WO2004062310A1 - 無線通信システム、無線通信方法、無線通信プログラム及びプログラム記録媒体 - Google Patents
無線通信システム、無線通信方法、無線通信プログラム及びプログラム記録媒体 Download PDFInfo
- Publication number
- WO2004062310A1 WO2004062310A1 PCT/JP2003/015504 JP0315504W WO2004062310A1 WO 2004062310 A1 WO2004062310 A1 WO 2004062310A1 JP 0315504 W JP0315504 W JP 0315504W WO 2004062310 A1 WO2004062310 A1 WO 2004062310A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wireless communication
- communication system
- mobile terminal
- speed
- moving speed
- Prior art date
Links
- 238000004891 communication Methods 0.000 title claims abstract description 770
- 238000000034 method Methods 0.000 title claims description 61
- 238000001514 detection method Methods 0.000 claims description 23
- 230000005540 biological transmission Effects 0.000 claims description 20
- 238000010295 mobile communication Methods 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 abstract description 6
- 230000001413 cellular effect Effects 0.000 description 23
- 238000012545 processing Methods 0.000 description 23
- 230000005684 electric field Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000000737 periodic effect Effects 0.000 description 4
- 238000012546 transfer Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000010187 selection method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- 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
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
Definitions
- the present invention relates to a wireless communication system, a wireless communication method, a wireless communication program, and a program recording medium, and more particularly to connection and switching (handover) of a mobile terminal capable of connecting to a plurality of different wireless communication systems with each wireless communication system.
- the present invention relates to a wireless communication system, a wireless communication method, a wireless communication program, and a program recording medium that effectively realize the above.
- the technology for connecting to the Internet has been remarkably advanced, and in particular, the communication service area is wide and the communication speed is low, especially the cellular mobile radio communication system (hereinafter abbreviated as “cellular system”).
- cellular system High-speed (hundreds of kbps or less) Internet access service and wireless local area network (WLAN: Wireless Local Area Network) system (WLAN system)
- WLAN Wireless Local Area Network
- the communication service area is a local area (a hot spot area with a diameter of several tens of meters, or an area of several hundred meters such as a shopping district covered by an overlap of the hot spot area or a densely populated area).
- both wireless communication services such as high-speed (several tens of Mbps) Internet access services, are showing rapid progress.
- the mobile terminal is located in a service area that is simultaneously covered by two different wireless communication systems, the WLAN system and the cellular system,
- the first technical means is that a wireless communication system 1 having a wide communication service area and a medium / low communication speed is different from a wireless communication system 2 having a communication service area of a local area and a high communication speed.
- the mobile communication system comprises two wireless communication systems and mobile terminals capable of communicating by being connected to the wireless communication systems 1 and 2 respectively.
- the mobile terminal is capable of performing wireless communication with each of the wireless communication systems 1 and 2.
- Wireless communication systems 1 and 2 based on the determination result of whether the mobile terminal is in or out of service area, the detection result of the moving speed of the mobile terminal, and the detection result of Z or the communication speed of the mobile terminal. It is a wireless communication method for switching connections.
- a sixteenth technical means is the wireless communication method according to the first or the second technical means, wherein the mobile terminal is determined to be within the range of both the wireless communication systems 1 and 2. If the mobile terminal is connected to the wireless communication system 2 and communicating, the communication speed of the mobile terminal is compared with a preset threshold, and if the communication speed is higher than the threshold, A wireless communication method for maintaining communication with the wireless communication system 2 and switching to the wireless communication system 1 when the communication speed is lower than the threshold value.
- the sixth or the 14th technical means when a user's mobile terminal is present in a service area covered by the wireless communication systems 1 and 2 at the same time, the user Even during communication using 2, the most suitable wireless communication system can be selected according to the moving speed of the mobile terminal. That is, when the moving speed is high-speed moving, the switching to the wireless communication system 1 can be preferentially performed. Thus, it is possible to avoid frequent switching in the wireless communication system 2 and secure a stable communication service and communication speed. On the other hand, when the moving speed is low-speed movement, communication with the wireless communication system 2 capable of high-speed communication is maintained, and switching to the medium-low speed wireless communication system 1 can be avoided. As a result, it is possible to secure a stable high-speed communication speed.
- FIG. 1 is a network configuration diagram showing an example of a network configuration of a wireless communication system according to the present invention.
- AP Access Point
- 21 a, 21 b, 21 c,... are installed, and antennas 22 a, 22 b,
- step S5 when it is determined that the wireless communication system is within the communication range of any one of the wireless communication system 1 and the wireless communication system 2 (YES in step S5), in the next steps S6 and S7, Perform detailed in-area and out-of-area determinations.
- step S6 if it is determined that the mobile communication system 1 is within the communication range of the wireless communication system 1 and is outside the communication range of the wireless communication system 2 (YES in step S6), This means that only the mobile radio communication system (cellular system) can be used, and connection processing with the radio communication system 1 is performed (step S11). Conversely, if it is determined that the wireless communication system 1 is out of the communication range and the wireless communication system 2 is within the communication range (YES in step S7), the wireless communication area in the local area of the wireless communication system 2 This means that only the network system (WLAN system) can be used, and connection processing with the wireless communication system 2 is performed (step S14).
- WLAN system wireless local area
- the moving speed of the mobile terminal 3 averaged and output from the moving speed detection unit 36 at regular time intervals is compared with a predetermined threshold M as a comparison criterion.
