CN114071553A

CN114071553A - CSI reporting method, terminal and network side equipment

Info

Publication number: CN114071553A
Application number: CN202010747184.3A
Authority: CN
Inventors: 吴凯; 李娜
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2022-02-18

Abstract

The embodiment of the application discloses a CSI reporting method, a terminal and network side equipment, which can solve the problem that a non-connected terminal cannot report CSI. The method comprises the following steps: and the terminal sends the CSI report through the PUSCH of the MSG-A in the random access process. In the embodiment of the application, the terminal can perform CSI measurement and report, so that the network side equipment can acquire the channel state information as early as possible, schedule the terminal by using more accurate parameters, and improve the communication efficiency.

Description

CSI reporting method, terminal and network side equipment

Technical Field

The present application belongs to the field of communication technologies, and in particular, to a method for reporting Channel State Information (CSI), a terminal, and a network side device.

Background

The Channel State Information-Reference Signal (CSI-RS) may be used for synchronization of a terminal, CSI measurement, Radio Resource Management (RRM) measurement, Radio link monitoring, beam failure detection, beam Management, and Automatic Gain Control (AGC), and the like.

The CSI-RS in the related technology can only be configured and used for the terminal in the connection state, and the terminal in the connection state can measure based on the CSI-RS and report the CSI. For a terminal in an unconnected state (idle/inactive) state, CSI reporting cannot be performed at present.

Disclosure of Invention

An object of the embodiments of the present application is to provide a CSI reporting method, a terminal, and a network side device, which can solve a problem that a non-connected terminal cannot perform CSI reporting.

In order to solve the technical problem, the present application is implemented as follows:

in a first aspect, a CSI reporting method is provided, where the method includes: and the terminal sends the CSI report through a Physical Uplink Shared Channel (PUSCH) of the MSG-A in the random access process.

In a second aspect, a CSI reporting method is provided, where the method includes: and the network side equipment receives the CSI report through the PUSCH of the MSG-A in the random access process.

In a third aspect, a terminal is provided, including: and the sending module is used for sending the CSI report through the PUSCH of the MSG-A in the random access process.

In a fourth aspect, a network-side device is provided, including: and the receiving module is used for receiving the CSI report through the PUSCH of the MSG-A in the random access process.

In a fifth aspect, there is provided a terminal comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, which when executed by the processor, implement the method according to the first aspect.

In a sixth aspect, a network-side device is provided, which comprises a processor, a memory, and a program or instructions stored on the memory and executable on the processor, and when executed by the processor, the program or instructions implement the method according to the second aspect.

In a seventh aspect, there is provided a readable storage medium on which is stored a program or instructions which, when executed by a processor, implements the method of the first aspect or implements the method of the second aspect.

In an eighth aspect, there is provided a chip comprising a processor and a communication interface, the communication interface being coupled to the processor, the processor being configured to execute a program or instructions to implement the method according to the first aspect, or to implement the method according to the second aspect.

In the embodiment of the application, the terminal can send the CSI report through the PUSCH of the MSG-A in the random access process, so that the terminal can perform CSI measurement and report, and therefore, the network side equipment can acquire the channel state information as early as possible, and the terminal is scheduled by using more accurate parameters, so that the communication efficiency is improved.

Drawings

Fig. 1 is a block diagram of a wireless communication system according to one embodiment of the present application;

fig. 2 is a schematic flow diagram of a CSI reporting method according to an embodiment of the present application;

fig. 3 is a schematic flow chart diagram of a CSI reporting method according to another embodiment of the present application;

FIG. 4 is a block diagram of a terminal according to one embodiment of the present application;

fig. 5 is a schematic structural diagram of a network-side device according to another embodiment of the present application;

FIG. 6 is a schematic block diagram of a communication device according to one embodiment of the present application;

FIG. 7 is a block diagram of a terminal according to one embodiment of the present application;

fig. 8 is a schematic structural diagram of a network-side device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used are interchangeable under appropriate circumstances such that embodiments of the application can be practiced in sequences other than those illustrated or described herein, and the terms "first" and "second" used herein generally do not denote any order, nor do they denote any order, for example, the first object may be one or more. In addition, "and/or" in the specification and the claims means at least one of connected objects, and a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

It is noted that the techniques described in the embodiments of the present application are not limited to Long Term Evolution (LTE)/LTE Evolution (LTE-Advanced) systems, but may also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described techniques can be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies. However, the following description describes a New Radio (NR) system for purposes of example, and NR terminology is used in much of the description below, although the techniques may also be applied to applications other than NR system applications, such as 6 th generation (6 th generation)^thGeneration, 6G) communication system.

Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. The wireless communication system includes a terminal 11 and a network-side device 12. Wherein, the terminal 11 may also be called as a terminal Device or a User Equipment (UE), the terminal 11 may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer) or a notebook Computer, a Personal Digital Assistant (PDA), a palmtop Computer, a netbook, a super-Mobile Personal Computer (UMPC), a Mobile Internet Device (MID), a Wearable Device (Wearable Device) or a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), and other terminal side devices, the Wearable Device includes: bracelets, earphones, glasses and the like. It should be noted that the embodiment of the present application does not limit the specific type of the terminal 11. The network-side device 12 may be a Base Station or a core network, wherein the Base Station may be referred to as a node B, an evolved node B, an access Point, a Base Transceiver Station (BTS), a radio Base Station, a radio Transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a node B, an evolved node B (eNB), a next generation node B (gnb), a home node B, a home evolved node B (hbo), a WLAN access Point, a WiFi node, a Transmission Receiving Point (TRP), or some other suitable terminology in the field, as long as the same technical effect is achieved, the Base Station is not limited to a specific technical vocabulary, and it should be noted that, in the embodiment of the present application, only the Base Station in the NR system is taken as an example, but the specific type of the Base Station is not limited.

The method, the terminal, and the network side device for reporting Channel State Information (CSI) provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.

As shown in fig. 2, an embodiment of the present application provides a CSI reporting method 200, which may be performed by a terminal, in other words, by software or hardware installed in the terminal, and the method includes the following steps.

S202: and the terminal sends the CSI report through a Physical Uplink Shared Channel (PUSCH) of the MSG-A in the random access process.

The random access procedure mentioned in this embodiment may be a two-step random access procedure. In the two-step Random Access process, the terminal firstly sends an MSG-A, wherein the MSG-A consists of a Physical Random Access Channel (PRACH) Random Access preamble (preamble) and a PUSCH. The transmission information of the PUSCH may include information such as a terminal identifier (e.g., UE-ID) in addition to the CSI report.

The CSI report may be obtained by the terminal in a non-connected State (e.g., idle/inactive) and measured based on at least one of a Channel State Information-Reference Signal (CSI-RS) and a Synchronization Signal/PBCH Block (SSB). That is, before the terminal sends the CSI report through the PUSCH of the MSG-a in the random access procedure, the terminal is in an idle state or an inactive state.

The CSI report may include at least one of: channel Quality Indicator (CQI), Precoding Matrix Indicator (PMI), Rank Indicator (RI), Layer-to-Layer Reference Signal received Power (Layer1-Reference Signal Receiving Power, RSRP, L1-RSRP), CSI Reference Signal resource Indicator.

Optionally, the CSI report is a CSI report based on RI ═ 1, that is, the CSI report is calculated based on layer1 transmission.

Optionally, the CSI report is a wideband CSI report. In another example, the CSI report is a subband-based report, and the frequency domain width of each subband is a preset number of Resource Blocks (RBs); the CSI report is based on M subbands with the best or worst signal quality.

Optionally, the CSI report is obtained by measuring, by the terminal, using the SSB or the CSI-RS as an interference measurement resource; or the CSI report is obtained by measuring the interference measurement resource by using the SSB which meets the Quasi Co-Location (QCL) relation with the CSI-RS by the terminal; or the CSI report is obtained by measuring the CSI-RS which satisfies the QCL relation with the SSB by using the terminal as an interference measurement resource.

The measurement resource corresponding to the CSI report mentioned in the embodiments of the present application includes one of the following:

1) and the CSI-RS which satisfies QCL relation with the SSB selected by the terminal, wherein the SSB is associated with the MSG-A. That is, the CSI measurement resources in this example are: and the CSI-RS which is selected by the terminal and used for initiating the RACH process and satisfies the QCL relation.

The criterion for the terminal to select the physical random access channel transmission opportunity (PRACH transmission opportunity, abbreviated as RO) resource is as follows: the terminal selects an RO resource corresponding to the SSB with Reference Signal Receiving Power (RSRP) higher than a preset threshold, and initiates the PRACH on the corresponding RO resource. And different SSBs may be associated with different ROs and/or different preamble sequences. Therefore, the above-mentioned SSB is associated with MSG-a, and may be that the SSB is associated with PRACH (e.g. preamble) in MSG-a or the SSB is associated with PUSCH in MSG-a.

2) And the CSI-RS indicated by the network side equipment.

Optionally, the network side device may indicate the CSI-RS mentioned in 2) above by at least one of: system information, Control channels, paging Control channels, signaling in a Physical Downlink Shared Channel (PDSCH) scheduled by the paging Control channels, Radio Resource Control (RRC) signaling, media access Control unit (MAC-CE) commands, and the like.

According to the CSI reporting method provided by the embodiment of the application, the terminal can send the CSI report through the PUSCH of the MSG-A in the random access process, so that the terminal can perform CSI measurement and reporting, therefore, network side equipment can acquire channel state information as early as possible, the terminal is scheduled by using more accurate parameters, and the communication efficiency is improved.

In embodiment 200, it is mentioned that the terminal may send the CSI report through the PUSCH of MSG-a, and actually, the terminal may be configured according to the network side device, or perform S202 again if a certain condition is satisfied.

In one example, the terminal may receive configuration information from the network side device before S202, where the configuration information is used to configure the terminal to send a CSI report through a PUSCH of MSG-a in a random access procedure. In this way, S202 may specifically be to send the CSI report through the PUSCH of MSG-a in the random access procedure according to the configuration of the network side device (for example, according to the configuration information).

