CN118100177A

CN118100177A - Method and device for determining working frequency band, central coordinator and storage medium

Info

Publication number: CN118100177A
Application number: CN202410514069.XA
Authority: CN
Inventors: 王蕊; 赵旭; 张玉冰; 黄飞; 陈永利; 周顺伟; 孙丽国
Original assignee: Electric Power Research Institute of State Grid Chongqing Electric Power Co Ltd; Beijing Smartchip Microelectronics Technology Co Ltd
Current assignee: Electric Power Research Institute of State Grid Chongqing Electric Power Co Ltd; Beijing Smartchip Microelectronics Technology Co Ltd
Priority date: 2024-04-26
Filing date: 2024-04-26
Publication date: 2024-05-28

Abstract

The invention discloses a method and a device for determining a working frequency band, a central coordinator and a storage medium. The operating frequency band determining method is applied to a central coordinator of a power communication network in which a power distribution network has a co-existing marketing network. The radio frequency transceiver is used for monitoring the frequency point of the network message, and firstly, the working frequency band of the radio frequency transceiver is set to be a specified frequency band overlapped with the working frequency band of the marketing network; then determining a message monitoring result of the radio frequency transceiver according to the network type carried in the monitored network message and used for indicating that the network message comes from the marketing network or the distribution network; and finally, if the message monitoring result shows that the network message from the marketing network is not monitored, controlling the power distribution network to work in the appointed frequency band. The frequency division multiplexing is realized on the communication capacity in a power distribution network active detection mode, so that the utilization rate of communication resources is effectively improved, and the occurrence probability problems of frequency band use conflicts, network connection, meter reading quality reduction and the like are reduced.

Description

Method and device for determining working frequency band, central coordinator and storage medium

Technical Field

The embodiment of the specification relates to the technical field of power communication, in particular to a method and a device for determining a working frequency band, a central coordinator and a storage medium.

Background

The current Power distribution field is also gradually starting to use a Communication technology based on HPLC (High-speed Power line carrier Communication). However, since marketing HPLC has deployed applications, the use of HPLC communication by the distribution network scenario may have an impact on marketing traffic.

Disclosure of Invention

The embodiments of the present specification aim to solve at least one of the technical problems in the related art to some extent. For this reason, the embodiments of the present specification provide a method, an apparatus, a central coordinator and a storage medium for determining an operating frequency band.

The embodiment of the specification provides a working frequency band determining method which is applied to a central coordinator of a power communication network, wherein a power distribution network in the power communication network is provided with a coexisting marketing network; the method comprises the following steps:

setting the working frequency band of the radio frequency transceiver as a designated frequency band; the radio frequency receiving and transmitting equipment is used for monitoring the frequency point of the network message, and the designated frequency band is overlapped with the working frequency band of the marketing network;

Determining a message monitoring result of the radio frequency transceiver according to the network type carried in the monitored network message; wherein the network type is used for indicating that the network message comes from the marketing network or the power distribution network;

If the message monitoring result shows that the target type message is not monitored, controlling the power distribution network to work in the appointed frequency band; wherein the target type message is a network message from the marketing network.

In one embodiment, the operating frequency band of the marketing network includes a first carrier frequency band, the operating frequency band of the power distribution network includes the first carrier frequency band and a second carrier frequency band, and the specified frequency band overlaps the first carrier frequency band; the setting the working frequency band of the radio frequency transceiver as the specified frequency band comprises the following steps:

After the power distribution network completes networking, if the current working frequency band of the power distribution network is the second carrier frequency band in the current beacon period, setting the working frequency band of the radio frequency receiving and transmitting equipment as a designated frequency band.

In one embodiment, the radio frequency transceiver is further configured to perform inter-frequency monitoring on a network packet, where the packet monitoring result includes an inter-frequency monitoring result; and before the power distribution network is controlled to work in the designated frequency band if the message monitoring result shows that the target type message is not monitored, the method further comprises:

updating a target beacon frame of the next beacon period;

and if the message monitoring result indicates that the target type message is not monitored, controlling the power distribution network to work in the designated frequency band, including:

If the inter-frequency monitoring result shows that the target type message is not monitored in the specified number of monitoring periods, controlling the working frequency band of the power distribution network to be switched from the second carrier frequency band to the specified frequency band according to the target beacon frame; and in the process of the different frequency monitoring, the power distribution network is in a service suspension state.

In one embodiment, the updating the target beacon frame of the next beacon period includes:

Updating a frequency band notification entry of a target beacon frame of the next beacon period; wherein the band notification entry points to the specified band.

In one embodiment, the method further comprises:

and if the inter-frequency monitoring result shows that the target type message is monitored in the specified number of monitoring periods, maintaining the target beacon frame of the next beacon period unchanged, so that the power distribution network continues to work in the second carrier frequency band.

In one embodiment, the target beacon frame further carries a remaining time for implementing frequency band switching on a current working frequency band of the power distribution network; the method further comprises the steps of:

And under the condition that the residual time is reached, controlling the working frequency band of the power distribution network to be switched to the appointed frequency band from the second carrier frequency band.

In one embodiment, the operating frequency band of the marketing network includes a first carrier frequency band, the operating frequency band of the power distribution network includes the first carrier frequency band, and the designated frequency band overlaps the first carrier frequency band; the method further comprises the steps of:

after the power distribution network completes networking, if the current working frequency band of the power distribution network is the first carrier frequency band in the current beacon period, and the message monitoring result shows that the target type message is not monitored, maintaining the target beacon frame of the next beacon period unchanged, so that the power distribution network continues to work in the first carrier frequency band.

In one embodiment, the operating frequency band of the marketing network includes a first carrier frequency band, the operating frequency band of the power distribution network includes the first carrier frequency band and a second carrier frequency band, and the specified frequency band overlaps the first carrier frequency band; the method further comprises the steps of:

After the power distribution network finishes networking, if the current working frequency band of the power distribution network is the first carrier frequency band in the current beacon period, and the message monitoring result shows that the target type message is monitored, updating the target beacon frame of the next beacon period so as to switch the working frequency band of the power distribution network from the first carrier frequency band to the second carrier frequency band.

In one embodiment, if the message monitoring result indicates that the target type message is not monitored, controlling the power distribution network to work in the specified frequency band further includes:

and in the networking process of the power distribution network, if the message monitoring result shows that the target type message is not monitored, controlling the power distribution network to be networked in the designated frequency band.

In one embodiment, the method further comprises:

And in the networking process of the power distribution network, if the message monitoring result shows that the message from the target type is monitored, controlling the power distribution network to be networked in the second carrier frequency band.

In one embodiment, the power communication network is based on high-speed power line carrier communication HPLC technology, the network message includes an inter-network coordination frame, the inter-network coordination frame includes a network type field, and the network type field is used to indicate that the inter-network coordination frame is from the marketing network or the distribution network; the determining the message monitoring result of the radio frequency transceiver according to the network type carried in the monitored network message includes:

if the values of the network type fields monitored in the specified number of monitoring periods are all the first values, obtaining a message monitoring result of the target type message which is not monitored;

if the value of the network type field monitored in the specified number of monitoring periods comprises a second value, obtaining a message monitoring result of the target type message; wherein the first value is different from the second value.

