| Patent Number |
Title Of Patent |
Date Issued |
| 6704370 |
Interleaving methodology and apparatus for CDMA |
March 9, 2004 |
| Disclosed is an encoder, interleaver and splitter design approach for increasing system capacity. This is accomplished in a dual path embodiment by splitting the data stream into two subsets where one subset contains even number position bits of the original set and the other subset |
| 6590874 |
Method and system for implementing outer loop power control in discontinuous transmission mode u |
July 8, 2003 |
| A signalling method for controlling unnecessary power increases and call drop during discontinuous transmission (DTX) mode of a frame-based transmission system. The signalling method comprises the steps of (1) detecting, at a receiver end of the transmission system a status of a tran |
| 6587447 |
Method and system for performing outer loop power control in discontinuous transmission mode |
July 1, 2003 |
| A method for controlling unnecessary power increases and call drop during discontinuous transmission (DTX) mode of a frame-based transmission system. The method comprises the steps of (1) detecting, at a receiver end of the transmission system a status of a transmitted frame indicating o |
| 6515975 |
Fast forward power control during soft handoff |
February 4, 2003 |
| Disclosed is an apparatus for and method of increasing the stability of a CDMA cellular system using fast forward power control. This is accomplished by improving the relative power level synchronization of all the BTSs communicating with an MS in a handoff mode through the use of at |
| 6266529 |
Method for CDMA handoff in the vicinity of highly sectorized cells |
July 24, 2001 |
| A method for improved sector handoff within a sectorized communication cell utilizing a wireless communication systems. A sector handoff of a mobile radio telephone is performed in accordance with a first set of parameters if the mobile radio telephone is not in close proximity to a base |
| 6233455 |
Method for utilizing negative T--COMP to improve handoff reliability |
May 15, 2001 |
| A pre-determined negative constant is utilized in soft handoff mode to permit a new pilot signal to be added to an wireless phone's active set. The negative constant is combined with the weakest pilot signal in the active set and then compared to the new pilot signal strength which allow |
| 6188914 |
Method and apparatus for improving link performance and capacity of a sectorized CDMA cellular c |
February 13, 2001 |
| A system and method for improving link performance and network capacity of a CDMA network is described. In a preferred embodiment, at each sector site, antennas having a relatively narrow horizontal beamwidth are used as transmit antennas, while antennas having a relatively wide horizont |
| 6181738 |
Reverse link power control using a frame quality metric |
January 30, 2001 |
| When the frame rate changes from eighth rate to full rate, the power control process increases the .sup.E.sub.b /.sub.N.sub..sub.o target by .DELTA..sub.1. If the frame rate changes from full rate to eighth rate, the power control process decreases the .sup.E.sub.b /.sub.N.sub..sub.o |
| 6151512 |
Communication system having optimum resource arrangements in a multi-sectored environment and me |
November 21, 2000 |
| A configuration of base stations and sectors within cells of a CDMA wireless communication network provide greater call handling capacity. By optimally configuring sectors of a cell controlled by multiple base stations, fewer channel elements are required to implement the desired ser |
| 6075815 |
Symbol-energy-to-noise-density estimation in a QPSK modulated communication system |
June 13, 2000 |
| The process determines the I channel and Q channel components for each received soft value. The location of each soft value with respect to the fade line is determined using the I and Q channel components. These locations are averaged over a power control group duration to determine |
| 6073025 |
Base station power control during a soft hand-off |
June 6, 2000 |
| The base station controller monitors the reverse link frame error rate of all the base stations involved in a soft hand-off with a radiotelephone. The average reverse link frame error rates of these base stations are then computed and the lowest of the average error rates is found. The l |
| 5963870 |
Process for switching between IS-95 forward power control and fast forward power control |
October 5, 1999 |
| The power control process switches between IS-95 forward power control and fast forward power control using either speed or hand-off status information from the mobile radiotelephone. If the received information indicates either a slower speed or the number of communication links is |
| 5960349 |
Enhanced cellular layout for CDMA networks having six-sectored cells |
September 28, 1999 |
| An enhanced cellular layout for cellular networks having six-sectored cells is disclosed. In one embodiment, the cellular layout is implemented by rotating directional antennas located at each cell site of a triangular cellular layout of a six-sectored CDMA network clockwise or count |
| 5946621 |
Method of optimizing neighbor set during soft handoff of a mobile unit in a CDMA cellular enviro |
August 31, 1999 |
| System and method for optimally updating a neighbor set for use by a mobile unit during soft handoff of the mobile unit in a CDMA cellular telephone environment is disclosed. A two-step process is used to ensure that the individual neighbor sets of active set members are combined in a ma |