In another example, a terminal in a non-connected state may send a CSI report through a PUSCH of an MSG-a in a random access procedure if a preset condition is satisfied; wherein the preset condition comprises at least one of the following conditions: the measured Reference Signal Receiving Power (RSRP), Reference Signal Receiving Quality (RSRQ), or path loss (path) satisfies a first condition; the Transport Block Size (TBS) or code rate of the actual transmission of the PUSCH of MSG-a satisfies the second condition.

Specifically, for example, the preset condition may be at least one of the following conditions: the measured RSRP is lower than or higher than a certain preset value, the measured RSRQ is lower than or higher than a certain preset value, and the measured path loss is lower than or higher than a certain preset value. For another example, the preset condition may be at least one of: the TBS of the actual transmission of the PUSCH of the MSG-A is smaller than a certain predetermined value, and the code rate of the actual transmission of the PUSCH of the MSG-A is smaller than a certain predetermined value. It can be understood that when the TBS is smaller than a certain predetermined value or the actual transmission code rate of the PUSCH is smaller than a certain predetermined value, it usually means that the PUSCH of the MSG-a also includes remaining resources, and the transmission of the CSI report can be realized through these remaining resources, thereby improving the utilization rate of the resources.

In the foregoing embodiments, the CSI report is sent through the PUSCH of the MSG-a, and optionally, the PUSCH corresponds to first indication information, where the first indication information is used to indicate, to the network side device, that the PUSCH includes (or carries) the CSI report.

In one example, the first indication information is indicated by a preset bit in the PUSCH.

In another example, the first indication information is a preset logical channel identifier.

In another example, the first indication information is a preset preamble, the preset preamble and the PUSCH are both included in the MSG-a, and the network side device may determine that the PUSCH includes the CSI report when receiving the preset preamble.

Optionally, the preamble in the MSG-a used in the random access procedure mentioned in the foregoing embodiments is specific, that is, the terminal uses the specific preamble when the MSG-a transmits the CSI report.

In one example, the particular preamble is associated with an SSB or a CSI-RS associated with a random access channel opportunity (RO) that transmitted the particular preamble. Optionally, the specific preambles for different SSBs are different, and/or the specific preambles for different CSI-RSs are different.

In another example, the specific preamble may also be indicated by the network side device, for example, the network side device indicates the number of the specific preamble in system information or RRC signaling.

Optionally, the CSI report mentioned in the embodiments of the present application may be transmitted in an independent coding manner with a first message, where the first message is a message other than the CSI report in the PUSCH.

In this example, before S202, the terminal may further receive second indication information, where the second indication information is used to indicate the code rate of the CSI report. The second indication information may be system information or RRC signaling, and the network side device may specifically indicate in a beta-offset manner. The beta-offset is a parameter for determining the transmission resource and code rate of the CSI.

In another example, in a case that the network side device does not configure the second indication information for the terminal, or the second indication information is a first specific value (e.g., beta-offset is 0), the terminal does not send the CSI report through the PUSCH.

Optionally, in each of the foregoing embodiments, since the network side device may not be able to successfully detect the PUSCH of the MSG-a, for example, the network only detects the preamble in the MSG-a, and does not detect the PUSCH, the network side device does not send the MSG-B to the terminal, but sends a Random Access Response (RAR).

After the terminal detects the RAR, the terminal needs to send PUSCH, namely MSG3, according to the indication in the RAR. Therefore, when the terminal transmits the CSI report on the PUSCH in the MSG-a, and the terminal does not detect the Radio Network Temporary Identity (RNTI), a Physical Downlink Control Channel (PDCCH) scrambled by a Random Access-Radio Network Temporary Identity (RA-RNTI) is detected, and the RA-RNTI corresponds to the preamble used by the MSG-a for terminal transmission and the time-frequency resource used for transmission. And the terminal transmits CSI report in the PUSCH scheduled by the RAR. Or whether the CSI report is performed is still indicated by the network side device, and the network indicates whether the terminal needs to transmit the CSI report in the scheduled PUSCH (i.e., MSG3) through a CSI request (request) field in an uplink scheduling (UL grant) of the RAR.

Based on the above description, the foregoing embodiments further include the following steps: transmitting the CSI report in MSG3 if at least one of the following is satisfied:

1) a CSI report is sent over the PUSCH of the MSG-a, the method of S202 performed.

2) The MSG-B-RNTI scrambled PDCCH is not detected.

3) And detecting the PDCCH scrambled by RA-RNTI, wherein the RA-RNTI corresponds to the time-frequency resource of preamble and/or RO sent in the random access process.

4) The PDCCH scrambled by the RA-RNTI is detected, and System Frame Number (SFN) information contained in the PDCCH corresponds to the System Frame Number where the preamble sent in the random access process is located. The sfn information may be last bits (last significant bits) of the sfn, and may be 2 bits.

5) And indicating the terminal to report the CSI by a CSI request domain in the RAR, wherein the RAR is scheduled by the PDCCH scrambled by the RA-RNTI.

