WO2002030141A1 - Mobile base station system where the central unit and the antenna units are separated from each other - Google Patents

Mobile base station system where the central unit and the antenna units are separated from each other Download PDF

Info

Publication number
WO2002030141A1
WO2002030141A1 PCT/SE2001/002143 SE0102143W WO0230141A1 WO 2002030141 A1 WO2002030141 A1 WO 2002030141A1 SE 0102143 W SE0102143 W SE 0102143W WO 0230141 A1 WO0230141 A1 WO 0230141A1
Authority
WO
WIPO (PCT)
Prior art keywords
base station
central unit
station system
mobile base
antenna
Prior art date
Application number
PCT/SE2001/002143
Other languages
French (fr)
Inventor
Per Emanuelsson
Rolf Schuh
Original Assignee
Telia Ab (Publ)
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 Telia Ab (Publ) filed Critical Telia Ab (Publ)
Publication of WO2002030141A1 publication Critical patent/WO2002030141A1/en

Links

Classifications

    • 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 mobile base station system according to the introduction to the patent claim 1.
  • Micro cells which contain base station systems with comparatively small output power (micro bases) , has provided increased possibilities for such cell planning.
  • Micro cells are used at places with high traffic density, such as airports.
  • the building/extension of a mobile system requires big financial resources, so cell planning includes advanced optimization problems for the operator of the system.
  • the building/extensions of mobile systems which have been made lately mainly relates to the mobile systems of the so called second generation, preferably according to the standards GSM, D-AMPS and PDC.
  • GSM Global System for Mobile Communications
  • D-AMPS D-AMPS
  • PDC Packet Control Protocol
  • WLAN Wireless Local Area Network
  • An aim of the present invention is to wholly or partially eliminate above mentioned problems .
  • the invention relates to a mobile base station system including a central unit and at least one antenna unit.
  • the central unit includes means to function/operate according to at least two different optional access standards, in that at least a first one of said antenna units is detached from the central unit and located geographically separated from this.
  • connection devices which connect the central unit and the first antenna unit.
  • a system of the second generation for instance according to GSM/GPRS-standard, can function/operate beside a later mobile system, for instance according to a UMTS- standard, or a WLAN-standard, (for instance IEEE 802.11).
  • the above mentioned central unit can be utilized together with a number of different antenna units located separated from each other.
  • connection device preferably includes at least a pair of optical fibers, such as single mode fibers or multimode fibers for transmission/transfer of signals. This allows broadband information transmission between central unit and antenna unit.
  • connection device further includes a cable for power supply. If such a cable exists, no specific power supply need to be arranged at the place where the antenna unit is located.
  • the central unit preferably includes means to function/operate according to at least two of the following access standards: UMTS, GSM/GPRS, GSM/EDGE, HIPERLAN 2 and IEEE 802.11. This makes cost efficient upgrading of existing systems to newer standards possible.
  • the central unit utilizes, at execution of information transmission according to the at least two access standards, one for these common interface towards a mobile network (PLMN) , to which the base station system is connected.
  • PLMN mobile network
  • the central unit preferably includes a software based radio transmitter/radio transceiver (software radio) .
  • software radio software radio
  • Figure 1 shows a system according to the present invention.
  • Figure 2 shows an example of how the traffic in a group of cells, which is served by a common central unit according to the invention, gradually can be adapted to new future standards .
  • FIG. 1 shows a base station system 1 according to the present invention.
  • the system 1 includes a central unit 2 which has at least one radio unit with a receiver part 3 and a transmitter part 4.
  • the radio part is equipped to operate according to at least two different access standards.
  • the base station 1 can be called a multimode base station.
  • the base station then is said to operate in a plurality of modes, when it operates at the same time and optionally according to different access standards. It is advisable to utilize common interface for signaling 5 and data transmission 6 for the different modes. In that way a common basic network can be used for the different standards.
  • the system then can be said to have a transparent radio architecture.
  • the radio part 3, 4 can be realized as a hardware solution with different groups of integrated circuits for different standards.
  • a software based radio part is used where the major part of the signal processing from base band signal to radio frequency signal is done as data processing in a processor.
  • a transmitting E/O (electric to optical) -converter 7 is connected to the transmitter part 4 of the radio unit. Possibly, a plurality of such converters can be fed by the transmitter part 4, making it possible to talk about a star architecture. In such cases there is another/one more connection 8 from the transmitter part 4.
  • the transmitting E/O-converter 7 modulates an electrical radio signal (downlink) from the transmitter part 4 on an analog optical signal which is transmitted over a first optical broadband fiber 9.
  • a laser which generates the optical signal then can be modulated in different ways (directly or externally) to generate the wanted modulated optical signal.
  • an optical splitter can be located close to the transmitting E/O-converter 7 to allow that the modulated optical signal is transmitted in different directions in a star or bus architecture.
  • the first optical fiber 9 leads from the transmitting E/O-converter of the central unit to a detached antenna unit 10, which provides coverage within a cell 11 at a distance from the central unit 2.
  • a receiving O/E (optical to electric) -converter 12 which converts the optical signal to an electric radio signal.
  • This signal is amplified and connected via a duplex filter 13 to an antenna 14 and is transmitted by this to a terminal (not shown) , such as a mobile telephone.
  • a terminal not shown
  • an optical splitter 19 can be located at the receiving O/E-converter 12.
  • signals from a terminal which are received by the antenna 14 are processed/handled. These are passing through the duplex filter 13 to a transmitting E/O-converter 15.
  • the duplex filter 13 is intended to make possible that the same antenna can be utilized for transmission and reception.
  • the transmitting E/O-converter 15 modulates the received electric radio signal on an optical signal from a laser and transmits this signal by means of a second optical fiber 16 to a receiving O/E-converter 17. This converts the received optical signal to an electric signal which is fed to the receiver part of the radio unit 3.
  • a power supply cable (not shown) . This makes central power supply of the antenna unit possible.
  • each transmitter part 4 and each receiver part 3 can be connected to a plurality of different E/O-converters respective O/E-converters .
  • optical splitters 18, 19 can be located between the different O/E-converters and E/O-converters to make different star and bus architectures in the optical domain possible.
  • Figure 2a-2d shows an example of how a group of cells, which are served by a common central unit according to the invention, gradually can be adapted to new future standards.
  • the central unit of the base station which in the figures is denominated "B"
  • B is in this example connected with detached antenna units, which serve ten different cells of different sizes.
  • the antenna units in all cells are capable of communicating according to the GSM/GPRS- standards. Cells with this ability are in the figures given the denomination "G” . Further, the antenna units in certain cells are capable to communicate according a WLAN-standard, such as IEEE 802.11. These cells are in the Figures 2a-2d given the denomination "W” .
  • FIG 2b the antenna units of some cells have been given the ability to communicate according to a UMTS- standard and others according to a HIPERLAN-standard. These cells now have been given the denomination "U” respective "H". Because the central unit functions as a multimode base station, these changes can be made by smallest possible investments .
  • Figure 2c and 2d shows further development of the system. In Figure 2d the system has wholly changed to communication according HIPERLAN and UMTS. Communication according to GSM/GPRS and WLAN-standards is then no longer of current interest.
  • a system according to the invention functions in indoor systems as well as in outdoor systems .
  • the central unit can be located anywhere where there is suitable place and power supply, without any specific considerations regarding radio transmission conditions. The central unit only requires little power.
  • the antenna units can operate with comparatively little power because it will be considerably cheap to add extra antenna units, so the number of antennae can be made large, which results in small cells and good frequency recovery.
  • the system further can essentially be upgraded over the mobile network to which it is connected. This results in a flexible system.

