WO2006051578A1 - Méthode de contrôle de communication, appareil de contrôle de station de base sans fil, station de base sans fil et terminal sans fil - Google Patents

Méthode de contrôle de communication, appareil de contrôle de station de base sans fil, station de base sans fil et terminal sans fil Download PDF

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Publication number
WO2006051578A1
WO2006051578A1 PCT/JP2004/016570 JP2004016570W WO2006051578A1 WO 2006051578 A1 WO2006051578 A1 WO 2006051578A1 JP 2004016570 W JP2004016570 W JP 2004016570W WO 2006051578 A1 WO2006051578 A1 WO 2006051578A1
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WO
WIPO (PCT)
Prior art keywords
base station
radio base
radio
terminal
rate control
Prior art date
Application number
PCT/JP2004/016570
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English (en)
Japanese (ja)
Inventor
Masaya Akihara
Original Assignee
Mitsubishi Denki Kabushiki Kaisha
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Denki Kabushiki Kaisha filed Critical Mitsubishi Denki Kabushiki Kaisha
Priority to PCT/JP2004/016570 priority Critical patent/WO2006051578A1/fr
Publication of WO2006051578A1 publication Critical patent/WO2006051578A1/fr

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Classifications

    • 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 communication control method, a radio base station control device, a radio base station, and a radio terminal for controlling an uplink transmission rate of terminal power in the field of mobile communication systems.
  • 3GPP 3rd generatio n partnership Partnership Project
  • the wireless transmission rate control method that allows the station to control the transmission rate and perform high-speed uplink data transmission is standardized. This content is described in 3GPP TR (Technical Report) 25. 896 Version 6.0. 0 (Non-patent Document 1).
  • E-DCH Dedicated CHannel
  • E-DCH setting request When a wireless terminal moves and enters a handover region where cells of wireless base station P and wireless base station Q overlap, the wireless terminal transmits an E-DCH setting request to wireless base station Q, E-DCH is set between the radio base station Q and the radio terminal by a predetermined procedure.
  • Non-Patent Document 1 3GPP TR (Technical Report) 25. 896 V6. 0. 0 Disclosure of Invention
  • the wireless terminal increases the uplink transmission rate based on the permission signal from the wireless base station Q, the amount of interference power at the wireless base station device P that transmitted the failure may increase. There is sex.
  • the present invention has been made to solve the above-described problems, and in particular, in the case of a handover in which a terminal sets E-DCH with a plurality of base stations, a plurality of By specifying the radio base station that is appropriate for performing the control when the radio base station controls the uplink transmission rate in the radio section with one radio terminal (determines whether the transmission rate can be changed). It aims at suppressing the amount of interference as a network.
  • the present invention is a communication control method in a radio communication system including a radio terminal, a radio base station that performs radio communication with the radio terminal, and a radio base station control device that controls the radio base station.
  • a handover state detecting step for detecting that the wireless terminal is connected to a plurality of the wireless base stations, and any one of the plurality of wireless base stations connected to the wireless terminal.
  • a rate control radio base station determination step for determining a rate control radio base station having the right to determine whether or not to accept a transmission rate change request.
  • FIG. 1 is a configuration diagram of a network in the present invention.
  • FIG. 2 is a functional block diagram of a radio base station controller of the present invention.
  • FIG. 3 is a functional block diagram of a radio base station according to the present invention.
  • FIG. 4 is a functional block diagram of a wireless terminal according to the present invention.
  • FIG. 5 is a flowchart of E-DCH setting in Embodiment 1 of the present invention.
  • FIG. 6 is a flowchart of rate control in the first embodiment of the present invention.
  • FIG. 7 is a flowchart of rate control in the second embodiment of the present invention.
  • FIG. 8 is a flowchart of rate control resetting in the third embodiment of the present invention. Explanation of symbols
  • FIG. 1 is a configuration diagram of a network in this embodiment
  • FIG. 2 is a functional block diagram related to this embodiment of the radio base station controller
  • FIG. 3 is related to this embodiment of the radio base station.
  • Functional block diagram Fig. 4 is a functional block diagram related to this embodiment of the wireless terminal
  • Fig. 5 is a flowchart of E-DCH setting in this embodiment
  • Fig. 6 is a rate control permission in this embodiment. It is a flowchart of.
