CN115278652A - Interference cancellation receiver capability reporting method, terminal, base station and medium - Google Patents

Interference cancellation receiver capability reporting method, terminal, base station and medium Download PDF

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Publication number
CN115278652A
CN115278652A CN202110478416.4A CN202110478416A CN115278652A CN 115278652 A CN115278652 A CN 115278652A CN 202110478416 A CN202110478416 A CN 202110478416A CN 115278652 A CN115278652 A CN 115278652A
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China
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terminal
mmse
irc
capability
base station
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吴径舟
杨姗
佘小明
陈鹏
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China Telecom Corp Ltd
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China Telecom Corp Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
    • H04W8/24—Transfer of terminal data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0023—Interference mitigation or co-ordination
    • H04J11/0026—Interference mitigation or co-ordination of multi-user interference
    • H04J11/0036—Interference mitigation or co-ordination of multi-user interference at the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0023—Interference mitigation or co-ordination
    • H04J11/005—Interference mitigation or co-ordination of intercell interference

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  • Engineering & Computer Science (AREA)
  • Databases & Information Systems (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The disclosure provides an interference cancellation receiver capability reporting method, an NR terminal, an NR base station and a storage medium, wherein the method comprises the following steps: after an NR terminal is accessed to an NR service cell, if the NR terminal supports the related capability of an MMSE-IRC receiver, the NR terminal sends MMSE-IRC receiving capability information to an NR base station corresponding to the NR service cell; wherein the MMSE-IRC reception capability information is used to indicate the correlation capability of the MMSE-IRC receiver of the NR terminal. The method defines the capacity of the NR terminal related to the MMSE-IRC receiver and provides a reporting mechanism, so that a network side can acquire the different receiver capacities of the NR terminals served by a cell and the interference suppression capacities of the NR terminals, and can perform user scheduling, data format indication and resource allocation aiming at the differences of the different NR terminals, optimize the network performance and improve the total downlink throughput and the service quality of the network.

Description

Interference cancellation receiver capability reporting method, terminal, base station and medium
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method for reporting an interference cancellation receiver capability, an NR terminal, an NR base station, and a storage medium.
Background
In a cellular mobile wireless communication system, a User may experience a lot of interference when receiving downlink data, including neighboring cell interference experienced by users located in a non-central area of a cell, inter-User interference under MU-MIMO (Multi-User Multi-Input Multi-Output), and the like. MMSE-IRC (Minimum Mean Square Error-IRC, minimum Mean Square Error-interference rejection combining) is a measurement-based interference cancellation receiver technique, and its principle is that an NR terminal measures a target reference signal, estimates an interference value, and combines interference and white noise in an equalization algorithm to perform MMSE-based equalization processing. The MMSE-IRC algorithm has a relatively obvious elimination effect on the interference, and the realization of the receiving technology at the NR terminal side is beneficial to improving the downlink transmission performance. Currently, in the existing standards, the NR terminal capability and reporting mechanism related to MMSE-IRC receiver are not defined.
Disclosure of Invention
In view of the above, an object of the present invention is to provide an interference cancellation receiver capability reporting method, an NR terminal, an NR base station, and a storage medium.
According to a first aspect of the present disclosure, a method for reporting an interference cancellation receiver capability is provided, including: after an NR (radio frequency) terminal is accessed into an NR serving cell, if the NR terminal supports the correlation capability of a minimum mean square error-interference rejection combining MMSE-IRC receiver, the NR terminal sends MMSE-IRC receiving capability information to an NR base station corresponding to the NRNR serving cell through RRC (radio resource control) signaling; wherein the MMSE-IRC receiving capability information is used for indicating the correlation capability of an MMSE-IRC receiver of the NR terminal.
Optionally, the MMSE-IRC reception capability information includes one or more of: whether the NR terminal supports receiving a Physical Downlink Shared Channel (PDSCH) through an MMSE-IRC receiver; scene information supported by an MMSE-IRC receiver of the NR terminal; the target downlink reference signal used by the MMSE-IRC receiver of the NR terminal for measuring the interference value of the NR terminal; whether an MMSE-IRC receiver of the NR terminal supports interference value measurement on time-frequency resources which are not the target downlink reference signal or not; whether an MMSE-IRC receiver of the NR terminal supports interference value measurement on more than 1 Physical Resource Block (PRB) in a time domain/frequency domain jointly or not; a time delay between the interference value measurement and the MMSE-IRC reception of the MMSE-IRC receiver of the NR terminal is carried out; whether the NR terminal supports computing and reporting channel quality information CSI based on an MMSE-IRC mode or not; whether the NR terminal supports MMSE-IRC reception based on network assistance information; whether the NR terminal supports MMSE-IRC reception under mini-slot scheduling.
Optionally, the context information includes one or more of: suppressing inter-cell interference and suppressing inter-user interference in the cell; the target downlink reference signal includes one or more of the following items scheduled by the NR base station for the NR terminal: a DMRS (downlink demodulation reference signal), a CSI-RS (channel state information-reference signal) measured by channel quality information and a cell broadcast signal SSB (cell broadcast signal); the network assistance information includes one or more of the following information of an interference source corresponding to the NR terminal: bandwidth, time slot number, OFDM symbol number, modulation order, code rate and MCS index.
Optionally, after the NR terminal accesses the NR serving cell, receiving a terminal capability query RRC message sent by the NR base station; and after receiving the terminal capability query RRC message, the NR terminal sends the MMSE-IRC receiving capability information to the NR base station.
Optionally, the NR base station sends the terminal capability query RRC message to the NR terminal through a ue capability inquiry message; and the NR terminal sends the MMSE-IRC receiving capability information to the NR base station through a UECapabilityinformation message.
Optionally, the sending, by the NR terminal, the MMSE-IRC reception capability information to the NR base station through a UECapabilityInformation message includes: the NR terminal generates an MMSE-IRC capability indication based on the MMSE-IRC receiving capability information; and the NR terminal adds the MMSE-IRC capability indication in a UECapability information message and optionally sends the MMSE-IRC capability indication to the NR base station, receives scheduling and resource allocation information sent by the NR base station after sending the MMSE-IRC receiving capability information, and performs corresponding processing based on the scheduling and resource allocation information.
Optionally, the reporting granularity of the MMSE-IRC reception capability information is at least one granularity of a frequency band and an NR terminal.
According to a second aspect of the present disclosure, a method for reporting an interference cancellation receiver capability is provided, including: after an NR terminal accesses an NR service cell corresponding to an NR base station, the NR base station receives minimum mean square error-interference rejection combination MMSE-IRC receiving capability information sent by the NR terminal through RRC signaling; wherein the NR terminal supports a correlation capability of an MMSE-IRC receiver, and the MMSE-IRC reception capability information is used to indicate the correlation capability of the MMSE-IRC receiver of the NR terminal.
Optionally, the MMSE-IRC reception capability information includes one or more of: whether the NR terminal supports reception of a physical downlink shared channel PDSCH through an MMSE-IRC receiver; scene information supported by an MMSE-IRC receiver of the NR terminal; the target downlink reference signal used by the MMSE-IRC receiver of the NR terminal for measuring the interference value of the NR terminal; whether an MMSE-IRC receiver of the NR terminal supports interference value measurement on time-frequency resources other than the target downlink reference signal or not; whether an MMSE-IRC receiver of the NR terminal supports interference value measurement on more than 1 Physical Resource Block (PRB) in a time domain/frequency domain jointly; the time delay between the interference value measurement and the MMSE-IRC receiving of the MMSE-IRC receiver of the NR terminal is carried out; whether the NR terminal supports computing and reporting channel quality information CSI based on an MMSE-IRC mode or not; whether the NR terminal supports MMSE-IRC reception based on network assistance information; whether the NR terminal supports MMSE-IRC reception under mini-slot scheduling.
Optionally, the context information includes one or more of: suppressing inter-cell interference and suppressing inter-user interference in the cell; the target downlink reference signal includes one or more of the following items scheduled by the NR base station for the NR terminal: a downlink demodulation reference signal DMRS, a reference signal CSI-RS measured by channel quality information and a cell broadcast signal SSB; the network assistance information includes one or more of the following information of an interference source corresponding to the NR terminal: bandwidth, time slot number, OFDM symbol number, modulation order, code rate and MCS index.
Optionally, after the NR terminal accesses the serving cell, the NR base station sends a terminal capability query RRC message to the NR terminal; and after receiving the terminal capability query RRC message, the NR terminal sends the MMSE-IRC receiving capability information to the NR base station.
Optionally, the NR base station sends the terminal capability query RRC message to the NR terminal through a ue capability inquiry message; and the NR terminal sends the MMSE-IRC receiving capability information to the NR base station through a UECapabilityinformation message.
Optionally, after receiving the MMSE-IRC reception capability information sent by the NR terminal, the NR base station sends scheduling and resource allocation information to the NR terminal, so that the NR terminal performs corresponding processing based on the scheduling and resource allocation information.
According to a third aspect of the present disclosure, there is provided an NR terminal comprising: a capability information reporting module, configured to, after an NR terminal accesses an NR serving cell, send MMSE-IRC reception capability information to an NR base station corresponding to the NR serving cell through an RRC signaling if the NR terminal supports a correlation capability of a minimum mean square error-interference rejection combining MMSE-IRC receiver; wherein the MMSE-IRC reception capability information is used to indicate a correlation capability of an MMSE-IRC receiver of the NR terminal.
Optionally, the query message receiving module is configured to receive a terminal capability query RRC message sent by the NR base station after the NR terminal accesses the NR serving cell; and the capability information reporting module is used for sending the MMSE-IRC receiving capability information to the NR base station after receiving the terminal capability query RRC message.
Optionally, the NR base station sends the terminal capability query RRC message to the NR terminal through a uecapabilitynquiry message; and the capability information reporting module is used for sending the MMSE-IRC receiving capability information to the NR base station through a UECapabilityinformation message.
Optionally, the capability information reporting module is specifically configured to generate an MMSE-IRC capability indication based on the MMSE-IRC reception capability information, add the MMSE-IRC capability indication to a ue capability information message, and send the MMSE-IRC capability indication to the NR base station.
Optionally, the information processing module is configured to receive scheduling and resource allocation information sent by the NR base station after sending the MMSE-IRC reception capability information, so as to perform corresponding processing based on the scheduling and resource allocation information.
According to a fourth aspect of the present disclosure, there is provided an NR terminal comprising: a memory; and a processor coupled to the memory, the processor configured to perform the method as described above based on instructions stored in the memory.
