KR20110049730A - Method and apparatus for providing multicast and broadcast service, method and wireless terminal for using multicast and broadcast service - Google Patents

Abstract

PURPOSE: A multicast broadcasting service providing method, apparatus thereof, and multicast broadcasting service are provided to supply a multicast broadcasting service according to the supply of a multicast broadcasting service of a cell within an MBS zone. CONSTITUTION: An MBS(Multicast Broadcasting Service) supplying apparatus determines whether there is a first terminal(S501). The first terminal is included in the coverage of a base station. The apparatus determines whether there is a second terminal(S503). The second terminal is included within a preset range in the coverage of the neighboring base center. The base station supplies a multicast broadcasting service according to the presence of first and second terminals(S505).

Description

METHOD AND APPARATUS FOR PROVIDING MULTICAST AND BROADCAST SERVICE, METHOD AND WIRELESS TERMINAL FOR USING MULTICAST AND BROADCAST SERVICE}

The present invention relates to a method and apparatus for providing a multicast broadcast service (MBS), a method for using a multicast broadcast service, and a wireless terminal for using a multicast broadcast service, and more particularly, to improve efficiency of radio resources and guarantee service continuity. A method and apparatus for providing a multicast broadcast service, a method for using a multicast broadcast service, and a wireless terminal for using a multicast broadcast service.

Data transmission on the Internet is generally accomplished by establishing a one-to-one connection between sender and receiver. That is, data transmission is performed by a unicast method in which one sender transmits data to one receiver. When one-to-many communication is performed by this unicast method, congestion of the network may be caused. In particular, next-generation wireless Internet services such as 4G are based on large-capacity multimedia data transmission, and thus, one-to-many communication using a unicast method is almost impossible.

In order to reduce network congestion that can be caused by the unicast scheme and to effectively use bandwidth, a multicast transmission scheme has emerged. The multicast scheme is a one-to-many or many-to-many transmission scheme. Unlike the unicast method, the multicast method is a technology that can improve network resources and system overload by transmitting one data packet to multiple receivers at the same time.

In addition to the proliferation of mobile terminals, such multicast technology has been applied to wireless Internet environments such as WiBro. In IEEE 802.16e, MBS (Multicast and Broadcast Service) technology is defined. In IEEE 802.16m, which is being standardized for the next generation WiBro, standardization is being performed for Enhanced MBS (EMBS). The WiMAX Forum defines technical standards as MCBCS.

An object of the present invention is to provide a method and apparatus for providing a multicast broadcast service for improving the efficiency of radio resources and guarantee service continuity, a method for using a multicast broadcast service, and a wireless terminal for using the multicast broadcast service.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. It will also be appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

According to an aspect of the present invention, there is provided a method of providing a multicast broadcast service of a base station included in an MBS zone, the method comprising: determining whether a first terminal included in coverage of the base station receives a multicast broadcast service; Determining whether there is a second terminal included in the coverage of a neighboring base station within a preset range from the base station and receiving a multicast broadcast service; And providing the multicast broadcast service according to a result of determining whether the first and second terminals exist.

In addition, the present invention for achieving the above object is a multicast broadcast service providing apparatus of the MBS zone, which is included in the coverage of the multicast broadcast service providing apparatus for determining whether the first terminal receiving a multicast broadcast service exists; A first determination unit; A second judging unit, which is included in a neighbor cell within a preset range from the multicast broadcast service providing apparatus, and determines whether a second terminal receiving a multicast broadcast service exists; And a service provider for providing the multicast broadcast service according to a result of determining whether the first and second terminals exist.

In addition, the present invention for achieving the above object is a method of using a multicast broadcast service of a wireless terminal, the reception status message indicating whether to receive the multicast broadcast service data, provided from the base station of the MBS zone including the wireless terminal Generating a; Generating a channel identifier message for the received multicast broadcast service data when receiving the multicast broadcast service data; And transmitting the reception status message and the channel identifier message to the base station.

