Broadcast service transmission method and device

Abstract

The present invention relates to a broadcast service transmission method and device, applied to a VDES terminal, the method comprising: monitoring a bulletin board signaling channel, obtaining a bulletin board message, the bulletin board message comprising a basic field and a reserved field, the content of the basic field comprising a time slot graph configuration, and the content of the reserved field comprising a time slot graph configuration; the content of the reserved field comprises broadcast service configuration information; judging whether the content of the reserved field can be analyzed or not; if yes, acquiring the broadcast service configuration information from the reserved field, and receiving broadcast data according to the broadcast service configuration information; and if not, acquiring the time slot graph configuration from the basic field, and receiving broadcast data according to the time slot graph configuration.

Description

Technical Field

[0001] This invention relates to the field of wireless communication technology, and more specifically to a broadcast service transmission method and apparatus. Background Technology

[0002] The Very High Frequency Data Exchange (VDES) system is a future maritime communication system developed based on the traditional Automatic Identification System (AIS). It is one of the core communication methods of electronic navigation and the global maritime distress and safety system led by the International Maritime Organization. VDE (Very High Frequency Data Exchange), as the core of VDES, is the foundation for VDES to achieve high-bandwidth data communication. It supports the transmission of information with various structures, supports real-time communication and information acknowledgment feedback mechanisms, and has been adjusted in terms of modulation methods and signal frame formats to suit specific application scenarios.

[0003] However, existing VDE designs are centered on ship-to-shore and ship-to-satellite two-way communication, and have not been specifically optimized for the one-to-many, low-latency, and high-reliability characteristics of broadcast services. For example, the lack of multicast technology application results in bandwidth waste due to repeated unicasting of duplicate information; and the static allocation of spectrum channels cannot adapt to sudden service demands. Summary of the Invention

[0004] The purpose of this invention is to provide a broadcast service transmission method and apparatus to optimize the ability of VDES to transmit broadcast services, thereby improving spectrum efficiency while reducing complexity.

[0005] To achieve the above objectives, the present invention provides a broadcast service transmission method applied to a VDES terminal, the method comprising:

[0006] Listen to the bulletin board signaling channel to obtain bulletin board messages. The bulletin board messages include basic fields and reserved fields. The content of the basic fields includes time slot diagram configuration, and the content of the reserved fields includes broadcast service configuration information.

[0007] Determine whether the content of the reserved field can be parsed;

[0008] If yes, the broadcast service configuration information is obtained from the reserved field, and broadcast data is received according to the broadcast service configuration information; if no, the time slot diagram configuration is obtained from the basic field, and broadcast data is received according to the time slot diagram configuration.

[0009] Optionally, receiving broadcast data according to the broadcast service configuration information specifically includes:

[0010] The data channel resources and modulation scheme of the broadcast service are determined based on the broadcast service configuration information.

[0011] Broadcast data is received on the data channel of the broadcast service using the modulation method of the broadcast service.

[0012] Optionally, the broadcast service configuration information includes resource indication values ​​and modulation and coding schemes; determining the data channel resources and modulation method of the broadcast service based on the broadcast service configuration information specifically includes:

[0013] The data channel resources for broadcast services are determined based on the resource indication value;

[0014] The modulation method for broadcast services is determined based on the modulation and coding scheme.

[0015] Optionally, determining the data channel resources for broadcast services based on the resource indication value specifically includes:

[0016] Intermediate parameters are calculated based on the resource indication value and the total number of channel pairs; the intermediate parameters satisfy the following relationship: Where x is an intermediate parameter. This represents the total number of channel pairs.

[0017] Based on the comparison results between the intermediate parameters and the total number of channel pairs, the starting channel pair index and the length of the continuously allocated channel pair indexes are determined to obtain each channel pair for the broadcast service; if ,but , ;like ,but , Wherein, RIV is the resource indication value. This indicates the index of the starting channel pair allocated to the broadcast service. Indicates the index length of consecutively allocated channel pairs. ;

[0018] The data channels of each channel pair in the broadcast service form the data channel of the broadcast service.

[0019] Optionally, receiving broadcast data is configured according to the time slot diagram, specifically including:

[0020] The time slots for the notification signaling channel are determined according to the time slot diagram configuration.

