CN110856232B - Relay selection and frequency distribution method and device for electric power wireless private network - Google Patents

Relay selection and frequency distribution method and device for electric power wireless private network Download PDF

Info

Publication number
CN110856232B
CN110856232B CN201911099873.1A CN201911099873A CN110856232B CN 110856232 B CN110856232 B CN 110856232B CN 201911099873 A CN201911099873 A CN 201911099873A CN 110856232 B CN110856232 B CN 110856232B
Authority
CN
China
Prior art keywords
relay
request
equipment
terminal equipment
feedback information
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201911099873.1A
Other languages
Chinese (zh)
Other versions
CN110856232A (en
Inventor
姚继明
卜宪德
刘川
陶静
刘世栋
张�浩
张刚
赵永良
李炳林
郭云飞
王玮
吴鹏
邵炜平
郑伟军
方景辉
唐锦江
杨鸿珍
汤亿则
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
State Grid Zhejiang Electric Power Co Ltd
Global Energy Interconnection Research Institute
Jiaxing Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
State Grid Zhejiang Electric Power Co Ltd
Global Energy Interconnection Research Institute
Jiaxing Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, State Grid Zhejiang Electric Power Co Ltd, Global Energy Interconnection Research Institute, Jiaxing Power Supply Co of State Grid Zhejiang Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201911099873.1A priority Critical patent/CN110856232B/en
Publication of CN110856232A publication Critical patent/CN110856232A/en
Application granted granted Critical
Publication of CN110856232B publication Critical patent/CN110856232B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H04B7/15507—Relay station based processing for cell extension or control of coverage area
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/12—Communication route or path selection, e.g. power-based or shortest path routing based on transmission quality or channel quality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a relay selection and frequency allocation method and a device for a power wireless private network, wherein the relay selection method for the power wireless private network comprises the following steps: when the service transmission requirement cannot be met, a relay request is sent to other terminal equipment within the coverage range of the base station; receiving relay feedback information sent by other terminal equipment; selecting relay equipment according to the received service request and the relay feedback information, and sending a relay access request to the relay equipment; receiving frequency resources fed back by the relay equipment according to the relay access request; and establishing relay connection with the relay equipment according to the frequency resources. The relay selection method of the electric power wireless private network provided by the invention does not take the coverage range of the base station as the only standard for selecting the relay equipment, but selects the most suitable terminal equipment from a plurality of terminal equipment to connect according to the received service request, and ensures the transmission quality during the subsequent service transmission through the relay connection established by the method.

