WO2013164895A1 - Wireless base station - Google Patents

Wireless base station Download PDF

Info

Publication number
WO2013164895A1
WO2013164895A1 PCT/JP2012/061616 JP2012061616W WO2013164895A1 WO 2013164895 A1 WO2013164895 A1 WO 2013164895A1 JP 2012061616 W JP2012061616 W JP 2012061616W WO 2013164895 A1 WO2013164895 A1 WO 2013164895A1
Authority
WO
WIPO (PCT)
Prior art keywords
transmission power
upper limit
wireless terminal
limit value
value
Prior art date
Application number
PCT/JP2012/061616
Other languages
French (fr)
Japanese (ja)
Inventor
和浩 山本
Original Assignee
Yamamoto Kazuhiro
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 Yamamoto Kazuhiro filed Critical Yamamoto Kazuhiro
Priority to PCT/JP2012/061616 priority Critical patent/WO2013164895A1/en
Publication of WO2013164895A1 publication Critical patent/WO2013164895A1/en

Links

Images

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/06TPC algorithms
    • H04W52/08Closed loop power control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/06TPC algorithms
    • H04W52/10Open loop power control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/30TPC using constraints in the total amount of available transmission power
    • H04W52/36TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/367Power values between minimum and maximum limits, e.g. dynamic range
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/30Connection release
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements
    • H04W52/0209Power saving arrangements in terminal devices
    • H04W52/0225Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0245Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal according to signal strength

Abstract

Provided is a communication system that is able to suppress power consumption by restricting a transmission-power upper-limit value in accordance with the intention of a user and so on. In a communication system (100), for each wireless terminal (2), a value that is lower than the maximum transmission power of the wireless terminal (2) in question is set as a transmission-power upper-limit value, and the transmission power of that wireless terminal (2) is controlled in such a way that the transmission-power upper-limit value of the wireless terminal (2) becomes the value set for that wireless terminal (2). It is therefore possible for power consumption to be suppressed by restricting the transmission-power upper-limit value of the wireless terminal (2) in accordance with the intention of the user and so on. Furthermore, it is possible for the effects of radio-frequency electromagnetic fields on the human body to be lessened.

Description

Wireless base station

The present invention relates to a communication system that controls communication performed by a wireless terminal via a communication network, and more particularly, to a transmission power control technique for a wireless terminal or a communication system.

In recent years, wireless terminals (hereinafter simply referred to as wireless terminals) in mobile communication systems such as mobile phones using batteries as power sources and mobile PCs with built-in communication devices have become widespread, and various power-saving technologies have been developed. Technology is being developed to make the best use of power consumption.

On the other hand, looking at the breakdown of the power consumption of wireless terminals, the ratio related to transmission is large. The transmission power is determined based on the signal strength and quality of a received signal received from a radio base station (hereinafter simply referred to as a radio base station) in a mobile communication system. .

As an example of the prior art, the technique described in Patent Document 1 is a technique for measuring transmission signal strength by measuring the strength of a received signal in wireless communication.

Japanese Patent Application Laid-Open No. 07-226710

However, conventional wireless terminals are intended to control transmission power by users (including users, guardians, managers, manufacturers, sellers, telecommunications carriers and others). Therefore, when the power is turned on, the transmission power cannot be reduced by a user or the like in order to reduce power consumption. For this reason, in an environment where radio waves from the radio base station are difficult to reach, the radio terminal transmits at the maximum output, which is one of the causes of consuming power against the expectation of users and the like.

An object of the present invention is to provide a communication system capable of suppressing power consumption by suppressing transmission power with the intention of a user or the like.

The radio wave radiated from the radio base station with a predetermined transmission power is received by the radio terminal after receiving a propagation loss in the route up to reception.

Similarly, radio waves radiated from the wireless terminal are received by the wireless base station after receiving the same loss amount as the propagation loss on the route up to reception. In this way, the transmission loss is the same between the transmission side and the reception side, so communication is symmetrical.

Usually, the maximum transmission power of a radio base station and a radio terminal is different.
Even when the transmission output of the radio base station and the radio terminal is different, the system design is made so that “symmetry of communication” is maintained in consideration of the antenna characteristics and the noise figure of the receiver.

Here, when only the transmission power of the wireless terminal is reduced, the signal received by the wireless base station becomes weak, and “communication symmetry” does not hold. In this state, in order to maintain “communication symmetry” only on the wireless terminal side, it is only necessary to reduce the reception sensitivity to match the transmission power reduced by the wireless terminal.

An object of the present invention is to make it possible to suppress transmission power with the intention of a user or the like while ensuring “symmetry of communication”.

[Invention 1] In order to achieve the above object, the communication system of Invention 1 is a communication system that is connected to a plurality of wireless terminals so as to be capable of wireless communication, and for each wireless terminal, an upper limit value of transmission power is set. A transmission power upper limit setting means for setting a value lower than the maximum upper limit value of the wireless terminal, and an upper limit value of the transmission power of the wireless terminal are set by the transmission power upper limit setting means for the wireless terminal. Wireless terminal control means for controlling the wireless terminal so as to obtain the same value.

Here, the communication includes communication (outgoing) performed by a transmitting-side wireless terminal or communication (receiving) performed by a receiving-side wireless terminal. Hereinafter, the same applies to the communication systems of Inventions 4, 7, 10, 13, 14, 16, 18, 21 to 28, and the wireless transceiver of Invention 42.

In addition, communication includes telephone calls, data communication, and other communications. Further, from the viewpoint of the hierarchy, communication at the physical layer level or communication at the logical layer level is included. Hereinafter, the same applies to the communication systems of Inventions 4, 7, 10, 13, 14, 16, 18, 21 to 28, and the wireless transceiver of Invention 42.

In addition, the maximum upper limit value of the transmission power is the maximum value of the transmission power that can be realized by the performance of the wireless terminal, or is necessary when the communication quality with the communication partner (for example, the communication system) is the minimum. The maximum transmission power according to the standard. Hereinafter, the same applies to the communication systems of Inventions 4, 7, 10, 13, 29, 32, 35, 38 and 41.

Further, the wireless terminal control means may have any configuration as long as it is configured to control the wireless terminal, for example, a configuration for controlling the transmission power of the wireless terminal, a transmission power of the wireless terminal Includes a configuration for controlling, setting or fixing the upper limit value, a configuration for controlling the reception performance of the wireless terminal, or a configuration for controlling, setting or fixing the upper limit value of the reception performance of the wireless terminal. Hereinafter, the same applies to the communication systems of the inventions 4, 7, 10 and 13.

In addition, the present system may be realized as a single device (for example, a radio base station), a terminal, or other devices, or a plurality of devices (for example, an exchange and a radio base station), a terminal, or other devices. You may make it implement | achieve as a network system connected so that communication was possible. In the latter case, each component may belong to any one of a plurality of devices and the like as long as they are connected so as to communicate with each other. The same applies to the communication systems of Inventions 4, 7, 10, 13, 14, 16, 18 to 21 and 28.

[Invention 2] The communication system of Invention 2 further includes transmission power upper limit value acquisition means for acquiring a value lower than the maximum upper limit value of the wireless terminal from the wireless terminal in the communication system of Invention 1, The transmission power upper limit setting means sets the value acquired by the transmission power upper limit acquisition means from the wireless terminal as the upper limit value of the transmission power of the wireless terminal.

Here, the transmission power upper limit value acquisition unit may have any configuration as long as the upper limit value of the transmission power is acquired. For example, the upper limit value of the transmission power is input from an input device or the like. The upper limit value of transmission power may be acquired or received from an external terminal or the like, or the upper limit value of transmission power may be read from a storage device or a storage medium. May be. Thus, acquisition includes at least input, acquisition, reception and reading. Hereinafter, the concept of acquisition is the same.

[Invention 3] Further, in the communication system of Invention 3, in the communication system of Invention 1, a transmission power upper limit for obtaining a value lower than the maximum upper limit value of the wireless terminal from a wireless terminal related to the wireless terminal. The transmission power upper limit value setting means includes a value acquired by the transmission power upper limit value acquisition means from a wireless terminal related to the wireless terminal as an upper limit value of the transmission power of the wireless terminal. Set.

Here, the wireless terminal related to the wireless terminal includes, for example, a wireless terminal that is a communication partner or a wireless terminal that is owned by family members, friends, employees, and other related parties. The same applies to the communication systems of Inventions 6, 9, 12, 13, 31, 34, 37, 40, and 41 below.

[Invention 4] Furthermore, the communication system of Invention 4 is a communication system that is connected to a plurality of wireless terminals so as to be able to perform wireless communication. For each wireless terminal, the maximum transmission power of the wireless terminal Transmission power upper limit value storage means for storing a transmission power upper limit value table in which a value lower than the upper limit value is stored, and an upper limit value of the transmission power of the wireless terminal is set in the transmission power upper limit value table for the wireless terminal Wireless terminal control means for controlling the wireless terminal so that the obtained value is obtained.

[Invention 5] Further, the communication system of Invention 5 is the communication system of Invention 4, in which the transmission power upper limit value acquisition means for acquiring a value lower than the maximum upper limit value of the wireless terminal from the wireless terminal; A transmission power upper limit value setting unit configured to set, in the transmission power upper limit value table, the value acquired by the transmission power upper limit value acquisition unit from the wireless terminal as the upper limit value of the transmission power of the wireless terminal.

[Invention 6] Furthermore, the communication system of Invention 6 is the communication system of Invention 4, wherein the upper limit of transmission power for acquiring a value lower than the maximum upper limit value of the wireless terminal from the wireless terminal associated with the wireless terminal. A value acquisition means and a value acquired by the transmission power upper limit value acquisition means from a wireless terminal related to the wireless terminal is set in the transmission power upper limit value table as an upper limit value of the transmission power of the wireless terminal. Power upper limit setting means.

[Invention 7] Furthermore, the communication system of Invention 7 is a communication system that is connected to a plurality of wireless terminals so as to be capable of wireless communication. For each wireless terminal, the maximum value of the wireless terminal is set as a maximum transmission power. Transmission power upper limit value acquisition that connects to a management device that includes a transmission power upper limit value setting unit that sets a value lower than the upper limit value in a communicable manner and acquires the value set by the transmission power upper limit value setting unit from the management device And a wireless terminal control means for controlling the wireless terminal so that the upper limit value of the transmission power of the wireless terminal is the value acquired by the transmission power upper limit value acquisition means for the wireless terminal. Prepare.

[Invention 8] The communication system of Invention 8 is the communication system of Invention 7, wherein the management device obtains a value lower than the maximum upper limit value of the wireless terminal from the wireless terminal. The transmission power upper limit value setting means sets the value acquired by the second transmission power upper limit value acquisition means from the wireless terminal as the upper limit value of the transmission power of the wireless terminal.

[Invention 9] Further, in the communication system of Invention 9, in the communication system of Invention 7, the management device sets a value lower than a maximum upper limit value of the wireless terminal from a wireless terminal related to the wireless terminal. Second transmission power upper limit value acquisition means for acquiring, wherein the transmission power upper limit setting means obtains the value acquired by the second transmission power upper limit value acquisition means from the wireless terminal associated with the wireless terminal. Set as the upper limit of the transmission power of the terminal.

[Invention 10] Furthermore, the communication system of Invention 10 is a communication system that is connected to a plurality of wireless terminals so as to be capable of wireless communication. For each wireless terminal, the maximum transmission power of the wireless terminal is A communication device is communicably connected to a management device that includes a transmission power upper limit value storage unit that stores a transmission power upper value table in which a value lower than the upper limit value is set, and the value set in the transmission power upper value table is transmitted from the management device. The wireless terminal is controlled so that the transmission power upper limit acquisition means to be acquired and the transmission power upper limit value of the wireless terminal are the values acquired by the transmission power upper limit acquisition means for the wireless terminal. Wireless terminal control means.

[Invention 11] Further, the communication system of Invention 11 is the communication system of Invention 10, wherein the management device obtains a value lower than a maximum upper limit value of the wireless terminal from the wireless terminal. The transmission power upper limit value that sets the upper limit value acquisition means and the value acquired by the second transmission power upper limit value acquisition means from the wireless terminal as the upper limit value of the transmission power of the wireless terminal. Setting means is provided.

[Invention 12] Further, in the communication system of Invention 12, in the communication system of Invention 10, the management device sets a value lower than a maximum upper limit value of the wireless terminal from a wireless terminal related to the wireless terminal. The second transmission power upper limit value acquisition means to acquire, and the value acquired by the second transmission power upper limit value acquisition means from the wireless terminal related to the wireless terminal as the upper limit value of the transmission power of the wireless terminal Transmission power upper limit value setting means for setting in the transmission power upper limit value table.

[Invention 13] Further, the communication system of Invention 13 is a communication system that is connected to a plurality of wireless terminals so as to be capable of wireless communication, and a value lower than the maximum upper limit value of the wireless terminal Transmission power upper limit value acquisition means acquired from a wireless terminal related thereto, and upper limit value of transmission power of the wireless terminal is determined from the wireless terminal or a wireless terminal related thereto. Wireless terminal control means for controlling the wireless terminal so as to obtain the value obtained in step (1).

[Invention 14] Furthermore, the communication system of Invention 14 is a communication system that is connected to a plurality of wireless terminals so as to be capable of wireless communication, and for each wireless terminal, an upper limit value of transmission power to the wireless terminal is set. Transmission power upper limit increasing means for increasing the reference upper limit is provided.

[Invention 15] The communication system of Invention 15 further includes reception performance increasing means for increasing reception performance in accordance with the upper limit value of transmission power increased by the transmission power upper limit value increasing means in the communication system of Invention 14. .

[Invention 16] Furthermore, the communication system of Invention 16 is a communication system that is connected to a plurality of wireless terminals so as to be capable of wireless communication, an antenna having a gain higher than a reference gain, and a target wireless terminal. Antenna control means for controlling the antenna such that the upper limit value of the transmission power is higher than the reference upper limit value.

[Invention 17] The communication system of Invention 17 further includes reception performance increasing means for increasing reception performance in accordance with the upper limit value of transmission power increased by the antenna control means in the communication system of Invention 16.

[Invention 18] Further, the communication system of Invention 18 is a communication system connected to a plurality of wireless terminals so as to be capable of wireless communication, wherein the transmission power upper limit value reducing means for reducing the upper limit value of transmission power, and the transmission power Receiving performance reducing means for reducing the receiving performance according to the upper limit value of transmission power reduced by the upper limit value reducing means.

[Invention 19] Further, the communication system of Invention 19 is a communication system that is connected to a plurality of wireless terminals so as to be capable of wireless communication, and is reduced by reception performance reducing means for reducing reception performance and the reception performance reducing means. Transmission power upper limit lowering means for lowering the upper limit of transmission power according to the received performance.

