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CN-119893570-B - Information transmission method, base station, terminal and communication system

CN119893570BCN 119893570 BCN119893570 BCN 119893570BCN-119893570-B

Abstract

The disclosure provides an information transmission method, a base station, a terminal and a communication system, and relates to the field of mobile communication. In the disclosure, an NR terminal reports the CRS interference suppression capability information of an LTE neighboring cell of the NR terminal to an NR base station, and the NR base station receives the CRS interference suppression capability information of the LTE neighboring cell reported by the NR terminal, so as to assist the base station to accurately make a decision.

Inventors

  • WU JINGZHOU
  • YANG PAN
  • SHE XIAOMING
  • CHEN PENG

Assignees

  • 中国电信股份有限公司

Dates

Publication Date
20260505
Application Date
20210330

Claims (20)

  1. 1. An information transmission method, comprising: the new air interface NR terminal reports the CRS interference suppression capability information of a long term evolution LTE neighbor cell reference signal of the NR terminal to an NR base station, wherein the CRS interference suppression capability information of the LTE neighbor cell comprises whether the NR terminal supports the CRS information of the LTE neighbor cell which is not required to be issued by a network side, so that the CRS interference suppression of the LTE neighbor cell can be performed; The NR terminal receives indication information related to LTE neighbor cell CRS interference suppression sent by the NR base station through radio resource control RRC signaling, wherein the indication information comprises one or more of enabling control information of LTE neighbor cell CRS interference suppression and/or LTE neighbor cell CRS information, wherein the LTE neighbor cell CRS information comprises one or more of identification information of the LTE neighbor cell, CRS port number, MBSFN subframe configuration information, center carrier and system bandwidth, time slot number information, a used cyclic prefix and a duplexing mode, and when the indication information comprises the LTE neighbor cell CRS information, if the CRS port number or MBSFN subframe configuration information is not sent, the NR terminal applies the CRS port number or MBSFN subframe configuration information in LTE CRS configuration co-station with the current NR cell.
  2. 2. The method as recited in claim 1, further comprising: And the NR terminal performs interference suppression according to the indication information.
  3. 3. The method of claim 2, wherein the NR terminal performs interference suppression according to the indication information, comprising: If the indication information comprises enabling control information of LTE neighbor cell CRS interference suppression, the NR terminal starts or closes LTE neighbor cell CRS interference suppression according to the enabling control information of LTE neighbor cell CRS interference suppression; And if the indication information comprises LTE neighbor cell CRS information, the NR terminal starts LTE neighbor cell CRS interference suppression according to the LTE neighbor cell CRS information and performs interference detection at a position corresponding to the LTE neighbor cell CRS information.
  4. 4. The method of claim 1, wherein the LTE neighbor cell CRS interference suppression capability information further includes one or more of whether the NR terminal supports LTE neighbor cell CRS interference suppression, whether the NR terminal supports LTE neighbor cell CRS interference suppression when the new air interface subcarrier spacing is 30k, and whether the NR terminal supports LTE neighbor cell CRS interference suppression under an asynchronous system.
  5. 5. The method of claim 4, wherein the step of determining the position of the first electrode is performed, The value of whether the NR terminal supports the CRS interference suppression of the LTE neighbor cell indicates whether the NR terminal supports the CRS interference suppression of the LTE neighbor cell, the number of LTE neighbor cells which can be supported by the NR terminal and used for performing the CRS interference suppression of the LTE neighbor cell, or the number of carrier units which can be supported by the NR terminal under the carrier aggregation scene and used for simultaneously performing the CRS interference suppression of the LTE neighbor cell.
  6. 6. The method according to any one of claims 1 to 5, wherein, The enabling control information of the CRS interference suppression of the LTE neighbor cells is received through the LTE-CRS-ToMatchAround signaling or other RRC signaling except the LTE-CRS-ToMatchAround signaling.
  7. 7. The method of any one of claims 1-5, wherein if the duplexing mode is TDD, the LTE neighbor cell CRS information further includes uplink and downlink subframe proportioning information.
  8. 8. The method according to any one of claims 1-5, wherein when the indication information includes LTE neighbor cell CRS information, the NR terminal receives indication information related to LTE neighbor cell CRS interference suppression transmitted by the NR base station through radio resource control RRC signaling, including: The NR terminal receives a list which is sent by the NR base station through RRC signaling and contains one or more arrays, wherein each array in the list indicates the CRS information of the LTE neighbor cell which has CRS interference to the NR cell where the NR terminal is currently located and is known by a network side so as to indicate the NR terminal to start CRS interference suppression of the corresponding LTE neighbor cell; or the NR terminal receives release information of the whole list or part of the array sent by the NR base station through RRC signaling, so as to instruct the NR terminal to release the list or release the part of the array in the list, and close CRS interference suppression of the corresponding LTE neighbor cell.
  9. 9. An information transmission method, comprising The method comprises the steps that an NR base station receives LTE neighbor cell CRS interference suppression capability information reported by an NR terminal, wherein the LTE neighbor cell CRS interference suppression capability information comprises whether the NR terminal supports the LTE neighbor cell CRS interference suppression without the network side transmitting the LTE neighbor cell CRS information; The NR base station sends indication information related to LTE neighbor cell CRS interference suppression to the NR terminal through RRC signaling, wherein the indication information comprises one or more of enabling control information of LTE neighbor cell CRS interference suppression and/or LTE neighbor cell CRS information, the LTE neighbor cell CRS information comprises one or more of identification information, CRS port number, MBSFN subframe configuration information, a central carrier and system bandwidth, time slot number information and a used cyclic prefix and a duplex mode of the LTE neighbor cell, and when the indication information comprises the LTE neighbor cell CRS information, the NR base station indicates the NR terminal to apply the CRS port number or MBSFN subframe configuration information in LTE CRS configuration co-sited with the current NR cell when the indication information comprises the LTE neighbor cell CRS information.
  10. 10. The method of claim 9, wherein the step of determining the position of the substrate comprises, And the NR base station sends indication information related to the CRS interference suppression of the LTE neighbor cell to the NR terminal according to the CRS interference suppression capability information of the LTE neighbor cell of the NR terminal and the LTE neighbor cell information of the NR cell where the NR terminal is currently located.
  11. 11. The method of claim 10, wherein the step of determining the position of the first electrode is performed, The NR base station sends indication information related to LTE neighbor cell CRS interference suppression to the NR terminal according to the LTE neighbor cell CRS interference suppression capability information of the NR terminal and the LTE neighbor cell information of the NR cell where the NR terminal is currently located, and the indication information comprises: The NR base station determines that the NR terminal supports CRS interference suppression of an LTE neighbor cell according to the CRS interference suppression capability information of the LTE neighbor cell of the NR terminal and the LTE neighbor cell information of an NR cell where the NR terminal is currently located, and when the LTE neighbor cell has CRS interference to the NR cell where the NR terminal is currently located, the NR base station sends enabling control information for starting the CRS interference suppression of the LTE neighbor cell and/or the CRS information of the LTE neighbor cell to the NR terminal; Or, the NR base station sends enabling control information for closing CRS interference suppression of the LTE neighbor cell to the NR terminal according to the CRS interference suppression capability information of the LTE neighbor cell of the NR terminal and the LTE neighbor cell information of the NR cell where the NR terminal is currently located; Or, the NR base station determines that the NR terminal supports CRS interference suppression of an LTE neighbor cell according to the CRS interference suppression capability information of the LTE neighbor cell of the NR terminal and the LTE neighbor cell information of an NR cell where the NR terminal is currently located, and sends enabling control information for closing the CRS interference suppression of the LTE neighbor cell to the NR terminal when the LTE neighbor cell does not have CRS interference on the NR cell where the NR terminal is currently located; or, the NR base station determines that the NR terminal supports the CRS interference suppression of the LTE neighbor cell based on blind detection according to the CRS interference suppression capability information of the LTE neighbor cell of the NR terminal and the LTE neighbor cell information of the NR cell where the NR terminal is currently located, and sends enabling control information for starting the CRS interference suppression of the LTE neighbor cell and/or the CRS information of the LTE neighbor cell to the NR terminal when the LTE neighbor cell has CRS interference on the NR cell where the NR terminal is currently located; Or the NR base station determines that the NR terminal supports LTE neighbor cell CRS interference suppression, does not support LTE neighbor cell CRS interference suppression based on blind detection and sends LTE neighbor cell CRS information to the NR terminal when the LTE neighbor cell has CRS interference to the NR cell where the NR terminal is currently located according to the LTE neighbor cell CRS interference suppression capability information of the NR terminal and the LTE neighbor cell information of the NR cell where the NR terminal is currently located.
  12. 12. The method of any of claims 9-11, wherein the LTE neighbor cell CRS interference suppression capability information further includes one or more of: whether the NR terminal supports CRS interference suppression of the LTE neighbor cell or not; when the new air interface subcarrier spacing is 30k, whether the NR terminal supports CRS interference suppression of the LTE neighbor cell or not; whether the NR terminal supports CRS interference suppression of LTE neighbor cells in an asynchronous system.
  13. 13. The method of claim 12, wherein the step of determining the position of the probe is performed, The value of whether the NR terminal supports the CRS interference suppression of the LTE neighbor cell indicates whether the NR terminal supports the CRS interference suppression of the LTE neighbor cell, the number of LTE neighbor cells which can be supported by the NR terminal and used for performing the CRS interference suppression of the LTE neighbor cell, or the number of carrier units which can be supported by the NR terminal under the carrier aggregation scene and used for simultaneously performing the CRS interference suppression of the LTE neighbor cell.
  14. 14. The method according to any one of claims 9 to 11, wherein, The enabling control information of the CRS interference suppression of the LTE neighbor cells is sent through the LTE-CRS-ToMatchAround signaling or other RRC signaling except the LTE-CRS-ToMatchAround signaling.
  15. 15. The method according to any one of claims 9-11, wherein, if the duplexing mode is TDD, the LTE neighbor cell CRS information further includes uplink and downlink subframe proportioning information.
  16. 16. The method according to any one of claims 9 to 11, wherein, When the indication information includes LTE neighbor cell CRS information, the NR base station sends indication information related to LTE neighbor cell CRS interference suppression to the NR terminal, including: An NR base station sends a list containing one or more arrays to an NR terminal through RRC signaling, wherein each array in the list indicates CRS information of an LTE neighbor cell known by a network side and having CRS interference to an NR cell where the NR terminal is currently located so as to indicate the NR terminal to start CRS interference suppression of the corresponding LTE neighbor cell; Or the NR base station sends release information of the whole list or part of the array to the NR terminal through RRC signaling to instruct the NR terminal to release the list or release the part of the array in the list, and closing CRS interference suppression of the corresponding LTE neighbor cell.
  17. 17. An NR base station comprising: memory, and A processor coupled to the memory, the processor configured to perform the method of any of claims 9-16 based on instructions stored in the memory.
  18. 18. An NR terminal comprising: 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.
  19. 19. A communication system, comprising: The NR base station of claim 17, and The NR terminal of claim 18.
  20. 20. A non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method of any of claims 1-16.

Description

Information transmission method, base station, terminal and communication system The application relates to a method for transmitting information, a base station, a terminal and a communication system, which are divided into patent applications of the application, wherein the application number is 202110339566.7, the application date is 2021, and the application date is 03 and 30. Technical Field The present disclosure relates to the field of mobile communications, and in particular, to an information transmission method, a base station, a terminal, and a communication system. Background The dynamic spectrum sharing (Dynamic Spectrum Sharing, DSS) technology between 4G (4 th, 4 th generation) LTE (Long Term Evolution ) and 5G (5 th, 5 th generation) NR (New Radio, new air interface) is that an LTE terminal shares the same spectrum with an NR terminal, and a network side dynamically allocates resources for the terminal to perform 4G or 5G transmission according to conditions such as network load. The downlink cell reference signal (CELL REFERENCE SIGNAL, CRS) of the neighboring cell 4G LTE system operating in DSS mode, which is always on and occupies fixed resources, can cause larger interference to the reception of the NR terminal using 5G in the present cell. And when the LTE neighbor cell schedules downlink data transmission on a channel quality measurement reference signal (namely, CSI-RS (CHANNEL STATE Information REFERENCE SIGNAL, channel state Information-reference signal)) time-frequency resource of the NR cell, the terminal can report channel quality Information based on interference suppression to an NR base station through measurement, estimation and equalization algorithms of the CSI-RS, wherein the Information comprises the interference suppression of the neighbor cell including the CRS interference. At this time, the NR base station matches the actual transmission quality based on the scheduling of the channel quality information. However, if the LTE neighbor cell does not allocate downlink data transmission on the NR channel quality measurement reference signal, the channel quality detection of the NR terminal on the radio channel does not include CRS interference of the neighbor cell, that is, at this time, the channel quality information reported to the base station by the NR terminal cannot reflect the reception quality of the NR terminal under CRS interference, which results in a decrease in the accuracy of the base station performing operations such as resource allocation and scheduling. Disclosure of Invention According to the embodiment of the disclosure, the NR terminal reports the LTE neighbor cell CRS interference suppression capability information of the NR terminal to the NR base station, and the NR base station receives the LTE neighbor cell CRS interference suppression capability information reported by the NR terminal so as to assist the base station to accurately make decisions. Some embodiments of the present disclosure provide an information transmission method, which includes that a new air interface NR terminal reports CRS interference suppression capability information of a long term evolution LTE neighbor cell reference signal of the present NR terminal to an NR base station. In some embodiments, the NR terminal receives indication information related to LTE neighbor cell CRS interference suppression sent by the NR base station through radio resource control RRC signaling, where the indication information includes one or more of LTE neighbor cell CRS interference suppression enabling control information or LTE neighbor cell CRS information. In some embodiments, the NR terminal performs interference suppression according to the indication information. In some embodiments, the NR terminal performs interference suppression according to the indication information, including: If the indication information comprises enabling control information of LTE neighbor cell CRS interference suppression, the NR terminal starts or closes LTE neighbor cell CRS interference suppression according to the enabling control information of LTE neighbor cell CRS interference suppression; And if the indication information comprises LTE neighbor cell CRS information, the NR terminal starts LTE neighbor cell CRS interference suppression according to the LTE neighbor cell CRS information and performs interference detection at a position corresponding to the LTE neighbor cell CRS information. Some embodiments of the present disclosure provide an information transmission method, which includes that an NR base station receives CRS interference suppression capability information of an LTE neighboring cell reported by an NR terminal. In some embodiments, the NR base station sends indication information related to LTE neighbor cell CRS interference suppression to the NR terminal through RRC signaling, where the indication information includes one or more of LTE neighbor cell CRS interference suppression ena