The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 07, 2013
Filed:
Aug. 22, 2007
He Wang, Shanghai, CN;
Zhongji HU, Shanghai, CN;
Yonggang Wang, Shanghai, CN;
Hua Chao, Shanghai, CN;
Yu Chen, Shanghai, CN;
Pingping Xing, Shanghai, CN;
He Wang, Shanghai, CN;
Zhongji Hu, Shanghai, CN;
Yonggang Wang, Shanghai, CN;
Hua Chao, Shanghai, CN;
Yu Chen, Shanghai, CN;
Pingping Xing, Shanghai, CN;
Alcatel Lucent, Paris, FR;
Abstract
Discloses is a gateway, base station, communication network and synchronization method thereof. The method comprises: at time T, sending from the gateway to the base stations a synchronization request signal; at time T, receiving by the base stations the synchronization request signal; at time T, sending from the base stations to the gateway the synchronization response comprising the times Tand T; at time T, receiving by the gateway the synchronization response signals; and calculating for the base stations a mapping relationship between the time system of the gateway and the time system of the base station is calculated based on the times T, T, Tand T. With the configuration and method proposed in present invention, it can be avoided the problem that accurate synchronization between the gateway and the base stations can not be reached for MBMS data packets in LTE because of path delay and jitter error, so that every base station can specify the same transmitting time for MBMS data packets to guarantee that UE could implement correct RF combining.