DE19881986T1 - Luftrahmen-Synchronisation - Google Patents

Luftrahmen-Synchronisation

Info

Publication number
DE19881986T1
DE19881986T1 DE19881986T DE19881986T DE19881986T1 DE 19881986 T1 DE19881986 T1 DE 19881986T1 DE 19881986 T DE19881986 T DE 19881986T DE 19881986 T DE19881986 T DE 19881986T DE 19881986 T1 DE19881986 T1 DE 19881986T1
Authority
DE
Germany
Prior art keywords
airframe
synchronization
airframe synchronization
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.)
Withdrawn
Application number
DE19881986T
Other languages
English (en)
Inventor
Henrik Nyberg
Randall Glenn Bright
John Mark Freeze
Thomas Oestman
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.)
Unwired Planet International Ltd
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of DE19881986T1 publication Critical patent/DE19881986T1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • H04J3/0682—Clock or time synchronisation in a network by delay compensation, e.g. by compensation of propagation delay or variations thereof, by ranging
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
    • H04J3/0647—Synchronisation among TDM nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
    • H04J3/1605—Fixed allocated frame structures
    • H04J3/1623—Plesiochronous digital hierarchy [PDH]
DE19881986T 1997-01-31 1998-01-26 Luftrahmen-Synchronisation Withdrawn DE19881986T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9702026A GB2321827B (en) 1997-01-31 1997-01-31 Telecommunications system
PCT/EP1998/000421 WO1998034359A1 (en) 1997-01-31 1998-01-26 Air frame synchronisation

Publications (1)

Publication Number Publication Date
DE19881986T1 true DE19881986T1 (de) 1999-12-16

Family

ID=10806899

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19881986T Withdrawn DE19881986T1 (de) 1997-01-31 1998-01-26 Luftrahmen-Synchronisation

Country Status (9)

Country Link
US (1) US6198736B1 (de)
JP (1) JP4404967B2 (de)
CN (1) CN1139202C (de)
AU (1) AU746594B2 (de)
BR (1) BR9806812A (de)
CA (1) CA2279318C (de)
DE (1) DE19881986T1 (de)
GB (1) GB2321827B (de)
WO (1) WO1998034359A1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2362783B (en) * 2000-05-26 2002-08-07 Motorola Inc Mobile radio communication system and method of operating a mobile radio communication system
US6950414B1 (en) 2000-10-17 2005-09-27 Ericsson Inc. Cable carrying communications data and timing data to radio heads
US7180915B2 (en) * 2001-12-21 2007-02-20 Nokia Corporation Apparatus, and an associated method, for facilitating synchronization in a wireless mesh network
US7508810B2 (en) 2005-01-31 2009-03-24 Airbiquity Inc. Voice channel control of wireless packet data communications
CN101465709B (zh) * 2007-12-19 2011-06-15 华东电网有限公司 一种脉冲帧的发送和接收方法
US8036600B2 (en) 2009-04-27 2011-10-11 Airbiquity, Inc. Using a bluetooth capable mobile phone to access a remote network
US8418039B2 (en) 2009-08-03 2013-04-09 Airbiquity Inc. Efficient error correction scheme for data transmission in a wireless in-band signaling system
US8249865B2 (en) 2009-11-23 2012-08-21 Airbiquity Inc. Adaptive data transmission for a digital in-band modem operating over a voice channel
US8848825B2 (en) 2011-09-22 2014-09-30 Airbiquity Inc. Echo cancellation in wireless inband signaling modem
CA3047934A1 (en) * 2016-12-21 2018-06-28 Centre For Development Of Telematics (C-Dot) A method and a mirrored serial interface (msi) for transferring data

