KR100936196B1 - Apparatus and method for transmission of service guide in broadband wireless access system - Google Patents

Abstract

The present invention relates to an apparatus and method for delivering a service guide in a broadband wireless access system, the method comprising: transmitting a service guide request message to a multicast and broadcast service (MCBCS) server; receiving a service guide response message from the MCBCS server; Here, the service guide response message includes a mapping table of MAC layer name tags to application layer name tags for a broadcast channel, wherein the MAC layer name tag is a multicast connection identifier (MCID), and the application layer The name tag is a broadcast channel IP and includes a process of storing the mapping table, thereby eliminating the cause of the terminal having to maintain an awake state, and thereby power due to periodic uplink transmission in the awake state. It can prevent waste and waste of air resources necessary for signaling. Has the advantage.

MBS, MCBCS, Service, Broadcast Channel IP, Mapping Table, Service Guide

Description

Apparatus and method for delivering service guide in broadband wireless access system {APPARATUS AND METHOD FOR TRANSMISSION OF SERVICE GUIDE IN BROADBAND WIRELESS ACCESS SYSTEM}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a broadband wireless access system, and more particularly, to a mapping table of MAC layer name tags or IP layer name tags to application layer name tags for broadcast channels. TABLE 1, TABLE OF BROADCASTING, AUTHENTICATION INFORMATION, or a combination of a real broadcast channel name mapped to an application layer name tag and a service guide delivery device and method.

In general, communication systems have been developed mainly for voice services, and are gradually developing into communication systems capable of not only voice but also data services and various multimedia services. However, the voice-oriented communication system has not satisfied the rapidly increasing user's service needs due to the relatively small transmission bandwidth and high usage fee. In addition, due to the development of the communication industry and increasing user demand for Internet services, there is an increasing need for a communication system that can efficiently provide Internet services. As a result, it has been introduced into a broadband wireless access system for efficiently providing Internet services with broadband enough to meet the demand of rapidly increasing users.

The broadband wireless access system is a system for integrating and supporting not only voice but also various low speed and high speed data services and multimedia application services such as high definition video. The broadband wireless access system is based on a wireless medium using broadband such as 2GHz, 5GHz, 26GHz and 60GHz, in a mobile or fixed environment, public switched telephone network (PSTN), public switched data network (PSDN), internet network, IMT2000 network, It is a wireless communication system that can connect ATM (Asynchronous Transfer Mode) network and can support channel rates of 2Mbps or more. The broadband wireless access system may be classified into a broadband wireless subscriber network, a broadband mobile access network, and a high-speed wireless local area network (LAN) according to terminal mobility (fixed or mobile), communication environment (indoor or outdoor), and channel transmission rate. .

The wireless access method of the broadband wireless access system is being standardized by the International Organization for Standardization. The WiMAX system, one of the broadband wireless access systems, is an IEEE 802.16 standardization group of the Institute of Electrical and Electronics Engineers. Is being standardized on. Compared to the conventional wireless technology for the voice service, the IEEE 802.16 standard has a wider bandwidth of data and can transmit a lot of data in a short time, and all users can efficiently use the channel by sharing a channel (or resource). Do. In addition, quality of service (QoS) is guaranteed so that users can receive different quality services according to the characteristics of the service.

In the IEEE 802.16 system, a multicast and broadcast service capable of providing multicast and broadcast to a plurality of mobile terminals is referred to as a multicast and broadcast service (hereinafter referred to as 'MCBCS'), and according to the intention of a standardization group or an operator. May be called). In the MCBCS standard, an MBS zone (MBS_ZONE) refers to an area composed of one subcell or a plurality of subcells that transmit the same broadcast channels at the same frequency and at the same time. Each subcell in the MBS zone uses the same connection identifier (CID) for the same broadcast channel or content. Here, the subcell is a group consisting of one frequency and one sector. In general, a multicast CID (hereinafter referred to as 'MCID') has a 1: 1 mapping relationship with one broadcast channel having a broadcast channel IP, and is called a logical channel ID (hereinafter referred to as 'LCID'). ) Maps 1: 1 to an ID, that is, a content ID, that distinguishes various broadcast contents included in a payload of the same broadcast channel IP. The base station transmits the MBS zone ID list through a downlink channel descriptor (hereinafter referred to as 'DCD') message to broadcast information on whether the base station is a base station capable of MCBCS service and which zone it belongs to. do. The MBS zone may consist of a single base station or of a plurality of base stations.

Unlike conventional unicast services, the MCBCS improves reception performance by multiple base stations transmitting the same broadcast content at the same time at the same frequency and combining and receiving packets from multiple base stations. Can be. In the case of the existing unicast service, when the terminal exists at the cell edge, data transmission and reception are not smooth due to large interference between cells. However, in the case of the MCBCS, even if the terminal is located at the cell boundary, neighboring base stations transmit the same content at the synchronized time, so that the same data can be received and used from various base stations. This effect is called macro diversity gain.

At present, important problems of the MCBCS-related standard defined in IEEE 802.16e are as follows. Due to the specification, there is no broadcast message indicating which MCID is mapped to each broadcast channel IP, so that each terminal performs a broadcast call request, deletion, change, and handoff procedure. It is necessary to generate a unicast flow every time, and for this purpose, the terminal must maintain an awake state. Thus, the maximum number of awake state users per sector is limited. This is a premise that a unicast flow occurs frequently even in a terminal receiving only a broadcast. Therefore, the system should allocate a channel quality information channel (CQICH) for this purpose. Here, the MCID is a factor for distinguishing each MBS_DATA_IE and each broadcast channel data burst in the MBS-MAP message in the MAC layer.

In addition, even if the terminal receives only a broadcast, if a handoff situation occurs in an awake or sleep state, the handoff procedure is performed. Accordingly, an air resource and a system for the procedure are performed. There is a problem in that processing capacity is wasted. Here, when the handoff fails, broadcast reception may be interrupted.

In addition, there is a problem in that the air resources are wasted according to the broadcast call processing procedure for each terminal. When each UE performs call request, change, and delete procedures for all broadcast channels, MAP overhead is increased and data bursts of signaling MAC messages are generated.

In addition, there is a problem in that delay caused by each broadcast call processing procedure increases. Each terminal passes through the terminal, the base station, the base station controller, the MCBCS server, and the policy server for each broadcast call processing procedure, thereby adding a delay. In particular, the user is sensitive to the call change time, the call change has to go through both the deletion and the application process, the transmission latency (latency) has a big problem in the unit of several hundred ms.

In addition, when each UE proceeds with a broadcast call request, deletion, and change procedure, an uplink subframe is necessary, power consumption occurs due to uplink transmission according to the above procedure, and macro diversity schemes become more complicated. There is a problem that can be.

Lastly, the subjects for MBS zone or MCID or LCID allocation, generation and delivery of broadcast schedules of service providers, and creation and management of MBS-MAP messages are important. There is a problem that the head becomes large and causes many abnormal cases.

An object of the present invention is to provide an apparatus and method for delivering a service guide in a broadband wireless access system.

Another object of the present invention is a mapping table of MAC layer name tags or IP layer name tags to application layer name tags for a broadcast channel in a broadband wireless access system. The present invention provides a service guide delivery device and method including a combination of a real broadcast channel name mapped to a TABLE OF BROADCASTING or AUTHENTICATION INFORMATION or an application layer name tag.

Another object of the present invention is to eliminate the various causes that the terminal must maintain an awake state in a broadband wireless access system, and the periodic uplink transmission that is a disadvantage when the terminal is awake (wake) It is an object of the present invention to provide an apparatus and method for delivering a service guide which can prevent waste of power and waste of air resources required for signaling.

Another object of the present invention is to provide an apparatus and method for delivering a service guide in a multicast broadcast flow, a broadcast flow, or a unicast flow in a broadband wireless access system.