  • 1 is a radio base station A
  • 2 is a radio base station B
  • 3 is a radio terminal
  • 4 and 5 are cell A indicating the radio wave coverage of radio base station Al and radio base station B2, respectively.
  • B part of which overlaps.
  • 6 is a radio base station controller (base station controller) that controls the radio base station Al and radio base station B2
  • 7 is a core network that connects the radio base station controller 6 to other radio base station controllers.
  • Cell A4 and cell B5 above overlap This part is called a “node over area”.
  • the wireless base station Al, the wireless base station B2, and the wireless terminal 3 each perform wireless communication using a CDMA (Code Division Multiple Access) method. Absent. Radio base station Al, radio base station B2, and radio base station control device 6 perform wired communication.
  • CDMA Code Division Multiple Access
  • the high-speed dedicated channel allocated to each wireless terminal 3 used in this method is called Enhanced-Dedicated CHannel described in 3GPP rd generation Partnersnip Project) TR (Technical Report 25. 89 6). In this specification, it is called E-DCH.
  • 21 is a receiving unit that receives a signal from the radio base station Al, the radio base station B2, or the radio terminal 3
  • 22 is a radio base station Al, and the radio base station B2
  • 23 is a measurement information management unit that manages measurement information from the wireless base station Al, the wireless base station B2, or the wireless terminal 3
  • 24 is a high-speed uplink E in the wireless section.
  • E DCH setting management unit for setting and managing DCH
  • 25 Determining the radio base station (rate control radio base station) that performs uplink rate control in the radio section
  • E DCH rate control radio base station management unit (Rate control radio base station management means).
  • 31 is a terminal signal receiving unit that receives a signal from the radio terminal 3
  • 32 is a terminal signal transmitting unit (transmitting means) that transmits a signal to the radio terminal 3
  • 33 is nothing.
  • Rate control unit (rate control means) that performs rate control on E-DCH at line terminal 3
  • 34 is an E-DCH setting management unit
  • 35 is a control station signal that transmits a signal to radio base station controller 6
  • 36 is a control station signal receiving unit that receives a signal of radio base station control transmission power
  • 37 is a measurement control unit (measurement control means) that measures a radio wave state.
  • 41 is a signal transmission unit (transmission means) that transmits a signal to the radio base station
  • 42 is a signal reception unit that receives a signal from the radio base station
  • 43 is a radio wave receiver.
  • 44 is an E-DCH control unit that sets the E-DCH
  • 45 is a data transmission control unit that controls the transmission of data on the E—DCH
  • 46 is an E— This is an E-DCH rate controller that controls the rate on the DCH.
  • the wireless terminal 3 has already set E-DCH (S51) with the wireless base station A1 in the cell A4 of the wireless base station A1, and the wireless base station A1 is on the E-DCH. Assume that rate control is being implemented.
  • the radio terminal 3 measures the radio wave state received from the radio base station A1 by the measurement control unit 43, and notifies the radio base station A1 of the measurement result (terminal reception state measurement result) from the signal transmission unit 41 (S52).
  • the terminal signal receiving unit 31 receives the reception status measurement result notification from the radio terminal 3, and the control station signal transmitting unit 35 sends the terminal reception status measurement result notification to the radio base station control device. Forward to 6. Further, the radio base station A1 also measures the radio wave state by the measurement control unit 37, and notifies the measurement result (base station reception state measurement result) from the control station signal transmission unit 35 to the radio base station control device 6 (S53). The order of the reception status measurement result notifications S52 and S53 is not limited to this and is arbitrary.
  • the radio base station controller 6 receives the measurement results from the radio terminal 3 and the radio base station A1 at the reception unit 21, and accumulates and manages the measurement results in the measurement information management unit 23 (S54).
  • the E-DCH is set from the E-DCH control unit 44 to the wireless base station B2 via the signal transmission unit 41.
  • a request is transmitted (S55).
  • the E-DCH setting request signal from the radio terminal 3 is transferred to the radio base station controller 6 through the terminal signal receiver 31 and the control station signal transmitter 35.
  • the radio base station controller 6 receives the E-DCH setting request from the radio terminal 3 at the receiving unit 21 and confirms whether or not the E-DCH setting can be set by the E-DCH setting management unit 24.
  • the unit 22 is used to transmit an E-DCH setting instruction to the radio base station B2 (S56). Whether the E-DCH setting management unit 24 can set the E-DCH is determined, for example, from the remaining resources (transmission power, code number, etc.) of the target radio base station B2.
