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1. WO1999003213 - SPOT BEAM SELECTION IN A MOBILE SATELLITE COMMUNICATION SYSTEM

Publication Number WO/1999/003213
Publication Date 21.01.1999
International Application No. PCT/US1998/014583
International Filing Date 13.07.1998
IPC
H04B 7/185 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
14Relay systems
15Active relay systems
185Space-based or airborne stations
H04B 7/204 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
14Relay systems
15Active relay systems
204Multiple access
H04B 7/212 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
14Relay systems
15Active relay systems
204Multiple access
212Time-division multiple access
H04W 76/02 2009.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
76Connection management
02Connection set-up
H04W 74/00 2009.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
74Wireless channel access, e.g. scheduled or random access
H04W 84/06 2009.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
84Network topologies
02Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN  or WLL
04Large scale networks; Deep hierarchical networks
06Airborne or Satellite Networks
CPC
H04B 7/18517
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
14Relay systems
15Active relay systems
185Space-based or airborne stations; ; Stations for satellite systems
1851Systems using a satellite or space-based relay
18517Transmission equipment in earth stations
H04B 7/18539
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
14Relay systems
15Active relay systems
185Space-based or airborne stations; ; Stations for satellite systems
1853Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
18539Arrangements for managing radio, resources, i.e. for establishing or releasing a connection
H04B 7/18543
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
14Relay systems
15Active relay systems
185Space-based or airborne stations; ; Stations for satellite systems
1853Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
18539Arrangements for managing radio, resources, i.e. for establishing or releasing a connection
18543for adaptation of transmission parameters, e.g. power control
H04B 7/18558
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
14Relay systems
15Active relay systems
185Space-based or airborne stations; ; Stations for satellite systems
1853Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
18558Arrangements for managing communications, i.e. for setting up, maintaining or releasing a call between stations
H04B 7/18567
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
14Relay systems
15Active relay systems
185Space-based or airborne stations; ; Stations for satellite systems
1853Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
18567Arrangements for providing additional services to the basic mobile satellite telephony service
H04B 7/18571
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
14Relay systems
15Active relay systems
185Space-based or airborne stations; ; Stations for satellite systems
1853Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
18569Arrangements for system physical machines management, i.e. for construction operations control, administration, maintenance
18571for satellites; for fixed or mobile stations
Applicants
  • HUGHES ELECTRONICS CORPORATION [US]/[US]
Inventors
  • NOERPEL, Anthony, R.
  • JOSHI, Chandra
  • PARR, Michael
  • GAO, Zhengping
  • DEMERS, Stephanie
Agents
  • CROOK, John A.
Priority Data
60/052,44314.07.1997US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) SPOT BEAM SELECTION IN A MOBILE SATELLITE COMMUNICATION SYSTEM
(FR) SELECTION DE FAISCEAU PONCTUEL DANS UN SYSTEME DE COMMUNICATION MOBILE PAR SATELLITE
Abstract
(EN) An access terminal for initiating spot beam selection in a satellite communication system, in which the access terminal includes a receiver for measuring the received signal strength (RSS) of a multiplicity of radio frequency communication spot beam links. The access terminal is further provided with a microcontroller for comparing the received signal strengths from each of the multiplicity of spot beams to initiate information communication via a communication channel of the satellite communication system. In a described embodiment, the controller of the access terminal compares seven spot beam links to determine whether to initiate information communication with one of the seven spot beams received. Additionally, a memory coupled to the controller of the access terminal is used for storing spot beam identification information including the spot beam links assigned to the access terminal via the satellite communication system. The selection procedure employed by the system and method described facilitate a rapid selection of an appropriate spot beam identified from the multiplicity of radio frequency spot beam links received at a mobile access terminal.
(FR) L'invention concerne un terminal d'accès destiné à amorcer la sélection d'un faisceau ponctuel dans un système de communication par satellite, dans lequel le terminal d'accès comprend un récepteur destiné à mesurer l'intensité du signal reçu (RSS) d'une multiplicité de liaisons de communication radiofréquence par faisceau ponctuel. Le terminal d'accès comprend également un microcontrôleur destiné à comparer les intensités des signaux reçus provenant de chacun des faisceaux ponctuels pour amorcer la transmission d'informations par un canal de communication du système de communication par satellite. Dans un mode de réalisation décrit, le contrôleur du terminal d'accès compare cette liaison par faisceau ponctuel afin de déterminer quand amorcer la transmission d'informations au moyen d'un des sept faisceaux ponctuels reçus. De plus, une mémoire couplée au contrôleur du terminal d'accès est utilisée pour stocker les informations d'identification des faisceaux ponctuels renfermant les liaisons par faisceaux ponctuels attribuées au terminal d'accès par l'intermédiaire du système de communication par satellite. La procédure de sélection employée par le système et le procédé décrits facilitent une sélection rapide d'un faisceau ponctuel approprié identifié parmi la multiplicité de liaisons par faisceau ponctuel à radiofréquence, reçu par un terminal d'accès mobile.
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