Data transmission method and system based on wireless communication equipment

Abstract

The invention relates to the technical field of train control, and provides a data transmission method and system based on wireless communication equipment, the system comprises a host and a plurality of sets of wireless communication equipment, and the host comprises a main system and a standby system; each set of wireless communication equipment comprises a main system and a standby system, and one exclusive frequency point is allocated to each set of wireless communication equipment; the host main system is used for generating a data packet and sending the generated data packet to the main systems and the standby systems of the plurality of sets of wireless communication equipment; the main system of each set of wireless communication equipment is used for receiving data packets sent by the main system of the host and sending the data packets by using respective exclusive frequency points; and the standby system of each set of wireless communication equipment is used for redundant backup of the main system of the wireless communication equipment, sending communication data for channel inspection to the main system of the host, and switching and taking over the work of the main system of the wireless communication equipment when the main system of the wireless communication equipment breaks down. A plurality of wireless communication devices and frequency points are used for sending data at the same time, and the availability of sending wireless messages is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of train control, and in particular, relates to a data transmission method and system based on wireless communication equipment. Background Art

[0002] In this train control system based on the 400MHz wireless broadcast solution, the station data server (SDS) compiles the transponder wireless message according to the received section direction information, route information and speed limit information, combined with the locally stored static line data. SDS sends the encrypted transponder message to the on-board equipment by wireless broadcast through wireless communication equipment. The on-board equipment matches the transponder message received from the wireless according to the transponder number through the passive transponder arranged on the ground, and uses this information to control the safe operation of the train.

[0003] In the above process, the on-board equipment can only receive the transponder wireless message in the area covered by the wireless signal. The wireless signal should cover the entire station, such as Figure 1 As shown. When the train runs into the coverage of the wireless communication base station network, the onboard equipment will receive the message information from the wireless communication base station, and the onboard equipment will receive the information of the passive transponder arranged on the ground. The passive transponder number can be matched to the transponder message received from the wireless. Combined with the track circuit information received by the train, a target-distance curve can be generated to achieve safe operation of the train.

[0004] In the above process, an SDS device is connected to a set of wireless communication equipment, which includes system I and system II, that is, the main system and the backup system. SDS runs at a fixed cycle, and continuously polls and sends the transponder messages of the entire station on the only available frequency point. At most one general information packet is allowed to be sent per cycle. This general message packet contains multiple transponder wireless messages. A single transponder group wireless message consists of at least 1 and at most 8 transponder wireless message information. SDS completes the sending of all transponder message information in a single transponder group within a maximum of 2 consecutive cycles, and all transponder messages of the station can be sent after multiple cycles. Since it takes a while for SDS to send the transponder message that the station currently needs to send, for a single transponder, the transponder wireless message is not sent completely in real time, and there may be a certain delay. If the train runs too fast, it may not receive all transponder message information. Therefore, the delayed arrival of the message restricts the speed increase of the train. Summary of the invention

[0005] To solve the above problems, the present disclosure provides a data transmission method and system based on wireless communication equipment, which adopts multiple sets of wireless communication equipment and multiple frequency points for data transmission and can quickly send out data packets.

[0006] The present invention proposes a data transmission system based on wireless communication equipment, the system comprising: a host and multiple sets of wireless communication equipment, wherein: the host comprises a main system and a backup system; each set of wireless communication equipment comprises a main system and a backup system, and each set of wireless communication equipment is allocated to use one exclusive frequency point; The host main system is used to generate data packets and send the generated data packets to the main system and backup system of multiple sets of wireless communication devices; The host backup system is used for redundant backup of the host main system, sends communication data for channel inspection to the wireless communication device, and switches and takes over the work of the main system when the main system fails; The main system of each set of wireless communication equipment is used to receive data packets sent by the host main system and send data packets using their own dedicated frequency points; The backup system of each set of wireless communication equipment is used for redundant backup of the main system of the wireless communication equipment, sends communication data for channel inspection to the host main system, and switches and takes over the work of the main system of the wireless communication equipment when the main system of the wireless communication equipment fails.