  • the E-DCH setting instruction is received from the control station signal receiving unit 36, and E
  • the DCH setting unit 34 sets E-DCH with the wireless terminal 3 (S57).
  • the radio base station B2 that has completed the E-DCH setting with the radio terminal 3 notifies the radio base station control device 6 that the setup has been completed (S58).
  • the radio base station controller 6 detects in the E—DCH setting management unit 24 that the radio terminal 3 is connected to the radio base stations Al and B2 and is in the SHO (Soft Handover: S59) Wireless base station B In 2, the radio wave condition is measured by the measurement control unit 37 in the same manner as the radio base station Al, and the measurement result is notified from the control station signal transmission unit 35 to the radio base station control device 6 (60).
  • the radio base station controller 6 receives the measurement information from the radio base station B2 at the reception unit 21, and stores and manages the measurement results in the measurement information management unit 23 (61).
  • the radio wave state (measurement result) measured by the wireless terminal is the reception power value of the pilot signal common to the wireless terminals in the same cell or the transport channel.
  • the block error rate is described in 3GPP as TS25.302V3.1, CH, CPI, ri Received Signal Code Power and Transport channel block error rate (BLER).
  • the radio wave conditions (measurement results) measured by radio base stations Al and B2 are the total received power value, the ratio of the total transmission power to the maximum transmission power, the signal-to-interference ratio (interference wave ratio: SIR), the transformer The bit error rate of the port channel, etc.
  • SIR signal-to-interference ratio
  • Wideband power ⁇ Transmitted Carrier Power ⁇ Signal to Interference Ratio and Transport channel BER (bit error rate).
  • the radio base station controller 6 also receives the radio base station Al, the radio base station B2, and the radio terminal 3 and based on the measurement result information stored in the measurement information management unit 23, the E-DCH rate
  • the control radio base station management unit 25 determines whether the radio base station (rate control radio base station) that performs rate control on the E-DCH is either the radio base station A1 or the radio base station B2 (S62).
  • which radio base station is to be determined as the rate control radio base station is selected, for example, by selecting a radio base station having a larger interference power value and a larger one (SIR is greater or smaller) and If the SIRs of the base stations are the same, for example, the bit error rate (corresponding to the transport channel BER) is small, and the radio base station with the smaller one is selected.
  • the radio base station B2 is selected as the rate control radio base station.
  • the radio base station controller 6 that has determined the E-DCH rate control radio base station in the E-DCH rate control radio base station management unit 25 is not selected as the E-DCH rate control radio base station.
  • An instruction to stop E-DCH rate control is transmitted to the radio base station (radio base station A1 in this example) via the transmitter 23 (S63).
  • Wireless base station Al The E-DCH rate control stop instruction is received by the rate control unit 33 via the signal receiving unit 36, and the E-DCH rate control process for the wireless terminal 3 is stopped (S64).
  • the E-DCH rate control unit 46 that has received the rate increase request transmits an E-DCH rate increase request via the signal transmission unit (S65).
  • the rate controller 33 determines whether or not the E-DCH rate control in the radio terminal 3 is necessary. In this example, since the radio base station A1 has received the rate control stop instruction related to the radio terminal 3, it determines that the rate control is unnecessary and discards (ignores) the rate increase request (S66). Similarly, in the radio base station B 2, the terminal signal receiving unit 31 receives the rate increase request, and the rate control unit 33 determines whether or not rate control needs to be performed. In this example, since the radio base station B2 is a rate control radio base station for the radio terminal 3, control is necessary, and it is determined whether or not the remaining amount of resources, etc. can be increased, and the terminal signal transmission unit 32 is used. The control result is transmitted to the wireless terminal 3 (S67). In this example, the rate increasing rate NG may be OK.
  • the power to notify the permitted rate from the wireless base station B2 to the wireless terminal 3 at the same time is, for example, the following (1) and (2) as a notification method of this rate.
  • TBS Transport Block Size
  • TTI Transmission Time Interval
  • 3GPP TS25.302 TBS and TTI are TF (Transport Format).
  • the result of rate increase control is received by E-DCH rate control unit 46 via signal receiving unit 42, and the control result is determined (S68). If the rate increase is OK, the result is notified to the data transmission control unit 45, the transmission data rate is increased, and the data transmission is transmitted via the signal transmission unit 41. If the rate increase control result is NG, the data transmission control unit 45 is notified to that effect. Know and transmit data without increasing the data rate.
