WO2006059371A1 - 移動局装置および同装置におけるデータ通信速度予測方法 - Google Patents
移動局装置および同装置におけるデータ通信速度予測方法 Download PDFInfo
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- WO2006059371A1 WO2006059371A1 PCT/JP2004/017797 JP2004017797W WO2006059371A1 WO 2006059371 A1 WO2006059371 A1 WO 2006059371A1 JP 2004017797 W JP2004017797 W JP 2004017797W WO 2006059371 A1 WO2006059371 A1 WO 2006059371A1
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- mobile station
- data communication
- station device
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
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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]
- H04W28/18—Negotiating wireless communication parameters
- H04W28/22—Negotiating communication rate
Definitions
- the present invention relates to a mobile station apparatus and a data communication speed prediction method in the apparatus, for example, a technique suitable for use in a mobile radio communication system employing a W-CDMA (Wideband-Code Division Multiple Access) system. .
- W-CDMA Wideband-Code Division Multiple Access
- the 3rd Generation Partnership Project (3GPP) is standardizing the W-CDMA system, which is one of the 3rd generation mobile communication systems.
- 3GPP 3rd Generation Partnership Project
- One of the themes of standardization is a maximum of about 14 Mbps (megabits per second) in the radio area (downlink) between a mobile station such as a mobile phone and a fixed station such as a radio base station.
- HSDPA High Speed Downlink Packet Access
- HSDPA data transfer is performed by the best Fauto type using a shared (common) channel, and the modulation method and error correction coding rate are set according to the amount of noise in the radio section and the strength of power. Change dynamically.
- HSDPA adopts an adaptive coding modulation scheme.
- the QPSK modulation scheme and the 16-value QAM scheme are adaptively switched according to the radio environment between the base station and the mobile station. It is a feature. Due to these features, in HSDPA, when multiple mobile stations share a channel, the received power is stronger and the communication speed is higher for mobile stations.
- HSDPA adopts an H-ARQ (Hybrid Automatic Repeat reQuest) method.
- HSDPA Hybrid Automatic Repeat reQuest
- the base station power data is retransmitted in response to a request from the mobile station, and the mobile station retransmits the data already received. Characterized by performing error correction decoding using both received data and data.
- H-ARQ increases the error correction decoding gain and reduces the number of retransmissions by effectively using already received data even if there is an error.
- the main radio channels used for HSDPA are HS—SCCH (High Speed-Shared control channel), HS—PDSCH (high Speed—Physical Downlink Shared Channel). HS-DPCCH (High Speed-Dedicated Physical Control Channel).
- HS-SCCH and HS-PDSCH are both common channels in the downlink direction (that is, the direction from the base station to the mobile station), and HS-SCCH relates to data transmitted on HS-PDSCH. It is a control channel that transmits various parameters. As various parameters
- modulation type information indicating which modulation method is used to transmit data by HS-PDSCH, the number of spreading codes allocated (number of codes), information on the rate matching pattern to be transmitted, etc. Can be mentioned.
- the HS-DPCCH is an individual control channel in the uplink direction from the mobile station to the base station.
- Each of the ACK signals depends on whether or not the data received via the HS-PDSCH can be received. Used when the mobile station transmits a NACK signal to the base station. If the mobile station fails to receive data (such as when the received data is a CRC error), the NACK signal is transmitted from the mobile station, so the base station performs retransmission control.
- the HS-DPCCH transmits the received signal quality (eg, SIR (Signal Intensity Ratio)) of the received signal of the base station power to the base station as a CQI (Channel Quality Indicator). Also used for.
- the base station determines whether the downlink radio environment is good or bad based on the received CQI. If it is good, the base station switches to a modulation method that can transmit data at a higher speed, and vice versa. Is adaptively switched to the modulation method for transmitting.
- FIG. 11 is a diagram showing a channel configuration in HSDPA. Since W-CDMA uses a code division multiplexing system, each channel is separated by a code.
- CPICH Common Pilot Channel
- P-CCPCH Primary Common Control Physical Channel
- CPICH is a channel used as a channel reference, cell search, and a timing reference for other downlink physical channels in the same cell in a mobile station. This is a channel for transmitting a signal.
- P—CCPCH is a channel for transmitting broadcast information.
- each channel constitutes one frame (10 ms) with 15 slots.
- the head of the P-CCPCH and HS-SCCH frames coincides with the head of the CPICH frame.
