JP5520681B2 - Communication system, radio base station, and communication control method - Google Patents

Description

  The present invention relates to a communication system, a radio base station, a network device, and a communication control method used in a heterogeneous network in which various radio base stations are mixed.

In recent years, along with the development of wireless communication technology, small private wireless base stations operated by specific users (specific individuals or specific organizations) have been put into practical use. In 3GPP standardization organization for mobile communication systems (3 ^rd Generation Partnership Project), above private radio base station is the home radio base station (HeNB: Home eNodeB) and called the specification of the home radio base station is standardized Yes. With the spread of home radio base stations, it is possible to distribute the load of public radio base stations to home radio base stations.

  The home radio base station restricts a radio terminal (UE: User Equipment) that permits access to its own station to a radio terminal of a specific user (hereinafter, access restriction) It is possible to set any access type for permitting access to. The communication area of the home radio base station where access is restricted is referred to as a CSG (Closed Subscriber Group) cell. In the CSG cell, access to a home radio base station from a third-party radio terminal other than a specific user registered in advance is denied (see, for example, Non-Patent Document 1).

3GPP TS 36.300 V9.1.0 (2009-09), “Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2”, 4.6 Support of HeNB

  By the way, when there are a large number of wireless terminals in an area where a public wireless base station provides a communication service, the wireless resources (frequency, time slot, etc.) of the public base station are insufficient. The base station preferably releases its own radio resources to a third party without restricting access.

  However, the presence or absence of access restrictions on the home radio base station is assumed to be set according to the will of a specific user who operates the home radio base station, and the problem that the radio resources of the home radio base station cannot be effectively used was there.

  Therefore, an object of the present invention is to provide a communication system, a radio base station, a network device, and a communication control method that can effectively use radio resources.

In order to solve the above-described problems, the present invention has the following features. First, the communication system according to the present invention is characterized in that a radio base station operated by a specific user (for example, a home radio base station HeNB) and information on the high demand for radio resources of the radio base station (for example, purchase price information) Or a network device (for example, server device 100) that transmits resource usage information) to the wireless base station, and the wireless base station receives information related to the high demand (network communication unit 240). And switching whether or not to perform access restriction that restricts a wireless terminal that permits access to the local station only to the wireless terminal of the specific user, based on the information about the high demand received by the receiving unit. control unit for controlling the (control unit 220) possess information about the height of the demand, to the specific user in accordance with the height of the demand And summarized in that indicating the price to be paid.

  According to such a feature, the radio base station dynamically controls switching whether or not to perform access restriction based on information related to the high demand for radio resources of the local station. Effective utilization can be achieved.

  Another feature of the communication system according to the present invention is the communication system according to the above feature, wherein the control unit performs the access restriction and relates to the high demand received by the receiving unit. The gist is to control to release the access restriction when the information satisfies the release condition set by the specific user.

  Another feature of the communication system according to the present invention is that, in the communication system according to the above feature, the network device transmits a use status of a radio resource of the peripheral base station from a peripheral base station around the radio base station. An information collection unit (information collection unit 121) that collects resource usage information to be shown, and an information generation unit (information generation unit) that generates information related to the level of demand based on the resource usage information collected by the information collection unit 123).

  Another feature of the communication system according to the present invention is that, in the communication system according to the above feature, the information generation unit is configured to measure the demand according to a result of statistical analysis of the resource usage information collected by the information collection unit. The gist is to generate information about the height.

  Another feature of the communication system according to the present invention is that in the communication system according to the above feature, the network device generates information related to the height of the demand based on information of an event performed around the radio base station. The gist is to further include an information generation unit (information generation unit 123).

  Another feature of the communication system according to the present invention is that, in the communication system according to the above feature, the network device transmits information indicating that the access restriction is prohibited to the radio base station, and the control unit includes: The gist is to perform control so that the access restriction is not performed when information indicating that the access restriction is prohibited is received from a network device.

  Another feature of the communication system according to the present invention is that, in the communication system according to the above feature, the network device transmits information to the effect that the access restriction is forced, to the radio base station, The gist is to perform control so that the access restriction is performed when information indicating that the access restriction is forced is received from a network device.

