Top 100 US Patents in Wireless Communication
section h - electricity > electric communication technique > wireless communication networks
Sorted by IPQ® Score, an objective measure of patent quality. View scores and methodology at PatentRatings.com. You can also view all by publication date instead.
US7146156 (B2), filed
Mon Apr 14 00:00:00 CDT 2003
, published
Tue Dec 05 00:00:00 CST 2006
- GTE WIRELESS INC
A cellular radiotelephone system ( 10 ) includes mobile stations ( 28 ) which may be remotely programmed from a customer activation system ( 12 ) to effect activation and other programming needs. Mobile stations ( 28 ) are manufactured in a blank form that...
US5235633 (A), filed
Thu Dec 26 00:00:00 CST 1991
, published
Tue Aug 10 00:00:00 CDT 1993
- JONES SCOTT L
A cellular telephone system includes a plurality of cell sites and a mobile telephone switching office. Call management, including selection of a cell site most appropriate for a call associated with a mobile unit, are made based on the geographic location of...
US6389002 (B1), filed
Tue Sep 21 00:00:00 CDT 1999
, published
Tue May 14 00:00:00 CDT 2002
- INTERDIGITAL TECH CORP
A spread-spectrum CDMA communications system for communicating data between a plurality of users to a plurality of spread-spectrum units. The spread-spectrum communications system is located within a same geographical region as occupied by an existing FDMA,...
US7260395 (B1), filed
Mon Oct 30 00:00:00 CST 2000
, published
Tue Aug 21 00:00:00 CDT 2007
- SYMBOL TECHNOLOGIES INC
The present invention relates to apparatus and methods for adapting a mobile unit to communication requirements of a particular country or geographic region. A wireless local area network communications system may include access points and remote terminals....
US5619503 (A), filed
Tue Jan 11 00:00:00 CST 1994
, published
Tue Apr 08 00:00:00 CDT 1997
- ERICSSON GE MOBILE INC
The invention relates to a radio communication system and method for minimizing co-channel interference. The system and method employ a matrix processor to separate signals received from, or transmitted to, a plurality of mobile units. The coefficients of the...
US5377183 (A), filed
Mon Apr 11 00:00:00 CDT 1994
, published
Tue Dec 27 00:00:00 CST 1994
- ERICSSON GE MOBILE COMMUNICAT
A Code Division Multiple Access (CDMA) communication system which contains a calling channel which is used to inform silent mobiles that they are being called. In the system, the calling channel is chosen to be the strongest overlapping signal so that it...
US7460507 (B2), filed
Fri Feb 20 00:00:00 CST 2004
, published
Tue Dec 02 00:00:00 CST 2008
- BROADCOM CORP
A packet-based, hierarchical communication system, arranged in a spanning tree configuration, is described in which wired and wireless communication networks exhibiting substantially different characteristics are employed in an overall scheme to link portable...
US7471659 (B2), filed
Fri May 09 00:00:00 CDT 2003
, published
Tue Dec 30 00:00:00 CST 2008
- QUALCOMM INC
A system and method for determining 1xEV-DO availability for a packet data call in a wireless device is presented. When the wireless device receives a request to initiate a packet data call, the device determines if it currently has access to a preferred...
US6219694 (B1), filed
Fri May 29 00:00:00 CDT 1998
, published
Tue Apr 17 00:00:00 CDT 2001
- RES IN MOTION LTD
A system and method for pushing information from a host system to a mobile data communication device upon sensing a triggering event is disclosed. A redirector program operating at the host system enables a user to continuously redirect certain user-selected...
US5640414 (A), filed
Mon Apr 11 00:00:00 CDT 1994
, published
Tue Jun 17 00:00:00 CDT 1997
- QUALCOMM INC
In a code division multiple access (CDMA) spread spectrum cellular communication system in which a mobile station user communicates with another system user via at least one base station, wherein each base station transmits a common pilot signal of a different...
US5841768 (A), filed
Thu Jun 27 00:00:00 CDT 1996
, published
Tue Nov 24 00:00:00 CST 1998
- INTERDIGITAL TECH CORP
A system and method of controlling transmission power during the establishment of a channel in a CDMA communication system utilize the transmission of a short code from a subscriber unit to a base station during initial power ramp-up. The short code is a...