  • the rate control radio base station has the right to determine whether or not to increase in response to a rate increase request from a radio terminal.
  • S52 is a terminal reception state measurement result notification step in the present invention.
  • S53 and S60 are a base station reception state measurement result notification step
  • S59 is a handover state detection step.
  • S62 is a rate control radio base station determination step
  • S63 is a rate control stop instruction step
  • S64 is a rate control stop instruction reception step
  • S65 and S71 are rate change request transmission steps
  • S66 is a rate change request discard step
  • S69 Is a rate control radio base station information notification step
  • S70 is a rate control radio base station control information reception step
  • S74 and S75 are rate permission result determination steps
  • S76 is a rate control start instruction step.
  • the E-DCH setting management unit 24 is a handover state detecting means in the present invention.
  • an E-DCH rate increase request transmitted from the wireless terminal device at S65, S71, etc. is an uplink transmission rate change request, and a response to whether the rate increase is transmitted from the wireless base station at S67, S72, S73, etc. Is an uplink transmission rate change instruction.
  • the E-DCH is set by the radio base station controller, and the most suitable radio base station is selected from all the radio base stations. — Since it is configured not to implement DCH rate control processing, it is possible to control the E—DCH data rate with reduced interference, enabling efficient use of resources and efficient data transmission as a system. .
  • the base station with the larger interference power value is selected. If the interference power values are the same, the base station with the smaller bit error rate is selected.
  • each measurement item measured by the wireless terminal and the wireless base station for example, 3GPP, CPICH Received Signal Code Power, Transport channel block error rate, As a measurement item of a station, priority may be given to Received fotai Wideband power ⁇ Transmitted and arrier Power ⁇ bignal to Interference Ratio, Transport channel BER) as a reference for selection.
  • a radio base station having a larger CPICH Received Signal Code Power and a radio base station having a smaller Transport channel BER are selected for measurement items of the radio terminal.
  • the measurement result of the highest priority measurement item is defined as the radio base station with the higher Transmitted Carrier Power, the radio base station with the larger Signal to Interference Ratio, and the radio base station with the smaller Transport channel BER.
  • the base station is determined, and if the measurement result of the highest priority measurement item is equal, the base station is determined based on the measurement result of the next priority.
  • the rate control radio base station may be determined based on the measurement item.
  • the rate control radio base station up to that point continues as the rate control radio base station. Also good.
  • the reception state measurement result notifications S53 and S60 from the wireless base stations Al and B2 in FIG. 5 are deleted as the criterion for determining the rate control wireless base station.
  • the reception state measurement result notification S52 from the radio terminal may be deleted as a criterion for determining the rate control radio base station.
  • the rate control radio base station determination (S62) can be started before receiving all reception state measurement result notifications, the processing is speeded up and the configuration of the radio base station control device 6 is simplified.
  • the rate control radio base station may be determined by majority decision of the number of radio base stations selected by each measurement item, or may be determined by weighting each measurement item. In this case, the influence of measurement error can be minimized.
  • the terminal reception state measurement result notification (S52) from the wireless terminal 3 and the base station reception state measurement result notification (S53) from the wireless base station A1 are sent before the SHO detection (S59). However, in this case, it may be after SHO detection (S59).
  • the terminal reception state measurement result notification is transmitted to the radio base station controller 6 through both the radio base station Al and the radio base station B2.
  • one rate-controlled radio base station can be determined in the same manner from three or more radio base stations, which are described using two radio base stations as an example.
  • the request for changing the uplink transmission rate is a request for maintaining or decreasing the transmission rate, not just the request for increasing the power, which explains the case where the request for changing the transmission rate is a request for increasing the transmission rate.
  • the transmission rate change instruction transmitted from the radio base station is transmitted in response to the transmission rate change request from the radio terminal.
  • the radio base station may voluntarily transmit, for example, when there is room in the resources of the radio base station.
  • E-DCH is set between a radio terminal and a radio base station
  • other channels may be used without being limited thereto.
  • Embodiment 1 an example has been described in which the radio base station control device selects a rate control radio base station and transmits an instruction to stop E-DCH rate control to the radio base station that has not been selected.
  • an example is shown in which a radio base station control device that has selected a rate control radio base station transmits rate control radio base station information to a radio terminal.
  • FIG. 7 is a flowchart of the operation in this embodiment. The same numbers as those in FIG. 6 indicate the same operations.
