KR20080105467A - Method and apparatus for supporting quality of service in wireless communication system - Google Patents

Abstract

A method and an apparatus for supporting QoS(Quality of Service) of a wireless communication system are provided to support QoS of a user terminal in a cell boundary zone. An operating method of a base station for supporting QoS of a wireless communication terminal in a cell boundary comprises the steps of: confirming the decline of QoS level in the terminal(501); forming an enhanced service zone for service by which data are simultaneously transmitted to both a neighbor base station and the terminal(505); allocating resources for the simultaneous data transmission service to the terminal(509); and receiving corresponding data from an upper network entity.

Description

METHOD AND APPARATUS FOR SUPPORTING QUALITY OF SERVICE IN WIRELESS COMMUNICATION SYSTEM}

1 is a view for explaining a unicast service type of a terminal in a cell boundary area in a mobile communication system;

FIG. 2 is a diagram for describing QoS support of a specific terminal in a cell boundary area in a mobile communication system; FIG.

3 is a graph showing performance degradation according to distance in a mobile communication system and an advanced service start time according to a required QoS level of a user;

4 is a signal flow diagram for supporting QoS of a specific terminal in a cell boundary area in a mobile communication system according to an embodiment of the present invention;

5 is a flowchart illustrating an operation of a base station for supporting QoS of a terminal in a cell boundary area in a mobile communication system according to an embodiment of the present invention;

6 is a flowchart illustrating an operation of a terminal for supporting QoS in a cell boundary region in a mobile communication system according to an embodiment of the present invention;

7 is a diagram of a base station apparatus for supporting QoS of a terminal in a cell boundary area according to an embodiment of the present invention;

8 is a terminal device for supporting QoS in a cell boundary area in a mobile communication system according to an embodiment of the present invention.

The present invention relates to a method and apparatus for supporting a quality of service (hereinafter referred to as a "QoS") in a mobile communication system. In particular, the present invention relates to an advanced service zone and an advanced service zone. Service (Enhanced Service) The present invention relates to a method and apparatus for supporting QoS of a terminal, wherein the advanced service is an unregulated service provided by a telecommunication service provider and refers to a value-added service other than basic services such as a telephone and a telex. The advanced service zone refers to all cell areas of neighboring base stations for supporting QoS of a specific terminal.

Mobile communication systems have been developed to ensure the mobility of the terminal, and overcome the limitations of the transmission speed to send and receive various information at a high speed. In the mobile communication system, a cell constitutes a service area which is a system by combining several cells in a service area by one base station. The mobile communication system maintains the service seamlessly through handoff when the terminal moves from one cell area to another cell area.

In FIG. 1, a unicast service type of a terminal in a cell boundary area in a mobile communication system will be described.

Referring to FIG. 1, the mobile communication system includes a control station 100, a plurality of base stations 102, 104, and 106, and a plurality of terminals 110, 112, and 114. Depending on the implementation, there may be several control stations and more base stations and terminals in the system, but one control station, three base stations, and three base station cell boundaries in order to facilitate understanding of the present description. An example scenario in which three terminals exist respectively will be described.

Each of the terminals 110, 112, and 114 has a unique identification code, and is used for authentication when accessing the system, and then receives a service through a wireless link. The base stations 102, 104 and 106 exchange signals with the terminals 110, 112 and 114 using a wireless interface. It is in charge of wireless channel setup and handoff processing. In addition, it connects between the terminals (110, 112, 114) and the control station (100). The control station 100 is responsible for mobility management, location registration / management, authentication, handoff, roaming, etc. of the terminal.

Each of the terminals 110 to 114 located in three adjacent cells 116 to 120 is provided with a service from its serving base station when the unicast service is provided. For example, the terminal 110 receives the service in the cell 116 of the serving base station 102 as a high service terminal, and the terminal 112 receives the service in the cell 118 of the serving base station 104. The terminal 114 receives the service in the cell 120 of the serving base station 106. Here, when the location of the terminal is in the boundary region of each cell, the signal strength is weakened as the relative distance from the serving base station is far away, and the reception performance is drastically reduced due to interference due to adjacent cells. In this case, even if three neighboring cells exist and the terminal located in each cell is a terminal requesting advanced service, the unicast service receives the service provision only through the serving base station.