Description

Relay selection and frequency distribution method and device for electric power wireless private network
Technical Field
The invention relates to the technical field of power system communication, in particular to a relay selection and frequency allocation method and device for a power wireless private network.
Background
With the gradual promotion of the construction of the ubiquitous power internet of things, the seamless interconnection and perception of everything are very urgent. The wireless power private network is an indispensable basic support technology for ubiquitous power internet of things, and is particularly important for realizing state perception of various information, so that the wireless power private network is required to be widely covered.
However, in consideration of economic cost, the electric wireless private network can only cover a key area, and because a shelter such as a high-rise building exists in a coverage area, signal attenuation is caused, and even in the coverage area of the wireless private network, a coverage blind spot exists, so blind compensation needs to be performed by a certain technical means so as to meet the service access requirement. For the two situations, the amplification of the base station signal can be realized by deploying the independent wireless relay equipment, so that the wider and deeper coverage of the power wireless private network is realized. However, only the relay device within the coverage of the base station is used as the unique standard for selecting the relay device, and there may still be a phenomenon of poor signal quality after the relay connection is established, so that a faster and better relay deployment mode needs to be provided for the two situations, so that service transmission can be better realized after the relay connection is completed.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is to overcome the defect in the prior art that the signal quality may still be poor after the relay connection is established, so as to provide a method and an apparatus for relay selection and frequency allocation in a power wireless private network.
The invention provides a relay selection method of a power wireless private network, which comprises the following steps: when the service transmission requirement cannot be met, a relay request is sent to other terminal equipment within the coverage range of the base station; receiving relay feedback information sent by other terminal equipment; selecting relay equipment according to the received service request and the relay feedback information, and sending a relay access request to the relay equipment; receiving frequency resources fed back by the relay equipment according to the relay access request; and establishing relay connection with the relay equipment according to the frequency resources.
Optionally, the relay feedback information includes access rights of other terminal devices, relay hops for the other terminal devices to connect to the base station, signal-to-noise ratio with the other terminal devices, signal-to-noise ratio between the other terminal devices and the base station, transmission load of the other terminal devices, and available frequency resources of the other terminal devices.
Optionally, the step of selecting the relay device according to the received service request and the relay feedback information includes: selecting a terminal equipment set with the same type as the received service request according to the access authority, wherein the type of the service request comprises a fine control service, a general control service and other common services; distributing different weighting coefficients for the relay hop count, the signal-to-noise ratio, the transmission load and the frequency resource of each terminal device in the terminal device set according to the requirement of the service request, and performing composite weighting calculation to obtain the utility value of each terminal device in the terminal device set; and selecting the terminal equipment corresponding to the highest utility value as the relay equipment.
Optionally, after the step of receiving the relay feedback information sent by the other terminal device, and before the step of selecting the relay device according to the received service request and the relay feedback information, the method further includes: and establishing a relay equipment candidate list facing different service requirements according to the relay hop number, the signal-to-noise ratio, the transmission load and the frequency resource.
Optionally, the step of selecting the relay device according to the received service request and the relay feedback information includes: selecting a relay device candidate list corresponding to the requirements of the service request; selecting a terminal equipment list with the same type as the service request according to the access authority and a relay equipment candidate list corresponding to the requirement of the service request, wherein the type of the service request comprises a precise control service, a general control service and other common services; distributing different weighting coefficients for the relay hop count, the signal-to-noise ratio, the transmission load and the frequency resource of each terminal device in the terminal device list according to the requirement of the service request, and performing composite weighting calculation to obtain the utility value of each terminal device in the terminal device list; and selecting the terminal equipment corresponding to the highest utility value as the relay equipment.
The second aspect of the present invention provides a frequency allocation method for a wireless private power network, including: receiving a relay request sent by relay request equipment; returning relay feedback information according to the relay request; if a relay access request sent by the relay request equipment is received, feeding back frequency resources to the relay request equipment according to the relay access request; and establishing relay connection with the relay request equipment according to the frequency resources.
Optionally, the step of feeding back the frequency resource to the relay request device according to the relay access request includes: and if the idle frequency resources corresponding to the relay access request are more than the frequency resources required by the relay request equipment, feeding back the frequency resources with the highest channel quality in the idle frequency corresponding to the relay access request to the relay request equipment.
Optionally, the step of feeding back the frequency resource to the relay request device according to the relay access request further includes: and if the idle frequency resource corresponding to the relay access request is less than the frequency resource required by the relay request equipment, feeding back the frequency resource corresponding to the relay access request in other terminal equipment to the relay request equipment.
Optionally, the step of feeding back the frequency resource to the relay request device according to the relay access request further includes: and if the idle frequency resource corresponding to the relay access request is less than the frequency resource required by the relay request equipment, feeding back the idle frequency resource corresponding to the relay access request to the relay request equipment after waiting for the frequency resource corresponding to the relay access request to be idle.
Optionally, the step of feeding back the frequency resource to the relay request device according to the relay access request further includes: and if the idle frequency resources corresponding to the relay access request are less than the frequency resources required by the relay request equipment, feeding back the idle frequency resources which do not correspond to the relay access request to the relay request equipment.
Optionally, after the step of returning the relay feedback information according to the relay request and before the step of feeding back the frequency resource to the relay request device according to the relay access request, the method further includes: carrying out priority ordering on the relay access requests which do not feed back the frequency resources; and according to the priority sequence from high to low, for each relay access request without frequency resource feedback, executing the step of feeding back the frequency resource to the relay request equipment according to the relay access request.
A third aspect of the present invention provides a relay connection system, including a relay request device and a relay candidate terminal device; when the service transmission requirement cannot be met, the relay request equipment sends a relay request to relay candidate terminal equipment in the coverage range of the base station; the relay candidate terminal equipment which receives the relay request sends relay feedback information to the relay request equipment according to the relay request; the relay request equipment selects relay equipment from the relay candidate terminal equipment which sends the relay feedback information according to the received service request and the relay feedback information, and sends a relay access request to the relay equipment; the relay equipment feeds back frequency resources to the relay request equipment according to the relay access request; the relay request device and the relay device establish a relay connection according to the frequency resource.
A fourth aspect of the present invention provides a relay selection device for a wireless private power network, including: the relay request sending module is used for sending a relay request to other terminals within the coverage range of the base station when the service transmission requirement cannot be met; the relay feedback information receiving module is used for receiving relay feedback information sent by other terminal equipment; the relay equipment selection module is used for selecting relay equipment according to the received service request and the relay feedback information and sending a relay access request to the relay equipment; the frequency resource receiving module is used for receiving the frequency resource fed back by the relay equipment according to the relay access request; and the first relay connection establishing module is used for establishing relay connection with the relay equipment according to the frequency resources.
The fifth aspect of the present invention provides a frequency allocation apparatus for a wireless private power network, comprising: a relay request receiving module, configured to receive a relay request sent by a relay request device; the relay feedback information sending module is used for requesting to return relay feedback information by a relay; the frequency resource feedback module is used for feeding back frequency resources to the relay request equipment according to the relay access request if receiving the request sent by the relay request equipment; and the second relay connection establishing module is used for establishing relay connection with the relay request equipment according to the frequency resources.
