WO2008038520A1 - Terminal de communication mobile et procédé pour détecter sa vitesse mobile - Google Patents
Terminal de communication mobile et procédé pour détecter sa vitesse mobile Download PDFInfo
- Publication number
- WO2008038520A1 WO2008038520A1 PCT/JP2007/067768 JP2007067768W WO2008038520A1 WO 2008038520 A1 WO2008038520 A1 WO 2008038520A1 JP 2007067768 W JP2007067768 W JP 2007067768W WO 2008038520 A1 WO2008038520 A1 WO 2008038520A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- speed detection
- value
- communication terminal
- mobile communication
- speed
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
- H04W64/006—Locating users or terminals or network equipment for network management purposes, e.g. mobility management with additional information processing, e.g. for direction or speed determination
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
- G01S11/02—Systems for determining distance or velocity not using reflection or reradiation using radio waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
- G01S11/02—Systems for determining distance or velocity not using reflection or reradiation using radio waves
- G01S11/06—Systems for determining distance or velocity not using reflection or reradiation using radio waves using intensity measurements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
- G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/52—Determining velocity
Definitions
- the present invention relates to a mobile communication terminal such as a mobile phone and a method for detecting the moving speed thereof.
- Patent Document 1 Japanese Patent Laid-Open No. 2001-169339 (paragraph 0063, FIG. 8)
- the present invention has been made to solve the above-described problems, and provides a mobile communication terminal capable of detecting a moving speed with high accuracy and a moving speed detecting method thereof.
- the mobile communication terminal of the present invention has a plurality of detection methods different from each other.
- the plurality of movement speed detection units are configured to include a first movement speed detection unit that detects a movement speed using a fading frequency, and a second movement that detects a movement speed using a cell movement frequency. It can be set as a speed detection part.
- the speed detection value selection unit is configured when the mobile communication terminal is communicating.
- the speed detection value of the first moving speed detection unit can be selected.
- the speed detection value selection unit is configured to detect the second movement speed detection unit. The detected speed value can be selected.
- the speed detection value selection unit is waiting for the mobile communication terminal, the speed detection value of the second movement speed detection unit is greater than or equal to a predetermined value, and the speed of the first movement speed detection unit When the difference value between the detection value and the speed detection value of the second movement speed detection unit is less than a predetermined value, the speed detection value of the first movement speed detection unit can be selected.
- the speed detection value selection unit is waiting for the mobile communication terminal, the speed detection value of the second movement speed detection unit is greater than or equal to a predetermined value, and the speed of the first movement speed detection unit If the difference value between the detection value and the speed detection value of the second movement speed detection unit is a predetermined value or more, a predetermined value other than the respective speed detection values of the first movement speed detection unit and the second movement speed detection unit is set. You can also choose.
- a storage unit that holds the selection criterion may be further provided.
- the mobile communication terminal when the mobile communication terminal is connected to a radio base station provided indoors, the mobile communication terminal may further include a speed correction unit that corrects the detection value of the second movement speed detection unit.
- the speed correction unit corrects the detection value based on a ratio between a cell radius of a radio base station provided outdoors and a cell radius of a radio base station provided indoors.
- a storage unit that holds the selected speed detection value and the communication parameter value corresponding to the selected speed detection value can be further provided.
- the moving speed detection method of the present invention is a method for detecting the moving speed of a mobile communication terminal, wherein the speed of the mobile communication terminal is detected by a plurality of different detection methods, and a predetermined selection criterion is used. A speed detection value is selected from the speed detection values detected by the moving speed detection methods based on the criteria.
- the plurality of detection methods include a first movement speed detection method that detects a movement speed using a fading frequency and a second movement speed detection that detects a movement speed using a cell movement frequency. It can be a method.
- a speed detection value detected by the first movement speed detection method can be selected.
- the speed detection value detected by the first movement speed detection method Can be selected.
- the speed detection value detected by the second moving speed detection method is not less than a predetermined value while the mobile communication terminal is waiting, and the speed detection value detected by the first moving speed detection method is When the difference value of the speed detection values detected by the second movement speed detection method is less than a predetermined value, it is possible to select the speed detection straight detected by the first movement speed detection method.