In order to solve this situation, partial frequency reuse (hereinafter referred to as "FFR") and interference cancellation (hereinafter referred to as "IC") methods are considered. However, the method such as the FFR or the IC does not reflect the situation of the terminal that is dynamically changed by statically changing the frequency resource usage of the cell. Therefore, even in unnecessary situations, the base stations attempt to transmit in a complicated pattern.

As described above, in order to improve the QoS of the terminals existing in the existing cell boundary region, the resource usage efficiency may be reduced by allocating the resources of the receiving cell and the neighboring cell fixedly, and all the terminals may use the advanced service. The request may not be made and the state of the terminal may be dynamically changed.

Accordingly, there is a need for a method and apparatus for flexibly supporting QoS of a specific terminal in a cell boundary area in a mobile communication system.

Accordingly, an object of the present invention is to provide a method and apparatus for supporting QoS in a mobile communication system.

Another object of the present invention is to provide a method and apparatus for supporting QoS of a user terminal in a cell boundary area in a mobile communication system.

Another object of the present invention is to provide a method and apparatus for providing a service suitable for a channel environment when a terminal whose QoS level is degraded in a cell boundary area is desired in a mobile communication system.

According to a first aspect of the present invention for achieving the above objects, in the method of operating a base station for supporting a quality of service (QoS) of a terminal in a cell boundary area in a mobile communication system, the QoS level of the terminal Identifying a deterioration; forming an enhanced service zone for a simultaneous data transmission service to neighboring base stations and the terminal when the QoS level decreases; and resources for a simultaneous data transmission service to the terminal; And allocating corresponding data from an upper network entity by using the allocated resource.

According to a second aspect of the present invention for achieving the above object, in the terminal operation method for supporting a Quality of Service (QoS) in the cell boundary region of the mobile communication system, the base station and the QoS level is readjusted or Exchanging a message for modification, receiving MAP information for an advanced service from base stations forming an enhanced service zone according to the QoS level, and transmitting the data from the base stations. Characterized in that it comprises the step of receiving at the same time.

According to a third aspect of the present invention for achieving the above objects, in the base station apparatus for supporting the quality of service (QoS) of the terminal in the cell boundary area in the mobile communication system, the QoS level of the terminal is lowered A QoS negotiation unit for confirming a network, an advanced service control unit for forming an enhanced service zone for simultaneous data transmission service to neighboring base stations and the terminal when the QoS level decreases, and a simultaneous data transmission service to the terminal; And a multicasting control unit for allocating a resource for the resource and an interface unit for receiving corresponding data from an upper network entity using the allocated resource.

According to a fourth aspect of the present invention for achieving the above objects, in a terminal device for supporting a Quality of Service (QoS) in a cell boundary region of a mobile communication system, a base station and a QoS level are readjusted or changed. A QoS negotiation unit for exchanging messages, an advanced service control unit for receiving MAP information for advanced service from base stations forming an enhanced service zone after the QoS level adjustment or change, and the base stations It characterized in that it comprises a control unit for receiving the corresponding data from the same time.

According to a fifth aspect of the present invention for achieving the above objects, in the mobile communication system for supporting the Quality of Service (QoS) of the terminal in the cell boundary region, it is confirmed that the QoS level of the terminal is reduced And, when the QoS level decreases, form an enhanced service zone for simultaneous data transmission service to neighboring base stations and the corresponding terminal, allocate resources for simultaneous data transmission service, and use the allocated resources. Exchanges a message for re-adjusting or changing a QoS level with a base station that receives data from an upper network entity, and receives MAP information for advanced service from base stations forming the advanced service zone according to the QoS level. And a terminal for receiving and simultaneously receiving the data from the base stations. System.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, detailed descriptions of related well-known functions or configurations will be omitted if it is determined that the detailed description of the present invention may unnecessarily obscure the subject matter of the present invention. Terms to be described later are terms defined in consideration of functions in the present invention, and may be changed according to intentions or customs of users or operators. Therefore, the definition should be made based on the contents throughout the specification.

Hereinafter, the present invention forms an advanced service zone in a mobile communication system and then performs a multicasting service to support quality of service (QoS) of a specific terminal in a cell boundary region. A method and apparatus will be described.