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5324761B1 (de) * 1968-10-11 1978-07-22
US4592050A (en) 1984-03-29 1986-05-27 International Business Machines Corporation Apparatus and method for providing a transparent interface across a satellite communications link
JPS612435A (ja) 1984-06-14 1986-01-08 Nec Corp 受信位置予測装置
EP0236968A3 (de) * 1986-03-10 1989-04-19 Siemens Aktiengesellschaft Verfahren zur Übertragung digitaler Signale bei Mobilfunksystemen
CA2033309C (en) * 1989-12-27 1998-02-10 Seiji Kondo Frame synchronization system among multiple radio base stations for tdma digital mobile communications system
JP2924060B2 (ja) * 1990-03-30 1999-07-26 日本電気株式会社 デジタル移動通信システム
US5416778A (en) 1992-06-26 1995-05-16 U.S. Philips Corporation Digital radio communication system and primary and secondary station for use in such a system
GB9302975D0 (en) * 1993-02-15 1993-03-31 Shaye Communications Ltd Improvements relating to duplex communications systems
JP3347387B2 (ja) 1993-03-16 2002-11-20 株式会社東芝 Ｌａｎ制御プロセッサ
JP3071338B2 (ja) * 1993-04-30 2000-07-31 沖電気工業株式会社 スーパーフレーム送出タイミング指定装置
IT1265155B1 (it) * 1993-07-14 1996-10-31 Italtel Spa Procedimento e dispositivo per equalizzare l'istante di trasmissione di una pluralita' di stazioni radio base
US5473668A (en) * 1993-07-21 1995-12-05 Nec Corporation Digital cordless telephone system readily capable of setting up
JPH0746660A (ja) * 1993-07-28 1995-02-14 Nippon Telegr & Teleph Corp <Ntt> 無線通信装置
DE69433458T2 (de) 1993-10-13 2004-11-25 Ntt Docomo Inc. Verfahren und geraet zum umschalten von funkverbindungen in der mobilen kommunikation
JP3403784B2 (ja) 1993-12-10 2003-05-06 富士通テン株式会社 デジタル通信の同期保護方法
US5440562A (en) 1993-12-27 1995-08-08 Motorola, Inc. Communication through a channel having a variable propagation delay
JPH07297776A (ja) * 1994-04-22 1995-11-10 Oki Electric Ind Co Ltd 通信システム
JPH07298347A (ja) * 1994-04-25 1995-11-10 Oki Electric Ind Co Ltd 基地局従属同期方法及び集中制御局
US5586119A (en) * 1994-08-31 1996-12-17 Motorola, Inc. Method and apparatus for packet alignment in a communication system
US5530704A (en) * 1995-02-16 1996-06-25 Motorola, Inc. Method and apparatus for synchronizing radio ports in a commnuication system
JP3440389B2 (ja) * 1995-02-20 2003-08-25 松下電器産業株式会社 ディジタルシステムコードレス電話装置
US6226515B1 (en) * 1995-05-31 2001-05-01 Siemens Aktiengesellschaft Cellular cordless telecommunications system
US5828670A (en) * 1995-06-06 1998-10-27 Symmetricom, Inc. Distribution of synchronization in a synchronous optical environment
DE19523489A1 (de) * 1995-06-28 1997-01-02 Sel Alcatel Ag Verfahren und Schaltungsanordnung zur Synchronisation von Impulsrahmen in multizellularen Telekommunikationsanlagen
US5666366A (en) * 1996-05-24 1997-09-09 National Semiconductor Corporation Inter-base synchronization technique for a TDMA communication system
US5953637A (en) * 1996-12-20 1999-09-14 Airnet Communications Corporation Time slot recovery for remote in-band translator in time division multiple access wireless system

Also Published As

Publication number Publication date
WO1998034359A1 (en) 1998-08-06
GB9702026D0 (en) 1997-03-19
CA2279318A1 (en) 1998-08-06
BR9806812A (pt) 2000-05-09
CN1139202C (zh) 2004-02-18
JP4404967B2 (ja) 2010-01-27
GB2321827A (en) 1998-08-05
AU6097798A (en) 1998-08-25
JP2001509980A (ja) 2001-07-24
US6198736B1 (en) 2001-03-06
AU746594B2 (en) 2002-05-02
CN1246994A (zh) 2000-03-08
CA2279318C (en) 2005-05-03
GB2321827B (en) 2001-06-13

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
R082 Change of representative

Representative=s name: DF-MP, DE

R081 Change of applicant/patentee

Owner name: UNWIRED PLANET INTERNATIONAL LTD., IE

Free format text: FORMER OWNER: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), STOCKHOLM, SE

Effective date: 20131108

Owner name: UNWIRED PLANET LLC, US

Free format text: FORMER OWNER: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), STOCKHOLM, SE

Effective date: 20131108

R082 Change of representative

Representative=s name: DF-MP DOERRIES FRANK-MOLNIA & POHLMAN PATENTAN, DE

Effective date: 20131108

Representative=s name: DF-MP, DE

Effective date: 20131108

R082 Change of representative

Representative=s name: DF-MP DOERRIES FRANK-MOLNIA & POHLMAN PATENTAN, DE

R081 Change of applicant/patentee

Owner name: UNWIRED PLANET INTERNATIONAL LTD., IE

Free format text: FORMER OWNER: UNWIRED PLANET LLC, RENO, NEV., US

Effective date: 20140731

R082 Change of representative

Representative=s name: DF-MP DOERRIES FRANK-MOLNIA & POHLMAN PATENTAN, DE

Effective date: 20140731

R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee