Channel resource allocation method of power local wireless network based on wireless authentication and privacy infrastructure (WAPI)

Abstract

The invention provides a channel resource allocation method of a power local wireless network based on WAPI, and belongs to the technical field of power networks. Comprising the following steps: an access point reports information of a target terminal device which applies for channel resources and is accessed or disconnected to a slave chain of an edge computing layer; the slave chain sends target terminal equipment information and a service priority query request to a main chain of the distributed core layer; the main chain obtains to-be-allocated terminal equipment according to the target terminal equipment information and the access point historical resource allocation scheme, and sends the to-be-allocated terminal equipment and the corresponding service priority to an allocation server of the slave chain; the distribution server carries out channel resource distribution calculation according to the service priority of the terminal equipment, obtains a resource distribution scheme, and sends the resource distribution scheme to the slave chain; the slave chain issues the resource allocation scheme to the corresponding access point; and the slave chain reports the resource allocation scheme to the main chain. According to the invention, the proper resource unit can be allocated according to the service type or the service priority of the terminal equipment.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric power networks, and in particular relates to a channel resource allocation method for an electric power local wireless network based on WAPI. Background Art

[0002] As my country's first secure access technology standard with independent innovative intellectual property rights in the field of computer broadband wireless network communications, WAPI (Wireless LAN Authentication and Privacy Infrastructure) provides highly reliable security for wireless networks through its unique ternary peer-to-peer architecture and two-way authentication mechanism. Currently, wireless LANs that integrate the WAPI authentication process and WiFi6 transmission characteristics have emerged.

[0003] Power terminal devices have different service types. Therefore, when accessing wireless LANs based on WAPI and WiFi6, channel resources should be allocated according to the service priority of the terminal device. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a channel resource allocation method for a power local wireless network based on WAPI.

[0005] In order to solve one, part or all of the above technical problems, the technical solution adopted by the present invention is: A channel resource allocation method for a WAPI-based power local wireless network, wherein the power local wireless network includes a local communication layer, an edge computing layer, and a distributed core layer that are interconnected, and a terminal device accesses an access point of the local communication layer using WAPI and WiFi6 protocols; The channel resource allocation method comprises: The access point reports the channel resource application and the information of the target terminal device connected or disconnected to the slave chain of the edge computing layer; The slave chain sends a query request for target terminal device information and service priority to the master chain of the distributed core layer; The master chain obtains the terminal device to be allocated according to the target terminal device information and the historical resource allocation plan of the access point, and sends the terminal device to be allocated and the corresponding service priority to the allocation server of the slave chain; The allocation server performs channel resource allocation calculation according to the service priority of the terminal device, obtains a resource allocation plan, and sends the resource allocation plan to the slave chain; The slave chain sends the resource allocation plan to the corresponding access point, and the access point allocates channel resources for the current terminal device; The slave chain reports the resource allocation plan to the master chain.

[0006] Furthermore, the service priority is determined according to the service type, and the service type includes control service, burst service, large bandwidth transmission service and small granularity collection service, and the corresponding service priorities are 4, 3, 2 and 1 respectively.

[0007] Furthermore, the information of the target terminal device sent by the access point includes an identification ID and a status of the target terminal device, where the status is connected or disconnected.

[0008] Furthermore, the main chain obtains the corresponding service priority according to the identification ID of the terminal device.

[0009] Furthermore, the method in which the allocation server performs channel resource allocation calculation according to the service priority of the terminal device includes: allocating resource units to the terminal device in order according to the service priority of the terminal device.

[0010] Furthermore, the channel resource allocation scheme is expressed as ; Indicates the number of terminal devices, Indicates terminal equipment exist The number of channel resources allocated in a transmission time slot, , For terminal devices exist The number of subcarriers allocated in a transmission time slot; express The service priority of the power IoT service type transmitted on the Internet, .

[0011] Furthermore, the constraints of the channel resource allocation scheme include: , , , ; in Indicates the number of subcarriers; A value of 1 indicates a terminal device. Assigned to , the value 0 means it is not assigned to .

[0012] Furthermore, the subcarrier is the minimum unit of channel resources allocated to the terminal device, and the number of the subcarriers is 26, 52, 106, 242, 484, 996 or 2×996.

[0013] Compared with the prior art, the present invention has the following beneficial effects: When allocating channel resources, the present invention can allocate suitable resource units according to the service type or service priority of the terminal device, thereby meeting service needs, enabling multiple users to efficiently transmit data simultaneously, reducing network congestion and delays, and improving the overall performance and resource utilization of the network.

