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WO1998027748A2 - Station et systeme de radiocommunications - Google Patents

Station et systeme de radiocommunications Download PDF

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Publication number
WO1998027748A2
WO1998027748A2 PCT/IL1997/000411 IL9700411W WO9827748A2 WO 1998027748 A2 WO1998027748 A2 WO 1998027748A2 IL 9700411 W IL9700411 W IL 9700411W WO 9827748 A2 WO9827748 A2 WO 9827748A2
Authority
WO
WIPO (PCT)
Prior art keywords
communications
wireless communications
plural
base unit
networks
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/IL1997/000411
Other languages
English (en)
Other versions
WO1998027748A3 (fr
Inventor
Allan Farber
Dmitri Petrov
Howard Loboda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Foxcom Ltd
Corning Optical Communications Wireless Ltd
Original Assignee
Foxcom Ltd
Corning Optical Communications Wireless Ltd
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
Priority claimed from IL11983296A external-priority patent/IL119832A/xx
Application filed by Foxcom Ltd, Corning Optical Communications Wireless Ltd filed Critical Foxcom Ltd
Priority to JP52751698A priority Critical patent/JP2001506826A/ja
Priority to BR9713714-6A priority patent/BR9713714A/pt
Priority to EP97947850A priority patent/EP0950326A4/fr
Priority to AU54082/98A priority patent/AU735820B2/en
Priority to CA002275251A priority patent/CA2275251A1/fr
Publication of WO1998027748A2 publication Critical patent/WO1998027748A2/fr
Publication of WO1998027748A3 publication Critical patent/WO1998027748A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile

Definitions

  • Cellular radio was conceived to provide high capacity mobile communications without requiring large amounts of spectrum.
  • the original concept as proposed by AT&T involves the use of a frequency band within a region known as a cell and reusing the same frequency band in other adjacent cells with manageable interference between cells.
  • the capacity of a cellular radio network increases as the number of cells increases with decreasing cell size
  • the small cells are known as microcells.
  • Optical fibers have been used to feed the RF signal to microcells. Optical fiber can be run inside buildings, train stations, malls, etc. to improve coverage in a wireless communications system
  • United States Patent 5,457,357 describes a number of details of a fiber optic microcellular radio system.
  • Present day wireless communications systems may be divided into a number of groups. These include cellular telephone networks, cordless telephones, wide area data networks, wireless local area networks, paging/messaging and satellite mobile systems Each wireless communications system has its own frequency band and modulation scheme as well as its own geographic location in which the system is deployed Some of these systems may become obsolete while others may evolve into future personal communication systems. Nevertheless, it appears that two or more wireless systems will commonly be found in any location.
  • each wireless communications system has its own network for improved coverage in buildings and other shadowed areas A building which requires improved coverage for more than one wireless service must be "wired" separately for each service
  • the present invention seeks to provide an improved distributed antenna network for microcells.
  • the present invention further seeks to provide a single optical fiber network which is used simultaneously for a number of wireless communications systems
  • a wireless communications station comprising a base unit including a communications interface for communicating with plural wireless communications networks; a received communications combiner for combining received communications signals received from the plural wireless communications networks into a single radio frequency output; a transmit communications splitter for splitting previously combined transmit communications signals to be transmitted to the plural wireless communications networks into plural radio frequency outputs; at least one fiberoptic transmitter receiving the single radio frequency output and providing a corresponding optical output; and at least one fiberoptic receiver receiving an optical input and providing an RF output containing previously combined transmit communications signals; a plurality of remote units, each including: plural antennas for communicating with communicators along plural wireless communications networks; a received communications splitter for splitting previously combined received communications signals from the base unit and supplying them to the plural antennas; a transmit communications combiner for combining transmit communications signals from the plural antennas into a combined radio frequency output; a fiberoptic transmitter receiving the combined radio frequency output and providing a corresponding optical output; and a fiberoptic receiver receiving an optical input and
  • each remote unit also comprises a diplexer or other isolation apparatus interposed between each of the plural antennas and the combiner and the splitter, so as to enable simultaneous two way communications via each antenna at different frequencies for transmission and reception.
  • the plural wireless communications networks include at least two communications networks selected from the group consisting of cellular telephone networks, cordless telephones, wide area data networks, wireless local area networks, personal communications systems, personal communications networks, paging/messaging networks and satellite mobile systems.
  • a low frequency control signal is multiplexed by the communications interface onto the fiber network for providing loop back alarm status of each remote unit and to provide control signals thereto, which control amplifier gain thereof.
  • the plural antennas include at last one swivel mounted directional antenna whose direction may be adjusted on site.
  • the base unit also includes tuning circuitry which permits dynamic tuning and transmission/reception balance of cell size of each of the remote units.
  • the base unit may also include a network management interface which allows monitoring of the operational status of a base unit and the remote units connected thereto.
  • the fiberoptic transmitter employs a vertical cavity surface emitting laser or an edge emitting laser coupled to a single or multi mode fiber.
  • the edge emitting laser may be a distributed feedback laser integrated with an optical isolator.
  • a microcellular telecommunications system employing a fiber network including optical fibers which may be single or multi mode and optical transmitters for transmitting signals along the optical fibers, the optical transmitters comprising a vertical cavity surface emitting laser.
  • Fig. 1 is a simplified pictorial illustration of part of a wireless communications station, constructed and operative in accordance with a preferred embodiment of the present invention
  • Fig. 2 is a simplified block diagram illustration of circuitry employed in the apparatus of Fig. 1;
  • Fig. 3 is a somewhat more detailed block diagram illustration of part of the circuitry of Fig. 2;
  • Fig. 4 is a simplified block diagram illustration of a soft limiter, constructed and operative in accordance with a preferred embodiment of the present invention.
  • Fig. 5 A is a simplified block diagram of part of the circuitry of Fig. 2, in accordance with a preferred embodiment of the present invention;
  • Fig. 5B is a simplified block diagram of part of the circuitry of Fig. 2, in accordance with another preferred embodiment of the present invention, and including microprocessor control of remote antenna units;
  • Fig. 5C is a simplified illustration of a remote control unit for remotely controlling control parameters of a local cell, in accordance with a preferred embodiment of the present invention;
  • Fig. 6 is a simplified block diagram illustration of network management apparatus useful in the apparatus of Figs. 1 - 5B; and Fig. 7 is an illustration of the use of directional antennas in a system of the type illustrated in Figs. 1 - 6.
  • Figs. 1 and 2 illustrate a multi-system station which forms part of a wireless communications system constructed and operative in accordance with a preferred embodiment of the present invention.
  • a plurality of wireless network services such as PCS, GSM and other wireless telephone and radio services as well as paging services, each communicate via an appropriate antenna (not shown) with one or more multi-system stations such as that illustrated in Fig. 1.
  • Each station may be a building, part of a building or a plurality of buildings, depending upon system requirements.
  • each station comprises a base unit 10 which communicates with each of the required wireless network services, typically via wide bandwidth RF interface wired links which provide, typically a GSM input, a GSM output, a PCS input, a PCS output and a paging input. It is appreciated that any other suitable systems may also be connected to the base unit 10.
  • the base unit 10 preferably comprises an input combiner 12, which combines the various wireless inputs, such as the GSM, PCS and paging inputs into a combined output, typically in the form of a multiplexed signal, and provides the multiplexed signal via respective fiberoptic transmitters 14 and fiberoptic cables 16 to a plurality of remote units 20, which are typically distributed on different floors, or even in different rooms of one or more buildings or any indoor or shadowed areas, depending on the building construction and system requirements.
