WO2017208874A1 - Communication system, base station device, and dynamic radio resource control method - Google Patents

Communication system, base station device, and dynamic radio resource control method Download PDF

Info

Publication number
WO2017208874A1
WO2017208874A1 PCT/JP2017/018953 JP2017018953W WO2017208874A1 WO 2017208874 A1 WO2017208874 A1 WO 2017208874A1 JP 2017018953 W JP2017018953 W JP 2017018953W WO 2017208874 A1 WO2017208874 A1 WO 2017208874A1
Authority
WO
WIPO (PCT)
Prior art keywords
base station
radio resource
cell
control
communication
Prior art date
Application number
PCT/JP2017/018953
Other languages
French (fr)
Japanese (ja)
Inventor
洋明 網中
大 金友
則夫 山垣
松永　泰彦
彦 本吉
Original Assignee
日本電気株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日本電気株式会社 filed Critical 日本電気株式会社
Priority to JP2018520806A priority Critical patent/JPWO2017208874A1/en
Publication of WO2017208874A1 publication Critical patent/WO2017208874A1/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/04—Traffic adaptive resource partitioning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/06—Hybrid resource partitioning, e.g. channel borrowing
    • H04W16/08—Load shedding arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/22—Performing reselection for specific purposes for handling the traffic

Definitions

  • the present invention relates to a communication system, a base station apparatus, and a dynamic radio resource control method, and more particularly, to a communication system, a base station apparatus, and a dynamic radio resource control method for dynamically controlling radio resources.
  • Non-Patent Document 1 introduced LTE (Long Term Term Evolution) in the 200 MHz band, which is a public frequency, at the radio wave policy vision round-table meeting of the Ministry of Internal Affairs and Communications, and LTE for the public (Public Safety LTE: PS-LTE). It is disclosed that the construction promotion of the disaster prevention wireless network is proposed.
  • LTE Long Term Term Evolution
  • PS-LTE Public Safety LTE
  • the public network is used for rescue operations and security. In such a use, since communication interruption may be fatal, high reliability is required for public network communication. However, it is not possible to know where and when disasters or incidents occur, so it is not possible to set up a temporary communication infrastructure in advance. In addition, designing all communication infrastructures in the event of a disaster or incident is not practical from a cost standpoint.
  • Patent Document 1 when the base station transmits ETWS (Earthquake and TsunaminWarning System) information from the core network to the mobile terminal, the total amount of traffic in the own cell is equal to or greater than a first predetermined value. It is disclosed that an emergency communication resource block is secured by determining that the predicted condition is satisfied and reducing the resource block allocated to the mobile terminal in the own cell.
  • ETWS Earthquake and TsunaminWarning System
  • Patent Document 1 has a problem that even if the allocated resource blocks are reduced, a necessary amount of resource blocks may not be secured for emergency communication.
  • the present invention has been made to solve such problems, and is capable of ensuring high reliability quickly and flexibly for important communications, a base station apparatus, and dynamic radio.
  • An object is to provide a resource control method.
  • a communication system includes a first base station that operates a first cell, and a second base station that operates a second cell, wherein the first base station Is a radio resource enhancement control that is performed in association with the second base station, in association with the second base station, due to an event related to important communication, and that can be assigned to a specific area or a specific mobile station group related to the important communication. It has a part.
  • the base station apparatus controls the enhancement of radio resources that can be allocated to a specific region or a specific mobile station group related to the important communication due to an event related to the important communication to another base.
  • a radio resource augmentation control unit that performs in cooperation with a station is provided.
  • the dynamic radio resource control method in the base station according to the third aspect of the present invention is the increase of radio resources that can be allocated to a specific region or a specific mobile station group related to the important communication due to an event related to the important communication.
  • the control includes a step of performing control in cooperation with another base station.
  • the present invention it is possible to provide a communication system, a base station apparatus, and a dynamic radio resource control method capable of ensuring high reliability quickly and flexibly for important communication.
  • FIG. 1 is a diagram illustrating a schematic configuration example of a communication system 100 according to the first embodiment of the present invention.
  • the communication system 100 according to the present embodiment will be described using OFDMA (Orthogonal Frequency Division Multiple Access), more specifically, an LTE wireless communication system as an example.
  • OFDMA Orthogonal Frequency Division Multiple Access
  • the communication system 100 includes a base station 1_1, a base station 1_2, and a core network 3.
  • two base stations, base station 1_1 and base station 1_2 are shown as base stations included in communication system 100, but the number of base stations is not limited to two.
  • FIG. 1 shows a configuration in which the base station 1_1 and the base station 1_2 are connected via the core network 3, but the base station 1_1 and the base station 1_2 can directly communicate with each other by wire or wirelessly. It is good also as a structure.
  • communication between the base station 1_1 and the base station 1_2 via the core network 3 will be described.
  • the base station 1_1 and the base station 1_2 form and operate a cell 10_1 and a cell 10_2, respectively. Further, as shown in FIG. 1, the mobile station 2_1 located in the cell 10_1 belongs to the base station 1_1 and performs two-way wireless communication with the base station 1_1. Similarly, the mobile station 2_2 located in the cell 10_2 belongs to the base station 1_2 and performs bidirectional wireless communication with the base station 1_2.
  • the base station 1_1 and the base station 1_2 may be collectively referred to by reference numeral 1
  • the cell 10_1 and the cell 10_2 may be collectively referred to by reference numeral 10
  • the mobile station 2_1 and mobile station 2_2 may be collectively referred to by reference numeral 2.
  • the number of mobile stations belonging to each base station is plural.
  • the base station 1 is connected to the core network 3 of the mobile carrier.
  • the mobile station 2 is connected to the core network 3 via the base station 1.
  • the base station 1 relays traffic between the mobile station 2 and the core network 3.
  • the base station 1_1 and the base station 1_2 are described as being managed by the same operator, but the base station 1_1 and the base station 1_2 are managed by different operators. It is good also as a thing. Further, the base station 1_1 and the base station 1_2 may have different systems, such that one is an LTE base station and the other is a business radio base station. That is, the cell 10_1 and the cell 10_2 may overlap in position.
  • the base station 1 includes a radio resource enhancement control unit 11.
  • the radio resource enhancement control unit 11 performs enhancement control of radio resources that can be allocated to a specific region or a specific mobile station group related to the important communication in association with other base stations due to an event related to the important communication. It has a function.
  • the radio resource enhancement control unit 11 of the base station 1_1 when important communication occurs in the cell 10_1 in FIG. 1, the radio resource enhancement control unit 11 of the base station 1_1 causes an event related to important communication that occurs in the cell 10_1, Radio resource enhancement control that can be assigned to a specific region or a specific mobile station group related to important communication is performed in cooperation with the base station 1_2.
  • the radio resource enhancement control unit 11 of the base station 1_1 causes the mobile station located in the cell 10_1 to belong to the base station 1_2 and performs control to reduce the number of mobile stations belonging to the base station 1_1. This increases the radio resources that can be allocated to a specific area or a specific mobile station group related to important communication in the cell 10_1.
  • the radio resource enhancement control unit 11 of the base station 1_1 causes an event related to important communication that occurs in the cell 10_2, Radio resource enhancement control that can be assigned to a specific region or a specific mobile station group related to important communication is performed in cooperation with the base station 1_2.
  • the radio resource enhancement control unit 11 of the base station 1_1 causes the mobile station located in the cell 10_2 to belong to the base station 1_1 and performs control to reduce the number of mobile stations belonging to the base station 1_2. This increases the radio resources that can be allocated to a specific area or a specific mobile station group related to important communication in the cell 10_2.
  • the base station 1 is configured to include the radio resource enhancement control unit 11.
  • the radio resource enhancement control unit 11 As described above, in the communication system 100 according to the first embodiment of the present invention, the base station 1 is configured to include the radio resource enhancement control unit 11.
  • FIG. 2 is a diagram illustrating a schematic configuration example of a communication system 100A according to the second embodiment.
  • the communication system 100 ⁇ / b> A includes a base station 1 ⁇ / b> A instead of the base station 1 with respect to the configuration of the communication system 100.
  • the communication system 100A includes a core network 3A instead of the core network 3.
  • the core network 3 ⁇ / b> A includes a data processing unit 4.
  • the data processing unit 4 is a logical functional unit that collects and analyzes information about events related to important communications.
  • the data processing unit 4 is provided in a host device of the base station 1A in the core network 3A.
  • the data processing unit 4 may be provided in the base station 1A_1, the base station 1A_2, the mobile station 2, the host device of the base station 1A outside the core network 3A, and the like.
  • the host device of the base station 1A outside the core network 3A is, for example, a server of a virtual mobile communication carrier (MVNO: Mobile Virtual Network Operator).
  • MVNO Virtual Mobile Virtual Network Operator
  • FIG. 3 is a block diagram illustrating a configuration example of the data processing unit 4 according to the second embodiment.
  • the data processing unit 4 includes a communication unit 41, a reception data processing unit 42, an important communication event detection unit 43, and a transmission data processing unit 44.
  • the communication unit 41 transmits and receives signals to and from the base station 1A via the core network 3A. Moreover, the communication part 41 is good also as a structure which can communicate with apparatuses other than the base station 1A via the internet.
  • the communication unit 41 outputs the received signal to the reception data processing unit 42. Further, the communication unit 41 receives a radio resource enhancement request and a radio resource enhancement notification or a cooperation request from the transmission data processing unit 44. And the communication part 41 transmits a radio
  • the received data processing unit 42 restores the received signal.
  • the reception data processing unit 42 determines whether the restored signal is information related to important communication.
  • the information related to important communication is information necessary to detect an event related to important communication.
  • the information is, for example, detection data by a camera, a sensor, etc., dispatch commands from the fire department, the police, and the like. If it is determined that the information is related to important communication, the reception data processing unit 42 outputs information related to the important communication to the important communication event detecting unit 43.
  • the important communication event detection unit 43 detects an event related to important communication based on the received information related to important communication.
  • the event related to important communication is, for example, an event related to important communication that occurs unexpectedly or an event related to important communication related to unexpected occurrence prediction.
  • the important communication event detection unit 43 suddenly occurs when the received information related to important communication is a direct disaster data, incident or event detection data by the camera or sensor, or a fire or police dispatch command. Detect as an event related to important communication.
  • the important communication event detection unit 43 detects an event related to important communication related to sudden occurrence prediction when the received information related to important communication is detection data of a suspicious person by a camera or a sensor. Furthermore, in the case of data obtained from SNS (Social Networking Service) on the Internet, big data analysis is performed, and when a disaster or incident is predicted, it is an event related to important communication regarding sudden occurrence prediction To detect.
  • SNS Social Networking Service
  • the important communication event detecting unit 43 determines a specific area related to the important communication.
  • the specific area indicates a geographical area.
  • the important communication event detection unit 43 specifies a base station that operates a cell including a specific area related to important communication.
  • the base station 1A_2 is specified as a base station that operates a cell including a specific area related to important communication.
  • the important communication event detection unit 43 determines the base station 1A_1 as the base station that cooperates with the base station 1A_2.
  • the important communication event detection unit 43 may determine a specific mobile station group corresponding to the specific area.
  • the specific mobile station group may be a mobile station group of public organizations such as the police and fire department, a mobile station group of event-related persons, or the like.
  • the important communication event detection unit 43 generates a radio resource enhancement request for transmission to the base station 1A_2.
  • the radio resource enhancement request is a message requesting the base station 1A_2 to augment the radio resource of the cell 10_2.
  • the radio resource enhancement request includes information on the base stations to be linked, that is, information for identifying the base station 1A_1.
  • the radio resource enhancement request includes at least one of information indicating a specific area and a specific mobile station group related to important communication.
  • the important communication event detection unit 43 generates a radio resource enhancement notification for transmission to the base station 1A_1.
  • the radio resource increase notification is a message notifying the base station 1A_1 that the base station 1A_2 increases the radio resource.
  • the important communication event detection unit 43 may generate a cooperation request for transmitting to the base station 1A_1 and the base station 1A_2 instead of generating the radio resource enhancement request and the radio resource enhancement notification.
  • the cooperation request is a message for requesting cooperation between the base station 1A_1 and the base station 1A_2.
  • the cooperation request includes at least one of information indicating a specific area related to important communication and a specific mobile station group.
  • the cooperation request may include information on the base stations to be cooperated, that is, information for identifying the base stations 1A_1 and 1A_2.
  • the cooperation request includes information on a base station to cooperate with will be described.
  • An example in which the cooperation request does not include information on the base station to cooperate with will be described later with reference to FIG.
  • the important communication event detection unit 43 outputs the generated radio resource enhancement request and radio resource enhancement notification or cooperation request to the transmission data processing unit 44.
  • the transmission data processing unit 44 outputs the received radio resource enhancement request and radio resource enhancement notification or cooperation request to the communication unit 41.
  • FIG. 4 is a flowchart showing a processing example of the data processing unit 4 according to the second embodiment.
  • the data processing unit 4 determines whether an event related to important communication is detected at a predetermined timing (step S101).
  • step S101 If it is determined in S101 that an event related to important communication has been detected (Yes in step S101), a radio resource enhancement request and a radio resource enhancement notification or a cooperation request are transmitted to the corresponding base station (step S102).
  • step S101 If it is determined in S101 that an event related to important communication has not been detected (No in step S101), the process returns to step S101 for determining event detection again.
  • FIG. 5 is a block diagram of a configuration example of the base station 1A according to the second embodiment.
  • the base station 1A includes a radio resource enhancement control unit 11A, a radio communication unit 12, a reception data processing unit 13, a communication unit 14, and a transmission data processing unit 15.
  • the base station 1A performs processing related to the uplink signal by the wireless communication unit 12, the reception data processing unit 13, and the communication unit 14, but the processing related to the uplink signal is basically the same as normal processing. Therefore, explanation is omitted.
  • the communication unit 14 outputs the data received from the core network 3A to the transmission data processing unit 15.
  • the transmission data processing unit 15 determines whether the data received from the communication unit 14 is data for a mobile station or information on radio resource enhancement. If it is determined that the data is for mobile stations, the transmission data processing unit 15 stores the received mobile station data in a buffer set for each mobile station and for each bearer, and performs error correction coding, rate matching, and interleaving. Etc. to generate a transport channel. Further, the transmission data processing unit 15 generates a radio frame by adding control information to the data sequence of the transport channel. Then, the generated wireless frame is output to the wireless communication unit 12.
  • the transmission data processing unit 15 If it is determined that the data received from the communication unit 14 is information related to radio resource enhancement, the transmission data processing unit 15 outputs the information to the radio resource enhancement control unit 11A.
  • the information related to radio resource enhancement is a radio resource enhancement request, a radio resource enhancement notification, linkage information, or a linkage request.
  • the transmission data processing unit 15 when the transmission data processing unit 15 receives the radio resource control information from the radio resource enhancement control unit 11A, the transmission data processing unit 15 performs a process similar to the above-described process to generate a radio frame including the radio resource control information. Then, the generated wireless frame is output to the wireless communication unit 12.
  • the radio resource control information is radio resource addition information for notifying addition of radio resources, or belonging base station information for causing the mobile station to change the belonging base station.
  • the radio resource enhancement control unit 11A receives information related to radio resource enhancement from the transmission data processing unit 15.
  • the radio resource enhancement control unit 11A When the radio resource enhancement control unit 11A receives a radio resource enhancement request as information on radio resource enhancement, the radio resource enhancement control unit 11A generates cooperation information based on information included in the radio resource enhancement request.
  • the cooperation information includes requested area information indicating a geographical area for which operation is requested from another base station, or requested mobile station information indicating a mobile station that requests attribution from another base station. Information.
  • the radio resource enhancement control unit 11A recognizes the base station that is the destination of the cooperation information based on the information on the cooperating base stations included in the radio resource enhancement request. Then, the radio resource enhancement control unit 11A outputs the generated cooperation information and information indicating the destination to the reception data processing unit 13. Thereafter, the radio resource enhancement control unit 11A generates radio resource control information and outputs it to the transmission data processing unit 15.
  • the wireless resource enhancement control unit 11A determines whether the cooperation information is received. When the cooperation information has not been received, the radio resource enhancement control unit 11A waits for reception of the cooperation information. And when cooperation information is received as information regarding radio resource enhancement, the radio resource enhancement control unit 11A performs radio resource enhancement control based on information included in the cooperation information. Specifically, when the information included in the cooperation information is requested area information, the radio resource enhancement control unit 11A performs control for operating the requested geographical area in its own station based on the requested area information, that is, Control is performed to add the radio resource of the own station as the radio resource of the requested area. Further, when the information included in the cooperation information is requested mobile station information, the radio resource enhancement control unit 11A performs control for causing the requested mobile station to belong to the own station based on the requested mobile station information.
  • the radio resource enhancement control unit 11A receives a cooperation request as information relating to radio resource enhancement, a specific area or a specific mobile station group related to important communication is included in the own cell based on the information included in the cooperation request. It is determined whether or not it is located.
  • the radio resource enhancement control unit 11A When the specific area or the specific mobile station group is located in the own cell, the radio resource enhancement control unit 11A generates cooperation information based on the information included in the cooperation request.
  • the linkage information is the same information as the linkage information described above.
  • wireless resource augmentation control parts determine the base station used as the destination of cooperation information based on the information of the cooperation base station contained in a cooperation request
  • the radio resource enhancement control unit 11A determines whether or not the cooperation information is received as information regarding the radio resource enhancement. When the cooperation information has not been received, the radio resource enhancement control unit 11A waits for reception of the cooperation information. And when cooperation information is received as information regarding radio resource enhancement, the radio resource enhancement control unit 11A performs radio resource enhancement control based on information included in the cooperation information.
  • the reception data processing unit 13 When the reception data processing unit 13 receives the cooperation information and the information indicating the destination from the radio resource enhancement control unit 11A, the reception data processing unit 13 transmits the cooperation information to the destination base station via the communication unit 14.
  • the wireless communication unit 12 receives a wireless frame from the transmission data processing unit 15. In addition, the wireless communication unit 12 performs a process such as orthogonal modulation of the transmission symbol sequence, frequency conversion, and signal amplification on the received wireless frame to generate a downlink signal. Then, the wireless communication unit 12 transmits the generated downlink signal to the mobile station 2 via the antenna.
  • reception data processing unit 13 and the transmission data processing unit 15 have the same functions as the reception data processing unit 42 of the data processing unit 4. Further, the reception data processing unit 13 and the transmission data processing unit 15 have the same functions as the transmission data processing unit 44 of the data processing unit 4.
  • the radio resource enhancement control unit 11A has the same function as the important communication event detection unit 43 of the data processing unit 4. Note that the radio resource enhancement control unit 11A does not generate a radio resource enhancement request when it is determined that the base station in which an event related to important communication has occurred is its own station. Also, the radio resource enhancement control unit 11A does not generate a radio resource enhancement notification when it is determined that the base station that cooperates with the base station in which the event related to the important communication has occurred is its own station.
  • the base station that cooperates with the base station performs radio resource enhancement control based on the cooperation information from the base station that operates the cell including the specific area related to the important communication.
  • the base station that cooperates with the base station performs radio resource enhancement control based on the cooperation information from the base station that operates the cell including the specific area related to the important communication.
  • the base station 1A determines whether or not a radio resource enhancement request has been received at a predetermined timing (step S201).
  • step S201 If a wireless resource enhancement request has been received (Yes in step S201), link information is generated and transmitted to the linked base station (step S202). After step S202, radio resource control information is generated and transmitted to the target mobile station (step S203).
  • step S204 it is determined whether a radio resource enhancement notification has been received. If the wireless resource enhancement notification has not been received (No in step S204), the process returns to step S201 for determining reception of the wireless resource enhancement control request again.
  • step S204 when the wireless resource augmentation notification is received (Yes in step S204), it is determined whether or not cooperation information is received (step S205). If the cooperation information has not been received (No in step S205), the process returns to step S205 for determining the reception of the cooperation information again.
  • radio resource enhancement control is performed based on information included in the cooperation information (step S206).
  • the base station 1A determines whether or not a cooperation request has been received at a predetermined timing (step S301).
  • step S301 If the cooperation request has not been received (No in step S301), the process returns to step S301 for determining the reception of the cooperation request again.
  • step S301 when the cooperation request is received (Yes in step S301), it is determined whether the important communication is located in the own cell (step S302). That is, it is determined whether a specific area or a specific mobile station group related to important communication is located in the own cell.
  • step S302 When the important communication is located in the own cell (Yes in step S302), the link information is generated and transmitted to the link base station (step S303). After step S303, radio resource control information is generated and transmitted to the target mobile station (step S304).
  • Step S305 it is determined whether or not the cooperation information is received. If the cooperation information has not been received (No in step S305), the process returns to step S305 in which the reception of the cooperation information is determined again.
  • radio resource enhancement control is performed based on information included in the cooperation information (Step S306).
  • FIG. 8 is a block diagram of a configuration example of the mobile station 2 according to the second embodiment.
  • the mobile station 2 includes a radio communication unit 21, a reception data processing unit 22, a radio resource control unit 23, and a transmission data processing unit 24.
  • the radio communication unit 21 receives a downlink radio frame via an antenna.
  • the wireless communication unit 21 outputs the received wireless frame to the reception data processing unit 22.
  • the reception data processing unit 22 restores the reception data from the received radio frame.
  • the reception data processing unit 22 determines whether the restored reception data is radio resource control information. Since the process when it is not radio resource control information is basically the same as a normal process, description thereof is omitted.
  • the reception data processing unit 22 outputs the radio resource control information to the radio resource control unit 23.
  • the radio resource control unit 23 performs radio resource control based on the radio resource control information. For example, when the radio resource control information is radio resource addition information, carrier aggregation is performed in which the added radio resource is added as a radio resource used by the own station. In addition, when the radio resource control information is attributed base station information, handover of the attributed base station information to the base station is performed.
  • the mobile station 2 may include a camera, a sensor, and the like for detecting disasters, incidents, events, suspicious persons, and the like. In that case, the mobile station 2 may transmit information such as a disaster, an incident, an event, and a suspicious person to the data processing unit 4 using the wireless communication unit 21 as information related to important communication.
  • the reception data processing unit 22 has the same function as the reception data processing unit 42 of the data processing unit 4.
  • the radio resource control unit 23 has the same function as the important communication event detection unit 43 of the data processing unit 4.
  • the transmission data processing unit 24 has the same function as the transmission data processing unit 44 of the data processing unit 4.
  • FIG. 9 is a flowchart of a process example of the mobile station 2 according to the second embodiment. It is determined whether radio resource enhancement information has been received from the base station at a predetermined timing (step S401).
  • step S401 If the radio resource control information has not been received (No in step S401), the process returns to step S401 for determining reception of the radio resource control information again.
  • Step S401 when the radio resource control information is received (Yes in step S401), the radio resource control is executed based on the radio resource control information. (Step S402).
  • the base station 1A_1 performs radio resource enhancement control based on the cooperation information from the base station 1A_2 that operates the cell 10_2 including the specific area related to the important communication.
  • step S501 it is indicated that the mobile station 2 belongs to the cell 10_2 formed by the base station 1A_2.
  • the data processing unit 4 detects an event related to important communication (step S502). Next, the data processing unit 4 transmits a radio resource enhancement notification to the base station 1A_1 (step S503), and transmits a radio resource enhancement request to the base station 1A_2 (step S504). Next, base station 1A_2 transmits cooperation information to base station 1A_1 (step S505).
  • the base station 1A_1 performs radio resource enhancement control based on the cooperation information (step S506). Further, the base station 1A_2 transmits radio resource control information to the mobile station 2 (step S507).
  • the mobile station 2 performs radio resource control based on the radio resource control information (step S508).
  • the radio resource control information is attributed base station information is shown.
  • the mobile station 2 is connected to the base station 1A_1 by executing the radio resource control.
  • the radio resource control information is radio resource addition information, for example, carrier aggregation is performed as radio resource control.
  • the mobile station 2 is connected to both the base station 1A_1 and the base station 1A_2.
  • FIG. 11 is an example in the case where the cooperation request includes information on the base stations to cooperate with. Note that steps S601, S602, and S606 to S609 in FIG. 11 are the same as steps S501, S502, and S506 to S509 in FIG.
  • step S602 After detecting an event related to important communication (step S602), the data processing unit 4 transmits a cooperation request to the base station 1A_1 and the base station 1A_2 (steps S603 and S604). Next, base station 1A_2 transmits cooperation information to base station 1A_1 (step S605).
  • FIG. 12 is an example in the case where the cooperation request does not include information on the base stations to cooperate with. That is, the data processing unit 4 specifies the base station 1A_2 that operates the cell 10_2 including the specific area related to important communication, but does not determine the base station that cooperates with the base station 1A_2. Note that steps S701, S702, S709, and S710 in FIG. 12 are the same as steps S601, S602, S608, and S609 in FIG.
  • the data processing unit 4 After detecting an event related to important communication (step S702), the data processing unit 4 is positioned with respect to the base station 1A_2 that operates the cell 10_2 including the specific area related to important communication and the cell adjacent to the cell 10_2 or the cell 10_2. A cooperation request is transmitted to a plurality of base stations that operate overlapping cells (steps S703 and S704).
  • the base station 1A_2 transmits cooperation information to a plurality of base stations that operate a cell adjacent to the cell 10_2 or a cell that overlaps with the cell 10_2 (step S705).
  • the base station that has received the cooperation request in step S703 and has received the cooperation information in step S705 determines whether or not cooperation with the base station 1A_2 is possible.
  • the base station 1A_2 receives ACK ( Acknowledgment) is transmitted (step S706).
  • the base station that can be linked may transmit the information of the radio resource to be added to the base station 1A_2 or the identification information of the own station together with the ACK.
  • the base station that transmitted the ACK in step S706 performs radio resource enhancement control based on the cooperation information (step S707).
  • the base station 1A_2 After receiving the ACK (step S706), the base station 1A_2 generates radio resource control information and transmits it to the mobile station 2 (step S708).
  • the radio resource control information transmitted by the base station 1A_2 is the radio resource additional information added by the base station that transmitted the ACK, or the attribution destination for changing the belonging base station to the base station that transmitted the ACK. Base station information and the like.
  • the radio resource enhancement control is cell range control or traffic offload control. That is, it is control or traffic offload control of at least one cell range of the cell 10_1 and the cell 10_2.
  • the cell range control is control performed by changing at least one of the antenna tilt angle of the base station 1A, the antenna azimuth angle of the base station 1A, the transmission power of the base station 1A, and the handover threshold of the cell 10. is there.
  • the base station 1A_2 covers a cell range of the cell 10_2 in which important communication is located so that it covers a specific area or a specific mobile station group related to important communication, but does not cover other areas or mobile stations. Then, control is performed so that the range that is no longer covered is compensated by the cell 10_1 of the base station 1A_1.
  • the base station 1A_2 does not change the cell range of the cell 10_2 where the important communication is located, and the base station 1A_1 covers the cell range of the cell 10_1 to a specific area or a specific mobile station group related to the important communication. You may control to make it overlay. In this case, the frequency of the cell to be overlaid is different from the frequency of the cell 10_2 where the important communication is located. Further, both the base station 1A_2 and the base station 1A_1 may change the cell range.
  • Traffic offload control refers to inter-terminal communication between a mobile station belonging to a base station operating a specific area related to important communication and a mobile station located in a cell of the base station or a base station cell linked with the base station. This is control for connecting to a base station that is not a base station that operates a specific area related to important communication. For example, for mobile stations that belong to the base station 1A_2 that operates a specific area related to important communication, a mobile station that is not subject to important communication is connected to the base station via inter-terminal communication with the mobile station located in the cell 10_2 or the cell 10_1. The station 1A_1 is forcibly handed over. Thereby, the number of mobile stations belonging to the base station of the cell where the important communication is located can be reduced.
  • the data processing unit 4 is configured to detect an event related to important communication. Thereby, when an event related to important communication is detected, it is possible to request the base station 1A to perform radio resource enhancement control.
  • the data processing unit 4 is configured to specify a base station that operates a cell including a specific area related to important communication and determine a base station that cooperates with the base station.
  • the base station that operates the cell including the specific area related to the important communication and the base station that cooperates with the base station can perform radio resource enhancement control in cooperation with each other.
  • the base station 1A is configured to perform cell range control or traffic offload control as radio resource enhancement control. Accordingly, it is possible to reduce the number of mobile stations belonging to a base station that operates a cell including a specific area related to important communication, or to add a radio resource that can be used in a cell including a specific area related to important communication.
  • each device base station 1, base station 1A, mobile station 2, and base station 1A described in the first and second embodiments is ASIC (ApplicationASpecific Integrated Circuit) included in each device. ), DSP (Digital-Processor-Unit), MPU (Micro-Processing Unit), CPU (Central-Processing Unit), or a combination thereof.
  • the computer system may be made to execute a program including a group of instructions related to the processing procedure of each device described with reference to the flowcharts or sequence diagrams.
  • Non-transitory computer readable media include various types of tangible storage media.
  • Examples of non-transitory computer-readable media include magnetic recording media (for example, flexible disks, magnetic tapes, hard disk drives), magneto-optical recording media (for example, magneto-optical disks), CD-ROMs (Compact Read Only Memory), CD- R (Compact Disc Recordable), CD-R / W (Compact Disc Rewriteable), semiconductor memory (for example, mask ROM, PROM (Programmable ROM), EPROM (Erasable PROM), flash ROM, RAM (random access memory)) .
  • magnetic recording media for example, flexible disks, magnetic tapes, hard disk drives
  • magneto-optical recording media for example, magneto-optical disks
  • CD-ROMs Compact Read Only Memory
  • CD- R Compact Disc Recordable
  • CD-R / W Compact Disc Rewriteable
  • semiconductor memory for example, mask ROM, PROM (Programmable ROM), EPROM (Erasable PROM),
  • the program may also be supplied to the computer by various types of transitory computer readable media.
  • Examples of transitory computer readable media include electrical signals, optical signals, and electromagnetic waves.
  • the temporary computer-readable medium can supply the program to the computer via a wired communication path such as an electric wire and an optical fiber, or a wireless communication path.
  • the mobile station has performed radio resource control.
  • a base station (for example, base station 1A_2) that operates a cell including a specific area related to important communication may perform radio resource control such as handover instead of transmitting radio resource control information.
  • a part or all of the above-described embodiment can be described as in the following supplementary notes, but is not limited thereto.
  • Appendix 1 A first base station operating a first cell; A second base station that operates the second cell, The first base station cooperates with the second base station to increase control of radio resources that can be allocated to a specific region or a specific mobile station group related to the important communication due to an event related to the important communication.
  • Radio resource enhancement control means Communications system.
  • Appendix 2 The communication system according to appendix 1, further comprising data processing means for detecting the event.
  • the event relates to sudden occurrence, or sudden occurrence prediction, The communication system according to attachment 2.
  • the detection relating to the sudden occurrence is at least one of detection of a disaster, an incident, or an event by a camera or a sensor, and reception of a fire or police dispatch command.
  • the detection related to the unexpected occurrence prediction is at least one of a prediction of a disaster or an incident by data analysis and an prediction of an incident by detection of a suspicious person.
  • the data processing means includes the first base station, the second base station, the first base station or the host device of the second base station, and the first base station or the second base. Provided in at least one of the mobile stations belonging to the station, The communication system according to any one of appendices 2 to 5.
  • the radio resource enhancement control is control of a cell range of at least one of the first cell and the second cell, or traffic offload control.
  • the communication system according to any one of appendices 1 to 6.
  • Control of the cell range includes antenna tilt angle of the first base station, antenna tilt angle of the second base station, antenna azimuth angle of the first base station, antenna azimuth angle of the second base station. Changing at least one of the transmission power of the first base station, the transmission power of the second base station, the handover threshold of the first cell, and the handover threshold of the second cell Control The communication system according to attachment 7.
  • the cell range control is performed so as to reduce the number of mobile stations belonging to a base station operating the specific area, or to add a radio resource that can be used in the specific area.
  • the traffic offload control is performed for a mobile station belonging to a base station that operates the specific area via inter-terminal communication with a mobile station located in a cell of the base station or a cell of a base station that cooperates with the base station. Control to connect to a base station that is not a base station that operates the specific area.
  • the communication system according to any one of appendices 7 to 9.
  • the traffic offload control is a mobile station located in a cell of the base station or a cell of a base station that cooperates with the base station, for a mobile station that is not subject to the important communication belonging to the base station that operates the specific area. Is a control for connecting to a base station that is not a base station that operates the specific area via inter-terminal communication with The communication system according to any one of appendices 7 to 9.
  • the mobile station that has received the radio resource control information performs handover or carrier aggregation based on the radio resource control information.
  • a dynamic radio resource control method in a base station comprising: Due to an event related to important communication, radio resource enhancement control that can be allocated to a specific area or a specific mobile station group related to the important communication is performed in cooperation with another base station. Dynamic radio resource control method.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

[Problem] To provide a communication system, a base station device and a dynamic radio resource control method with which it is possible to ensure high reliability for important communications, rapidly and flexibly. [Solution] A communication system (100) according to the present invention is provided with a first base station (1_1) operating a first cell (10_1), and a second base station (1_2) operating a second cell (10_2). Further, the first base station (1_1) includes a radio resource enhancement control unit (11) which, in cooperation with the second base station (1_2), carries out control to enhance radio resources capable of being allocated to a specific region or a specific mobile station group, in relation to important communications, resulting from events relating to important communications.

