Uplink synchronization processing method, user equipment, and base station

• US 9,131,435 B2
• Filed: 12/26/2013
• Issued: 09/08/2015
• 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:
  US14/140,902
• Publication Number:
  US 20140105169A1
• Time in Patent Office: 621 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); and

performing 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.

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

3. 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, apply the TA value of the currently used CC on the one or multiple CCs.

4. 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.

5. 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.

6. 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.