Wireless communication control method based on load shedding service

Abstract

The invention provides a wireless communication control method based on a load shedding service, which belongs to the technical field of power control systems and comprises the following steps of: segmenting a load shedding service instruction into data unit packets capable of being transmitted in parallel according to a preset data unit packet length threshold range; dynamically distributing discrete carrier frequency bands for the data unit packet to carry out multi-carrier parallel transmission; scanning a target frequency band to select a subcarrier combination, and dynamically allocating a discrete carrier frequency band for the data unit packet; the terminal randomly accesses on the multi-carrier frequency service channel and uploads data in parallel at the same time; and performing joint recombination on the multi-carrier discrete spectrum data at a receiving end, and recovering an original service instruction. The method has the advantages that discrete frequency band resources are efficiently integrated by combining dynamic carrier allocation with real-time channel scanning. The problem of communication congestion in a terminal dense area is relieved, and frequency spectrum idling in a low-service-density area is also avoided. The multi-carrier parallel transmission is beneficial to improving the spectrum utilization rate, and provides support for massive terminal access in a new energy high-permeability scene.

Description

Technical Field

[0001] The present invention belongs to the technical field of power control systems, and in particular relates to a wireless communication control method based on load shedding services. Background Art

[0002] In the field of power system control, the real-time and reliability of load shedding services are crucial to grid security. Traditional wireless communication solutions mainly rely on single-carrier narrowband transmission technology, which is prone to communication congestion in areas with dense terminal density and cannot meet the needs of massive terminal concurrent access in scenarios with high penetration of new energy. Existing technologies lack a refined processing mechanism for service priority, resulting in emergency load shedding instructions competing with ordinary monitoring data for channel resources, and the transmission delay of key instructions is uncontrollable. In addition, the fixed-length packet segmentation strategy cannot adapt to service diversity. Excessive fragmentation of large-capacity instructions increases reassembly overhead, while the frequent transmission of small data packets increases protocol overhead, resulting in low spectrum resource utilization. Summary of the Invention

[0003] In view of this, the present invention addresses the deficiencies in the prior art and provides a wireless communication control method based on load shedding service. To solve the above technical problems, the present invention adopts the following technical solutions: including: establishing a dedicated network communication link supporting a multi-carrier transmission channel for the service in the target frequency band; dynamically adjusting the packet length threshold according to the service priority; dividing the load shedding service instruction into data unit packets that can be transmitted in parallel according to a preset data unit packet length threshold range, adding a service type identifier and a sequence number to the packet header, and carrying the instruction data and verification information of the data unit packet in the packet body; dynamically allocating discrete carrier frequency bands to the data unit packets for multi-carrier parallel transmission; calculating the required number of carriers based on the terminal distribution density and the service priority, scanning the target frequency band to select a subcarrier combination, and dynamically allocating discrete carrier frequency bands to the data unit packets; the terminal randomly accesses and uploads data in parallel on the multi-carrier service channel at the same time; allocating continuous reserved time slot resources to the designated terminal to build an exclusive extended data transmission channel; jointly reorganizing the multi-carrier discrete spectrum data at the receiving end, verifying the data integrity through the error correction mechanism, and restoring the original service instruction.

[0004] Furthermore, the private network communication link includes:

[0005] The PDT core network, used for core control, deploys quantum encryption modules to achieve dual authentication of signaling;

[0006] PDT data transmission base station, used for edge access, with integrated service perception unit to monitor channel quality in real time;

[0007] The terminal is used to execute the transmission of data unit packets, and the built-in communication chip supports multi-carrier communication in the 230MHz frequency band of the power grid.

[0008] Furthermore, the header of the data unit packet is also embedded with a timestamp and a source terminal identifier. The receiving end quickly reassembles and tracks the source of the instruction based on the timestamp and the source terminal identifier, and performs scheduling through control signaling.

[0009] The packet header serial number uses incremental encoding; the command data carried by the packet body uses segmented compression technology, and the verification information integrates cyclic redundancy check and parity check bits to form a double verification layer;

[0010] Based on the terminal distribution density and service priority, a weighted evaluation model is used to dynamically calculate the required number of carriers; the service priority is adjusted by the weight coefficient.

