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US 2013/0094473 A1Published application
Sip - enabled framework for multi-domain roaming control plane in a wimax access network
AssigneeApple Inc.
InventorGuo Qiang Wang
Life of this patent
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AssigneeApple Inc.
InventorGuo Qiang Wang
Estimating the term…
Middleware is provided as a control plane for WiMAX control messaging. Each ASN in a WiMAX system is associated with a Session Initiation Protocol (SIP) server. A plurality of Functional Entities (FEs) are distributed across the ASNs, wherein each FE (or a group of FEs) associated with a SIP agent. Each FE is operable to control a function associated with a subscriber station (SS). The function controlled by a first FE is transferred to a second FE by employing the SIP agents to establish a SIP session between the first and second FEs. WiMAX control messages are then exchanged over the established session to transfer the SS function from the first FE to the second FE. The first and second FEs may be in the same ASN, or the first and second FEs may be in different ASNs.
1-45. (canceled)
A broadband network access system comprising:
The broadband network access system of claim 1, wherein the first and second SIP agents are each associated with an API, and wherein the SIP session employs the APIs in each of the SIP agents to establish the SIP session, and wherein exchange of at least one broadband network access system control message employs the APIs in each of the SIP agents to transfer at least one subscriber station function from the first FE to the second FE.
The broadband network access system of claim 1, wherein the subscriber station is a mobile subscriber station.
The broadband network access system of claim 1, wherein the first and second base stations are in the same access service network.
The broadband network access system of claim 1, wherein the first base station is in a first access service network and the second base station is in a second access service network, and wherein the first access service network and the second access service network are different.
The broadband network access system of claim 1, wherein the first and second FEs are radio resource controllers.
The broadband network access system of claim 1, wherein the first and second FEs are handover controllers.
The broadband network access system of claim 1, wherein the first and second FEs are paging controllers.
The broadband network access system of claim 1, wherein the first and second FEs are context exchange controllers.
The broadband network access system of claim 1, wherein the first and second FEs are security controllers.
The broadband network access system of claim 1, wherein the first and second FEs are service flow and data forwarding controllers.
The broadband network access system of claim 1, wherein the SIP session comprises a point-to-point SIP session between the first and second SIP agents, and wherein exchange of at least one broadband network access system control message over the established session to transfer at least one subscriber station function from the first FE to the second FE exchanges at least one control message over a session established in the same access service network.
The broadband network access system of claim 1, wherein the SIP session comprises a point-to-point SIP session between first and second SIP agents, and wherein exchange of at least one broadband network access system control message over the established session to transfer at least one subscriber station function from the first FE to the second FE exchanges at least one control message over a session in at least two access service networks.
The broadband network access system of claim 1, wherein the SIP session between first and second SIP agents comprises a multiparty SIP session between an access service network and a group of FEs including the second FE.
The broadband network access system of claim 14, wherein exchange of broadband network access system control messages over the established session to transfer the subscriber station function from the first FE to the second FE exchanges at least one control message over a session established between the first FE in a first access service network and exchanges at least one multicast control message over a multiparty SIP session between a second access service network and a group of FEs including the second FE.
A non-transitory computer readable medium having embodied therein a computer program for storing data, wherein the computer program is executable to:
A method, comprising:
The method of claim 17, wherein each SIP agent is associated with an API;
The method of claim 17, wherein the subscriber station function is associated with a mobile subscriber station.
The method of claim 17, wherein the first and second base stations are in different access service networks.
The method of claim 17, wherein exchanging at least one broadband network access system control message over the established session to transfer a subscriber station function from the first FE to the second FE comprises exchanging at least one control message over a session established between the first SIP agent and the second SIP agent in the same access service network.
The method of claim 17 wherein exchanging at least one broadband network access system control message over the established session to transfer a subscriber station function from the first FE to the second FE comprises exchanging at least one control message over a session established between the first SIP agent in a first access service network and the second SIP agent in a second access service network.
The method of 17, wherein the establishing the SIP session between a first SIP agent and a second SIP agent comprises establishing a multiparty SIP session between a group of SIP agent including the second SIP agent.
The method of claim 17, wherein exchanging at least one broadband network access system control message over the established session to transfer the function from the first FE to the second FE comprises exchanging at least one control message over a session established between the first FE in a first access service network and exchanges at least one multicast control message over a multiparty SIP session between a second access service network and a group of FEs including the second FE.
Dependencies are inferred from the claim text.