- the head of HS-PDSCH frame is delayed by 2 slots with respect to HS-SCCH, etc. This was received after the mobile station received modulation type information via HS-SCCH. This is because HS-PDSCH can be demodulated using a demodulation method corresponding to the modulation type.
- HS-SCCH and HS-PDSCH consist of 3 slots and 1 subframe.
- HS-DPCCH is not synchronized with CPICH, but is an uplink channel and is based on timing generated in a mobile station.
- a service user requests a stable and high communication speed.
- the data communication speed changes dynamically due to various conditions in the radio section (such as radio wave conditions and user congestion), as in the case of HSDPA described above, this is an advantageous place for high-speed data communication.
- data communication with a low communication speed increases battery power consumption due to an increase in power consumption, and the modulation scheme and error correction coding rate applied in data communication with a low communication speed. Squeezes radio resources (transmission band, transmission power, number of transmission antennas, number of spreading codes, number of carriers, etc.).
- the location where the received electrolysis strength is high is clearly indicated by the color of the floor, etc., so that the location can be easily selected (see Patent Document 1 below), or the mobile station obtains the location information.
- the data is sent to the fixed station at a predetermined frequency, and the fixed station predicts the data communication speed and the mobile station.
- a mobile station uses GPS (Global Positioning System) to estimate the current position, and manages high-speed wireless data communication base station information using a low-speed wireless data line at the start of communication.
- the management central center will also obtain data, inform the user whether communication is possible, the available location near the current position and the optimum reception position, and automatically connect to the base station if communication is possible. Is done.
- the data communication speed is predicted on the fixed station side as in Patent Document 2 above, or the information on the high-speed wireless data communication base station is fixed on the fixed station (management central center) side as in Patent Document 3 above.
- the mobile station is uniquely designed without specifying the location where the high-speed data communication service can be received or the speed prediction by the fixed station. The purpose is to enable users to receive high-speed data communication services with high probability and efficiency by enabling speed prediction.
- Patent Document 1 Japanese Patent Laid-Open No. 2002-135835
- Patent Document 2 JP 2002-353876 A
- Patent Document 3 Japanese Patent Laid-Open No. 10-42360
- a mobile station apparatus of the present invention is a mobile station apparatus that performs data communication with a base station apparatus by radio, and at least the data communication is performed when the data communication is performed.
- the mobile station apparatus of the present invention is a mobile station apparatus that performs data communication with a base station apparatus by radio, and at the time of performing the data communication, at least communication speed information of the data communication and the movement Recording means for recording the position information of the station device and the time information at which the data communication was performed as history information, and a position where data communication at a desired communication speed can be performed based on the history information in the recording means It is characterized by the provision of a prediction means for predicting time and time.
- the mobile station apparatus may further include a presentation unit for presenting a prediction result by the prediction unit to a user.
- the presenting means is configured to determine the current position of the mobile station apparatus based on the current position information of the mobile station apparatus and the position predicted by the prediction means to allow data communication at the desired communication speed. It may be configured as display means for displaying the direction from the position to the predicted position.
- map display means for displaying a map of positions where high-speed data communication at a predetermined speed or higher was possible in the past based on the history information in the recording means may be further provided.
- a determination unit that determines whether data communication at the communication speed is possible based on a prediction result by the prediction unit, and a case in which the determination unit determines that data communication at the communication speed is possible
- automatic data communication starting means for automatically starting data communication may be further provided.
- data communication at the above communication speed is possible based on the prediction result by the prediction means.
- a transmission means for transmitting the history information directly to another mobile station apparatus or via a communication apparatus may be further provided.
- the mobile station apparatus of the present invention is a mobile station apparatus that performs data communication with a base station apparatus wirelessly.
- the mobile station apparatus ⁇ ⁇ Based on the history information received by the receiving means, receiving means for receiving at least the communication speed information of the data communication and the location information of the mobile station apparatus recorded as history information. And a prediction means for predicting a position where data communication at a desired communication speed is possible.
- the mobile station apparatus of the present invention is a mobile station apparatus that performs data communication with a base station apparatus wirelessly, and when the mobile station apparatus other than itself performs data communication, the mobile station apparatus Receiving means for receiving at least communication speed information of the data communication, position information of the mobile station apparatus and time information for performing the data communication recorded as history information, and the history information received by the receiving means And a predicting means for predicting a position and a time at which data communication at a desired communication speed is possible.