Description

通信システム、基地局装置、及び動的無線リソース制御方法Communication system, base station apparatus, and dynamic radio resource control method
　本発明は、通信システム、基地局装置、及び動的無線リソース制御方法に関し、特に、無線リソースを動的に制御するための通信システム、基地局装置、及び動的無線リソース制御方法に関する。 The present invention relates to a communication system, a base station apparatus, and a dynamic radio resource control method, and more particularly, to a communication system, a base station apparatus, and a dynamic radio resource control method for dynamically controlling radio resources.
　近年の大規模災害や大事件を契機に、警察や消防等の公共機関では、映像を活用した業務の高度化が期待されている。しかし、既存の消防無線は数１０ｋｂｐｓの低速通信であるため映像伝送ができない。また、携帯キャリアネットワークは、災害時やイベント時には、輻輳が発生して使用できないリスクが高い。このため、新たな無線ネットワークの導入が検討されている。 In recent years, due to large-scale disasters and major incidents, public institutions such as the police and fire departments are expected to improve their work using video. However, since the existing fire fighting radio is low-speed communication of several tens of kbps, video transmission cannot be performed. In addition, the mobile carrier network has a high risk that it cannot be used due to congestion during a disaster or event. For this reason, introduction of a new wireless network is being studied.
　例えば、非特許文献１には、総務省の電波政策ビジョン懇談会において、公共用周波数である２００ＭＨｚ帯にＬＴＥ（Ｌｏｎｇ Ｔｅｒｍ Ｅｖｏｌｕｔｉｏｎ）方式を導入し、公共向けＬＴＥ（Ｐｕｂｌｉｃ Ｓａｆｅｔｙ ＬＴＥ：ＰＳ－ＬＴＥ）による防災無線ネットワークの構築推進が提言されていることが開示されている。 For example, Non-Patent Document 1 introduced LTE (Long Term Term Evolution) in the 200 MHz band, which is a public frequency, at the radio wave policy vision round-table meeting of the Ministry of Internal Affairs and Communications, and LTE for the public (Public Safety LTE: PS-LTE). It is disclosed that the construction promotion of the disaster prevention wireless network is proposed.
国際公開第２０１１／１３２７４２号International Publication No. 2011-132742 特開２００７－０４３３１０号公報JP 2007-043310 A
　公共向けネットワークは、救助活動や警備等の実施に利用される。このような利用において、通信断は致命的になる場合があるため、公共向けネットワークの通信には高い信頼性が求められる。しかしながら、災害や事件がどこでいつ発生するかはわからないため、事前に臨時の通信インフラを設置することはできない。また、すべての通信インフラを災害時や事件発生時を想定して設計することは、コスト面から現実的ではない。 The public network is used for rescue operations and security. In such a use, since communication interruption may be fatal, high reliability is required for public network communication. However, it is not possible to know where and when disasters or incidents occur, so it is not possible to set up a temporary communication infrastructure in advance. In addition, designing all communication infrastructures in the event of a disaster or incident is not practical from a cost standpoint.
　一方、特許文献１には、基地局において、コアネットワークからのＥＴＷＳ（Ｅａｒｔｈｑｕａｋｅ ａｎｄ Ｔｓｕｎａｍｉ Ｗａｒｎｉｎｇ Ｓｙｓｔｅｍ）情報を移動端末へ送信した場合、自セル内のトラフィック量の合計値が第１の所定値以上となると予測される条件が満たされると判断し、自セル内の移動端末に割り当てられているリソースブロックを減らすことにより、緊急通信用のリソースブロックを確保することが開示されている。 On the other hand, in Patent Document 1, when the base station transmits ETWS (Earthquake and TsunamiｎWarning System) information from the core network to the mobile terminal, the total amount of traffic in the own cell is equal to or greater than a first predetermined value. It is disclosed that an emergency communication resource block is secured by determining that the predicted condition is satisfied and reducing the resource block allocated to the mobile terminal in the own cell.
　しかし、特許文献１に開示の技術では、割り当て済みのリソースブロックを減らしても緊急通信用として必要な量のリソースブロックを確保できない場合があり得るという問題があった。 However, the technique disclosed in Patent Document 1 has a problem that even if the allocated resource blocks are reduced, a necessary amount of resource blocks may not be secured for emergency communication.
　本発明は、このような問題点を解決するためになされたものであり、重要な通信に対して迅速且つ柔軟に高い信頼性を確保することができる通信システム、基地局装置、及び動的無線リソース制御方法を提供することを目的とする。 The present invention has been made to solve such problems, and is capable of ensuring high reliability quickly and flexibly for important communications, a base station apparatus, and dynamic radio. An object is to provide a resource control method.
　本発明の第１の態様にかかる通信システムは、第１のセルを運用する第１の基地局と、第２のセルを運用する第２の基地局と、を備え、前記第１の基地局は、重要通信に関する事象に起因し、前記重要通信に関する特定領域又は特定の移動局群に対して割当可能な無線リソースの増強制御を、前記第２の基地局と連携して行う無線リソース増強制御部を有するものである。 A communication system according to a first aspect of the present invention includes a first base station that operates a first cell, and a second base station that operates a second cell, wherein the first base station Is a radio resource enhancement control that is performed in association with the second base station, in association with the second base station, due to an event related to important communication, and that can be assigned to a specific area or a specific mobile station group related to the important communication. It has a part.
　本発明の第２の態様にかかる基地局装置は、重要通信に関する事象に起因し、前記重要通信に関する特定領域又は特定の移動局群に対して割当可能な無線リソースの増強制御を、他の基地局と連携して行う無線リソース増強制御部を備えるものである。 The base station apparatus according to the second aspect of the present invention controls the enhancement of radio resources that can be allocated to a specific region or a specific mobile station group related to the important communication due to an event related to the important communication to another base. A radio resource augmentation control unit that performs in cooperation with a station is provided.
　本発明の第３の態様にかかる基地局における動的無線リソース制御方法は、重要通信に関する事象に起因し、前記重要通信に関する特定領域又は特定の移動局群に対して割当可能な無線リソースの増強制御を、他の基地局と連携して行うステップを含むものである。 The dynamic radio resource control method in the base station according to the third aspect of the present invention is the increase of radio resources that can be allocated to a specific region or a specific mobile station group related to the important communication due to an event related to the important communication. The control includes a step of performing control in cooperation with another base station.
　本発明によれば、重要な通信に対して迅速且つ柔軟に高い信頼性を確保することができる通信システム、基地局装置、及び動的無線リソース制御方法を提供することができる。 According to the present invention, it is possible to provide a communication system, a base station apparatus, and a dynamic radio resource control method capable of ensuring high reliability quickly and flexibly for important communication.
本発明の実施の形態１にかかる通信システムの概略的な構成例を示す図である。It is a figure which shows the schematic structural example of the communication system concerning Embodiment 1 of this invention. 本発明の実施の形態２にかかる通信システムの概略的な構成例を示す図である。It is a figure which shows the schematic structural example of the communication system concerning Embodiment 2 of this invention. 本発明の実施の形態２にかかるデータ処理部の構成例を示すブロック図である。It is a block diagram which shows the structural example of the data processing part concerning Embodiment 2 of this invention. 本発明の実施の形態２にかかるデータ処理部の処理例を示すフローチャートである。It is a flowchart which shows the process example of the data processing part concerning Embodiment 2 of this invention. 本発明の実施の形態２にかかる基地局の構成例を示すブロック図である。It is a block diagram which shows the structural example of the base station concerning Embodiment 2 of this invention. 本発明の実施の形態２にかかる基地局の処理の一例を示すフローチャートである。It is a flowchart which shows an example of the process of the base station concerning Embodiment 2 of this invention. 本発明の実施の形態２にかかる基地局の処理の他の例を示すフローチャートである。It is a flowchart which shows the other example of the process of the base station concerning Embodiment 2 of this invention. 本発明の実施の形態２にかかる移動局の構成例を示すブロック図である。It is a block diagram which shows the structural example of the mobile station concerning Embodiment 2 of this invention. 本発明の実施の形態２にかかる移動局の処理例を示すフローチャートである。It is a flowchart which shows the process example of the mobile station concerning Embodiment 2 of this invention. 本発明の実施の形態２にかかる通信システムにおける無線リソース増強制御手順の一例を示すシーケンス図である。It is a sequence diagram which shows an example of the radio | wireless resource augmentation control procedure in the communication system concerning Embodiment 2 of this invention. 本発明の実施の形態２にかかる通信システムにおける無線リソース増強制御手順の他の例を示すシーケンス図である。It is a sequence diagram which shows the other example of the radio | wireless resource augmentation control procedure in the communication system concerning Embodiment 2 of this invention. 本発明の実施の形態２にかかる通信システムにおける無線リソース増強制御手順のさらに他の例を示すシーケンス図である。It is a sequence diagram which shows the further another example of the radio | wireless resource reinforcement | strengthening control procedure in the communication system concerning Embodiment 2 of this invention.
　以下では、本発明を適用した具体的な実施の形態について、図面を参照しながら詳細に説明する。各図面において、同一要素には同一の符号が付されており、説明の明確化のため、必要に応じて重複説明は省略される。また、図面中の矢印の向きは、一例を示すものであり、ブロック間の信号の向きを限定するものではない。 Hereinafter, specific embodiments to which the present invention is applied will be described in detail with reference to the drawings. In the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted as necessary for the sake of clarity. Moreover, the direction of the arrow in the drawing shows an example, and does not limit the direction of the signal between the blocks.
　実施の形態１
　図１は、本発明の実施の形態１にかかる通信システム１００の概略的な構成例を示す図である。なお、本実施の形態にかかる通信システム１００は、ＯＦＤＭＡ（Ｏｒｔｈｏｇｏｎａｌ Ｆｒｅｑｕｅｎｃｙ Ｄｉｖｉｓｉｏｎ Ｍｕｌｔｉｐｌｅ Ａｃｃｅｓｓ）、より具体的には、ＬＴＥ方式の無線通信システムを例として説明を行う。 Embodiment 1
FIG. 1 is a diagram illustrating a schematic configuration example of a communication system 100 according to the first embodiment of the present invention. The communication system 100 according to the present embodiment will be described using OFDMA (Orthogonal Frequency Division Multiple Access), more specifically, an LTE wireless communication system as an example.
　通信システム１００は、基地局１＿１と、基地局１＿２と、コアネットワーク３と、を備えている。なお、図１では、通信システム１００が備える基地局として、基地局１＿１及び基地局１＿２の２つの基地局を示しているが、基地局の数は２つに限らない。また、図１では、基地局１＿１と基地局１＿２とは、コアネットワーク３を介して接続された構成を示しているが、基地局１＿１と基地局１＿２とは、有線又は無線により直接通信可能な構成としてもよい。以下の説明では、基地局１＿１と基地局１＿２とは、コアネットワーク３を介して通信することについて説明する。 The communication system 100 includes a base station 1_1, a base station 1_2, and a core network 3. In FIG. 1, two base stations, base station 1_1 and base station 1_2, are shown as base stations included in communication system 100, but the number of base stations is not limited to two. Further, FIG. 1 shows a configuration in which the base station 1_1 and the base station 1_2 are connected via the core network 3, but the base station 1_1 and the base station 1_2 can directly communicate with each other by wire or wirelessly. It is good also as a structure. In the following description, communication between the base station 1_1 and the base station 1_2 via the core network 3 will be described.
　基地局１＿１及び基地局１＿２は、それぞれセル１０＿１及びセル１０＿２を形成し、運用する。また、図１に示す如くセル１０＿１内に位置する移動局２＿１は、基地局１＿１に帰属し、基地局１＿１との間で双方向の無線通信を行う。同様に、セル１０＿２内に位置する移動局２＿２は、基地局１＿２に帰属し、基地局１＿２との間で双方向の無線通信を行う。なお、以降の説明においては、基地局１＿１及び基地局１＿２を符号１で総称し、セル１０＿１及びセル１０＿２を符号１０で総称し、移動局２＿１及び移動局２＿２を符号２で総称することがある。また、各基地局に帰属する移動局の数は複数である形態が一般的である。 The base station 1_1 and the base station 1_2 form and operate a cell 10_1 and a cell 10_2, respectively. Further, as shown in FIG. 1, the mobile station 2_1 located in the cell 10_1 belongs to the base station 1_1 and performs two-way wireless communication with the base station 1_1. Similarly, the mobile station 2_2 located in the cell 10_2 belongs to the base station 1_2 and performs bidirectional wireless communication with the base station 1_2. In the following description, the base station 1_1 and the base station 1_2 may be collectively referred to by reference numeral 1, the cell 10_1 and the cell 10_2 may be collectively referred to by reference numeral 10, and the mobile station 2_1 and mobile station 2_2 may be collectively referred to by reference numeral 2. . In general, the number of mobile stations belonging to each base station is plural.
　基地局１は、移動体通信事業者のコアネットワーク３に接続されている。また、移動局２は、基地局１を介してコアネットワーク３に接続されている。そして、基地局１は、移動局２とコアネットワーク３との間でトラフィックを中継する。 The base station 1 is connected to the core network 3 of the mobile carrier. The mobile station 2 is connected to the core network 3 via the base station 1. The base station 1 relays traffic between the mobile station 2 and the core network 3.
　なお、図１の例では、基地局１＿１と基地局１＿２とは、同一の運用事業者によって管理されるものとして説明するが、基地局１＿１と基地局１＿２とは、異なる運用事業者によって管理されるものとしてもよい。また、基地局１＿１と基地局１＿２とは、一方がＬＴＥ方式の基地局であり他方が業務無線の基地局である等、システムが異なっていてもよい。すなわち、セル１０＿１とセル１０＿２とは、位置的に重なっていることもあり得る。 In the example of FIG. 1, the base station 1_1 and the base station 1_2 are described as being managed by the same operator, but the base station 1_1 and the base station 1_2 are managed by different operators. It is good also as a thing. Further, the base station 1_1 and the base station 1_2 may have different systems, such that one is an LTE base station and the other is a business radio base station. That is, the cell 10_1 and the cell 10_2 may overlap in position.
　基地局１は、無線リソース増強制御部１１を備えている。無線リソース増強制御部１１は、重要通信に関する事象に起因し、当該重要通信に関する特定領域又は特定の移動局群に対して割当可能な無線リソースの増強制御を、他の基地局と連携して行う機能を有している。 The base station 1 includes a radio resource enhancement control unit 11. The radio resource enhancement control unit 11 performs enhancement control of radio resources that can be allocated to a specific region or a specific mobile station group related to the important communication in association with other base stations due to an event related to the important communication. It has a function.
　例えば、図１のセル１０＿１内にて、重要通信が発生する場合に、基地局１＿１の無線リソース増強制御部１１は、セル１０＿１内にて発生する重要通信に関する事象に起因し、セル１０＿１内の重要通信に関する特定領域又は特定の移動局群に対して割当可能な無線リソースの増強制御を、基地局１＿２と連携して行う。例えば、基地局１＿１の無線リソース増強制御部１１は、セル１０＿１内に位置する移動局を基地局１＿２に帰属させて、基地局１＿１に帰属する移動局数を減らす制御を行う。これにより、セル１０＿１内の重要通信に関する特定領域又は特定の移動局群に対して割当可能な無線リソースを増強させる。 For example, when important communication occurs in the cell 10_1 in FIG. 1, the radio resource enhancement control unit 11 of the base station 1_1 causes an event related to important communication that occurs in the cell 10_1, Radio resource enhancement control that can be assigned to a specific region or a specific mobile station group related to important communication is performed in cooperation with the base station 1_2. For example, the radio resource enhancement control unit 11 of the base station 1_1 causes the mobile station located in the cell 10_1 to belong to the base station 1_2 and performs control to reduce the number of mobile stations belonging to the base station 1_1. This increases the radio resources that can be allocated to a specific area or a specific mobile station group related to important communication in the cell 10_1.
　また、図１のセル１０＿２内にて、重要通信が発生する場合に、基地局１＿１の無線リソース増強制御部１１は、セル１０＿２内にて発生する重要通信に関する事象に起因し、セル１０＿２内の重要通信に関する特定領域又は特定の移動局群に対して割当可能な無線リソースの増強制御を、基地局１＿２と連携して行う。例えば、基地局１＿１の無線リソース増強制御部１１は、セル１０＿２内に位置する移動局を基地局１＿１に帰属させて、基地局１＿２に帰属する移動局数を減らす制御を行う。これにより、セル１０＿２内の重要通信に関する特定領域又は特定の移動局群に対して割当可能な無線リソースを増強させる。 Further, when important communication occurs in the cell 10_2 in FIG. 1, the radio resource enhancement control unit 11 of the base station 1_1 causes an event related to important communication that occurs in the cell 10_2, Radio resource enhancement control that can be assigned to a specific region or a specific mobile station group related to important communication is performed in cooperation with the base station 1_2. For example, the radio resource enhancement control unit 11 of the base station 1_1 causes the mobile station located in the cell 10_2 to belong to the base station 1_1 and performs control to reduce the number of mobile stations belonging to the base station 1_2. This increases the radio resources that can be allocated to a specific area or a specific mobile station group related to important communication in the cell 10_2.
