Motorola Corporation

David A Hensley

Michael N Kloos

Christopher L Johnson

Steven J Charnota

A system for reducing or eliminating cross talk resulting from co-channel interference in TDMA communication systems is disclosed. In general, the system may include one or more enhanced mobile stations sending, to an enhanced base station, base station identifying information in a training period that was previously used by mobile units to send pseudotrainiug information. The base station identifying information may include, but is not limited to, global cell site identification or any portion thereof or local cell site identification or any portion thereof. Upon receipt of information including the appropriate base station identifying information, die enhanced base station may perform enhanced synchronization and reception and correction functions.

Timing recovery and cross talk prevention in the presence of co-channel interference

A communication device (107) employs a method for determining signal quality of a communication channel (117) in a communication system (100). Upon receipt of a radio signal, a communication device (107), such as a portable radio, determines the signal quality of at least two portions (121, 124) of the communication channel (117) over which the radio signal was transmitted. The communication device (107) then determines which of the determined signal qualities is lowest and selects the lowest determined signal quality as the signal quality of the communication channel (117). The communication device (107) can then use the selected channel quality in the handoff decision-making process.

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Wheaton, IL, United States of America

David A Hensley