- the data communication speed prediction method in the mobile station apparatus of the present invention includes at least communication speed information of the data communication and position information of the mobile station measure when the mobile station apparatus performs the data communication. Recorded as history information in the mobile station device, and based on the recorded history information, the mobile station device predicts a position where data communication at a desired communication speed is possible.
- the data communication speed prediction method in the mobile station apparatus provides at least the communication speed information of the data communication, the position information of the mobile station apparatus, and the mobile station apparatus when performing the data communication.
- the time information at which the data communication was performed is recorded as history information in the mobile station device, and based on the recorded history information, the mobile station device is capable of performing data communication at a desired communication speed, It is characterized by predicting.
- FIG. 1 is a block diagram showing a configuration of a mobile communication system as an embodiment of the present invention.
- FIG. 2 is a sequence diagram for explaining an operation of storing communication speed history information in the mobile station shown in FIG. 1.
- FIG. 3 (A) and (C) are examples of mobile station display screens for explaining the data communication speed prediction operation in the mobile station shown in FIG.
- FIG. 4 is a sequence diagram for explaining a data communication speed prediction operation in the mobile station shown in FIG. 1.
- FIG. 5 (A)-(D) is a diagram showing an example of a mobile station display screen for explaining the high-speed data communication position search operation (part 1) in the mobile station shown in FIG.
- FIG. 6 is a sequence diagram for explaining the high-speed data communication position search operation (part 1) in the mobile station shown in FIG.
- FIG. 7] (A) and (D) are diagrams showing examples of mobile station display screens for explaining the high-speed data communication position search operation (part 2) in the mobile station shown in FIG.
- FIG. 8 is a sequence diagram for explaining the high-speed data communication position search operation (part 2) in the mobile station shown in FIG.
- FIG. 9 is a sequence diagram for explaining the automatic high-speed data communication operation by the mobile station shown in FIG. 1.
- FIG. 10 is a diagram for explaining sharing of communication speed history information recorded in the mobile station shown in FIG. 1.
- FIG. 11 is a diagram showing a channel configuration in HSDPA.
- the mobile station device (hereinafter simply referred to as “stationary station”) is not relied upon to clearly indicate the place where the high-speed data communication service can be received or the speed estimation by a fixed station device such as a wireless base station (hereinafter simply referred to as “fixed station”). "Mobile station”) enables independent (independent) speed prediction.
- the mobile station can independently perform high-speed data communication at a location (position) and time.
- the “communication speed history information” necessary to predict the interband is recorded in the mobile station each time data communication is performed.
- the “communication speed history information” includes, for example, (1) location information of a mobile station, (2) information on time or time zone for data communication, and (3) data communication speed information.
- the mobile station can independently perform high-speed operation based on the above-mentioned "communication speed history information" without using the equipment on the fixed station side in a place where the place where the received electrolysis strength is high is not specified. It is possible to predict the place and time zone where the data communication service can be received.
- time information in (2) above is not essential information, but at least the location information of the mobile station in (1) and the data communication speed information in (2) are moving. If it is recorded in the station, it is possible to predict where at least high-speed data communication services can be received.
- FIG. 1 is a block diagram showing a configuration of a mobile communication system according to an embodiment of the present invention.
- the mobile communication system shown in FIG. 1 includes mobile stations 1 such as mobile phone terminals, GPS 2, radio base stations, and the like. If the mobile station 1 is focused on the functions of its main part, for example, the display unit 11, the data communication control unit 12, the communication speed prediction control unit 13, and the communication speed history storage are configured.
- a unit 14, a position detection unit 15 and an input unit 16 are provided.
- the data communication control unit 12 performs control necessary for data communication by the fixed station 3 such as a base station, for example, the HSDPA, and the HS- Receive PDSCH periodically and check whether the data addressed to your station is transmitted on HS—PDSCH (including whether it is a new transmission or retransmission), and the quality of the received signal (for example, SIR)
- the result is transmitted to the fixed station 3 as the CQI for determining whether the downlink radio environment is good or not, and a CRC check is performed on the received data after decoding.
- the process includes transmitting an ACK signal to the fixed station 3 if the check result is OK and a retransmission request (NACK signal) to the fixed station 3 if the CRC check result is NG (CRC error).
- HSDPA fixed station 3 also shares data transfer in this example as described above. It is best-automatic with a (common) channel, and the modulation method and error correction coding rate are dynamically changed according to the amount of noise in the radio section and the strength of the power. That is, HSDPA adopts an adaptive coding modulation system, for example, adaptively switching between a QPSK modulation system and a 16-value QAM system according to the radio environment between a base station and a mobile station. Become.