　以上のように、本発明の実施の形態１にかかる通信システム１００では、基地局１が無線リソース増強制御部１１を備える構成としている。これにより、１つの基地局の無線リソースのみでは重要通信用として必要な量の無線リソースが確保できない場合であっても、他の基地局と連携することにより重要通信用として必要な量の無線リソースを確保することができる。すなわち、重要な通信に対して迅速且つ柔軟に高い信頼性を確保することができる。 As described above, in the communication system 100 according to the first embodiment of the present invention, the base station 1 is configured to include the radio resource enhancement control unit 11. As a result, even if the amount of radio resources required for important communication cannot be secured with only the radio resources of one base station, the amount of radio resources required for important communication can be obtained by cooperating with other base stations. Can be secured. That is, high reliability can be secured quickly and flexibly for important communications.
　実施の形態２
　続いて、本発明の実施の形態２にかかる通信システム１００Ａについて説明する。本実施の形態２にかかる通信システム１００Ａは、実施の形態１にかかる通信システム１００の具体例である。図２は、本実施の形態２にかかる通信システム１００Ａの概略的な構成例を示す図である。通信システム１００Ａは、通信システム１００の構成に対して、基地局１に代えて基地局１Ａを備えている。また、通信システム１００Ａは、コアネットワーク３に代えてコアネットワーク３Ａを備えている。コアネットワーク３Ａは、データ処理部４を備えている。以下、セル１０＿２内で重要通信に関する事象が発生する例について説明する。 Embodiment 2
Next, the communication system 100A according to the second embodiment of the present invention will be described. A communication system 100A according to the second embodiment is a specific example of the communication system 100 according to the first embodiment. FIG. 2 is a diagram illustrating a schematic configuration example of a communication system 100A according to the second embodiment. The communication system 100 </ b> A includes a base station 1 </ b> A instead of the base station 1 with respect to the configuration of the communication system 100. The communication system 100A includes a core network 3A instead of the core network 3. The core network 3 </ b> A includes a data processing unit 4. Hereinafter, an example in which an event related to important communication occurs in the cell 10_2 will be described.
　データ処理部４は、重要通信に関する事象についての情報の収集および分析を行う論理的な機能部である。図２の例では、データ処理部４は、コアネットワーク３Ａにおける基地局１Ａの上位装置に備えられている。なお、データ処理部４は、基地局１Ａ＿１、基地局１Ａ＿２、移動局２、及びコアネットワーク３Ａの外にある基地局１Ａの上位装置等に備えられるようにしてもよい。なお、コアネットワーク３Ａの外にある基地局１Ａの上位装置とは、例えば、仮想移動体通信事業者（ＭＶＮＯ：Ｍｏｂｉｌｅ Ｖｉｒｔｕａｌ Ｎｅｔｗｏｒｋ Ｏｐｅｒａｔｏｒ）のサーバー等である。以下、データ処理部４がコアネットワーク３Ａにおける基地局１Ａの上位装置に備えられている例について説明するが、基地局１Ａ等に備えられている場合についても適宜説明する。 The data processing unit 4 is a logical functional unit that collects and analyzes information about events related to important communications. In the example of FIG. 2, the data processing unit 4 is provided in a host device of the base station 1A in the core network 3A. Note that the data processing unit 4 may be provided in the base station 1A_1, the base station 1A_2, the mobile station 2, the host device of the base station 1A outside the core network 3A, and the like. The host device of the base station 1A outside the core network 3A is, for example, a server of a virtual mobile communication carrier (MVNO: Mobile Virtual Network Operator). Hereinafter, an example in which the data processing unit 4 is provided in a higher-level device of the base station 1A in the core network 3A will be described.
　続いて、図３及び４を用いて、本実施の形態２にかかるデータ処理部４について説明する。 Subsequently, the data processing unit 4 according to the second embodiment will be described with reference to FIGS.
　図３は、本実施の形態２にかかるデータ処理部４の構成例を示すブロック図である。データ処理部４は、通信部４１と、受信データ処理部４２と、重要通信事象検出部４３と、送信データ処理部４４と、を備えている。 FIG. 3 is a block diagram illustrating a configuration example of the data processing unit 4 according to the second embodiment. The data processing unit 4 includes a communication unit 41, a reception data processing unit 42, an important communication event detection unit 43, and a transmission data processing unit 44.
　通信部４１は、コアネットワーク３Ａを経由して基地局１Ａとの間で信号の送受信を行う。また、通信部４１は、インターネット等を介して基地局１Ａ以外の装置と通信可能な構成としてもよい。通信部４１は、受信された信号を受信データ処理部４２へ出力する。
また、通信部４１は、送信データ処理部４４から無線リソース増強要求及び無線リソース増強通知、又は連携要求を受け取る。そして、通信部４１は、無線リソース増強要求及び無線リソース増強通知、又は連携要求を、該当基地局に対して送信する。 The communication unit 41 transmits and receives signals to and from the base station 1A via the core network 3A. Moreover, the communication part 41 is good also as a structure which can communicate with apparatuses other than the base station 1A via the internet. The communication unit 41 outputs the received signal to the reception data processing unit 42.
Further, the communication unit 41 receives a radio resource enhancement request and a radio resource enhancement notification or a cooperation request from the transmission data processing unit 44. And the communication part 41 transmits a radio | wireless resource augmentation request | requirement and a radio | wireless resource augmentation notification, or a cooperation request | requirement with respect to a corresponding base station.
　受信データ処理部４２は、受け取った信号を復元する。また、受信データ処理部４２は、復元された信号が、重要通信に関する情報であるか否かを判定する。ここで、重要通信に関する情報とは、重要通信に関する事象を検出するために必要な情報のことである。当該情報は、例えば、カメラ、センサ等による検出データ、消防、警察等の出動指令等である。重要通信に関する情報と判定した場合、受信データ処理部４２は、当該重要通信に関する情報を重要通信事象検出部４３へ出力する。 The received data processing unit 42 restores the received signal. The reception data processing unit 42 determines whether the restored signal is information related to important communication. Here, the information related to important communication is information necessary to detect an event related to important communication. The information is, for example, detection data by a camera, a sensor, etc., dispatch commands from the fire department, the police, and the like. If it is determined that the information is related to important communication, the reception data processing unit 42 outputs information related to the important communication to the important communication event detecting unit 43.
　重要通信事象検出部４３は、受け取った重要通信に関する情報に基づいて、重要通信に関する事象を検出する。なお、重要通信に関する事象とは、例えば、突発的に発生する重要通信に関する事象、又は突発的な発生予測に関する重要通信に関する事象である。 The important communication event detection unit 43 detects an event related to important communication based on the received information related to important communication. The event related to important communication is, for example, an event related to important communication that occurs unexpectedly or an event related to important communication related to unexpected occurrence prediction.
　重要通信事象検出部４３は、受け取った重要通信に関する情報が、カメラ又はセンサによる直接的な災害、事件又はイベントの検出データ、又は消防又は警察の出動指令である場合には、突発的に発生する重要通信に関する事象として検出する。 The important communication event detection unit 43 suddenly occurs when the received information related to important communication is a direct disaster data, incident or event detection data by the camera or sensor, or a fire or police dispatch command. Detect as an event related to important communication.
　また、重要通信事象検出部４３は、受け取った重要通信に関する情報が、カメラ又はセンサによる不審者の検出データである場合には、突発的な発生予測に関する重要通信に関する事象として検出する。さらに、インターネット上のＳＮＳ（Ｓｏｃｉａｌ　Ｎｅｔｗｏｒｋｉｎｇ　Ｓｅｒｖｉｃｅ）から得られたデータである場合には、ビッグデータ解析を行い、災害又は事件が予測される場合には、突発的な発生予測に関する重要通信に関する事象として検出する。 Further, the important communication event detection unit 43 detects an event related to important communication related to sudden occurrence prediction when the received information related to important communication is detection data of a suspicious person by a camera or a sensor. Furthermore, in the case of data obtained from SNS (Social Networking Service) on the Internet, big data analysis is performed, and when a disaster or incident is predicted, it is an event related to important communication regarding sudden occurrence prediction To detect.
　また、重要通信事象検出部４３は、重要通信に関する事象を検出した場合、当該重要通信に関する特定領域を決定する。ここで、特定領域とは地理的な領域のことを示す。また、重要通信事象検出部４３は、重要通信に関する特定領域が含まれるセルを運用する基地局を特定する。本例では、重要通信に関する特定領域が含まれるセルを運用する基地局として、基地局１Ａ＿２を特定する。さらに、重要通信事象検出部４３は、基地局１Ａ＿２と連携する基地局を、基地局１Ａ＿１に決定する。 Further, when detecting an event related to important communication, the important communication event detecting unit 43 determines a specific area related to the important communication. Here, the specific area indicates a geographical area. Further, the important communication event detection unit 43 specifies a base station that operates a cell including a specific area related to important communication. In this example, the base station 1A_2 is specified as a base station that operates a cell including a specific area related to important communication. Furthermore, the important communication event detection unit 43 determines the base station 1A_1 as the base station that cooperates with the base station 1A_2.
　また、重要通信事象検出部４３は、特定領域に対応する特定の移動局群を決定するようにしてもよい。なお、特定の移動局群とは、警察や消防等の公共機関の移動局群、又はイベント関係者の移動局群等でもよいし、それ以外でもよい。 Further, the important communication event detection unit 43 may determine a specific mobile station group corresponding to the specific area. The specific mobile station group may be a mobile station group of public organizations such as the police and fire department, a mobile station group of event-related persons, or the like.
　また、重要通信事象検出部４３は、基地局１Ａ＿２に送信するための無線リソース増強要求を生成する。ここで、無線リソース増強要求とは、基地局１Ａ＿２に対してセル１０＿２の無線リソースの増強を要求するメッセージである。無線リソース増強要求は、連携する基地局の情報、すなわち基地局１Ａ＿１を識別する情報を含む。また、無線リソース増強要求は、重要通信に関する特定領域及び特定の移動局群を示す情報の少なくとも一方を含む。 Also, the important communication event detection unit 43 generates a radio resource enhancement request for transmission to the base station 1A_2. Here, the radio resource enhancement request is a message requesting the base station 1A_2 to augment the radio resource of the cell 10_2. The radio resource enhancement request includes information on the base stations to be linked, that is, information for identifying the base station 1A_1. The radio resource enhancement request includes at least one of information indicating a specific area and a specific mobile station group related to important communication.
　また、重要通信事象検出部４３は、基地局１Ａ＿１に送信するための無線リソース増強通知を生成する。ここで、無線リソース増強通知とは、基地局１Ａ＿２が無線リソースを増強することを基地局１Ａ＿１に通知するメッセージである。 Also, the important communication event detection unit 43 generates a radio resource enhancement notification for transmission to the base station 1A_1. Here, the radio resource increase notification is a message notifying the base station 1A_1 that the base station 1A_2 increases the radio resource.
　また、重要通信事象検出部４３は、無線リソース増強要求及び無線リソース増強通知を生成することに代えて、基地局１Ａ＿１及び基地局１Ａ＿２に送信するための連携要求を生成してもよい。ここで、連携要求とは、基地局１Ａ＿１と基地局１Ａ＿２との連携を要求するメッセージである。連携要求は、重要通信に関する特定領域及び特定の移動局群を示す情報の少なくとも一方を含む。また、連携要求は、連携する基地局の情報、すなわち基地局１Ａ＿１及び基地局１Ａ＿２を識別する情報を含んでもよい。以下、連携要求が、連携する基地局の情報を含む例について説明する。なお、連携要求が、連携する基地局の情報を含まない例については、後に図１２を用いて説明する。 Further, the important communication event detection unit 43 may generate a cooperation request for transmitting to the base station 1A_1 and the base station 1A_2 instead of generating the radio resource enhancement request and the radio resource enhancement notification. Here, the cooperation request is a message for requesting cooperation between the base station 1A_1 and the base station 1A_2. The cooperation request includes at least one of information indicating a specific area related to important communication and a specific mobile station group. Further, the cooperation request may include information on the base stations to be cooperated, that is, information for identifying the base stations 1A_1 and 1A_2. Hereinafter, an example in which the cooperation request includes information on a base station to cooperate with will be described. An example in which the cooperation request does not include information on the base station to cooperate with will be described later with reference to FIG.
　重要通信事象検出部４３は、生成された無線リソース増強要求及び無線リソース増強通知、又は連携要求を送信データ処理部４４へ出力する。 The important communication event detection unit 43 outputs the generated radio resource enhancement request and radio resource enhancement notification or cooperation request to the transmission data processing unit 44.
　送信データ処理部４４は、受け取った無線リソース増強要求及び無線リソース増強通知、又は連携要求を通信部４１へ出力する。 The transmission data processing unit 44 outputs the received radio resource enhancement request and radio resource enhancement notification or cooperation request to the communication unit 41.
　図４は、本実施の形態２にかかるデータ処理部４の処理例を示すフローチャートである。データ処理部４は、所定のタイミングにおいて、重要通信に関する事象を検出したか否かを判定する（ステップＳ１０１）。 FIG. 4 is a flowchart showing a processing example of the data processing unit 4 according to the second embodiment. The data processing unit 4 determines whether an event related to important communication is detected at a predetermined timing (step S101).
　Ｓ１０１にて重要通信に関する事象を検出したと判定された場合（ステップＳ１０１でＹｅｓ）、無線リソース増強要求及び無線リソース増強通知、又は連携要求を、該当基地局に対して送信する（ステップＳ１０２）。 If it is determined in S101 that an event related to important communication has been detected (Yes in step S101), a radio resource enhancement request and a radio resource enhancement notification or a cooperation request are transmitted to the corresponding base station (step S102).
　Ｓ１０１にて重要通信に関する事象を検出していないと判定された場合（ステップＳ１０１でＮｏ）、再度事象の検出を判定するステップＳ１０１に戻る。 If it is determined in S101 that an event related to important communication has not been detected (No in step S101), the process returns to step S101 for determining event detection again.
　続いて、図５～図７を用いて、本実施の形態２にかかる基地局１Ａについて説明する。 Subsequently, the base station 1A according to the second embodiment will be described with reference to FIGS.
　図５は、本実施の形態２にかかる基地局１Ａの構成例を示すブロック図である。基地局１Ａは、無線リソース増強制御部１１Ａと、無線通信部１２と、受信データ処理部１３と、通信部１４と、送信データ処理部１５と、を備えている。なお、基地局１Ａは、無線通信部１２、受信データ処理部１３、及び通信部１４によりアップリンク信号に関する処理を行うが、当該アップリンク信号に関する処理は、基本的に通常の処理と同じであるため説明を省略する。 FIG. 5 is a block diagram of a configuration example of the base station 1A according to the second embodiment. The base station 1A includes a radio resource enhancement control unit 11A, a radio communication unit 12, a reception data processing unit 13, a communication unit 14, and a transmission data processing unit 15. The base station 1A performs processing related to the uplink signal by the wireless communication unit 12, the reception data processing unit 13, and the communication unit 14, but the processing related to the uplink signal is basically the same as normal processing. Therefore, explanation is omitted.
　通信部１４は、コアネットワーク３Ａから受信されたデータを送信データ処理部１５へ出力する。 The communication unit 14 outputs the data received from the core network 3A to the transmission data processing unit 15.
　送信データ処理部１５は、通信部１４から受け取ったデータが移動局向けデータであるか無線リソース増強に関する情報であるかを判定する。移動局向けデータであると判定した場合、送信データ処理部１５は、受け取った移動局向けデータを移動局ごと且つベアラごとに設定されたバッファに保存し、誤り訂正符号化、レートマッチング、インタリービング等を行なってトランスポートチャネルを生成する。また、送信データ処理部１５は、トランスポートチャネルのデータ系列に制御情報を付加して無線フレームを生成する。そして、生成された無線フレームを無線通信部１２へ出力する。 The transmission data processing unit 15 determines whether the data received from the communication unit 14 is data for a mobile station or information on radio resource enhancement. If it is determined that the data is for mobile stations, the transmission data processing unit 15 stores the received mobile station data in a buffer set for each mobile station and for each bearer, and performs error correction coding, rate matching, and interleaving. Etc. to generate a transport channel. Further, the transmission data processing unit 15 generates a radio frame by adding control information to the data sequence of the transport channel. Then, the generated wireless frame is output to the wireless communication unit 12.
　また、通信部１４から受け取ったデータが無線リソース増強に関する情報であると判定した場合、送信データ処理部１５は、当該情報を無線リソース増強制御部１１Ａへ出力する。なお、無線リソース増強に関する情報とは、無線リソース増強要求、無線リソース増強通知、連携情報、又は連携要求である。 If it is determined that the data received from the communication unit 14 is information related to radio resource enhancement, the transmission data processing unit 15 outputs the information to the radio resource enhancement control unit 11A. Note that the information related to radio resource enhancement is a radio resource enhancement request, a radio resource enhancement notification, linkage information, or a linkage request.
　また、送信データ処理部１５は、無線リソース増強制御部１１Ａから無線リソース制御情報を受け取った場合、上述した処理と同様の処理を行って無線リソース制御情報を含む無線フレームを生成する。そして、生成された無線フレームを無線通信部１２へ出力する。なお、無線リソース制御情報とは、無線リソースの追加を通知するための無線リソース追加情報、又は移動局に対して帰属先の基地局を変更させるための帰属先基地局情報等である。 Further, when the transmission data processing unit 15 receives the radio resource control information from the radio resource enhancement control unit 11A, the transmission data processing unit 15 performs a process similar to the above-described process to generate a radio frame including the radio resource control information. Then, the generated wireless frame is output to the wireless communication unit 12. Note that the radio resource control information is radio resource addition information for notifying addition of radio resources, or belonging base station information for causing the mobile station to change the belonging base station.
　無線リソース増強制御部１１Ａは、無線リソース増強に関する情報を送信データ処理部１５から受け取る。 The radio resource enhancement control unit 11A receives information related to radio resource enhancement from the transmission data processing unit 15.
　無線リソース増強制御部１１Ａは、無線リソース増強に関する情報として、無線リソース増強要求を受け取った場合、無線リソース増強要求に含まれる情報に基づいて、連携情報を生成する。ここで、連携情報とは、他の基地局に対して運用を依頼する地理的領域を示す依頼領域情報、又は他の基地局に対して帰属を依頼する移動局を示す依頼移動局情報を含む情報である。また、無線リソース増強制御部１１Ａは、無線リソース増強要求に含まれる連携する基地局の情報に基づいて、連携情報の宛先となる基地局を認識する。そして、無線リソース増強制御部１１Ａは、生成された連携情報及びその宛先を示す情報を受信データ処理部１３へ出力する。その後、無線リソース増強制御部１１Ａは、無線リソース制御情報を生成し、送信データ処理部１５へ出力する。 When the radio resource enhancement control unit 11A receives a radio resource enhancement request as information on radio resource enhancement, the radio resource enhancement control unit 11A generates cooperation information based on information included in the radio resource enhancement request. Here, the cooperation information includes requested area information indicating a geographical area for which operation is requested from another base station, or requested mobile station information indicating a mobile station that requests attribution from another base station. Information. Further, the radio resource enhancement control unit 11A recognizes the base station that is the destination of the cooperation information based on the information on the cooperating base stations included in the radio resource enhancement request. Then, the radio resource enhancement control unit 11A outputs the generated cooperation information and information indicating the destination to the reception data processing unit 13. Thereafter, the radio resource enhancement control unit 11A generates radio resource control information and outputs it to the transmission data processing unit 15.
　また、無線リソース増強制御部１１Ａは、無線リソース増強に関する情報として、無線リソース増強通知を受け取った場合、連携情報を受け取っているか否かを判定する。連携情報を受け取っていない場合、無線リソース増強制御部１１Ａは、連携情報の受け取りを待つ。そして、無線リソース増強に関する情報として、連携情報を受け取った場合、無線リソース増強制御部１１Ａは、連携情報に含まれる情報に基づいて、無線リソース増強制御を行う。具体的には、連携情報に含まれる情報が依頼領域情報である場合、無線リソース増強制御部１１Ａは、依頼領域情報に基づいて、依頼された地理的領域を自局にて運用する制御、すなわち自局の無線リソースを依頼領域の無線リソースとして追加する制御を行う。また、連携情報に含まれる情報が依頼移動局情報である場合、無線リソース増強制御部１１Ａは、依頼移動局情報に基づいて、依頼移動局を自局に帰属させる制御を行う。 In addition, when the wireless resource enhancement control unit 11A receives the wireless resource enhancement notification as the information related to the wireless resource enhancement, the wireless resource enhancement control unit 11A determines whether the cooperation information is received. When the cooperation information has not been received, the radio resource enhancement control unit 11A waits for reception of the cooperation information. And when cooperation information is received as information regarding radio resource enhancement, the radio resource enhancement control unit 11A performs radio resource enhancement control based on information included in the cooperation information. Specifically, when the information included in the cooperation information is requested area information, the radio resource enhancement control unit 11A performs control for operating the requested geographical area in its own station based on the requested area information, that is, Control is performed to add the radio resource of the own station as the radio resource of the requested area. Further, when the information included in the cooperation information is requested mobile station information, the radio resource enhancement control unit 11A performs control for causing the requested mobile station to belong to the own station based on the requested mobile station information.
　また、無線リソース増強制御部１１Ａは、無線リソース増強に関する情報として、連携要求を受け取った場合、連携要求に含まれる情報に基づいて、重要通信に関する特定領域又は特定の移動局群が自セル内に位置するか否かを判定する。 Further, when the radio resource enhancement control unit 11A receives a cooperation request as information relating to radio resource enhancement, a specific area or a specific mobile station group related to important communication is included in the own cell based on the information included in the cooperation request. It is determined whether or not it is located.
　特定領域又は特定の移動局群が自セル内に位置する場合、無線リソース増強制御部１１Ａは、連携要求に含まれる情報に基づいて、連携情報を生成する。なお、連携情報は、上述した連携情報と同じ情報である。また、無線リソース増強制御部１１Ａは、連携要求に含まれる連携する基地局の情報に基づいて、連携情報の宛先となる基地局を決定する。そして、無線リソース増強制御部１１Ａは、生成された連携情報及びその宛先を示す情報を受信データ処理部１３へ出力する。その後、無線リソース増強制御部１１Ａは、無線リソース制御情報を生成し、送信データ処理部１５へ出力する。 When the specific area or the specific mobile station group is located in the own cell, the radio resource enhancement control unit 11A generates cooperation information based on the information included in the cooperation request. The linkage information is the same information as the linkage information described above. Moreover, 11 A of radio | wireless resource augmentation control parts determine the base station used as the destination of cooperation information based on the information of the cooperation base station contained in a cooperation request | requirement. Then, the radio resource enhancement control unit 11A outputs the generated cooperation information and information indicating the destination to the reception data processing unit 13. Thereafter, the radio resource enhancement control unit 11A generates radio resource control information and outputs it to the transmission data processing unit 15.
　また、特定領域又は特定の移動局群が自セル内に位置しない場合、無線リソース増強制御部１１Ａは、無線リソース増強に関する情報として、連携情報を受け取っているか否かを判定する。連携情報を受け取っていない場合、無線リソース増強制御部１１Ａは、連携情報の受け取りを待つ。そして、無線リソース増強に関する情報として、連携情報を受け取った場合、無線リソース増強制御部１１Ａは、連携情報に含まれる情報に基づいて、無線リソース増強制御を行う。 In addition, when the specific area or the specific mobile station group is not located in the own cell, the radio resource enhancement control unit 11A determines whether or not the cooperation information is received as information regarding the radio resource enhancement. When the cooperation information has not been received, the radio resource enhancement control unit 11A waits for reception of the cooperation information. And when cooperation information is received as information regarding radio resource enhancement, the radio resource enhancement control unit 11A performs radio resource enhancement control based on information included in the cooperation information.
　受信データ処理部１３は、無線リソース増強制御部１１Ａから連携情報及びその宛先を示す情報を受け取った場合、当該連携情報を、通信部１４を介して宛先の基地局へ送信する。 When the reception data processing unit 13 receives the cooperation information and the information indicating the destination from the radio resource enhancement control unit 11A, the reception data processing unit 13 transmits the cooperation information to the destination base station via the communication unit 14.
　無線通信部１２は、送信データ処理部１５から無線フレームを受け取る。また、無線通信部１２は、受け取った無線フレームについて、送信シンボル列の直交変調、周波数変換、信号増幅等の各処理を行ってダウンリンク信号を生成する。そして、無線通信部１２は、生成されたダウンリンク信号を、アンテナを介して移動局２へ送信する。 The wireless communication unit 12 receives a wireless frame from the transmission data processing unit 15. In addition, the wireless communication unit 12 performs a process such as orthogonal modulation of the transmission symbol sequence, frequency conversion, and signal amplification on the received wireless frame to generate a downlink signal. Then, the wireless communication unit 12 transmits the generated downlink signal to the mobile station 2 via the antenna.
　ここで、データ処理部４が基地局１Ａに備えられている場合の基地局１Ａの各ブロックの機能について簡単に説明する。 Here, the function of each block of the base station 1A when the data processing unit 4 is provided in the base station 1A will be briefly described.
　この場合、受信データ処理部１３及び送信データ処理部１５は、データ処理部４の受信データ処理部４２と同様の機能を保持する。また、受信データ処理部１３及び送信データ処理部１５は、データ処理部４の送信データ処理部４４と同様の機能を保持する。 In this case, the reception data processing unit 13 and the transmission data processing unit 15 have the same functions as the reception data processing unit 42 of the data processing unit 4. Further, the reception data processing unit 13 and the transmission data processing unit 15 have the same functions as the transmission data processing unit 44 of the data processing unit 4.
　さらに、無線リソース増強制御部１１Ａは、データ処理部４の重要通信事象検出部４３と同様の機能を保持する。なお、無線リソース増強制御部１１Ａは、重要通信に関する事象が発生した基地局が自局であると特定した場合には、無線リソース増強要求は生成しない。また、無線リソース増強制御部１１Ａは、重要通信に関する事象が発生した基地局と連携する基地局が自局であると決定した場合には、無線リソース増強通知は生成しない。 Furthermore, the radio resource enhancement control unit 11A has the same function as the important communication event detection unit 43 of the data processing unit 4. Note that the radio resource enhancement control unit 11A does not generate a radio resource enhancement request when it is determined that the base station in which an event related to important communication has occurred is its own station. Also, the radio resource enhancement control unit 11A does not generate a radio resource enhancement notification when it is determined that the base station that cooperates with the base station in which the event related to the important communication has occurred is its own station.
　続いて、図６及び図７のフローチャートを用いて、本実施の形態２にかかる基地局１Ａの処理例について説明する。なお、図６及び図７の例では、重要通信に関する特定領域が含まれるセルを運用する基地局からの連携情報に基づいて、当該基地局と連携する基地局が無線リソース増強制御を行うことについて説明する。なお、重要通信に関する特定領域が含まれるセルを運用する基地局、又は重要通信に関する特定領域が含まれるセルを運用する基地局及び当該基地局と連携する基地局の両方が、無線リソース増強制御を行うようにしてもよい。 Subsequently, a processing example of the base station 1A according to the second embodiment will be described using the flowcharts of FIGS. 6 and 7. In the examples of FIGS. 6 and 7, the base station that cooperates with the base station performs radio resource enhancement control based on the cooperation information from the base station that operates the cell including the specific area related to the important communication. explain. Note that both a base station that operates a cell including a specific area related to important communication, or a base station that operates a cell including a specific area related to important communication and a base station that cooperates with the base station perform radio resource enhancement control. You may make it perform.
　まず、図６を用いて、無線リソース増強要求及び無線リソース増強通知を用いる場合の例について説明する。基地局１Ａは、所定のタイミングにおいて、無線リソース増強要求を受信したか否かを判定する（ステップＳ２０１）。 First, an example of using a radio resource enhancement request and a radio resource enhancement notification will be described with reference to FIG. The base station 1A determines whether or not a radio resource enhancement request has been received at a predetermined timing (step S201).
　無線リソース増強要求を受信している場合（ステップＳ２０１でＹｅｓ）、連携情報を生成し、連携する基地局へ送信する（ステップＳ２０２）。ステップＳ２０２の後、無線リソース制御情報を生成し、対象の移動局へ送信する（ステップＳ２０３）。 If a wireless resource enhancement request has been received (Yes in step S201), link information is generated and transmitted to the linked base station (step S202). After step S202, radio resource control information is generated and transmitted to the target mobile station (step S203).
　無線リソース増強要求を受信していない場合（ステップＳ２０１でＮｏ）、無線リソース増強通知を受信しているか否かを判定する（ステップＳ２０４）。無線リソース増強通知を受信していない場合（ステップＳ２０４でＮｏ）、再度無線リソース増強制御要求の受信を判定するステップＳ２０１に戻る。 If no radio resource enhancement request has been received (No in step S201), it is determined whether a radio resource enhancement notification has been received (step S204). If the wireless resource enhancement notification has not been received (No in step S204), the process returns to step S201 for determining reception of the wireless resource enhancement control request again.
　他方、無線リソース増強通知を受信している場合（ステップＳ２０４でＹｅｓ）、連携情報を受信しているか否かを判定する（ステップＳ２０５）。連携情報を受信していない場合（ステップＳ２０５でＮｏ）、再度連携情報の受信を判定するステップＳ２０５に戻る。 On the other hand, when the wireless resource augmentation notification is received (Yes in step S204), it is determined whether or not cooperation information is received (step S205). If the cooperation information has not been received (No in step S205), the process returns to step S205 for determining the reception of the cooperation information again.
　他方、連携情報を受信している場合（ステップＳ２０５でＹｅｓ）、連携情報に含まれる情報に基づいて、無線リソース増強制御を行う（ステップＳ２０６）。 On the other hand, when cooperation information is received (Yes in step S205), radio resource enhancement control is performed based on information included in the cooperation information (step S206).
　次に、図７を用いて、連携要求を用いる場合の例について説明する。基地局１Ａは、所定のタイミングにおいて、連携要求を受信したか否かを判定する（ステップＳ３０１）。 Next, an example of using a cooperation request will be described with reference to FIG. The base station 1A determines whether or not a cooperation request has been received at a predetermined timing (step S301).
　連携要求を受信していない場合（ステップＳ３０１でＮｏ）、再度連携要求の受信を判定するステップＳ３０１に戻る。 If the cooperation request has not been received (No in step S301), the process returns to step S301 for determining the reception of the cooperation request again.
　他方、連携要求を受信している場合（ステップＳ３０１でＹｅｓ）、重要通信が自セル内に位置するか否かを判定する（ステップＳ３０２）。すなわち、重要通信に関する特定領域又は特定の移動局群が自セル内に位置するか否かを判定する。 On the other hand, when the cooperation request is received (Yes in step S301), it is determined whether the important communication is located in the own cell (step S302). That is, it is determined whether a specific area or a specific mobile station group related to important communication is located in the own cell.
　重要通信が自セル内に位置する場合（ステップＳ３０２でＹｅｓ）、連携情報を生成し、連携する基地局へ送信する（ステップＳ３０３）。ステップＳ３０３の後、無線リソース制御情報を生成し、対象の移動局へ送信する（ステップＳ３０４）。 When the important communication is located in the own cell (Yes in step S302), the link information is generated and transmitted to the link base station (step S303). After step S303, radio resource control information is generated and transmitted to the target mobile station (step S304).
　他方、重要通信が自セル内に位置しない場合（ステップＳ３０２でＮｏ）、連携情報を受信しているか否かを判定する（ステップＳ３０５）。連携情報を受信していない場合（ステップＳ３０５でＮｏ）、再度連携情報の受信を判定するステップＳ３０５に戻る。 On the other hand, when the important communication is not located in the own cell (No in Step S302), it is determined whether or not the cooperation information is received (Step S305). If the cooperation information has not been received (No in step S305), the process returns to step S305 in which the reception of the cooperation information is determined again.
　他方、連携情報を受信している場合（ステップＳ３０５でＹｅｓ）、連携情報に含まれる情報に基づいて、無線リソース増強制御を行う（ステップＳ３０６）。 On the other hand, when cooperation information is received (Yes in Step S305), radio resource enhancement control is performed based on information included in the cooperation information (Step S306).
　続いて、図８及び図９を用いて、本実施の形態２にかかる移動局２について説明する。 Subsequently, the mobile station 2 according to the second embodiment will be described with reference to FIGS. 8 and 9.
　図８は、本実施の形態２にかかる移動局２の構成例を示すブロック図である。移動局２は、無線通信部２１と、受信データ処理部２２と、無線リソース制御部２３と、送信データ処理部２４と、を備えている。 FIG. 8 is a block diagram of a configuration example of the mobile station 2 according to the second embodiment. The mobile station 2 includes a radio communication unit 21, a reception data processing unit 22, a radio resource control unit 23, and a transmission data processing unit 24.
　無線通信部２１は、アンテナを介してダウンリンクの無線フレームを受信する。無線通信部２１は、受信された無線フレームを受信データ処理部２２へ出力する。 The radio communication unit 21 receives a downlink radio frame via an antenna. The wireless communication unit 21 outputs the received wireless frame to the reception data processing unit 22.
　受信データ処理部２２は、受け取った無線フレームから受信データを復元する。また、受信データ処理部２２は、復元された受信データが、無線リソース制御情報か否かを判定する。無線リソース制御情報でない場合の処理は、基本的に通常の処理と同じであるため説明を省略する。復元された受信データが無線リソース制御情報である場合、受信データ処理部２２は、無線リソース制御情報を無線リソース制御部２３へ出力する。 The reception data processing unit 22 restores the reception data from the received radio frame. The reception data processing unit 22 determines whether the restored reception data is radio resource control information. Since the process when it is not radio resource control information is basically the same as a normal process, description thereof is omitted. When the restored reception data is radio resource control information, the reception data processing unit 22 outputs the radio resource control information to the radio resource control unit 23.
　無線リソース制御部２３は、無線リソース制御情報に基づいて、無線リソース制御を行う。例えば、無線リソース制御情報が無線リソース追加情報である場合、追加された無線リソースを、自局が使用する無線リソースとして追加するキャリアアグリゲーションを行う。また、無線リソース制御情報が帰属先基地局情報である場合、帰属先基地局情報の基地局へのハンドオーバーを行う。 The radio resource control unit 23 performs radio resource control based on the radio resource control information. For example, when the radio resource control information is radio resource addition information, carrier aggregation is performed in which the added radio resource is added as a radio resource used by the own station. In addition, when the radio resource control information is attributed base station information, handover of the attributed base station information to the base station is performed.
　なお、移動局２は、災害、事件、イベント、不審者等を検出するためのカメラ、センサ等を備えるようにしてもよい。その場合、移動局２は、災害、事件、イベント、不審者等の情報を、重要通信に関する情報として、無線通信部２１を用いてデータ処理部４へ送信するようにしてもよい。 Note that the mobile station 2 may include a camera, a sensor, and the like for detecting disasters, incidents, events, suspicious persons, and the like. In that case, the mobile station 2 may transmit information such as a disaster, an incident, an event, and a suspicious person to the data processing unit 4 using the wireless communication unit 21 as information related to important communication.
　ここで、データ処理部４が移動局２に備えられている場合の移動局２の各ブロックの機能について簡単に説明する。 Here, the function of each block of the mobile station 2 when the data processing unit 4 is provided in the mobile station 2 will be briefly described.
　この場合、受信データ処理部２２は、データ処理部４の受信データ処理部４２と同様の機能を保持する。また、無線リソース制御部２３は、データ処理部４の重要通信事象検出部４３と同様の機能を保持する。さらに、送信データ処理部２４は、データ処理部４の送信データ処理部４４と同様の機能を保持する。 In this case, the reception data processing unit 22 has the same function as the reception data processing unit 42 of the data processing unit 4. The radio resource control unit 23 has the same function as the important communication event detection unit 43 of the data processing unit 4. Further, the transmission data processing unit 24 has the same function as the transmission data processing unit 44 of the data processing unit 4.
　図９は、本実施の形態２にかかる移動局２の処理例を示すフローチャートである。所定のタイミングにおいて、基地局から無線リソース増強情報を受信したか否かを判定する（ステップＳ４０１）。 FIG. 9 is a flowchart of a process example of the mobile station 2 according to the second embodiment. It is determined whether radio resource enhancement information has been received from the base station at a predetermined timing (step S401).
　無線リソース制御情報を受信していない場合（ステップＳ４０１でＮｏ）、再度無線リソース制御情報の受信を判定するステップＳ４０１に戻る。 If the radio resource control information has not been received (No in step S401), the process returns to step S401 for determining reception of the radio resource control information again.
　他方、無線リソース制御情報を受信している場合（ステップＳ４０１でＹｅｓ）、無線リソース制御情報に基づいて無線リソース制御を実行する。（ステップＳ４０２）。 On the other hand, when the radio resource control information is received (Yes in step S401), the radio resource control is executed based on the radio resource control information. (Step S402).
　続いて、図１０～図１２のシーケンス図を用いて、本実施の形態２にかかる通信システム１００Ａにおける無線リソース制御手順について説明する。なお、図１０～図１２の例では、重要通信に関する特定領域が含まれるセル１０＿２を運用する基地局１Ａ＿２からの連携情報に基づいて、基地局１Ａ＿１が無線リソース増強制御を行うことについて説明する。 Subsequently, a radio resource control procedure in the communication system 100A according to the second embodiment will be described with reference to the sequence diagrams of FIGS. In the examples of FIGS. 10 to 12, the base station 1A_1 performs radio resource enhancement control based on the cooperation information from the base station 1A_2 that operates the cell 10_2 including the specific area related to the important communication.
　まず、図１０を用いて、無線リソース増強要求及び無線リソース増強通知を用いる場合の例について説明する。ステップＳ５０１では、移動局２は基地局１Ａ＿２が形成しているセル１０＿２に帰属していることを示す。 First, an example of using a radio resource enhancement request and a radio resource enhancement notification will be described with reference to FIG. In step S501, it is indicated that the mobile station 2 belongs to the cell 10_2 formed by the base station 1A_2.
　次に、データ処理部４は、重要通信に関する事象を検出する（ステップＳ５０２）。次に、データ処理部４は、無線リソース増強通知を基地局１Ａ＿１に送信し（ステップＳ５０３）、且つ無線リソース増強要求を基地局１Ａ＿２へ送信する（ステップＳ５０４）。
次に、基地局１Ａ＿２は、連携情報を基地局１Ａ＿１へ送信する（ステップＳ５０５）。 Next, the data processing unit 4 detects an event related to important communication (step S502). Next, the data processing unit 4 transmits a radio resource enhancement notification to the base station 1A_1 (step S503), and transmits a radio resource enhancement request to the base station 1A_2 (step S504).
Next, base station 1A_2 transmits cooperation information to base station 1A_1 (step S505).
　次に、基地局１Ａ＿１は、連携情報に基づいて無線リソース増強制御を行う（ステップＳ５０６）。また、基地局１Ａ＿２は、無線リソース制御情報を移動局２へ送信する（ステップＳ５０７）。 Next, the base station 1A_1 performs radio resource enhancement control based on the cooperation information (step S506). Further, the base station 1A_2 transmits radio resource control information to the mobile station 2 (step S507).
　次に、移動局２は、無線リソース制御情報に基づいて無線リソース制御を実行する（ステップＳ５０８）。なお、図１０の例では、無線リソース制御情報が帰属先基地局情報である場合について示している。この場合、無線リソース制御の実行により、ステップＳ５０９に示すように、移動局２は基地局１Ａ＿１へ接続される。 Next, the mobile station 2 performs radio resource control based on the radio resource control information (step S508). In the example of FIG. 10, the case where the radio resource control information is attributed base station information is shown. In this case, as shown in step S509, the mobile station 2 is connected to the base station 1A_1 by executing the radio resource control.
　したがって、重要通信に関する特定領域又は特定の移動局群が位置するセル１０＿２を運用する基地局１Ａ＿２に帰属する移動局数を減らすことができる。すなわち、重要通信に関する特定領域又は特定の移動局群が位置するセル１０＿２内の無線リソースを増強することができる。 Therefore, it is possible to reduce the number of mobile stations belonging to the base station 1A_2 that operates the cell 10_2 in which a specific area or a specific mobile station group related to important communication is located. That is, it is possible to increase radio resources in the cell 10_2 where a specific area or a specific mobile station group related to important communication is located.
　なお、図１０には示していないが、無線リソース制御情報が無線リソース追加情報である場合、無線リソース制御として例えばキャリアアグリゲーションを実行する。これにより、移動局２は基地局１Ａ＿１及び基地局１Ａ＿２の両方に接続される。 Although not shown in FIG. 10, when the radio resource control information is radio resource addition information, for example, carrier aggregation is performed as radio resource control. Thereby, the mobile station 2 is connected to both the base station 1A_1 and the base station 1A_2.
　次に、図１１を用いて連携要求を用いる場合の例について説明する。図１１は、連携要求が、連携する基地局の情報を含む場合の例である。なお、図１１のステップＳ６０１、Ｓ６０２、Ｓ６０６～Ｓ６０９は、それぞれ図１０のステップＳ５０１、Ｓ５０２、Ｓ５０６～Ｓ５０９と同様であるため説明を省略する。 Next, an example of using a cooperation request will be described with reference to FIG. FIG. 11 is an example in the case where the cooperation request includes information on the base stations to cooperate with. Note that steps S601, S602, and S606 to S609 in FIG. 11 are the same as steps S501, S502, and S506 to S509 in FIG.
　重要通信に関する事象を検出（ステップＳ６０２）した後、データ処理部４は、連携要求を基地局１Ａ＿１及び基地局１Ａ＿２へ送信する（ステップＳ６０３、Ｓ６０４）。次に、基地局１Ａ＿２は、連携情報を基地局１Ａ＿１へ送信する（ステップＳ６０５）。 After detecting an event related to important communication (step S602), the data processing unit 4 transmits a cooperation request to the base station 1A_1 and the base station 1A_2 (steps S603 and S604). Next, base station 1A_2 transmits cooperation information to base station 1A_1 (step S605).
　次に、図１２を用いて連携要求を用いる場合の他の例について説明する。図１２は、連携要求が、連携する基地局の情報を含まない場合の例である。すなわち、データ処理部４は、重要通信に関する特定領域が含まれるセル１０＿２を運用する基地局１Ａ＿２の特定は行うが、当該基地局１Ａ＿２と連携する基地局の決定は行わない。なお、図１２のステップＳ７０１、Ｓ７０２、Ｓ７０９、Ｓ７１０は、それぞれ図１１のステップＳ６０１、Ｓ６０２、Ｓ６０８、Ｓ６０９と同様であるため説明を省略する。 Next, another example of using a cooperation request will be described with reference to FIG. FIG. 12 is an example in the case where the cooperation request does not include information on the base stations to cooperate with. That is, the data processing unit 4 specifies the base station 1A_2 that operates the cell 10_2 including the specific area related to important communication, but does not determine the base station that cooperates with the base station 1A_2. Note that steps S701, S702, S709, and S710 in FIG. 12 are the same as steps S601, S602, S608, and S609 in FIG.
　重要通信に関する事象を検出（ステップＳ７０２）した後、データ処理部４は、重要通信に関する特定領域が含まれるセル１０＿２を運用する基地局１Ａ＿２、及びセル１０＿２に隣接するセル又はセル１０＿２と位置的に重なっているセルを運用する複数の基地局に対して、連携要求を送信する（ステップＳ７０３、Ｓ７０４）。 After detecting an event related to important communication (step S702), the data processing unit 4 is positioned with respect to the base station 1A_2 that operates the cell 10_2 including the specific area related to important communication and the cell adjacent to the cell 10_2 or the cell 10_2. A cooperation request is transmitted to a plurality of base stations that operate overlapping cells (steps S703 and S704).
　次に、基地局１Ａ＿２は、セル１０＿２に隣接するセル又はセル１０＿２と位置的に重なっているセルを運用する複数の基地局に対して、連携情報を送信する（ステップＳ７０５）。 Next, the base station 1A_2 transmits cooperation information to a plurality of base stations that operate a cell adjacent to the cell 10_2 or a cell that overlaps with the cell 10_2 (step S705).
　ステップＳ７０３にて連携要求を受信し、ステップＳ７０５にて連携情報を受信した基地局は、基地局１Ａ＿２と連携可能か否かを判定し、連携可能である場合、基地局１Ａ＿２に対してＡＣＫ（Ａｃｋｎｏｗｌｅｄｇｅｍｅｎｔ）を送信する（ステップＳ７０６）。なお、連携可能な基地局は、基地局１Ａ＿２へ追加させる無線リソースの情報、又は自局の識別情報を、ＡＣＫと共に送信してもよい。 The base station that has received the cooperation request in step S703 and has received the cooperation information in step S705 determines whether or not cooperation with the base station 1A_2 is possible. When the cooperation is possible, the base station 1A_2 receives ACK ( Acknowledgment) is transmitted (step S706). Note that the base station that can be linked may transmit the information of the radio resource to be added to the base station 1A_2 or the identification information of the own station together with the ACK.
　ステップＳ７０６にてＡＣＫを送信した基地局は、連携情報に基づいて無線リソース増強制御を行う（ステップＳ７０７）。 The base station that transmitted the ACK in step S706 performs radio resource enhancement control based on the cooperation information (step S707).
　基地局１Ａ＿２は、ＡＣＫの受信（ステップＳ７０６）の後、無線リソース制御情報を生成して移動局２へ送信する（ステップＳ７０８）。ここで、基地局１Ａ＿２が送信する無線リソース制御情報は、ＡＣＫを送信した基地局によって追加された無線リソース追加情報、又はＡＣＫを送信した基地局へ帰属先の基地局を変更させるための帰属先基地局情報等である。 After receiving the ACK (step S706), the base station 1A_2 generates radio resource control information and transmits it to the mobile station 2 (step S708). Here, the radio resource control information transmitted by the base station 1A_2 is the radio resource additional information added by the base station that transmitted the ACK, or the attribution destination for changing the belonging base station to the base station that transmitted the ACK. Base station information and the like.
　続いて、無線リソース増強制御の具体例について説明する。無線リソース増強制御は、セル範囲の制御又はトラヒックオフロード制御である。すなわち、セル１０＿１及びセル１０＿２の少なくとも一方のセル範囲の制御又はトラヒックオフロード制御である。 Subsequently, a specific example of radio resource enhancement control will be described. The radio resource enhancement control is cell range control or traffic offload control. That is, it is control or traffic offload control of at least one cell range of the cell 10_1 and the cell 10_2.
　セル範囲の制御とは、基地局１Ａのアンテナチルト角、基地局１Ａのアンテナ方位角、基地局１Ａの送信電力、及びセル１０のハンドオーバー閾値のうちの少なくとも１つを変更して行う制御である。 The cell range control is control performed by changing at least one of the antenna tilt angle of the base station 1A, the antenna azimuth angle of the base station 1A, the transmission power of the base station 1A, and the handover threshold of the cell 10. is there.
　具体的には、重要通信が位置するセルを形成する基地局、及び当該基地局と連携する基地局のうち少なくとも一方のアンテナチルト角、アンテナ方位角、送信電力、及びハンドオーバー閾値のうちの少なくとも１つを変更する制御である。この制御は、重要通信が位置するセルの基地局に帰属する移動局数を減らす、又は重要通信が位置するセルで使用可能な無線リソースを追加するように行う。 Specifically, at least one of the antenna tilt angle, the antenna azimuth angle, the transmission power, and the handover threshold value of at least one of a base station that forms a cell in which important communication is located and a base station that cooperates with the base station. It is control which changes one. This control is performed so as to reduce the number of mobile stations belonging to the base station of the cell where the important communication is located, or to add radio resources that can be used in the cell where the important communication is located.
　例えば、基地局１Ａ＿２が、重要通信が位置するセル１０＿２のセル範囲を、重要通信に関する特定領域又は特定の移動局群はカバーするが、その他の領域又は移動局はカバーしない範囲となるように狭くし、このカバーされなくなった範囲を基地局１Ａ＿１のセル１０＿１により補うように制御する。 For example, the base station 1A_2 covers a cell range of the cell 10_2 in which important communication is located so that it covers a specific area or a specific mobile station group related to important communication, but does not cover other areas or mobile stations. Then, control is performed so that the range that is no longer covered is compensated by the cell 10_1 of the base station 1A_1.