6) And the network side equipment indicates the terminal to carry out CSI reporting in a high-level signaling. For example, the network side device is configured with beta-offset, and the beta-offset is a specific value, for example, the beta-offset is greater than or equal to 1.

Optionally, the CSI report sent in MSG3 and the CSI report sent in PUSCH of MSG-a use the same transmission parameters, and the transmission parameters include at least one of:

1) whether the CSI report is an independent coded transmission.

2) The CSI reports parameters of the code rate of the transmission. E.g., MCS, beta-offset, etc.

To describe the CSI reporting method provided in this embodiment in detail, several specific embodiments will be described below.

Example one

In this embodiment, the terminal sends the CSI report through the PUSCH of MSG-a in the two-step random access procedure.

In this embodiment, the network side device may instruct the terminal to report the CSI report in the PUSCH of the MSG-a through higher layer signaling, for example, system information or RRC signaling. Or, whether the terminal reports the CSI report in the PUSCH of the MSG-a is determined according to a preset condition, for example, when the RSRQ, RSRP, or pathloss value measured by the terminal is lower than or higher than a preset threshold, the terminal includes the CSI report in the MSG-a.

In this embodiment, the CSI report reported by the terminal includes at least one of CQI, PMI, RI, L1-RSRP, CRI, and the like, and the specific reported content may be configured by system information or RRC signaling.

Optionally, the CQI and PMI of the CSI report may be reported based on RI ═ 1.

Optionally, the CSI report may be a wideband report; or reporting sub-bands, wherein the width of the frequency domain of each sub-band is the preset RB number; or reporting for the M best or worst subbands.

In this embodiment, the CSI measurement resource for CSI reporting may be an SSB and/or a CSI-RS, or a CSI-RS is a SSB quasi co-located with an SSB (QCL).

The CSI-RS may be configured by the network, or a paging message (paging) indicates the CSI-RS to be transmitted, where the paging message (paging) includes a paging PDCCH or a paging PDSCH.

In this embodiment, the interference measurement resource reported by the CSI may be an SSB and/or a CSI-RS.

The above-mentioned CSI measurement resources or interference measurement resources may be configured by the network through system information or RRC display.

In this embodiment, when reporting the CSI, the terminal may simultaneously include a CSI reporting identifier (corresponding to the foregoing first indication information), for example, a preset bit or logical channel information, and the terminal is used for the network side device to determine that the PUSCH includes the CSI report.

Alternatively, if the CSI report is included in MSG-A or MSG-3 and MSGA or MSG3 is repeatedly transmitted, the CSI report may be included in only a portion of MSG-A or MSG-3, e.g., the last N transmissions, 1 ≦ N ≦ N, N being the number of times the network indicated the MSGA or MSG3 repeated transmissions.

Example two

For the Preamble configured by the network side device, the network side device indicates a part of the Preamble therein, for example, the network indicates an index of the part of the Preamble, and if the Preamble sent by the terminal belongs to the indicated part of the Preamble, the CSI report may be transmitted in MSG-a; otherwise, no CSI report is transmitted.

Alternatively, the preambles of different SSBs or CSI-RS associations may be different. For example, the set of preamble indices associated with each SSB or CSI-RS may be different. For example, one cell has 4 SSBs or CSI-RSs, and the associated preamble indexes are respectively 0-16 for the preamble index associated with SSB # 0; the preamble index associated with SSB #1 is 17-32; the preamble index associated with SSB #3 is 33-48; SSB #4 has associated preamble indices of 49-64. For SSB #0, preamble indexes associated with SSB #0 are 0 to (X-1) which are preamble indexes not used for CSI reporting, and preamble indexes associated with SB #0 are X to Y which correspond to preamble indexes used for CSI reporting, where X < Y is not more than 16.

Optionally, different preamble indexes are used to correspond to different sets of CSI report amounts, for example, a first preamble set corresponds to CQI, PMI reporting, a second preamble set corresponds to L1-RSRP reporting, and the like.

EXAMPLE III

In this embodiment, the CSI report of the terminal in the MSG-a may be encoded in cascade with other parts of the MSG-a or encoded independently, and the code rate is indicated by higher layer signaling. In the case of independent coding, the network may indicate the CSI corresponding beta-offset value for determining the resource size of the CSI occupied in MSG-a, e.g., for determining the number of symbols corresponding to the CSI.

Because the network side device may not be able to successfully detect the PUSCH of the MSG-a, for example, the network side device only detects the preamble in the MSG-a, and does not detect the PUSCH, the network side device does not transmit the MSG-B to the terminal, but sends the RAR.

After the terminal detects the RAR, the terminal needs to send PUSCH, namely MSG3, according to the indication in the RAR. Therefore, when the terminal transmits the CSI report in the MSG-A and the terminal does not detect the MSGB-RNTI, the PDCCH scrambled by the RA-RNTI corresponding to the preamble used by the MSG-A transmitted by the terminal and the time-frequency resource used for transmission is detected.

