Information Sending Method, Information Receiving Method, Apparatus and System

Patent metadata

Field	Value
Publication number	US-2017195888-A1
Application number	US-201515314512-A
Country	US
Kind code	A1
Filing date	Apr 29, 2015
Priority date	May 30, 2014
Publication date	Jul 6, 2017
Grant date	—

Abstract

Disclosed are a method for sending information, a method for receiving information, an apparatus and a system, herein the method for sending information includes the following steps: a sending end using Downlink Control Information (DCI)/Uplink Control Information (UCI) to describe information about time that an unlicensed carrier is occupied; and the sending end sending the DCI/UCI information through an licensed carrier or the unlicensed carrier. Through the present document, the problem of how to enable base stations to mutually inform about an occupation situation of the unlicensed carrier is solved, the coordination and utilization of the unlicensed carriers in a wireless communication system are facilitated the utilization rate of the unlicensed carriers is improved

First claim

What is claimed is:

1 . A method for sending information, comprising:
a sending end using Downlink Control Information, DCI, /Uplink Control Information, UCI, to describe information about time that an unlicensed carrier is occupied; and the sending end sending the DCI/UCI information through a licensed carrier or the unlicensed carrier.

2 . The method according to claim 1 , wherein the sending end using the DCI/UCI information to describe the information about time that the unlicensed carrier is occupied comprises one of the following:
the sending end using the DCI information to describe information about time that the unlicensed carrier is occupied by the sending end; and the sending end using the DCI/UCI information to describe information about time that the unlicensed carrier is occupied by other sending ends.

3 - 5 . (canceled)

6 . The method according to claim 1 , wherein the sending end sending the DCI/UCI information through the licensed carrier or the unlicensed carrier comprises:
the sending end sending the DCI/UCI information in a downlink carrier or an uplink carrier of the licensed carrier or the unlicensed carrier,
wherein the sending end sending the DCI information through the licensed carrier or the unlicensed carrier comprises: the sending end sending the DCI information through a PDCCH/ePDCCH of the licensed carrier or the unlicensed carrier or on an agreed resource;
or
under a situation that an uplink and a downlink share the same one carrier, the information about time comprising downlink sending time occupied by the sending end and uplink receiving time of the sending end; or the information about time comprising the downlink sending time occupied by the sending end and not comprising the uplink receiving time of the sending end; or the information about time comprising the downlink sending time occupied by the sending end and partial uplink receiving time of the sending end.

7 - 8 . (canceled)

9 . The method according to claim 1 , wherein the sending end using the DCI information to describe the information about time that the unlicensed carrier is occupied comprises at least one of the following:
the sending end using a PDCCH in first one, two, three or four OFDM symbols of a subframe to bear the information about time; the sending end using a PDCCH in an OFDM symbol of a second slot of a subframe to bear the information about time; and the sending end using a preset resource location of a subframe to bear the information about time; or wherein the sending end using the DCI information to describe the information about time that the unlicensed carrier is occupied further comprises: the sending end indicating a location for bearing the information about time through a PCFICH channel; or wherein the sending end sending the DCI/UCI information through the licensed carrier or the unlicensed carrier comprises: under a situation that the sending end is a base station, the sending end using an ePDCCH channel in a Physical Resource Block, PRB, at an agreed carrier location to send the DCI; or wherein the sending end using the DCI information to describe the information about time that the unlicensed carrier is occupied comprises: the sending end indicating, in a current subframe, whether a next subframe will be used by the sending end.

10 - 12 . (canceled)

13 . The method according to claim 1 , wherein the sending end using the DCI information to describe the information about time that the unlicensed carrier is occupied comprises:
the sending end using the DCI information according to a preset DCI format to bear the information about time that the unlicensed carrier is occupied, wherein the preset DCI format comprises at least one of the following: DCI format 3, 3A, 1C and a DCI format corresponding to a unique bit number.

14 . (canceled)

15 . The method according to claim 1 , wherein the sending end sending the DCI/UCI information through the licensed carrier or the unlicensed carrier comprises:
the sending end using an agreed Radio Network Temporary Identifier, RNTI, to scramble the DCI information, and sending the DCI information in a common search space of a PDCCH/ePDCCH or in an agreed resource.

16 . The method according to claim 1 , wherein the information about time is described by taking a subframe as a unit, or described by taking an OFDM symbol as a unit or described by taking a slot as a unit.

17 . The method according to claim 16 , wherein the information about time is described by taking the subframe as the unit, or described by taking the OFDM symbol as the unit or described by taking the slot as the unit comprises:
the information about time describing a subframe, an OFDM symbol or a slot which will be occupied by the sending end or other sending ends, wherein the information about time describing the subframe which will be occupied by the sending end or other sending ends comprises at least one of the following: the information about time describing that a plurality of continuous subframes starting from a current subframe are occupied; and the information about time describing patterns of subframes which will be occupied,
wherein the information about time describing the pattern of the subframes which will be occupied comprises:
if the maximum number of subframes which are allowable to be occupied at one time is N and N is less than or equal to the bit number of DCI, using first N bits in DCI to describe subframes occupied by the sending end or other sending ends in a bitmap mode.

18 - 20 . (canceled)

21 . The method according to claim 1 , wherein the sending end using the DCI information to describe the information about time that the unlicensed carrier is occupied comprises:
the sending end sending the DCI information describing the information about time in each occupied subframe, wherein the sending end sending the DCI information describing the information about time in each occupied subframe comprises: the DCI information describing information about current remaining occupied subframes.

22 - 29 . (canceled)

30 . A method for receiving information, comprising:
a receiving end monitoring Downlink Control Information, DCI, /Uplink Control Information, UCI, of an unlicensed carrier, wherein the DCI/UCI information is used by the receiving end to acquire information about time that the unlicensed carrier is occupied by a proximal sending end.

31 . The method according to claim 30 , wherein, after the receiving end monitoring the DCI/UCI information of the unlicensed carrier, the method further comprises:
the receiving end determining a use policy of the unlicensed carrier of receiving end according to the information about time, wherein the receiving end determining the use policy of the unlicensed carrier of receiving end according to the information about time comprises at least one of the following: the receiving end determining whether to continuously occupy the unlicensed carrier according to the information about time; the receiving end determining a scheduling policy of subordinate UE according to the information about time; when the receiving end needs to use the unlicensed carrier, determining that the unlicensed carrier is not used by other base stations according to the information about time, or the unlicensed carrier is used by other base stations but the use of the unlicensed carrier by the receiving end is not influenced; and under a situation that the receiving end receives information about time, forwarded by subordinate UE or a small cell,

Assignees

• Zte Corp

Inventors

• Gou Wei
• Han Xiaogang
• Peng Focai
• Zhao Yajun
• Bi Feng
• Xia Shuqiang

Classifications

• H04W72/23 Primary

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04W72/12

  Wireless traffic scheduling · CPC title

• H04W72/21

  in the uplink direction of a wireless link, i.e. towards the network · CPC title

• H04L5/005

  of common pilots, i.e. pilots destined for multiple users or terminals · CPC title

• H04L1/0023

  characterised by the signalling · CPC title