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5781856 |
Concentrated subscriber system for wireless local loop
A cellular telephone concentrated subscriber system is described. The concentrated subscriber system includes a set of subscriber units coupled to a concentrated subscriber system controller. The...
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5781855 |
Method and apparatus for identifying call records for a call in a cellular communication network
A method and apparatus for identifying call records in such a manner as to make it possible for a post processing system to produce one bill based upon information stored in all of the produced...
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5781854 |
Multiple wireless switching units embedded in a switching system
Embedding one or a plurality of wireless switches into a switching system. The wireless switches are both physically and logically integrated into the switching system. The switching system...
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5781540 |
Device and method for communicating in a mobile satellite system
The present invention relates to a device and a method for communicating in a mobile communication system. The method provides a carrier signal having a plurality of frames. Each frame has a...
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5771468 |
Multi-purpose base station
The invention provides a modular base station for use in a plurality of telecommunications systems where the systems operate according to different standards. The base station comprises a chassis...
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5765106 |
Authorized cellular telephone communication access and verification control system
This invention relates to a cellular telecommunications systems that utilizes encryption and employs encrypted seed number signals to make it more difficult to make unauthorized cellular telephone...
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5764730 |
Radiotelephone having a plurality of subscriber identities and method for operating the same
A radiotelephone (303) comprises a plurality of subscriber identities (306-308) operative in a radiotelephone system (300) at the same time. The radiotelephone network (301) processes incoming and...
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5758286 |
Method for accomplishing a mobile telecommunications connection using abbreviated dialing
A method for placing a call from a first mobile station to a second mobile station using predetermined abbreviated dialing. An A-subscriber dials a short number at the first mobile station which is...
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5758256 |
Method of transporting speech information in a wireless cellular system
A method of transporting speech information over a wireless cellular communications system is provided. By determining the existence and compatibility of the destination port with the origination...
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5745492 |
Speech information freeze-out control method and equipment in mobile satellite communication system
A speech freeze-out method in a communication system for transmitting speech information, which is sent from public telephone terminals (1) to a control center (5) through voice channels, from the...
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5740531 |
Digital mobile telephone communication method, communication channel switching method, and mobile station and base station for implementing same methods
Data signals such as a pseudo noise pattern and character data are transmitted along with voice signals over one voice signal channel, thereby allowing an accurate measurement of communication...
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5740530 |
Rapid received signal strength indication
There is provided a method of rapid Received Signal Strength Indication (RSSI) of a time-dispersed signal having echoes (where the time dispersal represents a significant fraction or more of the...
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5737695 |
Method and apparatus for controlling the use of discontinuous transmission in a cellular telephone
A method and apparatus for controlling the use of discontinuous transmission in a cellular telephone. The preferred embodiment of the present invention includes a voice activity detector for...
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5734707 |
Telephone system
A telephone system includes a plurality of telephones which do not require the use of a telephone company central switching station and which do not require the use of any other central control...
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5734639 |
Wireless direct sequence spread spectrum digital cellular telephone system
An exceptionally efficient operation is achieved through the use of orthogonal code divisional multiple access radio communication between a base station and a plurality of user handsets. Each user...
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5732356 |
Method and an arrangement for sound reconstruction during erasures
Digital audio or sound information such a speech is typically transmitted in bursts or packets containing a plurality of digitized sound samples. For the reconstruction of such a digital data...
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5719936 |
Communication device for mobile operation having a telephone and notebook with display
A communication device for mobile operation is equipped with a telephone as well as with a notebook with a display. Prior art devices have a housing in "pocket format" and a practically...
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5715311 |
Communication terminal apparatus
A communication terminal apparatus having a speech input module arranged movable from a position adjacent to a main shell to a position distanced from the main shell for calling. The communication...
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5694454 |
Apparatus for message re-transmission on demand
A communication system (100) providing analog message re-transmission on demand comprises a base station (114) and at least one portable communication transceiver (118). The base station (114)...
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5682600 |
Method for starting a short message transmission
A method for starting a short message transmission in a cellular radio network, a corresponding cellular radio network, and a subscriber register for a cellular radio network. The subscriber...
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5666398 |
Switching equipment and method for radiotelephone system of the local or private branch exchange type
A radio telephone system is disclosed to satisfy in the short term basic telecommunication needs of areas which are insufficiently or not yet covered. The system has a number of duplex radio...
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5642400 |
Communication apparatus used for communicating in accordance with a multi-channel access method
A communication apparatus to which communication units for communicating in accordance with a multichannel access method are connected comprises a receiver to receive ID information of a...
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5608725 |
Method and apparatus of a communications system having a DMT infrastructure
A communication system (100) includes a primary site (102) coupled to a plurality of secondary sites (104-108) using DMT technology. The primary site (102) includes a controller, a data...
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5553126 |
Secure anti-jamming wireless party line
A secure wireless party line system that can be used by a group of mobile users to communicate with each other like a wired party line but without the cumbersome inconvenience of long wired tether....
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5539529 |
Facsimile communication with selective call receivers
A selective call receiver (40) includes a receiver (66) for receiving information represented as a bitmap image. The selective call receiver 40 further includes a segmenter (206), coupled to the...
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5528665 |
Telephone exchange apparatus for both mobile and stationary stations, in which all communication channel pairs are assignable for all stations
A telephone exchange apparatus for both mobile and stationary subscribers in which the stationary subscribers are not assigned permanent channel pairs but rather are treated as the mobile...