The embodiment of the specification provides an operating frequency band determining device which is applied to a central coordinator of a power communication network, wherein a power distribution network has a coexisting marketing network; the device comprises:

The appointed frequency band setting module is used for setting the working frequency band of the radio frequency transceiver to be an appointed frequency band; the radio frequency receiving and transmitting equipment is used for monitoring the frequency point of the network message, and the designated frequency band is overlapped with the working frequency band of the marketing network;

The monitoring result determining module is used for determining a message monitoring result of the radio frequency transceiver according to the network type carried in the monitored network message; wherein the network type is used for indicating that the network message comes from the marketing network or the power distribution network;

The working frequency band determining module is used for controlling the power distribution network to work in the designated frequency band if the message monitoring result indicates that the target type message is not monitored; wherein the target type message is a network message from the marketing network.

In one embodiment, the operating frequency band of the marketing network includes a first carrier frequency band, the operating frequency band of the power distribution network includes the first carrier frequency band and a second carrier frequency band, and the specified frequency band overlaps the first carrier frequency band; the specified frequency band setting module is further configured to set an operating frequency band of the radio frequency transceiver device as a specified frequency band if a current operating frequency band of the power distribution network is the second carrier frequency band in a current beacon period after the power distribution network completes networking.

In one embodiment, the radio frequency transceiver is further configured to perform inter-frequency monitoring on a network packet, where the packet monitoring result includes an inter-frequency monitoring result; the message monitoring result comprises a pilot frequency monitoring result; if the message monitoring result shows that the target type message is not monitored, controlling the power distribution network to work in the designated frequency band, and updating a target beacon frame of the next beacon period; the working frequency band determining module is further configured to control, according to the target beacon frame, the working frequency band of the power distribution network to be switched from the second carrier frequency band to the specified frequency band if the inter-frequency monitoring result indicates that the target type message is not monitored in the specified number of monitoring periods; and in the process of the different frequency monitoring, the power distribution network is in a service suspension state.

In one embodiment, the working frequency band determining module is further configured to, if the different frequency monitoring result indicates that the target type message is monitored in the specified number of monitoring periods, maintain a target beacon frame of a next beacon period unchanged, so that the power distribution network continues to work in the second carrier frequency band.

In one embodiment, the operating frequency band of the marketing network includes a first carrier frequency band, the operating frequency band of the power distribution network includes the first carrier frequency band, and the designated frequency band overlaps the first carrier frequency band; and the working frequency band determining module is further configured to, after the power distribution network completes networking, if the current working frequency band of the power distribution network is the first carrier frequency band in the current beacon period, and the message monitoring result indicates that the target type message is not monitored, and maintain the target beacon frame of the next beacon period unchanged, so that the power distribution network continues to work in the first carrier frequency band.

In one embodiment, the operating frequency band of the marketing network includes a first carrier frequency band, the operating frequency band of the power distribution network includes the first carrier frequency band and a second carrier frequency band, and the specified frequency band overlaps the first carrier frequency band; and the working frequency band determining module is further configured to, after the power distribution network completes networking, update a target beacon frame of a next beacon period if the current working frequency band of the power distribution network is the first carrier frequency band in the current beacon period, and the message monitoring result indicates that the target type message is monitored, so that the working frequency band of the power distribution network is switched from the first carrier frequency band to the second carrier frequency band.

The present specification embodiment provides a central coordinator including: a transceiver, a processor and a memory, the memory being for storing a computer program, the processor invoking the computer program for performing the method according to any of the embodiments described above.

The present description provides a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps of the method according to any of the above embodiments.

The present description provides a computer program product comprising instructions which, when executed by a processor of a computer device, enable the computer device to perform the steps of the method of any one of the embodiments described above.

The present description provides a chip comprising a storage unit storing a computer program and a processing unit implementing the steps of the method according to any of the preceding embodiments when the computer program is executed.

In the above-described embodiments, the operating band determining method is applied to a central coordinator of an electric power communication network in which a distribution network has a marketing network that coexist. The radio frequency transceiver is used for monitoring the frequency point of the network message, and firstly, the working frequency band of the radio frequency transceiver is set to be a specified frequency band overlapped with the working frequency band of the marketing network; then determining a message monitoring result of the radio frequency transceiver according to the network type carried in the monitored network message and used for indicating that the network message comes from the marketing network or the distribution network; and finally, if the message monitoring result shows that the network message from the marketing network is not monitored, controlling the power distribution network to work in the appointed frequency band. The frequency division multiplexing is realized on the communication capacity in a power distribution network active detection mode, so that the utilization rate of communication resources is effectively improved, and the occurrence probability problems of frequency band use conflicts, network connection, meter reading quality reduction and the like are reduced.

Drawings

Fig. 1a is a schematic diagram of a power distribution network according to an embodiment of the present disclosure during a network access phase;

fig. 1b is a schematic diagram of an HPLC frequency point of a marketing network after the distribution network provided in the embodiment of the present disclosure is completed to form a network;

fig. 1c is a schematic diagram of an HPLC frequency point of a power distribution network according to an embodiment of the present disclosure after the power distribution network is completed to form a network;

Fig. 1d is a schematic flow chart of a method for determining an operating frequency band according to an embodiment of the present disclosure;

Fig. 2 is a schematic flow chart of controlling a power distribution network to operate in a specified frequency band according to an embodiment of the present disclosure;

Fig. 3 is a schematic diagram of an operating frequency band determining apparatus according to an embodiment of the present disclosure;

Fig. 4 is a schematic diagram of a chip according to an embodiment of the present disclosure.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

The national network company provides a 'cloud management side end' technical architecture, wherein a 'management' layer is used as a data transmission channel of a 'cloud, a side and an end' of the power distribution Internet of things, and is used for bearing various services of the power distribution Internet of things and is an important content in the construction of the power distribution Internet of things. The "pipe" layer adopts the technical architecture of "remote communication network+local communication network".

The telecommunication access network refers to a communication access network in which an end service terminal (such as a sensor, a meter, a DTU, an electric car charging pile, etc.) or an edge convergence terminal (such as a concentrator, an edge internet of things proxy device, a transmission line state monitoring proxy, etc.) is directly connected with a backbone communication network. The remote communication access network mainly adopts optical fiber communication, wireless public network communication, wireless private network communication and the like, and mainly meets the communication requirements of high reliability, low time delay and differentiation between the power distribution cloud platform and the edge computing terminal.

The local communication access network refers to a communication access network in which an end service terminal is connected with an edge convergence terminal, and mainly adopts a voltage power line carrier, micropower wireless communication, a local Ethernet, serial communication and the like to meet the requirements of reliable transmission and communication of service data between an edge computing terminal and low-voltage intelligent equipment. Along with the promotion of the construction of the distribution internet of things, the construction of the fusion terminal is of a first scale, the cloud platform also has realized basic functions, and the low-voltage intelligent equipment also has formed products. But there is a factor restricting the development of the internet of things for power distribution in the aspect of local communication.

In the related art, the existing local communication technologies of the marketing network mainly include high-speed power line carrier communication (HPLC), micro-power wireless (RF), wireless intelligent sensor network (Wi-SUN RF), hplc+rf dual-mode communication, and other communication modes.

