(19) United States
`(12) Patent Application Publication (10) Pub. No.: US 2006/0111149 A1
`Chitrapu et al.
`(43) Pub. Date:
`May 25, 2006
`
`US 200601 11149A1
`
`(54)
`
`SYSTEMAND METHOD UTILIZING
`DYNAMIC BEAM FORMING FOR
`WIRELESS COMMUNICATION SIGNALS
`
`(75)
`
`Inventors: Prabhakar R. Chitrapu, Blue Bell, PA
`(US); Steven Jeffrey Goldberg,
`Downingtown, PA (US)
`
`Correspondence Address:
`VOLPE AND KOENIG, PC.
`DEPT. ICC
`UNITED PLAZA, SUITE 1600
`30 SOUTH 17TH STREET
`PHILADELPHIA, PA 19103 (US)
`Assignee: InterDigital Technology Corporation,
`Wilmington, DE (US)
`
`Appl. No.:
`
`11/315,452
`
`Filed:
`
`Dec. 22, 2005
`
`(73)
`
`(21)
`(22)
`
`Related U.S. Application Data
`(63) Continuation of application No. 10/305.595, filed on
`Nov. 27, 2002, now Pat. No. 6,999,795.
`(60) Provisional application No. 60/334,309, filed on Nov.
`29, 2001. Provisional application No. 60/334,226,
`filed on Nov. 29, 2001. Provisional application No.
`60/334,369, filed on Nov. 29, 2001.
`
`Publication Classification
`
`(51) Int. Cl.
`(2006.01)
`H04O 7/20
`(52) U.S. Cl. ..................................... 455/562.1; 455/4.56.1
`
`ABSTRACT
`(57)
`The present invention relates to a method and system using
`dynamic beam forming for wireless communication signals
`in a wireless network. Base stations and/or UEs are provided
`with antenna systems having a range of beam forming
`selections. Relative base station and UE locations are one
`type of criteria used to make beam forming decisions.
`
`
`
`IPR2024-00137
`Petitioners' Ex. 1003
`
`Ex.1003.00001
`
`

`

`Patent Application Publication May 25, 2006 Sheet 1 of 8
`
`US 2006/0111149 A1
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`
`Ex.1003.00002
`
`

`

`Patent Application Publication May 25, 2006 Sheet 2 of 8
`
`US 2006/0111149 A1
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`Ex.1003.00003
`
`

`

`Patent Application Publication May 25, 2006 Sheet 3 of 8
`
`US 2006/0111149 A1
`
`TRIGGER FOR CELL REALLOCATION
`(eg. NEW TRAFFIC LOAD, NETWORK
`MALFUNCTION)
`
`AFFECTED BASE STATIONS
`BEGINNEGOTATON PROCESS
`
`BASE STATIONS REFOCUS THE RADIO
`BEAMS USING ANTENNA ARRAYS
`
`
`
`Ex.1003.00004
`
`

`

`Patent Application Publication May 25, 2006 Sheet 4 of 8
`
`US 2006/0111149 A1
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`
`Ex.1003.00005
`
`

`

`Patent Application Publication May 25, 2006 Sheet 5 of 8
`
`US 2006/0111149 A1
`
`ESTMATION OF UE LOCATION
`
`TRANSMISSION OF UE LOCATION
`INFORMATION TO NETWORK
`
`BEAMFORMING DETERMINATION BY THE
`NETWORK BASED ON UE LOCATION DATA
`
`
`
`BEAM FORMING
`
`
`
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`
`
`
`
`
`FG, 6
`
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`FG, 8
`
`Ex.1003.00006
`
`

`

`Patent Application Publication May 25, 2006 Sheet 6 of 8
`
`US 2006/0111149 A1
`
`
`
`s
`
`Ex.1003.00007
`
`

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`Patent Application Publication May 25, 2006 Sheet 7 of 8
`
`US 2006/0111149 A1
`
`
`
`
`
`Ex.1003.00008
`
`