US6169759 (B1), filed
Mon Mar 22 00:00:00 CST 1999
, published
Tue Jan 02 00:00:00 CST 2001
- GOLDEN BRIDGE TECHNOLOGY
An improvement to a code-division-multiple-access (CDMA) system employing spread-spectrum modulation, with the CDMA system having a base station (BS) and a plurality of remote stations. The base station has a BS-spread-spectrum transmitter and a BS-spread-spec...
US7099292 (B2), filed
Fri Feb 08 00:00:00 CST 2002
, published
Tue Aug 29 00:00:00 CDT 2006
- INTERDIGITAL TECH CORP
A spread spectrum remote unit produces a message signal having message data. A reference signal is produced. The reference signal is used to recover the message data from a combined spread spectrum signal. The reference signal and the message signal is...
US6788931 (B2), filed
Fri Sep 27 00:00:00 CDT 2002
, published
Tue Sep 07 00:00:00 CDT 2004
- METRO ONE TELECOMMUNICATIONS
A cellular telephone subscriber who wishes directory assistance services is connected in the conventional manner to an operator who identifies a destination telephone number desired by the subscriber. As in the prior art, the operator then initiates a call...
US7440416 (B2), filed
Mon Dec 15 00:00:00 CST 2003
, published
Tue Oct 21 00:00:00 CDT 2008
- BROADCOM CORP
A hierarchical communication system, arranged in a spanning tree configuration, is described in which wired and wireless communication networks exhibiting substantially different characteristics are employed in an overall scheme to link portable or mobile...
USRE40540 (E1), filed
Wed Dec 17 00:00:00 CST 2003
, published
Tue Oct 14 00:00:00 CDT 2008
- MLR LLC
A network and method of operating a network of wireless service providers adapted to interact with a plurality of omni-modal wireless products within a given geographic area in a manner to permit the wireless service providers to "borrow" radio frequencies...
US5008900 (A), filed
Mon Aug 14 00:00:00 CDT 1989
, published
Tue Apr 16 00:00:00 CDT 1991
- INT MOBILE MACHINES
A subscriber unit for wireless communication with a base station in a wireless subscriber communication system includes a FIR chip, a DIF (digital intermediate frequency) chip, a single processor chip and a radio. The processor chip transcodes a digital voice...
US5056109 (A), filed
Tue Nov 07 00:00:00 CST 1989
, published
Tue Oct 08 00:00:00 CDT 1991
- QUALCOMM INC
A power control system for a cellular mobile telephone system in which system users communicate information signals between one another via at least one cell site using code division multiple access spread spectrum communication signals. The power control...
US5812951 (A), filed
Wed Nov 23 00:00:00 CST 1994
, published
Tue Sep 22 00:00:00 CDT 1998
- HUGHES ELECTRONICS CORP
The present invention relates to a wireless personal communications system (WPCS) having several features embodied in several forms. In one embodiment, the, WPCS includes at least one RP, a first SU in communication with the RP, and a second SU in communicatio...
US5878339 (A), filed
Fri Feb 06 00:00:00 CST 1998
, published
Tue Mar 02 00:00:00 CST 1999
- GTE MOBILE COMM SERVINC
A cellular radiotelephone system (10) includes mobile stations (28) which may be remotely programmed from a customer activation system (12) to effect activation and other programming needs. Mobile stations (28) are manufactured in a blank form that causes them...
US5109528 (A), filed
Tue Jun 13 00:00:00 CDT 1989
, published
Tue Apr 28 00:00:00 CDT 1992
- ERICSSON TELEFON AB L M
The invention relates to a method in mobile radio systems in which the responsibility for transmitting message information to a mobile station is handed over from a first base station transmitter to a second base station transmitter. In this method, the same...
US4675863 (A), filed
Wed Mar 20 00:00:00 CST 1985
, published
Tue Jun 23 00:00:00 CDT 1987
- INT MOBILE MACHINES
A system for the wireless transmission of multiple information signals utilizing digital time division circuits between a base station and a plurality of subscriber stations. The subscriber stations may be fixed or movable. The number of time division circuits...
US4658096 (A), filed
Tue Sep 18 00:00:00 CDT 1984
, published
Tue Apr 14 00:00:00 CDT 1987
- METROFONE INC
An interface system for interfacing a standard telephone set with a radio transceiver as part of a telephone network is provided. The radio transceiver may be a conventional cellular-type transceiver or other transceiver having typical control inputs and...
US7024189 (B2), filed
Thu Apr 15 00:00:00 CDT 2004
, published
Tue Apr 04 00:00:00 CDT 2006
- TELULAR CORP
A Bluetooth-wireless docking station for use with a Bluetooth-enabled cellular mobile handset, which docking station allows mobility to the cellular mobile handset rather than having to be fixed stationarily in the docking station, which docking station...
