JP2007521764A - 受信/発信同期によるグループ通話管理 - Google Patents
受信/発信同期によるグループ通話管理 Download PDFInfo
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- JP2007521764A JP2007521764A JP2006534311A JP2006534311A JP2007521764A JP 2007521764 A JP2007521764 A JP 2007521764A JP 2006534311 A JP2006534311 A JP 2006534311A JP 2006534311 A JP2006534311 A JP 2006534311A JP 2007521764 A JP2007521764 A JP 2007521764A
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- JP
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- Prior art keywords
- synchronization
- transceiver
- group
- transceivers
- synchronization information
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- 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.)
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-
- 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
- H04B7/269—Master/slave synchronisation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/713—Spread spectrum techniques using frequency hopping
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
- H04W56/002—Mutual synchronization
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/0035—Synchronisation arrangements detecting errors in frequency or phase
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/16—Interfaces between hierarchically similar devices
- H04W92/18—Interfaces between hierarchically similar devices between terminal devices
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Time-Division Multiplex Systems (AREA)
Abstract
Description
例では、3つのプレアンブル210が発信される。受信側は、プレアンブル210のうちの1つが検出されるまで、プレアンブル210の所定周波数の探査を継続する。例えば、第1のプレアンブル、第2のプレアンブルの発信された周波数が使用中である場合、受信側は第1のプレアンブル、第2のプレアンブルを検出しない。しかしながら、第3のプレアンブルの発信されている周波数が別の発信側デバイスにより使用中でない場合、受信側は第3のプレアンブルを検出し得る。
ープに同期されていない場合、同期フレームは、グループ同期を確立させるために用いられる同期情報を含み得る。通話グループのハング時間が経過した場合、又は、初期同期後にトランシーバがグループに加入している場合などがこれに当たる。初期同期後にトランシーバがグループに加入している場合、通話グループ内の別のトランシーバが現在発信していない限り、他のメンバーは新たなトランシーバに再び同期する。
Claims (10)
- トランシーバによる通信方法であって、
移動体トランシーバから同期情報を受信する同期情報受信工程と、
同期情報を用いて移動体トランシーバに同期する同期工程と、
所定条件が満たされるまで移動体発信器との同期を維持する同期維持工程とからなる方法。 - 所定条件は所定量のグループ休止を含む請求項1に記載の方法。
- 同期情報受信工程はタイミングオフセット及び周波数オフセットを受信する工程を含む請求項1に記載の方法。
- 移動体トランシーバと同期されたタイムスロットにてプレアンブルを含む伝送要求を発信する工程を含む請求項1に記載の方法。
- 伝送要求は同期情報を含む請求項4に記載の方法。
- 同期されたタイムスロットをランダムに選択する工程を含む請求項4に記載の方法。
- システム不在グループ環境において実行される請求項1に記載の方法。
- トランシーバによる通信方法であって、
1つ以上のトランシーバに同1つ以上のトランシーバとのグループ同期を確立させる同期情報を発信する同期情報発信工程と、
所定条件が満たされるまで同1つ以上のトランシーバとの同期を維持する同期維持工程とからなる方法。 - 所定条件は所定量のグループ休止を含む請求項8に記載の方法。
- 同期情報発信工程はタイミングオフセット及び周波数オフセットを発信する工程を含む請求項8に記載の方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/682,772 US7366532B2 (en) | 2003-10-09 | 2003-10-09 | Group call management through receive/transmit synchronization |
PCT/US2004/033008 WO2005036801A2 (en) | 2003-10-09 | 2004-10-07 | Group call management through receive/transmit synchronization |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2007521764A true JP2007521764A (ja) | 2007-08-02 |
JP2007521764A5 JP2007521764A5 (ja) | 2007-11-22 |
JP4637109B2 JP4637109B2 (ja) | 2011-02-23 |