In addition, the present invention for achieving the above object is a wireless terminal for using a multicast broadcast service, the reception state indicating whether to receive the multicast broadcast service data, provided from the base station of the MBS zone including the wireless terminal A first message generating unit generating a message; A second message generator configured to generate a channel identifier message for the received multicast broadcast service data when receiving the multicast broadcast service data; And a transmitter for transmitting the reception status message and the channel identifier message to the base station.

According to the present invention, by providing a multicast broadcast service according to whether a neighbor cell provides a multicast broadcast service in a preset MBS zone, it is possible to improve the efficiency of radio resources and ensure service continuity.

1 is a view for explaining a static multicast broadcast service,
2 is a diagram for explaining a dynamic multicast broadcast service;
3 and 4 are views for explaining the concept of a multicast broadcast service providing method according to the present invention;
5 is a view for explaining a multicast broadcast service providing method according to an embodiment of the present invention;
6 is a view for explaining a multicast broadcast service providing method according to a first embodiment of the present invention;
7 is a view for explaining a multicast broadcast service providing method according to a second specific embodiment of the present invention;
8 is a view for explaining a multicast broadcast service providing method according to a third embodiment of the present invention;
9 is a view for explaining a multicast broadcast service using method according to an embodiment of the present invention.

DETAILED DESCRIPTION Hereinafter, the most preferred embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art may easily implement the technical idea of the present invention. The above objects, features, and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, and in describing the present invention, a detailed description of well-known technology related to the present invention may unnecessarily obscure the subject matter of the present invention. If it is determined that the detailed description thereof will be omitted.

The above-described MBS technology allows a plurality of terminals included in a wireless communication system to share radio resources for multicast support. The MBS technology introduces the concept of an MBS zone to ensure service continuity of a mobile wireless terminal. The MBS zone refers to a multicast broadcast service providing area. The MBS zone is not a unit of a base station cell, and the MBS zone includes a plurality of base stations. That is, from the standpoint of the wireless terminal, the MBS zone may be coverage for one base station. Therefore, when all of the base stations included in the MBS zone provide a multicast broadcast service, even if the wireless terminal moves in the MBS zone, the service can be provided without handover, and service continuity can be guaranteed.

On the other hand, there are two types of multicast broadcasting service methods: static MBS and dynamic MBS. Hereinafter, with reference to the drawings will be described in more detail.

1 and 2 are diagrams for describing a static MBS scheme and a dynamic MBS scheme, respectively.

In FIG. 1 and FIG. 2, an MBS transmission cell refers to a cell of a base station providing a multimedia broadcasting service in an MBS zone, and an MBS receiving terminal refers to a terminal receiving multimedia broadcasting service data. The cell not transmitting the MBS means a cell of the base station which does not provide the multimedia broadcasting service.

 As shown in FIG. 1, the static MBS scheme provides a multicast broadcast service regardless of whether an MBS receiving terminal exists in the MBS zone. That is, the MBS receiving terminal receives the MBS data from all the cells of the MBS zone shown in FIG. Therefore, in the case of the static MBS scheme, the MBS receiving terminal can obtain a macro diversity gain, and performance degradation due to intercell interference can be prevented. However, since a multicast broadcast service is provided even in a cell that does not include an MBS receiving terminal, radio resources are wasted.

In the dynamic MBS scheme, as shown in FIG. 2, a multicast broadcast service is provided only in an MBS transmission cell in which an MBS receiving terminal exists in an MBS zone. That is, a cell without the MBS receiving terminal does not transmit MBS data. Therefore, in the case of the dynamic MBS scheme, the base station of the cell in which the MBS receiving terminal does not exist may utilize the radio resources pre-allocated for the MBS for other purposes, and radio resource efficiency may be increased. However, when the MBS receiving terminal included in the MBS transmitting cell providing the multicast broadcasting service moves to a cell not providing the multicast broadcasting service, service continuity may not be guaranteed and mutual interference between adjacent cells may occur. . In FIG. 2, the dotted line arrow indicates movement of the MBS receiving terminal, and the solid line arrow indicates mutual interference between adjacent cells.