The local communication mode of the distribution network can adopt the local communication technical scheme of the marketing network under the condition that unified standards are not specified. The single-head-end area can be considered, unified access of all equipment in the area is realized through the area intelligent fusion terminal, the intelligent circuit breaker, the photovoltaic switch and other distribution type end equipment and marketing type end equipment are included, the distribution and marketing application requirements are met by deploying different types of application APP in the area intelligent fusion terminal, the local communication management APP interacts with the end equipment, and a message priority management mechanism is formulated.

In the related art, the marketing network is deployed on the HPLC network, and the power distribution network and the marketing network coexist in a frequency division or same frequency mode. When the distribution network and the marketing network are in the same frequency, the carrier protocol prescribes a multi-subnet bandwidth coordination mechanism to realize the interleaving of each subnet beacon time slot area on the time axis.

However, when the power distribution network and the marketing network are in the same frequency, the power distribution network is affected by the problem of a typical hidden terminal of the multi-hop network, and the multi-subnet bandwidth coordination mechanism can solve the interference between different subnet beacon signals, but can not effectively solve the problem that one subnet beacon signal transmission process is interfered by other subnets and non-beacon signals, and the transmission effect of the beacon signals is greatly affected under the condition of high network traffic load. Because the distribution network and the marketing network are staggered with respect to each other, inter-network coordination is complex.

Under the scene that the distribution network and the marketing network cannot co-frequency coexistence networking coordinate, a new distribution network frequency point can be configured. The distribution network adopts an active detection mode, so that the distribution network works in the marketing network HPLC frequency point preferentially. And if the marketing network HPLC frequency points exist in the marketing network, the power distribution network actively dodges to the power distribution network frequency points. The distribution network frequency point has higher frequency and larger interference, and under the condition that the marketing network interference disappears, the distribution network frequency point preferentially returns to the marketing network HPLC frequency point to carry out networking work.

Based on this, the present embodiment provides a method for determining an operating frequency band. The operating frequency band determining method is applied to a central coordinator of a power communication network in which a power distribution network has a co-existing marketing network. The radio frequency transceiver is used for monitoring the frequency point of the network message, and firstly, the working frequency band of the radio frequency transceiver is set to be a specified frequency band overlapped with the working frequency band of the marketing network; then determining a message monitoring result of the radio frequency transceiver according to the network type carried in the monitored network message and used for indicating that the network message comes from the marketing network or the distribution network; and finally, if the message monitoring result shows that the network message from the marketing network is not monitored, controlling the power distribution network to work in the appointed frequency band. The power distribution network adopts an active detection mode to realize frequency division multiplexing on the communication capability, thereby effectively improving the utilization rate of communication resources and reducing the occurrence probability of events such as use conflict of frequency bands, network connection, meter reading quality reduction and the like.

The method provided by the embodiment of the specification can be applied to a central coordinator of a power communication network in which a power distribution network has a marketing network coexisting. The high-speed power line carrier communication (HPLC) operating frequency range includes 4 frequency bands: band 0:2MHz to 12MHz, band 1:2.4MHz to 5.6MHz, band 2:0.7MHz to 3MHz, band 3:1.7MHz to 3MHz. HPLC can provide data transmission rates of several hundred kbps to several Mbps, and power line noise in a high frequency band is relatively weak, and compared with narrowband power line communication, communication reliability and stability of HPLC are significantly improved. If the power distribution network works with the frequency band 1, the attenuation of the high frequency band of the frequency band 1 is large, and the power distribution network cannot be suitable for all the areas. The two frequency bands work simultaneously on the same line, out-of-band leakage can affect each other, and in-band interference can be formed in a station area with large site individual noise.

The actual field use mainly uses frequency band 2 as a main part, and a station area with large interference to noise can be switched to frequency band 1. In the scenario that the power distribution network and the marketing network cannot co-exist and coordinate in a networking mode, in order to complete frequency division, the power distribution network central coordinator can be provided with radio frequency transceiver equipment corresponding to the power distribution network frequency points, and the radio frequency transceiver equipment corresponding to the marketing network frequency points.

Marketing network HPLC bands may include band 0:2MHz to 12MHz, band 1:2.4MHz to 5.6MHz, band 2:0.7MHz to 3MHz, band 3:1.7MHz to 3MHz. The HPLC frequency band of the distribution network can be obtained by expanding the HPLC frequency band of the marketing network on the basis of keeping the HPLC frequency band unchanged. The power distribution network HPLC bands may include band 4:3.4MHz to 5.6MHz, band 5:0.8MHz to 1.9MHz, band 6:0.7MHz to 1.4MHz.

Referring to fig. 1a, during the network entry phase, the central coordinator of the power distribution network is started. The radio frequency transceiver device of the central coordinator of the distribution network can be arranged in the marketing network HPLC frequency band. The radio frequency transceiver device listens for inter-network coordination frames including a network type field in the marketing network HPLC band. If the radio frequency transceiver device does not monitor the inter-network coordination frame from the marketing network in the marketing network HPLC frequency band within a period of time (such as 10 s), the central coordinator of the power distribution network performs networking in the marketing network HPLC frequency band. If the radio frequency transceiver device monitors the inter-network coordination frame from the marketing network in the marketing network HPLC frequency band for a period of time (e.g. 10 s), the central coordinator of the power distribution network performs networking in the power distribution network HPLC frequency band where there is no overlapping portion with the marketing network HPLC frequency band.

Referring to fig. 1b, after the power distribution network completes networking, if the power distribution network currently works in the marketing network HPLC band, the radio frequency transceiver device performs frequency point monitoring on the marketing network HPLC band. If the radio frequency transceiver equipment monitors the inter-network coordination frame from the marketing network in the HPLC frequency band of the marketing network, the central coordinator of the power distribution network updates the frequency band notification entry of the next beacon period. The target frequency band of the frequency band notification entry of the next beacon period is updated to the power distribution network HPLC frequency band, and the frequency band switching remaining time field of the frequency band notification entry of the next beacon period is the remaining time for implementing the switching to the power distribution network HPLC frequency band. And under the condition that the residual time is reached, switching the working frequency band of the power distribution network from the HPLC frequency band of the marketing network to the HPLC frequency band of the power distribution network, and networking the central coordinator of the power distribution network in the HPLC frequency band of the power distribution network. Other Stations (STAs) switch to the HPLC band of the distribution network to communicate with the central coordinator of the distribution network. If the radio frequency transceiver device does not monitor the inter-network coordination frame from the marketing network in the marketing network HPLC frequency band, the power distribution network can continue to work in the marketing network HPLC frequency band.

Referring to fig. 1c, after the power distribution network completes networking, if the power distribution network currently works in the HPLC band of the power distribution network, the radio frequency transceiver device periodically monitors the HPLC band of the marketing network. If the radio frequency transceiver device does not monitor the inter-network coordination frame from the marketing network in N continuous monitoring periods of the HPLC frequency band of the marketing network, the central coordinator of the power distribution network updates the frequency band notification entry of the next beacon period. The target frequency band of the frequency band notification entry of the next beacon period is updated to the marketing network HPLC frequency band, and the frequency band switching remaining time field of the frequency band notification entry of the next beacon period is the remaining time for implementing the switching to the marketing network HPLC frequency band. And under the condition that the residual time is reached, switching the working frequency band of the power distribution network from the HPLC frequency band of the power distribution network to the HPLC frequency band of the marketing network, and networking the central coordinator of the power distribution network in the HPLC frequency band of the marketing network. Other Stations (STAs) switch to the marketing network HPLC band for communication with the distribution network central coordinator. If the radio frequency transceiver device monitors the inter-network coordination frame from the marketing network in the HPLC frequency band of the marketing network, the power distribution network can continue to work in the HPLC frequency band of the power distribution network.

