Indication of coverage area limits within digital communication

Details Indication of coverage area limits within digital communication Indication of coverage area limits within digital communication

1994-08-19

1999-11-23

Beausoliel, Jr., Robert W.

Error detection/correction and fault detection/recovery

Pulse or data error handling

Error count or rate

455421, G06F 1100, H04Q 700, H04Q 900

Patent

active

059919019

ABSTRACT:
A digital radio frequency ("RF") communication unit (103, 104) measures digital signal quality based on received signal strength information ("RSSI") and/or bit error rate ("BER") information. The RSSI and/or BER information are compared with a predetermined threshold. If the predetermined threshold is exceeded, then simulated RF channel noise is injected into the speaker path during unvoiced periods in the message at a level which indicates the RF signal quality to warn the user of the digital communication unit that the outer limits of a given coverage area are being approached.

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