CN117641437A

CN117641437A - Feedback method of channel state information report, user terminal and network equipment

Info

Publication number: CN117641437A
Application number: CN202410112640.5A
Authority: CN
Inventors: 郑国增; 池连刚; 张健
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2024-01-26
Filing date: 2024-01-26
Publication date: 2024-03-01

Abstract

The application provides a feedback method of a channel state information report, a user terminal and network equipment, and relates to the field of mobile communication. The method comprises the following steps: receiving channel state information report configuration sent by network equipment, wherein the channel state information report configuration comprises first indication information and second indication information, the first indication information is used for indicating a plurality of carriers, and the second indication information is used for indicating reference signal resource sets respectively corresponding to the plurality of carriers; obtaining a channel state information report including channel state information of a plurality of carriers based on the channel state information report configuration; the channel state information report is fed back to the network device. The user terminal feeds back the channel state information of a plurality of carriers to the network equipment through one channel state information report, replaces feeding back the channel state information of a plurality of carriers through a plurality of channel state information reports, can save the expenditure consumed by the user terminal for feeding back the channel state information reports, and ensures the normal operation of other tasks to a certain extent.

Description

Feedback method of channel state information report, user terminal and network equipment

Technical Field

The present invention relates to the field of mobile communications, and in particular, to a feedback method for channel state information reporting, a user terminal, and a network device.

Background

The channel state information (Channel State Information, CSI) report is a report carrying channel state information that a User Equipment (User Equipment) feeds back to a network device, i.e. the User terminal provides the network device with state information about the channel on which it is located. The channel state information includes: parameters such as frequency response, signal-to-noise ratio, multipath propagation and the like of the channel are favorable for assisting network equipment in downlink scheduling, so that the mobile communication system adapts to the current channel condition, and guarantees are provided for high-reliability and high-rate communication.

The channel state information is obtained by measuring and analyzing the propagation condition of the carrier wave in the channel by the user terminal. Therefore, in the current technology, each carrier corresponds to one channel state information report independently, the ue needs to feed back multiple channel state information reports corresponding to multiple carriers to the network device, and for the ue, the overhead consumed by the channel state information report feedback is large, which may affect the normal operation of other tasks of the ue.

Disclosure of Invention

The feedback method for the channel state information report, the user terminal and the network equipment can save the cost consumed by the user terminal for carrying out the channel state information report feedback, and ensure the normal operation of other tasks of the user terminal to a certain extent.

In order to achieve the above purpose, the present application adopts the following technical scheme:

in a first aspect, the present application provides a feedback method for reporting channel state information, including: receiving channel state information report configuration sent by network equipment, wherein the channel state information report configuration comprises first indication information and second indication information, the first indication information is used for indicating a plurality of carriers, the second indication information is used for indicating a plurality of reference signal resource sets used for channel measurement, and the plurality of reference signal resource sets respectively correspond to the plurality of carriers; obtaining a channel state information report based on the channel state information report configuration, wherein the channel state information comprises channel state information corresponding to a plurality of carriers; the channel state information report is fed back to the network device. The user terminal feeds back the channel state information corresponding to the plurality of carriers to the network equipment through one channel state information report, replaces the channel state information corresponding to the plurality of carriers fed back through the plurality of channel state information reports in the prior art, can save the expenditure consumed by the user terminal for carrying out the channel state information report feedback, and ensures the normal operation of other tasks of the user terminal to a certain extent.

In one possible implementation, the channel state information report includes: a first parameter corresponding to the plurality of carriers; the first parameter includes at least one of a reference signal received power L1-RSRP and a reference signal to interference plus noise ratio L1-SINR, the channel state information report includes a first parameter corresponding to the plurality of carriers, and the first parameter includes at least one of a reference signal received power and a reference signal to interference plus noise ratio. And feeding back downlink transmission performance corresponding to the plurality of carriers through the channel state information report and used for evaluating the communication system, so that the network equipment can determine the current downlink transmission performance based on the first parameter.

In one possible implementation, the channel state information report further includes: reference signal resource indication information CRI corresponding to a reference carrier; the reference carrier is one carrier of the plurality of carriers, the channel state information report further comprises reference signal resource indication information CRI corresponding to the reference carrier, the reference carrier is one carrier of the plurality of carriers, the rest carriers share the reference signal resource indication information CRI corresponding to the reference carrier, one CRI corresponding to one carrier is not needed, and the cost consumed by feedback channel state information report is further saved.

In one possible implementation manner, the number of first parameters corresponding to each carrier in the channel state information report is the same, and the number of first parameters corresponding to each corresponding carrier is the same when the plurality of carriers share the reference signal resource indication information of the reference carrier.

In one possible implementation manner, the arrangement order of the first parameters corresponding to the plurality of carriers is associated with the priorities of the plurality of carriers, and specifically, the first parameters corresponding to the plurality of carriers are ordered according to the order from high to low of the priorities of the plurality of carriers. Since the channel state information report includes the first parameters corresponding to the plurality of carriers, the arrangement order of the first parameters corresponding to the plurality of carriers is related to the priorities of the plurality of carriers, that is, the first parameters corresponding to the plurality of carriers are arranged according to the order from high to low of the priorities of the plurality of carriers.

In one possible implementation, the priorities of the plurality of carriers are related to the serial numbers of the carriers, and the smaller the serial number of the carrier, the higher the priority of the corresponding carrier. The serial numbers of the plurality of carriers are unique identifiers of the carriers, and the carriers can be clearly indicated, so that the priority of the carriers can be determined according to the serial numbers.

In one possible implementation, the first parameters corresponding to the plurality of carriers include one first parameter expressed in the form of an actual value, and a plurality of first parameters expressed in the form of a differential value from the actual value. The first parameters do not need to be represented by actual values, so that the cost consumed by measuring the channel state can be saved.

In one possible implementation, the channel state information includes a second parameter of the plurality of carriers, the second parameter including at least one of a rank indicator RI, a channel quality indicator CQI, and a precoding matrix indicator PMI. The channel state information report is used for feeding back second parameters corresponding to the plurality of carriers, so that the network equipment can realize better performance of the communication system based on the fed back second parameters corresponding to the plurality of carriers.

In one possible implementation manner, when the second parameter includes CQI and/or PMI, the CQIs and/or PMIs corresponding to the plurality of carriers are represented by the form of corresponding subband parameters, and when the second parameter is CQI, the CQIs corresponding to the plurality of carriers are represented by the form of corresponding subband CQIs; when the second parameter is PMI, PMIs corresponding to the plurality of carriers are represented by the form of corresponding subband PMIs. The CQI and/or PMI corresponding to the plurality of carriers are represented by the form of the corresponding subband parameters, so that the channel state corresponding to the plurality of carriers can be more effectively represented.

In one possible implementation manner, the multiple carriers are combined to obtain a total carrier corresponding to the multiple carriers; the frequency band covered by the total carrier comprises: a frequency band covered by the plurality of carriers and an interval frequency band between the plurality of carriers; dividing sub-bands of the total carrier based on a preset number of resource blocks to obtain sub-bands corresponding to a plurality of carriers respectively; the number of resource blocks contained in each sub-band is the same. The sub-band is obtained by jointly dividing a plurality of carriers, so that the relevance between channel state information corresponding to the plurality of carriers can be increased.

In one possible implementation, when the second parameter includes CQI, CQI corresponding to the plurality of carriers includes: one CQI in the form of an actual value, and a plurality of CQIs in the form of differential values from the actual value. The second parameters corresponding to the plurality of carriers include: the second parameter in the form of an actual value and the plurality of second parameters in the form of differential values from the actual value do not need to be expressed in the form of the actual value, so that the overhead consumed for measuring the channel state can be saved.