[0011] Furthermore, the method of calculating the required number of carriers based on terminal distribution density and service priority, scanning the target frequency band to select a subcarrier combination, and dynamically allocating subcarriers for the data unit packet includes:

[0012] A weighted evaluation model is used to dynamically calculate the number of required carriers, which is expressed as:

[0013] N req =α×ρ+β×Q priority +γ×(1-η)+δ×Δ Thistory ; Where: N req is the number of carrier requirements calculated dynamically; α is the weight coefficient of terminal distribution density; ρ represents the terminal distribution density, the unit is the number of terminals / square kilometer; β is the weight coefficient of service priority; Q priority represents the service priority index; γ is the channel quality compensation coefficient; η is the channel quality coefficient, ranging from 0 to 1; δ is the historical peak adjustment coefficient; Δ Thistory Use the offset amount for the historical peak carrier.

[0014] Furthermore, the method of calculating the required number of carriers based on terminal distribution density and service priority, scanning the target frequency band to select a subcarrier combination, and dynamically allocating subcarriers for the data unit packet also includes:

[0015] Based on the real-time network status and service requirements, the optimal subcarrier combination is allocated to each data unit packet, which is expressed as:

[0016] Where: S alloc is the set of subcarrier identifiers assigned to the data unit packet; S is the set of all available subcarriers; λ is the interference suppression weight coefficient; I(s) represents the interference intensity of subcarrier s; μ is the delay sensitivity weight coefficient; D(s,P) represents the estimated transmission delay of subcarrier s under service priority P, which is expressed as where t propis the propagation delay, B(s) is the subcarrier bandwidth, P is the service priority, P = 1.0 for emergency load shedding, and P = 0.5 for normal data; ν is the load balancing weight coefficient; L(Q) represents the impact of the data unit packet size Q on the load of spectrum resources.

[0017] Furthermore, the method for allocating continuous reserved time slot resources to a designated terminal and constructing an exclusive extended data transmission channel includes:

[0018] The terminal retains access in the reserved time slot; the time slot length is dynamically adjusted according to business needs; by dividing the data into multiple small blocks and assigning them to different time slots, a retransmission mechanism is used for error correction when reassembled at the receiving end.

[0019] Furthermore, the method for allocating continuous reserved time slot resources to a designated terminal and constructing an exclusive extended data transmission channel further includes:

[0020] When a terminal reports a service request, the core network allocates a reserved time slot identifier through a downlink message. The time slot length is adjustable. The calculation of the reserved time slot length is expressed as: Where: T sl ot is the reserved time slot length in milliseconds; β is the service priority weight factor, ranging from 0.8 to 1.2; Q is the size of the data packet to be transmitted in bytes; R is the channel transmission rate in kbps; ΔT guard is the protection interval time; the unit is milliseconds;

[0021] At the start of a specified time slot, the terminal divides the data into N small blocks. The size of each small block adapts to the time slot capacity and transmits the data directly, skipping the carrier sensing process. The small blocks of data are continuously transmitted through the reserved time slot to form an exclusive channel.

[0022] Furthermore, a method for jointly reassembling multi-carrier discrete spectrum data at a receiving end, verifying data integrity through an error correction mechanism, and restoring the original service instruction includes:

[0023] The receiving end performs spectrum reorganization and recovery processes based on the verification information, eliminates carrier transmission delay differences through time-space alignment compensation, aggregates discrete spectrum data streams based on packet header identifiers, and repairs transmission damage through layered error correction;

[0024] Small blocks of data are reassembled based on the sequence number, and the reassembled data packets are detected using CRC check. When the check fails, an automatic retransmission request is triggered, and the core network reallocates the reserved time slot to retransmit the erroneous block. After the transmission is completed, the time slot resources are automatically recycled to the pool for reuse by other terminals.