- the speed detection value detected by the second moving speed detection method is not less than a predetermined value while the mobile communication terminal is waiting, and the speed detection value detected by the first moving speed detection method If the difference value between the speed detection values detected by the second movement speed detection method is greater than or equal to a predetermined value, a predetermined value other than the respective speed detection values detected by the first movement speed detection method and the second movement speed detection method. A value can be selected.
- the mobile communication terminal of the present invention includes a plurality of moving speed detection units having different detection methods, and detects any one of the speed detection values of the respective moving speed detection units based on a predetermined selection criterion. Since a configuration for selecting values is adopted, the force S can always be detected with high accuracy.
- FIG. 1 is an example of a control block diagram of mobile communication terminal 10 according to the embodiment of the present invention.
- the mobile communication terminal 10 includes a transmission / reception unit 12, a coding / decoding unit 14, an input / output unit 16 And a storage unit 18 and a control unit 20.
- the transmission / reception unit 12 transmits / receives radio waves to / from a radio base station (not shown) via the antenna 22.
- the transmission / reception unit 12 includes an electric field strength measurement unit 12a and a signal component detection unit 12b.
- the electric field strength measuring unit 12a measures the electric field strength of the received signal.
- the signal component detection unit 12b receives an intermediate frequency signal in the received signal, and detects a signal component corresponding to the envelope of the electric field strength measured by the intermediate frequency signal force electric field strength measurement unit 12a. This signal component is output to the first movement speed detection unit 30 constituting the control unit 20.
- the encoding / decoding unit 14 decodes a signal received from the radio base station while encoding a signal to be transmitted to the radio base station.
- the input / output unit 16 outputs a signal decoded by the encoding / decoding unit 14 and inputs a signal to be encoded by the encoding / decoding unit 14.
- the input / output unit 16 includes, for example, a microphone and a camera as an input unit, and for example, a speaker as an output unit.
- the storage unit 18 stores programs and data necessary for the operation of the control unit 20.
- the storage unit 18 also stores a communication parameter value defining table TBL that defines the relationship between the moving speed of the mobile communication terminal 10 and the communication parameter value.
- the control unit 20 manages the entire mobile communication terminal 10 including the transmission / reception unit 12, the encoding / decoding unit 14, the input / output unit 16 and the storage unit 16.
- the control unit 20 includes a first movement speed detection unit 30 that detects the movement speed of the mobile communication terminal 10 using the fading frequency, and a second movement that detects the movement speed of the mobile communication terminal 10 using the cell movement frequency.
- a speed detection unit 32, a speed detection value selection unit 34, a communication parameter value determination unit 36, and a communication parameter value setting unit 38 are provided.
- the first moving speed detection unit 30 includes a filter circuit 30a, a comparison circuit 30b, a counter circuit 30c, and a moving speed estimation circuit 30d.
- the filter circuit 30a receives the signal component described above from the signal component detector 12b and removes the DC component of this signal component.
- the comparison circuit 30b compares the signal from which the DC component has been removed with a predetermined threshold value.
- the counter circuit 30c measures the fading frequency by counting the threshold from the comparison result, the signal having a width exceeding the value, or the period.
- the moving speed estimation circuit 30d is obtained from the fading frequency.
- the moving speed of the mobile communication terminal 10 is calculated by calculating the product of the pitch of the fading and the wavelength of the carrier wave. The calculated moving speed is output to the speed detection value selection unit 34 as the first speed detection value D1.
- the second moving speed detector 32 calculates the moving speed of the mobile communication terminal 10 by examining the cell moving frequency.
- the cell movement frequency refers to the number of cells that the mobile communication terminal 10 moves within a fixed time. Since the configuration for calculating the moving speed of the mobile communication terminal 10 from the cell moving frequency is known, the description thereof is omitted.
- the calculated moving speed is output to the speed detection value selection unit 34 as the second speed detection value D2.
- the speed detection value selection unit 34 inputs the speed detection values Dl and D2, and based on a predetermined selection criterion, the speed detection value selection unit 34 selects one of the plurality of speed detection values Dl and D2. The speed detection value is selected, and this is output to the communication parameter value determination unit 36 as the selected speed value D3.