A sixth aspect of the present invention provides a computer apparatus comprising: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor, the instructions being executable by the at least one processor to perform the relay selection method for the private power wireless network according to the first aspect of the present invention or the frequency allocation method for the private power wireless network according to the second aspect.
A seventh aspect of the present invention provides a computer-readable storage medium storing computer instructions for causing a computer to execute the relay selection method for a wireless power private network according to the first aspect of the present invention or the frequency allocation method for a wireless power private network according to the second aspect of the present invention.
The technical scheme of the invention has the following advantages:
1. the relay selection method of the power wireless private network provided by the invention is characterized in that when the service transmission requirement cannot be met, a relay request is sent to other terminal equipment in the coverage range of a base station, then the relay equipment is selected according to relay feedback information sent by the other terminal equipment and the received service request, a relay access request is sent to the selected relay equipment, and relay connection is established with the relay equipment according to frequency resources fed back by the relay equipment. The relay selection method of the electric power wireless private network provided by the invention does not take the coverage range of the base station as the only standard for selecting the relay equipment, but selects the most suitable terminal equipment from a plurality of terminal equipment to connect according to the received service request, and ensures the transmission quality during the subsequent service transmission through the relay connection established by the method.
2. The relay selection method of the electric power wireless private network comprises the steps of screening out a terminal equipment set which is the same as a received service request type according to access authorities of other terminals, distributing different weighting coefficients for relay hop count, signal-to-noise ratio, transmission load and frequency resources of each terminal equipment in the terminal equipment set according to requirements of the service request, carrying out composite weighting calculation to obtain utility values of each terminal equipment, and selecting the terminal equipment corresponding to the highest utility value as the relay equipment. The method selects different relay terminals according to different service requirements instead of selecting and connecting the relay equipment based on a uniform standard, so that the relay connection completed by the method ensures the quality of the relay connection and provides guarantee for subsequent service transmission.
3. After receiving the relay feedback information, the relay selection method of the power wireless private network firstly establishes a relay equipment candidate list facing different service requirements according to the relay feedback information, and after receiving a service request, can directly select the most appropriate terminal equipment from the relay equipment candidate list corresponding to the requirements of the received service request as a relay terminal, so that the relay equipment selected by the method meets the service requirements, ensures the service transmission quality, does not need to be selected from all terminal equipment, and improves the relay connection efficiency.
4. The frequency allocation method of the power wireless private network provided by the invention returns the relay feedback information after receiving the relay request sent by the relay request equipment, so that the relay request equipment can conveniently select the most appropriate terminal equipment from a plurality of terminal equipment in the coverage area of the base station as the relay equipment, and after receiving the relay access request sent by the relay request equipment, the frequency resource most suitable for the relay access request is selected and fed back to the relay request equipment, thereby not only ensuring the relay connection quality, providing guarantee for the service transmission of the relay request equipment, but also realizing the reasonable utilization of the frequency resource.
5. According to the frequency allocation method of the power wireless private network, when frequency resources are fed back to the relay request equipment, priority ordering is firstly carried out on the relay access requests, when the frequency resources corresponding to the relay access requests are sufficient, high-quality resources are preferentially allocated to the relay requests with high priority, and limited resources can be utilized in high quality through the method.
6. According to the frequency allocation method of the power wireless private network, when the frequency resources are fed back to the relay request equipment, if the idle frequency resources cannot meet the relay access request, the frequency resources corresponding to the relay access request in other terminal equipment can be fed back to the relay request equipment, or after the frequency resources corresponding to the relay access request are idle, the idle frequency resources corresponding to the relay access request are fed back to the relay request equipment, or the idle frequency resources not corresponding to the relay access request are fed back to the relay request equipment, and relay connection is performed through the method, so that interference on original terminal communication is avoided, and the utilization rate of the frequency resources is effectively improved.
7. The relay connection system provided by the invention comprises a relay request device and a relay candidate terminal device, when the service transmission requirement can not be met, the relay request device sends a relay request to the relay candidate terminal device, the relay candidate terminal device receiving the relay request sends relay feedback information to the relay request device, the relay feedback information sent by the relay candidate terminal device provides a premise for the subsequent relay request device to select a more appropriate relay device, when the relay request device selects the relay device, the relay request device selects based on the received service request and the relay feedback information, because the most fundamental purpose of establishing the relay connection is to realize high-quality service transmission, the relay device selected by the service request and the relay feedback information better meets the actual requirement of the relay request device, after the relay device is selected, the relay request device sends a relay access request to the relay terminal, the relay device feeds back the frequency resource to the relay request device according to the relay access request, and then the relay request device and the relay device establish the relay connection according to the frequency resource.
8. The relay selection device of the power wireless private network provided by the invention sends a relay request to other terminal equipment in the coverage area of the base station when the service transmission requirement cannot be met, then selects the relay equipment according to the relay feedback information sent by the other terminal equipment and the received service request, sends a relay access request to the selected relay equipment, and establishes relay connection with the relay equipment according to the frequency resource fed back by the relay equipment. The relay selection device of the electric power wireless private network provided by the invention does not take the coverage range of the base station as the only standard for selecting the relay equipment, but selects the most appropriate terminal equipment from a plurality of terminal equipment to connect according to the received service request, and ensures the transmission quality during the subsequent service transmission through the relay connection established by the device.
9. The frequency allocation device of the power wireless private network returns the relay feedback information after receiving the relay request sent by the relay request equipment, so that the relay request equipment can conveniently select the most appropriate terminal equipment from a plurality of terminal equipment in the coverage area of the base station as the relay equipment, and after receiving the relay access request sent by the relay request equipment, the frequency resource most suitable for the relay access request is selected and fed back to the relay request equipment, thereby not only ensuring the relay connection quality, providing guarantee for the service transmission of the relay request equipment, but also realizing the reasonable utilization of the frequency resource.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 to fig. 3 are flowcharts of a specific example of a relay selection method for a wireless power private network provided in an embodiment of the present invention;
fig. 4 is a relay device candidate list established in an embodiment of the present invention;
fig. 5 is a flowchart of a specific example of a relay selection method for a wireless power private network provided in an embodiment of the present invention
Fig. 6 to 7 are flowcharts showing specific examples of a frequency allocation method of a wireless private power network according to an embodiment of the present invention;
FIG. 8 is an exemplary diagram of frequency resource division according to an embodiment of the present invention;
fig. 9 is a flowchart of a specific example of a frequency allocation method of a power wireless private network provided in an embodiment of the present invention;
fig. 10-11 are schematic diagrams of relay connection systems provided in embodiments of the present invention;
FIG. 12 is a block diagram of a relay selection device of a wireless private network according to an embodiment of the present invention
Fig. 13 is a block diagram of a frequency allocation apparatus of a wireless private power network according to an embodiment of the present invention;
fig. 14 is a computer device according to an embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
With the gradual promotion of the construction of the ubiquitous power internet of things, the seamless interconnection and perception of everything are very urgent. The wireless power private network is an indispensable basic support technology for ubiquitous power internet of things, and is particularly important for realizing state perception of various information, so that the wireless power private network is required to be widely covered. However, since there are obstructions such as high buildings in the coverage area, which causes signal attenuation, and there are coverage blind spots even in the coverage area of the wireless private network, blind compensation needs to be performed by a certain technical means in order to meet the service access requirement.
In the electric power wireless network, the electric power wireless network comprises a base station and a plurality of terminal devices, wherein the terminal devices are communication terminal devices, under normal conditions, all the terminal devices within the coverage area of the base station can be directly connected with the base station and transmit information to the base station, but when some terminal devices cannot transmit information to the base station due to some reasons, the terminal devices which cannot transmit information to the base station need to establish relay connection with other terminals.
The embodiment of the invention provides a relay selection method for a wireless private network of electric power, which can be applied to terminal equipment which can not transmit information to a base station, and as shown in fig. 1, the method comprises the following steps:
step S110: and when the service transmission requirement cannot be met, sending a relay request to other terminal equipment within the coverage range of the base station.
The situation that the service transmission requirement cannot be met includes: when a service request is not received, the base station is found to be unable to be connected, or the channel quality is detected to be too poor to meet the transmission of any service; after receiving the service request, it is found that the quality of the channel between the base station and the base station is poor, and the service transmission requirement cannot be met. When the connection with the base station is found to be unavailable or the channel quality is detected to be too poor to meet the transmission of any service, the relay request needs to be sent to other terminal equipment within the coverage range of the base station immediately instead of sending the relay request when the service request comes, so that the service delay is reduced.
Step S120: in a specific embodiment, the terminal device receiving the relay request returns the relay feedback information to the terminal device sending the relay request, so that a suitable relay device can be selected from a plurality of terminal devices within the coverage of the base station in the following process.
Step S130: and selecting the relay equipment according to the received service request and the relay feedback information, and sending a relay access request to the relay equipment.
Step S140: receiving frequency resources fed back by the relay equipment according to the relay access request; the frequency resource may be an idle frequency resource belonging to the relay device, or may be a frequency resource being used by other terminal devices within the coverage of the base station except the relay device.
Step S150: and establishing relay connection with the relay equipment according to the frequency resources.
The relay selection method of the electric power wireless private network provided by the embodiment of the invention does not take the coverage of the base station as the only standard for selecting the relay equipment, but selects the most appropriate terminal equipment from a plurality of terminal equipment to connect according to the received service request, and ensures the transmission quality during the subsequent service transmission through the relay connection established by the method.
In an embodiment, if the service request is not received when the relay request is sent in step S130, after step S120 and before step S130, the relay selection method for the private wireless power network further includes a step of receiving the service request.
In an optional embodiment, in step S120, the relay feedback information sent by the other terminal device includes access rights of the other terminal device, relay hops for the other terminal device to connect to the base station, a signal-to-noise ratio with the other terminal device, a signal-to-noise ratio between the other terminal device and the base station, a transmission load of the other terminal device, and available frequency resources of the other terminal device.
In an alternative embodiment, as shown in fig. 2, the step S130 specifically includes:
step S1301: and selecting the terminal equipment set with the same type as the received service request according to the access authority.
In a specific embodiment, the service types include an accurate control service (accurate control service for short), a general control service, and other general services, where the accurate control service and the general control service belong to a production control large area service, and the other general services belong to a management information large area service, and under a general condition, the accurate load control service and the general control service have a high requirement on delay, and the general services have a high requirement on broadband. When each terminal device is used as a relay, the type of the transmitted service is different according to the attribute of the terminal, the terminal device takes the condition as the access authority in the relay feedback information, and only the service request with the same type of the access authority can be transmitted by taking the terminal device as the relay.
Step S1302: distributing different weighting coefficients for the relay hop count, the signal-to-noise ratio, the transmission load and the frequency resource of each terminal device in the terminal device set according to the requirement of the service request, and performing composite weighting calculation to obtain the utility value of each terminal device in the terminal device set.
Step S1303: and selecting the terminal equipment corresponding to the highest utility value as the relay equipment.
In a specific embodiment, taking high bandwidth services such as video in common services as an example, relay selection is performed through the following procedures:
firstly, selecting a terminal equipment set with an access right of common services, then distributing different weighting coefficients for the relay hop count, the signal-to-noise ratio, the transmission load and the frequency resource of each terminal equipment in the terminal equipment set, wherein the bandwidth is most important for the video services, and the time delay is not very sensitive, so that the weighting coefficient for the frequency resource of each terminal equipment in the terminal equipment set is 0.5, the signal-to-noise ratio is 0.3, the relay hop count is 0.1, and the transmission load is 0.1, respectively calculating the utility value of each terminal equipment, and finally selecting the terminal equipment corresponding to the highest utility value as the relay equipment. In this example, the frequency resource directly affects the transmission bandwidth, which is the most important, so the weighting proportion is the highest, and the signal-to-noise ratio affects the channel quality and the modulation order, so the secondary importance is that the hop count and the load condition are both main factors affecting the delay, and are not the objects of the relay selection of this kind of service, so the weight is lower. The weighting coefficients for relay hop count, signal-to-noise ratio, transmission load, and frequency resource allocation can be adjusted according to actual service requirements.
In a specific embodiment, when the service request has an extremely high requirement in a certain aspect, a certain item in the feedback information may also be directly used as one of the conditions for screening the terminal device set, without allocating a weighting coefficient. For example, for the fine control service, because the requirement on the delay is extremely high, and the relay hop count is the most main factor affecting the transmission delay, the terminal device may be primarily screened according to the relay hop count, for example, the terminal device connected with the base station in a single-hop manner may be first screened, then the screened terminal device may be further screened according to the access right to obtain a terminal device set, then different weights are assigned to the signal-to-noise ratio, the transmission load, and the frequency resource of each terminal in the terminal device set, the utility value of each terminal device is respectively calculated, and finally the terminal device corresponding to the highest utility value is selected as the relay device. The distribution of the weights of the signal-to-noise ratio, the transmission load and the frequency resource can be adjusted according to different service requirements, for example, for load control services, the time delay is most important and the bandwidth is not very sensitive, so that the weighting coefficient distributed to the signal-to-noise ratio is 0.6, the weighting coefficient of the transmission load is 0.3 and the weighting coefficient of the frequency resource is 0.1. The weighting coefficient of the signal-to-noise ratio is the largest because the higher the signal-to-noise ratio is, the better the transmission quality is, the retransmission times are reduced, the time delay is further reduced, the load degree influences the service transmission queuing time, and is also a parameter influencing the time delay, and for the frequency resources, because the service rate of the control class is generally below 10kbps, the requirement is not high, and the weighting coefficient is not used as an important basis for relay selection.
The relay selection method for the electric power wireless private network provided by the embodiment of the invention comprises the steps of screening out a terminal equipment set with the same type as a received service request according to the access authority of other terminals, then distributing different weighting coefficients for the relay hop count, the signal-to-noise ratio, the transmission load and the frequency resource of each terminal equipment in the terminal equipment set according to the requirement of the service request, carrying out composite weighting calculation to obtain the utility value of each terminal equipment, and selecting the terminal equipment corresponding to the highest utility value as the relay equipment. The method selects different relay terminals according to different service requirements instead of selecting and connecting the relay equipment based on a uniform standard, so that the relay connection completed by the method ensures the quality of the relay connection and provides guarantee for subsequent service transmission.
In an alternative embodiment, as shown in fig. 3, the relay selection method for a wireless private power network according to an embodiment of the present invention further includes, after step S120 and before step S130:
step S160: and establishing a relay equipment candidate list facing different service requirements according to the relay hop number, the signal-to-noise ratio, the transmission load and the frequency resource. In this embodiment, when the candidate list of the relay device is created, the service requirements are divided into a high bandwidth service, a low latency service and a high reliability service, and the created candidate list of the relay device is shown in fig. 4.