- M for example, when the speed is higher than the threshold value of 50 km / h (YES in step S8), high-speed communication is possible and the price is generally low (it may be a fixed amount), but the access point (AP)
- the use of the wireless communication system 2 for local area communication that causes frequent switching to 21a is judged to have no advantage to the user, and the connection processing with the wireless communication system 1 is automatically performed. (Step S11).
- the automatic connection processing with the wireless communication system 1 in step S11 or the wireless communication system 2 in step S14 Prior to performing the automatic connection processing with the mobile terminal, the display unit displays the area / out-of-service conditions, the moving speed of the mobile terminal 3, and the selection result of the connection to the wireless communication system 1 or the wireless communication system 2.
- FIG. 4 shows a case where the mobile terminal 3 is communicating using the wireless communication system 1
- FIG. 5 shows a case where the mobile terminal 3 is communicating using the wireless communication system 2. Is shown.
- the moving speed of the mobile terminal 3 is detected by the moving speed detection unit 36, and the moving speed is higher than the predetermined threshold N.
- the speed is as fast as 50 km / h or more, which is the same value as the threshold value M (YES in step S36)
- communication is possible even in high-speed movement and use of the wireless communication system 1 for a wide area
- the switching (handover) process from the wireless communication system 2 to the wireless communication system 1 is automatically performed (step S39).
- the communication speed of the mobile terminal 3 is detected by the communication speed detection unit 35, and the communication speed is lower than a predetermined threshold K. For example, even when the speed is slower than the threshold of 250 kbps (YES in step S36), when the use of the wireless communication system 1 for medium- to low-speed communication and the wide area is shifted to the high-speed mobile state, In such a case, it may be determined that there is an advantage to the user, and the switching (handover) process from the wireless communication system 2 to the wireless communication system 1 may be automatically performed (step S39).
- the switching may be performed only when the moving speed detected by using the moving speed detecting unit 36 is higher than a predetermined threshold N. . That is, when the moving speed is lower than the threshold value N, even if switching to the wireless communication system 1 suitable for medium-to-low speed communication, there is a possibility that the communication fee is generally higher than that of the wireless communication system 2 and more economical. This is provided for the case where the wireless communication system 2 is continuously used.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Small-Scale Networks (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03777223A EP1585354A4 (en) | 2002-12-25 | 2003-12-03 | RADIOCOMMUNICATION SYSTEM, METHOD AND SOFTWARE, AND RECORDING MEDIUM FOR THIS SOFTWARE |
US10/539,073 US7620401B2 (en) | 2002-12-25 | 2003-12-03 | Wireless communications system, wireless communications method, wireless communications program and program recording medium |
AU2003289157A AU2003289157A1 (en) | 2002-12-25 | 2003-12-03 | Wireless communication system, wireless communication method, wireless communication program, program recorded medium |
CN2003801075819A CN1732708B (zh) | 2002-12-25 | 2003-12-03 | 无线通信系统、无线通信方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002-374453 | 2002-12-25 | ||
JP2002374453A JP2004208001A (ja) | 2002-12-25 | 2002-12-25 | 無線通信システム、無線通信方法、無線通信プログラム及びプログラム記録媒体 |
Publications (1)
Publication Number | Publication Date |
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WO2004062310A1 true WO2004062310A1 (ja) | 2004-07-22 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/015504 WO2004062310A1 (ja) | 2002-12-25 | 2003-12-03 | 無線通信システム、無線通信方法、無線通信プログラム及びプログラム記録媒体 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7620401B2 (ja) |
EP (1) | EP1585354A4 (ja) |
JP (1) | JP2004208001A (ja) |
CN (1) | CN1732708B (ja) |
AU (1) | AU2003289157A1 (ja) |
WO (1) | WO2004062310A1 (ja) |
Cited By (1)
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WO2020110277A1 (ja) * | 2018-11-30 | 2020-06-04 | ソニー株式会社 | 端末装置及び方法 |
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- 2003-12-03 EP EP03777223A patent/EP1585354A4/en not_active Withdrawn
- 2003-12-03 US US10/539,073 patent/US7620401B2/en not_active Expired - Fee Related
- 2003-12-03 AU AU2003289157A patent/AU2003289157A1/en not_active Abandoned
- 2003-12-03 CN CN2003801075819A patent/CN1732708B/zh not_active Expired - Fee Related
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2020110277A1 (ja) * | 2018-11-30 | 2020-06-04 | ソニー株式会社 | 端末装置及び方法 |
JPWO2020110277A1 (ja) * | 2018-11-30 | 2021-10-07 | ソニーグループ株式会社 | 端末装置及び方法 |
JP7124884B2 (ja) | 2018-11-30 | 2022-08-24 | ソニーグループ株式会社 | 端末装置及び方法 |
Also Published As
Publication number | Publication date |
---|---|
US20060135150A1 (en) | 2006-06-22 |
US7620401B2 (en) | 2009-11-17 |
EP1585354A4 (en) | 2010-04-07 |
EP1585354A1 (en) | 2005-10-12 |
AU2003289157A1 (en) | 2004-07-29 |
JP2004208001A (ja) | 2004-07-22 |
CN1732708B (zh) | 2011-08-10 |
CN1732708A (zh) | 2006-02-08 |
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