FIG. 2 is a diagram for describing QoS support of a specific terminal in a cell boundary area in a broadband wireless communication system. Since the environment of FIG. 2 is the same as that of FIG. 1, that is, the functions of the terminal, the base station, the control station, and the like operate in the same manner, detailed description thereof will be omitted.

Here, in order to perform the detailed operation of the present invention, "the terminal to receive the service performs authentication through an initial registration procedure, etc., and stores / stores the required QoS level information. Assume that an interface between base stations for setting is supported. " The base station also stores a profile that includes the current status of the service subscriber, the required QoS level, service maintenance timer, and the like. The composition of the overall invention is shown in Table 1 below.

User Type Users who exist at cell boundaries but require high-speed data service Transmission Type The service terminal receives data for unicast service or the control station delivers data transmitted for a single terminal to multiple base stations in a multicast transmission method. Data type Multimedia data that requires high speed data such as video streaming Service Initiation DSC-REQ / RSP Message Exchange by Base Station Data transmission Data transmission control station by multiple base stations is multicasting data to multiple base stations ARQ Performed by the control station in the same manner as the data transmission Service termination DSD-REQ / RSP Message Exchange by Base Station

Here, the user type is a high-service user, and the transmission type is a method of receiving data for a unicast service from a terminal point of view or transmitting data for a single terminal from a control station to a plurality of base stations in a multicast transmission method. The form is multimedia data, exchanging QoS level adjustment messages at service initiation, data transmission is simultaneous transmission from multiple base stations, ARQ is performed by the control station, and informs termination through message exchange at service termination.

Referring to FIG. 2, performance degradation may occur in the terminal 210 according to a relative position from the base station 202. Referring to FIG. 3, which shows a performance graph according to distance, the performance level decreases as the distance between the terminal and the base station increases, and when the distance 302 is reached, the performance level drops below the required QoS level 300. do.

According to the prior art, the terminals 210, 212, and 214 are each provided with services from the corresponding base stations 202, 204, and 206 while taking a performance degradation. However, if the terminal 210 has registered the QoS level value 303 required for the initial access to the base station 202 in the form of a profile, when the terminal 210 detects that the performance is lowered below the corresponding QoS level 300, an advanced service zone ( By setting 230 and receiving a multicasting service in conjunction with other base stations 204 and 206, the terminal 210 can obtain a diversity effect and maintain QoS quality. That is, the terminal 210 simultaneously receives data from the base stations 202, 204, and 206 in the advanced service zone 230 to maintain QoS.

Referring to a detailed operation description, when the terminal 210 reaches the enhanced service start time 303 shown in FIG. 3, the terminal 210 establishes an advanced service zone 230 between base stations 202, 204, and 206 capable of performing the corresponding service. And transmit information including the list of base stations forming the zone 230 to the control station 200 so as to transmit the same data to the formed zone 230. Finally, the terminal 210 may receive MAP information for a service from the base stations 202, 204, and 206 formed as the zone 230, and receive resource allocation information for receiving actual service. . In some implementations, the control station 200 may be notified of the detection of a drop in the service level from the corresponding base station, and may collect information on whether the service station is included in the advanced service zone.

4 illustrates a signal procedure for supporting QoS of a specific terminal in a cell boundary area in a broadband wireless communication system according to an exemplary embodiment of the present invention.

Referring to FIG. 4, when the control station 406 transmits data to the base station 1 402 (410), the base station 1 402 transmits the data to the terminal 400 (408).

In this case, the terminal 400 measures the signal strength from the base station and detects whether its service level falls below a threshold (412). Depending on the implementation, the service level degradation may be detected in various ways, and the service level degradation detection may be performed by the serving base station 1 402 to be notified to the terminal 400.

Subsequently, when a service level drop is detected, the base station 1 402 sends a dynamic service change request (DSC-REQ) message 414 to the terminal 400 to dynamically change parameters of an existing service flow. send. The terminal 400 transmits the DSC-RSP message 416 to the base station 1 402 as a response to the received DSC-REQ message. According to an implementation, the terminal 400 may transmit 414 a DSC-REQ message to the base station 1 402 and the base station 1 402 may transmit a 416 DSC-RSP message to the terminal 400. It may be. Accordingly, a new traffic characteristic and a scheduling condition of the service flow can be specified by exchanging a DSC-REQ message and a DSC-RSP message between the base station 1 402 and the terminal 400. That is, when the performance of the subscriber is lowered below the QoS level required for initial subscription, the base station requests the terminal to change the service characteristic through a DSC-REQ message. In addition, the subscriber who wants to receive the service even accepts the change of the fee to pay and accepts the service characteristic change to the base station through the DSC-RSP message.

