| Patent Number |
Title Of Patent |
Date Issued |
| 6580913 |
Method and apparatus for dynamic channel allocation for wireless communication using channel occ |
June 17, 2003 |
| The present invention concerns the efficient use of the radio spectrum in wireless communications. Channel occupancy data and channel availability data concerning a specific base station and its neighbors are used to assign frequency channels to mobile units and/or base stations. The |
| 6201799 |
Partial decorrelation for a coherent multicode code division multiple access receiver |
March 13, 2001 |
| A Multicode (MC) Code Division Multiple Access (CDMA) receiver receives J encoded multicode channels (where J>1) over L multiple air signal paths (where L>1) and forms a decorrelator output vector in which for each of the J multicode channels, the interference caused by the other J |
| 6178329 |
Method and apparatus for dynamic channel allocation for wireless communications using channel oc |
January 23, 2001 |
| The present invention concerns the efficient use of the radio spectrum in wireless communications. Channel occupancy data and channel availability data concerning a specific base station and its neighbors are used to assign frequency channels to mobile units and/or base stations. The |
| 6108321 |
Interference based dynamic channel assignment |
August 22, 2000 |
| An interference based dynamic channel assignment scheme for a wireless communication network, for self configuring dynamic channel assignment of a plurality of channels, comprises the steps of: prioritizing a channel list and prioritizing a selected subset of the prioritized channel list |
| 6088335 |
Code division multiple access system providing load and interference based demand assignment ser |
July 11, 2000 |
| A code division multiple access system provides a way of allocating an increased data rate to a requesting mobile station. A mobile station requesting a data rate in excess of the basic data rate sends received pilot strength data for its base station and base stations in adjacent cells. |
| 6069883 |
Code division multiple access system providing enhanced load and interference based demand assig |
May 30, 2000 |
| A code division multiple access system method and apparatus provides for allocation of increased bandwidth to a requesting mobile station. An access controller receives a data burst request (from either a requesting mobile station or from an external network already in connection with th |
| 6067292 |
Pilot interference cancellation for a coherent wireless code division multiple access receiver |
May 23, 2000 |
| A Code-Division Multiple Access (CDMA) receiver removes the pilot signal from the received signal. The pilot signal is defined by its multipath parameters (amplitudes, phase shift and delays) and its signature sequence. Since this information is known at the user's receiver terminal |
| 6055432 |
Dynamic channel allocation in macrocells with random exclusion for allowing underlaying autonomo |
April 25, 2000 |
| Co-Existence Dynamic Channel Assignment (DCA) techniques for overlay macrocellular systems facilitate the coexistence of embedded autonomous underlay microcellular (e.g., indoor) systems. The Co-existence of the two systems without excessive mutual interference is achieved through st |
| 6047190 |
Dynamic channel allocation in macrocells with deterministic exclusion for allowing underlaying a |
April 4, 2000 |
| Co-Existence Dynamic Channel Assignment (DCA) techniques for overlay macrocellular systems facilitate the coexistence of embedded autonomous underlay microcellular (e.g., indoor) systems. The co-existence of the two systems without excessive mutual interference is achieved through sy |
| 6009089 |
Pilot interference cancellation for a coherent wireless code division multiple access receiver |
December 28, 1999 |
| A Code-Division Multiple Access (CDMA) receiver is disclosed which removes the pilot signal from the received signal. The pilot signal is defined by its multipath parameters (amplitudes, phase shift and delays) and its signature sequence. Since this information is known at the user's rec |
| 5881056 |
Method and apparatus of a multi-code code division multiple access receiver having shared accumu |
March 9, 1999 |
| A Multi-Code (MC) Code Division Multiple Access (CDMA) receiver receives N (where N>1) encoded signal channels over multiple air signal paths. The MC-CDMA receiver receives and demodulates the N encoded signal channels into N signal samples and includes a common circuit for time-shari |
| 5870378 |
Method and apparatus of a multi-code code division multiple access receiver having a shared accu |