[Invention 20] Furthermore, the communication system of Invention 20 is a communication system connected to a plurality of wireless terminals so as to be capable of wireless communication, wherein the transmission power upper limit value reducing means for reducing the upper limit value of transmission power, and the transmission power Reception status notifying means for notifying the radio terminal of the reception status when the reception performance is reduced or reduced according to the upper limit value of the transmission power reduced by the upper limit value reduction means.

[Invention 21] Further, the communication system of Invention 21 is a communication system that is connected to a plurality of wireless terminals so as to be capable of wireless communication, and the reception status when the reception performance is reduced or reduced is described as the wireless communication system. Receiving status notifying means for notifying the terminal, and transmission power upper limit lowering means for lowering the upper limit of the transmission power in accordance with the reception performance when it is lowered or when it is lowered.

[Invention 22] Further, in the communication system of Invention 22, in the communication system of any one of Inventions 18 and 19, the reception performance reducing means reduces the reception performance of the wireless terminal for each wireless terminal. .

[Invention 23] Further, the communication system of Invention 23 is the communication system of any one of Inventions 18 to 22, wherein the transmission power upper limit lowering means transmits transmission power to the wireless terminal for each wireless terminal. Reduce the upper limit of.

[Invention 24] Further, the communication system of Invention 24 establishes communication with the wireless terminal in wireless transmission / reception stronger than a pre-registered radio wave intensity according to the reception performance in the communication system of any one of Inventions 18 to 23. .

[Invention 25] Furthermore, the communication system of Invention 25 is the communication system of any one of Inventions 15, 17 to 24, wherein the reception performance is reception sensitivity.

[Invention 26] Further, in the communication system of Invention 26, in the communication system of any one of Inventions 15, 17 to 24, the reception performance is a reference value when it is determined that communication is established.

[Invention 27] Further, in the communication system of Invention 27, in the communication system of any one of Inventions 15, 17 to 24, the reception performance is an allowable value of an error rate of received data.

[Invention 28] Further, the communication system of Invention 28 is a communication system for connecting to a plurality of wireless terminals so as to be capable of wireless communication, and a transmission power value acquisition means for acquiring a value of transmission power of the wireless terminals, A communication prohibiting unit that prohibits communication with the wireless terminal when the transmission power value acquired by the transmission power value acquiring unit is greater than or equal to a predetermined value.

[Invention 29] Further, the communication system of Invention 29 is the communication power of Invention 28, in which the transmission power for setting a lower value than the maximum upper limit value of the wireless terminal as the upper limit value of the transmission power for each wireless terminal. An upper limit value setting means, wherein the communication prohibiting means is a value in which the transmission power value acquired by the transmission power value acquisition means for the wireless terminal is set by the transmission power upper limit value setting means for the wireless terminal. If it is above or exceeds this, communication with the wireless terminal is prohibited.

[Invention 30] The communication system of Invention 30 further comprises transmission power upper limit value acquisition means for acquiring a value lower than the maximum upper limit value of the wireless terminal from the wireless terminal in the communication system of Invention 29, The transmission power upper limit setting means sets the value acquired by the transmission power upper limit acquisition means from the wireless terminal as the upper limit value of the transmission power of the wireless terminal.

[Invention 31] Further, the communication system of Invention 31 is the communication system of Invention 29, wherein a transmission power upper limit for obtaining a value lower than the maximum upper limit value of the wireless terminal from a wireless terminal related to the wireless terminal. The transmission power upper limit value setting means includes a value acquired by the transmission power upper limit value acquisition means from a wireless terminal related to the wireless terminal as an upper limit value of the transmission power of the wireless terminal. Set.

[Invention 32] Further, the communication system of Invention 32 is the communication power of Invention 28, in which the transmission power in which the upper limit value of the transmission power is set lower than the maximum upper limit value of each wireless terminal is set. Transmission power upper limit value storage means for storing an upper limit value table, wherein the communication prohibition means is configured such that the transmission power value acquired by the transmission power value acquisition means for the wireless terminal is the transmission power upper limit value for the wireless terminal. If the value is greater than or equal to the value set in the value table, communication with the wireless terminal is prohibited.

[Invention 33] Further, the communication system of Invention 33 is the communication system of Invention 32, wherein a transmission power upper limit value acquisition means for acquiring a value lower than the maximum upper limit value of the wireless terminal from the wireless terminal, A transmission power upper limit value setting unit configured to set, in the transmission power upper limit value table, the value acquired by the transmission power upper limit value acquisition unit from the wireless terminal as the upper limit value of the transmission power of the wireless terminal.

[Invention 34] Further, in the communication system of Invention 34, in the communication system of Invention 32, a transmission power upper limit for obtaining a value lower than a maximum upper limit value of the wireless terminal from a wireless terminal related to the wireless terminal. A value acquisition means and a value acquired by the transmission power upper limit value acquisition means from a wireless terminal related to the wireless terminal is set in the transmission power upper limit value table as an upper limit value of the transmission power of the wireless terminal. Power upper limit setting means.

[Invention 35] Furthermore, in the communication system of Invention 35, the communication power of Invention 35 is a transmission power that sets a lower value than the maximum upper limit value of the wireless terminal as an upper limit value of the transmission power for each wireless terminal. An upper limit value setting unit is communicably connected to a management device, and includes a transmission power upper limit value acquisition unit that acquires a value set by the transmission power upper limit value setting unit from the management device, and the communication prohibition unit includes the communication prohibition unit, If the value of the transmission power acquired by the transmission power value acquisition unit for the wireless terminal is greater than or equal to the value acquired by the transmission power upper limit value acquisition unit for the wireless terminal, the wireless terminal Prohibit communication with the machine.

[Invention 36] Further, the communication system of Invention 36 is the communication system of Invention 35, wherein the management device obtains a value lower than a maximum upper limit value of the wireless terminal from the wireless terminal. The transmission power upper limit value setting means sets the value acquired by the second transmission power upper limit value acquisition means from the wireless terminal as the upper limit value of the transmission power of the wireless terminal.

[Invention 37] Further, in the communication system of Invention 37, in the communication system of Invention 35, the management device sets a value lower than a maximum upper limit value of the wireless terminal from a wireless terminal related to the wireless terminal. Second transmission power upper limit value acquisition means for acquiring, wherein the transmission power upper limit setting means obtains the value acquired by the second transmission power upper limit value acquisition means from the wireless terminal associated with the wireless terminal. Set as the upper limit of the transmission power of the terminal.

[Invention 38] Further, in the communication system of Invention 38, the communication power of Invention 38 is a transmission power in which a value lower than the maximum upper limit value of the wireless terminal is set as the upper limit value of the transmission power for each wireless terminal. A transmission power upper limit value acquisition unit configured to communicate with a management device including a transmission power upper limit value storage unit that stores an upper limit value table, and to acquire a value set in the transmission power upper limit value table from the management device; The communication prohibiting means is when the value of the transmission power acquired by the transmission power value acquisition means for the wireless terminal is greater than or equal to the value acquired by the transmission power upper limit value acquisition means for the wireless terminal. If this happens, communication with the wireless terminal is prohibited.

[Invention 39] Further, the communication system of Invention 39 is the communication system of Invention 38, wherein the management device obtains a value lower than a maximum upper limit value of the wireless terminal from the wireless terminal. The transmission power upper limit value that sets the upper limit value acquisition means and the value acquired by the second transmission power upper limit value acquisition means from the wireless terminal as the upper limit value of the transmission power of the wireless terminal. Setting means is provided.

[Invention 40] Further, the communication system of Invention 40 is the communication system of Invention 38, in which the management device sets a value lower than a maximum upper limit value of the wireless terminal from a wireless terminal related to the wireless terminal. The second transmission power upper limit value acquisition means to acquire, and the value acquired by the second transmission power upper limit value acquisition means from the wireless terminal related to the wireless terminal as the upper limit value of the transmission power of the wireless terminal Transmission power upper limit value setting means for setting in the transmission power upper limit value table.

[Invention 41] Further, in the communication system of Invention 41, the communication system of Invention 41 obtains a value lower than the maximum upper limit value of the wireless terminal from the wireless terminal or a wireless terminal related thereto. A power upper limit value acquisition means, wherein the communication prohibition means is configured such that the transmission power value acquired by the transmission power value acquisition means for the wireless terminal is the transmission power from the wireless terminal or a wireless terminal related thereto. If the value is greater than or equal to the value acquired by the upper limit value acquisition means, communication with the wireless terminal is prohibited.

[Invention 42] On the other hand, in order to achieve the above object, the wireless transceiver according to Invention 42 includes transmission power value acquisition means for acquiring a transmission power value of a communication partner, and transmission power acquired by the transmission power value acquisition means. Communication prohibiting means for prohibiting communication with the other party of communication when the value of is greater than or equal to a predetermined value.

As described above, according to the communication system of the invention 1, 4, 7, 10 or 13, the power consumption can be suppressed by suppressing the upper limit value of the transmission power of the wireless terminal with the intention of the user or the like. . Further, the influence of the radio frequency electromagnetic field on the human body can be weakened.

Furthermore, according to the communication system of the fourteenth or sixteenth aspect, if the transmission power of the communication system increases, the wireless terminal decreases its own transmission power, so that the transmission power of the wireless terminal is intended by the user or the like. Power consumption can be suppressed by suppressing the upper limit value. Further, the influence of the radio frequency electromagnetic field on the human body can be weakened.

Furthermore, according to the communication system of the invention 18 thru | or 21, power consumption can be suppressed by suppressing the upper limit of the transmission power of this communication system with a user's intention. Further, the influence of the radio frequency electromagnetic field on the human body can be weakened.

Furthermore, according to the communication system of the invention 28, the wireless terminal cannot communicate with the communication system when it communicates with a transmission power that exceeds or exceeds a predetermined value. The power consumption can be suppressed by intentionally suppressing the transmission power of the wireless terminal. Further, the influence of the radio frequency electromagnetic field on the human body can be weakened.

On the other hand, according to the wireless transceiver of the invention 42, the communication partner cannot communicate with the wireless transceiver when communicating at a transmission power that exceeds or exceeds a predetermined value. The power consumption can be suppressed by suppressing the transmission power of the communication counterparty with the intention of. Further, the influence of the radio frequency electromagnetic field on the human body can be weakened.

1 is a diagram showing a configuration of a communication system 100. FIG. It is a figure for demonstrating the outline of W-CDMA. It is a figure for demonstrating the outline of W-CDMA. 3 is a diagram illustrating a data structure of communication control information 20. FIG. It is a sequence diagram which shows the download process of the communication control information 20. It is a flowchart which shows an adaptive transmission power control process. It is a figure which shows the basic composition of the wireless base station 3 which concerns on 2nd Embodiment. (A) to (c) are diagrams showing transmission power characteristics, reception sensitivity characteristics, and reception strength characteristics of a conventional wireless terminal, and (d) to (f) reduce only the upper limit value of transmission power. FIG. 6 is a diagram illustrating transmission power characteristics, reception sensitivity characteristics, and reception intensity characteristics of a conventional wireless terminal in a case where (A) to (c) are diagrams showing transmission power characteristics, reception sensitivity characteristics, and reception strength characteristics of a conventional radio terminal, and (d) to (f) are radio base stations according to the present embodiment. 3 is a diagram illustrating a transmission power characteristic, a reception sensitivity characteristic, and a reception intensity characteristic of FIG. It is a flowchart which shows a radio | wireless communication control process.

[First Embodiment]
Next, a first embodiment of the present invention will be described.
First, the configuration of the communication system 100 according to the present embodiment will be described.

FIG. 1 is a diagram illustrating a configuration of the communication system 100.
As shown in FIG. 5, the communication system 100 provides a communication service to a user of a wireless terminal 2 such as a mobile phone, and is a wireless base station (BTS: Base) that is wirelessly connected to the wireless terminal 2. Transceiver Station) 3, a radio network controller (RNC) 4 wirelessly connected to a plurality of radio base stations 3, a subscriber exchange 5 connected to the radio network controller 4, and a relay exchange 6 And an operation center 7 connected to the subscriber exchange 5 via the network.

In the present embodiment, for the sake of simplicity, a single operation center 7 and relay exchange 6 and two subscriber exchanges 5 are shown. However, the present invention is not limited to this configuration. The number of is arbitrary.

The communication system 100 employs a zone method and has a large number of wireless zones arranged in a service area, as in the cellular system (PDC: Personal Digital Cellular telecommunication system) which is a mobile communication system in Japan. Communication control in each radio zone is performed by the radio base station 3. For example, when the wireless terminal 2 belonging to the wireless zone A1 communicates with another communication terminal, the wireless terminal 2 is connected to the subscriber switch 5 via the wireless base station 3 that performs communication control of the wireless zone A1, and the subscriber switch 5 Connected to relay exchange 6. Further, since the wireless terminal 2 is movable, when it moves out of the zone from the wireless zone A1, it belongs to the adjacent wireless zone A2. When the wireless terminal 2 belonging to the wireless zone A2 communicates with another communication terminal, the wireless terminal 2 is connected to the subscriber switch 5 via the wireless base station 3 that performs communication control of the wireless zone A2, and is relayed from the subscriber switch 5 Connected to the exchange 6. Thus, the wireless terminal 2 can communicate with other communication terminals by being connected to the wireless base station 3 that performs communication control of the wireless zone to which the wireless terminal 2 belongs via the wireless line.

In the communication system 100, a logical channel including an information channel and a control channel is prepared in order to control communication and a wireless line. The information channel is for the wireless terminal 2 to transmit and receive audio signals and data signals. When the information channel is assigned to a specific wireless terminal 2, the information channel is occupied by the wireless terminal 2 until communication is completed. The control channel is a channel for transferring a control signal necessary for connection control, and is a downlink only one-way channel for transferring information commonly notified to all the wireless terminals 2 in the wireless zone. Channel (BCCH: Broadcasting Control CHannel), a common control channel for notifying the wireless terminal 2 of an incoming call, or notifying a location registration request, a call request or a data transmission request randomly issued from the wireless terminal 2 It consists of channels such as (CCCH: Common Control CHannel).

The wireless terminal 2 belongs to the wireless zone A1, for example, by making a location registration request to the wireless base station 3 using the common control channel. When the wireless terminal 2 communicates with another communication terminal, the wireless terminal 2 transmits a call signal including the telephone number information of the communication partner to the wireless base station 3 using the common control channel. When the radio base station 3 receives the call signal, the call signal is transmitted to the relay switch 6 via the subscriber switch 5. The relay switch 6 transmits an incoming call signal to the communication partner via the other subscriber switch 5, and sets a line between the communication partner and the wireless terminal 2. The wireless base station 3 assigns an empty channel of information channel in the wireless zone A1 to the wireless terminal 2. Thereby, the wireless terminal 2 can communicate with the communication partner.