[0025] Furthermore, the method of jointly reassembling the multi-carrier discrete spectrum data at the receiving end, verifying the data integrity through an error correction mechanism, and restoring the original service instruction also includes:

[0026] Eliminating carrier transmission delay difference through time-space alignment compensation is expressed as: in: is the data unit after the nth carrier is aligned; d n (t) is the original data unit received by the nth carrier; Δτn is the time offset compensation of the nth carrier; Δfn is the frequency offset compensation of the nth carrier;

[0027] Aggregating discrete spectrum data streams based on packet header identifiers is represented as Where: D full is the complete data matrix after reorganization; N c is the number of carriers used for the current transmission dynamically specified by the transmitter; Sn(·) is the serialization operator for the nth carrier data block sorted according to the packet header sequence number.

[0028] Furthermore, the method of jointly reassembling the multi-carrier discrete spectrum data at the receiving end, verifying the data integrity through an error correction mechanism, and restoring the original service instruction also includes:

[0029] High-priority services are forced to be processed first. If the service identifier Priority = 1.0 is detected, the regular queue is skipped and reassembled directly;

[0030] Perform forward error correction after carrier alignment D corrected =ReedSolomon(D full ,N sym ,K sym ); where: N sym is the total number of symbols in the RS codeword; K sym is the number of valid data symbols;

[0031] Reassemble the small data blocks based on the sequence number and use CRC check to check the reassembled data packets: Among them: CRC header It is the checksum carried by the packet header; CRC32(·) is a 32-bit cyclic redundancy check function;

[0032] Separate verification of key fields of business instructions: Among them: I cmd is the parsed business instruction; H cmd It is the hash value of the instruction field stored at the end of the packet;

[0033] Implement fault-tolerant recovery of business instructions through state machine decision-making:

[0034]

[0035] Among them: I outputis the final output service instruction; ARQ(·) is the automatic retransmission request, which retransmits the error data block in RetryList; EMG_Backup is the emergency instruction backup mechanism.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] 1. Regarding spectrum resource utilization, a dynamic carrier allocation model, combined with real-time channel scanning technology, efficiently integrates discrete frequency band resources. This mechanism alleviates communication congestion in densely populated areas while also preventing spectrum idleness in areas with low traffic density. The synergy between multi-carrier parallel transmission and an intelligent subcarrier selection algorithm helps improve spectrum utilization and support the massive access of terminals in scenarios with high penetration of new energy.

[0038] 2. This invention improves the overall performance of load shedding services in complex power communication environments through dynamic multi-carrier aggregation and a hierarchical scheduling mechanism. A packet segmentation strategy adaptive to service characteristics reduces protocol overhead while ensuring efficient transmission of critical instructions. By establishing exclusive transmission channels for high-priority services, the latency jitter caused by channel contention is effectively avoided, enhancing the end-to-end transmission timeliness of emergency load shedding instructions.

[0039] 3. System reliability is enhanced through a multi-level error correction mechanism. The receiving end utilizes joint spatiotemporal reconstruction technology to effectively compensate for time-frequency deviations caused by multipath transmission, while a layered verification strategy combining packet header sequence verification and service instruction hash verification enhances data integrity. When a high-priority instruction anomaly is detected, the system rapidly recovers critical service instructions through an emergency backup mechanism, mitigating the risk of control failures caused by data errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The present invention will be described in further detail below with reference to the accompanying drawings.

[0041] Figure 1 : Schematic diagram of the process of the present invention. DETAILED DESCRIPTION

[0042] In order to better understand the present invention, the content of the present invention is further clearly described below in conjunction with the examples and drawings, but the protection content of the present invention is not limited to the following examples. In the following description, a large number of specific details are given in order to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details.

[0043] Example 1: See Figure 1 , a wireless communication control method based on load shedding service of this embodiment includes:

[0044] S1. Establish a dedicated network communication link in the target frequency band that supports the multi-carrier transmission channel of the service. The dedicated network communication link includes:

[0045] The PDT core network, used for core control, deploys quantum encryption modules to achieve dual authentication of signaling;

[0046] PDT data transmission base station, used for edge access, with integrated service perception unit to monitor channel quality in real time;

[0047] The terminal is used to execute the transmission of data unit packets, and the built-in communication chip supports multi-carrier communication in the 230MHz frequency band of the power grid.

[0048] S2. Dynamically adjust the packet length threshold based on service priority. Smaller fragments are used for high-priority instructions to reduce transmission delay, while larger fragments are allowed for large-capacity instructions to reduce header overhead. Load shedding service instructions are segmented into data unit packets that can be transmitted in parallel according to a preset data unit packet length threshold. A service type identifier and sequence number are added to the packet header, and the packet body carries the instruction data and verification information for the data unit packet.

[0049] The packet header also embeds a timestamp and source terminal identifier. The receiving end can quickly reassemble and track the source of the instruction based on the timestamp and source terminal identifier, and perform scheduling through control signaling.

[0050] The packet header sequence number uses incremental coding to prevent business logic errors caused by out-of-order transmission;

[0051] The command data carried by the package body uses segmented compression technology. This embodiment uses the dictionary-based LZ77 algorithm to reduce the amount of redundant data; the verification information integrates cyclic redundancy check and parity check bits to form a double verification layer;

[0052] A weighted evaluation model is used to dynamically calculate the number of required carriers based on terminal density and service priority. For example, in areas with dense new energy access, the number of carriers is increased to accommodate high concurrent uploads. Service priority is adjusted using weight coefficients to ensure that more carrier resources are allocated to critical instructions. When scanning the target frequency band, a real-time spectrum analyzer detects available subcarriers (such as discrete idle bands in the 230MHz band) to avoid known interference sources (such as industrial equipment interference).

[0053] Intelligent selection algorithms, such as a ranking mechanism based on signal-to-noise ratio (SNR) and frequency band availability, prioritize low-interference, high-bandwidth subcarrier combinations. Dynamic optimization of subcarrier combinations, including frequency band aggregation (merging non-contiguous frequency bands) and adaptive bandwidth adjustment, are used to match the capacity requirements of data unit packets.

[0054] A dynamic mapping strategy is implemented when allocating subcarriers to each data unit packet. Based on the packet header's service type identifier, high-priority packets are assigned to stable carriers (such as the center frequency band), while common packets use the edge frequency band. Furthermore, an integrated power control module adjusts transmit power to balance inter-carrier interference.

[0055] S3. Dynamically allocate discrete carrier frequency bands for data unit packets for multi-carrier parallel transmission; calculate the required number of carriers based on terminal distribution density and service priority, scan the target frequency band to select subcarrier combinations, and dynamically allocate discrete carrier frequency bands for data unit packets; the terminal randomly accesses and uploads data in parallel on the multi-carrier service channel at the same time;

[0056] Step S3 includes:

[0057] S31. A weighted evaluation model is used to dynamically calculate the number of required carriers. The core of this model is to optimize spectrum resource utilization and ensure that multi-carrier parallel upload technology can efficiently support load shedding services in the power 230M wireless communication network. While ensuring service reliability and low latency, it minimizes carrier resource waste and maximizes spectrum efficiency. It is expressed as:

[0058] N req =α×ρ+β×Q priority +γ×(1-η)+δ×Δ Thistory ; Where: N req is the dynamically calculated number of carrier demands; α is the weight coefficient of terminal distribution density, ranging from 0.1 to 0.3. It quantifies the impact of the number of terminals on carrier demand. A larger value indicates a more significant impact of density on resource demand. ρ is the terminal distribution density, calculated as the number of online terminals in a specific area (such as a 1 square kilometer grid) divided by the area. The data comes from the periodic scanning of PDT data transmission base stations. β is the weight coefficient of service priority, set between 0.2 and 0.4. This coefficient adjusts the contribution of service type to carrier demand. A high value ensures that critical services get resources first. Q priority is the service priority index, a normalized value (0 to 1) calculated based on the service type: for example, emergency load shedding is 1.0, new energy monitoring is 0.7, and power consumption collection is 0.5; γ is the channel quality compensation coefficient, with a default value of 1.0. When the channel deteriorates (such as increased interference), the coefficient is automatically increased to above 1.5 to compensate for signal loss; η is the channel quality coefficient, calculated jointly by the packet error rate and spectrum occupancy: η = (1-packet error rate) × (1-spectrum occupancy). A higher value indicates a better channel, ranging from 0 to 1; δ is the historical peak adjustment coefficient, fixed at 0.1, which introduces historical data to smooth sudden fluctuations; Δ Thistory The historical peak carrier usage deviation is calculated as the difference between the current carrier demand and the peak number of carriers in the same scenario in the past seven days. This parameter prevents resource underestimation.

