Digital speech interpolation method and apparatus

Details Digital speech interpolation method and apparatus Digital speech interpolation method and apparatus

1995-10-30

1998-05-19

Chin, Wellington

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

370348, 370436, 370443, 370468, 370478, 370433, 455451, 455452, 455509, 455517, H04J 314, H04J 316

Patent

active

057545367

ABSTRACT:
The method and apparatus of the present invention uses DSI with a TDMA/FDMA communication protocol. For each speech frame detected by a speech detector (110), a communication unit (CU) (108) sends (440) a speech detected indicator (SDI) (208) to a switching facility (SF) (138). In response, the SF (138) allocates an uplink reuse unit (260) which identifies a carrier frequency (301-360) and timeslot (190-193) which the CU (108) should use to transmit a traffic burst containing a compressed speech frame. The SF (138) allocates (506) the uplink reuse unit (260) from a pool of available uplink reuse units and, if necessary, allocates a downlink reuse unit (262) from a pool of available downlink reuse units. A message (220) describing the reuse units (260, 262) is transmitted (508) to the CU (108) which then transmits (450) and receives (480) traffic bursts during the allocated reuse units (260, 262).

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An article by Campanella, "Digital Speech Interpolation" from COMSAT Technical Review, vo. 6, No. 1., Spring 1976.

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