In one possible implementation, when the second parameter includes PMI, the channel state information report further includes: wideband precoding information associated with a plurality of carriers; the wideband precoding information includes: at least one of angle information, multipath information and Doppler shift information, a plurality of carriers share broadband precoding information corresponding to one PMI, one PMI does not need to correspond to one precoding information, and the expenditure consumed by feedback channel state information reporting is further saved.

In a second aspect, the present application provides a feedback method of channel state information, applied to a network device, including: transmitting a channel state information report configuration to a user terminal so that the user terminal obtains a channel state information report comprising channel state information corresponding to a plurality of carriers based on the channel state information configuration; the channel state information reporting configuration includes first indication information and second indication information; the first indication information is used for indicating a plurality of carriers; the second indication information is used for indicating a plurality of reference signal resource sets for channel measurement, and the plurality of reference signal resource sets respectively correspond to the plurality of carriers; and receiving the channel state information report fed back by the user terminal. The user terminal feeds back the channel state information corresponding to the plurality of carriers to the network equipment through one channel state information report, replaces the channel state information corresponding to the plurality of carriers fed back through the plurality of channel state information reports in the prior art, can save the expenditure consumed by the user terminal for carrying out the channel state information report feedback, and ensures the normal operation of other tasks of the user terminal to a certain extent.

In a third aspect, the present application provides a user terminal, including: a processor and a memory; the memory stores computer-executable instructions; the processor executes computer-executable instructions stored in the memory such that the processor performs the method of the first aspect.

In a fourth aspect, the present application provides a network device, comprising: a transceiver for performing a transmit channel state information report configuration and receiving channel state information reports.

In a fifth aspect, the present application provides a computer readable storage medium having stored therein a computer program or instructions which, when executed, implement the method of the first aspect described above.

In a sixth aspect, the present application provides a computer program product comprising a computer program or instructions which, when executed by a processor, implement the method of the first aspect described above.

Drawings

FIG. 1 is a block diagram of an exemplary communication system provided in an embodiment of the present application;

fig. 2 is a flow chart of a feedback method of channel state information reporting according to an embodiment of the present application;

fig. 3 is a schematic diagram of a multi-carrier joint dividing sub-band according to an embodiment of the present application;

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

fig. 5 is a structural example diagram of a user terminal according to an embodiment of the present application.

Detailed Description

The terms first, second, third and the like in the description and in the claims and drawings are used for distinguishing between different objects and not for limiting the specified sequence.

In the embodiments of the present application, words such as "exemplary" or "such as" are used to mean serving as examples, illustrations, or descriptions. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

For clarity and conciseness in the description of the following embodiments, a brief description of the related art will be given first:

a Channel (Channel) refers to a medium or path for transmitting information, and in a communication system, the Channel may be a path along which radio waves propagate in air, or may be a physical medium such as an optical fiber.

A Carrier (Carrier) is a high frequency signal used to carry an information signal, which is modulated onto a Carrier and then transmitted through a channel in a communication system.

The following is a description of the advantages of a feedback method for reporting channel state information provided in the present application, simply in combination with a feedback method for reporting channel state information in the prior art.

In the current technology, the number of channel state information reports fed back by the user terminal to the network device is the same as the number of carriers, for example: when there are Q carriers, the number of channel state information reports fed back to the network device by the user terminal is Q, where Q is an integer greater than 1, and the Q channel state information reports correspond to the Q carriers respectively. In the current technology, the user terminal needs to feed back the channel state information reports with the same number of carriers, which results in larger overhead consumed by the feedback of the channel state information reports, and further, the normal operation of other tasks of the user terminal may be affected due to the larger overhead consumed by the feedback of the channel state information, for example: affecting other voice communications being executed by the user terminal, resulting in a stuck voice transmission, and affecting the quality of the voice communications.

The application provides a feedback method of channel state information report, which receives channel state information report configuration sent by network equipment, wherein the channel state information report configuration comprises first indication information and second indication information, the first indication information is used for indicating a plurality of carrier information, the second indication information is used for indicating a plurality of reference signal resource sets for channel measurement, and the plurality of reference signal resource sets respectively correspond to the plurality of carrier information; obtaining a channel state information report based on the channel state information report configuration, wherein the channel state information report comprises channel state information corresponding to a plurality of carriers; the channel state information report is fed back to the network device. According to the feedback method for the channel state information report, the user terminal feeds back the channel state information report to the network equipment, so that the user terminal feeds back a plurality of channel state information reports corresponding to a plurality of carriers to the network equipment in the prior art, the expenditure consumed by the user terminal for feeding back the channel state information report can be saved, and the normal operation of other tasks of the user terminal can be ensured to a certain extent.

The feedback method of the channel state information report provided by the application can be suitable for a communication system, a fifth generation (5G) communication system, a 2G, 4G and 3G communication system, an LTE and 5G hybrid architecture or a 5G new wireless (5G New Radio,5G NR) system, a new communication system in future communication development and the like.

For ease of understanding, a communication system is first described by way of example with reference to fig. 1. Fig. 1 includes a network device 1, a UE1 (user terminal 1), and a UE2 (user terminal 2).

In the embodiment of the present application, the network device 1 is any device that is located at a network side and has a wireless transceiver function, including but not limited to: a base station (gNodeB or gNB) or a transceiver point (transmission receiving point/transmission reception point, TRP) in a New Radio (NR), etc. The network device 1 may be: macro base station, micro base station, pico base station, small station, relay station, balloon station, or the like. The network device 1 may contain one or more co-sited or non-co-sited transmission points (Transmission Reception Point, TRP). The network device 1 may also be a wireless controller, a Centralized Unit (CU), and/or a Distributed Unit (DU) in the context of a cloud wireless access network (cloud radio access network, CRAN). The network device 1 may communicate with the user terminal device or may communicate with the user terminal device through a relay station.

UE1 may communicate with multiple network devices of different technologies, for example: the UE1 may communicate with a network device supporting an LTE network, may communicate with a network device supporting a 5G network, and may perform dual connectivity with the network device supporting the LTE network and the network device supporting the 5G network.

In the embodiments provided herein, the UE1 may be in various forms, such as a mobile phone (mobile phone), a tablet (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) user terminal device, an augmented reality (augmented reality, AR) user terminal device, a wireless user terminal in industrial control (industrial control), an on-board user terminal device, a wireless user terminal in unmanned driving (self driving), a wireless user terminal in remote medical (remote medical), a wireless user terminal in smart grid (smart grid), a wireless user terminal in transportation security (transportation safety), a wireless user terminal in smart city (smart city), a wireless user terminal in smart home (smart home), a wearable user terminal device, and so on. A UE may also be referred to as a user terminal device, an access user terminal device, an in-vehicle user terminal, an industrial control user terminal, a UE unit, a UE station, a mobile station, a remote user terminal device, a mobile device, a user terminal device, a wireless communication device, a UE agent, a UE apparatus, or the like. The user terminal may also be a fixed user terminal or a mobile user terminal. The implementation of UE2 is similar to that of UE1 and will not be described in detail.

The foregoing description describes an exemplary composition of a communication system with reference to fig. 1, and in the context of the communication system shown in fig. 1, a feedback method for reporting channel state information provided in the embodiment of the present application is described in detail with reference to fig. 2 and 3. As shown in fig. 2, the flow of the feedback method of the channel state information report includes the following steps:

s201, the network device 1 transmits the channel state information report configuration to the UE 1.

The channel state information reporting configuration (CSI reporting configuration) is configured by the network device and signaled to the user terminal via RRC (Radio Resource Control).

Wherein the CSI reporting configuration includes first indication information and second indication information.