[0059] This formula integrates multiple influencing factors into an optimization objective function through weighted summation: minimize |N req -N actual ∣, where N actual The optimization process is performed in real time in the PDT core network to ensure that resource allocation closely matches service needs.

[0060] S32. Based on the real-time network status and service requirements, allocate the optimal subcarrier combination to each data unit packet, expressed as:

[0061] Where: S alloc is the set of subcarrier identifiers assigned to the data unit packet; S is the set of all available subcarriers, obtained by scanning the 230MHz frequency band, and the set size changes dynamically based on the spectrum sensing results; λ is the interference suppression weight coefficient, ranging from 0.3 to 0.5; this coefficient adjusts the priority of interference minimization, and a higher value indicates that the algorithm prefers low-interference subcarriers; I(s) represents the interference strength of subcarrier s, calculated as I(s) = RSSI noise / RSSI signal , where RSSI noise is the noise intensity, RSSI signal is the signal strength, and higher values ​​indicate greater interference; μ is the delay sensitivity weight coefficient, which is fixed at 0.4; this coefficient ensures that high-priority services obtain low-latency subcarriers, and larger values ​​indicate more important delay optimization; D(s, P) is the estimated transmission delay of subcarrier s under service priority P, expressed as where t prop is the propagation delay, B(s) is the subcarrier bandwidth, P is the service priority, P = 1.0 for emergency load shedding, P = 0.5 for normal data; ν is the load balancing weight coefficient, with a default value of 0.3. This coefficient prevents large packets from causing spectrum congestion; a higher value indicates a higher load balancing priority; L(Q) represents the impact of the data unit packet size Q on the spectrum resource load, calculated as L(Q) = Q / Q max , where Q max is the maximum allowed packet size.

[0062] S4. Allocate continuous reserved time slot resources for the designated terminal to establish an exclusive extended data transmission channel, including:

[0063] The core network maintains a slot pool. High-priority services (such as emergency load shedding) are preferentially allocated multiple consecutive slots, allowing terminals to retain access in reserved slots. The slot length is dynamically adjusted based on service demand. Data is segmented into smaller chunks and allocated to different slots. Errors are corrected using a retransmission mechanism when data is reassembled at the receiving end.

[0064] When a terminal reports a service request, the core network allocates a reserved time slot identifier through a downlink message. The time slot length is adjustable. The calculation of the reserved time slot length is expressed as: Where: T sl ot is the reserved time slot length in milliseconds, which is dynamically set by the core network to ensure the complete transmission of data packets; β is the service priority weight factor, which ranges from 0.8 to 1.2. High-priority services (such as load shedding instructions) take higher values ​​to optimize resource allocation; Q is the size of the data packet to be transmitted, in bytes, which is derived from the service data reported by the terminal; R is the channel transmission rate, in kbps, based on the channel measurement of the PDT private network; ΔT guard The guard interval is in milliseconds, with a default value of 0.5ms, to prevent time slot overlap interference.

[0065] At the start of a specified time slot, the terminal divides the data into N small blocks. The size of each small block adapts to the time slot capacity and transmits the data directly, skipping the carrier sensing process. The small blocks of data are continuously transmitted through the reserved time slot, forming an exclusive channel.

[0066] The improvement in data transmission efficiency is expressed as Where: η trans is the transmission efficiency, measured in bps / Hz, which measures spectrum utilization. A higher value indicates better resource utilization. N is the number of data blocks, which are dynamically divided by the sender based on the time slot capacity. S block T is the size of a single data block in bytes, typically 128–512 bytes, adapted to the time slot length; slot is the reserved time slot length in milliseconds; B is the channel bandwidth in Hz, which is fixed at 25 kHz in the 230 MHz band.

[0067] S5. At the receiving end, the multi-carrier discrete spectrum data is jointly reassembled, the data integrity is verified through an error correction mechanism, and the original service instructions are restored, including:

[0068] The receiving end performs spectrum reorganization and recovery based on the verification information, eliminates carrier transmission delay differences through time and space alignment compensation, aggregates discrete spectrum data streams based on packet header identifiers, and repairs transmission damage through layered error correction.