A feature of the radio base station according to the present invention is a radio base station operated by a specific user (for example, a home radio base station HeNB), and a reception unit that receives information on the high demand for radio resources of the own station ( Based on the information on the high demand received by the network communication unit 240) and the reception unit, whether to restrict access to restrict the wireless terminals permitted to access the local station to only the wireless terminal of the specific user possess controller for controlling whether or not switching between (control unit 220), information about the height of the demand is summarized in that indicating the price to be paid to the specific user in accordance with the height of the demand .

The communication control method according to the present invention is characterized in that a network device transmits information related to a high demand for radio resources of a radio base station operated by a specific user to the radio base station; A wireless terminal that permits access to the mobile station based on the information related to the high demand received in the receiving step, wherein the wireless base station receives information related to the high demand. possess and controlling the wireless terminal only switch whether to restrict access to limited specific user, information about the height of the demand will be paid to the specific user in accordance with the height of the demand The gist is to indicate the price .

  According to the present invention, it is possible to provide a communication system, a radio base station, a network device, and a communication control method that can effectively use radio resources.

1 is a schematic configuration diagram of a communication system according to a first embodiment. It is the schematic which shows an example of the actual use environment of a public radio base station and a home radio base station. It is a block block diagram of the server apparatus which concerns on 1st Embodiment. It is a block block diagram of the home radio base station which concerns on 1st Embodiment. It is an operation | movement sequence diagram which shows operation | movement of the communication system which concerns on 1st Embodiment. It is an operation | movement sequence diagram which shows operation | movement of the communication system which concerns on 2nd Embodiment. It is an operation | movement sequence diagram which shows operation | movement of the communication system which concerns on 3rd Embodiment. It is an operation | movement sequence diagram which shows operation | movement of the communication system which concerns on 4th Embodiment. It is an operation | movement sequence diagram which shows operation | movement at the time of combining 2nd Embodiment and 4th Embodiment.

  The first to fourth embodiments of the present invention and other embodiments will be described with reference to the drawings. In the drawings in the following embodiments, the same or similar parts are denoted by the same or similar reference numerals.

(1) First Embodiment In the first embodiment, (1.1) the configuration of the communication system, (1.2) the operation of the communication system according to the first embodiment, (1.4) the first embodiment. It demonstrates in order of an effect.

(1.1) Configuration of Communication System (1.1.1) Overall Schematic Configuration FIG. 1 is a schematic configuration diagram of a communication system according to the first embodiment. The communication system is configured based on LTE (3GPP Release 8 or Release 9), which is a 3.9 generation (3.9G) cellular communication system, or is positioned as a 4th generation (4G) cellular communication system. -It has a configuration based on Advanced.

  As shown in FIG. 1, a plurality of public radio base stations eNB, a plurality of home radio base stations HeNB, and a gateway device (HeNB GW: Home eNodeB Gateway) constitute an E-UTRAN (Evolved-UMTS Terrestrial Radio Access Network). To do. Each public radio base station eNB and each home radio base station HeNB form a cell that is an area for providing a communication service to the radio terminal UE.

  Each public radio base station eNB is a macro cell base station that forms a large cell (macro cell), for example. Each public radio base station eNB is operated by a communication carrier. Each public radio base station eNB can communicate with each other via an X2 interface which is a logical communication path that provides communication between base stations. Each public radio base station eNB can communicate with the server apparatus 100 of the core network 50 via the S1 interface and a gateway apparatus (S-GW: Serving Gateway). Each public radio base station eNB transmits / receives a control message to / from a mobility management device (MME: Mobility Management Entity) via the S1 interface.

  Each home radio base station HeNB is, for example, a femtocell base station that forms a small cell (femtocell). Each home radio base station HeNB can communicate with the server apparatus 100 of the core network 50 via the S1 interface and the gateway apparatus (HeNB GW, S-GW). Each home radio base station HeNB transmits / receives a control message to / from the mobility management apparatus (MME) via the S1 interface.

  Each home radio base station HeNB is a small radio base station owned by a specific user or a small radio base station lent to a specific user from a communication carrier, and is operated by the specific user. Each home radio base station HeNB is connected to a general communication line (ADSL or optical line) contracted by a specific user. The home radio base station HeNB can set an access type such as “closed” or “open” (or “hybrid”). In “closed”, only the access of the radio terminal UE of the specific user is permitted (access restriction).

  On the other hand, in “open” (or “hybrid”), access not only to the radio terminal UE of a specific user but also to radio terminals UE of users other than the specific user is permitted. In addition, there is an access type “hybrid” that makes the service quality of the radio terminal UE of a specific user higher than the service quality of a radio terminal UE of a user other than the specific user without restricting access, but “open” ( Or “hybrid”).