The embodiment of the specification provides an operating frequency band determining method which is applied to a central coordinator of an electric power communication network, wherein a distribution network has a coexisting marketing network. Referring to fig. 1d, the method may include the steps of:

S110, setting the working frequency band of the radio frequency transceiver as a specified frequency band.

S120, determining a message monitoring result of the radio frequency transceiver according to the network type carried in the monitored network message.

S130, if the message monitoring result shows that the target type message is not monitored, controlling the power distribution network to work in the designated frequency band.

The radio frequency receiving and transmitting equipment is used for carrying out frequency point monitoring on the network message. The radio frequency transceiver device comprises a radio frequency receiving device and a radio frequency transmitting device, and the radio frequency transceiver device can be arranged in the central coordinator. Each frequency band of the distribution network corresponds to radio frequency transceiver equipment, and each frequency band of the marketing network corresponds to radio frequency transceiver equipment. The power distribution network may refer to a network system that delivers power from a power transmission system to end users. The power distribution network may include a medium voltage power distribution system and a low voltage power distribution system between the power transmission system and the user. The marketing network may be a specialized wireless communication network established in wireless communication generally indicating a particular market demand. The designated frequency band may overlap with the operating frequency band of the marketing network. Such as: the operating frequency band of the marketing network may be 0.7MHz to 3MHz, the designated frequency band may be 2.4MHz to 5.6MHz, and there is an overlap of 2.4MHz to 3MHz between the two. The designated frequency band can also be the operating frequency band of the marketing network directly. The network type is used to indicate that the network message is from a marketing network or a distribution network. The network message may be a message carrying a network type, for example, the network message may be carrier frequency band information including a network type field, and may be a heartbeat message including a network type field. The target type message is a network message from the marketing network.

Specifically, the working frequency band of the radio frequency transceiver is set to be a specified frequency band, and the radio frequency transceiver monitors network messages in the specified frequency band. After the radio frequency transceiver device monitors the network message, the monitored network message is analyzed, and the network type carried by the network message can be determined. And determining a message monitoring result of the radio frequency receiving and transmitting equipment according to the network type carried in the monitored network message. If the message monitoring result shows that the radio frequency receiving and transmitting equipment does not monitor the network message from the marketing network, namely the target type message, on the designated frequency band, the designated frequency band is indicated to allow the power distribution network to use, and the power distribution network does not need to avoid the marketing network, so that the working frequency band of the power distribution network can be adjusted to the designated frequency band. In this embodiment, if the power distribution network works in the current frequency band that does not overlap with the working frequency band of the marketing network, the radio frequency transceiver device monitors the specified frequency band in different frequencies, so that the power distribution network can be controlled to work in the specified frequency band from the current frequency band that does not overlap with the working frequency band of the marketing network to the specified frequency band that overlaps with the working frequency band of the marketing network without monitoring the target type message.

In this embodiment, if the current frequency band of the power distribution network is a specified frequency band, the specified frequency band overlaps with the operating frequency band of the marketing network. The frequency point monitoring is carried out on the appointed frequency band through the radio frequency transceiver equipment so as to judge whether the distribution network needs to avoid the marketing network. For example, in the case that the target type message is not monitored, the power distribution network may continue to operate in a specified frequency band overlapping with the operating frequency band of the marketing network, i.e. the power distribution network is controlled to operate in the specified frequency band.

In the above embodiment, the operating frequency band determining method is applied to the central coordinator of the power communication network in which the distribution network has the marketing network coexisting. The radio frequency transceiver is used for monitoring the frequency point of the network message, and firstly, the working frequency band of the radio frequency transceiver is set to be a specified frequency band overlapped with the working frequency band of the marketing network; then determining a message monitoring result of the radio frequency transceiver according to the network type carried in the monitored network message and used for indicating that the network message comes from the marketing network or the distribution network; and finally, if the message monitoring result shows that the network message from the marketing network is not monitored, controlling the power distribution network to work in the appointed frequency band. The frequency division multiplexing is realized on the communication capacity in a power distribution network active detection mode, so that the utilization rate of communication resources is effectively improved, and the occurrence probability problems of frequency band use conflicts, network connection, meter reading quality reduction and the like are reduced.

In some embodiments, the operating frequency band of the marketing network includes a first carrier frequency band, the operating frequency band of the power distribution network includes a first carrier frequency band and a second carrier frequency band, and the designated frequency band overlaps the first carrier frequency band; setting the working frequency band of the radio frequency transceiver device to be a specified frequency band may include: after the power distribution network completes networking, if the current working frequency band of the power distribution network is the second carrier frequency band in the current beacon period, setting the working frequency band of the radio frequency receiving and transmitting equipment as the appointed frequency band.

The first carrier frequency band may be a default carrier frequency band of high-speed power line carrier communication (HPLC), and the default carrier frequency band may include frequency band 0, frequency band 1, frequency band 2, and frequency band 3. The range of band 0 may be 2.0MHz to 12MHz, the range of band 1 may be 2.4MHz to 5.6MHz, the range of band 2 may be 0.7MHz to 3.0MHz, and the range of band 3 may be 1.7MHz to 3.0MHz. The second carrier frequency band may be an extended carrier frequency band obtained by extending a frequency band of high-speed power line carrier communication (HPLC) on the basis of maintaining a default carrier frequency band of the high-speed power line carrier communication unchanged. The extension carrier frequency bands may include frequency band 4, frequency band 5, and frequency band 6. The range of band 4 may be 3.4MHz to 5.6MHz, the range of band 5 may be 0.8MHz to 1.9MHz, and the range of band 6 may be 0.7MHz to 1.4MHz. There is no overlapping frequency between band 0 and band 6, there is no overlapping frequency between band 1 and band 5, there is no overlapping frequency between band 2 and band 4, there is no overlapping frequency between band 3 and band 4. The beacon period may refer to a time interval or frequency of beacon transmission in wireless communication. Beacons may be special signals transmitted by a base station or network device at fixed time intervals for synchronizing and timing the operation of other devices.

In some cases, the marketing network and the distribution network communicate with other devices by adopting non-overlapping HPLC frequency bands, signals do not generate interference, and communication avoidance is carried out between the marketing network and the distribution network. The HPLC default band (first carrier band) is typically well studied and standardized and therefore may face less interference in that band. The default band generally has better transmission characteristics, resulting in a longer transmission distance. The equipment popularity of the default frequency band is higher, and suitable modems, filters, amplifiers and other equipment are more easily obtained in the market, and the system integration and deployment are also easier. Selecting the default frequency band may reduce equipment costs and reduce complexity of system design and maintenance compared to the HPLC extension frequency band (second carrier frequency band). This is very beneficial for application scenarios where communication over long distances is required. Therefore, if the current working frequency band of the power distribution network is the second carrier frequency band in the current beacon period, the working frequency band of the radio frequency transceiver device can be set as a default frequency band.

