MANAGING CALL CONTINUITY BETWEEN NETWORK DEVICES
The present disclosure includes a system and method for managing handovers between network devices. In some implementations, a method includes receiving a request to handover a call session from a femtocell to a macrocell associated with a cellular core network. The femtocell comprise cellular radio technology. A Session Initiation Protocol (SIP) message is generated based, at least in part, on the handover request. The SIP message is transmitted to a communication node associated with the cellular core network.
1 . A method for managing a handover, comprising:
receiving a request to handover a call session from a femtocell to a macrocell associated with a cellular core network, the femtocell comprising cellular radio technology;
generating a Session Initiation Protocol (SIP) message based, at least in part, on the handover request; and
transmitting the SIP message to a communication node associated with the cellular core network.
2 . The method of claim 1 , wherein the cellular radio technology comprises one of GSM, UMTS, WIMAX, WCDMA, EVDO, HSDPA, or CDMA.
3 . The method of claim 1 , wherein the SIP message comprises an INVITE, a NOTIFY, a MESSAGE, or an INFO message.
4 . The method of claim 1 , further comprising:
receiving a SIP response from the communication node indicating that cellular resources are provisioned for the handover; and
transmitting a cellular-radio-technology message to a cellular device indicating that the resources are provisioned for the handover.
5 . The method of claim 1 , the cellular radio technology comprises a first cellular radio technology, wherein the cellular core network comprises a different cellular radio technology.
6 . The method of claim 1 , wherein the communication node translates between SIP and the cellular radio technology.
7 . The method of claim 1 , wherein the communication node is configured to translate to a plurality of cellular radio technologies.
8 . The method of claim 1 , further comprising encapsulating at least a portion of the request in the SIP message.
9 . The method of claim 8 , wherein the at least a portion is encapsulated in a MIME extension.
10 . The method of claim 1 , further comprising:
transmitting a SIP SUBSCRIBE message to the communication node, the SUBSCRIBE message request subscription to handovers between the femtocell and the macrocell; and
receiving a SIP NOTIFY indicating parameters associated with the subscription to handovers.
11 . The method of claim 10 , further comprising:
receiving a SIP SUBSCRIBE message from the communication node, the SUBSCRIBE message request subscription to handovers between the femtocell and the macrocell; and
transmitting a SIP NOTIFY indicating parameters associated with the subscription to handovers.
12 . The method of claim 1 , wherein parameters associated with the handover are received in a SIP INFO or SIP MESSAGE message.
13 . A device for managing a handover, comprising:
a wireless receiver configured to receive a request to handover a call session from a femtocell to a macrocell associated with a cellular core network, the femtocell comprising cellular radio technology;
a conversion module configured to generate a Session Initiation Protocol (SIP) message based, at least in part, on the handover request; and
an IP transmitter configured to transmit the SIP message to a communication node associated with the cellular core network.
14 . The device of claim 13 , wherein the cellular radio technology comprises one of GSM, UMTS, WIMAX, WCDMA, EVDO, HSDPA, or CDMA.
15 . The device of claim 13 , wherein the SIP message comprises an INVITE, a NOTIFY, or an INFO message.
16 . The device of claim 13 , further comprising:
an IP receiver configured to receive a SIP response from the communication node indicating that cellular resources are provisioned for the handover; and
a wireless transmitter configured to transmit a cellular-radio-technology message to a cellular device indicating that the resources are provisioned for the handover.
17 . The device of claim 13 , the cellular radio technology comprises a first cellular radio technology, wherein the cellular core network comprises a different cellular radio technology.
18 . The device of claim 13 , wherein the communication node translates between SIP and the cellular radio technology.
19 . The device of claim 13 , wherein the communication node is configured to translate to a plurality of cellular radio technologies.
20 . The device of claim 13 , further comprising encapsulating at least a portion of the request in the SIP message.
21 . The device of claim 20 , wherein the at least a portion is encapsulated in a MIME extension.
22 . The device of claim 1 , further comprising:
the IP transmitter further configured to transmit a SIP SUBSCRIBE message to the communication node, the SUBSCRIBE message request subscription to handovers between the femtocell and the macrocell; and
the IP receiver further configured to receive a SIP NOTIFY indicating parameters associated with the subscription to handovers.
23 . The device of claim 22 , further comprising:
the IP receiver further configured to receive a SIP SUBSCRIBE message from the communication node, the SUBSCRIBE message request subscription to handovers between the femtocell and the macrocell; and
the IP transmitter further configured to transmit a SIP NOTIFY indicating parameters associated with the subscription to handovers.
24 . The device of claim 13 , wherein parameters associated with the handover are received in a SIP INFO or SIP MESSAGE message.