US7466986 (B2), filed
Thu Jan 19 00:00:00 CST 2006
, published
Tue Dec 16 00:00:00 CST 2008
- IBM
A WIFI-enabled and GPS-enabled user device executes a hotspot location utility, which enables the device to detect WIFI hotspots and update a locally-stored hotspot location database (LHLD) containing geographically-mapped hotspots. When a hotspot is detected,...
US5566388 (A), filed
Wed Jan 19 00:00:00 CST 1994
, published
Tue Oct 15 00:00:00 CDT 1996
- ERICSSON GE MOBILE INC
In a multisite radio frequency (RF) signal transmission system, a multisite switch routes audio and data information throughout the system. This switch has a node through which a system manager and system operator can configure and diagnose each site, console...
US5603081 (A), filed
Mon Nov 01 00:00:00 CST 1993
, published
Tue Feb 11 00:00:00 CST 1997
- ERICSSON TELEFON AB L M
A communications system in which information is transmitted in a plurality of time slots grouped into a plurality of superframes which are, in turn, grouped into a plurality of paging frames. A remote station receives paging messages once in each paging frame.
METHOD AND SYSTEM FOR PROVIDING A SOFT HANDOFF IN COMMUNICATIONS IN A CDMA CELLULAR TELEPHONE SYSTEM
US5101501 (A), filed
Tue Nov 07 00:00:00 CST 1989
, published
Tue Mar 31 00:00:00 CST 1992
- QUALCOMM INC
In a cellular telephone system a system for directing communications between a mobile user and cell-sites as a mobile user changes cell-site service areas. The mobile user includes an apparatus for, while in communication with another system user via one...
US6622016 (B1), filed
Mon Oct 04 00:00:00 CDT 1999
, published
Tue Sep 16 00:00:00 CDT 2003
- SPRINT SPECTRUM LP
A method and system for controlled provisioning of a desired set of service logic for a subscriber of group of subscribers. In response to a designated stimulus, such as a time-event, a location-event or a threshold-event, a network entity modifies the...
US6895450 (B2), filed
Tue Apr 16 00:00:00 CDT 2002
, published
Tue May 17 00:00:00 CDT 2005
- BROADCOM CORP
An apparatus and a method for routing data in a radio data communication system having one or more host computers, one or more intermediate base stations, and one or more RF terminals organizes the intermediate base stations into an optimal spanning-tree...
US6396920 (B1), filed
Mon Jun 07 00:00:00 CDT 1999
, published
Tue May 28 00:00:00 CDT 2002
- METRO ONE TELECOMMUNICATIONS
A mobile telephone, or personal communication services subscriber who wishes directory assistance services is connected in the conventional manner to an operator who identifies a destination telephone number desired by the subscriber. As known in the prior...
US6456621 (B1), filed
Wed Aug 19 00:00:00 CDT 1998
, published
Tue Sep 24 00:00:00 CDT 2002
- MATSUSHITA ELECTRIC IND CO LTD
Disclosed is a migration communication control device constructed to control a continuous communication between a mobile node and a node unaffected the mobile node's migration. The migration communication control device comprises a first migration control...
US6580700 (B1), filed
Tue Dec 29 00:00:00 CST 1998
, published
Tue Jun 17 00:00:00 CDT 2003
- SYMBOL TECHNOLOGIES INC
A communications network comprising a wireless local area network includes a plurality of access points connected to a host computer and each other, and a plurality of mobile units with each mobile unit being arranged for association with at least one access...
US5742905 (A), filed
Mon Sep 19 00:00:00 CDT 1994
, published
Tue Apr 21 00:00:00 CDT 1998
- BELL COMMUNICATIONS RES
A person communications internetworking provides a network subscriber with the ability to remotely control the receipt and delivery of wireless and wireline voice and text messages. The network operates as an interfaces between various wireless and wireline...
US5914481 (A), filed
Tue Oct 07 00:00:00 CDT 1997
, published
Tue Jun 22 00:00:00 CDT 1999
- NORAND CORP
A pocket-sized hand-held data processing device with a coupling system, a user interface and an optical indicia reader. The device can include a display to display alphanumeric information. The display can have a touch screen input area and a handwritten input...