The first indication information is used for indicating a plurality of carriers, that is, the first indication information is used for indicating that channel state information corresponding to the plurality of carriers is included in a channel state information report fed back by the UE 1. Specifically, the first indication information includes a plurality of carrier information, where the plurality of carrier information indicates a plurality of carriers, and the plurality of carriers are in one-to-one correspondence with the plurality of carrier information, for example: the first indication information includes carrier a information, carrier b information, and carrier c information, and is used to indicate carrier a, carrier b, and carrier c, that is, the network device 1 indicates, through the first indication information, that the CSI report that is finally fed back by the UE1 includes channel state information corresponding to carrier a, channel state information corresponding to carrier b, and channel state information corresponding to carrier c.

In one possible implementation, the carrier information may be a carrier sequence number, a carrier frequency, etc. In order to avoid data transmission collision in a communication system, carrier frequencies are generally different between different carriers, so that the corresponding carriers can be identified by the carrier frequencies.

The second indication information is used for indicating a plurality of reference signal resource sets for channel measurement, and the plurality of reference signal resource sets respectively correspond to the plurality of carriers. For example: the first indication information indicates carrier a, carrier B and carrier C, the second indication information indicates a reference signal resource set a corresponding to carrier a, a reference signal resource set B corresponding to carrier B and a reference signal resource set C corresponding to carrier C, the reference signal resources included in the reference signal resource set a are used for measuring channel state information corresponding to carrier a, the reference signal resources included in the reference signal resource set B are used for measuring channel state information corresponding to carrier B, and the reference signal resources included in the reference signal resource set C are used for measuring channel state information corresponding to carrier C.

The set of reference signal resources includes one or more reference signal resources for measuring channel state information. The reference signal resources (Reference Signal Resources, RSR) comprise: the time-frequency resources and associated reference signals are utilized by the user terminal to measure channel state information.

A Reference Signal (RS) is a special Signal used for channel state information acquisition in a wireless communication system, and is intended to enable a user terminal to accurately measure the strength and quality of a received Signal, thereby pushing out the state of a current channel to obtain channel state information.

The plurality of reference signal resource sets for channel measurement indicated by the second indication information have the same time domain characteristics, i.e. the reference signals included in the plurality of reference signal resource sets all have the same time domain characteristics, for example: the reference signals included in the plurality of reference signal combinations are all transmitted periodically, semi-continuously, or aperiodically.

The plurality of reference signal resource sets for channel measurement indicated by the second indication information are associated with the same beam/spatial filtering information, i.e. the reference signals included in the plurality of reference signal resource sets are all associated with the same beam/spatial filtering information. Among them, spatial filtering (Spatial Filtering) is a signal processing technique that receives signals using multiple sensors/antenna elements and separates or enhances specific signals in conjunction with the outputs of the multiple sensors/antenna elements. For example: UE1 receives reference signals in multiple sets of reference signal resources with the same receive beam, UE1 receives reference signals in multiple sets of reference signal resources with the same sensor/antenna element and performs spatial filtering.

The reference signals in the plurality of reference signal resource sets indicated by the second indication information have the same time domain characteristics and are associated with the same wave beam/space filtering information, so that errors of channel state measurement caused by different measurement moments and different wave beams/antenna elements/sensors for receiving the reference signals when the user terminal measures the channel state can be avoided, the accuracy of the measured channel state information is improved, and the network equipment is favorable for downlink scheduling according to the CSI report fed back by the user terminal.

It should be noted that, besides the above-described CSI report configuration including the first indication information and the second indication information, the CSI report configuration includes other information, where the CSI report configuration includes other information that is the same as the configuration manner in the prior art, and the network device configures according to the actual situation, which is not specifically limited in this application. For example: the CSI reporting configuration further includes: report content indication information, report feedback transmission channel information, etc. The report content indication information is used to indicate the channel state information type included in the CSI report fed back by UE1, for example: CQI (CQI-Channel Quality Indication, channel quality indication), PMI (Precoding Matrix Indicator, precoding matrix indication), RI (rank indication), and the like. The report feedback transport channel information is used to indicate the transport channel used when UE1 feeds back CSI reports to the network device. For example: the report feedback transmission channel information is used to instruct transmission of CSI reports through PUCCH (physical uplink control channel) or to instruct transmission of CSI reports through PUSCH (physical uplink shared channel).

S202, the UE1 obtains a channel state information report based on the channel state information report configuration.

Wherein the channel state information report (channel state information report) includes: channel state information corresponding to the plurality of carriers. The plurality of carriers are a plurality of carriers indicated by the first indication information in the channel state information reporting configuration. Specifically, in response to receiving the channel state information reporting configuration, the UE1 measures channel states corresponding to the plurality of carriers indicated by the first indication information based on the reference signal resource set corresponding to the plurality of carriers indicated by the second indication information in the signal state information reporting configuration, and obtains channel state information corresponding to the plurality of carriers, thereby obtaining a channel state information report including channel state information of the plurality of carriers.

In one possible implementation manner, the channel state information report includes first parameters corresponding to the plurality of carriers respectively, specifically, in response to receiving the channel state information report configuration, the UE1 obtains the first parameters based on the reference signal resource set corresponding to the plurality of carriers and indicated by the second indication information in the signal state information report configuration, and the UE1 measures the first parameters based on the reference signal resource set. The first parameter is used to evaluate downlink transmission performance in the communication system.

Specifically, the first parameter includes at least one of L1-RSRP (L1 layer reference Signal received Power) and LI-SINR (L1 layer reference Signal received Power), and the number of L1-RSRPs or L1-SINRs corresponding to each carrier is the same. For example: when the first parameter is L1-RSRP, the carrier joint CSI report carries L1-RSRP corresponding to carrier a, carrier b and carrier c, respectively, where the number of L1-RSRP corresponding to carrier a=the number of L1-RSRP corresponding to carrier b=the L1-RSRP corresponding to carrier c in the channel state information report.

The L1-RSRP (Level 1 Reference Signal Received Power,L1 layer reference signal received power) is a parameter for evaluating downlink transmission performance in a communication system, and represents a linear average value of power (in watts) of Resource Elements (REs) carrying Reference Signals (RSs), that is, LI-RSRP may represent an average power of reference signals measured by a user terminal within a certain bandwidth. The larger the value of the L1-RSRP, the larger the average power of the measured reference signal, the better the downlink transmission performance is characterized.

The L1-SINR (Level 1 Signal to Interference plus Noise Ratio,L1 layer reference signal interference signal to noise ratio) is a parameter for evaluating downlink transmission performance in a communication system, and represents the ratio of effective signal to interference noise in a reference signal received by a user terminal. When the value of the L1-SINR is larger, the interference of the reference signal received by the user terminal is smaller, and the downlink transmission performance is better.

It should be noted that, in the existing communication system, the reporting of the L1-RSRP is generally supported, so that in general, the first parameter carried by the channel state information report is L1-RSRP.

In one possible implementation, the channel state information report further includes reference signal resource indication information (CSI-RS Resource Indicator, CRI) corresponding to the plurality of carriers.

The reference signal resource indication information is used for indicating that the UE1 performs channel state measurement is a used reference signal resource, that is, the reference signal resource indication information is used for indicating that the UE1 obtains the first parameter. For example: the reference signal resource set a corresponding to the carrier a includes: the channel state information report obtained by the UE1 includes 3 first parameters corresponding to the carrier a, which are respectively: the carrier a is used for indicating the reference signal resource A1, the reference signal resource A2 and the reference signal resource A3 in the reference signal resource set a, wherein the first parameter A1 is obtained based on the reference signal resource A1, the second parameter A2 is obtained based on the reference signal resource A2, and the first parameter A3 is obtained based on the reference signal resource A3.

