IP communication in a cellular telecommunications system
First Claim
1. A method of alerting a mobile wireless subscriber registered with a mobile wireless communication network to a session initiation request sent by a calling party, wherein a SIP server associated with said mobile wireless communication network receives a SIP Invite message containing a SIP URL identifying said mobile wireless subscriber wherein said SIP URL determines the identity of a second SIP server of a Access Control Point (ACP) serving said mobile wireless subscriber and further sends said SIP Invite message to said second SIP server, comprising the steps of:
- receiving a SIP Invite message at said second SIP server; and
causing a paging message to be broadcast to said mobile subscriber;
wherein an IP address, for use in providing the service to which the SIP Invite message relates, is allocated to the mobile wireless subscriber after receipt of the paging response message at said second SIP server.
1 Assignment
0 Petitions
Accused Products
Abstract
A method of alerting a mobile wireless subscriber (11) registered with a mobile wireless communication network (1) to a session initiation request sent by a calling party (7). The method comprises receiving a SIP Invite message at a Home SIP server (8) of the mobile network (1), the SIP Invite message containing a SIP URL identifying said mobile subscriber (11). Using the SIP URL, the identity of a ACP (3) with which the mobile subscriber (11) is currently registered is identified and a paging message broadcast to said mobile subscriber (11) from said ACP (3).
38 Citations
29 Claims
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1. A method of alerting a mobile wireless subscriber registered with a mobile wireless communication network to a session initiation request sent by a calling party, wherein a SIP server associated with said mobile wireless communication network receives a SIP Invite message containing a SIP URL identifying said mobile wireless subscriber wherein said SIP URL determines the identity of a second SIP server of a Access Control Point (ACP) serving said mobile wireless subscriber and further sends said SIP Invite message to said second SIP server, comprising the steps of:
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receiving a SIP Invite message at said second SIP server; and causing a paging message to be broadcast to said mobile subscriber; wherein an IP address, for use in providing the service to which the SIP Invite message relates, is allocated to the mobile wireless subscriber after receipt of the paging response message at said second SIP server. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of initiating an IP session between a calling party and a called mobile wireless subscriber registered with a mobile wireless communication network, the method comprising:
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receiving a SIP Invite message at a SIP server of the mobile network, the SIP Invite message containing a SIP URL identifying said mobile subscriber; identifying a mobile subscriber identity corresponding to a SIP URL contained in the SIP Invite message, said mobile subscriber identity identifying the called mobile subscriber within the mobile network; broadcasting a paging message to said mobile subscriber; and allocating to the mobile subscriber an IP address following receipt by the network of a paging response message sent by the mobile subscriber.
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19. A method of forwarding a call from a first subscriber of a communications network to a second mobile wireless subscriber of a mobile wireless communication network, the method comprising:
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receiving a SIP Invite message at a SIP server of said communication network, the SIP Invite message containing a SIP URL identifying said second mobile wireless subscriber; sending the SIP Invite message to a second SIP server of the mobile wireless communication network; identifying at the second SIP server of the mobile wireless communication network whether an association has been created between the first subscriber and second mobile wireless subscriber; determining the identity of a third SIP server of an Access Control Point (ACP) with which the second mobile wireless subscriber is currently registered; sending the SIP Invite message to said third SIP server; and broadcasting a paging message to said second mobile wireless subscriber. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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26. A system of alerting a mobile wireless subscriber registered with a mobile wireless communication network to a session initiation request sent by a calling party and wherein said mobile wireless subscriber is registered with a first SIP server wherein said first SIP server receives a SIP Invite message containing a SIP URL identifying said mobile wireless subscriber and wherein said that SIP server further determines the identity of a second SIP server of a Access Control Point (ACP) serving said mobile wireless subscriber and transmits said SIP Invite message to said second SIP server, further comprising:
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means for receiving said SIP Invite message at said second SIP server; means for causing a paging message to be broadcast to said mobile wireless subscriber; means for allocating an IP address to said mobile wireless subscriber for use in providing the services to which said SIP Invite massage relates after receipt of the paging response message. - View Dependent Claims (27, 28, 29)
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Specification