Granted Patent B2

US 8,432,870 · App. 12/499,621 · Granted Apr 30, 2013

Abstract

Claims (19)

1. A method comprising:

transmitting a handover request message from a legacy serving base station to a target updated base station, the request message including an indication that a mobile station is compliant with an updated standard specification of an orthogonal frequency division duplex multiple access (OFDMA) reference system, wherein the legacy serving base station is compliant with a legacy standard specification but not the updated standard specification, and the target updated base station is compliant with both the legacy standard specification and the updated standard specification; and

receiving a handover response message at the legacy serving base station from the target updated base station, the handover response message including one or more updated system parameters assigned to the mobile station for an updated time zone of the target updated base station and one or more legacy system parameters, wherein the one or more legacy system parameters are mapped to one or more corresponding updated system parameters by the mobile station or the target updated base station, wherein the time zone is an integer number of consecutive subframes.

2. The method of claim 1 and further comprising:

transmitting, from the legacy serving base station to the mobile station, a handover request message including one or more of the updated system parameters assigned to the mobile station for the updated time zone of the target updated base station.

3. The method of claim 1 wherein the transmitting comprises transmitting the handover request message from the legacy serving base station to the target updated base station, the request message including a medium access control layer (MAC) version value for the mobile station.

4. The method of claim 1 wherein the transmitting comprises transmitting the handover request message from a legacy serving base station to a target updated base station, the request message including mobile station capability information for the mobile station that includes a medium access control layer (MAC) version value for the mobile station and a mobile station device capability for the mobile station that identifies one or more device capabilities of the mobile station, the mobile station device capability indicating the mobile station's capability regarding one or more of hybrid automatic-repeat-request (HARQ) multi-carrier operation, and/or identification of one or more carrier frequency(ies) that the mobile station supports.

5. The method of claim 1 wherein the legacy serving base station comprises a base station that is compliant with a legacy IEEE 802.16 specification, wherein the target updated base station comprises a target base station that is compliant with an updated IEEE 802.16 specification and the mobile station being compliant with an updated specification comprises the mobile station being compliant with the updated IEEE 802.16 specification.

6. The method of claim 5 wherein the updated IEEE 802.16 specification comprises an IEEE 802.16m specification.

7. The method of claim 1 and further comprising sending, from the serving legacy base station to the mobile station, system information for updated time zones for one or more neighbor base stations.

8. The method of claim 1 wherein the receiving comprises receiving the handover response message at the legacy serving base station from the target updated base station, the handover response message including a container that provides one or more updated system parameters assigned to the mobile station for an updated time zone of the target updated base station, the updated system parameters including one or more of: an updated station ID, an updated ranging code, a ranging slot or ranging resources within the updated time zone, an updated action time, and/or an updated authentication parameter.

9. The method of claim 1 wherein the receiving comprises receiving the handover response message at the legacy serving base station from the target updated base station, the handover response message including a container that provides one or more 802.16m system parameters assigned to the mobile station for an 802.16m time zone of the target base station, the 802.16m system parameters including one or more of: an 802.16m station ID, an 802.16m ranging code, a dedicated ranging slot or ranging resources within an 802.16m time zone, an 802.16m action time, and/or an 802.16m authentication parameter.

10. An apparatus comprising a processor, the apparatus configured to:

transmit a handover request message from a legacy serving base station to a target updated base station, the request message including an indication that a mobile station is compliant with an updated standard specification of an orthogonal frequency division duplex multiple access (OFDMA) reference system, wherein the legacy serving base station is compliant with a legacy standard specification but not the updated standard specification, and the target updated base station is compliant with both the legacy standard specification and the updated standard specification; and

receive a handover response message at the legacy serving base station from the target updated base station, the handover response message including one or more updated system parameters assigned to the mobile station for an updated time zone of the target updated base station and one or more legacy system parameters, wherein the one or more legacy system parameters are mapped to one or more corresponding updated system parameters by the mobile station or the target updated base station, wherein the time zone is an integer number of consecutive subframes.

11. A method comprising:

receiving, at a target updated base station from a serving legacy base station, a handover request message including an indication that a mobile station for handover is compliant with an updated standard specification of an orthogonal frequency division duplex multiple access (OFDMA) reference system, wherein the legacy serving base station is compliant with a legacy standard specification but not the updated standard specification, and the target updated base station is compliant with both the legacy standard specification and the updated standard specification;

allocating one or more updated system parameters to the mobile station for an updated time zone of the target updated base station; and

transmitting a handover response message from the target updated base station to the serving legacy base station from the target updated base station, the handover response message including one or more updated system parameters assigned to the mobile station for an updated time zone of the target base station and one or more legacy system parameters, wherein the one or more legacy system parameters are mapped to one or more corresponding updated system parameters by the mobile station or the target updated base station, wherein the time zone is an integer number of consecutive subframes.

Assignments (6)