Abstract

The present invention relates to a mobile base station system 81) including a central unit (2) and at least one antenna unit (10). The system is characterized in that the central unit (2) includes means (3, 4) to function/operate according to two different access standards, in that at least a first one of said antenna units (10) is detached from the central unit (2) and located geographically separated from this, and in connection devices (9, 16) which connect the central unit and said first antenna unit.

Description

Mobile base station system where the central unit and the antenna units are seperated from each other
TECHNICAL FIELD
The invention relates to a mobile base station system according to the introduction to the patent claim 1.
BACKGROUND OF THE INVENTION
Mobile cellular telephone systems according to different standards have, as regards capacity, developed very rapidly in recent years. The ever increasing demands of the users on performance of the systems then has required advanced cell planning. The introduction of geographically small cells (micro cells), which contain base station systems with comparatively small output power (micro bases) , has provided increased possibilities for such cell planning. Micro cells are used at places with high traffic density, such as airports.
The building/extension of a mobile system requires big financial resources, so cell planning includes advanced optimization problems for the operator of the system. The building/extensions of mobile systems which have been made lately mainly relates to the mobile systems of the so called second generation, preferably according to the standards GSM, D-AMPS and PDC. When the mobile systems of the third generation now are introduced, this implies heavy operator expenses because a complete infrastructure, parallel with the infrastructure of the systems of the second generation has to be built. The directing of the systems of the third generation towards broadband packet data services in addition puts forward especially high demands on high capacity. Further, there are also systems for wireless data communication networks being built, so called WLAN (Wireless Local Area Network) , which require further infrastructure at high costs. Generally, the introduction of new systems implies heavy expenses, because existing infrastructure has to be replaced and because a multitude of base stations with belonging antenna systems have to be arranged.
SUMMARY OF THE INVENTION
An aim of the present invention is to wholly or partially eliminate above mentioned problems .
This aim is achieved by a mobile base station system according to patent claim 1.
More exactly, the invention relates to a mobile base station system including a central unit and at least one antenna unit. According to the invention, the central unit includes means to function/operate according to at least two different optional access standards, in that at least a first one of said antenna units is detached from the central unit and located geographically separated from this. Further, there are connection devices which connect the central unit and the first antenna unit. In such a system, a system of the second generation, for instance according to GSM/GPRS-standard, can function/operate beside a later mobile system, for instance according to a UMTS- standard, or a WLAN-standard, (for instance IEEE 802.11). Further, the above mentioned central unit can be utilized together with a number of different antenna units located separated from each other. This allows that a plurality of small and large cells are established at a distance from the central unit, which provides possibilities for cost efficient cell planning. The connection device preferably includes at least a pair of optical fibers, such as single mode fibers or multimode fibers for transmission/transfer of signals. This allows broadband information transmission between central unit and antenna unit. According to one preferred embodiment, the connection device further includes a cable for power supply. If such a cable exists, no specific power supply need to be arranged at the place where the antenna unit is located.
The central unit preferably includes means to function/operate according to at least two of the following access standards: UMTS, GSM/GPRS, GSM/EDGE, HIPERLAN 2 and IEEE 802.11. This makes cost efficient upgrading of existing systems to newer standards possible.
According to one preferred embodiment, the central unit utilizes, at execution of information transmission according to the at least two access standards, one for these common interface towards a mobile network (PLMN) , to which the base station system is connected. Such a system makes the utilization of a common network for two different standards possible. The central unit preferably includes a software based radio transmitter/radio transceiver (software radio) . Such a system allows rearrangement and reconfiguration of the central unit without substantial changes in the hardware of the system.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 shows a system according to the present invention.
Figure 2 shows an example of how the traffic in a group of cells, which is served by a common central unit according to the invention, gradually can be adapted to new future standards .
DESCRIPTION OF PREFERRED EMBODIMENTS Figure 1 shows a base station system 1 according to the present invention. The system 1 includes a central unit 2 which has at least one radio unit with a receiver part 3 and a transmitter part 4. According to the invention, the radio part is equipped to operate according to at least two different access standards. With such a radio part, the base station 1 can be called a multimode base station. The base station then is said to operate in a plurality of modes, when it operates at the same time and optionally according to different access standards. It is advisable to utilize common interface for signaling 5 and data transmission 6 for the different modes. In that way a common basic network can be used for the different standards. The system then can be said to have a transparent radio architecture. Channel allocation and allocation according to standard can be made dynamically. The radio part 3, 4 can be realized as a hardware solution with different groups of integrated circuits for different standards. Preferably, however, a software based radio part is used where the major part of the signal processing from base band signal to radio frequency signal is done as data processing in a processor.
To the transmitter part 4 of the radio unit, a transmitting E/O (electric to optical) -converter 7 is connected. Possibly, a plurality of such converters can be fed by the transmitter part 4, making it possible to talk about a star architecture. In such cases there is another/one more connection 8 from the transmitter part 4. The transmitting E/O-converter 7 modulates an electrical radio signal (downlink) from the transmitter part 4 on an analog optical signal which is transmitted over a first optical broadband fiber 9. A laser which generates the optical signal then can be modulated in different ways (directly or externally) to generate the wanted modulated optical signal. Possibly, an optical splitter can be located close to the transmitting E/O-converter 7 to allow that the modulated optical signal is transmitted in different directions in a star or bus architecture.
The first optical fiber 9 leads from the transmitting E/O-converter of the central unit to a detached antenna unit 10, which provides coverage within a cell 11 at a distance from the central unit 2. There the modulated signal is received by a receiving O/E (optical to electric) -converter 12, which converts the optical signal to an electric radio signal. This signal is amplified and connected via a duplex filter 13 to an antenna 14 and is transmitted by this to a terminal (not shown) , such as a mobile telephone. Also at the receiving O/E-converter 12, an optical splitter 19 can be located.
In a similar way signals from a terminal which are received by the antenna 14 (uplink) are processed/handled. These are passing through the duplex filter 13 to a transmitting E/O-converter 15. The duplex filter 13 is intended to make possible that the same antenna can be utilized for transmission and reception. The transmitting E/O-converter 15 modulates the received electric radio signal on an optical signal from a laser and transmits this signal by means of a second optical fiber 16 to a receiving O/E-converter 17. This converts the received optical signal to an electric signal which is fed to the receiver part of the radio unit 3. Between the central unit 2 and the detached antenna unit 10 there also can be a power supply cable (not shown) . This makes central power supply of the antenna unit possible. It can also be utilized for narrow band signaling and for instance for tuning the duplex filter 13 of the antenna unit. As is indicated in the figure, each transmitter part 4 and each receiver part 3 can be connected to a plurality of different E/O-converters respective O/E-converters . Also optical splitters 18, 19 can be located between the different O/E-converters and E/O-converters to make different star and bus architectures in the optical domain possible. Figure 2a-2d shows an example of how a group of cells, which are served by a common central unit according to the invention, gradually can be adapted to new future standards. The central unit of the base station, which in the figures is denominated "B", is in this example connected with detached antenna units, which serve ten different cells of different sizes. In Figure 2a the antenna units in all cells are capable of communicating according to the GSM/GPRS- standards. Cells with this ability are in the figures given the denomination "G" . Further, the antenna units in certain cells are capable to communicate according a WLAN-standard, such as IEEE 802.11. These cells are in the Figures 2a-2d given the denomination "W" .
In Figure 2b the antenna units of some cells have been given the ability to communicate according to a UMTS- standard and others according to a HIPERLAN-standard. These cells now have been given the denomination "U" respective "H". Because the central unit functions as a multimode base station, these changes can be made by smallest possible investments . Figure 2c and 2d shows further development of the system. In Figure 2d the system has wholly changed to communication according HIPERLAN and UMTS. Communication according to GSM/GPRS and WLAN-standards is then no longer of current interest. A system according to the invention functions in indoor systems as well as in outdoor systems . The central unit can be located anywhere where there is suitable place and power supply, without any specific considerations regarding radio transmission conditions. The central unit only requires little power.
Also the antenna units can operate with comparatively little power because it will be considerably cheap to add extra antenna units, so the number of antennae can be made large, which results in small cells and good frequency recovery.
The system further can essentially be upgraded over the mobile network to which it is connected. This results in a flexible system.

Claims

PATENT CLAIMS
1. Mobile base station system including a central unit (2) and at least one antenna unit (10) , c h a r a c t e r i z e d in that the central unit (2) includes means to function/operate according to at least two different access standards, that at least a first one of said antenna units (10) is detached from the central unit (2) and located geographically separated from this, and that connection devices (9,16) connect the central unit (2) and said first antenna unit (10) .
2. Mobile base station system as claimed in patent claim 1, at which the system includes a plurality of detached antenna units, which are located geographically separated from each other.
3. Mobile base station system as claimed in any of the previous patent claims, at which said connection devices include at least one optical fiber for signal transmission. . Mobile base station system as claimed in patent claim 3, at which said optical fiber is a single mode fiber.
5. Mobile base station system as claimed in patent claim 3, at which said optical fiber is a multimode fiber. 6. Mobile base station system as claimed in any of the patent claims 3-5, at which said connection devices further include a cable for power supply.
7. Mobile base station system as claimed in any of the previous patent claims, at which said central unit includes means to function/operate according to at least two of the following access standards: UMTS, GSM/GPRS, GSM/EDGE, HIPERLAN 2 and IEEE 802.11.
8. Mobile base station system as claimed in any of the previous patent claims, at which the central unit at execution of transmission of information according to said at lest two access standards utilizes one for these common interface towards a mobile network (PLMN) , to which the base station system is connected.
9. Mobile base station system as claimed in any of the previous patent claims, at which the central unit includes a software based radio transmitter/radio receiver (software radio) .
10. Mobile base station system as claimed in any of the previous patent claims, at which allocation of bandwidth for the different access standards is made via a mobile network to which the system is connected.
PCT/SE2001/002143 2000-10-06 2001-10-03 Mobile base station system where the central unit and the antenna units are separated from each other WO2002030141A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0003610-3 2000-10-06
SE0003610A SE0003610L (en) 2000-10-06 2000-10-06 Device in mobile telecommunication system

Publications (1)

Publication Number Publication Date
WO2002030141A1 true WO2002030141A1 (en) 2002-04-11

Family

ID=20281321

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2001/002143 WO2002030141A1 (en) 2000-10-06 2001-10-03 Mobile base station system where the central unit and the antenna units are separated from each other

Country Status (2)

Country Link
SE (1) SE0003610L (en)
WO (1) WO2002030141A1 (en)