US5740366 (A), filed
Tue Feb 28 00:00:00 CST 1995
, published
Tue Apr 14 00:00:00 CDT 1998
- NORAND CORP
An apparatus and a method for routing data in a radio data communication system having one or more host computers, one or more intermediate base stations, and one or more RF terminals organizes the intermediate base stations into an optimal spanning-tree...
US4941200 (A), filed
Mon Aug 03 00:00:00 CDT 1987
, published
Tue Jul 10 00:00:00 CDT 1990
- ORION INDUSTRIES
US5812953 (A), filed
Wed Jun 07 00:00:00 CDT 1995
, published
Tue Sep 22 00:00:00 CDT 1998
- BELLSOUTH CORP
An apparatus for activating a cellular telephone (10) within a cellular telecommunications network. A PCMCIA card (62) interacts with a controller (50) to display required programming information and questions. A user of the cellular telephone (10) inputs...
US6137840 (A), filed
Wed Nov 15 00:00:00 CST 1995
, published
Tue Oct 24 00:00:00 CDT 2000
- QUALCOMM INC
A method and apparatus for controlling transmission power in a mobile communication system is disclosed. The method disclosed provides for a closed-loop power control method for variable rate transmissions. The power of transmissions is varied in accordance...
US6431451 (B1), filed
Fri Jun 30 00:00:00 CDT 2000
, published
Tue Aug 13 00:00:00 CDT 2002
- INTERMEC IP CORP
A portable, hand-held data terminal of modular structure includes a base module with a keyboard and a display screen. A data and communications module may be selected from a number of different data and communications modules, each having different types of...
US5974325 (A), filed
Mon Mar 06 00:00:00 CST 1995
, published
Tue Oct 26 00:00:00 CDT 1999
- MOTOROLA INC
A communication system employs a method and apparatus for exchanging communicated signals between a communication unit (e.g., 17) and a central site (205). A remote base site (65) or the central site (205) determines whether a signal must be exchanged between...
US6738617 (B2), filed
Tue Dec 04 00:00:00 CST 2001
, published
Tue May 18 00:00:00 CDT 2004
- QUALCOMM INC
A method and apparatus for reducing latency in a group communication network provides for a significant reduction in the actual total dormancy wakeup time and the PTT latency by exchanging group call signaling even when mobiles are dormant and no traffic...
US6925071 (B2), filed
Fri Feb 08 00:00:00 CST 2002
, published
Tue Aug 02 00:00:00 CDT 2005
- INTERDIGITAL TECH CORP
A spread spectrum remote unit produces a message signal having message data. A reference signal is produced. The reference signal is used to recover the message data from a combined spread spectrum signal. The reference signal and the message signal is...
US5351269 (A), filed
Wed Dec 05 00:00:00 CST 1990
, published
Tue Sep 27 00:00:00 CDT 1994
- SCS MOBILECOM INC
A spread spectrum CDMA communications system for communicating data and/or digitized voice between a plurality of users to a plurality of PCN units. The spread spectrum communications system is located within a same geographical region as occupied by an...
US6374311 (B1), filed
Tue Apr 14 00:00:00 CDT 1998
, published
Tue Apr 16 00:00:00 CDT 2002
- INTERMEC IP CORP
An apparatus and a method for routing data in a radio data communication system having one or more host computers, one or more intermediate base stations, and one or more RF terminals organizes the intermediate base stations into an optimal spanning-tree...
US6975883 (B1), filed
Mon Jan 28 00:00:00 CST 2002
, published
Tue Dec 13 00:00:00 CST 2005
- GIESECKE DEVRIENT GMBH
A method for putting into operation a processor smart card in a network for communication, preferably in a GSM network, wherein the card user must identify himself with respect to the processor smart card (SIM) by a personal identification number. An...
US4905302 (A), filed
Wed Jun 03 00:00:00 CDT 1987
, published
Tue Feb 27 00:00:00 CST 1990
- GEN ELECTRIC
A digitally trunked radio repeater system provides substantial improvements in timeliness of channel acquisition and channel drop, and in reliability of critical control signalling. The system uses a much higher digital signalling rate than is typically found...
US4697281 (A), filed
Fri Mar 14 00:00:00 CST 1986
, published
Tue Sep 29 00:00:00 CDT 1987
- SPECTRUM CELLULAR COMMUNICATIO
The cellular telephone data communication system and method involves the use of a mobile data processing interface and a cooperating static data processing interface to effectively transmit data over a cellular telephone system. Each data processing interface...
