JP2003333648A - Radio line control method, radio line control system, and radio line control station - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a radio line control method which efficiently uses frequencies. <P>SOLUTION: A mobile communication system A periodically acquires a communication traffic (S104) and compares it with a threshold (S106). When the communication traffic exceeds the threshold, a mobile communication system B using the shared frequency (S108) is requested to use a shared frequency. The mobile communication system B acquires a communication traffic and compares it with a threshold (S110). When the communication traffic is smaller than the threshold, radio communication using the shared frequency in the mobile communication system B is stopped, transmission of a radio wave having the shared frequency is stopped (S118), and an operation of the shared frequency in the mobile communication system A is started (S122). <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless line control method, a wireless line control system and a wireless line control station.

[0002]

2. Description of the Related Art With the development of mobile communication technology, a PDC system using a TDMA system, a PDC packet system using a packet system, and an IM using a CDMA system.
A plurality of mobile communication systems such as the T2000 system have been put into practical use. Each of these mobile communication systems communicates with the mobile station via its own radio base station.

In many cases, the radio zones provided by the radio base stations of each of these mobile communication systems overlap each other. In such overlapping radio zones, it is necessary to prevent radio wave interference between a plurality of mobile communication systems. for that reason,
In such a case, different frequencies are used for each of the plurality of mobile communication systems for communication between the radio base station and the mobile station. That is, for example, when three mobile communication systems A, B, and C are operated, the mobile communication system A uses the frequencies f1 and f2 and the mobile communication system B operates in the overlapping radio zones. It is preset that the frequency f3 is used and the mobile communication system C uses the frequency f4. Therefore, the radio network controller of each of the plurality of mobile communication systems allocates a channel to the preset frequency when a call occurs, and establishes communication between the radio base station and the mobile station.

[0004]

Here, the plurality of mobile communication systems often differ in the time zone in which the communication traffic becomes large and the time zone in which the communication traffic becomes small, because the communication system and the service form are different. In this case, as in the above-mentioned conventional technique, since each of the plurality of mobile communication systems uses the frequency fixedly set in advance, in the wireless zones overlapping each other,
Frequently, there occurs a situation in which a mobile communication system having a large communication traffic and a short operating frequency and a mobile communication system having a small communication traffic and a large operating frequency coexist, and the frequency cannot be used efficiently. Particularly, in a mobile communication system in which communication traffic is large and operating frequencies are insufficient, there is a possibility that the number of channels allocated to the generated call is insufficient and the connection quality is deteriorated.

Therefore, the present invention solves these problems and provides a radio channel control method, a radio channel control system and a radio channel control station which can efficiently use a frequency when a plurality of mobile communication systems coexist. The challenge is to provide.

[0006]

In order to solve the above-mentioned problems, according to the wireless line control method of the present invention, the wireless zones provided by the wireless base stations overlap each other, and the wireless zones move in the wireless zone. Regarding a frequency used for radio communication with a station, between each of a plurality of mobile communication systems in which a frequency sharable with each other is prepared, a radio line control method for controlling the use state of the sharable frequency, It is characterized by comprising an acquisition step of acquiring the communication traffic of the wireless zone, and a control step of controlling the use state of the sharable frequency based on the communication traffic acquired in the acquisition step.

Further, in order to solve the above-mentioned problems, in the wireless line control system of the present invention, the wireless zones provided by the wireless base stations overlap each other, and in the wireless zone, between the wireless base station and the mobile station. A wireless line control system for controlling the use state of the sharable frequency among a plurality of mobile communication systems each having a frequency sharable with respect to the frequency used for the wireless communication of It is characterized by comprising an acquisition means for acquiring communication traffic, and a control means for controlling the use state of the sharable frequency based on the communication traffic acquired by the acquisition means.

By preparing a frequency that can be shared between a plurality of mobile communication systems, acquiring communication traffic in the wireless zone, and controlling the use state of the frequency that can be shared based on the acquired communication traffic. , According to the communication traffic of each of the plurality of mobile communication systems,
The sharable frequency can be adaptively used by each of a plurality of mobile communication systems.

In order to solve the above-mentioned problems, in the wireless line control method of the present invention, the wireless zones provided by the wireless base stations overlap each other, and the wireless base station and the mobile station are located in the wireless zone. A wireless link control method for controlling the use state of the sharable frequency among a plurality of mobile communication systems in which frequencies that can be shared with each other are provided for the frequencies used for the wireless communication of In the system, a first acquisition step of acquiring communication traffic of the wireless zone, and when the communication traffic acquired in the first acquisition step is a predetermined amount or more, a frequency that can be shared by the one mobile communication system is set. Compared to other mobile communication systems in use, the sharable frequency of the one mobile communication system Request step for requesting communication, a second acquisition step for acquiring communication traffic in the wireless zone in the other mobile communication system, and a communication acquired in the second acquisition step in response to the request in the request step. If the traffic is less than a predetermined amount, the wireless communication using the sharable frequency in the other mobile communication system is stopped, the transmission of radio waves of the sharable frequency is stopped, and the other mobile communication system is A permitting step for permitting the use of the sharable frequency to the one mobile communication system.

In order to solve the above-mentioned problems, in the wireless line control system of the present invention, the wireless zones provided by the wireless base stations overlap each other, and in the wireless zone, between the wireless base station and the mobile station. A wireless line control system for controlling the use state of the sharable frequency among a plurality of mobile communication systems in which frequencies that can be shared with each other are prepared for the frequencies used in the wireless communication of First acquisition means provided in the system for acquiring communication traffic of the wireless zone in the one mobile communication system, and communication traffic acquired in the first acquisition means provided in the one mobile communication system Is greater than or equal to a predetermined amount, the transfer of the one to another mobile communication system using the sharable frequency is performed. Requesting means for requesting use of the sharable frequency in the communication system, and second acquiring means provided in the other mobile communication system for acquiring communication traffic of the wireless zone in the other mobile communication system, When the communication traffic acquired by the second acquisition means is less than a predetermined amount in response to a request from the request means of the one mobile communication system, the other mobile communication system is provided. Permission to stop radio communication using the sharable frequency in the communication system, stop transmission of radio waves of the sharable frequency, and allow the one mobile communication system to use the sharable frequency And means are provided.

In this case, the radio line control station which constitutes the radio line control system is provided in the one mobile communication system, and an obtaining means for obtaining the communication traffic of the radio zone in the one mobile communication system, When the communication traffic acquired by the acquisition means is equal to or more than a predetermined amount, another mobile communication system using a sharable frequency is requested to use the sharable frequency in the one mobile communication system. It is characterized in that it is provided with a request means to do.

Further, another radio line control station constituting the radio line control system is provided in the other mobile communication system, and an acquisition means for acquiring communication traffic of the radio zone in the other mobile communication system. When the communication traffic acquired by the acquisition means is less than a predetermined amount in response to a request from the one mobile communication system to use the sharable frequency, the sharable frequency in the other mobile communication system. And a permitting means for permitting the one mobile communication system to use the sharable frequency by stopping the radio communication using the sharable radio wave, stopping the transmission of the radio wave of the sharable frequency. I am trying.

A frequency that can be shared by a plurality of mobile communication systems is prepared, and another mobile communication system that uses the frequency that can be shared when the communication traffic of one mobile communication system is a predetermined amount or more. Requesting the use of a sharable frequency to the other mobile communication system, and when the other communication traffic is less than a predetermined amount, stop wireless communication using the sharable frequency in the other mobile communication system, By stopping the transmission of radio waves and allowing the one mobile communication system to use the sharable frequency, the authority to use the sharable frequency is given from the other mobile communication system having relatively small communication traffic. The mobile communication system can be transferred to the one mobile communication system having relatively large communication traffic.

Further, in order to solve the above-mentioned problem, in the wireless line control method of the present invention, the wireless zones provided by the wireless base stations overlap each other, and in the wireless zone, between the wireless base station and the mobile station. A wireless line control method for controlling the use state of the sharable frequency between a plurality of mobile communication systems each having a frequency sharable with each other used for the radio communication, In each of the communication systems, a priority order regarding the use of the sharable frequency is set, and in the first acquisition step of acquiring the communication traffic of the wireless zone in the one mobile communication system, and the first acquisition step. If the acquired communication traffic is more than a predetermined amount, it can be shared from the above-mentioned one mobile communication system. A request step for requesting the use of the sharable frequency in the one mobile communication system to another mobile communication system using another frequency, and the one mobile communication system according to the request in the request step. If the priority of is higher than the priority of the other mobile communication system, wireless communication using the sharable frequency is stopped in the other mobile communication system, and transmission of radio waves of the sharable frequency is stopped. However, the other mobile communication system further comprises a permit step of permitting the one mobile communication system to use the sharable frequency.

Further, in order to solve the above-mentioned problems, in the wireless line control system of the present invention, the wireless zones provided by the wireless base stations overlap each other, and between the wireless base station and the mobile station in the wireless zone. There is a wireless line control system for controlling the use state of the sharable frequency between a plurality of mobile communication systems each having a frequency sharable with each other used for the wireless communication of For each system, the priority order regarding the use of the above-mentioned sharable frequency is defined, and it is provided in one mobile communication system.
First acquisition means for acquiring communication traffic in the wireless zone in the one mobile communication system, and communication traffic acquired in the first mobile communication system, the communication traffic being acquired by the first acquisition means are equal to or more than a predetermined amount. If there is
Requesting means for requesting the use of the sharable frequency in the one mobile communication system to another mobile communication system using the sharable frequency, and the request means provided in the other mobile communication system. When the priority of the one mobile communication system is higher than the priority of the other mobile communication system in response to the request from the requesting means of the mobile communication system, the sharable frequency in the other mobile communication system And a permitting means for permitting the one mobile communication system to use the sharable frequency by stopping the radio communication using the sharable radio wave, stopping the transmission of the radio wave of the sharable frequency. I am trying.

[0016] In this case, the radio network controller which constitutes the radio network control system is provided in the one mobile communication system, and an acquisition unit for acquiring communication traffic of the radio zone in the one mobile communication system, When the communication traffic acquired by the acquisition means is equal to or more than a predetermined amount, another mobile communication system using a sharable frequency is requested to use the sharable frequency in the one mobile communication system. It is characterized in that it is provided with a request means to do.

Further, another radio line control station forming the radio line control system is provided in the other mobile communication system, and responds to a request from the one mobile communication system to use the sharable frequency. If the priority of the one mobile communication system is higher than the priority of the other mobile communication system, wireless communication using the sharable frequency in the other mobile communication system is stopped and the sharable And a permitting means for suspending the transmission of the radio wave of the frequency and permitting the one mobile communication system to use the sharable frequency.

A frequency that can be shared by a plurality of mobile communication systems is prepared, and another mobile communication system that uses the frequency that can be shared when the communication traffic of one mobile communication system is a predetermined amount or more. Requesting the use of a sharable frequency to the mobile communication system and using a sharable frequency in another mobile communication system when the priority of the one mobile communication system is higher than the priority of the other mobile communication system. By suspending wireless communication, stopping transmission of radio waves of sharable frequencies, and permitting the use of sharable frequencies for the above-mentioned one mobile communication system, the authority to use sharable frequencies is given priority. It is possible to move from the other mobile communication system having a low priority to the one mobile communication system having a high priority and relatively high communication traffic.

Further, the above wireless line control method further comprises a second acquisition step of acquiring communication traffic of the above wireless zone in the other mobile communication system, and the permitting step responds to the request in the requesting step. , The priority of the one mobile communication system is equal to or lower than the priority of the other mobile communication system, and the communication traffic acquired in the second acquisition step is less than a predetermined amount. In this case, the wireless communication using the sharable frequency in the other mobile communication system is stopped, the transmission of radio waves of the sharable frequency is stopped, and the other mobile communication system becomes the one mobile communication system. On the other hand, it is preferable that the use of the sharable frequency is allowed.

Further, in the above radio line control system, the mobile communication system is further provided in the other mobile communication system, and further comprises a second obtaining means for obtaining the communication traffic of the radio zone in the other mobile communication system. The permitting means of the mobile communication system according to the request from the requesting means of the one mobile communication system, the priority of the one mobile communication system is equal to or lower than the priority of the other mobile communication systems. In the case where the communication traffic acquired by the second acquisition means is less than a predetermined amount, wireless communication using the sharable frequency in the other mobile communication system is stopped and the sharing is performed. A feature that the transmission of radio waves of possible frequencies is stopped and the use of the sharable frequency is allowed for the one mobile communication system. It is preferable to.

[0021] In this case, the another radio line control station constituting the radio line control system further comprises an acquisition means for acquiring the communication traffic of the radio zone in the other mobile communication system, and the admission means, In response to a request from the one mobile communication system to use the sharable frequency, the priority of the one mobile communication system is equal to or lower than the priority of the other mobile communication system, and When the communication traffic acquired by the acquisition means is less than a predetermined amount, wireless communication using the sharable frequency in the other mobile communication system is stopped, and transmission of radio waves of the sharable frequency is stopped. However, it is preferable that the one mobile communication system is allowed to use the sharable frequency.

When the priority of one mobile communication system is equal to or lower than the priority of another mobile communication system and the communication traffic of the other mobile communication system is less than a predetermined amount, Stopping radio communication using a sharable frequency in another mobile communication system, stopping transmission of radio waves of a sharable frequency, and permitting use of the sharable frequency by the one mobile communication system. Then, the authority to use the sharable frequency can be transferred from the other mobile communication system having high priority but low communication traffic to the one mobile communication system having low priority but high communication traffic. .

Further, in order to solve the above-mentioned problems, in the wireless line control method of the present invention, the wireless zones provided by the wireless base stations overlap each other, and in the wireless zone, between the wireless base station and the mobile station. A wireless line control method for controlling the use state of the sharable frequency between a plurality of mobile communication systems each having a frequency sharable with each other used for the radio communication, An acquisition step of acquiring communication traffic of the wireless zone in each of the communication systems; a notification step of notifying the communication traffic acquired in the acquisition step to the main mobile communication system from each of the plurality of mobile communication systems; Based on the communication traffic notified in the step, the above-mentioned master When the mobile communication system having the largest communication traffic extracts the mobile communication system having the largest communication traffic and the mobile communication system using the sharable frequency is different from the mobile communication system having the largest communication traffic, The communication system stops radio communication using the sharable frequency in the mobile communication system using the sharable frequency, stops transmission of radio waves of the sharable frequency, and eliminates most of the communication traffic. A permitting step of permitting the use of the sharable frequency for a large mobile communication system.

In order to solve the above-mentioned problems, in the wireless line control system of the present invention, the wireless zones provided by the wireless base stations overlap each other, and in the wireless zone, between the wireless base station and the mobile station. A wireless line control system for controlling the use state of the sharable frequency between a plurality of mobile communication systems in which frequencies that can be shared with each other are prepared for the frequencies used for the wireless communication of Acquiring means provided in each of the communication systems to acquire communication traffic of the wireless zone in each of the plurality of mobile communication systems, and communication traffic acquired in each of the plurality of mobile communication systems and acquired by the acquiring means are the masters. Notification means for notifying the mobile communication system that becomes the main mobile communication system. The mobile communication system having the largest communication traffic is extracted based on the communication traffic provided in the system and notified from the notification means of each of the plurality of mobile communication systems, and is shared with the mobile communication system having the largest communication traffic. When the mobile communication system using a possible frequency is different, the wireless communication using the sharable frequency in the mobile communication system using the sharable frequency is stopped,
And a permitting means for stopping the transmission of the radio wave of the sharable frequency and permitting the mobile communication system having the largest communication traffic to use the sharable frequency.