In an optional embodiment, as shown in fig. 5, if the relay selection method for the wireless private power network according to the embodiment of the present invention performs step S160 to establish the candidate relay device list, after receiving the service request, step S130 specifically includes:
step S1311: for example, when the received service request is a load control service, because the load control service has a high requirement on delay, the terminal device in queue 2 in the relay device candidate list shown in fig. 4 may be selected, and then the terminal device in queue 2 may be further selected.
Step S1312: and selecting a terminal equipment list with the same type as the service request according to the access authority and the relay equipment candidate list corresponding to the requirement of the service request.
Step S1313: distributing different weighting coefficients for the relay hop count, the signal-to-noise ratio, the transmission load and the frequency resource of each terminal device in the terminal device list according to the requirement of the service request, and performing composite weighting calculation to obtain the utility value of each terminal device in the terminal device list.
Step S1314: and selecting the terminal equipment corresponding to the highest utility value as the relay equipment.
The detailed description of steps S1312 to S1314 is described above in relation to steps S1301 to S1303.
According to the relay selection method for the power wireless private network, after the relay feedback information is received, firstly, the relay equipment candidate list facing different service requirements is established according to the relay feedback information, after the service request is received, the most appropriate terminal equipment can be directly selected from the relay equipment candidate list corresponding to the requirements of the received service request to serve as the relay terminal, so that the relay equipment selected by the method meets the service requirements, the service transmission quality is guaranteed, the relay equipment does not need to be selected from all the terminal equipment, and the relay connection efficiency is improved.
Example 2
An embodiment of the present invention provides a method for allocating a frequency spectrum of a wireless private power network, which is applicable to a terminal device that can be connected to a base station and receives a relay request sent by another terminal, and as shown in fig. 6, the method includes:
for step S210: and receiving a relay request sent by the relay request equipment.
For step S220: and returning relay feedback information according to the relay request, wherein the relay feedback information comprises access authority, relay hop number connected to the base station, signal-to-noise ratio with the relay request equipment, signal-to-noise ratio with the base station, transmission load and available frequency resources.
For step S230: and if receiving a relay access request sent by the relay request equipment, feeding back frequency resources to the relay request equipment according to the relay access request. In a specific embodiment, only the relay access request sent by one relay request device may be received in the same time period, or the relay access requests sent by multiple relay request devices may be received simultaneously, and the frequency resource needs to be fed back to the relay request device sending the relay access request according to the use condition of the frequency resource of the relay access device and the relay access request.
For step S240: and establishing relay connection with the relay request equipment according to the frequency resources.
According to the frequency spectrum allocation method of the power wireless private network provided by the embodiment of the invention, after the relay request sent by the relay request equipment is received, the relay feedback information is returned, so that the relay request equipment can conveniently select the most appropriate terminal equipment from a plurality of terminal equipment in the coverage range of the base station as the relay equipment, and after the relay access request sent by the relay request equipment is received, the frequency resource most suitable for the relay access request is selected and fed back to the relay request equipment, so that the relay connection quality is ensured, the guarantee is provided for the service transmission of the relay request equipment, and the reasonable utilization of the frequency resource is realized.
In an alternative embodiment, as shown in fig. 7, the step S230 specifically includes:
step S231: and if the idle frequency resources corresponding to the relay access request are more than the frequency resources required by the relay request equipment, feeding back the frequency resources with the highest channel quality in the idle frequency corresponding to the relay access request to the relay request equipment. The relay access request comprises service request information received by the relay request equipment, and the frequency resource is fed back to the relay request equipment according to the relay access request, actually, the frequency resource is fed back to the relay request equipment according to the service request received by the relay request equipment.
It should be noted that the service types are divided into three types: when establishing the wireless private network, in order to ensure resource isolation between different types of services, ensure quality of service, and meet the requirements of power safety management, the wireless private network allocates three frequency resources to each terminal device, as shown in fig. 8, for the three types of services: the method comprises a fine control service resource pool f1, a general control service resource pool f2 and other common service resource pools f3, wherein the interior of each resource pool is further divided into f12, f13, f21, f22, f31, f32 and the like according to specific services. In general, the precision control service shares resources in the precision control service resource pool, the general control service shares resources in the general control service resource pool, and other general services share resources in other general service resource pools. That is, if the service request received by the relay request device is a precision control service, the frequency resource corresponding to the relay access request is a frequency resource in a precision control service resource pool. When the idle frequency resources corresponding to the relay access request are more than the frequency resources required by the relay request device, the frequency resources with the highest channel quality in the idle frequency corresponding to the relay access request are fed back to the relay request device, that is, even if the priority of the service request is lower, when the idle frequency resources in the resource pool corresponding to the service request are more, the frequency resources of the high-priority service in the resource pool can be fed back to the relay request device, but when the high-priority service comes, the low-priority service needs to be immediately exited.
In an alternative embodiment, as shown in fig. 7, the step S230 further includes:
step S232: if the idle frequency resources corresponding to the relay access request are less than the frequency resources required by the relay request device, feeding back the frequency resources corresponding to the relay access request in other terminal devices to the relay request device, that is, feeding back the frequency resources in the terminal device far away from the relay request device to the relay request device by using the idea of frequency division multiplexing.
In an alternative embodiment, as shown in fig. 7, the step S230 further includes:
step S233: and if the idle frequency resource corresponding to the relay access request is less than the frequency resource required by the relay request equipment, feeding back the idle frequency resource corresponding to the relay access request to the relay request equipment after waiting for the frequency resource corresponding to the relay access request to be idle.
In an alternative embodiment, as shown in fig. 7, the step S230 further includes:
step S234: and if the idle frequency resources corresponding to the relay access request are less than the frequency resources required by the relay request equipment, feeding back the idle frequency resources which do not correspond to the relay access request to the relay request equipment. However, when feeding back the frequency resource by this method, the resource pool corresponding to the service with a lower priority may be allocated only to the service with a higher priority, for example, if the service type in the relay access request is the fine control service, when the idle frequency resource in the fine control service resource pool is less than the frequency resource required by the relay request device, the idle frequency resource in the general control service resource pool or other common service resource pools may be fed back to the relay request device. However, if the service type in the relay access request is the fine control service, the frequency resource in the fine control service resource pool cannot be fed back to the relay request device.
The above steps S232 to S234 are three solutions for the case that the idle frequency resource cannot meet the requirement of the relay request device, and preferably include steps S232 and S233.
According to the frequency spectrum allocation method of the power wireless private network provided by the embodiment of the invention, when the frequency resources are fed back to the relay request equipment, if the idle frequency resources cannot meet the relay access request, the frequency resources corresponding to the relay access request in other terminal equipment can be fed back to the relay request equipment, or after the frequency resources corresponding to the relay access request are idle, the idle frequency resources corresponding to the relay access request are fed back to the relay request equipment, or the idle frequency resources not corresponding to the relay access request are fed back to the relay request equipment, and the relay connection is carried out by the method, so that the interference to the original terminal communication is avoided, and the utilization rate of the frequency resources is effectively improved.
In an alternative embodiment, as shown in fig. 9, after the step S220 and before the step S230, the method for allocating a spectrum of a wireless private power network further includes:
step S250: and carrying out priority ordering on the relay access requests which do not feed back the frequency resources.
The above steps S231 to S234 are performed for the relay access requests of the unrevealed frequency resources in the order of priority from high to low. Step S250 is mainly applied to the case of simultaneously receiving relay access requests sent by a plurality of relay request devices.
According to the frequency spectrum allocation method of the power wireless private network provided by the embodiment of the invention, when frequency resources are fed back to the relay request equipment, priority ordering is firstly carried out on the relay access requests, and when the frequency resources corresponding to the relay access requests are sufficient, high-quality resources are preferentially allocated to the relay requests with high priority, so that the limited resources can be utilized with high quality.