Another object of the present invention is to provide an apparatus and method for generating and managing MBS-MAP messages in a broadband wireless access system.

According to an embodiment of the present invention, a method for receiving a service guide of a terminal in a broadband wireless access system includes transmitting a service guide request message to a multicast and broadcast service (MCBCS) server, and from the MCBCS server. Receiving a service guide response message, wherein the service guide response message includes a mapping table of MAC layer name tags vs. application layer name tags for a broadcast channel, wherein the MAC layer name tag is an MCID ( Multicast Connection Identifier), wherein the application layer name tag is a broadcast channel IP, and includes storing the mapping table.
According to an embodiment of the present invention to achieve the above object, a service guide receiving apparatus of a terminal in a broadband wireless access system, means for transmitting a service guide request message to a multicast and broadband service (MCBCS) server, and from the MCBCS server Means for receiving a service guide response message, wherein the service guide response message includes a mapping table of MAC layer name tags to application layer name tags for a broadcast channel, wherein the MAC layer name tag is an MCID ( Multicast Connection Identifier), wherein the application layer name tag is a broadcast channel IP and includes means for storing the mapping table.

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The present invention provides a MAC layer name tag or an IP layer name tag for a broadcast channel in a multicast broadcast flow, a broadcast flow, or a unicast flow in a broadband wireless access system. (IP layer name tag) vs. application layer name tag (may include IP layer name tag), MAPPING TABLE, TABLE OF BROADCASTING, AUTHENTICATION INFORMATION, or application By providing a service guide delivery device and method consisting of a combination of the actual broadcast channel name mapped to the hierarchical name tag, when moving between base stations in the same MBS zone, the terminal does not need to perform additional MCID and broadcast channel IP mapping MCID vs. broadcast channels for certain broadcast channels, such as national broadcasts, even when moving between base stations within different MBS zones. By uniquely assigning IPs, these channels may receive broadcasts without additional information updates. That is, even if the MBS zones are different, seamless MCBCS may be provided. In addition, by eliminating various causes that the terminal must maintain an awake state, power consumption and signaling due to periodic uplink transmission, which is a disadvantage when the terminal is awake, is eliminated. There is an advantage that can prevent the waste of the necessary air resources (air resources). In addition, in view of requesting and delivering a service guide, the present invention provides a wireless network by presenting the most efficient architecture (architecture) and interworking procedures for finally generating and delivering a service guide through an MCBCS server even though there are various SPs. There is an advantage that greatly improves the competitiveness of the broadcast technology.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

Hereinafter, an apparatus and method for delivering a service guide in a broadband wireless access system according to the present invention will be described.

In the present invention, four methods are proposed as service guide delivery methods.

First, the first method uses a multicast broadcast flow. When a UE requests delivery of a service guide to an MCBCS server through an application layer, the MCBCS server directly generates a service guide and provides it to a base station controller. Alternatively, the MCBCS server transmits the information for generating the service guide to the base station controller to directly generate the service guides. Thereafter, the generated service guide is transmitted to the base station, so that the base station transmits the service guide to the terminal through a data burst of a specific MCID.

Next, the second method uses a unicast flow. When the UE requests delivery of a service guide to an MCBCS server through an application layer, the MCBCS server searches a database to extract a service guide. The extracted service guide is transmitted to the terminal through an application layer (for example, HTTP (HyperText Transfer Protocol)). Here, the MCBCS server may perform an MCBCS service authentication process with a security server according to the request, in which case the MCBCS server transmits the authentication information to the terminal with the service guide. In this case, the terminal may request delivery of the service guide to the SP instead of the MCBCS server. In this case, the SP may trigger the MCBCS server to cause the MCBCS server to transmit the service guide to the terminal.

Next, a third method is to use a broadcast flow. When the terminal requests delivery of a service guide to an MCBCS server through an application layer, the MCBCS server triggers a base station to cause the base station to include a service guide. A cast message, for example, a DCD message may be generated and transmitted to the terminal.

Finally, the fourth method is a method using a DSA procedure. When a UE requests service guide delivery to an MCBCS server through an application layer, the MCBCS server directs transmission of a service guide to a base station controller (DSA). The base station controller transmits a DSA request trigger message to the base station according to the request trigger message. In this case, the base station generates a DSA request message including a service guide according to the triggering of the base station controller to the terminal. Can transmit

In this case, the service guide is a mapping table of a MAC layer name tag or an IP layer name tag to an application layer name tag for a broadcast channel, or a broadcasting schedule. (TABLE OF BROADCASTING) (broadcast schedule, rate), or AUTHENTICATION INFORMATION (MCBCS GTEK (General Traffic Encryption Key), MCBCS root key and MCBCS KEK (Key for decrypting / encrypting channels or content) Random seed value for the Encryption Key, the lifetime value of the MCBCS GTEK and MCBCS root key and MCBCS KEK, the actual broadcast channel name mapped to the application layer name tag (ie, the broadcast channel monitored by the user) Name). Here, of course, each service guide may be configured by collecting individual broadcasting stations or SP units or collecting multiple broadcasting stations or SPs. In addition, it is a matter of course that each MBS zone unit or all MBS zones can be collected and configured.

Here, the MAC layer name tag includes MCID and LCID, and the IP layer name tag includes broadcast channel IP and content IP. In addition, the application layer (meaning above L3 layer) name tag may include a content ID, a broadcast channel ID, a broadcasting station ID, and a service provider (SP) ID. The application layer name tag may also include the IP layer name tag. That is, the application layer is above the MAC layer, for example, in the case of the L7 layer, L3 (IP) or L4 (Transport) or L5 (Application) or one of L6 or L7 or a combination of these five layers (eg L3 & L5). In the following description, the MCID-to-broadcast IP mapping table is a specific embodiment of the mapping table of the MAC layer name tag to the application layer name tag. (vs) It is possible to combine various mapping tables such as mapping table of application layer name tag.

In this case, the method for delivering the SP list to the terminal through air is defined in 802.16g. That is, the SP list may be delivered to the UE through a SBC-RSP (SS Basic Capability-ReSPonse) message or a SII-ADV (Service Identity Information-ADVertisement) message transmitted during initial access. In the present invention, it is assumed that a user or a terminal knows an address of an SP or an MCBCS server. In general, the terminal can obtain the address by the following methods. First, the address is stored in the terminal in advance and configured, or second, the user inputs the address directly. Third, when the initial connection is delivered, the address is delivered with the SP list. The address may be obtained through an interworking procedure with an obtainable server. In the fourth method, a client program located in an application layer of a terminal and a specific server managed by an operator must provide the function.

In the present invention, the MCBCS server is not only a final agent for delivering broadcast content using a multicast flow to a wireless network, but also a part for delivering a part or all of a service guide to a terminal through a wireless network. The broadcast schedule and authentication information may be directly transmitted to the terminal by the SP. In other words, the MCBCS server directly manages a wireless network from an access provider (AP) position and transmits signaling information as well as broadcast bearer traffic. When several SPs share a single wireless network, all SPs finally utilize a wireless network through an MCBCS server to provide a broadcasting service desired by a user.

In the following description, the name of the network entity (NE: Network entity) is defined according to the corresponding function, and may vary according to the intention of the standardization group or the operator. For example, a base station may be referred to as a radio access station (RAS) or a base station (BS), and a base station controller may be an access control router (ACR) or an access service network-gateway (ASN-GW). Gateway). Here, the ASN-GW may perform a router function as well as a base station controller function.

Here, the subjects related to the MCBCS service will be described. Typically, the entities associated with the MCBCS service are referred to as Content Provider (hereinafter referred to as "CP"), Service Provider (hereinafter referred to as "SP"), and Network Operator (hereinafter referred to as "AP"). ), Including the user.

