WO2001093475A1 - Service radio mobile fonctionnant sur un reseau de television cablee - Google Patents

Service radio mobile fonctionnant sur un reseau de television cablee Download PDF

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Publication number
WO2001093475A1
WO2001093475A1 PCT/US2001/004939 US0104939W WO0193475A1 WO 2001093475 A1 WO2001093475 A1 WO 2001093475A1 US 0104939 W US0104939 W US 0104939W WO 0193475 A1 WO0193475 A1 WO 0193475A1
Authority
WO
WIPO (PCT)
Prior art keywords
signals
cellular
catv
wireless
link
Prior art date
Application number
PCT/US2001/004939
Other languages
English (en)
Inventor
Dan Shklarsky
Harel Golombek
Original Assignee
Passover, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Passover, Inc. filed Critical Passover, Inc.
Priority to AU2001243160A priority Critical patent/AU2001243160A1/en
Priority to US10/296,042 priority patent/US20040166833A1/en
Publication of WO2001093475A1 publication Critical patent/WO2001093475A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N7/17309—Transmission or handling of upstream communications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/65—Arrangements characterised by transmission systems for broadcast
    • H04H20/76—Wired systems
    • H04H20/77—Wired systems using carrier waves
    • H04H20/78—CATV [Community Antenna Television] systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2381—Adapting the multiplex stream to a specific network, e.g. an Internet Protocol [IP] network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
    • H04N21/6118—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving cable transmission, e.g. using a cable modem
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
    • H04N21/6131—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via a mobile phone network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/615—Signal processing at physical level
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H04W88/085—Access point devices with remote components

