KR101225762B1 - Apparatus and Method for controlling of contents monitoring in Broadcast Multicast Service system - Google Patents

Abstract

An apparatus and method for controlling broadcast content monitoring in a BCMCS service system are disclosed. An example of a method of controlling broadcast content monitoring by a terminal in a broadcast multicast service (BCMCS) service system for this purpose includes receiving broadcast scheduling information including broadcast area information on the broadcast content, and receiving the overhead message through an overhead message. Periodically receiving location information to which the terminal belongs, and determining whether to monitor the broadcast content according to whether the broadcasting area information and the location information match each other, and whether the area to which the terminal belongs is in a BCMCS service area. By making judgments, unnecessary broadcast monitoring can be saved to save power.

BCMCS, Broadcast, Content, Monitoring, Location, Schedule, Overhead, Message

Description

Apparatus and Method for controlling of contents monitoring in Broadcast Multicast Service system

The present invention relates to a BCMCS (Broadcast Multicast Service) service system. More particularly, the broadcast content monitoring is controlled to effectively provide service area information to a terminal in a BCMCS service system so that broadcast content can be received even outside a service coverage area. It relates to an apparatus and a method.

BCMCS (Broadcast Multicast Service) is a standardization work in 3GPP2, and provides a single link to multiple users for the purpose of transmitting multimedia data. It can eliminate unnecessary repetitive transmission of the same information in a wireless network. There is this.

The BCMCS service having such an advantage transmits broadcast contents to multiple subscribers simultaneously using a mobile communication system. In particular, BCMCS service uses the same frequency (FA) as the service provided in the aforementioned mobile communication system, so in order to minimize the impact on the existing unicast service, it is common to provide a large amount of content in the midnight time zone. to be.

In order for the terminal to receive the BCMCS service, if the terminal subscribes to the BCMCS service, the BCMCS controller transmits information on the broadcast schedule of the subscription service to the terminal through the IA (Information Acquisition) procedure. Upon receiving the scheduling information, the corresponding terminal stores the scheduling information and starts broadcasting monitoring when the broadcast time comes.

In this case, the following problems may occur when the terminal is outside the service area. That is, according to the present BCMCS service system architecture, the terminal does not determine whether the area in which the terminal is located is the BCMCS service area, and starts to monitor the broadcast contents unconditionally at the broadcast time according to the broadcast scheduling information stored through the IA. Accordingly, if the terminal is out of the service area, the terminal can not receive the broadcast service, and monitoring is continuously performed until the end of the broadcast time, resulting in a significant increase in power consumption.

The present invention was devised to solve the above problems, and an object of the present invention is to provide an apparatus and method for a terminal to control monitoring of broadcast content in a BCMCS service system.

Another object of the present invention is to provide an apparatus and method for controlling broadcast content monitoring that can effectively check whether a terminal is located in a service area in a BCMCS service system.

In a BCMCS (Broadcast Multicast service) service system of one embodiment of the present invention, a method of controlling broadcast content monitoring by a terminal includes: (a) receiving broadcast scheduling information including broadcast area information about the broadcast content; (b) periodically receiving location information to which the terminal belongs via an overhead message; And (c) determining whether to monitor the broadcast content according to whether the broadcast area information and the location information match each other.

On the other hand, in the broadcast multicast service (BCMCS) service system of one embodiment of the present invention, the broadcast content monitoring control method includes: (a) a BCMCS controller via the information acquisition (IA) message and the broadcast content information and the broadcast content; Transmitting local information on which the broadcast is performed; And (b) the terminal receiving and storing broadcast scheduling information including broadcast region information on the broadcast content, receiving the location information to which the terminal belongs via an overhead message, and then broadcasting the broadcast region information and the position information. If does not match, characterized in that it comprises the step of stopping the monitoring of the broadcast content.

On the other hand, the apparatus for controlling broadcast content monitoring in a BCMCS (Broadcast Multicast service) service system of one embodiment of the present invention includes: a first receiver configured to receive the broadcast content; A second receiver configured to receive broadcast scheduling information including broadcast area information about the broadcast content; A third receiver periodically receiving the location information of the device through an overhead message from a base station; And a BCMCS client for determining whether to monitor the broadcast content according to whether the broadcast area information and the location information match each other.

According to the present invention, by additionally providing region-based regional information on the IA message in the BCMCS service system, it is possible to efficiently determine whether the region to which the terminal belongs is within the BCMCS service region, thereby reducing unnecessary broadcast monitoring. There is an effect to save.

