Medium access control layer for packetized wireless systems

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United States of America Patent

PATENT NO 6532225
SERIAL NO

09361572

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An arrangement where, in addition to the control channels that are used to set up sessions, there is a logically and physically separate and independent set of control channels that can be used as session control channels. Illustratively, the physical GSM frame arrangement that employs 8 logical slots is used, with one slot both in the uplink and downlink dedicated to these separate control channels. In the downlink, such a control channel provides channel grant information, requests to make and transmit power measurements, poll mobile units, etc. In the uplink, such a control channel can be used to request access to a traffic channel, to report on power measurements, to request special hand-off handling, to respond to polling, etc. Because the uplink session control channel does not need to carry a significant amount of information, the GSM slot can be divided into minislots, with each minislot constituting a session control channel for a group of mobile units.

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Patent Owner(s)

Patent OwnerAddress
AT&T CORP32 AVENUE OFTHE AMERICAS NEW YORK NY 10013-2412

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chang, Li Fung Holmdel, NJ 101 1569
Chawla, Kapil K Middletown, NJ 19 727
Chuang, Justin C Holmdel, NJ 18 1146
Qiu, Xiaoxin Bridgewater, NJ 56 1243
Sollenberger, Nelson R Tinton Falls, NJ 74 2067

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