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6961545 |
Method and system for providing antenna diversity
An antenna switch diversity algorithm, and systems and methods to provide antenna diversity by implementing the algorithm in, for example, an IEEE 802.11a compliant environment, are presented. In a...
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6804529 |
Trunked radio repeater communication system including home channel aliasing and call grouping
A system for channel assignment in a trunked transmission communication system including a plurality of subscribers. A plurality of subscribers is provided home channel assignment to reduce collisi...
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6529486 |
Trunked radio repeater communication system
A trunked radio repeater communication system capable of use in a networked system includes a plurality of distributive switches and a unique signaling protocol and a switching protocol for interco...
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6381466 |
Wireless communication system with trunked signal voting
A trunked wireless communication system ( 200 ) includes communication sites ( 220, 230, 240, 250 ), communication signal voters ( 214, 215 ), and a signal switch ( 216 ) intercoupled between the c...
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6374115 |
Method and apparatus for trunked radio repeater communications with backwards compatibility
A trunked radio repeater communication system capable of use in a networked system includes a plurality of distributive switches and a unique signaling protocol and a switching protocol for interco...
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EP1041735A2 |
Diversity device and diversity antenna
The diversity device, in which transmitting and receiving carriers of at least two channels are possible, has a diversity antenna (21) having a first antenna (212a) which can be transmitted and rec...
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6079367 |
Animal training apparatus and method
An apparatus and method for training an animal and confining the animal to a defined area includes a magnetically actuated switch. The apparatus further includes a housing removably attached to the...
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6052601 |
Method and apparatus for using pace groups in a comparator
An apparatus has a plurality of ports (209); a router (203), operating in conjunction with at least one of the plurality of ports, arranged and constructed to receive at least one signal and provid...
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5815799 |
Priority system for a wide area transmission trunked communication system
A method and apparatus for providing priority access for users in a transmission trunked communication system, including a plurality of distributive radio network terminal (RNT) switches and a uniq...
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5613196 |
Method and apparatus for a distributive wide area network for a land mobile transmission trunked communication system
A land mobile transmission trunked communication system is provided with a unique switching protocol arrangement among repeaters that are networked to one or more external communication networks. T...
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5548802 |
Method and apparatus for a remote network switch for a land mobile transmission trunked communication system
A method and apparatus for distributively interconnecting a plurality of land mobile trunked transmission communication systems into a wide area network includes a plurality of distributive radio n...
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5542099 |
Simulcast group determination of best signal
Processing of dispatch calls in a simulcast multi-site communication system begins when a source communication unit transmits a message to one or more network receivers. The received signals are an...
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5465386 |
Signaling protocol for a distributive wide area transmission trunked communication system
A land mobile transmission trunked communication system is provided with an enhanced control signal protocol. The land mobile transmission trunked communication system includes a plurality of trans...
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5448758 |
Simulcast group determination of best signal by master site
Processing of dispatch calls in a simulcast multi-site communication system begins when a source communication unit transmits a message to one or more network receivers. The received signals are an...
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5295178 |
Digital signal processor for radio base station
A digital FM base station radio having a dedicated digital signal processing (DSP) board operates on audio signals from RF links and land lines. The DSP board detects, filters and generates tones a...
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5239697 |
Radio receiver with two receiving systems
A radio receiver with two receiving systems includes a CPU for selecting the appropriate ranges of local signal generators in the two receiving systems so that local signals generated by the local ...
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5168574 |
System and method for switching between antennas in a radio frequency booster
A diversity receiving apparatus includes first and second antennas and circuitry for selecting one antenna or the other. Control circuitry analyzes signal strength received from the selected antenn...
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5152002 |
System and method for extending cell site coverage
A system and a method for extending coverage of a cell site in a cellular radio telephone system include a plurality of repeaters or boosters which are spaced through the region where increased cov...
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5131010 |
Voice guard digital voter for multiple site PST RF trunking system
A Voice Guard digital voter system for a multi-site public service trunking (PST) digitally trunked RF communications system operates on the principle that it is highly likely that messages receive...
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5131007 |
Digital voter for multiple site PST R trunking system
A digital voter system for a multi-site public service trunking (PST) digitally trunked RF communications system operates on the principle that it is highly likely that messages received during a s...
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5123110 |
Channel assignment method for multi-site trunked radio system
A method for allocating communication resources within a communication system wherein communication resources are assigned only within critical sites and within non-critical sites containing critic...
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5113413 |
Voter arrangement for multiple site PST RF trunking system
A digital voter system for a multiple site digitally trunked RF communications system includes an improved voting arrangement which tests for actual redundancy before removing redundant messages--t...
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5097484 |
Diversity transmission and reception method and equipment
In an antenna-selection diversity transmission and reception equipment which is in digital communication with a transmission and reception equipment having a single antenna, and performs transmissi...
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5065449 |
Booster diversity receiving system usable with cellular booster
A diversity receiving apparatus includes first and second antennas and circuitry for selecting one antenna or the other. Control circuitry analyzes signal strength received from the selected antenn...
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5023942 |
Fault tolerant data transmission network
A data transmission system, in which a plurality of repeater nodes are interconnected by optical fiber or electrical transmission links, which has a predetermined bypass path split ratio and does n...
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4979231 |
Two-way radio for use in a communication system
A two-way radio includes a receiver having a squelch circuit and a selective calling decoder. A transmitter is connected to an inhibit circuit. The inhibit circuit is responsive to the selective ca...
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4941200 |
Booster
An apparatus and method for selecting a number of cellular radio channels to be boosted in a given geographical area provides either F1-F1 or F1-F2 operation. The signals are be boosted at the same...
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4862514 |
Hybrid electronic radio repeater
An improved hybrid electronic radio repeater comprising an antenna means for receiving a select, narrow frequency band of radio wave signals, the radio wave signal(s) being transmitted from discret...
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4633463 |
Radio communication system
A communication system, adapted particularly for use in military tactical situations, includes a plurality of central stations and at least one remote station assigned to each such central station....
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4611334 |
Message capturing radio data system
A radio data communications system is disclosed in which messages, normally lost to interference caused by independent remote units contending for the radio channel, may be salvaged. If a remote un...
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4513412 |
Time division adaptive retransmission technique for portable radio telephones
The present invention relates to a portable transceiver and a remote terminal station each using at least two antennas with different polarization transmission capabilities for an adaptive retransm...
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