  The home radio base station HeNB and the mobility management device (MME) perform access control according to the access type. Refer to Non-Patent Document 1 and 3GPP TS 36.331 “Evolved Universal Terrestrial Radio Access (E-UTRA) Radio Resource Control (RRC) Protocol specification” for details of access types and access control.

  FIG. 2 is a schematic diagram illustrating an example of an actual usage environment of the public radio base station eNB and the home radio base station HeNB.

  As shown in FIG. 2, when there are many radio terminals UE in the communication area of the public radio base station eNB, radio resources of the public radio base station eNB are insufficient. In this case, if the home radio base station HeNB in the communication area has the access type set to “closed”, the radio terminal UE is in the communication area of the public radio base station eNB and is a user other than the specific user. Wireless terminal UE cannot receive a good communication service.

  Therefore, in the first embodiment, on the premise of payment of a usage fee from a telecommunications carrier to a specific user who operates the home radio base station HeNB, the server device 100 of the telecommunications carrier periodically changes the home radio base station HeNB. The purchase price information indicating the purchase price corresponding to the current demand for the radio resource is transmitted to the home radio base station HeNB.

  The home radio base station HeNB switches the access type to “open” (or “hybrid”) or “closed” according to the purchase price information received from the server apparatus 100. For the period when the access type is “open” (or “hybrid”), the use according to the purchase price in that period as a return to the use of the home radio base station HeNB by the radio terminal UE of the user other than the specific user A fee is paid from a carrier to a specific user.

(1.1.2) Configuration of Server Device FIG. 3 is a block configuration diagram of the server device 100.

  As illustrated in FIG. 3, the server device 100 includes a network communication unit 110, a control unit 120, and a storage unit 130.

  The network communication unit 110 performs communication with the home radio base station HeNB and the mobility management device MME. The control unit 120 is configured using a CPU, for example, and controls various functions provided in the server device 100. The storage unit 130 is configured using, for example, a memory, and stores various types of information used for controlling the server device 100 and the like.

  The control unit 120 includes an information collection unit 121, an information analysis unit 122, and an information generation unit 123.

  The information collection unit 121 uses the radio resource usage status of the public radio base station eNB from the public radio base station eNB in the vicinity of the home radio base station HeNB, specifically, the usage amount (or usage rate) of the radio resource, Alternatively, resource usage information indicating the remaining radio resource is collected.

  The information analysis unit 122 performs statistical analysis of the resource usage information collected by the information collection unit 121 (for example, trend prediction of radio resource consumption in the public radio base station eNB, radio resource consumption of each of the plurality of public radio base stations eNB The present demand for the radio resources of the home radio base station HeNB is analyzed.

  The information generation unit 123 generates purchase price information according to the result of statistical analysis by the information analysis unit 122. The information generation unit 123 generates purchase price information such that the higher the current demand for the radio resources of the home radio base station HeNB, the higher the purchase price is.

  The information generation unit 123 may generate information indicating that access restriction is prohibited in accordance with the result of statistical analysis performed by the information analysis unit 122. For example, when the remaining amount of radio resources of the public radio base station eNB decreases, the information generation unit 123 considers that the radio resources of the home radio base station HeNB need to be released to a third party, and prohibits access restriction Generate information to the effect.

  Moreover, the information generation part 123 may transmit the information to the effect that access restriction is forced to the home radio base station HeNB according to the result of the statistical analysis by the information analysis part 122. For example, when the remaining amount of radio resources of the public radio base station eNB is sufficient, the information generation unit 123 assumes that it is not necessary to release the radio resources of the home radio base station HeNB to a third party, and forcibly restricts access. Generate information to the effect.

  The network communication unit 110 transmits the information generated by the information generation unit 123 to the home radio base station HeNB. Note that, in the first embodiment, the network communication unit 110 corresponds to a transmission unit that transmits purchase price information as information related to high demand.

(1.1.3) Configuration of Home Radio Base Station FIG. 4 is a block configuration diagram of the home radio base station HeNB.

  As illustrated in FIG. 4, the home radio base station HeNB includes an antenna unit 201, a radio communication unit 210, a control unit 220, a storage unit 230, and a network communication unit 240.