[0007] Further, the host main system and the host backup system both have a left network port and a right network port, and the main system and the backup system of each set of wireless communication equipment both have a left network port and a right network port; The left network port of the host main system is respectively connected to the left network port of the main system of each set of wireless communication equipment, and the right network port of the host main system is respectively connected to the right network port of the backup system of each set of wireless communication equipment; The left network port of the host backup system is respectively connected to the left network port of the backup system of each set of wireless communication equipment, and the right network port of the host backup system is respectively connected to the right network port of the host system of each set of wireless communication equipment.

[0008] Furthermore, the left network port of the main system of the host and the left network port of the main system of each set of wireless communication equipment, as well as the left network port of the backup system of the host and the left network port of the backup system of each set of wireless communication equipment are connected through the first left network switch and the second left network switch, wherein the physical interface between the host and the first left network switch, and between the second left network switch and the wireless communication equipment adopts RJ-45 Ethernet communication, and the first left network switch and the second left network switch adopt optical fiber communication; The right network port of the main system of the host and the right network port of the backup system of each set of wireless communication equipment, as well as the right network port of the backup system of the host and the right network port of the main system of each set of wireless communication equipment are connected through the first right network switch and the second right network switch. The physical interface between the host and the first right network switch and the second right network switch and the wireless communication equipment adopts RJ-45 Ethernet communication, and optical fiber communication is adopted between the first right network switch and the second right network switch.

[0009] Furthermore, the host main system is further used to receive a data packet containing extended frequency point information sent by the main system of the wireless communication device before generating the data packet, wherein when multiple valid frequency points are configured in the extended frequency point information, it means that the receiving end outside the data transmission system needs to splice the data packets received from these frequency points for use; The host system is specifically used to generate a data packet using the extended frequency point information.

[0010] Furthermore, the main system of the wireless communication device is also used to immediately perform dual-system switching and switch to the backup system when it fails to receive complete and verified data from the host main system for N seconds, where N is a natural number.

[0011] Furthermore, the host main system is also used to perform dual-system switching to the backup system after failing to receive a complete and verified data packet sent by the main system of the wireless communication device for M seconds, if the channel between the host backup system and the main system of the wireless communication device is in a normal state and can receive valid information from the main system of the wireless communication device; otherwise, the dual-system switching should not be performed, wherein M is greater than N and M is a natural number.

[0012] Furthermore, the host is a station data server, and the generated data packet is a transponder wireless message.

[0013] On the other hand, the present invention proposes a data transmission method based on a wireless communication device, the method is based on a data transmission system including a host and multiple sets of wireless communication devices, wherein: the host includes a main system and a backup system; each set of wireless communication devices includes a main system and a backup system, and each set of wireless communication devices is allocated to use one exclusive frequency point; The method comprises: The host main system generates data packets, and the host backup system sends communication data for channel inspection to the wireless communication device, and switches and takes over the work of the main system when the main system fails; The host main system sends the generated data packets to the main systems and backup systems of the multiple wireless communication devices; The main system of each set of wireless communication equipment uses its own exclusive frequency to send data packets.

[0014] Furthermore, before the host system generates the data packet, the method further includes: Receive a data packet containing spread spectrum point information sent by a main system of a wireless communication device, wherein when multiple valid frequency points are configured in the spread spectrum point information, it means that a receiving end outside the data transmission system needs to splice the data packets received from these frequency points for use; The data packet generated by the host system specifically includes: The host system generates a data packet using the spread spectrum point information.

[0015] Furthermore, in the train control system, the host is a station data server, and the generated data packet is a transponder wireless message.

[0016] Compared with the prior art, the present invention has the following advantages: 1. Using multiple sets of wireless communication equipment can send data at the same time. The entire system can send multiple general information packets in each cycle, and can quickly send out the transponder message that the station currently needs to send, realizing the real-time sending of transponder wireless messages, improving the availability of sending wireless messages, and to a certain extent avoiding the situation where a single transponder cannot receive all transponder message information due to the high speed of the train, thereby helping to increase the speed of the train.

[0017] 2. Wireless communication equipment can be added as needed and frequencies can be allocated, which improves the scalability of the system.

