Telecommunication system and method of communicating protocol information

Abstract

The present invention applies to telecommunication networks, such as wireless mobile networks. In particular, the present invention deals with providing more efficient use of the resources of such mobile networks. The present invention provides in a wireless mobile telecommunications network, having a wireless mobile access interface, a message filter function adapted to remove, store and/or adapt header information from messages transferred to/from a wireless mobile device. The present invention is based on using the SIP signalling channel within the workings of a mobile network system more efficiently.

The claims defining the invention are as follows:  
     
         1 . In a wireless mobile telecommunications network, having a wireless mobile access interface, 
 a message filter function adapted to remove and/or store header information from messages transferred to/from a wireless mobile device.    
     
     
         2 . A message filter function as claimed in  claim 1 , wherein the removing and/or storing includes modifying the messages in accordance with predetermined criteria.  
     
     
         3 . A message filter function as claimed in  claim 1  or  2 , wherein the messages are SIP messages.  
     
     
         4 . A message filter function as claimed in  claim 1 ,  2  or  3 , wherein the filter is provided in the wireless mobile access interface; including the SIP proxy server.  
     
     
         5 . A telecommunications network, including the message filter function as claimed in  claim 1 ,  2 ,  3  or  4 .  
     
     
         6 . A method of communicating messages between a wireless mobile device and a message source/destination, 
 the method including the step of: 
 removing header information from messages destined to the mobile device, and adding header information to messages emanating from the mobile device.  
   
     
     
         7 . A method as claimed in  claim 6 , wherein the header information removed is substantially the same as the header information added.  
     
     
         8 . A method as claimed in  claim 6  or  7  wherein, the step includes modifying the messages in accordance with predetermined criteria.  
     
     
         9 . A method as claimed in  claim 8 , wherein the filtered header information relates to a session.  
     
     
         10 . A method, system or device as herein disclosed.