In this case, the radio line control station which constitutes the radio line control system is provided in the one mobile communication system, and an obtaining means for obtaining the communication traffic of the radio zone in the one mobile communication system, And a notification unit for notifying the mobile communication system, which is the main trunk, of the communication traffic acquired by the acquisition unit.

Further, another radio line control station constituting the above radio line control system is provided in the main mobile communication system, and in each of the plurality of mobile communication systems notified from each of the plurality of mobile communication systems. Based on the communication traffic of the wireless zone, the mobile communication system having the largest communication traffic is extracted, and the mobile communication system having the largest communication traffic and the mobile communication system using the sharable frequency are different, In the mobile communication system using the sharable frequency, the wireless communication using the sharable frequency is stopped, the transmission of the radio wave of the sharable frequency is stopped, and the mobile communication system with the largest communication traffic is To allow the use of the above-mentioned sharable frequency It is characterized by a door.

A frequency that can be shared by a plurality of mobile communication systems is prepared, the communication traffic of each of the plurality of mobile communication systems is notified to the main mobile communication system, and shared with the mobile communication system having the largest communication traffic. When the mobile communication system that uses the available frequency is different, the main mobile communication system stops wireless communication using the shareable frequency in the mobile communication system that uses the shareable frequency. By stopping the transmission of radio waves of the sharable frequency and allowing the use of the sharable frequency to the mobile communication system with the largest communication traffic, the authority to use the sharable frequency is set to the maximum level of the communication traffic. It can be moved to a large mobile communication system. Further, in mobile communication systems other than the main mobile communication system, the communication traffic of the own mobile communication system only needs to be notified to the main mobile communication system, which simplifies the configuration of the radio network controller.

Further, in order to solve the above-mentioned problems, in the wireless line control method of the present invention, the wireless zones provided by the wireless base stations overlap each other, and in the wireless zone, between the wireless base station and the mobile station. A wireless line control method for controlling the use state of the sharable frequency between a plurality of mobile communication systems each having a frequency sharable with each other used for the radio communication, For each communication system, a priority regarding the use of the sharable frequency and a threshold regarding communication traffic are defined, and an acquisition step of acquiring communication traffic of the wireless zone in each of the plurality of mobile communication systems, The communication traffic acquired in the acquisition step is transferred to the plurality of mobile communication systems. A notification step of notifying the mobile communication system serving as the trunk from each system, and the mobile communication system serving as the trunk based on the communication traffic notified in the notification step, the mobile communication in which the communication traffic is equal to or more than the threshold value. A mobile communication system that extracts a system, extracts a mobile communication system with the highest priority from the extracted mobile communication systems, and uses the frequency that can be shared with the mobile communication system with the highest priority. , The main mobile communication system stops radio communication using the sharable frequency in the mobile communication system using the sharable frequency, and Transmission is stopped, and the sharable frequency is used for the mobile communication system with the highest priority. It is characterized in that a tolerance step which permits the use of.

In order to solve the above-mentioned problems, in the wireless line control system of the present invention, the wireless zones provided by the wireless base stations overlap each other, and the wireless base station and the mobile station are located in the wireless zone. A wireless line control system for controlling the use state of the sharable frequency between a plurality of mobile communication systems in which frequencies that can be shared with each other are prepared for the frequencies used for the wireless communication of For each communication system, the priority regarding the use of the sharable frequency and the threshold regarding the communication traffic are defined, and provided for each of the plurality of mobile communication systems,
Acquisition means for acquiring communication traffic of the wireless zone in each of the plurality of mobile communication systems, and notification of communication traffic acquired by the acquisition means to the main mobile communication system provided in each of the plurality of mobile communication systems And a mobile communication system provided in the main mobile communication system, the communication traffic of which is greater than or equal to the threshold value based on the communication traffic notified from the notification means of each of the plurality of mobile communication systems. And a mobile communication system having the highest priority from among the extracted mobile communication systems, and a mobile communication system using the sharable frequency with the mobile communication system having the highest priority. , The mobile communication system using the sharable frequency , The wireless communication using the sharable frequency is stopped, the transmission of the radio wave of the sharable frequency is stopped, and the mobile communication system with the highest priority is allowed to use the sharable frequency. It is characterized by having a permitting means.

In this case, the radio line control station constituting the radio line control system is provided in the one mobile communication system, and an obtaining means for obtaining the communication traffic of the radio zone in the one mobile communication system, And a notification unit for notifying the mobile communication system, which is the main trunk, of the communication traffic acquired by the acquisition unit.

Further, another radio line control station constituting the radio line control system is provided in the main mobile communication system, and each of the plurality of mobile communication systems notified from each of the plurality of mobile communication systems. Based on the communication traffic of the wireless zone in, to extract the mobile communication system communication traffic is equal to or more than the threshold value, and extracts the highest priority mobile communication system from the extracted mobile communication system, If the mobile communication system having the highest priority and the mobile communication system using the sharable frequency are different, the sharable frequency in the mobile communication system using the sharable frequency is used. The wireless communication is stopped, the transmission of radio waves of the above-mentioned frequency that can be shared is stopped, and the priority of the above is set. It is characterized by having a tolerance means for allowing the use of the sharable frequencies for high mobile communication systems.

A frequency that can be shared by a plurality of mobile communication systems is prepared, the communication traffic of each of the plurality of mobile communication systems is notified to the main mobile communication system, and the mobile traffic in which the communication traffic exceeds a threshold value When the mobile communication system having the highest priority among the communication systems and the mobile communication system using the sharable frequency are different, the mobile communication system serving as the main trunk is the mobile communication using the sharable frequency. By stopping the wireless communication using the sharable frequency in the system, stopping the transmission of radio waves of the sharable frequency, and allowing the use of the sharable frequency to the mobile communication system with the highest priority above. , It is possible to transfer the authority to use the sharable frequency to the mobile communication system in which the communication traffic is relatively large and the priority is high. That. Further, in mobile communication systems other than the main mobile communication system, the communication traffic of the own mobile communication system only needs to be notified to the main mobile communication system, which simplifies the configuration of the radio network controller.

Further, in order to solve the above-mentioned problems, in the wireless line control method of the present invention, the wireless zones provided by the wireless base stations overlap each other, and the wireless base station and the mobile station are located in the wireless zone. A wireless link control method for controlling the use state of the sharable frequency among a plurality of mobile communication systems in which frequencies that can be shared with each other are provided for the frequencies used for the wireless communication of A first acquisition step of acquiring communication traffic of the wireless zone in the system;
Use of the sharable frequency in the one mobile communication system from the one mobile communication system to the main mobile communication system when the communication traffic acquired in the first acquisition step is a predetermined amount or more In response to the request in the first request step and the request in the first request step, with respect to another mobile communication system using a frequency that can be shared by the mobile communication system serving as the master, A second requesting step of requesting the use of the sharable frequency in the communication system, a second acquiring step of acquiring the communication traffic of the wireless zone in the other mobile communication system, and a second acquiring step. When the acquired communication traffic is less than a predetermined amount, the above-mentioned sharing in the other mobile communication system An allowable step of stopping wireless communication using an available frequency, stopping transmission of radio waves of the sharable frequency, and allowing the mobile communication system to use the sharable frequency. It is characterized by that.

In order to solve the above-mentioned problems, in the wireless line control system of the present invention, the wireless zones provided by the wireless base stations overlap each other, and the wireless base station and the mobile station are located in the wireless zone. A wireless line control system for controlling the use state of the sharable frequency among a plurality of mobile communication systems in which frequencies that can be shared with each other are prepared for the frequencies used in the wireless communication of First acquisition means provided in the system for acquiring communication traffic of the wireless zone in the one mobile communication system, and communication traffic acquired in the first mobile communication system and acquired by the first acquisition means Is greater than or equal to a predetermined amount, the mobile communication system that is the main A first requesting means for requesting the use of a sharable frequency and a sharable frequency provided in the main mobile communication system in response to a request from the first requesting means of the one mobile communication system. Second requesting means for requesting use of the sharable frequency in the one mobile communication system to another mobile communication system using the above, and another mobile communication system provided in the other mobile communication system. Second acquisition means for acquiring communication traffic of the wireless zone in the mobile communication system, and the second request means of the mobile communication system, which is provided in the other mobile communication system and is the main trunk, in response to a request from the second request means, When the communication traffic acquired by the second acquisition means is less than a predetermined amount, it is determined that the sharable frequency in the other mobile communication system is not used. Stop the communication,
And a permitting means for stopping the transmission of the radio wave of the sharable frequency and permitting the one mobile communication system to use the sharable frequency.

In this case, the radio line control station which constitutes the radio line control system is provided in the one mobile communication system, and an obtaining means for obtaining the communication traffic of the radio zone in the one mobile communication system, When the communication traffic acquired by the acquisition means is a predetermined amount or more, requesting means for requesting the core mobile communication system to use the sharable frequency in the one mobile communication system is provided. Is characterized by.

Further, another radio line control station constituting the radio line control system is provided in the main mobile communication system, and responds to a request from one mobile communication system to use the sharable frequency. , A requesting means for requesting the use of the sharable frequency in the one mobile communication system to another mobile communication system using the sharable frequency.

Still another radio line control station constituting the above radio line control system is provided in the other mobile communication system and obtains the communication traffic of the radio zone in the other mobile communication system. When,
When the communication traffic acquired by the acquisition means is less than a predetermined amount in response to a request for use of the sharable frequency in the one mobile communication system transmitted from the main mobile communication system, the other mobile Stop wireless communication using the sharable frequency in the communication system, stop sending radio waves of the sharable frequency,
And a permitting unit that permits the use of the sharable frequency to the one mobile communication system.

A frequency that can be shared by a plurality of mobile communication systems is prepared, and when the communication traffic of the one mobile communication system is a predetermined amount or more, the one mobile communication system becomes the main mobile communication system. Requesting the use of a sharable frequency, further requesting the use of the sharable frequency from the main mobile communication system to another mobile communication system using the sharable frequency, When the communication traffic is less than a predetermined amount, the wireless communication using the sharable frequency in the other mobile communication system is stopped, the transmission of the radio wave of the sharable frequency is stopped, and the one mobile communication system is By allowing the use of the frequency that can be shared by the mobile communication system, the authority to use the frequency that can be shared is changed to the mobile communication system other than the above-mentioned mobile communication systems with relatively small communication traffic. It can be transferred to larger the one of the mobile communication system of the communication traffic from. Also,
By requesting the use of the sharable frequency to another mobile communication system via the main mobile communication system, the main trunk is compared with the case of directly requesting the use of the sharable frequency to another mobile communication system. It is possible to simplify the configuration of the radio network controller of the mobile communication system other than the mobile communication system. On the other hand, as compared with the case where the main mobile communication system collects the communication traffic of each of the plurality of mobile communication systems, the radio channel control station of the main mobile communication system can be configured simply.

Further, in order to solve the above-mentioned problems, in the wireless line control method of the present invention, the wireless zones provided by the wireless base stations overlap each other, and in the wireless zone, between the wireless base station and the mobile station. A wireless line control method for controlling the use state of the sharable frequency between a plurality of mobile communication systems each having a frequency sharable with each other used for the radio communication, For each communication system, a priority order regarding the use of the sharable frequency is defined, and an acquisition step of acquiring the communication traffic of the wireless zone in one mobile communication system, and the communication traffic acquired in the acquisition step are When the amount is a predetermined amount or more, the mobile communication from the above-mentioned one mobile communication system becomes the main communication The request step for requesting the system to use the sharable frequency in the one mobile communication system, and the priority of the one mobile communication system uses the sharable frequency in response to the request in the request step. If the priority is higher than the priority of the other mobile communication system in use, the master mobile communication system stops the wireless communication using the sharable frequency in the other mobile communication system, and the sharable And a permit step for permitting the one mobile communication system to use the sharable frequency.

In order to solve the above-mentioned problems, in the wireless line control system of the present invention, the wireless zones provided by the wireless base stations overlap each other, and the wireless base station and the mobile station are located in the wireless zone. A wireless line control system for controlling the use state of the sharable frequency between a plurality of mobile communication systems in which frequencies that can be shared with each other are prepared for the frequencies used for the wireless communication of For each communication system, the priority order regarding the use of the sharable frequency is determined, the acquisition means is provided in one mobile communication system, and acquires the communication traffic of the wireless zone in the one mobile communication system, Communication traffic acquired by the acquisition means provided in the one mobile communication system When the amount is equal to or more than a predetermined amount, request means for requesting the master mobile communication system to use the sharable frequency in the one mobile communication system, and the mobile communication system serving as the master, are provided with the request means. When the priority of the one mobile communication system is higher than the priority of another mobile communication system using the sharable frequency in response to a request from the requesting means of the mobile communication system of Stop wireless communication using the sharable frequency in the mobile communication system,
It is characterized by further comprising permitting means for stopping the transmission of the radio wave of the sharable frequency and permitting the one mobile communication system to use the sharable frequency.

In this case, the radio line control station which constitutes the radio line control system is provided in the one mobile communication system, and an obtaining means for obtaining the communication traffic of the radio zone in the one mobile communication system, When the communication traffic acquired by the acquisition means is a predetermined amount or more, requesting means for requesting the use of the sharable frequency in the one mobile communication system to the main mobile communication system is provided. Is characterized by.

Further, another radio line control station constituting the radio line control system is provided in the main mobile communication system, and responds to a request from one mobile communication system to use the sharable frequency. If the priority of the one mobile communication system is higher than the priority of another mobile communication system using the sharable frequency, radio using the sharable frequency in the other mobile communication system It is characterized in that the communication means is stopped, the transmission of the radio wave of the sharable frequency is stopped, and the one mobile communication system is provided with a permitting means for permitting the use of the sharable frequency.

A frequency that can be shared by a plurality of mobile communication systems is prepared, and when the communication traffic of the one mobile communication system is a predetermined amount or more, the one mobile communication system becomes the main mobile communication system. In the case where a request is made to use a sharable frequency for the mobile communication system, and the priority of the one mobile communication system is higher than the priority of another mobile communication system using the sharable frequency, the main move The communication system stops radio communication using the sharable frequency in the other mobile communication system, stops transmission of radio waves of the sharable frequency, and uses the sharable frequency for the one mobile communication system. By permitting the use of the sharable frequency, the authority to use the sharable frequency is given to the mobile communication system having a high priority from the other mobile communication systems having a low priority and the communication traffic having a relatively high priority. It can be transferred to hear the one of the mobile communication system. In addition, by requesting the use of the sharable frequency to another mobile communication system via the main mobile communication system, compared with the case of directly requesting the use of the sharable frequency to another mobile communication system. It is possible to simplify the configuration of the radio network controller of the mobile communication system other than the main mobile communication system. On the other hand, compared to the case where the main mobile communication system collects the communication traffic of each of the plurality of mobile communication systems, the radio network controller of the main mobile communication system can have a simple configuration.

Further, in the above wireless line control method, wireless communication using the sharable frequency is stopped,
When stopping the transmission of radio waves of the above-mentioned frequency that can be shared,
Switching a call in communication on the sharable frequency to a channel of another frequency, and stopping the transmission of the radio wave of the sharable frequency after there is no call in communication on the sharable frequency. Is preferred.

In the wireless line control system, the wireless communication using the sharable frequency is stopped,
When stopping the transmission of radio waves of the above-mentioned frequency that can be shared,
Switching a call in communication on the sharable frequency to a channel of another frequency, and stopping the transmission of the radio wave of the sharable frequency after there is no call in communication on the sharable frequency. Is preferred.

In this case, the radio line control station constituting the radio line control system stops the radio communication using the sharable frequency and stops the transmission of the radio wave of the sharable frequency when the radio wave is shared. Characterized by switching a call in communication at a frequency that can be used to a channel of another frequency, and stopping transmission of radio waves at the frequency that can be used after a call that is in communication at the frequency that can be used does not exist I am trying.

At the time of stopping the radio communication using the sharable frequency and stopping the transmission of the radio wave of the sharable frequency,
It is also conceivable to forcibly disconnect the call being communicated on the sharable frequency. However, by switching the call in communication on the sharable frequency to a channel on another frequency and stopping the transmission of the radio wave on the sharable frequency after the call in communication on the sharable frequency disappears. , A call in communication on a sharable frequency can continue communication.

Further, in the above wireless line control method, a plurality of sharable frequencies are prepared, and when allowing the use of the sharable frequencies, a call during communication is selected from the plurality of sharable frequencies. It is preferable that the number of sharable frequencies is small and preferentially permitted.

In the wireless line control system, a plurality of sharable frequencies are prepared, and when permitting the use of the sharable frequencies, a call during communication is selected from the plurality of sharable frequencies. It is preferable that the number of sharable frequencies is small and preferentially permitted.

In this case, when allowing the use of the sharable frequency, the radio circuit controlling station constituting the above-mentioned radio circuit control system has a small number of calls in communication among the plurality of sharable frequencies. The feature is that priority is given to frequencies that can be shared.

In allowing the use of the sharable frequency, the sharable frequency having a smaller number of calls in communication is preferentially permitted from a plurality of sharable frequencies,
It is possible to reduce the processing for forcibly disconnecting the call during communication or switching the channel to another frequency channel, and the processing for stopping the wireless communication using the sharable frequency becomes easy.

Further, in the above-mentioned radio line control method, each of the plurality of mobile communication systems preferentially allocates a channel to a generated call from a channel of a frequency that cannot be shared with each other. Is preferred.

Further, in the above-mentioned radio line control system, each of the plurality of mobile communication systems preferentially allocates a channel to a generated call from a channel of a frequency that cannot be shared with each other. Is preferred.

In this case, the radio line control station constituting the radio line control system is characterized by preferentially allocating channels having frequencies that are not sharable to each other when allocating a channel to a generated call.

When allocating a channel to a generated call, channels having frequencies that are not sharable with each other are preferentially allocated, so that it is possible to reduce the processing for changing the subject of use of the sharable frequency.

[0056]

BEST MODE FOR CARRYING OUT THE INVENTION (Mobile Communication System Using Radio Channel Control System) First, a mobile communication system using the radio channel control system of the present invention will be described. FIG. 1 is a configuration diagram of a mobile communication system. In the wireless line control system of the present invention, the wireless zones provided by the wireless base stations overlap each other, and the frequencies used for wireless communication between the wireless base station and the mobile station in the wireless zone can be shared with each other (hereinafter , Shared frequency) is used to control the usage state of the shared frequency among the plurality of mobile communication systems.

More specifically, the radio channel control system of the present invention is used, for example, to control the usage state of the shared frequency between the mobile communication system A and the mobile communication system B shown in FIG. As shown in FIG. 1, the mobile communication system A includes a plurality of exchanges 10A and a radio network controller 20A connected to each of the plurality of exchanges 10A,
It is configured to include one or a plurality of radio base stations 30A provided under the control of each of the plurality of radio line control stations 20A.

FIG. 2 is a block diagram of the radio network controller 20A. As shown in FIG. 2, the wireless line control station 20A includes a control unit 22, an information storage unit 24, and a communication unit 26. The control unit 22 manages frequencies used for wireless communication with the mobile station 40, assigns channels, and the like. The information storage unit 24 includes a mobile station 40 and a radio base station 30.
A, various information regarding the radio network controller 20A, various threshold values and timer values used in the radio network controller 20A, etc. are stored. The communication unit 26 is the exchange 10A.
And communicates with the wireless base station 30A. Furthermore, the control unit 2
2 can transmit / receive information to / from a radio line control station of another mobile communication system (for example, a radio line control station 20B of the mobile communication system B) directly or via the communication unit 26 and the exchange 10A. There is.

FIG. 3 is a block diagram of the radio base station 30A. The radio base station 30A includes a control unit 32 and an information storage unit 3
4, a communication unit 36, and a modulation / demodulation unit 38. The control unit 36 generates a signal to be transmitted to the radio network controller 20A, a signal to be transmitted to the mobile station 40, and the like. The information storage unit 34 stores various information regarding the mobile station 40, the radio base station 30A, the radio network controller 20A, and the radio base station 30.
It stores various threshold values and timer values used in A. The communication unit 36 communicates with the radio network controller 20A and the mobile station 40. Here, when data is transmitted to the mobile station 40, the data output from the communication unit 36 is modulated by the modulation / demodulation unit 38 and then transmitted to the mobile station 40, and when data is received from the mobile station 40, the mobile station 40 moves. Station 4
The data transmitted from 0 is demodulated by the modulation / demodulation unit 38 and then input to the communication unit 36.

Returning to FIG. 1, similarly to the mobile communication system A, the mobile communication system B also has a plurality of exchanges 10B, a radio network controller 20B connected to each of the plurality of exchanges 10B, and a plurality of radios. It is configured to include one or a plurality of radio base stations 30B provided under the respective line control stations 20B. In addition, the wireless line control station 20B is shown in FIG.
The wireless base station 30B has the same configuration as the wireless base station 20A described with reference to FIG. 3, and the wireless base station 30B has the same configuration as the wireless base station 30A described with reference to FIG.

At least a part of the service area of the mobile communication system A and the service area of the mobile communication system B overlap each other. More specifically, for example, the wireless zone of the wireless base station 30A of the mobile communication system A and the wireless zone of the wireless base station 30B of the mobile communication system B at least partially overlap (see FIG. 1). The dotted area AB). In addition, for each of the above-mentioned radio zones, a shared frequency that allows the mobile communication system A and the mobile communication system B to share each other is prepared.

Here, as a mobile communication system in which the radio line control system of the present invention is used, as shown in FIG. 1, two mobile communication systems A and B have radio zones that overlap each other. The case where the shared frequency is prepared for the wireless zones of No. 2 has been described as an example. This is, for example, as shown in FIG. 4, a wireless zone in which three mobile communication systems A, B and M overlap each other (see FIG. Part ABM) with dots
It may be a case where a shared frequency is prepared for these wireless zones. Similarly, it may be the case where four or more mobile communication systems have radio zones that overlap each other and a shared frequency is prepared for these radio zones.

Here, as shown in FIG. 1, a case where the radio zone of the radio base station 30A of the mobile communication system A and the radio zone of the radio base station 30B of the mobile communication system B overlap each other will be described. Although described as an example, it does not exclude that the radio zones of other radio base stations of the mobile communication system A and the radio zones of other radio base stations of the mobile communication system B overlap each other.

(Basic Structure) In the wireless line control method and wireless line control system of the present invention, basically, the wireless zones provided by the wireless base stations are overlapped with each other, and the wireless base stations and the wireless base stations are provided in the wireless zones. Regarding frequencies used for wireless communication with mobile stations, between each of a plurality of mobile communication systems in which a shared frequency is prepared, when controlling the usage state of the shared frequency, the communication traffic of the wireless zone is acquired, and The usage state of the shared frequency is controlled based on the acquired communication traffic. Hereinafter, various embodiments will be specifically described.

(First Embodiment) A radio line control system according to the first embodiment of the present invention will be described with reference to the drawings. The wireless line control system according to the present embodiment includes the wireless line control station according to the embodiment of the present invention.

As shown in FIG. 1, the radio line control system according to the present embodiment has two mobile communication systems A, which have radio zones overlapping with each other and are provided with a shared frequency for these radio zones. It is used to control the usage state of the shared frequency between the respective Bs.

First, the configuration of the wireless line control system according to this embodiment will be described. The wireless line control system according to this embodiment includes a wireless line control station 20A of a mobile communication system A and a wireless line control station 20B of a mobile communication system B.

Radio link control station 20 of mobile communication system A
Basically, A has the configuration already described with reference to FIG. Here, the control unit 22 of the radio network controller 20A
Further uses a function of acquiring communication traffic in a wireless zone provided by the wireless base station 30A of the mobile communication system A, and uses a shared frequency when the acquired communication traffic is equal to or higher than a predetermined threshold. The mobile communication system B has a function of requesting use of the shared frequency in the mobile communication system A.

Radio link control station 20 of mobile communication system B
B also basically has the configuration already described with reference to FIG. Here, the control unit 22 of the radio network controller 20B
Is a function of acquiring communication traffic in a wireless zone provided by the wireless base station 30B of the mobile communication system B, and the acquired communication traffic is predetermined according to a request from the mobile communication system A to use the shared frequency. If it is less than the threshold value of, the radio base station 3 of the mobile communication system B
It has a function of stopping the radio communication using the shared frequency in 0B, stopping the transmission of the radio wave of the shared frequency, and allowing the mobile communication system A to use the shared frequency.

The operation of the wireless channel control system according to this embodiment will be described below in detail, and the wireless channel control method according to the embodiment of the present invention will be described.
FIG. 5 is a flowchart showing the operation of the wireless line control system according to the present embodiment.

First, it is assumed that the radio network controller 20B of the mobile communication system B is using a shared frequency (hereinafter referred to as a shared frequency operating state). In this case, in order to prevent radio wave interference, the radio network controller 20A of the mobile communication system A is in a state where the use of the shared frequency is prohibited (hereinafter referred to as the shared frequency operation prohibited state).

In this state, in the radio network controller 20A of the mobile communication system A, at regular intervals, that is, each time the communication traffic determination timer times out (S1
02), a radio base station 30 under the control of the radio network controller 20A
The communication traffic in the wireless zone provided by A is acquired (S104), and the communication traffic is compared with the threshold value (S106). Here, the timer value of the communication traffic determination timer and the threshold value are determined in advance and stored in the information storage unit 24 of the radio network controller 20A.

As a result of the comparison of the communication traffic with the threshold value, if the communication traffic is equal to or higher than the threshold value, the radio network controller 20A of the mobile communication system A sends the mobile communication system B using the shared frequency. A shared frequency operation inquiry requesting the use of the shared frequency in the mobile communication system A is transmitted to the radio network controller 20B (S108). Here, the information regarding the mobile communication system using the shared frequency (here, the mobile communication system B) is acquired in advance and stored in the information storage unit 24 of the radio network controller 20A.

In the radio link control station 20B of the mobile communication system B which has received the shared frequency operation inquiry, the communication traffic of the radio zone provided by the radio base station 30B under the control of the radio link control station 20B is acquired, and the communication traffic concerned is acquired. Is compared with a threshold value (S110). Here, the threshold value is determined in advance and stored in the information storage unit 24 of the radio network controller 20B.

As a result of the comparison of the communication traffic with the threshold value, if the communication traffic is equal to or higher than the threshold value, as a response to the shared frequency operation inquiry, from the radio network controller 20B of the mobile communication system B to the mobile communication system. A shared frequency operation inquiry response (not possible) indicating that the use of the shared frequency in the mobile communication system A is not permitted is transmitted to the radio network controller 20A of A (S11).
2), the process ends.

On the other hand, when the communication traffic is smaller than the threshold value, the radio network controller 20B of the mobile communication system B is used.
The wireless communication using the shared frequency in the wireless base station 30B under the control is stopped, and the transmission of the radio wave of the shared frequency is stopped (S118). At this point, the radio network controller 20B of the mobile communication system B enters the shared frequency operation prohibited state.

Here, when the wireless communication using the shared frequency is stopped and the transmission of the radio wave of the shared frequency is stopped,
First, it is determined whether there is a call in communication on the shared frequency (S114), and if there is a call in communication on the shared frequency, these calls are switched to a channel of another frequency (S116). , The transmission of the radio wave of the shared frequency is stopped after there is no call in communication on the shared frequency. Stop wireless communication using the shared frequency,
When the transmission of the radio wave of the shared frequency is stopped, it is possible that the call being communicated on the shared frequency is forcibly disconnected. However, as described above, by switching the call in communication on the shared frequency to a channel of another frequency and stopping the transmission of the radio wave of the shared frequency after the call on the shared frequency is no longer present, Calls in communication on the frequency can continue to communicate.

Radio link control station 20 of mobile communication system B
When the transmission of the radio wave of the shared frequency is stopped in the radio base station 30B under the control of B, the radio channel control station 20B of the mobile communication system B to the radio channel control station of the mobile communication system A responds to the shared frequency operation inquiry. Two
A shared frequency operation inquiry response (possible) indicating that the use of the shared frequency is permitted is transmitted to 0A (S12).
0).

The radio network controller 20A of the mobile communication system A, which has received the shared frequency operation inquiry response (possible),
The operation of the shared frequency is started (S122). At this point, the radio network controller 20A of the mobile communication system A is in a shared frequency operating state.

Next, the operation and effect of the wireless line control system according to this embodiment will be described. The radio line control system according to the present embodiment prepares a shared frequency between the two mobile communication systems A and B, and uses the shared frequency when the communication traffic of the mobile communication system A is equal to or higher than a threshold value. Requesting the use of the shared frequency from the mobile communication system B, and when the communication traffic of the mobile communication system B is less than the threshold value, the mobile communication system B stops the wireless communication using the shared frequency, Then, the mobile communication system A is allowed to use the shared frequency. Therefore, the authority to use the shared frequency can be transferred from the mobile communication system B having relatively small communication traffic to the mobile communication system A having relatively large communication traffic. As a result, it becomes possible to efficiently use the frequency when the mobile communication systems A and B coexist. In addition, since the frequencies can be used efficiently, the mobile communication systems A and B can be used.
It is also possible to increase the capacity of each subscriber.

In the radio line control system according to this embodiment, for convenience of explanation, the mobile communication system A is the mobile communication system on the side requesting the use of the shared frequency, and the mobile communication system B is the side allowing the use of the shared frequency. In the above description, the wireless line control station 20A of the mobile communication system A has the function of the wireless line control station 20B of the mobile communication system B, and the wireless line control station 20B of the mobile communication system B has the mobile communication system. By providing the function of the wireless line control station 20A of A, each of the wireless line control station 20A of the mobile communication system A and the wireless line control station 20B of the mobile communication system B requests the use of the shared frequency, It is possible to be any one of the parties that allows the use of the shared frequency.

Further, the radio line control system according to the present embodiment controls the usage state of the shared frequency between the two mobile communication systems A and B. It is also possible to control the usage state of the shared frequency between the mobile communication systems.

(Second Embodiment) A radio line control system according to a second embodiment of the present invention will be described with reference to the drawings. The wireless line control system according to the present embodiment includes the wireless line control station according to the embodiment of the present invention.

As shown in FIG. 1, the radio line control system according to the present embodiment has two mobile communication systems A, which have radio zones overlapping with each other and are provided with a shared frequency for these radio zones. It is used to control the usage state of the shared frequency between the respective Bs. In this case, the priority order regarding the use of the shared frequency is set for each of the mobile communication systems A and B.

First, the configuration of the wireless line control system according to this embodiment will be described. The wireless line control system according to this embodiment includes a wireless line control station 20A of a mobile communication system A and a wireless line control station 20B of a mobile communication system B.

Radio link control station 20 of mobile communication system A
Basically, A has the configuration already described with reference to FIG. Here, the control unit 22 of the radio network controller 20A
Further uses a function of acquiring communication traffic in a wireless zone provided by the wireless base station 30A of the mobile communication system A, and uses a shared frequency when the acquired communication traffic is equal to or higher than a predetermined threshold. The mobile communication system B has a function of requesting use of the shared frequency in the mobile communication system A.

Radio link control station 20 of mobile communication system B
B also basically has the configuration already described with reference to FIG. Here, the control unit 22 of the radio network controller 20B
Further, according to the function of acquiring the communication traffic in the wireless zone provided by the wireless base station 30B of the mobile communication system B and the request from the mobile communication system A to use the shared frequency, the priority of the mobile communication system A is Even if the priority of the mobile communication system B is higher or the priority of the mobile communication system A is equal to or lower than the priority of the mobile communication system B, the communication traffic is below the predetermined threshold value. In some cases, it has a function of stopping radio communication using the shared frequency in the mobile communication system B, stopping transmission of radio waves of the shared frequency, and allowing the mobile communication system A to use the shared frequency. .

The operation of the wireless channel control system according to this embodiment will be described below in detail, and the wireless channel control method according to the embodiment of the present invention will be described.
FIG. 6 is a flowchart showing the operation of the wireless line control system according to the present embodiment.

First, it is assumed that the radio network controller 20B of the mobile communication system B is in a shared frequency operating state. In this case, in order to prevent radio wave interference, the radio network controller 20A of the mobile communication system A is in the shared frequency operation prohibited state.

In this state, in the radio network controller 20A of the mobile communication system A, at regular intervals, that is, every time the communication traffic determination timer times out (S2
02), a radio base station 30 under the control of the radio network controller 20A
The communication traffic in the wireless zone provided by A is acquired (S204), and the communication traffic is compared with the threshold value (S206). Here, the timer value of the communication traffic determination timer and the threshold value are determined in advance and stored in the information storage unit 24 of the radio network controller 20A.

As a result of the comparison of the communication traffic with the threshold value, if the communication traffic becomes equal to or higher than the threshold value, the radio network controller 20A of the mobile communication system A causes the mobile communication system B using the shared frequency. A shared frequency operation inquiry requesting the use of the shared frequency in the mobile communication system A is transmitted to the radio network controller 20B (S208). Here, the information regarding the mobile communication system using the shared frequency (here, the mobile communication system B) is acquired in advance and stored in the information storage unit 24 of the radio network controller 20A.

In the radio network controller 20B of the mobile communication system B that has received the shared frequency operation inquiry, the priority of the mobile communication system A that is the transmission source of the shared frequency operation inquiry and the mobile communication system in the shared frequency operating state. The priority of B is compared (S210). Here, the priority order is determined in advance and stored in the information storage unit 24 of the radio network controller 20B.

As a result of the comparison between the priority of the mobile communication system A and the priority of the mobile communication system B, if the priority of the mobile communication system A is higher than the priority of the mobile communication system B, the mobile communication system B The wireless communication using the shared frequency in the wireless base station 30B under the wireless network control station 20B is stopped, and the transmission of the radio wave of the shared frequency is stopped (S216). At this point, the radio network controller 20B of the mobile communication system B enters the shared frequency operation prohibited state.

Here, when the radio communication using the shared frequency is stopped and the transmission of the radio wave of the shared frequency is stopped,
First, it is determined whether there is a call in communication on the shared frequency (S212), and if there is a call in communication on the shared frequency, these calls are switched to a channel of another frequency (S214). , The transmission of the radio wave of the shared frequency is stopped after there is no call in communication on the shared frequency.

Radio link control station 20 of mobile communication system B
When the transmission of the radio wave of the shared frequency is stopped in the radio base station 30B under the control of B, the radio channel control station 20B of the mobile communication system B to the radio channel control station of the mobile communication system A responds to the shared frequency operation inquiry. Two
A shared frequency operation inquiry response (possible) indicating that the use of the shared frequency is permitted is transmitted to 0A (S21).
8).

The radio network controller 20A of the mobile communication system A which has received the shared frequency operation inquiry response (possible),
The operation of the shared frequency is started (S220). At this point, the radio network controller 20A of the mobile communication system A is in a shared frequency operating state.

On the other hand, the result of comparing the priority order of the mobile communication system A and the mobile communication system B (S2
10) If the priority order of the mobile communication system A is equal to or lower than the priority order of the mobile communication system B, the wireless line control station 20B in the wireless line control station 20B of the mobile communication system B which has received the shared frequency operation inquiry. The communication traffic in the wireless zone provided by the wireless base station 30B under the control is acquired, and the communication traffic is compared with the threshold value (S222). Here, the threshold value is determined in advance, and the information storage unit 24 of the radio network controller 20B.
Remembered in.

As a result of the comparison of the communication traffic with the threshold value, if the communication traffic is equal to or higher than the threshold value, as a response to the shared frequency operation inquiry, from the radio network controller 20B of the mobile communication system B to the mobile communication system. A shared frequency operation inquiry response (not possible) indicating that the use of the shared frequency in the mobile communication system A is not permitted is transmitted to the radio network controller 20A of A (S22).
4), the process ends.

On the other hand, when the communication traffic is smaller than the threshold value, it is judged whether or not there is a call being communicated on the shared frequency as in the above-described processing (S212), and the call being communicated on the shared frequency is determined. If such a call exists, these calls are switched to a channel of another frequency (S21
4) Stop transmission of radio waves of the shared frequency after there is no call in communication on the shared frequency (S21).
6). Also, if the transmission of radio waves of the shared frequency is stopped,
A shared frequency operation inquiry response (possible) is transmitted from the radio network controller 20B of the mobile communication system B to the radio network controller 20A of the mobile communication system A (S21).
8), the radio network controller 20A of the mobile communication system A
The operation of the shared frequency is started (S220).

The operation and effect of the wireless line control system according to this embodiment will be described next. The radio line control system according to the present embodiment prepares a shared frequency between the two mobile communication systems A and B, and when the communication traffic of the mobile communication system A is equal to or higher than a predetermined threshold, the shared frequency is set. The mobile communication system B in use is requested to use the shared frequency, and the mobile communication system A
When the priority of is higher than the priority of the mobile communication system B, the wireless communication using the shared frequency in the mobile communication system B is stopped, and the transmission of the radio wave of the shared frequency is stopped.
The mobile communication system A is allowed to use the shared frequency. Therefore, the authority to use the shared frequency can be transferred from the mobile communication system B having a low priority to the mobile communication system A having a high priority and relatively high communication traffic. As a result, it becomes possible to efficiently use the frequency when the mobile communication systems A and B coexist. Also,
Since the frequencies can be used efficiently, the subscriber capacities of the mobile communication systems A and B can be expanded. For example, when a mobile communication system mainly for voice communication and a mobile communication system mainly for data communication coexist, it is possible to improve efficiency by increasing the priority of the former, which requires immediateness in call connection. It becomes possible to operate a good frequency.

In the radio channel control system according to this embodiment, even when the priority of the mobile communication system A is equal to or lower than the priority of the mobile communication system B, the communication traffic of the mobile communication system B is If it is less than the predetermined threshold value, the wireless communication using the shared frequency in the mobile communication system B is stopped, the transmission of the radio wave of the shared frequency is stopped, and the mobile communication system A is allowed to use the shared frequency. . Therefore, the authority to use the shared frequency
The mobile communication system B having a high priority but low communication traffic can be moved to the mobile communication system A having a low priority but high communication traffic. As a result, the frequencies can be used more efficiently when the mobile communication systems A and B coexist.

In the radio channel control system according to this embodiment, for convenience of explanation, the mobile communication system A is the mobile communication system on the side requesting the use of the shared frequency, and the mobile communication system B is the side allowing the use of the shared frequency. In the above description, the wireless line control station 20A of the mobile communication system A has the function of the wireless line control station 20B of the mobile communication system B, and the wireless line control station 20B of the mobile communication system B has the mobile communication system. By providing the function of the wireless line control station 20A of A, each of the wireless line control station 20A of the mobile communication system A and the wireless line control station 20B of the mobile communication system B requests the use of the shared frequency, It is possible to be any one of the parties that allows the use of the shared frequency.

Further, the radio line control system according to the present embodiment controls the use state of the shared frequency between the two mobile communication systems A and B. It is also possible to control the usage state of the shared frequency between the mobile communication systems.

(Third Embodiment) A radio line control system according to a third embodiment of the present invention will be described with reference to the drawings. The wireless line control system according to the present embodiment includes the wireless line control station according to the embodiment of the present invention.

As shown in FIG. 4, the radio line control system according to the present embodiment has three mobile communication systems A, which have radio zones that overlap each other and have a shared frequency prepared for these radio zones. Between B and M, it is used to control the usage state of the shared frequency. In this case, the mobile communication system M is the main mobile communication system.

First, the configuration of the wireless line control system according to this embodiment will be described. The radio line control system according to the present embodiment includes a radio line control station 20A of a mobile communication system A, a radio line control station 20B of a mobile communication system B, and a radio line control station 20M of a mobile communication system M.
And is configured.

Radio link control station 20 of mobile communication system A
Basically, A has the configuration already described with reference to FIG. Here, the control unit 22 of the radio network controller 20A
Is the radio network controller 20 of the mobile communication system A.
It has a function of acquiring communication traffic in the wireless zone provided by the wireless base station 30A under the control of A and a function of notifying the acquired mobile communication system M of the acquired communication traffic.

Radio link control station 20 of mobile communication system B
B also basically has the configuration already described with reference to FIG. Here, the control unit 22 of the radio network controller 20B
Is the radio network controller 20 of the mobile communication system B.
It has a function of acquiring communication traffic in the wireless zone provided by the wireless base station 30B under B and a function of notifying the acquired mobile communication system M of the acquired communication traffic.

Radio link control station 20 of mobile communication system M
Basically, M also has the configuration already described with reference to FIG. Here, the control unit 22 of the radio network controller 20M
Further extracts the mobile communication system having the largest communication traffic based on the communication traffic of the wireless zones in the mobile communication systems A and B notified from the mobile communication systems A and B, respectively, and extracts the largest communication traffic. When the mobile communication system and the mobile communication system using the shared frequency are different, the wireless communication using the shared frequency in the mobile communication system using the shared frequency is stopped and the transmission of the radio wave of the shared frequency is stopped. , Has a function of permitting the use of the shared frequency for the mobile communication system having the largest communication traffic.

The operation of the wireless line control system according to this embodiment will be described below in detail, and the wireless line control method according to the embodiment of the present invention will be described.
FIG. 7 is a flowchart showing the operation of the wireless line control system according to this embodiment.

First, it is assumed that the radio network controller 20B of the mobile communication system B is in a shared frequency operating state. In this case, in order to prevent radio wave interference, the wireless line control station 20A of the mobile communication system A and the wireless line control station 20M of the mobile communication system M are in the shared frequency operation prohibited state.

In this state, in the radio network controller 20M of the mobile communication system M, which is the main trunk, the radio under the control of the radio network controller 20M at regular intervals, that is, every time the communication traffic determination timer times out (S302). The communication traffic in the wireless zone provided by the base station 30M is acquired (S304). Here, the timer value of the communication traffic determination timer is predetermined and stored in the information storage unit 24 of the radio network controller 20M.

In the radio network controller 20A of the mobile communication system A, at regular intervals, that is, every time the communication traffic determination timer times out (S30).
6), a radio base station 30A under the control of the radio network controller 20A
The communication traffic of the wireless zone provided by is acquired (S308). Here, the timer value of the communication traffic determination timer is determined in advance and stored in the information storage unit 24 of the radio network controller 20A. In addition, the acquired communication traffic is notified to the radio network controller 20M of the mobile communication system M, which is the main trunk (S31).
0).

Similarly, in the radio network controller 20B of the mobile communication system B, at regular intervals, that is, every time the communication traffic determination timer times out (S31).
2), a radio base station 30B under the control of the radio network controller 20B
The communication traffic of the wireless zone provided by is acquired (S314). Here, the timer value of the communication traffic determination timer is predetermined and stored in the information storage unit 24 of the radio network controller 20B. In addition, the acquired communication traffic is notified to the radio network controller 20M of the mobile communication system M, which is the main trunk (S31).
6).

Here, the radio network controller 20M of the mobile communication system M and the radio network controller 20 of the mobile communication system A.
Although the timer values of the communication traffic determination timers used in A and the radio network controller 20B of the mobile communication system B may be different, they are preferably the same value. Furthermore, the radio network controller 20M of the mobile communication system M, the radio network controller 20A of the mobile communication system A,
It is preferable that the communication traffic determination timers in the respective radio network controller 20B of the mobile communication system B are synchronized in time-up.

In the main mobile communication system M, the communication traffic of the wireless zones in the mobile communication systems A and B notified from the mobile communication systems A and B, and the wireless communication in the mobile communication system M acquired by itself. The communication traffic of the zone is referred to, and the mobile communication system having the largest communication traffic is extracted from the mobile communication systems A, B, and M (S31).
8). The extraction of the mobile communication system having the largest communication traffic may be performed periodically or may be performed irregularly in response to some trigger.

Here, when the mobile communication system having the largest communication traffic (the mobile communication system A in this case) and the mobile communication system using the shared frequency (the mobile communication system B in this case) are different from each other, the main movement is made. The radio network controller 20M of the communication system M stops the radio communication using the shared frequency in the mobile communication system B using the shared frequency, and stops the transmission of the radio wave of the shared frequency to move the mobile station with the largest communication traffic. Communication system A
Allows the use of shared frequencies. Here, the information regarding the mobile communication system using the shared frequency (here, the mobile communication system B) is acquired in advance,
It is stored in the information storage unit 24 of the radio network controller 20M.

Specifically, first, the radio frequency control station 20M of the mobile communication system M notifies the mobile communication system B using the shared frequency that the operation of the shared frequency should be stopped. Is transmitted (S32
0).

In the radio network controller 20B of the mobile communication system B that has received the shared frequency operation prohibition notification, it is judged whether or not there is a call in communication on the shared frequency (S322), and communication is being performed on the shared frequency. When there is a call, these calls are switched to a channel of another frequency (S324), and after there is no call in communication on the shared frequency, the transmission of the radio wave of the shared frequency is stopped (S326). At this point, the radio network controller 20B of the mobile communication system B enters the shared frequency operation prohibited state.

Radio link control station 20 of mobile communication system B
When the transmission of the radio wave of the shared frequency is stopped in the radio base station 30B under the control of B, the use of the shared frequency is performed from the radio line control station 20B of the mobile communication system B to the radio line control station 20M of the mobile communication system M. A shared frequency operation prohibition notification confirmation indicating that the operation has been stopped is transmitted (S328).

Upon receipt of the shared frequency operation prohibition notification confirmation, the radio network controller 20M of the mobile communication system M permits the radio network controller 20A of the mobile communication system A having the largest communication traffic to use the shared frequency. The shared frequency operable notification is transmitted (S330).

The radio network controller 20A of the mobile communication system A, which has received the shared frequency operational notice, responds to this by the radio network controller 20 of the mobile communication system M.
A shared frequency availability notification confirmation is transmitted to M (S
332) and the operation of the shared frequency is started (S3).
34). At this point, the radio network controller 20A of the mobile communication system A is in a shared frequency operating state.

Next, the operation and effect of the wireless line control system according to this embodiment will be described. In the wireless line control system according to the present embodiment, a shared frequency is prepared between the three mobile communication systems A, B, and M so that the mobile communication system M, which is the main communication traffic of each of the mobile communication systems A and B, can use the shared frequency. A mobile communication system that notifies and has the largest communication traffic (eg, mobile communication system A)
And a mobile communication system using the shared frequency (for example, mobile communication system B) are different from each other, the mobile communication system M serving as the main trunk is a mobile communication system using the shared frequency (for example, mobile communication system B). The wireless communication using the shared frequency is stopped, the transmission of the radio wave having the sharable frequency is stopped, and the use of the shared frequency is permitted for the mobile communication system (for example, the mobile communication system A) having the largest communication traffic. Therefore, the authority to use the shared frequency can be transferred to the mobile communication system having the largest communication traffic. As a result, it becomes possible to efficiently use the frequency when the mobile communication systems A, B, M coexist. Further, since the frequency can be used efficiently, the mobile communication system A,
It is also possible to increase the subscriber capacity of each of B and M.

In the mobile communication systems A and B other than the main mobile communication system M, the radio channel control system according to the present embodiment further transfers the communication traffic of its own mobile communication system to the main mobile communication system M. All that is required is to notify, and the configuration of the radio network controller 20A, 20B becomes simple.

In the radio channel control system according to this embodiment, for convenience of explanation, the mobile communication system A is a mobile communication system in which the use of the shared frequency is permitted, and the mobile communication system B is a mobile communication in which the use of the shared frequency is prohibited. Although described as a communication system, this relationship could be reversed.

The radio line control system according to the present embodiment controls the usage state of the shared frequency between the main mobile communication system M and the other two mobile communication systems A and B. With the same configuration, it is possible to control the usage state of the shared frequency between each of the main mobile communication system M and the other three or more mobile communication systems.

(Fourth Embodiment) A radio line control system according to a fourth embodiment of the present invention will be described with reference to the drawings. The wireless line control system according to the present embodiment includes the wireless line control station according to the embodiment of the present invention.

As shown in FIG. 4, the radio line control system according to the present embodiment has three mobile communication systems A, which have radio zones that overlap each other and have a shared frequency for these radio zones. Between B and M, it is used to control the usage state of the shared frequency. In this case, the mobile communication system M is the main mobile communication system. In addition, the mobile communication systems A, B, and M have respective priorities for use of the shared frequency. Furthermore, a threshold value relating to communication traffic is set for each of the mobile communication systems A, B, and M.

First, the configuration of the wireless line control system according to this embodiment will be described. The radio line control system according to the present embodiment includes a radio line control station 20A of a mobile communication system A, a radio line control station 20B of a mobile communication system B, and a radio line control station 20M of a mobile communication system M.
And is configured.

Radio network controller 20 of mobile communication system A
Basically, A has the configuration already described with reference to FIG. Here, the control unit 22 of the radio network controller 20A
Is the radio network controller 20 of the mobile communication system A.
It has a function of acquiring communication traffic in the wireless zone provided by the wireless base station 30A under the control of A and a function of notifying the acquired mobile communication system M of the acquired communication traffic.

Radio network controller 20 of mobile communication system B
B also basically has the configuration already described with reference to FIG. Here, the control unit 22 of the radio network controller 20B
Is the radio network controller 20 of the mobile communication system B.
It has a function of acquiring communication traffic in the wireless zone provided by the wireless base station 30B under B and a function of notifying the acquired mobile communication system M of the acquired communication traffic.

Radio link control station 20 of mobile communication system M
Basically, M also has the configuration already described with reference to FIG. Here, the control unit 22 of the radio network controller 20M
Further, based on the communication traffic of the wireless zones in the mobile communication systems A and B notified from the mobile communication systems A and B, respectively, a mobile communication system in which the communication traffic becomes equal to or more than a predetermined threshold value is set. The mobile communication system with the highest priority is extracted from the extracted mobile communication systems,
When the mobile communication system having the highest priority and the mobile communication system using the shared frequency are different, the wireless communication using the shared frequency in the mobile communication system using the shared frequency is stopped and the shared frequency It has a function of stopping the transmission of radio waves and permitting the mobile communication system with the highest priority to use the shared frequency.

The operation of the wireless channel control system according to this embodiment will be described below in detail, and the wireless channel control method according to the embodiment of the present invention will be described.
FIG. 8 is a flowchart showing the operation of the wireless line control system according to the present embodiment.

First, it is assumed that the radio network controller 20B of the mobile communication system B is in a shared frequency operating state. In this case, in order to prevent radio wave interference, the wireless line control station 20A of the mobile communication system A and the wireless line control station 20M of the mobile communication system M are in the shared frequency operation prohibited state.

In this state, in the radio network controller 20M of the mobile communication system M, which is the main trunk, the radio under the control of the radio network controller 20M at regular intervals, that is, every time the communication traffic determination timer times out (S402). Communication traffic in the wireless zone provided by the base station 30M is acquired (S404). Here, the timer value of the communication traffic determination timer is predetermined and stored in the information storage unit 24 of the radio network controller 20M.

Further, in the radio network controller 20A of the mobile communication system A, at regular intervals, that is, every time the communication traffic determination timer times out (S40).
6), a radio base station 30A under the control of the radio network controller 20A
The communication traffic of the wireless zone provided by is acquired (S408). Here, the timer value of the communication traffic determination timer is determined in advance and stored in the information storage unit 24 of the radio network controller 20A. Further, the acquired communication traffic is notified to the radio network controller 20M of the mobile communication system M which is the main trunk (S41).
0).

Similarly, in the radio network controller 20B of the mobile communication system B, at regular intervals, that is, every time the communication traffic determination timer times out (S41).
2), a radio base station 30B under the control of the radio network controller 20B
The communication traffic of the wireless zone provided by is acquired (S414). Here, the timer value of the communication traffic determination timer is predetermined and stored in the information storage unit 24 of the radio network controller 20B. Further, the acquired communication traffic is notified to the radio network controller 20M of the mobile communication system M which is the main trunk (S41).
6).

Here, the radio network controller 20M of the mobile communication system M and the radio network controller 20 of the mobile communication system A.
Although the timer values of the communication traffic determination timers used in A and the radio network controller 20B of the mobile communication system B may be different, they are preferably the same value. Furthermore, the radio network controller 20M of the mobile communication system M, the radio network controller 20A of the mobile communication system A,
It is preferable that the communication traffic determination timers in the respective radio network controller 20B of the mobile communication system B are synchronized in time-up.

In the main mobile communication system M, the communication traffic of the wireless zones in the mobile communication systems A and B notified from the mobile communication systems A and B, and the radio in the mobile communication system M acquired by itself. The communication traffic of the zone is referred to, and the mobile communication system in which the communication traffic becomes equal to or higher than a predetermined threshold is extracted (S418). This threshold may be a value commonly set for all of the plurality of mobile communication systems, or may be a value individually set for each of the plurality of mobile communication systems. Further, this threshold value is stored in the information storage unit 24 of the radio network controller 20M of the mobile communication system M. here,
It is assumed that mobile communication system A and mobile communication system B are extracted.

Next, in the main mobile communication system M, the mobile communication system with the highest priority is extracted from the mobile communication systems extracted as described above (S420). Here, it is assumed that the order of priority is mobile communication system A, mobile communication system B, and mobile communication system M, and as a result, mobile communication system A is extracted.

Here, when the mobile communication system with the highest priority (here, mobile communication system A) and the mobile communication system using the shared frequency (here, mobile communication system B) are different, the main movement is Communication system M
The wireless line control station 20M of the mobile communication system 20M stops the wireless communication using the shared frequency in the mobile communication system B using the shared frequency, and stops the transmission of the radio wave of the shared frequency, and the mobile communication system A having the highest priority. Allows the use of shared frequencies. Here, the information regarding the mobile communication system using the shared frequency (here, the mobile communication system B) is acquired in advance, and the radio network controller 2
It is stored in the 0M information storage unit 24.

Specifically, first, the radio network controller 20M of the mobile communication system M notifies the mobile communication system B using the shared frequency that the operation of the shared frequency should be stopped. Is transmitted (S42
2).

In the radio network controller 20B of the mobile communication system B which has received the shared frequency operation prohibition notification, it is judged whether or not there is a call in communication on the shared frequency (S424), and communication is being performed on the shared frequency. When there is a call, these calls are switched to a channel of another frequency (S426), and the transmission of the radio wave of the shared frequency is stopped (S428) after there is no call in communication on the shared frequency. At this point, the radio network controller 20B of the mobile communication system B enters the shared frequency operation prohibited state.

Radio link control station 20 of mobile communication system B
When the transmission of the radio wave of the shared frequency is stopped in the radio base station 30B under the control of B, the radio channel control station 20B of the mobile communication system B instructs the radio channel control station 20M of the mobile communication system M to use the shared frequency. A shared frequency operation prohibition notification confirmation indicating that the operation has been stopped is transmitted (S430).

The radio network controller 20M of the mobile communication system M that has received the shared frequency operation prohibition notification confirmation confirms that the radio network controller 20A of the mobile communication system A having the highest priority.
In response to this, a shared frequency operable notification indicating that the use of the shared frequency is permitted is transmitted (S432).

The radio network controller 20A of the mobile communication system A, which has received the shared frequency operational notice, responds to this by the radio network controller 20 of the mobile communication system M.
A shared frequency availability notification confirmation is transmitted to M (S
434) and the operation of the shared frequency is started (S4).
36). At this point, the radio network controller 20A of the mobile communication system A is in a shared frequency operating state.

Next, the operation and effect of the wireless line control system according to this embodiment will be described. In the wireless line control system according to the present embodiment, a shared frequency is prepared between the three mobile communication systems A, B, and M, and the mobile communication system M, which is the main communication traffic of each of the mobile communication systems A and B, is set. A mobile communication system having the highest priority among the mobile communication systems that notify the communication traffic and the communication traffic exceeds the threshold (for example, mobile communication system A).
And a mobile communication system using the shared frequency are different from each other, the mobile communication system M serving as a main trunk is a wireless communication using the shared frequency in the mobile communication system using the shared frequency (for example, the mobile communication system B). To stop the transmission of radio waves of a sharable frequency and share it with the mobile communication system with the highest priority (for example, mobile communication system A) among the mobile communication systems whose communication traffic exceeds the threshold value. Allow the use of frequencies.
Therefore, the authority to use the shared frequency can be transferred to the mobile communication system having the highest priority among the mobile communication systems whose communication traffic exceeds the threshold. As a result, it becomes possible to efficiently use the frequency when the mobile communication systems A, B, M coexist. In addition, since the frequency can be used efficiently,
The subscriber capacity of each of the mobile communication systems A, B and M can be expanded.

In the mobile communication systems A and B other than the main mobile communication system M, the radio line control system according to the present embodiment further transfers the communication traffic of its own mobile communication system to the main mobile communication system M. All that is required is to notify, and the configuration of the radio network controller 20A, 20B becomes simple.

In the radio line control system according to the present embodiment, for convenience of explanation, the mobile communication system A is a mobile communication system in which the use of the shared frequency is permitted, and the mobile communication system B is a mobile communication in which the use of the shared frequency is prohibited. Although described as a communication system, this relationship could be reversed.

The radio line control system according to the present embodiment controls the use state of the shared frequency between the mobile communication system M which is the main trunk and the other two mobile communication systems A and B. With the same configuration, it is also possible to control the usage state of the shared frequency between each of the main mobile communication system M and the other three or more mobile communication systems.

(Fifth Embodiment) A radio line control system according to a fifth embodiment of the present invention will be described with reference to the drawings. The wireless line control system according to the present embodiment includes the wireless line control station according to the embodiment of the present invention.

As shown in FIG. 4, the wireless line control system according to the present embodiment has three mobile communication systems A, which have wireless zones that overlap each other and have a shared frequency for these wireless zones. Between B and M, it is used to control the usage state of the shared frequency. In this case, the mobile communication system M is the main mobile communication system.

First, the configuration of the wireless line control system according to this embodiment will be described. The radio line control system according to the present embodiment includes a radio line control station 20A of a mobile communication system A, a radio line control station 20B of a mobile communication system B, and a radio line control station 20M of a mobile communication system M.
And is configured.

Radio link control station 20 of mobile communication system A
Basically, A has the configuration already described with reference to FIG. Here, the control unit 22 of the radio network controller 20A
Is a function of acquiring communication traffic in the wireless zone provided by the wireless base station 30A under the control of the wireless circuit control station 20A, and if the acquired communication traffic is equal to or higher than a predetermined threshold, moves as a main trunk. It has a function of requesting the communication system M to use the shared frequency in the mobile communication system A.

Radio link control station 20 of mobile communication system M
Basically, M also has the configuration already described with reference to FIG. Here, the control unit 22 of the radio network controller 20M
Further, in response to a request for use of a shared frequency from a mobile communication system that does not use the shared frequency, in a mobile communication system that does not use the shared frequency, It has a function that requires the use of a shared frequency.

Radio link control station 20 of mobile communication system B
B also basically has the configuration already described with reference to FIG. Here, the control unit 22 of the radio network controller 20B
Is a function of acquiring communication traffic in a wireless zone provided by the wireless base station 30B under the control of the wireless network control station 20B, and a shared frequency of another mobile communication system transmitted from the main mobile communication system M. When the communication traffic obtained as described above is less than the predetermined threshold value in response to the use request, the wireless communication using the shared frequency in the mobile communication system B is stopped, and the transmission of the radio wave of the shared frequency is stopped. , And has a function of allowing the use of the shared frequency to other mobile communication systems.

The operation of the wireless line control system according to this embodiment will be described below in detail, and the wireless line control method according to the embodiment of the present invention will be described.
FIG. 9 is a flowchart showing the operation of the wireless line control system according to this embodiment.

First, it is assumed that the radio network controller 20B of the mobile communication system B is in a shared frequency operating state. In this case, in order to prevent radio wave interference, the wireless line control station 20A of the mobile communication system A and the wireless line control station 20M of the mobile communication system M are in the shared frequency operation prohibited state.

In this state, in the radio network controller 20A of the mobile communication system A, at regular intervals, that is, every time the communication traffic determination timer times out (S5
02), a radio base station 30 under the control of the radio network controller 20A
The communication traffic of the wireless zone provided by A is acquired (S504), and the communication traffic is compared with the threshold value (S506). Here, the timer value of the communication traffic determination timer and the threshold value are determined in advance and stored in the information storage unit 24 of the radio network controller 20A.

As a result of the comparison of the communication traffic with the threshold value, if the communication traffic is equal to or higher than the threshold value, the radio line control station 20A of the mobile communication system A controls the radio line of the mobile communication system M which is the main trunk. A shared frequency operation request for requesting the use of the shared frequency in the mobile communication system A is transmitted to the station 20M (S5).
08).

When the radio frequency control station 20M of the master mobile communication system M receives the shared frequency operation request, the radio frequency control station 2 of the master mobile communication system M is received.
Mobile communication system B using shared frequency from 0M
A shared frequency operation inquiry requesting the use of the shared frequency is transmitted to the radio network controller 20B (S510). Here, the information about the mobile communication system (here, the mobile communication system B) using the shared frequency is acquired in advance and stored in the information storage unit 24 of the radio network controller 20M.

In the wireless line control station 20B of the mobile communication system B that has received the shared frequency operation inquiry, the communication traffic of the wireless zone provided by the wireless base station 30B under the control of the wireless line control station 20B is acquired and the communication traffic concerned is acquired. Is compared with a threshold value (S512). Here, the threshold value is determined in advance and stored in the information storage unit 24 of the radio network controller 20B.

As a result of the comparison of the communication traffic with the threshold value, when the communication traffic is equal to or higher than the threshold value, the radio network controller 20B of the mobile communication system B becomes the master in response to the shared frequency operation inquiry. A shared frequency operation inquiry response (not possible) indicating that the use of the shared frequency is not permitted is transmitted to the radio network controller 20M of the mobile communication system M (S514).
As a response to the shared frequency operation request, the fact that the wireless line control station 20M of the mobile communication system M, which is the main trunk, does not allow the wireless line control station 20A of the mobile communication system A to use the shared frequency in the mobile communication system A Shared frequency operation response (not possible) is transmitted (S51
6), the process ends.

On the other hand, when the communication traffic is smaller than the threshold value, the radio network controller 20B of the mobile communication system B is used.
In step S518, it is determined whether there is a call in communication on the shared frequency. If there are calls in communication on the shared frequency, these calls are switched to a channel of another frequency (S520). , The transmission of the radio wave of the shared frequency is stopped after there is no call in communication on the shared frequency (S522). At this point, the radio network controller 20B of the mobile communication system B enters the shared frequency operation prohibited state.

Radio link control station 20 of mobile communication system B
When the transmission of the radio wave of the shared frequency is stopped in the radio base station 30B under the control of B, as a response to the shared frequency operation inquiry, the radio network controller 20B of the mobile communication system B transmits radio waves of the mobile communication system M, which is the main trunk. A shared frequency operation inquiry response (possible) indicating that the use of the shared frequency is permitted is transmitted to the line control station 20M (S524), and at the same time, as a response to the shared frequency operation request, the mobile communication system M which is the main trunk From the wireless line control station 20M of No. 1 to the wireless line control station 20A of the mobile communication system A, a shared frequency operation response (possible) indicating that the use of the shared frequency in the mobile communication system A is permitted is transmitted (S526).

Upon receiving the shared frequency operation response (possible), the radio network controller 20A of the mobile communication system A starts operating the shared frequency (S528). At this point, the radio network controller 20A of the mobile communication system A is in a shared frequency operating state.

Next, the operation and effect of the wireless line control system according to this embodiment will be described. The radio line control system according to the present embodiment prepares a shared frequency among the three mobile communication systems A, B, and M, and moves when the communication traffic of the mobile communication system A is equal to or higher than a predetermined threshold value. The mobile communication system A requests the core mobile communication system M to use the shared frequency, and the main mobile communication system M requests the mobile communication system B using the shared frequency to use the shared frequency. When the communication traffic of the communication system B is less than a predetermined threshold value, the wireless communication using the shared frequency in the mobile communication system B is stopped, the transmission of the radio wave of the shared frequency is stopped, and the mobile communication system A is stopped. Allow the use of shared frequencies. Therefore, the authority to use the shared frequency can be transferred from the mobile communication system B having relatively small communication traffic to the mobile communication system A having relatively large communication traffic. As a result, it becomes possible to efficiently use the frequency when the mobile communication systems A, B, M coexist. Further, since the frequencies can be used efficiently, the subscriber capacities of the mobile communication systems A, B and M can be expanded.

The radio line control system according to the present embodiment further requests another mobile communication system via the main mobile communication system M to use a sharable frequency, so that another mobile communication system can be directly used. In comparison with the case where the use of the frequency that can be shared by the mobile communication system is requested, the radio network controller of the mobile communication system other than the mobile communication system M, which is the master, can have a simple configuration. On the other hand, as compared with the case where the master mobile communication system M collects communication traffic of each of a plurality of mobile communication systems, the radio network controller of the master mobile communication system M can have a simple configuration. In addition, it is possible to reduce the amount of data transmitted and received between the main mobile communication system M and another mobile communication system.

In the radio channel control system according to this embodiment, for convenience of explanation, the mobile communication system A is the mobile communication system on the side requesting the use of the shared frequency, and the mobile communication system B is the side allowing the use of the shared frequency. The mobile communication system has been described as a mobile communication system of the present invention, but the radio network controller 20A of the mobile communication system A is provided with the function of the radio network controller 20B of the mobile communication system B, and the radio network controller 20B of the mobile communication system B is mobile communication system. By providing the function of the wireless line control station 20A of A, each of the wireless line control station 20A of the mobile communication system A and the wireless line control station 20B of the mobile communication system B requests the use of the shared frequency, It is possible to be any one of the parties that allows the use of the shared frequency.

Further, the radio line control system according to this embodiment controls the usage state of the shared frequency between the main mobile communication system M and the other two mobile communication systems A and B. However, with the same configuration, it is possible to control the usage state of the shared frequency between each of the main mobile communication system M and the other three or more mobile communication systems.

(Sixth Embodiment) A radio channel control system according to a sixth embodiment of the present invention will be described with reference to the drawings. The wireless line control system according to the present embodiment includes the wireless line control station according to the embodiment of the present invention.

As shown in FIG. 4, the wireless line control system according to the present embodiment has three mobile communication systems A, which have wireless zones that overlap each other and have a shared frequency prepared for these wireless zones. Between B and M, it is used to control the usage state of the shared frequency. In this case, the mobile communication system M is the main mobile communication system. In addition, a priority order for using the shared frequency is set for each of the mobile communication systems A, B, and M.

First, the configuration of the wireless line control system according to this embodiment will be described. The radio line control system according to the present embodiment includes a radio line control station 20A of a mobile communication system A, a radio line control station 20B of a mobile communication system B, and a radio line control station 20M of a mobile communication system M.
And is configured.

Radio circuit control station 20 of mobile communication system A
Basically, A has the configuration already described with reference to FIG. Here, the control unit 22 of the radio network controller 20A
Is a function of acquiring communication traffic in the wireless zone provided by the wireless base station 30A under the control of the wireless circuit control station 20A, and if the acquired communication traffic is equal to or higher than a predetermined threshold, moves as a main trunk. It has a function of requesting the communication system M to use the shared frequency in the mobile communication system A.

Radio link control station 20 of mobile communication system B
B also basically has the configuration already described with reference to FIG.

Radio circuit control station 20 of mobile communication system M
Basically, M also has the configuration already described with reference to FIG. Here, the control unit 22 of the radio network controller 20M
In addition, in response to a request to use a shared frequency from a mobile communication system that does not use the shared frequency, the priority of the requesting mobile communication system is higher than the priority of the mobile communication system that uses the shared frequency. If it is higher, the wireless communication using the shared frequency in the mobile communication system using the shared frequency is stopped, the transmission of the radio wave of the shared frequency is stopped, and the requesting mobile communication system is allowed to use the shared frequency. It has a function to do.

The operation of the wireless line control system according to this embodiment will be described below in detail, and the wireless line control method according to the embodiment of the present invention will be described.
FIG. 10 is a flowchart showing the operation of the wireless line control system according to this embodiment.

First, it is assumed that the radio network controller 20B of the mobile communication system B is in a shared frequency operating state. In this case, in order to prevent radio wave interference, the wireless line control station 20A of the mobile communication system A and the wireless line control station 20M of the mobile communication system M are in the shared frequency operation prohibited state.

In this state, in the radio network controller 20A of the mobile communication system A, at regular intervals, that is, every time the communication traffic determination timer times out (S6).
02), a radio base station 30 under the control of the radio network controller 20A
The communication traffic in the wireless zone provided by A is acquired (S604), and the communication traffic is compared with the threshold value (S606). Here, the timer value of the communication traffic determination timer and the threshold value are determined in advance and stored in the information storage unit 24 of the radio network controller 20A.

As a result of the comparison of the communication traffic with the threshold value, when the communication traffic is equal to or higher than the threshold value, the radio line control station 20A of the mobile communication system A controls the radio line of the mobile communication system M which is the master. A shared frequency operation request for requesting the use of the shared frequency in the mobile communication system A is transmitted to the station 20M (S6).
08).

When the radio network controller 20M of the main mobile communication system M receives the shared frequency operation request, the priority of the mobile communication system A requesting the use of the shared frequency and the mobile using the shared frequency. The priority of the communication system B is compared (S610). If the priority of the mobile communication system A requesting the use of the shared frequency is equal to or lower than the priority of the mobile communication system B using the shared frequency, as a response to the above-mentioned shared frequency operation request, the mobile that becomes the main trunk. The radio frequency control station 20M of the communication system M transmits a shared frequency operation response (impossible) to the radio frequency control station 20A of the mobile communication system A to the effect that the use of the shared frequency in the mobile communication system A is not permitted (S612). ), The process ends. Here, the information about the mobile communication system (here, the mobile communication system B) using the shared frequency is acquired in advance and stored in the information storage unit 24 of the radio network controller 20M.

On the other hand, when the priority of the mobile communication system A requesting the use of the shared frequency is higher than the priority of the mobile communication system B using the shared frequency, the radio link control of the mobile communication system M as the main trunk is performed. The station 20M transmits a shared frequency operation prohibition notification to the effect that the operation of the shared frequency should be stopped, to the radio network controller 20B of the mobile communication system B using the shared frequency (S614).

In the radio network controller 20B of the mobile communication system B which has received the shared frequency operation prohibition notification, it is judged whether or not there is a call in communication on the shared frequency (S616), and communication is being performed on the shared frequency. If there are calls, these calls are switched to channels of other frequencies (S618), and the transmission of radio waves of the shared frequency is stopped after there are no calls in communication on the shared frequency (S620). At this point, the radio network controller 20B of the mobile communication system B enters the shared frequency operation prohibited state.

Radio circuit control station 20 of mobile communication system B
When the transmission of the radio wave of the shared frequency is stopped in the radio base station 30B under the control of B, the radio channel control station 20B of the mobile communication system B shares the radio channel control station 20M of the mobile communication system M, which is the master. A shared frequency operation prohibition completion notification indicating that the use of the frequency has been stopped is transmitted (S6).
22).

Upon receiving the shared frequency operation prohibition completion notification, the radio network controller 20M of the mobile communication system M requests the radio network controller 20A of the mobile communication system A to use the shared frequency in response to the shared frequency operation request. A shared frequency operation response (possible) indicating that it is permitted is transmitted (S62).
4).

Upon receiving the shared frequency operation response (possible), the radio network controller 20A of the mobile communication system A starts operating the shared frequency (S626). At this point, the radio network controller 20A of the mobile communication system A is in a shared frequency operating state.

Next, the operation and effect of the wireless line control system according to this embodiment will be described. The radio line control system according to the present embodiment prepares a shared frequency among the three mobile communication systems A, B, and M, and moves when the communication traffic of the mobile communication system A is equal to or higher than a predetermined threshold value. When the communication system A requests the core mobile communication system M to use the shared frequency, and the priority of the mobile communication system A is higher than the priority of the mobile communication system B using the shared frequency, The main mobile communication system M stops the wireless communication using the shared frequency in the mobile communication system B, stops the transmission of the radio wave of the shared frequency, and allows the mobile communication system A to use the shared frequency. Therefore, the authority to use the shared frequency can be transferred from the mobile communication system B having a low priority to the mobile communication system A having a high priority and relatively large communication traffic. As a result, it becomes possible to efficiently use the frequency when the mobile communication systems A, B, M coexist. Further, since the frequencies can be used efficiently, the mobile communication systems A, B,
It is also possible to increase the subscriber capacity of each M.

The radio line control system according to the present embodiment further directly requests another mobile communication system via the main mobile communication system M to use a frequency that can be shared by the mobile communication system M. In comparison with the case where the use of the frequency that can be shared by the mobile communication system is requested, the radio network controller of the mobile communication system other than the mobile communication system M, which is the master, can have a simple configuration. On the other hand, as compared with the case where the master mobile communication system M collects communication traffic of each of a plurality of mobile communication systems, the radio network controller of the master mobile communication system M can have a simple configuration. In addition, it is possible to reduce the amount of data transmitted and received between the main mobile communication system M and another mobile communication system.

In the radio line control system according to this embodiment, for convenience of explanation, the mobile communication system A is the mobile communication system on the side requesting the use of the shared frequency, and the mobile communication system B is the side allowing the use of the shared frequency. The mobile communication system B has been described as a mobile communication system, but by making the radio network controller 20B of the mobile communication system B have the function of the radio network controller 20A of the mobile communication system A, the radio network controller 20B of the mobile communication system B is shared. It can also function as the requestor of the use of frequencies.

Further, the radio line control system according to the present embodiment controls the usage state of the shared frequency between the main mobile communication system M and the other two mobile communication systems A and B. However, with the same configuration, it is possible to control the usage state of the shared frequency between each of the main mobile communication system M and the other three or more mobile communication systems.

(Modification) In the radio network control systems according to the third to sixth embodiments, when the communication traffic in the mobile communication system using the shared frequency becomes smaller, the authority to use the shared frequency is given. It is also possible to transfer to the mobile communication system M which is the main trunk. FIG. 11 is a flowchart showing an operation when the authority to use the shared frequency is transferred to the mobile communication system which is the main trunk.

First, it is assumed that the radio network controller 20A of the mobile communication system A is in a shared frequency operating state. In this case, in order to prevent radio wave interference, the radio network controller 20M of the mobile communication system M is in the shared frequency operation prohibited state.

In this state, in the radio network controller 20A of the mobile communication system A, at regular intervals, that is, every time the communication traffic determination timer times out (S7).
02), a radio base station 30 under the control of the radio network controller 20A
The communication traffic in the wireless zone provided by A is acquired (S704), and the communication traffic is compared with the threshold value (S706). Here, the timer value of the communication traffic determination timer and the threshold value are determined in advance and stored in the information storage unit 24 of the radio network controller 20A.