According to a fifth aspect of the present disclosure, there is provided an NR base station comprising: a capability information receiving module, configured to receive minimum mean square error-interference rejection combining MMSE-IRC reception capability information sent by an NR terminal through an RRC signaling after the NR terminal accesses an NR serving cell corresponding to an NR base station; wherein the NR terminal supports a correlation capability of an MMSE-IRC receiver, and the MMSE-IRC reception capability information is used to indicate the correlation capability of the MMSE-IRC receiver of the NR terminal.
Optionally, the query message sending module is configured to send a terminal capability query RRC message to the NR terminal after the NR terminal accesses the serving cell; wherein the NR terminal transmits the MMSE-IRC reception capability information to the NR base station after receiving the terminal capability query RRC message.
Optionally, the query message sending module is configured to send the terminal capability query RRC message to the NR terminal through a ue capability inquiry message; and the NR terminal sends the MMSE-IRC receiving capability information to the NR base station through a UECapabilityinformation message.
Optionally, the information sending module is configured to send scheduling and resource allocation information to the NR terminal after receiving the MMSE-IRC reception capability information sent by the NR terminal, so that the NR terminal performs corresponding processing based on the scheduling and resource allocation information.
According to a sixth aspect of the present disclosure, there is provided an NR base station comprising: a memory; and a processor coupled to the memory, the processor configured to perform the method as described above based on instructions stored in the memory.
According to a seventh aspect of the present disclosure, there is provided a computer readable storage medium storing computer instructions for execution by a processor to perform the method as described above.
According to the capacity reporting method of the interference elimination receiver, the NR terminal, the NR base station and the storage medium, after the NR terminal is accessed to an NR service cell, the NR terminal sends MMSE-IRC receiving capacity information to the NR base station corresponding to the NR service cell, and the MMSE-IRC receiving capacity information is used for indicating the relevant capacity of the MMSE-IRC receiver of the NR terminal; the method defines the capacity of the NR terminal related to the MMSE-IRC receiver and provides a reporting mechanism, and the network side can acquire the different receiver capacities of the NR terminal served by the cell and the interference suppression capacities of the NR terminal through MMSE-IRC receiving capacity information reporting, so that the user scheduling, data format indication, resource allocation and network performance optimization can be performed according to the difference of different NR terminals, and the total downlink throughput and the service quality of the network are improved.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without inventive exercise.
Fig. 1 is a flowchart illustrating an embodiment of a method for reporting an interference cancellation receiver capability according to the present disclosure;
fig. 2 is a flowchart illustrating an interference cancellation receiver capability reporting method according to another embodiment of the disclosure;
fig. 3 is a flowchart illustrating a method for reporting the capability of an interference cancellation receiver according to another embodiment of the disclosure;
fig. 4 is a flowchart illustrating a method for reporting interference cancellation receiver capability according to still another embodiment of the disclosure
Fig. 5 is a block diagram of an embodiment of an NR terminal according to the present disclosure;
fig. 6 is a block schematic diagram of another embodiment of an NR terminal according to the present disclosure;
fig. 7 is a block diagram of one embodiment of an NR base station in accordance with the present disclosure;
fig. 8 is a block diagram of another embodiment of an NR base station according to the present disclosure.
Detailed Description
The present disclosure now will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the disclosure are shown. The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
Currently, in the related standard of the fifth generation New wireless access system (5Generation New rat,5g NR), no NR terminal capability and reporting mechanism related to MMSE-IRC receiver is defined. In a 4G LTE (Long Term Evolution) system, correlation capability of an NR terminal MMSE-IRC receiver is defined, but the correlation capability only relates to whether the MMSE-IRC receiver is used for PDSCH reception and the number of supportable reception antennas, and the correlation capability is not reported to an NR base station.
Fig. 1 is a flowchart illustrating an embodiment of a method for reporting an interference cancellation receiver capability according to the present disclosure, as shown in fig. 1:
in step 101, an NR terminal accesses an NR serving cell.
In one embodiment, the new air interface NR terminal includes a mobile phone, a tablet computer, and the like, and the new air interface NR base station includes a 5GNR base station, and the like. The NR terminal may access an NR serving cell corresponding to an NR base station using various existing access methods.
Step 102, if the NR terminal supports the correlation capability of the minimum mean square error-interference rejection combining MMSE-IRC receiver, the NR terminal transmits MMSE-IRC reception capability information to the NR base station corresponding to the NR serving cell through RRC signaling (message); wherein the MMSE-IRC receiving capability information is used for indicating the correlation capability of an MMSE-IRC receiver of the NR terminal; the NR terminal may be configured to an MMSE-IRC reception capability information transmission mode.
The NR terminal reports the MMSE-IRC receiving capability information only when supporting the relevant capability of the MMSE-IRC receiver; and if the NR terminal does not support the correlation capability of the MMSE-IRC receiver, the MMSE-IRC receiving capability information is not reported.
And the NR terminal receives scheduling and resource allocation information sent by the NR base station after sending MMSE-IRC receiving capability information, and performs corresponding processing based on the scheduling and resource allocation information. The MMSE-IRC reception capability information may be configured in various ways, for example, the MMSE-IRC reception capability information is a factory parameter configured when the NR terminal is shipped.