[0069] Small blocks of data are reassembled based on sequence numbers, and CRC check is used to detect the reassembled data packets. If the check fails, an automatic retransmission request is triggered, and the core network reallocates the reserved time slot to retransmit the error block. After the transmission is completed, the time slot resource is automatically recycled to the pool for reuse by other terminals.

[0070] Eliminating carrier transmission delay difference through time-space alignment compensation is expressed as: in: is the data unit after the nth carrier is aligned, coming from the PDT data transmission base station receiver; d n (t) is the raw data unit received by the nth carrier; Δτn is the time offset compensation of the nth carrier, calculated based on the distance difference between the carrier frequencies (for example, 228.375 MHz vs. 229.875 MHz); Δfn is the frequency offset compensation of the nth carrier, estimated using the carrier pilot signal.

[0071] Aggregating discrete spectrum data streams based on packet header identifiers is represented as Where: D full is the complete data matrix after reorganization; N c is the number of carriers used for the current transmission dynamically specified by the sender, specified by the sender in the downlink message; Sn(·) is the serialization operator for the nth carrier data block sorted according to the packet header sequence number, sorted according to the packet header sequence number field;

[0072] High-priority services (such as load shedding instructions) are forced to be processed first. If the service identifier Priority = 1.0 is detected, the regular queue is skipped and reorganized directly;

[0073] Perform forward error correction after carrier alignment D corrected =ReedSolomon(D full ,N sym ,K sym ); where: N sym is the total number of RS codeword symbols, a physical layer FEC parameter, fixed to the system configuration value; K sym is the number of valid data symbols;

[0074] Reassemble the small data blocks based on the sequence number and use CRC check to check the reassembled data packets: Among them: CRC header It is the checksum carried by the packet header and generated by the sender; CRC32(·) is a 32-bit cyclic redundancy check function;

[0075] Separate verification of key fields of business instructions: Among them: I cmd is the parsed business instruction; H cmd It is the hash value of the instruction field stored at the end of the packet;

[0076] Implement fault-tolerant recovery of business instructions through state machine decision-making:

[0077]

[0078] Among them: I outputis the final output service instruction; ARQ(·) is the automatic retransmission request, which retransmits the erroneous data block in RetryList; EMG_Backup is the emergency instruction backup cache, which stores the most recent valid instruction and is enabled when the high-priority instruction fails to be verified.

[0079] Technical effects of this embodiment:

[0080] 1. Regarding spectrum resource utilization, a dynamic carrier allocation model, combined with real-time channel scanning technology, efficiently integrates discrete frequency band resources. This mechanism alleviates communication congestion in densely populated areas while also preventing spectrum idleness in areas with low traffic density. The synergy between multi-carrier parallel transmission and an intelligent subcarrier selection algorithm helps improve spectrum utilization and support the massive access of terminals in scenarios with high penetration of new energy.

[0081] 2. This invention improves the overall performance of load shedding services in complex power communication environments through dynamic multi-carrier aggregation and a hierarchical scheduling mechanism. A packet segmentation strategy adaptive to service characteristics reduces protocol overhead while ensuring efficient transmission of critical instructions. By establishing exclusive transmission channels for high-priority services, the latency jitter caused by channel contention is effectively avoided, enhancing the end-to-end transmission timeliness of emergency load shedding instructions.

[0082] 3. System reliability is enhanced through a multi-level error correction mechanism. The receiving end utilizes joint spatiotemporal reconstruction technology to effectively compensate for time-frequency deviations caused by multipath transmission, while a layered verification strategy combining packet header sequence verification and service instruction hash verification enhances data integrity. When a high-priority instruction anomaly is detected, the system rapidly recovers critical service instructions through an emergency backup mechanism, mitigating the risk of control failures caused by data errors.