And the terminal transmits CSI report in the PUSCH scheduled by the RAR. Or whether reporting is still indicated by the network, the network side device indicates whether the terminal needs to transmit the CSI report in the scheduled PUSCH (i.e. MSG3) through the CSI request field in the UL grant of the RAR.

Preferably, the CSI report in the RAR scheduled PUSCH uses the same coding parameters in MSG-a, such as the same code rate or the same beta-offset. Or the parameters are independent parameters and are configured by the network side equipment.

The CSI reporting method according to the embodiment of the present application is described in detail above with reference to fig. 2. A CSI reporting method according to another embodiment of the present application will be described in detail with reference to fig. 3. It is to be understood that the interaction between the network side device and the terminal described from the network side device is the same as that described at the terminal side in the method shown in fig. 2, and the related description is appropriately omitted to avoid redundancy.

Fig. 3 is a schematic view of an implementation flow of a CSI reporting method according to an embodiment of the present application, which may be applied to a network side device. As shown in fig. 3, the method 300 includes:

s302: and the network side equipment receives the CSI report through the PUSCH of the MSG-A in the random access process.

Optionally, as an embodiment, the method further includes sending configuration information, where the configuration information is used to configure the terminal to send the CSI report through a PUSCH of the MSG-a in a random access procedure.

Optionally, as an embodiment, the measurement resource corresponding to the CSI report includes one of:

CSI-RS satisfying QCL relation with SSB selected by a terminal, the SSB being associated with the MSG-A;

and the CSI-RS indicated by the network side equipment.

Optionally, as an embodiment, the method further includes: indicating the CSI-RS by at least one of: system information, control channels, paging control channels, signaling in PDSCH scheduled by the paging control channels, RRC signaling, MAC-CE commands.

Optionally, as an embodiment, the PUSCH corresponds to the first indication information, and the method further includes: determining that the PUSCH includes the CSI report according to the first indication information.

Optionally, as an embodiment, the first indication information is indicated by a preset bit in the PUSCH; or the first indication information is a preset logical channel identifier.

Optionally, as an embodiment, the first indication information is a preset random access preamble.

Optionally, as an embodiment, the method further includes: sending second indication information, wherein the second indication information is used for indicating the code rate of the CSI report; the CSI report and a first message are transmitted by adopting an independent coding mode, and the first message is a message except the CSI report in the PUSCH.

Optionally, as an embodiment, the method further includes: receiving the CSI report in MSG3, the CSI report received in MSG3 being sent by the terminal if at least one of the following conditions is satisfied:

the CSI report is sent over the PUSCH of the MSG-A;

a physical downlink control channel PDCCH scrambled by the MSG-B-radio network temporary identifier RNTI is not detected;

detecting a PDCCH scrambled by a random access radio network temporary identifier RA-RNTI, wherein the RA-RNTI corresponds to a preamble and/or time-frequency resource of an RO sent in the random access process;

detecting a PDCCH scrambled by RA-RNTI, wherein system frame number information contained in the PDCCH corresponds to a system frame number where a preamble sent in the random access process is located;

a CSI request field in a Random Access Response (RAR) indicates the terminal to carry out CSI reporting, wherein the RAR is scheduled by a PDCCH scrambled by an RA-RNTI;

and the network side equipment indicates the terminal to carry out CSI reporting in a high-level signaling.

Fig. 4 is a schematic structural diagram of a terminal according to an embodiment of the present application, and as shown in fig. 4, the terminal 400 includes: a sending module 402, configured to send the CSI report on the PUSCH of the MSG-a in the random access procedure.

In the embodiment of the application, the terminal can send the CSI report through the PUSCH of the MSG-A in the random access process, so that the terminal can perform CSI measurement and report, and therefore, the network side equipment can acquire the channel state information as early as possible, and the terminal is scheduled by using more accurate parameters, and the communication efficiency is improved.

Optionally, as an embodiment, the sending module 402 may be configured to:

according to the configuration of network side equipment, sending a CSI report through a PUSCH of MSG-A in a random access process;

sending a CSI report through a PUSCH of the MSG-A in a random access process under the condition that a preset condition is met; wherein the preset condition comprises at least one of the following conditions: the measured reference signal received power RSRP, reference signal received quality RSRQ, or path loss (path loss) satisfies a first condition; the transport block size, TBS, or code rate of the actual transmission of PUSCH of MSG-a satisfies a second condition.

a channel state information reference signal, CSI-RS, satisfying a quasi co-located QCL relationship with a synchronization and broadcast block, SSB, selected by the terminal, the SSB being associated with the MSG-A;

and the CSI-RS indicated by the network side equipment.

Optionally, as an embodiment, the network side device indicates the CSI-RS by at least one of: system information, control channels, paging control channels, signaling in a Physical Downlink Shared Channel (PDSCH) scheduled by the paging control channels, Radio Resource Control (RRC) signaling, and media access control (MAC-CE) commands.

Alternatively, the processor may, as an embodiment,

the CSI report is based on rank indication RI-1; or

The CSI report is a wideband-based CSI report.