US5557656 (A), filed
Fri Mar 06 00:00:00 CST 1992
, published
Tue Sep 17 00:00:00 CDT 1996
- AIRCELL INC
Aircraft communications are established on a cellular system by having the transmission to aircraft directed above ground level so as not to interfere with ground cellular systems and having the transmissions from the aircraft at extreme low power levels so as...
US4737978 (A), filed
Fri Oct 31 00:00:00 CST 1986
, published
Tue Apr 12 00:00:00 CDT 1988
- MOTOROLA INC
Adjacent cellular systems (101-103) are interconnected to form a network providing telephone coverage to mobiles located throughout their combined coverage areas (111-113). Each networked cellular system (101-103) includes base sites (412, 414, 416) located in...
US6816727 (B2), filed
Wed Apr 30 00:00:00 CDT 2003
, published
Tue Nov 09 00:00:00 CST 2004
- METRO ONE TELECOMMUNICATIONS
A wireless telephone subscriber who wishes directory assistance in the form of directions from one specified location to another is connected to a directory assistance agent. The subscriber identifies a destination location and any requested travel criteria....
US5815799 (A), filed
Wed Aug 07 00:00:00 CDT 1996
, published
Tue Sep 29 00:00:00 CDT 1998
- JOHNSON CO E F
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 unique signaling protocol and a switching protocol especially...
US4835731 (A), filed
Fri Aug 14 00:00:00 CDT 1987
, published
Tue May 30 00:00:00 CDT 1989
- GEN ELECTRIC
A downlink between a communications dispatch console and a digitally trunked radio repeater system site controller efficiently transfers message data between the site controller and the console over a standard 9.2 kilobit per second landline. A downlink...
US6792256 (B1), filed
Tue Jan 13 00:00:00 CST 1998
, published
Tue Sep 14 00:00:00 CDT 2004
- BROADCOM CORP
A radio card sized for insertion into an electronic device. The radio card includes a housing; a radio circuit disposed within the housing; an internal antenna coupled to the radio circuit; at least one external antenna contact, disposed on the housing,...
US6400702 (B1), filed
Tue Mar 21 00:00:00 CST 2000
, published
Tue Jun 04 00:00:00 CDT 2002
- INTERMEC IP CORP
An apparatus and a method for routing data in a radio data communication system having one or more host computers, one or more intermediate base stations, and one or more RF terminals organizes the intermediate base stations into an optimal spanning-tree...
US6400929 (B1), filed
Mon Dec 06 00:00:00 CST 1999
, published
Tue Jun 04 00:00:00 CDT 2002
- MATSUSHITA ELECTRIC IND CO LTD
The communication terminal apparatus measures reception quality and reports the measurement result to the base station apparatus, and the base station apparatus switches the transmission rate based on the reported result of the reception quality. In this way,...
US6400320 (B1), filed
Thu Aug 24 00:00:00 CDT 2000
, published
Tue Jun 04 00:00:00 CDT 2002
- MASSACHUSETTS INSITUTE OF TECH
An antenna selection method is used in a wireless location system that determines the geographic location of a mobile wireless transmitter. The wireless location system includes signal collection systems connected to multiple antennas at a plurality of cell...
US7366151 (B2), filed
Thu Oct 09 00:00:00 CDT 2003
, published
Tue Apr 29 00:00:00 CDT 2008
- BROADCOM CORP
A packet-based, hierarchical communication system, arranged in a spanning tree configuration, is described in which wired and wireless communication networks exhibiting substantially different characteristics are employed in an overall scheme to link portable...
US5052020 (A), filed
Thu Jan 18 00:00:00 CST 1990
, published
Tue Sep 24 00:00:00 CDT 1991
- NORAND CORP
A signal amplitude shaping circuit is interposed between a signal source and a signal input terminal of a frequency modulation circuit of a typical voice radio transmitter or transceiver unit. The amplitude shaping circuit includes a high-impedance sampling...
US5663957 (A), filed
Wed Jul 12 00:00:00 CDT 1995
, published
Tue Sep 02 00:00:00 CDT 1997
- ERICSSON GE MOBILE INC
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...
US5073900 (A), filed
Mon Mar 19 00:00:00 CST 1990
, published
Tue Dec 17 00:00:00 CST 1991
- MALLINCKRODT ALBERT J
A cellular communications system is provided having both surface and satellite nodes which are fully integrated for providing service over large areas. A spread spectrum system is used with code division multiple access (CDMA) employing forward error...
