Transporting user data over A-Bis and A-interfaces within a mobi

Details Transporting user data over A-Bis and A-interfaces within a mobi Transporting user data over A-Bis and A-interfaces within a mobi

1996-11-14

1999-04-06

Pham, Chi H.

Pulse or digital communications

Synchronizers

375356, 375365, 370296, 370503, 370514, 455552, 455426, 455518, H04L 700, H04L 514, H04J 306, H04Q 701

Patent

active

058928022

ABSTRACT:
A synchronization frame is first formatted and transmitted in accordance with the Global System for Mobile (GSM) 08.60 specification. After an initial synchronization procedure is accomplished between a transcoder/rate adaptor unit (TRAU) and a particular base transceiver station (BTS) serving a mobile station, a modified GSM 08.60 frame is thereafter used to transport greater user data payload across the established communications link. The modified frame replaces the synchronization bits included in the GSM 08.60 formatted data frame with user data to increase data payload from the conventional 13.5 Kbit/s to a more desirable 14.4 Kbit/s without altering the standardized 16 Kbit/s transmission rate supported by the IWF and the BTS.

REFERENCES:
patent: 4450558 (1984-05-01), Hampton et al.
patent: 5375119 (1994-12-01), Koivu
patent: 5390216 (1995-02-01), Bilitza et al.
patent: 5506837 (1996-04-01), Sollner et al.
patent: 5612992 (1997-03-01), Dupuy et al.
patent: 5740166 (1998-04-01), Ekemark et al.

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