- the position detection unit 15 detects the current position information of the mobile station 1 using, for example, GPS2, and the input unit 16 includes position information designated by the user, a time scheduled to start data communication, or It accepts inputs such as time zone information (hereinafter simply referred to as “time information”).
- time information such as time zone information
- the communication speed prediction control unit 13 measures the communication speed (average speed) each time the mobile station 1 performs data communication, and information on the communication speed and the current position of the mobile station 1 acquired by the position detection unit 15. A set of position information and time information for the data communication is stored (recorded) in the communication speed history storage unit (recording means) 14 as “communication speed history information 141”.
- the measurement of the data communication speed can also determine the data amount (size) force received within a certain period.
- the data communication speed depends on the CRC check result (OK ZNG) (when the frequency of NG is high, retransmission requests occur frequently and the data communication speed decreases), so the CRC check in the data communication control unit 12
- the data communication speed can also be obtained based on the result (frequency of OK or NG).
- the communication speed prediction control unit 13 uses the position information, time information and the like input (designated) from the input unit 16 as key information, and the communication speed history information (hereinafter, (It is simply referred to as “history information”) 141 has a function of calculating a communication speed expected at a specified position, time, or time zone based on 141 and displaying the result on the display unit 11.
- the communication speed prediction control unit 13 is based on the history information 141 in the communication speed history storage unit 14 /, and has a position and time at which data communication at a desired communication speed is possible!
- the display unit 11 functions as a presentation unit that presents a prediction result by the communication speed prediction control unit 13 serving as the prediction unit to the user.
- the communication speed prediction control unit 13 allows the mobile station 1 to receive a high-speed data communication service.
- the data communication control unit 12 automatically starts data communication with the fixed station 3. That is, the communication speed prediction control unit 13 determines whether or not data communication at the communication speed desired by the user is possible based on the prediction result, and the data communication at the communication speed by the determination means. It also functions as an automatic data communication starting means that automatically starts data communication when it is determined that the data communication is possible.
- the communication speed history storage unit 14 is configured by a required recording medium such as a RAM, and the display unit 11 is configured by a liquid crystal display or the like.
- the mobile station 1 makes a data communication start request to the fixed station 3 by the data communication control unit 12 (step A1), and a response to this (data communication start response) ) (Step A2), the communication speed prediction control unit 13 is requested to start recording history information (step A3).
- step A5 when the data communication control unit 12 receives data from the fixed station 3 (step A5), the data communication control unit 12 notifies the communication speed prediction control unit 13 of the size of the received data (step A6). .
- the communication speed prediction control unit 13 receives the data size notification from the data communication control unit 12 (Yes route in step A7 and No route in step A8) as long as there is reception data that continues until the timer expires. When there is no more data, calculate the communication speed (average speed) from the data size received so far (from the No route of Step A7 to Step A9).
- the communication speed prediction control unit 13 makes a position information acquisition request to the position detection unit 15 (step A10), and the position detection unit 15 moves using the GPS 2 in response to this request. Get the current location information (latitude, longitude) of station 1 (steps Al l, A12). The acquired position information is notified to the communication speed prediction control unit 13 (step A13), and the communication speed prediction control unit 13 includes the position information, time information for performing data communication, and information on the calculated communication speed. The set is recorded and saved in the communication speed history storage unit 14 as the history information (table) 141 (see step A14 and the dotted arrow in FIG. 2).
- step A15 the communication speed prediction control unit 13 performs the processing from step A4 onward again, and stores history information 141 in the communication speed history storage unit 14. Record and save.
- the position information acquisition timing by the position detection unit 15 does not necessarily have to be calculated after the communication speed is calculated as described above, but may be after a communication speed recording start request from the data communication control unit 12. It may be performed in parallel during communication speed calculation.
- the communication speed prediction control unit 13 As described above, every time data communication is performed between the mobile station 1 and the fixed station 3, the data size received by the communication speed prediction control unit 13 within a predetermined sampling period by the timer is received. The communication speed is calculated from the mobile station 1 and the current location information of the mobile station 1 is received from the GPS 2 and recorded in the communication speed history storage unit 14 as history information 141 in combination with the information of the time zone during which data communication was performed. Go.
- the communication speed is calculated as an average speed from the time until the start of communication at the application level (at the time of connection), the time until the end of communication (at the time of disconnection), and the total amount of received data during that time. Also good. In addition, the calculation of the communication speed must be performed every time! This is not a property and can be performed intermittently.