Specifically, the frequency of the working frequency band of the power distribution network is higher, and the signal interference is larger. After the power distribution network completes networking, the power distribution network can select an optimal frequency band to switch the frequency band according to the actual frequency band use condition. If the current working frequency band of the power distribution network is the second carrier frequency band in the current beacon period, the first carrier frequency band which does not have an overlapping part with the second carrier frequency band of the current working frequency band of the power distribution network can be determined to be the appointed frequency band, and then the working frequency band of the radio frequency transceiver is adjusted to the appointed frequency band so as to realize the active detection of the power distribution network.

Illustratively, the second carrier frequency band may be 3.4MHz to 5.6MHz, and the designated frequency band may be 0.7MHz to 3.0MHz. After the power distribution network completes networking, if the current working frequency band of the power distribution network in the current beacon period is 3.4MHz to 5.6MHz of the second carrier frequency band. The operating frequency band of the radio frequency transceiver device may be adjusted to a specified frequency band of 0.7MHz to 3.0MHz, where no overlap exists with the second carrier frequency band.

In the above embodiment, after the power distribution network completes networking, if the current working frequency band of the power distribution network is the second carrier frequency band in the current beacon period, the working frequency band of the radio frequency transceiver is set as the designated frequency band, so as to realize active detection of the power distribution network.

In some embodiments, the radio frequency transceiver is further configured to monitor a network packet, where the packet monitoring result includes an inter-frequency monitoring result. Referring to fig. 2, before controlling the power distribution network to operate in the designated frequency band if the message monitoring result indicates that the target type message is not monitored, the method may include the following steps:

S210, updating the target beacon frame of the next beacon period.

If the message monitoring result shows that the target type message is not monitored, controlling the power distribution network to work in the designated frequency band comprises the following steps:

S220, if the inter-frequency monitoring result shows that the target type message is not monitored in the specified number of monitoring periods, controlling the working frequency band of the power distribution network to be switched from the second carrier frequency band to the specified frequency band according to the target beacon frame; during the different frequency monitoring process, the power distribution network is in a service suspension state.

The beacon frame may be a special management frame sent by the central coordinator to convey network-related information to the devices. Different frequency monitoring may refer to the process of scanning and monitoring different frequency channels in wireless communications. The inter-frequency monitoring may be used to determine the channels available in the current environment and find the best channel to communicate. The monitoring period may refer to the time interval during which one complete scan and evaluation is performed during the inter-frequency monitoring. The monitoring period may be determined according to specific requirements and system requirements, for example, the monitoring period may be 10s, and may be 15s.

In some cases, in order to ensure the safety and reliability of the frequency band switching process, the power distribution network is in a service suspension state during the different frequency monitoring process.

Specifically, after the power distribution network completes networking, the current working frequency band of the power distribution network is a second carrier frequency band, and the working frequency band of the radio frequency transceiver is adjusted to be a specified frequency band. And the radio frequency receiving and transmitting equipment monitors different frequencies of a specified frequency band for a certain time length in each monitoring period. During the different frequency monitoring process, the power distribution network is in a service suspension state. The radio frequency receiving and transmitting equipment monitors the network message of the specified frequency band to realize different frequency monitoring of the specified frequency band. If the different frequency monitoring result shows that the radio frequency receiving and transmitting equipment does not monitor the network message from the marketing network, namely the target type message, all the time in the specified frequency band in the specified number of monitoring periods, the marketing network signal which interferes with the distribution network can be considered to be absent in the specified frequency band. The central coordinator of the power distribution network may update the target beacon frame of the next beacon period. The working frequency band of the power distribution network in the next beacon period is switched to the appointed frequency band by the second carrier frequency band, and a central coordinator of the power distribution network performs networking in the appointed frequency band. And other Stations (STA) and equipment are switched to a specified frequency band to communicate with the central coordinator of the power distribution network according to the target beacon frame. The monitoring period of the inter-frequency monitoring may be set to be an integer multiple of the beacon period, and the time length of the inter-frequency monitoring may be set to be an integer multiple of the beacon slot length.

The designated frequency band may be, for example, 0.7MHz to 3MHz. The current operating frequency band of the power distribution network, i.e. the second carrier frequency band, may be 3.4MHz to 5.6MHz. HPLC employs a fixed slot length, one beacon period length may be 5s, and each slot length may be 10ms. The beacon slot is currently 180 slots, the remainder being CSMA slots. The monitoring period of the inter-frequency monitoring may be set to 10s, the time length of the inter-frequency monitoring may be set to 20ms to 40ms, and in this embodiment, the time length of the inter-frequency monitoring may be set to 20ms. After the power distribution network is networked, if the current work of the power distribution network is 3.4MHz to 5.6MHz of the second carrier frequency band, the radio frequency transceiver device can be adjusted to the appointed frequency band of 0.7MHz to 3MHz every 10s, and the different frequency monitoring of 20ms is carried out on the appointed frequency band of 0.7MHz to 3MHz. During the 20ms off-frequency monitoring, the power distribution network is in a service suspension state. If the radio frequency transceiver device does not monitor network messages from the marketing network all the time within the specified frequency range of 0.7MHz to 3MHz in 3 continuous monitoring periods, the central coordinator of the power distribution network updates the target beacon frame of the next beacon period. In the next beacon period, the working frequency band of the power distribution network is switched to the appointed frequency band from 3.4MHz to 5.6MHz of the second carrier frequency band, and the central coordinator of the power distribution network performs networking in the appointed frequency band from 0.7MHz to 3MHz. And other stations and equipment are switched to the designated frequency band of 0.7MHz to 3MHz according to the target beacon frame to communicate with the central coordinator of the power distribution network.

In the above embodiment, the target beacon frame of the next beacon period is updated. If the different frequency monitoring result shows that the target type message is not monitored in the specified number of monitoring periods, the working frequency band of the power distribution network is controlled to be switched from the second carrier frequency band to the specified frequency band according to the target beacon frame, so that the safety and stability of the operation of the power distribution network can be ensured.

In some embodiments, updating the target beacon frame for the next beacon period includes: and updating the frequency band notification entry of the target beacon frame of the next beacon period.

Wherein the band notification entry points to a specified band. The band notification entry of the target beacon frame also carries the remaining time for the power distribution network to perform band switching on the current operating band.

For example, referring to table 1, table 1 is a partial field of a band notification entry. The target frequency band in table 1 may be the frequency band to which the next beacon period needs to be switched. Such as: when the next period needs to switch to band 2, the target band may be set to 0x02. The remaining time of the band switching in table 1 may be a length of time remaining from the implementation of the band switching when updating the target beacon frame of the next period.

Table 1: part of the field of the band announcement entry:

In the above embodiment, the frequency band notification entry of the target beacon frame of the next beacon period is updated, so that the working frequency band of the power distribution network of the next beacon period can be accurately calculated.

In some embodiments, the method may further comprise: if the inter-frequency monitoring result shows that the target type message is monitored in the specified number of monitoring periods, maintaining the target beacon frame of the next beacon period unchanged, so that the power distribution network continues to work in the second carrier frequency band.

