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Protocol and method of VIA field compression in session initiation protocol signaling for 3G wireless networks

A session initiation protocol and field technology, which is applied in wireless network protocols, wireless communication, transmission systems, etc., can solve the problem of not being able to provide compression for fields

Inactive Publication Date: 2009-08-19
KYOCERA CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, SIGCOMP still cannot provide compression for many fields in signaling messages

Method used

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  • Protocol and method of VIA field compression in session initiation protocol signaling for 3G wireless networks
  • Protocol and method of VIA field compression in session initiation protocol signaling for 3G wireless networks
  • Protocol and method of VIA field compression in session initiation protocol signaling for 3G wireless networks

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Embodiment Construction

[0019] Certain embodiments disclosed herein provide improved SIP signaling for 3G wireless networks by using compression in the VIA field to reduce signaling overhead in SIP messages. For example, one method disclosed herein allows compression of the VIA header by eliminating redundant address information found in each intermediate address along the path the message traverses. An alternative method allows compressing the VIA header by marking certain elements of the header and replacing the original string with the token in the VIA header.

[0020] After reading this specification, it will become apparent to those skilled in the art how to implement the invention in various alternative embodiments and alternative applications. However, while various embodiments of the invention have been described herein, it should be understood that these embodiments have been presented by way of example and limitation only. Accordingly, the detailed description of various alternative embodi...

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Abstract

Session initiation protocol ''SIP'' signaling for 3G wireless networks is provided by using compression in the VIA field to reduce the signaling overhead in SIP messages. Methods of compression include eliminating redundant address information found in each intermediate address along the path traveled by the message and tokenizing certain elements of the header and using the tokens in the VIA header in place of the raw strings. A network device receives (250) an SIP message and examines the VIA field in the header information of the SIP message to identify (260) the domain from which the SIP message was sent. If the domain is not the same (270) as the current domain, then the network device appends (280) the current domain in the VIA field and sends the message along its path to the destination node. If the domain is the same (270) as the current domain, then the network device compresses (290) the domain information and appends (300) the compressed domain information in the VIA field and sends the message along its path to the destination node.

Description

technical field [0001] The present invention relates generally to the field of wireless communications, and more particularly to improved SIP signaling for 3G wireless networks by using compression in VIA fields to reduce signaling overhead in SIP messages. Background technique [0002] The Session Initiation Protocol ("SIP") is an application-layer control protocol that can establish, modify, and terminate multimedia sessions (also called "conferences") or Internet telephony calls. SIP is defined in RFC2543. SIP can invite participants to single-point conferences and multipoint conferences, and does not require the initiator to be a member of the conference from which the invitation is being sent. Media and participants can be added to an existing session. Obviously, SIP supports name mapping and redirection services, while allowing ISDN and intelligent network telephony subscriber services. These conveniences also allow for personal mobility, which provides the ability ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06
CPCH04L65/1006H04L29/0604H04L29/0653H04L69/04H04L69/22H04L29/06197H04L29/06027H04L65/1104H04W80/10H04L65/1101
Inventor 阿图尔·苏里阿努帕姆·朱内贾亚什·夸里亚
Owner KYOCERA CORP
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