Uplink synchronization processing method, user equipment, and base station

• US 9,743,366 B2
• Filed: 08/11/2015
• Issued: 08/22/2017
• Est. Priority Date: 09/15/2009
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Chang, Junren, Li, Yajuan, Song, Weiwei, Zhang, Liangliang, Quan, Wei, Qin, Zhongbin, Zhang, Jian
• Primary Examiner(s): Han, Clemence
• Application Number:
  US14/823,278
• Publication Number:
  US 20150351062A1
• Time in Patent Office: 742 Days
• CPC Class Codes: H04W 56/00 Synchronisation arrangements
• CPC Class Codes: H04W 56/0005 synchronizing of arrival of multiple uplinks
• CPC Class Codes: H04W 56/005 compensating for timing error by adjustment in the receiver
• CPC Class Codes: H04W 56/0055 determining timing error of reception due to propagation delay
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 88/02 Terminal devices
• CPC Class Codes: H04W 88/04 adapted for relaying to or from another terminal or user
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

An uplink synchronization processing method, a user equipment (UE), and a base station are provided. The method includes: receiving a component carrier (CC) uplink synchronization indication message sent by a base station, where the uplink synchronization indication message carries identification information of one or multiple newly configured CCs; sending synchronization signaling to the base station when knowing that the uplink synchronization needs to be executed on all or a part of the one or multiple newly configured CCs corresponding to the identification information; and receiving a time advanced (TA) adjusting message that is sent by the base station according to the synchronization signaling, and applying a TA value carried in the TA adjusting message to the CC on which the uplink synchronization needs to be executed.

Claims

1. An uplink synchronization processing method, comprising:

when working on a currently used component carrier (CC), receiving CC group information sent by a base station, wherein the CC group information is used to instruct CCs in a same CC group which can use a same time advanced (TA) value;

receiving an uplink synchronization indication message sent by the base station, wherein the uplink synchronization indication message carries identification information of one or multiple newly configured component carriers CCs;

sending synchronization signaling to the base station when knowing that uplink synchronization needs to be executed on all or a part of the one or multiple newly configured CCs corresponding to the identification information; and

receiving a TA adjusting message sent by the base station according to the synchronization signaling, and applying a TA value carried in the TA adjusting message to a CC on which the uplink synchronization needs to be executed.

2. The uplink synchronization processing method according to claim 1, wherein if the one or multiple newly configured CCs and the currently used CC belong to the same CC group, applying a TA value of the currently used CC on the one or multiple CCs.

3. The uplink synchronization processing method according to claim 1, wherein:

the uplink synchronization indication message is a CC reconfiguration message or a physics downlink control channel (PDCCH) signaling; and

receiving the TA adjusting message sent by the base station according to the synchronization signaling comprises;

receiving an extended TA value adjusting command sent by the base station according to the synchronization signaling, wherein the extended TA value adjusting command comprises a TA value which needs to be adjusted on the one newly configured CC.

4. The uplink synchronization processing method according to claim 1, wherein:

the uplink synchronization indication message is a CC reconfiguration message or a physics downlink control channel (PDCCH) signaling; and

receiving the TA adjusting message sent by the base station according to the synchronization signaling comprises;

receiving an extended TA value adjusting command sent by the base station according to the synchronization signaling, wherein the extended TA value adjusting command comprises one or multiple TA values which needs to be adjusted on the multiple newly configured CCs and identification information of a CC corresponding to each TA value.

5. The uplink synchronization processing method according to claim 1, wherein knowing that the uplink synchronization needs to be executed on all or apart of the one or multiple newly configured CCs corresponding to the identification information comprises:

knowing that the uplink synchronization needs to be executed on all or a part of the one or multiple newly configured CCs, according to bit indication information in the uplink synchronization indication message, wherein the bit indication information is used to indicate whether the uplink synchronization needs to be executed on all or a part of the one or multiple newly configured CCs.

6. The uplink synchronization processing method according to claim 1, wherein knowing that the uplink synchronization needs to be executed on all or apart of the one or multiple newly configured CCs corresponding to the identification information comprises:

knowing that the uplink synchronization needs to be executed on the all or a part of the one or multiple newly configured CCs, according to distribution information of the synchronization signaling in the uplink synchronization indication message.

7. An uplink synchronization processing method, comprising:

sending component carrier (CC) group information to a user equipment (UE) which is working on a currently used CC, wherein the CC group information is used to instruct CCs in a same CC group which can use a same time advanced (TA) value;

sending an uplink synchronization indication message to the UE, wherein the uplink synchronization indication message carries identification information of one or multiple newly configured component carriers CCs;

receiving synchronization signaling sent by the UE;

sending a TA adjusting message to the UE according to the synchronization signaling, to instruct the UE to apply a TA value carried in the TA adjusting message to a CC on which the uplink synchronization needs to be executed.