Family
ID=34422610
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006534311A Expired - Fee Related JP4637109B2 (ja) | 2003-10-09 | 2004-10-07 | 受信/発信同期によるグループ通話管理 |
Country Status (7)
Country | Link |
---|---|
US (1) | US7366532B2 (ja) |
EP (1) | EP1673894A4 (ja) |
JP (1) | JP4637109B2 (ja) |
KR (1) | KR100886098B1 (ja) |
CN (1) | CN101313499B (ja) |
AU (1) | AU2004306745B2 (ja) |
WO (1) | WO2005036801A2 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2015503885A (ja) * | 2012-01-13 | 2015-02-02 | アップル インコーポレイテッド | ピアツーピアネットワーク環境内での同期局の選択 |
JP2015511422A (ja) * | 2012-01-19 | 2015-04-16 | 大唐移▲動▼通信▲設▼▲備▼有限公司 | クラスタユーザに基づいたメッセージ送信方法とデバイス |
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US7814188B2 (en) * | 2003-12-16 | 2010-10-12 | Honeywell International Inc. | Synchronized wireless communications system |
JP4335090B2 (ja) * | 2004-05-14 | 2009-09-30 | シャープ株式会社 | 移動端末装置 |
US7223612B2 (en) * | 2004-07-26 | 2007-05-29 | Infineon Technologies Ag | Alignment of MTJ stack to conductive lines in the absence of topography |
EP1780984A4 (en) * | 2004-08-06 | 2012-05-30 | Sharp Kk | TRANSMITTER, RECEIVER, COMMUNICATION SYSTEM, COMMUNICATION METHOD, AND COMMUNICATION PROGRAM |
US8051182B2 (en) * | 2005-01-28 | 2011-11-01 | Sharp Kabushiki Kaisha | Communication device, communication system, communication method, communication program, and communication circuit |
US8284684B2 (en) * | 2005-01-28 | 2012-10-09 | Sharp Kabushiki Kaisha | Communication device, communication system, communication method, and communication circuit |
US8291273B2 (en) * | 2005-01-28 | 2012-10-16 | Sharp Kabushiki Kaisha | Communication device, non-transitory computer-readable medium storing a communication program |
US7787391B2 (en) * | 2005-01-28 | 2010-08-31 | Sharp Kabushiki Kaisha | Communication device, communication system, communication method, communication program, and communication circuit |
CA2582184C (en) * | 2005-04-07 | 2012-12-18 | Mitsubishi Electric Corporation | Mobile object information sharing system |
US20060251107A1 (en) * | 2005-04-21 | 2006-11-09 | Geren Bruce E | Method and system for collision avoidance in wireless communications |
JP4835951B2 (ja) * | 2005-11-04 | 2011-12-14 | 日本電気株式会社 | 無線通信システムとその送信電力制御方法 |
CN101305580B (zh) * | 2005-11-10 | 2012-01-18 | 夏普株式会社 | 数据发送装置及其控制方法、数据接收装置及其控制方法、数据发送系统、数据发送装置控制程序、数据接收装置控制程序以及记录有该程序的记录介质 |
WO2008011717A1 (en) * | 2006-07-28 | 2008-01-31 | Nortel Networks Limited | Multi-hop network topology system and method |
JP4219950B2 (ja) * | 2006-10-16 | 2009-02-04 | シャープ株式会社 | 通信機器、通信方法、通信回路、携帯電話機、プログラム、およびプログラムを記録したコンピュータ読み取り可能な記録媒体 |
US7990944B2 (en) * | 2007-09-06 | 2011-08-02 | Wi-Lan, Inc. | Contention-based communication |
US9326135B2 (en) * | 2008-02-21 | 2016-04-26 | Google Technology Holdings LLC | Method and apparatus for secure communication in a digital two way radio protocol |
US8687619B2 (en) * | 2008-11-04 | 2014-04-01 | Telefonaktiebolaget Lm Ericsson (Publ) | System and method of downlinking data to an unsynchronized user equipment in a telecommunications network |
