Dual mode satellite/cellular terminal
First Claim
1. A communications system for relaying digitally coded voice signals to each of a plurality of remote stations, comprising:
- voice coding means for digitizing and coding voice signals to produce frames of digital data containing a fixed number of bits representing a segment of the voice signal over a time period and producing an associated voice/no voice flag;
error correction coding means for coding each of said voice frames to produce a first coded symbol block and a second coded symbol block each representing a respective one of said speech frames;
TDMA burst transmission means for relaying said first coded symbol blocks to respectively intended remote stations using an allocated timeslot in a repetitive TDMA frame period; and
control means for controlling said burst transmission means to replace a first coded symbol block when said associated flag indicates the no-voice condition by a second coded symbol block intended for a different remote station.
4 Assignments
0 Petitions
Accused Products
Abstract
A method and apparatus of communicating information using Time Division Multiple Access and adaptive transmission and reception are disclosed. Signal bursts are transmitted from TDMA transmitters to a TDMA receiver wherein the transmitter codes the information and transmits coded information to the receiver using at least one of two timeslots of a plurality of timeslots in a repetitive TDMA frame period. Both of the two timeslots are received whether or not the transmitter has transmitted using one or two timeslots and the received signals are classified as intended and non-intended. Successively received signals classified as intended are then assembled into a block for decoding to reproduce the information.
51 Citations
4 Claims
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1. A communications system for relaying digitally coded voice signals to each of a plurality of remote stations, comprising:
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voice coding means for digitizing and coding voice signals to produce frames of digital data containing a fixed number of bits representing a segment of the voice signal over a time period and producing an associated voice/no voice flag; error correction coding means for coding each of said voice frames to produce a first coded symbol block and a second coded symbol block each representing a respective one of said speech frames; TDMA burst transmission means for relaying said first coded symbol blocks to respectively intended remote stations using an allocated timeslot in a repetitive TDMA frame period; and control means for controlling said burst transmission means to replace a first coded symbol block when said associated flag indicates the no-voice condition by a second coded symbol block intended for a different remote station. - View Dependent Claims (2, 3, 4)
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Specification