Example 3
The embodiment of the invention provides a relay connection system, which comprises relay request equipment and relay candidate terminal equipment, wherein as shown in fig. 10, the relay request equipment is coverage blind area communication terminals A1 and A2 shown in the figure, the relay candidate equipment is terminal equipment R1-R4 within the coverage range of a base station, the coverage blind area communication terminals can simultaneously send relay requests to a plurality of terminal equipment within the coverage range of the base station, and the terminal equipment within the coverage range of the base station is divided into idle state communication terminals and connection state communication terminals. When a certain terminal device cannot meet the service transmission requirement and needs to establish relay connection with other terminals, the terminal device may be called a relay request device, the terminal devices located within the coverage area of the base station and meeting the conditions of the relay device are all relay candidate terminal devices, and when the service transmission requirement cannot be met, the relay request device needs to interact with the relay candidate terminal devices and establish relay connection with a certain terminal device of the relay candidate terminal devices to complete service transmission, and the specific steps are shown in fig. 11:
step S310: when the service transmission requirement cannot be met, the relay request device sends a relay request to the relay candidate terminal device within the coverage of the base station, which is described in detail in the above embodiment 1 for step S110.
Step S320: the relay candidate terminal device that has received the relay request transmits relay feedback information to the relay requesting device according to the relay request, which is described in detail in the above embodiment 2 for the step S220.
Step S330: the relay request device selects a relay device from the relay candidate terminal devices that send relay feedback information according to the received service request and the relay feedback information, and sends a relay access request to the relay device, which is described in detail in the above embodiment 1 for step S130.
Step S340: the detailed description of the relay device feeding back the frequency resource to the relay request device according to the relay access request is described in the above embodiment 2 with reference to step S230.
Step S350: the relay request device and the relay device establish a relay connection according to the frequency resource.
The relay connection system provided by the embodiment of the invention comprises relay request equipment and relay candidate terminal equipment, when the service transmission requirement cannot be met, the relay request equipment sends a relay request to the relay candidate terminal equipment, the relay candidate terminal equipment receiving the relay request sends relay feedback information to the relay request equipment, the relay feedback information sent by the relay candidate terminal equipment provides a premise for selecting more proper relay equipment for subsequent relay request equipment, when the relay request equipment selects the relay equipment, the relay request equipment is selected based on the received service request and the relay feedback information, because the most basic purpose of establishing relay connection is to realize high-quality service transmission, the relay equipment selected by the service request and the relay feedback information better meets the actual requirement of the relay request equipment, and after the relay equipment is selected, the relay request equipment sends a relay access request to the relay terminal, the relay equipment feeds back the frequency resource to the relay request equipment according to the relay access request, then the relay request equipment and the relay equipment establish the relay connection according to the frequency resource, and the most fundamental purpose of establishing the relay connection is to realize high-quality service transmission.
Example 4
An embodiment of the present invention provides a relay selection apparatus for a wireless private power network, as shown in fig. 12, including:
the relay request sending module 110 sends a relay request to other terminals within the coverage of the base station when the service transmission requirement cannot be met, and the detailed description is described in the above embodiment 1 for step S110.
The relay feedback information receiving module 120 is configured to receive relay feedback information sent by another terminal device, and the detailed description is described in the foregoing embodiment 1 for the step S120.
The relay device selecting module 130 is configured to select a relay device according to the received service request and the relay feedback information, and send a relay access request to the relay device, which is described in detail in the above embodiment 1 for the step S130.
The frequency resource receiving module 140 is configured to receive a frequency resource fed back by the relay device according to the relay access request, and the detailed description is described in the foregoing embodiment 1 for the step S140.
The first relay connection establishing module 150 is configured to establish a relay connection with a relay device according to the frequency resource, and the detailed description is described in the above embodiment 1 for the step S150.
The relay selection device for the power wireless private network provided by the embodiment of the invention sends a relay request to other terminal equipment in the coverage area of the base station when the service transmission requirement cannot be met, then selects the relay equipment according to the relay feedback information sent by the other terminal equipment and the received service request, sends a relay access request to the selected relay equipment, and establishes relay connection with the relay equipment according to the frequency resource fed back by the relay equipment. The relay selection device of the electric power wireless private network provided by the invention does not take the coverage range of the base station as the only standard for selecting the relay equipment, but selects the most appropriate terminal equipment from a plurality of terminal equipment to connect according to the received service request, and ensures the transmission quality during the subsequent service transmission through the relay connection established by the device.
Example 5
An embodiment of the present invention provides a spectrum allocation apparatus for a wireless private power network, as shown in fig. 13, including:
the relay request receiving module 210 is configured to receive a relay request sent by a relay request device, and the detailed description is described in the foregoing embodiment 2 for the step S210.
The relay feedback information sending module 220 is configured to relay the request for returning the relay feedback information, and the detailed description is described in the foregoing embodiment 2 for the step S220.
The frequency resource feedback module 230, if receiving the request sent by the relay request device, is configured to feedback the frequency resource to the relay request device according to the relay access request, and the detailed description is described in the foregoing embodiment 2 for the step S230.
The second relay connection establishing module 240 is configured to establish a relay connection with the relay requesting device according to the frequency resource, and the detailed description is described in the foregoing description of the step S240 in embodiment 2.
The frequency spectrum allocation device of the power wireless private network provided by the embodiment of the invention returns the relay feedback information after receiving the relay request sent by the relay request equipment, so that the relay request equipment can conveniently select the most appropriate terminal equipment from a plurality of terminal equipment in the coverage range of the base station as the relay equipment, and after receiving the relay access request sent by the relay request equipment, the frequency resource most suitable for the relay access request is selected and fed back to the relay request equipment, thereby not only ensuring the relay connection quality, providing guarantee for the service transmission of the relay request equipment, but also realizing the reasonable utilization of the frequency resource.
Example 6
An embodiment of the present invention provides a computer device, as shown in fig. 14, the computer device mainly includes one or more processors 31 and a memory 32, and one processor 31 is taken as an example in fig. 14.
The computer device may further include: an input device 33 and an output device 34.
The processor 31, the memory 32, the input device 33 and the output device 34 may be connected by a bus or other means, and the bus connection is exemplified in fig. 14.
The processor 31 may be a Central Processing Unit (CPU). The Processor 31 may also be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, or combinations thereof. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The memory 32 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to use of a relay selection device of the private power wireless network, or a spectrum allocation device of the private power wireless network, or the like. Further, the memory 32 may include high speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory 32 may optionally include a memory remotely located from the processor 31, and these remote memories may be connected to the relay selection device of the private power wireless network or the spectrum allocation device of the private power wireless network through a network. The input device 33 may receive a calculation request (or other numeric or character information) input by a user and generate a key signal input associated with the relay connection device. The output device 34 may include a display device such as a display screen for outputting the calculation result.
Example 7
An embodiment of the present invention provides a computer-readable storage medium, where the computer-readable storage medium stores computer instructions, and the computer-readable storage medium stores computer-executable instructions, where the computer-executable instructions may perform a relay selection method for a wireless power private network or a spectrum allocation method for the wireless power private network in any of the above method embodiments. The storage medium may be a magnetic Disk, an optical Disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a Flash Memory (Flash Memory), a Hard Disk (Hard Disk Drive, abbreviated as HDD) or a Solid State Drive (SSD), etc.; the storage medium may also comprise a combination of memories of the kind described above.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims (14)