In one possible implementation, the reference signal resource indication information included in the channel state information report corresponds to the plurality of carriers, respectively, and the subsequent UE1 reports the reference signal resource indication information corresponding to the plurality of carriers to the network device 1.

In another possible implementation manner, in order to save the overhead consumed by the subsequent UE1 to report the reference signal resource indication information to the network device 1, the channel state information report includes only: the reference signal resource indication information corresponding to the reference carrier is the same as the reference signal resource indication information of the reference carrier by default, namely, the reference signal resource indication information corresponding to the reference carrier is shared by the rest carrier and the reference carrier, the subsequent UE1 only reports the reference signal resource indication information corresponding to the reference carrier to the network equipment 1, and the reference signal resource indications corresponding to a plurality of carriers are not required to be reported to the network equipment 1, so that the cost consumed by the UE1 for reporting the reference signal resource indication information to the network equipment 1 is saved.

The reference carrier may be a carrier with highest priority among the plurality of carriers, or a carrier with a smallest carrier number, or one carrier among the plurality of carriers determined in advance.

In one possible implementation, the order of the first parameters in the multi-joint carrier CSI report is associated with the priorities of the corresponding carriers, i.e. the UE1 orders the first parameters corresponding to the plurality of carriers according to the priorities of the plurality of carriers.

Illustratively, the network device 1 configures priorities of the plurality of carriers, and stores the configuration of the priorities of the plurality of carriers to the CSI report configuration and then transmits the configuration to the UE1.UE1 orders the first parameters of the plurality of carriers according to the priorities of the plurality of carriers in the CSI reporting configuration. Specifically, the UE1 sequentially arranges the first parameters corresponding to the multiple carriers in the multi-joint carrier CSI report according to the order of the priorities of the multiple carriers from high to low.

Illustratively, the priorities of the plurality of carriers are related to the carrier sequence numbers, and the priority of the carrier with the smallest carrier sequence number is the highest, i.e. the smaller the carrier sequence number is, the higher the priority of the carrier. Specifically, the UE1 sequentially arranges the first parameters corresponding to the multiple carriers in the multi-joint carrier CSI report according to the order from small to large of the carrier numbers of the multiple carriers.

It should be noted that, the first parameters corresponding to the multiple carriers may also be sequentially arranged in the multi-joint carrier CSI report according to the order of the priorities of the multiple carriers from low to high.

In one possible implementation manner, among first parameters respectively corresponding to a plurality of carriers included in the channel state information report, one first parameter corresponding to one carrier is represented in the form of a value of the first parameter, the value of the first parameter is defined as an absolute value, and all remaining first parameters are represented in the form of a differential value from the absolute value. For example: the channel state information report includes 1L 1-RSRP corresponding to carrier a, 1L 1-RSRP corresponding to carrier b, and 1L 1-RSRP corresponding to carrier c, wherein 1L 1-RSRP corresponding to carrier a is represented in the form of its own value, and the remaining 1L 1-RSRP corresponding to carrier b and 1L 1-RSRP corresponding to carrier c are represented in the form of differential values of the values of 1L 1-RSRP corresponding to carrier a. The representation forms of the first parameters corresponding to the plurality of carriers in the channel state information report do not need to be represented in the form of actual values, so that the cost consumed by measuring the channel to obtain the first parameters can be effectively saved.

To facilitate understanding of the representation of the first parameters corresponding to the plurality of carriers in the channel state information report, the following is exemplified in connection with table 1. The first parameter in the channel state information report is L1-RSRP, the plurality of carriers includes carrier d, carrier e, carrier f, and the channel state information report includes 3L 1-RSRP (L1-RSRP 1, L1-RSRP2, and L1-RSRP3, respectively) corresponding to carrier d, 3L 1-RSRP (L1-RSRP 4, L1-RSRP5, and L1-RSRP6, respectively) corresponding to carrier e, and 3L 1-RSRP (L1-RSRP 7, L1-RSRP8, and L1-RSRP9, respectively) corresponding to carrier f. Specifically, the 9L 1-RSRP are shown in Table 1.

TABLE 1

As shown in table 1, wherein the L1-RSRP1 corresponding to the carrier d is expressed in the form of an actual value "-100", and the value "-100" of the L1-RSRP1 is defined as an absolute value. The actual value of L1-RSRP2 corresponding to carrier d is "-90", and is expressed in the form of a difference value "+10" from the absolute value in the channel state information report, that is, the actual value of L1-RSRP 2=absolute value+the difference value of L1-RSRP2 in the channel state information report. The actual value of L1-RSRP3 corresponding to carrier d is "-80", and is expressed in the form of a difference value "+20" from the absolute value in the channel state information report. The actual value of L1-RSRP6 corresponding to carrier e is "-110", and is represented in the form of a differential value of "-10" from the absolute value in the channel state information report. The actual data of the L1-RSRP8 corresponding to the carrier f is "-120", and the actual data is represented as a differential value of "-20" from the absolute value in the channel state information report. The differential value representation of the L1-RSRP not described in detail in the rest of Table 1 is similar to that of the L1-RSRP described above, and is not described in detail herein.

The absolute value of the first parameters corresponding to the plurality of carriers included in the channel state information report is an actual value of one first parameter corresponding to the reference carrier. The reference carrier may be a carrier with highest priority among the plurality of carriers, or a carrier with a smallest carrier number, or one carrier among the plurality of carriers determined in advance.

In one possible implementation manner, the channel state information report includes second parameters corresponding to the plurality of carriers, where the second parameters include: rank Indicator (RI), channel Quality Indicator (CQI), and/or Precoding Matrix Indicator (PMI). Specifically, in response to receiving the channel state information report configuration, based on a reference signal resource set corresponding to a plurality of carriers indicated by second indication information in the signal state information report configuration, reference signal resources included in the reference signal resource set may be transmitted on a plurality of antenna ports, the UE1 obtains channel state information corresponding to the plurality of carriers based on measurement of the reference signal resource set, and evaluates, according to the channel state information, the number of spatial multiplexing data streams, modulation coding modes and precoding modes of a downlink transmission channel most suitable in the current environment, and these information are fed back to the network device through RI, CQI and PMI, respectively. In general, in the channel state information report, each carrier includes at least one RI and one CQI.

The Rank Indicator (RI) is used to indicate the number of spatial multiplexing data streams supported by the current channel, that is, the user terminal informs the network device of the number of spatial multiplexing data streams that can be supported under the current channel condition through the RI, so that the network device determines the number of data streams for transmission under the current channel condition based on the RI, which is helpful for improving the data throughput, thereby realizing better performance of the communication system.

The channel quality indicator (Channel Quality Indicator, CQI) is an information indication of channel quality, and is used for indicating the quality of a current channel, the larger the value of the CQI is, the better the quality of the current channel is represented, that is, the user terminal informs the network device of the transmission rate and reliability that can be achieved under the current channel condition through the CQI, so that the network device can determine a proper modulation scheme and coding rate under the current channel condition based on the CQI, which is helpful for improving the data throughput, and thus better performance of the communication system is achieved.

The precoding matrix indicator (Precoding Matrix Indicator, PMI) is used for indicating the adopted precoding matrix, that is, the user terminal informs the network device of the optimal precoding strategy under the current channel condition through the PMI, so that the network device selects the appropriate precoding strategy under the current channel condition based on the PMI, and reduces interference and enhances the expected signal by selecting the most appropriate precoding matrix, thereby realizing better performance of the communication system.

In one possible implementation, the channel state information report further includes wideband precoding information associated with multiple carriers, that is, multiple carriers share the same wideband precoding information, and the subsequent UE1 reports one bandwidth precoding information associated with multiple carriers, which further saves the overhead consumed by the UE1 in feeding back the channel state information report.

