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1. WO1996006490 - MULTI-BAND, MULTI-MODE SPREAD-SPECTRUM COMMUNICATION SYSTEM

Publication Number WO/1996/006490
Publication Date 29.02.1996
International Application No. PCT/US1995/010387
International Filing Date 15.08.1995
Chapter 2 Demand Filed 29.02.1996
IPC
H04B 1/40 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/-H04B13/123; Details of transmission systems not characterised by the medium used for transmission
38Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
40Circuits
H04B 1/69 2011.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/-H04B13/123; Details of transmission systems not characterised by the medium used for transmission
69Spread spectrum techniques
H04B 1/707 2011.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/-H04B13/123; Details of transmission systems not characterised by the medium used for transmission
69Spread spectrum techniques
707using direct sequence modulation
H04B 7/26 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
24for communication between two or more posts
26at least one of which is mobile
H04J 13/00 2011.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
13Code division multiplex systems
H04L 1/00 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1Arrangements for detecting or preventing errors in the information received
CPC
H04B 1/005
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
005adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
H04B 1/0057
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
005adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
0053with common antenna for more than one band
0057using diplexing or multiplexing filters for selecting the desired band
H04B 1/006
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
005adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
0053with common antenna for more than one band
006using switches for selecting the desired band
H04B 1/10
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
06Receivers
10Means associated with receiver for limiting or suppressing noise or interference ; induced by transmission
H04B 1/406
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
38Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
40Circuits
403using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency
406with more than one transmission mode, e.g. analog and digital modes
H04B 1/69
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
69Spread spectrum techniques
Applicants
  • OMNIPOINT CORPORATION [US/US]; 1365 Garden of the Gods Road Colorado Springs, CO 80907, US (AllExceptUS)
  • SMITH, Douglas, G. [US/US]; US (UsOnly)
  • DIXON, Robert, C. [US/US]; US (UsOnly)
  • VANDERPOOL, Jeffrey, S. [US/US]; US (UsOnly)
Inventors
  • SMITH, Douglas, G.; US
  • DIXON, Robert, C.; US
  • VANDERPOOL, Jeffrey, S.; US
Agents
  • HEMMINGER, Steven, D. ; Lyon & Lyon Suite 4700 633 West Fifth Street Los Angeles, CA 90071-2066, US
Priority Data
08/293,67118.08.1994US
08/482,29207.06.1995US
08/483,51407.06.1995US
08/485,98707.06.1995US
PCT/US94/1246431.10.1994US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) MULTI-BAND, MULTI-MODE SPREAD-SPECTRUM COMMUNICATION SYSTEM
(FR) SYSTEME DE TELECOMMUNICATION A SPECTRE ETALE A BANDES MULTIPLES ET A MODES MULTIPLES
Abstract
(EN)
A technique for spread-spectrum communication (figs. 1, 3, 12 and 14) which uses more than one mode and more than one frequency band. Selectable modes include narrowband mode and spread-spectrum mode, or cellular mode and microcellular mode. A mode select switch (104) selects between a narrowband modulator (113) and a spread spectrum modulator (111). Selectable frequency bands include both licensed and unlicensed frequency bands, particularly frequency bands including the 902-928 MHz, 1850--1990 MHz, and 2.4--2.4835 GHz frequency bands. Spread-spectrum communication channels are 10 MHz or less in width. The frequency band onto which spread-spectrum signals are encoded may be changed upon a change in environment or other control trigger, such as establishment or deestablishment of communication with a private access network. A multi-band transmitter (fig. 12) comprises a single frequency synthesizer and a frequency source (606) (e.g., a local oscillator), coupled to a selectable band pass filter (619, 620). A multi-band receiver (fig. 14) capable of monitoring one or more frequency bands comprises bank of bandpass filters (714, 715) and a demodulator comprising a single frequency synthesizer and a frequency source (721).
(FR)
L'invention concerne une technique de télécommunication (fig. 1, 3, 12, et 14) à spectre étalé qui utilise plus d'un mode et plus d'une bande de fréquence. Parmi les modes que l'on peut sélectionner, il y a le mode en bande étroite, le mode en spectre étalé, le mode cellulaire et le mode microcellulaire. Un commutateur de mode (104) permet de sélectionner entre un modulateur à bande étroite (113) et un modulateur à spectre étalé (111). Parmi les bandes de fréquences que l'on peut sélectionner, il y a celles qui sont attribuées et celles qui ne le sont pas, en particulier les bandes de fréquence 902-928 MHz, 1850-1990 MHz et 3,4-2,4835 GHz. Les canaux de télécommunication à spectre étalé présentent une largeur de 10 MHz ou moins. La bande de fréquences dans laquelle sont codés les signaux à spectre étalé peut être changée par une modification de l'environnement ou déclenchement d'autres commandes, comme par exemple la mise en communication avec un réseau d'accès privé ou la coupure de cette communication. Un émetteur à bandes multiples (fig. 12) comprend une source de fréquences unique (606) (par exemple un oscillateur local), couplée à un filtre à bande passante (619, 620) modulable. Un récepteur à bandes multiples (fig. 14) capable de surveiller une ou plusieurs bandes de fréquences comprend des batteries de filtres à bande passante (714, 715) et un démodulateur comprenant un seul synthétiseur de fréquences et une seule source de fréquences (721).
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