GB2437678A - Base transceiver station (BTS) synchronization - Google Patents

Base transceiver station (BTS) synchronization

Info

Publication number
GB2437678A
GB2437678A GB0715498A GB0715498A GB2437678A GB 2437678 A GB2437678 A GB 2437678A GB 0715498 A GB0715498 A GB 0715498A GB 0715498 A GB0715498 A GB 0715498A GB 2437678 A GB2437678 A GB 2437678A
Authority
GB
United Kingdom
Prior art keywords
lmus
bts
timing
various
btss
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.)
Granted
Application number
GB0715498A
Other versions
GB2437678B (en
GB0715498D0 (en
Inventor
Robert J Anderson
Joseph W Sheehan
Jeffrey F Bull
Benjamin Herman Cohen
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.)
Skyhook Holding Inc
Original Assignee
Trueposition 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 Trueposition Inc filed Critical Trueposition Inc
Publication of GB0715498D0 publication Critical patent/GB0715498D0/en
Publication of GB2437678A publication Critical patent/GB2437678A/en
Application granted granted Critical
Publication of GB2437678B publication Critical patent/GB2437678B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • H04B7/2662—Arrangements for Wireless System Synchronisation
    • H04B7/2671—Arrangements for Wireless Time-Division Multiple Access [TDMA] System Synchronisation
    • H04B7/2678—Time synchronisation
    • H04B7/2684—Synchronisation of a mobile station with more than one base station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
    • H04L7/027—Speed or phase control by the received code signals, the signals containing no special synchronisation information extracting the synchronising or clock signal from the received signal spectrum, e.g. by using a resonant or bandpass circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • 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
    • H04B7/2662—Arrangements for Wireless System Synchronisation
    • H04B7/2671—Arrangements for Wireless Time-Division Multiple Access [TDMA] System Synchronisation
    • H04B7/2678—Time synchronisation
    • H04B7/2687—Inter base stations synchronisation
    • H04B7/2693—Centralised synchronisation, i.e. using external universal time reference, e.g. by using a global positioning system [GPS] or by distributing time reference over the wireline network
    • H04Q7/20—
    • H04Q7/206—
    • H04Q7/208—
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

In a network overlay wireless location solution for a GSM or UMTS communications network, spectrum utilization can be made far more efficient by synchronizing the BTSs which can require distributing a timing signal to all BTSs, or installing a satellite-based timing unit in each site. The present invention provides an architecture in which Location Measurement Units (LMUs) are installed at some or all of the BTS sites for the purpose of locating wireless devices. The LMUs are used to measure the timing of various uplink and/or downlink signals in the cellular network in support of various location techniques. These LMUs may include a GPS-based timing reference module, which may be used to synchronize the time bases of all LMUs. To reduce the overall cost of BTS synchronization, the LMU distributes timing signals, including a periodic electrical pulse as well as time description information, on a serial or other interface, which is available for other nodes to use for synchronization. The format of the electrical pulse and time description information is modified through hardware and software to adapt to the various formats required by various BTS types. For example, the BTSs with co-located LMUs can receive a synchronization signal with little or no hardware cost. The External Interface Unit (EIU) described herein may be used to adapt to various BTS hardware formats. For BTS sites not equipped with an LMU, a Timing Measurement Unit (TMU) can be used. The TMU has the single function of providing BTS time signals in the same formats as provided by the LMUs. The time signals provided by the TMUs are synchronous to the signals provided by the LMUs. This timing-only TMU has a lower cost than the LMU because it does not support the uplink or downlink signal measurement functions. This approach allows a cellular operator to synchronize BTSs at a relatively low cost.
GB0715498A 2005-02-11 2005-04-25 Base transceiver station (BTS) synchronization Expired - Fee Related GB2437678B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US65226505P 2005-02-11 2005-02-11
PCT/US2005/014188 WO2006088472A1 (en) 2005-02-11 2005-04-25 Base transceiver station (bts) synchronization

Publications (3)

Publication Number Publication Date
GB0715498D0 GB0715498D0 (en) 2007-09-26
GB2437678A true GB2437678A (en) 2007-10-31
GB2437678B GB2437678B (en) 2009-06-10

Family

ID=36916764

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0715498A Expired - Fee Related GB2437678B (en) 2005-02-11 2005-04-25 Base transceiver station (BTS) synchronization

Country Status (11)

Country Link
EP (1) EP1847132A4 (en)
JP (1) JP4750138B2 (en)
KR (1) KR20070114286A (en)
CN (1) CN101112107B (en)
AU (1) AU2005327593B2 (en)
BR (1) BRPI0520026A2 (en)
CA (1) CA2595365C (en)
GB (1) GB2437678B (en)
IL (1) IL184979A (en)
MX (1) MX2007009322A (en)
WO (1) WO2006088472A1 (en)

