Method of changing a zone in a broadband wireless access system
First Claim
1. A method of performing a zone switch by an advanced mobile station (AMS) configured to operate with an advanced base station (ABS) in a broadband wireless access system, the method comprising:
- receiving, by the AMS from the ABS via a legacy zone (LZone) of the ABS, a ranging response message containing zone switch information;
acquiring, by the AMS, MZone system information for an AMS supporting zone (MZone) of the ABS; and
performing, by the AMS, network reentry to the MZone of the ABS by performing downlink synchronization with the MZone of the ABS using the zone switch information,wherein, if the zone switch information includes a parameter of a MZone superframe header (SFH), the AMS acquires the MZone system information from the zone switch information before performing the downlink synchronization with the MZone of the ABS,wherein the zone switch information comprises information indicating a zone switch mode of the AMS,wherein, if the zone switch mode of the AMS is set to mode 0, the AMS breaks data communication with the LZone before performing the network reentry to the MZone, andwherein, if the zone switch mode of the AMS is set to mode 1, the AMS maintains the data communication with the LZone while performing the network reentry to the MZone.
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Abstract
The present invention relates to a broadband wireless access system, and more particularly, to a method of performing a zone change more promptly in a base station where an advanced terminal operates in a mix mode. A method for an advanced terminal (AMS) to perform a zone change in an advanced base station (mix mode ABS), which operates in a mix mode of a broadband wireless access system according to an embodiment of the present invention includes: receiving a ranging response message (RNG-RSP) including system information on an advanced terminal supporting zone (MZone) from a legacy zone (LZone) of the advanced base station; and performing ranging in the advanced terminal supporting zone by using the system information.
11 Citations
18 Claims
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1. A method of performing a zone switch by an advanced mobile station (AMS) configured to operate with an advanced base station (ABS) in a broadband wireless access system, the method comprising:
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receiving, by the AMS from the ABS via a legacy zone (LZone) of the ABS, a ranging response message containing zone switch information; acquiring, by the AMS, MZone system information for an AMS supporting zone (MZone) of the ABS; and performing, by the AMS, network reentry to the MZone of the ABS by performing downlink synchronization with the MZone of the ABS using the zone switch information, wherein, if the zone switch information includes a parameter of a MZone superframe header (SFH), the AMS acquires the MZone system information from the zone switch information before performing the downlink synchronization with the MZone of the ABS, wherein the zone switch information comprises information indicating a zone switch mode of the AMS, wherein, if the zone switch mode of the AMS is set to mode 0, the AMS breaks data communication with the LZone before performing the network reentry to the MZone, and wherein, if the zone switch mode of the AMS is set to mode 1, the AMS maintains the data communication with the LZone while performing the network reentry to the MZone. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of supporting a zone switch of an advanced mobile station (AMS) by an advanced base station (ABS) in a broadband wireless access system, the method comprising:
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receiving, by the ABS from the AMS via a legacy zone (LZone) of the ABS, a ranging request message containing zone switch capability information indicating a zone switch mode capable of being performed by the AMS; and sending, by the ABS to the AMS via the LZone of the ABS, a ranging response message, the ranging response message containing zone switch information, wherein the AMS acquires, from the ABS, MZone system information for an AMS supporting zone (MZone) of the ABS and performs network reentry to the MZone of the ABS by performing downlink synchronization with the MZone of the ABS using the zone switch information, and wherein, if the zone switch information includes a parameter of a MZone superframe header (SFH), the AMS acquires the MZone system information from the zone switch information before performing the downlink synchronization with the MZone of the ABS, wherein the zone switch information comprises information indicating a zone switch mode of the AMS, wherein, if the zone switch mode of the AMS is set to mode 0, the AMS breaks data communication with the LZone before performing the network reentry to the MZone, and wherein, if the zone switch mode of the AMS is set to mode 1, the AMS maintains the data communication with the LZone while performing the network reentry to the MZone. - View Dependent Claims (10, 11, 12, 13)
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14. An advanced mobile station (AMS) device configured to perform a zone switch with an advanced base station (ABS) in a broadband wireless access system, comprising:
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a processor configured to receive, from the ABS via a legacy zone (LZone) of the ABS, a ranging response message containing zone switch information; acquire MZone system information for an AMS supporting zone (MZone) of the ABS; and perform network reentry to the MZone of the ABS by performing downlink synchronization with the MZone of the ABS using the zone switch information, wherein, if the zone switch information includes a parameter of a MZone super frame header (SFH), the processor acquires the MZone system information from the zone switch information before performing the downlink synchronization with the MZone of the ABS, wherein the zone switch information comprises information indicating a zone switch mode of the AMS, wherein, if the zone switch mode of the AMS is set to mode 0, the AMS breaks data communication with the LZone before performing the network reentry to the MZone, and wherein, if the zone switch mode of the AMS is set to mode 1, the AMS maintains the data communication with the LZone while performing the network reentry to the MZone. - View Dependent Claims (15, 16, 17, 18)
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Specification