  The wireless communication unit 210 is configured using, for example, an RF circuit, a baseband processor, and the like, and transmits and receives wireless signals via the antenna unit 201. In addition, the wireless communication unit 210 performs encoding and modulation of a transmission signal and demodulation and decoding of a reception signal.

  The control unit 220 is configured using, for example, a CPU, and controls various functions provided in the home radio base station HeNB. The storage unit 230 is configured using, for example, a memory, and stores various types of information used for controlling the home radio base station HeNB. In addition, the storage unit 230 stores an access restriction release condition and an access restriction start condition set by a specific user.

  The network communication unit 240 communicates with the server device 100 and the mobility management device MME. The network communication unit 240 corresponds to a receiving unit that receives purchase price information as information related to high demand.

  The control unit 220 includes a condition determination unit 221 and an access type switching unit 222.

  When the own station performs access restriction (that is, when the own station's access type is “closed”), the condition determining unit 221 determines that the purchase price information received by the network communication unit 240 is received by the specific user. It is determined whether or not the set access restriction release condition is satisfied. The condition determination unit 221 receives the network communication unit 240 when the own station does not restrict access (that is, when the access type of the own station is “open” (or “hybrid”)). It is determined whether or not the purchase price information satisfies the access restriction start condition set by the specific user.

  The access restriction release condition and the access restriction start condition can be set to the same threshold, for example. In this case, the condition determination unit 221 determines that the access restriction release condition is satisfied when the purchase price corresponding to the purchase price information exceeds the threshold, and accesses when the purchase price corresponding to the purchase price information falls below the threshold. It is determined that the restriction start condition is satisfied.

  When the access type of the local station is “closed” and the purchase price information satisfies the access restriction release condition, the access type switching unit 222 changes the access type of the local station from “closed” to “open” (or “hybrid”). ”). On the other hand, if the access type of the local station is “open” (or “hybrid”), the access type switching unit 222 sets the access type of the local station to “open” when the purchase price information satisfies the access restriction start condition. (Or “hybrid”) to “closed”.

  Further, when the access type switching unit 222 receives the information indicating that the access restriction is prohibited from the server apparatus 100 when the access type of the own station is “closed”, the access type switching unit 222 changes the access type of the own station from “closed”. Switch to “open” (or “hybrid”). Further, when the access type switching unit 222 receives the information indicating that the access restriction is forced from the server device 100 when the access type of the own station is “open” (or “hybrid”), the access type switching unit 222 The type is switched from “open” (or “hybrid”) to “closed”.

(1.2) Operation of Communication System According to First Embodiment FIG. 5 is an operation sequence diagram showing the operation of the communication system according to the first embodiment.

  In step S101, the public radio base station eNB transmits resource use information to the server apparatus 100. The network communication unit 110 of the server device 100 receives the resource usage information. The information collection unit 121 of the server apparatus 100 collects resource usage information from a plurality of public radio base stations eNB.

  In step S102, the information analysis unit 122 of the server apparatus 100 analyzes the resource usage information collected by the information collection unit 121.

  In step S <b> 103, the information generation unit 123 of the server device 100 generates purchase price information according to the result of analysis by the information analysis unit 122.

  In step S104, the network communication unit 110 of the server device 100 transmits purchase price information to the home radio base station HeNB. The network communication unit 240 of the home radio base station HeNB receives purchase price information.

  In step S105, the condition determination unit 221 of the home radio base station HeNB determines whether or not the purchase price information satisfies the access restriction release condition or the access restriction start condition.

  When the purchase price information satisfies the access restriction release condition or the access restriction start condition (step S106; YES), in step S107, the access type switching unit 222 of the home radio base station HeNB sets the access type to “open” (or “hybrid”). ") Or" closed ".

  In step S108, the network communication unit 240 of the home radio base station HeNB transmits a notification that the access type has been switched to the server device 100 and the mobility management device MME.

(1.3) Specific Example Next, a specific example will be described.

  Firstly, a case is assumed where the home radio base station HeNB is in a resort area. In the daytime on weekdays and the like, the radio resource consumption of the surrounding public radio base station eNB is small, and the demand for radio resources of the home radio base station HeNB is not high, so that the purchase price information from the communication carrier shows a low value. On weekday evenings and holidays, the radio resource consumption of neighboring public radio base stations eNB increases, and the demand for radio resources of the home radio base station HeNB increases, so the purchase price information from the operator shows a high value .