`

`Patent Application Publication May 25, 2006 Sheet 8 of 8
`
`US 2006/0111149 A1
`
`
`
`HANDOVER CONSIDERATION PROCESS
`TRIGGERED BY (UE LOCATION, OR UE
`SIGNAL. QUALITY, OR SERVING BASE STATION
`LOAD, OR UE QoS NEEDS)
`
`SERVING BASE STATION DETERMINES
`A LIST OF CANDIDATE TARGET BASE
`STATIONS AND NEGOTATES HANDOVER
`FEASIBILITY, INCLUDING BEAMFORMING
`CAPABILITY
`
`SERVING BASE STATION DETERMINES
`THE TARGET BASE STATION AND
`EXECUTES HANDOVER OR MANTAINS
`COMMUNICATION THROUGH REFOCUSING BEAM
`
`FG,
`
`Ex.1003.00009
`
`

`

`US 2006/011 1149 A1
`
`May 25, 2006
`
`SYSTEMAND METHOD UTILIZING DYNAMIC
`BEAM FORMING FOR WIRELESS
`COMMUNICATION SIGNALS
`
`CROSS REFERENCE TO RELATED
`APPLICATION(S)
`0001. This application is a continuation of co-pending
`U.S. application Ser. No. 10/305.595, filed Nov. 27, 2002
`and claims priority from co-pending U.S. application Ser.
`No. 10/305,740, filed Nov. 27, 2002; co-pending U.S. appli
`cation Ser. No. 10/305,821, filed Nov. 27, 2002 and U.S.
`provisional application No. 60/334,309, filed Nov. 29, 2001,
`U.S. provisional application No. 60/334.226, filed Nov. 29,
`2001 and U.S. provisional application No. 60/334,369, filed
`Nov. 29, 2001, which are all incorporated by reference as if
`fully set forth.
`
`FIELD OF INVENTION
`0002 The present invention relates to the field of wireless
`communications. More specifically, the present invention
`relates to a method and system using dynamic beam forming
`for wireless communication signal transmissions and/or
`receptions in a wireless network.
`BACKGROUND
`0003 Wireless telecommunication systems are well
`known in the art. Conventionally, a base station will provide
`wireless communication for many Subscriber units. Base
`stations will typically handle multiple communications with
`Subscriber systems concurrently. One measure of base sta
`tion capacity is the maximum number of concurrent com
`munications it can Support which is a factor determined by
`Such things as available power and bandwidth.
`0004 Since not all subscribers communicate with the
`base station at the same time, a base station can provide
`wireless service to a great many Subscribers beyond its
`capacity for concurrent communications. If the maximum
`number of concurrent communications for a base station are
`being conducted, an attempt to establish a further commu
`nication will result in an indication of service unavailability,
`Such as a system busy signal.
`0005 Service coverage by a base station is not only
`limited to its capacity for handling concurrent communica
`tions, but is also inherently limited to a specific geographic
`area. A base station's geographic range is typically defined
`by the location of the base stations antenna system and the
`power of the signal broadcast by the base station.
`0006.
`In order to provide wireless service over an expan
`sive geographic area, a network system is conventionally
`provided with multiple base stations. Each base station has
`its antenna system selectively physically located to provide
`coverage over a specific portion of the total geographic area
`which is covered by the system. Such systems readily
`provide wireless service for mobile subscriber units which
`can travel out of the range of one base station and into the
`range of another base station without interruption of an
`ongoing wireless communication. In Such networks, the
`geographic area covered by a base station is commonly
`referred to as a cell and telephone communication services