Definitions

  • the invention relates to a new topology for cellular radio networks and the like, and a method which improves the in-building coverage and capacity of a cellular or mobile radio network.
  • the invention relates to an extension to conventional mobile radio networks using cable networks.
  • cable networks are merged into mobile radio networks to provide improved voice quality and coverage while enhancing network capacity.
  • cable TV networks are used to provide in-building access for mobile radio terminals, in a mobile radio network.
  • Mobile radio networks are conventional.
  • a cellular radio network is an example of such a network.
  • Cellular radio networks are characterized by geographically distributed network access points, each defining cells of the network.
  • the geographically distributed network access points are typically referred to as base stations BS or base transceiver stations BTS, and include transmission and reception equipment for transmitting signals to and receiving signals from mobile radio terminals (MT).
  • MT mobile radio terminals
  • the cells may be subdivided further, thus defining microcells.
  • MSC mobile switching center
  • MSC's may be linked together by a higher level entity which provides an interface to the public switched telephone network (PSTN), or may themselves have such a PSTN interface.
  • PSTN public switched telephone network
  • the conventional implementation of a cellular radio network has had some important limitations.
  • the cellular towers require an important amount of real estate, and are very unsightly.
  • cellular towers are expensive, and require real estate, it is economically feasible to include in a network only a limited number of them. Accordingly, the size of cells can be quite large, and it is therefore necessary to equip the mobile radio terminals with the ability to radiate at high-power so as to transmit radio signals strong enough for the geographically dispersed cellular towers to receive.
  • cellular radio networks as conventionally implemented is that the cellular antennas are typically located outside of buildings, even though it would be highly beneficial to provide cellular service inside buildings. The penetration of cellular signals for in- building applications requires high power sites, or additional sites or repeaters to overcome the inherent attenuation inherent with in-building penetration. Because the towers are located outside of buildings, it is difficult for mobile radio terminals to transmit signals strong enough to propagate effectively from inside of the building to outside of the building. Therefore, the use of mobile radio terminals inside buildings is usually complex and expensive.
  • the delivery of cellular signals directly to the subscriber's premises, by using the CATV network, allows reducing the reuse factor (either frequency or code) and hence brings an increase of an order of magnitude in the cellular network's available capacity. This is due to the fact that the propagation conditions are greatly improved by using the CATV as an access path inside buildings, instead of transmitting from outdoor towers.
  • each antenna node includes at least two transceivers.
  • each antenna node includes at least two transceivers.
  • each interface the CATV plant by using the conventional standard CATV frequencies (5-30MHz & 50-550MHz) for the delivery of telephone traffic.
  • the CATV network functions as an access element within the analog portion of the cellular network, namely in its RF propagation-radiation section.
  • the capabilities of existing CATV networks are substantially preserved, but the mobile radio terminal signals do not have to be modified. That is to say, the signals sent according to the mobile radio terminal communications protocol traverse the CATV network, without modification.
  • the radio frequencies and channel structures of the cellular and the CATV networks are different.
  • the CATV network is modified so as to permit the communication of the RF signals of the mobile radio network without modification.
  • a traditional CATV network is a two way network having a tree topology and including cables, amplifiers, signal splitters/combiners and filters.
  • the cables and signal splitters/combiners are not modified, but the other elements are.
  • the invention includes new components for a CATV system that permit multiband communication.
  • the modified components allow all types of signals (the CATV up and down signals and the Cellular voice + data up and down signals) to be carried by the network simultaneously in a totally uncoupled manner (any coupling can be a source of an intolerable cross interference).
  • CMCA Cable Mounted Cellular Antenna
  • the CMCA is a component which acts as transmit receive antenna for the cellular signals (the down link includes controlled attenuation) and as a cable input output unit for the cable network.
  • wireless RF signals are injected into the CATV network, directly, as is, without any frequency translation or any other protocol or format changes.
  • Most of the existing CATV video signals are already limited to frequencies under 750MHz (digital CATV goes up to 860 MHz) while cellular and PCS systems operate above this limit. Because of this, the different types of signals can coexist with the proper modification.
  • Fig. 1 shows an upgraded Cellular Cable Network (CCN) according to one embodiment of the invention.
  • Fig. 2 shows a simplified schematic view of a Cable Mount Cellular Antenna (CMCA) according to an embodiment of the invention.
  • Fig. 3 shows a simplified schematic view of a Cellular Transport Module (CETM) according to an embodiment of the invention.
  • CMCA Cable Mount Cellular Antenna
  • CETM Cellular Transport Module
  • FIG. 4 shows, in simplified schematic form, a Cellular Entrance Module (CEEM) according to an embodiment of the invention, DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS.
  • CEEM Cellular Entrance Module
  • Fig. 1 shows a Cellular Entrance Module (CEEM), a Cellular Transport Module (CETM), and a Cable Mount Cellular Antenna (CMCA).
  • CEEM is the interface between the Cellular network and the cable network. Signals from the BS entering at the CEEM are distributed through the cable network.
  • CETM transports the Cellular signal through the cable network.
  • the CETM is installed at any active point of the cable network, bypassing the trunk amplifiers, line extenders and distribution modules.
  • the CMCA is the interface between the upgraded cellular cable network and the cellular head-end (end user) unit at the customer premises.
  • CATV signals from the CATV head end 141 are carried out through an optical link to the optical node 142 and through coaxial cable to the distribution amplifier 143.
  • Cellular signals (both up-link and down-link) are carried to/from the BTS 101 to the CEEM 110 which functions as the interface of the cellular signal to the upgraded cellular cable network.
  • the CEEM 110 enable to combine both cellular and cable signal to be carried through the network.
  • the combined signals from the CEEM 110 are connected back to the distribution amplifier 143 and the combined cellular and cable signals are carried forward through the network to the subscriber premises.
  • CMCA A more detailed view of the CMCA is shown in Fig. 2.
  • the combined cellular and cable signals enter at the CATV outlet.
  • the cellular and cable signals are differentiated at the Network Coupling Duplexer (NCD).
  • the cellular antenna connected to the NCD transmits the cellular signals, to be received by the customer cellular unit.
  • the TV signals are connected to the TV set through the TV set outlet.
  • the combined cellular and cable signals, connected at the CATV outlet 131 are carried through the NCD 132.
  • the NCD 132 is a high pass/low pass filter that differentiates between the cellular signals to the CATV signals.
  • the CATV signals are carried through the TV set outlet 133 to the TV.
  • the cellular signals are carried to the cellular antenna 134 and transmitted to the customer cellular unit (not shown in the diagram).
  • the NCD 132 high pass filter carries out all the cellular frequencies from 824MHz (or 890MHz in GSM) to 2 GHz where the cutoff frequency is at 750MHz (or 860MHz in some CATV networks).
  • the NCD 132 law pass filter carries out all the CATV frequencies from 1 (5) to 750 MHz (or 860MHz).
  • Fig. 3 depicts the CETM.
  • the combined cellular and cable signals enter the CETM.
  • HP/LP high-pass / low-pass filter
  • the signals are distributed into two different channels; one channel carries the
  • CATV signals and the other carries the cellular signals.
  • the signals are combined again through the HP/LP to be carried through the network.
  • the combined cellular and cable signals enter at point 126 to the LP/HP duplexer 121.
  • the duplexers each differentiate between the
  • CATV signals and the cellular signals are carried through the LP filter to the Line extender 144 or trunk amplifier 145 (see Fig. 1).
  • the output signals from the line extender 144 are carried to an additional LP filter to be combined again with the cellular signals.
  • the Cellular signals are carried to/from the HP output to the cellular filter 122, the cellular filter differentiates between the up-link and down-link signals to be amplified by the amplifiers 123 to balance the power budget along the pass.
  • the cellular signals from the amplifiers 123 are connected to the HP/LP filters 125 via the fibers 124, to be combined with the CATV signals and carried on through the network.
  • Fig. 4 shows the CEEM.
  • the CEEM is the interface between the cellular and the cable signals.
  • Cellular signals from the BTS are carried through the CEEM and combined through the HP/LP to the cable signals to be carried through the network.
  • the CATV signals from the optical node 142 are connected to the CEEM, through point 136, directly to the distribution amplifier 143 (see Fig. 1).
  • the cellular signals to/from the BS are connected to the CEEM trough point 137 to the cellular filter 132.
  • the cellular filter differentiates between the up-link and down-link signals to be amplified by the amplifiers 133 to balance the power budget along the pass.
  • the cellular signals to/from the amplifiers 133 are connected to the HP/LP filters 135 via the cellular filters 134.
  • the output from the HP/LP filters 135 is transferred back to the distribution amplifier 143 (see Fig. 1) to be distributed through all the upgraded cellular cable network.
  • the use of the equipment and method described herein constitutes a method for enhancing the capacity of a mobile radio network. That is, the frequency (or code) reuse pattern of the network prevents the use of more than a fraction of the available spectrum in outdoor cells. With indoor cells accessed through the cellular cable network, the power of the transmitting mobile units indoors can be very low. This, coupled with the inherent attenuating effects that occur within buildings, combine to make it possible for a much more aggressive reuse pattern in indoor cells. [0041]
  • the various embodiments and aspects of the invention help overcome coverage and capacity constraints now faced by operators of mobile radio networks. By overcoming these coverage constrains, the cost of providing excellent radio coverage is reduced and service levels are improved.
  • CATV system operators will have a potential new source of income. New service packages are possible in which CATV and mobile radio terminal service are combined.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Selon l'invention, des éléments passifs d'un réseau de télévision câblée (141) transfèrent des signaux de réseau radio mobile (102), sans modification. Le réseau de télévision câblée (141) transporte à la fois des données de télévision et des données, comme auparavant, mais également des signaux cellulaires ou des signaux de stations émettrices/réceptrices de base (101). Un module d'entrée cellulaire CEEM (110) constitue une interface entre le terminal radiomobile et le réseau de télévision câblée (141). Etant donné que le réseau de télévision câblée (141) est modifié pour transporter des signaux radiomobiles, ces signaux peuvent être passés sans modification de leur format ou de leur fréquence.
PCT/US2001/004939 2000-05-25 2001-03-02 Service radio mobile fonctionnant sur un reseau de television cablee WO2001093475A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2001243160A AU2001243160A1 (en) 2000-05-25 2001-03-02 Mobile radio service over catv network
US10/296,042 US20040166833A1 (en) 2001-03-02 2001-03-02 Mobile radio service over catv network

