KR101606789B1 - A method for efficient multimedia data transmission considering idle mode mobile stations - Google Patents

Abstract

An effective MBS data transmitting / receiving method considering terminals operating in an idle mode while receiving MBS (Multicast Broadcast Service), which is a service for transmitting multimedia data, is proposed. The method includes transmitting to a serving base station an idle mode entry request message in a message for requesting connection of an MBS service, receiving a service response message including response information for the idle mode entry request from the serving base station Transmitting a service confirmation message to the serving base station, and performing a service connection and an idle mode entry operation according to the received response message.

IEEE 802.16, MBS, Idle mode

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an efficient multimedia data transmission method considering an idle mode terminal receiving a multimedia service,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a multicast broadcast service (MBS), and more particularly, to a method for effectively transmitting and receiving multimedia services in consideration of idle mode switching of a terminal.

A terminal receiving a broadcast or MBS service in a wireless communication network obtains information on a service through higher-level procedures with a server providing the service to start the service. When the terminal decides to receive the service, the server transmits the data to the area to which the terminal belongs. The terminal can receive the service from the base station through the connection procedure with the base station located in the area.

More specifically, data transmission between a base station and a mobile station (MS) in a broadband wireless access system is performed through a "service flow ". The service flow includes an SF ID (service flow identifier) identifying a corresponding service flow between a base station and an MS, a CID (connection identifier) identifying a connection conveying service flow traffic, And quality of service (QoS) parameters related to the quality of service.

Generally, the service flow forms a one-to-one connection between the base station and the MS. However, the MBS used for transmitting MBS data in an IEEE 802.16 system features a point-to-multipoint service that transfers data from one source to multiple recipients. Therefore, the base station delivers the same data to multiple MSs through one service flow.

That is, when generating the MBS service flow of the base station and the MS, the base station grants the same CID to the MSs requesting MBS data reception so that the same MBS data can be simultaneously received by several MSs. The coverage that can provide service by giving one CID to multiple MSs is called MBS zone.

The MBS zone can be composed of several base stations. In a MBS zone, several base stations can provide the same service in a plurality of cells through one service CID. Because of this nature, the MBS typically delivers data common to multiple recipients across multiple base stations from one source.

In order to start the MBS service, the UE establishes a connection with the BS through a dynamic service addition (DSA) process. Through the connection setup, the user receives the connection identifier and QoS information.

Among the information used for the MBS, the configuration of the MBS_MAP message is shown in Table 1 below.

The MBS_MAP message is information that is sent from the base station to the terminal to receive the service and transmits information for reading the service. The MS receiving the MBS_MAP message can confirm the service point of the MBS through the additional information such as MBS_DATA_IE or Extended_MBS_DATA_IE.

The MBS_DIUC_Change_Count field may be used to indicate a change in the burst profile used for multi-base station MBS data. If the MBS_DIUC_Change_Count is changed, the UE has to wait until the DCD message is received unless the DLV file TLV is included in the MBS_MAP.

The MBS_DATA_IE designates an area to which the current MBS data is allocated and an area to which the MBS data is to be allocated next. This allows the user to receive data at the present time and to know the allocation area to be read next time.

Next, the idle mode will be described.

The idle mode is a mechanism for supporting the UE to periodically receive the downlink broadcast traffic transmission without registering in a specific base station even if the UE wanders a wireless link environment composed of multiple BSs over a wide area. That is, the terminal in the idle mode does not have to comply with the requirements for handover or general MAC operation.

However, the mobile station in the idle mode may check whether it is called from the base station at predetermined time intervals. Thus, the idle mode provides a simple and appropriate way to notify for pending downlink traffic to the terminal, and removes the air interface and network handover traffic from the inactive terminal, .

In addition, the terminal restricts the terminal activity to scan in the discrete period so that the terminal can conserve power and operational resources. The idle mode terminal returns all connection identifiers (CIDs), management CIDs (MCIDs), and Internet Protocol (IP) addresses.

Hereinafter, an example of a procedure in which the UE enters the idle mode and operates in the conventional IEEE 802.16e system will be described with reference to FIG.

Referring to FIG. 1, a UE initially transmits a de-registration request (hereinafter referred to as "DREG-REQ") message to a serving BS to enter an idle mode in a normal mode (S110).

Upon receiving the DREG-REQ message, the serving base station may exchange information of the serving base station and the mobile station in a paging controller (S120).