　また、基地局１Ａ＿２は、重要通信が位置するセル１０＿２のセル範囲は変化させず、基地局１Ａ＿１が、セル１０＿１のセル範囲を、重要通信に関する特定領域又は特定の移動局群をカバーするようにオーバーレイさせるよう制御してもよい。この場合、オーバーレイさせるセルの周波数は、重要通信が位置するセル１０＿２の周波数と異なるようにする。また、基地局１Ａ＿２及び基地局１Ａ＿１の両方がセル範囲を変化させるようにしてもよい。 Also, the base station 1A_2 does not change the cell range of the cell 10_2 where the important communication is located, and the base station 1A_1 covers the cell range of the cell 10_1 to a specific area or a specific mobile station group related to the important communication. You may control to make it overlay. In this case, the frequency of the cell to be overlaid is different from the frequency of the cell 10_2 where the important communication is located. Further, both the base station 1A_2 and the base station 1A_1 may change the cell range.
　トラヒックオフロード制御とは、重要通信に関する特定領域を運用する基地局に帰属する移動局について、当該基地局のセル又は当該基地局と連携する基地局のセルに位置する移動局との端末間通信を介して、重要通信に関する特定領域を運用する基地局ではない基地局に接続させる制御である。例えば、重要通信に関する特定領域を運用する基地局１Ａ＿２に帰属する移動局のうち重要通信の対象外の移動局について、セル１０＿２又はセル１０＿１に位置する移動局との端末間通信を介して、基地局１Ａ＿１に強制的にハンドオーバーさせるようにする。これにより、重要通信が位置するセルの基地局に帰属する移動局数を減らすことができる。 Traffic offload control refers to inter-terminal communication between a mobile station belonging to a base station operating a specific area related to important communication and a mobile station located in a cell of the base station or a base station cell linked with the base station. This is control for connecting to a base station that is not a base station that operates a specific area related to important communication. For example, for mobile stations that belong to the base station 1A_2 that operates a specific area related to important communication, a mobile station that is not subject to important communication is connected to the base station via inter-terminal communication with the mobile station located in the cell 10_2 or the cell 10_1. The station 1A_1 is forcibly handed over. Thereby, the number of mobile stations belonging to the base station of the cell where the important communication is located can be reduced.
　以上のように、本発明の実施の形態２にかかる通信システム１００Ａでは、データ処理部４により、重要通信に関する事象を検出する構成としている。これにより、重要通信に関する事象を検出した場合に、基地局１Ａに対して無線リソースの増強制御を要求することができる。 As described above, in the communication system 100A according to the second embodiment of the present invention, the data processing unit 4 is configured to detect an event related to important communication. Thereby, when an event related to important communication is detected, it is possible to request the base station 1A to perform radio resource enhancement control.
　また、データ処理部４により、重要通信に関する特定領域が含まれるセルを運用する基地局を特定し、当該基地局と連携する基地局を決定する構成としている。これにより、重要通信に関する特定領域が含まれるセルを運用する基地局、及び当該基地局と連携する基地局が、連携して、無線リソースの増強制御を行うことができる。 In addition, the data processing unit 4 is configured to specify a base station that operates a cell including a specific area related to important communication and determine a base station that cooperates with the base station. As a result, the base station that operates the cell including the specific area related to the important communication and the base station that cooperates with the base station can perform radio resource enhancement control in cooperation with each other.
　また、基地局１Ａにより、無線リソース増強制御として、セル範囲の制御又はトラヒックオフロード制御を行う構成としている。これにより、重要通信に関する特定領域が含まれるセルを運用する基地局に帰属する移動局数を減らす、又は重要通信に関する特定領域が含まれるセルで使用可能な無線リソースを追加することができる。 The base station 1A is configured to perform cell range control or traffic offload control as radio resource enhancement control. Accordingly, it is possible to reduce the number of mobile stations belonging to a base station that operates a cell including a specific area related to important communication, or to add a radio resource that can be used in a cell including a specific area related to important communication.
　上述した実施の形態１及び２で述べた各装置（基地局１、基地局１Ａ、移動局２、及び基地局１Ａの上位装置）で行われる処理は、各装置が備えるＡＳＩＣ（Ａｐｐｌｉｃａｔｉｏｎ Ｓｐｅｃｉｆｉｃ Ｉｎｔｅｇｒａｔｅｄ Ｃｉｒｃｕｉｔ）、ＤＳＰ（Ｄｉｇｉｔａｌ Ｓｉｇｎａｌ Ｐｒｏｃｅｓｓｏｒ）、ＭＰＵ（Ｍｉｃｒｏ Ｐｒｏｃｅｓｓｉｎｇ Ｕｎｉｔ）若しくはＣＰＵ（Ｃｅｎｔｒａｌ Ｐｒｏｃｅｓｓｉｎｇ Ｕｎｉｔ）又はこれらの組み合わせを含むコンピュータ・システムを用いて実現することができる。具体的には、フローチャート又はシーケンス図を用いて説明した各装置の処理手順に関する命令群を含むプログラムをコンピュータ・システムに実行させればよい。 The processing performed in each device (base station 1, base station 1A, mobile station 2, and base station 1A) described in the first and second embodiments is ASIC (ApplicationＡSpecific Integrated Circuit) included in each device. ), DSP (Digital-Processor-Unit), MPU (Micro-Processing Unit), CPU (Central-Processing Unit), or a combination thereof. Specifically, the computer system may be made to execute a program including a group of instructions related to the processing procedure of each device described with reference to the flowcharts or sequence diagrams.
　これらのプログラムは、様々なタイプの非一時的なコンピュータ可読媒体（ｎｏｎ－ｔｒａｎｓｉｔｏｒｙ ｃｏｍｐｕｔｅｒ ｒｅａｄａｂｌｅ ｍｅｄｉｕｍ）を用いて格納され、コンピュータに供給することができる。非一時的なコンピュータ可読媒体は、様々なタイプの実体のある記録媒体（ｔａｎｇｉｂｌｅ ｓｔｏｒａｇｅ ｍｅｄｉｕｍ）を含む。非一時的なコンピュータ可読媒体の例は、磁気記録媒体（例えばフレキシブルディスク、磁気テープ、ハードディスクドライブ）、光磁気記録媒体（例えば光磁気ディスク）、ＣＤ－ＲＯＭ（Ｃｏｍｐａｃｔ Ｄｉｓｃ Ｒｅａｄ Ｏｎｌｙ Ｍｅｍｏｒｙ）、ＣＤ－Ｒ（Ｃｏｍｐａｃｔ Ｄｉｓｃ Ｒｅｃｏｒｄａｂｌｅ）、ＣＤ－Ｒ／Ｗ（Ｃｏｍｐａｃｔ Ｄｉｓｃ Ｒｅｗｒｉｔａｂｌｅ）、半導体メモリ（例えば、マスクＲＯＭ、ＰＲＯＭ（Ｐｒｏｇｒａｍｍａｂｌｅ ＲＯＭ）、ＥＰＲＯＭ（Ｅｒａｓａｂｌｅ ＰＲＯＭ）、フラッシュＲＯＭ、ＲＡＭ（ｒａｎｄｏｍ ａｃｃｅｓｓ ｍｅｍｏｒｙ））を含む。また、プログラムは、様々なタイプの一時的なコンピュータ可読媒体（ｔｒａｎｓｉｔｏｒｙ ｃｏｍｐｕｔｅｒ ｒｅａｄａｂｌｅ ｍｅｄｉｕｍ）によってコンピュータに供給されてもよい。一時的なコンピュータ可読媒体の例は、電気信号、光信号、及び電磁波を含む。一時的なコンピュータ可読媒体は、電線及び光ファイバ等の有線通信路、又は無線通信路を介して、プログラムをコンピュータに供給できる。 These programs can be stored using various types of non-transitory computer-readable media and supplied to a computer. Non-transitory computer readable media include various types of tangible storage media. Examples of non-transitory computer-readable media include magnetic recording media (for example, flexible disks, magnetic tapes, hard disk drives), magneto-optical recording media (for example, magneto-optical disks), CD-ROMs (Compact Read Only Memory), CD- R (Compact Disc Recordable), CD-R / W (Compact Disc Rewriteable), semiconductor memory (for example, mask ROM, PROM (Programmable ROM), EPROM (Erasable PROM), flash ROM, RAM (random access memory)) . The program may also be supplied to the computer by various types of transitory computer readable media. Examples of transitory computer readable media include electrical signals, optical signals, and electromagnetic waves. The temporary computer-readable medium can supply the program to the computer via a wired communication path such as an electric wire and an optical fiber, or a wireless communication path.
　以上、実施の形態を参照して本願発明を説明したが、本願発明は上記実施の形態によって限定されるものではない。本願発明の構成や詳細には、発明のスコープ内で当業者が理解し得る様々な変更をすることができる。 The present invention has been described above with reference to the embodiment, but the present invention is not limited to the above embodiment. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the invention.
　例えば、上述の実施の形態では、移動局が無線リソース制御を実行することについて説明したが、これに限らない。重要通信に関する特定領域が含まれるセルを運用する基地局（例えば基地局１Ａ＿２）が、無線リソース制御情報を送信するのに代えて、ハンドオーバー等の無線リソース制御を実行するようにしてもよい。 For example, in the above-described embodiment, the mobile station has performed radio resource control. However, the present invention is not limited to this. A base station (for example, base station 1A_2) that operates a cell including a specific area related to important communication may perform radio resource control such as handover instead of transmitting radio resource control information.
　上記の実施形態の一部又は全部は、以下の付記のようにも記載されうるが、以下には限られない。
［付記１］
　第１のセルを運用する第１の基地局と、
　第２のセルを運用する第２の基地局と、を備え、
　前記第１の基地局は、重要通信に関する事象に起因し、前記重要通信に関する特定領域又は特定の移動局群に対して割当可能な無線リソースの増強制御を、前記第２の基地局と連携して行う無線リソース増強制御手段を有する、
　通信システム。
［付記２］
　前記事象を検出するデータ処理手段をさらに備える、付記１に記載の通信システム。
［付記３］
　前記事象は、突発的な発生、又は突発的な発生予測に関する、
　付記２に記載の通信システム。
［付記４］
　前記突発的な発生に関する検出は、カメラ又はセンサによる災害、事件、又はイベントの検出、及び消防又は警察の出動指令の受信のうちの少なくとも１つである、
　付記３に記載の通信システム。
［付記５］
　前記突発的な発生予測に関する検出は、データ解析による災害又は事件の予測、及び不審者検出による事件の予測のうちの少なくとも１つである、
　付記３又は４に記載の通信システム。
［付記６］
　前記データ処理手段は、前記第１の基地局、前記第２の基地局、前記第１の基地局又は前記第２の基地局の上位装置、及び前記第１の基地局又は前記第２の基地局に帰属する移動局のうちの少なくとも１つに備えられる、
　付記２～５のいずれか１項に記載の通信システム。
［付記７］
　前記無線リソースの増強制御は、第１のセル及び第２のセルの少なくとも一方のセル範囲の制御、又はトラヒックオフロード制御である、
　付記１～６のいずれか１項に記載の通信システム。
［付記８］
　前記セル範囲の制御は、前記第１の基地局のアンテナチルト角、前記第２の基地局のアンテナチルト角、前記第１の基地局のアンテナ方位角、前記第２の基地局のアンテナ方位角、前記第１の基地局の送信電力、前記第２の基地局の送信電力、前記第１のセルのハンドオーバー閾値、及び前記第２のセルのハンドオーバー閾値のうちの少なくとも１つを変更して行う制御である、
　付記７に記載の通信システム。
［付記９］
　前記セル範囲の制御は、前記特定領域を運用する基地局に帰属する移動局数を減らす、又は前記特定領域で使用可能な無線リソースを追加するように行う、
　付記７又は８に記載の通信システム。
［付記１０］
　前記トラヒックオフロード制御は、前記特定領域を運用する基地局に帰属する移動局について、当該基地局のセル又は当該基地局と連携する基地局のセルに位置する移動局との端末間通信を介して前記特定領域を運用する基地局ではない基地局に接続させる制御である、
　付記７～９のいずれか１項に記載の通信システム。
［付記１１］
　前記トラヒックオフロード制御は、前記特定領域を運用する基地局に帰属する前記重要通信の対象外の移動局について、当該基地局のセル又は当該基地局と連携する基地局のセルに位置する移動局との端末間通信を介して前記特定領域を運用する基地局ではない基地局に接続させる制御である、
　付記７～９のいずれか１項に記載の通信システム。
［付記１２］
　前記第１の基地局又は前記第２の基地局は、無線リソース制御情報を移動局へ送信する、付記１～１１のいずれか１項に記載の通信システム。
［付記１３］
　前記無線リソース制御情報を受信した移動局は、前記無線リソース制御情報に基づいて、ハンドオーバー又はキャリアアグリゲーションを行う、
　付記１２に記載の通信システム。
［付記１４］
　前記第１の基地局と前記第２の基地局とは、異なる運用事業者によって管理される基地局、又は異なる無線システムの基地局である、
　付記１～１３のいずれか１項に記載の通信システム。
［付記１５］
　重要通信に関する事象に起因し、前記重要通信に関する特定領域又は特定の移動局群に対して割当可能な無線リソースの増強制御を、他の基地局と連携して行う無線リソース増強制御手段を備える、
　基地局装置。
［付記１６］
　基地局における動的無線リソース制御方法であって、
重要通信に関する事象に起因し、前記重要通信に関する特定領域又は特定の移動局群に対して割当可能な無線リソースの増強制御を、他の基地局と連携して行う、
　動的無線リソース制御方法。 A part or all of the above-described embodiment can be described as in the following supplementary notes, but is not limited thereto.
[Appendix 1]
A first base station operating a first cell;
A second base station that operates the second cell,
The first base station cooperates with the second base station to increase control of radio resources that can be allocated to a specific region or a specific mobile station group related to the important communication due to an event related to the important communication. Radio resource enhancement control means
Communications system.
[Appendix 2]
The communication system according to appendix 1, further comprising data processing means for detecting the event.
[Appendix 3]
The event relates to sudden occurrence, or sudden occurrence prediction,
The communication system according to attachment 2.
[Appendix 4]
The detection relating to the sudden occurrence is at least one of detection of a disaster, an incident, or an event by a camera or a sensor, and reception of a fire or police dispatch command.
The communication system according to attachment 3.
[Appendix 5]
The detection related to the unexpected occurrence prediction is at least one of a prediction of a disaster or an incident by data analysis and an prediction of an incident by detection of a suspicious person.
The communication system according to attachment 3 or 4.
[Appendix 6]
The data processing means includes the first base station, the second base station, the first base station or the host device of the second base station, and the first base station or the second base. Provided in at least one of the mobile stations belonging to the station,
The communication system according to any one of appendices 2 to 5.
[Appendix 7]
The radio resource enhancement control is control of a cell range of at least one of the first cell and the second cell, or traffic offload control.
The communication system according to any one of appendices 1 to 6.
[Appendix 8]
Control of the cell range includes antenna tilt angle of the first base station, antenna tilt angle of the second base station, antenna azimuth angle of the first base station, antenna azimuth angle of the second base station. Changing at least one of the transmission power of the first base station, the transmission power of the second base station, the handover threshold of the first cell, and the handover threshold of the second cell Control
The communication system according to attachment 7.
[Appendix 9]
The cell range control is performed so as to reduce the number of mobile stations belonging to a base station operating the specific area, or to add a radio resource that can be used in the specific area.
The communication system according to appendix 7 or 8.
[Appendix 10]
The traffic offload control is performed for a mobile station belonging to a base station that operates the specific area via inter-terminal communication with a mobile station located in a cell of the base station or a cell of a base station that cooperates with the base station. Control to connect to a base station that is not a base station that operates the specific area.
The communication system according to any one of appendices 7 to 9.
[Appendix 11]
The traffic offload control is a mobile station located in a cell of the base station or a cell of a base station that cooperates with the base station, for a mobile station that is not subject to the important communication belonging to the base station that operates the specific area. Is a control for connecting to a base station that is not a base station that operates the specific area via inter-terminal communication with
The communication system according to any one of appendices 7 to 9.
[Appendix 12]
The communication system according to any one of appendices 1 to 11, wherein the first base station or the second base station transmits radio resource control information to a mobile station.
[Appendix 13]
The mobile station that has received the radio resource control information performs handover or carrier aggregation based on the radio resource control information.
The communication system according to attachment 12.
[Appendix 14]
The first base station and the second base station are base stations managed by different operators or base stations of different radio systems.
14. The communication system according to any one of appendices 1 to 13.
[Appendix 15]
Radio resource enhancement control means for performing enhancement control of radio resources that can be allocated to a specific region or a specific mobile station group related to important communication due to an event related to important communication in cooperation with another base station,
Base station device.
[Appendix 16]
A dynamic radio resource control method in a base station, comprising:
Due to an event related to important communication, radio resource enhancement control that can be allocated to a specific area or a specific mobile station group related to the important communication is performed in cooperation with another base station.
Dynamic radio resource control method.
　この出願は、２０１６年５月３１日に出願された日本出願特願２０１６－１０８７５６を基礎とする優先権を主張し、その開示の全てをここに取り込む。 This application claims priority based on Japanese Patent Application No. 2016-108756 filed on May 31, 2016, the entire disclosure of which is incorporated herein.
１＿１、１Ａ＿１、１＿２、１Ａ＿２　　基地局
２＿１、２＿２　　移動局
４　　データ処理部
１０＿１、１０＿２　　セル
１１、１１Ａ　無線リソース増強制御部
１００、１００Ａ　　通信システム 1_1, 1A_1, 1_2, 1A_2 Base station 2_1, 2_2 Mobile station 4 Data processing unit 10_1, 10_2 Cell 11, 11A Radio resource enhancement control unit 100, 100A Communication system