[0018] 3. "Extended frequency information" is added to the data packet format. The receiving end determines whether the data packet needs to be spliced ​​by checking the configuration in the "frequency list" of the "Extended frequency information", further improving the efficiency of the transponder wireless message transmission.

[0019] Other features and advantages of the present disclosure will be described in the following description, and partly become apparent from the description, or be understood by implementing the present disclosure. The purpose and other advantages of the present disclosure can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 A schematic diagram of wireless communication base station network coverage is shown; Figure 2 A schematic diagram showing connections between devices in a data transmission system according to an embodiment of the present disclosure is shown; Figure 3 A logical connection diagram between devices in a data transmission system according to an embodiment of the present disclosure is shown; Figure 4 A flow chart of a data transmission method according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0023] The embodiment of the present invention discloses a data transmission system based on wireless communication equipment, the system comprising: a host and multiple sets of wireless communication equipment, wherein: the host comprises a main system and a backup system; each set of wireless communication equipment comprises a main system and a backup system, and each set of wireless communication equipment is allocated to use one exclusive frequency point; The host main system is used to generate data packets and send the generated data packets to the main system and backup system of multiple sets of wireless communication devices; The host backup system is used for redundant backup of the main system. It sends communication data to external devices such as wireless communication devices for channel inspection to ensure that the communication link between the backup system and the main system and external devices is unobstructed. It can switch and take over the work of the main system when the main system fails, and is used to generate data packets and send the generated data packets to the main system and backup system of the wireless communication device; The main system of each set of wireless communication equipment is used to receive data packets sent by the host main system and send data packets using their own dedicated frequency points; The backup system of each set of wireless communication equipment is used for redundant backup of the main system. It sends communication data to the host main system for channel inspection to ensure that the communication link between the backup system and the main system and the host main system is unobstructed. When the main system fails, it can switch and take over the work of the main system, receive data packets sent by the host main system, and send data packets using their own dedicated frequency points.

[0024] The host main system and the backup system both have a left network port and a right network port, and the main system and the backup system of each set of wireless communication equipment both have a left network port and a right network port; the logical connection relationship between the host and each set of wireless communication equipment is: The left network port of the host main system is respectively connected to the left network port of the main system of each set of wireless communication equipment, and the right network port of the host main system is respectively connected to the right network port of the backup system of each set of wireless communication equipment; The left network port of the host backup system is respectively connected to the left network port of the backup system of each set of wireless communication equipment, and the right network port of the host backup system is respectively connected to the right network port of the host system of each set of wireless communication equipment.

[0025] This connection method ensures the independent transmission of the left and right networks. If any network has a transmission problem, the other network can maintain uninterrupted data transmission. The redundant configuration of the equipment ensures that any device failure will not cause data transmission failure.

[0026] The physical interface between the host and the switch, and between the switch and the wireless communication device uses RJ-45 Ethernet communication, and optical fiber communication is used between switches.

[0027] Specifically, the left network port of the main system of the host and the left network port of the main system of each set of wireless communication equipment, as well as the left network port of the backup system of the host and the left network port of the backup system of each set of wireless communication equipment are connected through the first left network switch and the second left network switch, wherein the physical interface between the host and the first left network switch, and between the second left network switch and the wireless communication equipment adopts RJ-45 Ethernet communication, and the first left network switch and the second left network switch adopt optical fiber communication; The right network port of the main system of the host and the right network port of the backup system of each set of wireless communication equipment, as well as the right network port of the backup system of the host and the right network port of the main system of each set of wireless communication equipment are connected through the first right network switch and the second right network switch. The physical interface between the host and the first right network switch and the second right network switch and the wireless communication equipment adopts RJ-45 Ethernet communication, and optical fiber communication is adopted between the first right network switch and the second right network switch.

[0028] Specifically, the data transmission between the host and the wireless communication device adopts the UDP protocol. The host stores the necessary data for packet assembly and receives information transmitted by the external device to perform real-time framing of the data packet. After the wireless communication device verifies the data packet, it can use 400MHz frequency wireless broadcast to send the data packet to the receiving end.

[0029] The number of wireless communication equipment is determined according to actual needs. Each set of wireless communication equipment includes a main system and a backup system. The data transmission system here includes at least 2 sets of wireless communication equipment. The first set is the wireless communication equipment I main system and the wireless communication equipment I backup system; the second set is the wireless communication equipment II main system and the wireless communication equipment II backup system.