- the user of the mobile station for example, on the "time designation screen” displayed on the display unit 11 as shown in FIG.
- the position (location) of the communication speed prediction target is displayed on the “position selection screen” displayed on the display unit 11 as shown in FIG. ) Is specified.
- Information on the specified time and position is sent to the communication speed prediction control unit 13 through the input unit 16. It is input as a speed prediction request.
- a map is displayed on the “position selection screen”, and by specifying (pointing) the location where the communication speed is to be predicted on the map, the location information (latitude, Longitude) is input.
- the communication speed prediction control unit 13 receives the speed prediction request (step B1) by the above information input operation, as shown in FIG. 4, the communication speed prediction control unit 13 Referring to the history information 141 in Fig. 14, the communication speed prediction value at the specified time and place is calculated (step B2), and the calculation result (communication speed prediction result) is shown in Fig. 3 (C), for example. It is displayed on the display unit 11 as a “speed prediction result screen” (step B3).
- the user of the mobile station 1 can determine (predict) whether or not the user can receive a data communication service at a desired communication speed at a specified time or time zone and place. .
- the mobile station 1 searches for and displays position candidates that can independently perform high-speed data communication based on the history information 141. While explaining.
- the user of the mobile station 1 determines the position range (for example, within a radius of 200 m) of the communication speed prediction target on the “designation screen” displayed on the display unit 11 as shown in FIG. 5 (A), for example.
- the desired data communication speed for example, 1 Mbps or higher, etc.
- the position selection screen displayed on the display unit 11 as shown in FIG. In the same way, specify the position (location) for communication speed prediction.
- Information on the specified position range, desired speed, and position is input as a position search request to the communication speed prediction control unit 13 through the input unit 16.
- a map is displayed on the “position selection screen”. By specifying (pointing) the location where the communication speed is to be predicted on the map, the location information (latitude , Longitude) will be entered.
- step C1 when the communication speed prediction control unit 13 receives the position search request (step C1), the communication speed prediction control unit 13 stores the history in the communication speed history storage unit 14 as shown in FIG. Referring to information 141, the specified condition (position range and desired The entry matching the (speed) is searched (step C2), and the search result is displayed on the display unit 11 as a “search result list screen” as shown in FIG. 5C (step C3).
- the position (place) of the candidate (list) is represented on a map displayed as a "search result position screen" on the display unit 11 as shown in FIG. 5D, for example. You can also These “search result list screen” shown in FIG. 5 (C) and “search result position screen” shown in FIG. 5 (D) can be switched as appropriate by the screen switching operation of the user.
- the current position information of the mobile station 1 and the position where the communication speed prediction control unit 13 is predicted to be able to perform data communication at a desired communication speed is predicted to be able to perform data communication at a desired communication speed.
- the current position of the user The position to be predicted to receive the high-speed data communication service, which is the search result (if there is more than one, for example, from the current position of the user to the nearest position)
- the direction can also be displayed with an arrow or the like. In this way, the user of the mobile station 1 can easily move (reach) to a place where the desired high-speed data communication service can be received.
- the position range and desired speed are specified as input information (search conditions) by the user, but in addition to these, the time zone in which data communication is desired is also exempted as a search condition. Say it with a word.
- the user of the mobile station for example, on the “search key designation screen” displayed on the display unit 11 as shown in FIG. 01:00), position range (for example, within a radius of 200m), desired speed (for example, 1Mbps or more), and the “position” displayed on the display unit 11 as shown in FIG.
- position range for example, within a radius of 200m
- desired speed for example, 1Mbps or more
- position displayed on the display unit 11 as shown in FIG.
- the position (location) of the communication speed prediction target is designated in the same manner as described above.
- the communication speed prediction control unit 13 receives the search request (step D1) as shown in FIG. 8 by a powerful information input operation, the communication speed prediction control unit 13 transmits the communication speed history storage unit 14 Referring to the history information 141, search for an entry that matches the specified conditions (position range and desired speed) (step D2). It is displayed on the display unit 11 as a “screen” (step D3).
- the positions (places) of the candidates (lists) are displayed on the map displayed as the "search result position screen" on the display unit 11 as shown in FIG. 7D, for example. It can also be expressed.
- the “search result list screen” shown in FIG. 7 (C) and the “search result position screen” shown in FIG. 7 (D) can be switched as appropriate by the screen switching operation of the user.
