Uplink frame at the transcoder rate adaptation unit/base transceiver station interface in a cellular mobile radio network
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United States of America Patent
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-
Dec 2, 2008
Grant Date -
Apr 10, 2003
app pub date -
Jul 6, 1995
filing date -
Jul 11, 1994
priority date (Note) -
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status (Latency Note)
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Abstract
An uplink transmission frame transmitted from a base transceiver station to a transcoder rate adaptation unit in a cellular mobile radio network includes in the conventional way an information area in the form of at least one data field and at least one control field, the latter including a subfield representative of the validity of data transmitted in the at least one data field. This subfield is substantially at the start of the information area. This frame structure prevents transmission of invalid speech signals during a call from the cellular network to a fixed network such as the public switched telephone network at the time of handover affecting a mobile station involved in the call.
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