In some cases, due to selective fading of the channel, the channel may be different in different frequency domain ranges, which results in different precoding information being used by the channel, and thus the terminal may need to feed back one precoding information per frequency domain range, which may be referred to as sub-band precoding information. In addition, the channels may also share some information in all frequency domain ranges, such as angle information, multipath information, doppler shift information, etc., which may be referred to as wideband precoding information.

In one possible implementation, the wideband precoding information includes: at least one of angle information, multipath information, and doppler shift information.

Angle information refers to the directionality of the electromagnetic waves transmitted or received by the antenna, the broadband beam typically having a range of angles, the angle information describing the angular area covered by the broadband beam. Illustratively, the angle information is measured by a base vector (e.g., a DFT base vector), with different base vectors corresponding to different angles, for example: the user terminal may feed back different base vectors to indicate different angle information.

The multipath information is parameter information for describing multipath effects of the broadband beam, for example: time dispersion parameters, bandwidth, multi-dtex spread, coherence time, fading, etc. Multipath effect (multipath effect): after the electromagnetic wave propagates through different paths, the time for each component field to reach the receiving end is different, and the component fields are mutually overlapped according to respective phases to cause interference, so that the original signal is distorted or an error phenomenon is generated. Illustratively, the multipath information is measured by a base vector (e.g., a DFT base vector), different base vectors corresponding to different multipath information, for example: the terminal may feed back different base vectors to indicate different multipath information.

The multi-dtex frequency shift information is used to describe the frequency offset of the broadband beam received signal due to the velocity of the user terminal's motion. When a user terminal is in motion, a signal received through a broadband thin beam may generate a frequency offset due to a doppler effect, and such a frequency offset may affect demodulation and decoding of the signal, resulting in degradation of communication quality. Illustratively, the Doppler shift information is measured by a base vector (e.g., a DFT base vector), and different base vectors correspond to different Doppler shift information, such as: the user terminal may feed back different basis vectors to indicate different multi-carrier frequency shift information.

In one possible implementation, when the CQI and/or PMI corresponding to the plurality of carriers are included in the channel state information report, the CQI corresponding to the plurality of carriers included in the channel state information report is represented by a form of a subband CQI, and the PMI corresponding to the plurality of carriers is represented by a form of a subband PMI. I.e. the channel state information report includes CQI and/or PMI of the sub-bands corresponding to the plurality of carriers.

For ease of understanding, the division of subbands in embodiments of the present application is described in detail below.

Specifically, the UE1 performs subband division on the combination of multiple carriers to obtain subbands corresponding to the multiple carriers respectively. The number of the sub-bands corresponding to each carrier is one or more, the bandwidths of the carriers are different, and the number of the sub-bands obtained by dividing is different.

Specifically, the multiple carriers are combined according to the frequency and bandwidth of each carrier. It can be simply understood that the multiple carriers are jointly processed to obtain a total carrier, and the frequency band covered by the total carrier includes not only the frequency band covered by the multiple carriers, but also the interval frequency band between each carrier. For example: the multiple carriers include two carriers, the first carrier has a frequency of 400kHz and a bandwidth of 800kHz, and the second carrier has a frequency of 1680kHz and a bandwidth of 800kHz, so that the frequency band covered by the first carrier is 0-800kHz, the frequency band covered by the second carrier is 1280kHz-2080kHz, and the total carrier formed by combining the first carrier and the second carrier covers 0-2080kHz, that is, the frequency band covered by the total carrier includes not only the frequency band covered by the first carrier and the second carrier, but also the interval frequency band between the first carrier and the second carrier is 800kHz-1280kHz.

Wherein the number of Resource Blocks (RBs) contained in each sub-band is the same.

A Resource Block (RB) is a unit for organizing wireless communication resources, and is a time-frequency grid on a physical layer, and is composed of a number of subcarriers (frequency dimension) and a number of Orthogonal Frequency Division Multiplexing (OFDM) symbols (time dimension). Typically, one resource block includes 12 consecutive subcarriers (15 kHz per subcarrier spacing) and 7 consecutive OFDM symbols (about 0.5ms per OFDM symbol spacing), one resource block covers a bandwidth of about 180kHz and a time window of about 3.5 ms.

To facilitate an understanding of the sub-band division by the combination of multiple carriers, an example of this is illustrated in connection with fig. 3. The plurality of carriers includes: carrier a and carrier b. As shown in fig. 3, carrier a and carrier b cover bandwidths of 5 resource blocks, and the frequency of carrier a is smaller than the frequency of carrier b, and the frequency band covered by carrier a is separated from the frequency band covered by carrier b by a bandwidth of 3 resource blocks. And combining the carrier a and the carrier b, and dividing the sub-bands, wherein each divided sub-band comprises 2 resource blocks. The sub-band corresponding to the carrier a comprises a 1 st sub-band, a 2 nd sub-band and a 3 rd sub-band, the sub-band corresponding to the carrier b comprises a 5 th sub-band, a 6 th sub-band and a 7 th sub-band, and the CQI and/or the PMI corresponding to the carrier a are represented by the sub-band CQI and/or the sub-band PMI of the 1 st sub-band, the 2 nd sub-band and the 3 rd sub-band; the RI, CQI, and/or PMI corresponding to the carrier b is represented by a subband CQI, and/or subband PMI of the 5 th subband, the 6 th subband, and the 7 th subband.

Further, the sequence numbers of the plurality of sub-bands obtained by dividing the plurality of carriers after being combined are: ordered based on the order of the frequencies of the plurality of subbands from low to high. As shown in fig. 3, the number of the sub-bands is 1, i.e., the 1 st sub-band, and the number of the sub-band with the highest frequency is 7, i.e., the 7 th sub-band.

Further, among the multiple sub-bands after division, there may be a sub-band (e.g., the 4 th sub-band in fig. 3) without signal transmission, and the sub-band does not need to feed back the corresponding sub-band PMI and/or CQI, i.e., the channel state information report obtained by the UE1 does not include the PMI and/or CQI of the sub-band without signal transmission. Among the divided subbands, there may be subbands (e.g., the 3 rd and 7 th subbands in fig. 3) with part of signal transmission and part of no signal transmission, and the subbands still need feedback of the corresponding subband PMI and/or CQI.

In general, in the channel state information report, each carrier includes at least one RI and one CQI.

In one possible implementation manner, in RI, CQI, and/or PMI respectively corresponding to a plurality of carriers included in the channel state information report, one RI corresponding to one carrier is represented in the form of an actual value of the RI, the actual value of the RI is defined as an RI absolute value, and all remaining RI are represented in the form of a difference value from the RI absolute value; similarly, one CQI corresponding to one carrier is expressed in the form of an actual value of the CQI, the actual value of the CQI is defined as an absolute value of the CQI, and all other CQIs are expressed in the form of a differential value from the absolute value of the CQI; similarly, one PMI corresponding to one carrier is expressed in the form of an actual value of the PMI, the actual value of the PMI is defined as a PMI absolute value, and all other PMIs are expressed in the form of a differential value from the PMI absolute value. For example: the channel state information report includes 1 CQI (a) corresponding to carrier a, 1 CQI (b) corresponding to carrier b, and 1 CQI (c) corresponding to carrier c, wherein CQI (a) is expressed as an actual value of the CQI itself, and the remaining CQI (b) and CQI (c) are expressed as a differential value from the actual value of the CQI (a). The overhead consumed by measuring the channel to obtain RI, CQI and/or PMI can be effectively saved.

In order to facilitate understanding of the representations of RI, CQI, and/or PMI respectively corresponding to the plurality of carriers included in the channel state information report, the following description will be given by way of example with reference to table 2. Here, CQI is described as an example. The plurality of carriers includes carrier d, carrier e and carrier f, and the channel state information report includes 2 CQIs (CQI 1 and CQI2, respectively) corresponding to carrier d, 2 CQIs (CQI 3 and CQI4, respectively) corresponding to carrier e, and 2 CQIs (CQI 5 and CQI6, respectively) corresponding to carrier f. Specifically, the representation of the 6 CQIs is shown in table 2.