- the communication parameter value determining unit 36 searches the communication parameter value defining table TBL using the selected speed value D3 as a key, and determines various communication parameter values corresponding to the selected speed value D3.
- the communication parameter value setting unit 38 sends the determined communication parameter value to the mobile communication terminal 10.
- FIG. 2 shows an example of the setting contents of the communication parameter value defining table TBL stored in the storage unit 18.
- the communication parameter value definition table TBL defines an appropriate communication parameter value for each selected speed value D3 finally selected by the speed detection value selection unit 34.
- Examples of communication parameters include power channel monitoring period, adjacent channel monitoring period, closed loop power control, cell search algorithm, channel estimation, and average number of path reallocation.
- the transmitter / receiver unit 12 performs, for example, a demultiplexer, transmitter, PLL (Phase (Locked Loop) circuit, modulation / demodulation unit, diffusion for baseband signal processing, inverse spreader and Rake receiver for receiving and synthesizing radio waves such as direct wave and reflected wave (the delay is not shown) Prepare.
- PLL Phase (Locked Loop) circuit
- modulation / demodulation unit diffusion for baseband signal processing
- inverse spreader and Rake receiver for receiving and synthesizing radio waves such as direct wave and reflected wave (the delay is not shown) Prepare.
- the code / decoding method in the code / decoding unit 14 is the communication of the mobile communication terminal 10. It is determined according to the system or the format of the transmission / reception data. For example, when the transmission / reception data is transmission / reception data for a voice call, the encoding / decoding unit 14 performs communication using a PCM (Pulse Code Modulation) encoding method or an AMR (Adaptive Multi-Rate) encoding method. I do.
- PCM Pulse Code Modulation
- AMR Adaptive Multi-Rate
- the input / output unit 16 is not necessarily the device itself as described above, and may be a connection means conforming to a predetermined communication specification for connecting these devices, for example, a connector.
- Communication specifications include, for example, USB (Universal Serial Bus) as an interface for data communication, IEEE (The Institute of Electrical and Electronics Engineers, Inc.) 1394, which is a high-speed serial bus, and wireless communication for portable information devices. It is possible to cite Benolet tooth (Bluetooth) as a technology.
- FIG. 3 is a flowchart for explaining a typical operation example (movement speed detection method) of the mobile communication terminal 10 according to the embodiment of the present invention.
- the first moving speed detector 30 and the second moving speed detector 32 detect the moving speed of the mobile communication terminal 10, respectively, and use the detected speed values D1 and D2 as the detected speed values selector 34. (Step S l).
- the speed detection value selection unit 34 determines whether the mobile communication terminal 10 is communicating or waiting (step S2). When communication is in progress, the speed detection value selection unit 34 selects the first speed detection value D1, and outputs this as the selected speed value D3 to the communication parameter value determination unit 36 (step S3).
- the speed detection value selection unit 34 determines whether the mobile communication terminal 10 is waiting.
- step S4 It is determined whether or not the speed detection value D2 is equal to or higher than a predetermined value (for example, 20 km / h) (step S4).
- a predetermined value for example, 20 km / h
- the speed detection value selection unit 34 Selects the second speed detection value D2, and outputs it to the communication parameter value determination unit 36 as the selected speed value D3 (step S5).
- the speed detection value selection unit 34 selects the first speed Whether the difference between the detection value D1 and the second speed detection value D2 is a predetermined value (for example, ⁇ 2km / h) or more (Step S6).
- the speed detection value selection unit 34 selects the first speed detection value D1 when the difference value is less than the predetermined value (step S7), and when the difference value is equal to or greater than the predetermined value, the first speed detection value.
- a predetermined fixed value other than D1 and the second speed detection value D2 (for example, an average value of the first speed detection value D1 and the second speed detection value D2) is selected (step S8).
- the speed detection value selection unit 34 outputs the selected value to the communication parameter value determination unit 36 as a selection speed value D3.
