Abstract: A method of performing a ranging process between a base station and a mobile station in sleep mode in a wireless access system, wherein the base station provides the mobile station with an initial notification of a periodic ranging time that occurs during a sleep time interval and during which the mobile station is to perform the ranging process, the initial notification included in a first message, the first message indicating whether the mobile station should terminate sleep mode to receive downlink data, and wherein the base station provides the mobile station with subsequent notifications of periodic ranging times that occur during the sleep time interval, the subsequent notifications indicated in a second message, the second message transmitted to the mobile station as part of the ranging process such that the mobile station performs a plurality of ranging processes within the sleep time interval.

Abstract: A method of performing a ranging process between a base station and a mobile station in sleep mode in a wireless access system, wherein the base station provides the mobile station with an initial notification of a periodic ranging time that occurs during a sleep time interval and during which the mobile station is to perform the ranging process, the initial notification included in a first message, the first message indicating whether the mobile station should terminate sleep mode to receive downlink data, and wherein the base station provides the mobile station with subsequent notifications of periodic ranging times that occur during the sleep time interval, the subsequent notifications indicated in a second message, the second message transmitted to the mobile station as part of the ranging process such that the mobile station performs a plurality of ranging processes within the sleep time interval.

Abstract: A method of performing a ranging process between a base station and a mobile station in sleep mode in a wireless access system, wherein the base station provides the mobile station with an initial notification of a periodic ranging time that occurs during a sleep time interval and during which the mobile station is to perform the ranging process, the initial notification included in a first message, the first message indicating whether the mobile station should terminate sleep mode to receive downlink data, and wherein the base station provides the mobile station with subsequent notifications of periodic ranging times that occur during the sleep time interval, the subsequent notifications indicated in a second message, the second message transmitted to the mobile station as part of the ranging process such that the mobile station performs a plurality of ranging processes within the sleep time interval.

Abstract: A method of entering sleep mode in a mobile subscriber station in performing handover from a first base station (BS) to a second BS is disclosed. More specifically, the method includes entering sleep mode in the first base station and transmitting from the first base station sleep mode information in the first base station during handover, while receiving from a second base station sleep mode entry information in the second base station. The method further includes entering sleep mode based on the information the sleep mode entry information received from the second base station.

Abstract: A method of controlling network re-entry of a mobile station which is an idle mode by a paging controller in a wireless communication system comprising transmitting a paging announcement to a first base station to instruct the mobile station to perform network re-entry, wherein the first base station is a serving base station at which the mobile station entered the idle mode, the first base station transmitting a paging advertisement message to the mobile station, wherein the paging advertisement message comprises a paging command action code associated with performing ranging while the mobile station is in the idle mode, and wherein the paging command action code is determined in accordance with the paging announcement action code.

Abstract: A method of controlling idle mode comprises requesting to enter idle mode by a mobile subscriber station by transmitting an idle mode request to a serving base station having a serving paging group identifier with which the serving base station is associated. The method also comprises entering the idle mode by receiving an idle mode grant command from the serving base station. The method also comprises initiating a ranging request between the mobile subscriber station and the target base station associated with the target paging group, wherein the ranging request comprises the serving base station identifier and the serving paging group identifier. The method also comprises connecting with the target base station, wherein the serving base station is informed, by using the serving base station identifier, that the mobile subscriber station is not in the idle mode with the serving base station.

Abstract: A method of performing a ranging process between a base station and a mobile station in sleep mode in a wireless access system, wherein the base station provides the mobile station with an initial notification of a periodic ranging time that occurs during a sleep time interval and during which the mobile station is to perform the ranging process, the initial notification included in a first message, the first message indicating whether the mobile station should terminate sleep mode to receive downlink data, and wherein the base station provides the mobile station with subsequent notifications of periodic ranging times that occur during the sleep time interval, the subsequent notifications indicated in a second message, the second message transmitted to the mobile station as part of the ranging process such that the mobile station performs a plurality of ranging processes within the sleep time interval.

Abstract: A method of controlling network re-entry of a mobile station which is an idle mode by a paging controller in a wireless communication system comprising transmitting a paging announcement to a first base station to instruct the mobile station to perform network re-entry, wherein the first base station is a serving base station at which the mobile station entered the idle mode, the first base station transmitting a paging advertisement message to the mobile station, wherein the paging advertisement message comprises a paging command action code associated with performing ranging while the mobile station is in the idle mode, and wherein the paging command action code is determined in accordance with the paging announcement action code.

Abstract: A method of performing a ranging process between a base station and a mobile station in sleep mode in a wireless access system, wherein the base station provides the mobile station with an initial notification of a periodic ranging time that occurs during a sleep time interval and during which the mobile station is to perform the ranging process, the initial notification included in a first message, the first message indicating whether the mobile station should terminate sleep mode to receive downlink data, and wherein the base station provides the mobile station with subsequent notifications of periodic ranging times that occur during the sleep time interval, the subsequent notifications indicated in a second message, the second message transmitted to the mobile station as part of the ranging process such that the mobile station performs a plurality of ranging processes within the sleep time interval.