Specifically, after the power distribution network completes networking, the current working frequency band of the power distribution network is a second carrier frequency band, and the working frequency band of the radio frequency transceiver is adjusted to be a specified frequency band. And the radio frequency receiving and transmitting equipment monitors different frequencies of a specified frequency band for a certain time length in each monitoring period. During the different frequency monitoring process, the power distribution network is in a service suspension state. The radio frequency receiving and transmitting equipment monitors the network message of the specified frequency band to realize different frequency monitoring of the specified frequency band. If the different frequency monitoring result shows that the network message from the marketing network, namely the target type message, is monitored in the specified number of monitoring periods, the marketing network signal which interferes with the distribution network can be considered to exist in the specified frequency band. The central coordinator of the power distribution network maintains the target beacon frame of the next beacon period unchanged. The power distribution network continues to operate in the second carrier frequency band. Other Stations (STAs) and devices continue to communicate with the central coordinator of the power distribution network in the second carrier frequency band according to the target beacon frame. The monitoring period of the inter-frequency monitoring may be set to be an integer multiple of the beacon period, and the time length of the inter-frequency monitoring may be set to be an integer multiple of the beacon slot length.

Illustratively, after the power distribution network completes the networking, if the power distribution network operates in the second carrier frequency band of 3.4MHz to 5.6MHz, the radio frequency transceiver device may be adjusted to the specified frequency band of 0.7MHz to 3MHz every 10s, and the specified frequency band of 0.7MHz to 3MHz may be monitored for 20 ms. During the 20ms off-frequency monitoring, the power distribution network is in a service suspension state. If the radio frequency transceiver device monitors the network message from the marketing network in the designated frequency band at any time point of the 3 monitoring periods, the central coordinator of the power distribution network maintains the target beacon frame of the next beacon period unchanged, so that the power distribution network continues to work in the second carrier frequency band of 3.4MHz to 5.6MHz. And the other stations and the equipment continue to communicate with the central coordinator of the power distribution network in the second carrier frequency range of 3.4MHz to 5.6MHz according to the target beacon frame.

In the above embodiment, if the inter-frequency monitoring result indicates that the target type message is monitored in the specified number of monitoring periods, the target beacon frame of the next beacon period is maintained unchanged, so that the power distribution network continues to work in the second carrier frequency band, and the probability of frequency band collision is reduced.

In some embodiments, the target beacon frame also carries the remaining time for the power distribution network to perform a band switch over the current operating band. The method further comprises the steps of: and under the condition that the residual time is reached, controlling the working frequency band of the power distribution network to be switched to the appointed frequency band from the second carrier frequency band.

Specifically, after updating the target beacon frame of the next beacon period, the switching of the working frequency band is realized according to the remaining time of the implementation of the frequency band switching on the current working frequency band of the power distribution network carried by the target beacon frame. And under the condition that the residual time is reached, the working frequency band of the power distribution network is switched to the appointed frequency band by the second carrier frequency band, and the central coordinator of the power distribution network performs networking in the appointed frequency band. Other Stations (STAs), devices switch to a designated frequency band to communicate with the central coordinator of the power distribution network.

Illustratively, the designated frequency band may be 0.7MHz to 3MHz and the second carrier frequency band may be 3.4MHz to 5.6MHz. From the target beacon frame, it can be determined that the remaining time of the band switching is 10ms. Under the condition that the residual time is reached after 10ms, the working frequency band of the power distribution network is switched from the second carrier frequency band of 3.4MHz to 5.6MHz to the appointed frequency band of 0.7MHz to 3MHz, and the central coordinator of the power distribution network performs networking on the appointed frequency band of 0.7MHz to 3 MHz. Other Stations (STA) and equipment are switched to the specified frequency range of 0.7MHz to 3MHz to communicate with a central coordinator of the power distribution network.

In the above embodiment, the switching of the frequency band of the whole network can be realized under the condition that the remaining time is reached, so that the device can be switched to the designated frequency band for communication.

In some embodiments, the radio frequency transceiver device is configured to monitor a network message. The working frequency band of the marketing network comprises a first carrier frequency band, the working frequency band of the power distribution network comprises a first carrier frequency band, and the designated frequency band is overlapped with the first carrier frequency band. The method may further comprise:

After the power distribution network completes networking, if the current working frequency band of the power distribution network is the first carrier frequency band in the current beacon period, and the message monitoring result shows that the target type message is not monitored, the target beacon frame of the next beacon period is maintained unchanged, so that the power distribution network continues to work in the first carrier frequency band.

Specifically, after the power distribution network completes networking, if the current working frequency band of the power distribution network is the first carrier frequency band in the current beacon period, it can be considered that the power distribution network has no signal interference of the marketing network before the first carrier frequency band performs networking. The radio frequency receiving and transmitting equipment monitors the frequency point of the first carrier frequency band. If the radio frequency transceiver device does not monitor the network message from the marketing network, i.e. the target type message, in the first carrier frequency band, it can be considered that there is no marketing network signal interfering with the distribution network in the first carrier frequency band. The central coordinator of the power distribution network maintains the target beacon frame of the next beacon period unchanged. The power distribution network continues to operate in the first carrier frequency band. Other Stations (STAs) and devices continue to communicate with the central coordinator of the power distribution network in the first carrier frequency band according to the target beacon frame.

The first carrier frequency band may be, for example, 0.7MHz to 3MHz. After the power distribution network is networked, if the power distribution network works on the first carrier frequency band of 0.7MHz to 3MHz, the power distribution network radio frequency transceiver equipment monitors the frequency point of the first carrier frequency band. If the message from the marketing network is not monitored in the first carrier frequency band, the central coordinator of the power distribution network maintains the target beacon frame of the next beacon period unchanged, so that the power distribution network continues to work in the first carrier frequency band of 0.7MHz to 3MHz. And the other stations and equipment continue to communicate with the central coordinator of the power distribution network in the first carrier frequency range of 0.7MHz to 3MHz according to the target beacon frame.

In the above embodiment, after the power distribution network completes networking, if the current working frequency band of the power distribution network is the first carrier frequency band in the current beacon period, and the message monitoring result indicates that the target type message is not monitored, the target beacon frame of the next beacon period is maintained unchanged, so that the power distribution network continues to work in the first carrier frequency band, and the safe and stable operation of the power distribution network can be ensured.

In some embodiments, the operating frequency band of the marketing network includes a first carrier frequency band, the operating frequency band of the power distribution network includes a first carrier frequency band and a second carrier frequency band, and the designated frequency band overlaps the first carrier frequency band; the method further comprises the steps of:

Specifically, after the power distribution network completes networking, if the current working frequency band of the power distribution network is the first carrier frequency band in the current beacon period, it can be considered that the power distribution network has no signal interference of the marketing network before the first carrier frequency band performs networking. If the latter marketing network wants to carry out networking in the first carrier frequency band, the latter marketing network cannot coordinate with the power distribution network, and at the moment, the power distribution network needs to actively avoid to carry out networking in a second carrier frequency band which does not have an overlapping part with the first carrier frequency band. Therefore, the radio frequency transceiver device monitors the frequency point of the first carrier frequency band. If the radio frequency transceiver device monitors a network message from the marketing network, namely a target type message, in the first carrier frequency band, the marketing network signal of the interference distribution network can be considered to exist in the first carrier frequency band. The central coordinator of the power distribution network may update the target beacon frame of the next beacon period. The working frequency band of the power distribution network in the next beacon period is switched to the designated frequency band by the first carrier frequency band, and a central coordinator of the power distribution network performs networking in the designated frequency band. And other Stations (STA) and equipment are switched to a specified frequency band to communicate with the central coordinator of the power distribution network according to the target beacon frame.