[0083] 4. Dynamic optimization of resource allocation further enhances system adaptability. Mechanisms such as dynamic adjustment of time slot length based on service demand and real-time calculation of the number of carriers based on terminal density ensure that communication resources closely align with the actual operating conditions of the power grid. Resource recovery mechanisms also ensure the timely release of reserved time slots, avoiding waste caused by resource stagnation, thereby creating a sustainable and optimized resource scheduling ecosystem.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention and are not limiting. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A wireless communication control method based on load shedding service, characterized in that: include: Establish a dedicated network communication link that supports multi-carrier transmission channels for services in the target frequency band; Dynamically adjust the packet length threshold based on service priority; The load shedding service instruction is divided into data unit packets that can be transmitted in parallel according to the preset data unit packet length threshold range, the packet header is added with a service type identifier and a sequence number, and the packet body carries the instruction data and verification information of the data unit packet; Dynamically allocating discrete carrier frequency bands for the data unit packets to perform multi-carrier parallel transmission; The required number of carriers is calculated based on terminal distribution density and service priority, and the target frequency band is scanned to select subcarrier combinations, dynamically allocating discrete carrier frequency bands for data unit packets. The terminal randomly accesses and uploads data in parallel on multiple carrier frequency service channels simultaneously. Allocate continuous reserved time slot resources to designated terminals to build exclusive extended data transmission channels; At the receiving end, the multi-carrier discrete spectrum data is jointly reassembled, the data integrity is verified through the error correction mechanism, and the original service instructions are restored.

2. The wireless communication control method based on load shedding service according to claim 1, characterized in that: The private network communication link includes: The PDT core network, used for core control, deploys quantum encryption modules to achieve dual authentication of signaling; PDT data transmission base station, used for edge access, with integrated service perception unit to monitor channel quality in real time; The terminal is used to execute the transmission of data unit packets, and the built-in communication chip supports multi-carrier communication in the 230MHz frequency band of the power grid.

3. The wireless communication control method based on load shedding service according to claim 1, characterized in that: The header of the data unit packet also embeds a timestamp and a source terminal identifier, and the receiving end quickly reassembles and tracks the source of the instruction based on the timestamp and the source terminal identifier, and performs scheduling through control signaling; The packet header serial number uses incremental encoding; the command data carried by the packet body uses segmented compression technology, and the verification information integrates cyclic redundancy check and parity check bits to form a double verification layer; Based on terminal distribution density and service priority, a weighted evaluation model is used to dynamically calculate the number of required carriers. The service priority is adjusted by the weight coefficient.

4. The wireless communication control method based on load shedding service according to any one of claims 1 to 3, characterized in that: The method for calculating the required number of carriers based on terminal distribution density and service priority, scanning the target frequency band to select a subcarrier combination, and dynamically allocating subcarriers for data unit packets includes: A weighted evaluation model is used to dynamically calculate the number of required carriers, which is expressed as: N req =α×ρ+β×Q priority +γ×(1-η)+δ×Δ Thistory ; Where: N req is the number of carrier requirements calculated dynamically; α is the weight coefficient of terminal distribution density; ρ represents the terminal distribution density, the unit is the number of terminals / square kilometer; β is the weight coefficient of service priority; Q priority represents the service priority index; γ is the channel quality compensation coefficient; η is the channel quality coefficient, ranging from 0 to 1; δ is the historical peak adjustment coefficient; Δ Thistory Use the offset amount for the historical peak carrier.

5. The wireless communication control method based on load shedding service according to claim 4, characterized in that: The method for calculating the required number of carriers based on terminal distribution density and service priority, scanning the target frequency band to select a subcarrier combination, and dynamically allocating subcarriers for the data unit packet also includes: Based on the real-time network status and service requirements, the optimal subcarrier combination is allocated to each data unit packet, which is expressed as: Where: S alloc is the set of subcarrier identifiers assigned to the data unit packet; S is the set of all available subcarriers; λ is the interference suppression weight coefficient; I(s) represents the interference intensity of subcarrier s; μ is the delay sensitivity weight coefficient; D(s,P) represents the estimated transmission delay of subcarrier s under service priority P, which is expressed as where t prop is the propagation delay, B(s) is the subcarrier bandwidth, P is the service priority, P = 1.0 for emergency load shedding, and P = 0.5 for normal data; ν is the load balancing weight coefficient; L(Q) represents the impact of the data unit packet size Q on the load of spectrum resources.

