System and method for provision of IMS based services for legacy CS UE with home node B access
First Claim
1. A method for performing a handoff from a Home Node B (HNB) to a Base Station System (BSS), the method comprising:
- establishing a first communications session between a user equipment (UE) and a remote end, the first communications session having a first bearer path and a circuit switched signaling path, the circuit switched signaling path extending from the HNB to an Interworking Function (IWF) without passing through a Media Switching Center (MSC); and
handing over the first communications session to a second bearer path and a second signaling path, thereby handing off the UE from the HNB to the BSS, wherein the second signaling path extends from the BSS to the IWF via the MSC.
1 Assignment
0 Petitions
Accused Products
Abstract
A system and method for providing user equipment (UE) mobility between a packet-switched system and a circuit-switched system is provided. In an embodiment, handover from a circuit-switched connection via a 3G Home Node B (3G HNB) to a circuit-switched connection via a Base Station System (BSS) is provided. In another embodiment, handover from a packet-switched connection via the 3G HNB to a circuit-switched connection via a BSS is provided. In yet another embodiment, handover from a packet-switched connection via a Long Term Evolution (LTE) access point to a circuit-switched connection via a 3G HNB is provided. Once handover is completed, an Interworking Function (IWF) is provided that acts as a Session Initiation Protocol (SIP) for translating circuit-switched signaling messages to SIP messages for packet-switched signaling. The bearer path comprises a circuit-switched bearer path to a Media Gateway (MGW), which provides a packet-switched bearer path toward the remote end.
-
Citations
25 Claims
-
1. A method for performing a handoff from a Home Node B (HNB) to a Base Station System (BSS), the method comprising:
-
establishing a first communications session between a user equipment (UE) and a remote end, the first communications session having a first bearer path and a circuit switched signaling path, the circuit switched signaling path extending from the HNB to an Interworking Function (IWF) without passing through a Media Switching Center (MSC); and handing over the first communications session to a second bearer path and a second signaling path, thereby handing off the UE from the HNB to the BSS, wherein the second signaling path extends from the BSS to the IWF via the MSC. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A method for performing wireless communications, the method comprising:
-
establishing a first communications session between user equipment (UE) and a remote end extending through an Enhanced Node B (eNB), the first communications session having a first bearer path and a first signaling path, the first bearer path including a packet-switched communications path; and handing over the first communications session from the eNB to a home node B (HNB), wherein handing over the communications session comprises switching from the first bearer path to a second bearer path and from the first signaling path to a circuit switched signaling path, the second bearer path including a circuit-switched communications path, the second signaling path extending through a Home Node B (HNB) and an Interworking Function (IWF), but not through a media switching center (MSC). - View Dependent Claims (11, 12, 13, 14, 15, 16)
-
-
17. An interworking function (IWF) device comprising:
-
a processor; and a computer readable storage medium storing programming for execution by the processor, the programming including instructions to; establish a communication session with a home gateway, the communications session including a circuit-switched signaling connection extending from a user equipment to the IWF device through both the home gateway and a home base station, but not through a media access controller (MSC); and handoff the communication session from the home base station to a base station subsystem (BSS), wherein handing off the communications session includes switching from the circuit switched signaling connection to a second signaling connection extending through the BSS and the MSC. - View Dependent Claims (18, 19, 20)
-
-
21. An interworking function (IWF) device comprising:
-
a processor; and a computer readable storage medium storing programming for execution by the processor, the programming including instructions to; establish a communication session with a home gateway, the communications session being initially established over a circuit-switched signaling connection extending from a user equipment to the IWF device through both the home gateway and a home base station, but not through a media access controller (MSC); and transfer the communication session to an evolved node B (eNB) upon receiving a relocation required message, wherein the instructions to transfer the communications session includes instructions to switch from the circuit switched signaling connection to a packet switched signaling connection extending from the user to a Call Session Control Function (CSCF) via the eNB. - View Dependent Claims (22, 23, 24, 25)
-
Specification