Illustratively, the first carrier frequency band may be 0.7MHz to 3MHz, the designated frequency band may be a second carrier frequency band, and the second carrier frequency band may be 3.4MHz to 5.6MHz. After the power distribution network is networked, if the power distribution network works in the first carrier frequency range of 0.7MHz to 3MHz, the radio frequency transceiver equipment monitors the frequency point of the first carrier frequency range. If the radio frequency transceiver device monitors the network message of the marketing network on the first carrier frequency band, the central coordinator of the power distribution network updates the target beacon frame of the next beacon period. The band announcement entry of the target beacon frame points to the designated band, i.e., the second carrier band. In the next beacon period, the working frequency band of the power distribution network is switched from the first carrier frequency band of 0.7MHz to 3MHz to the designated frequency band, and a central coordinator of the power distribution network performs networking at the designated frequency band of 3.4MHz to 5.6MHz. And other stations and equipment are switched to the frequency band designated by the frequency band from 3.4MHz to 5.6MHz according to the target beacon frame to communicate with the central coordinator of the power distribution network.

In the above embodiment, after the power distribution network completes networking, if the current working frequency band of the power distribution network is the first carrier frequency band in the current beacon period, and the message monitoring result indicates that the target type message is monitored, the target beacon frame of the next beacon period is updated, so that the working frequency band of the power distribution network is switched from the first carrier frequency band to the second carrier frequency band, active avoidance of the marketing network is realized, and the probability of frequency band collision is reduced.

In some embodiments, if the message monitoring result indicates that the target type message is not monitored, controlling the power distribution network to work in the designated frequency band, further includes:

Specifically, during the networking of the power distribution network, the power distribution network central coordinator is started. The radio frequency transceiver device of the central coordinator of the power distribution network can be adjusted to a specified frequency band. The radio frequency receiving and transmitting equipment monitors frequency points of the appointed frequency band. If the radio frequency transceiver device does not monitor the network message from the marketing network, i.e. the target type message, in the specified frequency band within a period of time (such as 10 s), it can be considered that the marketing network signal interfering with the distribution network does not exist in the specified frequency band. The central coordinator of the power distribution network performs networking in the designated frequency band.

The designated frequency band may be, for example, 0.7MHz to 3MHz. During the networking of the power distribution network, the central coordinator of the power distribution network is started. The radio frequency receiving and transmitting equipment of the central coordinator of the power distribution network is adjusted to the specified frequency band of 0.7MHz to 3MHz, and the radio frequency receiving and transmitting equipment monitors the frequency point of the specified frequency band of 0.7MHz to 3MHz. The system can monitor for 10s at the designated frequency band of 0.7MHz to 3MHz, and if the network message from the marketing network is not monitored at the designated frequency band of 0.7MHz to 3MHz, the central coordinator of the power distribution network performs networking at the designated frequency band of 0.7MHz to 3MHz.

In the above embodiment, in the networking process of the power distribution network, if the message monitoring result indicates that the target type message is not monitored, the power distribution network is controlled to be networking in the specified frequency band, so that the operation safety and stability of the power distribution network can be ensured.

In some embodiments, the method may further comprise: and in the networking process of the power distribution network, if the message monitoring result shows that the target type message is monitored, controlling the power distribution network to be networked in the second carrier frequency band.

Specifically, during the networking of the power distribution network, the power distribution network central coordinator is started. The radio frequency transceiver device of the central coordinator of the power distribution network can be adjusted to a specified frequency band. The radio frequency receiving and transmitting equipment monitors frequency points of the appointed frequency band. If the radio frequency transceiver device monitors the network message from the marketing network, i.e. the target type message, in the specified frequency band within a period of time (such as 10 s), it can be considered that the marketing network signal interfering with the distribution network exists in the specified frequency band. The central coordinator of the power distribution network can actively avoid the second carrier frequency band which does not have an overlapping part with the designated frequency band to carry out networking.

Illustratively, the designated frequency band may be 0.7MHz to 3MHz and the second carrier frequency band may be 3.4MHz to 5.6MHz. During the networking of the power distribution network, the central coordinator of the power distribution network is started. The radio frequency receiving and transmitting equipment of the central coordinator of the power distribution network is adjusted to the specified frequency band of 0.7MHz to 3MHz, and the radio frequency receiving and transmitting equipment monitors the frequency point of the specified frequency band of 0.7MHz to 3 MHz. The central coordinator of the power distribution network can actively avoid the network to the second carrier frequency band 3.4MHz to 5.6MHz which does not have an overlapping part with the appointed frequency band if the network message from the marketing network is monitored on the appointed frequency band 0.7MHz to 3 MHz.

In the above embodiment, in the networking process of the power distribution network, if the message monitoring result indicates that the target type message is monitored, the power distribution network is controlled to be networked in the second carrier frequency band, so that the probability of occurrence of frequency band conflict is reduced.

In some embodiments, the network message includes an inter-network coordination frame including a network type field for indicating that the inter-network coordination frame is from a marketing network or a power distribution network; determining a message monitoring result of the radio frequency transceiver according to the network type carried in the monitored network message, including:

And if the values of the network type fields monitored in the specified number of monitoring periods are all the first values, obtaining a message monitoring result of the message of which the target type is not monitored.

And if the value of the network type field monitored in the specified number of monitoring periods comprises the second value, obtaining a message monitoring result of the monitored target type message.

Wherein the first value is different from the second value. The value of the network type field may be characterized as a marketing network or as a power distribution network.

Specifically, the value of the target type message may be the second value. If the values of the network type fields of the inter-network coordination frames monitored in the specified number of monitoring periods are all the first values, the target type messages are considered to be not monitored, and the message monitoring results of the target type messages which are not monitored can be obtained.

If the value of the network type field of the inter-network coordination frame monitored in the specified number of monitoring periods comprises a second value, the target type message is considered to be monitored, and a message monitoring result of the target type message can be obtained.

For example, referring to table 2, table 2 is a partial field of an inter-network coordination frame. The network type field is represented in table 2 using 1 bit. The network type field may be used to label the distribution network or marketing network. The first value of the network type field of the inter-network coordination frame may be 0, characterized as a power distribution network; the second value may be 1, characterized as a marketing network. The target type message may be a network message from a marketing network.

If the values of the network type fields of the inter-network coordination frames monitored in the specified number of monitoring periods are all the first value 0, the network messages from the marketing network are not monitored, and a message monitoring result of the target type messages which are not monitored can be obtained.

If the value of the network type field of the inter-network coordination frame monitored in the specified number of monitoring periods comprises a second value 1, the network message from the marketing network is considered to be monitored, and a message monitoring result of the target type message is obtained.

Table 2: part of the field of the inter-network coordination frame:

In the above embodiment, according to the value of the network type field of the inter-network coordination frame, the message monitoring result of the target type message can be obtained. According to the message monitoring result, the working frequency band which is most suitable for the power distribution network at present can be selected.

Referring to fig. 3, an operating frequency band determining apparatus 300 is provided in the embodiment of the present disclosure, the operating frequency band determining apparatus 300 includes: a designated frequency band setting module 310, a monitoring result determining module 320 and an operating frequency band determining module 330.