When the communication traffic is smaller than the threshold value as a result of the comparison of the communication traffic with the threshold value, in the radio network controller 20A of the mobile communication system A, there is a call in communication on the shared frequency. It is determined whether or not (S708), and if there is a call in communication on the shared frequency, these calls are switched to a channel of another frequency (S710), and there is no call in communication on the shared frequency. After that, the transmission of the radio wave of the shared frequency is stopped (S712). At this point, the radio network controller 20A of the mobile communication system A is in the shared frequency operation prohibited state.

Radio link control station 20 of mobile communication system A
When the transmission of the radio wave of the shared frequency is stopped in the radio base station 30A under the control of A, the radio line control station 20B of the mobile communication system A shares the radio line control station 20M of the main mobile communication system M with the shared radio wave. A shared frequency operation cancellation notification indicating that the use of the frequency has been stopped is transmitted (S71).
4).

The radio network controller 20M of the mobile communication system M that has received the shared frequency operation cancellation notification transmits a shared frequency operation cancellation confirmation to the radio network controller 20A of the mobile communication system A (S716), and also shares The frequency operation is started (S718). At this point, the radio network controller 20M of the mobile communication system M is in a shared frequency operating state.

As described above, when the communication traffic in the mobile communication system using the shared frequency becomes small, the authority to use the shared frequency is transferred to the main mobile communication system M, that is, the surplus Even if the fluctuation of the communication traffic in the master mobile communication system M is comparatively large, etc., by sequentially using these frequencies in the master mobile communication system M,
The fluctuation can be dealt with.

Further, in the wireless line control system according to the present embodiment, a plurality of shared frequencies are prepared, and when allowing the use of the shared frequencies, the number of calls in communication is small among the plurality of shared frequencies. It is preferable to allow the frequency first. By doing so, it is possible to reduce the process of forcibly disconnecting the call during communication or switching the channel to the channel of another frequency, and the process of stopping the wireless communication using the shared frequency is quick and It will be easy. In addition, it is possible to reduce the influence on the communication quality of the call during communication.

Further, in the wireless line control system according to the present embodiment, when assigning a channel to a call originated by each of a plurality of mobile communication systems, channels having frequencies that cannot be shared with each other are preferentially assigned. Is preferred. More specifically, when assigning a channel to a call originated by the mobile communication system, first, a channel of a dedicated frequency (that is, a frequency that is not a shared frequency) is assigned to the mobile communication system, and the channel of the dedicated frequency disappears. If it happens, the shared frequency channel will be allocated for the first time. By doing so, it is possible to reduce the processing for changing the usage subject of the shared frequency. In addition, it is possible to reduce the processing of forcibly disconnecting a call during communication and switching to a channel of another frequency, which occurs due to a change in the usage subject of the shared frequency, and wireless communication using the shared frequency. The process of stopping is quick and easy.

Further, the radio line control system according to the present embodiment is constituted by the radio line control stations of each of the plurality of mobile communication systems. However, all or some of these functions are provided in each of the plurality of mobile communication systems. It can also be provided to the exchange or wireless base station.

[0201]

According to the wireless line control method and wireless line control system of the present invention, a frequency that can be shared by a plurality of mobile communication systems is prepared, communication traffic of a wireless zone is acquired, and the acquired communication is acquired. Controls the usage of sharable frequencies based on traffic. Therefore, the sharable frequency can be adaptively used by each of the plurality of mobile communication systems according to the communication traffic of each of the plurality of mobile communication systems. As a result, it becomes possible to efficiently use the frequency when a plurality of mobile communication systems coexist.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a mobile communication system.

FIG. 2 is a configuration diagram of a radio network controller.

FIG. 3 is a configuration diagram of a radio base station.

FIG. 4 is a configuration diagram of a mobile communication system.

FIG. 5 is a flowchart showing an operation of the wireless line control system according to the first embodiment.

FIG. 6 is a flowchart showing an operation of the wireless line control system according to the second embodiment.

FIG. 7 is a flowchart showing an operation of the wireless line control system according to the third embodiment.

FIG. 8 is a flowchart showing an operation of the wireless line control system according to the fourth embodiment.

FIG. 9 is a flowchart showing an operation of the wireless line control system according to the fifth embodiment.

FIG. 10 is a flowchart showing an operation of the wireless line control system according to the sixth embodiment.

FIG. 11 is a flowchart showing an operation when transferring the authority to use the shared frequency to the mobile communication system serving as the main trunk.

[Explanation of symbols]

10A, 10B, 10M ... Exchange station, 20A, 20B, 2
0M ... Wireless line control station, 22, 32 ... Control unit, 24,3
4 ... Information storage unit, 26, 36 ... Communication unit, 30A, 30
B, 30M ... Radio base station, 38 ... Modulator / demodulator, 40 ... Mobile station

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Akihiro Maehara             2-11-1, Nagatacho, Chiyoda-ku, Tokyo Stock             Ceremony company NTT Docomo (72) Inventor Kota Naito             2-11-1, Nagatacho, Chiyoda-ku, Tokyo Stock             Ceremony company NTT Docomo (72) Inventor Ken Uchiyama             2-11-1, Nagatacho, Chiyoda-ku, Tokyo Stock             Ceremony company NTT Docomo F term (reference) 5K067 AA21 BB04 DD11 DD51 DD57                       EE02 EE10 EE16 EE56 EE66                       EE71 HH22 JJ02 JJ11 JJ21                       JJ71 JJ76

Claims (36)

