JP6490327B2 - 地上無線局 - Google Patents
地上無線局 Download PDFInfo
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- JP6490327B2 JP6490327B2 JP2018566991A JP2018566991A JP6490327B2 JP 6490327 B2 JP6490327 B2 JP 6490327B2 JP 2018566991 A JP2018566991 A JP 2018566991A JP 2018566991 A JP2018566991 A JP 2018566991A JP 6490327 B2 JP6490327 B2 JP 6490327B2
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- 238000004891 communication Methods 0.000 claims description 139
- 238000012544 monitoring process Methods 0.000 claims description 33
- 238000012790 confirmation Methods 0.000 claims description 23
- 230000005540 biological transmission Effects 0.000 description 55
- 238000000034 method Methods 0.000 description 37
- 230000008569 process Effects 0.000 description 32
- 238000010586 diagram Methods 0.000 description 28
- 238000012545 processing Methods 0.000 description 27
- 230000004044 response Effects 0.000 description 16
- 230000006870 function Effects 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000008570 general process Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L15/00—Indicators provided on the vehicle or vehicle train for signalling purposes ; On-board control or communication systems
- B61L15/0018—Communication with or on the vehicle or vehicle train
- B61L15/0027—Radio-based, e.g. using GSM-R
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
- B61L27/70—Details of trackside communication
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/22—Indexing; Data structures therefor; Storage structures
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/26—Resource reservation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
- H04W36/324—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data by mobility data, e.g. speed data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties
Description
図1にこの発明の実施の形態1に係る無線通信システムの構成例を示す。図1の例では、列車100に移動無線局(移動局)600が備えられており、列車100が走行する線路が移動局600の移動経路である。図1では、地上無線局(地上局)200(2001−2003)が線路沿いに設置されており、地上局2001−2003はそれぞれ通信エリア220(2201−2203)を有している。移動局600は自装置が存在する通信エリア220に対応する地上局200に接続し、接続した地上局200と制御情報の送受信を行う。ここで移動局600が送信する制御情報とは、例えば列車位置情報、列車進行方向であり、移動局600が受信する制御情報とは、例えば速度情報、列車走行許可位置情報、速度制限情報、通信先地上局の切り替え位置情報である。制御局400は、それぞれの地上局200と接続し、移動局600と地上局200間の制御情報の送受信に加え、地上局200間で行われる無線リソースの予約処理を仲介する装置である。地上局200と制御局400の接続は有線、無線のいずれでも良いが、ここでは有線で接続されているものとする。図1は無線通信システムの構成例を示すものであり、この発明は図1の構成に限定されない。
実施の形態2では、制御局と地上無線局を一体の装置にして配置する形態について説明する。図12にこの実施の形態に係る無線通信システムの構成例を示す。図1と図12の違いは、図12では制御局が配置されておらず、制御局の機能を備えた地上無線局800(8001−8003)が図1における地上無線局200の代わりに配置されている点である。
Claims (3)
- 移動無線局の移動経路に沿って設置される複数の地上無線局を含み、前記移動無線局が移動に伴って接続する前記地上無線局を切り替える無線通信システムの前記地上無線局であって、
前記移動無線局が自装置に隣接する他の前記地上無線局と自装置の前に通信する場合に、前記移動無線局用に無線リソースを確保する無線制御部と、
他の前記地上無線局に対して前記移動無線局から送信された無線信号を監視する通信状態監視部と、を備え、
前記通信状態監視部は、前記無線信号が定められた時間受信されないことを検知すると、前記移動無線局と他の前記地上無線局間の通信状態の確認を行い、
前記無線制御部は、前記通信状態監視部が前記移動無線局と他の前記地上無線局間に通信が無いことを確認した場合に、前記無線リソースを解放する、
ことを特徴とする地上無線局。 - 前記移動無線局と自装置との通信状態を管理する移動局管理部を備え、
前記通信状態の確認は、自装置の前に前記移動無線局と通信する他の前記地上無線局に対して行われ、
前記移動局管理部は、前記通信状態の確認を他の前記地上無線局から要求された場合、自装置と前記移動無線局との通信の有無を応答する、
ことを特徴とする請求項1に記載の地上無線局。 - 前記複数の地上無線局の情報を保持するデータベースと、
前記データベースを参照して自装置の次に前記移動無線局が接続する前記地上無線局を特定する判定部と、を備え、
前記無線制御部は、自装置と前記移動無線局が通信を開始する場合に、前記判定部で特定された前記移動無線局が自装置の次に接続する前記地上無線局に対して無線リソースを確保するように要求する、
ことを特徴とする請求項1または2に記載の地上無線局。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2017/007333 WO2018154749A1 (ja) | 2017-02-27 | 2017-02-27 | 地上無線局 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP6490327B2 true JP6490327B2 (ja) | 2019-03-27 |
JPWO2018154749A1 JPWO2018154749A1 (ja) | 2019-04-04 |
Family
ID=63252489