US7113780 (B2), filed
Sun Dec 07 00:00:00 CST 2003
, published
Tue Sep 26 00:00:00 CDT 2006
- AIRCELL INC
The present non-terrestrial feature transparency system spoofs the Air-to-Ground Network and the ground-based cellular communication network into thinking that the wireless subscriber devices have no special considerations associated with their operation, even...
US7020114 (B2), filed
Fri Feb 08 00:00:00 CST 2002
, published
Tue Mar 28 00:00:00 CST 2006
- INTERDIGITAL TECH CORP
A spread spectrum communication system produces a reference signal. A plurality of message signals are produced. Each message signal has message data. The reference signal and the plurality of message signals are combined as a combined spread spectrum signal....
US6928302 (B1), filed
Thu Jul 20 00:00:00 CDT 2000
, published
Tue Aug 09 00:00:00 CDT 2005
- BROADCOM CORP
A radio card, such as a PCMCIA card, received by an electronic device has a first interface coupling radio circuitry within the radio card to the electronic device. The radio card also has a second interface, independent of the first interface, that couples...
US7450542 (B2), filed
Wed Dec 22 00:00:00 CST 2004
, published
Tue Nov 11 00:00:00 CST 2008
- AT T MOBILITY II LLC
The high quality PCS communications are enabled in environments where adjacent PCS service bands operate with out-of-band harmonics that would otherwise interfere with the system's operation. The highly bandwidth-efficient communications method combines a form...
US6917601 (B2), filed
Fri Feb 08 00:00:00 CST 2002
, published
Tue Jul 12 00:00:00 CDT 2005
- INTERDIGITAL TECH CORP
A spread spectrum remote unit produces a message signal having message data. A reference signal is produced. The reference signal is used to recover the message data from a combined spread spectrum signal. The reference signal and the message signal is...
US6754486 (B2), filed
Mon Sep 30 00:00:00 CDT 2002
, published
Tue Jun 22 00:00:00 CDT 2004
- METRO ONE TELECOMMUNICATIONS
A mobile telephone, or personal communication services subscriber who wishes directory assistance services is connected in the conventional manner to an operator who identifies a destination telephone number desired by the subscriber. As known in the prior...
US5446756 (A), filed
Thu Oct 28 00:00:00 CDT 1993
, published
Tue Aug 29 00:00:00 CDT 1995
- CELSAT AMERICA INC
A cellular communications system is provided having both surface and satellite nodes which are fully integrated for providing service over large areas. A spread spectrum system is used with code division multiple access (CDMA) employing forward error...
US5428668 (A), filed
Thu Nov 04 00:00:00 CST 1993
, published
Tue Jun 27 00:00:00 CDT 1995
- ERICSSON GE MOBILE COMMUNICAT
Transceiver frequency and optionally power level are allocated to a radio personal communications system which includes a base station connected to a wire telephone network and a cellular terminal operating within a region of a wide area cellular network to...
US6374102 (B1), filed
Mon Dec 13 00:00:00 CST 1999
, published
Tue Apr 16 00:00:00 CDT 2002
- AT T CORP
The instant invention discloses a method and system for providing a novel wireless centrex service that untethers subscribers from the immobility associated with traditional desktop telephones. Essentially, the present invention extends the benefits of...
US5218187 (A), filed
Mon Feb 25 00:00:00 CST 1991
, published
Tue Jun 08 00:00:00 CDT 1993
- NORAND CORP
A portable, hand-held data terminal of modular structure includes a base module with a keyboard and a display screen. A data and communications module may be selected from a number of different data and communications modules, each having different types of...
US4989230 (A), filed
Fri Sep 23 00:00:00 CDT 1988
, published
Tue Jan 29 00:00:00 CST 1991
- MOTOROLA INC
A cellular cordless telephone (10) operates with both a cordless base station (180) and a cellular base station (190) and cellular control terminal (196). In one embodiment (FIG. 2), a cellular cordless telephone (100) includes a cellular transceiver (120),...
US5195090 (A), filed
Tue Jul 09 00:00:00 CDT 1991
, published
Tue Mar 16 00:00:00 CST 1993
- AT T BELL LAB
US5703881 (A), filed
Tue Mar 09 00:00:00 CST 1993
, published
Tue Dec 30 00:00:00 CST 1997
- HUGHES AIRCRAFT CO
A multisubscriber unit is disclosed for use of in a digital cellular communication system to communicate with a base transceiver station and eventually to switched telephone network. The multisubscriber unit connects to a plurality of individual subscriber...