TABLE 2

As shown in table 2, wherein CQI1 corresponding to carrier d is expressed in the form of an actual value "4", and the actual value "4" of this CQI1 is defined as the CQI absolute value. The actual value of CQI2 corresponding to carrier d is "3", and is represented in the form of a differential value of "-1" from the absolute value of CQI in the channel state information report, that is, the actual value of CQI 2=the absolute value of cqi+the differential value of CQI2 in the channel state information report. The actual value of CQI3 for carrier e is "6", and is expressed in the form of a differential value "+2" from the absolute value of CQI in the channel state information report. The actual value of CQI5 for carrier f is "2", and is expressed in the form of a differential value of CQI absolute value "-2" in the channel state information report. The differential value representation of CQI not described in detail in the remaining table 2 is similar to that described above, and will not be described again here.

The RI absolute value, the CQI absolute value, and/or the PMI absolute value in the channel state information report are actual values of one RI, CQI, and/or PMI corresponding to the reference carrier. The reference carrier may be a carrier with highest priority among the plurality of carriers, or a carrier with a smallest carrier number, or one carrier among the plurality of carriers determined in advance.

S203, the UE1 feeds back the channel state information report to the network device 1.

In one possible implementation, in the process of feeding back the channel state information report to the network device 1, when there is another CSI report transmitted in the same channel as the channel state information report, the UE1 sequentially feeds back the channel state information report and the other CSI report to the network device 1 according to the priority of the channel state information report and the other CSI report. For example: the UE1 feeds back the channel state information report R1 to the network device 1 through the first channel, meanwhile, the UE1 feeds back the CSI report R2 to the network device 1 through the first channel, and the UE1 feeds back the channel state information report R1 and the CSI report R2 to the network device 1 through the first channel sequentially according to the priorities of the channel state information report R1 and the CSI report R2.

Wherein the priority of CSI reports is associated with the corresponding carrier, for example: the priority of the channel state information report is associated with the highest priority carrier among the plurality of carriers, the priority of the channel state information report is associated with the lowest numbered carrier among the plurality of carriers, and the priority of the channel state information report is associated with the reference carrier among the plurality of carriers.

According to the feedback method for the channel state information report, which is provided by the embodiment of the application, the network equipment 1 sends the channel state information report to the UE1, wherein the first indication information is used for indicating a plurality of carriers, the second indication information is used for indicating a plurality of reference signal resource sets for channel measurement, and the plurality of reference signal resource sets correspond to the plurality of carriers respectively; UE1 obtains a channel state information report based on channel state information report configuration, wherein the channel state information report comprises channel state information corresponding to a plurality of carriers; UE1 feeds back a channel state information report to network device 1. The multi-carrier combined channel state report fed back by the UE1 to the network equipment 1 comprises channel state information corresponding to a plurality of carriers, and the feedback of the channel state information report replaces the feedback of the multi-carrier combined channel state report corresponding to the plurality of carriers to the network equipment 1 in the prior art, so that the cost of the feedback of the channel state information report by the user terminal can be saved, and the normal operation of other tasks of the user terminal can be ensured to a certain extent.

Further, the channel state information report includes first parameters corresponding to the plurality of carriers, and the first parameters may be L1-RSRP and/or L1-SINR, so as to implement feedback of downlink transmission performance of channels corresponding to the plurality of carriers. Further, the channel state information report carries reference signal resource indication information of the reference carrier, that is, the reference signal resource indication information of the reference carrier shared by a plurality of carriers, so that the overhead consumed by the UE1 for feeding back the channel state information report can be saved. Further, the first parameters corresponding to the plurality of carriers included in the channel state information report are expressed in the form of one absolute value and a plurality of differential values, thereby saving the overhead consumed for measurement.

Further, the channel state information report includes second parameters corresponding to the plurality of carriers, where the second parameters include rank indicator, channel quality indicator, and/or precoding matrix indicator, which are helpful for assisting the network device 1 in selecting a suitable number of transmission data streams, modulation scheme and coding rate, and precoding strategy, so as to achieve better performance of the communication system. Further, RI, CQI, PMI corresponding to the multiple carriers can be represented by a subband RI, a subband CQI and a subband PMI, wherein the subbands are obtained by multi-carrier joint division, and feedback of the channel state information report is further realized. Further, RI, CQI, PMI corresponding to the plurality of carriers is expressed in the form of one absolute value and a plurality of differential values, thereby saving the overhead consumed for measurement.

The above S202 mainly describes the information, the information expression manner, and the arrangement order of the information corresponding to the multiple carriers included in the channel state information report in the embodiment of the present application, that is, describes the content of the channel state information report, and describes the process of obtaining the multi-carrier joint SCI report by the UE1, which needs to occupy the number of CPUs and consumed time.

In the process that UE1 obtains the multi-carrier combined CSI report, the number of CSI processing units (CSI Processing Unit, CPU) occupied by UE1 is related to the number of multiple carriers. For example: the number of the CSI processing units occupied by the channel state information of one carrier is P, and the channel state information of N carriers included in the channel state information report is obtained, so that in the process that UE1 obtains the channel state information report, UE1 needs to occupy n×p CSI processing units. Wherein P > 0 and N is a positive integer.

In one possible implementation manner, in the process of reporting the user terminal capability to the network device 1 in advance, the UE1 informs the network device 1 of the number of carriers that one CSI processing unit can process and the number of CSI processing units, and the network device 1 may set the first indication information of the CSI reporting configuration according to the number of carriers that one CSI processing unit can process and the number of CSI processing units.

User terminal capabilities (Terminal Capability) refer to the ability of a computer program or device to perform a particular task or provide a particular function. User terminal capabilities are typically tightly coupled to the hardware and software resources of the user terminal, such as: hardware parameters such as speed, memory size, hard disk capacity, graphics Processing Unit (GPU) performance, and software parameters such as operating system, drivers, and the like.

Wherein, UE1 obtains channel state information corresponding to a plurality of carriers in the channel state information report, and the consumed measurement (calculation) time is related to the number of the plurality of carriers. The measurement time is the time elapsed from the last reference signal received by UE1 to the time when UE1 actually transmits the channel state information report to the transmission channel.

In one possible implementation, when UE1 is a single-core UE, that is, when UE1 needs to perform serial processing to obtain channel state information of multiple carriers, UE1 processes to obtain measurement time of channel state information of one carrier to be T1, and the consumption time of UE1 to obtain channel state information report is T1×n when channel state information of N carriers included in a channel state information report is included.

In one possible implementation manner, when UE1 is a multi-core UE, that is, when UE1 may process and measure channel state information of multiple carriers in parallel, UE1 processes and obtains measurement time of channel state information of one carrier to be T1, and when the carrier is combined with channel state information of N carriers included in the CSI report, UE1 obtains consumption time of the channel state information report to be t1+n by a first offset. Wherein the first offset is related to the user terminal capability of UE 1.

In one possible implementation manner, the number of carriers that can be processed simultaneously is P, the measurement time for processing the channel state information of one carrier by the UE1 is T1, and the consumption time for obtaining the multiple carrier combined CSI report by the UE1 is T1 if N is less than or equal to P. Wherein T1 > 0, N is a positive integer, and P is a positive integer.

Wherein, in the process of obtaining the channel state information report by the UE1, the consumed scheduling time is related to the number of the plurality of carriers. The scheduling time is a time from a scheduling command of receiving a PDCCH transmission by the UE1 to the UE1 transmitting a multi-carrier joint CSI report to a transmission channel (PUSCH or PUCCH).