Optionally, as an embodiment, the CSI report includes at least one of: channel quality indication CQI, precoding matrix indication PMI, RI, layer-to-layer reference signal received power L1-RSRP, CSI reference signal resource indicator.

Alternatively, the processor may, as an embodiment,

the CSI report is obtained by the terminal by using SSB or CSI-RS as interference measurement resources; or

The CSI report is obtained by measuring the terminal by using an SSB which meets the QCL relation with the CSI-RS as an interference measurement resource; or

And the CSI report is obtained by measuring the CSI-RS which meets the QCL relation with the SSB by using the terminal as an interference measurement resource.

Optionally, as an embodiment, the PUSCH corresponds to first indication information, where the first indication information is used to indicate that the PUSCH includes the CSI report.

Optionally, as an embodiment, a preamble of the MSG-a in the random access procedure is specific, where the preamble is related to the SSB or the CSI-RS.

Optionally, as an embodiment, the CSI report and the first message are transmitted by using independent coding, and the first message is a message other than the CSI report in the PUSCH.

Optionally, as an embodiment, the terminal 400 further includes a receiving module, which may be configured to: receiving second indication information, wherein the second indication information is used for indicating a code rate of the CSI report.

Optionally, as an embodiment, in a case that the network side device does not configure the second indication information for the terminal, or the second indication information is a first specific value, the terminal does not send the CSI report through the PUSCH.

Optionally, as an embodiment, the sending module 402 may be configured to send the CSI report in the MSG3, where at least one of the following conditions is satisfied:

the CSI report is sent over the PUSCH of the MSG-A;

Optionally, as an embodiment, the CSI report sent in the MSG3 and the CSI report sent in the PUSCH of the MSG-a use the same transmission parameters, and the transmission parameters include at least one of:

whether the CSI report is an independent coded transmission;

the CSI reports parameters of a code rate of transmission.

Optionally, as an embodiment, before sending the CSI report through the PUSCH of the MSG-a in the random access procedure, the terminal is in an idle state or an inactive state.

The terminal 400 according to the embodiment of the present application may refer to the flow corresponding to the method 200 of the embodiment of the present application, and each unit/module and the other operations and/or functions in the terminal 400 are respectively for implementing the corresponding flow in the method 200 and achieving the same or equivalent technical effects, and for brevity, no further description is provided herein.

The terminal in the embodiments of the present application may also be a component, an integrated circuit, or a chip in the terminal. The terminal may be a mobile terminal or a non-mobile terminal. By way of example, the mobile terminal may include, but is not limited to, the above-listed type of terminal 11, and the non-mobile terminal may be a server, a Network Attached Storage (NAS), a Personal Computer (PC), a Television (TV), a teller machine, a kiosk, or the like, and the embodiments of the present application are not limited in particular.

The terminal in the embodiment of the present application may be a device having an operating system. The operating system may be an Android (Android) operating system, an ios operating system, or other possible operating systems, and embodiments of the present application are not limited specifically.

The terminal provided in the embodiment of the present application can implement each process implemented by the method embodiment of fig. 2, and achieve the same technical effect, and for avoiding repetition, details are not repeated here.

Fig. 5 is a schematic structural diagram of a network-side device according to an embodiment of the present application, and as shown in fig. 5, the network-side device 500 includes:

the receiving module 502 may be configured to receive the CSI report through a PUSCH of the MSG-a in a random access procedure.

Optionally, as an embodiment, the network side device 500 further includes a sending module, and is configured to send configuration information, where the configuration information is used to configure the terminal to send the CSI report through the PUSCH of the MSG-a in the random access procedure.

and the CSI-RS indicated by the network side equipment.

Optionally, as an embodiment, the network side device 500 further includes a sending module, which may be configured to: indicating the CSI-RS by at least one of: system information, control channels, paging control channels, signaling in PDSCH scheduled by the paging control channels, RRC signaling, MAC-CE commands.

Optionally, as an embodiment, the PUSCH corresponds to the first indication information, and the receiving module 502 may be further configured to: determining that the PUSCH includes the CSI report according to the first indication information.

Optionally, as an embodiment, the network side device 500 further includes a sending module, which may be configured to: sending second indication information, wherein the second indication information is used for indicating the code rate of the CSI report; the CSI report and a first message are transmitted by adopting an independent coding mode, and the first message is a message except the CSI report in the PUSCH.

Optionally, as an embodiment, the receiving module 502 may be further configured to: receiving the CSI report in MSG3, the CSI report received in MSG3 being sent by the terminal if at least one of the following conditions is satisfied:

the CSI report is sent over the PUSCH of the MSG-A;

The network side device 500 according to the embodiment of the present application may refer to the flow corresponding to the method 300 of the embodiment of the present application, and each unit/module and the other operations and/or functions in the network side device 500 are respectively for implementing the corresponding flow in the method 300, and can achieve the same or equivalent technical effects, and for brevity, no repeated description is provided herein.