First, the CP is responsible for producing and supplying the content provided by the MCBCS service, the SP is supplied with the content from the CP, serves to serve the user for free or a fixed fee for the content, The AP is responsible for transmitting the service of the SP to users. The CP, SP, and AP may each be independent operators, but one operator may play all roles or two or more roles. An example thereof may be a terrestrial broadcasting operator in Korea.

1 is a diagram illustrating a network structure for providing an MCBCS service of a broadband wireless access system according to the present invention.

As shown, the network structure is a security server (150), MCBCS application server (hereinafter referred to as 'AS') (140-1, 140-2), MCBCS server 130, MCBCS It is configured to include a controller (120), the base station 110 and the terminal (100). Here, the MCBCS controller 120 may be an independent device located together with the base station controller, or the base station controller may include a function of the MCBCS controller.

Referring to FIG. 1, first, the security server 150 belongs to an area of the SP and performs functions such as authentication, authorization, and billing processing for the user's subscription to the MCBCS service.

The MCBCS ASs 140-1 and 140-2 belong to the area of the SP and have a subscription processing / management function for the user who has subscribed to the MCBCS service, a function for transmitting the contents of the MCBCS service to the AP, and a fraudulent user. It performs user authentication for access control, protects content supplied to CP, manages terminals of multiple users, and provides information required for MCBCS services. In FIG. 1, the difference between MCBCS AS 1 140-1 and MCBCS AS 2 140-2 is that MCBCS AS 1 140-1 provides a free service or a user control function and a content protection function. It is an MCBCS AS for an SP that does not provide the MCBCS AS 2 (140-2) is a MCBCS AS for an SP that provides a paid service, fraudulent user control function and content protection function. Hereinafter, the functions of the MCBCS ASs 140-1 and 140-2 will be described in detail.

-MCBCS service information, for example, service guide generation: When creating a service guide, it follows the mutually agreed data model between MCBCS ASs.

-Perform subscription procedure to receive MCBCS service of user

-In conjunction with the security server 150, performs user authentication, permission to use, billing processing, etc.

-User group management by MCBCS channel or MCBCS content

-Management and distribution of authentication key by group

-Unauthorized user access control / multimedia content protection (Service Protection / Content Protection): Content encryption and decryption key management and distribution

-Stream Transmission / File Transmission: Definition of transmission protocol, management of reception report to check whether user has received MCBCS contents normally, file metadata (File transmission) for file transmission Metadata Management

-User Interaction: Provides interactive service with users

-Notification / Alert: Provides a service to notify users who have subscribed to MCBCS service when there is a change in broadcasting schedule or emergency broadcasting is required.

The MCBCS server 130 is an entity that plays a central role in the AP, and collects and transmits MCBCS service information (eg, a service guide) from various SPs, manages for efficient use of network resources, and manages data by a user terminal. It provides support function for error-free reception. Detailed functions are as follows.

-MCBCS Transmission Zone Management: Management of base stations in the area to service for each SP

-Service Guide processing: Aggregate service guides received from MCBCS AS, service guide compression to reduce fragmentation, network resource consumption, and maintenance management of service guides as needed.

-Service Guide Deployment: Unicast or Multicast Methods

-Stream Transmission / File Transmission: Check whether the user has received the MCBCS contents normally (sometimes play the same role as MCBCS AS)

-Multicast group management through user location tracking

-Receipt report processing: When the user reports the network status through the reception report, it is reflected.

The MCBCS controller 120 is located in the AP, and functions to efficiently transmit the MCBCS service transmitted through the central network as a connection part of the central network and the access network through the wireless network, and to inform the user terminal of the start of the MCBCS service. It supports the functions, and detailed functions are as follows.

Data / time synchronization to provide macro diversity gain: Burst reservation allocation and packet processing

-MBS zone management

-Group paging information delivery for notification

Here, the MCBCS controller 120 directly interfaces only with the MCBCS server 130, and interfaces with different SPs are possible only through the MCBCS server 130.

The base station 110 is responsible for the wireless transmission of the MCBCS service transmitted by wire, and is managed by the AP.

The terminal 100 serves as a user terminal to provide a user with the MCBCS service transmitted through the network entities.

Lastly, although not shown, the policy server manages QoS profile information for each IP flow for a terminal requesting a service.

In this case, the service area shown in FIG. 1 represents an area in which the SP provides a service, and the MCBCS transmission zone is defined by the AP for efficient transmission of MCBCS services in the service area. Defined delivery management area, which represents the area where the same content is broadcasted. On the other hand, the MBS zone means an area in which MCBCS service flows are valid through different Connection IDentifiers (CIDs) or different Security Associations (SAs).

2 is a diagram illustrating a service guide delivery method using a multicast broadcast flow in a broadband wireless access system according to a first embodiment of the present invention.

Referring to FIG. 2, in general, a transmitter of an IEEE 802.16 communication system, which is a communication system providing MCBCS, transmits MCBCS data to receivers at the same frame number and the same OFDM symbol at the same time using the same coding scheme. do. In this case, in order for the receiver located at the edge of each service area to obtain a macro diversity effect through radio frequency combining, the transmitter classifies a burst for MCBCS in a downlink frame and distinguishes the burst. MCBCS data must be transmitted over one MCBCS burst. In addition, the receiver receives the MBB-MAP message including the information of the MCBCS burst for the MCBCS data to be received in the downlink frame to recognize the MCBCS burst to receive the MCBCS data transmitted through the MCBCS burst do. In the following description, a downlink map (DownLink-MAP: hereinafter referred to as 'DL-MAP') message is a MAP message for transmitting downlink resource allocation information.

Here, the downlink frame of the communication system providing the MCBCS may be represented by subchannels and symbols in a time domain and a frequency domain. The downlink frame includes a DL-MAP message, an MBS-MAP message, and a plurality of MCBCS data bursts.

The DL-MAP message is composed of a DL-MAP IE for indicating a burst transmitted in a current frame, and further includes MBS_MAP_IE 201 in case of providing MCBCS. The MBS_MAP_IE 201 provides location information and decoding information of the MBS-MAP message 203 in the DL subframe, and the receivers receive the MBS-MAP message 203 through the MBS_MAP_IE 201.

The MBS-MAP message 203 is composed of MBS_Data_IE 209, and transmits location information and decoding information of MCBCS data bursts 205 to the receiver through the MBS_Data_IE 209, and the receiver sends the MBS_Data_IE 209 to the MBS_Data_IE 209. MCBCS data is received through the MCBCS data burst 205 allocated to a specific MCBCS frame using the included information.

Here, the service guide delivery method of FIG. 2 is a multicast broadcast flow, and the service guide is transmitted using a data burst transmitted to a specific MCID for all zones. That is, the service guide is periodically transmitted to the terminal through a specific MCID. In this case, the specific MCID number is the same for all zones, but the transmission time, the transmission period, and the contents of the transmitted service guide may be configured differently for each MBS zone. Here, the transmission period of the service guide can be adjusted according to the operator in the standard frame.

The service guide may be, for example, a mapping table of MCIDs and broadcast channel IPs, and the mapping table is managed in an array, and as shown in FIG. 7, a channel ID (or content ID) and a zone ID ( MBS zone ID), broadcast channel IP address, and MCID (or LCID). Since the size of the MCID and the broadcast channel IP address is constant, for example, 12 bits and 32 bits (LCID is 8 bits), the total size of the mapping table is determined according to the number of broadcast channels for each MBS zone. Can be. Therefore, when transmitting the mapping table to a specific MCID, the only information necessary for calculating the total size of the mapping table is the number of broadcast channels, and the MBS-MAP message includes the name tag (MCID or LCID), location, and size of an MCID data burst. Since the information must be included, the simpler the information necessary to calculate the size information is, the better.

Here, the service guide data burst packet may be generated by the MCBCS server 130 or the base station controller 120. Here, since the MCBCS server 130 provides a stream for all data bursts transmitted to the MCID, when the MCBCS server 130 generates a service guide data burst packet, the MCBCS server 130 has an advantage of simply utilizing the stream for the data burst as it is. On the other hand, the base station controller 120 generates a burst size according to MBS zone air scheduling (permutation, MCS level, MIMO, transmission rate, transmission period, compression, broadcast time / end management) And the base station controller 120 has the service guide data since the packetization is performed, and the packetization information has information necessary for packetization, for example, MCID, broadcast channel IP, and broadcast channel configuration management information for each MBS zone. It can also generate burst packets. In this case, the MBS-MAP message must include the name tag (MCID or LCID) and location and size information of the MCID data burst for delivering the service guide content, so that the MCBCS server 130 or the base station controller 120 should inform the information to the subject generating the MAP message, for example, the base station 110 in advance. At this time, the base station 110 includes the name tag (MCID or LCID) and location and size information of the MCID data burst for delivering the service guide content to the MBS-MAP message, and the MBS-MAP message; After transmitting the DL-MAP indicating the two-dimensional allocation position of the MAP message to the terminal 100, the terminal 100 includes a service guide from the MCBCS server 130 or the base station controller 120 in the corresponding MCBCS burst. To send). In this case, the terminal 100 stores the service guide in a memory.

2 is a diagram illustrating an example of a multi-base station MCBCS capable of acquiring macro diversity, and the MBS-MAP message is used in the case of a single-base station MCBCS capable of acquiring macro diversity. It doesn't work. That is, MBS_MAP_IE of DL-MAP may directly provide location information and decoding information of MCBCS burst.

Meanwhile, in the first embodiment of the present invention, the service guide for each zone is delivered as a burst of data of a specific MCID, but the service guide for each zone is transmitted as a broadcast CID (BCID). Method is also possible.

3 is a diagram illustrating a service guide delivery method to one user who requests a unicast flow in a broadband wireless access system according to a second embodiment of the present invention.

Referring to FIG. 3, the MCBCS server 330 multicasts MCBCS content traffic to the base station controller 320 in step 301, and the base station controller 320 transmits the received MCBCS content traffic to the base station in step 303. Multicast transmission to 310.

Then, the terminal 300 in step 305 When a service guide, for example, a mapping table of MCID vs. broadcast channel IP is requested according to a user's key manipulation, a service guide request message is transmitted to the MCBCS server 330 through an application layer. Here, the service guide request message includes a terminal IP and a base station ID. At this time, the MCBCS server 330 may or may not perform the MCBCS service authentication process with the security server 350. That is, when transmitting a response message to the service guide request message, the terminal is within the limits allowed for the MBS zone to which the terminal 300 belongs or all MBS zones allowed for the terminal (or user) or the terminal. A service guide response message including only service guides corresponding to all selected MBS zones may be transmitted to the terminal 300, but an MCBCS GTEK (General Traffic Encryption Key) value is obtained through an MCBCS service authentication process with the security server 350. By simultaneously transmitting the service guide, the MCBCS GTEK value, that is, the corresponding service authorization key value, may be provided for the channel to be monitored.

In other words, when the MCBCS server 330 does not perform the MCBCS service authentication process with the security server 350, the MCBCS server 330 is an MBS zone to which the terminal 300 belongs or a corresponding terminal (or user) in a database. Search for service guides corresponding to all MBS zones allowed in the MBS zones or the MBS zones selected by the UE within the limit allowed for the UE, and proceeds directly to step 309 to receive a service guide response message including the found service guide. Transmit to the terminal 300.

In contrast, when the MCBCS server 330 performs an MCBCS service authentication process with the security server 350, the MCBCS server 330 performs an MCBCS service authentication process with the security server 350 in step 307. Here, in the MCBCS service authentication process, the MCBCS server 330 transmits the MCBCS service authentication request message including the terminal IP to the security server 350, the security server 350 receives the message is the terminal After performing authentication of the MCBCS service authorization key (that is, MCBCS GTEK (General Traffic Encryption Key)) that can encrypt / decrypt (encryption / decryption) authorized broadcast channel IPs for each service class of the terminal 300. Random seed value for the generation of the MCBCS GTEK key lifetime value to indicate the validity of the MCBCS GTEK, MCBCS generated in the security server for encryption / decryption (encryption / decryption) of the MCBCS GTEK Terminal unique to enable the generation of root key and MCBCS channel / content key encryption key (KEK) value, MCBCS root key and MCBCS channel / content key encryption key (KEK) internally LAN The MCBCS server includes an MCBCS service authentication response message including a seed value, a key lifetim value for indicating a validity period of the MCBCS root key and an MCBCS channel / content KEK, and MCBCS service class information of a terminal; By sending to 330. Alternatively, the MCBCS service authentication process may be performed periodically. In other words, the MCBCS server 330 manages the above authentication information, and the MCBCS server 330 may update the MCBCS authentication information according to a periodic trigger of the security server 350. .

The MCBCS server 330 that has performed the authentication process is configured in the MBS zone to which the terminal belongs or all MBS zones allowed for the terminal (or user) or all MBS zones selected by the terminal within the limit allowed for the terminal in the database. Search the corresponding service guide, for example, the mapping table of the MCID vs. broadcast channel IP, using the random seed value received from the security server 350, the service of the terminal 300 Generating MCBCS GTEK for the authorized broadcast channel IPs by class and encrypting the generated MCBCS GTEK with MCBCS root key and MCBCS Key Encryption Key (KEK) value received from security server 350. After that, in step 309, the mapping table for the broadcast channel IPs authorized for each service class of the corresponding terminal 300 among the searched mapping tables, the encrypted MCBCS GTEK, and the MCBCS root key (root). key) and a terminal unique random seed value that enables the internal generation of a MCBCS KEK (Key Encryption Key), the MCBCS GTEK and MCBCS root keys, and the MCBCS KEK key lifetime. The service guide response message including the value is transmitted to the terminal 300. Here, the service guide response message may include a broadcast time schedule as information on a broadcast time zone for each broadcast channel.

Here, the service guide request message and the response message are transmitted / received in a unicast flow via HTTP (HyperText Transfer Protocol) or an interoperable protocol. Here, the terminal 300 receiving the service guide message may store the service guide in a memory and transmit ACK / NACK to the MCBCS server 330. When performing the ACK / NACK transmission procedure, when receiving the NACK, the MCBCS server 330 may retransmit accordingly. On the other hand, when the ACK / NACK transmission procedure is not performed, when the terminal 300 does not receive the service guide, the terminal 300 internally allows the user to recognize the request and abandons a retransmission request or abandonment. You can decide.

Thereafter, the terminal 300 multicasts MCBCS content traffic corresponding to the MCID flow for the channel selected by the user from the base station 310 in step 311. In this case, the received traffic is displayed on the user interface via the PHY layer and the MAC layer through the flow path.

3 is an effective method for reducing resource waste when the number of MBS zones is small and each MBS zone covers a wide area. In addition, the mapping table may be transmitted at the request of the terminal as described above, or may be transmitted to the corresponding terminal at the request of the security server, the MCBCS server, the policy server, or the SP.

4 is a diagram illustrating a service guide delivery method through an interworking procedure with an SP in a broadband wireless access system according to a third embodiment of the present invention.

Referring to FIG. 4, the MCBCS server 430 multicasts the MCBCS content traffic to the base station controller 420 in step 401, and the base station controller 420 transmits the received MCBCS content traffic to the base station in step 403. Multicast transmission to 410.

