KR20140050997A - Method and apparatus for processing paging for mobile communication - Google Patents

Abstract

The present invention relates to an apparatus and method to minimize a load generated in a paging process for a subscriber in an LTE/EPC network including E-UTRAN. For this, the present invention provides an apparatus for processing paging for mobile communication, which includes a master block which generates paging information based on a paging request message and transmits the paging information if the paging request message is received, and an interconnection block which changes the previously stored encoding paging information based on the paging information and transmits the changed information to one or more base stations. [Reference numerals] (210) Master block; (222) Free encoding data management unit; (224) Paging update unit; (226) Paging processing unit; (AA) Paging request message

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a paging processing apparatus and method for mobile communication,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication service management method, and more particularly, to a mobile communication service management method in an LTE (Long Term Evolution) / EPC (Evolved Packet Core) network including an Evolved-UMTS Terrestrial Radio Access Network The present invention relates to a paging processing apparatus and method for mobile communication that can control a load by simplifying an encoding process in a mobile communication terminal.

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, since the traffic flow for VoLTE voice / video service is basically the same as the data service including the general wireless Internet access, the traffic control is required to provide high quality wireless communication service. But overload control is essential due to the characteristics of wireless communication where a large amount of traffic is generated.

Particularly, a large amount of traffic of a paging process for transitioning an idle terminal to an active state can be generated. When an overload occurs due to such traffic, a voice / video service of a wireless communication service, for example, VoLTE, At present, there is no suggestion for such a technical countermeasure.

According to one aspect of the present invention, there is provided a method of transmitting a paging request message, the method comprising: a master block generating and sending paging information based on the paging request message when a paging request message is received; To a mobile communication terminal, the mobile communication terminal comprising:

In the paging processing apparatus according to the embodiment of the present invention, the master block can generate the paging information by extracting only the portion corresponding to the change data in the paging request message.

In the paging processing apparatus according to an embodiment of the present invention, the interworking block may include unique information of a user terminal, an index of unique information of the user terminal, or a connected mode discontinuous reception (CDRX) The encoded encoding paging information can be changed by extracting the parameters.

In the paging processing apparatus according to an embodiment of the present invention, the interworking block analyzes paging information transmitted to the plurality of base stations to determine similarity between paging information transmitted to the plurality of base stations, and based on the similarity, And generating an encoding paging information corresponding to the group using a common portion of paging information transmitted to each of the base stations in the group.

In the paging processing apparatus according to an embodiment of the present invention, the master block transmits to the interworking block a list of base stations in which the paging information and information on the base station to which paging is to be transmitted is set, Selects one of the encoding paging information generated by the encoding data management unit, and changes the selected encoding paging information according to the paging information to transmit to the base station corresponding to the base station list.

According to another aspect of the present invention, there is provided a method for generating paging information, the method comprising: generating paging information using information in the paging request message and transmitting the generated paging information to the interworking block, Changing the pre-stored encoding paging information using the received paging information, and transmitting the changed encoding paging information to the plurality of base stations.

The paging processing method according to an embodiment of the present invention includes extracting a common portion through analysis of paging information transmitted to a plurality of base stations connected to the interworking block and generating the encoding paging information using the common portion .

The paging processing method according to an exemplary embodiment of the present invention may further include selecting one or more of the plurality of base stations and grouping them and generating encoding paging information for each group.

In the paging processing method according to an embodiment of the present invention, the transmitting step transmits a base station list in which the base station information to which paging information is to be transmitted in the master block is set, to the interworking block, Selecting one of the generated encoding paging information for each group based on the generated encoding paging information, and modifying the selected encoding paging information using the paging information.

The present invention pre-generates pre-encoded data based on similarity of each paging request information transmitted to a plurality of eNodeBs, updates pre-encoded data with paging information received from a master block, and processes the paging using the updated pre- There is an effect that the load of the system (for example, MME) generated at the time of encoding can be reduced.

1 is a block diagram of a mobile communication system suitable for a paging processing apparatus for mobile communication according to the present invention;
2 is a block diagram of a paging processing apparatus for mobile communications according to the present invention;
3 is a diagram illustrating the structure of pre-encoded data applied to an embodiment of the present invention;
4 is a flowchart showing a paging process according to an embodiment of the present invention;
5 is a flowchart showing a paging process 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 system suitable for a paging processing apparatus for mobile communication according to the present invention. The mobile communication system includes an eNodeB 102, a SGW 104, a PGW (PDN Gateway) 106, Charging Rule Function 108, Mobility Management Entity (MME) 110 and Home Subscriber Server (HSS) 112, and the like.

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, and the like.

In addition, the eNodeB 102 can guarantee a stable connection with a plurality of terminal devices, receives a paging signal for paging a data call, i.e., paging request information from the MME 110, Lt; / RTI >

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.

In addition, the SGW 104 may generate a Downlink Data Notification (DDN) message according to the reception of the downlink data, and may forward the message to the MME 110.

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 .

Meanwhile, the MME 110 is a node that manages the 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.

Such MME 110 may comprise substantially the paging device of the present invention (200 of FIG. 2), for example, as shown in FIG. 2, Specific contents for controlling the load will be described in detail later 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 paging processing technique of the present invention suitable for application to a mobile communication system having the above-described configuration will be described in detail.

Prior to the description, the paging procedure generates encoded data using the information in the paging request message when a paging request message is received, and transmits the generated encoded data to a plurality of eNodeBs 102 connected to the MME 110 And processes the paging request message. Here, data transmitted to a plurality of eNodeBs 102 are mostly similar. In an embodiment of the present invention, pre-encoded data is generated in advance based on the similarity, and then, when a paging request message is received, pre-encoded data is used And processes the paging request.

FIG. 2 is a block diagram of a paging processing apparatus 200 for mobile communication according to the present invention, and may include a master block 210 and an interlocking block 220.

Referring to FIG. 2, the master block 210 receives a paging request message, for example, a DDN (Downlink Data Notification) message, processes the received paging request message, Deliver the request. That is, when an event triggered from the DDN message is generated, the master block 210 transmits the corresponding event to the interworking block 220 to process the paging request.

The master block 210 transmits the base station list to the interworking block 220 in addition to the paging information in the paging request processing. The master block 210 extracts only the portion corresponding to the change data in the paging request message, Process the request. Here, the change data is a part of the encoded data in the interworking block 220 that is changed during the paging information processing. For example, the change data includes unique information (e.g., ID, IMSI, etc.) (Connected mode Discontinuous Reception, hereinafter referred to as 'CDRX') parameter, but the present invention is not limited thereto.

Meanwhile, the base station list transmitted from the master block 210 is eNodeB information to which the interworking block 220 transmits paging information.

That is, the master block 210 extracts the unique information of the user terminal, the index of unique information, the CDRX parameter, and the like in the paging request message, and then generates paging information and transmits the generated paging information to the interworking block 220.

The interworking block 220 manages the pre-encoded data generated based on the common information of the paging message transmitted to the plurality of eNodeBs 102 connected to the MME 110. When the paging information is received from the master block 210 And then updates a specific portion of the pre-encoded data and processes the paging request using the updated pre-encoded data. 2, the interworking block 220 may include a pre-encoding data management unit 222, a paging update unit 224, a paging processing unit 226, and the like.

The pre-encoding data management unit 222 generates and manages pre-encoded data. In particular, the pre-encoding data management unit 222 analyzes paging messages transmitted by a plurality of eNodeBs 102 connected to the interworking block 220, Encoded to generate pre-encoded data, and the generated pre-encoded data may be stored in a separate storage medium (not shown).

On the other hand, the pre-encoding data management unit 222 determines the similarity between the plurality of eNodeBs 102, groups the plurality of eNodeBs based on the similarity, and then uses the common portion of the paging message transmitted to each eNodeB 102 in the group Thereby generating pre-encoded data corresponding to the group. In this way, pre-encoding data corresponding to each group can be generated and managed.

The pre-encoding data may be composed of an encoding part 300 encoding a common part and an insertion part 310 into which data is inserted, as shown in FIG.

The pre-encoded data is stored in a separate storage medium (not shown) and is managed by the pre-encoded data management unit 222.

The paging update unit 224 extracts the change data to be inserted into the insert part 310 of the pre-encoded data from the paging information provided from the master block 210, inserts the extracted change data into the insert part 310, The encoded data can be updated.

The paging processor 226 may transmit the updated pre-encoded data to a plurality of eNodeBs 102 connected to the interworking block 220 to process the paging request.

Meanwhile, the paging processor 226 can process the paging request by transmitting the updated pre-encoded data only to the eNodeB 102 corresponding to the base station list.

In addition, when there are a plurality of pre-encoded data, the paging update unit 224 may select the pre-encoded data based on the base station list and update the selected pre-encoded data using the change data extracted from the paging information.

In the embodiment of the present invention, the master block 210 generates paging information, i.e., information including the change data. However, the change data may be extracted in the interlocking block 220. That is, when the paging request message is received, the master block 210 provides the paging request message to the interworking block 220, and the interworking block 220 can extract the change data from the paging request message.

As described above, the pre-encoding data is generated in advance based on the similarity of each paging request information transmitted to the plurality of eNodeBs, the pre-encoded data is updated with the paging information received from the master block 210, By processing the paging, the load of the system (e.g., MME) that occurs during encoding can be reduced.

Next, a series of processes for controlling the load of the system through the paging device of the present invention having the above-described configuration will be described in detail.

[Example 1]

4 is a flowchart illustrating a paging process according to an exemplary embodiment of the present invention.

Referring to FIG. 4, when the mobile communication system is in the service mode, the master block 210 in the MME 110 receives a paging request message (step 402).

Then, the master block 210 extracts the change data corresponding to the changed part in the paging request message to generate paging information (step 404), and transmits the generated paging information to the interlocking block 220 (step 406).

The paging update unit 224 of the interworking block 220 updates the pre-encoded data managed by the pre-encoding data management unit 222 using the change data in the paging information (step 408).

The paging processor 226 then transmits the updated pre-encoded data to the eNodeB 102 connected to the interworking block 220 (step 410) to complete the paging procedure.

Accordingly, in the paging processing method according to the embodiment of the present invention, when the paging request message is received after pre-encoding data is generated in advance, data for paging is generated by inserting only the changed portion into the pre- The load on the system can be reduced.

[Example 2]

5 is a flowchart illustrating a paging process according to another embodiment of the present invention.

Referring to FIG. 5, when the mobile communication system is in the service mode, the master block 210 in the MME 110 receives a paging request message (step 502).

Then, the master block 210 extracts the change data corresponding to the changed part in the paging request message to generate paging information (step 504), and transmits the generated paging information and the base station list to the interworking block 220 506).

The paging update unit 224 of the interworking block 220 requests the pre-encoding data management unit 222 to pre-encode data corresponding to the base station list. Accordingly, the pre-encoding data management unit 222 pre- And provides the data to the paging update unit 224 (step 508).

Thereafter, the paging update unit 224 updates the pre-encoding data provided from the pre-encoding data management unit 222 using the change data in the paging information (step 510).

The paging processor 226 then selects the eNodeB 102 corresponding to the base station list from the plurality of eNodeBs 102 connected to the interworking block 220 and transmits the updated preencoded data to the selected eNodeB 102 Step 512) to complete the paging procedure.

Accordingly, in the paging processing method according to another embodiment of the present invention, the paging request is processed using the pre-encoded data in the same manner as in the first embodiment described above, thereby minimizing the system resources required for encoding, have.

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.

200: Paging device 210: Master block
220: Interlocking block 222: Pre-encoding data manager
224: Paging update unit 226: Paging processor

Claims (9)

A master block for generating and transmitting paging information based on the paging request message when the paging request message is received,
And an interworking block for changing the pre-stored encoding paging information according to the paging information and transmitting the changed encoding paging information to a plurality of base stations
A paging processing device for mobile communication. The method according to claim 1,
The master block includes:
Extracts only the portion corresponding to the change data in the paging request message and generates the paging information
A paging processing device for mobile communication. The method according to claim 1,
Wherein the interlocking block comprises:
Extracts the unique information of the user terminal, the index of the unique information of the user terminal, or the connected mode discontinuous reception (CDRX) parameter in the paging information and changes the stored encoding paging information
A paging processing device for mobile communication. The method according to claim 1,
Wherein the interlocking block comprises:
The method of claim 1, further comprising: analyzing paging information transmitted to the plurality of base stations to determine similarity between paging information transmitted to the at least one base station; grouping the base stations based on the similarity; And an encoding data management unit for generating encoding paging information corresponding to the group using a part
A paging processing device for mobile communication. 5. The method of claim 4,
Wherein the master block transmits to the interworking block a base station list in which the paging information and information on a base station to which paging is to be transmitted is set,
The interworking block selects one of the encoding paging information generated by the encoding data management unit based on the base station list and changes the selected encoding paging information according to the paging information to transmit to the base station corresponding to the base station list Transmitting
A paging processing device for mobile communication. Generating paging information using the information in the paging request message and transmitting the generated paging information to the interworking block when the paging request message is received in the master block,
Changing the encoding paging information stored in the interlocking block using the transmitted paging information;
And transmitting the changed encoding paging information to the plurality of base stations
Paging processing method for mobile communication The method according to claim 6,
The above-
Extracting a common portion through analysis of paging information transmitted to a plurality of base stations connected to the interworking block, and generating the encoding paging information using the common portion
Paging processing method for mobile communication. The method according to claim 6,
The above-
Selecting and grouping one or more of the plurality of base stations, and generating encoding paging information for each group
Paging processing method for mobile communication. 9. The method of claim 8,
Wherein the transmitting step transmits a base station list in which the base station information to which paging information is to be transmitted in the master block is set to the interworking block,
Wherein the modifying comprises:
Selecting one of the generated encoding paging information for each group based on the base station list;
And modifying the selected encoding paging information using the paging information
Paging processing method for mobile communication.

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