US5095500 (A), filed
Fri Oct 19 00:00:00 CDT 1990
, published
Tue Mar 10 00:00:00 CST 1992
- MOTOROLA INC
A system and method of evaluating the radio coverage of a geographic area serviced by a digital cellular radiotelephone communication system is described which comprises a plurality of base stations each having a transmitter and a receiver and a plurality of...
US5159701 (A), filed
Tue Jun 18 00:00:00 CDT 1991
, published
Tue Oct 27 00:00:00 CST 1992
- JOHNSON CO E F
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 network terminal (RNT) switch means and a unique signaling...
US5627879 (A), filed
Wed Mar 02 00:00:00 CST 1994
, published
Tue May 06 00:00:00 CDT 1997
- ADC TELECOMMUNICATIONS INC
A microcellular communications network includes a plurality of base station units and corresponding antenna units. The base station units are housed in a common location. Each includes either conventional transmitters and receivers or all digital transmitter...
US6490268 (B1), filed
Fri May 12 00:00:00 CDT 2000
, published
Tue Dec 03 00:00:00 CST 2002
- SAMSUNG ELECTRONICS CO LTD
A method of establishing a supplemental channel (SCH) to provide burst timing for high-speed data transmission in a mobile communication system is disclosed. In the SCH establishing method, a source base station transceiver determines that a traffic burst...
US5610974 (A), filed
Wed Apr 05 00:00:00 CDT 1995
, published
Tue Mar 11 00:00:00 CST 1997
- ERICSSON TELEFON AB L M
A roaming arrangement enables roaming between different types of networks in a telecommunication system that includes a first standardized type of mobile network, a so-called home network, and a second standardized type of mobile network, a so-called guest...
US6452915 (B1), filed
Fri Jul 09 00:00:00 CDT 1999
, published
Tue Sep 17 00:00:00 CDT 2002
- MALIBU NETWORKS INC
An IP flow classification system is used in a wireless telecommunications system. The IP flow classification system groups IP flows in a packet-centric wireless point to multi-point telecommunications system. The classification system includes: a wireless base...
US5983108 (A), filed
Tue May 02 00:00:00 CDT 1995
, published
Tue Nov 09 00:00:00 CST 1999
- HIGHWAYMASTER COMM INC
A method and apparatus for a nation-wide cellular telephone network that controls access to cellular systems is provided in which a cellular system (14) includes a mobile unit (16), transmission towers (18), MTSO (20), and a clearinghouse link (22). The...
US7272127 (B2), filed
Fri Jul 12 00:00:00 CDT 2002
, published
Tue Sep 18 00:00:00 CDT 2007
- MATSUSHITA ELECTRIC IND CO LTD
A partner node and a method of communication control with a mobile node that is a communication partner with the partner mode is provided. The mobile node can provide a migration destination address, via a migration post massage transmitted from the mobile...
US5633873 (A), filed
Wed Sep 13 00:00:00 CDT 1995
, published
Tue May 27 00:00:00 CDT 1997
- HUGHES AIRCRAFT CO
A digital cellular communication system in which fixed subscribers and mobile subscribers share base transceiver stations, base station controllers and mobile switching centers to communicate with the switched telephone network. Mobile subscribers communicate...
US6522876 (B1), filed
Mon Oct 04 00:00:00 CDT 1999
, published
Tue Feb 18 00:00:00 CST 2003
- SPRINT SPECTRUM LP
A service management system based on customized profile management codes. In an advanced intelligent network, a central control point includes a set of logic that defines profile management codes customized for individual subscribers or groups of subscribers....
US5375161 (A), filed
Thu Feb 15 00:00:00 CST 1990
, published
Tue Dec 20 00:00:00 CST 1994
- ACCESSLINE TECHNOLOGIES INC
A method and apparatus for processing incoming telephone calls to a telephone control system. The apparatus includes a memory for storing electronic signals including signals representative of telephone network addresses and a processing unit for processing an...
US5485486 (A), filed
Wed Mar 23 00:00:00 CST 1994
, published
Tue Jan 16 00:00:00 CST 1996
- QUALCOMM INC
A power control system for a cellular mobile telephone system in which system users communicate information signals between one another via at least one cell site using code division multiple access spread spectrum communication signals. The power control...
US5042082 (A), filed
Mon Jun 26 00:00:00 CDT 1989
, published
Tue Aug 20 00:00:00 CDT 1991
- ERICSSON TELEFON AB L M
US5299198 (A), filed
Thu Dec 06 00:00:00 CST 1990
, published
Tue Mar 29 00:00:00 CST 1994
- HUGHES AIRCRAFT CO
A mobile telephone system multiplexes plural voice traffic channels on a single carrier using a TDMA protocol. The capacity of the mobile telephone system is increased by assigning voice traffic capacity, not on a conversation basis, but on a speech spurt...