6. The wireless communication control method based on load shedding service according to claim 1, characterized in that: The method for allocating continuous reserved time slot resources to a designated terminal and establishing an exclusive extended data transmission channel includes: The terminal retains access in the reserved time slot; the time slot length is dynamically adjusted according to business needs; by dividing the data into multiple small blocks and assigning them to different time slots, a retransmission mechanism is used for error correction when reassembled at the receiving end.

7. The wireless communication control method based on load shedding service according to claim 6, characterized in that: The method for allocating continuous reserved time slot resources to a designated terminal to construct an exclusive extended data transmission channel further includes: When a terminal reports a service request, the core network allocates a reserved time slot identifier through a downlink message. The time slot length is adjustable. The calculation of the reserved time slot length is expressed as: Where: T sl ot is the reserved time slot length in milliseconds; β is the service priority weight factor, ranging from 0.8 to 1.2; Q is the size of the data packet to be transmitted in bytes; R is the channel transmission rate in kbps; ΔT guard is the protection interval time; the unit is milliseconds; At the start of a specified time slot, the terminal divides the data into N small blocks. The size of each small block adapts to the time slot capacity and transmits the data directly, skipping the carrier sensing process. The small blocks of data are continuously transmitted through the reserved time slot to form an exclusive channel.

8. The wireless communication control method based on load shedding service according to claim 1, characterized in that: The method for jointly reassembling multi-carrier discrete spectrum data at the receiving end, verifying data integrity through an error correction mechanism, and restoring the original service instructions includes: The receiving end performs spectrum reorganization and recovery processes based on the verification information, eliminates carrier transmission delay differences through time-space alignment compensation, aggregates discrete spectrum data streams based on packet header identifiers, and repairs transmission damage through layered error correction; Small blocks of data are reassembled based on the sequence number, and the reassembled data packets are detected using CRC check. When the check fails, an automatic retransmission request is triggered, and the core network reallocates the reserved time slot to retransmit the erroneous block. After the transmission is completed, the time slot resources are automatically recycled to the pool for reuse by other terminals.

9. The wireless communication control method based on load shedding service according to claim 8, characterized in that: The method of jointly reassembling the multi-carrier discrete spectrum data at the receiving end, verifying the data integrity through an error correction mechanism, and restoring the original service instruction also includes: Eliminating carrier transmission delay difference through time-space alignment compensation is expressed as: in: is the data unit after the nth carrier is aligned; d n (t) is the original data unit received by the nth carrier; Δτn is the time offset compensation of the nth carrier; Δfn is the frequency offset compensation of the nth carrier; Aggregating discrete spectrum data streams based on packet header identifiers is represented as Where: D full is the complete data matrix after reorganization; N c is the number of carriers used for the current transmission dynamically specified by the transmitter; Sn(·) is the serialization operator for the nth carrier data block sorted according to the packet header sequence number.

10. The wireless communication control method based on load shedding service according to claim 8, characterized in that: The method of jointly reassembling the multi-carrier discrete spectrum data at the receiving end, verifying the data integrity through an error correction mechanism, and restoring the original service instruction also includes: High-priority services are forced to be processed first. If the service identifier Priority = 1.0 is detected, the regular queue is skipped and reassembled directly; Perform forward error correction after carrier alignment D corrected =ReedSolomon(D full ,N sym ,K sym ); where: N sym is the total number of symbols in the RS codeword; K sym is the number of valid data symbols; Reassemble the small data blocks based on the sequence number and use CRC check to check the reassembled data packets: Among them: CRC header It is the checksum carried by the packet header; CRC32(·) is a 32-bit cyclic redundancy check function; Separate verification of key fields of business instructions: Among them: I cmd is the parsed business instruction; H cmd It is the hash value of the instruction field stored at the end of the packet; Implement fault-tolerant recovery of business instructions through state machine decision-making: Among them: I output is the final output service instruction; ARQ(·) is the automatic retransmission request, which retransmits the error data block in RetryList; EMG_Backup is the emergency instruction backup mechanism.

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