Optionally, as shown in fig. 6, an embodiment of the present application further provides a communication device 600, which includes a processor 601, a memory 602, and a program or an instruction stored in the memory 602 and executable on the processor 601, for example, when the communication device 600 is a terminal, the program or the instruction is executed by the processor 601 to implement each process of the above CSI reporting method embodiment, and can achieve the same technical effect. When the communication device 600 is a network-side device, the program or the instruction is executed by the processor 601 to implement each process of the above CSI reporting method embodiment, and the same technical effect can be achieved.

Fig. 7 is a schematic diagram of a hardware structure of a terminal for implementing the embodiment of the present application.

The terminal 700 includes, but is not limited to: a radio frequency unit 701, a network module 702, an audio output unit 703, an input unit 704, a sensor 705, a display unit 706, a user input unit 707, an interface unit 708, a memory 709, and a processor 710.

Those skilled in the art will appreciate that the terminal 700 may further include a power supply (e.g., a battery) for supplying power to various components, which may be logically connected to the processor 710 via a power management system, so as to manage charging, discharging, and power consumption management functions via the power management system. The terminal structure shown in fig. 7 does not constitute a limitation of the terminal, and the terminal may include more or less components than those shown, or combine some components, or have a different arrangement of components, and will not be described again here.

It should be understood that in the embodiment of the present application, the input Unit 704 may include a Graphics Processing Unit (GPU) 7041 and a microphone 7042, and the Graphics Processing Unit 7041 processes image data of still pictures or videos obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 706 may include a display panel 7061, and the display panel 7061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 707 includes a touch panel 7071 and other input devices 7072. The touch panel 7071 is also referred to as a touch screen. The touch panel 7071 may include two parts of a touch detection device and a touch controller. Other input devices 7072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.

In the embodiment of the present application, the radio frequency unit 701 receives downlink data from a network side device and then processes the downlink data in the processor 710; in addition, the uplink data is sent to the network side equipment. In general, radio frequency unit 701 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 709 may be used to store software programs or instructions as well as various data. The memory 709 may mainly include a storage program or instruction area and a storage data area, wherein the storage program or instruction area may store an operating system, an application program or instruction (such as a sound playing function, an image playing function, etc.) required by at least one function, and the like. In addition, the Memory 709 may include a high-speed random access Memory and a nonvolatile Memory, where the nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.

Processor 710 may include one or more processing units; alternatively, processor 710 may integrate an application processor that handles primarily the operating system, user interface, and application programs or instructions, etc. and a modem processor that handles primarily wireless communications, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into processor 710.

The radio frequency unit 701 is configured to send a CSI report through a PUSCH of an MSG-a in a random access procedure.

In the embodiment of the application, the terminal can perform CSI measurement and report, so that the network side equipment can acquire the channel state information as early as possible, schedule the terminal by using more accurate parameters, and improve the communication efficiency.

The terminal provided in the embodiment of the present application may further implement each process of the above CSI reporting method embodiment, and may achieve the same technical effect, and for avoiding repetition, details are not repeated here.

Specifically, the embodiment of the application further provides a network side device. As shown in fig. 8, the network device 800 includes: antenna 81, radio frequency device 82, baseband device 83. The antenna 81 is connected to a radio frequency device 82. In the uplink direction, the rf device 82 receives information via the antenna 81 and sends the received information to the baseband device 83 for processing. In the downlink direction, the baseband device 83 processes information to be transmitted and transmits the information to the rf device 82, and the rf device 82 processes the received information and transmits the processed information through the antenna 81.

The above band processing means may be located in the baseband device 83, and the method performed by the network side device in the above embodiment may be implemented in the baseband device 83, where the baseband device 83 includes a processor 84 and a memory 85.

The baseband device 83 may include, for example, at least one baseband board, on which a plurality of chips are disposed, as shown in fig. 8, wherein one chip, for example, the processor 84, is connected to the memory 85 to call up the program in the memory 85 to perform the network device operation shown in the above method embodiment.

The baseband device 83 may further include a network interface 86 for exchanging information with the radio frequency device 82, such as a Common Public Radio Interface (CPRI).

Specifically, the network side device of the embodiment of the present invention further includes: the instructions or programs stored in the memory 85 and executable on the processor 84, and the processor 84 calls the instructions or programs in the memory 85 to execute the methods executed by the modules shown in fig. 5, and achieve the same technical effects, which are not described herein for avoiding repetition.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the above CSI reporting method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

The processor may be the processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and so on.

The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction to implement each process of the CSI reporting method embodiment, and can achieve the same technical effect, and the details are not repeated here to avoid repetition.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip or a system-on-chip, etc.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A method for reporting CSI (channel State information), which is characterized by comprising the following steps:

and the terminal sends the CSI report through a Physical Uplink Shared Channel (PUSCH) of the MSG-A in the random access process.

2. The method of claim 1, wherein the terminal sending the CSI report via PUSCH of MSG-A in a random access procedure comprises one of:

according to the configuration of network side equipment, the terminal sends a CSI report through a PUSCH of MSG-A in the random access process;

under the condition that a preset condition is met, the terminal sends a CSI report through a PUSCH of the MSG-A in the random access process; wherein the preset condition comprises at least one of the following conditions: the measured reference signal received power RSRP, the measured reference signal received quality RSRQ or the measured path loss meet a first condition; the transport block size, TBS, or code rate of the actual transmission of PUSCH of MSG-a satisfies a second condition.