- the communication parameter value determining unit 36 determines a communication parameter value corresponding to the selected speed value D3 (step S9). Specifically, the communication parameter value determining unit 36 searches the communication parameter value defining table TBL using the selected speed value D3 as a key, and determines the values of various communication parameters corresponding to the selected speed value D3. The communication parameter value setting unit 38 sets the determined communication parameter value in the mobile communication terminal 10 (step S10).
- the mobile communication terminal 10 of the present embodiment includes a plurality of first moving speed detection units 30 and second moving speed detection units 32 having different detection methods, and is based on a predetermined selection criterion. Select the output of one of the moving speed detectors 30 and 32. The selection criterion is determined so that the detection values of the moving speed detection units 30 and 32 with higher detection accuracy are always selected. Therefore, the mobile communication terminal 10 can always detect its moving speed with high accuracy.
- this makes it possible to make the communication parameter value set according to the moving speed highly reliable.
- the communication performance of the mobile communication terminal 10 for example, shortening the connection time, It is also possible to improve the call connection maintenance rate improvement, optimization, etc.).
- the mobile communication terminal 10 is further connected to a determination unit for determining whether the mobile communication terminal 10 is connected to a wireless base station installed indoors! /, And an indoor wireless base station.
- a speed correction unit (both not shown) for correcting the speed detection value D2 of the second movement speed detection unit.
- the speed correction unit corrects the speed detection value D2 based on the ratio of the cell radius of a radio base station provided outdoors and the cell radius of a radio base station provided indoors. By doing so, it is possible to eliminate the problem of misrecognizing the frequency of cell movement during indoor movement due to the difference in cell radius, and to further improve the accuracy of detection of the movement speed.
- the mobile communication terminal 10 includes a base station density information acquisition unit that obtains base station density information of the region where the mobile communication terminal 10 is currently located, and a speed correction unit that corrects the speed detection value D2 based on the base station density information ( It is also possible to include (not shown). In this way, erroneous detection of the moving speed due to the difference in base station density can be avoided.
- the present inventor has obtained the knowledge that when the fading frequency is lowered, the fluctuation of the electric field intensity is decreased, and conversely, when the fading frequency is increased, the fluctuation of the electric field intensity is increased. Therefore, the first moving speed detection unit 30 can also derive the first speed detection value D1 from this relationship. Further, correlation data between the fading frequency and the moving speed of the mobile communication terminal 10 is obtained by experiments, and this correlation data is stored in advance in the storage unit 18 or the like, and the first moving speed detection unit 30 accesses the storage unit 18 to perform fading. It is also possible to search for the corresponding moving speed using the frequency as a key.
- the speed detection unit mounted on the mobile communication terminal 10 is limited to the first movement speed detection unit 30 that uses a fading frequency and the second movement speed detection unit 32 that uses a cell movement frequency. There is no.
- the mobile communication terminal 10 can be equipped with other speed detection units instead of these or in addition to these.
- the selection criteria shown in Fig. 3 may be changed as appropriate in consideration of the characteristics of the speed detector.
- Examples of other speed detection units include a speed detection unit that uses a GPS (Global Positioning System) system. This speed detector obtains the moving speed of the mobile communication terminal 1 based on the temporal change of the position information (latitude and longitude) of the mobile communication terminal 10 obtained from the GPS satellite. As another speed detection unit, for example, a speed detection unit that uses DGPS (Difference Global Positioning System) with higher accuracy than GPS can be listed. The speed detector obtains the position of the mobile communication terminal 10 in time series, detects the direction of change with a gyro, and checks the state of speed change with an acceleration sensor. This speed detector can also detect the speed of the mobile communication terminal 10 at each time point.
- GPS Global Positioning System
- the various moving speed selection criteria shown in FIG. 3 can be stored in the storage unit 18 in advance, for example, in the form of a table. In this way, the mobile communication terminal 10 can select the selection speed value D3 at high speed without complicating the device configuration.
- FIG. 1 is an example of a control block diagram of a mobile communication terminal according to an embodiment of the present invention.
- FIG. 2 is a format diagram showing an example of setting contents of a communication parameter value specification table
- FIG. 3 is a flow chart for explaining a typical operation example of the mobile communication terminal according to the embodiment of the present invention.
