WO2013160979A1 - Dispositif de gestion, station de base, procédé pour commander l'utilisation d'une fréquence partagée et support lisible par ordinateur - Google Patents

Dispositif de gestion, station de base, procédé pour commander l'utilisation d'une fréquence partagée et support lisible par ordinateur Download PDF

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Publication number
WO2013160979A1
WO2013160979A1 PCT/JP2012/008048 JP2012008048W WO2013160979A1 WO 2013160979 A1 WO2013160979 A1 WO 2013160979A1 JP 2012008048 W JP2012008048 W JP 2012008048W WO 2013160979 A1 WO2013160979 A1 WO 2013160979A1
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Prior art keywords
base station
frequency
setting information
load information
communication system
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PCT/JP2012/008048
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English (en)
Japanese (ja)
Inventor
洋明 網中
義一 鹿倉
弘人 菅原
一志 村岡
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日本電気株式会社
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Publication of WO2013160979A1 publication Critical patent/WO2013160979A1/fr

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    • 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
    • H04W16/14—Spectrum sharing arrangements between different networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/04—Interfaces between hierarchically different network devices
    • H04W92/12—Interfaces between hierarchically different network devices between access points and access point controllers

Definitions

  • the present invention relates to use control of a shared frequency by a wireless communication system.
  • Cognitive radio that recognizes the surrounding wireless environment and optimizes communication parameters according to the wireless environment is known.
  • a case where a plurality of radio systems share a frequency band can be cited.
  • a frequency band that can be preferentially used by a certain wireless system referred to as a primary system
  • a secondary system a frequency band that can be preferentially used by another wireless system
  • IEEE 802.22 uses a regional wireless network (WRAN) as a secondary system that secondary uses the frequency band (TV channel) licensed to the TV broadcasting system as the primary system. Standardization is being discussed.
  • WRAN regional wireless network
  • the secondary system secondary uses the frequency band licensed to the primary system, the secondary system must not affect the service provided by the primary system. Therefore, in order to avoid interference with the primary system, the secondary system uses a frequency band that is not used temporally or spatially by the primary system, or the interference given to the primary system falls below an allowable level.
  • the transmission power is adjusted (see, for example, Patent Document 1).
  • WS TV white space
  • GDB Geo-location Database
  • frequency sensing As a cognitive radio technology for identifying an unused frequency band, Geo-location Database (GDB), frequency sensing, and beacon (or Cognitive Pilot Pipe Channel (CPC)) are known. Two or more of these, for example, GDB and frequency sensing, or GDB and beacon may be used in combination.
  • GDB provides information on the usage status of the shared frequency band (e.g. TV band) according to the geographical location, or the secondary available (that is, unused) frequency band (e.g. TVWS).
  • FIG. 1 is a sequence diagram described in Non-Patent Document 1 and shows a procedure for assigning TVWS to a cellular system.
  • carrier aggregation carrier aggregation (carrier aggregation (CA)) that is standardized as a part of Long Term Evolution (LTE) Release 10 is used in Third Generation Partnership Project (3GGP).
  • CA carrier aggregation
  • LTE Long Term Evolution
  • 3GGP Third Generation Partnership Project
  • the cellular system uses the TV band spectrum as one of a plurality of component carriers (component carrier (CC)).
  • component carrier component carrier
  • the frequency band (i.e. license band) licensed to the cellular system is used as a primary carrier (or primary cell)
  • the TV band spectrum is used as a secondary carrier (or secondary cell).
  • Step 1 The base station sends a TVWS Allocation Request to the Central Control Point (CCP) to request TVWS resource allocation.
  • the TVWS Allocation Request includes location information of the base station and may include a TVWS sensing result.
  • the CCP can connect to the GDB, and obtains information on TV band usage or usable TVWS from the GDB.
  • the CCP can also be called a frequency management entity, an operation management device, an operation management system, an operation administration and maintenance (OAM) system, a spectrum manager (SM), a frequency management device, or a frequency management system.