For example, W-CDMA (Wideband Code Division Multiple Access) is adopted as a wireless access method.

2 and 3 are diagrams for explaining the outline of W-CDMA.
W-CDMA employs adaptive transmission power control. Adaptive transmission power control is based on signal power to interference power ratio (SIR). As shown in FIG. 2, the SIR is measured after RAKE combining the signal despread at the radio base station 3, and if the measured value is larger than the target value, a command for reducing the transmission power is transmitted to the radio terminal 2. . In the opposite case, a command for increasing the transmission power is transmitted. Receiving this, the wireless terminal 2 controls transmission power according to the command. By realizing this operation at a high speed of once every 0.625 [ms], the fluctuation of the reception level caused by fading can be eliminated by the power control of the radio base station 3, and the transmission power of the radio terminal 2 is also reduced. Can be minimized.

In W-CDMA, as shown in FIG. 3, a plurality of cells are concentrically set in a radio zone covered by one radio base station 3. In the example of FIG. 3, a concentric cell S <b> 1 is set in an area closest to the radio base station 3 in the radio zone A <b> 1 covered by the radio base station 3. A concentric cell S <b> 2 is set in an area next to the radio base station 3. In an area farthest from the radio base station 3, a concentric cell S3 is set. The transmission power of the three wireless terminals 2a1, 2a2, 2a3 belonging to the cell S1 is controlled so that the measured value of SIR of each wireless terminal 2a1, 2a2, 2a3 becomes the target value SIR1. The transmission power of the three wireless terminals 2b1, 2b2, 2b3 belonging to the cell S2 is controlled so that the measured value of SIR of each wireless terminal 2b1, 2b2, 2b3 becomes the target value SIR2. The transmission power of the three wireless terminals 2c1, 2c2, 2c3 belonging to the cell S3 is controlled so that the measured value of SIR of each wireless terminal 2c1, 2c2, 2c3 becomes the target value SIR3. The relationship between the target values is SIR1> SIR2> SIR3.

In the present embodiment, control is performed to lower the upper limit value of the transmission power of the wireless terminal 2, but in W-CDMA, for example, the upper limit value of the transmission power of the wireless terminal 2 belonging to the cell S1 is lowered. When the SIR measurement value when the wireless terminal 2 outputs with the lower limit of the transmission power reaches the target value SIR1, the wireless terminal 2 is controlled as belonging to the cell S1. If the target value SIR2 is not reached but the target value SIR2 is reached, the wireless terminal 2 is controlled as belonging to the cell S2. If the target value SIR2 is not reached but the target value SIR3 is reached, the wireless terminal 2 is controlled as belonging to the cell S3.

The wireless network control device 4 monitors a wireless line between the wireless terminal 2 and the wireless base station 3 and performs wireless control such as allocating a wireless channel with the wireless terminal 2. The wireless network control device 4 is connected to the voice switch 51 and the packet switch 52. The wireless network control device 4 transmits the call signal received from the wireless terminal 2 to the voice switch 51 and transmits the data signal received from the wireless terminal 2 to the packet switch 52.

The subscriber switch 5 includes a voice switch 51 and a packet switch (LS / SGSN: Serving GPRS Support Node) 52.

The voice switch 51 relays the call signal received from the radio network controller 4 to the radio base station 3 to which the destination radio terminal 2 belongs, and also receives the call signal received from the operation center 7 via the relay voice switch 61. Is relayed to the wireless network control device 4.

The packet switch 52 relays the data signal received from the wireless network control device 4 to the wireless base station 3 to which the destination wireless terminal 2 belongs, and receives the data signal received from the operation center 7 via the relay packet switch 62. Is relayed to the wireless network control device 4.

The subscriber exchange 5 is connected to a visitor location register (VLR) 53.

The visitor location register 53 is a database that stores location registration information of the wireless terminal 2 for managing the wireless terminal 2 in the area where the subscriber exchange 5 has jurisdiction. The visitor location register 53 may be provided outside or inside the subscriber exchange 5 as long as the subscriber exchange 5 is accessible.

For example, when receiving a location registration request from the wireless terminal 2, the subscriber exchange 5 downloads location registration information of the wireless terminal 2 from a home location register (HLR) 71 and visitor location register 53. The location registration processing is performed based on the location registration information.

The relay exchange 6 is connected to a subscriber exchange 5, a gateway exchange 9, and a gateway (GW) 10. The gateway exchange 9 is connected to another gateway exchange 13 via a POI (Point Of Interface) 12, and the gateway 10 is connected to the Internet.

The relay switch 6 includes a relay voice switch 61 and a relay packet switch (GS / GGSN: Gateway GPRS Support Node) 62.

The relay voice switch 61 relays the call signal received from the voice switch 51 to the operation center 7 and relays the call signal received from the operation center 7 to the voice switch 51.

The relay packet switch 62 relays the data signal received from the packet switch 52 to the operation center 7 and relays the data signal received from the operation center 7 to the packet switch 52.

The operation center 7 has a server function for providing communication services, a use restriction service for restricting the use of communication, and various services contracted by each wireless terminal 2 to all the wireless terminals 2.

The operation center 7 is connected to the home location register 71.
The home location register 71 includes user information (telephone number, IP address, authentication information, etc.), contract service information, location registration information (location registration area) of all wireless terminals 2 in the area where the operation center 7 has jurisdiction. In addition to storing information necessary for setting the communication path of the location registration area and the wireless terminal 2, the database stores communication control information of the wireless terminal 2. The home location register 71 can be provided outside or inside the operation center 7 as long as the operation center 7 is accessible.

Next, the data structure of communication control information will be described.
FIG. 4 is a diagram illustrating a data structure of the communication control information 20.

As shown in FIG. 4, the home location register 71 stores communication control information 20 of all the wireless terminals 2 in the area where the operation center 7 has jurisdiction. In the communication control information 20, one record is registered for each wireless terminal 2. Each record includes a field in which the telephone number of the wireless terminal 2 is registered, a field in which the IP address of the wireless terminal 2 is registered, and a field in which the upper limit value of the transmission power of the wireless terminal 2 is registered. As the upper limit value of the transmission power of the wireless terminal 2, a value (for example, 0.1 [W]) lower than the maximum transmission power (for example, 1 [W]) of the wireless terminal 2 can be set. Here, the maximum transmission power is a maximum value of transmission power that can be realized by the wireless terminal 2 in terms of performance, or a maximum transmission power based on a standard required when communication quality with a wireless base station is minimum. Say.

The upper limit value of transmission power is set by the setting process (transmission power upper limit setting means) of the operation center 7. The upper limit value of the transmission power is set by, for example, a manufacturer, a seller, or a telecommunications carrier when the wireless terminal 2 is shipped, or set by a parent when a parent who is a guardian gives the wireless terminal 2 to a child. Or the user may set. The operation center 7 receives a request from these persons and sets an upper limit value of transmission power of the target wireless terminal 2.

Next, the download process of the communication control information 20 will be described.
FIG. 5 is a sequence diagram showing a download process of the communication control information 20.

The download process of the communication control information 20 is a process executed when the subscriber exchange 5 receives a location registration request from the wireless terminal 2. In FIG. 5, the wireless network control device 4 and the relay exchange 6 are omitted for the sake of simplicity.

As shown in FIG. 5, when the subscriber exchange 5 receives a location registration request from the wireless terminal 2 via the wireless base station 3 and the wireless network control device 4 (step S100), the subscriber exchange 5 makes a request with the operation center 7. Authentication processing of the original wireless terminal 2 is performed (step S102). When the authentication process is completed, the subscriber exchange 5 transmits a location registration request to the operation center 7 (step S104).

The operation center 7 reads the communication control information 20 corresponding to the wireless terminal 2 stored in the home location register 71 based on the telephone number of the requesting wireless terminal 2 (step S106), and the read communication The control information 20 is transmitted to the requesting wireless base station 3 (step S108).

The radio base station 3 stores the received communication control information 20 in a database or the like (step S110).

The operation center 7 transmits the read communication control information 20 to the requesting subscriber exchange 5 together with the location registration information (step S112).

The subscriber exchange 5 stores the communication control information 20 together with the received location registration information in the visitor location register 53 (step S114), and the requesting wireless terminal 2 via the wireless base station device 3 and the wireless network control device 4 A location registration response is transmitted to (step S116).

Next, adaptive transmission power control processing executed by the radio base station 3 will be described.
FIG. 6 is a flowchart showing the adaptive transmission power control process.

The adaptive transmission power control process is a process for performing W-CDMA adaptive transmission power control in the wireless access control. When the wireless base station 3 executes the adaptive transmission power control process, as shown in FIG. To do.

In step S200, the upper limit value Pmax of the transmission power set for the wireless terminal 2 that is the target of wireless access control (hereinafter referred to as the target wireless terminal 2 in the description of FIG. 6) is stored in a database or the like. The communication control information 20 corresponding to the target wireless terminal 2 is read out, and the process proceeds to step S202.

In step S202, the SIR of the target wireless terminal 2 is measured, the process proceeds to step S204, and the target value Ptr of the transmission power of the target wireless terminal 2 is determined so that the measured value of the SIR becomes the target value. The process proceeds to step S206.

In step S206, it is determined whether or not the target value Ptr of the transmission power is larger than the current value Pcr of the transmission power of the target wireless terminal 2, and when it is determined that the target value Ptr is larger than the current value Pcr (YES). Proceeds to step S208.

In step S208, it is determined whether or not the target value Ptr of the transmission power is larger than the upper limit value Pmax of the transmission power. If it is determined that the target value Ptr is equal to or lower than the upper limit value Pmax (NO), the process proceeds to step S210. To do.

In step S210, a transmission power increase command for increasing the transmission power to the target value Ptr is transmitted to the target wireless terminal 2, and the process proceeds to step S212, where the target value Ptr of the transmission power is set as the current value Pcr of the transmission power. The process proceeds to step S214.

In step S214, it is determined whether or not the target value Ptr of the transmission power is smaller than the current value Pcr of the transmission power. If it is determined that the target value Ptr is smaller than the current value Pcr (YES), the process proceeds to step S216. To do.

In step S216, a transmission power reduction command for reducing the transmission power to the target value Ptr is transmitted to the target wireless terminal 2, and the process proceeds to step S218 to set the transmission power target value Ptr as the current value of transmission power Pcr. Then, the series of processes is terminated and the original process is restored.

On the other hand, when it is determined in step S214 that the target value Ptr of the transmission power is equal to or greater than the current value Pcr of the transmission power (NO), the series of processes is terminated and the original process is returned.

On the other hand, when it is determined in step S208 that the target value Ptr of transmission power is larger than the upper limit value Pmax of transmission power (YES), the process proceeds to step S214. In this case, a process of moving the target wireless terminal 2 to the next furthest cell from the current cell is performed, or if the current cell is the farthest cell, the target wireless terminal 2 is connected to another wireless base station 3. Process to move.

On the other hand, when it is determined in step S206 that the target value Ptr of the transmission power is equal to or less than the current value Pcr of the transmission power (NO), the process proceeds to step S214.

Next, the operation of the present embodiment will be described.
When the user or the like wants to reduce the upper limit value of the transmission power of the wireless terminal 2, the user or the like accesses the operation center 7 in the wireless terminal 2 or other communication terminal and uses the wireless terminal as the upper limit value of the transmission power. A value lower than the maximum transmission power of 2 is set.

When the operation center 7 receives a request from a user or the like, the upper limit value of the transmission power of the target wireless terminal 2 is set in the communication control information 20 by setting processing.

When the upper limit value of the transmission power is set, in the radio base station 3, the upper limit value of the transmission power of the radio terminal 2 is set to the value set in the communication control information 20 for the radio terminal 2. The transmission power of the wireless terminal 2 is controlled.

In this way, in this embodiment, the operation center 7 sets a value lower than the maximum transmission power of the wireless terminal 2 in the communication control information 20 as the upper limit value of the transmission power for each wireless terminal 2. The radio base station 3 controls the transmission power of the radio terminal 2 so that the upper limit value of the transmission power of the radio terminal 2 becomes the value set in the communication control information 20 for the radio terminal 2. .

Thus, power consumption can be suppressed by suppressing the upper limit value of the transmission power of the wireless terminal 2 with the intention of the user or the like. Further, the influence of the radio frequency electromagnetic field on the human body can be weakened.

In the present embodiment, the setting process of the operation center 7 corresponds to the transmission power upper limit setting means of the invention 1, steps S200 to S212 correspond to the wireless terminal control means of the invention 1, and the maximum transmission power is This corresponds to the maximum upper limit value of the first aspect.

[Modification of First Embodiment]
In addition, about the said 1st Embodiment, the following structure is also employable.

The first configuration includes transmission power upper limit value acquisition means for acquiring a value lower than the maximum transmission power of the wireless terminal 2 from the wireless terminal 2 in the configuration of the first embodiment, The upper limit value setting means sets the value acquired from the wireless terminal 2 by the transmission power upper limit value acquisition means as the upper limit value of the transmission power of the wireless terminal 2. That is, when the user wants to lower the upper limit value of the transmission power of his / her wireless terminal 2, the upper limit value of the transmission power is set in the own wireless terminal 2. Here, the transmission power upper limit value acquisition means can be provided in the radio base station 3, the radio network control device 4, the subscriber exchange 5, the relay exchange 6 or the operation center 7.

The second configuration is a transmission power upper limit value obtained from the wireless terminal 2 related to the wireless terminal 2 with a value lower than the maximum transmission power of the wireless terminal 2 in the configuration of the first embodiment. The transmission power upper limit setting unit includes an acquisition unit, and sets the value acquired by the transmission power upper limit acquisition unit from the radio terminal 2 related to the radio terminal 2 as the upper limit value of the transmission power of the radio terminal 2 To do. For example, when the parent wants to lower the upper limit value of the transmission power of the child radio terminal 2, the upper limit value of the transmission power is set in the parent radio terminal 2. Here, the wireless terminal 2 related to the wireless terminal 2 includes, for example, a wireless terminal 2 that is a communication partner or a wireless terminal 2 that is owned by family members, friends, employees, and other related parties. The transmission power upper limit acquisition means can be provided in the radio base station 3, the radio network control device 4, the subscriber exchange 5, the relay exchange 6 or the operation center 7.

In the third configuration, instead of the configuration of the first embodiment, transmission power in which a value lower than the maximum transmission power of the wireless terminal 2 is set as the upper limit value of the transmission power for each wireless terminal 2 Transmission power upper limit value storage means for storing the upper limit value table, and the wireless terminal 2 so that the upper limit value of the transmission power of the wireless terminal 2 becomes the value set in the transmission power upper limit value table for the wireless terminal 2 Wireless terminal control means for controlling the machine 2. Here, the setting process (transmission power upper limit setting means) in the first embodiment may not be provided. The transmission power upper limit value storage means can be provided in the radio base station 3, the radio network controller 4, the subscriber exchange 5, the relay exchange 6 or the operation center 7. The same applies to the location where the wireless terminal control means is provided.

Even if it is such a structure, the effect similar to the said 1st Embodiment is acquired.
A fourth configuration includes a transmission power upper limit value acquisition means for acquiring a value lower than the maximum transmission power of the wireless terminal 2 from the wireless terminal 2 in the third configuration, and a transmission power from the wireless terminal 2 Transmission power upper limit value setting means for setting the value acquired by the upper limit value acquisition means in the transmission power upper limit value table as the upper limit value of the transmission power of the wireless terminal 2. That is, when the user wants to lower the upper limit value of the transmission power of his / her wireless terminal 2, the upper limit value of the transmission power is set in the own wireless terminal 2. Here, the transmission power upper limit value acquisition means can be provided in the radio base station 3, the radio network control device 4, the subscriber exchange 5, the relay exchange 6 or the operation center 7. The same applies to places where transmission power upper limit setting means is provided.

A fifth configuration is a transmission power upper limit value acquisition unit that acquires a value lower than the maximum transmission power of the wireless terminal 2 from the wireless terminal 2 related to the wireless terminal 2 in the third configuration, Transmission power upper limit value setting means for setting the value acquired by the transmission power upper limit value acquisition means from the wireless terminal 2 related to the wireless terminal 2 in the transmission power upper limit value table as the upper limit value of the transmission power of the wireless terminal 2 With. For example, when the parent wants to lower the upper limit value of the transmission power of the child radio terminal 2, the upper limit value of the transmission power is set in the parent radio terminal 2. Here, the wireless terminal 2 related to the wireless terminal 2 is the same as described above. The transmission power upper limit acquisition means can be provided in the radio base station 3, the radio network control device 4, the subscriber exchange 5, the relay exchange 6 or the operation center 7. The same applies to places where transmission power upper limit setting means is provided.

In the sixth configuration, instead of the configuration of the first embodiment, transmission power for setting a lower value than the maximum transmission power of the wireless terminal 2 as the upper limit value of the transmission power for each wireless terminal 2 A transmission power upper limit value acquisition unit that is communicably connected to a management device that includes an upper limit value setting unit and acquires a value set by the transmission power upper limit value setting unit from the management device; Is provided with wireless terminal control means for controlling the wireless terminal 2 so that the wireless terminal 2 has the value acquired by the transmission power upper limit value acquiring means. That is, the transmission power upper limit setting means is provided separately as a management device. Here, the management device may be a separate entity from the transmission power upper limit value acquisition means and the wireless terminal control means, and the wireless base station 3, the wireless network control device 4, the subscriber exchange 5, the relay exchange 6 or the operation center. 7 can also be configured. Further, the transmission power upper limit value acquisition means can be provided in the radio base station 3, the radio network control device 4, the subscriber exchange 5, the relay exchange 6 or the operation center 7 if it is separate from the management apparatus. The same applies to the location where the wireless terminal control means is provided.

Even if it is such a structure, the effect similar to the said 1st Embodiment is acquired.
According to a seventh configuration, in the sixth configuration, the management device includes a second transmission power upper limit value acquisition unit that acquires a value lower than the maximum transmission power of the wireless terminal 2 from the wireless terminal 2, The transmission power upper limit value setting unit sets the value acquired from the wireless terminal 2 by the second transmission power upper limit value acquisition unit as the upper limit value of the transmission power of the wireless terminal 2. That is, when the user wants to lower the upper limit value of the transmission power of his / her wireless terminal 2, the upper limit value of the transmission power is set in the own wireless terminal 2. Here, the second transmission power upper limit value acquisition means can be provided in the radio base station 3, the radio network controller 4, the subscriber exchange 5, the relay exchange 6 or the operation center 7.

According to an eighth configuration, in the sixth configuration, the management apparatus obtains a value lower than the maximum transmission power of the wireless terminal 2 from the wireless terminal 2 related to the wireless terminal 2. The transmission power upper limit setting unit includes an upper limit value acquisition unit, and the transmission power upper limit setting unit obtains the value acquired by the second transmission power upper limit acquisition unit from the wireless terminal 2 related to the wireless terminal 2 by the transmission power of the wireless terminal 2. Set as the upper limit. For example, when the parent wants to lower the upper limit value of the transmission power of the child radio terminal 2, the upper limit value of the transmission power is set in the parent radio terminal 2. Here, the wireless terminal 2 related to the wireless terminal 2 is the same as described above. Further, the second transmission power upper limit value acquisition means can be provided in the radio base station 3, the radio network control device 4, the subscriber exchange 5, the relay exchange 6 or the operation center 7.

In the ninth configuration, instead of the configuration of the first embodiment, transmission power in which a value lower than the maximum transmission power of the wireless terminal 2 is set as the upper limit value of the transmission power for each wireless terminal 2 A transmission power upper limit value acquisition unit that is communicably connected to a management device including a transmission power upper limit value storage unit that stores an upper limit value table, and that acquires a value set in the transmission power upper limit value table from the management device, and a wireless terminal Wireless terminal control means for controlling the wireless terminal 2 so that the upper limit value of the transmission power of 2 is the value acquired by the transmission power upper limit value acquisition means for the wireless terminal 2. That is, the transmission power upper limit storage means is provided separately as a management device. Here, the management device only needs to be separate from the transmission power upper limit value storage means and the wireless terminal control means, and the wireless base station 3, the wireless network control device 4, the subscriber exchange 5, the relay exchange 6 or the operation center. 7 can also be configured. Further, the setting process (transmission power upper limit setting means) in the first embodiment may not be provided. Further, the transmission power upper limit storage means can be provided in the radio base station 3, the radio network controller 4, the subscriber exchange 5, the relay exchange 6 or the operation center 7 if it is separate from the management apparatus. The same applies to the location where the wireless terminal control means is provided.

Even if it is such a structure, the effect similar to the said 1st Embodiment is acquired.
According to a tenth configuration, in the ninth configuration, the management device includes a second transmission power upper limit value acquisition unit configured to acquire a value lower than the maximum transmission power of the wireless terminal 2 from the wireless terminal 2; A transmission power upper limit value setting unit is provided that sets the value acquired from the terminal 2 by the second transmission power upper limit value acquisition unit as the upper limit value of the transmission power of the wireless terminal 2 in the transmission power upper limit value table. That is, when the user wants to lower the upper limit value of the transmission power of his / her wireless terminal 2, the upper limit value of the transmission power is set in the own wireless terminal 2. Here, the second transmission power upper limit value acquisition means can be provided in the radio base station 3, the radio network controller 4, the subscriber exchange 5, the relay exchange 6 or the operation center 7. The same applies to places where transmission power upper limit setting means is provided.

According to an eleventh configuration, in the ninth configuration, the management device acquires a value lower than the maximum transmission power of the wireless terminal 2 from the wireless terminal 2 related to the wireless terminal 2. The value acquired by the second transmission power upper limit acquisition unit from the upper limit value acquisition unit and the wireless terminal 2 related to the wireless terminal 2 is stored in the transmission power upper limit value table as the upper limit value of the transmission power of the wireless terminal 2. Transmission power upper limit setting means for setting. For example, when the parent wants to lower the upper limit value of the transmission power of the child radio terminal 2, the upper limit value of the transmission power is set in the parent radio terminal 2. Here, the wireless terminal 2 related to the wireless terminal 2 is the same as described above. Further, the second transmission power upper limit value acquisition means can be provided in the radio base station 3, the radio network control device 4, the subscriber exchange 5, the relay exchange 6 or the operation center 7. The same applies to places where transmission power upper limit setting means is provided.

In the twelfth configuration, instead of the configuration of the first embodiment, a value lower than the maximum transmission power of the wireless terminal 2 is acquired from the wireless terminal 2 or the wireless terminal 2 related thereto. The transmission power upper limit acquisition means and the upper limit value of the transmission power of the wireless terminal 2 are the values acquired by the transmission power upper limit acquisition means from the wireless terminal 2 or the wireless terminal 2 related thereto, Wireless terminal control means for controlling the wireless terminal 2. Here, the setting process (transmission power upper limit setting means) in the first embodiment may not be provided. The transmission power upper limit acquisition means can be provided in the radio base station 3, the radio network control device 4, the subscriber exchange 5, the relay exchange 6 or the operation center 7. The same applies to the location where the wireless terminal control means is provided.

Even if it is such a structure, the effect similar to the said 1st Embodiment is acquired.
[Second Embodiment]
Next, a second embodiment of the present invention will be described.

Hereinafter, the relationship between the mobile communication system and the present embodiment will be described.
The configuration of a mobile communication system for connecting a mobile phone or a mobile PC with a built-in communication device includes at least a wireless terminal 2, a wireless base station 3, a public communication network, and a "terminal on the other side in information transmission" Called a communication partner terminal).

In a mobile communication system, when communication is established from a wireless terminal 2 to a communication partner terminal, the wireless terminal 2 is connected to the communication partner terminal through the wireless base station 3 through the public communication network. It becomes.

In the present embodiment, the states indicated by the expressions “normal” and “lower than normal” are defined below for transmission power and reception sensitivity.

The transmission power of the wireless terminal 2 in the mobile communication system cannot be changed to a desired value intentionally by the user or the like, and the intensity of the radio wave received from the wireless base station 3 is measured, and based on the result. Thus, the wireless base station 3 and the wireless terminal 2 have determined the transmission power of the wireless terminal 2.

In this embodiment, transmission power that has not been changed by the user or the like is referred to as “normal transmission power”, whereas transmission power that is intentionally changed by the user or the like is referred to as “transmission power lower than normal”. Yes.

First, the configuration of radio base station 3 according to the present embodiment will be described.
FIG. 7 is a diagram illustrating a basic configuration of the radio base station 3 according to the second embodiment.

The radio base station 3 includes an “antenna” 111, a “reception unit” 410, a “transmission unit” 470, a “control signal generation unit” 450, and an “operation unit” 114.

The “receiver” 410 includes at least a “band limiter” 121, a “sensitivity controller” 122, an “automatic gain control amplifier” 123, a “channel selector” 126, and a “demodulator” 128.

The “reception signal” 331 received by the “antenna” 111 is input to the “reception unit” 410. A “demodulation signal” 332 is output from the “reception unit” 410. The “demodulated signal” 332 includes “information transmitted by the base station”.

The “sensitivity controller” 122 can change the reception sensitivity by the “correction control signal” 352 from the “control signal generator” 450.

The “transmitter” 470 includes at least a “carrier generator” 171, a “modulator” 172, and a “transmission power controller” 173.

“The modulation signal” 374 including “information to be transmitted to the other party” is input to the “transmission unit” 470. “Transmission unit” 470 generates “transmission signal” 375 and outputs it to “antenna” 111.

The “transmission power controller” 173 can vary the transmission power by the “correction control signal” 352 from the “control signal generator” 450.

The “operation means” 114 generates an “operation signal” 315 based on an operation performed by the user or the like, and outputs it to the “control signal generation unit” 450.

The “operation signal” 315 from the “operation means” 114 is input to the “control signal generator” 450. “Control signal generator” 450 outputs “correction control signal” 352 determined based on the state of “operation signal” 315. The “control signal generator” 450 outputs the generated “correction control signal” 352 to the “transmitter” 470 and the “receiver” 410 in common.

That is, the “transmission unit” 470 and the “reception unit” 410 are controlled by the operation of the “operation means” 114.

Next, the operation of the present embodiment will be described.
First, an operation when the transmission power of the radio base station 3 is “normal transmission power” will be described.

When the transmission power of the radio base station 3 is “normal transmission power”, the “control signal generation unit” 450 sets the “correction control signal” to a value that maintains “normal transmission power” and “normal reception sensitivity”. 352 is generated and output to the “transmission unit” 470 and the “reception unit” 410.

Since the “transmission power controller” 173 that is a component of the “transmission unit” 470 is input with the “correction control signal” 352 that maintains the “normal transmission power”, the “transmission unit” 470 The “transmission signal” 375 is output by “normal transmission power”.

In addition, since the “sensitivity controller” 122 that is a component of the “reception unit” 410 is input with the “correction control signal” 352 that maintains the “normal reception sensitivity”, the “reception unit” 410 Generates “demodulated signal” 332 according to “normal reception sensitivity”.

Next, a problem when the transmission power of the radio base station 3 is lowered will be described.
The radio base station 3 determines the transmission power according to the intensity of the radio wave received from the radio terminal 2.

If the radio wave received from the wireless terminal 2 is strong, the wireless base station 3 reduces the transmission power. On the contrary, if the radio wave received from the wireless terminal 2 is weak, the wireless base station 3 increases the transmission power.

Usually, the radio base station 3 transmits with the minimum necessary transmission power.
For example, when the radio base station 3 can receive radio waves from the radio terminal 2, if the transmission power of the radio base station 3 is simply reduced, the radio base station 3 does not reach the radio terminal 2 and cannot communicate. Further, the “communication symmetry” between the transmission power and the reception sensitivity of the wireless base station 3 as viewed from the wireless terminal 2 is broken. For this reason, the wireless terminal 2 cannot operate normally with respect to the wireless base station 3.

Such problems and methods for solving them will be described more specifically in comparison with the conventional case.

8A to 8C are diagrams showing transmission power characteristics, reception sensitivity characteristics, and reception strength characteristics of a conventional wireless terminal, and FIGS. 8D to 8F are upper limit values of transmission power. FIG. 6 is a diagram illustrating a transmission power characteristic, a reception sensitivity characteristic, and a reception intensity characteristic of a conventional wireless terminal when only the frequency is reduced.

FIGS. 9A to 9C are diagrams showing transmission power characteristics, reception sensitivity characteristics, and reception strength characteristics of a conventional wireless terminal, and FIGS. 9D to 9F are shown in this embodiment. It is a figure which shows the transmission power characteristic of this radio base station 3, a reception sensitivity characteristic, and a reception intensity characteristic.

