Method and system for transferring a communication session
First Claim
1. A method of transferring a communication session established between a content server and a mobile device in a first service area of a communication network comprising a plurality of service areas, each service area being associated with a transcoding proxy for transcoding content provided during a communication session established in said service area to and from a format suitable for the mobile device, the method comprising:
- transferring the relaying of the communication session from the first transcoding proxy associated with a first service area of said plurality of service areas to a second transcoding proxy associated with a second service area of said plurality of service areas;
receiving from the mobile device in the first service area a transfer request message;
determining a group comprising transcoding proxies associated with one or more service areas from said plurality, the one or more service areas being near to the first service area; and
forwarding the transfer request message to the transcoding proxies from the group, in response to which at least one of said transcoding proxies sends a transfer reply message to the mobile device.
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Accused Products
Abstract
The invention relates to a method of and a system for transferring a communication session from one service area (101) to another (102), where each service area is associated with a transcoding proxy (111, 112) for transcoding communication sessions established in said service area to and from a format suitable for a mobile device (104). A gateway server (103) relays the communication session from a content server (105, 106, 107) via the appropriate transcoding proxy to the mobile device (104). When the mobile device (104) moves to the second service area (102), the second transcoding proxy (112) is contacted and session handling is transferred thereto. The transfer operation is transparent to the content server, so the session between mobile device (104) and content server (105, 106, 107) stays intact. The invention also relates to a mobile assistant server, a transcoding proxy and a mobile device for use in said system.
45 Citations
13 Claims
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1. A method of transferring a communication session established between a content server and a mobile device in a first service area of a communication network comprising a plurality of service areas, each service area being associated with a transcoding proxy for transcoding content provided during a communication session established in said service area to and from a format suitable for the mobile device, the method comprising:
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transferring the relaying of the communication session from the first transcoding proxy associated with a first service area of said plurality of service areas to a second transcoding proxy associated with a second service area of said plurality of service areas; receiving from the mobile device in the first service area a transfer request message; determining a group comprising transcoding proxies associated with one or more service areas from said plurality, the one or more service areas being near to the first service area; and forwarding the transfer request message to the transcoding proxies from the group, in response to which at least one of said transcoding proxies sends a transfer reply message to the mobile device. - View Dependent Claims (2, 3, 4)
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5. A communication system arranged for transferring a communication session established between a content server and a mobile device in a first service area of a communication network comprising a plurality of service areas, each service area being associated with a transcoding proxy for transcoding content provided during a communication sessions established in said service area to and from a format suitable for the mobile device, the communication system further comprising:
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instructing means for transferring the relaying of the communication session from the first transcoding proxy associated with a first service area of the plurality of service areas to a second transcoding proxy associated with a second service area from said plurality of service areas; and migration initialization means for receiving from the mobile device in the first service area a transfer request message, determining a group having transcoding proxies associated with one or more service areas from said plurality, the one or more service areas being near to the first service area, and forwarding the transfer request message to the transcoding proxies from the group, in response to which at least one of said transcoding proxies sends a transfer reply message to the mobile device. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13)
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Specification