EP2429105B1 (en) | 2010-09-13 | 2013-03-27 | Ntt Docomo, Inc. | Node in a wireless system with time and clock frequency synchronizing and corresponding method |
US9516615B2 (en) | 2011-11-18 | 2016-12-06 | Apple Inc. | Selection of synchronization stations in a peer-to-peer network environment |
US20130132500A1 (en) | 2011-11-18 | 2013-05-23 | Apple Inc. | Selection of a master in a peer-to-peer network environment |
US10271293B2 (en) | 2011-11-18 | 2019-04-23 | Apple Inc. | Group formation within a synchronized hierarchy of peer-to-peer devices |
TWI533732B (zh) * | 2012-01-13 | 2016-05-11 | 蘋果公司 | 在點對點網路環境中的裝置同步 |
US9651672B2 (en) | 2012-09-25 | 2017-05-16 | Intel Corporation | Systems and methods for time synchronization |
US10003642B2 (en) | 2013-06-28 | 2018-06-19 | Apple Inc. | Operating a cluster of peer-to-peer devices |
CN105792192B (zh) * | 2016-02-25 | 2017-08-15 | 深圳普创天信科技发展有限公司 | 无线通信方法及系统 |
WO2020024199A1 (en) * | 2018-08-02 | 2020-02-06 | Texas Instruments Incorporated | High speed flexled digital interface |
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JP2000082989A (ja) * | 1998-07-28 | 2000-03-21 | Canon Inc | 通信方法及び装置 |
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2003
- 2003-10-09 US US10/682,772 patent/US7366532B2/en active Active
-
2004
- 2004-10-07 KR KR1020067006819A patent/KR100886098B1/ko not_active IP Right Cessation
- 2004-10-07 JP JP2006534311A patent/JP4637109B2/ja not_active Expired - Fee Related
- 2004-10-07 EP EP20040794381 patent/EP1673894A4/en not_active Withdrawn
- 2004-10-07 WO PCT/US2004/033008 patent/WO2005036801A2/en active IP Right Grant
- 2004-10-07 AU AU2004306745A patent/AU2004306745B2/en not_active Ceased
- 2004-10-07 CN CN200480029619XA patent/CN101313499B/zh not_active Expired - Fee Related
Patent Citations (7)
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JPH08298687A (ja) * | 1995-04-26 | 1996-11-12 | Hitachi Ltd | 無線通信システムおよび移動無線端末装置 |
JP2000513526A (ja) * | 1996-06-24 | 2000-10-10 | クゥアルコム・インコーポレイテッド | ディスパッチシステム内での効率的なシステムアクセスのための方法と装置 |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015503885A (ja) * | 2012-01-13 | 2015-02-02 | アップル インコーポレイテッド | ピアツーピアネットワーク環境内での同期局の選択 |
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JP2015511422A (ja) * | 2012-01-19 | 2015-04-16 | 大唐移▲動▼通信▲設▼▲備▼有限公司 | クラスタユーザに基づいたメッセージ送信方法とデバイス |
Also Published As
Publication number | Publication date |
---|---|
WO2005036801A2 (en) | 2005-04-21 |
US20050079883A1 (en) | 2005-04-14 |
CN101313499B (zh) | 2011-03-16 |
WO2005036801A3 (en) | 2008-06-19 |
AU2004306745A1 (en) | 2005-04-21 |
US7366532B2 (en) | 2008-04-29 |
JP4637109B2 (ja) | 2011-02-23 |
EP1673894A2 (en) | 2006-06-28 |
KR100886098B1 (ko) | 2009-02-27 |
CN101313499A (zh) | 2008-11-26 |
KR20060085673A (ko) | 2006-07-27 |
AU2004306745B2 (en) | 2007-08-02 |
EP1673894A4 (en) | 2011-08-03 |
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