Claims (16)

  1. 　第１のセルを運用する第１の基地局と、
    　第２のセルを運用する第２の基地局と、を備え、
    　前記第１の基地局は、重要通信に関する事象に起因し、前記重要通信に関する特定領域又は特定の移動局群に対して割当可能な無線リソースの増強制御を、前記第２の基地局と連携して行う無線リソース増強制御手段を有する、
    　通信システム。     A first base station operating a first cell;
    A second base station that operates the second cell,
    The first base station cooperates with the second base station to increase control of radio resources that can be allocated to a specific region or a specific mobile station group related to the important communication due to an event related to the important communication. Radio resource enhancement control means
    Communications system.
  2. 　前記事象を検出するデータ処理手段をさらに備える、請求項１に記載の通信システム。 The communication system according to claim 1, further comprising data processing means for detecting the event.
  3. 　前記事象は、突発的な発生、又は突発的な発生予測に関する、
    　請求項２に記載の通信システム。     The event relates to sudden occurrence, or sudden occurrence prediction,
    The communication system according to claim 2.
  4. 　前記突発的な発生に関する検出は、カメラ又はセンサによる災害、事件、又はイベントの検出、及び消防又は警察の出動指令の受信のうちの少なくとも１つである、
    　請求項３に記載の通信システム。     The detection relating to the sudden occurrence is at least one of detection of a disaster, an incident, or an event by a camera or a sensor, and reception of a fire or police dispatch command.
    The communication system according to claim 3.
  5. 　前記突発的な発生予測に関する検出は、データ解析による災害又は事件の予測、及び不審者検出による事件の予測のうちの少なくとも１つである、
    　請求項３又は４に記載の通信システム。     The detection related to the unexpected occurrence prediction is at least one of a prediction of a disaster or an incident by data analysis and an prediction of an incident by detection of a suspicious person.
    The communication system according to claim 3 or 4.
  6. 　前記データ処理手段は、前記第１の基地局、前記第２の基地局、前記第１の基地局又は前記第２の基地局の上位装置、及び前記第１の基地局又は前記第２の基地局に帰属する移動局のうちの少なくとも１つに備えられる、
    　請求項２～５のいずれか１項に記載の通信システム。     The data processing means includes the first base station, the second base station, the first base station or the host device of the second base station, and the first base station or the second base. Provided in at least one of the mobile stations belonging to the station,
    The communication system according to any one of claims 2 to 5.
  7. 　前記無線リソースの増強制御は、第１のセル及び第２のセルの少なくとも一方のセル範囲の制御、又はトラヒックオフロード制御である、
    　請求項１～６のいずれか１項に記載の通信システム。     The radio resource enhancement control is control of a cell range of at least one of the first cell and the second cell, or traffic offload control.
    The communication system according to any one of claims 1 to 6.
  8. 　前記セル範囲の制御は、前記第１の基地局のアンテナチルト角、前記第２の基地局のアンテナチルト角、前記第１の基地局のアンテナ方位角、前記第２の基地局のアンテナ方位角、前記第１の基地局の送信電力、前記第２の基地局の送信電力、前記第１のセルのハンドオーバー閾値、及び前記第２のセルのハンドオーバー閾値のうちの少なくとも１つを変更して行う制御である、
    　請求項７に記載の通信システム。     Control of the cell range includes antenna tilt angle of the first base station, antenna tilt angle of the second base station, antenna azimuth angle of the first base station, antenna azimuth angle of the second base station. Changing at least one of the transmission power of the first base station, the transmission power of the second base station, the handover threshold of the first cell, and the handover threshold of the second cell Control
    The communication system according to claim 7.
  9. 　前記セル範囲の制御は、前記特定領域を運用する基地局に帰属する移動局数を減らす、又は前記特定領域で使用可能な無線リソースを追加するように行う、
    　請求項７又は８に記載の通信システム。     The cell range control is performed so as to reduce the number of mobile stations belonging to a base station operating the specific area, or to add a radio resource that can be used in the specific area.
    The communication system according to claim 7 or 8.
  10. 　前記トラヒックオフロード制御は、前記特定領域を運用する基地局に帰属する移動局について、当該基地局のセル又は当該基地局と連携する基地局のセルに位置する移動局との端末間通信を介して前記特定領域を運用する基地局ではない基地局に接続させる制御である、
    　請求項７～９のいずれか１項に記載の通信システム。     The traffic offload control is performed for a mobile station belonging to a base station that operates the specific area via inter-terminal communication with a mobile station located in a cell of the base station or a cell of a base station that cooperates with the base station. Control to connect to a base station that is not a base station that operates the specific area.
    The communication system according to any one of claims 7 to 9.
  11. 　前記トラヒックオフロード制御は、前記特定領域を運用する基地局に帰属する前記重要通信の対象外の移動局について、当該基地局のセル又は当該基地局と連携する基地局のセルに位置する移動局との端末間通信を介して前記特定領域を運用する基地局ではない基地局に接続させる制御である、
    　請求項７～９のいずれか１項に記載の通信システム。     The traffic offload control is a mobile station located in a cell of the base station or a cell of a base station that cooperates with the base station, for a mobile station that is not subject to the important communication belonging to the base station that operates the specific area. Is a control for connecting to a base station that is not a base station that operates the specific area via inter-terminal communication with
    The communication system according to any one of claims 7 to 9.
  12. 　前記第１の基地局又は前記第２の基地局は、無線リソース制御情報を移動局へ送信する、請求項１～１１のいずれか１項に記載の通信システム。 The communication system according to any one of claims 1 to 11, wherein the first base station or the second base station transmits radio resource control information to a mobile station.
  13. 　前記無線リソース制御情報を受信した移動局は、前記無線リソース制御情報に基づいて、ハンドオーバー又はキャリアアグリゲーションを行う、
    　請求項１２に記載の通信システム。     The mobile station that has received the radio resource control information performs handover or carrier aggregation based on the radio resource control information.
    The communication system according to claim 12.
  14. 　前記第１の基地局と前記第２の基地局とは、異なる運用事業者によって管理される基地局、又は異なる無線システムの基地局である、
    　請求項１～１３のいずれか１項に記載の通信システム。     The first base station and the second base station are base stations managed by different operators or base stations of different radio systems.
    The communication system according to any one of claims 1 to 13.
  15. 　重要通信に関する事象に起因し、前記重要通信に関する特定領域又は特定の移動局群に対して割当可能な無線リソースの増強制御を、他の基地局と連携して行う無線リソース増強制御手段を備える、
    　基地局装置。     Radio resource enhancement control means for performing enhancement control of radio resources that can be allocated to a specific region or a specific mobile station group related to important communication due to an event related to important communication in cooperation with another base station,
    Base station device.
  16. 　基地局における動的無線リソース制御方法であって、
    重要通信に関する事象に起因し、前記重要通信に関する特定領域又は特定の移動局群に対して割当可能な無線リソースの増強制御を、他の基地局と連携して行う、
    　動的無線リソース制御方法。     A dynamic radio resource control method in a base station, comprising:
    Due to an event related to important communication, radio resource enhancement control that can be allocated to a specific area or a specific mobile station group related to the important communication is performed in cooperation with another base station.
    Dynamic radio resource control method.
PCT/JP2017/018953 2016-05-31 2017-05-22 Communication system, base station device, and dynamic radio resource control method WO2017208874A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2018520806A JPWO2017208874A1 (en) 2016-05-31 2017-05-22 Communication system, base station apparatus, and dynamic radio resource control method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016-108756 2016-05-31
JP2016108756 2016-05-31

