CN1246994A - 空中帧同步 - Google Patents
空中帧同步 Download PDFInfo
- Publication number
- CN1246994A CN1246994A CN98802239.7A CN98802239A CN1246994A CN 1246994 A CN1246994 A CN 1246994A CN 98802239 A CN98802239 A CN 98802239A CN 1246994 A CN1246994 A CN 1246994A
- Authority
- CN
- China
- Prior art keywords
- frame
- signal
- synchronizing signal
- air frame
- data
- 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
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims description 30
- 230000001360 synchronised effect Effects 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 4
- 230000001413 cellular effect Effects 0.000 claims description 2
- 238000005259 measurement Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims 1
- 230000001934 delay Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 7
- 230000000630 rising effect Effects 0.000 description 7
- 208000026079 recessive X-linked ichthyosis Diseases 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000012795 verification Methods 0.000 description 4
- 238000006467 substitution reaction Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
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]
Abstract
Description
Claims (30)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9702026A GB2321827B (en) | 1997-01-31 | 1997-01-31 | Telecommunications system |
GB9702026.7 | 1997-01-31 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1246994A true CN1246994A (zh) | 2000-03-08 |
CN1139202C CN1139202C (zh) | 2004-02-18 |
Family
ID=10806899
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB988022397A Expired - Fee Related CN1139202C (zh) | 1997-01-31 | 1998-01-26 | 空中帧同步 |
Country Status (9)
Country | Link |
---|---|
US (1) | US6198736B1 (zh) |
JP (1) | JP4404967B2 (zh) |
CN (1) | CN1139202C (zh) |
AU (1) | AU746594B2 (zh) |
BR (1) | BR9806812A (zh) |
CA (1) | CA2279318C (zh) |
DE (1) | DE19881986T1 (zh) |
GB (1) | GB2321827B (zh) |
WO (1) | WO1998034359A1 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
Families Citing this family (9)
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 |
US8073440B2 (en) | 2009-04-27 | 2011-12-06 | Airbiquity, Inc. | Automatic gain control in a personal navigation device |
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 |
US11567893B2 (en) * | 2016-12-21 | 2023-01-31 | Centre For Development Of Telematics (C-Dot) | Method and a mirrored serial interface (MSI) for transferring data |
Family Cites Families (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5324761B1 (zh) * | 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 |
US5293380A (en) * | 1989-12-27 | 1994-03-08 | Nec Corporation | 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 |
JPH10506775A (ja) * | 1995-05-31 | 1998-06-30 | ジーメンス アクティエンゲゼルシャフト | セル方式の無線通信システム |
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 |
-
1997
- 1997-01-31 GB GB9702026A patent/GB2321827B/en not_active Expired - Fee Related
-
1998
- 1998-01-26 BR BR9806812-1A patent/BR9806812A/pt not_active IP Right Cessation
- 1998-01-26 JP JP53251698A patent/JP4404967B2/ja not_active Expired - Fee Related
- 1998-01-26 AU AU60977/98A patent/AU746594B2/en not_active Ceased
- 1998-01-26 CN CNB988022397A patent/CN1139202C/zh not_active Expired - Fee Related
- 1998-01-26 WO PCT/EP1998/000421 patent/WO1998034359A1/en active IP Right Grant
- 1998-01-26 CA CA002279318A patent/CA2279318C/en not_active Expired - Fee Related
- 1998-01-26 DE DE19881986T patent/DE19881986T1/de not_active Withdrawn
- 1998-01-30 US US09/015,952 patent/US6198736B1/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
Also Published As
Publication number | Publication date |
---|---|
US6198736B1 (en) | 2001-03-06 |
AU6097798A (en) | 1998-08-25 |
DE19881986T1 (de) | 1999-12-16 |
JP2001509980A (ja) | 2001-07-24 |
BR9806812A (pt) | 2000-05-09 |
GB2321827A (en) | 1998-08-05 |
JP4404967B2 (ja) | 2010-01-27 |
GB9702026D0 (en) | 1997-03-19 |
CN1139202C (zh) | 2004-02-18 |
WO1998034359A1 (en) | 1998-08-06 |
GB2321827B (en) | 2001-06-13 |
CA2279318C (en) | 2005-05-03 |
CA2279318A1 (en) | 1998-08-06 |
AU746594B2 (en) | 2002-05-02 |
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Legal Events
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C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: UNWIRED PLANET INC. Free format text: FORMER OWNER: CLUSTER CO., LTD. Effective date: 20130705 Owner name: CLUSTER CO., LTD. Free format text: FORMER OWNER: TELEFONAKTIEBOLAGET LM ERICSSON (SE) S-126 25 STOCKHOLM, SWEDEN Effective date: 20130705 |
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C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20130705 Address after: Nevada Patentee after: Wireless Planet LLC Address before: Delaware Patentee before: Clastres LLC Effective date of registration: 20130705 Address after: Delaware Patentee after: Clastres LLC Address before: Stockholm Patentee before: Telefonaktiebolaget LM Ericsson |
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CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040218 Termination date: 20150126 |
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EXPY | Termination of patent right or utility model |