Cited By (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004095776A2 (en) * 2003-04-22 2004-11-04 Matsushita Electric Industrial Co., Ltd. Wireless lan system wherein an access point is connected to remote slave stations via an optical multiplexing system
EP1947873A1 (en) * 2005-09-01 2008-07-23 Huawei Technologies Co., Ltd. Multi-mode network communication system
EP2088795A1 (en) * 2006-12-15 2009-08-12 Huawei Technologies Co., Ltd. A system, base station and method for communication of multi-mode base stations
EP2094024A1 (en) * 2006-12-15 2009-08-26 Huawei Technologies Co Ltd Processing method and system for realizing the configuring of network element in multi-standard communication system
US7787823B2 (en) 2006-09-15 2010-08-31 Corning Cable Systems Llc Radio-over-fiber (RoF) optical fiber cable system with transponder diversity and RoF wireless picocellular system using same
US7848654B2 (en) 2006-09-28 2010-12-07 Corning Cable Systems Llc Radio-over-fiber (RoF) wireless picocellular system with combined picocells
US8111998B2 (en) * 2007-02-06 2012-02-07 Corning Cable Systems Llc Transponder systems and methods for radio-over-fiber (RoF) wireless picocellular systems
US8175459B2 (en) 2007-10-12 2012-05-08 Corning Cable Systems Llc Hybrid wireless/wired RoF transponder and hybrid RoF communication system using same
US8275265B2 (en) 2010-02-15 2012-09-25 Corning Cable Systems Llc Dynamic cell bonding (DCB) for radio-over-fiber (RoF)-based networks and communication systems and related methods
US8472767B2 (en) 2006-05-19 2013-06-25 Corning Cable Systems Llc Fiber optic cable and fiber optic cable assembly for wireless access
US8548330B2 (en) 2009-07-31 2013-10-01 Corning Cable Systems Llc Sectorization in distributed antenna systems, and related components and methods
US8644844B2 (en) 2007-12-20 2014-02-04 Corning Mobileaccess Ltd. Extending outdoor location based services and applications into enclosed areas
US8867919B2 (en) 2007-07-24 2014-10-21 Corning Cable Systems Llc Multi-port accumulator for radio-over-fiber (RoF) wireless picocellular systems
US8873585B2 (en) 2006-12-19 2014-10-28 Corning Optical Communications Wireless Ltd Distributed antenna system for MIMO technologies
US9037143B2 (en) 2010-08-16 2015-05-19 Corning Optical Communications LLC Remote antenna clusters and related systems, components, and methods supporting digital data signal propagation between remote antenna units
US9042732B2 (en) 2010-05-02 2015-05-26 Corning Optical Communications LLC Providing digital data services in optical fiber-based distributed radio frequency (RF) communication systems, and related components and methods
US9112611B2 (en) 2009-02-03 2015-08-18 Corning Optical Communications LLC Optical fiber-based distributed antenna systems, components, and related methods for calibration thereof
US9178635B2 (en) 2014-01-03 2015-11-03 Corning Optical Communications Wireless Ltd Separation of communication signal sub-bands in distributed antenna systems (DASs) to reduce interference
US9184843B2 (en) 2011-04-29 2015-11-10 Corning Optical Communications LLC Determining propagation delay of communications in distributed antenna systems, and related components, systems, and methods
US9219879B2 (en) 2009-11-13 2015-12-22 Corning Optical Communications LLC Radio-over-fiber (ROF) system for protocol-independent wired and/or wireless communication
US9240835B2 (en) 2011-04-29 2016-01-19 Corning Optical Communications LLC Systems, methods, and devices for increasing radio frequency (RF) power in distributed antenna systems
US9247543B2 (en) 2013-07-23 2016-01-26 Corning Optical Communications Wireless Ltd Monitoring non-supported wireless spectrum within coverage areas of distributed antenna systems (DASs)
US9258052B2 (en) 2012-03-30 2016-02-09 Corning Optical Communications LLC Reducing location-dependent interference in distributed antenna systems operating in multiple-input, multiple-output (MIMO) configuration, and related components, systems, and methods
US9325429B2 (en) 2011-02-21 2016-04-26 Corning Optical Communications LLC Providing digital data services as electrical signals and radio-frequency (RF) communications over optical fiber in distributed communications systems, and related components and methods
US9357551B2 (en) 2014-05-30 2016-05-31 Corning Optical Communications Wireless Ltd Systems and methods for simultaneous sampling of serial digital data streams from multiple analog-to-digital converters (ADCS), including in distributed antenna systems
US9385810B2 (en) 2013-09-30 2016-07-05 Corning Optical Communications Wireless Ltd Connection mapping in distributed communication systems
US9420542B2 (en) 2014-09-25 2016-08-16 Corning Optical Communications Wireless Ltd System-wide uplink band gain control in a distributed antenna system (DAS), based on per band gain control of remote uplink paths in remote units
US9455784B2 (en) 2012-10-31 2016-09-27 Corning Optical Communications Wireless Ltd Deployable wireless infrastructures and methods of deploying wireless infrastructures
US9525472B2 (en) 2014-07-30 2016-12-20 Corning Incorporated Reducing location-dependent destructive interference in distributed antenna systems (DASS) operating in multiple-input, multiple-output (MIMO) configuration, and related components, systems, and methods
US9525488B2 (en) 2010-05-02 2016-12-20 Corning Optical Communications LLC Digital data services and/or power distribution in optical fiber-based distributed communications systems providing digital data and radio frequency (RF) communications services, and related components and methods
US9531452B2 (en) 2012-11-29 2016-12-27 Corning Optical Communications LLC Hybrid intra-cell / inter-cell remote unit antenna bonding in multiple-input, multiple-output (MIMO) distributed antenna systems (DASs)
US9602210B2 (en) 2014-09-24 2017-03-21 Corning Optical Communications Wireless Ltd Flexible head-end chassis supporting automatic identification and interconnection of radio interface modules and optical interface modules in an optical fiber-based distributed antenna system (DAS)
US9621293B2 (en) 2012-08-07 2017-04-11 Corning Optical Communications Wireless Ltd Distribution of time-division multiplexed (TDM) management services in a distributed antenna system, and related components, systems, and methods
US9647758B2 (en) 2012-11-30 2017-05-09 Corning Optical Communications Wireless Ltd Cabling connectivity monitoring and verification
US9661781B2 (en) 2013-07-31 2017-05-23 Corning Optical Communications Wireless Ltd Remote units for distributed communication systems and related installation methods and apparatuses
US9673904B2 (en) 2009-02-03 2017-06-06 Corning Optical Communications LLC Optical fiber-based distributed antenna systems, components, and related methods for calibration thereof
US9681313B2 (en) 2015-04-15 2017-06-13 Corning Optical Communications Wireless Ltd Optimizing remote antenna unit performance using an alternative data channel
US9715157B2 (en) 2013-06-12 2017-07-25 Corning Optical Communications Wireless Ltd Voltage controlled optical directional coupler
US9730228B2 (en) 2014-08-29 2017-08-08 Corning Optical Communications Wireless Ltd Individualized gain control of remote uplink band paths in a remote unit in a distributed antenna system (DAS), based on combined uplink power level in the remote unit
US9729267B2 (en) 2014-12-11 2017-08-08 Corning Optical Communications Wireless Ltd Multiplexing two separate optical links with the same wavelength using asymmetric combining and splitting
US9775123B2 (en) 2014-03-28 2017-09-26 Corning Optical Communications Wireless Ltd. Individualized gain control of uplink paths in remote units in a distributed antenna system (DAS) based on individual remote unit contribution to combined uplink power
US9807700B2 (en) 2015-02-19 2017-10-31 Corning Optical Communications Wireless Ltd Offsetting unwanted downlink interference signals in an uplink path in a distributed antenna system (DAS)
US9948349B2 (en) 2015-07-17 2018-04-17 Corning Optical Communications Wireless Ltd IOT automation and data collection system
US9974074B2 (en) 2013-06-12 2018-05-15 Corning Optical Communications Wireless Ltd Time-division duplexing (TDD) in distributed communications systems, including distributed antenna systems (DASs)
US10096909B2 (en) 2014-11-03 2018-10-09 Corning Optical Communications Wireless Ltd. Multi-band monopole planar antennas configured to facilitate improved radio frequency (RF) isolation in multiple-input multiple-output (MIMO) antenna arrangement
US10110308B2 (en) 2014-12-18 2018-10-23 Corning Optical Communications Wireless Ltd Digital interface modules (DIMs) for flexibly distributing digital and/or analog communications signals in wide-area analog distributed antenna systems (DASs)
US10128951B2 (en) 2009-02-03 2018-11-13 Corning Optical Communications LLC Optical fiber-based distributed antenna systems, components, and related methods for monitoring and configuring thereof
US10136200B2 (en) 2012-04-25 2018-11-20 Corning Optical Communications LLC Distributed antenna system architectures
US10135533B2 (en) 2014-11-13 2018-11-20 Corning Optical Communications Wireless Ltd Analog distributed antenna systems (DASS) supporting distribution of digital communications signals interfaced from a digital signal source and analog radio frequency (RF) communications signals
US10187151B2 (en) 2014-12-18 2019-01-22 Corning Optical Communications Wireless Ltd Digital-analog interface modules (DAIMs) for flexibly distributing digital and/or analog communications signals in wide-area analog distributed antenna systems (DASs)
US10236924B2 (en) 2016-03-31 2019-03-19 Corning Optical Communications Wireless Ltd Reducing out-of-channel noise in a wireless distribution system (WDS)
US10560214B2 (en) 2015-09-28 2020-02-11 Corning Optical Communications LLC Downlink and uplink communication path switching in a time-division duplex (TDD) distributed antenna system (DAS)
US10659163B2 (en) 2014-09-25 2020-05-19 Corning Optical Communications LLC Supporting analog remote antenna units (RAUs) in digital distributed antenna systems (DASs) using analog RAU digital adaptors
US11178609B2 (en) 2010-10-13 2021-11-16 Corning Optical Communications LLC Power management for remote antenna units in distributed antenna systems