Publications (1)

Publication Number Publication Date
WO2017208874A1 true WO2017208874A1 (en) 2017-12-07

Family

ID=60477505

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2017/018953 WO2017208874A1 (en) 2016-05-31 2017-05-22 Communication system, base station device, and dynamic radio resource control method

Country Status (2)

Country Link
JP (1) JPWO2017208874A1 (en)
WO (1) WO2017208874A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003258702A (en) * 2002-02-28 2003-09-12 Toshiba Corp Information distributing method, distributor and repeater
JP2010206527A (en) * 2009-03-03 2010-09-16 Mitsubishi Electric Corp Device for controlling frequency band allocation
WO2014027436A1 (en) * 2012-08-17 2014-02-20 ソフトバンクモバイル株式会社 Communication device, communication method, communication system, and program
JP2016514412A (en) * 2013-03-01 2016-05-19 リバダ ネットワークス エルエルシーＲｉｖａｄａ Ｎｅｔｗｏｒｋｓ Ｌｌｃ Method and system for dynamic spectrum arbitration

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003258702A (en) * 2002-02-28 2003-09-12 Toshiba Corp Information distributing method, distributor and repeater
JP2010206527A (en) * 2009-03-03 2010-09-16 Mitsubishi Electric Corp Device for controlling frequency band allocation
WO2014027436A1 (en) * 2012-08-17 2014-02-20 ソフトバンクモバイル株式会社 Communication device, communication method, communication system, and program
JP2016514412A (en) * 2013-03-01 2016-05-19 リバダ ネットワークス エルエルシーＲｉｖａｄａ Ｎｅｔｗｏｒｋｓ Ｌｌｃ Method and system for dynamic spectrum arbitration

Also Published As

Publication number Publication date
JPWO2017208874A1 (en) 2019-03-28

Similar Documents

Publication Publication Date Title
JP7306540B2 (en) Wireless terminals, masternodes and methods performed by them
JP6954993B2 (en) Wireless communication system and wireless base station
WO2020144918A1 (en) Wireless access network node, wireless terminal, and method for node and terminal
WO2020144917A1 (en) Distributed unit, central unit, wireless access network node, and method for distributed unit, central unit, and wireless access network node
JP6443326B2 (en) Wireless communication system, wireless station, communication control method, and program
JP2024150468A (en) QoS Management by ProSe Remote and Relay Entities
US10976402B2 (en) Unmanned arial vehicle recovery mechanism
CN104718783A (en) Reducing call drops in uplink power limited scenarios
US9913105B2 (en) Communication system, service platform, communication method, and non-transitory computer readable medium
EP2763449B1 (en) Emergency processing method and apparatus
US9374817B2 (en) Radio base station notifying available radio resource amount
EP2451199B1 (en) Warning message transmission method and apparatus
AU2013335167B2 (en) Method and apparatus for supporting cross jurisdictional mutual aid requests
CN105682019B (en) Early warning method and system
CN104394073A (en) Data route as well as method and equipment of controlling data route
US20220038922A1 (en) System and method for creating and managing private subnetworks of lte base stations
WO2017208874A1 (en) Communication system, base station device, and dynamic radio resource control method
CN103096325B (en) A kind of mourn in silence processing method and device of control channel
US20230027476A1 (en) Adaptive cell-shaping in a cellular network
US9503874B2 (en) Communication of critical data
US11445466B2 (en) Base station configured to provide distance filtering
US20220086801A1 (en) Method, device and computer readable medium for resource selection
CN117793761A (en) User plane function capacity-extinguishing method, device and storage medium
WO2023147863A1 (en) Radio link monitoring in multiple transmitter receiver point scenario
CN117177249A (en) Communication resource management method, device and system

Legal Events

Date Code Title Description
ENP Entry into the national phase

Ref document number: 2018520806

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

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

Ref document number: 17806431

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 17806431

Country of ref document: EP

Kind code of ref document: A1