An air interface upgrading method and system, an electronic device, and a storage medium

Abstract

The application relates to the technical field of wireless communication, in particular to an air interface upgrading method and system, an electronic device and a storage medium. The application switches a control channel from a normal signaling mode to a large bandwidth upgrading mode at a base station side, and uses confirmation signaling to ensure that an upgrading package is issued after a terminal has migrated out of a service channel, so that upgrading traffic is completely decoupled from the service channel, service channel resources are released, normal services of other terminals are not affected, and fast upgrading is achieved by breaking through the original narrowband rate bottleneck.

Description

Technical Field

[0001] This application relates to the field of wireless communication technology, specifically to an air interface upgrade method, system, electronic device, and storage medium. Background Technology

[0002] In practical applications of power wireless private networks, narrowband private network trunking communication technology is widely used. These systems typically support multiple carrier bandwidth configurations (e.g., 25kHz, 50kHz, 100kHz) and multiple modulation schemes (e.g., GMSK, 8PSK, 16QAM). To ensure the real-time and deterministic nature of terminal service scheduling, existing technologies introduce a "constant connection" mechanism. This means that the system assigns fixed terminals at the network layer, binding each terminal to a specific service time slot in the service channel.

[0003] Under this mechanism, when an air interface software upgrade is required for a terminal, the conventional approach in existing technology is to directly transmit the upgrade data packet on the service channel allocated to that terminal, utilizing its bound service time slot. Taking a typical 25kHz bandwidth combined with 8PSK modulation as an example, its net rate per time slot is approximately 25kbps. For a typical upgrade file of approximately 3MB, if all four service time slots are bound for transmission, the air interface time will take approximately 16 minutes; if only a single service time slot is used, the time will be as long as 64 minutes.

[0004] However, the above-mentioned existing technical solutions have at least the following drawbacks and shortcomings: First, its fundamental flaw lies in the fact that the air interface upgrade process and regular service communication share the "service channel" resources, resulting in a strong coupling between the transmission of upgrade data and normal service data in terms of time slot resources. Upgrade data packets can only be transmitted within fixed service time slots, and the transmission rate is locked within the inherent narrowband modulation capability of the service channel (such as 25kbps). Even with time slot binding, the upgrade time is extremely long (16 to 64 minutes) due to the low rate ceiling, making it difficult to meet the engineering requirements of rapid iteration in the field.

[0005] Secondly, due to the aforementioned resource coupling structure, when a base station attempts to bind multiple service time slots to a single terminal in order to shorten upgrade time, these time slots will be exclusively occupied by that upgrade service during the lengthy upgrade process. This directly deprives other terminals of the opportunity to use these shared time slots to send normal service data, resulting in prolonged network communication interruptions or service delays, severely impacting the normal operation of other terminal devices in the power grid wireless private network.

[0006] In summary, due to the intertwined negative effects of "poor upgrade timeliness" and "interference with normal services," existing service channel upgrade solutions are essentially unusable in practical power grid engineering applications. Therefore, how to decouple the strong binding relationship between the upgrade process and service channel resources, and achieve rapid air interface upgrades of terminal software while ensuring that the normal services of other terminals are not affected, is a technical challenge that urgently needs to be solved in this field. Summary of the Invention

[0007] The purpose of this application is to provide an air interface upgrade method, system, electronic device, and storage medium to solve the problems of rate bottleneck and service interference caused by upgrade data being transmitted only in service channel time slots in the prior art.

[0008] To achieve the above objectives, the technical solution adopted in this application is as follows: According to one aspect of the embodiments of this application, an air interface upgrade method is provided, applied to a base station in a power wireless private network, comprising: sending control signaling to a target terminal to be upgraded, wherein the control signaling is used to notify the target terminal to enter an upgrade mode; switching the control channel from a normal mode to an upgrade mode, wherein in the normal mode the control channel is used for signaling interaction, and in the upgrade mode the control channel is used to temporarily transmit upgrade packets in a high-bandwidth mode; after receiving an acknowledgment signaling sent by the target terminal, sending an upgrade packet to the target terminal through the control channel in a high-bandwidth mode to enable the target terminal to upgrade, wherein the acknowledgment signaling is used to indicate that the terminal has switched from the service channel to the control channel.

[0009] Based on the above technical means, by switching the control channel from the conventional signaling mode to the high-bandwidth upgrade mode on the base station side, and using confirmation signaling to ensure that the terminal has been moved out of the service channel before sending the upgrade packet, the upgrade traffic is completely decoupled from the service channel. This not only releases the service channel resources so as not to affect the normal services of other terminals, but also breaks through the original narrowband rate bottleneck to achieve rapid upgrade.

[0010] Furthermore, the protocol data unit of the control signaling includes the OTA_flag field and the OTA_CHTYPE field. The OTA_flag field is used to indicate that the current control signaling is an air interface upgrade command, and the OTA_CHTYPE field is used to indicate the channel bandwidth and modulation method used for the upgrade.

[0011] Based on the above technical means, by adopting control signaling and setting the OTA_flag and OTA_CHTYPE fields in its protocol data unit, which are used to identify the air interface upgrade command and specify the channel bandwidth and modulation method used for the upgrade, the control signaling can accurately and efficiently carry the upgrade configuration parameters, ensuring that the parameter negotiation between the base station and the terminal in the upgrade mode is accurate and error-free, and improving the signaling reliability of the upgrade process.

[0012] Furthermore, after sending control signaling to the target terminal and before switching the control channel to upgrade mode, the method further includes: sending broadcast signaling to the entire network, wherein the broadcast signaling is used to notify all non-target terminals that the control channel is currently in upgrade mode.

[0013] Based on the aforementioned technical means, by sending a broadcast signaling message to the entire network after sending the target control signaling message and before switching the control channel, all non-target terminals are notified that the control channel is in upgrade mode. This enables non-target terminals to know the status of the control channel and stop sending unnecessary signaling interactions such as heartbeats, thus avoiding misuse and interference of the control channel by non-target terminals and ensuring the purity of the control channel and the stability of the upgrade process during the upgrade.

[0014] Furthermore, after the upgrade is completed, the method also includes: exiting the upgrade mode and restoring the control channel to the normal mode; receiving the updated version number carried by the target terminal when it re-registers.

[0015] Based on the aforementioned technical means, by actively exiting the upgrade mode after the upgrade is completed, restoring the control channel to the normal mode, and receiving the updated version number carried by the terminal during re-registration, the control channel can promptly revert to the normal signaling interaction state after the upgrade is completed. At the same time, the version number confirms the successful upgrade of the terminal, ensuring the consistency of the system's state and the traceability of subsequent management.

[0016] According to one aspect of the embodiments of this application, an air interface upgrade method is provided, applied to a terminal in a power wireless private network, comprising: receiving a control signaling sent by a base station, wherein the control signaling is used to notify the target terminal to be upgraded to enter an upgrade mode, and in the upgrade mode, the control channel is used to temporarily transmit upgrade packets in a high-bandwidth mode; switching from the current service channel to the control channel in response to the control signaling; sending an acknowledgment signaling to the base station, wherein the acknowledgment signaling is used to indicate that the terminal has switched from the service channel to the control channel; and receiving an upgrade packet sent by the base station through the control channel to perform the upgrade.

[0017] Based on the above technical means, by actively switching from the service channel to the control channel in response to the base station control signaling on the terminal side, and returning confirmation signaling to the base station to complete the handshake, and then receiving the upgrade packet in upgrade mode on the control channel, the terminal actively releases the service channel resources for other terminals to use, and completes the upgrade on the control channel side. This achieves zero interference to the services of other terminals during the upgrade process on the terminal side, and at the same time, the high bandwidth mode on the base station side ensures the upgrade rate.

[0018] Furthermore, the protocol data unit of the control signaling includes the OTA_flag field and the OTA_CHTYPE field. The OTA_flag field is used to indicate that the current control signaling is an air interface upgrade command, and the OTA_CHTYPE field is used to indicate the channel bandwidth and modulation method used for the upgrade.

[0019] Based on the above technical means, by identifying the OTA_flag and OTA_CHTYPE fields in the protocol data unit of the control signaling on the terminal side, the terminal can accurately determine that the current control signaling is an air interface upgrade command and know the channel bandwidth and modulation method used for the upgrade. This ensures the correct parsing of the base station upgrade command and the accurate configuration of radio frequency parameters on the terminal side, thereby improving the reliability of the terminal side upgrade process.

[0020] Furthermore, after the upgrade is completed, the method also includes: exiting the upgrade mode and restoring the control channel to the normal mode, wherein the normal mode is the normal working mode of the control channel used for signaling interaction; and re-registering the updated version number with the base station.

[0021] Based on the aforementioned technical means, by actively exiting the upgrade mode after the terminal upgrade is completed, restoring the control channel to the normal mode, and re-registering the updated version number with the base station, the terminal can autonomously restore to normal working status after the upgrade is completed. At the same time, the base station is informed of the upgrade result through version number reporting, ensuring the consistency of system versions and the accuracy of subsequent network management.

[0022] According to another aspect of the embodiments of this application, an air interface upgrade system is also provided, including: a base station in a power wireless private network and at least one terminal; The base station includes: a first transmitting module, used to send control signaling to the target terminal to be upgraded, wherein the control signaling is used to notify the target terminal to enter upgrade mode; a first switching module, used to switch the control channel from normal mode to upgrade mode, wherein in normal mode the control channel is used for signaling interaction, and in upgrade mode the control channel is used to temporarily use a high bandwidth mode to transmit upgrade packets; and a transmission module, used to send upgrade packets to the target terminal through the control channel after receiving confirmation signaling sent by the target terminal. The terminal includes: a receiving module for receiving control signaling sent by a base station; a second handover module for switching from the current service channel to the control channel in response to the control signaling; an acknowledgment module for sending an acknowledgment signaling to the base station, wherein the acknowledgment signaling indicates that the terminal has switched from the service channel to the control channel; and an upgrade module for receiving an upgrade package sent by the base station through the control channel and performing an upgrade.

[0023] According to another aspect of the embodiments of this application, an electronic device is also provided, including a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus; wherein the memory is used to store a computer program; and the processor is used to execute the air interface upgrade method in any of the above embodiments by running the computer program stored in the memory.

[0024] According to another aspect of the embodiments of this application, a computer-readable storage medium is also provided, wherein a computer program is stored therein, wherein the computer program is configured to execute the air interface upgrade method in any of the above embodiments when it is run.

[0025] The beneficial effects of this application are: This application switches the control channel from conventional signaling mode to high-bandwidth upgrade mode on the base station side, and uses confirmation signaling to ensure that the terminal has been moved out of the service channel before sending the upgrade packet. This completely decouples the upgrade traffic from the service channel, which not only releases the service channel resources so as not to affect the normal services of other terminals, but also breaks through the original narrowband rate bottleneck to achieve rapid upgrade. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a structural block diagram of an optional air interface upgrade system provided in an embodiment of this application; Figure 2 This is a flowchart illustrating an optional air interface upgrade method provided in an embodiment of this application; Figure 3 This is a flowchart illustrating another optional air interface upgrade method provided in an embodiment of this application; Figure 4 This is a structural block diagram of an optional electronic device provided in an embodiment of this application. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0030] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0031] According to one aspect of the embodiments of this application, an air interface upgrade system is provided. Optionally, in this embodiment, the air interface upgrade system may consist of a terminal (such as a user terminal device in a power grid wireless private network) and a base station (such as a base station device in a power grid wireless private network). The base station is connected to the terminal through a network and can be used to provide air interface upgrade services to the terminal. A database or upgrade server may be set up on the base station side or independently of the base station to store upgrade packages and related configuration data.

[0032] The aforementioned networks may include, but are not limited to, at least one of the following: wired networks and wireless networks. The aforementioned wired networks may include, but are not limited to, at least one of the following: wide area networks (WANs), metropolitan area networks (MANs), and local area networks (LANs). The aforementioned wireless networks may include, but are not limited to, at least one of the following: dedicated power wireless networks (such as the 230MHz dedicated power frequency band), WiFi (Wireless Fidelity), and Bluetooth. The terminals may not be limited to power data acquisition terminals, distribution network automation terminals, power metering terminals, PCs, mobile phones, tablets, etc.

[0033] Please see Figure 1 , Figure 1 This is a structural block diagram of an optional air interface upgrade system provided in an embodiment of this application, such as... Figure 1As shown, the air interface upgrade system includes: at least one terminal 101, one of which is a target terminal (a power wireless private network terminal device to be upgraded), and a base station 102 connected to the terminal via a network. The base station is used to send control signaling to the target terminal, switch the control channel to upgrade mode, and send upgrade packages to the target terminal through the control channel to execute the air interface upgrade method of this application for rapid upgrade of the terminal software; the target terminal is used to receive control signaling, switch from the service channel to the control channel, receive and execute the upgrade package, and complete the software upgrade.

[0034] In this embodiment, the base station 102 includes: a first transmitting module, configured to send control signaling to the target terminal to be upgraded, wherein the control signaling is used to notify the target terminal to enter upgrade mode; a first switching module, configured to switch the control channel from normal mode to upgrade mode, wherein in normal mode the control channel is used for signaling interaction, and in upgrade mode the control channel is used to temporarily use a high bandwidth mode to transmit upgrade packages; and a transmitting module, configured to send upgrade packages to the target terminal through the control channel after receiving confirmation signaling sent by the target terminal.

[0035] The terminal 101 includes: a receiving module for receiving control signaling sent by a base station; a second handover module for switching from the current service channel to the control channel in response to the control signaling; an acknowledgment module for sending an acknowledgment signaling to the base station, wherein the acknowledgment signaling indicates that the terminal has switched from the service channel to the control channel; and an upgrade module for receiving an upgrade package sent by the base station through the control channel and performing an upgrade.

[0036] The air interface upgrade method used in the air interface upgrade system of this embodiment can be applied to power wireless private network scenarios, such as: remote software upgrade of power data acquisition terminals, firmware update of distribution network automation terminals, communication module upgrade of power metering terminals, and batch or single-point air interface upgrades of other types of terminals in power wireless private networks. This embodiment uses the air interface software upgrade of terminal equipment in a power wireless private network as an example to illustrate the above-mentioned air interface upgrade method.

[0037] In practical applications of power wireless private networks, narrowband private network trunking communication technology is widely used. These systems typically support multiple carrier bandwidth configurations (e.g., 25kHz, 50kHz, 100kHz) and multiple modulation schemes (e.g., GMSK, 8PSK, 16QAM). To ensure the real-time and deterministic nature of terminal service scheduling, existing technologies introduce a "constant connection" mechanism, where the system assigns a fixed service time slot to each terminal within the service channel. When an air interface software upgrade is required for a terminal, the conventional approach is to directly transmit the upgrade data packet on the service channel allocated to that terminal, utilizing its bound service time slot. However, because the upgrade process shares service channel resources with regular services, the upgrade data packet can only be transmitted within the fixed service time slot, and the transmission rate is locked within the inherent narrowband modulation capability of the service channel, resulting in extremely long upgrade times (e.g., a 3MB upgrade packet takes 64 minutes to download in a single time slot at 25kHz 8PSK, and still takes 16 minutes even with 4 time slots bound). Simultaneously, the prolonged occupation of service time slots severely impacts the normal operations of other terminals. Therefore, how to overcome the narrowband rate limitation of the service channel and achieve rapid air interface upgrades of terminal software while ensuring that the normal services of other terminals are not affected has become a pressing technical problem in this field. The embodiments of this application are proposed precisely to solve the above-mentioned technical problem.

[0038] To address the aforementioned issues, this embodiment provides an air interface upgrade method for base stations operating in the aforementioned power wireless private network. Please refer to [link to relevant documentation]. Figure 2 , Figure 2 This is a flowchart illustrating an optional air interface upgrade method provided in an embodiment of this application, such as... Figure 2 As shown, the air interface upgrade method of this application embodiment specifically includes the following steps: Step S201: Send control signaling to the target terminal to be upgraded, wherein the control signaling is used to notify the target terminal to enter upgrade mode; Step S202: Switch the control channel from normal mode to upgrade mode. In normal mode, the control channel is used for signaling interaction. In upgrade mode, the control channel is used to temporarily transmit upgrade packets using a high bandwidth mode. Step S203: After receiving the confirmation signaling sent by the target terminal, an upgrade packet is sent to the target terminal through the control channel in high bandwidth mode to upgrade the target terminal. The confirmation signaling is used to indicate that the terminal has switched from the service channel to the control channel.

[0039] Through steps S201 to S203, by switching the control channel from the conventional signaling mode to the high-bandwidth upgrade mode on the base station side, and using confirmation signaling to ensure that the terminal has been moved out of the service channel before sending the upgrade packet, the upgrade traffic is completely decoupled from the service channel. This not only releases the service channel resources so as not to affect the normal services of other terminals, but also breaks through the original narrowband rate bottleneck to achieve rapid upgrade.

[0040] The following is combined with Figure 2 The air interface upgrade method in the embodiments of this application will be explained.

[0041] In the technical solution of step S201, control signaling is sent to the target terminal to be upgraded.

[0042] In this embodiment, the base station first sends control signaling to the target terminal to be upgraded. This control signaling is used to notify the target terminal to enter upgrade mode. This control signaling is a signaling system for control information exchange between the base station and the terminal. Its specific implementation can be a CSBK signaling frame (Control Signalling Block) or other equivalent control signaling frame structures.

[0043] As an optional implementation, the above control signaling can be specifically implemented using PC_AHOY signaling. PC_AHOY signaling is a dedicated control signaling used by the base station to send an upgrade notification to the terminal. Its function is to inform the target terminal that the base station is preparing to upgrade its air interface and that the target terminal should prepare for the upgrade.

[0044] More specifically, the PC_AHOY signaling is a type of CSBK signaling frame, and the contents of its Protocol Data Unit (PDU) are shown in Table 1: Table 1. PDU Contents of PC_AHOY Signaling

[0045] The LB (Last Block) field, with a value of 1, indicates that the current signaling is a CSBK signaling frame. The PF (Protect Flag) field indicates whether the current signaling is transmitted in plaintext or ciphertext; a value of 0 indicates plaintext transmission, and a value of 1 indicates ciphertext transmission. The CSBKO (Control Signalling Block Opcode) field is the control signaling command code, used to identify the control type of the current signaling. The SO (Service Option) and SK (Service Kind) fields indicate the service option and service type, respectively.