`provide are commonly called cellular telephone services.
`0007 Systems constructed in accordance with current
`specifications of the 3rd Generation Partnership Program
`
`(3GPP) are designed to provide such service. In such sys
`tems, a typical transmitting base station is known as a "node
`b” and a typical subscriber unit, mobile or otherwise, is
`known as a User Equipment (UE).
`0008. In designing a telecommunication system to cover
`a specific geographic area, the geographic area may be
`partitioned into a predefined pattern of cells. For example as
`illustrated in FIG. 1A, hexagonal-shape cells can be defined
`so that the cells cover the entire geographic area in a
`honeycomb pattern. In Such a system, each cell can have a
`base station which has an antenna at the center of the cell to
`provide 360° coverage. Although a map of cell coverage
`may be designed without any overlapping areas, in practice
`as shown in FIG. 1B, the transmission beams, shown in
`phantom, from base station antennas of adjacent cells do
`overlap. This overlap of beam coverage enables “handover
`of a communication being conducted by a mobile UE from
`one base station to another as the mobile UE travels from
`one cell to another. However, an overlapping base station
`signal contributes to interference of a signal received by a
`UE from a different base station when the UE is located in
`the overlap area.
`0009 For a variety of reasons, cells may be defined of
`various non-uniform shapes. Directional antennas, phased
`array antennas or other types of antenna systems can be
`provided so that a beam from a base station antenna for
`transmission and/or reception covers a particular geographic
`area of a specific shape and size. As illustrated by base
`station BS in FIG. 1B, the use of directional antennas or
`phased antenna arrays enables a base station antenna to be
`located at the edge of a cell in order to provide a shaped
`beam covering the cell. This can have advantages in better
`utilization of power and avoidance of creating interference
`outside the cell, in contrast with merely placing a monopole
`antenna on the edge of a cell and transmitting a 360°
`communication beam.
`0010 Unlike wireless communication systems which
`only serve stationary Subscriber units, systems designed to
`communicate with mobile users have much more complex
`usage patterns since service to a mobile UE can normally be
`provided by any base station within the system. Accordingly,
`a particular base station may find its capacity being fully
`utilized by mobile UEs entering its cell from other cells.
`0011. The inventors have recognized that the base station
`and associated antenna systems may be dynamically used to
`reconfigure base station transmission and/or reception
`beams in response to actual use of the wireless system. This
`can result in dynamically changing overall cell coverage to
`more readily meet service demands and, thus, better avoid
`attempted communications being met with a network busy
`signal. This can also result in “smart’ handover to avoid
`communication degradation when a UE moves from one cell
`to another.
`0012 To implement dynamic beaming forming, the
`inventors have recognized that data generated by conven
`tional means which identifies the geographic location of a
`mobile UE, such as using available Global Positioning
`Satellite (GPS) systems or a base station triangulation tech
`nique, can be advantageously used in the dynamic operation
`of base station antenna systems.
`
`Ex.1003.00010
`
`

