Verifying availability of idle-mode mobile subscriber station in wireless access system
View Patent ↗A method of verifying availability of a mobile subscriber station that is in an idle-mode includes requesting to a base station by the mobile subscriber station to enter an idle-mode, wherein the base station is associated with a paging group comprising a plurality of base stations, and receiving from the base station an idle-mode response command to enter the idle-mode. The method also includes receiving from the base station a paging command comprising an action code associated with performing ranging while the mobile subscriber station is in the idle-mode to verify availability of the mobile subscriber station with respect to the base station, wherein if the ranging is not successfully performed with the base station during a predetermined period, the base station continues to transmit the paging command until a paging retrial count reaches a predetermined threshold.
1. A method for power-down of a mobile subscriber station that is in an idle-mode, the method comprising:
transmitting a first request message to a network to enter the idle-mode;
receiving a first response message from the network, the first response message including paging information that includes information related to at least paging grouping identification, paging cycle, or paging offset;
entering the idle-mode and receiving a paging message during paging intervals from the network;
transmitting a ranging request message to the network when attempting to power down, the ranging request message including information indicating power down; and
receiving a ranging response message from the network, the ranging response message including information indicating whether a power down location update has been successfully executed,
wherein idle-mode paging control is discontinued and idle-mode retaining information is released when the power down location update is successfully executed, and
wherein an availability of the mobile subscriber station is checked by the network using location update polling if the power down location update fails, and, if the mobile subscriber station does not answer to a location update poll from the network up to a paging retry count, an unavailability of the mobile subscriber station is determined, and the idle-mode retaining information is deleted.
2. The method of claim 1 , wherein the first request message includes preferred session information of the mobile subscriber station to expedite future network re-entry to the network.
3. The method of claim 2 , wherein the preferred session information includes at least verification information, Internet protocol address information, or information associated with network service.
4. The method of claim 1 , wherein the first response message includes service and operational information for expediting a future network re-entry from the idle-mode.
5. The method of claim 1 , wherein the paging message includes information that indicates whether to terminate the idle-mode.