  Secondly, a case is assumed where the home radio base station HeNB is in a residential area. In the daytime on weekdays and the like, the radio resource consumption of the surrounding public radio base station eNB is small, and the demand for radio resources of the home radio base station HeNB is not high, so that the purchase price information from the communication carrier shows a low value. During midnight on weekdays and holidays, the radio resource consumption of neighboring public radio base stations eNB increases, and the demand for radio resources of the home radio base station HeNB increases, so the purchase price information from the operator shows a high value .

(1.4) Effects of First Embodiment As described above, according to the first embodiment, the radio resources of the home radio base station HeNB operated by a specific user are released to a third party according to the demand. be able to. For the specific user, a usage fee can be obtained from the communication carrier in return for releasing the radio resources of the home radio base station HeNB to a third party, which leads to the popularization of the home radio base station HeNB.

  In addition, the server apparatus 100 monitors the radio resource status of the public radio base station eNB, and updates the purchase price information as appropriate, so that the radio base station in the area where the demand for radio resources varies greatly depending on time and time HeNB radio resources can be released to a third party at a time when the demand is high.

  Furthermore, when the demand for radio resources of the home radio base station HeNB is low, the number of radio terminals UE accessing the home radio base station HeNB is reduced by setting the access type of the home radio base station HeNB to “closed” Therefore, interference between base stations between the home radio base station HeNB and the public radio base station eNB can be reduced.

  In the first embodiment, since the specific user operating the home radio base station HeNB can set the access restriction release condition and the access restriction start condition, the intention of the specific user can be reflected, and the convenience of the specific user can be reflected. The situation where the sex is impaired can be avoided.

(2) Second Embodiment Next, a communication system according to a second embodiment will be described. In the following second to fourth embodiments, differences from the first embodiment will be mainly described, and overlapping descriptions will be omitted.

  In 2nd Embodiment, the information generation part 123 of the server apparatus 100 produces | generates purchase price information based on the information of the event performed around the home radio base station HeNB. Specifically, there are areas where demand for wireless resources temporarily increases during New Years, fireworks, and festivals. For the home radio base station HeNB in such an area, it can be predicted that the demand for radio resources will increase, so that the purchase price information shows a high value during the New Year, fireworks, and festivals.

(2.1) Operation of Communication System According to Second Embodiment FIG. 6 is an operation sequence diagram showing the operation of the communication system according to the second embodiment.

  In steps S201 and S202, the information generation unit 123 of the server apparatus 100 refers to the event information stored in advance in the storage unit 130, and generates purchase price information.

  In step S203, the network communication unit 110 of the server apparatus 100 transmits purchase price information to the home radio base station HeNB. The network communication unit 240 of the home radio base station HeNB receives purchase price information.

  In step S204, the condition determination unit 221 of the home radio base station HeNB determines whether or not the purchase price information satisfies the access restriction release condition or the access restriction start condition.

  When the purchase price information satisfies the access restriction release condition or the access restriction start condition (step S205; YES), in step S206, the access type switching unit 222 of the home radio base station HeNB sets the access type to “open” (or “hybrid”). ") Or" closed ".

  In step S207, the network communication unit 240 of the home radio base station HeNB transmits a notification that the access type has been switched to the server device 100 and the mobility management device MME.

(2.2) Effects of the Second Embodiment As described above, according to the second embodiment, the radio resources of the home radio base station HeNB operated by the specific user are released to a third party according to the demand. be able to. For the specific user, a usage fee can be obtained from the communication carrier in return for releasing the radio resources of the home radio base station HeNB to a third party, which leads to the popularization of the home radio base station HeNB.

  Also, when demand for radio resources of the home radio base station HeNB is low, the number of radio terminals UE accessing the home radio base station HeNB is reduced by setting the access type of the home radio base station HeNB to “closed” Therefore, interference between base stations between the home radio base station HeNB and the public radio base station eNB can be reduced.

  Furthermore, since the specific user operating the home radio base station HeNB can set the access restriction release condition and the access restriction start condition, the will of the specific user can be reflected, and the convenience of the specific user is impaired. Can be avoided.

(3) Third Embodiment Next, a communication system according to a third embodiment will be described. In the second embodiment, the public radio base station eNB in the vicinity of the home radio base station HeNB sends the resource use information as information on the high demand via the mobility management device MME (that is, via the S1 interface). It transmits to the base station HeNB. In the third embodiment, the public radio base station eNB constitutes a network device.