[0021] Based on the time slot of the announcement signaling channel, the announcement signaling channel is monitored, the resource allocation information is parsed, and the broadcast service scheduling information, including the data channel resources and modulation method of the broadcast service, is obtained from the resource allocation information.

[0022] According to the broadcast service scheduling information, broadcast data is received on the broadcast service data channel using the modulation method of the broadcast service.

[0023] Another aspect of the present invention provides a broadcast service transmission apparatus applied to a VDES terminal, the apparatus comprising:

[0024] The monitoring module is used to monitor the bulletin board signaling channel and obtain bulletin board messages. The bulletin board messages include basic fields and reserved fields. The content of the basic fields includes time slot diagram configuration, and the content of the reserved fields includes broadcast service configuration information.

[0025] The judgment module is used to determine whether the content of the reserved field can be parsed.

[0026] The receiving module is configured to, when the judgment result of the judgment module is yes, obtain the broadcast service configuration information from the reserved field and receive broadcast data according to the broadcast service configuration information; and when the judgment result of the judgment module is no, obtain the time slot diagram configuration from the basic field and receive broadcast data according to the time slot diagram configuration.

[0027] Optionally, receiving broadcast data according to the broadcast service configuration information specifically includes:

[0028] The data channel resources and modulation scheme of the broadcast service are determined based on the broadcast service configuration information.

[0029] Broadcast data is received on the data channel of the broadcast service using the modulation method of the broadcast service.

[0030] Optionally, the broadcast service configuration information includes resource indication values ​​and modulation and coding schemes; determining the data channel resources and modulation method of the broadcast service based on the broadcast service configuration information specifically includes:

[0031] The data channel resources for broadcast services are determined based on the resource indication value;

[0032] The modulation method for broadcast services is determined based on the modulation and coding scheme.

[0033] Optionally, determining the data channel resources for broadcast services based on the resource indication value specifically includes:

[0034] Intermediate parameters are calculated based on the resource indication value and the total number of channel pairs; the intermediate parameters satisfy the following relationship: Where x is an intermediate parameter. This represents the total number of channel pairs.

[0035] Based on the comparison results between the intermediate parameters and the total number of channel pairs, the starting channel pair index and the length of the continuously allocated channel pair indexes are determined to obtain each channel pair for the broadcast service; if ,but , ;like ,but , Wherein, RIV is the resource indication value. This indicates the index of the starting channel pair allocated to the broadcast service. Indicates the index length of consecutively allocated channel pairs. ;

[0036] The data channels of each channel pair in the broadcast service form the data channel of the broadcast service.

[0037] Optionally, receiving broadcast data is configured according to the time slot diagram, specifically including:

[0038] The time slots for the notification signaling channel are determined according to the time slot diagram configuration.

[0039] Based on the time slot of the announcement signaling channel, the announcement signaling channel is monitored, the resource allocation information is parsed, and the broadcast service scheduling information, including the data channel resources and modulation method of the broadcast service, is obtained from the resource allocation information.

[0040] According to the broadcast service scheduling information, broadcast data is received on the broadcast service data channel using the modulation method of the broadcast service. Attached Figure Description

[0041] Figure 1 A flowchart of a broadcast service transmission method according to an embodiment of the present invention;

[0042] Figure 2 This is a structural block diagram of a broadcast service transmission apparatus according to an embodiment of the present invention. Detailed Implementation

[0043] The preferred embodiments of the present invention are given below with reference to the accompanying drawings and described in detail.

[0044] VDES consists of a coastal base station (VDE-TER), a satellite (VDE-SAT), and a ship terminal (VDE-MOB). The coastal base station is responsible for near-shore ship data scheduling, the satellite provides coverage in the open sea, and the ship terminal, which can also be called the VDES terminal, is responsible for data transmission and reception.

[0045] In VDE, one frame equals one minute, divided into 2250 time slots. Each time slot is approximately 26.667 ms (60000 / 2250≈26.667). The default satellite billboard defines six channel pairs, labeled A, B, C, D, E, and F. Each channel pair has an associated VDE time slot diagram. Table 1 below shows the default VDE time slot diagrams for channel pair A and channel pair B in the 2092 protocol, defining the logical channel configuration and subframe division of 2250 time slots. This time slot diagram can be adaptively adjusted as needed.