Next, the serving base station may transmit a de-registration command (hereinafter referred to as "DREG-CMD") to the terminal (S130).

Upon receiving the DREG-CMD message from the serving BS, the UE confirms that the request for the entry into the idle mode has been successfully accepted, and enters the idle mode (S140).

The paging controller can perform a paging procedure for searching for the terminal when a call or an external packet is received in step S150.

Here, the paging procedure is a function for allowing a terminal to receive traffic by informing a terminal of the arrival of pending downlink traffic through a base station or a specific network entity for a specific terminal in an idle mode, and transitioning to a normal mode state.

For this, the paging controller can inform the serving base station of the arrival of the traffic using the information stored in the step of exchanging the information of the mobile station and the serving base station (S120). Accordingly, the serving BS may transmit a paging message (MOB_PAG-ADV) informing the MS of the arrival of the traffic.

Upon receiving the paging message from the serving base station, the mobile station checks the message and enters the normal mode when it has paged itself (S170) to perform communication with the base station (S180). A terminal that enters the normal mode can communicate with a base station.

In addition, when the UE moves to another cell located in the same MBS zone in the idle mode, the UE does not newly establish a connection for MBS. However, if the UE moves to another MBS zone, it can receive the MBS by resetting the connection for MBS.

However, when transmitting the MBS data in the mobile communication network, the MBS network needs a level of modulation and coding (MCS) that all terminals receiving the MBS data in the cell can receive error- Scheme).

Here, the MBS network is an entity that receives data from an MBS content provider and delivers the MBS data to a serving base station in charge of the terminal so as to be transmitted to a terminal receiving the service, thereby distributing the MBS data It says. Typical examples include an MBS server, an MBS gateway, or an MBS controller.

The terminal desiring to receive the multimedia service such as MBS independently performs the connection of the multimedia service and the entry into the idle mode. However, when receiving an MBS, which is a service only for downlink reception, the UE enters an idle mode in order to save power after service connection.

Accordingly, there is a need for a method for rapidly performing the two functions in a single procedure without independently performing a connection to a multimedia service and entering an idle mode, in order to save resources of a wireless resource and a terminal of the network.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems of the related art, and it is an object of the present invention to provide a MBS transmission / reception method in which a terminal enters a quick idle mode and thereby saves power of a terminal.

It is another object of the present invention to provide an MBS transmission / reception method for reducing waste of radio resources and enabling efficient use.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the invention, unless further departing from the spirit and scope of the invention as defined by the appended claims. It will be possible.

According to an aspect of the present invention, there is provided a method of receiving a multimedia service in consideration of an idle mode entry of a UE, the method comprising: receiving an MBS service request message including idle mode entry request information and transmitting the MBS service request message to a serving BS; Receiving a service response message including response information for the idle mode entry request information from the serving base station and transmitting a service acknowledgment message to the serving base station, And performing an idle mode entry operation.

In this case, the message for requesting connection of the multimedia service is a dynamic service addition request message (DSA-REQ), the service response message is a dynamic service addition response message (DSA-RSP) Acknowledgment message (DSA-ACK).

In addition, the message for requesting connection of the multimedia service may further include information about a time point at which the terminal desires to enter the idle mode.

In addition, the message for requesting connection of the multimedia service may further include at least one of information about a paging controller and information about a paging cycle.

The idle mode entry request information may be included in the service request message in the form of an idle mode support parameter field.

In addition, the message for requesting connection of the multimedia service may further include mobility information of the terminal.

In addition, the response information for the idle mode entry request may indicate whether or not the terminal can enter the idle mode at a desired time.

The service response message may further include at least one of a reason for the entry failure and a possible entry time when the terminal can not enter the idle mode at a desired time.

According to another aspect of the present invention, there is provided a method of transmitting a multimedia service considering an entry of an idle mode of a mobile station in a serving base station, Receiving a service response message including idle mode entry information from a terminal desiring connection to the specific multimedia service among the at least one terminal capable of receiving the service request message including support information; And transmitting a service confirmation message to the desired terminal.

Here, the service request message is a dynamic service addition request message (DSA-REQ), the service response message is a dynamic service addition response message (DSA-RSP), the service confirmation message is a dynamic service addition acknowledgment message ).

In addition, the service connection request message may further include information about a time point at which the terminal desires to connect to the idle mode proposed by the serving BS.