February 9, 1999 |
| A Multi-Code (MC) Code Division Multiple Access (CDMA) receiver receives N (where N.gtoreq.1) encoded signal channels over multiple air signal paths. The N signal channels are encoded using a properly chosen subset of Walsh codes based on a Walsh-Matrix, W.sup.M, where M is a power of tw |
| 5856971 |
Code division multiple access system providing variable data rate access to a user |
January 5, 1999 |
| A multi-code code division multiple access system allows a user at a radio transmitter unit to dynamically change its source data bit rate. In response to a user input selecting one of said plurality of source bit rates, an adjustable coding means in the transmitter spreads and transmits |
| 5784360 |
Controlling power and access of wireless device to base stations which use code division multipl |
July 21, 1998 |
| The invention relates to the use of CDMA techniques. Data signals to be transmitted from a plurality of wireless devices are spread across a common bandwidth. The data signals are received by a base station as a composite spread signal. The base station partially despreads the compos |
| 5737326 |
Multi-code code division multiple access receiver |
April 7, 1998 |
| A Multi-Code (MC) Code Division Multiple Access (CDMA) receiver receives N (where N>1) encoded signal channels over multiple air signal paths. In the MC-CDMA receiver, once a timing correlator means has recovered the timing and control signals for the data signal received over any par |
| 5734646 |
Code division multiple access system providing load and interference based demand assignment ser |
March 31, 1998 |
| A code division multiple access system provides a way of allocating an increased data rate to a requesting mobile station. A mobile station requesting a data rate in excess of the basic data rate sends received pilot strength data for its base station and base stations in adjacent ce |
| 5671218 |
Controlling power and access of wireless devices to base stations which use code division multip |
September 23, 1997 |
| The invention relates to the use of CDMA techniques. Data signals to be transmitted from a plurality of wireless devices are spread across a common bandwidth. The data signals are received by a base station as a composite spread signal. The base station partially despreads the compos |
| 5625884 |
Global paging with reverse virtual call setup in wireless personal communications |
April 29, 1997 |
| A method and apparatus providing communications between mobile units and other communications devices, is disclosed wherein, in response to a request to call a mobile unit from an originating communications device, a paging signal is sent via a global communications network and received |
| 5577168 |
Beacon based packetized cellular system with real-time processing |
November 19, 1996 |
| A packetized cellular system in which a mobile quasi-periodically transmits a beacon signal containing an ID number to a first base station in the cell in which it is located for storage with the ID's of other active mobiles in the cell. A copy of a list of the active mobiles in that cel |
| 5442625 |
Code division multiple access system providing variable data rate access to a user |
August 15, 1995 |
| A multi-code code division multiple access system allows a user at a radio transmitter unit to dynamically change its source data bit rate. In response to a user input selecting one of the plurality of source bit rates, an adjustable coding circuit in the transmitter spreads and tran |
| 5276730 |
Access method for distributed dynamic channel allocation in microcells |
January 4, 1994 |
| A method of providing local autonomous control of channel allocation of a cellular telecommunications network. In one prior art method, which can be identified as the timid method, a channel is selected for use by an incoming user if it is not being used by any of the cells which surroun |
| 5119196 |
Ghost cancellation of analog TV signals |
June 2, 1992 |
| Ghosts are canceled in received analog TV (for IDTV, EDTV, and HDTV) signals by utilizing the fact that there are short periods of time without the analog signals (the horizontal flyback interval between the lines) to process the received signal on a line-to-line basis using a finite imp |
| 5007067 |
Diversity coding for transparent self-healing communications networks |
April 9, 1991 |
| This invention is a technique for the substantially instantaneous self-healing of digital communications networks. Digital data streams from each of N nearby sources are combined and encoded to produce N+M coded data streams using a coding algorithm. The N+M coded data streams are then |