[0046] Table 1: VDE Default Time Slot Diagram for Channels A and B

[0047]

[0048] The functions of each logical channel are as follows:

[0049] The BBSC (Bulletin Board Signalling Channel) is used for satellite information, frequency and time slot configuration; the ASC (Announcement Signalling Channel) is used for media access control, resource allocation, uplink acknowledgment, etc.; the DSCH (Data Signalling Channel) is used for downlink acknowledgment; the RAC (Random Access Channel) is used for resource requests, short messages, etc.; the DC (Data Channel) is used to carry uplink or downlink service data; and GS is the guard slot. Downlink service data supports modulation schemes of Link ID 25 / 26 / 27 / 28 / 29 / 32 / 33 / 34.

[0050] As shown in Table 2 below, BBSC includes 12 fields, numbered 1 to 12 respectively, which can be referred to as fields 1 to 12. Each field has different content to achieve different functions. The content of field 11 is 0 by default, and its function is to reserve it for future use. Therefore, field 11 can be called the reserved field, and the other fields besides field 11 are called basic fields.

[0051] Table 2: Fields of BBSC

[0052]

[0053] VDE supports downlink broadcast service transmission. In existing technologies, the value of the reserved field of BBSC is 0. During downlink broadcast service transmission, the satellite sends bulletin board messages through BBSC, and the terminal receives downlink broadcast data based on the bulletin board messages. The existing broadcast service transmission method specifically includes the following steps:

[0054] S1: The satellite is transmitting bulletin board messages on the BBSC;

[0055] S2: The terminal receives the bulletin board message and obtains the time slot map configuration;

[0056] S3: The satellite sends a resource allocation message to the ASC, indicating the service scheduling results;

[0057] S4: The terminal continuously listens to the ASC, parses the resource allocation message, and obtains the broadcast service scheduling information from the resource allocation message; for example, if the target station ID carried in the message is 0, it indicates that it is a broadcast service scheduling, and the broadcast service scheduling information includes the DC resources and modulation method of the broadcast service.

[0058] S5: According to the broadcast service scheduling information, use the modulation method of the broadcast service to receive downlink broadcast data on the DC of the broadcast service.

[0059] Existing broadcast service transmission methods require the participation of the ASC (Automatic Signalling Center). The DC resources and modulation methods used by broadcast services must first be obtained from the ASC. This has the following disadvantages:

[0060] 1) ASC resource overhead is large. Both broadcast and unicast services require ASC participation, which reduces the proportion of DC resources and leads to a decrease in system traffic.

[0061] 2) Terminals dedicated to broadcast services need to constantly monitor the ASCII interface to determine whether they need to receive broadcast services, which increases the complexity of terminal processing and wastes power.

[0062] To address the aforementioned problems in the existing technology, this invention provides a broadcast service transmission method. The reserved field of the BBSC is designed to indicate the channel and modulation scheme used by the broadcast service through broadcast service scheduling information. This eliminates the need for terminals capable of parsing the reserved field to monitor the presence of broadcast service scheduling information in the ASC of each subframe; instead, they can directly parse the bulletin board message of the BBSC to obtain the information. Compared to the existing technology, this significantly reduces implementation complexity.

[0063] like Figure 1 The flowchart shown is a broadcast service transmission method according to an embodiment of the present invention, which is applied to a VDES terminal. The method includes the following steps S100-S300:

[0064] S100: Monitors the bulletin board signaling channel and obtains bulletin board messages. The bulletin board messages include basic fields and reserved fields. The content of the basic fields includes the time slot diagram configuration, and the content of the reserved fields includes broadcast service configuration information.

[0065] The basic and reserved fields of the bulletin board signaling channel are shown in Table 2. In this invention, the reserved fields are extended for broadcast services, and the content of the reserved fields includes broadcast configuration information. Information on the reserved fields of this invention is shown in Table 3.

[0066] Table 3: Information on Reserved Fields

[0067]

[0068] As shown in Table 3, the broadcast configuration information includes RIV (Resource Indicator Value) and MCS (Modulation and Coding Scheme). RIV is used to define the frequency and bandwidth of the broadcast service, and MCS is used to define the Link ID used by the broadcast service.