In addition, the service response message may further include information on an idle mode entry time point requested by the terminal requesting the connection.

Also, the idle mode entry information may be included in the service response message in the form of an idle mode support parameter field.

In addition, the service confirmation message may further include whether the serving base station is permitted to enter the idle mode entry time requested by the terminal.

In addition, the service connection request message further includes information on whether or not the paging group is supported, and the service response message may further include mobility information of the mobile station.

According to another aspect of the present invention, there is provided a method for entering an idle mode, which includes receiving an MBS service of a mobile station, , Receiving an idle mode switching response message including response information for the MBS service connection request from the serving base station, and performing a multimedia service connection and an idle mode entering operation according to the received response message .

Here, the idle mode change request message may be a DREG-REQ message and the idle mode change response message may be a DREG-CMD message.

In addition, the service connection request information may be included in a De-Registration_Request_Code field of the de-registration request message.

In addition, the deregistration command message may further include at least one of a service flow parameter and CS parameter encodings.

The idle mode changeover response message may include at least one of a location information update based on the reception quality of the service, a feedback transmission to the serving base station according to the reception quality of the service, And a service connection termination notification to the serving base station when the connection of the service is terminated.

According to the embodiments of the present invention, the following effects are obtained.

First, since the connection establishment procedure of the multimedia service of the terminal and the idle mode entry procedure are simplified, it is possible to quickly enter the idle mode of the terminal and thereby save power of the terminal.

Second, it is possible to efficiently use radio resources because the waste of radio resources is reduced by simplifying the process of entering the service connection and idle mode.

The effects obtained by the present invention are not limited to the above-mentioned effects, and other effects not mentioned can be clearly understood by those skilled in the art from the following description will be.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for informing a network of a reception quality of a MBS data and whether a reception state is changed by a terminal.

In the following embodiments, elements and features of the present invention are combined in a predetermined form. Each component or feature shall be considered optional unless otherwise expressly stated. Each component or feature may be implemented in a form that is not combined with other components or features. It is also possible to construct some embodiments of the present invention by combining some of the elements and / or features. The order of the operations described in the embodiments of the present invention may be changed. Some configurations or features of certain embodiments may be included in other embodiments, or may be replaced with corresponding configurations or features of other embodiments.

Herein, the embodiments of the present invention have been described with reference to the data transmission / reception relationship between the base station and the terminal. Here, the BS has a meaning as a terminal node of a network that directly communicates with the MS. The specific operation described herein as performed by the base station may be performed by an upper node of the base station, as the case may be.

That is, it is apparent that various operations performed for communication with a terminal in a network composed of a plurality of network nodes including a base station can be performed by a network node other than the base station or the base station. A 'base station' may be replaced by terms such as a fixed station, a Node B, an eNode B (eNB), an access point, and the like. The term 'terminal' may be replaced with terms such as User Equipment (UE), Mobile Station (MS), and Mobile Subscriber Station (MSS).

Embodiments of the present invention may be implemented by various means. For example, embodiments of the present invention may be implemented by hardware, firmware, software, or a combination thereof.

For a hardware implementation, the method according to embodiments of the present invention may be implemented in one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs) , Field programmable gate arrays (FPGAs), processors, controllers, microcontrollers, microprocessors, and the like.

In the case of an implementation by firmware or software, the method according to embodiments of the present invention may be implemented in the form of a module, a procedure or a function for performing the functions or operations described above. The software code can be stored in a memory unit and driven by the processor. The memory unit may be located inside or outside the processor, and may exchange data with the processor by various well-known means.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention, and are not intended to limit the scope of the invention.

Multicast and broadcast services (MBS), MBS services (MBS), or multimedia services (MBS) are associated with service flows. The multimedia service flow is not dedicated to a particular terminal and can be transmitted from the base station to the terminal regardless of the mode of the terminal.

At the start of the service, the base station can establish the MBS service by creating the MBS service flow. The mapping of the MBS service flow identifier (MBS ID) to the connection indicator (CID) is notified to all base stations belonging to the same MBS zone.

When the terminal is registering with the base station to receive the MBS service, the terminal must initiate a dynamic service addition (DSA) procedure for the MBS service to inform the base station that the terminal is a customer of the particular MBS service . To this end, the terminal transmits and receives control information to and from the base station through a message (DSA-REQ / RSP / ACK).