[0030] The following uses two sets of wireless communication equipment as an example to illustrate the solution of the embodiment of the present invention.

[0031] The connection of the data transmission system including the host and two sets of wireless communication devices is as follows Figure 2 The communication network is configured in a redundant manner, and the host and wireless communication equipment use dual networks and dual systems. By default, the host system I and each set of wireless communication equipment system I are the main system, and the host system II and each set of wireless communication equipment system II are the backup system.

[0032] The left network port of the host main system is connected to the left network port of the main system of each wireless communication device, the right network port of the host main system is connected to the right network port of the backup system of each wireless communication device, the left network port of the host backup system is connected to the left network port of the backup system of each wireless communication device, and the right network port of the host backup system is connected to the right network port of the main system of each wireless communication device. This connection method ensures the independent transmission of the left and right networks. In the event of a transmission problem in any network, the other network can maintain uninterrupted data transmission. The redundant configuration of the equipment ensures that any equipment failure will not cause data transmission failure. The logical connection diagram between devices in the data transmission system is shown in the figure below. Figure 3 shown.

[0033] In addition, the wireless communication device will send satellite UTC clock information, packet length check results and device operation status data packets to the host at a fixed period. Both the main system and backup system of the wireless communication device send data to the host, but the host only uses the main system data of the wireless communication device, and the backup system data is only used for channel inspection.

[0034] In order to expand the flexibility of frequency point use and further improve the efficiency of data packet transmission, the embodiment of the present invention modifies the format of the data packet sent by the wireless communication device to the host, and adds a spread spectrum point information data block to illustrate the frequency point list of the spliced ​​information. The specific data packet format is shown in Table 1 below. The spread spectrum point information stores the frequency point list currently used, and its data packet format is shown in Table 2 below: Table 1 Data packet format sent by wireless communication device to host

[0035] Table 2 Data packet format of spread spectrum point information

[0036] After the host receives the data packet sent by the wireless communication device, which includes the UTC clock information of the sending satellite, the packet length check result, the device operating status and the spread spectrum point information, the host generates a data packet using the spread spectrum point information. When multiple valid frequency points are configured in the spread spectrum point information, it means that the receiving end outside the data transmission system needs to splice the data packets received from these frequency points for use; when multiple valid frequency points are configured in the spread spectrum point information, only one default frequency point is configured, which means that the receiving end outside the data transmission system can receive data from any valid frequency point without splicing the data.

[0037] After the wireless communication device receives the data packet sent by the host, it does not check the content. If the interface version check information fails, the data packet is unavailable. The length of the data packet in the data packet is checked. If the check is wrong, the entire data packet is discarded. Since the data transmission between the host and the wireless communication device uses the UDP protocol, in order to ensure that the information received by the wireless communication device is complete and correct, the first 15 bytes in the double 32-bit CRC check table are used. When the host does not send data, the wireless communication device sends a 44-byte empty data packet, which can be used as a channel check with the host.

[0038] To ensure the confidentiality of the data packet, it is also necessary to encrypt the data packet. The encryption algorithm is based on the key library, and the key is strictly managed in the train control system. The length of the data packet after the package is completed is greater than or equal to L min Bytes and less than or equal to L max Bytes, where the length of the user data packet (or general message packet) must be less than or equal to (L max -L min The host sends encrypted data packets to the wireless communication device at a fixed period. The host only sends data packets to the wireless communication device, and the standby system does not send data packets.

[0039] Take the use of two sets of wireless communication equipment as an example: to avoid co-frequency interference between different wireless communication equipment, two frequency points are divided, and each set of wireless communication equipment is allocated to use one frequency point, and the air interface rate is not less than 9.6kbps. Each frequency point sends a group of data packets to the receiving end, a total of two groups of data packets, which can ensure that the message transmission of any transponder group is completed within one transmission cycle.