[0069] S200: Determine whether the content of the reserved field can be parsed.

[0070] After receiving the bulletin board message, the terminal will determine whether it can parse the content of the reserved fields and determine the next action based on the result.

[0071] S300: If yes, obtain the broadcast service configuration information from the reserved field and receive broadcast data according to the broadcast service configuration information; if no, obtain the time slot diagram configuration from the basic field and receive broadcast data according to the time slot diagram configuration.

[0072] Based on their ability to parse the contents of reserved fields, terminals can be divided into two categories: broadcast service terminals and ordinary terminals. Broadcast service terminals can parse the contents of reserved fields, while ordinary terminals cannot. Therefore, broadcast service terminals parse the contents of reserved fields to obtain broadcast service configuration information and receive broadcast data according to this information. Ordinary terminals, unable to parse the contents of reserved fields, cannot obtain broadcast service configuration information; instead, they retrieve the timeslot configuration from the basic fields and receive broadcast data (if any) according to the timeslot configuration.

[0073] In some embodiments, receiving broadcast data according to broadcast service configuration information specifically includes:

[0074] Determine the data channel resources and modulation scheme for the broadcast service based on the broadcast service configuration information;

[0075] Using the modulation method of broadcast services, broadcast data is received on the data channel of broadcast services.

[0076] In some embodiments, a broadcast service terminal can determine the data channel resources for broadcast services based on RIV, as follows:

[0077] First calculate ,in, This indicates the total number of channel pairs. For example, if there are 6 channel pairs (A through F), then... =6, x is an intermediate parameter; then, combine x with... If a comparison is made, ,but , ;like ,but , ;in, This indicates the index of the starting channel pair allocated to the broadcast service. This indicates the index length of consecutively allocated channel pairs, with indices A through F represented by 0 through 5. When and Once determined, the channel pairs used for broadcast services can be obtained, namely the frequency and bandwidth used for broadcast services. The DC of the channel pairs used for broadcast services is the data channel resource for broadcast services.

[0078] The broadcast service terminal can determine the modulation method of the broadcast service based on the MCS, and map different modulation methods through the value of the MCS (different linkIDs represent different modulation and coding schemes).

[0079] In some embodiments, receiving broadcast data according to a time slot diagram configuration specifically includes:

[0080] Determine the ASC's time slots based on the time slot diagram configuration;

[0081] Based on the ASC time slot, the ASC is monitored, the resource allocation information is parsed, and the broadcast service scheduling information, including the data channel resources and modulation method of the broadcast service, is obtained from the resource allocation information.

[0082] According to the broadcast service scheduling information, broadcast data is received on the broadcast service DC using the modulation method of the broadcast service.

[0083] In other words, the way ordinary terminals receive broadcast data is the same as existing technologies. They all need to obtain broadcast service scheduling information from the ASC and receive downlink broadcast data based on the broadcast service scheduling information.

[0084] The broadcast service transmission method of this invention classifies terminals into broadcast service terminals and ordinary terminals based on whether the reserved fields of the BBSC can be parsed. Broadcast service terminals can receive broadcast data by parsing the reserved fields of the BBSC without listening to the ASC, thus reducing ASC channel overhead. Secondly, the reserved fields in the BBSC indicate one or more of A to F for downlink broadcast. The DC resources in these channel pairs will not be used for unicast, so there is no need to reserve DSCH for downlink feedback. The time slot resources saved above can be used for DC to carry downlink broadcast data. The final channel time slot diagram for broadcast transmission is shown in Table 4 below.

[0085] Table 4: Channel time slot diagram for broadcast transmission of the present invention

[0086]

[0087] Compared with the prior art, the present invention can significantly improve the traffic of broadcast services. Table 5 below shows the peak rate of broadcast services under different modulation methods. As can be seen from Table 5, the present invention improves the traffic by 13.5% to 25.0% compared with the prior art.

[0088] Table 5: Comparison of Broadcast Service Performance between the Invention and Existing Technologies

[0089]

[0090] like Figure 2As shown, this embodiment of the invention also provides a broadcast service transmission device applied to a VDES terminal. The device includes a monitoring module 10, a judgment module 20, and a receiving module 30.