`

`US 2006/011 1149 A1
`
`May 25, 2006
`
`SUMMARY
`0013 A method of selectively directing base station RF
`communication signals in a wireless telecommunication
`system is provided. A base station conducts wireless RF
`communications with a plurality of user equipments (UES).
`An estimated location of a UE is determined. Relative
`location data is then determined using the estimated UE
`location and a known location of a base station antenna
`system. Beam forming criteria is calculated based in part on
`the relative location data. A directed beam is formed for RF
`communication signals between the UE and the base station
`antenna system based on the calculated beam forming
`criteria Such that the directed beam encompasses the esti
`mated location of the UE.
`0014. The determining of location data of an estimated
`location of a UE may be performed by telecommunication
`system triangulation of UE transmitted signals received by
`one or more base stations. Alternatively, or in combination
`therewith, the determining of location data of an estimated
`location of a UE may be performed by the UE, such as by
`the UE using a Global Positioning Satellite system, and the
`data is transmitted from the UE to a base station.
`0.015 The calculating beam forming criteria preferably
`includes calculating transmission beam forming criteria
`based in part on the relative location data. The beam forming
`preferably includes forming a directed transmission beam of
`base station RF communication signals transmitted from
`said base station antenna system based on the calculated
`transmission beam forming criteria Such that the directed
`transmission beam encompasses the estimated location of
`the UE. Alternatively, or in addition, the calculating beam
`forming criteria may include calculating reception beam
`forming criteria based in part on the relative location data
`and the beam forming may include forming a directed
`reception beam for UE RF communication signals received
`by the base station antenna system based on the calculated
`reception beam forming criteria Such that the directed recep
`tion beam encompasses the estimated location of the UE.
`0016 Preferably, an estimated location is determined for
`a plurality of UEs within a specified geographic range of the
`base station antenna system. Relative location data of each
`UE is then determined using the estimated UE location and
`the known location of the base station antenna system.
`Transmission beam forming criteria is calculated based in
`part on the determined relative location data of at least first
`and second UEs. A directed transmission beam of base
`station RF communication signals for the first UE based on
`the calculated transmission beam forming criteria is formed
`and transmitted from the base station antenna system Such
`that the directed transmission beam encompasses the esti
`mated location of the first UE. A directed transmission beam
`of base station RF communication signals for the second UE
`based on the calculated transmission beam forming criteria
`is formed and transmitted from the base station antenna
`system such that the directed transmission beam encom
`passes the estimated location of the second UE. One directed
`transmission beam of base station RF communication sig
`nals for both the first and second UEs may be formed and
`transmitted Such that it encompasses the estimated locations
`of both the first UE and the second UE. Alternatively, a first
`directed transmission beam of base station RF communica
`tion signals for the first UE is formed and transmitted and a
`
`second directed transmission beam of base station RF com
`munication signals for the second UE is formed and trans
`mitted Such that the second directed transmission beam has
`a different direction than the first directed transmission
`beam.
`0017 Preferably, the calculating transmission beam
`forming criteria is based in part on comparative signal to
`noise ratio (SNR) estimation. The signal to noise ratio
`(SNR) of forming one directed transmission beam of base
`station RF communication signals for both first and second
`UEs is preferably be estimated. The signal to noise ratio
`(SNR) of forming a first directed transmission beam of base
`station RF communication signals for the first UE and a
`second directed transmission beam of base station RF com
`munication signals for said second UE that has a different
`direction than the first directed transmission beam is pref
`erably estimated. Then the estimated SNRs are compared to
`determine if the calculated transmission beam forming cri
`teria is to produce one or more directed transmission beams.
`0018 Preferably, a phased antenna array system is used
`as the base station antenna system and transmission beam
`forming criteria is calculated by estimating an area of beam
`coverage A. as a function of RF phase (p and transmission
`power P Such that phase (p and transmission power P are
`selected so the relative location of the UE is within A.
`The relative location data of the UE can be given in the form
`(0. d), where 0 represents the angle of the UE from a 0
`degree reference of the base station antenna system and d
`represents the UE's distance from the base station antenna
`system location. The antenna system may have a plurality of
`modes M which provide different shapes of beams for the
`same phase and power and transmission beam forming
`criteria may then be calculated by estimating an area of
`beam coverage A, as a function F of phase (p, transmis
`sion power P and antenna system mode M. Preferably, the
`antenna system has at least two modes M which provide
`wide and narrow shapes of transmission beams, respectively
`for the same phase and power. The transmission beam
`forming criteria can be calculated by estimating a beam
`direction 0
`as a function f of phase, 6-f(p) So that
`A-F(f(0), P. M) and 0
`is selected based on 0
`and P and M are selected base on d.
`0019. Where an estimated location is determined for a
`plurality of UEs, preferably reception beam forming criteria
`is calculated based in part on the determined relative loca
`tion data of at least first and second of UEs. A directed
`reception beam for RF communication signals of the first
`UE received by the base station antenna system is formed
`based on the calculated reception beam forming criteria Such
`that the directed reception beam encompasses the estimated
`location of the first UE. A directed reception beam for RF
`communication signals of the second UE received by the
`base station antenna system is formed based on the calcu
`lated reception beam forming criteria such that the directed
`reception beam encompasses the estimated location of said
`second UE. One directed reception beam for RF communi
`cation signals of both the first and second UEs may be
`formed Such that it encompasses the estimated locations of
`the first UE and the second UE. Alternatively, a first directed
`reception beam for RF communication signals of the first
`UE is formed such that the first directed beam encompasses
`the estimated location of the first UE and a second directed
`reception beam for RF communication signals of the second
`
`Ex.1003.00011
`
`

`

`US 2006/011 1149 A1
`
`May 25, 2006
`
`UE is formed such that the second directed beam encom
`passes the estimated location of the second UE and has a
`different direction than the first directed reception beam.
`0020 Preferably, reception beam forming criteria calcu
`lation is based in part on comparative signal to noise ratio
`(SNR) estimation. Signal to noise ratio (SNR) of forming
`one directed reception beam for RF communication signals
`of both first and second UEs is estimated. Signal to noise
`ratio (SNR) of forming a first directed reception beam for RF
`communication signals of the first UE and a second directed
`reception beam for RF communication signals of the second
`UE that has a different direction than the first directed
`reception beam is estimated. The estimated SNRs are then
`compared to determine if the calculated reception beam
`forming criteria is to produce one or more directed reception
`beams.
`0021 Where a phased antenna array system is used as the
`base station antenna system, reception beam forming criteria
`is preferably calculated by estimating an area of beam
`coverage Abeam as a function of RF phase (p such that phase
`cp is selected so the relative location data (0, d) of the UE is
`within A. Where the antenna system has a plurality of
`modes M which provide different shapes of beams for the
`same phase, reception beam forming criteria may be calcu
`lated by estimating an area of beam coverage A as a
`function F of phase (p and antenna system mode M. Recep
`tion beam forming criteria is preferably calculated by esti
`mating a beam direction 0
`as a function f of phase,
`Obean=f(p) so that Asean-F(f'(0bean), M) and Obean is
`selected based on 0 and M is selected base on d.
`0022. A preferred base station has an RF module and an
`associated antenna array system. A beam former is opera
`tively associated with the RF module to form a desired beam
`within a range of beams of which the antenna array system
`is capable. A geolocation processor is coupled to the beam
`former that is configured to process UE geolocation data
`relative to data of a location of the base stations antenna
`array System and output selected control parameters to the
`beam former. The beam former controls the RF module to
`transmit or receive communication data for a selected UE in
`a shaped beam that encompasses an estimated location of the
`selected UE where geolocation data which corresponds to
`the estimated location of the selected UE is processed by the
`geolocation processor. Preferably, the geolocation processor
`is configured to calculate transmission beam forming param
`eters by estimating an area of transmission beam coverage
`A as a function of RF phase (p and transmission power P
`Such that phase (p and transmission power P are selected so
`the relative location data (0, d) of the selected UE is within
`A. Preferably, the antenna system has a plurality of
`modes M which provide different shapes of beams for the
`same phase and power and then the geolocation processor is
`configured to calculate transmission beam forming param
`eters as a function of phase (p, transmission power P and
`antenna system mode M and to output parameters to the
`beam former representing a selected combination of phase (p,
`transmission power Pandantenna system mode M to control
`transmission beam formation.
`0023 Alternatively, or in addition, the geolocation pro
`cessor is configured to calculate reception beam forming
`parameters by estimating an area of reception beam cover
`age as a function of RF phase such that phase is selected so
`
`the relative location data of the selected UE is within the
`area of reception beam coverage. Where the antenna system
`has a plurality of reception modes which provide different
`shapes of reception beams for the same phase, the geoloca
`tion processor is configured to calculate reception beam
`forming parameters as a function of phase and antenna
`system reception mode and to output parameters to the beam
`former representing a selected combination of phase and
`antenna system reception mode to control reception beam
`formation.
`0024 Preferably, the RF module has the capacity to
`provide more than one transmission beam Such that each
`transmission beam is capable of carrying communication
`signals for a separate set of UES. In Such case, the beam
`former is operatively associated with the RF module to form
`a set of desired transmission beams within a range of
`transmission beams which the antenna array system is
`capable of producing. The geolocation processor is then
`configured to calculate transmission beam forming param
`eters by estimating a set of areas of transmission beam
`coverage based on relative location data (0. d) of each UE
`of a plurality of selected UEs, where 0. represents the angle
`of the UE, from a 0 degree reference of the base station
`antenna system and d, represents the distance of the UE
`from the base station antenna system location, as a function
`of RF phase (p and transmission power P such that phase (p
`and transmission power P are selected so the relative loca
`tion data (0, d) of each UE of a plurality of selected UEs,
`is within one area of the set of areas of transmission beam
`coverage. Where the antenna system has a plurality of
`modes M which provide different shapes of beams for the
`same phase and power, the geolocation processor is prefer
`ably configured to calculate transmission beam forming
`parameters as a function of phase (p, transmission power P
`and antenna system mode M and to output parameters to the
`beam former representing a set of selected combination of
`phase (p, transmission power P and antenna system mode M
`to control transmission beam formation.
`0025. Alternatively, or in addition, the RF module has the
`capacity to provide more than one reception beam Such that
`each reception beam is capable of carrying communication
`signals for a separate set of UES. In Such case, the beam
`former is operatively associated with the RF module to form
`a set of desired reception beams within a range of reception
`beam capacity of the antenna array System. The geolocation
`processor is then configured to calculate reception beam
`forming parameters by estimating a set of areas of reception
`beam coverage based on relative location data (0. d) of each
`UE of a plurality of selected UEs, where 0, represents the
`angle of the UE, from a 0 degree reference of the base station
`antenna system and d represents the distance of the UE
`from the base station antenna system location, as a function
`of RF phase (p such that phase p is selected so the relative
`location data (0. d) of each UE of a plurality of selected
`UEs, is within one area of the set of areas of reception beam
`coverage. Where the antenna system has a plurality of
`modes M which provide different shapes of beams for the
`same phase, the geolocation processor is preferably config
`ured to calculate reception beam forming parameters as a
`function of phase (p and antenna system mode M and to
`output parameters to the beam former representing a set of
`selected combination of phase (p and antenna system mode
`M to control reception beam formation.
`
`Ex.1003.00012
`
`