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US20679400P 2000-05-25 2000-05-25
US60/206,794 2000-05-25

Publications (1)

Publication Number Publication Date
WO2001093475A1 true WO2001093475A1 (fr) 2001-12-06

Family

ID=22767995

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/004939 WO2001093475A1 (fr) 2000-05-25 2001-03-02 Service radio mobile fonctionnant sur un reseau de television cablee

Country Status (3)

Country Link
CN (1) CN1224201C (fr)
AU (1) AU2001243160A1 (fr)
WO (1) WO2001093475A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1486015A2 (fr) * 2002-02-20 2004-12-15 Passover, Inc. Fournisseur sans fil permettant de surveiller le segment catv
EP1956853A1 (fr) * 2007-02-08 2008-08-13 Nederlandse Organisatie voor Toegepast-Natuuurwetenschappelijk Onderzoek TNO Réseaux téléphoniques mobiles

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5953670A (en) * 1995-05-02 1999-09-14 Northern Telecom Limited Arrangement for providing cellular communication via a CATV network
US6112232A (en) * 1998-01-27 2000-08-29 Phasecom Ltd. Data communication device for CATV networks
US6192216B1 (en) * 1997-12-24 2001-02-20 Transcept, Inc. Remotely controlled gain control of transceiver used to inter-connect wireless telephones to a broadband network
US6212397B1 (en) * 1996-12-23 2001-04-03 Texas Instruments Incorporated Method and system for controlling remote multipoint stations

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5953670A (en) * 1995-05-02 1999-09-14 Northern Telecom Limited Arrangement for providing cellular communication via a CATV network
US6212397B1 (en) * 1996-12-23 2001-04-03 Texas Instruments Incorporated Method and system for controlling remote multipoint stations
US6192216B1 (en) * 1997-12-24 2001-02-20 Transcept, Inc. Remotely controlled gain control of transceiver used to inter-connect wireless telephones to a broadband network
US6112232A (en) * 1998-01-27 2000-08-29 Phasecom Ltd. Data communication device for CATV networks

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1486015A2 (fr) * 2002-02-20 2004-12-15 Passover, Inc. Fournisseur sans fil permettant de surveiller le segment catv
EP1486015A4 (fr) * 2002-02-20 2005-08-31 Passover Inc Fournisseur sans fil permettant de surveiller le segment catv
EP1956853A1 (fr) * 2007-02-08 2008-08-13 Nederlandse Organisatie voor Toegepast-Natuuurwetenschappelijk Onderzoek TNO Réseaux téléphoniques mobiles

Also Published As

Publication number Publication date
CN1430830A (zh) 2003-07-16
CN1224201C (zh) 2005-10-19
AU2001243160A1 (en) 2001-12-11

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