The physical downlink control channel (Physical Downlink Control Channel, PDCCH) is a downlink channel from the network device to the user terminal, mainly for transmitting scheduling and control information.

The physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) is an uplink channel from the user terminal to the network device, mainly for transmitting user data and control information.

The physical uplink control channel (Physical Uplink Control Channel, PUCCH) is an uplink channel from the user terminal to the network device, mainly for transmitting uplink control information.

In one possible implementation, when UE1 is a single core UE, that is, when UE1 needs to serially schedule and transmit channel state information of multiple carriers, the scheduling time of UE1 for scheduling and transmitting channel state information of one carrier is T2, and the channel state information of N carriers included in the channel state information report, the scheduling time of UE1 for obtaining the channel state information report is T2×n.

In one possible implementation, when UE1 is a multi-core UE, that is, when UE1 may transmit channel state information of multiple carriers in parallel, the scheduling time of UE1 for scheduling transmission of channel state information of one carrier is T2, and the channel state information of N carriers included in the carrier joint CSI report, then UE1 obtains the scheduling time of the channel state information report as t2+n by a second offset. Wherein the second offset is related to the user terminal capability of UE 1.

In one possible implementation manner, the number of carriers capable of simultaneously scheduling transmission is reported to the network user terminal 1 by the UE1 in advance as Q, the scheduling time of the UE1 for scheduling transmission of channel state information of one carrier is T2, and the consumption time of the UE1 for obtaining the multiple carrier combined CSI report is T2 if N is less than or equal to Q. Wherein T2 > 0, N is a positive integer, and Q is a positive integer.

The specific implementation process of the feedback method of the multi-carrier joint channel state information provided in the embodiment of the present application is described in detail above with reference to fig. 2 and 3. The hardware implementation of the network device and the user terminal (UE) is further described below in conjunction with fig. 4 and 5.

A hardware architecture diagram of a network device as shown in fig. 4, where the network device includes: at least one processor 410, at least one memory 420, at least one transceiver 430, at least one network interface 440, and one or more antennas 450. The processor 410, the memory 420, the transceiver 430, and the network interface 440 are connected, for example, by a bus, and in the embodiment of the present application, the connection may include various interfaces, transmission lines, buses, or the like, which is not limited in this embodiment. The antenna 450 is connected to the transceiver 430. The network interface 440 is used to enable the network element to connect with other communication devices via a communication link, e.g. the network interface 440 may comprise a network interface between the network device and a network device in the core network, e.g. an S1 interface, and the network interface may comprise a network interface between the network device and other network devices, e.g. an X2 or Xn interface.

The processor 410 shown in fig. 4 may specifically perform actions processed by a network device in the above method, the memory 420 may perform actions stored in the above method, the transceiver 430 and the antenna 450 may perform transceiving actions in the above method, and the network interface 440 may perform actions for interaction between the network device and the user terminal in the above method.

Processors in embodiments of the present application, such as processor 410, may include, but are not limited to, at least one of: a central processing unit (central processing unit, CPU), microprocessor, digital Signal Processor (DSP), microcontroller (microcontroller unit, MCU), or artificial intelligence processor, each of which may include one or more cores for executing software instructions to perform operations or processes. The processor may be a separate semiconductor chip or may be integrated with other circuits into a single semiconductor chip, for example, may form a SoC (system on a chip) with other circuits (such as codec circuits, hardware acceleration circuits, or various buses and interface circuits), or may be integrated into the ASIC as an ASIC with a built-in processor, where the ASIC with the integrated processor may be packaged separately or may be packaged with other circuits. The processor may further include necessary hardware accelerators, such as field programmable gate arrays (field programmable gate array, FPGAs), PLDs (programmable logic devices), or logic circuits implementing dedicated logic operations, in addition to the cores for executing software instructions to perform the operations or processing.

The memory in the embodiment of the application may include at least one of the following types: read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (random access memory, RAM) or other types of dynamic storage devices that can store information and instructions, and electrically erasable programmable read-only memory (Electrically erasable programmabler-only memory, EEPROM). In some scenarios, the memory may also be, but is not limited to, a compact disk (compact disc read-only memory) or other optical disk storage, optical disk storage (including compact disk, laser disk, optical disk, digital versatile disk, blu-ray disk, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.

The memory 420 may be a stand alone memory coupled to the processor 410. Alternatively, the memory 420 may be integrated with the processor 410, for example within a single chip. The memory 420 can store program codes for implementing the technical solutions of the embodiments of the present application, and the processor 410 controls the execution of the program codes, and various types of executed computer program codes can also be regarded as drivers of the processor 410. For example, the processor 410 is configured to execute computer program codes stored in the memory 420, thereby implementing the technical solutions in the embodiments of the present application.

Transceiver 430 may be used to support the reception or transmission of radio frequency signals between the network element and other devices, and transceiver 430 may be coupled to antenna 450. Transceiver 430 includes a transmitter Tx and a receiver Rx. Specifically, the one or more antennas 450 may receive radio frequency signals, and the receiver Rx of the transceiver 430 is configured to receive the radio frequency signals from the antennas, convert the radio frequency signals into digital baseband signals or digital intermediate frequency signals, and provide the digital baseband signals or digital intermediate frequency signals to the processor 410, so that the processor 410 may perform further processing, such as demodulation processing and decoding processing, on the digital baseband signals or digital intermediate frequency signals. The transmitter Tx in the transceiver 430 is also operative to receive and convert modulated digital baseband signals or digital intermediate frequency signals from the processor 410 to radio frequency signals and transmit the radio frequency signals via the one or more antennas 450. In particular, the receiver Rx may selectively perform one or more steps of down-mixing and analog-to-digital conversion on the radio frequency signal to obtain a digital baseband signal or a digital intermediate frequency signal, where the order of the down-mixing and analog-to-digital conversion is adjustable. The transmitter Tx may selectively perform one or more stages of up-mixing processing and digital-to-analog conversion processing on the modulated digital baseband signal or the digital intermediate frequency signal to obtain a radio frequency signal, and the sequence of the up-mixing processing and the digital-to-analog conversion processing may be adjustable. The digital baseband signal and the digital intermediate frequency signal may be collectively referred to as a digital signal.

As shown in fig. 5, a hardware architecture of a user terminal may include a processor 510, an internal memory 520, an antenna 1, an antenna 2, a mobile communication module 530, a wireless communication module 540, and the like.

It is to be understood that the structure illustrated in this embodiment does not constitute a specific limitation on the UE. In other embodiments, the UE may include more or fewer components than shown, or may combine certain components, or split certain components, or a different arrangement of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

Processor 510 may include one or more processing units, such as: processor 510 may include an application processor (application processor, AP), a modem processor, a graphics processor (graphics processing unit, GPU), an image signal processor (image signal processor, ISP), a controller, a video codec, a digital signal processor (digital signal processor, DSP), a baseband processor, and/or a neural network processor (neural-network processing unit, NPU), etc. Wherein the different processing units may be separate devices or may be integrated in one or more processors.

It should be understood that the connection relationship between the modules illustrated in this embodiment is only illustrative, and does not limit the structure of the UE. In other embodiments of the present application, the UE may also use different interfacing manners in the foregoing embodiments, or a combination of multiple interfacing manners.

Internal memory 520 may be used to store computer-executable program code that includes instructions. The processor 510 performs various functional applications of the UE and data processing by executing instructions stored in the internal memory 520. The internal memory 520 may include a storage program area and a storage data area. The storage program area may store an operating system, an application program required for at least one function, and the like. The storage data area may store data created during use of the UE, such as channel state information, and the like. In addition, the internal memory 520 may include high-speed random access memory, and may also include nonvolatile memory, such as at least one magnetic disk storage device, flash memory device, universal flash memory (universal flash storage, UFS), and the like. The processor 510 performs various functions of the UE and data processing by executing instructions stored in the internal memory 520 and/or instructions stored in a memory provided in the processor.