Through the transmission / reception of control information using the messages, the UE acquires an encryption key for MBS data reception and a connection IDentifier (CID) for radio resource mapping. The information thus obtained is used to initiate bidirectional upper layer communication between the base station and the backbone network when the MBS service is configured. If the MBS service is successfully configured, the terminal may reuse the same configuration without reconfiguration when moving to another base station.

First Embodiment

The first embodiment of the present invention provides a method for transmitting a service request message to a serving base station by including the idle mode entry request information in the service request message.

FIG. 2 is a diagram illustrating a fast MBS service connection and idle mode entry procedure according to the first embodiment of the present invention.

Referring to FIG. 2, a mobile station attempts to enter an idle mode in the same procedure while performing a connection procedure for a specific MBS service. To do so, the UE may transmit an MBS service request message including information for requesting the idle mode entry to the serving BS (S210).

The MBS service request message is preferably a dynamic service addition request (DSA-REQ) message. Hereinafter, in the present embodiment, the MBS service request message is regarded as DSA-REQ.

An idle mode entry request information included in the service request message (DSA-REQ) will be described in more detail with reference to Tables 2 to 4 below.

Syntax Size (size) Remarks DSA-REQ_Message_Format () {   Management Message Type = 11 8 bits   Transaction ID 16 bits   TLV Encoded Information variable TLV specifics }

Table 2 above shows the format of the DSA-REQ message, and it can be seen that TLV encoded information (TLV encoded information) can be included. The DSA-REQ message may be added to the service flow encoding as shown in Table 3 below.

Type Parameter One Service Flow Identifier 2 CID 3 Service Class Name 4 Reserved MBS service 5 QoS Parameter Set Type ... . ... . 49 Idle Mode support

Referring to Table 3, the idle mode entry request information may be included in the service flow encoding, and may be added to the type field 49, for example. Previously, type 49 is used for PSC assignment, but in the present embodiment, it may be modified as shown in Table 4 below to include the idle mode entry request information.

Type Length Value Scope [145/146] .49
1.49 One 0: idle mode support
1: no action DSA-REQ, DSA-RSP
REG-REQ, REG-RSP

Also, the DSA-REQ message may include information about a time point at which the UE desires to enter the idle mode. That is, the MS can inform the serving BS of whether the UE enters the idle mode immediately after the connection of the MBS service is established or enters the idle mode after a predetermined time therefrom. The predetermined time may be displayed in the form of an offset based on the transmission or reception time of the message (DSA-REQ).

In addition, the DSA-REQ message may further include information on a paging controller proposed by the terminal, or information about a paging cycle. The information that the paging controller wants to maintain may be operational information that is usefully used by the terminal to quickly re-enter the network in the idle mode in the future.

If a paging group considering the mobile speed of the UE is supported in an environment composed of a plurality of base stations including the serving base station and a paging controller, the DSA-REQ message includes mobility of the UE, More information can be included. Here, the mobility information may include at least one of the moving speed, moving direction and current position of the terminal.

Also, a paging group refers to a group consisting of a plurality of base stations logically separated. The purpose of this group is to provide a neighbor coverage area in which a terminal can be pageed in downlink if there is no downlink traffic to the terminal although it is not necessary for the terminal to transmit predetermined data through the uplink.

It is desirable that the paging group satisfies the condition that the terminal is large enough to hold most of the time in the same paging group and must be small enough to maintain the paging load at an appropriate level.

Therefore, if the paging group considering the moving speed of the terminal is supported, if the mobility of the terminal is known to the network, paging that predicts the movement of the terminal can be performed more efficiently. The information about the mobility of the terminal may be calculated by the terminal itself when the terminal is provided with the GPS module, and may be provided to the base station. Otherwise, the information may be calculated by receiving the location information from the base station.

Upon receiving the DSA-REQ message, the serving BS may transmit a service response message including response information for the idle mode entry request information to the MS in step S220. The service response message is preferably a dynamic service addition response (DSA-RSP) message. Hereinafter, in the present embodiment, the service response message is regarded as DSA-RSP.

The response information for the idle mode entry request information may indicate whether the serving base station permits the idle mode entry request of the terminal. If the DSA-REQ message includes information on a desired entry time of the idle mode, the serving BS may indicate whether the access terminal enters the idle mode at that time.