[0040] After receiving the data packet, the receiving end checks the frequency points configured in the "spread spectrum point information", indicating that the on-board equipment can splice and use the information received from these frequency points and store it at the receiving end. If you need to send more data, or send the station data in fewer cycles, you can continue to add wireless communication equipment, re-divide the frequency points, and send more data packets at the same time to further increase the communication capacity. If you do not need to send too much data, two sets of wireless communication equipment send the same data packet at the same time. After receiving the data packet, the receiving end checks that only one default frequency point is configured in the "spread spectrum point information", indicating that data from any valid frequency point can be received without splicing the data, and the received data packet is directly stored at the receiving end.

[0041] In general, the I system between the host and each wireless communication device is the main system. When the host fails to receive complete and verified main system data from the wireless communication device for 6 seconds, the host shall consider that the communication with the wireless communication device is interrupted.

[0042] When the communication channel between the host main system and the wireless communication device fails, the dual system switch should be performed according to the following requirements to restore communication: 1. The order of dual-system switching between systems is as follows: when the main system of the wireless communication device fails to receive complete and verified data from the host main system for N seconds, the dual-system switching is immediately executed, switching from the main system to the backup system, where N is a natural number.

[0043] 2. When the host main system fails to receive complete and verified data packets from the wireless communication device's main system for M (M>N) seconds, if the channel between the host backup system and the wireless communication device's main system is in a normal state and can receive valid information from the wireless communication device's main system, then dual-system switching is performed from the main system to the backup system. Otherwise, dual-system switching is not performed to avoid affecting communication with other systems, where M is a natural number.

[0044] 3. If the receiver receives a complete and verified data from a connection channel, it can be considered that the communication of the channel has been restored.

[0045] Based on the above system, the embodiment of the present disclosure also provides a data transmission method based on a wireless communication device, such as Figure 4 As shown, the following steps are included: Step 401: The host main system generates a data packet, and the host backup system sends communication data for channel inspection to the wireless communication device, and switches and takes over the work of the main system when the main system fails; Step 402: The host main system sends the generated data packet to the main system and backup system of multiple sets of wireless communication devices; Step 403: The main system of each set of wireless communication equipment uses its own dedicated frequency point to send a data packet.

[0046] Before the host system generates the data packet, the method further includes: Receiving a data packet including spread spectrum frequency point information sent by a wireless communication device, wherein when multiple valid frequency points are configured in the spread spectrum point information, it indicates that a receiving end outside the data transmission system needs to splice the data packets received from these frequency points for use; The data packet generated by the host system specifically includes: The host system generates a data packet using the spread spectrum point information.

[0047] In the above-mentioned data transmission system and data transmission system method, the host is a station data server, and the generated data packet is a transponder wireless message.

[0048] In this train control system, when the data packet information sent by the station data server is complete and correct, the wireless communication device will send the data packet to the receiving end in the form of wireless broadcast at a frequency of 400MHz. The on-board equipment can receive wireless broadcast signals with a frequency of 400MHz~430MHz, so the solution of the embodiment of the present invention can be used to fully utilize the frequency of 400MHz~430MHz, set multiple frequency points to be allocated to multiple sets of wireless communication devices, use multiple sets of wireless communication devices to send data packets, and increase communication capacity.

[0049] In the scheme of the embodiment of the present invention, 1. Multiple wireless communication devices are used to send data simultaneously, thereby improving the availability of sending wireless messages. 2. Wireless communication devices can be increased as needed and frequencies can be allocated at the same time. 3. "Extended frequency information" is added to the data packet format, and the configuration in the "frequency list" of the "Extended frequency information" is checked to determine whether the data packet needs to be spliced, and the identification of the default frequency and invalid frequency is determined, thereby improving the flexibility of frequency use and the efficiency of data packet sending.

[0050] Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A data transmission system based on wireless communication equipment, characterized in that: The system comprises: a host and multiple sets of wireless communication devices, wherein: the host comprises a main system and a backup system; each set of wireless communication devices comprises a main system and a backup system, and each set of wireless communication devices is allocated to use one exclusive frequency point; The host main system is used to generate data packets and send the generated data packets to the main system and backup system of multiple sets of wireless communication devices; The host backup system is used for redundant backup of the host main system, sends communication data for channel inspection to the wireless communication device, and switches and takes over the work of the main system when the main system fails; The main system of each set of wireless communication equipment is used to receive data packets sent by the host main system and send data packets using their own dedicated frequency points; The backup system of each set of wireless communication equipment is used for redundant backup of the main system of the wireless communication equipment, sends communication data for channel inspection to the host main system, and switches and takes over the work of the main system of the wireless communication equipment when the main system of the wireless communication equipment fails.