[0091] The monitoring module 10 is used to monitor the bulletin board signaling channel and obtain bulletin board messages. The bulletin board messages include basic fields and reserved fields. The content of the basic fields includes time slot diagram configuration, and the content of the reserved fields includes broadcast service configuration information.

[0092] The judgment module 20 is used to determine whether the content of the reserved field can be parsed;

[0093] The receiving module 30 is configured to, when the judgment result of the judgment module is yes, obtain the broadcast service configuration information from the reserved field and receive broadcast data according to the broadcast service configuration information; and when the judgment result of the judgment module is no, obtain the time slot diagram configuration from the basic field and receive broadcast data according to the time slot diagram configuration.

[0094] The listening module 10, the judgment module 20, and the receiving module 30 are the functional modules of steps S100-S300 in the method embodiment, and their specific implementation methods are the same as those in the method embodiment. For details, please refer to the description in the method embodiment, which will not be repeated here.

[0095] Another embodiment of the present invention provides a readable storage medium having a computer program stored thereon, which, when executed in a computer, causes the computer to perform the steps of the broadcast service transmission method in the above embodiments of the present invention.

[0096] Another embodiment of the present invention provides an electronic device, which includes a memory and a processor. The memory stores executable code. When the processor executes the executable code, it performs the steps of the broadcast service transmission method in the above embodiments of the present invention.

[0097] The systems, devices, modules, or units described in the above embodiments can be implemented by computer chips or entities, or by products with certain functions. A typical implementation device is a computer. Specifically, a computer can be, for example, a personal computer, laptop computer, cellular phone, camera phone, smartphone, personal digital assistant, media player, navigation device, email device, game console, tablet computer, wearable device, or any combination of these devices.

[0098] For ease of description, the above apparatus is described in terms of its functions, divided into various units. Of course, in implementing this invention, the functions of each unit can be implemented in one or more software and / or hardware components.

[0099] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0100] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0101] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0102] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0103] In a typical configuration, an electronic device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0104] Memory may include non-persistent storage in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0105] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information by any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by electronic devices. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0106] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0107] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0108] This invention can be described in the general context of computer-executable instructions, such as program modules, that are executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc., that perform a specific task or implement a specific abstract data type. This invention can also be practiced in distributed computing environments where tasks are performed by remote processing devices connected via a communication network. In distributed computing environments, program modules can reside in local and remote computer storage media, including storage devices.

[0109] The various embodiments in this invention are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0110] The foregoing has described specific embodiments of the invention. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps described in the claims may be performed in a different order than that shown in the embodiments and still achieve the desired results. Furthermore, the processes depicted in the drawings do not necessarily require the specific or sequential order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0111] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the invention. Various variations can be made to the above embodiments of the present invention. That is, all simple and equivalent changes and modifications made based on the claims and description of this invention fall within the protection scope of the claims of this patent. All aspects not described in detail in this invention are conventional technical content.

Claims

1. A broadcast service transmission method, characterized in that, For terminals applied to VDES, the method includes: Listen to the bulletin board signaling channel to obtain bulletin board messages. The bulletin board messages include basic fields and reserved fields. The content of the basic fields includes time slot diagram configuration, and the content of the reserved fields includes broadcast service configuration information. Determine whether the content of the reserved field can be parsed; If yes, the broadcast service configuration information is obtained from the reserved field, and broadcast data is received according to the broadcast service configuration information; if no, the time slot diagram configuration is obtained from the basic field, and broadcast data is received according to the time slot diagram configuration.

2. The broadcast service transmission method according to claim 1, characterized in that, Receiving broadcast data according to the broadcast service configuration information specifically includes: The data channel resources and modulation scheme of the broadcast service are determined based on the broadcast service configuration information. Broadcast data is received on the data channel of the broadcast service using the modulation method of the broadcast service.

3. The broadcast service transmission method according to claim 2, characterized in that, The broadcast service configuration information includes resource indication values ​​and modulation and coding schemes; determining the data channel resources and modulation method for the broadcast service based on the broadcast service configuration information specifically includes: The data channel resources for broadcast services are determined based on the resource indication value; The modulation method for broadcast services is determined based on the modulation and coding scheme.

