KR101451628B1 - Method and apparatus for controlling load of downlink data for mobile communication - Google Patents

Abstract

The present invention relates to a downlink data load control technique for mobile communication suitable for efficiently providing a multimedia service including a voice / image service to a subscriber in an LTE / EPC network including an E-UTRAN, The processing priority is given to the received DDN message in accordance with the load level of the downlink data processing control unit in the MME or the load level of the data processing control unit in the eNodeB, and the DDN message is selectively processed based on the assigned priority , Priority services such as voice / video services, and relatively strong traffic control for general wireless Internet traffic. This enables various high-quality services to be provided to VoLTE or LTE subscribers. .

Description

TECHNICAL FIELD [0001] The present invention relates to a load control method for downlink data for mobile communication, and more particularly,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a mobile communication service management method, and more particularly, to a mobile communication service management method for providing a voice / data service to a subscriber in an LTE (Long Term Evolution) / EPC (Evolved Packet Core) network including an Evolved-UMTS Terrestrial Radio Access Network (E- And more particularly, to a method and apparatus for controlling a load of downlink data for mobile communication, which is suitable for effectively providing a multimedia service including a video service.

As is well known, a 3rd Generation Partnership Project (3GPP) mobile communication system based on a WCDMA (Wideband Code Division Multiple Access) radio access technology is widely deployed all over the world, and the first evolutionary stage of WCDMA HSDPA (High Speed Downlink Packet Access), which can be defined as a high-speed wireless communication system, provides a 3GPP mobile communication system with high-competitive wireless access technology in the mid-term future.

However, as the requirements and expectations of users and operators continue to increase and competition for development of wireless access technologies continues, there is a need to evolve new technologies in 3GPP mobile communication systems in order to gain competitiveness in the future. That is, a reduction in cost per bit, an increase in service availability, the use of a flexible frequency band, a simple structure and an open interface, and an appropriate power consumption of a UE are required. In addition, prevention of unnecessary latency at the network node and efficient use of network resources can also promote the technology evolution in 3GPP.

In 3GPP Release 8, EPC, which is a network architecture, is described as one of mobile communication systems for meeting the above-mentioned requirements. The EPC is a collection of network nodes for the 3GPP LTE system. The EPC supports the evolution of the core network of the existing 3GPP system architecture, supporting the evolved RAN (E-UTRAN), and the efficient network structure that simplifies the network node to increase the efficiency of the packet network. . A wireless communication system including an EPC and an E-UTRAN may be referred to as an EPS (Evolved Packet System) and corresponds to an LTE mobile communication system currently being implemented and serviced in Korea.

On the other hand, the voice and video service of Voice (/ Multimedia) over LTE (hereinafter referred to as VoLTE) is a multimedia service using a packet bearer on the E-UTRAN in the LTE / EPC network. After accessing the LTE / EPC network and updating the subscriber location and status information through the subscriber information authentication step, a session setup and bearer allocation for the multimedia service is received and an appropriate QoS (Quality of Service).

Korean Patent Publication No. 10-2012-0030540, published on March 28, 2012.

The VoLTE voice / video service is provided as a packet data service on the PDN connectivity in the LTE / EPC network. Therefore, the traffic flow for VoLTE voice / video service is basically the same as the data service including the general wireless Internet access.

Accordingly, when an overload occurs in the network and an operator has to control the level of service provision, priority processing is provided for high priority services such as voice / video service, and relatively strong There is a need to perform traffic control (ie, selective overload control), and at the moment there is no suggestion for such a technical countermeasure.

According to one aspect of the present invention, there is provided a method for controlling a mobile communication system, the method comprising: searching for a predetermined policy priority when a load of a downlink for mobile communication becomes a reference of a predetermined overload; Extracting and classifying the type of the message based on the extracted service identifier information, and extracting and processing a priority processing target message among the classified messages classified according to the preset policy priority A method of controlling a load of downlink data for mobile communication is provided.

According to another aspect of the present invention, there is provided a load monitoring apparatus comprising: a load monitor for generating a load control signal corresponding to a load of a downlink for mobile communication when the load is a predetermined overload reference; A priority decision unit for extracting service identifier information from a message received for a downlink and classifying the type of the message based on the extracted service identifier information; And a call request message processor for extracting a priority processing target message among the classified messages classified according to the preset policy priority and transmitting the extracted priority processing target message to the corresponding eNodeB, Of the load control device.

According to the present invention, a processing priority is given to a received DDN message according to the load level of the downlink data processing control unit in the MME or the load level of the data processing control unit in the eNodeB, and the DDN message is selectively (Priority processing or discarding), so that priority processing is provided for high priority services such as audio / video services, and relatively strong traffic control (i.e., selective overload control) is applied to general wireless Internet traffic Enabling them to provide a variety of high-quality services to VoLTE or LTE subscribers.

1 is a block diagram of a mobile communication load control system suitable for applying downlink data load control apparatus for mobile communication according to the present invention;
2 is a block diagram of an apparatus for controlling a load of downlink data for mobile communication according to the present invention;
3 is a flowchart illustrating a main process of controlling the load of downlink data according to an embodiment of the present invention;
4 is a flowchart illustrating a main process of controlling the load of downlink data according to another embodiment of the present invention;
5 is a flowchart illustrating a main process of controlling the load of downlink data according to another embodiment of the present invention;

First, the advantages and features of the present invention, and how to accomplish them, will be made clear with reference to the embodiments to be described in detail with reference to the accompanying drawings. While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. It is to be understood that the following terms are defined in consideration of the functions of the present invention, and may be changed according to intentions or customs of a user, an operator, and the like. Therefore, the definition should be based on the technical idea described throughout this specification.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram of a mobile communication load control system suitable for applying a downlink data load control apparatus for mobile communication according to the present invention. The mobile communication load control system includes an eNodeB 102, a Serving Gateway (SGW) 104, a PGW A Policy and Charging Rule Function (PCRF) 108, a Mobility Management Entity (MME) 110, and a Home Subscriber Server (HSS) 112.

1, the eNodeB 102 exemplarily shows only one eNodeB for the sake of convenience of explanation and improvement of understanding, but it is also possible to provide a communication service (e. G., Voice service, video service) for several hundred to several thousand eNodeBs (Or various multimedia services including service, additional information service, etc.) can be supervised by the MME 110, dozens of eNodeBs form one TA (Tracking Area) area (or group) Several tens of TA areas can be managed in the form of forming one cell area.

That is, the eNodeB 102 is a device supporting next generation technologies and services such as LTE (or VoLTE), and includes radio frequency (RF) signal transmission and transmission signal strength and quality measurement, baseband signal processing, Resource management, etc. The eNodeB 102 can guarantee a stable connection with a plurality of terminal devices. In order to realize the present invention, a data processing controller (not shown) provided in the eNodeB And transmits the load reduction request message to the MME 110 in order to prevent overload of the MME 110.

Next, the SGW 104 performs a session control (session) process for processing payload traffic according to a preset session based on a communication policy in the communication network provided from the PCRF 108 via a PGW 106 control and the like, and supports the hand-off in the LTE mobile communication system and the 3GPP in cooperation with the eNodeB 102 with the S1-U interface, and supports the handover of the PGW 106 An ESP bearer (Evolved Packet System bearer), and a PDU (Packet Data Unit) using tunneling. Here, the SGW 104 provides a function such as forwarding the policy priority information provided from the PCRF 108 to the MME 110 via the PGW 106 in order to control the load of the downlink data according to the present invention can do.

The PGW 106 is a user plane node for assigning an IP address of a terminal apparatus according to a communication policy provided from the PCRF 108 and performing session control for interworking with an external Internet network and a non-3GPP network, SGW 104 and the external network, provides tunneling and IP routing functions, delivers the PDU to the SGW 104 and the external network, and transmits the policy priority information provided from the PCRF 108 to the SGW 104 and the external network, And transferring the data to the data processing unit 104.

Here, the PCRF 108 has a function of performing communication policy and accounting processing in a communication network, for example, by providing dynamic QoS and a charging rule according to a service data flow And may provide a function of transmitting policy priority information necessary for load control of the downlink data necessary for the execution of the present invention to the PGW 106. [

Meanwhile, the MME 110 is a node that manages mobility of a terminal (terminal device), and can handle session management, idle subscriber management, paging, and subscriber authentication functions. That is, the MME 110 may control the control plane, such as processing a control signal when there is a binding request from the terminal or another network node, for example, the PGW 106 or the SGW 104, And receives the subscriber profile information, authentication and location related data from the HSS 112, which will be described later, and sets up an EPS bearer or an IP tunnel and performs mobility management, etc. Function can be performed.

This MME 110 may comprise substantially a load control device 200 of the present invention (e.g., 200 of FIG. 2) and may have a configuration as shown, for example, in FIG. 2, Specific contents for controlling the load of the downlink data will be described later in detail with reference to Figs. 2 to 5.

Finally, the HSS (Home Subscriber Server) 112 includes a database (not shown) including subscriber information of a wireless communication system for a legacy network (e.g., a WCDMA mobile communication system) and / or an LTE (or VoLTE) mobile communication system a data base, and the like, and may store subscriber profile information, authentication and location-related data, and the like.

Next, a load control technique of the present invention suitable for application to a mobile communication load control system having the above-described configuration will be described in detail.

FIG. 2 is a block diagram of a downlink data load control apparatus 200 for mobile communication according to the present invention. The load monitoring unit 202, the priority determination unit 204, the priority policy execution unit 206, And a call request message processing unit 208, and the like.

Referring to FIG. 2, the load monitoring unit 202 may include a downlink data processing control unit (not shown) during the execution of a service mode (voice service, image service, multimedia service, etc.) (For example, a CPU or the like), that is, detects a load value, and monitors whether or not the detected load value reaches a predetermined overload reference value (for example, 80% of the CPU load) When it is determined that the detected load value exceeds the predetermined overload reference value, the load monitoring unit 202 generates a load control signal corresponding to the detected load load value and transmits the same to the priority determining unit 204 do.

As an example, if the load of the entire system (or the data processing control unit) exceeds a predetermined overload reference value (for example, 80% of the CPU load), the throughput per hour of the message exceeds the predetermined throughput reference value, When the predetermined overload reference value exceeds a predetermined time (for example, 1 second, 2 seconds, 3 seconds, etc.), the load monitoring unit 202 generates a load control signal for priority processing according to service priority.

The load monitoring unit 202 may receive the overload status information from any eNodeB while the MME 110 is executing the service mode (voice service, video service, multimedia service, etc.) And when the overload state information is obtained, the load control signal is generated and transmitted to the priority determining unit 204 together with the delimiter information of the corresponding eNodeB.

Here, the overload status information indicates that when the eNodeB is overloaded, for example, the load of the data processing control unit of the eNodeB exceeds a predetermined overload reference value (e.g., 80% of the CPU load) or the throughput per hour of the message exceeds a predetermined throughput When the load of the data processing control unit exceeds the reference value or exceeds the predetermined overload reference value by a predetermined time (for example, 1 second, 2 seconds, 3 seconds, etc.), the eNodeB is generated and transmitted to the MME 110 . ≪ / RTI >

When the load control signal (or the delimiter information of the load control signal and the eNodeB) is transmitted from the load monitoring unit 202, that is, the system in the MME is overloaded or the eNodeB When an overload is generated, the CPU 101 extracts (searches) predetermined policy priority information stored in an internal memory (not shown) from the PCRF 108 in FIG. 1, and outputs the extracted policy priority information to a priority policy And transfers it to the execution unit 206.

Here, the policy priority may include a paging request message for a voice service incoming, a paging request message for a video service incoming, a paging request message for a general data (traffic) incoming, . ≪ / RTI >

The policy priorities are classified into class A, class B, and class C according to the priorities of the local eNodeB clusters. For example, the eNodeB list is assigned to each class (for example, Gangnam station, Daechi station, , The class A can be set to the first priority of the priority of processing, the class B to the priority of the first priority, and the class C to the priority of the third priority of the processing target. That is, the present invention can apply the priority processing of the classified message based on the predetermined policy priority to at least one pre-designated eNodeB.

Next, the priority policy execution unit 206 transmits a message received from the SGW 104 of FIG. 1 through a bearer of the established communication session, such as a DDN (Downlink Data Notification) message (for example, a paging request message (Or service type identifier information) from the service identifier information, the paging request message for receiving the video service, the paging request message for receiving the general data (traffic), and the like) And transmits the classified service identifier information to the call request message processing unit 208 together with predetermined policy priority information.

Here, the service identifier information included in each DDN message can be defined by an extension parameter message of the corresponding DDN message, and the definition of the service identifier information can be executed by the SGW 104 of FIG.

Finally, the call request message processing unit 208 extracts a priority processing target message (for example, a paging request message for a voice service call admission) among the types of messages based on the preset policy priority, To the corresponding eNodeB. If the paging request message for the voice service is set as the priority target message according to the policy priority, the paging request message for receiving the video service and the general data (Eg, 50%, etc.) may be automatically discarded depending on the communication policy or the degree of overload of the downlink data processing controller in the MME 110.

When the paging request message for the voice service and the paging request message for the video service are set as the priority target message according to the policy priority, the paging request message for the normal data (traffic) All or a portion thereof (e.g., 50%, etc.) may be automatically discarded depending on the degree of overload of the downlink data processing controller in the system 110.

Next, a series of processes for controlling the load of downlink data using the policy priority information and the service identifier information through the downlink data load control apparatus of the present invention having the above-described configuration will be described in detail do.

[Example 1]

3 is a flowchart showing a main process of controlling the load of downlink data according to the present embodiment.

3, when the mobile communication load control system is executing the service mode, the load monitoring unit 202 in the MME 110 detects the load value of the downlink data processing control unit at a predetermined periodicity (step 302 ).

Subsequently, it is checked whether or not the load value detected in step 302 reaches a predetermined overload reference value (step 304), and it is determined that the load value detected as a result of the check here reaches the predetermined overload reference value The load monitoring unit 202 generates a corresponding load control signal (that is, a control signal for screening process based on the service-specific priority), and transmits the generated load control signal to the priority determining unit 204.

For example, when the load of the entire system (or the data processing control unit) exceeds a predetermined overload reference value (e.g., 80% of the CPU load), the throughput per hour of the message exceeds the predetermined throughput reference value, When it is determined that the set overload reference value exceeds a predetermined time (for example, 1 second, 2 seconds, 3 seconds, etc.), the load monitoring unit 202 generates a load control signal for priority processing according to service priority .

In response to this, when the load control signal is transmitted from the load monitoring unit 202, the priority determining unit 204 determines whether or not the preset policy priority information, which is provided from the PCRF 108 in Fig. 1 and is stored in the internal memory, And transmits the extracted policy priority information to the priority policy execution unit 206 (step 306).

Here, the policy priority is set in the order of a paging request message for incoming voice service, a paging request message for incoming video service, and a paging request message for incoming general data (traffic) according to the communication policy .

Then, the priority policy execution unit 206 transmits a DDN message received via the bearer of the predetermined communication session, for example, a paging request message for a voice service call, a paging request message for a video service call, And classifies (classifies) the type of the corresponding DDN message (step 308). The classified service separator information is transmitted to the call request message processing unit 208 together with predetermined policy priority information . Here, the service identifier information included in each DDN message can be defined by an extension parameter message of the DDN message.

As a result, when the call request message processing unit 208 extracts a priority processing target message among the classified messages according to the preset policy priority, for example, when the paging request message for voice service is set as the priority processing target message Only the corresponding DDN messages are extracted and transmitted to the corresponding eNodeB (step 310), and the rest of the DDN messages are automatically discarded according to the load of the communication policy or the downlink data processing control part, in whole or in part (for example, 50% (Step 312).

Also, unlike the above, when the paging request message for the voice and video service is set as the priority target message, the DDN message related to the voice and video service is preferentially processed and the DDN message related to the general data (traffic) The priority processing in which all or a part (e.g., 50%, etc.) of the communication policy or the MME 110 is automatically discarded depending on the degree of overload of the downlink data processing controller will be executed.

Therefore, the method of controlling the load of downlink data according to the present embodiment is characterized in that when an overload situation occurs in the downlink data processing control unit in the MME, each subscriber is assigned a preferential priority processing service according to a predetermined policy priority (priority for each service type) Can be provided.

[Example 2]

4 is a flowchart showing a main procedure for controlling the load of downlink data according to the present embodiment.

4, the processes of steps 402 to 406 are different only in that the policy priority information is priority information for each local eNodeB cluster (that is, at least one previously designated eNodeB information) Is substantially the same as each processing in steps 302 to 306 shown in Fig.

Therefore, the detailed description of the processing of these steps 402 to 406 is omitted here in order to avoid unnecessary redundant description for the sake of simplification of the specification.

First, when the policy priority information is extracted through the progress of the step 406, the priority policy executing unit 206 determines whether or not the eNodeB list table The local eNodeB cluster to be preferentially processed is selected from the predefined eNodeB list stored in the local eNodeB list stored in the local eNodeB list (step 408).

In response, the call request message processor 610 extracts DDN messages related to the selected local eNodeB cluster among the DDN messages received from the SGW 104, and transmits the extracted DDN messages to the corresponding eNodeB belonging to the corresponding local eNodeB cluster , The DDN messages associated with the local eNodeB cluster that are not designated for priority processing are automatically discarded in whole or in part (e.g., 50%, etc.) according to the communication policy or the degree of overload of the downlink data processing controller in the MME 110 (Step 410).

Therefore, in the downlink data load control method according to the present embodiment, when an overload situation occurs in the downlink data processing control unit in the MME, as in the first embodiment described above, each subscriber is given a predetermined policy priority eNodeB priority for each cluster) can be provided.

[Example 3]

5 is a flowchart showing a main process of controlling the load of downlink data according to the present embodiment.

5, when the mobile communication load control system is executing the service mode (step 502), the load monitoring unit 202 in the MME 110 checks whether or not the overload status information is received from any eNodeB Step 504). If the overload status information is not received as a result of the check here, the MME 110 proceeds to a process of processing a call request message according to a normal procedure (Step 506).

As a result of the check in step 504, when the overload state information is received from any eNodeB, the load monitoring unit 202 delivers the overload state information together with the identifier information of the eNodeB to the priority decision unit 204. [ Here, the overload status information indicates that when the eNodeB is overloaded, for example, the load of the data processing control unit of the eNodeB exceeds a predetermined reference value (e.g., 80% of the CPU load) or the throughput per hour of the message exceeds a predetermined throughput When the load of the data processing control unit exceeds the reference value or exceeds the predetermined overload reference value by a predetermined time (for example, 1 second, 2 seconds, 3 seconds, etc.), the eNodeB is generated and transmitted to the MME 110 . ≪ / RTI >

In response to this, the priority determining unit 204 extracts (searches) predetermined policy priority information stored in the internal memory from the PCRF, and outputs the extracted policy priority information to the priority policy executing unit 206 (step 508). Here, the policy priority is set in the order of a paging request message for incoming voice service, a paging request message for incoming video service, and a paging request message for incoming general data (traffic) according to the communication policy .

Then, the priority policy execution unit 206 transmits a DDN message related to the eNodeB received through the bearer of the predetermined communication session, for example, a paging request message for a voice service call, a paging request message for a video service call, (Step 510). The service separator information of the corresponding eNodeB classified according to the service type is classified into the service identifier information of the corresponding eNodeB To the call request message processing unit 208 together with the set policy priority information. Here, the service identifier information included in each DDN message related to the eNodeB may be defined by an extension parameter message of the corresponding DDN message.

As a result, the call request message processing unit 208 extracts a priority processing target message among the types of messages of the eNodeB based on the preset policy priority, for example, when the paging request message for voice service is set as the priority processing target message (Step 512), the remaining DDN messages related to the eNodeB are transmitted to the eNodeB of the eNodeB according to the communication policy or the load of the data processing controller in the eNodeB, %, Etc.) (step 514).

Also, unlike the above case, when the paging request message for voice and video service is set as the priority processing target message for the eNodeB, the DDN message related to the voice and video service is processed first and the general data (traffic) The relevant DDN message will be subjected to priority processing in which all or part (e.g., 50%, etc.) of the data policy is automatically discarded depending on the communication policy or the degree of overload of the data processing controller in the eNodeB.

Therefore, in the method of controlling the load of downlink data according to the present embodiment, when an overload situation occurs in a data processing control unit in an eNodeB as in the first embodiment described above, the eNodeB transmits to each subscriber It is possible to provide a selective priority service according to a predetermined policy priority (i.e., priority of each eNodeB service type).

In the meantime, each block of the accompanying block diagrams and combinations of steps of the flowchart may be performed by computer program instructions. These computer program instructions may be loaded into a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus so that the instructions, which may be executed by a processor of a computer or other programmable data processing apparatus, And means for performing the functions described in each step are created. These computer program instructions may also be stored in a computer usable or computer readable memory capable of directing a computer or other programmable data processing apparatus to implement the functionality in a particular manner, It is also possible for the instructions stored in the block diagram to produce a manufacturing item containing instruction means for performing the functions described in each block or flowchart of the block diagram. Computer program instructions may also be stored on a computer or other programmable data processing equipment so that a series of operating steps may be performed on a computer or other programmable data processing equipment to create a computer- It is also possible that the instructions that perform the processing equipment provide the steps for executing the functions described in each block of the block diagram and at each step of the flowchart.

Also, each block or each step may represent a module, segment, or portion of code that includes at least one or more executable instructions for executing the specified logical function (s). It should also be noted that in some alternative embodiments, the functions mentioned in the blocks or steps may occur out of order. For example, two blocks or steps shown in succession may in fact be performed substantially concurrently, or the blocks or steps may sometimes be performed in reverse order according to the corresponding function.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims. It is easy to see that this is possible. In other words, the embodiments disclosed in the present invention are not intended to limit the scope of the present invention but to limit the scope of the technical idea of the present invention. Therefore, the scope of protection of the present invention should be construed in accordance with the following claims, and all technical ideas within the scope of equivalents should be interpreted as being included in the scope of the present invention.

202: load monitoring unit 204: priority determining unit
206: Priority policy execution unit 208: Call request message processing unit

Claims (12)

Searching for a predefined policy priority when a load of a downlink for mobile communication becomes a reference of a predetermined overload;
Selecting a local eNodeB cluster to be subjected to priority processing from a list of eNodeBs according to the predefined policy priorities;
Extracting service identifier information from the received message for the downlink to the selected local eNodeB cluster and classifying the type of the message based on the extracted service identifier information;
Extracts a priority processing target message among the classified messages classified according to the predefined policy priority, transmits the message to the corresponding eNodeB in the local eNodeB cluster, and executes a priority processing for discarding all or a part of the remaining messages according to the degree of load process
And transmitting the downlink data to the mobile station. The method according to claim 1,
The load,
The amount of usage of the data processing control unit or the throughput per hour of the message
A method for controlling the load of downlink data. delete The method according to claim 1,
The load,
An overload state information provided from the corresponding eNodeB,
The message comprises:
The downlink message to the corresponding eNodeB
A method for controlling the load of downlink data. 5. The method of claim 4,
The load,
The amount of usage of the data processing control unit in the eNodeB or the throughput per hour of the message
A method for controlling the load of downlink data. The method according to claim 1,
The message comprises:
A Downlink Data Notification (DDN) message
A method for controlling the load of downlink data. The method according to claim 6,
The service separator information includes:
Defined by the Extension Parameter message of the DDN message
A method for controlling load of downlink data for mobile communication. The method according to claim 1,
The priority processing target message includes:
At least one of a paging request message for a voice service incoming request and a paging request message for a video service incoming request
A method for controlling load of downlink data for mobile communication. A load monitoring unit for generating a load control signal corresponding to the load of the downlink for mobile communication when the load of the downlink for mobile communication becomes a reference of a predetermined overload,
A priority determination unit for extracting a predetermined policy priority when the load control signal is generated;
Selects a local eNodeB cluster to be subjected to priority processing from the list of eNodeBs according to the preset policy priority, extracts service identifier information from a message received for a downlink to the selected local eNodeB cluster, A priority policy execution unit for classifying the type of the message based on the delimiter information,
Extracts a priority processing target message among the classified messages classified according to the predefined policy priority, transmits the message to the corresponding eNodeB in the local eNodeB cluster, and executes a priority processing for discarding all or a part of the remaining messages according to the degree of load Call request message processor
Wherein the downlink data load control unit comprises:
delete 10. The method of claim 9,
Wherein the load monitoring unit comprises:
And generating the load control signal when the overload state information is provided from the corresponding eNodeB
A load control device for downlink data. 10. The method of claim 9,
The call request message processing unit,
At least one of a paging request message for a voice service incoming request and a paging request message for a video service incoming request is extracted as the priority processing target message
A load control device for downlink data for mobile communication.

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