2. The data transmission system according to claim 1, characterized in that: The host main system and the host backup system both have a left network port and a right network port, and the main system and the backup system of each set of wireless communication equipment both have a left network port and a right network port; The left network port of the host main system is respectively connected to the left network port of the main system of each set of wireless communication equipment, and the right network port of the host main system is respectively connected to the right network port of the backup system of each set of wireless communication equipment; The left network port of the host backup system is respectively connected to the left network port of the backup system of each set of wireless communication equipment, and the right network port of the host backup system is respectively connected to the right network port of the host system of each set of wireless communication equipment.

3. The data transmission system according to claim 2, characterized in that: The left network port of the main system of the host and the left network port of the main system of each set of wireless communication equipment, as well as the left network port of the backup system of the host and the left network port of the backup system of each set of wireless communication equipment are connected through the first left network switch and the second left network switch, wherein the physical interface between the host and the first left network switch, and between the second left network switch and the wireless communication equipment adopts RJ-45 Ethernet communication, and the first left network switch and the second left network switch adopt optical fiber communication; The right network port of the main system of the host and the right network port of the backup system of each set of wireless communication equipment, as well as the right network port of the backup system of the host and the right network port of the main system of each set of wireless communication equipment are connected through the first right network switch and the second right network switch. The physical interface between the host and the first right network switch and the second right network switch and the wireless communication equipment adopts RJ-45 Ethernet communication, and optical fiber communication is adopted between the first right network switch and the second right network switch.

4. The data transmission system according to claim 1, characterized in that: The host main system is further used to receive a data packet containing extended frequency point information sent by the main system of the wireless communication device before generating the data packet, wherein when multiple valid frequency points are configured in the extended frequency point information, it means that the receiving end outside the data transmission system needs to splice the data packets received from these frequency points for use; The host system is specifically used to generate a data packet using the extended frequency point information.

5. The data transmission system according to claim 1, characterized in that: The main system of the wireless communication device is also used to immediately perform dual-system switching and switch to the backup system when it fails to receive complete and verified data from the host main system for N seconds, where N is a natural number.

6. The data transmission system according to claim 5, characterized in that: The host main system is also used to perform dual-system switching to the backup system after failing to receive a complete and verified data packet sent by the main system of the wireless communication device for M seconds, if the channel between the host backup system and the main system of the wireless communication device is in a normal state and can receive valid information from the main system of the wireless communication device, otherwise the dual-system switching should not be performed, wherein M is greater than N and M is a natural number.

7. The data transmission system according to any one of claims 1 to 6, characterized in that: The host is a station data server, and the generated data packet is a transponder wireless message.

8. A data transmission method based on a wireless communication device, characterized in that: The method is based on a data transmission system including a host and multiple sets of wireless communication devices, wherein: the host includes a main system and a backup system; each set of wireless communication devices includes a main system and a backup system, and each set of wireless communication devices is allocated to use one exclusive frequency point; The method comprises: The host main system generates data packets, and the host backup system sends communication data for channel inspection to the wireless communication device, and switches and takes over the work of the main system when the main system fails; The host main system sends the generated data packets to the main systems and backup systems of the multiple wireless communication devices; The main system of each set of wireless communication equipment uses its own exclusive frequency to send data packets.

9. The method according to claim 8, characterized in that Before the host system generates the data packet, the method further includes: Receive a data packet containing spread spectrum point information sent by a main system of a wireless communication device, wherein when multiple valid frequency points are configured in the spread spectrum point information, it means that a receiving end outside the data transmission system needs to splice the data packets received from these frequency points for use; The data packet generated by the host system specifically includes: The host system generates a data packet using the spread spectrum point information.

10. The method according to any one of claims 8 or 9, characterized in that: The host is a station data server, and the generated data packet is a transponder wireless message.

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