KR100705493B1 - Apparatus and method for cotrolling quality of service in muti-cell network systems - Google Patents

Abstract

The present invention relates to an apparatus and method for controlling quality of service information in a multi-cell environment.

The present invention is characterized by controlling service quality information by comprehensively determining traffic characteristics, mobile communication system characteristics, traffic processing capacity, and usage status of radio resources using a service quality information control apparatus in a multi-cell environment.

According to the present invention, in order to efficiently process service quality information of multimedia traffic in a multi-cell environment, a user needs by controlling service quality information by comprehensively determining characteristics of a mobile communication system, traffic characteristics, and usage of radio resources. The effect of improving the quality of service can be expected.

Multi-Cell Environment, Quality of Service (QoS), Traffic Service

Description

Apparatus and Method for Cotrolling Quality of Service in Muti-Cell Network Systems}

1 is a diagram schematically illustrating a mobile communication system in a multi-cell environment according to an embodiment of the present invention.

2 is a block diagram schematically illustrating an internal configuration of an apparatus for controlling quality of service information formed in an access station according to an exemplary embodiment of the present invention.

3 is a flowchart briefly illustrating a method for controlling service quality information according to an exemplary embodiment of the present invention.

The present invention relates to an apparatus and method for controlling service quality information in a multi-cell environment, and more particularly, to an apparatus and method for improving communication quality of service by controlling service quality information in a mobile communication system.

The existing mobile communication system provided a low speed data service mainly for voice service. In next generation mobile communication systems, various multimedia services such as real-time traffic such as data and video, and non-real-time traffic such as data transmission, web server, and email are mainstream.

Therefore, a mobile communication system that provides a multimedia service should consider quality of service (QoS) as an important factor in designing packet processing capability, transmission delay, accuracy, and reliability.

In the conventional single system environment, there is a method of uniformly providing service quality information as set and a method of controlling service quality information by determining the priority of a service according to a communication state such as traffic congestion of a mobile communication system.

In the next generation mobile communication system, it will be constructed as an overlapping multi-cell environment, and the user should be provided with service quality information of various services according to tastes or characteristics of the system.

In a multi-cell environment system that provides various traffics, the cell environment is complex, so that interference by adjacent cells frequently occurs, and the cell environment should be designed so that such interference does not occur.

In addition, in a system of a multi-cell environment, unnecessary handover may be caused by independent signal reception, which may cause a deterioration of a communication system by acting as an overhead of signaling.

In general, a small amount of packet loss is not a big problem in the communication system for delivering packetized voice information. However, in case of a data service, the communication system may have a serious effect.

Data services that do not allow errors in file transfers require file retransmissions to correct errors, which can lead to a drop in the transfer rate, making error recovery impossible.

Unlike a single network system, in a multi-cell system, in order to efficiently manage service quality information of multimedia services having various properties, the system may not be able to provide the service quality information required by the user without controlling the service quality information according to the service characteristics. Can't.

Therefore, in a multi-cell system, when a system that guarantees quality of service information is selected, a method of providing a service quality information by accessing a cell of the nearest communication system used in a single network system is provided. Quality information will not be provided.

In order to solve the above problems, an object of the present invention is to provide a service quality information control apparatus and method for improving the service quality by controlling the service quality information of multimedia traffic in a multi-cell environment.

The service quality information control apparatus for improving the communication service quality by controlling the service quality information according to an aspect of the present invention for achieving the technical problem, there is a mobile communication system in the region range to ensure the service quality information A controller configured to determine characteristics of the mobile communication systems and to calculate importance information for selecting a mobile communication system that guarantees the requested service quality information; A system determination unit that determines a mobile communication system that guarantees the requested quality of service information by using the calculated importance information; A traffic processor configured to process a traffic service according to traffic characteristics when a system for determining a mobile communication system that guarantees the requested quality of service information is determined by the system determiner; And a readjustment unit configured to generate a readjustment request message including a system parameter that guarantees the requested quality of service information using the calculated importance information, and transmits the readjustment request message to the control unit when the mobile communication system cannot be determined by the system determiner. Include.

According to another aspect of the present invention, a method for controlling service quality information by controlling quality of service information to improve communication quality of service includes: (a) When receiving a traffic service request signal from the outside, the service quality information control method includes: Inspecting and determining whether a mobile communication system for processing the service quality information exists; (b) determining that the mobile communication system guarantees the requested quality of service information by determining characteristics of the mobile communication systems when it is determined in step (a) that the mobile communication system exists; And (c) processing the traffic service according to the characteristics of the multimedia traffic when the mobile communication system which guarantees the requested quality of service information is determined.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

In addition, when a part is said to "include" a certain component, this means that it may further include other components, except to exclude other components unless otherwise stated.

An apparatus and method for controlling service quality information in a multi-cell environment according to an embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

1 is a diagram schematically illustrating a mobile communication system in a multi-cell environment according to an embodiment of the present invention.

The access station (AS) 100 is responsible for signal control and traffic control, and controls messages for setting / releasing services provided between the terminal and the Internet core network.

The access station 100 controls resource allocation, release, and authentication functions for each access station 100.

The local access management (LAM) 110 performs some of the functions of an Internet multimedia server, which performs core network authentication and session and resource management functions. Here, the core network is a high-speed backbone network of a large communication network capable of large-capacity, long-distance voice and data services, and refers to a general telephone switching network, a comprehensive information communication network, a wide area communication network, a comprehensive cable broadcasting, and the like.

In general, a system can be classified into a terminal and an access network, and a network to which the access network is connected is called a core network.

Here, the Internet multimedia server refers to a server located in the core network and providing content information such as a multimedia service through the Internet.

Accordingly, the local access management 110 provides an efficient processing scheme for the high-speed mobile multimedia structure by designing a distributed structure by sharing the functions of the access station 100.

In addition, the access station 100 transmits the reverse data coming from the terminal to the Internet network, the core network (Core Network) through the router 130, and sends the forward data coming from the Internet network, the core network to the terminal Do it.

When the mobile communication system concentrates all functions on the core network, the session can be established only through the Internet multimedia server when setting up all the sessions, which incurs a load on the message processing, which causes a great problem in performance.

In the hierarchical distributed structure according to the embodiment of the present invention, the local access management 110 basically performs authentication and encryption functions.

All session settings are designed to be authenticated by the local access management 110, and are designed to authenticate at the authentication center of the core network only when the subnet is a handover between different systems.

In this hierarchical distributed structure, signaling overhead of a communication system can be reduced, and session control time can be greatly reduced.

The local access management 110 is a subsystem that manages the resources of the entire access station 100 in the same subnet, and is in charge of managing and maintaining an operational state of the access station 100.

The local access management 110 transmits the information about the initialization and the system shape at the start-up of the communication system to each subsystem through the access station 100, collects the state information transmitted from each subsystem, and collects the information. Performs various diagnostic functions by searching status information.

Global Access Management (GAM) 120 is a subsystem that manages the resources of the entire access station 100 included in different subnets, and is in charge of managing and maintaining operating states of the access station 100. .

The integrated access management 120 transmits the information about the subnet system initialization and the information about the system shape to each subsystem through the router 130, collects state information from each subsystem, and performs various diagnostic functions.

The integrated access management 120 manages the Internet protocol of the terminal and the access station 100 and ensures mobility when handover occurs between different subnet routers 130 in the Internet network, and provides mobile IP. It plays a role of performing handover and replaces the existing home agent role.

Integrated access management 120 serves to verify the authentication (Authorization) of the terminal in addition to the function of handling the authentication (Authentication) of the terminal, and to handle the accounting (Accounting) of each terminal.

The router 130 manages the Internet protocol (IP) of terminals generated in the same subnet by interworking with the local access manager 110 as a router 130 of one subnet unit and guarantees mobility. In charge of the function.

The home subscriber system (HSS) 140 performs a function of managing a profile for a subscriber.

Dynamic Host Configuration Protocol (DHCP) 150 serves to dynamically create, assign, and release Internet protocols.

Domain Name System 160 is a block that converts a domain name into an address.

Quality of Service (QoS) control method according to an embodiment of the present invention to efficiently control traffic generated between the access system 100 between the access stations 100 of the same subnet or between different subnet routers 130 and In order to guarantee the communication quality of traffic service by sharing limited radio resources.

Hereinafter, an apparatus for controlling service quality information of an access station 100 for guaranteeing service communication quality according to an embodiment of the present invention will be described in detail with reference to FIG. 2.

2 is a block diagram schematically illustrating an internal configuration of an apparatus for controlling quality of service information formed in an access station 100 according to an exemplary embodiment of the present invention.

The apparatus for controlling quality of service information according to the embodiment of the present invention includes a controller 200, a system determiner 210, a traffic processor 220, and a readjuster 230.

When the traffic service request signal is transmitted, the controller 200 determines whether there is a mobile communication system capable of processing the required service quality information by checking a region range capable of guaranteeing service quality information.

The controller 200 comprehensively understands the communication system characteristics including the traffic processing capacity, the radio resource usage status, the service quality information characteristics, and the traffic service characteristics, and provides the importance information for selecting a mobile communication system that guarantees the service quality. Calculate.

Here, the importance information is a parameter that comprehensively considers traffic service characteristics, characteristics of system service quality information, traffic processing capacity, and usage state of radio resources.

The system determination unit 210 determines an optimal mobile communication system that can guarantee the service quality information requested by the user using the importance information calculated by the control unit 200, and generates a system determination information success signal accordingly. It transmits to the traffic processing unit 220.

When the traffic processor 220 receives the system decision information success signal from the system determiner 210, the traffic processor 220 processes a suitable traffic service according to traffic characteristics (real-time traffic, non-real-time traffic).

If the system determiner 210 determines that the optimal mobile communication system has not been determined, the system determiner 210 generates a system decision information failure signal and transmits it to the readjustment unit 230.

When the readjustment unit 230 receives the system decision information failure signal from the system decision unit 210, the readjustment request including the optimized system parameter that can guarantee the service quality information requested by the user using the calculated importance information A message is generated and transmitted to the controller 200.

When the control unit 200 receives the readjustment request message from the readjustment unit 230, the control unit 200 uses the optimized system parameters included in the readjustment request message to readjust the importance for selecting the mobile communication system that can guarantee the quality of service. The information is calculated and transmitted to the system decision unit 210.

The system determiner 210 determines a second mobile communication system capable of providing lane reconditioned service quality information by using the readjusted importance information received from the controller 200.

Hereinafter, a method of controlling service quality information of the access station 100 for guaranteeing service communication quality according to an embodiment of the present invention will be described in detail with reference to FIG. 3.

3 is a flowchart briefly illustrating a method for controlling service quality information according to an exemplary embodiment of the present invention.

When the control unit 200 of the service quality information control apparatus receives a traffic service request signal for requesting traffic processing (S100), the controller 200 processes the requested service quality information by checking a region range capable of guaranteeing the required service quality information. It is determined whether there is a mobile communication system that can be performed (S102).

When the control unit 200 of the apparatus for controlling quality of service information determines that a mobile communication system capable of processing the quality of service information requested in step S102 exists, the controller 200 may determine a processing capacity of a system to which traffic is connected, a state of use of radio resources, and the like. Comprehensively, the importance information for selecting the mobile communication system that can guarantee the service quality information is calculated.

The system determination unit 210 of the service quality information control device determines the mobile communication system capable of guaranteeing the service quality information requested by the user by receiving the importance information calculated from the control unit 200 (S104).

If it is determined in step S102 that there is no mobile communication system capable of processing the requested quality of service information, the determination unit of the service quality information control device ends the required traffic service performance (S106).

When the traffic processing unit 220 of the service quality information control device determines that a mobile communication system capable of guaranteeing service quality information requested by a user is determined in step S104, characteristics of multimedia traffic (real-time traffic, non-real-time traffic, etc.) Process the traffic service suitable for (S108).

If it is determined in step S104 that the mobile communication system capable of guaranteeing the service quality information requested by the user is determined, the readjustment unit 230 of the service quality information control apparatus may guarantee the service quality information requested by the user. A readjustment request message including an optimized system parameter is generated and transmitted to the control unit 200 (S110).

When the control unit 200 of the apparatus for controlling the quality of service information receives a readjustment request message for rescheduling the quality of service information, the control unit 200 moves to guarantee the quality of service using an optimized system parameter included in the readjustment request message. The readjusted importance information for selecting a communication system is calculated and transmitted to the system determination unit 210.

The system determiner 210 of the apparatus for controlling service quality information determines a second mobile communication system capable of providing lane reconditioned service quality information by using the readjusted importance information received from the controller 200 (S112). .

That is, the control unit 200 performs a rebalancing algorithm for guaranteeing the re-adjusted service quality information of the lane to comprehensively analyze the traffic characteristics, the system characteristics for processing the traffic, the processing capacity of the system to which the traffic is connected, the state of use of radio resources, and the like. Determine and determine the mobile communication system that can guarantee the final readjusted service quality information.

The control process of such quality of service information is repeatedly performed until it is possible to determine an optimized system that guarantees readjusted quality of service information and guarantee the required quality of service information.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

In accordance with the above-described configuration, the present invention comprehensively determines characteristics of a mobile communication system, traffic characteristics, usage status of radio resources, etc. in order to efficiently process service quality information of multimedia traffic in a multi-cell environment. By controlling this, it is possible to expect the effect of improving the quality of service required by the user.

Claims (7)

A service quality information control device for controlling communication quality information to improve communication service quality, A control unit that has a mobile communication system within a region range that guarantees the service quality information, and calculates importance information for selecting a mobile communication system that guarantees the requested service quality information by identifying characteristics of the mobile communication systems; A system determination unit that determines a mobile communication system that guarantees the requested quality of service information by using the calculated importance information; A traffic processor configured to process a traffic service according to traffic characteristics when a system for determining a mobile communication system that guarantees the requested quality of service information is determined by the system determiner; And If the mobile communication system is not determined by the system determination unit, the readjustment unit generates a readjustment request message including a system parameter that guarantees the requested quality of service information using the calculated importance information and sends the readjustment request message to the control unit. Service quality information control device comprising a. The method of claim 1, The characteristic of the mobile communication system includes at least one of a traffic service characteristic, a traffic processing capacity, a usage state of a radio resource, and a quality of service information information. The method of claim 1, When the control unit receives the readjustment request message, the controller calculates readjusted importance information for selecting a second mobile communication system that guarantees the requested quality of service information by using the system parameter included in the readjustment request message. And transmit the information to the system decision unit. The method of claim 3, wherein And the system determining unit determines the second mobile communication system that provides the next reconditioned service quality information by using the readjusted importance information. In the service quality information control method for improving the communication service quality by controlling the service quality information, (a) when receiving a traffic service request signal from the outside, determining whether a mobile communication system for processing the service quality information exists by inspecting an area range for guaranteeing the service quality information; (b) determining that the mobile communication system guarantees the requested quality of service information by determining characteristics of the mobile communication systems when it is determined in step (a) that the mobile communication system exists; And (c) processing the traffic service according to the characteristics of the multimedia traffic when the mobile communication system which guarantees the requested quality of service information is determined; Service quality information control method comprising a. The method of claim 5, wherein in step (b), (b1) generating and transmitting a readjustment request message including a system parameter for guaranteeing the requested quality of service information when it is determined that the mobile communication system for guaranteeing the requested quality of service information has not been determined; (b2) calculating and transmitting readjusted importance information for selecting a second mobile communication system that guarantees the requested quality of service information by using the system parameter included in the readjustment request message; And (b3) determining the second mobile communication system that provides suboptimal service quality information using the readjusted importance information; Service quality information control method comprising a. The method of claim 5, wherein in step (a), If it is determined that there is no mobile communication system for processing the quality of service information, stopping the processing of the requested traffic service.

Images