1. A relay selection method of a power wireless private network is characterized by comprising the following steps:
when the service transmission requirement cannot be met, a relay request is sent to other terminal equipment within the coverage range of the base station;
receiving relay feedback information sent by other terminal equipment;
selecting relay equipment according to the received service request and the relay feedback information, and sending a relay access request to the relay equipment; the relay feedback information comprises the access authority of other terminal equipment, and the terminal equipment with the same type of the access authority and the received service request is used as the relay equipment;
receiving frequency resources fed back by the relay equipment according to the relay access request;
establishing relay connection with the relay equipment according to the frequency resources;
the relay feedback information comprises relay hop numbers of the other terminal equipment connected to a base station, signal-to-noise ratios of the other terminal equipment, signal-to-noise ratios between the other terminal equipment and the base station, transmission loads of the other terminal equipment and available frequency resources of the other terminal equipment;
the step of selecting the relay device according to the received service request and the relay feedback information includes:
selecting a terminal equipment set with the same type as the received service request according to the access authority, wherein the type of the service request comprises a fine control service, a general control service and other common services;
distributing different weighting coefficients for the relay hop count, the signal-to-noise ratio, the transmission load and the frequency resource of each terminal device in the terminal device set according to the requirement of the service request, and performing composite weighting calculation to obtain the utility value of each terminal device in the terminal device set;
and selecting the terminal equipment corresponding to the highest utility value as the relay equipment.
2. The relay selection method for the wireless private power network according to claim 1, wherein after the step of receiving the relay feedback information sent by the other terminal device and before the step of selecting the relay device according to the received service request and the relay feedback information, the method further comprises:
and establishing a relay equipment candidate list facing different service requirements according to the relay hop number, the signal-to-noise ratio, the transmission load and the frequency resource.
3. The relay selection method of the wireless private power network according to claim 2, wherein the step of selecting the relay device according to the received service request and the relay feedback information comprises:
selecting a relay device candidate list corresponding to the requirements of the service request;
selecting a terminal equipment list with the same type as the service request according to the access authority and the relay equipment candidate list corresponding to the requirement of the service request, wherein the type of the service request comprises a fine control service, a general control service and other common services;
distributing different weighting coefficients for the relay hop count, the signal-to-noise ratio, the transmission load and the frequency resource of each terminal device in the terminal device list according to the requirement of the service request, and performing composite weighting calculation to obtain the utility value of each terminal device in the terminal device list;
and selecting the terminal equipment corresponding to the highest utility value as the relay equipment.
4. A method for allocating frequency spectrum of a power wireless private network is characterized by comprising the following steps:
receiving a relay request sent by relay request equipment;
returning relay feedback information according to the relay request;
if a relay access request sent by the relay request equipment is received, feeding back frequency resources to the relay request equipment according to the relay access request;
establishing relay connection with the relay request equipment according to the frequency resources;
the feedback information comprises access authority, relay hop number connected to the base station, signal to noise ratio with the relay request equipment, signal to noise ratio with the base station, transmission load and available frequency resources; the relay request equipment selects a terminal equipment set with the same type as the received service request according to the access authority, wherein the type of the service request comprises a fine control service, a general control service and other common services; distributing different weighting coefficients for the relay hop count, the signal-to-noise ratio, the transmission load and the frequency resource of each terminal device in the terminal device set according to the requirement of the service request, and performing composite weighting calculation to obtain the utility value of each terminal device in the terminal device set; and selecting the terminal equipment corresponding to the highest utility value as the relay equipment, and sending a relay access request to the relay equipment.
5. The method for allocating spectrum of private wireless power network according to claim 4, wherein the step of feeding back frequency resources to the relay request device according to the relay access request comprises:
and if the idle frequency resource corresponding to the relay access request is more than the frequency resource required by the relay request equipment, feeding back the frequency resource with the highest channel quality in the idle frequency corresponding to the relay access request to the relay request equipment.
6. The method for allocating spectrum of private wireless power network according to claim 5, wherein the step of feeding back frequency resources to the relay request device according to the relay access request further comprises:
and if the idle frequency resource corresponding to the relay access request is less than the frequency resource required by the relay request equipment, feeding back the frequency resource corresponding to the relay access request in other terminal equipment to the relay request equipment.
7. The method for allocating spectrum of private wireless power network according to claim 5, wherein the step of feeding back frequency resources to the relay request device according to the relay access request further comprises:
and if the idle frequency resource corresponding to the relay access request is less than the frequency resource required by the relay request equipment, after waiting for the idle frequency resource corresponding to the relay access request, feeding back the idle frequency resource corresponding to the relay access request to the relay request equipment.
8. The method for allocating spectrum of private wireless power network according to claim 5, wherein the step of feeding back frequency resources to the relay request device according to the relay access request further comprises:
and if the idle frequency resource corresponding to the relay access request is less than the frequency resource required by the relay request equipment, feeding back the idle frequency resource which does not correspond to the relay access request to the relay request equipment.
9. The method for allocating spectrum of a wireless private power network according to any one of claims 4 to 8, wherein after the step of returning relay feedback information according to the relay request and before the step of feeding back frequency resources to the relay request device according to the relay access request, further comprising:
carrying out priority ordering on the relay access requests which do not feed back the frequency resources;
and according to the priority sequence from high to low, the step of feeding back the frequency resources to the relay request equipment according to the relay access request is carried out on the relay access requests which do not feed back the frequency resources.
10. A relay connection system is characterized by comprising a relay request device and a relay candidate terminal device;
when the service transmission requirement cannot be met, the relay request equipment sends a relay request to the relay candidate terminal equipment within the coverage range of the base station;
the relay candidate terminal equipment which receives the relay request sends relay feedback information to the relay request equipment according to the relay request; the relay feedback information comprises the access authority of other terminal equipment, and the terminal equipment with the same type of the access authority and the received service request is used as relay equipment;
the relay request equipment selects relay equipment from relay candidate terminal equipment which sends relay feedback information according to the received service request and the relay feedback information, and sends a relay access request to the relay equipment;
the relay equipment feeds back frequency resources to the relay request equipment according to the relay access request;
the relay request equipment and the relay equipment establish relay connection according to the frequency resources;
the relay feedback information comprises relay hop numbers of the other terminal equipment connected to a base station, signal-to-noise ratios of the other terminal equipment, signal-to-noise ratios between the other terminal equipment and the base station, transmission loads of the other terminal equipment and available frequency resources of the other terminal equipment;
the step of selecting the relay device according to the received service request and the relay feedback information includes:
selecting a terminal equipment set with the same type as the received service request according to the access authority, wherein the type of the service request comprises a fine control service, a general control service and other common services;
distributing different weighting coefficients for the relay hop count, the signal-to-noise ratio, the transmission load and the frequency resource of each terminal device in the terminal device set according to the requirement of the service request, and performing composite weighting calculation to obtain the utility value of each terminal device in the terminal device set;
and selecting the terminal equipment corresponding to the highest utility value as the relay equipment.
11. A relay selection device for a wireless private power network, comprising:
the relay request sending module is used for sending a relay request to other terminals within the coverage range of the base station when the service transmission requirement cannot be met;
the relay feedback information receiving module is used for receiving the relay feedback information sent by the other terminal equipment;
the relay equipment selection module is used for selecting relay equipment according to the received service request and the relay feedback information and sending a relay access request to the relay equipment; the relay feedback information comprises the access authority of other terminal equipment, and the terminal equipment with the same type of the access authority and the received service request is used as the relay equipment;
a frequency resource receiving module, configured to receive a frequency resource fed back by the relay device according to the relay access request;
a first relay connection establishing module, configured to establish a relay connection with the relay device according to the frequency resource;
the relay feedback information comprises relay hop numbers of the other terminal equipment connected to a base station, signal-to-noise ratios of the other terminal equipment, signal-to-noise ratios between the other terminal equipment and the base station, transmission loads of the other terminal equipment and available frequency resources of the other terminal equipment;
the step of selecting the relay device according to the received service request and the relay feedback information includes:
selecting a terminal equipment set with the same type as the received service request according to the access authority, wherein the type of the service request comprises a fine control service, a general control service and other common services;
distributing different weighting coefficients for the relay hop count, the signal-to-noise ratio, the transmission load and the frequency resource of each terminal device in the terminal device set according to the requirement of the service request, and performing composite weighting calculation to obtain the utility value of each terminal device in the terminal device set;
and selecting the terminal equipment corresponding to the highest utility value as the relay equipment.
12. An apparatus for allocating spectrum of a power wireless private network, comprising:
a relay request receiving module, configured to receive a relay request sent by a relay request device;
a relay feedback information sending module, configured to return relay feedback information in response to the relay request;
the frequency resource feedback module is used for feeding back frequency resources to the relay request equipment according to the relay access request if receiving the relay access request sent by the relay request equipment;
a second relay connection establishing module, configured to establish a relay connection with the relay request device according to the frequency resource;
the feedback information comprises access authority, relay hop number connected to the base station, signal to noise ratio with the relay request equipment, signal to noise ratio with the base station, transmission load and available frequency resources; the relay request equipment selects a terminal equipment set with the same type as the received service request according to the access authority, wherein the type of the service request comprises a fine control service, a general control service and other common services; distributing different weighting coefficients for the relay hop count, the signal-to-noise ratio, the transmission load and the frequency resource of each terminal device in the terminal device set according to the requirement of the service request, and performing composite weighting calculation to obtain the utility value of each terminal device in the terminal device set; and selecting the terminal equipment corresponding to the highest utility value as the relay equipment, and sending a relay access request to the relay equipment.
13. A computer device, comprising:
at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to perform the method for relay selection in a private power wireless network according to any one of claims 1 to 3 or the method for frequency allocation in a private power wireless network according to any one of claims 4 to 9.
14. A computer-readable storage medium storing computer instructions for causing a computer to execute a relay selection method of a power wireless private network according to any one of claims 1 to 3 or a frequency allocation method of a power wireless private network according to any one of claims 4 to 9.
CN201911099873.1A 2019-11-12 2019-11-12 Relay selection and frequency distribution method and device for electric power wireless private network Active CN110856232B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911099873.1A CN110856232B (en) 2019-11-12 2019-11-12 Relay selection and frequency distribution method and device for electric power wireless private network