  • an input combiner 12 which combines the various wireless inputs, such as the GSM, PCS and paging inputs into a combined output, typically in the form of a multiplexed signal, and provides the multiplexed signal via respective fiberoptic transmitters 14 and fiberoptic cables 16 to a plurality of remote units 20, which are typically distributed on different floors, or even in different rooms of one or more buildings or any indoor or shadowed areas, depending on the building construction and system requirements.
  • Each remote unit 20 typically comprises a fiberoptic receiver 22 which receives the combined output, which is typically an RF output, and supplies it to a splitter 24 which is connected to individual antennas, such as antennas 30, 28 and 26 for PCS, GSM and paging networks respectively.
  • antennas 30, 28 and 30 preferably has at least one external antenna connection.
  • the splitter divides the combined output into individual output signals, such as, for example, PCS, GSM and paging signals which are sent to respective antennas 30, 28 and 26.
  • Antennas 26, 28 and 30 transmit signals received via combiner 12, transmitters 14, optical fibers 16, receivers 22, and splitters 24 to subscriber units such as cellular telephones 32 and pagers 34 (Fig. 1).
  • antennas 26, 28 and 30 preferably operate in a full duplex mode and also receive signals from subscriber units such as cellular telephones 32 operating on one or more networks, such as, for example, GSM and PCS networks.
  • These signals are supplied to a combiner 42 which combines the various wireless signal inputs, such as the GSM and PCS signals, into a combined output, typically in the form of a multiplexed signal, and provides the multiplexed signal via a fiberoptic transmitter 44 and a fiberoptic cable 46 to base unit 10.
  • Base unit 10 typically comprises a plurality of fiberoptic receivers 48, each corresponding to one of remote units 20, which receive the combined signal over fiberoptic cable 46 and supply it to an output splitter 50, which splits the combined signal into a plurality of individual signal outputs, such as, for example, a GSM output and a PCS output.
  • an output splitter 50 which splits the combined signal into a plurality of individual signal outputs, such as, for example, a GSM output and a PCS output.
  • Fig. 3 illustrates the circuitry of the base unit
  • the fiber optics transmitter typically comprises a laser diode 60.
  • the transmitter 14 employs a vertical cavity surface emitting laser or an edge emitting laser coupled to a single or multi-mode fiber 16.
  • each fiberoptic receiver 48 comprises a photodiode 62 which converts the optical signal to RF.
  • a 10 KHz detector 64 detects and filters out a 10 KHz tone. If the 10 KHz tone is not detected, this is an indication of a break in the communications link and detector 64 causes illumination of a pilot LED 66. Another indication of a break in the communications link is the absence of received light, which may be indicated by an optical alarm 68.
  • Fig. 4 illustrates a soft limiter 100, constructed and operative in accordance with a preferred embodiment of the present invention.
  • Soft limiter 100 may be used at the uplink to prevent laser diode 60 from being overdriven, and thereby prevent non-linear distortion in all of the services distributed.
  • soft limiter 100 protects any of the wireless services from inadvertently increasing input power to base unit 10.
  • Soft limiter 100 preferably includes a switched attenuator 102, a comparator
  • Fig. 5A is a block diagram of part of the circuitry of Fig. 2.
  • jumpers may be used to connect the GSM antenna 28 and the PCS antenna 30 to local and/or remote antennas.
  • a jumper 70 may be used to connect GSM antenna 28 solely to an internal antenna 72.
  • An additional jumper 72 may be used to connect GSM antenna 28 to a local antenna 76, which is preferably the same internal antenna 72, and to a remote antenna 78.
  • Remote antenna 78 preferably is DC powered to allow for amplification and may be connected by coax.
  • Local antenna 76 and remote antenna 78 are preferably connected via a power divider/combiner 80.
  • the foregoing description applies equally for PCS antenna 30, as shown in Fig. 5 A.
  • each GSM antenna 28 and PCS antenna 30 are each input to a low noise amplifier (LNA) 82 via an antenna duplexer 84 in order to enable the same antenna to be used for transmission and reception.
  • LNA low noise amplifier
  • the signals from both the GSM antenna 28 and PCS antenna 30 are combined by combiner 42 and input to fiberoptic transmitter 44.
  • the optical signal from base unit 10 is amplified and demultiplexed by a demultiplexer 85.
  • a demultiplexer 85 Preferably three signals are demultiplexed.
  • a 10 KHz tone is input to transmitter 44
  • a low frequency paging signal is input to paging loop antenna 26
  • an RF signal comprising combined GSM and PCS signals, is input to a demultiplexer 86.
  • These signals are each input to their respective antenna via antenna duplexer 84.
  • a gain control is provided at receiver 22 and transmitter 44. The gain level is controlled by the amplitude of the 10 KHz pilot tone.
  • the simultaneous gain control of the transmitted and received signals determines the size of the local cell.
  • a low frequency data signal may be multiplexed by a multiplexer 90 along with the RF signal.
  • a microprocessor 92 at each remote unit 20 receives the signal. The absence of the signal indicates an alarm status which microprocessor 92 relays to a microprocessor (not shown) at base unit 10.
  • the low frequency data signal may be used for status and control of remote unit 20, and may include the following control parameters: a. Cell size: This controls gains of the transmitted and received signals b. Balance between transmitted and received signals c. Threshold of soft limiter 100.
  • Control parameters may be from base unit 10 or remotely controlled through a network management interface. However, it is sometimes more convenient to set these control parameters locally while the unit is tested in situ.
  • Remote control unit 110 preferably includes a plurality of control buttons, such as a cell size control button 112 and a balance control button 114.
  • control button 112 may control volume
  • control button 114 may control transmit cell balance, such as stereo balance.
  • An additional control button 116 may be provided for controlling threshold of soft limiter 100.
  • the network management apparatus typically comprises a microprocessor 200 which communicates typically via an RS 232 interface 202 and a modem 204 with an external communications network such as an ordinary telephone network.
  • the microprocessor receives status indications from alarm indicators 206 which indicate malfunctions in remote units 20 (Fig. 1) based on receipt of loop back signals therefrom.
  • Microprocessor 200 provides gain control signals to the remote units via a D/A converter 208 and a loop back signal generator 210. Loop back signal generator 210 preferably operates at approximately 10 KHz.
  • FIG. 7 which is an illustration of the use of directional antennas in a system of the type illustrated in Figs. 1 - 6.
  • Fig. 7 shows the use of two such antennas, indicated by reference numerals 220 and 222, which are aimed in different directions. Directionality is achieved by rotating the ground plane around the vertical antenna.
  • Antennas 28 and 30 (Fig. 2) are preferably antennas of this type. This allows for tuning and balancing of cell size once the basic fixed installations have been made. This further allows for future tuning and balancing to overcome obstacles or partitions which may be constructed in the building in the future.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Optical Communication System (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