In one embodiment, the MMSE-IRC reception capability information includes one or more of the following information:
whether the MMSE-IRC receiver of the NR terminal supports reception of signals over the physical downlink shared channel PDSCH, i.e., whether the NR terminal supports MMSE-IRC based PDSCH reception;
scenario information supported by the MMSE-IRC receiver of the NR terminal, that is, whether the NR terminal supports MMSE-IRC reception applied to different scenarios, includes suppressing inter-cell interference, suppressing inter-user interference of the local cell, and the like;
an objective downlink reference signal used by the MMSE-IRC receiver of the NR terminal to perform the interference value measurement of the NR terminal, that is, the objective downlink reference signal used by the NR terminal to perform the interference value measurement performed by the MMSE-IRC receiver; the target downlink Reference Signal includes a downlink Demodulation Reference Signal (DMRS) scheduled by the NR base station for the NR terminal, a Reference Signal for Channel State Information measurement (CSI-RS), a broadcast Signal (e.g., SSB (SS block, synchronization Signal block), etc.) normally open in a cell, and the like;
the time delay between the measurement of the interference value of the NR terminal and the MMSE-IRC reception by the MMSE-IRC receiver of the NR terminal, that is, the time delay between the measurement of the interference value of the NR terminal and the MMSE-IRC reception;
whether an MMSE-IRC mode is adopted for calculating and reporting the channel quality information CSI of the NR terminal, namely whether the calculation and reporting of the channel quality information CSI of the NR terminal are based on the MMSE-IRC mode;
whether an MMSE-IRC receiver of the NR terminal supports interference value measurement on time-frequency resources of non-target downlink reference signals or not;
whether the MMSE-IRC receiver of the NR terminal supports interference value measurement on more than 1 physical resource block PRB combination in the time or frequency domain;
whether the NR terminal supports computing and reporting channel quality information (CSI) based on an MMSE-IRC mode or not;
whether the terminal supports MMSE-IRC reception under mini-slot scheduling;
whether the terminal supports MMSE-IRC reception based on network assistance information; the network assistance information includes one or more of the following information of an interference source corresponding to the NR terminal: bandwidth, time slot number, OFDM symbol number, modulation order, code rate, MCS index and the like; the interference source can be other terminals, base stations and the like;
other capability information.
In one embodiment, the reporting granularity of the MMSE-IRC reception capability information is at least one of the granularity of a frequency band and an NR terminal. For example, MMSE-IRC reception capability information reporting supports NR terminal granularity, i.e., MMSE-IRC reception capability information may be based on NR terminals (per UE) that support a capability corresponding to MMSE-IRC reception capability information on all bandwidths and carriers; the MMSE-IRC reception capability information reports the supported band granularity, that is, the MMSE-IRC reception capability information may be based on a band (per band), and the NR terminal supports the capability corresponding to the MMSE-IRC reception capability information only on the band where the MMSE-IRC reception capability information is reported.
The method defines the related capability and reporting mechanism of an MMSE-IRC receiver of an NR terminal, after the NR terminal is accessed into an NR service cell, an NR base station initiates capability query to the NR terminal, and the NR terminal can report MMSE-IRC receiving capability information to the NR base station; by reporting MMSE-IRC receiving capability information to a network side, the network side is facilitated to acquire the MMSE-IRC receiver capability of an NR terminal served by a cell and the interference suppression capability of the NR terminal, and an NR base station is facilitated to more effectively perform downlink resource allocation and interference coordination between the cell and a user after acquiring the capability, thereby optimizing the network performance and improving the service quality of the network.
Fig. 2 is a flowchart illustrating another embodiment of a method for reporting an interference cancellation receiver capability according to the present disclosure, as shown in fig. 2:
step 201, after the NR terminal accesses the NR serving cell, receives a terminal capability query RRC (Radio Resource Control) message sent by the NR base station. For example, the NR base station sends a terminal capability query RRC message to the NR terminal through the ue capability query message, that is, the terminal capability query RRC message may be a ue capability query message or the like.
In step 202, the NR terminal transmits MMSE-IRC reception capability information to the NR base station after receiving the terminal capability query RRC message. For example, the NR terminal transmits MMSE-IRC reception capability information to the NR base station through a UECapabilityInformation message.
The NR terminal may transmit MMSE-IRC reception capability information to the NR base station through the UECapabilityInformation message in various ways. For example, the NR terminal generates an MMSE-IRC capability indication based on MMSE-IRC reception capability information, and the NR terminal adds the MMSE-IRC capability indication in a UECapabilityInformation message and transmits to the NR base station.
In an embodiment, after the NR terminal successfully accesses the cell and is in a connected state, the NR base station initiates a capability query to the UE through a UE capability inquiry message defined in a TS 38 related protocol. And the NR terminal sends MMSE-IRC receiving capability information to the NR base station through a UECapabilityinformation message defined in a TS 38 related protocol.
MMSE-IRC capability indication fields may be defined in the UECapabilityInformation message, and the NR terminal sets values of the respective MMSE-IRC capability indication fields based on MMSE-IRC reception capability information, generating an MMSE-IRC capability indication.
For example, for whether or not an MMSE-IRC receiver of an NR terminal in MMSE-IRC reception capability information supports reception of a signal through a PDSCH, an MMSE-IRC capability indication field is defined as a PDSCH reception support field. The PDSCH reception support field is set to "True" if the MMSE-IRC receiver of the NR terminal supports reception of signals through the PDSCH, and is set to "False" if the MMSE-IRC receiver of the NR terminal does not support reception of signals through the PDSCH.