If the response information for the idle mode entry request indicates that the UE can not enter the idle mode at a desired time, the DSA-RSP message may include at least one of a reason And may further include information. The possible entry point may be displayed in the form of an offset based on the time at which the serving base station transmits the DSA-RSP message.

For example, if the terminal attempts to enter the idle mode at the same time as the service connection, the service setting is permitted but the entry into the idle mode exceeds the maximum terminal capacity that can be handled by the paging controller In the case of the present invention.

Accordingly, the serving BS can notify the MS that it is impossible to request an entry into the idle mode immediately after the service connection of the MS, and transmit the DSA-RSP message including the reason. The terminal can inform the terminal of the time when the terminal can enter the idle mode with an offset. Accordingly, the terminal may enter the idle mode after the offset time.

Finally, the MS transmits a service confirmation message to the serving BS, and performs a service connection and an idle mode entry operation according to the received response message (S230). Here, the service confirmation message is preferably a Dynamic Service Addition Acknowledgment (DSA-ACK) message.

Second Embodiment

The second exemplary embodiment of the present invention provides a method for transmitting a message inquiring whether or not a serving MBS service connection is established to a terminal, including information for inquiring whether the MBS service is to be entered into the idle mode.

FIG. 3 is a diagram illustrating a quick MBS service connection and idle mode entry procedure according to a second embodiment of the present invention.

Referring to FIG. 3, the serving BS attempts to allow an MS to enter an idle mode in the same procedure while performing an MBS service connection procedure. For this purpose, the serving BS can transmit a service request message to one or more MSs that are likely to receive a specific MBS service in its coverage area, asking whether to establish connection of the specific MBS service.

At this time, the service request message may include idle mode support information for inquiring whether the terminal receiving the message enters the idle mode (S310).

The service request message is preferably a dynamic service addition request (DSA-REQ) message. In the present embodiment, the service connection request message is regarded as DSA-REQ. This can take the form as shown in Table 4 described in the first embodiment.

In addition, the DSA-REQ message may further include information on a time point at which the at least one terminal enters the idle mode proposed by the serving BS. That is, it is possible to suggest to the at least one terminal whether to allow the at least one terminal to enter the idle mode immediately after the connection of the MBS service is established through the entry point information, or to enter the idle mode after a predetermined time thereafter can do. The predetermined time may be displayed in the form of an offset based on the transmission or reception time of the message (DSA-REQ).

If a paging group considering the mobile speed of the mobile station is supported in an environment composed of a plurality of base stations including the serving base station and a paging controller, the DSA-REQ message may include a paging group And may request mobility information from at least one terminal that has received the message.

In step S320, the MS receiving the DSA-REQ message transmits a service response message for the MBS service and transmits the service response message including idle mode entry information indicating whether the MBS service is to enter the idle mode.

The service response message for connecting the specific MBS service is preferably a dynamic service addition response (DSA-RSP) message. Hereinafter, in the present embodiment, the service response message is regarded as a DSA-RSP.

Also, the idle mode entry information may have a form of idle mode support field in service flow encoding as shown in Table 4, and the 49th type column may be used as described above.

Here, if the UE desires to enter at a time other than the idle mode entry point proposed by the serving BS, the UE may transmit time information indicating an appropriate entry time requested by the serving BS to the serving BS in the DSA-RSP message .

In other words, it is preferable not to switch to the idle mode when the UE is using another service while receiving the specific MBS service. In this case, the idle mode entry information is set to 1 (no action) and the DSA- Lt; / RTI >

In addition, when entering the idle mode immediately after establishing the connection to the specific MBS service, the DSA-RSP message can be transmitted by setting the idle mode entry information to 0 (idle mode support). If the UE desires to enter the idle mode after a certain time due to the current or upcoming service, it sets an offset in the DSA-RSP message and transmits the offset to the serving base station to enter the idle mode after the offset have.

Also, if the paging group support information is included in the DSA-REQ message in the environment where the paging group considering the mobile speed of the terminal is supported as described above, the mobility information of the terminal is transmitted to the DSA- -RSP message to the serving BS. The method of obtaining the mobility information may be assisted by a GPS or a base station as described in the first embodiment.

Next, the BS transmits a service confirmation message to the MS in response to the request of the MS (S330). The service confirmation message is preferably a dynamic service addition acknowledgment message (DSA-ACK). If the UE transmits the DSA-RSP message including information about the idle mode entry time requested by the UE in step S320, the serving BS can also be included in the DSA-ACK message.

