Telecommunications – Carrier wave repeater or relay system – Plural modulated carriers
Patent
1993-03-09
1994-03-08
Eisenzopf, Reinhard J.
Telecommunications
Carrier wave repeater or relay system
Plural modulated carriers
455 541, 455 69, 455 77, 455 89, 455127, 455343, H04B 140
Patent
active
052936392
ABSTRACT:
Power consumption in a portable communication unit (101) is reduced by first transmitting at a first time, a message (701) at a first transmit power level to a repeater (103) on a first communication channel. At a second time the message (701) is repeated (903) by the repeater on a second communication channel, thereby transmitting a delayed message (703). The portable communication unit (101) tunes (807) to the second communication channel after transmitting all of the message (701), so as to receive at least part of the delayed message (703). The repeater (103) establishes a receive quality metric (705) for the message (701) and transmits (909) the receive quality metric after all of the delayed message (703) is transmitted. The portable communication unit receives and stores (809) the receive quality metric (705), and determines a second transmit power level for transmitting another message using the receive quality metric.
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Branch Tony R.
Muri David L.
Wilson Alan L.
Eisenzopf Reinhard J.
Faile Andrew
Lukasik Susan L.
Motorola Inc.
Parmelee Steven G.
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