In order to solve the above-mentioned problem, the present invention provides a multicast broadcasting service according to the presence or absence of an MBS receiving terminal based on a dynamic MBS scheme, but also in a neighboring cell adjacent to the base station cell in the MBS zone in which the MBS receiving terminal exists. Multicast broadcasting service can be provided. For example, if the MBS receiving terminal is included in the first cell of the MBS zone, the second cell provides a multicast broadcast service even if the MBS receiving terminal is not included in the second cell adjacent to the first cell.

Therefore, according to the present invention, since the multicast broadcast service can be provided not only in the first cell but also in the second cell adjacent to the first cell, the continuity of the service for the MBS receiving terminal moving from the first cell to the second cell is guaranteed. Macro diversity gain can be provided. In addition, according to the present invention, since all the base stations in the MBS zone do not need to transmit MBS data while ensuring continuity of services, the efficiency of radio resources can be improved. In a situation where more and more services that require many radio resources, such as Mobile IPTV service, are required, the applicability of the present invention will be high.

Hereinafter, the present invention will be described in more detail with reference to FIGS. 3 to 9.

3 and 4 are diagrams for explaining the concept of a multicast broadcast service providing method according to the present invention.

According to the present invention, as shown in FIG. 3, in the MBS zone 300, the cell 301 of the base station including the MBS receiving terminal and the neighbor cell 303 of the cell 301 including the MBS receiving terminal are Provides a multicast broadcast service. Here, as shown in FIG. 3, the neighbor cell 303 represents a cell within a preset range from a cell including the MBS receiving terminal. The neighbor cell 303 does not include the MBS receiving terminal, but the neighbor cell 303 provides a multicast broadcast service. According to the present invention, the number of cells providing a multicast broadcast service is small compared to the static MBS scheme of FIG. 1, and the number of cells providing a multicast broadcast service is large compared to the dynamic MBS scheme of FIG. 2. It can be seen.

More specifically, the base station included in the MBS zone determines whether there is an MBS receiving terminal included in the coverage of the base station and receiving the multicast broadcast service. The base station included in the MBS zone may determine whether the MBS receiving terminal exists by receiving a reception status message indicating coverage of the base station, that is, whether the multicast broadcast service data is received from the terminal existing in the cell. In this case, the MBS receiving terminal may transmit a channel identifier message for the multicast broadcast service provided to the MBS receiving terminal to the base station included in the MBS zone. The channel identifier will be described in more detail with reference to FIG. 5.

The base station included in the MBS zone determines whether there is an MBS receiving terminal included in a cell of a neighboring base station within a preset range and receiving a multicast broadcast service. The base station included in the MBS zone may determine whether the MBS receiving terminal exists in the neighboring cell by receiving a notification message indicating whether the MBS receiving terminal exists in the neighboring cell from the base station of the neighboring cell.

In this case, for example, the base station of the neighbor cell 303 may transmit a channel identifier message for the multicast broadcast service provided to the MBS receiving terminal of the neighbor cell to the cell 301. The base station included in the MBS zone provides the multicast broadcast service according to whether the MBS receiving terminal exists in its cell and the neighbor cell.

For example, in FIG. 3, since the MBS receiving terminal exists in the first cell 301, the first cell 301 provides a multicast broadcast service. The base station of the second cell 303 adjacent to the first cell 301 determines whether the MBS receiving terminal exists in the second cell 303. Since the MBS receiving terminal exists in the first cell 301 even though the MBS receiving terminal does not exist in the second cell 303, the second cell 303 provides a multicast broadcast service. From the standpoint of the second cell 303, the first cell 301 becomes an adjacent cell.

The first cell 301 and the second cell 303 may determine whether the MBS receiving terminal exists by using the above-described message.

4 is a view for explaining the service continuity guarantee according to the present invention in more detail. As shown in FIG. 4, when the MBS receiving terminal 401 moves to the right cell, a cell providing a multicast broadcast service is increased according to the moving direction of the MBS receiving terminal 401.

That is, even if the MBS receiving terminal 401 does not exist in the neighbor cell 405 of the cell 403 where the MBS receiving terminal 401 existed in the first step (a), the multicast broadcasting service is provided in the neighboring cell 405. Therefore, even if the MBS receiving terminal 401 moves to the neighbor cell 405 in step (b), the MBS receiving terminal 401 can use the service continuously.

5 is a view for explaining a multicast broadcast service providing method according to an embodiment of the present invention. In FIG. 5, a multicast broadcast service providing method of a multicast broadcast service providing apparatus is described as an embodiment. The apparatus for providing a multicast broadcast service may be, for example, a separate control server for a base station or an MBS zone included in the MBS zone of FIGS. 3 and 4.

As shown in FIG. 5, the method for providing a multicast broadcast service according to the present invention starts from step S501.

In step S501, the multicast broadcast service providing apparatus of the MBS zone determines coverage of the multicast broadcast service providing apparatus, that is, the presence of a first terminal included in a cell and receiving a multicast broadcast service. The multicast broadcast service providing apparatus may determine whether the first terminal exists by receiving a reception status message indicating whether the multicast broadcast service data has been received from the first terminal.

In more detail, step S501 may include receiving a reception status message indicating whether or not reception of multicast broadcast service data is received from the first terminal; And determining whether the first terminal receives a multicast broadcast service using the reception status message. When the first terminal receives the multicast broadcast service, the apparatus for providing a multicast broadcast service may receive a channel identifier message for the multicast broadcast service provided to the first terminal from the first terminal.

The reception status message may indicate whether reception of the multicast broadcast service data is performed using, for example, 1 bit. When the bit value included in the reception status message is 1, it may represent that multicast broadcast service data is received.

The channel identifier message may indicate a channel for the multicast broadcast service provided to the first terminal using, for example, 16 bits. When the reception status message value is 1, it may be provided to a multicast broadcast service providing apparatus. In the case of the channel identifier, the IEEE 802.16 MBS may be a MCID (Multicast Connection ID) value, and in the IEEE 802.16m E-MBS, the channel identifier may be a combination value of a STID (Station ID) and a FID (Flow ID).

In step S503, the multicast broadcast service providing apparatus determines whether a multicast broadcast service providing apparatus, that is, a second terminal that is included in the coverage of an adjacent base station within a preset range from a base station of an MBS zone and receives a multicast broadcast service, exists. . The multicast broadcast service providing apparatus may determine whether the second terminal exists by receiving a notification message indicating whether the second terminal exists from the neighboring base station. The multicast broadcast service providing apparatus and the base station of the adjacent cell may exchange a notification message through the network interface between the base stations.

More specifically, step S503 includes receiving a notification message indicating whether a second terminal exists from a base station of a neighboring cell; And determining whether the second terminal receives a multicast broadcast service by using the notification message. When the second terminal receives the multicast broadcast service, the multicast broadcast service providing apparatus may receive a channel identifier message for the multicast broadcast service provided to the second terminal from the base station of the neighbor cell.

The notification message may indicate, for example, whether or not there is a second terminal that receives a multicast broadcast service using 1 bit. When the bit value included in the notification message is 1, it may represent that the second terminal provided with the multicast broadcast service exists in the neighbor cell. As the channel identifier message, the channel identifier message described in step S501 can be used.

Meanwhile, the multicast broadcast service providing apparatus may determine whether a second terminal exists for each channel for the multicast broadcast service using a base station of an adjacent cell. The base station of the neighbor cell may generate a notification message using the reception status message and the channel identifier message transmitted from the second terminal as in step S501.

In operation S505, the multicast broadcast service providing apparatus provides a multicast broadcast service according to a result of determining whether the first and second terminals exist. The multicast broadcast service providing apparatus may provide a multicast broadcast service when at least one of the first and second terminals receives the multicast broadcast service.