In addition, according to the present invention, by determining whether the area to which the terminal itself belongs in the BCMCS service area in the BCMCS service system to reduce unnecessary broadcast monitoring, from the operator's point of view, in the initial stage of commercialization, the broadcast service infrastructure is built only in the required area and other areas In this case, the subscriber can receive the BCMCS service through unicast, thereby reducing the initial network construction cost.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments. For reference, in the following description, detailed descriptions of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention are omitted.

1 is a diagram illustrating a configuration of a BCMCS service system according to an embodiment of the present invention, and illustrates an example for a BCMCS service provided in a wireless communication system.

As shown in FIG. 1, the system includes a terminal 110 that provides a BCMCS service to a subscriber, a base station transmitter 120, a base station controller 130, a GAN 140, a PDSN 150, , An authentication server 160, a BCMCS content server 170, and a BCMCS controller 180.

In addition, an apparatus for controlling broadcast content monitoring in a broadcast multicast service (BCMCS) service system will be described in detail as an example of being implemented as the terminal 100.

The terminal 110 is a wireless terminal including a mobile communication terminal, a notebook computer, a personal digital assistant (PDA), and the like, which the user can carry and communicate with, and receives and displays broadcast contents.

The base station transmitter 120 transmits the broadcast content in the form of packet data to the terminal 110 through an air network. The base station transmitter 120 includes an interface for performing signal matching between itself and the base station controller 130, a CDMA demodulator / demodulator for performing a modulation and demodulation function of a CDMA channel, a transceiver, a radio frequency ) ≪ / RTI >

The base station controller 130 controls the operation of the base station transmitter 120. That is, data transmitted from the base station transmitter 120 is transmitted to the PDSN 150 through the GAN 140. In addition, the base station controller 130 has a radio channel allocation and release function for the terminal 110, a transmission output control function between the terminal 110 and the base station transmitter 120, soft handoff and hard handoff between cells. (Hard Handoff) Performs functions such as determining. In addition, the base station controller 130 may further include a packet control function (PCF) for transmitting packet data.

General ATM Switch Network (GAN) 140 is connected to the base station controller 130 performs a routing function of the packet data transmitted and received in the BCMCS system. That is, it serves as a switch for performing a soft handoff between the base station controller 130 to the terminal 110 connected to the traffic, and provides a packet data service in conjunction with the PCF. In this case, a path between the PDSN 150, the authentication server 160, and the data location register (not shown) is set for the packet data service.

The PDSN 150 performs a function of providing a packet data service to the terminal 110. The PDSN 150 is an evolution of an inter-working function (IWF) used to support data communication in a second generation (2G) mobile communication system.

The authentication server 160 performs particle authentication when the authenticated terminal 100 requests packet data service and encrypts data using an encryption key in order to transmit and receive packet data through the PDSN 350 Function of managing the encryption level (Encryption Level), and collecting charging data for charging.

The BCMCS controller 170 provides and manages session information of the terminal 110 to the terminal 110, the PDSN 150, and the BCMCS content server 180. In addition, it receives the subscriber profile from the authentication server 160, grants the service authority to the terminal 110, and performs the function of authenticating the BCMCS content providers. In addition, the BCMCS controller 170 receives the BCMCS content from the BCMCS content server 180 or the BCMCS content list so that the terminal 110 who wants the BCMCS service can select the desired BCMCS content. In this case, the BCMCS controller 170 provides scheduling information of a broadcast service through an IA message. The BCMCS controller 170 provides a field (for example, area ID based on area) to display a broadcastable area for each broadcast content. Add.

The BCMCS content server 180 collects one or more BCMCS content contents and encrypts and stores the collected BCMCS content. In addition, the BCMCS content server 180 finally converts the encrypted BCMCS content into an IP-based multicast stream and transmits it to the PDSN 150 using a multicast transmission technique. Here, the multicast transmission scheme is a transmission scheme for simultaneously servicing a single stream to a plurality of clients, and is a data transmission scheme suitable for a broadcast service capable of reducing input / output (I / O) and network bandwidth of a server.

A method of providing a broadcast service to a terminal in the BCMCS service system configured as described above will be described with reference to FIG. 2.

First, the terminal 110 wanting the BCMCS service checks the BCMCS content type and schedule through the BCMCS controller 170 or the advertisement server, the SMS server, the WAP, the web application, and the like (S310). Subsequently, the terminal 110 registers the desired content (S320). The content recording process is not necessarily required, and the process of step S320 may be performed without performing the process of step S310.

