WO2015034305A1 - Appareil et procédé de commande d'accès de terminal dans un système de communication mobile - Google Patents

Appareil et procédé de commande d'accès de terminal dans un système de communication mobile Download PDF

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Publication number
WO2015034305A1
WO2015034305A1 PCT/KR2014/008361 KR2014008361W WO2015034305A1 WO 2015034305 A1 WO2015034305 A1 WO 2015034305A1 KR 2014008361 W KR2014008361 W KR 2014008361W WO 2015034305 A1 WO2015034305 A1 WO 2015034305A1
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WIPO (PCT)
Prior art keywords
cell
information
base station
overload
access
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PCT/KR2014/008361
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English (en)
Korean (ko)
Inventor
이송학
Original Assignee
삼성전자 주식회사
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Publication of WO2015034305A1 publication Critical patent/WO2015034305A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/02—Access restriction performed under specific conditions
    • H04W48/06—Access restriction performed under specific conditions based on traffic conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0284—Traffic management, e.g. flow control or congestion control detecting congestion or overload during communication
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks

Definitions

  • the present invention relates to a terminal access control apparatus and method in a mobile communication system.
  • the mobile communication system is evolving into a high speed, high quality wireless packet data communication system for providing data service and multimedia service, instead of providing a voice-oriented service in the early days.
  • Various mobile communication standards such as 802.16 were developed to support high speed, high quality wireless packet data transmission services.
  • the LTE system was developed to efficiently support high-speed wireless packet data transmission, and maximizes wireless system capacity by utilizing various wireless access technologies.
  • the LTE-A system is an advanced wireless system of the LTE system and has improved data transmission capability compared to LTE.
  • LTE generally refers to the base station and the terminal equipment corresponding to Release 8 or 9 of the 3GPP standards group
  • LTE-A refers to the base station and the terminal equipment corresponding to Release 10 of the 3GPP standards group.
  • the 3GPP standards organization has been standardizing on the subsequent release of LTE-A system based on this and having improved performance.
  • AMC adaptive modulation and coding
  • the transmitter can adjust the amount of data to be transmitted according to channel conditions. In other words, if the channel condition is bad, the amount of data to be transmitted can be reduced to a desired level, and if the channel condition is good, the amount of data to be transmitted can be increased so that a large amount of information can be effectively transmitted while the reception error probability is set to a desired level.
  • An object of the present invention is to provide a method and apparatus for efficiently managing a cell connection of a terminal in a mobile communication system.
  • An embodiment of the present invention provides a method and apparatus for allowing and limiting connection or call inflow of a terminal through sensing a load state of an adjacent cell.
  • the base station receives load information between the neighbor base station and the mobility management entity (Mobility Management Entity) from the neighbor base station, whether the overload in the neighbor cell using the received load information Determining, and if it is determined that an overload has occurred, transmitting cell access information for limiting access to an overloaded neighbor cell to the at least one terminal, wherein the load information includes at least one of the neighboring base stations;
  • a terminal access control method comprising load information on a cell.
  • the base station receives load information between the neighbor base station and the mobility management entity (Mobility Management Entity) from the neighboring base station and the transceiver for performing data communication with the neighboring base station and the terminal, and the received And determining whether an overload has occurred in a neighboring cell by using load information, and if it is determined that the overload has occurred, a load information control unit for controlling to transmit cell connection information for limiting access to the overlaid neighboring cell to at least one terminal.
  • the load information provides a base station including load information on at least one cell included in the neighboring base station.
  • the cell access method of the terminal includes the step of receiving cell connection information for limiting the connection to the cell overloading from the base station and controlling the cell connection in response to the received cell access information And the cell access information receives load information between the neighbor base station and the mobility management entity from the neighbor base station from the neighbor base station and determines that an overload has occurred in response to the received load information.
  • a terminal including an overload state identifier for a cell in an overloaded state among at least one cell included in the neighboring base station.