[0046] The OTA_flag (Over-The-Air flag) field is a key field in the PC_AHOY signaling used to identify the type of upgrade command. A value of 0 indicates a non-over-the-air upgrade command, while a value of 1 indicates an over-the-air upgrade command. The OTA_CHTYPE (Over-The-Air Channel Type) field indicates the channel bandwidth and modulation scheme used for the upgrade. A value of 0 indicates that the OTA upgrade uses 100K 8PSK mode, while a value of 1 indicates that the OTA upgrade uses 100K 16QAM mode.

[0047] The SADDR (Source Address) field is the source address, i.e., the address of the base station that sent the signaling. The TADDR (Target Address) field is the destination address, i.e., the address of the target terminal that received the signaling.

[0048] It should be noted that this embodiment uses PC_AHOY signaling as a specific implementation example of control signaling. Other equivalent control signaling frame structures can also be used in other embodiments, as long as they can achieve the function of notifying the target terminal to enter the upgrade mode and indicating the channel bandwidth and modulation method used for the upgrade. This application does not impose any specific restrictions on this.

[0049] This embodiment uses a 100kHz bandwidth, 8PSK, and 16QAM modulation scheme as an example for illustration, but this application is not limited to this. In practical applications, the base station can be configured with other bandwidths (such as 50kHz) and modulation schemes (such as GMSK) according to the radio frequency capabilities of the terminal equipment, in order to adapt to the hardware capabilities and application scenario requirements of different terminals.

[0050] Based on the above technical means, by adopting control signaling (such as PC_AHOY signaling) and setting the OTA_flag field and OTA_CHTYPE field in its protocol data unit, which are used to identify the air interface upgrade command and specify the channel bandwidth and modulation method used for the upgrade, the control signaling can carry upgrade configuration parameters accurately and efficiently, ensuring that the parameter negotiation between the base station and the terminal in the upgrade mode is accurate and error-free, and improving the signaling reliability of the upgrade process.

[0051] Furthermore, after step S201, a two-way authentication process is performed between the base station and the target terminal. Specifically, after receiving the PC_AHOY control signaling, the target terminal initiates a two-way authentication process with the base station to ensure the legitimacy of the upgrade source and the authenticity of the terminal's identity, thus guaranteeing the security of the upgrade process. The purpose of this authentication process is to prevent illegal malicious upgrade requests and ensure the communication security of the power grid wireless private network. It should be noted that authentication is an optional implementation method of this application, and in practical applications, it can be selected to be implemented or omitted according to security requirements. This application does not impose specific restrictions on this. The specific authentication protocol and algorithm can adopt any two-way authentication mechanism known in the art, and this application will not elaborate further.

[0052] In the technical solution of step S202, the control channel is switched from the normal mode to the upgrade mode.

[0053] In this embodiment, after completing step S201 (and optional bidirectional authentication), the base station switches the control channel from normal mode to upgrade mode. To facilitate understanding of the technical content of this step, the two operating modes of the control channel are first explained: In normal mode, the control channel is used to carry signaling interactions between the base station and the terminal, such as the transmission of control signaling for terminal network registration, heartbeat maintenance, paging response, etc. In this case, the control channel operates in normal narrowband mode (e.g., 25kHz bandwidth).

[0054] In upgrade mode, the control channel is used to temporarily transmit upgrade packets using a high-bandwidth mode. At this time, the control channel is temporarily configured with a higher channel bandwidth (e.g., 100kHz) and a more efficient modulation scheme (e.g., 8PSK or 16QAM) to improve the data transmission rate and meet the high-speed delivery requirements of the upgrade packets.

[0055] In the practical application of this embodiment, the specific operation of step S202 is as follows: the base station switches the control channel from the conventional narrowband signaling mode to the upgrade mode. In the upgrade mode, the control channel is configured as a large bandwidth mode, such as 100kHz bandwidth with 8PSK or 16QAM modulation. At this time, the net throughput of the control channel can reach more than 120kbps.

[0056] As an optional implementation, after step S201 (sending control signaling to the target terminal) and before step S202 (switching the control channel to upgrade mode), the base station may also send broadcast signaling to the entire network. The purpose of this broadcast signaling is to notify all non-target terminals (i.e., terminals other than the target terminal to be upgraded) that the control channel is currently in upgrade mode.

[0057] This broadcast signaling can be implemented using PC_BCAST signaling. PC_BCAST signaling is a broadcast type of control signaling, its function is to broadcast the status information of the control channel to all terminals in the network. PC_BCAST signaling is also a CSBK signaling frame, and the contents of its Protocol Data Unit (PDU) are shown in Table 2: Table 2. PDU Contents of PC_BCAST Signaling

[0058] In this context, the LB field, when set to 1, indicates that the current signaling is a CSBK signaling frame. The PF field indicates whether the signal is sent in plaintext or ciphertext. The CSBKO field is the control signaling command code. The ATYPE field indicates that the target type for this air interface upgrade is a terminal.

[0059] The I / G (Individual / Group, Unicast / Multicast) field is a key field in the PC_BCAST signaling used to indicate the upgrade scope. When its value is 0, it indicates that the target group is being upgraded (i.e., multicast mode), and when its value is 1, it indicates that the individual target is being upgraded (i.e., unicast mode).

[0060] The OTA_Enter_Flag (Over-The-Air Enter Flag) field is a key field in the PC_BCAST signaling used to indicate the status of the control channel. A value of 0 indicates that the control channel is in normal mode, and a value of 1 indicates that the control channel is in upgrade mode.

[0061] The SADDR field is the source address, which is the address of the base station sending the broadcast signaling. The TADDR field is the destination address; when it takes a value of 0x1FFF, it indicates a broadcast address, meaning the signaling is sent to all terminals in the network.

[0062] Upon receiving the PC_BCAST broadcast signaling, each non-target terminal learns that the control channel is currently in upgrade mode by parsing the OTA_Enter_Flag field. Thereafter, these non-target terminals cease sending heartbeats to the base station to avoid unnecessary signaling interactions with the control channel during the upgrade process, until the control channel exits upgrade mode and returns to normal mode.

[0063] During the upgrade mode of the control channel, since non-target terminals have stopped sending heartbeats, in order to prevent these terminals from being judged as offline by the network, the base station and each terminal maintain a keep-alive state through replacement frames (i.e., fixed link keep-alive interaction protocol).

[0064] In this step, if the control channel mode is switched before the broadcast signaling is sent, non-target terminals may not be able to receive the broadcast signaling correctly because the control channel mode has changed, thus making them unaware of the change in control channel status. Therefore, broadcasting the notification using the existing mode before switching ensures that all non-target terminals can reliably receive the status notification.

[0065] Based on the aforementioned technical means, by sending a broadcast signaling message to the entire network after sending the target control signaling message and before switching the control channel, all non-target terminals are notified that the control channel is in upgrade mode. This enables non-target terminals to know the status of the control channel and stop sending unnecessary signaling interactions such as heartbeats, thus avoiding misuse and interference of the control channel by non-target terminals and ensuring the purity of the control channel and the stability of the upgrade process during the upgrade.

[0066] In the technical solution of step S203, after receiving the confirmation signaling sent by the target terminal, an upgrade packet is sent to the target terminal through the control channel in a high-bandwidth mode to enable the target terminal to upgrade. The confirmation signaling is used to indicate that the terminal has switched from the service channel to the control channel.

[0067] In this embodiment, after completing step S202 (switching the control channel to upgrade mode), the base station waits for a response from the target terminal. Upon receiving the PC_AHOY control signaling sent in step S201, the target terminal responds by switching from its current service channel to the control channel and configuring its own radio frequency parameters according to the channel bandwidth (e.g., 100kHz) and modulation scheme (e.g., 8PSK or 16QAM) indicated by the OTA_CHTYPE field in the control signaling.

[0068] After the target terminal completes the handover from the service channel to the control channel and configures the radio frequency parameters, it sends an acknowledgment signal to the base station. The purpose of this acknowledgment signal is to inform the base station that the terminal is ready and can begin receiving upgrade packets.

[0069] This confirmation signaling can be implemented using PC_ACK signaling. PC_ACK signaling is the confirmation signaling from the terminal to the base station regarding the handover result. Conversely, if the handover fails or times out, the terminal uses PC_NACK signaling to notify the base station. Both PC_ACK and PC_NACK signaling are CSBK signaling frames, and their Protocol Data Units (PDUs) are shown in Table 3. Table 3. PDU Contents of PC_ACK / PC_NACK Signaling

[0070] In this system, the LB field has a value of 1, indicating that the current signaling is a CSBK signaling frame. The PF field indicates whether the signaling is sent in plaintext or ciphertext. The CSBKO field is the control signaling command code. The ARC (Acknowledge Result Code) field is a key field in the acknowledgment signaling, used to indicate the result of the terminal's channel switching; specifically, the ARC field indicates whether the channel switching was successful or failed. The SADDR field is the source address, i.e., the address of the target terminal sending the acknowledgment signaling. The TADDR field is the destination address, i.e., the address of the base station receiving the acknowledgment signaling.

[0071] After receiving the PC_ACK acknowledgment signal from the target terminal, the base station confirms that the target terminal has completed the handover from the service channel to the control channel and has completed the radio frequency parameter configuration. Subsequently, the base station sends an upgrade package to the target terminal through the control channel in a high-bandwidth mode.

[0072] In this embodiment, the base station removes the target terminal to be upgraded from the service channel and transfers it to the control channel, setting the control channel to a high-bandwidth mode (e.g., 100K 8PSK or 100K 16QAM), where the net throughput exceeds 120kbps. Since the upgrade is performed on the control channel, all time slots of the control channel (e.g., four time slots) can be allocated to the terminal to be upgraded for upgrade packet delivery, without affecting the normal services of other terminals.

[0073] Taking a 3MB upgrade package as an example, under the existing 25kHz 8PSK service channel, the net rate per timeslot is approximately 25kbps. Using four timeslots for air interface upgrade, the transmission time is approximately 16 minutes. However, using the technical solution of this embodiment, the terminal is switched to the control channel, which adopts a 100K 8PSK high-bandwidth mode with a net throughput of over 120kbps. All four timeslots are allocated to the target terminal, and the transmission time for the 3MB upgrade package is approximately 3 minutes and 25 seconds, significantly shortening the upgrade package transmission time.

[0074] In this embodiment, the signaling frame used by the base station to send the upgrade package is described using the CSBK signaling frame as an example. Other equivalent frame structures are within the protection scope of this application.

[0075] As an optional implementation, if the base station does not receive the PC_ACK confirmation signaling from the target terminal within the predetermined time, but instead receives the PC_NACK signaling, or the wait times out, then the upgrade handover is confirmed to have failed. In this case, the base station can take any of the following actions: Action 1: The base station exits the upgrade mode, restores the control channel to normal mode, and notifies all terminals in the network that it has exited the upgrade mode via broadcast signaling (PC_BCAST); Action 2: The base station resends the control signaling (PC_AHOY) to the target terminal, repeating the above upgrade process. The number of retransmissions is configurable (e.g., 3 times by default).

[0076] Understandably, during the process of the base station sending the upgrade package to the target terminal, if data packet loss or verification errors occur, the base station has a retransmission mechanism through Method 2. Specifically, after receiving the upgrade package, the target terminal verifies it. If the verification fails, it requests a retransmission from the base station; the base station responds to this request and retransmits the corresponding upgrade package data. The number of retransmissions is configurable, with a default of 3 retransmissions. If the maximum number of retransmissions is exceeded, the upgrade is deemed to have failed, the base station exits the upgrade mode, and restores the control channel to normal mode.

[0077] As an optional implementation, after the upgrade is completed, the method on the base station side also includes the following follow-up steps: exiting the upgrade mode and restoring the control channel to the normal mode; receiving the updated version number carried by the target terminal when it re-registers.

[0078] Specifically, after the target terminal receives the upgrade package and completes the upgrade, the upgrade process on the terminal side is complete. At this point, both the base station and the target terminal exit the upgrade mode of the control channel and switch the control channel back from the high-bandwidth mode to the normal mode, that is, restore it to the normal working mode used for signaling interaction (e.g., restore it to the 25kHz normal narrowband mode). Afterwards, the target terminal re-initiates network registration, carrying the updated version number during registration. The base station receives this version number and confirms that the terminal upgrade was successful.

