System and method for performing ranging process in a...

Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...

Reexamination Certificate

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C370S310000, C370S311000, C455S435100, C455S436000

Reexamination Certificate

active

07620020

ABSTRACT:
Provided is a system and method for performing a ranging process in a communication system. If a Subscriber Station (SS) detects the insufficiency of UpLink (UL) resources for transmission of a Ranging Request (RNG_REQ) message during the ranging process, it transmits a UL resource allocation request message requesting additional allocation of the UL resources to a Base Station (BS) for additional transmission of the RNG_REQ message to cause the BS to additionally allocate the UL resources for the additional transmission of the RNG_REQ message.

REFERENCES:
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patent: 2005/0281212 (2005-12-01), Jeong et al.
patent: 2006/0121898 (2006-06-01), Kim et al.
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patent: 2007/0274265 (2007-11-01), Yoon et al.
patent: 2008/0123576 (2008-05-01), Son et al.
patent: WO 2005/040960 (2005-05-01), None
Hang Zhang et al., Enhanced Initial Ranging and BW Request Ranging; IEEE 802.16 Broadband Wireless Access Working Group, Aug. 28, 2004.
Carl Eklund et al., IEEE Standard 802.16: A Technical Overview of the WirelessMAN™ Air Interface for Broadband Wireless Access, IEEE Communications Magazine, Jun. 2002, pp. 98-107.
Chulsik Yoon et al., Changes on CDMA-Based BW Request Procedures in OFDMA-PHY for Mobile Environment, Oct. 31, 2003.
IEEE Std 802.16-2004, IEEE Standard for Local and Metropolitan Area Networks; Part 16: Air Interface for Fixed Broadband Wireless Access Systems, 2004.

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