8. The uplink synchronization processing method according to claim 7, wherein:

the uplink synchronization indication message sent to the UE is a CC reconfiguration message or a physics downlink control channel (PDCCH) signaling; and

sending the TA adjusting message to the UE comprises;

sending an extended TA value adjusting command to the UE, wherein the extended TA value adjusting command comprises a TA value which needs to be adjusted on the one newly configured CC.

9. The uplink synchronization processing method according to claim 7, wherein the uplink synchronization indication message comprises bit indication information used to indicate whether the uplink synchronization needs to be executed on all or a part of the one or multiple newly configured CCs.

10. The uplink synchronization processing method according to claim 7, wherein the uplink synchronization indication message comprises distribution information of the synchronization signaling.

11. A user equipment (UE), comprising:

a receiver, configured to receive component carrier (CC) group information and an uplink synchronization indication message sent by a base station when the UE is working on a currently used CC, wherein the CC group information is used to instruct CCs in a same CC group which can use a same time advanced (TA) value, and the uplink synchronization indication message carries identification information of one or multiple newly configured component carriers CCs;

a transmitter, configured to send synchronization signaling to the base station when knowing that uplink synchronization needs to be executed on all or a part of the one or multiple newly configured CCs corresponding to the identification information; and

a processor, configured to apply a TA value carried in a TA adjusting message to a CC on which the uplink synchronization needs to be executed, after the receiver receives the TA adjusting message sent by the base station according to the synchronization signaling.

12. The UE according to claim 11, wherein if the one or multiple newly configured CCs and the currently used CC belong to the same CC group, the processor is further configured to apply the TA value of a currently used CC on the one or multiple CCs.

13. The UE according to claim 11, wherein if the uplink synchronization indication message received by the receiver is a CC reconfiguration message or a physics downlink control channel (PDCCH) signaling, the TA adjusting message received by the receiver is an extended TA value adjusting command, wherein the extended TA value adjusting command comprises a TA value which needs to be adjusted on the one newly configured CC.

14. The UE according to claim 11, wherein if the uplink synchronization indication message received by the receiver is a CC reconfiguration message or a physics downlink control channel (PDCCH) signaling, the TA adjusting message received by the receiver is an extended TA value adjusting command, wherein the extended TA value adjusting command comprises one or multiple TA values which needs to be adjusted on the multiple newly configured CCs and identification information of a CC corresponding to each TA value.

15. The UE according to claim 11, wherein knowing that the uplink synchronization needs to be executed on all or a part of the one or multiple newly configured CCs corresponding to the identification information comprises:

knowing that the uplink synchronization needs to be executed on all or a part of the one or multiple newly configured CCs, according to bit indication information in the uplink synchronization indication message, wherein the bit indication information is used to indicate whether the uplink synchronization needs to be executed on all or a part of the one or multiple newly configured CCs.

16. The UE according to claim 11, wherein knowing that the uplink synchronization needs to be executed on all or a part of the one or multiple newly configured CCs corresponding to the identification information comprises:

knowing that the uplink synchronization needs to be executed on the all or a part of the one or multiple newly configured CCs, according to distribution information of the synchronization signaling in the uplink synchronization indication message.

17. A base station, comprising:

a transmitter, configured to send component carrier (CC) group information and an uplink synchronization indication message to a user equipment (UE) which is working on a currently used CC, wherein the CC group information is used to instruct CCs in a same CC group which can use a same time advanced (TA) value, and the uplink synchronization indication message carries identification information of one or multiple newly configured component carriers CCs;

a receiver, configured to receive synchronization signaling sent by the UE; and

wherein the transmitter is further configured to send a TA adjusting message to the UE according to the synchronization signaling, to instruct the UE to apply a TA value carried in the TA adjusting message to a CC on which the uplink synchronization needs to be executed.

18. The base station according to claim 17, wherein the uplink synchronization indication message sent to the UE is a CC reconfiguration message or a physics downlink control channel (PDCCH) signaling, the TA adjusting message sent by the transmitter is an extended TA value adjusting command, wherein the extended TA value adjusting command comprises a TA value which needs to be adjusted on the one newly configured CC.

19. The base station according to claim 17, wherein the uplink synchronization indication message comprises bit indication information, wherein the bit indication information is used to indicate whether the uplink synchronization needs to be executed on all or a part of the one or multiple newly configured CCs.

20. The base station according to claim 17, wherein the uplink synchronization indication message comprises distribution information of the synchronization signaling.