At this stage, the serving BS may reject or modify the request of the MS, and the MS must follow the final message of the BS. If not, the MS may transmit a modification control message (DSC-REQ) to the serving BS to modify or reject the request of the final message of the BS.

Third Embodiment

The third exemplary embodiment of the present invention provides a method for transmitting an idle mode entry request message to a serving base station by including the MBS service connection request information in the idle mode entry request message.

FIG. 4 is a diagram illustrating a procedure for connecting a fast MBS service and entering an idle mode according to a third embodiment of the present invention.

Referring to FIG. 4, a mobile station attempts to connect an MBS service in the same procedure while performing an entry procedure into an idle mode. To this end, the MS transmits MBS service connection request information to a message for requesting idle mode switching to the serving BS in step S410.

Preferably, the message for requesting the idle mode switching is a DREG-REQ message. In addition, the MBS service connection request information may be included in the message by modifying a part of the DREG-REQ message format. This will be described with reference to Table 5 below. Table 5 shows the DREG-REQ message format.

Syntax size Remarks DREG-REQ message_Format () {   Management Message Type = 49 8 bits


De-Registration_Request_Code


8 bits 0x00 = SS deregistration request from BS and network
0x01 = MS request for deregistration from serving BS and initiation of idle mode
0x02 = MS response for unsolicited deregistration initiated by BS
0x03 ~ 0xFF = Reserved   TLV encoded parameters variable }

Referring to Table 5, the De-Registration_Request_Code syntax is not used after 0x03. By using this, contents such as "0x03 = MS request for deregistration from serving BS and initiation of idle mode and connection request" can be added at 0x03. In this way, the request for entering the idle mode and the connection request of the MBS service can be made in one procedure.

Upon receiving the deregistration request message including the MBS service connection request information, the serving base station may transmit an idle mode change response message including response information for the service connection request to the MS in response thereto ). Preferably, the idle mode switch response message is a deregistration command (DREG-CMD).

In addition, the response information for the service connection request may include information such as a service flow parameter and a CS parameter encodings transmitted through a general service connection procedure.

In addition to the response information for the service connection request, the DREG-CMD message may further include information about an operation that the serving BS additionally requests to the terminal when the terminal is connected to the MBS service.

For example, if the data reception quality of the MBS service is below a predetermined level, information requesting the terminal to perform location update may be included. Here, the location update is an operation of the terminal for increasing the hit ratio at the time of paging to the terminal that has entered the idle mode. In this case, when the terminal moves to a new area, .

As another example, the MS may be configured to transmit feedback on the data reception quality of the MBS service to the serving BS. In addition, when the connection of the MBS service is terminated, the terminal may explicitly notify the serving base station of service connection termination. Information on the additional operation request may also be included in the DREG-CMD message.

Next, the MS receives the DREG-CMD message from the serving BS, and performs connection establishment and idle mode entry according to the received DREG-CMD message (S430).

FIG. 1 shows a process in which a UE enters an idle mode in a conventional IEEE 802.16e system.

FIG. 2 illustrates a process in which MBS service connection and entry into an idle mode according to the first embodiment of the present invention are performed together in a single procedure.

FIG. 3 illustrates a process in which MBS service connection and entry into an idle mode according to a second embodiment of the present invention are performed together in a single procedure.

FIG. 4 illustrates a process in which MBS service connection and entry into an idle mode are performed together in one procedure according to the third embodiment of the present invention.

Claims (25)

A method for a terminal to receive a Multicast and Broadcast Service (MBS) Transmitting the service request message for requesting the connection of the MBS to the serving BS, including the idle mode entry request information; Receiving, from the serving base station, a service response message including response information for the idle mode entry request information; Transmitting a service confirmation message to the serving base station; And And performing a service connection and an idle mode entry operation according to the received response message, The service request message further includes information on the idle mode entry time, Wherein the idle mode entry time information is information indicating a time point at which the UE enters an idle mode, considering an entry into an idle mode. The method according to claim 1, The service request message is a dynamic service addition request message (DSA-REQ) Wherein the service response message is a dynamic service addition response message (DSA-RSP) Wherein the service confirmation message is a dynamic service addition acknowledgment message (DSA-ACK). delete The method according to claim 1, Wherein the response information for the idle mode entry request information further includes information on whether the UE can enter the idle mode at a time indicated by the idle mode entry time information. 5. The method of claim 4, Wherein the service response message further includes information on at least one of a reason for the entry failure and a possible entry time when the terminal is unable to enter the idle mode at a time indicated by the idle mode entry time information MBS receiving method considering idle mode entry. The method according to claim 1, Wherein the idle mode entry point information is displayed in the form of an offset. The method according to claim 1, Wherein the idle mode entry request information comprises: Wherein the idle mode support parameter field is included in the service request message in the form of an idle mode support parameter field. The method according to claim 1, The message for requesting the connection of the MBS service, Further comprising at least one of information on a paging controller and information on a paging cycle of the terminal, the information being desired to be maintained by a paging controller. The method according to claim 1, The service request message includes: Further comprising mobility information of the UE, the MBS receiving method considering an idle mode entry. 10. The method of claim 9, The mobility information includes: Wherein the mobile station includes at least one of a moving speed, a moving direction, and a current position of the mobile station. A method of a serving base station transmitting an MBS service to a terminal, Transmitting a service request message including idle mode support information to one or more terminals capable of receiving a specific MBS service; Receiving a service response message including idle mode entry information from a first one of the at least one possible terminal; And And transmitting a service confirmation message to the first terminal, The service request message further includes information on the idle mode entry time, Wherein the idle mode entry time information is information indicating a time point at which the UE enters the idle mode, the idle mode entry time considering the entry of the UE. 12. The method of claim 11, The service request message is a dynamic service addition request message (DSA-REQ) Wherein the service response message is a dynamic service addition response message (DSA-RSP) Wherein the service confirmation message is a dynamic service addition acknowledgment message (DSA-ACK). 12. The method of claim 11, Wherein the service request message is a message for inquiring at least one terminal capable of receiving the specific MBS service whether or not the specific MBS service is connected, Wherein the idle mode support information is information for inquiring whether or not at least one terminal capable of receiving the specific MBS service enters an idle mode, Wherein the service response message is a message for notifying whether the first terminal is connected to the specific MBS service, Wherein the idle mode entry information is information on whether the first terminal enters an idle mode or not. 12. The method of claim 11, The service request message includes: Further comprising information about a time point at which the first terminal enters an idle mode, which is proposed by the serving BS, in consideration of entry into an idle mode of the AT. 12. The method of claim 11, The service response message includes: Further comprising information on an idle mode entry time requested by the first terminal, The service confirmation message includes: Further comprising determining whether the serving BS is allowed to enter the idle mode requested by the first MS. 16. The method of claim 15, Further comprising the step of receiving a modification control message from the first terminal according to a response of the serving base station to the idle mode entry time requested by the first terminal. 12. The method of claim 11, The service request message includes: And further includes information on whether or not the paging group is supported, The service response message includes: Further comprising mobility information of the MS, the MBS transmission method considering an entry of the MS into an idle mode. 18. The method of claim 17, The mobility information includes: Wherein the mobile station includes at least one of a moving speed, a moving direction, and a current position of the mobile station. 12. The method of claim 11, Wherein the idle mode entry information comprises: Wherein the idle mode support parameter field is included in the service response message in the form of an idle mode support parameter field. A method for a terminal to perform an idle mode entry, Transmitting MBS service connection request information to the serving BS in the idle mode change request message; Receiving from the serving BS an idle mode change response message including response information for the MBS service connection request information; And Performing an MBS service connection and an idle mode entry operation according to the received response message, Wherein the idle mode switching response message further includes information for requesting the terminal to perform an additional operation when the terminal is connected to the MBS service. 21. The method of claim 20, The idle mode change request message is a DREG-REQ message, Wherein the idle mode switching response message is a DREG-CMD message. 22. The method of claim 21, The service connection request information includes: (De-Registration_Request_Code) field of the de-registration request message. 22. The method of claim 21, Wherein the deregistration command message comprises: Wherein the method further comprises at least one of a Service Flow Parameter and CS parameter encodings. delete 22. The method of claim 21, The additional operation may include: At least one of a location information update based on the reception quality of the service, a feedback transmission to the serving base station according to the reception quality of the service, and a service connection end notification to the serving base station when the connection of the service is terminated A method for entering an idle mode considering reception of an MBS service.

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