[Claims] 1. A radio zone provided by a radio base station overlaps with each other, and a frequency that can be shared with each other is prepared for a frequency used for radio communication between the radio base station and a mobile station in the radio zone. A wireless line control method for controlling the use state of the sharable frequency between each of a plurality of mobile communication systems, the acquiring step of acquiring communication traffic of the wireless zone, and the communication acquired in the acquiring step. And a control step of controlling the use state of the sharable frequency based on the traffic. 2. The radio zones provided by the radio base stations overlap each other, and the frequencies used for radio communication between the radio base station and the mobile station in the radio zone are provided so that they can be shared with each other. A wireless line control method for controlling the use state of the sharable frequency between a plurality of mobile communication systems, comprising a first acquisition step of acquiring communication traffic of the wireless zone in one mobile communication system. If the communication traffic acquired in the first acquisition step is equal to or more than a predetermined amount, the one mobile communication is performed with respect to another mobile communication system using a frequency that can be shared by the one mobile communication system. A request step for requesting the use of the sharable frequency in the system, and the other mobile communication system. And a second acquisition step of acquiring communication traffic of the wireless zone, and when the communication traffic acquired in the second acquisition step is less than a predetermined amount in response to the request in the request step, the other mobile communication In the system, the wireless communication using the sharable frequency is stopped, the transmission of the radio wave of the sharable frequency is stopped, and the other mobile communication system is the sharable frequency for the one mobile communication system. And a permit step for permitting the use of the wireless link control method. 3. The radio zones provided by the radio base stations overlap each other, and the frequencies used for radio communication between the radio base station and the mobile station in the radio zone are provided so that they can be shared with each other. A wireless line control method for controlling a use state of the sharable frequency between a plurality of mobile communication systems, wherein a priority order regarding use of the sharable frequency is determined for each of the plurality of mobile communication systems. A first acquisition step of acquiring communication traffic of the wireless zone in one mobile communication system; and when the communication traffic acquired in the first acquisition step is a predetermined amount or more, the one movement of the one For other mobile communication systems using frequencies that can be shared by the communication system, A request step for requesting use of the sharable frequency in a mobile communication system, and according to the request in the request step, if the priority of the one mobile communication system is higher than the priority of the other mobile communication system, Stopping wireless communication using the sharable frequency in the other mobile communication system,
A permit step of stopping the transmission of the radio wave of the sharable frequency and permitting the other mobile communication system to use the sharable frequency for the one mobile communication system. Wireless line control method. 4. The second mobile communication system further comprises a second acquisition step of acquiring communication traffic of the radio zone, wherein the permitting step is performed by the one mobile communication system according to the request in the requesting step. When the priority is equal to or lower than the priority of the other mobile communication system, and when the communication traffic acquired in the second acquisition step is less than a predetermined amount, the other mobile communication system In which the wireless communication using the sharable frequency is stopped, the transmission of the radio wave of the sharable frequency is stopped, and the other mobile communication system transmits the sharable frequency to the one mobile communication system. The wireless line control method according to claim 3, wherein use is permitted. 5. A radio zone provided by a radio base station overlaps with each other, and a frequency that can be shared with each other is prepared for a frequency used for radio communication between the radio base station and a mobile station in the radio zone. Between each of a plurality of mobile communication systems, a wireless line control method for controlling the use state of the sharable frequency, the acquisition step of acquiring the communication traffic of the wireless zone in each of the plurality of mobile communication systems, A notification step of notifying the communication traffic acquired in the acquisition step from each of the plurality of mobile communication systems to the mobile communication system serving as a trunk, and based on the communication traffic notified in the notification step, the mobile communication serving as the trunk The system is a mobile communication system with the highest communication traffic. When the mobile communication system having the largest communication traffic and the mobile communication system using the sharable frequency are different from each other, the main mobile communication system uses the sharable frequency. Stopping wireless communication using the sharable frequency in the mobile communication system, stopping transmission of radio waves of the sharable frequency, and the sharable frequency for the mobile communication system having the largest communication traffic. And a permit step for permitting the use of the wireless link control method. 6. The radio zones provided by the radio base stations overlap each other, and the frequencies used for radio communication between the radio base station and the mobile station in the radio zone are provided so that they can be shared with each other. A wireless line control method for controlling a use state of the sharable frequency between a plurality of mobile communication systems, the priority and communication regarding use of the sharable frequency for each of the plurality of mobile communication systems. A threshold regarding traffic is defined, an acquisition step of acquiring communication traffic of the wireless zone in each of the plurality of mobile communication systems, and the communication traffic acquired in the acquisition step of each of the plurality of mobile communication systems. To notify the main mobile communication system from And the communication traffic notified in the notification step, the main mobile communication system extracts a mobile communication system in which the communication traffic is equal to or more than the threshold, and the extracted mobile communication system If the mobile communication system with the highest priority is further extracted from the above, and the mobile communication system with the highest priority and the mobile communication system using the sharable frequency are different from each other, , Stopping wireless communication using the sharable frequency in a mobile communication system using the sharable frequency, stopping transmission of radio waves of the sharable frequency, and mobile communication with the highest priority. And a permit step of permitting the system to use the sharable frequency. Line control method. 7. The radio zones provided by the radio base stations overlap each other, and the frequencies used for radio communication between the radio base station and the mobile station in the radio zone are provided so that they can be shared with each other. A wireless line control method for controlling the use state of the sharable frequency between a plurality of mobile communication systems, comprising a first acquisition step of acquiring communication traffic of the wireless zone in one mobile communication system. When the communication traffic acquired in the first acquisition step is equal to or more than a predetermined amount, the mobile communication system serving as a main trunk from the one mobile communication system to the shareable frequency of the one mobile communication system. A first request step for requesting the use, and the request in the first request step A second request step of requesting the use of the sharable frequency in the one mobile communication system to another mobile communication system using the sharable frequency from the main mobile communication system; Second acquisition step of acquiring the communication traffic of the wireless zone in the mobile communication system, and if the communication traffic acquired in the second acquisition step is less than a predetermined amount, the sharing is performed in the other mobile communication system. A permitting step of stopping wireless communication using possible frequencies, stopping transmission of radio waves of the sharable frequencies, and allowing the one mobile communication system to use the sharable frequencies. A wireless line control method characterized by the above. 8. The radio zones provided by the radio base stations are overlapped with each other, and the frequencies used for radio communication between the radio base station and the mobile station in the radio zone are provided so that they can be shared with each other. A wireless line control method for controlling a use state of the sharable frequency between a plurality of mobile communication systems, wherein a priority order regarding use of the sharable frequency is determined for each of the plurality of mobile communication systems. And an acquisition step of acquiring communication traffic of the wireless zone in one mobile communication system, and when the communication traffic acquired in the acquisition step is a predetermined amount or more, the one mobile communication system becomes a master. The mobile communication system can be shared by the one mobile communication system. A request step for requesting the use of a different frequency, and according to the request in the request step, the priority of the one mobile communication system is higher than the priority of another mobile communication system using the sharable frequency. In this case, the main mobile communication system stops radio communication using the sharable frequency in the other mobile communication system, stops transmission of radio waves of the sharable frequency, and stops the one mobile communication. And a permitting step for permitting the system to use the sharable frequency. 9. When stopping wireless communication using the sharable frequency and stopping transmission of radio waves of the sharable frequency, a call being communicated on the sharable frequency is transferred to a channel of another frequency. 9. The channel switching is performed, and the transmission of the radio wave of the sharable frequency is stopped after there is no call in communication on the sharable frequency, The radio wave of the sharable frequency is stopped. Wireless line control method. 10. A plurality of sharable frequencies are prepared, and when allowing the use of the sharable frequencies, the sharable frequency is selected from among the plurality of sharable frequencies from which the number of calls in communication is small. The wireless line control method according to any one of claims 2 to 9, wherein priority is given to permission. 11. Each of the plurality of mobile communication systems allocates a channel to an originating call,
11. The radio channel control method according to claim 2, wherein channels of frequencies that cannot be shared with each other are preferentially allocated. 12. A radio zone provided by a radio base station overlaps with each other, and a frequency that can be shared with each other is prepared for a frequency used for radio communication between the radio base station and a mobile station in the radio zone. A wireless line control system for controlling the use state of the sharable frequency between each of a plurality of mobile communication systems, the acquiring unit acquiring the communication traffic of the wireless zone, and the communication acquired by the acquiring unit. A radio line control system comprising: a control unit that controls a use state of the sharable frequency based on traffic. 13. A radio zone provided by a radio base station overlaps with each other, and a frequency which can be shared with each other is prepared for a frequency used for radio communication between the radio base station and a mobile station in the radio zone. A radio link control system for controlling the use state of the frequency that can be shared between a plurality of mobile communication systems, the communication being provided in one mobile communication system, and communicating in the radio zone in the one mobile communication system. A first acquisition unit that acquires traffic and a communication frequency that is provided in the one mobile communication system and is equal to or more than a predetermined amount, and a sharable frequency is used. It is necessary to request another mobile communication system to use the sharable frequency in the one mobile communication system. Means, second acquisition means provided in the other mobile communication system for acquiring communication traffic of the wireless zone in the other mobile communication system, and the second mobile means provided in the other mobile communication system In response to a request from the requesting means of the communication system, the second
When the communication traffic acquired by the acquisition means is less than a predetermined amount, wireless communication using the sharable frequency in the other mobile communication system is stopped, and transmission of radio waves of the sharable frequency is stopped. And a permitting unit that permits the use of the sharable frequency to the one mobile communication system. 14. A radio zone provided by a radio base station overlaps with each other, and a frequency that can be shared with each other is provided for a frequency used for radio communication between the radio base station and a mobile station in the radio zone. A wireless line control system for controlling the use state of the sharable frequency between a plurality of mobile communication systems, wherein a priority order for use of the sharable frequency is determined for each of the plurality of mobile communication systems. A first acquisition unit which is provided in one mobile communication system and which acquires communication traffic of the wireless zone in the one mobile communication system; and a first acquisition unit which is provided in the one mobile communication system. If the communication traffic obtained by the method is more than a predetermined amount, use a shareable frequency Requesting means for requesting the use of the sharable frequency in the one mobile communication system to the other mobile communication system, and the requesting means of the one mobile communication system provided in the other mobile communication system. When the priority of the one mobile communication system is higher than the priority of the other mobile communication system, the wireless communication using the sharable frequency in the other mobile communication system is stopped. A radio line control system, comprising: a permitting unit that suspends transmission of radio waves of the sharable frequency and permits the one mobile communication system to use the sharable frequency. 15. The admission unit of the other mobile communication system, further comprising: a second acquisition unit which is provided in the other mobile communication system and acquires communication traffic of the wireless zone in the other mobile communication system. Is a case where the priority of the one mobile communication system is equal to or lower than the priority of the other mobile communication system in response to a request from the requesting unit of the one mobile communication system, and When the communication traffic acquired by the second acquisition means is less than a predetermined amount, the wireless communication using the sharable frequency in the other mobile communication system is stopped and the radio wave of the sharable frequency is transmitted. 15. The radio line control system according to claim 14, wherein the radio communication system is stopped and the one mobile communication system is allowed to use the sharable frequency. Temu. 16. A radio zone provided by a radio base station overlaps with each other, and a frequency that can be shared with each other is prepared for a frequency used for radio communication between the radio base station and a mobile station in the radio zone. A wireless line control system for controlling the use state of the frequency that can be shared between a plurality of mobile communication systems, the wireless line control system being provided in each of the plurality of mobile communication systems, wherein: Acquisition means for acquiring the communication traffic of the zone, notification means provided in each of the plurality of mobile communication systems, for notifying the mobile communication system serving as the master of the communication traffic acquired by the acquiring means, and the mobile serving as the trunk Provided in a communication system and in front of each of the plurality of mobile communication systems Based on the communication traffic notified from the notification means, the mobile communication system having the largest communication traffic is extracted, and the mobile communication system having the largest communication traffic and the mobile communication system using the sharable frequency are If they are different, the wireless communication using the sharable frequency in the mobile communication system using the sharable frequency is stopped, the transmission of the radio wave of the sharable frequency is stopped, and the maximum communication traffic is generated. A radio line control system comprising: a permitting unit that permits the mobile communication system to use the sharable frequency. 17. A radio zone provided by a radio base station overlaps with each other, and a frequency that can be shared with each other is prepared for a frequency used for radio communication between the radio base station and a mobile station in the radio zone. A wireless line control system for controlling a use state of the sharable frequency between a plurality of mobile communication systems, wherein priority and communication regarding use of the sharable frequency are performed for each of the plurality of mobile communication systems. A threshold value related to traffic is defined, the acquisition unit is provided in each of the plurality of mobile communication systems, and acquires communication traffic of the wireless zone in each of the plurality of mobile communication systems, and the plurality of mobile communication systems. The communication protocol provided in each and acquired by the acquisition means. Notifying means for notifying the mobile communication system serving as the main traffic, and the communication traffic provided on the main mobile communication system, the communication traffic being notified from the notifying means of each of the plurality of mobile communication systems. A mobile communication system having a threshold value or more is extracted, a mobile communication system having the highest priority is extracted from the extracted mobile communication systems, and the mobile communication system having the highest priority can be shared. When the mobile communication system using the frequency is different, the wireless communication using the sharable frequency in the mobile communication system using the sharable frequency is stopped, and the radio wave of the sharable frequency is changed. The transmission is stopped, and the sharable frequency is not used for the mobile communication system with the highest priority. A wireless line control system comprising: a permitting means for permitting. 18. A radio zone provided by a radio base station overlaps with each other, and a frequency that can be shared with each other is prepared for a frequency used for radio communication between the radio base station and a mobile station in the radio zone. A wireless line control system for controlling the use state of the frequency that can be shared between a plurality of mobile communication systems, the wireless line control system being provided in one mobile communication system and communicating in the wireless zone in the one mobile communication system. First acquisition means for acquiring traffic, provided in the one mobile communication system, if the communication traffic acquired by the first acquisition means is a predetermined amount or more, to the mobile communication system to be a trunk, First requesting means for requesting use of the sharable frequency in the one mobile communication system, and the master And a mobile communication system that uses a frequency that can be shared in response to a request from the first requesting unit of the one mobile communication system. Second requesting means for requesting use of the sharable frequency in the system, and second acquiring means provided in the other mobile communication system for acquiring communication traffic of the wireless zone in the other mobile communication system. And the communication traffic acquired by the second acquisition unit in response to a request from the second request unit of the mobile communication system which is provided in the other mobile communication system and is less than a predetermined amount. In this case, the wireless communication using the sharable frequency in the other mobile communication system is stopped, and the transmission of radio waves of the sharable frequency is stopped, Wireless line control system is characterized in that a permissible means for serial to one of the mobile communication system allows the use of the shareable frequency. 19. A radio zone provided by a radio base station overlaps with each other, and a frequency that can be shared with each other is prepared for a frequency used for radio communication between the radio base station and a mobile station in the radio zone. A wireless line control system for controlling the use state of the sharable frequency among a plurality of mobile communication systems, wherein a priority order regarding use of the sharable frequency is determined for each of the plurality of mobile communication systems. And an acquisition unit that is provided in one mobile communication system and that acquires communication traffic in the wireless zone in the one mobile communication system; and an acquisition unit that is provided in the one mobile communication system and acquired by the acquisition unit. If the communication traffic exceeds a certain amount, the Requesting means for requesting use of the sharable frequency in the one mobile communication system; and the requesting means of the mobile communication system, which is provided in the main mobile communication system, in response to a request from the requesting means of the one mobile communication system. When the priority of the mobile communication system is higher than the priority of another mobile communication system using the sharable frequency, the wireless communication using the sharable frequency in the other mobile communication system is stopped. And a permitting means for stopping the transmission of the radio wave of the sharable frequency and permitting the use of the sharable frequency to the one mobile communication system. 20. When the wireless communication using the sharable frequency is stopped and the transmission of the radio wave of the sharable frequency is stopped, the call being communicated on the sharable frequency is transferred to a channel of another frequency. 20. The channel switching is performed, and the transmission of the radio wave of the sharable frequency is stopped after there is no call in communication on the sharable frequency, The transmission of the radio wave of the sharable frequency is stopped. Wireless line control system. 21. A plurality of sharable frequencies are prepared, and when permitting the use of the sharable frequencies, the sharable frequency is selected from the plurality of sharable frequencies from which the number of calls in communication is small. 21. The wireless line control system according to claim 13, wherein the wireless line control system is preferentially permitted. 22. Each of the plurality of mobile communication systems allocates a channel to an originating call,
22. The wireless line control system according to claim 13, wherein channels with frequencies that cannot be shared with each other are preferentially assigned. 23. The radio zones provided by the radio base stations are overlapped with each other, and the frequencies used for radio communication between the radio base station and the mobile station in the radio zone are provided so that they can be shared with each other. A radio line control station that constitutes a radio line control system for controlling the use state of the frequency that can be shared between a plurality of mobile communication systems, the radio line control station being provided in one mobile communication system, An acquisition unit that acquires the communication traffic of the wireless zone in the system, and if the communication traffic acquired by the acquisition unit is a predetermined amount or more, with respect to another mobile communication system using a sharable frequency, Request means for requesting use of the sharable frequency in one mobile communication system. The wireless line control station to collect. 24. The radio zones provided by the radio base stations are overlapped with each other, and the frequencies used for radio communication between the radio base station and the mobile station in the radio zone are provided so that they can be shared with each other. A radio line control station that constitutes a radio line control system for controlling the use state of the frequency that can be shared between a plurality of mobile communication systems, the radio line control station being provided in one mobile communication system, In the case where the communication traffic acquired by the acquisition means is less than a predetermined amount in response to a request from the other mobile communication system to use the sharable frequency in the wireless zone in the system. , Stopping the wireless communication using the sharable frequency in the one mobile communication system to perform the sharing. A radio network controller comprising: a permitting unit that suspends transmission of radio waves of possible frequencies and permits the other mobile communication system to use the sharable frequencies. 25. The radio zones provided by the radio base stations are overlapped with each other, and the frequencies used for radio communication between the radio base station and the mobile station in the radio zone are provided so that they can be shared with each other. A radio line control station that constitutes a radio line control system for controlling the use state of the sharable frequency between a plurality of mobile communication systems, wherein the sharable frequency is for each of the plurality of mobile communication systems. Is set in one mobile communication system, and the priority of the other mobile communication system is set according to a request from another mobile communication system to use the sharable frequency. If the priority is higher than that of the one mobile communication system, the shareable frequency in the one mobile communication system is Stopping wireless communication using the wave number, stopping transmission of radio waves of the sharable frequency, and allowing the other mobile communication system to use the sharable frequency. Characteristic wireless line control station. 26. The mobile communication system further comprises acquisition means for acquiring communication traffic of the wireless zone in the one mobile communication system, wherein the permitting means responds to a request for use of the sharable frequency from the other mobile communication system. Accordingly, when the priority of the other mobile communication system is equal to or lower than the priority of the one mobile communication system, and when the communication traffic acquired by the acquisition means is less than a predetermined amount, The wireless communication using the sharable frequency in the one mobile communication system is stopped, the transmission of radio waves of the sharable frequency is stopped, and the sharable frequency is used for the other mobile communication system. 26. The radio network controller according to claim 25, characterized in that 27. The radio zones provided by the radio base station overlap each other, and the frequencies used for radio communication between the radio base station and the mobile station in the radio zone are provided so that they can be shared with each other. A radio line control station that constitutes a radio line control system for controlling the use state of the frequency that can be shared between a plurality of mobile communication systems, the radio line control station being provided in one mobile communication system, A radio network controller, comprising: an acquisition unit that acquires communication traffic in the wireless zone of the system; and a notification unit that notifies the mobile communication system, which is the main trunk, of the communication traffic acquired by the acquisition unit. 28. The radio zones provided by the radio base station overlap each other, and the frequencies used for radio communication between the radio base station and the mobile station in the radio zone are provided so that they can be shared with each other. A plurality of mobile communication systems, each of which is provided in a main mobile communication system and is a radio circuit control station that constitutes a radio line control system that controls a use state of the frequency that can be shared among a plurality of mobile communication systems. Based on the communication traffic of the wireless zone in each of the plurality of mobile communication systems notified from each communication system, the mobile communication system having the largest communication traffic is extracted, and the mobile communication system having the largest communication traffic can be shared with the mobile communication system having the largest communication traffic. If the mobile communication system using different frequencies is different, In the mobile communication system using the sharable frequency, the radio communication using the sharable frequency is stopped, the transmission of the radio wave of the sharable frequency is stopped, and the mobile communication system with the largest communication traffic A radio network controller comprising: a permitting means for permitting the use of the sharable frequency to the. 29. The radio zones provided by the radio base stations are overlapped with each other, and the frequencies used for radio communication between the radio base station and the mobile station in the radio zone are provided so that they can be shared with each other. A radio line control station that constitutes a radio line control system for controlling the use state of the sharable frequency between a plurality of mobile communication systems, wherein the sharable frequency is for each of the plurality of mobile communication systems. Of the priority and the threshold for communication traffic are defined, provided in the main mobile communication system, the radio in each of the plurality of mobile communication systems notified from each of the plurality of mobile communication systems. Based on the communication traffic of the zone, the communication traffic is the threshold value The upper mobile communication system is extracted, the mobile communication system with the highest priority is extracted from the extracted mobile communication systems, and the mobile communication system with the highest priority is used with the sharable frequency. If the mobile communication system is different from the mobile communication system, the wireless communication using the sharable frequency in the mobile communication system using the sharable frequency is stopped, and the transmission of radio waves of the sharable frequency is stopped. A radio network controller comprising: a permitting unit that permits use of the sharable frequency for the mobile communication system having the highest priority. 30. The radio zones provided by the radio base stations are overlapped with each other, and the frequencies used for radio communication between the radio base station and the mobile station in the radio zone are provided so that they can be shared with each other. A wireless line control station that constitutes a wireless line control system that controls the use state of the frequency that can be shared among a plurality of mobile communication systems, the wireless line control station being provided in one mobile communication system, Acquisition means for acquiring the communication traffic of the wireless zone in the system, and when the communication traffic acquired by the acquisition means is a predetermined amount or more, the sharing in the one mobile communication system with respect to the main mobile communication system A radio network controller comprising: requesting means for requesting use of possible frequencies. 31. The radio zones provided by the radio base stations overlap each other, and the frequencies used for radio communication between the radio base station and the mobile station in the radio zone are provided so that they can be shared with each other. A radio line control station that constitutes a radio line control system that controls the use state of the frequency that can be shared among a plurality of mobile communication systems, and is provided in the main mobile communication system. A request for requesting the use of the sharable frequency in the one mobile communication system to another mobile communication system using the sharable frequency in response to a request from the system to use the sharable frequency. A wireless circuit control station comprising means. 32. The radio zones provided by the radio base stations are overlapped with each other, and the frequencies used for radio communication between the radio base station and the mobile station in the radio zone are provided so that they can be shared with each other. A wireless line control station that constitutes a wireless line control system that controls the use state of the frequency that can be shared among a plurality of mobile communication systems, the wireless line control station being provided in one mobile communication system, The acquisition means acquires the communication traffic of the wireless zone in the system and the acquisition means in response to a request for use of the sharable frequency in another mobile communication system transmitted from the main mobile communication system. If the communication traffic is less than a predetermined amount, the sharing is possible in the one mobile communication system. A wireless communication using a common frequency, a transmission of radio waves of the sharable frequency to stop, and a permitting means for permitting the other mobile communication system to use the sharable frequency. A wireless line control station. 33. The radio zones provided by the radio base stations overlap each other, and the frequencies used for radio communication between the radio base station and the mobile station in the radio zone are provided so that they can be shared with each other. A radio line control station that constitutes a radio line control system for controlling the use state of the sharable frequency between a plurality of mobile communication systems, wherein the sharable frequency is for each of the plurality of mobile communication systems. Is set in the main mobile communication system, and the priority of the one mobile communication system is set according to the request from the one mobile communication system to use the sharable frequency. If the priority of the other mobile communication system using the sharable frequency is higher than the priority of the other mobile communication system, Permission to stop radio communication using the sharable frequency in the communication system, stop transmission of radio waves of the sharable frequency, and allow the one mobile communication system to use the sharable frequency A wireless circuit control station comprising means. 34. When the wireless communication using the sharable frequency is stopped and the transmission of the radio wave of the sharable frequency is stopped, the call being communicated on the sharable frequency is transferred to a channel of another frequency. The channel switching is performed, and the transmission of the radio wave of the sharable frequency is stopped after there is no call in communication at the sharable frequency, The radio waves of the sharable frequency are stopped. ，
33. The radio network controller according to any one of 33. 35. A plurality of the sharable frequencies are prepared, and when permitting the use of the sharable frequencies, the sharable frequency is selected from the plurality of the sharable frequencies from which the number of calls in communication is small. The wireless line control station according to any one of claims 24, 25, 26, 28, 29, 32 and 33, which is preferentially permitted. 36. When allocating a channel to a generated call, channels of frequencies that cannot be shared with each other are preferentially allocated.
35. The radio network controller according to any one of 35.