That is, as described with reference to FIG. 3, the multicast broadcast service providing apparatus provides coverage of the multicast broadcast service providing apparatus, that is, if a second terminal exists in an adjacent cell even if the first terminal does not exist in the cell. to provide. In addition, the multicast broadcast service providing apparatus provides a multicast broadcast service when the first terminal exists in the coverage of the multicast broadcast service providing apparatus.

On the other hand, as described above, in the dynamic MBS scheme, radio resources pre-allocated for MBS may be used for other services. In operation S505, when the first and second terminals do not receive the multicast broadcast service, the multicast broadcast service providing apparatus may allocate a pre-allocated resource to another wireless service for the multicast broadcast service. The multicast broadcast service providing apparatus recovers the pre-allocated resources when at least one of the first and second terminals receives the multicast broadcast service while the pre-allocated resources are allocated to other wireless services. Occasionally we can provide multicast broadcast services.

That is, as described with reference to FIG. 4, the apparatus for providing multicast broadcast services of a given cell 407 allocates radio resources for MBS to another radio service in step (a), and the neighbor cell 405 in step (b). In the case where the multicast broadcast service is provided, the multicast broadcast service may be provided by reclaiming pre-allocated resources.

On the other hand, the multicast broadcast service providing method according to the present invention is a third terminal of the idle mode (idle mode) receiving the multicast broadcast service, including the coverage of the multicast broadcast service providing apparatus, providing a multicast broadcast service of the adjacent cell The method may further include transmitting a provision status message indicating whether or not.

The terminal in the idle mode does not provide information to the base station. Therefore, even if the third terminal receiving the multicast broadcast service moves to the neighbor cell in the coverage of the multicast broadcast service providing apparatus, the base station of the neighbor cell cannot determine whether to use the multicast broadcast service of the third terminal. In addition, the neighboring cell adjacent to the neighboring cell also cannot determine whether the third terminal receives the multicast broadcast service from its cell.

Accordingly, the apparatus for providing a multicast broadcast service according to the present invention transmits a provision status message indicating whether the neighbor cell provides a multicast broadcast service to a third terminal in an idle mode, and thus the third terminal updates its location. update). The third terminal receiving the provision status message may perform location update according to the multicast broadcast service provision status information and transmit the reception status message to the base station of the neighbor cell. The third terminal may perform location update when the multicast broadcast service is not provided in a cell including the third terminal or an adjacent cell.

Accordingly, the base station of the neighbor cell may determine whether the third terminal uses the multicast broadcast service, and the continuity of the service may be guaranteed even when the third terminal in the idle mode moves.

The apparatus for providing multicast broadcast service according to the present invention may use AAI_E-MBS-CFG_Message of IEEE 802.16m as a provision status message. The 'MSTID and FID Mapping List inclusion' field and the 'MSTID and FID Mapping List' field of AAI_E-MBS-CFG_Message may be used. The 'MSTID and FID Mapping List inclusion' field is similar to the above-described notification message and indicates whether a neighboring cell provides a multicast broadcast service using a 1-bit value. The 'MSTID and FID Mapping List' field is similar to the channel identifier message described above, and provided by the multicast broadcasting service of the neighbor cell when the combined value of the MSTID (MBS Station ID and FID (Flow ID)) indicating the channel identifier is 0. May indicate no.

FIG. 6 is a diagram for describing a multicast broadcast service providing method according to a first embodiment of the present invention. In FIG. 6, a multicast broadcast service providing method of a multicast broadcast service providing apparatus providing a multicast broadcast service is described as an embodiment.

As shown in FIG. 6, first, the multicast broadcast service providing apparatus of the MBS zone determines whether the coverage of the multicast broadcast service providing apparatus and the MBS receiving terminal included in the MBS cell exist (S601). The multicast broadcast service providing apparatus may determine whether the MBS receiving terminal exists by using a reception status message transmitted from the MBS receiving terminal.

As a result of the determination in step S601, when the terminal receiving the MBS data, that is, the MBS receiving terminal receiving the multicast broadcasting service exists in the MBS cell, the multicast broadcasting service providing apparatus transmits the MBS data (S603). As a result of the determination in step S601, when the MBS receiving terminal does not exist in the MBS cell, the multicast broadcast service providing apparatus determines whether the MBS data receiving terminal exists in the neighboring cell (S605). The multicast broadcast service providing apparatus may determine whether the MBS data receiving terminal exists in the neighbor cell by using the notification message transmitted from the base station of the neighbor cell.

As a result of the determination in step S605, when the MBS data receiving terminal exists in the neighbor cell, the multicast broadcast service providing apparatus of the MBS cell transmits MBS data (S607). As a result of the determination in step S605, when there is no MBS data receiving terminal in the neighbor cell, the multicast broadcast service providing apparatus of the MBS cell stops transmitting MBS data (S607). That is, the apparatus for providing multicast broadcast service of the MBS cell does not provide the multicast broadcast service.

7 is a view for explaining a multicast broadcast service providing method according to a second embodiment of the present invention. In FIG. 7, a method of providing a multicast broadcast service in an MBS zone according to a situation of an adjacent cell in an MBS cell in which multicast broadcast service is stopped is described as an embodiment.

As illustrated in FIG. 7, the apparatus for providing multicast broadcast services of an MBS cell determines whether an MBS data receiving terminal exists in an adjacent cell (S701). As a result of the determination in step S701, when there is no MBS data receiving terminal in the neighbor cell, the multicast broadcast service providing apparatus maintains suspension of MBS data transmission (S703). As a result of the determination in step S701, when the MBS data receiving terminal exists in the neighbor cell, the multicast broadcast service providing apparatus determines whether or not the radio resource for MBS data is used for other purposes (S705).

As a result of the determination in step S705, when the radio resource for the MBS data is not used for other purposes, the multicast broadcast service providing apparatus starts the transmission of the MBS data using the radio resource for the MBS data (S707). As a result of the determination in step S705, when the radio resource for data is used for other purposes, the multicast broadcast service providing apparatus switches the radio resource for MBS data currently used for other purposes to the multicast broadcast service, and then MBS. Transmission of data is started (S709).

8 is a diagram for describing a multicast broadcast service providing method according to a third specific embodiment of the present invention.

In FIG. 8, when the MBS data receiving terminal enters the MBS cell in which the multicast broadcasting service is stopped or the MBS data receiving terminal requests the multicast broadcasting service in the MBS cell in which the multicast broadcasting service is stopped, the multicast broadcasting service is provided. A multicast broadcast service providing method of a providing apparatus is described as an embodiment. Here, the MBS cell is an MBS cell in which the multicast broadcast service is stopped, and may be an MBS cell located at the boundary of the cell of the base station that does not provide the multicast broadcast service. That is, the terminal entering the MBS cell enters the MBS cell directly from the coverage of the base station that does not provide a multicast broadcast service.

The multicast broadcast service providing apparatus determines whether an MBS data receiving terminal exists in an MBS cell (S801). If the MBS data receiving terminal does not exist as a result of the determination in step S801, the multicast broadcast service providing apparatus maintains suspension of MBS data transmission (S803). As a result of the determination in step S801, when the MBS data receiving terminal exists, the multicast broadcast service providing apparatus determines whether or not the radio resource for MBS data is used for other purposes (S805).

As a result of the determination in step S805, when the radio resource for the MBS data is not used for other purposes, the multicast broadcast service providing apparatus starts the transmission of the MBS data by using the radio resource for the MBS data (S807). As a result of the determination in step S805, when the radio resource for data is used for other purposes, the multicast broadcast service providing apparatus switches the radio resource for MBS data currently used for other purposes to the multicast broadcast service, and then MBS. Transmission of data is started (S809).

9 is a view for explaining a multicast broadcast service using method according to an embodiment of the present invention. In FIG. 9, a method of using a multicast broadcast service of a wireless terminal is described as an embodiment. The wireless terminal of FIG. 9 may be the terminal described with reference to FIGS. 3 to 8.

As shown in Fig. 9, the method for providing a multicast broadcast service according to the present invention starts from step S901.

In step S901, the wireless terminal generates a reception status message indicating whether to receive the multicast broadcast service data provided from the base station of the MBS zone including the wireless terminal. Here, the base station is the above-described multicast broadcast service providing apparatus, and the reception status message is the reception status message described with reference to FIG. 5.

In step S903, when the wireless terminal receives the multicast broadcast service data, the wireless terminal generates a channel identifier message for the received multicast broadcast service data. Here, the reception status message is a channel identifier message described with reference to FIG. 5.

In step S905, the wireless terminal transmits a reception status message and a channel identifier message to the base station. The base station of the MBS zone that receives the reception status message and the channel identifier message, that is, the multicast broadcast service providing apparatus, may determine whether the wireless terminal uses the multicast broadcast service and provide the multicast broadcast service to the wireless terminal.

On the other hand, the multicast broadcast service using method according to the present invention comprises the steps of receiving from the base station of the MBS zone multicast broadcast service providing state information of the neighboring base station included in the preset range from the base station of the MBS zone; And performing location update according to the multicast broadcast service provision state information.

Here, the multicast broadcast service provision state information of the neighbor cell corresponds to the provision state message of FIG. 5. That is, the multicast broadcast service provision state information of the neighbor cell is information indicating whether the MBS data receiving terminal exists in the neighbor cell.

Meanwhile, although the present invention has been described in terms of processes in FIGS. 1 to 9, each step of configuring a method for providing and using a multicast broadcast service according to the present invention can be easily identified from a device point of view. Therefore, the steps included in the method for providing and using a multicast broadcast service according to the present invention may be understood as an element included in an apparatus for providing a multicast broadcast service and a wireless terminal for using the multicast broadcast service according to the principles of the present invention. have.

That is, an apparatus for providing a multicast broadcast service according to an embodiment of the present invention includes a first determination unit included in the coverage of the apparatus for providing a multicast broadcast service and determining whether a first terminal receiving a multicast broadcast service exists; A second judging unit, which is included in a neighbor cell within a preset range from the multicast broadcast service providing apparatus, and determines whether a second terminal receiving a multicast broadcast service exists; And a service provider for providing the multicast broadcast service according to a result of determining whether the first and second terminals exist. Here, the broadcast service providing apparatus may be a base station of an MBS zone.

Also, a wireless terminal for using a multicast broadcast service according to an embodiment of the present invention generates a reception status message indicating whether to receive multicast broadcast service data provided from a base station of an MBS zone including the wireless terminal. A first message generator; A second message generator configured to generate a channel identifier message for the received multicast broadcast service data when receiving the multicast broadcast service data; And a transmitter for transmitting the reception status message and the channel identifier message to the base station.

Meanwhile, the method for providing a multicast broadcast service and the method for using the multicast broadcast service according to the present invention as described above can be created by a computer program. And the code and code segments constituting the program can be easily inferred by a computer programmer in the art. In addition, the written program is stored in a computer-readable recording medium (information storage medium), and read and executed by a computer to implement the method of the present invention. And the recording medium includes all types of recording media (intangible medium such as a carrier wave as well as tangible media such as CD and DVD) readable by a computer.

Although the present invention has been described by means of limited embodiments and drawings, the present invention is not limited thereto and is intended to be equivalent to the technical idea and claims of the present invention by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible.