- candidates matching the user's wish (condition) are searched from the history information 141 and displayed.
- the position registered as the history information 141 in the communication speed history storage unit 14 can be simply displayed (map display) on the map display screen.
- the display unit 11 functions as a map display unit that displays a map of positions where high-speed data communication at a predetermined speed or higher was possible in the past based on the history information 141 in the communication speed history storage unit 14. .
- the user of the mobile station 1 can easily determine the nearest place where it is predicted that the desired high-speed data communication can be received from the current position based on the map display.
- data communication control unit 12 automatically starts data communication with fixed station 3 This will be described with reference to the sequence diagram shown in FIG.
- the communication speed prediction control unit 13 checks whether or not there is a communication reservation and whether or not the automatic communication setting is valid (steps El and E2). And if automatic communication setting is enabled (Yes in steps E1 and E2) A position information acquisition request is sent to the position detector 15 (step E3). Note that the above check is repeated if there is no communication reservation (No in Step E1), or if automatic communication setting is disabled even if there is a communication reservation (No in Step E2). Automatic data communication is not performed.
- the position detection unit 15 that has received the position information acquisition request acquires the current position information of the mobile station 1 from the GPS 2 (steps E4 and E5), and passes this to the communication speed prediction control unit 13. (Step E6).
- the communication speed prediction control unit 13 receives the position information
- the communication speed prediction control unit 13 refers to the history information 141 in the communication speed history storage unit 14 and determines whether the user's desired high-speed data communication is possible at the current position of the mobile station 1. Make a decision (step E7).
- step E7 When it is determined that high-speed data communication is possible, that is, when it is determined that mobile station 1 has reached an area where high-speed data communication is possible (Yes in step E7), the communication speed prediction control unit 13 A data communication start request is sent to the communication control unit 12 (step E8). Thus, the data communication control unit 12 sends a data communication start request to the fixed station 3 and starts data communication (steps E9, E10, El l).
- the user can be notified by sound or vibration (vibrator function) as a notification means.
- the history information 141 described above can also be shared by a plurality of mobile stations 1 that the mobile station 1 does not need to construct independently. For example, as shown in Fig. 10, mobile station 1B has performed data communication in the past! / Cunning! ⁇ When predicting the communication speed of a location, from a mobile station 1A that has previously performed data communication at the location, a short-range communication represented by infrared communication, a server represented by e-mail or the web, etc. (Communication apparatus)
- the history information 141 can be shared by the mobile stations 1A and 1B by receiving the history information 141 directly or indirectly using communication via 4.
- the data communication control unit 12 of the mobile station 1A functions as a transmission means for transmitting the history information 141 directly to the other mobile station 1B via the server 4,
- the data communication control unit 12 of the station 1B also functions as a receiving unit that receives the history information.
- the communication speed prediction control unit 13 of the mobile station 1B performs the data communication control unit 12 in this way. Based on the history information 141 received by the above, it becomes possible to perform the operations described in the items (B2) to (B5).
- the mobile station apparatus can uniquely predict the location where the data communication service of the desired communication speed can be received without depending on the base station apparatus side equipment. Therefore, it becomes possible to easily receive high-speed data communication service with high probability in the mobile station device. Therefore, it is considered extremely useful in the wireless communication field.
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JPWO2009028589A1 (ja) * | 2007-08-28 | 2010-12-02 | シャープ株式会社 | 通信装置 |
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JP2000069567A (ja) * | 1998-08-20 | 2000-03-03 | Canon Inc | 無線通信システム、無線端末装置、通信速度制御方法および記憶媒体 |
JP2003249887A (ja) * | 2002-02-22 | 2003-09-05 | Sony Ericsson Mobilecommunications Japan Inc | 通信品質レベル制御システム及び履歴情報蓄積装置 |
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JPWO2009028589A1 (ja) * | 2007-08-28 | 2010-12-02 | シャープ株式会社 | 通信装置 |
JP2010177945A (ja) * | 2009-01-28 | 2010-08-12 | Sony Corp | 情報提供装置、移動通信装置、情報提供システム、情報提供方法、およびプログラム |
CN101815310A (zh) * | 2009-01-28 | 2010-08-25 | 索尼公司 | 信息提供装置、移动通信装置、信息提供系统、方法和程序 |
US8244227B2 (en) | 2009-01-28 | 2012-08-14 | Sony Corporation | Information providing device, mobile communication device, information providing system, information providing method, and program |
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