Beam measurement and reporting method, network side device and mobile terminal

Patent metadata

Field	Value
Publication number	US-2020128421-A1
Application number	US-201716475025-A
Country	US
Kind code	A1
Filing date	Dec 19, 2017
Priority date	Dec 28, 2016
Publication date	Apr 23, 2020
Grant date	—

Abstract

A beam measurement and reporting method, a network side device and a mobile terminal are provided. The method includes: configuring measurement parameters and report parameters for one or more target beam groups, wherein, the measurement parameters include reference signal resources, reference signal resources corresponding to different target beam groups are different, reference signal resources for beams of at least two TRPs in the one or more target beam groups are same; transmitting the measurement parameters and the report parameters to a mobile terminal; controlling beams of the one or more target beam groups to transmit reference signals on reference signal resources corresponding to the beams, wherein the reference signals are used by the mobile terminal to perform beam measurement;
receiving a measurement report including measurement results reported by the mobile terminal based on the report parameters.

First claim

1 . A beam measurement and reporting method, the method being applied to a network side device and comprising:
configuring measurement parameters and report parameters corresponding to one or more target beam groups, wherein, the measurement parameters comprise reference signal resources, each of the one or more target beam groups comprises beams of at least two Transmission-Reception Points (TRPs), reference signal resources corresponding to different ones of the one or more target beam groups are different, and reference signal resources corresponding to beams of at least two TRPs in at least one of the one or more target beam groups are same; transmitting the measurement parameters and the report parameters to a mobile terminal, wherein the measurement parameters are used for the mobile terminal to perform measurement configuration, and the report parameters are used for the mobile terminal to perform report configuration; controlling beams of the one or more target beam groups to transmit reference signals on reference signal resources corresponding to the beams, wherein the reference signals are used by the mobile terminal to perform beam measurement; receiving a measurement report comprising measurement results reported by the mobile terminal based on the report parameters.

2 . The method according to claim 1 , wherein, before the controlling beams of the one or more target beam groups to transmit reference signals on reference signal resources corresponding to the beams, the method further comprises:
determining whether a preset beam measurement condition is met or not; in a case that the preset beam measurement condition is met, controlling beams of the one or more target beam groups to transmit reference signals on reference signal resources corresponding to the beams; wherein, the preset beam measurement condition comprises at least one of: a condition that a quality deterioration of a communication link of the mobile terminal is monitored by the network side device, a condition that a notification transmitted by the mobile terminal in case of the quality deterioration of the communication link of the mobile terminal monitored by the mobile terminal is received, or a condition that a current time reaches a preset beam measurement period.

3 . The method according to claim 1 , wherein, same reference signal resources are used for all beams in each of the one or more target beam groups.

4 . (canceled)

5 . The method according to claim 1 , wherein, all beams of the one or more target beam groups belong to beams of at least two TRPs of a same network side device, or the all beams of the one or more target beam groups belong to beams of at least two TRPs of different network side devices.

6 . (canceled)

7 . The method according to claim 1 , wherein, the measurement parameters further comprise measurement period parameters for the beam measurement and/or group identifiers of the one or more target beam groups.

8 . The method according to claim 7 , wherein, the measurement period parameters comprise period values, time offset values, and durations of measurements; and/or
an association relation is configured between the group identifiers and the reference signal resources corresponding to the one or more target beam groups, and is used by the mobile terminal to determine a target beam group to be measured, based on the reference signal resources.

9 . (canceled)

10 . The method according to claim 8 , wherein, the report parameters comprise parameters of the target beam group;
in a case that the measurement parameters comprise a group identifier of the target beam group, the parameters of the target beam group comprise the group identifier of the target beam group and a receiving power corresponding to the target beam group; in a case that the measurement parameters do not comprise the group identifier of the target beam group, the parameters of the target beam group comprise the receiving powers on reference signal resources corresponding to the target beam group.

11 . The method according to claim 10 , wherein, the report parameters further comprise reporting period parameters and/or a timing relation between beam reporting and the beam measurement, wherein the timing relation is used by the mobile terminal to perform the beam reporting after a preset time interval since the beam measurement is performed.

12 . The method according to claim 1 , wherein, before configuring the measurement parameters and the report parameters corresponding to one or more target beam groups, the method further comprises:
obtaining a location of the mobile terminal; grouping first beams and second beams to obtain the one or more target beam groups, wherein the first beams are beams pointing to the location of the mobile terminal from at least one TRP, and the second beams are beams adjacent to directions directed by the first beams; or before configuring the measurement parameters and the report parameters corresponding to one or more target beam groups, the method further comprises: dividing a public coverage area of TRPs, and configuring different beam groups to cover different sub-regions of the public coverage area; determining a first sub-region in which the mobile terminal is located, and second sub-regions adjacent to the first sub-region;
setting beam groups corresponding to the first sub-region and the second sub-regions as the one or more target beam groups;
or,
before configuring the measurement parameters and the report parameters corresponding to one or more target beam groups, the method further comprises:
dividing a public coverage area of TRPs, and configuring different beam groups to cover different sub-regions of the public coverage area;
grouping the sub-regions and obtaining at least two region groups, and setting beam groups corresponding to all sub-regions in the public coverage area as the one or more target beam groups, wherein each of the region groups comprises at least one sub-region;
the controlling beams of the one or more target beam groups to transmit reference signals on reference signal resources corresponding to the beams, comprises: performing beam-training to different ones of the region groups in a time-division manner, so as to control beams of all target beam groups in each of the region groups to transmit reference signals on reference signal resources corresponding to the beams simultaneously.

13 - 15 . (canceled)

16 . The method according to claim 1 , wherein, after the receiving a measurement report comprising measurement results reported by the mobile terminal based on the report parameters, the method further comprises:
determining a target beam group having an optimum receiving power based on the measurement report; controlling service data of the mobile terminal to be transmitted through the target beam group having the optimum receiving power; or after the receiving a measurement report comprising measurement results reported by the mobile terminal based on the report parameters, the method further comprises: determining a measurement beam group for the mobile terminal based on the measurement report, wherein the measurement beam group is a beam group for the mobile terminal to perform a Radio Resource Management (RRM) measurement; based on the measurement beam group, configuring measurement report parameters for the mobile terminal to perform the RRM measurement; receiving measurement result of the RRM measurement performed by the mobile terminal based on the measurement report parameters; performing a handover procedure to the mobile terminal based on the

Assignees

• Vivo Mobile Communication Co Ltd

Inventors

• Yang Yu
• Ding Yu

Classifications

• H04B17/327

  Received signal code power [RSCP] · CPC title

• H04W16/28 Primary

  using beam steering · CPC title

• H04W24/10 Primary

  Scheduling measurement reports {; Arrangements for measurement reports} · CPC title

• H04B7/088

  using beam selection · CPC title

• H04B7/0413

  MIMO systems · CPC title