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008536328A JP5176961B2 (ja) | 2006-09-25 | 2007-09-12 | 移動通信端末およびその移動速度検出方法 |
EP07807175A EP2068461A1 (en) | 2006-09-25 | 2007-09-12 | Mobile communication terminal and method for detecting mobile speed of the same |
US12/442,224 US8116755B2 (en) | 2006-09-25 | 2007-09-12 | Mobile communication terminal and moving speed detection method for the same |
CN2007800354076A CN101518133B (zh) | 2006-09-25 | 2007-09-12 | 移动通信终端和用于移动通信终端的移动速度检测方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006258457 | 2006-09-25 | ||
JP2006-258457 | 2006-09-25 |
Publications (1)
Publication Number | Publication Date |
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WO2008038520A1 true WO2008038520A1 (fr) | 2008-04-03 |
Family
ID=39229958
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/067768 WO2008038520A1 (fr) | 2006-09-25 | 2007-09-12 | Terminal de communication mobile et procédé pour détecter sa vitesse mobile |
Country Status (5)
Country | Link |
---|---|
US (1) | US8116755B2 (ja) |
EP (1) | EP2068461A1 (ja) |
JP (1) | JP5176961B2 (ja) |
CN (1) | CN101518133B (ja) |
WO (1) | WO2008038520A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011530905A (ja) * | 2008-08-12 | 2011-12-22 | ゼットティーイー コーポレイション | 端末の運動状態の評価を制御する方法及び端末 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090154446A1 (en) * | 2007-12-14 | 2009-06-18 | Infineon Technologies Ag | Data frame, telegram, method for controlling an rf-transceiver and mobile communication system |
CN102655648A (zh) * | 2011-03-02 | 2012-09-05 | 鼎桥通信技术有限公司 | 用户移动性识别方法、装置及系统 |
CN102740318B (zh) * | 2011-04-14 | 2015-08-12 | 中兴通讯股份有限公司 | 自适应测速方法及装置 |
WO2014034808A1 (ja) * | 2012-08-30 | 2014-03-06 | 京セラ株式会社 | 携帯電子機器 |
CN103093630B (zh) * | 2013-01-06 | 2015-01-07 | 北京拓明科技有限公司 | 高速道路车辆的测速方法 |
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GB2422273B (en) * | 2005-01-14 | 2009-07-08 | Samsung Electronics Co Ltd | Method for inter-frequency handover |
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2007
- 2007-09-12 CN CN2007800354076A patent/CN101518133B/zh not_active Expired - Fee Related
- 2007-09-12 EP EP07807175A patent/EP2068461A1/en not_active Withdrawn
- 2007-09-12 WO PCT/JP2007/067768 patent/WO2008038520A1/ja active Application Filing
- 2007-09-12 JP JP2008536328A patent/JP5176961B2/ja not_active Expired - Fee Related
- 2007-09-12 US US12/442,224 patent/US8116755B2/en not_active Expired - Fee Related
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JP2000092540A (ja) * | 1998-09-16 | 2000-03-31 | Toshiba Corp | 移動無線通信システム、移動無線端末装置、および移動速度検出方法 |
JP2001169339A (ja) | 1999-12-13 | 2001-06-22 | Matsushita Electric Ind Co Ltd | 通信端末装置及び無線通信方法 |
JP2002141858A (ja) * | 2000-10-31 | 2002-05-17 | Toshiba Corp | 移動無線端末及びその移動速度検出方法 |
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JP2011530905A (ja) * | 2008-08-12 | 2011-12-22 | ゼットティーイー コーポレイション | 端末の運動状態の評価を制御する方法及び端末 |
US8738008B2 (en) | 2008-08-12 | 2014-05-27 | Zte Corporation | Methods for controlling mobility state evaluation of user equipment and user equipment thereof |
Also Published As
Publication number | Publication date |
---|---|
US8116755B2 (en) | 2012-02-14 |
EP2068461A1 (en) | 2009-06-10 |
CN101518133B (zh) | 2012-03-14 |
CN101518133A (zh) | 2009-08-26 |
US20100081420A1 (en) | 2010-04-01 |
JP5176961B2 (ja) | 2013-04-03 |
JPWO2008038520A1 (ja) | 2010-01-28 |
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