[0079] Based on the aforementioned technical means, by actively exiting the upgrade mode after the upgrade is completed, restoring the control channel to the normal mode, and receiving the updated version number carried by the terminal during re-registration, the control channel can promptly revert to the normal signaling interaction state after the upgrade is completed. At the same time, the version number confirms the successful upgrade of the terminal, ensuring the consistency of the system's state and the traceability of subsequent management.

[0080] To address the aforementioned issues, this embodiment provides an air interface upgrade method for terminals operating in the aforementioned power wireless private network. Please refer to [link to relevant documentation]. Figure 3 , Figure 3 This is a flowchart illustrating another optional air interface upgrade method provided in an embodiment of this application, such as... Figure 3 As shown, the air interface upgrade method of this application embodiment specifically includes the following steps: Step S301: Receive control signaling sent by the base station, wherein the control signaling is used to notify the target terminal to be upgraded to enter the upgrade mode, and in the upgrade mode, the control channel is used to temporarily use a large bandwidth mode to transmit the upgrade packet. Step S302: In response to control signaling, switch from the current service channel to the control channel; Step S303: Send an acknowledgment signaling to the base station, wherein the acknowledgment signaling is used to indicate that the terminal has switched from the service channel to the control channel; Step S304: Receive the upgrade package sent by the base station through the control channel and perform the upgrade.

[0081] Through steps S301 to S304 above, by switching the control channel from the conventional signaling mode to the high-bandwidth upgrade mode on the base station side, and using confirmation signaling to ensure that the terminal has been moved out of the service channel before sending the upgrade packet, the upgrade traffic is completely decoupled from the service channel. This not only releases service channel resources so as not to affect the normal services of other terminals, but also breaks through the original narrowband rate bottleneck to achieve rapid upgrade.

[0082] The following is combined with Figure 3 The air interface upgrade method in the embodiments of this application will be explained.

[0083] In the technical solution of step S301, control signaling sent by the base station is received.

[0084] In this embodiment, the target terminal first receives control signaling sent by the base station. This control signaling is the same as the control signaling sent by the base station in step S201, and its function is to notify the target terminal to be upgraded to enter upgrade mode and indicate the channel bandwidth and modulation scheme used for the upgrade.

[0085] This control signaling can be implemented using PC_AHOY signaling. PC_AHOY signaling is a dedicated control signaling used by a base station to send an upgrade notification to a terminal. By receiving and parsing this signaling, the target terminal learns that it has been selected as the target terminal to be upgraded and obtains the configuration information of the channel bandwidth and modulation scheme used for the upgrade. The contents of the Protocol Data Unit (PDU) of PC_AHOY signaling are shown in Table 1 above.

[0086] After receiving the PC_AHOY control signaling, the target terminal parses its protocol data unit to obtain information from the OTA_flag and OTA_CHTYPE fields. Specifically: The target terminal parses the OTA_flag field. When the value of this field is 1, the target terminal confirms that the current control signaling is an air interface upgrade command, rather than other types of control commands.

[0087] The target terminal parses the OTA_CHTYPE field. When the field value is 0, it indicates that the upgrade uses 100K 8PSK mode; when the field value is 1, it indicates that the upgrade uses 100K 16QAM mode. Based on the indication of this field, the target terminal determines the channel bandwidth and modulation scheme used for the upgrade, preparing for subsequent channel switching and RF parameter configuration.

[0088] Based on the above technical means, by identifying the OTA_flag and OTA_CHTYPE fields in the protocol data unit of the control signaling (such as PC_AHOY signaling) on ​​the terminal side, the terminal can accurately determine that the current control signaling is an air interface upgrade command and know the channel bandwidth and modulation method used for the upgrade. This ensures the correct parsing of the base station upgrade command and the accurate configuration of radio frequency parameters on the terminal side, and improves the reliability of the terminal side upgrade process.

[0089] Furthermore, after receiving the PC_AHOY control signaling, the target terminal also performs two-way authentication with the base station to ensure the legitimacy of the upgrade source and the authenticity of the terminal's identity.

[0090] In the technical solution of step S302, in response to control signaling, the current service channel is switched to the control channel.

[0091] In this embodiment, after completing step S301 (receiving control signaling) and optional bidirectional authentication, the target terminal switches from its current service channel to the control channel in response to the control signaling sent by the base station. Simultaneously, the target terminal configures its own radio frequency parameters according to the channel bandwidth (e.g., 100kHz) and modulation scheme (e.g., 8PSK or 16QAM) specified by the OTA_CHTYPE field in the control signaling, preparing to receive upgrade packets on the control channel.

[0092] In this step, the service channel currently occupied by the target terminal is used to carry routine service data, such as power data acquisition and reporting, and distribution network automation control commands. When the target terminal switches from the service channel to the control channel, the service channel is released and is no longer occupied by the upgrade process, thus allowing other terminals to use the service channel resource normally for service communication.

[0093] As an optional implementation, before the target terminal switches to the control channel, the base station has sent a broadcast signaling (PC_BCAST) to the entire network, notifying all non-target terminals that the control channel is currently in upgrade mode. The PDU content of this broadcast signaling is shown in Table 2 above. As the terminal to be upgraded, the target terminal performs the switching operation from the service channel to the control channel according to the instructions of the PC_AHOY control signaling received in step S201.

[0094] In the technical solution of step S303, an acknowledgment signaling is sent to the base station, wherein the acknowledgment signaling is used to indicate that the terminal has switched from the service channel to the control channel.

[0095] In this embodiment, after completing step S302 (switching from the service channel to the control channel and configuring the radio frequency parameters according to the channel bandwidth and modulation scheme specified by the control signaling), the target terminal sends an acknowledgment signaling to the base station. The purpose of this acknowledgment signaling is to notify the base station that the target terminal has successfully switched from the service channel to the control channel and has completed the radio frequency parameter configuration, and can begin receiving upgrade packets.

[0096] This confirmation signaling can be implemented using PC_ACK signaling. PC_ACK signaling is a confirmation signaling that the terminal sends a feedback message of the handover result to the base station; its Protocol Data Unit (PDU) content is shown in Table 3 above. The target terminal sends feedback of the channel handover result to the base station by setting the ARC field in the Protocol Data Unit of the PC_ACK signaling. Specifically: When the ARC field indicates that the upgrade and channel switching was successful, it means that the target terminal has successfully switched to the control channel, and the base station can begin to send upgrade packages.