  If monitoring of many public radio base stations eNB and control of many home radio base stations HeNB are concentrated on the server device side, it is considered that the load on the server device increases. Therefore, in this embodiment, load distribution is achieved between base stations, and the server apparatus described in the first embodiment and the second embodiment is unnecessary.

(3.1) Operation of Communication System According to Third Embodiment FIG. 7 is an operation sequence diagram showing the operation of the communication system according to the third embodiment.

  In step S301, the public radio base station eNB transmits resource usage information to the mobility management apparatus MME. The mobility management device MME receives the resource usage information.

  In step S302, the mobility management apparatus MME transmits the resource usage information received from the public radio base station eNB to the home radio base station HeNB. The home radio base station HeNB receives the resource usage information.

  In step S303, the condition determination unit 221 of the home radio base station HeNB determines that the network communication unit 240 determines that the own station has restricted access (that is, the access type of the own station is “closed”). It is determined whether the received resource usage information satisfies the access restriction release condition set by the specific user. The condition determination unit 221 receives the network communication unit 240 when the own station does not restrict access (that is, when the access type of the own station is “open” (or “hybrid”)). It is determined whether the resource usage information satisfies an access restriction start condition set by a specific user. The access restriction release condition and the access restriction start condition can be set to the same threshold, for example. In this case, for example, the condition determination unit 221 determines that the access restriction release condition is satisfied when the resource usage (or usage rate) corresponding to the resource usage information exceeds the threshold, and responds to the resource usage information. It is determined that the access restriction start condition is satisfied when the resource usage (or usage rate) to be performed falls below the threshold.

  When the resource usage information satisfies the access restriction release condition or the access restriction start condition (step S304; YES), in step S305, the access type switching unit 222 of the home radio base station HeNB sets the access type to “open” (or “hybrid”). ") Or" closed ".

  In step S306, the network communication unit 240 of the home radio base station HeNB transmits a notification that the access type has been switched to the mobility management device MME.

(3.2) Effects of Third Embodiment As described above, according to the third embodiment, the radio resources of the home radio base station HeNB operated by a specific user are released to a third party according to the demand. be able to. For the specific user, a usage fee can be obtained from the communication carrier in return for releasing the radio resources of the home radio base station HeNB to a third party, which leads to the popularization of the home radio base station HeNB.

  Also, when demand for radio resources of the home radio base station HeNB is low, the number of radio terminals UE accessing the home radio base station HeNB is reduced by setting the access type of the home radio base station HeNB to “closed” Therefore, interference between base stations between the home radio base station HeNB and the public radio base station eNB can be reduced.

  Furthermore, since the specific user operating the home radio base station HeNB can set the access restriction release condition and the access restriction start condition, the will of the specific user can be reflected, and the convenience of the specific user is impaired. Can be avoided. Further, according to the third embodiment, a situation in which the load is concentrated on the server device can be avoided by distributing the load among the base stations.

(4) Fourth Embodiment Next, a communication system according to a fourth embodiment will be described. In each of the embodiments described above, the home radio base station HeNB has been described as being unable to use the X2 interface. However, in the future, it is assumed that the home radio base station HeNB can use the X2 interface. . Therefore, in the fourth embodiment, the resource usage information transmitted via the mobility management device MME in the third embodiment is directly transmitted from the public radio base station eNB to the home radio base station HeNB.

(4.1) Operation of Communication System According to Fourth Embodiment FIG. 8 is an operation sequence diagram showing the operation of the communication system according to the fourth embodiment.

  In step S401, the public radio base station eNB transmits resource usage information to the home radio base station HeNB. The home radio base station HeNB receives the resource usage information.

  In step S402, the condition determination unit 221 of the home radio base station HeNB determines that the network communication unit 240 determines that the own station has restricted access (that is, the access type of the own station is “closed”). It is determined whether the received resource usage information satisfies the access restriction release condition set by the specific user. The condition determination unit 221 receives the network communication unit 240 when the own station does not restrict access (that is, when the access type of the own station is “open” (or “hybrid”)). It is determined whether the resource usage information satisfies an access restriction start condition set by a specific user. The access restriction release condition and the access restriction start condition can be set to the same threshold, for example. In this case, for example, the condition determination unit 221 determines that the access restriction release condition is satisfied when the resource usage (or usage rate) corresponding to the resource usage information exceeds the threshold, and responds to the resource usage information. It is determined that the access restriction start condition is satisfied when the resource usage (or usage rate) to be performed falls below the threshold.