Subsequently, the serving base station 1 402, which has received the characteristic change acceptance by the terminal 400, exchanges an advanced service negotiation request / accept message 418 with the neighbor base station 404. Set up a service zone to determine whether you can perform enhanced services. At this time, each neighboring base station dynamically accepts the request according to the current radio resource situation.

Subsequently, when an advanced service zone is formed between neighboring base stations, the serving base station 1 402 informs the control station 406 of the base station list forming the advanced service zone by transmitting an enhanced service indication message 420. .

Thereafter, the serving base station 1 402 and the neighbor base station 2 404 respectively perform preparation procedures 422 and 424 for burst allocation for the control station 406 and the corresponding service. That is, the serving base station 1 402 and the neighbor base station 2 404 exchange the Enhanced Service Burst Reservation request / response messages 422 and 424 with the control station 406, respectively. Here, the advanced service burst reservation message includes a start frame, a frame period, a frame duration, a start symbol, end symbol information, and the like.

Thereafter, the serving base station 1 402 and the neighbor base station 2 404 transmit the same high service MAP message to the terminal 400 (426, 428) to notify the service start again.

Thereafter, the control station 406 performs data transmission 430, 432 by a multicasting service that simultaneously transmits the same data to several base stations 402, 404 formed as zones.

Thereafter, the serving base station 1 402 and the neighbor base station 2 404 respectively transmit the data 434 received from the control station 406 to the terminal 400. In other words, the terminal 400 simultaneously receives data from the serving base station 1 402 and the neighbor base station 2 404.

The algorithm of the present invention is then terminated.

5 is a flowchart illustrating an operation of a base station for supporting QoS of a terminal in a cell boundary area according to an exemplary embodiment of the present invention.

Referring to FIG. 5, in step 501, the base station determines whether the QoS level of an advanced service terminal in a service area is less than or equal to a preset threshold. When the QoS level is equal to or greater than a threshold, the base station maintains a current service. In addition, the QoS level is detected by periodic or event method. Here, the determination of whether the QoS level of the terminal is less than or equal to a preset threshold may be made by notification from the terminal, or the base station measures the signal strength of the terminal.

If the QoS level is less than the threshold, the base station proceeds to step 503 to re-adjust the QoS level with the advanced service terminal. The QoS level is readjusted by exchanging DSC-REQ message and DSC-REQ message between the base station and the terminal.

In step 505, the base station attempts to negotiate an advanced service with neighboring base stations and collects base station information to be included in an advanced service zone.

In step 507, the base station transmits an advanced service indication message including a base station list forming an advanced service zone to the control station.

Thereafter, the base station exchanges information for burst allocation with the control station in step 509. To this end, the base station and the neighboring base station may obtain a start frame, a frame period, a frame period, a start symbol, and end symbol information by exchanging a high service burst reservation request / response message with the control station. At this time, the neighboring base stations are base stations included in the advanced service zone.

In step 511, the base station and the neighboring base stations generate high-service MAP information for the corresponding terminal and transmit the generated MAP information to the corresponding terminal.

Thereafter, the base station and the neighboring base station receive data from the control station in step 513.

In step 515, the base station terminates the setting of the advanced service zone at the end of the service session. Depending on the implementation, the advanced service zone setting may be terminated under the control of the control station.

The algorithm of the present invention is then terminated.

6 is a flowchart illustrating an operation of a terminal for supporting QoS in a cell boundary area in a mobile communication system according to an exemplary embodiment of the present invention.

Referring to FIG. 6, when the QoS level decrease is detected in step 601, the terminal re-adjusts the QoS level by exchanging a DSC-REQ message and a DSC-REQ message with the base station.

Thereafter, the terminal proceeds to step 603 to receive the advanced service MAP information from the base stations in the advanced service zone to prepare for the advanced service according to the present invention.

In step 605, the terminal receives data from base stations belonging to an advanced service zone. That is, the terminal receives data transmitted simultaneously from base stations belonging to an advanced service zone.

The algorithm of the present invention is then terminated.