8 (a), 8 (d), 9 (a), and 9 (d), the vertical axis 800 represents transmission power, and the vertical axis 800 in FIGS. 8 (b), (e), 9 (b), and (e). An axis 801 represents reception sensitivity, and a vertical axis 802 in FIGS. 8C and 8F and FIGS. 8C and 8F represents reception intensity. 8 and 9, the horizontal axis 803 represents a propagation loss (≈distance) between the conventional wireless terminal and the wireless base station (or between the wireless terminal 2 and the wireless base station 3). Is shown.

In the conventional radio terminal, as shown in FIG. 8A, the transmission power increases as the propagation loss with the radio base station increases (that is, as the radio wave received from the radio base station becomes weaker). Thus, the transmission power is controlled. When the transmission power reaches the maximum transmission power 804 that can be exhibited by the wireless terminal, the maximum transmission power 804 remains constant, and a signal is transmitted to the radio base station at a point where the propagation loss is slightly higher than the point at which the maximum transmission power 804 is reached. Can no longer communicate. On the other hand, as shown in FIG. 8B, the reception sensitivity is set to the maximum reception sensitivity 805 that can be exhibited by the wireless terminal regardless of the propagation loss, so the reception intensity is shown in FIG. 8C. Thus, as the propagation loss increases, the maximum reception strength 815 decreases, and when the propagation loss decreases to an allowable value 806, it becomes impossible to receive a signal from the radio base station.

In such a state, the range 807 in which the wireless terminal can transmit a signal to the wireless base station and the range 808 in which the wireless terminal can receive a signal from the wireless base station are the same. Is maintained. This is because the system is designed so that “communication symmetry” is maintained in consideration of the characteristics of the antenna and the noise figure of the receiver. Therefore, when the propagation loss exceeds the ranges 807 and 808 and increases to the ranges 809 and 810, the wireless terminal cannot display communication with the wireless base station, so “out of range” is displayed.

On the other hand, when only the upper limit value of the transmission power is reduced to the constant value 811, the transmission power becomes constant at the constant value 811 when reaching the constant value 811 as shown in FIG. The signal cannot be transmitted to the radio base station at a point slightly higher than the point at which the value reaches a certain value 811. Therefore, the range 812 in which the radio terminal can transmit a signal to the radio base station is smaller than when the upper limit value of the transmission power is not lowered. On the other hand, the reception sensitivity is set to the maximum reception sensitivity 805 regardless of the propagation loss as shown in FIG. 8 (e). Therefore, the reception intensity is high in the propagation loss as shown in FIG. 8 (f). As it decreases, the maximum reception strength 815 decreases, and when it decreases to an allowable value 806, a signal from the radio base station cannot be received. Accordingly, the range 808 in which the wireless terminal can receive a signal from the wireless base station is the same as when the upper limit value of the transmission power is not reduced.

In such a state, the range 812 in which the wireless terminal can transmit signals to the wireless base station does not match the range 808 in which the wireless terminal can receive signals from the wireless base station. Collapses. That is, when the propagation loss exceeds the range 812 but does not exceed the range 808, a one-way communication state in which a signal cannot be transmitted to the radio base station but a signal can be received from the radio base station Therefore, the wireless terminal is in a state where it cannot make a call to the wireless base station even though “out of service area” is not displayed. This not only confuses the user, but also prevents the radio base station and the base station network from operating normally with respect to the radio terminal as described above.

Such a problem is similarly assumed for the radio base station.
Therefore, in the radio base station 3 according to the present embodiment, as shown in FIG. 9D, when the upper limit value of the transmission power is reduced to the constant value 811 by operating the “operation means” 114, As shown in e), the reception sensitivity is lowered to a constant value 813 in accordance with the reduced upper limit value 811 of the transmission power. For example, when the upper limit value of the transmission power is reduced from the maximum transmission power 804 (for example, 1 [W]) to a constant value 811 (for example, 0.1 [W]), the reception sensitivity is increased to the maximum reception sensitivity 805 (for example, 0 [dB]) to a certain value 813 (for example, a value reduced by 10 [dB]). If the reception sensitivity decreases, the reception intensity also becomes a predetermined value (corresponding to a difference between the maximum reception sensitivity 805 and the constant value 813) as the propagation loss increases as the propagation loss increases, as shown in FIG. 9 (f). If the value decreases from the lowered fixed value 816 and falls to the allowable value 806, the signal from the wireless terminal 2 cannot be received. Accordingly, since the range of the reception intensity is reduced, the range 814 in which the radio base station 3 can receive a signal from the radio terminal 2 is smaller than when the reception sensitivity is not lowered.

As a result, the range 812 in which the radio base station 3 can transmit signals to the radio terminal 2 and the range 814 in which the radio base station 3 can receive signals from the radio terminal 2 match, so that “communication symmetry” is Kept.

The reception sensitivity may be lowered according to the upper limit value of the transmission power. In this case, the range (reception range) in which the radio base station 3 can receive signals from the radio terminal 2 is It is preferable to reduce the frequency so as to coincide with a range (transmission range) in which signals can be transmitted to the wireless terminal 2. However, the reception range and the transmission range do not necessarily need to be the same, and if the mismatch between the reception range and the transmission range can be reduced as compared with the case where the reception sensitivity is not lowered at all, the “symmetry of communication” is lost. Since the degree can be reduced, when the upper limit value of the transmission power is reduced, it is only necessary to reduce the reception sensitivity so that the reception range matches the transmission range or the mismatched portion becomes small. it can.

Next, a variable attenuator is used as the “sensitivity controller” 122 for the operation when the transmission power of the radio base station 3 is changed to “transmission power lower than normal” and the operation for preventing the above-mentioned problems. This will be explained with an example.

Here, as a normal operation, the user or the like manually changes the transmission power increasing or decreasing within a predetermined range to 1/10.

When the user or the like operates “operation means” 114, “correction control signal” 352 is input from “control signal generator” 450 to “sensitivity controller” 122 (variable attenuator) and “transmission power controller” 173. Is done.

Here, the “correction control signal” 352 has a value of 1/10.
The “transmission power controller” 173 sets the transmission power to 1/10 of the original maximum transmission power.

“Sensitivity controller” 122 (variable attenuator) sets the attenuation rate to 1/10.
Therefore, the radio base station 3 can switch the transmission power to “transmission power lower than normal” or return to “normal transmission power” by the operation of the user or the like. In conjunction with this, the reception sensitivity is switched to “reception sensitivity lower than normal” or returned to “normal reception sensitivity”.

Hereinafter, a method for reducing the reception sensitivity of the “reception unit” 410 will be described.
The “sensitivity controller” 122 that is a component of the “receiving unit” 410 can be implemented by a variable attenuator and a variable amplifier.

In addition to using these, in order to reduce the receiving sensitivity of the “receiving unit” 410, it is possible to narrow the gain variable range of the “automatic gain control amplifier” 123.

Thus, in the present embodiment, the radio base station 3 decreases the upper limit value of the transmission power by operating the “operation means” 114, and decreases the reception sensitivity according to the lower limit value of the transmission power.

Thereby, power consumption can be suppressed by suppressing the upper limit value of the transmission power of the radio base station 3 with the intention of the user or the like. Further, the influence of the radio frequency electromagnetic field on the human body can be weakened. Furthermore, the degree of “communication symmetry” breaking can be reduced.

[Modification of Second Embodiment]
In addition, about the said 2nd Embodiment, the following structure is also employable.

In the first configuration, instead of the configuration of the second embodiment, the reception performance reducing means for reducing the reception performance, and the upper limit value of the transmission power is reduced according to the reception performance reduced by the reception performance reducing means. And a transmission power upper limit lowering means.

Even if it is such a structure, the effect similar to the said 2nd Embodiment is acquired.
In the second configuration, instead of the configuration of the second embodiment, transmission power upper limit value reducing means for reducing the upper limit value of transmission power, and upper limit value of transmission power reduced by the transmission power upper limit value reducing means And a reception status notifying means for notifying the wireless terminal 2 of the reception status when the reception performance is reduced or when it is assumed to be reduced.

Even if it is such a structure, the effect similar to the said 2nd Embodiment is acquired.
In the third configuration, instead of the configuration of the second embodiment, the reception status notifying means for notifying the wireless terminal 2 of the reception status when the reception performance is reduced or when the reception performance is reduced, and the decrease Transmission power upper limit lowering means for lowering the upper limit of the transmission power according to the reception performance when it is reduced or reduced.

Even if it is such a structure, the effect similar to the said 2nd Embodiment is acquired.
In the second configuration and the third configuration, when the radio base station 3 actually lowers the reception performance, the notification content is the reception status when the reception performance is reduced according to the upper limit value of the reduced transmission power. When the wireless base station 3 does not decrease the reception performance but appears to be deteriorated for the wireless terminal 2, the notification content is a case where the reception performance is decreased according to the upper limit value of the decreased transmission power. Receive status. The reception status is, for example, “Current reception strength is ** [dB]” in analog communication, and “Current error rate is **” in digital communication. It becomes. However, it is sufficient to include only the information “**” in the transmission signal.

In the fourth configuration, in the configuration of the second embodiment or the first configuration, the reception performance lowering unit decreases the reception performance of the radio terminal 2 for each radio terminal 2. However, the reception performance for specific or all wireless terminals 2 may be reduced.

The fifth configuration is the radio terminal 2 in the configuration of the second embodiment, or the first configuration, the second configuration, the third configuration, or the fourth configuration. Every time, the upper limit value of the transmission power to the wireless terminal 2 is reduced. But you may reduce the upper limit of the transmission power to the specific or all the radio | wireless terminals 2. FIG.

The sixth configuration is registered in advance according to the reception performance in the configuration of the second embodiment, or the first configuration, the second configuration, the third configuration, the fourth configuration, or the fifth configuration. Communication with the wireless terminal 2 in wireless transmission / reception stronger than the radio field intensity is established.

The seventh configuration is the reception performance in the configuration of the second embodiment, or the first configuration, the second configuration, the third configuration, the fourth configuration, the fifth configuration, or the sixth configuration. Is the reception sensitivity.

The eighth configuration is the reception performance in the configuration of the second embodiment, or the first configuration, the second configuration, the third configuration, the fourth configuration, the fifth configuration, or the sixth configuration. Is a reference value for determining that communication is established.

The ninth configuration is the reception performance in the configuration of the second embodiment, or the first configuration, the second configuration, the third configuration, the fourth configuration, the fifth configuration, or the sixth configuration. Is an allowable value of the error rate of received data.

In the tenth configuration, instead of the configuration of the second embodiment, for each wireless terminal 2, a transmission power upper limit value that increases the upper limit value of transmission power to the wireless terminal 2 from the reference upper limit value. An increase means is provided. If the transmission power of the wireless base station 3 increases, the wireless terminal 2 decreases its own transmission power. Therefore, the power consumption can be reduced by suppressing the upper limit value of the transmission power of the wireless terminal 2 with the intention of the user or the like. Can be suppressed. Further, the influence of the radio frequency electromagnetic field on the human body can be weakened.

The eleventh configuration includes reception performance increasing means for increasing the reception performance in accordance with the upper limit value of the transmission power increased by the transmission power upper limit value increasing means in the tenth configuration. For the reception performance, the seventh configuration, the eighth configuration, or the ninth configuration can be employed.

Such a configuration can reduce the degree to which “communication symmetry” is broken.

In the twelfth configuration, instead of the configuration of the second embodiment, an antenna having a gain higher than the reference gain and an upper limit value of transmission power to the target wireless terminal 2 are higher than the reference upper limit value. Antenna control means for controlling the antenna so as to increase. If the transmission power of the wireless base station 3 increases, the wireless terminal 2 decreases its own transmission power. Therefore, the power consumption can be reduced by suppressing the upper limit value of the transmission power of the wireless terminal 2 with the intention of the user or the like. Can be suppressed. Further, the influence of the radio frequency electromagnetic field on the human body can be weakened.

The thirteenth configuration includes reception performance increasing means for increasing the reception performance according to the upper limit value of transmission power increased by the antenna control means in the twelfth configuration. For the reception performance, the seventh configuration, the eighth configuration, or the ninth configuration can be employed.

Such a configuration can reduce the degree to which “communication symmetry” is broken.

The configuration of the second embodiment or the first configuration, the second configuration, the third configuration, the fourth configuration, the fifth configuration, the sixth configuration in the modification of the second embodiment, In the seventh configuration, the eighth configuration, the ninth configuration, the tenth configuration, the eleventh configuration, the twelfth configuration, or the thirteenth configuration, the configuration of the first embodiment, or the third implementation The first configuration, the second configuration, the third configuration, the fourth configuration, the fifth configuration, the sixth configuration, the seventh configuration, the eighth configuration, and the ninth configuration in the modification of the embodiment The tenth configuration, the eleventh configuration, or the twelfth configuration can also be applied. That is, a configuration for setting an upper limit value of transmission power and a configuration for storing a table can be adopted. For example, when the third configuration in the modification example of the first embodiment is applied to the tenth configuration in the modification example of the second embodiment, the wireless terminal 2 is connected to the wireless terminal 2 for each wireless terminal 2. Storage means for storing a transmission power upper limit value table in which an upper limit value of the transmission power of the wireless base station 3 is set is provided, and the transmission power upper limit value increasing means transmits the transmission power to the wireless terminal 2 for each wireless terminal 2. The upper limit value of power is increased to the value set in the transmission power upper limit value table for the wireless terminal 2.

[Third Embodiment]
Next, a third embodiment of the present invention will be described. Only differences from the first embodiment will be described.

The radio base station 3 executes normal adaptive transmission power control processing in W-CDMA instead of the adaptive transmission power control processing in FIG. 6, and in this embodiment, the radio communication control processing shown in the flowchart in FIG. Execute.

FIG. 10 is a flowchart showing the wireless communication control process.
When the wireless communication control process is executed in the wireless base station 3, first, the process proceeds to step S300 as shown in FIG.

In step S300, the upper limit value Pmax of the transmission power set for the wireless terminal 2 (hereinafter referred to as “target wireless terminal 2” in the description of FIG. 10) subject to wireless access control is stored in a database or the like. The communication control information 20 corresponding to the target wireless terminal 2 is read, and the process proceeds to step S302.

In step S302, the current value Pcr of the transmission power of the target wireless terminal 2 is received from the target wireless terminal 2, and the process proceeds to step S304, where the current value Pcr of the transmission power is larger than the upper limit value Pmax of the transmission power. If it is determined whether or not the current value Pcr is equal to or lower than the upper limit value Pmax (NO), the process proceeds to step S306.

In step S306, processing for performing normal radio access control in W-CDMA is executed, a series of processing is terminated, and the original processing is restored.

On the other hand, when it is determined in step S304 that the current value Pcr of the transmission power is larger than the upper limit value Pmax of the transmission power (YES), the series of processes is terminated and the original process is restored.