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2018566991A Active JP6490327B2 (ja) | 2017-02-27 | 2017-02-27 | 地上無線局 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20190387445A1 (ja) |
JP (1) | JP6490327B2 (ja) |
DE (1) | DE112017007136B4 (ja) |
WO (1) | WO2018154749A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113347601B (zh) * | 2021-06-25 | 2022-07-12 | 湖南中车时代通信信号有限公司 | 一种轨道交通信号系统的网络切换方法及相关装置 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004304298A (ja) * | 2003-03-28 | 2004-10-28 | Ntt Docomo Inc | 通信網におけるリソース予約システム、リソース予約方法及びリソース予約装置 |
US20090298503A1 (en) * | 2008-04-04 | 2009-12-03 | Nokia Siemens Networks Oy | Method and apparatus for providing an efficient handover in a telecommunications system |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10164216A (ja) | 1996-11-29 | 1998-06-19 | Nec Eng Ltd | 回線自動切断装置 |
GB9702790D0 (en) | 1997-02-11 | 1997-04-02 | Nokia Telecommunications Oy | Radio telephone systems and methods of operation |
EP1458148A1 (en) | 2003-03-10 | 2004-09-15 | Sony International (Europe) GmbH | Quality of Service (QoS) -aware handover procedure for Ad-Hoc networks |
EP1594334B1 (en) * | 2004-05-07 | 2020-07-22 | Samsung Electronics Co., Ltd. | System and method for performing a fast handover in a wireless communication system |
US20080049676A1 (en) | 2006-08-23 | 2008-02-28 | Futurewei Technologies, Inc. | Method and system for resource allocation in a wireless communication network |
CN101635968A (zh) | 2008-07-22 | 2010-01-27 | 株式会社Ntt都科摩 | 切换处理方法、基站及网络通信系统 |
JP5312671B2 (ja) | 2010-02-19 | 2013-10-09 | 三菱電機株式会社 | 列車制御システムおよび列車制御システムにおけるハンドオーバ方法 |
CN103002452B (zh) | 2011-09-14 | 2016-08-10 | 华为技术有限公司 | 用于降低小区间信号干扰的方法、基站及无线通信系统 |
US9414276B2 (en) * | 2011-12-31 | 2016-08-09 | Telefonaktiebolaget L M Ericsson (Publ) | Mobility management method and apparatus in high speed railway |
JP5854849B2 (ja) | 2012-01-11 | 2016-02-09 | 株式会社Nttドコモ | 無線基地局装置及び遷移制御方法 |
EP2839714B1 (en) | 2012-04-16 | 2016-06-08 | Telefonaktiebolaget LM Ericsson (publ) | Method and radio network node for managing radio resources |
EP2667658A1 (en) | 2012-05-24 | 2013-11-27 | Alcatel-Lucent | Method for reserving resources and associated equipment |
US9642163B2 (en) | 2012-06-29 | 2017-05-02 | Mitsubishi Electric Corporation | Train control device |
US9414288B2 (en) * | 2012-08-21 | 2016-08-09 | Kyocera Corporation | Handover management based on speeds of wireless communication devices |
WO2014043877A1 (zh) * | 2012-09-20 | 2014-03-27 | 华为技术有限公司 | 一种上行调度方法及控制节点 |
US10392036B2 (en) | 2015-03-05 | 2019-08-27 | Mitsubishi Electric Corporation | Train control system, base station control device, and ground wireless base station system |
-
2017
- 2017-02-27 JP JP2018566991A patent/JP6490327B2/ja active Active
- 2017-02-27 DE DE112017007136.4T patent/DE112017007136B4/de active Active
- 2017-02-27 WO PCT/JP2017/007333 patent/WO2018154749A1/ja active Application Filing
- 2017-02-27 US US16/475,762 patent/US20190387445A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004304298A (ja) * | 2003-03-28 | 2004-10-28 | Ntt Docomo Inc | 通信網におけるリソース予約システム、リソース予約方法及びリソース予約装置 |
US20090298503A1 (en) * | 2008-04-04 | 2009-12-03 | Nokia Siemens Networks Oy | Method and apparatus for providing an efficient handover in a telecommunications system |
Also Published As
Publication number | Publication date |
---|---|
US20190387445A1 (en) | 2019-12-19 |
DE112017007136B4 (de) | 2023-06-15 |
WO2018154749A1 (ja) | 2018-08-30 |
DE112017007136T5 (de) | 2019-11-07 |
JPWO2018154749A1 (ja) | 2019-04-04 |
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