Uplink synchronization processing method, user equipment, and base station

• US 9,220,077 B2
• Filed: 04/14/2014
• Issued: 12/22/2015
• 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 S
• Application Number:
  US14/252,365
• Publication Number:
  US 20140219271A1
• Time in Patent Office: 617 Days
• US Class Current: 1/1
• 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:

receiving an uplink synchronization indication message sent by a 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 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 a CC on which the uplink synchronization needs to be executed;

wherein the synchronization signaling is a dedicated preamble.

2. The uplink synchronization processing method according to claim 1, wherein the uplink synchronization indication message is a CC reconfiguration message, and the receiving the TA adjusting message that is sent by the base station according to the synchronization signaling comprises:

receiving an extended TA value adjusting command that is 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.

3. The uplink synchronization processing method according to claim 1, wherein if the uplink synchronization indication message is a physics downlink control channel (PDCCH) signaling,

receiving the TA adjusting message that is sent by the base station according to the synchronization signaling comprises:

receiving an extended TA value adjusting command that is sent by the base station according to the synchronization signaling.

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

5. The uplink synchronization processing method according to claim 1, 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.

6. The uplink synchronization processing method according to claim 1, further comprising:

applying a unique TA value of a currently used CC to all or a part of CCs on which the uplink synchronization does not need to be executed on the one or multiple newly configured CCs when knowing, according to the uplink synchronization indication message, that the uplink synchronization does not need to be executed on all or a part of the one or multiple newly configured CCs.

7. An uplink synchronization processing method, comprising:

sending an uplink synchronization indication message to a User Equipment (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, wherein the synchronization signaling is a dedicated preamble;

sending a time advanced (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 if the uplink synchronization indication message sent to the UE is a CC reconfiguration message, the 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 of the UE, which is on one newly configured CC and requires adjustment, or, the extended TA value adjusting command comprises one or multiple TA values of the UE, which are on the multiple newly configured CCs and require adjustment, and identification information of a CC corresponding to each TA value.

9. The uplink synchronization processing method according to claim 7, wherein if the uplink synchronization indication message sent to the UE is a physics downlink control channel (PDCCH) signaling,

sending the TA adjusting message to the UE comprises:

sending an extended TA value adjusting command to the UE;

or

sending a CC reconfiguration message to the UE, wherein the CC reconfiguration message comprises a TA value of the UE, which is on the one newly configured CC and requires adjustment, or, the CC reconfiguration message comprises one or multiple TA values of the UE, which are on the multiple newly configured CCs and require adjustment, and identification information of the CC corresponding to each TA value.

10. The uplink synchronization processing method according to claim 7, wherein sending the uplink synchronization indication message to the UE comprises:

sending the uplink synchronization indication message to the UE, wherein bit indication information in the uplink synchronization indication message is used to indicate that the uplink synchronization needs to be executed on all or a part of the one or multiple newly configured CCs, or sending the uplink synchronization indication message to the UE, wherein distribution information of the synchronization signaling in the uplink synchronization indication message is used to represent that the uplink synchronization needs to be executed on all or a part of the one or multiple newly configured CCs;

or

sending the uplink synchronization indication message carrying TA value indication information to the UE, wherein when a TA value on any CC in the one newly configured CC is the same as a TA value of any CC in currently used one or multiple CCs, the indicated TA value comprises;

the TA value which is on the one newly configured CC and requires adjustment, or identification information of the currently used CC, wherein the identification information of the CC represents that the TA value required to be used on the newly configured CC is the same as the TA value on a CC corresponding to the identification information of the CC, when the TA values on the multiple newly configured CCs are the same as the TA value on the currently used CC, the indicated TA value comprises;

TA values respectively corresponding to the multiple newly configured CCs, indices of the TA values respectively corresponding to the multiple newly configured CCs, or a index of the currently used CC, and the TA value required to be used by the newly configured CC is the same as the TA value of a CC corresponding to the index of the CC.

11. A User Equipment (UE), comprising:

a first receiving module, configured to receive an uplink synchronization indication message sent by a base station, wherein the uplink synchronization indication message carries identification information of one or multiple newly configured component carriers (CCs);

a first sending module, 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;

a first processing module, configured to apply a time advanced (TA) value carried in a TA adjusting message to a CC on which the uplink synchronization needs to be executed, after the first receiving module receives the TA adjusting message that is sent by the base station according to the synchronization signaling; and

wherein the synchronization signaling is a dedicated preamble.