Next, the operation of the present embodiment will be described.
When the user or the like wants to reduce the upper limit value of the transmission power of the wireless terminal 2, the user or the like accesses the operation center 7 in the wireless terminal 2 or other communication terminal and uses the wireless terminal as the upper limit value of the transmission power. A value lower than the maximum transmission power of 2 is set.

When the operation center 7 receives a request from a user or the like, the upper limit value of the transmission power of the target wireless terminal 2 is set in the communication control information 20 by setting processing.

When the upper limit value of the transmission power is set, the radio base station 3 performs radio access only when the transmission power of the radio terminal 2 is smaller than the value set in the communication control information 20 for the radio terminal 2. Control is performed.

Thus, in the present embodiment, the radio base station 3 receives the current value Pcr of the transmission power of the radio terminal 2, and the received current value Pcr of the transmission power is set for the radio terminal 2. If the transmission power exceeds the upper limit Pmax, communication with the wireless terminal 2 is prohibited.

Thereby, when the wireless terminal 2 communicates with the transmission power exceeding the upper limit value Pmax, the wireless terminal 2 cannot communicate with the wireless base station 3. Power consumption can be suppressed by suppressing power. Further, the influence of the radio frequency electromagnetic field on the human body can be weakened.

In the present embodiment, step S302 corresponds to the transmission power value acquisition means of the invention 28 or 29, steps S300 and S304 correspond to the communication prohibition means of the invention 28 or 29, and the setting process of the operation center 7 is This corresponds to the transmission power upper limit setting means of the twenty-ninth aspect.

[Modification of Third Embodiment]
In addition, about the said 3rd Embodiment, the following structure is also employable.

The first configuration includes transmission power upper limit value acquisition means for acquiring from the wireless terminal 2 a value lower than the maximum transmission power of the wireless terminal 2 in the configuration of the third embodiment, The upper limit value setting means sets the value acquired from the wireless terminal 2 by the transmission power upper limit value acquisition means as the upper limit value of the transmission power of the wireless terminal 2. That is, when the user wants to lower the upper limit value of the transmission power of his / her wireless terminal 2, the upper limit value of the transmission power is set in the own wireless terminal 2. Here, the transmission power upper limit value acquisition means can be provided in the radio base station 3, the radio network control device 4, the subscriber exchange 5, the relay exchange 6 or the operation center 7.

The second configuration is a transmission power upper limit value obtained from the wireless terminal 2 related to the wireless terminal 2 that is lower than the maximum transmission power of the wireless terminal 2 in the configuration of the third embodiment. The transmission power upper limit setting unit includes an acquisition unit, and sets the value acquired by the transmission power upper limit acquisition unit from the radio terminal 2 related to the radio terminal 2 as the upper limit value of the transmission power of the radio terminal 2 To do. For example, when the parent wants to lower the upper limit value of the transmission power of the child radio terminal 2, the upper limit value of the transmission power is set in the parent radio terminal 2. Here, the wireless terminal 2 related to the wireless terminal 2 includes, for example, a wireless terminal 2 that is a communication partner or a wireless terminal 2 that is owned by family members, friends, employees, and other related parties. The transmission power upper limit acquisition means can be provided in the radio base station 3, the radio network control device 4, the subscriber exchange 5, the relay exchange 6 or the operation center 7.

In the third configuration, instead of the configuration of the third embodiment, transmission power in which a value lower than the maximum transmission power of the wireless terminal 2 is set as the upper limit value of the transmission power for each wireless terminal 2 Transmission power upper limit value storage means for storing the upper limit value table, and the wireless terminal 2 so that the upper limit value of the transmission power of the wireless terminal 2 becomes the value set in the transmission power upper limit value table for the wireless terminal 2 Wireless terminal control means for controlling the machine 2. Here, the setting process (transmission power upper limit setting means) in the third embodiment may not be provided. The transmission power upper limit value storage means can be provided in the radio base station 3, the radio network controller 4, the subscriber exchange 5, the relay exchange 6 or the operation center 7. The same applies to the location where the wireless terminal control means is provided.

Even with such a configuration, the same effect as in the third embodiment can be obtained.
A fourth configuration includes a transmission power upper limit value acquisition means for acquiring a value lower than the maximum transmission power of the wireless terminal 2 from the wireless terminal 2 in the third configuration, and a transmission power from the wireless terminal 2 Transmission power upper limit value setting means for setting the value acquired by the upper limit value acquisition means in the transmission power upper limit value table as the upper limit value of the transmission power of the wireless terminal 2. That is, when the user wants to lower the upper limit value of the transmission power of his / her wireless terminal 2, the upper limit value of the transmission power is set in the own wireless terminal 2. Here, the transmission power upper limit value acquisition means can be provided in the radio base station 3, the radio network control device 4, the subscriber exchange 5, the relay exchange 6 or the operation center 7. The same applies to places where transmission power upper limit setting means is provided.

A fifth configuration is a transmission power upper limit value acquisition unit that acquires a value lower than the maximum transmission power of the wireless terminal 2 from the wireless terminal 2 related to the wireless terminal 2 in the third configuration, Transmission power upper limit value setting means for setting the value acquired by the transmission power upper limit value acquisition means from the wireless terminal 2 related to the wireless terminal 2 in the transmission power upper limit value table as the upper limit value of the transmission power of the wireless terminal 2 With. For example, when the parent wants to lower the upper limit value of the transmission power of the child radio terminal 2, the upper limit value of the transmission power is set in the parent radio terminal 2. Here, the wireless terminal 2 related to the wireless terminal 2 is the same as described above. The transmission power upper limit acquisition means can be provided in the radio base station 3, the radio network control device 4, the subscriber exchange 5, the relay exchange 6 or the operation center 7. The same applies to places where transmission power upper limit setting means is provided.

In the sixth configuration, instead of the configuration of the third embodiment, transmission power for setting a lower value than the maximum transmission power of the wireless terminal 2 as the upper limit value of the transmission power for each wireless terminal 2 A transmission power upper limit value acquisition unit that is communicably connected to a management device including an upper limit value setting unit and acquires the value set by the transmission power upper limit value setting unit from the management device, and an upper limit value of the transmission power of the wireless terminal 2 Is provided with wireless terminal control means for controlling the wireless terminal 2 so that the wireless terminal 2 has the value acquired by the transmission power upper limit value acquiring means. That is, the transmission power upper limit setting means is provided separately as a management device. Here, the management device may be a separate entity from the transmission power upper limit value acquisition means and the wireless terminal control means, and the wireless base station 3, the wireless network control device 4, the subscriber exchange 5, the relay exchange 6 or the operation center. 7 can also be configured. Further, the transmission power upper limit value acquisition means can be provided in the radio base station 3, the radio network control device 4, the subscriber exchange 5, the relay exchange 6 or the operation center 7 if it is separate from the management apparatus. The same applies to the location where the wireless terminal control means is provided.

Even with such a configuration, the same effect as in the third embodiment can be obtained.
According to a seventh configuration, in the sixth configuration, the management device includes a second transmission power upper limit value acquisition unit that acquires a value lower than the maximum transmission power of the wireless terminal 2 from the wireless terminal 2, The transmission power upper limit value setting unit sets the value acquired from the wireless terminal 2 by the second transmission power upper limit value acquisition unit as the upper limit value of the transmission power of the wireless terminal 2. That is, when the user wants to lower the upper limit value of the transmission power of his / her wireless terminal 2, the upper limit value of the transmission power is set in the own wireless terminal 2. Here, the second transmission power upper limit value acquisition means can be provided in the radio base station 3, the radio network controller 4, the subscriber exchange 5, the relay exchange 6 or the operation center 7.

According to an eighth configuration, in the sixth configuration, the management apparatus obtains a value lower than the maximum transmission power of the wireless terminal 2 from the wireless terminal 2 related to the wireless terminal 2. The transmission power upper limit setting unit includes an upper limit value acquisition unit, and the transmission power upper limit setting unit obtains the value acquired by the second transmission power upper limit acquisition unit from the wireless terminal 2 related to the wireless terminal 2 by the transmission power of the wireless terminal 2. Set as the upper limit. For example, when the parent wants to lower the upper limit value of the transmission power of the child radio terminal 2, the upper limit value of the transmission power is set in the parent radio terminal 2. Here, the wireless terminal 2 related to the wireless terminal 2 is the same as described above. Further, the second transmission power upper limit value acquisition means can be provided in the radio base station 3, the radio network control device 4, the subscriber exchange 5, the relay exchange 6 or the operation center 7.

In the ninth configuration, instead of the configuration of the third embodiment, transmission power in which a value lower than the maximum transmission power of the wireless terminal 2 is set as the upper limit value of the transmission power for each wireless terminal 2 A transmission power upper limit value acquisition unit that is communicably connected to a management device that includes a transmission power upper limit value storage unit that stores an upper limit value table, and that acquires a value set in the transmission power upper limit value table from the management device, and a wireless terminal Wireless terminal control means for controlling the wireless terminal 2 so that the upper limit value of the transmission power of 2 is the value acquired by the transmission power upper limit value acquisition means for the wireless terminal 2. That is, the transmission power upper limit storage means is provided separately as a management device. Here, the management device only needs to be separate from the transmission power upper limit value storage means and the wireless terminal control means, and the wireless base station 3, the wireless network control device 4, the subscriber exchange 5, the relay exchange 6 or the operation center. 7 can also be configured. Further, the setting process (transmission power upper limit setting means) in the third embodiment may not be provided. Further, the transmission power upper limit storage means can be provided in the radio base station 3, the radio network controller 4, the subscriber exchange 5, the relay exchange 6 or the operation center 7 if it is separate from the management apparatus. The same applies to the location where the wireless terminal control means is provided.

Even with such a configuration, the same effect as in the third embodiment can be obtained.
According to a tenth configuration, in the ninth configuration, the management device includes a second transmission power upper limit value acquisition unit configured to acquire a value lower than the maximum transmission power of the wireless terminal 2 from the wireless terminal 2; A transmission power upper limit value setting unit is provided that sets the value acquired from the terminal 2 by the second transmission power upper limit value acquisition unit as the upper limit value of the transmission power of the wireless terminal 2 in the transmission power upper limit value table. That is, when the user wants to lower the upper limit value of the transmission power of his / her wireless terminal 2, the upper limit value of the transmission power is set in the own wireless terminal 2. Here, the second transmission power upper limit value acquisition means can be provided in the radio base station 3, the radio network controller 4, the subscriber exchange 5, the relay exchange 6 or the operation center 7. The same applies to places where transmission power upper limit setting means is provided.

According to an eleventh configuration, in the ninth configuration, the management device acquires a value lower than the maximum transmission power of the wireless terminal 2 from the wireless terminal 2 related to the wireless terminal 2. The value acquired by the second transmission power upper limit acquisition unit from the upper limit value acquisition unit and the wireless terminal 2 related to the wireless terminal 2 is stored in the transmission power upper limit value table as the upper limit value of the transmission power of the wireless terminal 2. Transmission power upper limit setting means for setting. For example, when the parent wants to lower the upper limit value of the transmission power of the child radio terminal 2, the upper limit value of the transmission power is set in the parent radio terminal 2. Here, the wireless terminal 2 related to the wireless terminal 2 is the same as described above. Further, the second transmission power upper limit value acquisition means can be provided in the radio base station 3, the radio network control device 4, the subscriber exchange 5, the relay exchange 6 or the operation center 7. The same applies to places where transmission power upper limit setting means is provided.

In the twelfth configuration, instead of the configuration of the third embodiment, a value lower than the maximum transmission power of the wireless terminal 2 is acquired from the wireless terminal 2 or the wireless terminal 2 related thereto. The transmission power upper limit acquisition means and the upper limit value of the transmission power of the wireless terminal 2 are the values acquired by the transmission power upper limit acquisition means from the wireless terminal 2 or the wireless terminal 2 related thereto, Wireless terminal control means for controlling the wireless terminal 2. Here, the setting process (transmission power upper limit setting means) in the third embodiment may not be provided. The transmission power upper limit acquisition means can be provided in the radio base station 3, the radio network control device 4, the subscriber exchange 5, the relay exchange 6 or the operation center 7. The same applies to the location where the wireless terminal control means is provided.

Even with such a configuration, the same effect as in the third embodiment can be obtained.
In the thirteenth configuration, instead of the configuration of the third embodiment, the wireless terminal 2 receives the current value Pcr of the transmission power of the wireless base station 3, and the received current value Pcr of the transmission power is If the upper limit value Pmax of transmission power set for the radio base station 3 is exceeded, communication with the radio base station 3 is prohibited. In addition, the present invention can also be applied to a one-to-one communication relationship such as a transceiver. That is, the present invention can be widely applied to the wireless terminal 2, the wireless base station 3, the transceiver and other wireless transceivers.

With such a configuration, the communication partner cannot communicate with the wireless transceiver when communicating with a transmission power that exceeds or exceeds a predetermined value. Power consumption can be suppressed by suppressing the transmission power of the other party. Further, the influence of the radio frequency electromagnetic field on the human body can be weakened.

[Other variations]
In the second embodiment and its modification, the received radio wave intensity is measured, and based on this, the upper limit value of transmission power is reduced, and a state in which good communication can be expected is determined. However, in digital communication, instead of measuring the strength of the received radio wave, the error rate of the received data is measured, the reception sensitivity is reduced based on the error rate, and good communication is expected. You may judge the state which can be performed.

In the second embodiment and the modification thereof, the reception sensitivity is reduced according to the upper limit value of the transmission power reduced by the operation of the “operation unit” 114. However, the present invention is not limited to this. In the digital communication, the allowable value of the error rate of the received data can be reduced in accordance with the upper limit value of the transmission power reduced by the operation of the “operation means” 114. Specifically, in the “normal transmission power” state, when the error rate of the received data is equal to or lower than the first threshold (error rate allowable value), it is determined that communication is established, whereas “transmission lower than normal” In the “power” state, it is determined that communication is established when the error rate of the received data is equal to or lower than a second threshold value (allowable error rate) lower than the first threshold value.

In the second embodiment and its modification, the upper limit value of the transmission power is lowered by the operation of the “operation means” 114, and the reception sensitivity is lowered according to the lower limit value of the transmission power. Although it comprised, it is not restricted to this, The following structure is also employable.

As a first configuration, a “storage unit” that stores fixed information indicating a value lower than the maximum transmission power as a fixed value of the upper limit value of transmission power is provided, and the upper limit value of the transmission power is set by the fixed information of “storage unit”. The value is fixed to a value lower than the maximum transmission power, and the reception sensitivity is fixed to a value lower than the maximum reception sensitivity according to the fixed upper limit value of the transmission power. In this case, the “operation means” 114 may not be provided.