`

`US 2006/011 1149 A1
`
`May 25, 2006
`
`0026. A wireless telecommunication system is con
`structed by providing a plurality of Such base stations and a
`plurality of mobile user equipments (UEs). Preferably, each
`UE includes an RF module that has an associated antenna.
`The UEs may have a geolocation processor that is config
`ured to determine current UE geolocation data using a global
`positioning satellite (GPS) system which data is transmitted
`from the UE RF module antenna for use by the base stations.
`Each UE may include a beam former operatively associated
`with the UE RF module to form a desired beam within a
`range of beams which the UE antenna array System is
`capable of producing. In Such case, a geolocation processor
`is coupled to the UE beam former that is configured to
`process UE geolocation data of an estimated UE location
`relative to data of the known location of a selected base
`station and output selected control parameters to the beam
`former. The UE beam former controls the UE RF module to
`transmit or receive communication data for the selected base
`station in a shaped beam that encompasses the known
`location of the selected base station where UE geolocation
`data relative to the known location of the selected base
`station is processed by the UE geolocation processor.
`0027. The UE geolocation processor is preferably con
`figured to calculate transmission beam forming parameters
`by estimating an area of transmission beam coverage A.
`as a function of RF phase (p and transmission power P Such
`that phase (p and transmission power P are selected so
`relative location data of the estimated UE location relative to
`the known location of the selected base station is within
`Abeam. Relative location data of the estimated UE location
`relative to the known location of the selected base station
`can be represented as (0. d), where 0 represents the angle of
`the selected base station from a 0 degree reference of the
`estimated UE location and d represents the distance between
`the estimated UE location and the known location of the
`selected base station.
`0028. The UE antenna system may have a plurality of
`modes M which provide different shapes of beams for the
`same phase and power. In Such case, the UE geolocation
`processor is preferably configured to calculate transmission
`beam forming parameters as a function of phase (p, trans
`mission power Pandantenna system mode M and to output
`parameters to the beam former representing a selected
`combination of phase (p, transmission power P and antenna
`system mode M to control transmission beam formation.
`0029. The UE geolocation processor may be configured
`to calculate reception beam forming parameters by estimat
`ing an area of reception beam coverage as a function of RF
`phase Such that phase is selected so the relative location data
`of the selected base station is within the area of reception
`beam coverage. Where the antenna system has a plurality of
`reception modes which provide different shapes of reception
`beams for the same phase, the geolocation processor is
`preferably configured to calculate reception beam forming
`parameters as a function of phase and antenna system
`reception mode and to output parameters to the beam former
`representing a selected combination of phase and antenna
`system reception mode to control reception beam formation.
`0030. Another aspect of the invention provides a method
`of selectively directing base station RF communication
`signals in a wireless telecommunication system wherein
`base stations which have overlapping transmission ranges
`
`conduct wireless RF communications with a plurality of user
`equipments (UES). An estimated location of each of a
`plurality of UEs that are to receive base station RF com
`munication signals is determined. The determining of an
`estimated location of a UE is preferably performed by
`telecommunication system triangulation of UE transmitted
`signals received by one or more base stations and/or per