La présente invention concerne une station de radiocommunications comprenant une unité de base faite de plusieurs éléments. Une interface de communication assure des communications avec plusieurs réseaux de radio communication. Un coupleur émission combine en un seul signal de sortie HF les signaux de communication reçus d'une pluralité de réseaux de radiocommunication. Un coupleur récepteur sépare les signaux de communication préalablement combinés émission de façon à les transmettre à la pluralité de réseaux de radiocommunication en une pluralité de signaux de sortie HF. Un émetteur fibre optique reçoit le signal de sortie HF et fournit un signal de sortie HF correspondant. Un récepteur fibre optique reçoit une entrée optique et fournit un signal de sortie HF véhiculant des signaux de communication préalablement combinés émission. Une pluralité d'unités à distance, comprenant chacune une pluralité d'antennes, assure les communications avec des communicateurs d'une pluralité de réseaux de radiocommunications. Un coupleur récepteur sépare les signaux de communication reçus de l'unité de base et les fournit à la pluralité d'antennes. Un coupleur émission combine en un signal de sortie HF combiné les signaux de communication émis par la pluralité d'antennes. Un émetteur fibre optique reçoit le signal de sortie HF combiné et fournit un signal de sortie optique correspondant. Un récepteur fibre optique reçoit une entrée optique et fournit une sortie HF au coupleur recepteur contenant les signaux de communication émission préalablement reçus. Une première fibre optique connecte chacun des émetteurs fibre optique à l'unité de base à un récepteur fibre optique correspondant dans une unité à distance correspondante. Une seconde fibre optique connecte chaque émetteur fibre optique d'une unité à distance à un récepteur fibre optique correspondant de l'unité de base.
PCT/IL1997/000411 1996-12-15 1997-12-15 Station et systeme de radiocommunications Ceased WO1998027748A2 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP52751698A JP2001506826A (ja) 1996-12-15 1997-12-15 無線通信ステーションおよびシステム
BR9713714-6A BR9713714A (pt) 1996-12-15 1997-12-15 Estação de comunicações sem fio, e, sistemas de comunicações móvel, e de telecomunicações microcelular.
EP97947850A EP0950326A4 (fr) 1996-12-15 1997-12-15 Station et systeme de radiocommunications
AU54082/98A AU735820B2 (en) 1996-12-15 1997-12-15 Wireless communications station and system
CA002275251A CA2275251A1 (fr) 1996-12-15 1997-12-15 Station et systeme de radiocommunications