Abstract: A method of performing a ranging process between a base station and a mobile station in sleep mode in a wireless access system, wherein the base station provides the mobile station with an initial notification of a periodic ranging time that occurs during a sleep time interval and during which the mobile station is to perform the ranging process, the initial notification included in a first message, the first message indicating whether the mobile station should terminate sleep mode to receive downlink data, and wherein the base station provides the mobile station with subsequent notifications of periodic ranging times that occur during the sleep time interval, the subsequent notifications indicated in a second message, the second message transmitted to the mobile station as part of the ranging process such that the mobile station performs a plurality of ranging processes within the sleep time interval.

Abstract: A method of performing a ranging process between a base station and a mobile station in sleep mode in a wireless access system, wherein the base station provides the mobile station with an initial notification of a periodic ranging time that occurs during a sleep time interval and during which the mobile station is to perform the ranging process, the initial notification included in a first message, the first message indicating whether the mobile station should terminate sleep mode to receive downlink data, and wherein the base station provides the mobile station with subsequent notifications of periodic ranging times that occur during the sleep time interval, the subsequent notifications indicated in a second message, the second message transmitted to the mobile station as part of the ranging process such that the mobile station performs a plurality of ranging processes within the sleep time interval.

Abstract: A method of performing a ranging process between a base station and a mobile station in sleep mode in a wireless access system, wherein the base station provides the mobile station with an initial notification of a periodic ranging time that occurs during a sleep time interval and during which the mobile station is to perform the ranging process, the initial notification included in a first message, the first message indicating whether the mobile station should terminate sleep mode to receive downlink data, and wherein the base station provides the mobile station with subsequent notifications of periodic ranging times that occur during the sleep time interval, the subsequent notifications indicated in a second message, the second message transmitted to the mobile station as part of the ranging process such that the mobile station performs a plurality of ranging processes within the sleep time interval.

Abstract: A method of supporting a mobile station that is in an idle mode in a wireless communication system using a paging controller comprises entering an idle mode by a mobile station, receiving a paging command from a base station in the same paging group, the paging command comprising a paging command action code associated with performing ranging while the mobile station is in the idle mode to verify availability of the mobile station with respect to at least one of the base stations in the paging group, wherein the paging command is generated from the base station in response to a paging announcement from the paging controller, and exiting the idle mode and establishing communication with one of the plurality of base stations, wherein the plurality of base stations in the same paging group receive an idle mode exist status from the paging controller.

Abstract: A method of checking status of a mobile station in sleep mode is provided. The method includes receiving a SLP-REQ message from the mobile station; transmitting a SLP-RSP message in response to the SLP-REQ message, the SLP-RSP message including a first periodic ranging time frame offset indicating when the mobile station transmits a ranging request message; receiving the ranging request message which the mobile station transmits during a time period indicated by the first periodic ranging frame offset; and transmitting a ranging response message in response to the ranging request message, the ranging response message including information required for performing a ranging process, wherein the ranging response message further includes a second periodic ranging time frame offset if the mobile station transmits the ranging request message additionally.

Abstract: A method of performing a ranging process between a base station and a mobile station in sleep mode in a wireless access system, wherein the base station provides the mobile station with an initial notification of a periodic ranging time that occurs during a sleep time interval and during which the mobile station is to perform the ranging process, the initial notification included in a first message, the first message indicating whether the mobile station should terminate sleep mode to receive downlink data, and wherein the base station provides the mobile station with subsequent notifications of periodic ranging times that occur during the sleep time interval, the subsequent notifications indicated in a second message, the second message transmitted to the mobile station as part of the ranging process such that the mobile station performs a plurality of ranging processes within the sleep time interval.

Abstract: A method of performing a ranging process between a base station and a mobile station in sleep mode in a wireless access system, wherein the base station provides the mobile station with an initial notification of a periodic ranging time that occurs during a sleep time interval and during which the mobile station is to perform the ranging process, the initial notification included in a first message indicating whether the mobile station should terminate sleep mode to receive downlink data, and wherein the base station provides the mobile station with subsequent notifications of periodic ranging times that occur during the sleep time interval, the subsequent notifications indicated in a second message, the second message transmitted to the mobile station as part of the ranging process such that the mobile station performs a plurality of ranging processes within the sleep time interval.

Abstract: A method of performing a ranging process between a base station and a mobile station in sleep mode in a wireless access system, wherein the base station provides the mobile station with an initial notification of a periodic ranging time that occurs during a sleep time interval and during which the mobile station is to perform the ranging process, the initial notification included in a first message indicating whether the mobile station should terminate sleep mode to receive downlink data, and wherein the base station provides the mobile station with subsequent notifications of periodic ranging times that occur during the sleep time interval, the subsequent notifications indicated in a second message, the second message transmitted to the mobile station as part of the ranging process such that the mobile station performs a plurality of ranging processes within the sleep time interval.

Abstract: A method of controlling idle mode comprises requesting to enter idle mode by a mobile subscriber station by transmitting an idle mode request to a serving base station having a serving paging group identifier with which the serving base station is associated. The method also comprises entering the idle mode by receiving an idle mode grant command from the serving base station. The method also comprises initiating a ranging request between the mobile subscriber station and the target base station associated with the target paging group, wherein the ranging request comprises the serving base station identifier and the serving paging group identifier. The method also comprises connecting with the target base station, wherein the serving base station is informed, by using the serving base station identifier, that the mobile subscriber station is not in the idle mode with the serving base station.