7 is a diagram illustrating a base station apparatus for supporting QoS of a terminal in a cell boundary area according to an exemplary embodiment of the present invention.

Referring to FIG. 7, the base station includes an RF processor 701, 709, a transmitter 703, a controller 705, a receiver 707, a QoS negotiation unit 711, an advanced service negotiation unit 713, and an advanced service setting. The unit 715, the multicasting control unit 717, the interface unit 719 and the like.

The RF processor 709 receives an RF band signal through a reception antenna and converts the RF band signal into a baseband signal. The receiver 707 receives the baseband signal from the RF processor 709 and demodulates and decodes the data according to a predetermined modulation / coding scheme to output data and control information bits. The transmitter 703 encodes and modulates data and control information bits from the controller 705 and outputs a baseband signal to the RF processor 701. The RF processor 701 converts the baseband signal from the transmitter 703 into an RF band signal and transmits it to a wireless channel through a transmission antenna.

The control unit 705 controls the overall base station operation, in addition to the present invention, the QoS negotiation unit 711, the advanced service negotiation unit 713, the advanced service setting unit 715, the multicasting control unit 717 The interface unit 719 is controlled to maintain the QoS level of a specific terminal.

The QoS negotiation unit 711 generates a DSC-REQ message or a DSC-RSP message and exchanges or adjusts QoS parameters by exchanging with a terminal through a transceiver. The advanced service negotiation unit 713 generates and exchanges an advanced service negotiation message with neighboring base stations when the QoS parameter is changed / adjusted. The advanced service negotiation unit 713 forms a high service zone through the high service negotiation message exchange and stores a list of base stations constituting the high service zone. For example, in FIG. 2, base stations 202, 204, and 206 form an advanced service zone. The advanced service setting unit 715 receives a list of base stations forming an advanced service zone from the advanced service negotiation unit 713, and transmits the received base station list to the control station through the interface unit 719. After exchanging the burst reservation request / response message, MAP information for the service of the present invention is transmitted to the terminal and a multicasting service is prepared. The multicasting control unit 717 receives the multicasted data from the control station and transmits the data to the corresponding terminal. The interface unit 719 exchanges an advanced service control message (an advanced service negotiation message, an advanced service burst reservation request / response message) by providing an interface between the control station or an adjacent base station. Here, the multicasting service means that the control station transmits data to base stations in the high service zone.

8 illustrates a terminal device for supporting QoS in a cell boundary area in a mobile communication system according to an embodiment of the present invention.

Referring to FIG. 8, the terminal includes an RF processor 801, 809, a transmitter 703, a controller 805, a receiver 807, an advanced service controller 811, a QoS negotiation unit 813, and an advanced service negotiation unit. 815 and the like.

The RF processor 809 receives an RF band signal through a reception antenna and converts the RF band signal into a baseband signal. The receiver 807 receives the baseband signal from the RF processor 809 and demodulates and decodes the data according to a predetermined modulation / coding scheme to output data and control information bits. The transmitter 803 encodes and modulates data and control information bits from the controller 805 and outputs a baseband signal to the RF processor 801. The RF processor 801 converts the baseband signal from the transmitter 803 into an RF band signal and transmits the RF signal to a wireless channel through a transmission antenna.

The controller 805 controls the overall operation of the terminal, and controls the multicasting controller 811, the QoS negotiation unit 813, and the advanced service negotiation unit 815 to maintain a QoS level through a multicasting service. do.

The altitude service control unit 811 controls overall altitude service from base stations in the altitude service zone. The QoS negotiation unit 813 generates a DSC-REQ message or a DSC-RSP message and exchanges or adjusts QoS parameters by exchanging with the base station through a transceiver. The advanced service negotiation unit 815 prepares a service by analyzing MAP information for the service according to the present invention from base stations in the advanced service zone.

Although the present invention has been described based on a broadband wireless communication system (eg, IEEE 802.16), the present invention can be applied to other mobile communication systems.

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the scope of the following claims, but also by the equivalents of the claims.

As described above, by setting the advanced service zone in the mobile communication system to perform simultaneous transmission service from the base stations belonging to the advanced service zone, it is possible to provide enhanced QoS to the terminal located in the cell boundary area but wanting to receive high quality service. There is an advantage to that. In addition, while providing a method for providing an enhanced service to a desired terminal, it is not provided in a fixed form, but is supported depending on the status of resources within the base station and resources within the base station. Their quality of service will not occur.

