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Method and apparatus for supporting voice over ip services over a cellular wireless communication network

A technology for wireless communication networks and devices, applied in wireless communication, network traffic/resource management, error prevention/detection using return channels, etc., and can solve problems such as the inability of available resources to be suitable for grouping

Inactive Publication Date: 2008-11-19
INTERDIGITAL TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this case it is not possible to fit the grouping in the available resources

Method used

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  • Method and apparatus for supporting voice over ip services over a cellular wireless communication network
  • Method and apparatus for supporting voice over ip services over a cellular wireless communication network
  • Method and apparatus for supporting voice over ip services over a cellular wireless communication network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0053] 1. A device supporting VoIP service over a wireless communication network.

[0054] 2. The device of embodiment 1, comprising a VoIP codec for encoding transmitted data and decoding received data.

[0055] 3. The apparatus of embodiment 2, wherein the encoding rate of the VoIP codec is specified by the controller.

[0056] 4. An apparatus as in any one of embodiments 2-3, wherein error-sensitive bits and error-insensitive bits are identified in the encoded transmitted data for separate error protection.

[0057] 5. An apparatus according to any one of embodiments 2-4, comprising an IP layer for generating transmit VoIP packets by adding IP headers to encoded transmit data, and for processing receive VoIP packets.

[0058] 6. The device according to any one of embodiments 2-5, comprising an RLC layer for sequential sending of said sending VoIP packets and said receiving VoIP packets.

[0059] 7. The apparatus according to any one of embodiments 5-6, comprising a MAC la...

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PUM

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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.

Description

technical field [0001] The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and system for supporting Voice over Internet Protocol (VoIP) services over a wireless communication network. Background technique [0002] The concept of providing VoIP services over cellular wireless networks has been proposed. However, supporting VoIP services over traditional cellular wireless networks, such as Third Generation Partnership Project (3GPP) networks, is challenging. VoIP service is a variable low bit rate, delay and jitter sensitive application. Depending on the code rate and packet header compression, the data rate for VoIP services can vary from 8kbps to 42kbps. [0003] The problem with VoIP over cellular networks is the heavy load. Voice data for VoIP may be transmitted via Real-time Transport Protocol (RTP). A VoIP packet is 40 octets in total, excluding the link layer frame, which includes an IP hea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L1/00H04W28/04H04W28/06
CPCH04L1/18H04L29/06027H04L29/0653H04L69/04H04W28/04H04L69/22H04L65/80H04L29/0651H04L29/06517H04L65/608H04L29/06523H04L1/0088H04L1/1812H04L29/0604H04W28/06H04L65/607H04L65/70H04L65/65H04L65/752H04L69/16H04L12/189H04W4/08H04W8/26H04L61/4535H04L1/004H04L65/1101
Inventor 亚蒂·钱德拉史蒂芬·E·泰利穆罕默德·萨摩尔王津
Owner INTERDIGITAL TECH CORP
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