And after the NR terminal sets the values of all MMSE-IRC capability indication fields based on the MMSE-IRC receiving capability information and generates the MMSE-IRC capability indication, the MMSE-IRC capability indication is added into a UECapability information message and is sent to the NR base station, so that the NR base station is supported to perform more effective resource allocation and user scheduling.
In one embodiment, assume that there are five NR terminals in an NR serving cell that successfully access the NR serving cell, and the interference situation and NR terminal capability are: NR terminal A: the interference of the adjacent cell is continuously received at the edge of the cell, and the MMSE-IRC receiving capability is not provided; and NR terminal B: the interference of the adjacent cell is continuously received at the edge of the cell, and the receiving capability of MMSE-IRC is provided; NR terminal C: the system is positioned in the center of a cell, is less interfered by the adjacent cell and has MMSE-IRC receiving capability; NR terminal D: the method is positioned in the center of the cell, is less interfered by the adjacent cell, has MMSE-IRC receiving capability and higher correlation with a wireless channel of an NR terminal C: NR terminal E: and the interference of the adjacent cell is small, the receiving capability of MMSE-IRC is not provided, and the correlation of the wireless channel with the NR terminal C is high.
After accessing the NR serving cell, the five NR terminals respectively report MMSE-IRC reception capability information to the NR base station, that is, report the reception capability of the MMSE-IRC receiver of the NR terminal to the NR base station. After learning the above capability, the network side may perform scheduling and resource allocation as follows: the NR terminal B is positioned at the edge of the cell, the probability of being interfered by the adjacent cell is high, and the network side allocates less downlink transmission resources for the NR terminal B; although the NR terminal a is located at the edge of the cell, the NR terminal a has interference suppression capability in the neighboring cell, and the network side can allocate downlink transmission resources to the NR terminal a as usual according to the channel quality information reported by the NR terminal a; when the network side performs downlink MU-MIMO transmission, although the correlation between NR terminal C and NR terminal D, E is high and the interference between users is high, the NR terminal C and NR terminal D both report MMSE-IRC capability and can suppress the interference, so the NR base station can also transmit C, D pair.
Fig. 3 is a flowchart illustrating a method for reporting the capability of an interference cancellation receiver according to another embodiment of the present disclosure, as shown in fig. 3:
in step 301, the NR terminal accesses an NR serving cell corresponding to an NR base station.
Step 302, the NR base station receives the minimum mean square error-interference rejection combination MMSE-IRC receiving capability information sent by the NR terminal through RRC signaling; wherein the NR terminal supports a correlation capability of the MMSE-IRC receiver, and the MMSE-IRC reception capability information is used to indicate the correlation capability of the MMSE-IRC receiver of the NR terminal.
And after receiving the MMSE-IRC receiving capability information sent by the NR terminal, the NR base station sends scheduling and resource allocation information to the NR terminal so that the NR terminal performs corresponding processing based on the scheduling and resource allocation information.
Fig. 4 is a flowchart illustrating a method for reporting the capability of an interference cancellation receiver according to another embodiment of the present disclosure, as shown in fig. 4:
step 401, after the NR terminal accesses the serving cell, the NR base station sends a terminal capability query RRC message to the NR terminal.
In step 402, the NR terminal transmits MMSE-IRC reception capability information to the NR base station after receiving the terminal capability query RRC message.
The NR base station sends a terminal capability query RRC message to the NR terminal through a UECapabilityEnquiry message; and the NR terminal sends the MMSE-IRC receiving capability information to the NR base station through a UECapabilityinformation message.
The method for reporting the capacity of the interference elimination receiver disclosed by the invention refines the capacity of supporting MMSE-IRC receiving, comprises the available scene of MMSE-IRC, the interference measurement mode and the like, and the reporting of the series of capacities (MMSE-IRC receiving capacity information) is beneficial to resource allocation of different NR terminals on a network side and optimization of network performance.
In the existing LTE standard, MMSE-IRC related reception capability does not report to an NR base station, and an NR terminal supporting the related capability estimates an interference value by measuring a reference signal, and supports transmission at a higher rate by reporting better Channel Quality Information (CQI), but there are the following disadvantages:
1. in the NR system, the NR terminal obtains and reports channel state information by measuring the CSI-RS, and in actual reception, the NR terminal estimates an interference value by measuring a DMRS, which has higher frequency/time domain density and is real-time information. Therefore, the NR terminal may underestimate the reception quality under the MMSE-IRC reception algorithm only based on CQI reporting, which is not favorable for higher network rate;
2. in an MU-MIMO system, an NR terminal cannot acquire the inter-user interference of potential paired users through a CSI-RS, so that the reported CSI cannot reflect the inhibition capability of an MMSE-IRC receiver under MU-MIMO on the inter-user interference, and therefore, only users with low relevance can be scheduled as far as possible when an NR base station performs user pairing, the interference inhibition capability of the NR terminal cannot be considered, and a part of performance is wasted.
The interference elimination receiver capability reporting method is beneficial to the network side to know different receiver capabilities of NR terminals served by a cell and the respective interference suppression capabilities of the NR terminals, and is beneficial to an NR base station to adopt a better distribution scheme during scheduling and resource distribution, continuously distribute downlink resources to NR terminals which are positioned at the edge of the cell and support MMSE-IRC interference suppression capability, or pair NR terminals which have high downlink channel correlation and support MMSE-IRC interference suppression capability, perform MU-MIMO transmission and the like; and the total downlink throughput and the service quality of the network are improved as a whole.