  When the resource usage information satisfies the access restriction release condition or the access restriction start condition (step S403; YES), in step S404, the access type switching unit 222 of the home radio base station HeNB sets the access type to “open” (or “hybrid”). ") Or" closed ".

  In step S405, the network communication unit 240 of the home radio base station HeNB transmits a notification that the access type has been switched to the mobility management apparatus MME.

(4.2) Effects of the Fourth Embodiment According to the fourth embodiment, the following effects are obtained in addition to the effects obtained by the third embodiment. Specifically, the load of the mobility management device MME and the traffic amount of the S1 interface can be reduced as compared with the third embodiment.

(5) Other Embodiments As described above, the present invention has been described according to each embodiment. However, it should not be understood that the description and drawings constituting a part of this disclosure limit the present invention. From this disclosure, various alternative embodiments, examples and operational techniques will be apparent to those skilled in the art.

  The embodiments described above are not limited to being implemented independently and may be implemented in combination with each other. As an example, FIG. 9 is an operation sequence diagram illustrating the operation of the communication system when the second embodiment and the fourth embodiment are combined. In the operation sequence shown in FIG. 9, both resource usage information and purchase price information correspond to information related to high demand, and both the public radio base station eNB and the server device 100 correspond to network devices.

  Furthermore, instead of the home radio base station HeNB according to each embodiment described above, a pico cell base station (also called a hot zone node) that forms a pico cell that is a cell larger than a femto cell and smaller than a macro cell. ) May be used. Since the picocell base station can use the X2 interface, it is suitable for the fourth embodiment described above.

  In addition to the access type switching method according to each of the embodiments described above, if the home radio base station HeNB can grasp the schedule or current status of a specific user operating the home radio base station HeNB, the schedule of the specific user Or you may consider the present condition. For example, the access type of the home radio base station HeNB may be set to “open” when the owner is sleeping or going out at midnight on weekdays or on holidays.

  In LTE Advanced, it is planned to adopt a relay node that is a radio base station that configures the backhaul by radio, and an X2 interface is also planned to be adopted for the relay node. Such a radio base station may be used.

  Furthermore, although the LTE system has been described in the above-described embodiment, the present invention may be applied to other communication systems such as a communication system based on mobile WiMAX (IEEE 802.16e).

  Thus, it should be understood that the present invention includes various embodiments and the like not described herein. Therefore, the present invention is limited only by the invention specifying matters in the scope of claims reasonable from this disclosure.

  HeNB ... Home radio base station, MME ... Mobility management device, UE ... Radio terminal, eNB ... Public radio base station, 50 ... Core network, 100 ... Server device, 110 ... Network communication unit, 120 ... Control unit, 121 ... Information collection 122: Information analysis unit, 123 ... Information generation unit, 130 ... Storage unit, 201 ... Antenna unit, 210 ... Wireless communication unit, 220 ... Control unit, 221 ... Condition determination unit, 222 ... Access type switching unit, 230 ... Storage unit, 240 ... network communication unit

Claims (3)

A radio base station operated by a specific user;
A network device that transmits information related to high demand for radio resources of the radio base station to the radio base station;
The radio base station is
A receiving unit for receiving information on the height of the demand;
Based on the information on the height of demand received by the receiving unit, the switching of whether or not to perform access restriction that restricts the wireless terminal that permits access to the local station to only the wireless terminal of the specific user is controlled. A control unit,
The information related to the high level of demand is a communication system showing a price paid to the specific user according to the high level of demand. A radio base station operated by a specific user,
A receiving unit for receiving information on the high demand for the radio resources of the own station;
Based on the information on the height of demand received by the receiving unit, the switching of whether or not to perform access restriction that restricts the wireless terminal that permits access to the local station to only the wireless terminal of the specific user is controlled. A control unit,
The information on the high level of demand is a radio base station that indicates a price paid to the specific user according to the high level of demand. A step in which the network device transmits information related to a high demand for radio resources of a radio base station operated by a specific user to the radio base station;
The wireless base station receiving information on the high demand;
Whether the wireless base station performs access restriction that restricts a wireless terminal that permits access to the local station to only the wireless terminal of the specific user based on the information on the high demand received in the receiving step Controlling switching of whether or not,
The information on the high level of demand is a communication control method indicating a price paid to the specific user according to the high level of demand.

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