  • radio base station control apparatus 6 determines a rate control radio base station that performs E-DCH rate control by the same procedure as in the first embodiment (S62).
  • the radio base station control device 6 uses the rate control radio base station information describing the rate control radio base station that performs E-DCH rate control as an E-DCH rate control radio base station as a result of the determination.
  • rate control wireless base station information describing the rate control radio base station that performs E-DCH rate control as an E-DCH rate control radio base station as a result of the determination.
  • the management unit 25 Created by the management unit 25 and transmitted from the transmission unit 22 via the wireless base station A1 and wireless It transmits to the wireless terminal 3 through two routes via the base station B2 (S69).
  • rate control wireless base station information is received by E-DCH rate control unit 46 via signal receiving unit 42, and the wireless base station that performs E-DCH rate control of its own terminal is not shown in the storage unit.
  • Store (S 70) In this example, it is assumed that the radio base station control device 6 has created rate control radio base station information specifying the radio base station B2 as a radio base station that performs E-DCH rate control.
  • E-DCH Request determines that the data to be transmitted needs to use a higher data rate from the transmission buffer amount (not shown)
  • E-DCH Request determines that the data to be transmitted needs to use a higher data rate from the transmission buffer amount (not shown)
  • E-DCH Request s the rate controller 46 to increase the E-DCH rate.
  • the E-DCH rate control unit 46 that has received the rate increase request transmits an E-DCH rate increase request via the signal transmission unit 41 (S71).
  • the radio base station Al that has received the rate increase request at the terminal signal receiving unit 31 determines whether or not the rate can be increased based on the resource remaining amount of its own station, and the control result is transmitted via the terminal signal transmitting unit 32 to the wireless terminal. Send to 3 (S72). In this example, rate increase OK is acceptable. Similarly, the radio base station 2 determines whether or not the rate can be increased, and transmits the control result to the radio terminal 3 (S73). In this example, rate increase OK is acceptable.
  • the result of rate increase control from wireless terminal A1 is received by E-DCH rate control unit 46 via signal receiving unit 42, and the control result is determined with reference to the rate control radio base station information. .
  • the control result notification from the radio base station A1 is discarded (S74).
  • the E-DCH rate control unit 46 determines the rate control result notification from the radio base station B2 with reference to the rate control radio base station information, and the radio base station 2 is designated as the E DCH rate control radio base station. Therefore, this control result notification is validated, and since the control result (OKZNG) is OK, the transmission data rate is changed (S75).
  • the E-DCH is set by the radio base station controller, and the optimum radio base station is selected from all the radio base stations and notified to the radio terminal.
  • the radio terminal selects Because it was configured to ignore the limited rate control of radio base stations, it was possible to control the E-DCH data rate with reduced interference, enabling efficient use of resources and efficient data transmission as a system.
  • the base station is a rate-controlled base station
  • the processing of the radio base station that does not need to determine whether or not is reduced, and the configuration can be simplified.
  • Embodiments 1 and 2 above the power shown when a new radio base station for setting E-DCH is added.
  • radio that performs E-DCH rate control due to changes in the radio environment, etc. An example of changing the base station is shown.
  • the configurations of the network, the radio base station control device, the radio base station, and the radio terminal in this embodiment are the same as those in FIG. 1 and FIG. 4 described in the first embodiment, respectively.
  • FIG. 8 is a flowchart of the operation in this embodiment.
  • the same reference numerals as those in FIGS. 5 and 6 are the same processes as those in the first and second embodiments, respectively.
  • the wireless terminal 3 has already set E-DCH between the wireless base station Al and the wireless base station B2, and the wireless base station B2 is a rate control wireless base station that performs E-DCH rate control. Suppose that it is specified.
  • the radio terminal 3, the radio base station Al, and the radio base station B2 measure the radio wave conditions, and the radio base station controller 6 measures them.
  • the result is notified (S52) (S53) (S60).
  • the notification from the wireless terminal 3 in S52 is notified to the wireless base station control device 6 through (transferred by) both the wireless base station Al and the wireless base station B2.
  • the radio base station controller 6 stores and manages the notification of the measurement result (S 61).
  • the radio base station control device 6 determines a rate control radio base station that performs E-DCH rate control in the same manner as in the first embodiment based on this measurement result notification (S62).
