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.

Date of Patent:
Jan. 15, 2013

Filed:

May. 07, 2009
Applicants:

Ning Liao, Beijing, CN;

Yun Tao Shi, Beijing, CN;

Jun LI, Cranbury, NJ (US);

Inventors:

Ning Liao, Beijing, CN;

Yun Tao Shi, Beijing, CN;

Jun Li, Cranbury, NJ (US);

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04W 4/06 (2009.01);
U.S. Cl.
CPC ...
Abstract

It provides a method for multicast group management. The apparatus determines a request for joining a multicast service derived during establishment of a connection for carrying multicast service between a first device and a second device, and it sends a message indicative of joining said multicast service based on the request for joining if the multicast service is not available in said network device. As a consequence, it reduces the messages exchanged in unreliable wireless connection so as to reduce the probability of service interruption.


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