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5648961A (en) * 1994-11-21 1997-07-15 Meisei Electric Co., Ltd. Radio telephone system and antenna device and base station for the same
GB2320653A (en) * 1996-12-23 1998-06-24 Northern Telecom Ltd Mobile Communications Network Using Alternative Protocols
US5809395A (en) * 1991-01-15 1998-09-15 Rogers Cable Systems Limited Remote antenna driver for a radio telephony system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5809395A (en) * 1991-01-15 1998-09-15 Rogers Cable Systems Limited Remote antenna driver for a radio telephony system
US5648961A (en) * 1994-11-21 1997-07-15 Meisei Electric Co., Ltd. Radio telephone system and antenna device and base station for the same
GB2320653A (en) * 1996-12-23 1998-06-24 Northern Telecom Ltd Mobile Communications Network Using Alternative Protocols

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
SCHUH R.E. ET AL.: "An architecture for radio-independent wireless access networks", VEHICULAR TECHNOLOGY CONFERENCE, 1999 IEEE 49TH, vol. 2, 16 May 1999 (1999-05-16) - 20 May 1999 (1999-05-20), pages 1227 - 1231 *
SCHUH R.E.: "Hybrid fiber radio for second and third generation wireless systems", INTERNATIONAL TOPICAL MEETING ON MICROWAVE PHOTONICS, 1999, MWP'99, vol. 1, 17 November 1999 (1999-11-17) - 19 November 1999 (1999-11-19), pages 213 - 216 *