In one embodiment, as shown in fig. 5, the present disclosure provides an NR terminal 50 including: a capability information reporting module 51, a query message receiving module 52 and an information processing module 53. After the NR terminal accesses the NR serving cell, if the NR terminal supports the correlation capability of the MMSE-IRC receiver, the capability information reporting module 51 sends minimum mean square error-interference rejection combining MMSE-IRC reception capability information to the NR base station corresponding to the NR serving cell through an RRC signaling; wherein the MMSE-IRC reception capability information is used to indicate the correlation capability of the MMSE-IRC receiver of the NR terminal.
The query message receiving module 52 receives a terminal capability query RRC message sent by the NR base station after the NR terminal accesses the NR serving cell. After receiving the RRC message for inquiring the terminal capability, the capability information reporting module 51 sends MMSE-IRC reception capability information to the NR base station. After sending MMSE-IRC reception capability information, the information processing module 53 receives scheduling and resource allocation information sent by the NR base station, and performs corresponding processing based on the scheduling and resource allocation information.
In one embodiment, an NR base station transmits a terminal capability query RRC message to an NR terminal through a ue capability inquiry message; the capability information reporting module 51 sends MMSE-IRC reception capability information to the NR base station through a UECapabilityInformation message. For example, the capability information reporting module 51 generates an MMSE-IRC capability indication based on the MMSE-IRC reception capability information, adds the MMSE-IRC capability indication to the UECapabilityInformation message, and transmits the MMSE-IRC capability indication to the NR base station.
In one embodiment, as shown in fig. 6, the present disclosure provides an NR terminal 60 including: memory 61, processor 62, communication interface 63, and bus 64. The memory 61 is used for storing instructions, the processor 62 is coupled to the memory 61, and the processor 62 is configured to execute the method for reporting the capability of the interference cancellation receiver based on the instructions stored in the memory 61.
The memory 61 may be a high-speed RAM memory, a non-volatile memory (non-volatile memory), or the like, and the memory 61 may be a memory array. The storage 61 may also be partitioned and the blocks may be combined into virtual volumes according to certain rules. The processor 62 may be a central processing unit CPU, or an Application Specific Integrated Circuit ASIC (Application Specific Integrated Circuit), or one or more Integrated circuits configured to implement the interference cancellation receiver capability reporting method of the present disclosure.
In one embodiment, as shown in fig. 7, the present disclosure provides an NR base station 70 including: a capability information receiving module 71, an inquiry message transmitting module 72, and an information transmitting module 73. After the NR terminal accesses an NR serving cell corresponding to the NR base station, the capability information receiving module 71 receives minimum mean square error-interference rejection combining MMSE-IRC reception capability information sent by the NR terminal through an RRC signaling; wherein the NR terminal supports a correlation capability of the MMSE-IRC receiver, and the MMSE-IRC reception capability information is used to indicate the correlation capability of the MMSE-IRC receiver of the NR terminal.
After receiving MMSE-IRC reception capability information sent by the NR terminal, the information sending module 73 sends scheduling and resource allocation information to the NR terminal, so that the NR terminal performs corresponding processing based on the scheduling and resource allocation information.
The query message sending module 72 sends a terminal capability query RRC message to the NR terminal after the NR terminal accesses the serving cell; and the NR terminal sends the MMSE-IRC receiving capability information to the NR base station after receiving the terminal capability query RRC message. The query message sending module 72 sends a terminal capability query RRC message to the NR terminal through a uecapabilitynquiry message; wherein, the NR terminal sends MMSE-IRC receiving capability information to the NR base station through a UECapabilityinformation message.
In one embodiment, as shown in fig. 8, the present disclosure provides an NR base station 80 comprising a memory 81, a processor 82, a communication interface 83, and a bus 84. The memory 81 is used for storing instructions, the processor 82 is coupled to the memory 81, and the processor 82 is configured to execute the method for reporting the capability of the interference cancellation receiver based on the instructions stored in the memory 81.
The memory 81 may be a high-speed RAM memory, a non-volatile memory (non-volatile memory), or the like, and the memory 81 may be a memory array. The storage 81 may also be partitioned and the blocks may be combined into virtual volumes according to certain rules. The processor 82 may be a central processing unit CPU, or an Application Specific Integrated Circuit ASIC (Application Specific Integrated Circuit), or one or more Integrated circuits configured to implement the interference cancellation receiver capability reporting method of the present disclosure.
In one embodiment, the present disclosure provides a computer-readable storage medium storing computer instructions that, when executed by a processor, implement a method as in any one of the embodiments above.
In the method for reporting the capability of the interference cancellation receiver, the NR terminal, the NR base station, and the storage medium in the embodiments, after the NR terminal accesses the NR serving cell, the NR terminal sends MMSE-IRC reception capability information to the NR base station corresponding to the NR serving cell, where the MMSE-IRC reception capability information is used to indicate a relevant capability of an MMSE-IRC receiver of the NR terminal; the method defines the capacity of the NR terminal related to the MMSE-IRC receiver and provides a reporting mechanism, and the network side can acquire the different receiver capacities of the NR terminal served by the cell and the interference suppression capacities of the NR terminal through MMSE-IRC receiving capacity information reporting, so that the resource allocation can be performed according to the difference of different NR terminals, the network performance is optimized, the total downlink throughput and the service quality of the network are improved, and the use sensitivity of a user is improved.
