United States Patent 7,864,798
Chandra , et al. January 4, 2011
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Method and apparatus for supporting voice over IP services over a cellular wireless communication network
Abstract
A method and system for supporting voice over Internet protocol (VoIP) services over a wireless communication network are disclosed. Data is encoded at a coding rate specified by a controller for generating a VoIP packet. Among the encoded data, bits sensitive to errors and bits not sensitive to errors are identified and error protection is performed separately by a medium access control layer and/or physical layer. A header of the VoIP packet may be selectively compressed in accordance with an indication from the controller. A user datagram protocol (UDP)-Lite may be used for partial coverage of the sensitive bits. A comfort noise may be generated by a receiving end during a silence period without receiving a comfort noise packet from a transmitting end. If the VoIP packet is not fit into a currently assigned radio resource, the VoIP packet may be fragmented.
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Inventors: Chandra; Arty (Manhasset Hills, NY), Terry; Stephen E. (Northport, NY), Sammour; Mohammed (Montreal, CA), Wang; Jin (Central Islip, NY)
Assignee: InterDigital Technology Corporation (Wilmington, DE)
Appl. No.: 11/560,590
Filed: November 16, 2006
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Related U.S. Patent Documents
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Application Number Filing Date Patent Number Issue Date
60737609 Nov., 2005
60839197 Aug., 2006
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Current U.S. Class: 370/466 ; 370/469; 714/751; 714/752
Current International Class: H03M 13/03 (20060101)
Field of Search: 370/328,338,400,401,465,466,469 714/746,751,752,758,774,799
PPP
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