Claims (14)

A method of providing a multicast broadcast service of a base station included in a multicast and broadcast service (MBS) zone,
Determining whether there is a first terminal included in coverage of the base station and receiving a multicast broadcast service;
Determining whether there is a second terminal included in the coverage of a neighboring base station within a preset range from the base station and receiving a multicast broadcast service; And
Providing the multicast broadcast service according to a result of determining whether the first and second terminals exist.
Multicast broadcast service providing method comprising a.
The method of claim 1,
The determining of the existence of the first terminal is
Receiving a reception status message indicating whether to receive the multicast broadcast service data from the first terminal; And
Determining whether the first terminal receives the multicast broadcast service using the reception status message;
Multicast broadcast service providing method comprising a.
The method of claim 2,
The determining of the existence of the first terminal is
When the first terminal receives the multicast broadcast service, receiving a channel identifier message for the multicast broadcast service provided to the first terminal from the first terminal;
The multicast broadcast service providing method further comprising.
The method of claim 1,
The determining of the existence of the second terminal is
Receiving a notification message indicating whether the second terminal exists from the neighbor base station; And
Determining whether the second terminal receives the multicast broadcast service using the notification message;
Multicast broadcast service providing method comprising a.
The method of claim 4, wherein
The determining of the existence of the second terminal is
When the second terminal receives the multicast broadcast service, receiving a channel identifier message for the multicast broadcast service provided to the second terminal from the neighbor base station;
The multicast broadcast service providing method further comprising.
The method of claim 1,
Providing the multicast broadcast service
When at least one of the first and second terminals receives the multicast broadcast service, the multicast broadcast service is provided.
Method of providing a multicast broadcast service.
The method of claim 1,
Providing the multicast broadcast service
If the first and second terminals are not provided with the multicast broadcast service, allocating pre-allocated resources for the multicast broadcast service to another wireless service; And
When at least one of the first and second terminals receives the multicast broadcast service while the pre-allocated resource is allocated to the other wireless service, the pre-allocated resource is recovered to recover the multicast broadcast service. Steps to provide
Multicast broadcast service providing method comprising a.
The method of claim 1,
Transmitting, by a third terminal of an idle mode that is included in the coverage of the base station and receives the multicast broadcasting service, a provision status message indicating whether the neighboring base station provides the multicast broadcasting service;
The multicast broadcast service providing method further comprising.
In the multicast broadcast service providing apparatus of the MBS zone,
A first determination unit included in the coverage of the multicast broadcast service providing apparatus and determining whether a first terminal receiving a multicast broadcast service exists;
A second judging unit, which is included in a neighbor cell within a preset range from the multicast broadcast service providing apparatus, and determines whether a second terminal receiving a multicast broadcast service exists; And
A service provider for providing the multicast broadcast service according to a result of determining whether the first and second terminals exist.
Multicast broadcast service providing apparatus comprising a.
The method of claim 9,
The multicast broadcast service providing apparatus
The base station of the MBS zone
Multicast broadcast service providing apparatus.
In the method of using a multicast broadcast service of a wireless terminal,
Generating a reception status message indicating whether to receive multicast broadcast service data provided from a base station of an MBS zone including the wireless terminal;
Generating a channel identifier message for the received multicast broadcast service data when receiving the multicast broadcast service data; And
Transmitting the reception status message and the channel identifier message to the base station
Method of using a multicast broadcast service comprising a.
12. The method of claim 11,
Receiving, from the base station, the multicast broadcast service provision state information of an adjacent base station included in a preset range from the base station; And
Performing location update according to the multicast broadcast service provision state information;
Method of using a multicast broadcast service further comprising.
The method of claim 12,
The wireless terminal receiving the multicast broadcast service providing state information
Wireless terminal in idle mode
How to use a multicast broadcast service.
In a wireless terminal for using a multicast broadcast service,
A first message generation unit generating a reception status message indicating whether to receive multicast broadcast service data provided from a base station of an MBS zone including the wireless terminal;
A second message generator configured to generate a channel identifier message for the received multicast broadcast service data when receiving the multicast broadcast service data; And
Transmitter for transmitting the reception status message and the channel identifier message to the base station
Wireless terminal comprising a.

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