  • Step 2 The CCP queries GDB whether there is a TVWS frequency band available at the location of the base station.
  • Step 3 The CCP determines the TVWS frequency allocation to the base station based on the information acquired from GDB and the surrounding radio usage status known by itself. CCP performs interference management between adjacent cells in the same cellular system, for example.
  • Step 4 If there is a TVWS frequency available at the base station location, the CCP sends a TVWS Allocation Response to the base station.
  • TVWS Allocation Response includes information on TVWS assigned to the base station. Other setting information (eg, multiple candidate frequency information, transmission power limited by regulation) may be transmitted to the base station in the same manner. Otherwise, the CCP notifies the base station that there is no TVWS frequency available at the base station location.
  • Step 5 The base station determines a TV band spectrum to be used as a component carrier for performing carrier aggregation based on the TVWS notification from the CCP. Then, the base station sets itself to perform CA.
  • Step 6 The base station sends a BS Configuration Update message including the updated configuration information to the CCP.
  • the CCP returns a BS Configuration Update ACK message to the base station.
  • Step 7 The base station notifies the status of carrier aggregation to the mobile station (User Equipment (UE)) using, for example, system information in a license band. For a UE in connected mode, the base station may redirect the UE to the added TV band in order to offload license band traffic.
  • UE User Equipment
  • Non-Patent Document 1 discloses a procedure for stopping the use of TVWS by a base station in response to a request from GDB.
  • Patent Document 1 discloses that transmission powers of a plurality of base stations included in a secondary system are determined so that an interference level with a primary system is lower than an allowable level.
  • the technique disclosed in Patent Document 1 simply distributes transmission power to a plurality of base stations according to the number of base stations and propagation loss. That is, the method of Patent Document 1 does not consider the use state of the shared frequency by each base station. For this reason, there is a possibility that the technique disclosed in Patent Document 1 cannot efficiently use the shared frequency.
  • one of the objects of the present invention is to provide a management apparatus, a base station, a shared frequency usage control method, and a program for enabling a frequency management entity to grasp the usage state of the shared frequency by the base station. It is.
  • the management device includes a control unit that controls use of the first frequency by the wireless communication system including the first and second base stations.
  • the first frequency is shared by a plurality of wireless systems including the wireless communication system.
  • the control unit operates to receive load information related to a usage state of the first frequency by the first base station, and sets setting information related to allocation of the first frequency to the first and Operate to transmit to at least one of the second base stations.
  • a base station used in a wireless communication system includes a processing unit that operates to transmit load information related to a usage state of a first frequency by the base station to a management entity.
  • the first frequency is shared by a plurality of wireless systems including the wireless communication system.
  • the management entity manages use of the first frequency by the wireless communication system.
  • a frequency usage control method includes the following (a) and (b). (A) receiving load information related to a usage state of a first base station of a first frequency shared by a plurality of wireless systems including a wireless communication system; and (b) assigning the first frequency. Transmitting the setting information on at least one of the first base station and the second base station.
  • a method implemented in a base station used in a wireless communication system includes transmitting load information related to a usage state of a first frequency by the base station to a management entity.
  • the first frequency is shared by a plurality of wireless systems including the wireless communication system.
  • the management entity manages use of the first frequency by the wireless communication system.
  • FIG. 2 shows a configuration example of the network according to the present embodiment.
  • the network of FIG. 2 includes a wireless communication system 100 and a frequency management entity 3.
  • the wireless communication system 100 may be a cellular system (eg LTE system, Universal Mobile Telecommunications System (UMTS), CDMA2000 system (EV-DO, 1xRTT, HPRD), or Global System for Mobile Communications (GSM) system).
  • the wireless communication system 100 may be a non-cellular system (eg WiMAX system, wireless Local Area Network (LAN) system).
  • the wireless communication system 100 includes a base station 1 and a mobile station 2.
  • the base station 1 is called, for example, a base station, a relay station (Relay Node (RN)), or an access point.