Cited By (102)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004095776A3 (en) * 2003-04-22 2005-02-24 Matsushita Electric Ind Co Ltd Wireless lan system wherein an access point is connected to remote slave stations via an optical multiplexing system
CN100366109C (en) * 2003-04-22 2008-01-30 松下电器产业株式会社 Wireless LAN system wherein an access point is connected to remote slave stations via an optical multiplexing system
WO2004095776A2 (en) * 2003-04-22 2004-11-04 Matsushita Electric Industrial Co., Ltd. Wireless lan system wherein an access point is connected to remote slave stations via an optical multiplexing system
EP1947873A4 (en) * 2005-09-01 2010-05-19 Huawei Tech Co Ltd Multi-mode network communication system
EP1947873A1 (en) * 2005-09-01 2008-07-23 Huawei Technologies Co., Ltd. Multi-mode network communication system
US8472767B2 (en) 2006-05-19 2013-06-25 Corning Cable Systems Llc Fiber optic cable and fiber optic cable assembly for wireless access
US7787823B2 (en) 2006-09-15 2010-08-31 Corning Cable Systems Llc Radio-over-fiber (RoF) optical fiber cable system with transponder diversity and RoF wireless picocellular system using same
US7848654B2 (en) 2006-09-28 2010-12-07 Corning Cable Systems Llc Radio-over-fiber (RoF) wireless picocellular system with combined picocells
EP2088795A4 (en) * 2006-12-15 2010-03-17 Huawei Tech Co Ltd A system, base station and method for communication of multi-mode base stations
EP2094024A4 (en) * 2006-12-15 2010-03-03 Huawei Tech Co Ltd Processing method and system for realizing the configuring of network element in multi-standard communication system
CN101202974B (en) * 2006-12-15 2011-09-28 华为技术有限公司 System, base station and method for multi-standard base station intercommunication
EP2094024A1 (en) * 2006-12-15 2009-08-26 Huawei Technologies Co Ltd Processing method and system for realizing the configuring of network element in multi-standard communication system
EP2088795A1 (en) * 2006-12-15 2009-08-12 Huawei Technologies Co., Ltd. A system, base station and method for communication of multi-mode base stations
US9130613B2 (en) 2006-12-19 2015-09-08 Corning Optical Communications Wireless Ltd Distributed antenna system for MIMO technologies
US8873585B2 (en) 2006-12-19 2014-10-28 Corning Optical Communications Wireless Ltd Distributed antenna system for MIMO technologies
US8111998B2 (en) * 2007-02-06 2012-02-07 Corning Cable Systems Llc Transponder systems and methods for radio-over-fiber (RoF) wireless picocellular systems
US8867919B2 (en) 2007-07-24 2014-10-21 Corning Cable Systems Llc Multi-port accumulator for radio-over-fiber (RoF) wireless picocellular systems
US8175459B2 (en) 2007-10-12 2012-05-08 Corning Cable Systems Llc Hybrid wireless/wired RoF transponder and hybrid RoF communication system using same
US8718478B2 (en) 2007-10-12 2014-05-06 Corning Cable Systems Llc Hybrid wireless/wired RoF transponder and hybrid RoF communication system using same
US8644844B2 (en) 2007-12-20 2014-02-04 Corning Mobileaccess Ltd. Extending outdoor location based services and applications into enclosed areas
US10153841B2 (en) 2009-02-03 2018-12-11 Corning Optical Communications LLC Optical fiber-based distributed antenna systems, components, and related methods for calibration thereof
US10128951B2 (en) 2009-02-03 2018-11-13 Corning Optical Communications LLC Optical fiber-based distributed antenna systems, components, and related methods for monitoring and configuring thereof
US9900097B2 (en) 2009-02-03 2018-02-20 Corning Optical Communications LLC Optical fiber-based distributed antenna systems, components, and related methods for calibration thereof
US9112611B2 (en) 2009-02-03 2015-08-18 Corning Optical Communications LLC Optical fiber-based distributed antenna systems, components, and related methods for calibration thereof
US9673904B2 (en) 2009-02-03 2017-06-06 Corning Optical Communications LLC Optical fiber-based distributed antenna systems, components, and related methods for calibration thereof
US8548330B2 (en) 2009-07-31 2013-10-01 Corning Cable Systems Llc Sectorization in distributed antenna systems, and related components and methods
US9729238B2 (en) 2009-11-13 2017-08-08 Corning Optical Communications LLC Radio-over-fiber (ROF) system for protocol-independent wired and/or wireless communication
US9219879B2 (en) 2009-11-13 2015-12-22 Corning Optical Communications LLC Radio-over-fiber (ROF) system for protocol-independent wired and/or wireless communication
US9485022B2 (en) 2009-11-13 2016-11-01 Corning Optical Communications LLC Radio-over-fiber (ROF) system for protocol-independent wired and/or wireless communication
US8831428B2 (en) 2010-02-15 2014-09-09 Corning Optical Communications LLC Dynamic cell bonding (DCB) for radio-over-fiber (RoF)-based networks and communication systems and related methods
US9319138B2 (en) 2010-02-15 2016-04-19 Corning Optical Communications LLC Dynamic cell bonding (DCB) for radio-over-fiber (RoF)-based networks and communication systems and related methods
US8275265B2 (en) 2010-02-15 2012-09-25 Corning Cable Systems Llc Dynamic cell bonding (DCB) for radio-over-fiber (RoF)-based networks and communication systems and related methods
US9270374B2 (en) 2010-05-02 2016-02-23 Corning Optical Communications LLC Providing digital data services in optical fiber-based distributed radio frequency (RF) communications systems, and related components and methods
US9525488B2 (en) 2010-05-02 2016-12-20 Corning Optical Communications LLC Digital data services and/or power distribution in optical fiber-based distributed communications systems providing digital data and radio frequency (RF) communications services, and related components and methods
US9042732B2 (en) 2010-05-02 2015-05-26 Corning Optical Communications LLC Providing digital data services in optical fiber-based distributed radio frequency (RF) communication systems, and related components and methods
US9853732B2 (en) 2010-05-02 2017-12-26 Corning Optical Communications LLC Digital data services and/or power distribution in optical fiber-based distributed communications systems providing digital data and radio frequency (RF) communications services, and related components and methods
US10014944B2 (en) 2010-08-16 2018-07-03 Corning Optical Communications LLC Remote antenna clusters and related systems, components, and methods supporting digital data signal propagation between remote antenna units
US9037143B2 (en) 2010-08-16 2015-05-19 Corning Optical Communications LLC Remote antenna clusters and related systems, components, and methods supporting digital data signal propagation between remote antenna units
US11671914B2 (en) 2010-10-13 2023-06-06 Corning Optical Communications LLC Power management for remote antenna units in distributed antenna systems
US11178609B2 (en) 2010-10-13 2021-11-16 Corning Optical Communications LLC Power management for remote antenna units in distributed antenna systems
US11224014B2 (en) 2010-10-13 2022-01-11 Corning Optical Communications LLC Power management for remote antenna units in distributed antenna systems
US11212745B2 (en) 2010-10-13 2021-12-28 Corning Optical Communications LLC Power management for remote antenna units in distributed antenna systems
US8913892B2 (en) 2010-10-28 2014-12-16 Coring Optical Communications LLC Sectorization in distributed antenna systems, and related components and methods
US9813164B2 (en) 2011-02-21 2017-11-07 Corning Optical Communications LLC Providing digital data services as electrical signals and radio-frequency (RF) communications over optical fiber in distributed communications systems, and related components and methods
US9325429B2 (en) 2011-02-21 2016-04-26 Corning Optical Communications LLC Providing digital data services as electrical signals and radio-frequency (RF) communications over optical fiber in distributed communications systems, and related components and methods
US10205538B2 (en) 2011-02-21 2019-02-12 Corning Optical Communications LLC Providing digital data services as electrical signals and radio-frequency (RF) communications over optical fiber in distributed communications systems, and related components and methods
US9369222B2 (en) 2011-04-29 2016-06-14 Corning Optical Communications LLC Determining propagation delay of communications in distributed antenna systems, and related components, systems, and methods
US9806797B2 (en) 2011-04-29 2017-10-31 Corning Optical Communications LLC Systems, methods, and devices for increasing radio frequency (RF) power in distributed antenna systems
US9240835B2 (en) 2011-04-29 2016-01-19 Corning Optical Communications LLC Systems, methods, and devices for increasing radio frequency (RF) power in distributed antenna systems
US9184843B2 (en) 2011-04-29 2015-11-10 Corning Optical Communications LLC Determining propagation delay of communications in distributed antenna systems, and related components, systems, and methods
US10148347B2 (en) 2011-04-29 2018-12-04 Corning Optical Communications LLC Systems, methods, and devices for increasing radio frequency (RF) power in distributed antenna systems
US9807722B2 (en) 2011-04-29 2017-10-31 Corning Optical Communications LLC Determining propagation delay of communications in distributed antenna systems, and related components, systems, and methods
US9813127B2 (en) 2012-03-30 2017-11-07 Corning Optical Communications LLC Reducing location-dependent interference in distributed antenna systems operating in multiple-input, multiple-output (MIMO) configuration, and related components, systems, and methods
US9258052B2 (en) 2012-03-30 2016-02-09 Corning Optical Communications LLC Reducing location-dependent interference in distributed antenna systems operating in multiple-input, multiple-output (MIMO) configuration, and related components, systems, and methods