[0097] When the ARC field indicates that the channel upgrade failed, it means that the handover has failed. If the handover fails or times out, the target terminal sends a PC_NACK signaling message to notify the base station on the traffic channel.

[0098] Based on the above technical means, by sending an acknowledgment signaling containing the ARC field (such as PC_ACK signaling) from the terminal to the base station, the base station can promptly know the channel switching status of the terminal, ensuring that the terminal is in the correct channel and radio frequency configuration state when the upgrade package is sent, thereby improving the reliability and interaction integrity of the upgrade process.

[0099] In the technical solution of step S304, the upgrade package sent by the base station is received through the control channel to perform the upgrade.

[0100] In this embodiment, after completing step S303 (sending an acknowledgment signal to the base station), the target terminal receives the upgrade packet sent by the base station through the control channel. The base station switches the control channel to a high-bandwidth mode (e.g., 100K 8PSK or 100K 16QAM) and sends the upgrade packet to the target terminal using all time slots of the control channel. The target terminal receives the upgrade packet on the control channel with the corresponding channel bandwidth and modulation scheme and performs the upgrade.

[0101] In this embodiment, the base station operates in high-bandwidth mode on the control channel, achieving a net throughput of over 120kbps. The target terminal receives the upgrade packet at this rate, significantly reducing the upgrade packet reception time. For example, a 3MB upgrade packet takes approximately 3 minutes and 25 seconds to transmit, a substantial improvement in upgrade efficiency compared to the 16 to 64 minutes of existing technologies.

[0102] Since the target terminal has switched from the service channel to the control channel, the service channel resources are completely released during the upgrade packet reception process, and other terminals can carry out service communication normally without being affected by the upgrade process.

[0103] As an optional implementation, after the upgrade is completed, the terminal-side method also includes the following follow-up steps: exiting the upgrade mode and restoring the control channel to the normal mode, wherein the normal mode is the normal working mode of the control channel used for signaling interaction; and re-registering the updated version number with the base station.

[0104] Specifically, after receiving the complete upgrade package and completing the upgrade, the target terminal exits the upgrade mode and restores the control channel from the high-bandwidth mode to the normal mode, that is, restores it to the normal working mode used for signaling interaction (e.g., restores it to the 25kHz normal narrowband mode). The target terminal then re-initiates network registration with the base station, carrying the updated version number during registration, to report the result of this upgrade to the base station, thus completing the closed loop of the entire upgrade process.

[0105] Based on the aforementioned technical means, by actively exiting the upgrade mode after the terminal upgrade is completed, restoring the control channel to the normal mode, and re-registering the updated version number with the base station, the terminal can autonomously restore to normal working status after the upgrade is completed. At the same time, the base station is informed of the upgrade result through version number reporting, ensuring the consistency of system versions and the accuracy of subsequent network management.

[0106] It should be noted that this application describes the upgrade of a single terminal as an example, but the technical solution of this application theoretically also supports the simultaneous upgrade of a group of terminals (i.e., group upgrade). However, in the practical application of power wireless private networks, considering that group upgrades may cause a large number of terminals to be in the upgrade state at the same time and unable to provide service, resulting in the risk of large-scale service failure, the method of upgrading each terminal individually is usually adopted in actual engineering. The scope of protection of this application is not limited to single terminal upgrades; applications in group upgrade scenarios also fall within the scope of protection of this application.

[0107] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to this application. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0108] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods according to the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM (Read-Only Memory) / RAM (Random Access Memory), magnetic disk, optical disk), and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods of the various embodiments of this application.

[0109] According to another aspect of the embodiments of this application, an electronic device for implementing the above-described air interface upgrade method is also provided. The electronic device may be a server, a terminal, or a combination thereof.

[0110] According to another embodiment of this application, an electronic device is also provided; please refer to [link to relevant documentation]. Figure 4 , Figure 4 This is a structural block diagram of an optional electronic device provided in an embodiment of this application, such as... Figure 4 As shown, the electronic device may include: a processor 1501, a communication interface 1502, a memory 1503, and a communication bus 1504, wherein the processor 1501, the communication interface 1502, and the memory 1503 communicate with each other through the communication bus 1504.

[0111] Memory 1503 is used to store computer programs; When processor 1501 executes the program stored in memory 1503, it performs the following steps: Step S201: Send control signaling to the target terminal to be upgraded, wherein the control signaling is used to notify the target terminal to enter upgrade mode; Step S202: Switch the control channel from normal mode to upgrade mode. In normal mode, the control channel is used for signaling interaction. In upgrade mode, the control channel is used to temporarily transmit upgrade packets using a high bandwidth mode. Step S203: After receiving the confirmation signaling sent by the target terminal, an upgrade packet is sent to the target terminal through the control channel in high bandwidth mode to upgrade the target terminal. The confirmation signaling is used to indicate that the terminal has switched from the service channel to the control channel.

[0112] It is understood that the technical solution provided in this embodiment, the processor of the electronic device, switches the control channel from the conventional signaling mode to the high-bandwidth upgrade mode on the base station side, and uses confirmation signaling to ensure that the terminal has been moved out of the service channel before sending the upgrade package, so that the upgrade traffic is completely decoupled from the service channel. This not only releases the service channel resources so as not to affect the normal services of other terminals, but also breaks through the original narrowband rate bottleneck to achieve rapid upgrade.

[0113] As an optional embodiment, when the processor 1501 executes the program stored in the memory 1503, it further performs the following steps: Step S301: Receive control signaling sent by the base station, wherein the control signaling is used to notify the target terminal to be upgraded to enter the upgrade mode, and in the upgrade mode, the control channel is used to temporarily use a large bandwidth mode to transmit the upgrade packet. Step S302: In response to control signaling, switch from the current service channel to the control channel; Step S303: Send an acknowledgment signaling to the base station, wherein the acknowledgment signaling is used to indicate that the terminal has switched from the service channel to the control channel; Step S304: Receive the upgrade package sent by the base station through the control channel and perform the upgrade.

[0114] It is understood that the technical solution provided in this embodiment, the processor of the electronic device, switches the control channel from the conventional signaling mode to the high-bandwidth upgrade mode on the base station side, and uses confirmation signaling to ensure that the terminal has been moved out of the service channel before sending the upgrade package, so that the upgrade traffic is completely decoupled from the service channel. This not only releases the service channel resources so as not to affect the normal services of other terminals, but also breaks through the original narrowband rate bottleneck to achieve rapid upgrade.