As a second configuration, fixed information indicating a value lower than the maximum reception performance is stored as a fixed value of reception performance (for example, reception sensitivity, a reference value for determining that communication is established or an allowable value of an error rate of received data). The “storage means” is provided, the reception performance is fixed to a value lower than the maximum reception performance by the fixed information of the “storage means”, and the upper limit value of the transmission power is lower than the maximum transmission power according to the fixed reception performance. To fix. Here, the maximum reception performance refers to the maximum value of the reception performance that can be realized by the wireless transceiver or the maximum reception performance based on the standard required when the communication quality with the wireless base station is the minimum. . In this case, the “operation means” 114 may not be provided.

In the second embodiment and its modification, a single operation reduces the upper limit value of transmission power (hereinafter referred to as transmission control) and the reception sensitivity (hereinafter referred to as reception control). (1) a configuration in which transmission control and reception control are performed by a plurality of operations, (2) a second operation (1) after transmission control is performed by a first operation (one or a plurality of operations). (3) A configuration in which reception control is performed by a first operation (one or a plurality of operations) and a transmission control is performed by a second operation (one or a plurality of operations). Or (4) A configuration in which only transmission control is performed by a predetermined operation (one or a plurality of operations), and reception control is performed so that the reception range matches the transmission range or the mismatched portion becomes small regardless of the operation. (5) Predetermined Operation performed only received controlled by (1 or more operations), regardless of the operation, the receiving range can also be adopted a configuration for performing transmission control such that, or unmatched portion thereof coincides with the range of transmission is reduced. The predetermined operation that triggers transmission control or reception control may be common to an operation that activates another function. For example, if the operation is common to the operation for increasing / decreasing the call volume, the upper limit value of the transmission power can be decreased along with the operation for decreasing the call volume.

Further, in the second embodiment and the modifications thereof, as shown in FIGS. 9A and 9D, only the upper limit value of the transmission power is reduced among the transmission power characteristics. However, the present invention is not limited to this. For example, the entire transmission power characteristic can be reduced.

Further, in the second embodiment and the modification thereof, as shown in FIGS. 9B and 9E, the reception sensitivity is configured to be reduced to a constant value 813 regardless of the propagation loss. However, the present invention is not limited to this, and for example, it may be configured to gradually decrease from the maximum receiving sensitivity 805 to a constant value 813 as the propagation loss increases.

Further, in the second embodiment and the modification thereof, the radio base station 3 reduces the upper limit value of the transmission power by operating the “operation unit” 114, and the reception sensitivity according to the reduced upper limit value of the transmission power. However, if the current transmission power is the maximum transmission power 804 in FIG. 9, the transmission power is lower than the transmission power (maximum transmission power 804) required for communication with the wireless terminal 2. It can be said that the value (constant value 811) is set as the upper limit value and the transmission power is suppressed.

In the second embodiment and the modification thereof, the radio base station 3 is configured to reduce the upper limit value of the transmission power and lower the reception sensitivity according to the lower limit value of the transmission power. However, the present invention is not limited to this, and the following configuration may be employed.

As a first configuration, the upper limit value of the transmission power of the wireless base station 3 is lower than the maximum transmission power according to the standard required when the communication quality with the communication partner (for example, the wireless terminal 2) is minimum. The reception performance of the wireless base station 3 is a value lower than the standard maximum reception performance required when the communication quality with the communication partner is the minimum. That is, the configuration in which the upper limit value of transmission power and the reception sensitivity are not lowered as in the second embodiment and its modification, but the upper limit value of transmission power and the reception sensitivity are originally low values from the beginning. It is.

As a second configuration, the upper limit value of the transmission power of the wireless base station 3 is lower than the maximum transmission power according to the standard required when the communication quality with the communication partner (for example, the wireless terminal 2) is minimum. This is a value, and the communication status is notified to the communication partner when the reception performance of the radio base station 3 is set to a value lower than the maximum reception performance according to the standard required when the communication quality with the communication partner is minimum. . That is, the configuration in which the upper limit value of transmission power and the reception sensitivity are not lowered as in the second embodiment and its modification, but the upper limit value of transmission power and the reception sensitivity are originally low values from the beginning. It is.

As a third configuration, the upper limit value of the transmission power of the radio base station 3 is reduced to a value lower than the maximum upper limit value, and a transmission power higher than the lower limit value of the transmission power is received from the communication partner required for communication. Notify when. In other words, the reception performance of the radio base station 3 does not necessarily need to be reduced, but notification is made so that at least reception is possible even in a region where the reception range does not match the transmission range.

As a fourth configuration, the upper limit value of the transmission power of the radio base station 3 is a value lower than the maximum transmission power according to the standard required when the communication quality with the communication partner is the minimum, and the upper limit of the transmission power When a transmission power higher than the value is received from a communication partner required for communication, a notification is performed. In other words, the reception performance of the radio base station 3 does not necessarily need to be reduced, but notification is made so that at least reception is possible even in a region where the reception range does not match the transmission range.

As a fifth configuration, in the third and fourth configurations, when received from a communication partner that can communicate with transmission power equal to or lower than the upper limit value of transmission power, the first notification mode (for example, voice pattern 1 or vibration pattern) 1), when a transmission power higher than the upper limit value of the transmission power is received from a communication partner required for communication, a second notification mode (for example, voice pattern 2 or vibration) different from the first notification mode Notification in pattern 2).

Also, the second embodiment and its modifications can be applied to congestion control and the like. Specifically, an abnormality detection means for detecting an abnormality in the communication network (for example, congestion of the communication network, failure (including equipment and line failures), artificial regulation and other abnormalities), and an abnormality detection means A transmission power upper limit lowering unit that lowers the upper limit of the transmission power of the radio base station 3 when the detected abnormality is detected. As a result, the radio zone covered by the radio base station 3 is reduced, so that the number of radio terminals 2 to be subjected to radio access control can be reduced. Therefore, it can be expected that communication is efficiently performed when a communication network is abnormal and that many people can communicate.

In the first to third embodiments and the modifications thereof, the upper limit value of the transmission power is set by accessing the operation center 7. However, the present invention is not limited to this, and a specific telephone number is set. The upper limit value of the transmission power is set by making a call to (for example, 0 [W] for 0990-XX-XXX1, 0.01 [W] for 0990-XX-XXX2, and 0990-XX-XXX3. It is also possible to configure such that it is set to 0.001 [W]. Thereby, since the setting can be performed only by making a call to a specific telephone number, it is easy to set the upper limit value of the transmission power.

Further, in the third embodiment and the modification thereof, the process of step S302 is configured to receive the current value Pcr of the transmission power of the target wireless terminal 2 from the target wireless terminal 2. Not limited to this, when the current value Pcr of the transmission power of the target wireless terminal 2 is held by internal processing such as adaptive transmission power control processing, the current value Pcr of the transmission power of the target wireless terminal 2 is stored in the wireless base station 3. It can also be configured to obtain from internal processing. Further, the present invention is not limited thereto, and the wireless terminal 2 or other communication terminals related to the target wireless terminal 2, the wireless network control device 4, the subscriber switch 5, the relay switch 6, or the operation center 7 are configured to obtain the information. You can also

In the modification of the second embodiment, as a tenth configuration, for each wireless terminal 2, transmission power for increasing the upper limit value of transmission power to the wireless terminal 2 from the reference upper limit value is increased. Although it is configured to include the upper limit value increasing means, the present invention is not limited to this, and detects abnormalities in the communication network (for example, communication network congestion, failures (including device and line failures), human regulation, and other abnormalities). An abnormality detection means is provided, and the transmission power upper limit value increasing means sets the upper limit value of the transmission power to the wireless terminal 2 for each wireless terminal 2 when the abnormality is detected by the abnormality detection means. It can also be configured to increase.

With such a configuration, since the wireless terminal 2 can communicate with low power consumption in the event of an abnormality, the possibility that communication cannot be performed in the event of an abnormality can be reduced.

In the modification of the second embodiment, as the twelfth configuration, the antenna having a gain higher than the reference gain and the upper limit value of the transmission power to the target wireless terminal 2 are the reference upper limit values. However, the present invention is not limited to this. However, the present invention is not limited to this, and communication network abnormalities (for example, communication network congestion and failures (including device and line failures), An anomaly detecting means for detecting an anomaly (artificial regulation and other anomalies), and the antenna control means is configured such that an upper limit value of transmission power to the target wireless terminal 2 is a reference upper limit value when an abnormality is detected by the anomaly detecting means. Alternatively, the antenna may be controlled so as to increase more.

With such a configuration, since the wireless terminal 2 can communicate with low power consumption in the event of an abnormality, the possibility that communication cannot be performed in the event of an abnormality can be reduced.

DESCRIPTION OF SYMBOLS 100 ... Communication system, 2 ... Wireless terminal, 3 ... Wireless base station apparatus, 4 ... Wireless network control apparatus, 5 ... Subscriber switch, 51 ... Voice switch, 52 ... Packet switch, 53 ... Visitor location register, 6 ... Relay Switch, 61 ... relay voice switch, 62 ... relay packet switch, 7 ... operation center, 71 ... home location register, 9,13 ... gateway switch, 10 ... gateway, 12 ... POI, 20 ... communication control information, 111 ... antenna, 114 ... operation means, 121 ... band limiter, 122 ... sensitivity controller, 123 ... automatic gain control amplifier, 126 ... channel selector, 128 ... demodulator, 171 ... carrier generator, 172 ... modulator, 173: Transmission power controller, 315: Operation signal, 33 ... received signal, 332 ... demodulated signal, 352 ... correction control signal, 374 ... modulation signal, 375 ... transmission signal, 410 ... receiver, 450 ... control signal generating unit, 470 ... transmission unit

Claims (42)

