Radio resources messaging in an unlicensed wireless communication system
View Patent ↗An unlicensed wireless service is adapted to generate the interface protocols of a licensed wireless service to provide transparent transition of communication sessions between a licensed wireless service and an unlicensed wireless service. In one embodiment, a mobile station includes level 1 , level 2 , and level 3 protocols for licensed wireless service and an unlicensed wireless service. An indoor base station and indoor network controller provide protocol conversion for the unlicensed wireless service into a standard base station controller interface of the licensed wireless service.
1. An unlicensed wireless network controller to operate in an unlicensed wireless communication system comprising a first radio access network, the unlicensed network controller comprising:
a) a first network interface comprising a broadband access network;
b) a second network interface via which messages are sent to and received from a mobile station via an access point communicatively coupled between the mobile station and the unlicensed network controller, the interface including a plurality of layers implemented over the broadband network interface;
c) a third network interface, for connecting the unlicensed network controller to a telecommunications network employed by a licensed wireless communication system comprising a mobile switching center (MSC);
d) circuits for receiving an assignment request from the MSC; and
e) circuits for generating, transmitting, and processing a set of unlicensed radio resource (RR) messages transmitted over the second interface to support assigning a voice bearer channel for the mobile station to access voice bearer services of the licensed wireless communication system via the unlicensed wireless communication system, wherein the set of unlicensed RR messages comprises:
an activate channel message sent from the unlicensed network controller and received by the mobile station, wherein the receipt of the activate channel message by the mobile station triggers establishment of the voice bearer channel for the mobile station.
2. The unlicensed network controller of claim 1 , wherein the set of unlicensed RR messages further comprises:
an activate channel acknowledgment message sent by the mobile station in response to receiving the activate channel message and received at the unlicensed network controller.
3. An unlicensed wireless network controller to operate in an unlicensed wireless communication system comprising a first radio access network, the unlicensed network controller comprising:
a) a first network interface comprising a broadband access network;
b) a second network interface via which messages are sent to and received from a mobile station via an access point communicatively coupled between the mobile station and the unlicensed network controller, the interface including a plurality of layers implemented over the broadband network interface;
c) a third network interface, for connecting the unlicensed network controller to a telecommunications network employed by a licensed wireless communication system; and
d) circuits for handling a set of unlicensed radio resource (RR) messages transmitted over the second interface to support paging of one or more mobile stations via the unlicensed wireless communications system;
wherein the unlicensed network controller receives a paging message from the licensed wireless communication system over the third interface that identifies the mobile station;
wherein the set of unlicensed RR messages includes an unlicensed RR PAGING REQUEST message sent from the unlicensed network controller to the identified mobile station.
4. The unlicensed network controller of claim 3 wherein the set of unlicensed RR messages further includes:
an unlicensed RR PAGING RESPONSE message sent by the mobile station to the unlicensed network controller, wherein the contents of the PAGING RESPONSE message is forwarded by the unlicensed network controller to the telecommunications network employed by the licensed wireless communication system.
5. The unlicensed network controller of claim 1 wherein said second network interface uses Voice over Internet Protocol (VoIP).