UPLINK SYNCHRONIZATION PROCESSING METHOD, USER EQUIPMENT, AND BASE STATION

• US 20120170570A1
• Filed: 03/15/2012
• Published: 07/05/2012
• 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, Quan, Wei, Zhang, Liangliang, Qin, Zhongbin, Zhang, Jian
• Granted Patent: US 8,724,617 B2
• Time in Patent Office: Days
• US Class Current: 370/350
• 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.

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 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 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.

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

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.

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

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

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

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

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

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

7. The uplink synchronization processing method according to claim 1, wherein the 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.

8. The uplink synchronization processing method according to claim 1, wherein the 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.

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

applying an indicated TA value in the uplink synchronization indication message to a newly configured CC 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.

10. 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.

11. 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;

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.

12. The uplink synchronization processing method according to claim 11, 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.

13. The uplink synchronization processing method according to claim 11, 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 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.

14. 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; and

performing the uplink synchronization on the one or multiple newly configured CCs, if knowing the one or multiple newly configured CCs and a currently used CC do not belong to the same CC group according to the identification information of the one or multiple newly configured CCs, wherein the CC group is a group of CCs which can use the same time advanced TA value.

15. The uplink synchronization processing method according to claim 14, further comprising:

receiving CC group information sent by the base station in a broadcasting message manner or through dedicated signaling message, wherein the CC group information is used to instruct CCs in the same CC group which can use the same TA value.

16. The uplink synchronization processing method according to claim 14, wherein if the one or multiple newly configured CCs and the currently used CC belong to the same CC group, apply the TA value of the currently used CC on the one or multiple CCs.

17. An uplink synchronization processing method, comprising:

sending component carrier CC group information to a User Equipment UE in a broadcasting message manner or through dedicated signaling message, wherein the CC group information is used to instruct CCs in the same CC group which can share a time advanced TA value; and

sending an uplink synchronization indication message to the UE, wherein the uplink synchronization indication message carries identification information of one or multiple newly configured CCs, wherein the identification information is for the UE performing uplink synchronization on the one or multiple newly configured CCs if the UE knows the one or multiple newly configured CCs and a currently used CC do not belong to the same CC group according to the identification information of the one or multiple newly configured CCs.

18. 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; and

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.

19. The UE according to claim 18, 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, 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, and receive a CC reconfiguration message sent by the base station, 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.

20. 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 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.

21. The base station according to claim 20, 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, 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.

22. A User Equipment UE, comprising:

a third 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; and

a third processing module, configured to execute uplink synchronization on the one or multiple newly configured CCs when knowing that the one or multiple newly configured CCs and a currently used CC do not belong to the same CC group according to the identification information of the one or multiple newly configured CCs, wherein the CC group is formed by one or multiple CCs sharing the same time advanced TA value.

23. A base station, comprising:

a third sending module, configured to send component carrier CC group information to a User Equipment UE in a broadcasting manner or through dedicated signaling, wherein the CC group information is used to instruct CCs in the same CC group to share one time advanced TA value; and

a fourth sending module, configured to send an uplink synchronization indication message to the UE, wherein the uplink synchronization indication message carries identification information of one or multiple newly configured CCs, wherein the identification information is for the UE performing uplink synchronization on the one or multiple newly configured CCs if the UE knows the one or multiple newly configured CCs and a currently used CC do not belong to the same CC group according to the identification information of the one or multiple newly configured CCs.