The method and system of the present disclosure may be implemented in a number of ways. For example, the methods and systems of the present disclosure may be implemented by software, hardware, firmware, or any combination of software, hardware, and firmware. The above-described order for the steps of the method is for illustration only, and the steps of the method of the present disclosure are not limited to the order specifically described above unless specifically stated otherwise. Further, in some embodiments, the present disclosure may also be embodied as programs recorded in a recording medium, the programs including machine-readable instructions for implementing the methods according to the present disclosure. Thus, the present disclosure also covers a recording medium storing a program for executing the method according to the present disclosure.
The description of the present disclosure has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the disclosure in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the disclosure and the practical application, and to enable others of ordinary skill in the art to understand the disclosure for various embodiments with various modifications as are suited to the particular use contemplated.

Claims (26)

1. A method for reporting the capability of an interference cancellation receiver comprises the following steps:
after an NR (radio frequency) terminal is accessed into an NR serving cell, if the NR terminal supports the related capability of a minimum mean square error-interference rejection combining MMSE-IRC receiver, the NR terminal sends MMSE-IRC receiving capability information to an NR base station corresponding to the NR serving cell through RRC (radio resource control) signaling; wherein the MMSE-IRC reception capability information is used to indicate a correlation capability of an MMSE-IRC receiver of the NR terminal.
2. The method of claim 1, wherein,
the MMSE-IRC receiving capability information comprises one or more of the following items:
whether the NR terminal supports reception of a physical downlink shared channel PDSCH through an MMSE-IRC receiver;
scene information supported by an MMSE-IRC receiver of the NR terminal;
the target downlink reference signal used by the MMSE-IRC receiver of the NR terminal for measuring the interference value of the NR terminal;
whether an MMSE-IRC receiver of the NR terminal supports interference value measurement on time-frequency resources other than the target downlink reference signal or not;
whether an MMSE-IRC receiver of the NR terminal supports interference value measurement on more than 1 Physical Resource Block (PRB) in a time domain/frequency domain jointly;
the time delay between the interference value measurement and the MMSE-IRC receiving of the MMSE-IRC receiver of the NR terminal is carried out;
whether the NR terminal supports computing and reporting channel quality information CSI based on an MMSE-IRC mode or not;
whether the NR terminal supports MMSE-IRC reception based on network assistance information;
whether the NR terminal supports MMSE-IRC reception under mini-slot scheduling.
3. The method of claim 2, wherein,
the scene information includes one or more of: suppressing inter-cell interference and suppressing inter-user interference in the cell;
the target downlink reference signal includes one or more of the following items scheduled by the NR base station for the NR terminal: a downlink demodulation reference signal DMRS, a reference signal CSI-RS measured by channel quality information and a cell broadcast signal SSB;
the network assistance information includes one or more of the following information of an interference source corresponding to the NR terminal: bandwidth, time slot number, OFDM symbol number, modulation order, code rate and MCS index.
4. The method of claim 1, further comprising:
receiving a terminal capability query RRC message sent by the NR base station after the NR terminal accesses the NR serving cell;
and after receiving the terminal capability query RRC message, the NR terminal sends the MMSE-IRC receiving capability information to the NR base station.
5. The method of claim 4, wherein,
the NR base station sends the terminal capability query RRC message to the NR terminal through a UECapabilityEnquiry message;
and the NR terminal sends the MMSE-IRC receiving capability information to the NR base station through a UECapabilityinformation message.
6. The method of claim 5, the NR terminal transmitting the MMSE-IRC reception capability information to the NR base station through a UECapabilityInformation message comprising:
the NR terminal generates an MMSE-IRC capability indication based on the MMSE-IRC receiving capability information;
and the NR terminal adds the MMSE-IRC capability indication in a UECapabilityinformation message and sends the UECapabilityinformation message to the NR base station.
7. The method of claim 1, further comprising:
and after the NR terminal sends the MMSE-IRC receiving capability information, the NR terminal receives scheduling and resource allocation information sent by the NR base station, and performs corresponding processing based on the scheduling and resource allocation information.
8. The method of claim 1, wherein,
and the reporting granularity of the MMSE-IRC receiving capability information is at least one granularity of a frequency band and an NR terminal.
9. A method for reporting the capability of an interference cancellation receiver comprises the following steps:
after an NR terminal accesses an NR service cell corresponding to an NR base station, the NR base station receives minimum mean square error-interference rejection combination MMSE-IRC receiving capacity information; wherein the NR terminal supports correlation capability of a minimum mean square error-interference rejection combining MMSE-IRC receiver, and the MMSE-IRC reception capability information is used for indicating the correlation capability of the MMSE-IRC receiver of the NR terminal.