US10136200B2 (en) 2012-04-25 2018-11-20 Corning Optical Communications LLC Distributed antenna system architectures
US10349156B2 (en) 2012-04-25 2019-07-09 Corning Optical Communications LLC Distributed antenna system architectures
US9621293B2 (en) 2012-08-07 2017-04-11 Corning Optical Communications Wireless Ltd Distribution of time-division multiplexed (TDM) management services in a distributed antenna system, and related components, systems, and methods
US9973968B2 (en) 2012-08-07 2018-05-15 Corning Optical Communications Wireless Ltd Distribution of time-division multiplexed (TDM) management services in a distributed antenna system, and related components, systems, and methods
US9455784B2 (en) 2012-10-31 2016-09-27 Corning Optical Communications Wireless Ltd Deployable wireless infrastructures and methods of deploying wireless infrastructures
US9531452B2 (en) 2012-11-29 2016-12-27 Corning Optical Communications LLC Hybrid intra-cell / inter-cell remote unit antenna bonding in multiple-input, multiple-output (MIMO) distributed antenna systems (DASs)
US10361782B2 (en) 2012-11-30 2019-07-23 Corning Optical Communications LLC Cabling connectivity monitoring and verification
US9647758B2 (en) 2012-11-30 2017-05-09 Corning Optical Communications Wireless Ltd Cabling connectivity monitoring and verification
US9715157B2 (en) 2013-06-12 2017-07-25 Corning Optical Communications Wireless Ltd Voltage controlled optical directional coupler
US9974074B2 (en) 2013-06-12 2018-05-15 Corning Optical Communications Wireless Ltd Time-division duplexing (TDD) in distributed communications systems, including distributed antenna systems (DASs)
US11291001B2 (en) 2013-06-12 2022-03-29 Corning Optical Communications LLC Time-division duplexing (TDD) in distributed communications systems, including distributed antenna systems (DASs)
US11792776B2 (en) 2013-06-12 2023-10-17 Corning Optical Communications LLC Time-division duplexing (TDD) in distributed communications systems, including distributed antenna systems (DASs)
US9526020B2 (en) 2013-07-23 2016-12-20 Corning Optical Communications Wireless Ltd Monitoring non-supported wireless spectrum within coverage areas of distributed antenna systems (DASs)
US9247543B2 (en) 2013-07-23 2016-01-26 Corning Optical Communications Wireless Ltd Monitoring non-supported wireless spectrum within coverage areas of distributed antenna systems (DASs)
US10292056B2 (en) 2013-07-23 2019-05-14 Corning Optical Communications LLC Monitoring non-supported wireless spectrum within coverage areas of distributed antenna systems (DASs)
US9967754B2 (en) 2013-07-23 2018-05-08 Corning Optical Communications Wireless Ltd Monitoring non-supported wireless spectrum within coverage areas of distributed antenna systems (DASs)
US9661781B2 (en) 2013-07-31 2017-05-23 Corning Optical Communications Wireless Ltd Remote units for distributed communication systems and related installation methods and apparatuses
US9385810B2 (en) 2013-09-30 2016-07-05 Corning Optical Communications Wireless Ltd Connection mapping in distributed communication systems
US9178635B2 (en) 2014-01-03 2015-11-03 Corning Optical Communications Wireless Ltd Separation of communication signal sub-bands in distributed antenna systems (DASs) to reduce interference
US9775123B2 (en) 2014-03-28 2017-09-26 Corning Optical Communications Wireless Ltd. Individualized gain control of uplink paths in remote units in a distributed antenna system (DAS) based on individual remote unit contribution to combined uplink power
US9357551B2 (en) 2014-05-30 2016-05-31 Corning Optical Communications Wireless Ltd Systems and methods for simultaneous sampling of serial digital data streams from multiple analog-to-digital converters (ADCS), including in distributed antenna systems
US9807772B2 (en) 2014-05-30 2017-10-31 Corning Optical Communications Wireless Ltd. Systems and methods for simultaneous sampling of serial digital data streams from multiple analog-to-digital converters (ADCs), including in distributed antenna systems
US9929786B2 (en) 2014-07-30 2018-03-27 Corning Incorporated Reducing location-dependent destructive interference in distributed antenna systems (DASS) operating in multiple-input, multiple-output (MIMO) configuration, and related components, systems, and methods
US10256879B2 (en) 2014-07-30 2019-04-09 Corning Incorporated Reducing location-dependent destructive interference in distributed antenna systems (DASS) operating in multiple-input, multiple-output (MIMO) configuration, and related components, systems, and methods
US9525472B2 (en) 2014-07-30 2016-12-20 Corning Incorporated Reducing location-dependent destructive interference in distributed antenna systems (DASS) operating in multiple-input, multiple-output (MIMO) configuration, and related components, systems, and methods
US9730228B2 (en) 2014-08-29 2017-08-08 Corning Optical Communications Wireless Ltd Individualized gain control of remote uplink band paths in a remote unit in a distributed antenna system (DAS), based on combined uplink power level in the remote unit
US10397929B2 (en) 2014-08-29 2019-08-27 Corning Optical Communications LLC Individualized gain control of remote uplink band paths in a remote unit in a distributed antenna system (DAS), based on combined uplink power level in the remote unit
US9602210B2 (en) 2014-09-24 2017-03-21 Corning Optical Communications Wireless Ltd Flexible head-end chassis supporting automatic identification and interconnection of radio interface modules and optical interface modules in an optical fiber-based distributed antenna system (DAS)
US9929810B2 (en) 2014-09-24 2018-03-27 Corning Optical Communications Wireless Ltd Flexible head-end chassis supporting automatic identification and interconnection of radio interface modules and optical interface modules in an optical fiber-based distributed antenna system (DAS)
US9420542B2 (en) 2014-09-25 2016-08-16 Corning Optical Communications Wireless Ltd System-wide uplink band gain control in a distributed antenna system (DAS), based on per band gain control of remote uplink paths in remote units
US9788279B2 (en) 2014-09-25 2017-10-10 Corning Optical Communications Wireless Ltd System-wide uplink band gain control in a distributed antenna system (DAS), based on per-band gain control of remote uplink paths in remote units
US10659163B2 (en) 2014-09-25 2020-05-19 Corning Optical Communications LLC Supporting analog remote antenna units (RAUs) in digital distributed antenna systems (DASs) using analog RAU digital adaptors
US10096909B2 (en) 2014-11-03 2018-10-09 Corning Optical Communications Wireless Ltd. Multi-band monopole planar antennas configured to facilitate improved radio frequency (RF) isolation in multiple-input multiple-output (MIMO) antenna arrangement
US10135533B2 (en) 2014-11-13 2018-11-20 Corning Optical Communications Wireless Ltd Analog distributed antenna systems (DASS) supporting distribution of digital communications signals interfaced from a digital signal source and analog radio frequency (RF) communications signals
US10523326B2 (en) 2014-11-13 2019-12-31 Corning Optical Communications LLC Analog distributed antenna systems (DASS) supporting distribution of digital communications signals interfaced from a digital signal source and analog radio frequency (RF) communications signals
US10135561B2 (en) 2014-12-11 2018-11-20 Corning Optical Communications Wireless Ltd Multiplexing two separate optical links with the same wavelength using asymmetric combining and splitting
US9729267B2 (en) 2014-12-11 2017-08-08 Corning Optical Communications Wireless Ltd Multiplexing two separate optical links with the same wavelength using asymmetric combining and splitting
US10523327B2 (en) 2014-12-18 2019-12-31 Corning Optical Communications LLC Digital-analog interface modules (DAIMs) for flexibly distributing digital and/or analog communications signals in wide-area analog distributed antenna systems (DASs)
US10361783B2 (en) 2014-12-18 2019-07-23 Corning Optical Communications LLC Digital interface modules (DIMs) for flexibly distributing digital and/or analog communications signals in wide-area analog distributed antenna systems (DASs)
US10187151B2 (en) 2014-12-18 2019-01-22 Corning Optical Communications Wireless Ltd Digital-analog interface modules (DAIMs) for flexibly distributing digital and/or analog communications signals in wide-area analog distributed antenna systems (DASs)
US10110308B2 (en) 2014-12-18 2018-10-23 Corning Optical Communications Wireless Ltd Digital interface modules (DIMs) for flexibly distributing digital and/or analog communications signals in wide-area analog distributed antenna systems (DASs)
US10292114B2 (en) 2015-02-19 2019-05-14 Corning Optical Communications LLC Offsetting unwanted downlink interference signals in an uplink path in a distributed antenna system (DAS)
US9807700B2 (en) 2015-02-19 2017-10-31 Corning Optical Communications Wireless Ltd Offsetting unwanted downlink interference signals in an uplink path in a distributed antenna system (DAS)
US9681313B2 (en) 2015-04-15 2017-06-13 Corning Optical Communications Wireless Ltd Optimizing remote antenna unit performance using an alternative data channel
US10009094B2 (en) 2015-04-15 2018-06-26 Corning Optical Communications Wireless Ltd Optimizing remote antenna unit performance using an alternative data channel
US9948349B2 (en) 2015-07-17 2018-04-17 Corning Optical Communications Wireless Ltd IOT automation and data collection system
US10560214B2 (en) 2015-09-28 2020-02-11 Corning Optical Communications LLC Downlink and uplink communication path switching in a time-division duplex (TDD) distributed antenna system (DAS)
US10236924B2 (en) 2016-03-31 2019-03-19 Corning Optical Communications Wireless Ltd Reducing out-of-channel noise in a wireless distribution system (WDS)