The MCBCS server 430 may communicate with one or more SPs 460 through a cellular network. In step 405, the MCBCS server 430 may periodically transmit service guide information, that is, service guide contents and terminals from the one or more SPs 460. Receive a delivery format of. For example, the delivery format of the service guide is the format delivered to the user in the case of a broadcast schedule, using the security format generally used for authentication information (random seed or double encryption), and in the case of the mapping table, the broadcast domain. Assignment information, broadcast schedule information, and mapping table formats may be used. Here, the SP 460 is a subject that receives a subscriber and charges a broadcast service.

In operation 407, when the service guide is requested according to a user's key manipulation, the terminal 400 transmits a service guide request message to the corresponding SP 460. Here, the service guide request message includes a terminal IP and a base station ID. In this case, the SP 460 triggers the MCBCS server 430 in step 409 so that the MCBCS server 430 delivers the service guide to the user through the wireless network.

In this case, the MCBCS server 430 generates a service guide based on the contents of the service guide of the SP 460 in step 411. For example, the MCBCS server 430 assigns a name tag of a MAC layer to an MBS zone and an application layer. A service guide response message including a service guide requested by 400 is generated and transmitted to the terminal 400 according to a corresponding delivery format. In this case, the terminal 400 stores the service guide in a memory.

Thereafter, when the terminal 400 successfully receives the service guide response message, the terminal 400 transmits a service guide Ack indicating the successful delivery of the service guide response message to the MCBCS server 430 in this case. The server 430 transmits the service guide Ack to the SP 460 in step 415.

Alternatively, the SP 460 may directly transmit the service guide according to the service guide request of the terminal 400 to the terminal 400, in which case, the terminal 400 sends the service guide Ack to the SP. Send directly to 460.

5 is a diagram illustrating a service guide delivery method through an interworking procedure with an SP in a broadband wireless access system according to a fourth embodiment of the present invention.

Referring to FIG. 5, the MCBCS server 530 multicasts MCBCS content traffic to the base station controller 520 in step 501, and the base station controller 520 transmits the received MCBCS content traffic to the base station in step 503. Multicast transmission to 510.

Thereafter, the terminal 500 transmits a service guide request message to the MCBCS server 530 when a service guide is requested according to a user's key manipulation in step 505. Here, the service guide request message includes a terminal IP and a base station ID.

In this case, the MCBCS server 530 communicates with one or more SPs 560 in step 507 to receive service guide information, that is, service guide contents and delivery format from the SPs 560. In this case, the service guide information may be received in step 507 or may be received in advance before step 505.

 In step 509, the MCBCS server 530 generates a service guide based on the service guide information, generates a service guide response message including the service guide, and transmits the generated service guide response message to the terminal 500 according to a corresponding delivery format. In this case, the terminal 500 stores the service guide in a memory.

In step 511, the terminal 500 multicasts the MCBCS content traffic corresponding to the MCID flow for the channel selected by the user from the base station 510. In this case, the received traffic is displayed on the user interface via the PHY layer and the MAC layer through the flow path.

On the other hand, the client program (Client program) located in the application layer (Application layer) of the terminal according to the present invention is a mapping table of the MAC layer name tag or IP layer name tag to (vs) application layer name tag for the broadcast channel (MAPPING TABLE) ), And when the user selects, changes, or deletes a specific broadcast channel (or broadcast content), as illustrated in FIG. 6, the user communicates internally with the MAC layer of the terminal to instruct a corresponding operation.

For example, when a user applies for a specific broadcast channel, the application layer may instruct the MAC layer to transmit a MAC layer name tag corresponding to the broadcast channel, receive data of the channel, and transmit the data to the application layer. have. In addition, when the user changes a specific broadcast channel, the application layer delivers the MAC layer name tag corresponding to the previous broadcast channel and the new broadcast channel to the MAC layer, and stops receiving data of the previous broadcast channel. It may be instructed to receive data and transmit it to the application layer. In this case, the MAC layer may be a PHY layer, instructs the user to open a physical port and receive a corresponding MCID (or LCID) flow. For this purpose, a signaling request between each layer interface (Signaling REQ) and the A signaling response (Signaling RSP) is transmitted and received for the request. Or ACK may be present. As such, if all signaling instructions are performed well, a flow path is generated, and the received data is displayed on the user interface through the MAC layer at the PHY layer. In addition, when the user deletes a specific broadcast channel, the application layer may instruct the MAC layer to transmit a MAC layer name tag corresponding to the broadcast channel and stop receiving data of the channel.

In this way, the MAC layer may transmit a response (RSP) signal to the application layer with respect to a request (REQ) signal of the application layer for requesting, changing, or deleting the specific broadcast channel. The MAC layer name tag included in the request signal or an IP layer name tag corresponding thereto may be included. Thereafter, the application layer receiving the response signal may transmit an acknowledgment signal including the result of checking whether the name tag included in the response signal is identical to the originally requested name tag, to the MAC layer. The MAC layer performs the procedure initially requested by the application layer only when the acknowledgment signal is ACK. If the application layer does not receive a response (RSP) signal or if the response signal is received but a name tag different from the previously requested name tag is received, the corresponding request (REQ) procedure is retried. In this case, when the above-described verification procedure is present, the request procedure may be retried by including the corresponding MAC layer name tag or IP layer name tag in the message for the verification procedure.

Alternatively, the MAC layer of the terminal may receive all MCBCS data from the base station, and may transmit only all data or data corresponding to the MAC layer name tag instructed to be transmitted from the application layer to the application layer. In this case, since the application layer manages the mapping table, it is possible to select a necessary broadcast channel.

6 is a diagram illustrating a terminal operation when the MAC layer name tag vs. an application layer mapping table exists, or when the IP layer name tag vs. an application layer mapping table exists, the application layer of the terminal is an IP layer name tag. To the IP layer and instructs the IP layer to send the flow of the channel to the application layer, the IP layer instructs the MAC layer to receive and transmit the flow of all MCIDs of the MBS zone to the IP layer, Among the flows received from the MAC layer, only the IP flow requested by the application layer may be selected, and the rest may be discarded and transmitted to the application layer.

Meanwhile, although not the 802.16 standard, a broadcast message, for example, a DCD message, may be used as another service guide delivery method according to the present invention. That is, when the terminal requests the service guide delivery to the MCBCS server through the application layer, the MCBCS server may trigger the base station to generate a broadcast message including the service guide and transmit it to the terminal. Here, the information on the service guide is received from the MCBCS server or the WiBro System Manager (WSM). The DCD message is a message broadcasted by a base station to transmit MBS zone information to a terminal. When the base station transmits a service guide, for example, all MCID flows in an MBS zone through the message, an MCID flow is performed at every handover of the terminal. There is an advantage that does not have to update.

Another service guide delivery method according to the present invention may use the DSA procedure. That is, when the terminal requests the service guide delivery to the MCBCS server through the application layer, the MCBCS server transmits a DSA (Dynamic Service Addition) request trigger message for instructing the transmission of the service guide to the base station controller, and accordingly the base station The controller transmits a DSA request trigger message to the base station. At this time, the base station generates and transmits a DSA request message including a service guide to the terminal according to the triggering of the base station controller. Alternatively, the terminal transmits a DSA request message for transmission of the service guide to the base station, and when the DSA request message is passed to the base station controller and, if necessary, AAA, the policy server is sent to the base station controller. The DSA response trigger message may be transmitted, and accordingly, the base station controller may transmit a DSA response trigger message to the base station, thereby causing the base station to transmit a DSA response message including a service guide to the terminal. As such, when all MCID flows in the MBS zone are transmitted through the DSA response message, the UE may receive the MCID flow through one DSA procedure or a continuous DSA procedure equal to the number of MCIDs.

Meanwhile, another service guide delivery method according to the present invention may use MBS-MAP message according to the 802.16 standard. That is, the terminal by reading all the MBS-MAP message belonging to have a transmission period of up to 256 frames (frame), the base station can acquire the service guide.

In this case, the MBS zone ID and MCID may be managed in both a client program, a MAC layer, and a PHY layer.

On the other hand, in the present invention, the MCBCS server as a terminal mapping the MBS zone to which the terminal belongs, or all MBS zones allowed for the terminal (or user), or all MBS zones selected by the terminal within the limits allowed for the terminal. Transferring a table has been described as an example. If the operator sets the zone area to a narrow area and transmits a mapping table for each zone, when the UE moves to another zone, the UE recognizes this and needs to request a new mapping table from the MCBCS server. In this case, it may be better for the MCBCS server to transmit mapping tables for all MBS zones than to transmit only the mapping table for the corresponding zone to the terminal. In this case, the MCIDs are different for the same broadcast content for each MBS zone. As such, the mapping table must further include an MBS zone ID.

Meanwhile, in the present invention, the MCID and the broadcast channel IP have a 1: 1 correspondence, but a plurality of broadcast channel IPs may be mapped to one MCID. The broadcast channel IP, the LCID, and the content ID have a 1: 1: 1 mapping relationship, and the MCID and the LCID have a 1: 1 or 1: N mapping relationship. Accordingly, the MCID and the broadcast channel IP may have a 1: N mapping relationship. That is, a plurality of broadcast channel IPs may be mapped to one MCID. In addition, since the MCID and the broadcast channel IP correspond to each other and have a relationship of MCID: LCID = 1: N and LCID: broadcast content = 1: 1, N broadcast contents may be mapped in one broadcast channel IP. That is, a plurality of broadcast contents may be mapped to one MCID or one broadcast channel IP.

On the other hand, the service guide request message transmitted by the terminal according to the present invention to the MCBCS server may include a request for traffic information, such as transmission rate for the management of the internal MCBCS traffic (traffic), in this case, the MCBCS server is the service guide The service guide response message including the traffic information for each of the broadcast channels included in may be transmitted to the terminal.

Meanwhile, the MCID and the broadcast channel IP according to the present invention may be managed separately. For example, an MCBCS server may manage only a broadcast channel IP. In this case, the MCBCS server receives a corresponding MCID from a database managing an MCID, and provides a terminal with a service for broadcast channels or contents allowed for the MCID. You can send the guide.

On the other hand, if MCID (or LCID) is uniquely assigned to specific broadcasting channels such as national broadcasting, that is, if the MBS zone is different, the global unique value will be assigned within another MBS zone. Even when moving between base stations, a broadcast may be received without additional information update for the channels. To this end, when the MCID (or LCID) for each MBS zone is transmitted to the terminal through the service guide response message or the DCD message or the existing DSA procedure, information on whether the corresponding MCID (or LCID) is a globally unique value is included. Can transmit In this way, when the terminal moves the zone, for certain broadcast channels such as the national broadcast, even if the terminal moves the MBS zone, the terminal continues to receive the broadcast using the same MCID (or terminates the broadcast reception when the zone moves), and the like. For local broadcasting, if the same content exists in a new zone, the broadcast is continuously received (or terminated when the zone moves) by using the corresponding MCID in the mapping table of the new zone.

Meanwhile, the terminal IP described in the embodiment of the present invention is a specific example of NAI (Network Access Identification), wherein the NAI corresponds to a user ID or a terminal ID, and another example of the NAI is a unique MAC address of the terminal. Can be mentioned.

Meanwhile, the broadcast channel described in the embodiment of the present invention may mean a broadcasting station such as KBS, MBC, or SBS, or may mean content such as news, drama, or movie provided by KBS. Similarly, MCID or LCID may mean a broadcasting station or content.

Meanwhile, the MCBCS server described in the embodiment of the present invention may be one network entity, an ASP (Assess Service Provider) such as KT, SKT, and Sprint, and a BSP (Broadcast Service Provider) such as KBS and MBC. software, such as multicast traffic generation, mapping table generation, broadcast schedule generation, encryption keys and random seeding, and lifetime time. You can also manage the blocks separately. In the present invention, the network entities managed by the ASP and the BSP are collectively called a CSN (Core Service Network).

On the other hand, the configuration of the mapping table according to the present invention can be changed according to the operator policy, the change time can be determined in consideration of the MCBCS GTEK refresh (refresh) time. For example, MCBCS GTEK playback may be performed on a day or week basis in a time zone when no broadcasting is performed, and the MCBCS server may change the configuration of the mapping table before playing MBG GTEK in a time period during which no broadcasting is performed. In this case, after changing the mapping table, the MCBCS server informs the base station controller supporting all MCBCS information about the changed mapping table so that the base station controller can update necessary information. In particular, since the mapping information for the MAC layer name tag and the application layer name tag for each MBS zone ID is managed by the base station controller, it must be updated periodically.

Meanwhile, when the MAC layer raises traffic to the application layer, a new name tag may be used instead of the MAC layer name tag received from the application layer to distinguish the traffic from other traffic. The new name tag may be configured as a new name tag having a small size that is mapped 1: 1 to the MAC layer name tag. This is to reduce overhead due to the long size length of the MAC layer name tag and to distinguish the same rule by applying the same rule to all traffic calls between the application layer and the MAC layer internally.

Meanwhile, a terminal internal implementation operation for providing seamless MCBCS support when moving between base stations or sectors is as follows. Here, it is assumed that the terminal can know whether the base station provides the MCBCS and the MBS zone to which it belongs. According to the 802.16 standard, when the MBS zone ID is transmitted to the terminal through a DCD message, and the MBS zone ID = 0 is received, the terminal may know that the base station does not provide the MCBCS.

First, an algorithm when an application layer of a terminal manages a MAC layer name tag and an application layer name tag mapping table is as follows. The terminal checks whether or not the new base station is a base station providing MCBCS through the DCD message. If, when the new base station provides the MCBCS base station date and time, the terminal checks whether the same MBS zone ID is received, that is, whether or not the same MBS zone, and if the same MBS zone ID is received, Continue to receive MCBCS content through the base station. On the other hand, when the same MBS zone ID is not received, the terminal checks whether the MAC layer name tag is a unique value for nationwide broadcasting, and when the MAC layer name tag is a unique value, The mapping table of the corresponding MBS zone is checked using the MBS zone ID. At this time, if the same MAC layer name tag as the MAC layer name tag for the existing broadcast channel exists in the mapping table, the MCBCS content is continuously received using the corresponding MAC layer name tag, otherwise, for the existing broadcast channel Perform the deletion process. On the other hand, when the MAC layer name tag is not a unique value, the deletion process is performed. On the other hand, when the new base station is not the base station providing the MCBCS, the terminal displays that it is not a broadcast reception area on the display. In the case of using the above algorithm, when the application layer of the terminal looks down the MAC layer name tag to the MAC layer, it informs whether the corresponding MAC layer name tag is a unique value for national broadcasting.

Next, the algorithm when the application layer manages the IP layer name tag and the application layer name tag mapping table is as follows. First, the terminal checks whether or not the new base station is a base station providing MCBCS through the DCD message. If, when the new base station provides the MCBCS base station date and time, the terminal checks whether the same MBS zone ID is received, and continues to receive MCBCS content when the same MBS zone ID is received. On the other hand, when the same MBS zone ID is not received, the terminal checks the mapping table of the corresponding MBS zone using the MBS zone ID of the new base station. At this time, if the same broadcast channel IP as the broadcast channel IP for the existing broadcast channel exists in the mapping table, the MCBCS content is continuously received using the corresponding broadcast channel IP, otherwise the deletion process for the existing broadcast channel is performed. To perform. On the other hand, when the new base station is not the base station providing the MCBCS, the terminal displays that it is not a broadcast reception area on the display.