[0014] The electric power local wireless network to which the present invention is applicable adopts decentralized resource collaborative scheduling, flexibly allocates communication, storage and computing resources within and between distributed core networks according to business collaboration needs, and uses the resources and computing power of the allocation server to complete the allocation calculation of channel resources, flexibly meeting the business needs of massive terminals, alleviating network pressure, and improving business service capabilities. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0016] Figure 1 : A schematic diagram of the structure of the power local wireless network of the present invention; Figure 2 : Schematic diagram of the process of the present invention; Figure 3 : A flow chart of the allocation server of the present invention for allocating channel resources. DETAILED DESCRIPTION

[0017] In order to better understand the present invention, the content of the present invention is further clearly described below in conjunction with the embodiments and the accompanying drawings, but the protection content of the present invention is not limited to the following embodiments. In the following description, a large number of specific details are provided 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.

[0018] Example 1: See Figure 1-Figure 3 , the purpose of this embodiment is to provide a channel resource allocation method for a power local wireless network based on WAPI.

[0019] The structure of the local power wireless network based on WAPI is as follows: Figure 1 As shown, it includes a local communication layer, an edge computing layer and a distributed core layer that are interconnected. The terminal device of the local communication layer accesses the access point of the local communication layer using WAPI and WiFi6 protocols. The edge computing layer includes a slave chain composed of multiple devices, and the distributed core layer includes a master chain composed of multiple devices; the slave chain includes a distribution server.

[0020] like Figure 2 As shown, the channel resource allocation method includes: When the access point receives an access request from the target terminal device, or detects that the target terminal device is disconnected, it reports the channel resource application and the information of the target terminal device to the slave link; After receiving the channel resource application from the access point, the slave link sends the target terminal device information and service priority query request to the main link; After receiving the service priority query request, the main link first determines the state of the target terminal device according to the target terminal device information, then obtains the terminal device to be allocated according to the historical resource allocation plan of the access point, and sends the terminal device to be allocated and the corresponding service priority to the allocation server; if the state of the target terminal device is connected, the target terminal device and the service priority, as well as other terminal devices and service priorities in the historical resource allocation plan of the access point are synchronously sent to the allocation server; if the state of the target terminal device is disconnected, the target terminal device is removed from the historical resource allocation plan of the access point, and other terminal devices and service priorities are sent to the allocation server; After receiving the service priority of the terminal device sent by the main link, the allocation server performs channel resource allocation calculation according to the service priority of the terminal device and obtains a resource allocation plan; The allocation server sends the resource allocation plan to the slave chain, and the slave chain sends the resource allocation plan to the corresponding access point, and the access point allocates channel resources for the current terminal device; After issuing the resource allocation plan, the slave chain will also send the resource allocation plan to the main chain, which will store the resource allocation plan.

[0021] The information of the target terminal device includes the identification ID (such as MAC address) and status (such as connected or disconnected) of the target terminal device. The main link obtains the corresponding service priority according to the identification ID of the terminal device, and the service priority is determined according to the specific service type. The service types of power terminal equipment include control service, burst service, large bandwidth transmission service, and small particle collection service, and the corresponding service priorities are 4, 3, 2, and 1 respectively.

[0022] In WiFi6 transmission, the entire channel bandwidth can be divided into several orthogonal subcarriers, and different numbers of subcarriers can form subchannels, which are called RUs (Resource Units). RUs of different sizes in a time slot can be allocated to different users for transmission, and the allocation of channel resources becomes more flexible. In order to simplify resource scheduling and allocation, the number of subcarriers in RU is fixed in WiFi6, and the number of subcarriers that make up RU is 26, 52, 106, 242, 484, 996, and 2×996. Obviously, due to the size of the channel bandwidth, 484-tone RU only exists in channel bandwidths of 40MHZ, 80MHZ, and 160MHZ, while 996-tone RU only exists in channel bandwidths of 80MHZ and 160MHZ. Taking the RU division of a 20MHz channel as an example, the entire channel bandwidth can be divided into RUs of different sizes according to the bandwidth. In the bandwidth, the seven subcarriers centered around the central subcarrier are used as DC protection. At the edge of the channel, there are six and five subcarriers respectively as edge protection between channels. The single subcarrier in between is an empty carrier, which serves as a protection carrier between RUs.

