the third condition is that the first information of the negative acknowledgement NACK is a fifth state.
The apparatus according to claim 30 or 31, wherein,

the third condition is that the first information of the negative acknowledgement NACK is in a sixth state, and the negative acknowledgement NACK appears continuously K times, where K is a positive integer.
The method according to claim 32 or 33, wherein,

the fifth state is high priority and the sixth state is low priority.
The method of any one of claims 30-34, wherein,

the first information is priority information.
The apparatus according to any of claims 30-35, wherein the channel state information comprises channel quality indication, CQI, information or interference information,

the processing unit is further configured to measure the channel quality indicator CQI information or the interference information without measuring rank indication RI information and precoding matrix indicator PMI information.
A computer readable storage medium, characterized in that the computer readable storage medium has stored therein program instructions which, when run on a processor, implement the method of any of claims 1-18.