The BCMCS controller 170 then transmits the flow identifier information, the IP address information, the port information, the header information, the transport / application protocol information, the encryption key information, and the like to the terminal 110 through an IA (Information Acquisition) message (S330). Specifically, the BCMCS controller 170 adds a field to the IA message to indicate the regional area where each broadcast content is broadcast. For example, this field uses an area identifier (Area ID) for indicating area information where broadcast content is provided.

3 is a diagram illustrating broadcast program information included in an IA message according to an embodiment of the present invention.

Referring to FIG. 3, a program ID field for program identification is provided for broadcast program information, and a subprogram field belonging to a corresponding program ID exists in a lower field of the program ID field. The sub program field is used when the program is transmitted in plurality. The subfield of this subprogram field includes a subprogram number field indicating the number of subprograms for the program ID, and the subfield of the subprogram number field includes each subprogram identifier field. Each sub program identifier field includes a broadcast time, first information, and last information. A 'No monitoring' field is added to prevent unnecessary monitoring. The subfield of the 'No monitoring' field includes an area ID field. By providing the region information in which the corresponding broadcast content is provided in the region identifier field, the terminal 110 does not perform unnecessary monitoring unless it corresponds to the region information to which it belongs. For example, when using a network ID, a maximum of 65 bits and at least 7 bits are required to represent all 65 control stations (in a CDMA 2000 1x system) nationwide. When using the area ID, the area of Seoul can be represented as 1, the area of Incheon 2, the area of Busan 3, etc., and up to 32 areas can be represented with only 4 bits.

In FIG. 2, the terminal 110 receives information on the BCMCS broadcast content that is currently being serviced periodically through the overhead message from the base station transmitter 120 (S340). In particular, in the present invention, the terminal 110 periodically updates the area identifier (Area ID) through such an overhead message (for example, 5.18 seconds) so that the area to which the terminal 110 belongs is an area where the corresponding broadcast content is provided. If it is not the area provided as a result of the confirmation, the monitoring should be stopped. An example of the overhead message is a sector parameter message transmitted from a base station, and uses a reserved field in the sector parameter message.

However, if the area is provided, the terminal 110 performs a registration process for requesting transmission of a desired flow (S350). That is, the terminal 110 determines the broadcast content to be received based on the received overhead message, and then transmits a flow request for the determined broadcast content to the base station transmitter 120. Thereafter, the terminal 110 receives the BCMCS content (S360).

Hereinafter, a configuration of a terminal for preventing unnecessary monitoring will be described.

4 is a diagram illustrating a configuration of a terminal according to an embodiment of the present invention.

As shown in FIG. 4, the terminal 110 includes an antenna 111, a transceiver 112, an MSM 113, a CPU 115, a memory 116, and a BCMCS client 114. Include.

The transceiver 112 receives the broadcast content signal by the base station transmitter 120 through the antenna 111. The transceiver 112 down-converts the received signal to generate an intermediate frequency (IF) signal. The IF signal is transmitted to a mobile station modem (MSM) 113 to filter, decode and A / D convert the baseband signal to generate a baseband signal.

In addition, the transceiver 112 receives the processed baseband signal or the outgoing IF signal from the MSM 115 and up-converts the radio frequency (RF) signal.

Furthermore, the receiver of the transceiver 112 is a first receiver for receiving broadcast content, a second receiver for receiving broadcast scheduling information including broadcast area information on the broadcast content, and a location of the device through an overhead message from a base station. It may be implemented to be divided into a third receiving unit for receiving information periodically.

The MSM 113 transmits the generated baseband signal to the speaker (audio data) or to the CPU 115 for further processing (video data). The MSM 113 also receives analog or digital voice data from the microphone, or other outgoing baseband signal (video data) from the CPU 115. The MSM 113 encodes, multiplexes, or digitizes the baseband signal to produce a processed baseband signal or IF signal.

CPU 115 is a microprocessor or microcontroller. The memory 116 is coupled to the CPU 115. Memory 116 may be comprised of random access memory (RAM). The CPU 115 executes a basic operating system (OS) program stored in the memory 116 to control the overall operation of the terminal 110. The CPU 115 may also execute other processes and programs residing in the memory 116. In addition, the CPU 115 may move data into or out of the memory 116 according to a request of an executing process. The CPU 115 is also coupled to the display. Such a display uses, for example, a liquid crystal display capable of displaying text and / or at least limited graphics from a web site. Alternatively, other types of displays may be used.