Also Published As

Publication number Publication date
SE0003610D0 (en) 2000-10-06
SE0003610L (en) 2002-04-07

Similar Documents

Publication Publication Date Title
WO2002030141A1 (en) Mobile base station system where the central unit and the antenna units are separated from each other
JP3184047B2 (en) Multi-band cellular radiotelephone system architecture.
US5890055A (en) Method and system for connecting cells and microcells in a wireless communications network
JP2897492B2 (en) Mobile communication device
JP3965396B2 (en) Indoor near field communication network system using ultra wide area communication system
US6771933B1 (en) Wireless deployment of bluetooth access points using a distributed antenna architecture
EP1705843A1 (en) Method and apparatus for increasing capacity of a MIMO (multiple-input-multiple-output) wireless system by using relaying
CA2041705A1 (en) Method and apparatus for providing wireless communications between remote locations
FI112567B (en) Radio link system terminal synchronization
JP2000082991A (en) Cellular radio communication system repeating data on output side of radio base station and its data repeating device
CN102651873B (en) Signal transmission method, system and equipment for indoor distribution system
KR19990029554A (en) Modular, distributed radio architecture and dual carrier access using the same antenna
CN1252191A (en) Mobile satellite phone system incorporating symmetrical and non-symmetrical waveform modes
EP1089579B1 (en) Radio road vehicle communication system with enhanced system extendibility
CN101420260B (en) Radio electric device node, distributed radio communication base station and communication method therefor
EP1501216B1 (en) Access method and umts repeater system with spectral exchange between umts wave frequencies
KR100903556B1 (en) Wireless LAN system for underground railroad
CN110839278B (en) Indoor base station and positioning method
KR100465299B1 (en) Apparatus of junction for 2G and 3G mobile communication system
KR100267275B1 (en) Wireless communication system using wire communication network
JPH0435234A (en) Optical fiber radio communication system
CN116155314A (en) Communication device and mobile terminal
KR19990081469A (en) Wireless network system of macro cell configuration using optical system
Kush Wireless media: A new paradigm
JPH1093501A (en) Communication system

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): EE LT LV NO

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase