| Patent Number |
Title Of Patent |
Date Issued |
| 7269422 |
Wireless telecommunications with adjustment of uplink power level |
September 11, 2007 |
| A control node (26) of a radio access network (24) comprises a soft handover unit (62) and a power control unit (50). The soft handover unit (62) controls a soft handover procedure wherein a user equipment unit (30) has diversity in radio transmissions with plural radio base stations |
| 7151951 |
Using beamforming and closed loop transmit diversity in a multi-beam antenna system |
December 19, 2006 |
| In controlling a multi-beam antenna system for downlink wireless communication, beamforming and closed loop transmit diversity signaling are combined. Each beam signal is adjusted at the transmitter based on feedback from a wireless mobile communication station such that the signals |
| 6853333 |
Downlink load sharing by beam selection |
February 8, 2005 |
| The beam pattern associated with a multi-beam antenna array is adjusted if a first beam of the beam pattern is overloaded. A lobe of a second beam of the beam pattern can be steered away from a main lobe of the first beam. Also, if a user is located in an area covered by a second beam wh |
| 6791507 |
Feed network for simultaneous generation of narrow and wide beams with a rotational-symmetric an |
September 14, 2004 |
| An N-element rotational-symmetric array antenna can generate N fixed pencil-beams simultaneously with an omnidirectional beam. An N.times.N Butler matrix can be used to feed the array antenna, using fewer than N input ports of the Butler matrix to produce the pencil-beams. One or more |
| 6728228 |
Method and system for measuring and reporting received signal strength |
April 27, 2004 |
| In a Time Division Multiple Access based radio telecommunications system that employs downlink power control, received signal strength information is measured and reported. A downlink data signal is transmitted from a base station to a mobile station during a first timeslot. A control |
| 6697643 |
System and method for implementing a multi-beam antenna without duplex filters within a base sta |
February 24, 2004 |
| The present invention is directed to cellular systems and methods for providing a multi-beam antenna configuration within a base station without utilizing duplex filters. The multi-beam antenna configuration of the present invention produces overlaid beams in both the uplink and downlink |
| 6667712 |
Downlink load sharing by nulling, beam steering and beam selection |
December 23, 2003 |
| The beam pattern associated with a multi-beam antenna array is adjusted if a first beam of the beam pattern is overloaded. A lobe of a second beam of the beam pattern can be steered away from a main lobe of the first beam. Also, if a user is located in an area covered by a second beam wh |
| 6650910 |
Methods and apparatus in antenna diversity systems for estimation of direction of arrival |
November 18, 2003 |
| The present invention relates to radio systems and, more particularly, to a method and apparatus for receiving radio signals with the aid of beams generated by antenna assemblies. For each of the beams in a first of the antenna assemblies there is a beam in the second of the antenna asse |
| 6580910 |
Method and system for improving handoffs in cellular mobile radio systems |
June 17, 2003 |
| A method and system are disclosed for making inter-cell handoffs to a cell of a base station including a directional antenna array. The handoff algorithm includes taking into account uplink direction of arrival measurements in at least one candidate target base station, made on signa |
| 6577879 |
System and method for simultaneous transmission of signals in multiple beams without feeder cabl |
June 10, 2003 |
| A telecommunications system and method is disclosed for allowing a base station to simultaneously transmit signals in several beams of a multi-beam antenna configuration. Antenna pattern control is maintained by employing orthogonal polarization orientation for every other beam. For |
| 6539010 |
Downlink power control and adaptive beamforming for half-rate radiocommunication systems |
March 25, 2003 |
| A radiocommunication method and system which facilitates half-rate communications as well as downlink power control and selective beam transmission is described. Data associated with two terminals is multiplexed into a single timeslot. A first terminal's data occupies a first portion |
| 6529494 |
Downlink timeslot power control in a time division multiple access system |
March 4, 2003 |
| In a time division multiple access (TDMA) based cellular radio telecommunications system, system performance is improved by adjusting the transmit power associated with certain downlink signals during a corresponding timeslot, and in such a way that the power adjustment resembles tha |
| 6301238 |
Directional-beam generative apparatus and associated method |
October 9, 2001 |
| Directional beam generative apparatus, and an associated method, for a radio communication station forms directional antenna beam patterns for the communication of communication signals with remote communication stations operable in a TDMA communication system. Channels are allocated |
| 6072792 |
Power control apparatus, and an associated method, for TDMA transmitter |
June 6, 2000 |
| Power control apparatus and an associated method for a transmitting station operable in a TDMA communication system. The transmitting station includes transmitter branches for communicating communication signal bursts during selected time slots. Communication signal bursts transmitted up |
| 5952969 |
Method and system for determining the position of mobile radio terminals |
September 14, 1999 |
| The disclosure describes a novel Time Difference of Arrival (TDOA) method and system for determining the position of a mobile radio terminal within an associated mobile radio system, which is based on Time of Arrival (TOA) measurements, including a plurality of radio base stations, measu |