[0115] Optionally, in this embodiment, the communication bus can be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. This communication bus can be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is used to represent it in the figure, but this does not mean that there is only one bus or one type of bus. The communication interface is used for communication between the aforementioned electronic device and other devices.

[0116] The memory may include random access memory (RAM) or non-volatile memory (NVM), such as at least one disk storage device. Optionally, the memory may also be at least one storage system located remotely from the aforementioned processor.

[0117] The processor mentioned above can be a general-purpose processor, including but not limited to: CPU (Central Processing Unit), NP (Network Processor), etc.; it can also be DSP (Digital Signal Processor), ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

[0118] This application also provides a computer-readable storage medium, which includes a stored program, wherein the program executes the method steps of the above method embodiments when it runs.

[0119] Optionally, in this embodiment, the storage medium may include, but is not limited to, various media capable of storing program code, such as USB flash drives, ROMs, RAMs, portable hard drives, magnetic disks, or optical disks.

[0120] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0121] If the integrated units in the above embodiments are implemented as software functional units and sold or used as independent products, they can be stored in the aforementioned computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause one or more computer devices (which may be personal computers, servers, or network devices, etc.) to execute all or part of the steps of the methods of the various embodiments of this application.

[0122] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0123] In the several embodiments provided in this application, it should be understood that the disclosed client can be implemented in other ways. The system embodiments described above are merely illustrative; for example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, or indirect coupling or communication connection between units or modules, and may be electrical or other forms.

[0124] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of the solution provided in this embodiment, depending on actual needs.

[0125] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0126] The above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. An air interface upgrade method, applied to a base station in a power grid wireless private network, characterized in that, include: Send control signaling to the target terminal to be upgraded, wherein the control signaling is used to notify the target terminal to enter upgrade mode; The control channel is switched from the normal mode to the upgrade mode, wherein the control channel is used for signaling interaction in the normal mode, and the control channel is used to temporarily transmit upgrade packets using a high bandwidth mode in the upgrade mode. After receiving the confirmation signaling sent by the target terminal, an upgrade packet is sent to the target terminal through the control channel in high bandwidth mode to upgrade the target terminal. The confirmation signaling is used to indicate that the terminal has switched from the service channel to the control channel.

2. The air interface upgrade method according to claim 1, characterized in that, The protocol data unit of the control signaling includes an OTA_flag field and an OTA_CHTYPE field. The OTA_flag field is used to indicate that the current control signaling is an air interface upgrade command, and the OTA_CHTYPE field is used to indicate the channel bandwidth and modulation method used for the upgrade.

3. The air interface upgrade method according to claim 1, characterized in that, After sending control signaling to the target terminal, and before switching the control channel to the upgrade mode, the method further includes: A broadcast signaling message is sent to the entire network, wherein the broadcast signaling message is used to notify all non-target terminals that the control channel is currently in the upgrade mode.

4. The air interface upgrade method according to claim 1, characterized in that, After the upgrade is completed, the method also includes: Exit the upgrade mode and restore the control channel to normal mode; Receive the updated version number carried by the target terminal when it re-registers.

5. An air interface upgrade method, applied to a terminal in a power wireless private network, characterized in that, include: The system receives control signaling sent by the base station, wherein the control signaling is used to notify the target terminal to be upgraded to enter the upgrade mode, and in the upgrade mode, the control channel is used to temporarily use a high bandwidth mode to transmit upgrade packets. In response to the control signaling, switch from the current service channel to the control channel; Send an acknowledgment signaling to the base station, wherein the acknowledgment signaling is used to indicate that the terminal has switched from the service channel to the control channel; The upgrade is performed by receiving the upgrade package sent by the base station through the control channel.

6. The air interface upgrade method according to claim 5, characterized in that, The protocol data unit of the control signaling includes an OTA_flag field and an OTA_CHTYPE field. The OTA_flag field is used to indicate that the current control signaling is an air interface upgrade command, and the OTA_CHTYPE field is used to indicate the channel bandwidth and modulation method used for the upgrade.

7. The air interface upgrade method according to claim 5, characterized in that, After the upgrade is completed, the method also includes: Exit the upgrade mode and restore the control channel to the normal mode, wherein the normal mode is the normal working mode of the control channel for signaling interaction; The updated version number is re-registered with the base station.

8. An air interface upgrade system, characterized in that, include: A base station and at least one terminal in a power wireless private network; The base station includes: The first sending module is used to send control signaling to the target terminal to be upgraded, wherein the control signaling is used to notify the target terminal to enter the upgrade mode; The first switching module is used to switch the control channel from the normal mode to the upgrade mode, wherein the control channel is used for signaling interaction in the normal mode, and the control channel is used to temporarily transmit upgrade packets in a high-bandwidth mode in the upgrade mode. The transmission module is used to send an upgrade package to the target terminal through the control channel after receiving the confirmation signaling sent by the target terminal; The terminal includes: A receiving module is used to receive the control signaling sent by the base station; The second switching module is used to switch from the current service channel to the control channel in response to the control signaling; The confirmation module is used to send the confirmation signaling to the base station, wherein the confirmation signaling is used to indicate that the terminal has switched from the service channel to the control channel; The upgrade module is used to receive the upgrade package sent by the base station through the control channel and perform the upgrade.

9. An electronic device comprising a processor, a communication interface, a memory, and a communication bus, wherein, The processor, the communication interface, and the memory communicate with each other via the communication bus, characterized in that... The memory is used to store computer programs; The processor is configured to execute the air interface upgrade method of any one of claims 1 to 4 applied to a base station in a power wireless private network by running the computer program stored in the memory, or to execute the air interface upgrade method of any one of claims 5 to 7 applied to a terminal in a power wireless private network by running the computer program stored in the memory.

10. A computer-readable storage medium, characterized in that, The storage medium stores a computer program, wherein the computer program is configured to execute, at runtime, the air interface upgrade method of any one of claims 1 to 4 applied to a base station in a power wireless private network, or the computer program is configured to execute, at runtime, the air interface upgrade method of any one of claims 5 to 7 applied to a terminal in a power wireless private network.

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