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5528593 |
Method and apparatus for controlling power in a variable rate communication system
A method and apparatus for controlling transmission power in a variable rate communication system is disclosed. The method disclosed provides for a closed loop power control method. A first remote...
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5517492 |
Increased speech interleave with reduced delay
In a TDM readiotelephone network, there is provided a mechanism for introducing link asymmetry between an uplink and a downlink, paired frame alternation on the uplink and downlink and bandwidth...
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5515397 |
PCM subcode communications technique between a regional radio transmitter/receiver and a regional switching center
In a radiotelephone network, processing steps previously applied to digital voice transmissions received by a regional radio transmitter/receiver but not applied to analog voice transmissions...
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5513247 |
Method and apparatus for facilitating the making of wireless telephone calls
The lack of uniformity for accessing wireless carriers to reach roaming wireless telephones prevents nationwide wireless telephone service from being provided in a seamless manner by an automated...
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5513242 |
Method and apparatus for facilitating the ultimate making of wireless data transfers
Unnecessary expenses associated with exchanging data with wireless data stations that have become unavailable are avoided, in accordance with the principles of the invention, by a) transmitting the...
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5493693 |
Mobile radio communication system utilizing mode designation
A mobile radio communication system is provided with a base station apparatus connected to a wire circuit, a mobile radio station apparatus which is connected to the base station apparatus by means...
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5479400 |
Transceiver sharing between access and backhaul in a wireless digital communication system
A microcellular digital packet communication system is provided for digital communication having a plurality of repeating packet-mode fixed-site transceivers each being at a plurality of different...
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5475869 |
Radio base station capable of distinguishing between interference due to collisions of outgoing call signals and an external interference noise
In a mobile communication system having a radio base station (14A), a plurality of mobile stations connected to the radio base station via at least one control channel, and a radio exchange station...
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5475735 |
Method of providing wireless local loop operation with local mobility for a subscribed unit
Mobility is provided for wireless local loop radiotelephone systems by providing the home access network of a subscriber unit with a home access number. Upon registration of the subscriber unit...
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5442683 |
Directory structure for large scale telecommunications network allowing location of roaming mobile subscribers
A mobile telecommunications system for a large area telecommunications system, including a plurality of different networks, has a directory/network structure for minimizing data storage and...
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5400020 |
Advance notification system and method
An advance notification system (10) and method for notifying school children of the impending arrival of their school bus (19). The system includes an on-board vehicle control unit (12) for each...
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5396541 |
Call handoff in a wireless telephone system
Signaling a mobile unit to transmit a synchronization pattern with voice information upon detecting from the signal strength of the wireless mobile unit by a base station that the mobile unit is...
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5377255 |
RF repeaters for time division duplex cordless telephone systems
An RF repeater for interfacing with a base station for exchanging transmit and receive signals in a time division duplex cordless telephone system comprises a multicarrier amplifier having an input...
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5375122 |
Telephony device for a telephony communications network with fixed stations and independent stations
A fixed station (BFR1) is able to interact with a plurality of independent stations (SA1, . . . , SA4) and is linked to an external management unit (UGRB1) only by the intermediary of a single pair...
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5363376 |
Method and apparatus for synchronizing timing among radio ports in wireless communications systems
In a TDM/TDMA digital radio communications system, time synchronization between fixed ports is achieved by adjusting the timing of a first port in response to the average timing difference between...
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5361302 |
Method for encryption sync compression in an encrypted radio telephone interconnect system
A method for transparently coupling an encrypted two-way RF communication unit (100) with an encrypted landline communication unit (104). An RF message comprised of a plurality of data frames...
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5337344 |
Telecommunication system and a method for matching the numbering schemes of two telecommunication systems
The invention relates to a telecommunication system and a method for matching the numbering schemes of telecommunication systems. The telecommunication system comprises a transmission network...
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5327574 |
Mobile communication system
A mobile communication system comprises a switching station, base stations to constitute respective zones, and mobile stations moving in a service zone formed by the communication zones. Plural...
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5280521 |
Portable telephone system
A portable telephone system is disclosed in which a plurality of i-th class exchanges, which accommodate key service units of a plurality of portable telephone sets present in each service area,...
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5103474 |
Drive-by personnel monitoring system with radio link
A personnel monitoring system for monitoring presence or absence of particular individuals at preassigned monitoring locations. A local unit is provided at each monitoring location for detecting...
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4993061 |
Portable miniature high fidelity stereo tape player and cordless radio telephone system
A portable high fidelity tape player and cordless radio telephone system includes a base unit, a handset unit and a stereo unit, in which the stereo unit includes a carrier filter, a carrier...
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4977589 |
Signalling and control protocol for a communication system
A signalling and control protocol is provided wherein each subscriber unit (106) operating within a communication system (100) must transmit a request (200, 200' or 200") to communicate to a...
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4816826 |
Digital telephone switching system having a message switch with address translation
The invention provides a communications system comprising a plurality of functional units including a switching network and peripheral units, and a message switch comprising a processor and data...
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4796291 |
Mobile radio communications system
A mobile radio communications system for wide area mobile radio communications allows any two remote mobile stations to hold communications by way of a public switching network. A fixed station...
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