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
IL119832 1996-12-15
IL11983296A IL119832A (en) 1996-12-15 1996-12-15 Wireless communications systems employing optical fibers
US08/886,695 1997-07-01
US08/886,695 US5969837A (en) 1996-12-15 1997-07-01 Communications system

Publications (2)

Publication Number Publication Date
WO1998027748A2 true WO1998027748A2 (fr) 1998-06-25
WO1998027748A3 WO1998027748A3 (fr) 1998-09-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IL1997/000411 Ceased WO1998027748A2 (fr) 1996-12-15 1997-12-15 Station et systeme de radiocommunications

Country Status (6)

Country Link
EP (1) EP0950326A4 (fr)
JP (1) JP2001506826A (fr)
AU (1) AU735820B2 (fr)
BR (1) BR9713714A (fr)
CA (1) CA2275251A1 (fr)
WO (1) WO1998027748A2 (fr)

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WO2001024453A1 (fr) * 1999-09-29 2001-04-05 Nokia Corporation Reseau de telecommunication multicouche
WO2005029713A3 (fr) * 2003-09-24 2005-05-26 Siemens Ag Dispositif destine a une station radio
FR2868634A1 (fr) * 2004-04-02 2005-10-07 Evolium Sas Soc Par Actions Si Transmission centralisee de flux de donnees provenant de sources radio de technologies differentes, par multiplexage temporel
US7656904B2 (en) 2003-03-13 2010-02-02 Mosaid Technologies Incorporated Telephone system having multiple distinct sources and accessories therefor
US7688841B2 (en) 2003-07-09 2010-03-30 Mosaid Technologies Incorporated Modular outlet
US7697522B2 (en) 2006-11-20 2010-04-13 Broadcom Corporation Systems and methods for aggregation of packets for transmission through a communications network
US7796554B2 (en) 2004-03-29 2010-09-14 Utstarcom Telecom Co., Ltd. Method for resource management and method for traffic guidance in the multimode radio network
US8848725B2 (en) 2000-04-19 2014-09-30 Conversant Intellectual Property Management Incorporated Network combining wired and non-wired segments
US8867523B2 (en) 1998-07-28 2014-10-21 Conversant Intellectual Property Management Incorporated Local area network of serial intelligent cells
US8942220B2 (en) 2010-02-22 2015-01-27 Broadcom Corporation Method and apparatus for policing a flow in a network
US8953594B2 (en) 2010-02-23 2015-02-10 Broadcom Corporation Systems and methods for increasing preambles
US9008086B2 (en) 2006-11-20 2015-04-14 Broadcom Corporation MAC to PHY interface apparatus and methods for transmission of packets through a communications network
US9094226B2 (en) 2000-08-30 2015-07-28 Broadcom Corporation Home network system and method
US9184984B2 (en) 2000-08-30 2015-11-10 Broadcom Corporation Network module
US9531619B2 (en) 2009-04-07 2016-12-27 Broadcom Corporation Channel assessment in an information network
US9554177B2 (en) 2009-03-30 2017-01-24 Broadcom Corporation Systems and methods for retransmitting packets over a network of communication channels
US9602176B2 (en) 2010-10-01 2017-03-21 Commscope Technologies Llc Distributed antenna system for MIMO signals
US9641456B2 (en) 2007-05-31 2017-05-02 Avago Technologies General Ip (Singapore) Pte. Ltd. Apparatus and methods for reduction of transmission delay in a communication network
US9787385B2 (en) 2009-12-09 2017-10-10 Andrew Wireless Systems Gmbh Distributed antenna system for MIMO signals
US9807692B2 (en) 2008-07-31 2017-10-31 Avago Technologies General Ip (Singapore) Pte. Ltd. Systems and methods for providing power management
US10986165B2 (en) 2004-01-13 2021-04-20 May Patents Ltd. Information device

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WO2010091004A1 (fr) * 2009-02-03 2010-08-12 Corning Cable Systems Llc Systèmes et composants d'antennes distribuées à base de fibres optiques, et procédés de calibrage associés
US8867355B2 (en) 2009-07-14 2014-10-21 Broadcom Corporation MoCA multicast handling
US8942250B2 (en) 2009-10-07 2015-01-27 Broadcom Corporation Systems and methods for providing service (“SRV”) node selection

