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BR-112020009459-B1 - METHOD FOR INDICATING FREQUENCY DOMAIN INFORMATION FROM THE COMMON CONTROL RESOURCE SET OF MINIMUM REMAINING SYSTEM INFORMATION

BR112020009459B1BR 112020009459 B1BR112020009459 B1BR 112020009459B1BR-112020009459-B1

Abstract

This disclosure relates to a method and device for indicating frequency-domain information of an RMSI CORESET, a method and device for finding the RMSI CORESET, a base station, a user device, and a computer-readable storage medium. The method for indicating the frequency-domain information of the RMSI comprises: adding indication information to a physical transmission channel (PBCH) of a synchronous transmission block (SSB), the indication information comprising the first indication information, the first indication information being used to indicate an RMSI CORESET corresponding to the SSB and whether the SSB is time-division multiplexed or frequency-division multiplexed; by means of beam scanning, transmitting the SSB carrying the indication information and the RMSI CORESET to a user device (UE). Embodiments of this disclosure allow the use of the fewest possible number of bits to indicate the frequency-domain information of the RMSI CORESET.

Inventors

  • Yang Liu

Assignees

  • BEIJING XIAOMI MOBILE SOFTWARE CO., LTD

Dates

Publication Date
20260310
Application Date
20171114

Claims (17)

  1. 1. A method for indicating relative position information of a common control resource set (CORESET) from the remaining minimum system information (RMSI), characterized by comprising: Determining, by a base station, the indication information included in a physical transmission channel (PBCH) of a synchronization signal block (SSB), the indication information comprising the first indication information and the first indication information being configured to indicate a relative position between an RMSI CORESET corresponding to the SSB and the SSB; the indication information being configured to indicate whether a portion of the bandwidth in which the core of the RMSI corresponding to the SSB is located is different from a portion of the bandwidth in which the SSB is located, the portion of the bandwidth relating to the resource unit with a certain frequency region of the frequency band; and sending, by a base station, the SSB, including the indication information and the RMSI CORESET, to the user equipment (UE).
  2. 2. Method, according to claim 1, characterized in that the first indication information is configured to indicate a relative position in the frequency domain between the RMSI CORESET corresponding to the SSB and the SSB.
  3. 3. A method according to claim 1, characterized in that, in response to the first indication information showing a relative position in the frequency domain between the RMSI CORESET corresponding to the SSB and the SSB, the indication information further comprises a second indication information, and the second indication information is configured to indicate the part of the bandwidth in which the RMSI CORESET is located is different from the part of the bandwidth in which the SSB is located.
  4. 4. A method according to claim 1, characterized in that, in response to the first indication information showing a relative position in the frequency domain between the CORESET of the RMSI corresponding to the SSB and the SSB, the indication information further comprises a third indication information, and the third indication information is configured to indicate whether the part of the bandwidth in which the CORESET of the RMSI is located is the same as the part of the bandwidth in which the SSB is located, and indicates an offset between the CORESET of the RMSI corresponding to the SSB and the SSB.
  5. 5. Method, according to claim 4, characterized in that the offset between the RMSI CORESET corresponding to the SSB and the SSB is a number of feature elements (REs) within a gap in the frequency domain between a low-frequency RE of the SSB and a high-frequency RE of the RMSI CORESET.
  6. 6. Method, according to claim 4, characterized in that the offset between the RMSI CORESET corresponding to the SSB and the SSB is a number of REs within a gap in the frequency domain between a high-frequency RE of the SSB and a low-frequency RE of the RMSI CORESET.
  7. 7. Method according to claim 1, characterized in that the first indication information is configured to indicate a relative position in the time domain between the RMSI CORESET corresponding to the SSB and the SSB; wherein the indication information comprises the fourth indication information, and the fourth indication information is configured to indicate the portion of the bandwidth in which the RMSI CORESET is located is the same as the bandwidth in which the SSB is located and indicates that a center frequency of the RMSI CORESET and a center frequency of the SSB are the same.
  8. 8. Method according to claim 1, characterized in that the first indication information is configured to indicate the RMSI CORESET corresponding to the SSB and the SSB are time-division multiplexed or frequency-division multiplexed.
  9. 9. Method for obtaining a common control resource set (CORESET) from the remaining minimum system information (RMSI), characterized in that the method comprises: receiving, by the user equipment (UE), a synchronization signal block (SSB) including indication information from a base station, the indication information comprising the first indication information and the first indication information being configured to indicate a relative position between an RMSI CORESET corresponding to the SSB and the SSB; the indication information being configured to indicate whether a portion of the bandwidth in which the RMSI CORESET corresponding to the SSB is located is different from a portion of the bandwidth in which the SSB is located, the portion of the bandwidth relating to a resource unit with a certain frequency region of the frequency band; and obtaining, by the UE, the indication information from the SSB.
  10. 10. Method, according to claim 9, characterized in that the first indication information is configured to indicate a relative position in the frequency domain between the RMSI CORESET corresponding to the SSB and the SSB.
  11. 11. Method, according to claim 9, characterized in that, in response to the first indication information indicating a relative position in the frequency domain between the RMSI CORESET corresponding to the SSB and the SSB, the indication information further comprises a second indication information and the second indication information is configured to indicate the part of the bandwidth in which the RMSI CORESET is located is different from the part of the bandwidth in which the SSB is located.
  12. 12. Method according to claim 9, characterized in that, in response to the first indication information indicating a relative position in the frequency domain between the RMSI CORESET corresponding to the SSB and the SSB, the indication information further comprises a third indication information and the third indication information is configured to indicate the part of the bandwidth in which the RMSI CORESET is located is the same as the part of the bandwidth in which the SSB is located, and indicates an offset between the RMSI CORESET corresponding to the SSB and the SSB.
  13. 13. Method, according to claim 12, characterized in that the offset between the RMSI CORESET corresponding to the SSB and the SSB is a number of feature elements (REs) within a gap in the frequency domain between a low-frequency RE of the SSB and a high-frequency RE of the RMSI CORESET.
  14. 14. Method, according to claim 12, characterized in that the offset between the RMSI CORESET corresponding to the SSB and the SSB is a number of REs within a gap in the frequency domain between a high-frequency RE of the SSB and a low-frequency RE of the RMSI CORESET.
  15. 15. Method, according to claim 9, characterized in that the first indication information is configured to indicate a relative position in the time domain between the RMSI CORESET corresponding to the SSB and the SSB; wherein the indication information comprises the fourth indication information, and the fourth indication information is configured to indicate the portion of the bandwidth in which the RMSI CORESET is located is the same as the bandwidth in which the SSB is located and indicates a center frequency of the RMSI CORESET and a center frequency of the SSB are the same.
  16. 16. Method, according to claim 9, characterized in that the first indication information is configured to indicate whether the RMSI CORESET corresponding to the SSB and the SSB is time-division multiplexed or frequency-division multiplexed.
  17. 17. User equipment (UE), characterized by comprising: a processor; and a memory device configured to store executable instructions for the processor, wherein the processor is configured to: receive a synchronization signal block (SSB) including indication information from a base station, the indication information comprising the first indication information and the first indication information being configured to indicate a relative position between an RMSI CORESET corresponding to the SSB and the SSB; the indication information is being configured to indicate whether a portion of the bandwidth in which the RMSI CORESET corresponding to the SSB is located is different from a portion of the bandwidth in which the SSB is located, the portion of the bandwidth relating to a resource unit with a certain frequency region of the frequency band; and obtain the indication information from the SSB.