3. The method of claim 1, wherein the measurement resources corresponding to the CSI report comprise one of:

and the CSI-RS indicated by the network side equipment.

4. The method of claim 3, wherein the network side device indicates the CSI-RS by at least one of: system information, control channels, paging control channels, signaling in a Physical Downlink Shared Channel (PDSCH) scheduled by the paging control channels, Radio Resource Control (RRC) signaling, and media access control (MAC-CE) commands.

5. The method of claim 1,

the CSI report is based on rank indication RI-1; or

The CSI report is a wideband-based CSI report.

6. The method of claim 1, wherein the CSI report comprises at least one of: channel quality indication CQI, precoding matrix indication PMI, RI, layer-to-layer reference signal received power L1-RSRP, CSI reference signal resource indicator.

7. The method of claim 1,

8. The method of claim 1, wherein the PUSCH corresponds to first indication information indicating that the PUSCH comprises the CSI report.

9. The method of claim 8,

the first indication information is indicated by a preset bit in the PUSCH; or

The first indication information is a preset logical channel identifier.

10. The method of claim 8,

the first indication information is a preset random access preamble.

11. The method according to claim 1, characterized in that the preamble of MSG-A in the random access procedure is specific, wherein,

the preamble is associated with an SSB or a CSI-RS.

12. The method of claim 1, wherein the CSI report and a first message are transmitted with independent coding, and wherein the first message is a message other than the CSI report in the PUSCH.

13. The method of claim 12, further comprising:

receiving second indication information, wherein the second indication information is used for indicating a code rate of the CSI report.

14. The method according to claim 13, wherein the terminal does not send the CSI report on the PUSCH in case that a network side device does not configure the terminal with the second indication information or the second indication information is a first specific value.

15. The method of claim 1, further comprising: transmitting the CSI report in MSG3 if at least one of the following is satisfied:

the CSI report is sent over the PUSCH of the MSG-A;

16. The method of claim 15, wherein the CSI report sent in the MSG3 and the CSI report sent in the PUSCH of the MSG-a use the same transmission parameters, and wherein the transmission parameters comprise at least one of:

whether the CSI report is an independent coded transmission;

the CSI reports parameters of a code rate of transmission.

17. The method of claim 1, wherein the terminal is in an idle state or an inactive state before sending a CSI report on PUSCH of MSG-A in a random access procedure.

18. A CSI reporting method, characterized in that the method comprises:

and the network side equipment receives the CSI report through the PUSCH of the MSG-A in the random access process.

19. The method of claim 18, further comprising transmitting configuration information for configuring a terminal to transmit a CSI report on a PUSCH of MSG-a in a random access procedure.

20. The method of claim 18, wherein the measurement resources corresponding to the CSI report comprise one of:

and the CSI-RS indicated by the network side equipment.

21. The method of claim 20, further comprising:

indicating the CSI-RS by at least one of: system information, control channels, paging control channels, signaling in PDSCH scheduled by the paging control channels, RRC signaling, MAC-CE commands.

22. The method of claim 18, wherein the PUSCH corresponds to a first indication information, the method further comprising:

determining that the PUSCH includes the CSI report according to the first indication information.

23. The method of claim 22,

the first indication information is indicated by a preset bit in the PUSCH; or

The first indication information is a preset logical channel identifier.

24. The method of claim 22,

the first indication information is a preset random access preamble.

25. The method of claim 18, further comprising:

sending second indication information, wherein the second indication information is used for indicating the code rate of the CSI report;

the CSI report and a first message are transmitted by adopting an independent coding mode, and the first message is a message except the CSI report in the PUSCH.

26. The method of claim 18, further comprising: receiving the CSI report in MSG3, the CSI report received in MSG3 being sent by the terminal if at least one of the following conditions is satisfied:

the CSI report is sent over the PUSCH of the MSG-A;

27. A terminal, comprising:

and the sending module is used for sending the CSI report through the PUSCH of the MSG-A in the random access process.

28. The terminal of claim 27, wherein the sending module is further configured to: transmitting the CSI report in MSG3 if at least one of the following is satisfied:

the CSI report is sent over the PUSCH of the MSG-A;

29. A network-side device, comprising:

and the receiving module is used for receiving the CSI report through the PUSCH of the MSG-A in the random access process.

30. The network-side device of claim 29, wherein the receiving module is further configured to: receiving the CSI report in MSG3, the CSI report received in MSG3 being sent by the terminal if at least one of the following conditions is satisfied:

the CSI report is sent over the PUSCH of the MSG-A;

31. A terminal comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the CSI reporting method according to any one of claims 1 to 17.

32. A network-side device, comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the CSI reporting method according to any one of claims 18 to 26.

33. A readable storage medium, on which a program or instructions are stored, which, when executed by the processor, implement the CSI reporting method according to any one of claims 1 to 17, or implement the CSI reporting method according to any one of claims 18 to 26.