US5995826 (A), filed
Tue Aug 05 00:00:00 CDT 1997
, published
Tue Nov 30 00:00:00 CST 1999
- METRO ONE TELECOMMUNICATIONS
A cellular telephone subscriber who wishes directory assistance services is connected in the conventional manner to an operator who identifies a destination telephone number desired by the subscriber. As in the prior art, the operator then initiates a call...
US6968208 (B2), filed
Tue Nov 26 00:00:00 CST 2002
, published
Tue Nov 22 00:00:00 CST 2005
- TEXAS INSTRUMENTS INC
A system for loading data into a module to be used with a portable computer device and the data in the module activated by a wireless connection or from instructions from the teacher. The module may be part of a rechargeable battery pack that includes data...
US5548802 (A), filed
Tue Mar 28 00:00:00 CST 1995
, published
Tue Aug 20 00:00:00 CDT 1996
- JOHNSON CO E F
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 network terminal (RNT) switch and a unique signaling protocol...
US6684071 (B1), filed
Mon Feb 05 00:00:00 CST 1996
, published
Tue Jan 27 00:00:00 CST 2004
- ERICSSON INC
Exemplary embodiments of the present invention describe terminal position location methods and systems. Relative powers of nearby spot beams which are generated by array antennas are determined. For example, powers from six neighboring spot beams relative to a...
US5524007 (A), filed
Mon Dec 13 00:00:00 CST 1993
, published
Tue Jun 04 00:00:00 CDT 1996
- MOTOROLA INC
An improved network interface architecture for a packet switch provides for the combination of both voice and data in a single switch using a common packet structure. It allows for the dynamic allocation of bandwidth based on system loading. This includes not...
US6134316 (A), filed
Fri Oct 18 00:00:00 CDT 1996
, published
Tue Oct 17 00:00:00 CDT 2000
- ERICSSON TELEFON AB L M
A telecommunications domain (20) having subscriber number relocateablity includes a plurality of physical nodes or exchanges (22) between which calls are connected and a subscriber location server (30) which is connected to and accessed by each of the...
US5845201 (A), filed
Fri Jul 01 00:00:00 CDT 1994
, published
Tue Dec 01 00:00:00 CST 1998
- NOLLER COMMUNICATIONS INC
A radio communication system for processing information signals received from telephone trunk lines for transmission over a plurality of RF subscriber channels is disclosed. The system includes a network interface exchange for sampling the received information...
US5257283 (A), filed
Fri Aug 23 00:00:00 CDT 1991
, published
Tue Oct 26 00:00:00 CDT 1993
- QUALCOMM INC
A power control system for a cellular mobile telephone system in which system users communicate information signals between one another via at least one cell site using code division multiple access spread spectrum communication signals. The power control...
USRE37141 (E1), filed
Mon May 08 00:00:00 CDT 1995
, published
Tue Apr 17 00:00:00 CDT 2001
- SPECTRUM INFORMATION TECH
The cellular telephone data communication system and method involves the use of a mobile data processing interface and a cooperating static data processing interface to effectively transmit data over a cellular telephone system. Each data processing interface...
US5790606 (A), filed
Fri Feb 24 00:00:00 CST 1995
, published
Tue Aug 04 00:00:00 CDT 1998
- ERICSSON GE MOBILE INC
Methods and systems for processing signals in radio communication systems are described which include processes for handling co-channel interference while reducing the number of Viterbi states being processed. A spatial analogy to the Viterbi MLSE process is...
US5166932 (A), filed
Fri Apr 27 00:00:00 CDT 1990
, published
Tue Nov 24 00:00:00 CST 1992
- SEIKO EPSON CORP
A radio paging network transmits non-paging data, such as facsimile images, to lap top computer receivers by formatting the data into a series of packets and interleaving these packets, on a space available basis, into the paging signal.
US5596329 (A), filed
Fri Aug 12 00:00:00 CDT 1994
, published
Tue Jan 21 00:00:00 CST 1997
- NORTHERN TELECOM LTD
A smart antenna for a base station comprises a plurality of antenna arrays each capable of forming a multiplicity of separate overlapping narrow beams in azimuth, the arrays being positioned such that the totality of beams formed by the arrays provides a...