Meanwhile, in the case of WiMAX, the MAC layer name tag for the multicast broadcast flow is MCID or LCID, and the MAC layer name tag for the broadcast flow is BCID (Broadcast CID). Here, there are five ways of informing the users of the MAC layer name tag for transmitting the service guide. Firstly, through a broadcasting MAC message (DL-MAP or DCD or NBR-ADV (NeighBoR-ADVertisement) or TRF-IND (TRaFfic-INDication) or PAG-ADV (PAGing-ADVertisement)). In this case, the MAC layer name tag that carries the service guide is fixed to a specific value and specified in the standard (MCID = 0 or BCID = 0 for WiMAX). Third, the service guide is transmitted with an additional parameter when sending the SP list. (WiMAX is defined as a method of transmitting the SP list to the air in the case of WiMAX. In this case, additional parameters are provided to inform the MCID, LCID, or BCID value.) Fourth, The user requests and obtains from the SP or MCBCS server through a unicast flow, and finally, if each SP is involved in supplying the terminal, there is a method of presetting the terminal.

Meanwhile, the present invention may use different delivery methods for each service guide. For example, Service Guide I (including one or more of the broadcast schedule or mapping table for IP layer name tags vs. application layer name tags) passes in the broadcast flow, and Service Guide II (IP layer name tags vs. MAC layer names). The mapping table for tags, or authentication information) may be delivered in a multicast broadcast flow or a unicast flow.

In the broadband wireless access system according to the present invention, another service guide delivery method may include the following methods. That is, one or more terminals join a multicast group through IGMP (Internet Group Management Protocol), and the MCBCS server generates a group ID for a specific group and transmits a service guide to the group. Trigger the base station controller. In this case, the base station controller generates a broadcast connection ID (BCID) or a unicast connection ID (TCID) in association with the base station and the terminals designated by the MCBCS server for the generated BCID or TCID. Notify through MAC interworking procedure (DSA), and transmit the service guide transmitted by MCBCS server to users of a specific multicast group through generated BCID or TCID.

Meanwhile, if the MBS-MAP message is not delivered to the terminal, the terminal cannot read the contents broadcast by the base station. Accordingly, the MBS-MAP message should be delivered without loss in real time, and for this purpose, the subject of generating the MBS-MAP message may be a base station. Alternatively, the base station controller may be the subject of generating the MBS-MAP message. In this case, the overall broadcast service quality may be degraded due to transmission error or transmission delay between the base station controller and the base station. However, the contents of the MBS-MAP message changed to static are set by the operator and transmitted in the order of MCBCS server-base station controller-base station or WB (WiBro System Manager) -base station. In the case of a single-base station MCBCS applying AMC, in which a burst size is changed dynamically in the middle of broadcast content transmission, an RF scheduler of a base station must directly generate the MBS-MAP message.

Meanwhile, the present invention varies air scheduling related information and ID resource indication information according to a service type. Here, all MBS zone IDs provided by the corresponding subcell are listed in the DCD message.

First, the MCBCS type provided by the MBS zone ID is displayed in parallel with or separately from the MBS zone ID. For example, if the MBS zone ID is not 0, then the multi-station vs. the single-station vs AMC that does not apply Adaptive Modulation and Coding (AMC) and the single-station vs. AMC that applies static transmission behavior and dynamic transmission operations Identify the single-base stations that apply. Here, the term static transmission operation is used to mean that a broadcast is transmitted during a broadcast time regardless of the presence or absence of a broadcast receiving user, and the term dynamic transmission operation is used according to the presence of a broadcast receiving user. Used to determine the presence or absence of broadcast transmission. Since the AMC and the operation transmission operation do not apply to a multi-base station, there is no need to indicate whether to apply them separately, and whether to apply only to a single-base station is considered. Two bits are required for the indication. In this case, when the MBS zone ID is 0, this indicates a subcell that does not provide MCBCS service. In some cases, the single-base station that does not apply the AMC may be subdivided into a single-base station that does not support AMC and static transmission operation vs. a single-base station that does not support dynamic transmission operation. In this case, since there are five in total, three bits are required for the display.

Next, the number of transmission groups included in the MBS zone ID is displayed in parallel with or separately from the MBS zone ID. In this case, the transmission time may be displayed for each transmission group. For example, one or more of a transmission start frame, a transmission period, or a transmission rate may be additionally displayed. Here, the transmission group refers to a set of broadcast channels having the same transmission start frame and transmission period and the same air scheduling (eg, permutation & AMC) in one MBS zone. Each MBS zone may have a maximum of 256 transmission groups, but for efficient management, it is advantageous to limit the maximum number of transmission groups to 4 or 8 in one MBS zone.

Finally, when the service guide is transmitted to a specific MAC layer name tag (MCID or LCID), the type of the corresponding MAC layer name tag is indicated. For example, you can indicate whether the MAC layer name tag is valid only in that zone, valid for all zones, valid for multiple but not all zones, and last zone also indicates which zone is valid in which zone. It can be done. Here, the service guide may be transmitted by making a specific MCID burst for each MBS zone ID as a separate transmission group, or may be transmitted at a predetermined cycle for each transmission group. In case of transmitting the separate transmission group, the first transmission group is to be the transmission group delivering the service guide. When transmitting at a predetermined period for each transmission group, each transmission group may be transmitted every time, or may be transmitted at a predetermined interval for each transmission group in consideration of overhead. Herein, the contents of the service guide are based on all channel information of a transmission group or an MBS zone. In addition, the content of the service guide may indicate whether or not IP header compression, compression type information, and encryption for each broadcasting channel or MBS zone.

Meanwhile, the mapping table and the broadcast scheduling table according to the present invention may include not only the MBS zone ID but also the MCBCS transmission zone ID.

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

1 is a diagram illustrating a network structure for providing an MCBCS service in a broadband wireless access system according to the present invention;

2 is a diagram illustrating a service guide delivery method using a multicast broadcast flow in a broadband wireless access system according to a first embodiment of the present invention;

3 is a diagram illustrating a service guide delivery method to one user who requests a unicast flow in a broadband wireless access system according to a second embodiment of the present invention;

4 is a diagram illustrating a service guide delivery method through an interworking procedure with an SP in a broadband wireless access system according to a third embodiment of the present invention;

5 is a diagram illustrating a service guide delivery method through an interworking procedure with an SP in a broadband wireless access system according to a fourth embodiment of the present invention;

6 is a diagram illustrating an internal operation of a terminal according to the present invention; and

7 is an exemplary diagram illustrating a mapping table of a broadband wireless access system according to the present invention.

Claims (56)