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US8055270B1 (en) * 2005-12-23 2011-11-08 At&T Mobility Ii Llc System and method for providing location information for a mobile handset
US8000702B2 (en) 2006-05-16 2011-08-16 Andrew, Llc Optimizing location services performance by combining user plane and control plane architectures
US8000701B2 (en) 2006-05-16 2011-08-16 Andrew, Llc Correlation mechanism to communicate in a dual-plane architecture
US8019339B2 (en) 2006-05-16 2011-09-13 Andrew Llc Using serving area identification in a mixed access network environment
WO2008097694A1 (en) 2007-02-05 2008-08-14 Andrew Corporation System and method for optimizing location estimate of mobile unit
US8045506B2 (en) 2007-04-18 2011-10-25 Trueposition, Inc. Sparsed U-TDOA wireless location networks
US8140092B2 (en) 2007-04-18 2012-03-20 Trueposition, Inc. Sparsed U-TDOA wireless location networks
US8041367B2 (en) 2007-04-18 2011-10-18 Trueposition, Inc. Sparsed U-TDOA wireless location networks
US8242959B2 (en) 2007-04-18 2012-08-14 Trueposition, Inc. Sparsed U-TDOA wireless location networks
US8331953B2 (en) 2007-05-01 2012-12-11 Andrew Llc System and method for estimating the location of a mobile device
US7933610B2 (en) 2007-05-21 2011-04-26 Andrew Llc Method and apparatus to select an optimum site and/or sector to provide geo-location data
US8170585B2 (en) 2007-11-14 2012-05-01 Andrew, Llc Ranging in UMTS networks
US7800530B2 (en) 2007-12-07 2010-09-21 Andrew, Llc Method and system for providing assistance data for A-GPS location of handsets in wireless networks
US8213405B2 (en) 2008-02-01 2012-07-03 Qualcomm Incorporated Wireless network synchronization
US8213955B2 (en) 2008-05-01 2012-07-03 Andrew, Llc Network measurement report caching for location of mobile devices
US8073463B2 (en) 2008-10-06 2011-12-06 Andrew, Llc System and method of UMTS UE location using uplink dedicated physical control channel and downlink synchronization channel
US8762519B2 (en) 2008-10-28 2014-06-24 Andrew Llc System and method for providing location services for multiple access networks from a single location server
US8125377B2 (en) 2008-11-17 2012-02-28 Andrew Llc System and method for determining the location of a mobile device
US7940213B2 (en) 2008-11-24 2011-05-10 Andrew, Llc System and method for determining falsified satellite measurements
US8035557B2 (en) 2008-11-24 2011-10-11 Andrew, Llc System and method for server side detection of falsified satellite measurements
US8249622B2 (en) 2008-11-26 2012-08-21 Andrew, Llc System and method for multiple range estimation location
US8160609B2 (en) * 2008-11-26 2012-04-17 Andrew Llc System and method for multiple range estimation location
US8380222B2 (en) 2008-11-26 2013-02-19 Andrew Llc System and method for multiple range estimation location
US7916071B2 (en) 2008-12-23 2011-03-29 Andrew, Llc System and method for determining a reference location of a mobile device
US7986266B2 (en) 2009-03-13 2011-07-26 Andrew, Llc Method and system for selecting optimal satellites in view
US8301160B2 (en) 2009-03-16 2012-10-30 Andrew Llc System and method for SUPL roaming using a held client
US8239483B2 (en) 2009-03-16 2012-08-07 Andrew, Llc System and method for generic application of location determination for network attached devices
US8391884B2 (en) 2009-03-26 2013-03-05 Andrew Llc System and method for managing created location contexts in a location server
US8462769B2 (en) 2009-03-26 2013-06-11 Andrew Llc System and method for managing created location contexts in a location server
US8290510B2 (en) 2009-06-11 2012-10-16 Andrew Llc System and method for SUPL held interworking
EP2462461A1 (en) 2009-08-05 2012-06-13 Andrew LLC System and method for hybrid location in an lte network
US8340683B2 (en) 2009-09-21 2012-12-25 Andrew, Llc System and method for a high throughput GSM location solution
US8289210B2 (en) 2009-10-15 2012-10-16 Andrew Llc Location measurement acquisition adaptive optimization
US8188920B2 (en) 2009-10-15 2012-05-29 Andrew, Llc Location measurement acquisition optimization with Monte Carlo simulation
US8718673B2 (en) 2010-05-21 2014-05-06 Maple Acquisition Llc System and method for location assurance of a mobile device
US8958754B2 (en) 2010-09-29 2015-02-17 Andrew, Llc System and method for sub-coherent integration for geo-location using weak or intermittent signals
US8489122B2 (en) 2010-12-09 2013-07-16 Andrew Llc System and method for total flight time ratio pattern matching
EP2676500A1 (en) 2011-02-14 2013-12-25 Andrew LLC Method for mobile location by dynamic clustering
US9715001B2 (en) 2011-06-13 2017-07-25 Commscope Technologies Llc Mobile location in a remote radio head environment
US9423508B2 (en) 2012-01-12 2016-08-23 Commscope Technologies Llc Autonomous Transmit Chain Delay Measurements
US8897813B2 (en) 2012-02-03 2014-11-25 Andrew Llc LTE user equipment positioning system and method
US10775749B2 (en) 2015-04-17 2020-09-15 The Mitre Corporation Robust and resilient timing architecture for critical infrastructure
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Publication number Priority date Publication date Assignee Title
US20040092275A1 (en) * 2000-05-04 2004-05-13 Norman Krasner Methods and apparatuses for using mobile GPS receivers to synchronize basestations in cellular networks
US20040203865A1 (en) * 2002-04-15 2004-10-14 Krasner Norman F. Methods and apparatuses for measuring frequencies of basestations in cellular networks using mobile GPS receivers

Also Published As

Publication number Publication date
MX2007009322A (en) 2007-09-21
EP1847132A4 (en) 2009-09-02
IL184979A (en) 2012-10-31
JP4750138B2 (en) 2011-08-17
CN101112107B (en) 2011-11-09
CA2595365A1 (en) 2006-08-24
JP2008530901A (en) 2008-08-07
AU2005327593A1 (en) 2006-08-24
GB2437678B (en) 2009-06-10
KR20070114286A (en) 2007-11-30
AU2005327593B2 (en) 2009-10-22
BRPI0520026A2 (en) 2009-05-12
WO2006088472A1 (en) 2006-08-24
CN101112107A (en) 2008-01-23
EP1847132A1 (en) 2007-10-24
CA2595365C (en) 2013-01-22
GB0715498D0 (en) 2007-09-26
IL184979A0 (en) 2007-12-03

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20160425