10. The method of claim 9, wherein,
the MMSE-IRC receiving capability information comprises one or more of the following items:
whether the NR terminal supports reception of a physical downlink shared channel PDSCH through an MMSE-IRC receiver;
scene information supported by an MMSE-IRC receiver of the NR terminal;
the target downlink reference signal used by the MMSE-IRC receiver of the NR terminal for measuring the interference value of the NR terminal;
whether an MMSE-IRC receiver of the NR terminal supports interference value measurement on time-frequency resources which are not the target downlink reference signal or not;
whether an MMSE-IRC receiver of the NR terminal supports interference value measurement on more than 1 Physical Resource Block (PRB) in a time domain/frequency domain jointly;
the time delay between the interference value measurement and the MMSE-IRC receiving of the MMSE-IRC receiver of the NR terminal is carried out;
whether the NR terminal supports calculation and reporting of channel quality information (CSI) based on an MMSE-IRC mode or not;
whether the NR terminal supports MMSE-IRC reception based on network assistance information;
whether the NR terminal supports MMSE-IRC reception under mini-slot scheduling.
11. The method of claim 10, wherein,
the scene information comprises one or more of the following items: suppressing inter-cell interference and suppressing inter-user interference in the cell;
the target downlink reference signal includes one or more of the following items scheduled by the NR base station for the NR terminal: a downlink demodulation reference signal DMRS, a reference signal CSI-RS measured by channel quality information and a cell broadcast signal SSB;
the network assistance information includes one or more of the following information of an interference source corresponding to the NR terminal: bandwidth, time slot number, OFDM symbol number, modulation order, code rate and MCS index.
12. The method of claim 9, further comprising:
after the NR terminal accesses the serving cell, the NR base station sends a terminal capability query RRC message to the NR terminal;
and after receiving the terminal capability query RRC message, the NR terminal sends the MMSE-IRC receiving capability information to the NR base station.
13. The method of claim 12, wherein,
the NR base station sends the terminal capability query RRC message to the NR terminal through a UECapabilityEnquiry message;
and the NR terminal sends the MMSE-IRC receiving capability information to the NR base station through a UECapabilityinformation message.
14. The method of claim 9, further comprising:
and after receiving the MMSE-IRC receiving capability information sent by the NR terminal, the NR base station sends scheduling and resource allocation information to the NR terminal so that the NR terminal performs corresponding processing based on the scheduling and resource allocation information.
15. An NR terminal comprising:
a capability information reporting module, configured to, after an NR terminal accesses an NR serving cell, send MMSE-IRC reception capability information to an NR base station corresponding to the NR serving cell through an RRC signaling if the NR terminal supports a correlation capability of a minimum mean square error-interference rejection combining MMSE-IRC receiver; wherein the MMSE-IRC receiving capability information is used for indicating the correlation capability of an MMSE-IRC receiver of the NR terminal.
16. The NR terminal of claim 15 further comprising:
a query message receiving module, configured to receive a terminal capability query RRC message sent by the NR base station after the NR terminal accesses the NR serving cell;
and the capability information reporting module is used for sending the MMSE-IRC receiving capability information to the NR base station after receiving the terminal capability query RRC message.
17. The NR terminal of claim 16, wherein the NR base station transmits the terminal capability query RRC message to the NR terminal through a UECapabilityEnquiry message;
and the capability information reporting module is used for sending the MMSE-IRC receiving capability information to the NR base station through a UECapabilityinformation message.
18. The NR terminal of claim 17, wherein,
the capability information reporting module is specifically configured to generate an MMSE-IRC capability indication based on the MMSE-IRC reception capability information, add the MMSE-IRC capability indication to a UECapabilityInformation message, and send the MMSE-IRC capability indication to the NR base station.
19. The NR terminal of claim 15 further comprising:
and an information processing module, configured to receive scheduling and resource allocation information sent by the NR base station after sending the MMSE-IRC reception capability information, so as to perform corresponding processing based on the scheduling and resource allocation information.
20. An NR terminal comprising:
a memory; and a processor coupled to the memory, the processor configured to perform the method of any of claims 1-8 based on instructions stored in the memory.
21. An NR base station comprising:
a capability information receiving module, configured to receive minimum mean square error-interference rejection combining MMSE-IRC reception capability information sent by an NR terminal through an RRC signaling after the NR terminal accesses an NR serving cell corresponding to an NR base station; wherein the NR terminal supports a correlation capability of an MMSE-IRC receiver, and the MMSE-IRC reception capability information is used to indicate the correlation capability of the MMSE-IRC receiver of the NR terminal.
22. The NR base station of claim 21 further comprising:
a query message sending module, configured to send a terminal capability query RRC message to the NR terminal after the NR terminal accesses the serving cell; wherein the NR terminal transmits the MMSE-IRC reception capability information to the NR base station after receiving the terminal capability query RRC message.
23. The NR base station of claim 22,
the query message sending module is configured to send the terminal capability query RRC message to the NR terminal through a ue capability inquiry message; and the NR terminal sends the MMSE-IRC receiving capability information to the NR base station through a UECapabilityinformation message.
24. The NR base station of claim 21 further comprising:
and an information sending module, configured to send scheduling and resource allocation information to the NR terminal after receiving the MMSE-IRC reception capability information sent by the NR terminal, so that the NR terminal performs corresponding processing based on the scheduling and resource allocation information.
25. An NR base station comprising:
a memory; and a processor coupled to the memory, the processor configured to perform the method of any of claims 9-14 based on instructions stored in the memory.
26. A computer-readable storage medium having stored thereon computer instructions for execution by a processor to perform the method of any one of claims 1 to 14.
CN202110478416.4A 2021-04-30 2021-04-30 Interference cancellation receiver capability reporting method, terminal, base station and medium Pending CN115278652A (en)

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