4. The broadcast service transmission method according to claim 3, characterized in that, Determining the data channel resources for broadcast services based on the resource indication value specifically includes: Intermediate parameters are calculated based on the resource indication value and the total number of channel pairs; the intermediate parameters satisfy the following relationship: Where x is an intermediate parameter. This represents the total number of channel pairs. Based on the comparison results between the intermediate parameters and the total number of channel pairs, the starting channel pair index and the length of the continuously allocated channel pair indexes are determined to obtain each channel pair for the broadcast service; if ,but , ;like ,but , Wherein, RIV is the resource indication value. This indicates the index of the starting channel pair allocated to the broadcast service. Indicates the index length of consecutively allocated channel pairs. ; The data channels of each channel pair in the broadcast service form the data channel of the broadcast service.

5. The broadcast service transmission method according to claim 1, characterized in that, The configuration for receiving broadcast data according to the time slot diagram specifically includes: The time slots for the notification signaling channel are determined according to the time slot diagram configuration. Based on the time slot of the announcement signaling channel, the announcement signaling channel is monitored, the resource allocation information is parsed, and the broadcast service scheduling information, including the data channel resources and modulation method of the broadcast service, is obtained from the resource allocation information. According to the broadcast service scheduling information, broadcast data is received on the broadcast service data channel using the modulation method of the broadcast service.

6. A broadcast service transmission device, characterized in that, The device is used in a VDES terminal and includes: The monitoring module is used to monitor the bulletin board signaling channel and obtain bulletin board messages. The bulletin board messages include basic fields and reserved fields. The content of the basic fields includes time slot diagram configuration, and the content of the reserved fields includes broadcast service configuration information. The judgment module is used to determine whether the content of the reserved field can be parsed. The receiving module is configured to, when the judgment result of the judgment module is yes, obtain the broadcast service configuration information from the reserved field and receive broadcast data according to the broadcast service configuration information; and when the judgment result of the judgment module is no, obtain the time slot diagram configuration from the basic field and receive broadcast data according to the time slot diagram configuration.

7. The broadcast service transmission apparatus according to claim 6, characterized in that, Receiving broadcast data according to the broadcast service configuration information specifically includes: The data channel resources and modulation scheme of the broadcast service are determined based on the broadcast service configuration information. Broadcast data is received on the data channel of the broadcast service using the modulation method of the broadcast service.

8. The broadcast service transmission apparatus according to claim 7, characterized in that, The broadcast service configuration information includes resource indication values ​​and modulation and coding schemes; determining the data channel resources and modulation method for the broadcast service based on the broadcast service configuration information specifically includes: The data channel resources for broadcast services are determined based on the resource indication value; The modulation method for broadcast services is determined based on the modulation and coding scheme.

9. The broadcast service transmission apparatus according to claim 8, characterized in that, Determining the data channel resources for broadcast services based on the resource indication value specifically includes: Intermediate parameters are calculated based on the resource indication value and the total number of channel pairs; the intermediate parameters satisfy the following relationship: Where x is an intermediate parameter. This represents the total number of channel pairs. Based on the comparison results between the intermediate parameters and the total number of channel pairs, the starting channel pair index and the length of the continuously allocated channel pair indexes are determined to obtain each channel pair for the broadcast service; if ,but , ;like ,but , Wherein, RIV is the resource indication value. This indicates the index of the starting channel pair allocated to the broadcast service. Indicates the index length of consecutively allocated channel pairs. ; The data channels of each channel pair in the broadcast service form the data channel of the broadcast service.

10. The broadcast service transmission apparatus according to claim 6, characterized in that, The configuration for receiving broadcast data according to the time slot diagram specifically includes: The time slots for the notification signaling channel are determined according to the time slot diagram configuration. Based on the time slot of the announcement signaling channel, the announcement signaling channel is monitored, the resource allocation information is parsed, and the broadcast service scheduling information, including the data channel resources and modulation method of the broadcast service, is obtained from the resource allocation information. According to the broadcast service scheduling information, broadcast data is received on the broadcast service data channel using the modulation method of the broadcast service.

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