The wireless communication function of the UE may be implemented by the antenna 1, the antenna 2, the mobile communication module 530, the wireless communication module 540, a modem processor, a baseband processor, and the like.

The antennas 1 and 2 are used for transmitting and receiving electromagnetic wave signals. Each antenna in the UE may be used to cover a single or multiple communication bands. Different antennas may also be multiplexed to improve the utilization of the antennas. For example: the antenna 1 may be multiplexed into a diversity antenna of a wireless local area network. In other embodiments, the antenna may be used in conjunction with a tuning switch.

The mobile communication module 530 may provide a solution for wireless communication including 2G/3G/4G/5G, etc., applied on the UE. The mobile communication module 530 may include at least one filter, switch, power amplifier, low noise amplifier (low noise amplifier, LNA), etc. The mobile communication module 530 may receive electromagnetic waves from the antenna 1, perform processes such as filtering, amplifying, and the like on the received electromagnetic waves, and transmit the processed electromagnetic waves to the modem processor for demodulation. The mobile communication module 530 may amplify the signal modulated by the modem processor, and convert the signal into electromagnetic waves through the antenna 1 to radiate the electromagnetic waves. In some embodiments, at least some of the functional modules of the mobile communication module 530 may be disposed in the processor 510. In some embodiments, at least some of the functional modules of the mobile communication module 530 may be disposed in the same device as at least some of the modules of the processor 510.

The wireless communication module 540 may provide solutions for wireless communication including wireless local area network (wireless local area networks, WLAN) (e.g., wireless fidelity (wireless fidelity, wi-Fi) network), bluetooth (BT), global navigation satellite system (global navigation satellite system, GNSS), frequency modulation (frequency modulation, FM), near field wireless communication technology (near field communication, NFC), infrared technology (IR), etc. for application on a user device. The wireless communication module 540 may be one or more devices integrating at least one communication processing module. The wireless communication module 540 receives electromagnetic waves via the antenna 2, modulates the electromagnetic wave signals, filters the electromagnetic wave signals, and transmits the processed signals to the processor 510. The wireless communication module 540 may also receive a signal to be transmitted from the processor 510, frequency modulate it, amplify it, and convert it to electromagnetic waves for radiation via the antenna 2.

In addition, an operating system is run on the components. Such as iOS operating systems, android operating systems, windows operating systems, etc. Running applications may be installed on the operating system. It can be clearly understood by those skilled in the art that, for convenience and brevity, any explanation and beneficial effects of the relevant content in the UE provided above may refer to the corresponding method embodiments provided above, and are not repeated herein.

Further, embodiments of the present application provide a computer-readable storage medium having instructions stored therein, which when executed on one or more computing devices, cause the one or more computing devices to perform the communication method described in the above embodiments.

Further, embodiments of the present application provide a computer program product that, when executed by one or more computing devices, performs any of the foregoing communication methods. The computer program product may be a software installation package which may be downloaded and executed on a computer in case any of the aforementioned communication methods is required.

The foregoing is merely a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A feedback method for reporting channel state information, the method being applied to a user terminal, the method comprising:

Receiving channel state information report configuration sent by network equipment; the channel state information reporting configuration comprises first indication information and second indication information; the first indication information is used for indicating a plurality of carriers; the second indication information is used for indicating a plurality of reference signal resource sets for channel measurement, and the plurality of reference signal resource sets respectively correspond to the plurality of carriers;

obtaining a channel state information report based on the channel state information report configuration; the channel state information report comprises channel state information corresponding to a plurality of carriers indicated by the first indication information, wherein the channel state information corresponding to the plurality of carriers is obtained based on a plurality of reference signal resource sets indicated by the second indication information;

and feeding back the channel state information report to the network equipment.

2. The method of claim 1, wherein the channel state information report comprises: a first parameter corresponding to the plurality of carriers; the first parameter includes at least one of a reference signal received power L1-RSRP and a reference signal to interference plus noise ratio L1-SINR.

3. The method of claim 2, wherein the channel state information report further comprises: reference signal resource indication information CRI corresponding to a reference carrier; the reference carrier is one of the plurality of carriers.

4. A method according to claim 3, wherein the number of first parameters corresponding to each carrier in the channel state information report is the same.

5. The method of claim 2, wherein the order of arrangement of the first parameters corresponding to the plurality of carriers is associated with priorities of the plurality of carriers;

the arrangement sequence of the first parameters corresponding to the plurality of carriers is obtained by the following way:

and sequencing the first parameters corresponding to the plurality of carriers according to the order of the priority of the plurality of carriers from high to low.

6. The method of claim 5, wherein the priority of the plurality of carriers is related to a sequence number of the plurality of carriers; the smaller the serial number of the carrier, the higher the priority of the carrier.

7. The method according to claim 2, wherein the first parameters corresponding to the plurality of carriers include: a first parameter in the form of an actual value, and a plurality of first parameters in the form of differential values from the actual value.

8. The method of claim 1, wherein the channel state information report comprises: a second parameter corresponding to the plurality of carriers; the second parameter includes at least one of a rank indicator RI, a channel quality indicator CQI, and a precoding matrix indicator PMI.

9. The method according to claim 8, wherein when the second parameter comprises CQI and/or PMI, the CQI and/or PMI corresponding to the plurality of carriers are represented by a form of corresponding subband parameters;

when the second parameter is CQI, the second parameters corresponding to the plurality of carriers are expressed in the form of corresponding sub-band CQI;

when the second parameter is PMI, the second parameters corresponding to the plurality of carriers are represented by the form of corresponding subband PMIs.

10. The method of claim 9, wherein the subbands are obtained by:

combining the plurality of carriers to obtain a total carrier corresponding to the plurality of carriers; the frequency band covered by the total carrier comprises: the frequency bands covered by the plurality of carriers and the interval frequency bands among the plurality of carriers;

dividing the total carrier into sub-bands based on a preset number of resource blocks to obtain sub-bands corresponding to the plurality of carriers respectively; the number of resource blocks contained in each of the subbands is the same.

11. The method of claim 8, wherein when the second parameter comprises CQI, the CQIs for the plurality of carriers comprise: one CQI in the form of an actual value, and a plurality of CQIs in the form of differential values from the actual value.

12. The method of claim 8, wherein when the second parameter comprises a PMI, the channel state information report further comprises: wideband precoding information associated with the plurality of carriers; the wideband precoding information includes: at least one of angle information, multipath information, and doppler shift information.

13. A feedback method for reporting channel state information, the method being applied to a network device, the method comprising:

transmitting a channel state information report configuration to a user terminal so that the user terminal obtains a channel state information report based on the channel state information configuration; the channel state information reporting configuration comprises first indication information and second indication information; the first indication information is used for indicating a plurality of carriers; the second indication information is used for indicating a plurality of reference signal resource sets for channel measurement, and the plurality of reference signal resource sets respectively correspond to the plurality of carriers; the channel state information report comprises channel state information corresponding to a plurality of carriers indicated by the first indication information, wherein the channel state information corresponding to the plurality of carriers is obtained based on a plurality of reference signal resource sets indicated by the second indication information;

And receiving the channel state information report fed back by the user terminal.

14. A user terminal, comprising: a processor and a memory;

the memory stores computer-executable instructions;

the processor executing computer-executable instructions stored in the memory, causing the processor to perform the method of any one of claims 1-12.

15. A network device, comprising:

a transceiver for performing the method of claim 13.