JP2011176549A5 - - Google Patents
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- JP2011176549A5 JP2011176549A5 JP2010038425A JP2010038425A JP2011176549A5 JP 2011176549 A5 JP2011176549 A5 JP 2011176549A5 JP 2010038425 A JP2010038425 A JP 2010038425A JP 2010038425 A JP2010038425 A JP 2010038425A JP 2011176549 A5 JP2011176549 A5 JP 2011176549A5
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- mobile station
- base station
- station apparatus
- communication system
- station device
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前記基地局装置は、無線フレームに含まれる上りデータ領域について、全ての移動局装置が当該基地局装置のみと通信を行う場合には当該上りデータ領域の全てが移動局装置と当該基地局装置との通信に使用されるように制御し、移動局装置から移動局装置間の直接通信を行うための要求を受信した場合には当該上りデータ領域の一部を移動局装置間で同期をとるための通信領域及び移動局装置間の直接通信を行うための通信領域として割り当てるように制御するフレーム領域制御手段を備え、
前記移動局装置は、前記基地局装置を介さずに移動局装置間の直接通信を行うための要求を前記基地局装置に対して送信する要求送信手段と、
前記基地局装置との間で直接的に同期をとることが可能である場合に当該同期の状態に基づいて他の移動局装置が前記基地局装置との間で間接的に同期をとるための信号である間接同期信号を前記移動局装置間で同期をとるための通信領域を使用して送信し、また、前記基地局装置との間で直接的に同期をとることが不可能である場合に他の移動局装置から送信された間接同期信号を受信して前記基地局装置との間で間接的に同期をとり当該同期の状態に基づいて他の移動局装置が前記基地局装置との間で間接的に同期をとるための信号である間接同期信号を前記移動局装置間で同期をとるための通信領域を使用して送信する間接同期信号送信手段と、
前記基地局装置との間で直接的に又は間接的にとられた同期の状態に基づいて、前記基地局装置により前記移動局装置間の直接通信を行うための通信領域として割り当てられた通信領域を使用して、移動局装置間の直接通信を行う直接通信手段と、を備えた、
ことを特徴とする無線通信システム。 In a radio communication system of an OFDMA-TDD communication system having a base station apparatus and a plurality of mobile station apparatuses,
When all the mobile station devices communicate only with the base station device with respect to the uplink data region included in the radio frame, the base station device has all the uplink data regions with the mobile station device and the base station device In order to synchronize a part of the uplink data area between the mobile station apparatuses when a request for direct communication between the mobile station apparatuses is received from the mobile station apparatus. Frame area control means for controlling to be assigned as a communication area for direct communication between the communication area and the mobile station device,
The mobile station apparatus transmits a request for performing direct communication between the mobile station apparatuses without going through the base station apparatus to the base station apparatus;
When it is possible to directly synchronize with the base station apparatus, another mobile station apparatus indirectly synchronizes with the base station apparatus based on the synchronization state When an indirect synchronization signal, which is a signal, is transmitted using a communication area for synchronization between the mobile station apparatuses, and it is impossible to directly synchronize with the base station apparatus Receiving an indirect synchronization signal transmitted from another mobile station device and indirectly synchronizing with the base station device, and the other mobile station device communicates with the base station device based on the synchronization state. An indirect synchronization signal transmitting means for transmitting an indirect synchronization signal that is a signal for indirectly synchronizing between the mobile station devices using a communication region for synchronization,
Communication area allocated as a communication area for performing direct communication between the mobile station apparatuses by the base station apparatus based on a synchronization state directly or indirectly taken with the base station apparatus Using direct communication means for performing direct communication between mobile station devices,
A wireless communication system.
前記移動局装置に備えられた前記直接通信手段は、前記基地局装置との間の同期の信頼性に応じて予め設定された態様で、時間方向と周波数方向の一方又は両方を狭めた通信領域を移動局装置間の直接通信に使用するThe direct communication means provided in the mobile station apparatus is a communication area in which one or both of the time direction and the frequency direction is narrowed in a preset manner according to the reliability of synchronization with the base station apparatus. For direct communication between mobile station devices
ことを特徴とする無線通信システム。A wireless communication system.