  • the terminal receives the cell connection information for limiting the connection to the cell overloading from the base station and the transceiver for performing data communication with the base station, and performs cell connection in response to the received cell access information
  • a connection management control unit for controlling to limit the cell connection information, wherein the cell connection information receives load information between the neighbor base station and the mobility management entity from the neighbor base station and corresponds to the received load information. If it is determined that an overload has occurred, a terminal including an overload state identifier is generated for a cell in an overload state among at least one cell included in the neighboring base station.
  • a method and apparatus for efficiently managing cell connection of a terminal in a mobile communication system can be provided.
  • a method and apparatus for efficiently controlling cell connection management in a terminal can be provided.
  • FIG. 1 is a diagram illustrating a mobile communication system according to an embodiment of the present invention.
  • FIG. 2 is a diagram illustrating a signal flow between base stations through an X2 interface.
  • FIG. 3 is a relation diagram illustrating a signal flow for terminal access control according to a dedicated signaling method according to an embodiment of the present invention.
  • FIG. 4 is a relation diagram illustrating a signal flow for terminal access control according to a broadcast signaling method according to an embodiment of the present invention.
  • FIG. 5 is a flowchart illustrating a terminal access control method of a base station according to an embodiment of the present invention.
  • FIG. 6 is a flowchart illustrating neighbor cell overload determination and cell access information management of a base station according to an embodiment of the present invention.
  • FIG. 7 is a diagram illustrating a configuration of neighbor cell parameters used for overload determination, which is an embodiment of the present invention.
  • FIG. 8 is a diagram illustrating a configuration of a base station system parameter used for overload determination, which is an embodiment of the present invention.
  • FIG. 9 is a diagram illustrating S1 TNL Load Action information according to an embodiment of the present invention.
  • FIG. 10 is a flowchart illustrating a cell access control method of a terminal according to an embodiment of the present invention.
  • FIG. 11 is a diagram illustrating a base station according to an embodiment of the present invention.
  • FIG. 12 is a view for explaining a terminal which is an embodiment of the present invention.
  • FIG. 1 is a diagram illustrating a mobile communication system according to an embodiment of the present invention.
  • the mobile communication system of the present invention may include a mobility management entity 110 (MME: Mobility Management Entity), a neighbor base station 130 (neighbor evolved Node B), and a base station 150 (evolved Node B).
  • MME Mobility Management Entity
  • neighbor base station 130 neighbor evolved Node B
  • base station 150 evolved Node B
  • the base stations (eNB) 130 and 150 may correspond to existing Node Bs of a next generation mobile telecommunication system (UMTS) system.
  • a base station (eNB) is connected to a user equipment (UE) by a radio channel and may perform a more complicated role than a conventional node B.
  • UE user equipment
  • LTE Long Term Evolution
  • VoIP Voice over IP
  • An apparatus for collecting and scheduling is required, and the base station 130 or 150 is in charge of this.
  • One base station (ENB) can typically control multiple cells.
  • LTE uses Orthogonal Frequency Division Multiplexing (OFDM) as a radio access technology in a bandwidth of up to 20 MHz.
  • OFDM Orthogonal Frequency Division Multiplexing
  • AMC adaptive modulation & coding
  • S-GW is a device that provides a data bearer, and creates or removes a data bearer under the control of a mobility management entity (MME).
  • MME mobility management entity
  • the S1 interface load information may be an S1 TNL Load Indicator (S1 Transport Network Layer Load Indicator).
  • S1 interface load information may be monitored or measured by the base station as information on the load between the base station and the mobility management entity.
  • the load information may be expressed as low, medium, high or overload according to the load level between the S1 interface and the mobility management object.
  • the expression method is an embodiment of expressing a load level, and the expression method is not necessarily limited thereto.
  • the neighbor base station 130 may transmit the S1 interface load information to the base station 150.
  • the base station 150 receiving the S1 interface load information may determine whether an overload occurs in an adjacent cell by using the received S1 interface load information.
  • the S1 interface load information may include load information of at least one cell included in the neighboring base station. If it is determined that an overload occurs in the neighbor cell, cell access information for limiting access to the overload neighbor cell may be transmitted.
  • FIG. 2 is a diagram illustrating a signal flow between base stations through an X2 interface.
  • step S210 the base station 210 transmits a resource status request message to the neighbor base station 220 and requests the report of the resource status information of the neighbor base station 220.
  • the resource status report request may include load information between the neighbor base station 220 and the mobility management entity.
  • the neighboring base station 220 transmits a resource status request message to the base station 210, two neighboring report characteristics in the resource status request message content are requested to request the neighbor cell S1 TNL Load information.
  • Bit (TNL load Ind Periodic) may be set to '1'.
  • step S220 when the neighboring base station 220 accepts the resource status request from the base station 210, the neighboring base station 220 corresponds to the resource status request (RESOURCE STATUS REQUEST) message, the resource status response (RESOURCE STATUS) RESPONSE) message, it can transmit a response to accept the request of the base station 210.
  • the resource status request REQUEST
  • the resource status response REESPONSE
  • the adjacent base station 220 may transmit a resource status update (RESOURCE STATUS UPDATE) message to the base station 210 according to a preset period or aperiodically.
  • the transmission may be performed by using a RESTAT STATUS UPDATE message until the S1 interface load information report request is released to the base station.
  • the reporting cell may use an indicator of low, medium, high, or overload according to its S1 interface load state.
  • the base station 210 may determine the load state of an adjacent cell by using the S1 interface load information received through the resource status update message, and transmit cell access information to the terminal according to the determination result. .
  • an embodiment of the present invention provides a UE or UE to a neighboring cell of an adjacent BS that is overloaded by using S1 interface load information (S1 TNL Load Indicator) of neighboring cells collected through a RESOURCE STATUS UPDATE message.
  • S1 interface load information S1 TNL Load Indicator
  • FIG. 3 is a diagram illustrating a signal flow for terminal access control according to a dedicated signaling method according to an embodiment of the present invention
  • FIG. 4 is a signal flow for terminal access control according to a broadcast signaling method according to an embodiment of the present invention. This is a relationship diagram illustrating.
  • a black cell list may be used as an example of managing cell access information.
  • the cell that is overloaded may be designated as a black cell list and inform the terminal. Through this, it is possible to block the access or call inflow of the terminals until the overloaded cell returns to the normal state.
  • a black cell list is provided as an overload state management method, this is merely an example and is not necessarily limited thereto.
  • the black cell list is a function of limiting a measurement or reporting operation to a specific cell (s). That is, for cells designated as a black cell list, an operation of increasing a cell load such as cell selection, reselection, or handover is limited.
  • the black cell list may be transmitted to the terminal in two ways, for example.
  • Dedicated signaling is a method of transmitting a black cell list only to an active terminal using an RRC Configuration Reconfiguration message.
  • the broadcast method is a method of transmitting to all idle terminals in a cell using a system information message.
  • the third base station is a base station that overloads S1 interface load information, and a method of transmitting cell information using dedicated signaling by a first base station is described, and a cell is transmitted by using a broadcast signaling by a second base station. It explains by the method of transmitting information.
  • the first base station 310 may receive S1 interface load information from the third base station 330.
  • the first base station 310 and the third base station 330 may receive the S1 interface load information through the X2 interface.
  • the S1 interface load information may include an S1 TNL Load Indicator.
  • the first base station 310 may receive S1 interface load information by using a resource status request message and a resource status update message. The detailed description is omitted since it has been described with reference to FIG. 2.
  • the second base station 320 may receive S1 interface load information from the third base station 330.
  • the first base station 310 may determine the load state of the neighbor cell by using the received S1 interface load information.
  • the cell connection information may be generated according to the determination result.
  • the cell access information may be a black cell list.
  • the second base station 320 may determine the load state of the adjacent cell by using the received S1 interface load information and generate cell access information.
  • Step S320 describes the case where the terminal 340 makes an Attach Request.
  • the terminal 340 may transmit an Attach Request message to the first base station.
  • the first base station 310 may transmit an RRC Connection Reconfiguration message in response to the Attach Request message.
  • the RRC Connection Reconfiguration message may include cell connection information (black cell list information) generated in step S311.
  • the terminal 340 may transmit an RRC Connection Reconfiguration complete message, and complete the Attach Request process.
  • the terminal 340 may manage cell access using the cell access information (black cell list information).
  • the terminal 340 may check a corresponding cell in an overloaded state through a black cell list, and through this, may restrict and manage access or call inflow to a cell in which an overload has occurred.
  • Step S330 describes the case in which the terminal 340 makes a Service Request.
  • the terminal 340 may transmit a Service Request message to the second base station.
  • the second base station 320 may transmit an RRC Connection Reconfiguration message in response to the Service Request message.
  • the RRC Connection Reconfiguration message may include cell connection information (black cell list information) generated in step S313.
  • the terminal 340 may transmit an RRC Connection Reconfiguration complete message and complete a service request process.
  • the terminal 340 may manage cell access using the cell access information (black cell list information).
  • the terminal 340 may check a corresponding cell in an overloaded state through a black cell list, and through this, may restrict and manage access or call inflow to a cell in which an overload has occurred.
  • the active terminal may receive black cell list information through an RRC Connection Reconfiguration message. Since the UE does not perform the measurement or the report on the cells included in the black cell list, the handover does not occur to the cell in which the overload has occurred, and the handover can be controlled to occur in cells with other good signals. That is, since handover to the overloaded cell does not occur, additional S1 signaling and user data are not generated in the overloaded cell due to the handover, thereby increasing the load on the overloaded cell. Can be prevented.
  • the cell access information may be broadcast signaled. Describes how to deliver using Broadcast Signaling.
  • the first base station 410 may receive S1 interface load information from the third base station 430.
  • the first base station 410 and the third base station 430 may receive the S1 interface load information through the X2 interface.
  • the S1 interface load information may include an S1 TNL Load Indicator.
  • the first base station 410 may receive S1 interface load information using a resource status request message and a resource status update message.
  • the second base station 420 may receive S1 interface load information from the third base station 430.
  • the first base station 410 may determine the load state of the neighbor cell by using the received S1 interface load information.
  • the cell connection information may be generated according to the determination result.
  • the cell access information may be a black cell list.
  • the second base station 420 may determine the load state of the adjacent cell by using the received S1 interface load information and generate cell access information.
  • the first base station 410 may transmit cell access information.
  • the transmission scheme uses broadcast signaling.
  • the first base station may transmit cell access information (black cell list information) to all of the idle terminals in the cell using the System Information message.
  • the terminal 440 may manage cell access using the cell access information (black cell list information).
  • the terminal 440 may check a corresponding cell in an overloaded state through a black cell list, and thereby, may manage the access or call inflow to a cell in which an overload has occurred.
  • the idle terminal When the idle terminal receives the black cell list information through the system information message, the idle terminal excludes the cell included in the black cell list from the cell selection or cell reselection target. Therefore, the call connection to the cell where the load is generated is limited, and it is possible to control the other signal to be connected to the cell with good surroundings.
  • FIG. 3 and FIG. 4 a method of transmitting cell access information through dedicated signaling and broadcast signaling has been described, respectively. Or applied together.
  • FIG. 5 is a flowchart illustrating a terminal access control method of a base station according to an embodiment of the present invention.
  • FIG. 6 is a flowchart illustrating neighbor cell overload determination and cell access information management of a base station according to an embodiment of the present invention.
  • FIG. 8 is a diagram illustrating a configuration of neighbor cell parameters used for overload determination, which is an embodiment of the present invention.
  • FIG. 8 is a diagram illustrating a configuration of a base station system parameter used for overload determination, which is an embodiment of the present invention.
  • FIG. 4 is a diagram illustrating S1 TNL Load Action information according to an embodiment of the present invention.
  • the S1 interface load value of each cell is divided into low, medium, high, and overload.
  • the load level of the cell is not high in the low and medium state, the terminal access or call inflow is not restricted.
  • the load level of the cell is high in the high and overload state, it is explained by dividing the connection or call inflow of the terminal.
  • the description as described above is limited to one embodiment, but it is not necessarily to operate as described above.
  • the base station may receive S1 interface load information from an adjacent base station.
  • the S1 interface load information may include load information of at least one cell included in the neighboring base station. Since the S1 interface load information receiving process of step S510 has been described with reference to FIG. 2, a detailed description thereof will be omitted.
  • the base station may determine whether the neighboring cell is overloaded using the received S1 interface load information.
  • the base station may calculate the overload state holding time using the S1 interface load information. If the calculated overload time is greater than or equal to a predetermined determination cycle, the corresponding cell may be determined as an overload cell.
  • the overload determination method will be described in more detail below.
  • the base station may manage cell access information. For example, the identifier of the black cell list may be updated. By using the received load information, the overload identifier can be added or removed according to the load state.
  • the cell access information management method and the table management method will be described in more detail below.
  • the base station may transmit the managed cell access information to the terminal.
  • the base station may use dedicated signaling or broadcast signaling as a transmission method. It is also possible to transmit using both methods. Since the cell access information transmission method of the base station has been described with reference to FIGS. 3 and 4, a detailed description thereof will be omitted.
  • FIG. 6 is a flowchart illustrating neighbor cell overload determination and cell access information management of a base station according to an embodiment of the present invention.
  • the base station may check the load information state value for each cell by using the received S1 load state information.
  • the base station may proceed to step S603 and S609 according to the load information state value check to manage the neighbor cell parameters. First, a case in which the load information state value is high or overload will be described. If the load information state value is high or overload, the process may proceed to step S603.
  • NR means management numbering scheme.
  • TCI refers to each cell.
  • the S1 TNL Load Indicating Start Time may include time information of receiving S1 interface load information with high or overload for each cell.
  • the base station When a high or overload is received from the neighboring base station as the S1 interface load information state value, the base station considers that the neighboring cell is overloaded and stores time information reporting the initial overload state in the neighboring cell related information.
  • the neighbor cell related information may be cell access information.
  • the S1 TNL Load Indicating Start Time parameter may be added to the neighbor cell information table.
  • the S1 TNL Load Start Time parameter refers to a time when the S1 TNL Load state value is first transmitted as high or overload from a corresponding neighbor cell.
  • the base station can determine whether or not the cell is overloaded.
  • the overload determination may determine the cell as an overload cell if the calculated overload time is greater than or equal to a predetermined determination cycle.
  • the base station when the base station receives an S1 TNL Load status value as High or Overload periodically after receiving the S1 TNL Load status value from the neighbor cell as high or overload, the base station maintains an overload condition at the current time. Elapsed time can be calculated by subtracting the S1 TNL Indicating Start Time value. The base station compares the overload state holding time with a preset overload threshold value (S1 TNL Load Elapsed Time Threshold), and if the overload state holding time is larger (or abnormal, it may be different depending on the setting). The black cell list setting operation may be performed. In addition, when the overload state maintaining time is smaller than the overload threshold value, the black cell list setting operation may not be performed and the S1 TNL Load state value may be received and determined in the next cycle.
  • S1 TNL Load Elapsed Time Threshold preset overload threshold value
  • the black cell list setting operation may not be performed and the S1 TNL Load state value may be received and determined in the next cycle.
  • an S1 TNL Load Elapsed Time Threshold parameter may be additionally used as shown in FIG. 8.
  • the base station system parameter configuration may be added to the base station setting information as shown in FIG. 8 to use the threshold value of the determination of performance of operation S605.
  • the parameter of FIG. 8 may have a value in seconds.
  • the parameter may be used to determine whether to designate a black cell list for the neighboring cell that is overloaded.
  • the overload blind person may be generated for the cell determined as overload in step S605.
  • Overload identifier generation may be included in the management of cell access information.
  • the overload identifier may be implemented by updating the identifier of the black cell list.
  • the black cell list setting operation may be performed.
  • the black cell list may be configured in the actual neighbor cell according to the S1 TNL Load Action table configuration information as shown in FIG. 9.
  • the S1 TNL Load Action table is only an embodiment of managing the black cell list, and the method of managing the black cell list or cell connection information is not necessarily limited to table management in the embodiment of the present invention.
  • the S1 TNL Load Indicator Status is information indicating whether the load state of a specific cell is high or overload. For each cell, information indicating whether a dedicated black cell list action or a broadcast black cell list action is used may be added. If the load state information is high or the overload state is greater than the overload threshold, there may be a method of always registering in the black cell list to block the access to the neighbor cell, and additionally depending on whether the load state information is high or overload The method of transmitting list information may be different.
  • a target cell is added only to a dedicated black cell list and a broadcast black cell list. May not be added.
  • the target cell may be added to both the dedicated black cell list and the broadcast black cell list.
  • the overloaded neighboring cell When the load state information is high, the overloaded neighboring cell is added only to the dedicated signaling method list, and an RRC Connection Reconfiguration message (including the overloaded cell information in the BlackCellsToAddMoList) is transmitted only to the active terminal (s). It is possible to prevent the terminals from weighting the load through the handover to the target cell. By not adding the overloaded cell information to the broadcast signaling scheme list in the high state, it is possible to select a target cell for the idle terminal (s). When the load state is in the overload state, the neighboring cell information which is overloaded is added to the broadcast signaling scheme list so that the overloaded cell is not selected for the idle terminal, and the load is increased on the overloaded cell. You can stop it. In this manner, the black cell list may be transmitted in a different transmission scheme according to the load state information, thereby configuring an optimized system.
  • the base station may manage neighbor cell parameters. Adjacent cells with low or medium load information status values may take no action without storing time information unless they are immediately overloaded. If the neighbor cell was just overloaded, the S1 TNL Load Indicating Start Time value can be initialized to NULL when the neighbor cell is overloaded when the S1 TNL Load status value is received low or medium. have.
  • the overload state of the target cell may be released immediately, but the overload release may be determined using the overload release threshold information. That is, when the S1 load information state value of low or medium is maintained for a predetermined time, it may be determined that the overload is released. If the overload does not exceed the preset threshold information, the next cycle can be determined again by receiving the S1 TNL Load status value.
  • step S613 the base station deletes the corresponding neighbor cell from the black cell list managed by the base station, transmits a black cell list deletion message to the terminal, or updates the system information if necessary and broadcasts it. have.
  • the target cell to be released from the black cell list exists in the dedicated black cell list, the target cell is deleted from the list managed by the base station, and the black cell to which the overload has occurred is previously displayed through the RRC Connection Reconfiguration message.
  • the RRC connection reconfiguration message may be transmitted again to the MSs which have been transmitted, and may be deleted from the black cell list of the UE. Since the target cells are newly deleted from the black cell list managed by the base station, the terminals that are newly active are not transmitted to the terminal to the black cell list.
  • the cell When the target cell exists in the broadcast black cell list, the cell may be deleted from the list of the base station, and the updated information may be broadcast through a system information message.
  • terminals in an active or idle state can perform handover and terminal access to the neighbor cell where the overload is released.
  • FIG. 10 is a flowchart illustrating a cell access control method of a terminal according to an embodiment of the present invention.
  • the UE may receive cell access information from a base station.
  • the terminal may receive the cell access information in various ways according to the operation state.
  • the active terminal may receive cell connection information through an RRC Connection Reconfiguration message.
  • the idle terminal may receive cell access information through a System Information message.
  • the cell access information may include black cell list identifier information for at least one neighboring cell.
  • the terminal may update the cell access management information.
  • the terminal may manage to delete the corresponding cell from the black cell list when a command for releasing from the black cell list of the specific cell is included.
  • list management for adding the corresponding cell to the black cell list may be performed.
  • the UE may control the neighboring cell registered in the black cell list not to perform an operation of increasing the cell load such as terminal access or call inflow handover, so that the neighboring cell in an overloaded state may be quickly recovered.
  • the load becomes low on the cell in which the overload has occurred, normal service can be achieved by initiating limited handover or terminal access.
  • the terminal receives the cell connection information for limiting the connection to the cell overloaded from the base station, and controls the cell connection in response to the received cell connection information.
  • the cell access information receives S1 interface load information between the neighbor base station and the mobility management entity from the neighbor base station at the base station, and in response to the received S1 interface load information, an overload has occurred. If it is determined that the overload state of the at least one cell of the at least one cell included in the neighboring base station is generated including the identifier.
  • the UE may receive the cell connection information by using an RRC Connection Reconfiguration message when the terminal is in an active state.
  • the UE may receive the cell connection information by using a System information message. Can be received.
  • the cell access information may be managed by generating an access restriction identifier for a cell including an overload identifier and controlling to restrict access to a cell including the access restriction identifier. have.
  • the access restriction identifier may be generated or deleted for each cell by comparing the new cell access information with the previously received cell access information, and access is performed for the cell in which the access restriction identifier has been deleted. You can lift the restriction.
  • FIG. 11 is a diagram illustrating a base station according to an embodiment of the present invention.
  • the base station 1100 includes a transceiver 1110 for performing data communication and a controller 1130 for controlling overall operations of the base station.
  • the transceiver 1110 may perform data communication with an adjacent base station and a terminal.
  • the controller 1130 may further include a load information controller 1131.
  • the load information control unit 1131 receives load information between the neighbor base station and the mobility management entity from the neighbor base station, determines whether an overload occurs in the neighbor cell by using the received load information, and generates an overload. If it is determined that the access to the cell, the cell access information for limiting the connection to the neighboring cell is overloaded may be controlled.
  • the load information control unit 1131 may control to transmit the cell connection information to an active terminal using an RRC connection reconfiguration message. In addition, the load information control unit 1131 may control to transmit the cell access information to all idle state terminals by using a system information message.
  • the load information control unit 1131 may calculate an overload state holding time using the load information, and may control to determine that the overload state holding time is an overload if the overload state holding time is equal to or greater than a predetermined determination period.
  • the load information control unit 1131 may control to generate the cell access information including at least one neighbor cell including an overload identifier and an identifier indicating a cell access information transmission method for the neighbor cell including the overload identification factor. Can be.
  • the load information control unit 1131 determines whether the overload state is released for at least one adjacent cell, and if it is determined that the overload state is released, the load information controller 1131 deletes the overload identifier generated for the adjacent cell in which the overload state is released.
  • the mobile terminal may control to transmit new cell access information from which the overload identifier is deleted.
  • each part of the base station is divided into blocks for convenience of description and is not necessarily limited thereto. That is, the operation performed by the load information controller 1131 may be performed by the controller 1130.
  • FIG. 12 is a view for explaining a terminal which is an embodiment of the present invention.
  • the terminal 1200 may include a transceiver 1210 for performing data communication and a controller 1230 for controlling overall operations of the terminal.
  • the transceiver 1210 may perform data communication with the base station.
  • the controller 1230 may further include a connection management controller 1231.
  • the access management controller 1231 may receive the cell access information for limiting access to the overloaded cell from the base station, and control to limit the cell access in response to the received cell access information.
  • the access management controller 1231 controls to receive the cell connection information by using a RRC connection reconfiguration message, and the terminal is in an idle state. In this case, it may be controlled to receive the cell access information by using a system information message.
  • the access management controller 1231 may generate a access restriction identifier for a cell including the overload identifier, and control to restrict access to a cell including the access restriction identifier.
  • the access management control unit 1231 receives new cell access information, generates or deletes a access restriction identifier for each cell by comparing the new cell access information with previously received cell access information, and access access identifier. May control to release the access restriction on the deleted cell.
  • each unit of the terminal is described by dividing into blocks for the convenience of description, but is not necessarily limited thereto. That is, the operation performed by the access management control unit 1231 may be performed by the control unit 1230.

Landscapes

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

Abstract

La présente invention, selon un mode de réalisation, concerne une station de base de commande d'accès d'un terminal. L'invention concerne une station de base et un procédé de commande d'accès d'un terminal, le procédé comprenant les étapes consistant à : recevoir, d'une station de base adjacente, des informations concernant une charge entre la station de base adjacente et une entité de gestion de mobilité ; déterminer, sur la base des informations de charge reçues, si une surcharge s'est produite dans une cellule adjacente ; et s'il est déterminé qu'une surcharge s'est produite dans la cellule adjacente, transmettre, à au moins un terminal, des informations d'accès aux cellules pour limiter l'accès à la cellule adjacente dans laquelle la surcharge s'est produite, les informations de charge comprenant des informations de charge concernant au moins une cellule comprise dans la station de base adjacente. L'invention concerne également un terminal de commande d'accès à la cellule adjacente par réception des informations d'accès aux cellules venant de la station de base, et un procédé de commande d'accès du terminal.
PCT/KR2014/008361 2013-09-09 2014-09-05 Appareil et procédé de commande d'accès de terminal dans un système de communication mobile WO2015034305A1 (fr)

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KR10-2013-0107670 2013-09-09
KR1020130107670A KR102051851B1 (ko) 2013-09-09 2013-09-09 이동통신 시스템에서 단말 접속 제어 장치 및 그 방법

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WO2017010846A1 (fr) * 2015-07-15 2017-01-19 엘지전자 주식회사 Procédé d'émission ou de réception d'informations sur l'accès d'un terminal à un réseau dans un système de communication sans fil et appareil associé
CN115022932A (zh) * 2022-06-02 2022-09-06 成都中科微信息技术研究院有限公司 一种提高nr系统小区节能关闭时终端业务可靠性的方法及nr系统
WO2023131282A1 (fr) * 2022-01-10 2023-07-13 华为技术有限公司 Procédé de communication, dispositif de communication et système de communication
KR102715686B1 (ko) 2021-10-06 2024-10-11 주식회사 케이티 이동통신시스템에서의 기지국 감시방법 및 그 장치

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KR20130032152A (ko) * 2011-09-22 2013-04-01 에릭슨 엘지 주식회사 채널 과부하 판단에 의한 가입자 트래픽 제어 방법 및 그를 위한 이동통신 시스템
KR20130053378A (ko) * 2011-11-15 2013-05-23 삼성전자주식회사 멀티 캐리어 기반의 이동 통신 시스템에서 아이들 단말 분산 방법 및 장치

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KR20130053378A (ko) * 2011-11-15 2013-05-23 삼성전자주식회사 멀티 캐리어 기반의 이동 통신 시스템에서 아이들 단말 분산 방법 및 장치

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WO2017010846A1 (fr) * 2015-07-15 2017-01-19 엘지전자 주식회사 Procédé d'émission ou de réception d'informations sur l'accès d'un terminal à un réseau dans un système de communication sans fil et appareil associé
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KR102715686B1 (ko) 2021-10-06 2024-10-11 주식회사 케이티 이동통신시스템에서의 기지국 감시방법 및 그 장치
WO2023131282A1 (fr) * 2022-01-10 2023-07-13 华为技术有限公司 Procédé de communication, dispositif de communication et système de communication
CN115022932A (zh) * 2022-06-02 2022-09-06 成都中科微信息技术研究院有限公司 一种提高nr系统小区节能关闭时终端业务可靠性的方法及nr系统
CN115022932B (zh) * 2022-06-02 2024-06-18 成都中科微信息技术研究院有限公司 一种提高nr系统小区节能关闭时终端业务可靠性的方法及nr系统

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