12. The UE according to claim 11, wherein if the uplink synchronization indication message received by the first receiving module is a CC reconfiguration message, the first receiving module is further configured to receive an extended TA value adjusting command that is sent by the base station according to the synchronization signaling, wherein the extended TA value adjusting command comprises a TA value which is on the one newly configured CC and requires adjustment, or the extended TA value adjusting command comprises one or multiple TA values which are on the multiple newly configured CCs and require adjustment, and the identification information of the CC corresponding to each TA value;

if the uplink synchronization indication message received by the first receiving module is a physics downlink control channel (PDCCH) signaling, the first receiving module is further configured to receive an extended TA value adjusting command that is sent by the base station according to the synchronization signaling, or the first receiving module is further configured to receive a CC reconfiguration message that is sent by the base station according to the synchronization signaling, and the CC reconfiguration message comprises a TA value which is on the one newly configured CC and requires adjustment, or the CC reconfiguration message comprises one or multiple TA values which are on the multiple newly configured CCs and require adjustment, and the identification information of the CC corresponding to each TA value.

13. The UE according to claim 11, wherein the first sending module is configured to send the synchronization signaling to the base station when 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 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.

14. The UE according to claim 11, wherein the first sending module is configured to send the synchronization signaling to the base station when 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.

15. The UE according to claim 11, wherein the first processing module, is further configured to apply a unique TA value of a currently used CC to all or a part of CCs on which the uplink synchronization does not need to be executed on the one or multiple newly configured CCs when knowing, according to the uplink synchronization indication message, that the uplink synchronization does not need to be executed on all or a part of the one or multiple newly configured CCs.

16. A base station, comprising:

a second sending module, configured to send an uplink synchronization indication message to a User Equipment (UE), wherein the uplink synchronization indication message carries identification information of one or multiple newly configured component carriers (CCs); and

a second receiving module, configured to receive synchronization signaling sent by the UE, wherein the synchronization signaling is a dedicated preamble; and

the second sending module is further configured to send a time advanced (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.

17. The base station according to claim 16, wherein if the uplink synchronization indication message sent by the second sending module to the UE is a CC reconfiguration message, the second sending module is further configured to send an extended TA value adjusting command to the UE, the extended TA value adjusting command comprises a TA value of the UE, which is on the one newly configured CC and requires adjustment, or the extended TA value adjusting command comprises one or multiple TA values of the UE, which are on the multiple newly configured CCs and require adjustment, and the identification information of a CC corresponding to each TA value;

if the uplink synchronization indication message sent by the second sending module is a physics downlink control channel PDCCH signaling, the second sending module is further configured to send an extended TA value adjusting command to the UE, or the second sending module is further configured to send a CC reconfiguration message to the UE, and the CC reconfiguration message comprises a TA value of the UE, which is on the one newly configured CC and requires adjustment, or the CC reconfiguration message comprises one or multiple TA values of the UE, which are on the multiple newly configured CCs and require adjustment, and the identification information of the CC corresponding to each TA value.

18. The base station according to claim 16, wherein the uplink synchronization indication message comprises:

bit indication information, which is used to indicate that the uplink synchronization needs to be executed on all or a part of the one or multiple newly configured CCs;

or

distribution information, which is used to represent that the uplink synchronization needs to be executed on all or a part of the one or multiple newly configured CCs;

or

TA value indication information, wherein when a TA value on any CC in the one newly configured CC is the same as a TA value of any CC in currently used one or multiple CCs, the indicated TA value comprises;

the TA value which is on the one newly configured CC and requires adjustment, or identification information of the currently used CC, wherein the identification information of the CC represents that the TA value required to be used on the newly configured CC is the same as the TA value on a CC corresponding to the identification information of the CC, when the TA values on the multiple newly configured CCs are the same as the TA value on the currently used CC, the indicated TA value comprises;

TA values respectively corresponding to the multiple newly configured CCs, indices of the TA values respectively corresponding to the multiple newly configured CCs, or a index of the currently used CC, and the TA value required to be used by the newly configured CC is the same as the TA value of a CC corresponding to the index of the CC.