Setting a communication channel
First Claim
1. A method of setting up a communication channel for transferring call related control messages in a packet switched wireless communications network, comprising the steps of:
- generating, in a first network element, a request to setup a communication channel;
including in the request, in the first network element, a parameter indicating that said communication channel will be used for transferring call related control messages to or from said first network element;
sending, from said first network element to a second network element, said request to setup a communication channel, said request having said indication indicating that the communication channel will be used for transferring call related control messages to or from said first network element;
setting filtering information for said communication channel in response to said request to setup the communication channel; and
filtering the messages sent on said communication channel in response to said filtering information set in response to receiving said request to set up said communication channel.
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Accused Products
Abstract
In a packet switched wireless communications network, a parameter of a communication channel request indicates that the communication channel is to be used to transfer call related control messages. Upon receipt of the communication channel request, a network element sends a request to a radio access network that a part of the communication channel should be setup to transfer call related control messages. Another network element sets filtering information to allow only specific messages to be transferred on the communication channel. Specifically, the filtering information is set such that only call related control messages may be transferred on the communication channel. The other network element then sends the filtering information to the user equipment (UE). The UE derives the uplink filtering information from the received filtering information.
37 Citations
26 Claims
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1. A method of setting up a communication channel for transferring call related control messages in a packet switched wireless communications network, comprising the steps of:
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generating, in a first network element, a request to setup a communication channel; including in the request, in the first network element, a parameter indicating that said communication channel will be used for transferring call related control messages to or from said first network element; sending, from said first network element to a second network element, said request to setup a communication channel, said request having said indication indicating that the communication channel will be used for transferring call related control messages to or from said first network element; setting filtering information for said communication channel in response to said request to setup the communication channel; and
filtering the messages sent on said communication channel in response to said filtering information set in response to receiving said request to set up said communication channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A packet switched wireless communication network, comprising:
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a first network element generating a request to setup a communication chammel and including in said request a parameter indicating that the communication channel will be used for transferring call related control messages to or from said first network element; and a second network element, said second network element receiving from said first network element, said request to setup a communication channel having an indication indicating that the communication channel will be used for transferring call related control messages to or from said first network element, said first network element or said second network element setting filtering information for said communication channel in response to receiving said request to set up said communication channel; and at least one of said first network element and said second network element filtering messages transferred on said communication channel according to said filtering information set in response to receiving said parameter. - View Dependent Claims (21, 22, 23)
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24. A user equipment in a packet switched wireless communications network, said user equipment being adapted to:
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generate a request to setup a communication channel; include in the request, a parameter which indicates that said communication channel will be used for transferring call related control messages to or from said mobile station and that filtering information should be set in response to said request; and send, to another network element in said packet switched wireless communications network, said request to setup said communication channel, said request having the parameter indicating that the communication channel will be used for transferring call related control messages to or from said mobile station and that filtering information should be set in response to said request.
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25. A node in a packet switched wireless communications network, said node being adapted to:
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receive, from another network element in said packet switched wireless communications network, a request to setup a communication channel, said request including a parameter which indicates that said communication channel will be used for transferring call related control messages to or from said other network element and that filtering information should be set in response to said request; and send, to a radio access network, the parameter, which indicates that the communication channel will be used for transferring call related control messages and that filtering information should be set in response to said request.
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26. A node in a packet switched wireless communications network, said node being adapted to:
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receive, from another network element in said packet switched wireless communications network, a parameter from a request to setup a communication channel, said parameter indicating that the communication channel will be used for transferring call control messages; set filtering information for said communication channel in response to receiving the parameter from the request to set up a communication channel for call related control messages; monitor the data sent on said communication channel based on said filtering information; and block the data from transfer in said communication channel if the data is not call related control messages.
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Specification