Tdd uplink-downlink configuration acquiring method and apparatus

Patent metadata

Field	Value
Publication number	US-2016309453-A1
Application number	US-201615192606-A
Country	US
Kind code	A1
Filing date	Jun 24, 2016
Priority date	Dec 25, 2013
Publication date	Oct 20, 2016
Grant date	—

Abstract

Embodiments of the present disclosure provide a TDD (time division duplex) uplink-downlink configuration acquiring method and apparatus, which relate to the field of communications systems, and can reduce system signaling overheads. The method includes: first sending, by a network-side node, physical downlink control signaling and a configuration message to user equipment, and then acquiring, by the user equipment, TDD uplink-downlink configurations separately corresponding to serving cells from at least one TDD uplink-downlink configuration command according to a correspondence between each serving cell of the serving cells of the user equipment and a location, in the physical downlink control signaling, of a corresponding TDD uplink-downlink configuration command. The embodiments of the present disclosure apply to a case that user equipment applies, for serving cells, TDD uplink-downlink configurations.

First claim

1 . A TDD (time division duplex) uplink-downlink configuration acquiring method, comprising:
receiving, by a user equipment (UE), physical downlink control signaling sent by a network-side node, wherein the physical downlink control signaling comprises at least one TDD uplink-downlink configuration command, and each TDD uplink-downlink configuration command of the at least one TDD uplink-downlink configuration commands separately carries a corresponding TDD uplink-downlink configuration; receiving, by the UE, a configuration message sent by the network-side node, wherein the configuration message carries a correspondence between each serving cell of serving cells of the UE and a location, in the physical downlink control signaling, of a corresponding TDD uplink-downlink configuration command; acquiring, by the UE, TDD uplink-downlink configurations separately corresponding to the serving cells of the UE from the at least one TDD uplink-downlink configuration command according to the correspondence between each serving cell of the serving cells of the UE and a location, in the physical downlink control signaling, of a corresponding TDD uplink-downlink configuration command; and applying, by the UE, for the serving cells of the UE, the corresponding TDD uplink downlink configurations.

2 . The method according to claim 1 , wherein the configuration message carries a correspondence between an identifier of each serving cell of the serving cells of the UE and an identifier of the location, in the physical downlink control signaling, of the corresponding TDD uplink-downlink configuration command; and
the step of acquiring, by the UE, the TDD uplink-downlink configurations separately corresponding to the serving cells of the UE from the at least one TDD uplink-downlink configuration command according to the correspondence between each serving cell of the serving cells of the UE and a location, in the physical downlink control signaling, of a corresponding TDD uplink-downlink configuration command comprises:
acquiring, by the UE, the TDD uplink-downlink configurations separately corresponding to the serving cells of the UE from the at least one TDD uplink-downlink configuration command according to the correspondence between an identifier of each serving cell of the serving cells of the UE and an identifier of the location, in the physical downlink control signaling, of the corresponding TDD uplink-downlink configuration command.

3 . The method according to claim 1 , wherein
before the step of applying, by the UE, for the serving cells of the UE, the corresponding TDD uplink-downlink configurations, the method further comprises:
determining, by the UE, whether the serving cells of the UE are active serving cells; and
the step of applying, by the UE, for the serving cells of the UE, the corresponding TDD uplink-downlink configurations comprises:
if the serving cells of the UE are active serving cells, applying, by the UE, for the active serving cells, the corresponding TDD uplink-downlink configurations; or
if the serving cells of the UE are inactive serving cells, storing, by the UE, the TDD uplink-downlink configurations corresponding to the inactive serving cells.

4 . The method according to claim 1 , wherein
before the step of configuring, by the UE, for the serving cells of the UE, the corresponding TDD uplink-downlink configurations, the method further comprises:
receiving, by the UE, an indication message sent by the network-side node, wherein the indication message is used to indicate whether a configuration function of a TDD uplink-downlink configuration is enabled for the UE; and
the step of applying, by the UE, for the serving cells of the UE, the corresponding TDD uplink-downlink configurations comprises:
if the indication message indicates that the configuration function of the TDD uplink-downlink configuration is enabled for the UE, applying, by the UE, for the serving cells of the UE, the corresponding TDD uplink-downlink configurations.

5 . The method according to claim 3 , wherein
before the step of applying, by the UE, for the serving cells of the UE, the corresponding TDD uplink-downlink configurations, the method further comprises:
receiving, by the UE, an indication message sent by the network-side node, wherein the indication message is used to indicate whether a configuration function of a TDD uplink-downlink configuration is enabled for a serving cell; and
the step of applying, by the UE, for the serving cells of the UE, the corresponding TDD uplink-downlink configurations comprises:
if the indication message indicates that the configuration function of the TDD uplink-downlink configuration is enabled for the serving cell, applying, by the UE, for the serving cell of the UE, a corresponding TDD uplink-downlink configuration.

6 . The method according to claim 1 ,
wherein each TDD uplink-downlink configuration command of the at least one TDD uplink-downlink configuration command comprised in the physical downlink control signaling separately corresponds to at least one serving cell; wherein one group of serving cells that correspond to a TDD uplink-downlink configuration command is multiple serving cells in a same band.

7 . A TDD (time division duplex) uplink-downlink configuration acquiring method, comprising:
constructing, by a network-side node, physical downlink control signaling according to a correspondence between each serving cell of serving cells of a user equipment (UE) and a location, in the physical downlink control signaling, of a corresponding TDD uplink-downlink configuration command, wherein the physical downlink control signaling comprises at least one TDD uplink-downlink configuration command, and each TDD uplink-downlink configuration command of the at least one TDD uplink-downlink configuration command separately carries a corresponding TDD uplink-downlink configuration; sending, by the network-side node, the physical downlink control signaling to the UE; and sending, by the network-side node, a configuration message to the UE, wherein the configuration message carries the correspondence between each serving cell of the serving cells of the UE and a location, in the physical downlink control signaling, of a corresponding TDD uplink-downlink configuration command.

8 . The TDD uplink-downlink configuration acquiring method according to claim 7 , wherein the configuration message carries a correspondence between an identifier of each serving cell of the serving cells of the UE and an identifier of the location, in the physical downlink control signaling, of the corresponding TDD uplink-downlink configuration command.

9 . The TDD uplink-downlink configuration acquiring method according to claim 7 , wherein after the step of sending, by the network-side node, a configuration message to the UE, the method further comprises:
sending, by the network-side node, an indication message to the UE, wherein the indication message is used to indicate whether a configuration function of a TDD uplink-downlink configuration is enabled for the UE.

10 . The TDD uplink-downlink configuration acquiring method according to claim 7 , wherein after the step of sending, by the network-side node, a configuration message to the UE, the method further comprises:
sending, by the network-side node, an indication message to the UE, wherein the indication message is used to indicate whether a configuration function of a TDD uplink-downlink configuration is enabled for a serving cell;

11 . The TDD uplink-downlink configuration acquiring method according to claim 7 ,
wherein each TDD uplink-downlink configuration command of the at least one TDD uplink-downlin

Assignees

• Huawei Tech Co Ltd

Inventors

• Quan Wei
• Yang Xiaodong
• Li Chaojun
• Zhang Jian
• Hu Zhenxing

Classifications

• H04W72/23 Primary

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

• H04W72/042 Primary

  Electricity · mapped topic

• H04L5/14

  Two-way operation using the same type of signal, i.e. duplex · CPC title

• H04L5/0094

  Indication of how sub-channels of the path are allocated · CPC title

• H04W72/0446 Primary

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