Claims (16)

A method of operating a base station for supporting quality of service (QoS) of a terminal in a cell boundary area in a mobile communication system, Checking the QoS level deterioration of the terminal; Forming an enhanced service zone for simultaneous data transmission service to neighboring base stations and the terminal when the QoS level decreases; Allocating resources for a simultaneous data transmission service to the terminal; Receiving the corresponding data from an upper network entity by using the allocated resource. The method of claim 1, The process of forming an enhanced service zone for simultaneous data transmission service to neighboring base stations and the terminal when the QoS level decreases is performed. Transmitting a high service negotiation request message to the adjacent base stations; Receiving a message indicating whether the advanced service is available from the neighbor base stations; And generating a base station list capable of the advanced service and transmitting the same to a higher network entity. The method of claim 1, The process of allocating resources for the simultaneous data transmission service to the terminal Exchanging a burst reservation message for the advanced service with an upper network entity; And transmitting MAP information for the advanced service to a corresponding terminal. The method of claim 1, And the advanced service zone is all cell areas of base stations participating in a simultaneous data transmission service to the terminal. The method of claim 1, The terminal is a high service terminal, characterized in that for maintaining a profile including the current state of the base station and the service subscriber, the required QoS level, service maintenance timer, and the like. The method of claim 1, Exchanging a message with the terminal to adjust or change the QoS level when the QoS level decreases. A method of operating a terminal for supporting quality of service (QoS) in a cell boundary region of a mobile communication system, Exchanging messages with the base station to re-adjust or change the QoS level, Receiving MAP information for advanced service from base stations forming an enhanced service zone according to the QoS level; Receiving the data from the base stations at the same time. A base station apparatus for supporting a quality of service (QoS) of a terminal in a cell boundary area in a mobile communication system, QoS negotiation unit for checking the QoS level degradation of the terminal, An advanced service control unit for forming an enhanced service zone for simultaneous data transmission service to neighboring base stations and the terminal when the QoS level decreases; A multicasting control unit for allocating resources for a simultaneous data transmission service to the terminal; And an interface unit for receiving corresponding data from an upper network entity using the allocated resource. The method of claim 8, The advanced service control unit An advanced service negotiation unit for transmitting an advanced service negotiation request message to the neighbor base stations and receiving a message indicating whether the advanced service is available from the neighbor base stations; And an advanced service setting unit for generating the base station list capable of the advanced service and transmitting the generated base station list to a higher network entity. The method of claim 8, The multicasting control unit And exchange a burst reservation message for the advanced service with a higher network entity, and transmit MAP information for the advanced service to a corresponding terminal. The method of claim 8, And the advanced service zone is an area of all cells of base stations participating in a simultaneous data transmission service to the terminal. The method of claim 8, The terminal is a high service terminal, characterized in that for maintaining a profile including the current state of the base station and the service subscriber, the required QoS level, service maintenance timer, and the like. The method of claim 8, And the QoS negotiation unit exchanges a message for adjusting or changing the QoS level with the terminal when the QoS level decreases. A terminal device for supporting a Quality of Service (QoS) in a cell boundary region of a mobile communication system, A QoS negotiating unit for exchanging messages with the base station to adjust or change the QoS level; An advanced service control unit for receiving MAP information for advanced service from base stations forming an enhanced service zone after the QoS level adjustment or change; And a controller for simultaneously receiving corresponding data from the base stations. In the mobile communication system for supporting the Quality of Service (QoS) of the terminal in the cell boundary region, Check the QoS level deterioration of the terminal, form an enhanced service zone for simultaneous data transmission service to neighboring base stations and the corresponding terminal when the QoS level decreases, allocate resources for the simultaneous data transmission service, and A base station for receiving data from an upper network entity using the allocated resource; Exchanging messages with the base station for re-adjusting or changing a QoS level, receiving MAP information for advanced service from base stations forming the advanced service zone according to the QoS level, and simultaneously receiving the data from the base stations System comprising a terminal. The method of claim 15, And a control station for receiving the list of base stations forming the advanced service zone, exchanging a burst reservation request / response message for a multicasting service with base stations in the list, and then transmitting the multicasting data to the base stations. System characterized in that.

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