Description

TECHNICAL FIELD [0001] The present invention relates generally to the technical field of communications and, more particularly, to a method and device for displaying frequency domain information from a common control resource set (CORESET) of the remaining minimum system information (RMSI), a method and device for searching for an RMSI CORESET, a base station, user equipment (UE) and a computer-readable storage medium. STATE OF THE ART [0002] In recent discussions on the third-generation partnership project (3GPP), it is proposed that how to indicate a time-frequency position of a common RMSI CORESET in a physical transmission channel (PBCH) is an important problem that needs to be solved. A length of only about 8 bits is reserved for indicating information of an RMSI CORESET in a present PBCH, and it may be necessary to reserve one or two bits for future use, which represents a major challenge for indicating a position in the frequency domain of the RMSI CORESET in a broadband system. Furthermore, it is also concluded that multiple synchronization signal blocks (SSBs) may correspond to a single RMSI chunk, which further increases the difficulties in indicating the position in the frequency domain. Furthermore, considering the fusion of PBCHs in the time domain, it is necessary that the PBCH content of the SSBs corresponding to each beam be consistent, which further restricts the degree of freedom of indication in the frequency domain of the RMSI CORESET and increases the difficulties in indication. SUMMARY OF THE INVENTION [0003] In view of this, the present application discloses a method and a device for displaying frequency domain information from an RMSI CORESET, a method and a device for searching for an RMSI CORESET, a base station, UE and a computer-readable storage medium, to display the frequency domain information from the RMSI CORESET with the minimum number of bits possible. [0004] According to a first aspect of the embodiments of the present invention, a method is provided for indicating information in the frequency domain of a common RMSI CORESET, which is applied to a base station and includes that: [0005] add indication information to a physical transmission channel (PBCH) of a synchronization signal block (SSB), the indication information including first indication information and the first indication information being configured to indicate whether an RMSI CORESET corresponding to the SSB and the SSB are time-division or frequency-division multiplexed; and [0006] sending the SSB, including the indication information and the RMSI CORESET to the user equipment (UE) in a beam scan manner. [0007] In one embodiment, in response to the first indication information indicating that the RMSI CORESET corresponding to the SSB and the SSB are frequency division multiplexed, the indication information may further include a second indication information, and the second indication information may be configured to indicate a portion of the bandwidth in which the RMSI CORESET is located. The portion of the bandwidth in which the RMSI CORESET is located may be different from a portion of the bandwidth in which the SSB is located, and the portion of the bandwidth may refer to a resource unit with a specific frequency region of a frequency band. [0008] In one embodiment, in response to the first indication information indicating that the RMSI CORESET corresponding to the SSB and the SSB are frequency division multiplexed, the indication information may further include a third indication information and the third indication information may be configured to indicate that a number of REs within a gap in the frequency domain between a low-frequency feature element (RE) of the SSB and a high-frequency RE of the RMSI CORESET is a first defined value or a number of REs within a gap in the frequency domain between a high-frequency RE of the SSB and a low-frequency RE of the RMSI CORESET is a second defined value. [0009] In one mode, the first value set can be 0 and the second value set can be 0. [0010] According to a second aspect of the embodiments of the present invention, a method is provided for searching for a common RMSI CORESET, which is applied to the UE and includes that: [0011] receiving a synchronization signal block (SSB) including indication information from a base station, the indication information including first indication information and the first indication information being configured to indicate whether an RMSI CORESET corresponding to the SSB and the SSB are time-division multiplexed or frequency-division multiplexed; and [0012] obtain the indication information by analyzing the SSB and searching the RMSI CORESET in a corresponding frequency region according to the indication information. [0013] In one embodiment, in response to the initial indication that the RMSI CORESET corresponding to the SSB and the SSB are time-division multiplexed, the operation that the RMSI CORESET is sought in the cor