Information sending method and apparatus

Patent metadata

Field	Value
Publication number	US-2016100419-A1
Application number	US-201514971077-A
Country	US
Kind code	A1
Filing date	Dec 16, 2015
Priority date	Aug 2, 2013
Publication date	Apr 7, 2016
Grant date	—

Abstract

Embodiments of the present invention provide an information sending method and apparatus, where direct communication is performed between user devices in a first subframe, and channel state information of direct communication performed between the user devices is sent to a third device in a second subframe, so that the third device can learn the channel state information between the user devices, and further perform resource scheduling for the user devices performing direct communication.

First claim

What is claimed is:

1 . An information sending method, comprising:
performing, by a first user device, direct communication with a second user device in a first subframe; sending, by the first user device, channel state information of direct communication performed between the first user device and the second user device to a third device in a second subframe; and receiving, by the first user device, resource scheduling information that is sent by the third device according to the channel state information.

2 . The method according to claim 1 , wherein the first user device further sends communication state information of direct communication performed between the first user device and the second user device to the third device in the second subframe, wherein the communication state information is used to perform charging or release a link.

3 . The method according to claim 1 , wherein the channel state information of direct communication performed between the first user device and the second user device comprises at least one of: channel state information of resources that have been allocated to the first user device and the second user device for performing direct communication, channel state information of resources that have not been allocated to the first user device and the second user device for performing direct communication, and channel state information of resources within a system bandwidth range.

4 . The method according to claim 2 , wherein the communication state information of direct communication performed between the first user device and the second user device comprises at least one of: communication data amount information of direct communication performed between the first user device and the second user device, and communication releasing information of direct communication performed between the first user device and the second user device.

5 . The method according to claim 3 , wherein the channel state information of resources that have been allocated to the first user device and the second user device for performing direct communication comprises:
a resource identifier of a resource that has been used and is in the resources that have been allocated to the first user device and the second user device for performing direct communication; or, a resource identifier of a resource that has not been used and is in the resources that have been allocated to the first user device and the second user device for performing direct communication; the channel state information of resources that have not been allocated to the first user device and the second user device for performing direct communication comprises: resource identifiers of some or all resources in the resources that have not been allocated to the first user device and the second user device for performing direct communication; and the channel state information of resources within a system bandwidth range comprises: resource identifiers of some or all resources in the resources within the system bandwidth range.

6 . The method according to claim 1 , wherein before the sending, by the first user device, channel state information of direct communication performed between the first user device and the second user device to a third device in a second subframe, the method further comprises:
receiving, by the first user device, trigger signaling sent by the third device, wherein the trigger signaling is used to trigger the first user device to send at least one of the channel state information and the communication state information to the third device.

7 . The method according to claim 1 , wherein each sending period comprises the first subframe and the second subframe, and the performing, by a first user device, direct communication with a second user device in a first subframe comprises:
performing, by the first user device, direct communication with the second user device in the first subframe of each sending period; the sending, by the first user device, channel state information of direct communication performed between the first user device and the second user device to a third device in a second subframe comprises: sending, by the first user device, the channel state information of direct communication performed between the first user device and the second user device to the third device in the second subframe of at least one sending period; and the further sending, by the first user device, communication state information of direct communication performed between the first user device and the second user device to the third device in the second subframe comprises: further sending, by the first user device, the communication state information of direct communication performed between the first user device and the second user device to the third device in the second subframe of at least one sending period.

8 . The method according to claim 7 , wherein a period in which the first user device sends the channel state information to the third device in the second subframe is less than a period in which the first user device sends the communication state information to the third device in the second subframe.

9 . The method according to claim 1 , wherein the second subframe is a part of the first subframe; or, the second subframe does not overlap the first subframe.

10 . An information sending method, comprising:
receiving, by a third device, channel state information that is sent by a first user device or a second user device in a second subframe and is of direct communication performed between the first user device and the second user device; and sending, by the third device, resource scheduling information to the first user device or the second user device according to the channel state information.

11 . The method according to claim 10 , wherein the method further comprises:
receiving, by the third device, communication state information that is sent by the first user device or the second user device in the second subframe and is of direct communication performed between the first user device and the second user device; and performing charging or releasing a link, by the third device according to the communication state information.

12 . A user device, comprising:
a communications module, configured to perform direct communication with a second user device in a first subframe; a sending module, configured to send channel state information of direct communication performed between the user device and the second user device to a third device in a second subframe; and a receiving module, configured to receive resource scheduling information that is sent by the third device according to the channel state information.

13 . The user device according to claim 12 , wherein the sending module is further configured to send communication state information of direct communication performed between the user device and the second user device to the third device in the second subframe, wherein the communication state information is used to perform charging or release a link.

14 . The user device according to claim 12 , wherein the channel state information of direct communication performed between the user device and the second user device comprises at least one of: channel state information of resources that have been allocated to the user device and the second user device for performing direct communication, channel state information of resources that have not been allocated to the user device and the second user device for performing direct communication, and channel state information of resources within a system bandwidth range.

Assignees

• Huawei Device Co Ltd

Inventors

• Wang Jian

Classifications

• H04W72/0446

  Resources in time domain, e.g. slots or frames · CPC title

• H04W76/14

  Direct-mode setup · CPC title

• H04W72/542 Primary

  using measured or perceived quality · CPC title

• H04W72/54 Primary

  based on quality criteria · CPC title

• H04B7/0626

  Channel coefficients, e.g. channel state information [CSI] · CPC title