  • the mobile station 2 is called, for example, a mobile station, UsermentEquipment (UE), or Wireless Transmit / ReceiveRUUnit (WTRU).
  • the cell 11 means a coverage area of the base station 1.
  • the cell 11 may be a sector cell.
  • the example of FIG. 2 includes two base stations 1A and 1B.
  • the base station 1A operates the cell 11A and communicates with the mobile station 2A belonging to the cell 11A.
  • the base station 1B operates the cell 11B and communicates with the mobile station 2B belonging to the cell 11B.
  • the radio communication system 100 may include at least one base station 1. That is, the wireless communication system 100 may include only one base station 1 or may include three or more base stations 1.
  • the frequency management entity 3 manages use of a shared frequency by at least one base station 1 included in the wireless communication system 100.
  • the shared frequency is shared by a plurality of wireless systems including the wireless communication system 100 and is used in the base station 1 in addition to the frequency licensed for the wireless communication system 100.
  • the frequency management entity 3 may manage a plurality of radio communication systems including the radio communication system 100.
  • the plurality of wireless communication systems may be a system managed by one operator.
  • the plurality of wireless communication systems may include systems operated by different operators.
  • the frequency management entity 3 can also be referred to as an operation management device, an operation management system, an Operation Administration and Maintenance (OAM) system, a Spectrum Manager (SM), a frequency management device, or a frequency management system.
  • the frequency management entity 3 may be Central Control Point (CCP) described in the background art.
  • the shared frequency may be a frequency band licensed to the primary system, such as TVWS.
  • the radio communication system 100 as the secondary system can secondary use the shared frequency when the shared frequency is not used temporally or spatially by the primary system, for example.
  • the radio communication system 100 can not only use the frequency licensed for the radio communication system 100 but also secondary use the shared frequency (e.g. TVTV) that is not licensed for the radio communication system 100.
  • the primary system may not exist.
  • the shared frequency may be shared equally by a plurality of wireless communication systems, for example, a plurality of wireless communication systems operated by different operators.
  • the plurality of radio communication systems may include only systems using the same radio access technology (e.g. LTE) or may include systems using different radio access technologies (e.g. LTE, CDMA2000, GSM, WiMAX).
  • the frequency management entity 3 has a control unit 30.
  • the control unit 30 controls use of the shared frequency by the plurality of base stations 1 included in the wireless communication system 100.
  • the shared frequency use control performed by the control unit 30 includes, for example, at least one of the following (a) to (e).
  • D stopping the use of the shared frequency by the base station 1; and (e) releasing the allocation of the radio resource of the shared frequency to the base station 1.
  • the base station 1 (eg 1A and 1B) according to the present embodiment includes a processing unit 10.
  • the processing unit 10 operates to transmit load information (hereinafter, white space (WS) load information) related to the usage state of the shared frequency by the base station 1 to the frequency management entity 3.
  • the WS load information is directly or how much the base station 1 is using the radio resource (eg, at least one of the frequency resource and the transmission power resource) of the shared frequency allocated from the frequency management entity 3 to the base station 1.
  • Information that is shown indirectly may be included.
  • Specific examples of the load information include, for example, at least one of the following (a) to (h).
  • A Usage or usage rate of allocated frequency resource
  • B Usage or usage rate of the allocated transmission power resource
  • C Resource block usage or usage rate in the allocated shared frequency
  • D the number of mobile stations 2 using a shared frequency
  • E Number of mobile stations 2 belonging to the cell 11 operated using the shared frequency
  • F Total traffic volume of mobile station 2 belonging to cell 11 operated using a shared frequency
  • Notification indicating that at least one of (a) to (f) described above exceeds a predetermined threshold
  • H Notification indicating that at least one of (a) to (f) described above is below a predetermined threshold.
  • FIG. 3 is a sequence diagram showing a procedure for transmitting WS load information by the base station 1 according to the present embodiment.
  • the base station 1 transmits WS load information to the frequency management entity 3.
  • Conditions for triggering transmission of WS load information are not particularly limited. That is, the base station 1 may transmit the WS load information periodically or aperiodically.
  • the aperiodic transmission may be performed in response to an aperiodic transmission request from the frequency management entity 3. Further, the aperiodic transmission may be performed spontaneously by the base station 1 in response to satisfying a predetermined transmission condition.
  • the base station 1 transmits WS load information indicating the use state of the shared frequency by itself to the frequency management entity 3. Therefore, the frequency management entity 3 can control the use of the shared frequency by the radio communication system 100 in consideration of the use state of the shared frequency by the base station 1 to which the shared frequency has been assigned. Based on the WS load information received from the base station 1, the frequency management entity 3 may control the use of the shared frequency by the base station 1 that has transmitted the information. Further, the frequency management entity 3 may control the use of the shared frequency by another base station 1 different from the transmission source of the WS load information.
  • the frequency management entity 3 sufficiently uses the radio resource (eg frequency resource or transmission output resource) allocated to the base station 1 that is the transmission source of the information. I can understand that I have not done it. For example, the frequency management entity 3 can collect surplus resources from the base station 1 and assign them to other base stations 1.
  • the radio resource eg frequency resource or transmission output resource
  • the base station 1 transmits not only the WS load information but also load information indicating the usage status of the frequency licensed as the exclusive frequency of the radio communication system 100 (ie, license band) by the base station 1 to the frequency management entity 3. May be.
  • the frequency management entity 3 can control the use of the shared frequency by the radio communication system 100 in consideration of the shared frequency (i.e. WS) by the base station 1 and the usage state of the license band.
  • the frequency management entity 3 has a usage rate of the radio resource of the shared frequency allocated to the base station 1 being a predetermined value or less and a usage rate of the radio resource of the license band by the base station 1 is also a predetermined value or less.
  • the shared frequency allocation setting may be updated so as to collect surplus shared frequency radio resources from the base station 1.
  • the network configuration example in FIG. 4 includes a TV broadcast system 200.
  • the TV broadcast system 200 is a specific example of another wireless system that uses a shared frequency.
  • the Geo-location Database (GDB) 4 manages the usage status of the frequency band (i.e. TV band) licensed to the TV broadcasting system 200 and provides information on the secondary usable frequency band (e.g. TVWS).
  • GDB Geo-location Database
  • the frequency management entity 3 communicates with the GDB 4 and receives shared frequency information from the GDB 4.
  • the shared frequency information indicates a usable shared frequency (i.e. at least one candidate frequency).
  • the frequency management entity 3 may receive the shared frequency information via another system.
  • the frequency management entity 3 is an OAM system that manages the radio communication system 100
  • the frequency management entity 3 as the OAM system may receive the shared frequency information via the Spectrum-Manager (SM).
  • SM Spectrum-Manager
  • ⁇ Second Embodiment> one specific example of aperiodic transmission of WS load information by the base station 1 described in the first embodiment will be described.
  • a configuration example of a network including the wireless communication system 100 according to the present embodiment is as illustrated in FIG. 2 or FIG.
  • the base station 1 according to the present embodiment spontaneously transmits WS load information in response to the establishment of a predetermined condition.
  • the base station 1 may transmit the WS load information in response to the use state of the shared frequency allocated from the frequency management entity 3 being lower than a threshold value.
  • the transmitted WS load information indicates that the use state of the shared frequency by the base station 1 is low.
  • the use state of the shared frequency may be represented by the use state of the assigned radio resource (e.g., at least one of the frequency resource, the transmission power resource, and the resource block).
  • the base station 1 may transmit the WS load information in response to the resource block usage rate in the allocated shared frequency being lower than a threshold value. Further, the base station 1 may transmit the WS load information in response to the resource block usage rate in the allocated shared frequency being lower than the threshold value.
  • the use state of the shared frequency may be represented by the number of mobile stations 2 belonging to the cell 11 operated using the shared frequency or the traffic volume.
  • the base station 1 may transmit the WS load information in response to the number of mobile stations 2 using the shared frequency in its cell 11 being lower than a threshold value.
  • FIG. 5 is a sequence diagram showing a procedure for transmitting WS load information by the base station 1 according to the present embodiment.
  • the base station 1 determines whether to report the usage state of the shared frequency.
  • the base station 1 may determine whether or not the predetermined condition described above is satisfied. If it is determined that reporting is necessary, the base station 1 transmits WS load information (step S101).
  • FIG. 6 is a flowchart showing a specific example of the transmission operation of the WS load information by the base station 1.
  • the base station 1 displays the WS load information. Transmit (step S12).
  • the base station 1 voluntarily reports the usage state of the shared frequency (that is, transmission of WS load information). Thereby, the base station 1 can voluntarily notify, for example, that the allocated shared frequency is not sufficiently used or the usage rate is remarkably high. Therefore, the frequency management entity 3 uses the reception of WS load information from the base station 1 as a trigger to review the shared frequency assignment of the transmission source base station 1 or another base station 1, thereby sharing the frequency by the wireless communication system 100. The use of frequency can be made efficient.
  • the base station 1 suppresses transmission of WS usage load information, for example, when the shared frequency is used appropriately or when the usage state of the shared frequency has not changed since the previous report. Can do. Thereby, useless signaling can be suppressed.
  • FIG. 7 is a sequence diagram showing a procedure for transmitting WS load information by the base station 1 according to the present embodiment.
  • the base station 1 according to the present embodiment transmits WS load information (step S101).
  • the frequency management entity 3 may periodically transmit a report request.
  • the base station 1 also periodically transmits WS load information.
  • the frequency management entity 3 may transmit the report request aperiodically.
  • the base station 1 also transmits WS load information aperiodically.
  • the frequency management entity 3 may transmit a report request when it is necessary to review the allocation of the shared frequency to the plurality of base stations 1. Thereby, the frequency management entity 3 can grasp the latest use state by the base station 1 and can review the allocation of the shared frequency based on the latest use state by the base station 1.
  • the frequency management entity 3 when the frequency management entity 3 has not yet been assigned to any base station, that is, when the radio resources (eg frequency resource, transmission power resource) of the shared frequency that can be assigned have decreased, the frequency management entity 3 A report may be requested from at least one base station 1.
  • the frequency management entity 3 may transmit a WS load information report request in response to the radio frequency of the assignable shared frequency being equal to or less than a threshold value.
  • the frequency management entity 3 responds to another base station 1 to which a shared frequency has already been allocated in response to receiving a shared frequency allocation request (hereinafter, WS allocation request) from any of the base stations 1.
  • WS allocation request a shared frequency allocation request
  • the frequency management entity 3 may transmit a report request when both of the two conditions described above are satisfied.
  • the frequency management entity 3 has received a shared frequency allocation request (hereinafter referred to as a WS allocation request) from any of the base stations 1, but is sufficient for radio resources of the allocated shared frequency to respond to the WS allocation request. If not, a report request may be transmitted to another base station 1 to which a shared frequency has already been assigned.
  • ⁇ Fourth Embodiment> a specific example of shared frequency use control by the frequency management entity 3 will be described. Specifically, in the present embodiment, an example will be described in which, based on the WS load information from the base station 1, the allocation of the shared frequency to the base station 1 that is the source of the WS load information is updated.
  • a configuration example of a network including the wireless communication system 100 according to the present embodiment is as illustrated in FIG. 2 or FIG.
  • FIG. 8 is a sequence diagram showing a specific example of a shared frequency use control procedure in the present embodiment.
  • the base station 1 transmits WS load information, and the frequency management entity 3 receives it.
  • the transmission of the WS load information in step S101 is performed periodically or aperiodically, and is performed in response to a report request or spontaneously.
  • step S402 based on the WS load information received from the base station 1, the frequency management entity 3 updates the radio resource allocation of the shared frequency for the base station 1 that is the source of the WS load information.
  • the frequency management entity 3 generates updated WS setting information.
  • the WS setting information includes setting information of shared frequency radio resources (e.g. frequency resources and / or transmission power resources).
  • step S402 The processing in step S402 is performed periodically or aperiodically.
  • the frequency management entity 3 may perform the process of step S ⁇ b> 402 in response to reception of WS load information from the base station 1. Further, the frequency management entity 3 may perform the process of step S402 in response to receiving the WS allocation request from any of the base stations 1. Further, when the frequency management entity 3 receives the WS allocation request from any of the base stations 1, but the radio resource of the shared frequency that can be allocated is not sufficient to respond to the WS allocation request, the frequency management entity 3 performs the process of step S402. You may do it.
  • the frequency management entity 3 may target the state where the allocated radio resource is appropriately used by the base station 1. For this purpose, the frequency management entity 3 may collect surplus resources from the base station 1. For example, the frequency management entity 3 may reduce the allocation of frequency resources or resource blocks to the base station 1 such that the usage rate of the frequency resources or resource blocks by the base station 1 is equal to or greater than a threshold value. Further, the frequency management entity 3 may determine the transmission power resource to be allocated to the base station 1 using the product of the average transmission power per mobile station 2 and the number of mobile stations 2.
  • the frequency management entity 3 may use the WS load information when the use state of the radio resource of the shared frequency by the base station 1 is good or when the radio resource of the shared frequency that can be allocated remains sufficiently. The allocation of the shared frequency to the transmission source base station 1 may not be updated.
  • step S403 the frequency management entity 3 transmits the updated WS setting information to the base station 1.
  • the frequency management entity 3 may transmit a notification indicating that the shared frequency is not updated to the base station 1.
  • the base station 1 receives WS setting information from the frequency management entity 3.
  • step S404 the base station 1 sets itself according to the received WS setting information. That is, the base station 1 sets and operates the cell 11 according to the setting information of the radio resource (e.g., the frequency resource and the transmission power resource) of the shared frequency indicated in the WS setting information.
  • the radio resource e.g., the frequency resource and the transmission power resource
  • FIG. 9 is a flowchart showing a specific example of the WS setting information transmission operation by the frequency management entity 3.
  • the frequency management entity 3 when the frequency management entity 3 satisfies the update condition of the shared frequency allocation setting (WS setting in FIG. 9) (YES in step S21), the frequency management entity 3 sends the updated WS load information to the base station 1. Transmit (step S22).
  • ⁇ Fifth Embodiment> another example of shared frequency use control by the frequency management entity 3 will be described. Specifically, in the present embodiment, an example is described in which, based on WS load information from the base station 1, a radio resource of a shared frequency is assigned to another base station 1 different from the source of the WS load information. To do. In addition, the frequency management entity 3 may update the allocation of the radio resource of the shared frequency to the base station 1 that is the transmission source of the WS load information as necessary.
  • a configuration example of a network including the wireless communication system 100 according to the present embodiment is as illustrated in FIG. 2 or FIG.
  • FIG. 10 is a sequence diagram showing a specific example of a shared frequency use control procedure in the present embodiment.
  • the frequency management entity 3 receives WS load information from the base station 1A.
  • the transmission of the WS load information in step S101 is performed periodically or aperiodically, and is performed in response to a report request or spontaneously.
  • step S502 the frequency management entity 3 performs new allocation or update of allocation of the radio resource of the shared frequency to the other base station 1B based on the WS load information received from the base station 1A.
  • WS load information from the base station 1B may also be considered.
  • the process in step S502 is performed periodically or aperiodically.
  • the frequency management entity 3 may perform the process of step S502 in response to reception of WS load information from the base station 1A or the base station 1B.
  • the frequency management entity 3 may perform the process of step S502 in response to receiving a new allocation request for the radio resource of the shared frequency from the base station 1B.
  • the frequency management entity 3 may also update the allocation of the shared frequency radio resource to the base station 1A that is the transmission source of the WS load information. For example, when the frequency management entity 3 receives the WS allocation request from the base station 1B, but the radio resource of the shared frequency that can be allocated is not sufficient to respond to the WS allocation request, the frequency management entity 3 allocates the radio resource to the base station 1A. What is necessary is just to update together. For example, the frequency management entity 3 may recover surplus resources from the base station 1A in order to reassign to the base station 1B.
  • the frequency management entity 3 generates WS setting information for the base station 1B. Moreover, the frequency management entity 3 produces
  • the WS setting information includes setting information of shared frequency radio resources (e.g. frequency resources and / or transmission power resources).
  • the frequency management entity 3 transmits WS setting information to the base station 1B.
  • the base station 1B receives the WS setting information from the frequency management entity 3.
  • the base station 1B sets itself according to the received WS setting information. That is, the base station 1B sets and operates the cell 11B in accordance with the setting information of the radio resource (at least one of the e.g. frequency resource and the transmission power resource) of the shared frequency indicated in the WS setting information.
  • steps S403 and S404 in FIG. 10 are performed in response to the update of the WS setting information for the base station 1A.
  • FIG. 11 is a flowchart showing a specific example of the operation of transmitting the WS setting information by the frequency management entity 3.
  • the frequency management entity 3 considers the usage state of the radio resource by the base station 1A to which the radio resource of the shared frequency has been allocated, and sets the radio resource of the shared frequency to the other base station 1B. Determine the assignment.
  • step S32 the frequency management entity 3 determines whether or not the radio resource allocation setting for the base station 1A needs to be updated in order to allocate the radio resource to the base station 1B.
  • the frequency management entity 3 transmits the updated WS setting information to the base station 1A (step S33). For example, if the frequency management entity 3 does not have enough shared-frequency radio resources that can be allocated to the base station 1B and there is a surplus in the usage state of the allocated radio resources by the base station 1A, the frequency management entity 3 In order to recover resources, WS setting information may be transmitted to the base station 1A.
  • step S34 the frequency management entity 3 transmits WS setting information to the base station 1B.
  • the WS setting information transmitted in step S34 may indicate the reassignment of surplus resources collected from the base station 1A.
  • the update of the radio frequency resource allocation setting (ie step S402 or S502) may be triggered by a WS allocation request from the base station 1.
  • FIG. 12 is a sequence diagram showing a specific example of the shared frequency use control procedure in the present embodiment. Note that FIG. 12 is described as a modified example of FIG. 10 already described. As is clear from a comparison between FIG. 12 and FIG. 11, FIG. 12 includes step S601. In step S601, the base station 1B transmits a WS allocation request to the frequency management entity 3. Then, the frequency management entity 3 performs the process of step 502 in response to receiving the WS allocation request from the base station 1B. In step S502, the frequency management entity 3 newly allocates the radio resource of the shared frequency to the base station 1B, and updates the radio resource allocation to the other base station 1A as necessary.
  • the frequency management entity 3 responds to the reception of a new WS allocation request from the base station 1 (base station 1B) with another base station (base station) that has already been allocated radio resources of the shared frequency.
  • a report request for WS load information is transmitted to the station 1A).
  • the frequency management entity 3 considers the WS load information of the base station 1A received as a response to the report request (that is, the use state of the radio resource of the shared frequency) and allocates the radio resource of the shared frequency to the base station 1B. I do.
  • the frequency management entity 3 may update the radio resource allocation for the base station 1A as necessary.
  • FIG. 13 is a sequence diagram showing a specific example of a shared frequency use control procedure in the present embodiment.
  • the base station 1B transmits a WS allocation request to the frequency management entity 3.
  • the frequency management entity 3 determines whether or not to acquire WS load information from the base station 1A to which the radio resource of the shared frequency has already been allocated in response to receiving the WS allocation request from the base station 1B. Determine.
  • the frequency management entity 3 may newly acquire WS load information from the base station 1A when a predetermined time has elapsed since the WS load information of the base station 1A was previously acquired.
  • the frequency management entity 3 may acquire WS load information from the base station 1 ⁇ / b> A when the radio resources of the shared frequency that can be allocated are insufficient.
  • step S702 When it is determined in step S702 that WS load information is acquired from the base station 1A, the frequency management entity 3 transmits a report request to the base station 1A (step S301) and receives WS load information from the base station 1A (step S301). Step S101).
  • the processing in steps S502, S403 to S404, and S503 to S504 in FIG. 13 is the same as the processing in the corresponding step group shown in FIG.
  • the first to seventh embodiments may be used in appropriate combination.
  • the processing performed by the base station 1 (processing unit 10) and the frequency management entity 3 (control unit 30) described in the first to seventh embodiments is performed using a semiconductor processing apparatus including Application Specific Integrated Circuit (ASIC). It may be realized. These processes may be realized by causing a computer system including at least one processor (e.g. microprocessor, MPU, Digital Signal Processor (DSP)) to execute a program. Specifically, one or a plurality of programs including an instruction group for causing the computer system to perform the algorithm related to the processing unit 10 or the control unit 30 shown in the first to sixth embodiments is created, and the program is executed. What is necessary is just to supply to a computer.
  • processor e.g. microprocessor, MPU, Digital Signal Processor (DSP)
  • Non-transitory computer readable media include various types of tangible storage media (tangible storage medium).
  • Examples of non-transitory computer-readable media include magnetic recording media (eg, flexible disks, magnetic tapes, hard disk drives), magneto-optical recording media (eg, magneto-optical disks), Compact Disc Read Only Memory (CD-ROM), CD- R, CD-R / W, and semiconductor memory (for example, mask ROM, Programmable ROM (PROM), Erasable PROM (EPROM), flash ROM, Random Access Memory (RAM)).
  • the program may also be supplied to the computer by various types of temporary 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.
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Abstract

Dans un mode de réalisation, une station de base (1) utilisée dans un système de communication sans fil (100) comporte une unité de traitement (10). Ladite unité de traitement (10) fonctionne de manière à transmettre, à une entité de gestion (3), des informations de charge relatives à l'état d'utilisation, du côté de la station de base (1) susmentionnée, d'une fréquence partagée entre plusieurs systèmes sans fil, parmi lesquels figure le système de communication sans fil (100) susmentionné. L'entité de gestion (3) gère l'utilisation de ladite fréquence partagée par le système de communication sans fil (100). Il est ainsi possible, par exemple, pour une entité de gestion de fréquence de suivre l'utilisation, par une station de base, d'une fréquence partagée entre plusieurs systèmes sans fil.
PCT/JP2012/008048 2012-04-27 2012-12-17 Dispositif de gestion, station de base, procédé pour commander l'utilisation d'une fréquence partagée et support lisible par ordinateur WO2013160979A1 (fr)

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WO2022185964A1 (fr) * 2021-03-01 2022-09-09 ソニーグループ株式会社 Dispositif de commande de communication, dispositif de réseau, système de commande de communication, procédé de commande de communication et procédé de communication d'informations

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JP2021087087A (ja) * 2019-11-27 2021-06-03 株式会社Ｋｄｄｉ総合研究所 無線リソース割当制御装置、無線リソース割当制御方法及びコンピュータプログラム
JP7165643B2 (ja) 2019-11-27 2022-11-04 株式会社Ｋｄｄｉ総合研究所 無線リソース割当制御装置、無線リソース割当制御方法及びコンピュータプログラム
WO2022185964A1 (fr) * 2021-03-01 2022-09-09 ソニーグループ株式会社 Dispositif de commande de communication, dispositif de réseau, système de commande de communication, procédé de commande de communication et procédé de communication d'informations

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