System and method for providing rescue channel communications between base stations in a wireless communication system
First Claim
1. For use in a wireless communication system comprising at least two base stations and a mobile station, an apparatus for providing rescue channel communications between said at least two base stations in said wireless communication system, said apparatus comprising:
- a rescue base station that is capable of communicating with said mobile station that is capable of providing a rescue channel for said mobile station; and
a source base station that is capable of communicating with said mobile station and with said rescue base station and that is capable of sending messages to said rescue base station to establish a rescue channel from said source base station to said mobile station through said rescue base station,wherein said source base station is capable of sending an A7 handoff request message to said rescue base station to establish said rescue channel for said mobile station.
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Accused Products
Abstract
A system and method is disclosed for providing rescue channel communications between base stations in a wireless communication system. The invention comprises a source base station that is capable of sending messages to a rescue base station to cause the rescue base station to establish a rescue channel for a mobile station that has lost its traffic channel. The messages for establishing rescue channels communications between the base stations comprise Internetwork Operating System (IOS) messages that have been modified to add rescue channel indicator information. In an alternate advantageous embodiment of the invention, specially designed rescue channel activation messages and rescue channel activation acknowledgment messages are used to establish a rescue channel for the mobile station.
24 Citations
28 Claims
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1. For use in a wireless communication system comprising at least two base stations and a mobile station, an apparatus for providing rescue channel communications between said at least two base stations in said wireless communication system, said apparatus comprising:
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a rescue base station that is capable of communicating with said mobile station that is capable of providing a rescue channel for said mobile station; and a source base station that is capable of communicating with said mobile station and with said rescue base station and that is capable of sending messages to said rescue base station to establish a rescue channel from said source base station to said mobile station through said rescue base station, wherein said source base station is capable of sending an A7 handoff request message to said rescue base station to establish said rescue channel for said mobile station. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. For use in a wireless communication system comprising at least two base stations and a mobile station, a method for providing rescue channel communications between said at least two base stations in said wireless communication system, said method comprising the steps of:
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providing a rescue base station that is capable of communicating with said mobile station and that is capable of providing a rescue channel for said mobile station; and providing a source base station that is capable of communicating with said mobile station and with said rescue base station; and sending messages from said source base station to said rescue base station to establish a rescue channel from said source base station to said mobile station through said rescue base station, sending an A7 handoff request message from said source base station to said rescue base station to establish said rescue channel for said mobile station. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification