KR100606208B1 - A method for managing the Session Channel for Multi Session in Mobile Terminal - Google Patents

Abstract

The present invention relates to a method for managing a session channel for a multi-session according to a service class using session quality of service (QoS) information in a mobile terminal of a next generation mobile communication system. A method for managing a session channel of a mobile terminal according to the present invention includes: a) analyzing service quality information of a session when a service is requested to a session controller of the mobile terminal; b) determining, by the session controller, whether there is a session already established according to the analyzed session quality of service information; c) modifying an existing session or allocating a new session according to the existence of the session; d) comparing whether the capacity of the session channel currently assigned to the mobile terminal can be accommodated; e) if the session channel capacity is not sufficient, comparing service priorities, thereby releasing the lower priority session and establishing a new session; And f) if the session channel capacity is sufficient, providing a service for which a new session is established. According to the present invention, by comparing the session quality of service information and reusing an existing session, it is possible to efficiently use the scarce radio resources commonly used by various services, and also prioritize according to the service characteristics required by the mobile terminal. Can provide quality guaranteed services.

Next Generation Mobile, Multi Session, Session Channel, QoS, Priority

Description

A method for managing the session channel for multi session in mobile terminal}

1 is a diagram illustrating a mobile terminal configuration of a next generation mobile communication system according to an embodiment of the present invention.

2 is a flowchart illustrating a method of managing a session channel for a multi-session for each service class according to an exemplary embodiment of the present invention.

The present invention relates to a session channel management method of a mobile terminal, and more particularly, to a multi-session according to a service class using session quality of service (QoS) information in a mobile terminal of a next generation (4G) mobile communication system. It relates to a method for managing a session channel for.

The next-generation mobile communication system will move to anywhere and anytime to satisfy users with various high-definition video and high-quality music contents according to the desire of mobile terminal users to receive various multimedia services by accelerating complex technology evolution. It is to provide.

In order to provide such a high speed multimedia service, a packet-based method used only when radio resources are required is used.

Next-generation mobile communication systems provide services in a conversational class, a streaming class, an interactive class, and a background class.

The conversational class is a class corresponding to a real-time service, such as voice over IP (VoIP) or video, which requires fixed bandwidth allocation in a network such as constant bit rate (CBR) in ATM. It offers video telephony and the like, and the Streaming class provides applications such as Video on Demand (VoD) and Streaming Audio.

The typical application in the interactive class is e-commerce or web browsing, which is a type of service that requires a high throughput rather than a delay in delivery. In the background class, a background download of e-mail is used. Include applications such as file transfers.

In order to provide such various applications, each session must be set for each application. Here, a session is a logical connection for dialogue between users or computers in a network environment. For example, two sessions are required to provide voice over IP and video telephony.

However, the conventional session establishment method has a problem in that the session channel, which is a radio resource, cannot be efficiently used by using different sessions with the same service class.

An object of the present invention for solving the above problems is to multi-session using quality of service (QoS) parameters in order to efficiently use the scarce radio resources in the packet-based next generation mobile communication system and to provide one or more multimedia services. It is to provide a session channel management method of a mobile terminal for managing a channel.

Another object of the present invention is to provide a method for managing a session channel of a mobile terminal capable of providing a quality guaranteed service by assigning a priority according to a service characteristic required by the mobile terminal.

As a means for achieving the above object, the session channel management method of a mobile terminal according to the present invention,

A method for managing a session channel for a multi-session according to a service class in a mobile terminal of a next generation mobile communication system,

a) analyzing service quality of service (QoS) information when a service is requested to the session controller of the mobile terminal;

b) determining, by the session controller, whether there is a session already established according to the analyzed session quality of service (QoS) information;

c) modifying an existing session or allocating a new session according to the existence of the session;

d) comparing whether the capacity of the session channel currently assigned to the mobile terminal can be accommodated;

e) comparing service priorities if the session channel capacity is not sufficient, releasing sessions of low priority and establishing a new session accordingly; And

f) if the session channel capacity is sufficient, providing a service with a new session established;

There is a feature consisting of.

Therefore, according to the present invention, when providing a high-speed multimedia service in a packet-based next generation mobile communication system, when the mobile terminal requests a service with different session quality of service (QoS) information for each service class, the session quality of service ( By comparing QoS) information and reusing existing sessions, it is possible to efficiently use scarce radio resources commonly used by various services, and to ensure quality by assigning priorities according to service characteristics required by mobile terminals. Can provide services.

Hereinafter, a session channel management method of a mobile terminal according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

An embodiment of the present invention provides a method for managing a multi-session using session quality of service (QoS) information and considering session channel availability as a radio resource in a next generation mobile communication system. In particular, the service in the mobile terminal of the next generation mobile communication system that manages the session control (SC) of the terminal in consideration of the availability of the session channel, which is a radio resource, using session quality of service (QoS) information in the next generation (4G) mobile communication system It provides a method of managing a session channel for a multi-session according to the class.

First, a mobile terminal of a next generation mobile communication system according to an embodiment of the present invention will be described with reference to FIG. 1, and a method of managing a multi-session according to a service class of the mobile terminal will be described with reference to FIG. 2.

1 is a diagram illustrating a mobile terminal configuration of a next generation mobile communication system according to an exemplary embodiment of the present invention, and illustrates a terminal configuration of a packet based next generation mobile communication system.

Referring to FIG. 1, a next generation mobile communication system includes a mobile terminal (MT) 100, an access network (AN) 300, and a core network (CN) 200. In addition, it may include a SIP phone 400 connected to the Internet network, such as IPv4 (Internet Protocol Version 4) and IPv6 (Internet Protocol Version 6).

First, the radio resource used in the next generation mobile communication system uses a packet-based switching scheme commonly used by various services. The mobile terminal unit 100, which is one of the components of the next generation mobile communication system, includes, for example, a 6.4 inch TFT LCD Window 101, and also includes a 1.1 / 1.2 platform 120 or 1.3 platform 110. It may have a terminal platform of various types, including, has a high-speed wireless interface and multimedia service providing environment for supporting high-speed wireless multimedia services.

The platform of the mobile terminal 100 is composed of 1.3 platform 110 and 1.1 / 1.2 platform 120. The 1.1 / 1.2 platform 120 may include an Ethernet layer 121, a media access control (MAC) / packet data convergence protocol (PDCP) 122, and a physical layer (PHY) 123. In addition, the 1.3 platform 110 includes an Ethernet layer 108, IP (Internet Protocol: 104), Transmission Control Protocol (TCP) / User Diagram Protocol (UDP) 103, and SC / MC (Session Manager) 106. , APP / AIP (Application Interface Programming) 102, User Interface (UI) 105, including RC 107, and also including Session Initiation Protocol (SIP) / MIP (Mobile IP) It may include.

In addition, a session control (SC) 106 that receives and processes a service request through the user interface 105 exists in the 1.3 platform 110 and manages a session through quality of service (QoS) information for each service class. (Create, modify, delete) and manage session channel for multi session.

Since the embodiment of the present invention is for explaining the session channel management method of the mobile terminal, the 1.3 platform 110, or 1.1 / 1.2 platform 120 described above in addition to the session controller 106 associated with the session channel management method of the mobile terminal. Detailed description of the other components of will be omitted.

Referring back to FIG. 1, the access network 300 of the next generation mobile system may have a plurality of access systems (AS) 310, 320, and the plurality of access systems 310, 320 may have one access. It has a structure managed by the network local system (AN Local System; ALS) (330). An access network local system (AN Local System; ALS) 330 serves to manage the services required by the terminals in the next generation mobile system.

Here, the base network 200 includes a SIP (Session Initiation Protocol; SIP) server 210, AAA (Authentication Authorization Accounting); secure and reliable authentication (Authentication) for the subscriber in the wired and wireless mobile Internet environment (authentication) Authorization) and the next generation solution based on Diameter protocol (220) that provides accounting services (220), FA (Foreign Agent) (230) and HA (Home Agent) 240 consists of the MIP and SIP (102) It may be made of a supporting structure.

A method of managing a multi-session according to a service class of a mobile terminal according to an embodiment of the present invention will be described with reference to FIG. 2 from the terminal configuration in the packet-based next generation mobile communication system configured as described above.

2 is a flowchart illustrating a method of managing a session channel for a multi-session for each service class according to an exemplary embodiment of the present invention.

Referring to FIG. 2, first, a service request is made to the session controller 106 in order to execute a multimedia service in a user mobile terminal (S601). The service may be a conversational class, a streaming class, an interactive class, or a background class provided in a next generation mobile communication system.

Next, if there is a service request, the session controller 106 analyzes and confirms the quality of service (QoS) information (S602), and compares the quality of service (QoS) information of the previously assigned session (603). The session controller 106 receives and processes a service request through a user interface, creates, modifies, and deletes a session through quality of service (QoS) information for each service class, and manages a session channel for a multi-session.

Next, when there is no previously allocated session, that is, as an initial session establishment step, a process of storing and managing requested session quality of service (QoS) information in a database and receiving a new session is performed (S604). .

At this time, if there is an allocated session corresponding to the existing service, the requested session quality of service (QoS) information is compared with the existing session quality of service (QoS) information (S605).

 Next, if the information does not match the existing session, a new service is considered as a new session (S604).

Next, if the session matches the existing session, the session session quality is modified by modifying the existing session quality of service (QoS) information with newly requested session quality of service (QoS) information (S607).

Next, in the process of modifying an existing session or establishing a new session, session quality of service (QoS) information for each service is stored in a database, and it is determined whether the session channel capacity currently allocated to the terminal is acceptable (S608). ).

If the session channel capacity is not acceptable, the priority of sessions to be requested and sessions that have not been used for a predetermined period of time among existing established sessions is checked (S609).

Next, if there is a session lower than the priority of the current request session among the sessions which are not used for a predetermined period by comparing the priority, the existing session having a lower priority is released (S610).

That is, the service class is distinguished based on the quality of service (QoS) information received through the service request of the mobile terminal user of the next generation mobile communication system, and if the service class (QoS) information corresponding to the already assigned service class is different, Modify session information of service class, and if there is no service class, establish new session, and request new service or compare priority with existing service by checking available value of session channel before requesting service. Done.

In the released state, the process checks whether the session channel is acceptable through step S608.

If it is not possible to accept the session channel, the steps S609 and S610 are repeated again. If the capacity of the session channel is acceptable, service registration is made to a new session or an existing session is modified (S611).

In addition, when the service class is the same and the required session quality of service (QoS) is different, the session set for the existing service class is modified, and when the service class is different, a new session is set. To this end, existing session quality of service (QoS) information for each service class is managed in the database.

In an embodiment of the present invention, when an additional service request is received, it is compared with a service for an existing session, and when a new session is requested or when an existing session configuration needs to be modified, the availability of a session channel, which is a radio resource, is checked. If it is not acceptable, it compares the priority of the new service and the existing service that has not been used for a certain period of time and releases the session with the lower priority service to increase the session quality of service (QoS). It becomes possible.

As a result, an embodiment of the present invention is a method for managing a channel for multi-session according to a service class in a next-generation mobile communication system, and provides a high-speed multimedia service in a packet-based next-generation mobile communication system. When a UE requests a service with different session quality of service (QoS) information for each service class, the resource allocation range varies for each service class, and a new service is not used for a certain period of time in order to efficiently use a limited resource. By resetting the session by comparing the priority of the session with the newly requested session, it is possible to guarantee the stability of resource utilization in the wireless section and to provide the user with an improved quality of service.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes can be made in the art without departing from the technical spirit of the present invention. It is obvious to one with ordinary knowledge.

 According to the present invention, when providing a high-speed multimedia service in a packet-based next generation mobile communication system, when the mobile terminal requests a service with different session quality of service (QoS) information for each service class, the session quality of service (QoS) By comparing the information and reusing the existing session, it is possible to efficiently use the scarce radio resources commonly used by various services, and to give priority to the service characteristics required by the mobile terminal, thereby ensuring the quality of the service. Can provide.

Claims (10)

A method for managing a session channel for a multi-session according to a service class in a mobile terminal of a next generation mobile communication system, a) analyzing service quality of service (QoS) information when a service is requested to the session controller of the mobile terminal; b) determining, by the session controller, whether there is a session already established according to the analyzed session quality of service (QoS) information; c) modifying an existing session or allocating a new session according to the existence of the session; d) comparing whether the capacity of the session channel currently assigned to the mobile terminal can be accommodated; e) comparing service priorities if the session channel capacity is not sufficient, releasing sessions of low priority and establishing a new session accordingly; And f) if the session channel capacity is sufficient, providing a service with a new session established; Session channel management method of a mobile terminal comprising a. The method of claim 1, In step e), the session channel capacity of the mobile terminal is released by releasing a session having a lower priority to accept the session channel capacity. The method of claim 2, wherein step e) e-1) if the session channel capacity is not sufficient, comparing priorities of services to be newly requested with sessions that have not been used for a predetermined period of previously allocated sessions; And e-2) if there is a low priority session among existing sessions, releasing the low priority session and establishing a new session; Session channel management method of a mobile terminal comprising a. The method of claim 3, Checking whether the session channel is acceptable again in the state of releasing the low-priority session, and repeating steps e-1) and e-2) if the session channel is not acceptable. Session channel management method. The method of claim 1, In step a), the session controller receives and processes a service request through a user interface in the mobile terminal, manages (creates, modifies, and deletes) a session through quality of service (QoS) information for each service class. Session channel management method of a mobile terminal, characterized in that for managing the session channel. The method of claim 1, The step c), if there is an existing session, comparing the existing session quality of service (QoS) information and the new session quality of service (QoS) information, characterized in that the session channel management method of the mobile terminal. The method of claim 1, In step c), if there is no existing session, a new session is allocated and configured. The method of claim 1, In order to allocate a session channel for each service having different session quality of service (QoS) information, if the service class of the mobile terminal is the same class and the session quality of service (QoS) information is different, modify the session set for the existing service class. Session channel management method of a mobile terminal, characterized in that. The method of claim 1, The session channel management method of the mobile terminal, characterized in that for performing a new session set up process, if the session quality of service (QoS) information is a different class, to allocate a session channel for each different service. The method of claim 1, And session quality of service (QoS) information for each class of service is managed in a database.

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