The BCMCS client 114 controls the monitoring related to the present invention in conjunction with the MSM 113 and the CPU 115, which will be described in more detail with reference to FIG. 5.

First, when the BCMCS controller 170 transmits broadcast content information as shown in FIG. 3 through an IA message, the BCMCS client 114 of the terminal 110 receives the broadcast content information and stores it in the memory 116. Then, when it is time to broadcast the broadcast content (usually 30 seconds before), the area identifier of the stored broadcast content information is compared with the area identifier in the last stored overhead message (S610). In this case, a reserved field of a sector parameter message is used as the overhead message.

As a result of the comparison, if the current region identifier matches the region identifier to which the broadcast content is to be served, the BCMCS client 114 performs broadcast monitoring (S620 and S650). However, as a result of the comparison, if the region identifiers do not match, the BCMCS client 114 determines that its location is out of the service area, stops monitoring of the broadcast, and requests the download of the broadcast content through unicast ( S630-S650).

By doing so, it is possible to reduce unnecessary broadcast monitoring by judging whether the area of the terminal itself is within the BCMCS service area, thereby saving power. In addition, for operators, it is possible to construct the broadcasting service infrastructure only in the required area at the initial stage of commercialization, and to allow the subscriber to receive the BCMCS service by unicasting in other areas, thereby reducing the initial network construction cost.

Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art to which the present invention pertains can implement the present invention in other specific forms without changing the technical spirit or essential features, The examples are to be understood in all respects as illustrative and not restrictive.

In addition, the scope of the present invention is specified by the appended claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts are included in the scope of the present invention. Should be interpreted as

In addition, the present invention is to control the broadcast content monitoring to receive the broadcast content outside the service coverage area by effectively providing the service area information to the terminal in the BCMCS service system, not only the possibility of commercialization or sales is sufficient It is an invention that is industrially applicable because it is practically evident.

1 is a diagram showing the configuration of a BCMCS service system according to an embodiment of the present invention.

2 is a flowchart illustrating a BCMCS service method according to an embodiment of the present invention.

3 is a diagram illustrating broadcast program information included in an IA message according to an embodiment of the present invention.

4 is a view showing the configuration of a terminal according to an embodiment of the present invention.

5 is a flowchart illustrating a broadcast content monitoring control method according to an embodiment of the present invention.

Claims (12)

delete A device for controlling broadcast content monitoring in a broadcast multicast service (BCMCS) service system, A first receiver configured to receive the broadcast content; A second receiver configured to receive broadcast scheduling information including broadcast area information about the broadcast content; A third receiver periodically receiving the location information of the device through an overhead message from a base station; And A BCMCS client configured to determine whether to monitor the broadcast content according to whether the broadcast area information and the location information match each other; The BCMCS client, And determining whether the broadcasting area information coincides with the location information by using an area ID. delete delete delete delete A method for controlling broadcast content monitoring by a terminal in a broadcast multicast service (BCMCS) service system, (a) receiving broadcast scheduling information including broadcast area information about the broadcast content; (b) periodically receiving location information to which the terminal belongs via an overhead message; And (c) determining whether to monitor the broadcast content according to whether the broadcast area information matches the location information; The broadcasting area information and the location information, Broadcast content monitoring control method, characterized in that indicated by the area ID (Area ID). delete A method for controlling broadcast content monitoring by a terminal in a broadcast multicast service (BCMCS) service system, (a) receiving broadcast scheduling information including broadcast area information about the broadcast content; (b) periodically receiving location information to which the terminal belongs via an overhead message; And (c) determining whether to monitor the broadcast content according to whether the broadcast area information matches the location information; (b) the location information of the step, And a reserved field of a sector parameter message transmitted from a base station. delete delete A method of controlling broadcast content monitoring in a broadcast multicast service (BCMCS) service system, (a) transmitting, by a BCMCS controller, the broadcast content information and region information on which the broadcast content is broadcast through an Information Acquisition (IA) message; And (b) the terminal receives and stores broadcast scheduling information including broadcast region information of the broadcast content, receives the position information to which the terminal belongs via an overhead message, and then the broadcasting region information and the position information coincide. If not, including the step of stopping monitoring of the broadcast content, The broadcasting area information and the location information, Broadcast content monitoring control method, characterized in that indicated by the area ID (Area ID).

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