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US8885659B2 (en) 1998-07-28 2014-11-11 Conversant Intellectual Property Management Incorporated Local area network of serial intelligent cells
US8885660B2 (en) 1998-07-28 2014-11-11 Conversant Intellectual Property Management Incorporated Local area network of serial intelligent cells
US8867523B2 (en) 1998-07-28 2014-10-21 Conversant Intellectual Property Management Incorporated Local area network of serial intelligent cells
US8908673B2 (en) 1998-07-28 2014-12-09 Conversant Intellectual Property Management Incorporated Local area network of serial intelligent cells
US7664049B1 (en) 1999-09-29 2010-02-16 Nokia Corporation Multilayer telecommunications network
WO2001024453A1 (fr) * 1999-09-29 2001-04-05 Nokia Corporation Reseau de telecommunication multicouche
US8982903B2 (en) 2000-04-19 2015-03-17 Conversant Intellectual Property Management Inc. Network combining wired and non-wired segments
US8848725B2 (en) 2000-04-19 2014-09-30 Conversant Intellectual Property Management Incorporated Network combining wired and non-wired segments
US8867506B2 (en) 2000-04-19 2014-10-21 Conversant Intellectual Property Management Incorporated Network combining wired and non-wired segments
US8873575B2 (en) 2000-04-19 2014-10-28 Conversant Intellectual Property Management Incorporated Network combining wired and non-wired segments
US8873586B2 (en) 2000-04-19 2014-10-28 Conversant Intellectual Property Management Incorporated Network combining wired and non-wired segments
US8982904B2 (en) 2000-04-19 2015-03-17 Conversant Intellectual Property Management Inc. Network combining wired and non-wired segments
US9184984B2 (en) 2000-08-30 2015-11-10 Broadcom Corporation Network module
US9094226B2 (en) 2000-08-30 2015-07-28 Broadcom Corporation Home network system and method
US10700754B2 (en) 2001-11-30 2020-06-30 Andrew Wireless Systems Gmbh Distributed antenna system for MIMO signals
US7738453B2 (en) 2003-03-13 2010-06-15 Mosaid Technologies Incorporated Telephone system having multiple sources and accessories therefor
US7656904B2 (en) 2003-03-13 2010-02-02 Mosaid Technologies Incorporated Telephone system having multiple distinct sources and accessories therefor
US7688841B2 (en) 2003-07-09 2010-03-30 Mosaid Technologies Incorporated Modular outlet
US7690949B2 (en) 2003-09-07 2010-04-06 Mosaid Technologies Incorporated Modular outlet
CN1857017B (zh) * 2003-09-24 2011-09-21 诺基亚西门子通信有限责任两合公司 用于无线电台的装置
WO2005029713A3 (fr) * 2003-09-24 2005-05-26 Siemens Ag Dispositif destine a une station radio
US10986165B2 (en) 2004-01-13 2021-04-20 May Patents Ltd. Information device
US7796554B2 (en) 2004-03-29 2010-09-14 Utstarcom Telecom Co., Ltd. Method for resource management and method for traffic guidance in the multimode radio network
FR2868634A1 (fr) * 2004-04-02 2005-10-07 Evolium Sas Soc Par Actions Si Transmission centralisee de flux de donnees provenant de sources radio de technologies differentes, par multiplexage temporel
US7697522B2 (en) 2006-11-20 2010-04-13 Broadcom Corporation Systems and methods for aggregation of packets for transmission through a communications network
US9008086B2 (en) 2006-11-20 2015-04-14 Broadcom Corporation MAC to PHY interface apparatus and methods for transmission of packets through a communications network
US9641456B2 (en) 2007-05-31 2017-05-02 Avago Technologies General Ip (Singapore) Pte. Ltd. Apparatus and methods for reduction of transmission delay in a communication network
US9807692B2 (en) 2008-07-31 2017-10-31 Avago Technologies General Ip (Singapore) Pte. Ltd. Systems and methods for providing power management
US9554177B2 (en) 2009-03-30 2017-01-24 Broadcom Corporation Systems and methods for retransmitting packets over a network of communication channels
US9531619B2 (en) 2009-04-07 2016-12-27 Broadcom Corporation Channel assessment in an information network
US9787385B2 (en) 2009-12-09 2017-10-10 Andrew Wireless Systems Gmbh Distributed antenna system for MIMO signals
US8942220B2 (en) 2010-02-22 2015-01-27 Broadcom Corporation Method and apparatus for policing a flow in a network
US8953594B2 (en) 2010-02-23 2015-02-10 Broadcom Corporation Systems and methods for increasing preambles
US9602176B2 (en) 2010-10-01 2017-03-21 Commscope Technologies Llc Distributed antenna system for MIMO signals
US9979443B2 (en) 2010-10-01 2018-05-22 Commscope Technologies Llc Distributed antenna system for MIMO signals
US10491273B2 (en) 2010-10-01 2019-11-26 Commscope Technologies Llc Distributed antenna system for MIMO signals

Also Published As

Publication number Publication date
CA2275251A1 (fr) 1998-06-25
AU5408298A (en) 1998-07-15
JP2001506826A (ja) 2001-05-22
AU735820B2 (en) 2001-07-19
BR9713714A (pt) 2000-06-13
WO1998027748A3 (fr) 1998-09-17
EP0950326A2 (fr) 1999-10-20
EP0950326A4 (fr) 2002-03-13

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