[0023] In WiFi6, the AP can specify how many RUs are used in the entire bandwidth according to the terminal service transmission type, and can allocate RUs of different sizes to different terminals to meet service needs. The service transmission quality is related to the channel conditions of the RU and the size of the subcarriers contained in the RU. The AP can allocate the channel bandwidth in the same time slot to different terminals according to different service priorities, which greatly increases the flexibility of service scheduling.

[0024] Subcarrier is defined as the smallest unit of channel resources allocated to terminal devices. Assuming that the transmission bandwidth of the current AP remains unchanged during the transmission time, the number of subcarriers it contains is ST and SA are the sets of terminal devices and transmission time slots respectively. , Indicates the number of terminal devices; , Indicates the number of transmission time slots. Definition For terminal devices exist The number of subcarriers allocated in a transmission time slot. Therefore, the terminal device exist The number of channel resources allocated in a transmission time slot It can be expressed as: .

[0025] The channel resource allocation scheme of the allocation server is expressed as , represents the number of channel resources and service transmission type allocated to each terminal at the current transmission time, where express The service priority of the power IoT service type transmitted on the Internet, .

[0026] At the same time, the channel resource allocation scheme also has the following constraints: , , , , .in A value of 1 indicates a terminal device. Assigned to , the value 0 means it is not assigned to .

[0027] Finally, if Figure 3 As shown, the allocation server allocates channel resources according to the priority of the terminal device service type. The higher the service priority ( The terminal devices with larger values ​​are allocated RUs first, and the remaining RUs are allocated in turn according to the service priorities of the remaining terminal devices.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in the 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 method for allocating channel resources in a power local wireless network based on WAPI, characterized in that: The power local wireless network includes a local communication layer, an edge computing layer and a distributed core layer that are interconnected, and the terminal device accesses the access point of the local communication layer using WAPI and WiFi6 protocols; The channel resource allocation method comprises: The access point reports the channel resource application and the information of the target terminal device connected or disconnected to the slave chain of the edge computing layer; The slave chain sends a query request for target terminal device information and service priority to the master chain of the distributed core layer; The master chain obtains the terminal device to be allocated according to the target terminal device information and the historical resource allocation plan of the access point, and sends the terminal device to be allocated and the corresponding service priority to the allocation server of the slave chain; The allocation server performs channel resource allocation calculation according to the service priority of the terminal device, obtains a resource allocation plan, and sends the resource allocation plan to the slave chain; The slave chain sends the resource allocation plan to the corresponding access point, and the access point allocates channel resources for the current terminal device; The slave chain reports the resource allocation plan to the master chain.

2. The channel resource allocation method of the WAPI-based power local wireless network according to claim 1 is characterized in that: The service priority is determined according to the service type, and the service type includes control service, burst service, large bandwidth transmission service and small particle collection service, and the corresponding service priorities are 4, 3, 2 and 1 respectively.

3. The channel resource allocation method of the WAPI-based power local wireless network according to claim 1 is characterized in that: The information of the target terminal device sent by the access point includes the identification ID and status of the target terminal device, where the status is connected or disconnected.

4. The channel resource allocation method of the WAPI-based power local wireless network according to claim 3 is characterized in that: The main chain obtains the corresponding service priority according to the identification ID of the terminal device.

5. The channel resource allocation method of the WAPI-based power local wireless network according to claim 1, characterized in that: The method for the allocation server to calculate channel resource allocation according to the service priority of the terminal device includes: allocating resource units to the terminal device in order according to the service priority of the terminal device.

6. The channel resource allocation method of the WAPI-based power local wireless network according to claim 1, characterized in that: The channel resource allocation scheme is expressed as ; Indicates the number of terminal devices, Indicates terminal equipment exist The number of channel resources allocated in a transmission time slot, , For terminal devices exist The number of subcarriers allocated in a transmission time slot; express The service priority of the power IoT service type transmitted on the Internet, .

7. The channel resource allocation method of the WAPI-based power local wireless network according to claim 6, characterized in that: The constraints of the channel resource allocation scheme include: , , , ; in Indicates the number of subcarriers; A value of 1 indicates a terminal device. Assigned to , the value 0 means it is not assigned to .

8. The channel resource allocation method of the WAPI-based power local wireless network according to claim 7, characterized in that: The subcarrier is the smallest unit of channel resources allocated to the terminal device, and the number of the subcarriers is 26, 52, 106, 242, 484, 996 or 2×996.

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