A designated frequency band setting module 310, configured to set an operating frequency band of the radio frequency transceiver device to a designated frequency band; the radio frequency receiving and transmitting equipment is used for monitoring the frequency point of the network message, and the designated frequency band is overlapped with the working frequency band of the marketing network;

A monitoring result determining module 320, configured to determine a message monitoring result of the radio frequency transceiver according to a network type carried in the monitored network message; wherein the network type is used for indicating that the network message comes from the marketing network or the power distribution network;

The working frequency band determining module 330 is configured to control the power distribution network to work in the specified frequency band if the message monitoring result indicates that the target type message is not monitored; wherein the target type message is a network message from the marketing network.

For a specific description of the operating frequency band determining device, reference may be made to the description of the operating frequency band determining method hereinabove, and the description thereof will not be repeated here.

The present description provides a central coordinator comprising a memory and a processor, the memory storing a computer program, the processor implementing the method steps of the above embodiments when executing the computer program.

The present embodiment further provides a chip, referring to fig. 4, where the chip 400 includes a storage unit 410, a processing unit 420, and a computer program 430 stored on the storage unit 410 and capable of running on the processing unit 420, and when the processing unit 420 executes the computer program 430, the method in any of the foregoing embodiments is implemented.

The present description embodiment provides a computer-readable storage medium, on which a computer program is stored, which when executed by a processor, implements the steps of the method of any of the above embodiments.

An embodiment of the present specification provides a computer program product comprising instructions which, when executed by a processor of a computer device, enable the computer device to perform the steps of the method of any one of the embodiments described above.

It should be noted that the logic and/or steps represented in the flowcharts or otherwise described herein, for example, may be considered as a ordered listing of executable instructions for implementing logical functions, and may be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium may even be paper or other suitable medium upon which the program is printed, as the program may be electronically captured, via, for instance, optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.

Claims

1. A method of operating band determination, characterized by a central coordinator applied to an electric power communication network in which a distribution network has a coexisting marketing network; the method comprises the following steps:

2. The method of claim 1, wherein the operating frequency band of the marketing network comprises a first carrier frequency band, the operating frequency band of the power distribution network comprises the first carrier frequency band and a second carrier frequency band, and the designated frequency band overlaps the first carrier frequency band; the setting the working frequency band of the radio frequency transceiver as the specified frequency band comprises the following steps:

3. The method of claim 2, wherein the radio frequency transceiver device is further configured to perform inter-frequency monitoring on network packets, and the packet monitoring result includes an inter-frequency monitoring result; and before the power distribution network is controlled to work in the designated frequency band if the message monitoring result shows that the target type message is not monitored, the method further comprises:

updating a target beacon frame of the next beacon period;

4. A method according to claim 3, wherein said updating the target beacon frame for the next beacon period comprises:

5. A method according to claim 3, characterized in that the method further comprises:

6. A method according to claim 3, wherein the target beacon frame also carries the remaining time for the power distribution network to perform a frequency band switch over on the current operating frequency band; the method further comprises the steps of:

7. The method of claim 1, wherein the operating frequency band of the marketing network comprises a first carrier frequency band, the operating frequency band of the power distribution network comprises the first carrier frequency band, and the designated frequency band overlaps the first carrier frequency band; the method further comprises the steps of:

8. The method of claim 1, wherein the operating frequency band of the marketing network comprises a first carrier frequency band, the operating frequency band of the power distribution network comprises the first carrier frequency band and a second carrier frequency band, and the designated frequency band overlaps the first carrier frequency band; the method further comprises the steps of:

9. The method according to any one of claims 2 to 8, wherein if the message monitoring result indicates that the target type message is not monitored, controlling the power distribution network to operate in the specified frequency band further comprises:

10. The method according to claim 2, wherein the method further comprises:

11. The method of claim 1, wherein the power communication network is based on high-speed power line carrier communication HPLC technology, the network message comprising an inter-network coordination frame comprising a network type field indicating that the inter-network coordination frame is from the marketing network or the distribution network; the determining the message monitoring result of the radio frequency transceiver according to the network type carried in the monitored network message includes:

12. An operating frequency band determining device characterized by a central coordinator applied to an electric power communication network in which a distribution network has a coexisting marketing network; the device comprises:

13. The apparatus of claim 12, wherein the operating frequency band of the marketing network comprises a first carrier frequency band, the operating frequency band of the power distribution network comprises the first carrier frequency band and a second carrier frequency band, and the designated frequency band overlaps the first carrier frequency band; the specified frequency band setting module is further configured to set an operating frequency band of the radio frequency transceiver device as a specified frequency band if a current operating frequency band of the power distribution network is the second carrier frequency band in a current beacon period after the power distribution network completes networking.

14. The apparatus of claim 13, wherein the radio frequency transceiver device is further configured to perform inter-frequency monitoring on network packets, and the packet monitoring result includes an inter-frequency monitoring result; the message monitoring result comprises a pilot frequency monitoring result; if the message monitoring result shows that the target type message is not monitored, controlling the power distribution network to work in the designated frequency band, and updating a target beacon frame of the next beacon period; the working frequency band determining module is further configured to control, according to the target beacon frame, the working frequency band of the power distribution network to be switched from the second carrier frequency band to the specified frequency band if the inter-frequency monitoring result indicates that the target type message is not monitored in the specified number of monitoring periods; and in the process of the different frequency monitoring, the power distribution network is in a service suspension state.

15. The apparatus of claim 14, wherein the operating frequency band determining module is further configured to maintain a target beacon frame of a next beacon period unchanged if the inter-frequency monitoring result indicates that the target type message is monitored in the specified number of monitoring periods, so that the power distribution network continues to operate in the second carrier frequency band.

16. The apparatus of claim 12, wherein the operating frequency band of the marketing network comprises a first carrier frequency band, the operating frequency band of the power distribution network comprises the first carrier frequency band, and the designated frequency band overlaps the first carrier frequency band; and the working frequency band determining module is further configured to, after the power distribution network completes networking, if the current working frequency band of the power distribution network is the first carrier frequency band in the current beacon period, and the message monitoring result indicates that the target type message is not monitored, and maintain the target beacon frame of the next beacon period unchanged, so that the power distribution network continues to work in the first carrier frequency band.

17. The apparatus of claim 12, wherein the operating frequency band of the marketing network comprises a first carrier frequency band, the operating frequency band of the power distribution network comprises the first carrier frequency band and a second carrier frequency band, and the designated frequency band overlaps the first carrier frequency band; and the working frequency band determining module is further configured to, after the power distribution network completes networking, update a target beacon frame of a next beacon period if the current working frequency band of the power distribution network is the first carrier frequency band in the current beacon period, and the message monitoring result indicates that the target type message is monitored, so that the working frequency band of the power distribution network is switched from the first carrier frequency band to the second carrier frequency band.

18. A central coordinator comprising a transceiver, a processor and a memory, the memory for storing a computer program, the processor invoking the computer program for performing the method of any of claims 1 to 11.

19. A computer readable storage medium, characterized in that the computer readable storage medium stores a computer program which, when executed by a processor, implements the method of any one of claims 1 to 11.

20. A chip comprising a memory unit and a processing unit, the memory unit storing a computer program, characterized in that the processing unit implements the steps of the method of any of claims 1 to 11 when the computer program is executed.