前記移動局装置に備えられた前記間接同期信号送信手段は、移動局装置により中継される回数に応じた情報を含む間接同期信号を送信するThe indirect synchronization signal transmitting means provided in the mobile station device transmits an indirect synchronization signal including information corresponding to the number of times relayed by the mobile station device.
ことを特徴とする無線通信システム。A wireless communication system.
前記移動局装置に備えられた前記直接通信手段は、前記基地局装置との間の同期の信頼性に応じて予め設定された態様として、前記基地局装置との間で間接的に同期をとるために使用する間接同期信号により識別される中継の回数が多いほど通信領域の時間方向と周波数方向の一方又は両方について狭める幅を大きくする態様を用いるThe direct communication means provided in the mobile station apparatus synchronizes indirectly with the base station apparatus as a preset mode according to the reliability of synchronization with the base station apparatus. In order to increase the number of relays identified by the indirect synchronization signal used for the purpose, the width to be narrowed in one or both of the time direction and the frequency direction of the communication area is increased.
ことを特徴とする無線通信システム。A wireless communication system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010038425A JP5376333B2 (en) | 2010-02-24 | 2010-02-24 | Wireless communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010038425A JP5376333B2 (en) | 2010-02-24 | 2010-02-24 | Wireless communication system |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2011176549A JP2011176549A (en) | 2011-09-08 |
| JP2011176549A5 true JP2011176549A5 (en) | 2013-03-07 |
| JP5376333B2 JP5376333B2 (en) | 2013-12-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2010038425A Active JP5376333B2 (en) | 2010-02-24 | 2010-02-24 | Wireless communication system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5376333B2 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5940867B2 (en) * | 2012-04-18 | 2016-06-29 | 株式会社Ｎｔｔドコモ | Wireless communication system, communication control device, wireless communication terminal, and communication control method |
| EP2890193B1 (en) * | 2012-08-24 | 2018-05-23 | Fujitsu Limited | Radio communication method, radio communication system, radio base station, and radio terminal |
| JP5957617B2 (en) * | 2012-12-09 | 2016-07-27 | エルジー エレクトロニクス インコーポレイティド | Synchronization acquisition method and apparatus for direct communication between a coverage internal terminal and a coverage external terminal in a wireless communication system |
| JP2014183412A (en) * | 2013-03-18 | 2014-09-29 | Kddi Corp | Radio base station device, radio terminal device, radio communication system and inter-terminal device direct communication method |
| EP2978150B1 (en) * | 2013-03-20 | 2018-10-24 | LG Electronics Inc. | Method for transmitting and receiving signal using device-to-device communication in wireless communication system, and device for same |
| US9479298B2 (en) * | 2013-07-08 | 2016-10-25 | Intel IP Corporation | Demodulation reference signals (DMRS)for side information for interference cancellation |
| JP6412872B2 (en) | 2013-09-27 | 2018-10-24 | 京セラ株式会社 | User terminal, method and processor |
| NO2705215T3 (en) | 2014-01-31 | 2018-02-17 | ||
| CN106537953B (en) * | 2014-05-09 | 2020-01-21 | 德国电信股份公司 | Method and system for improving or enabling radio coverage of user equipment to a mobile communication network |
| JP6130592B2 (en) * | 2014-05-09 | 2017-05-17 | 京セラ株式会社 | User terminal and device |
| BR112017002529B1 (en) * | 2014-08-07 | 2023-10-24 | Intel Corporation | RESOURCE ALLOCATION AND UE BEHAVIOR FOR D2D SYNC SIGNAL TRANSMISSION FOR INTERCELLULAR D2D DISCOVERY |
| US11153837B2 (en) | 2015-07-02 | 2021-10-19 | Qualcomm Incorporated | Synchronization for wireless communication systems |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4625611B2 (en) * | 2000-12-11 | 2011-02-02 | シャープ株式会社 | Wireless communication system |
| JP2008219526A (en) * | 2007-03-05 | 2008-09-18 | Univ Of Electro-Communications | Radio terminal |
| JP5032185B2 (en) * | 2007-04-16 | 2012-09-26 | 日本無線株式会社 | Wireless communication system, wireless communication method, and communication apparatus |
| JP5032186B2 (en) * | 2007-04-16 | 2012-09-26 | 日本無線株式会社 | Wireless communication system, wireless communication method, and communication apparatus |
-
2010
- 2010-02-24 JP JP2010038425A patent/JP5376333B2/en active Active
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