  1. A communication system for wireless communication with a plurality of wireless terminals,
    Transmission power upper limit value setting means for setting a value lower than the maximum upper limit value of the wireless terminal as an upper limit value of the transmission power for each wireless terminal,
    Radio terminal control means for controlling the radio terminal so that the upper limit value of the transmission power of the radio terminal is the value set by the transmission power upper limit setting means for the radio terminal. A communication system characterized by the above.
  2. In claim 1,
    Transmission power upper limit value acquisition means for acquiring a value lower than the maximum upper limit value of the wireless terminal from the wireless terminal,
    The transmission power upper limit setting means sets the value acquired from the wireless terminal by the transmission power upper limit acquisition means as the upper limit value of the transmission power of the wireless terminal.
  3. In claim 1,
    Transmission power upper limit value acquisition means for acquiring a value lower than the maximum upper limit value of the wireless terminal from a wireless terminal related to the wireless terminal,
    The transmission power upper limit value setting means sets the value acquired by the transmission power upper limit value acquisition means from a wireless terminal related to the wireless terminal as an upper limit value of the transmission power of the wireless terminal. Communication system.
  4. A communication system for wireless communication with a plurality of wireless terminals,
    Transmission power upper limit value storage means for storing a transmission power upper limit value table in which a value lower than the maximum upper limit value of the wireless terminal is set as an upper limit value of transmission power for each wireless terminal;
    Wireless terminal control means for controlling the wireless terminal such that the upper limit value of the transmission power of the wireless terminal becomes a value set in the transmission power upper limit value table for the wireless terminal. A featured communication system.
  5. In claim 4,
    Transmission power upper limit value acquisition means for acquiring a value lower than the maximum upper limit value of the wireless terminal from the wireless terminal;
    Transmission power upper limit value setting means for setting the value acquired by the transmission power upper limit value acquisition means from the wireless terminal as the upper limit value of the transmission power of the wireless terminal in the transmission power upper limit value table. A communication system.
  6. In claim 4,
    Transmission power upper limit value acquisition means for acquiring a value lower than the maximum upper limit value of the wireless terminal from a wireless terminal related to the wireless terminal;
    A transmission power upper limit value setting unit that sets, in the transmission power upper limit value table, the value acquired by the transmission power upper limit value acquisition unit from the wireless terminal associated with the wireless terminal as the upper limit value of the transmission power of the wireless terminal. A communication system comprising:
  7. A communication system for wireless communication with a plurality of wireless terminals,
    For each wireless terminal, communicably connected to a management device including a transmission power upper limit setting means for setting a lower value than the maximum upper limit value of the wireless terminal as an upper limit value of the transmission power,
    Transmission power upper limit value acquisition means for acquiring the value set by the transmission power upper limit value setting means from the management device;
    Wireless terminal control means for controlling the wireless terminal so that the upper limit value of the transmission power of the wireless terminal becomes the value acquired by the transmission power upper limit value acquisition means for the wireless terminal. A featured communication system.
  8. In claim 7,
    The management device includes second transmission power upper limit value acquisition means for acquiring a value lower than the maximum upper limit value of the wireless terminal from the wireless terminal,
    The transmission power upper limit setting means sets the value acquired from the wireless terminal by the second transmission power upper limit acquisition means as the upper limit value of the transmission power of the wireless terminal.
  9. In claim 7,
    The management device includes second transmission power upper limit value acquisition means for acquiring a value lower than a maximum upper limit value of the wireless terminal from a wireless terminal related to the wireless terminal,
    The transmission power upper limit setting means sets the value acquired by the second transmission power upper limit acquisition means from the wireless terminal related to the wireless terminal as the upper limit value of the transmission power of the wireless terminal. A featured communication system.
  10. A communication system for wireless communication with a plurality of wireless terminals,
    For each wireless terminal, it is possible to communicate with a management device including a transmission power upper limit value storage unit that stores a transmission power upper limit value table in which a value lower than the maximum upper limit value of the wireless terminal is set as the upper limit value of the transmission power. connection,
    A transmission power upper limit value acquisition means for acquiring a value set in the transmission power upper limit value table from the management device;
    Wireless terminal control means for controlling the wireless terminal so that the upper limit value of the transmission power of the wireless terminal becomes the value acquired by the transmission power upper limit value acquisition means for the wireless terminal. A featured communication system.
  11. In claim 10,
    The management device includes second transmission power upper limit value acquisition means for acquiring a value lower than the maximum upper limit value of the wireless terminal from the wireless terminal;
    Transmission power upper limit value setting means for setting the value acquired by the second transmission power upper limit value acquisition means from the wireless terminal as the upper limit value of the transmission power of the wireless terminal in the transmission power upper limit value table. A featured communication system.
  12. In claim 10,
    The management device includes second transmission power upper limit value acquisition means for acquiring a value lower than the maximum upper limit value of the wireless terminal from a wireless terminal related to the wireless terminal;
    A transmission power upper limit value set in the transmission power upper limit value table as the upper limit value of the transmission power of the wireless terminal, the value acquired by the second transmission power upper limit value acquisition means from the wireless terminal related to the wireless terminal A communication system comprising: setting means.
  13. A communication system for wireless communication with a plurality of wireless terminals,
    Transmission power upper limit value acquisition means for acquiring a value lower than the maximum upper limit value of the wireless terminal from the wireless terminal or a wireless terminal related thereto,
    A radio terminal that controls the radio terminal so that the upper limit value of the transmission power of the radio terminal is the value acquired by the transmission power upper limit value acquisition unit from the radio terminal or a radio terminal related thereto A communication system comprising a machine control means.
  14. A communication system for wireless communication with a plurality of wireless terminals,
    A communication system, comprising: a transmission power upper limit value increasing means for increasing an upper limit value of transmission power to the wireless terminal for each wireless terminal than a reference upper limit value.
  15. In claim 14,
    A communication system comprising: reception performance increasing means for increasing reception performance in accordance with an upper limit value of transmission power increased by said transmission power upper limit value increasing means.
  16. A communication system for wireless communication with a plurality of wireless terminals,
    An antenna having a gain higher than a reference gain;
    A communication system comprising: antenna control means for controlling the antenna such that an upper limit value of transmission power to a target wireless terminal increases from a reference upper limit value.
  17. In claim 16,
    A communication system comprising: reception performance increasing means for increasing reception performance in accordance with an upper limit value of transmission power increased by the antenna control means.
  18. A communication system for wireless communication with a plurality of wireless terminals,
    A transmission power upper limit lowering means for lowering the upper limit of transmission power;
    A communication system comprising: reception performance reducing means for reducing reception performance in accordance with an upper limit value of transmission power reduced by the transmission power upper limit value reducing means.
  19. A communication system for wireless communication with a plurality of wireless terminals,
    Means for lowering reception performance to reduce reception performance;
    A communication system comprising: a transmission power upper limit value reducing means for reducing an upper limit value of transmission power in accordance with the reception performance reduced by the reception performance reducing means.
  20. A communication system for wireless communication with a plurality of wireless terminals,
    A transmission power upper limit lowering means for lowering the upper limit of transmission power;
    Reception status notifying means for notifying the radio terminal of the reception status when the reception performance is reduced or reduced according to the upper limit value of the transmission power reduced by the transmission power upper limit value reduction means. A communication system characterized by the above.
  21. A communication system for wireless communication with a plurality of wireless terminals,
    A reception status notification means for notifying the wireless terminal of the reception status when the reception performance is reduced or when it is reduced;
    A communication system comprising: a transmission power upper limit value reduction means for reducing the upper limit value of transmission power in accordance with the reception performance when reduced or when reduced.
  22. In any one of Claims 18 and 19,
    The communication performance reducing means reduces the reception performance of the wireless terminal for each wireless terminal.
  23. In any one of Claims 18 thru | or 22,
    The transmission power upper limit value lowering unit lowers the upper limit value of transmission power to the radio terminal for each radio terminal.
  24. 24. In any one of claims 18 to 23.
    A communication system for establishing communication with the wireless terminal in wireless transmission / reception stronger than a pre-registered radio wave intensity according to reception performance.
  25. 25. In any one of claims 15, 17 to 24,
    The communication system, wherein the reception performance is reception sensitivity.
  26. 25. In any one of claims 15, 17 to 24,
    The communication system according to claim 1, wherein the reception performance is a reference value when it is determined that communication is established.
  27. 25. In any one of claims 15, 17 to 24,
    The communication system according to claim 1, wherein the reception performance is an allowable value of an error rate of received data.
  28. A communication system for wireless communication with a plurality of wireless terminals,
    Transmission power value acquisition means for acquiring a value of transmission power of the wireless terminal;
    A communication prohibiting means for prohibiting communication with the wireless terminal when the value of the transmission power acquired by the transmission power value acquiring means is equal to or greater than a predetermined value; system.
  29. In claim 28,
    Transmission power upper limit setting means for setting a lower value than the maximum upper limit value of the wireless terminal as an upper limit value of the transmission power for each wireless terminal,
    The communication prohibiting means, or the transmission power value acquired by the transmission power value acquisition means for the wireless terminal is greater than or equal to the value set by the transmission power upper limit setting means for the wireless terminal A communication system characterized by prohibiting communication with the wireless terminal when exceeding.
  30. In claim 29,
    Transmission power upper limit value acquisition means for acquiring a value lower than the maximum upper limit value of the wireless terminal from the wireless terminal,
    The transmission power upper limit setting means sets the value acquired from the wireless terminal by the transmission power upper limit acquisition means as the upper limit value of the transmission power of the wireless terminal.
  31. In claim 29,
    Transmission power upper limit value acquisition means for acquiring a value lower than the maximum upper limit value of the wireless terminal from a wireless terminal related to the wireless terminal,
    The transmission power upper limit value setting means sets the value acquired by the transmission power upper limit value acquisition means from a wireless terminal related to the wireless terminal as an upper limit value of the transmission power of the wireless terminal. Communication system.
  32. In claim 28,
    Transmission power upper limit storage means for storing a transmission power upper limit value table in which a value lower than the maximum upper limit value of the wireless terminal is set as an upper limit value of the transmission power for each wireless terminal,
    The communication prohibiting means, when the value of the transmission power acquired by the transmission power value acquisition means for the wireless terminal is equal to or more than the value set in the transmission power upper limit table for the wireless terminal A communication system that prohibits communication with the wireless terminal in the case of failure.
  33. In claim 32,
    Transmission power upper limit value acquisition means for acquiring a value lower than the maximum upper limit value of the wireless terminal from the wireless terminal;
    Transmission power upper limit value setting means for setting the value acquired by the transmission power upper limit value acquisition means from the wireless terminal as the upper limit value of the transmission power of the wireless terminal in the transmission power upper limit value table. A communication system.
  34. In claim 32,
    Transmission power upper limit value acquisition means for acquiring a value lower than the maximum upper limit value of the wireless terminal from a wireless terminal related to the wireless terminal;
    A transmission power upper limit value setting unit that sets, in the transmission power upper limit value table, the value acquired by the transmission power upper limit value acquisition unit from the wireless terminal associated with the wireless terminal as the upper limit value of the transmission power of the wireless terminal. A communication system comprising:
  35. In claim 28,
    For each wireless terminal, communicably connected to a management device including a transmission power upper limit setting means for setting a lower value than the maximum upper limit value of the wireless terminal as an upper limit value of the transmission power,
    Transmission power upper limit value acquisition means for acquiring the value set by the transmission power upper limit value setting means from the management device,
    The communication prohibiting means is when the value of the transmission power acquired by the transmission power value acquisition means for the wireless terminal is greater than or equal to the value acquired by the transmission power upper limit value acquisition means for the wireless terminal. A communication system that prohibits communication with the wireless terminal in the case of failure.
  36. In claim 35,
    The management device includes second transmission power upper limit value acquisition means for acquiring a value lower than the maximum upper limit value of the wireless terminal from the wireless terminal,
    The transmission power upper limit setting means sets the value acquired from the wireless terminal by the second transmission power upper limit acquisition means as the upper limit value of the transmission power of the wireless terminal.
  37. In claim 35,
    The management device includes second transmission power upper limit value acquisition means for acquiring a value lower than a maximum upper limit value of the wireless terminal from a wireless terminal related to the wireless terminal,
    The transmission power upper limit setting means sets the value acquired by the second transmission power upper limit acquisition means from the wireless terminal related to the wireless terminal as the upper limit value of the transmission power of the wireless terminal. A featured communication system.
  38. In claim 28,
    For each wireless terminal, it is possible to communicate with a management device including a transmission power upper limit value storage unit that stores a transmission power upper limit value table in which a value lower than the maximum upper limit value of the wireless terminal is set as the upper limit value of the transmission power. connection,
    A transmission power upper limit value acquisition means for acquiring a value set in the transmission power upper limit value table from the management device;
    The communication prohibiting means is when the value of the transmission power acquired by the transmission power value acquisition means for the wireless terminal is greater than or equal to the value acquired by the transmission power upper limit value acquisition means for the wireless terminal. A communication system that prohibits communication with the wireless terminal in the case of failure.
  39. In claim 38,
    The management device includes second transmission power upper limit value acquisition means for acquiring a value lower than the maximum upper limit value of the wireless terminal from the wireless terminal;
    Transmission power upper limit value setting means for setting the value acquired by the second transmission power upper limit value acquisition means from the wireless terminal as the upper limit value of the transmission power of the wireless terminal in the transmission power upper limit value table. A featured communication system.
  40. In claim 38,
    The management device includes second transmission power upper limit value acquisition means for acquiring a value lower than the maximum upper limit value of the wireless terminal from a wireless terminal related to the wireless terminal;
    A transmission power upper limit value set in the transmission power upper limit value table as the upper limit value of the transmission power of the wireless terminal, the value acquired by the second transmission power upper limit value acquisition means from the wireless terminal related to the wireless terminal A communication system comprising: setting means.
  41. In claim 28,
    Transmission power upper limit value acquisition means for acquiring a value lower than the maximum upper limit value of the wireless terminal from the wireless terminal or a wireless terminal related thereto,
    The communication prohibition means is a value obtained by the transmission power upper limit value acquisition means from the wireless terminal or a wireless terminal related thereto, the value of the transmission power acquired by the transmission power value acquisition means for the wireless terminal. A communication system characterized by prohibiting communication with the wireless terminal if it is above or exceeds this.
  42. A transmission power value acquisition means for acquiring the value of the transmission power of the communication partner;
    Radio transmission / reception comprising: communication prohibiting means for prohibiting communication with the communication partner when the value of the transmission power acquired by the transmission power value acquiring means is equal to or greater than a predetermined value. Machine.
PCT/JP2012/061616 2012-05-02 2012-05-02 Wireless base station WO2013164895A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2012/061616 WO2013164895A1 (en) 2012-05-02 2012-05-02 Wireless base station

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012061616A JPWO2013164895A1 (en) 2012-05-02 2012-05-02 Wireless base station
PCT/JP2012/061616 WO2013164895A1 (en) 2012-05-02 2012-05-02 Wireless base station

Publications (1)

Publication Number Publication Date
WO2013164895A1 true WO2013164895A1 (en) 2013-11-07

Family

ID=49514304

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2012/061616 WO2013164895A1 (en) 2012-05-02 2012-05-02 Wireless base station

Country Status (2)

Country Link
JP (1) JPWO2013164895A1 (en)
WO (1) WO2013164895A1 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000022628A (en) * 1998-07-01 2000-01-21 Matsushita Electric Ind Co Ltd Communication method and communication system
JP2000341202A (en) * 1999-05-27 2000-12-08 Nec Corp Mobile communication system and method for checking distribution of mobile terminals desiring subscription and for tentative communication servicing
WO2002033837A1 (en) * 2000-10-20 2002-04-25 Hitachi, Ltd. Radio equipment
JP2003274457A (en) * 2002-03-19 2003-09-26 Sanyo Electric Co Ltd Mobile phone and control program
WO2007138714A1 (en) * 2006-05-30 2007-12-06 Hitachi Communication Technologies, Ltd. Mobile communication system connection regulation method, base station device, and terminal device
JP2010004187A (en) * 2008-06-18 2010-01-07 Ntt Docomo Inc Base station, and mobile communication method
JP2010258524A (en) * 2009-04-21 2010-11-11 Ntt Docomo Inc Communication terminal and method for use in radio communication system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3099848B2 (en) * 1992-10-05 2000-10-16 株式会社エヌ・ティ・ティ・ドコモ The mobile wireless device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000022628A (en) * 1998-07-01 2000-01-21 Matsushita Electric Ind Co Ltd Communication method and communication system
JP2000341202A (en) * 1999-05-27 2000-12-08 Nec Corp Mobile communication system and method for checking distribution of mobile terminals desiring subscription and for tentative communication servicing
WO2002033837A1 (en) * 2000-10-20 2002-04-25 Hitachi, Ltd. Radio equipment
JP2003274457A (en) * 2002-03-19 2003-09-26 Sanyo Electric Co Ltd Mobile phone and control program
WO2007138714A1 (en) * 2006-05-30 2007-12-06 Hitachi Communication Technologies, Ltd. Mobile communication system connection regulation method, base station device, and terminal device
JP2010004187A (en) * 2008-06-18 2010-01-07 Ntt Docomo Inc Base station, and mobile communication method
JP2010258524A (en) * 2009-04-21 2010-11-11 Ntt Docomo Inc Communication terminal and method for use in radio communication system

Also Published As

Publication number Publication date
JPWO2013164895A1 (en) 2015-12-24

Similar Documents

Publication Publication Date Title
KR101120701B1 (en) Method for establishing a list of neighboring cells in a mobile radiocommunication system
JP5318772B2 (en) Send special neighbor cell list
JP5497939B2 (en) Method and base station for controlling transmission power of access point
US6397054B1 (en) Features for emergency calling and short messaging system
US8190145B2 (en) Apparatus and method for mobile station-assisted optimization of a wireless network
US7957742B2 (en) WLAN having load balancing by access point admission/termination
CN102870455B (en) Personal wireless device is used to carry out network test
US8849340B2 (en) Methods and devices for reducing interference in an uplink
JP4059885B2 (en) Method for controlling the output of an access packet transmitted by a mobile station in a wireless communication system, and a wireless communication system implementing the method
KR100797501B1 (en) Wireless communication method and apparatus for optimizing the performance of access points
US9445239B2 (en) Location based operation of a wireless mobile system
JP4537409B2 (en) Method, system and computer program product for controlling usage of a mobile terminal
US9560585B2 (en) Method and apparatus for access network selection
JP2007228636A (en) Multi-mode radio telephone
FI115879B (en) Channel selection in wireless communication system
TWI404433B (en) Cell network using friendly relay communication exchanges
KR20140030273A (en) Allocating access to multiple radio access technologies via a multi-mode access point
KR101059662B1 (en) Method and apparatus for power control and / or interference management in a hybrid wireless communication system supporting JAN signaling and peer-to-peer signaling
TWI463893B (en) Method of handling access network discovery and selection function and related communication device
KR20100075628A (en) Access management for wireless communication
KR20100085095A (en) Access terminal configuration and access control
JP2011512083A (en) Backhaul signaling for interference avoidance
US20040192284A1 (en) Adaptive beacon interval in WLAN
TWI389513B (en) Cell network selectively applying proxy mode to minimize power
US7990855B2 (en) Method and system for joint reverse link access and traffic channel radio frequency overload control

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12875984

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase in:

Ref document number: 2014513332

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase in:

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12875984

Country of ref document: EP

Kind code of ref document: A1