A method of receiving a service guide of a terminal in a broadband wireless access system, Transmitting a service guide request message to a multicast and broadcast service (MCBCS) server; Receiving a service guide response message from the MCBCS server; Here, the service guide response message includes a mapping table of MAC layer name tags to application layer name tags for a broadcast channel, wherein the MAC layer name tag is a multicast connection identifier (MCID), and the application layer name The tag is the broadcast channel IP, Storing the mapping table. The method of claim 1, The service guide response message may further include at least one of a broadcast schedule (TABLE OF BROADCASTING), authentication information (AUTHENTICATION INFORMATION), and an actual broadcast channel name mapped to an application layer name tag. The method of claim 1, The MAC layer name tag is at least one of the MCID, MBS (Multicast and Broadcast Service) zone ID, Logical Channel ID (LCID), and the application layer name tag is the broadcast channel IP, content ID, and broadcast channel. And at least one of an ID, a broadcasting station ID, a service provider (SP) ID, and a content IP. The method of claim 1, The service guide request message and the service guide response message are characterized in that for transmitting and receiving through the application layer. The method of claim 1, The service guide request message is characterized in that for transmitting to the SP (Service Provider) instead of the MCBCS server. The method of claim 1, The MCBCS server performs an authentication procedure in association with a security server and generates authentication information through the authentication procedure, wherein the service guide response message received from the MCBCS server is generated along with the mapping table. Method comprising a. The method of claim 1, Before the service guide response message is sent from the MCBCS server, The MCBCS server receives service guide information from a service provider (SP) periodically or in response to the service guide request message received from the terminal, And generating a service guide response message including the mapping table based on the service guide information received from the SP. The method of claim 7, wherein The service guide information includes at least one of service guide contents and service guide delivery format. The method of claim 4, wherein The application layer is characterized in that the HyperText Transfer Protocol (HTTP) or interworking protocol (Protocol). The method of claim 1, The mapping table is a mapping table corresponding to one of the MBS zone for the terminal, all MBS zones allowable for the terminal, and all MBS zones selected by the terminal within an allowable limit for the terminal. Way. The method of claim 1, The service guide request message comprises at least one of a terminal IP and a base station ID. The method of claim 1, When one broadcast channel is selected in the mapping table, transmitting, by the application layer unit of the terminal, a MAC layer name tag for the broadcast channel to the MAC layer unit of the terminal; Instructing the MAC layer unit to receive a flow corresponding to the MAC layer name tag received from the application layer unit to the PHY layer unit of the terminal; Receiving, by the MAC layer unit, the flow from the PHY layer unit; And transmitting, by the MAC layer unit, data corresponding to the received flow to the application layer unit. A service guide receiving device of a terminal in a broadband wireless access system, Means for sending a service guide request message to a MultiCast and BroadCast Service (MCBCS) server; Means for receiving a service guide response message from the MCBCS server; Here, the service guide response message includes a mapping table of MAC layer name tags to application layer name tags for a broadcast channel, wherein the MAC layer name tag is a multicast connection identifier (MCID), and the application layer name The tag is the broadcast channel IP, Means for storing the mapping table. The method of claim 13, The service guide response message may further include at least one of a broadcast schedule (TABLE OF BROADCASTING), authentication information (AUTHENTICATION INFORMATION), and an actual broadcast channel name mapped to an application layer name tag. The method of claim 13, The MAC layer name tag is at least one of the MCID, MBS (Multicast and Broadcast Service) zone ID, Logical Channel ID (LCID), and the application layer name tag is the broadcast channel IP, content ID, and broadcast channel. And at least one of an ID, a broadcasting station ID, a service provider ID, and a content IP. The method of claim 13, And transmitting and receiving the service guide request message and the service guide response message through an application layer. The method of claim 13, The service guide request message is characterized in that for transmitting to the SP (Service Provider) instead of the MCBCS server. The method of claim 13, The MCBCS server performs an authentication procedure in association with a security server and generates authentication information through the authentication procedure, wherein the service guide response message received from the MCBCS server is generated along with the mapping table. Apparatus comprising a. The method of claim 13, Before the service guide response message is sent from the MCBCS server, The MCBCS server receives service guide information from a service provider (SP) periodically or in response to the service guide request message received from the terminal, And generating a service guide response message including the mapping table based on the service guide information received from the SP. The method of claim 19, The service guide information includes at least one of service guide contents and a service guide transmission format. The method of claim 16, The application layer is characterized in that the HyperText Transfer Protocol (HTTP) or the protocol (Interworkable). The method of claim 13, The mapping table is a mapping table corresponding to one of the MBS zone for the terminal, all MBS zones allowable for the terminal, and all MBS zones selected by the terminal within an allowable limit for the terminal. Device. The method of claim 13, The service guide request message includes at least one of a terminal IP and a base station ID. The method of claim 13, When one broadcast channel is selected in the mapping table, a MAC layer name tag for the broadcast channel is transmitted to a MAC layer unit, and data corresponding to the broadcast channel is received from the MAC layer unit. Application layer, Receiving a MAC layer name tag from the application layer unit, instructing a PHY layer unit to receive a flow corresponding to the MAC layer name tag, receiving the flow from the PHY layer unit, and receiving data corresponding to the flow; The apparatus further comprises a MAC layer for transmitting to the application layer. In the method of transmitting a service guide of the MCBCS (MultiCast and BroadCast Service) server in a broadband wireless access system, Receiving a service guide request message from a terminal; Transmitting a service guide response message to the terminal; Here, the service guide response message includes a mapping table of MAC layer name tags to application layer name tags for a broadcast channel, wherein the MAC layer name tag is a multicast connection identifier (MCID), and the application layer name The tag comprises a broadcast channel IP. The method of claim 25, The service guide response message may further include at least one of a broadcast schedule (TABLE OF BROADCASTING), authentication information (AUTHENTICATION INFORMATION), and an actual broadcast channel name mapped to an application layer name tag. The method of claim 25, The MAC layer name tag is at least one of the MCID, MBS (Multicast and Broadcast Service) zone ID, Logical Channel ID (LCID), and the application layer name tag is the broadcast channel IP, content ID, and broadcast channel. And at least one of an ID, a broadcasting station ID, a service provider (SP) ID, and a content IP. The method of claim 25, The service guide request message and the service guide response message are characterized in that for transmitting and receiving through the application layer. The method of claim 25, Performing an authentication procedure in association with a security server and generating authentication information through the authentication procedure; And generating the service guide response message by including the generated authentication information together with the mapping table. The method of claim 25, Receiving service guide information from a service provider (SP), And generating a service guide response message including the mapping table based on the service guide information received from the SP. The method of claim 30, The service guide information includes at least one of service guide contents and service guide delivery format. The method of claim 28, The application layer is characterized in that the HyperText Transfer Protocol (HTTP) or interworking protocol (Protocol). The method of claim 25, The mapping table is a mapping table corresponding to one of the MBS zone for the terminal, all MBS zones allowable for the terminal, and all MBS zones selected by the terminal within an allowable limit for the terminal. Way. The method of claim 25, The service guide request message comprises at least one of a terminal IP and a base station ID. In the service guide transmission apparatus of a multicast and broadcast service (MCBCS) server in a broadband wireless access system, Means for receiving a service guide request message from a terminal; Means for transmitting a service guide response message to the terminal; Here, the service guide response message includes a mapping table of MAC layer name tags to application layer name tags for a broadcast channel, wherein the MAC layer name tag is a multicast connection identifier (MCID), and the application layer name And the tag is a broadcast channel IP. 36. The method of claim 35 wherein The service guide response message may further include at least one of a broadcast schedule (TABLE OF BROADCASTING), authentication information (AUTHENTICATION INFORMATION), and an actual broadcast channel name mapped to an application layer name tag. 36. The method of claim 35 wherein The MAC layer name tag is at least one of the MCID, MBS (Multicast and Broadcast Service) zone ID, Logical Channel ID (LCID), and the application layer name tag is the broadcast channel IP, content ID, and broadcast channel. And at least one of an ID, a broadcasting station ID, a service provider ID, and a content IP. 36. The method of claim 35 wherein And transmitting and receiving the service guide request message and the service guide response message through an application layer. 36. The method of claim 35 wherein Means for performing an authentication procedure in association with a security server and generating authentication information through the authentication procedure; And means for generating the service guide response message including the generated authentication information together with the mapping table. 36. The method of claim 35 wherein Means for receiving service guide information from a service provider (SP), And means for generating a service guide response message including the mapping table based on the service guide information received from the SP. The method of claim 40, The service guide information includes at least one of service guide contents and a service guide transmission format. The method of claim 38, The application layer is characterized in that the HyperText Transfer Protocol (HTTP) or the protocol (Interworkable). 36. The method of claim 35 wherein The mapping table is a mapping table corresponding to one of the MBS zone for the terminal, all MBS zones allowable for the terminal, and all MBS zones selected by the terminal within an allowable limit for the terminal. Device. 36. The method of claim 35 wherein The service guide request message includes at least one of a terminal IP and a base station ID. delete delete delete delete delete delete delete delete delete delete delete delete

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