  • the radio base station controller 6 sends an E-DCH rate control stop instruction from the E-DCH rate control radio base station management unit 25 to the radio base station B2 via the transmission unit 22 (63), and the radio base station B2
  • the E-DCH rate control stop instruction is received by the rate control unit 33 via the control station signal receiving unit 36, the E-DCH rate control for the radio base station 3 is stopped (S64), and then the radio terminal 3
  • this rate increase request is discarded (similar to FIG.
  • the radio base station controller 6 transmits an instruction to start E-DCH rate control from the E-DCH rate control radio base station management unit 25 to the radio base station A 1 via the transmission unit 22 (S 76).
  • the radio base station A1 receives the instruction to the rate control unit 33 via the control signal receiving unit 36, starts rate control processing for the radio terminal 3 (S77), and receives a rate increase request from the radio terminal 3,
  • the rate control process for the request is started (similar to FIG. 6, S65 and S67 in the first embodiment).
  • the radio base station A1 designated as the rate control radio base station at this time is more suitable as the rate control radio base station than the radio base station B2. If it is determined, the operation returns to S52, and the reception state measurement results from the wireless terminal 3, the wireless base station A1, and the wireless base station B2 are transmitted to the wireless base station controller 6 again (S52, S53, S60). The operation force after S61 is repeated.
  • the timings of the reception status measurement result notifications S52, S53, and S60 are asynchronous, so the order may not be the same, and the radio base station controller 6 has three reception status measurements. As soon as the result notification is received, the E-DCH rate control radio base station determination of S62 is performed.
  • the radio base station controller 6 that synchronizes the timings of S52, S53, and S60 based on an instruction from the radio base station controller 6 can perform the E-DCH rate control radio base station of S62 at a constant cycle. Make a decision.
  • the measurement item is fixed to one of the deviations, and the measurement result is two base stations.
  • the measurement item in the radio terminal is fixed as the measurement item.
  • the reception status measurement result notifications S53 and S60 from the radio base stations Al and B2 in FIG. 8 are the measurement items that may be deleted as the determination criteria for determining the rate control radio base station.
  • the reception status measurement result notification S52 from the radio terminal may be deleted as a criterion for determining the rate control radio base station.
  • rate control radio base station determination (S62) is performed periodically or irregularly as necessary.
  • the processing is speeded up and the configuration of the radio base station control device 6 is simplified.
  • the E-DCH rate control stop instruction for transmitting the E-DCH rate control stop instruction may be transmitted first.
  • the radio base station control device transmits a rate control stop instruction to the radio base station that is out of the rate control radio base station (S64), and sends it to the new rate control radio base station.
  • the rate control start instruction is transmitted to the wireless terminal (S76).
  • the wireless base station information may be notified (FIG. 7, S69). In this case, the operation is the same as in FIG. 7, and it is not necessary for the radio base station to determine whether or not the radio base station is capable of rate control. The processing of the radio base station is reduced, and the configuration can be simplified.
  • the present invention can be applied to a communication system including a radio base station control device, a radio base station, and a radio terminal.

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  • Mobile Radio Communication Systems (AREA)

Abstract

Lorsqu’un terminal sans fil pénètre dans les cellules d’une pluralité de stations de base sans fil et que ces stations de base sans fil sont dans une situation telle qu’elles doivent contrôler pour le terminal sans fil les vitesses de transmission en amont de sections sans fil (déterminer si elles doivent changer les vitesses de transmission), il peut se produire, lorsque le terminal envoie une requête de changement des vitesses de transmission en amont, des différences d’appréciation sur le changement des vitesses de transmission entre les stations de base. Selon la présente invention, un appareil de contrôle de station de base sans fil sélectionne en tant que station de base sans fil de contrôle de vitesse une station de base sans fil parmi la pluralité, en utilisant une procédure prédéterminée.
PCT/JP2004/016570 2004-11-09 2004-11-09 Méthode de contrôle de communication, appareil de contrôle de station de base sans fil, station de base sans fil et terminal sans fil WO2006051578A1 (fr)

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PCT/JP2004/016570 WO2006051578A1 (fr) 2004-11-09 2004-11-09 Méthode de contrôle de communication, appareil de contrôle de station de base sans fil, station de base sans fil et terminal sans fil

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JP2004208197A (ja) * 2002-12-26 2004-07-22 Matsushita Electric Ind Co Ltd 無線通信システム、通信端末装置、および基地局装置
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