`formed by a Global Positioning Satellite system at the UE.
`For each UE, each base station that has a transmission range
`which encompasses the estimated UE location is identified.
`For each UE, relative UE location data in relation to each
`identified base station is identified using the UE location
`data and predefined location data of the identified base
`station. For each identified base station, beam forming
`criteria is calculated based in part on the determined relative
`location data Such that each UE is assigned to a particular
`base station from which RF communication signals for that
`UE are to be transmitted. A set of directed beams of base
`station RF communication signals for the UEs is formed
`based on the calculated beam forming criteria such that for
`each said UE a directed beam having RF communication
`signals for that UE encompasses the estimated location of
`that UE. The process is repeated based on selected criteria to
`dynamically reconfigure base station transmission beams.
`0031 Communication data for each UE may have a
`quality of Service and a data rate requirement. In Such case,
`beam forming criteria is preferably calculated Such that each
`UE is assigned to a particular base station based in part on
`the quality of service and data rate requirements of the
`communication data to be transmitted to the UEs. Prefer
`ably, the relative location data of each UE includes estimated
`relative velocity data of the UE. In such case, beam forming
`criteria is preferably calculated such that each UE is
`assigned to a particular base station based in part on both the
`relative location data corresponding to the estimated UE
`locations and the relative estimated velocity data of the UEs.
`0032. The method to dynamically reconfigure base sta
`tion transmission beams is preferably repeated based on a
`selected type of:
`0033 a. change in relative location data corresponding to
`the estimated UE locations and the relative estimated veloc
`ity data of the UEs,
`0034) b. change in the quality of service and/or data rate
`requirements of the communication data to be transmitted to
`the UEs, and/or
`0035) c. base station failure.
`0036) A preferred wireless telecommunication system to
`dynamically reconfigure base station transmission beams
`includes a plurality of base stations for conducting wireless
`RF communications with a plurality of user equipments
`(UES). Each base station has an RF module and an associ
`ated antenna system that is located at a predetermined
`position and a geographic transmission range that overlaps
`with the transmission range of at least one other of said base
`stations. A beam former operatively associated with the RF
`module of each base station to form a set of desired beams
`within a range of beams which the base stations antenna
`array System is capable of producing. A network interface
`interconnects the base stations. The network interface and
`one or more associated geolocation processors are config
`ured to:
`
`Ex.1003.00013
`
`

`

`US 2006/011 1149 A1
`
`May 25, 2006
`
`0037 a. process UE geolocation data that corresponds to
`estimated locations of selected UEs relative to location data
`of antenna array systems of base stations having transmis
`sion ranges that encompass the estimated locations of the
`selected UEs,
`0038 b. apportion said selected UEs into groups, each
`group for maintaining communications with a selected base
`station of base stations having transmission ranges that
`encompass the estimated locations of the selected UEs, and
`0.039
`c. output selected parameters to the beam formers
`of base stations having transmission ranges that encompass
`the estimated locations such that a selected base station
`transmits communication data for each UE of the corre
`sponding group of apportioned UES in a shaped beam that
`encompasses the estimated location of the respective UE.
`0040 Communication data for each selected UE may
`have a quality