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911099873.1A CN110856232B (en) 2019-11-12 2019-11-12 Relay selection and frequency distribution method and device for electric power wireless private network

Publications (2)

Publication Number Publication Date
CN110856232A CN110856232A (en) 2020-02-28
CN110856232B true CN110856232B (en) 2022-02-08

Family

ID=69601667

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911099873.1A Active CN110856232B (en) 2019-11-12 2019-11-12 Relay selection and frequency distribution method and device for electric power wireless private network

Country Status (1)

Country Link
CN (1) CN110856232B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114828221B (en) * 2020-03-05 2024-09-06 华为技术有限公司 Communication method and related device
CN111970728A (en) * 2020-08-25 2020-11-20 塔盾信息技术(上海)有限公司 AI (Artificial intelligence) public-private converged communication commonality technical architecture and method
CN112437106A (en) * 2020-08-31 2021-03-02 上海哔哩哔哩科技有限公司 Method and equipment for uploading files by using relay nodes
CN112040527B (en) * 2020-09-07 2022-06-03 重庆科华安全设备有限责任公司 Wireless communication networking method for long single-chain structure of underground roadway environment
CN114268962B (en) * 2020-09-16 2024-05-14 塔盾信息技术(上海)有限公司 Intelligent equipment networking method based on AI public-private fusion handheld terminal
CN114269003A (en) * 2020-09-16 2022-04-01 塔盾信息技术(上海)有限公司 AI terminal equipment for realizing broadband and narrowband integrated communication
CN114339934A (en) * 2020-09-30 2022-04-12 展讯通信（上海）有限公司 Relay selection method based on service and related product

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101667972A (en) * 2009-10-19 2010-03-10 国网信息通信有限公司 Power communication network service routing method and device
CN104240322A (en) * 2014-09-26 2014-12-24 中国能源建设集团广东省电力设计研究院 Online mobile inspection system and method for substation equipment based on wireless private power network
CN104253630A (en) * 2013-06-26 2014-12-31 国际商业机器公司 Method and system for transmitting data at power line by using power line carrier
CN104936267A (en) * 2014-03-20 2015-09-23 中国电信股份有限公司 Method, base station and system used for selecting relay terminal
CN106656263A (en) * 2016-12-13 2017-05-10 国网江苏省电力公司泰州供电公司 Power line communication path search method fusing power frequency communication
WO2019000851A1 (en) * 2017-06-30 2019-01-03 华南理工大学 Game theory-based relay selection and power distribution method in smart power grid
CN109890014A (en) * 2019-04-03 2019-06-14 成都中科微信息技术研究院有限公司 A kind of relay transmission method of the electric power wireless private network based on terminal direct communication

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101039526B (en) * 2007-04-25 2010-04-14 北京邮电大学 Method for selecting user stay and relay node of central control wireless relay network
JP2012227835A (en) * 2011-04-21 2012-11-15 Murata Mach Ltd Relay server and relay communication system
US10225844B2 (en) * 2013-07-05 2019-03-05 Lg Electronics Inc. Method for selecting or reselecting relay for proximity service
CN108959939B (en) * 2018-04-18 2020-12-25 腾讯科技（深圳）有限公司 System authority opening method, device, system and storage medium

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101667972A (en) * 2009-10-19 2010-03-10 国网信息通信有限公司 Power communication network service routing method and device
CN104253630A (en) * 2013-06-26 2014-12-31 国际商业机器公司 Method and system for transmitting data at power line by using power line carrier
CN104936267A (en) * 2014-03-20 2015-09-23 中国电信股份有限公司 Method, base station and system used for selecting relay terminal
CN104240322A (en) * 2014-09-26 2014-12-24 中国能源建设集团广东省电力设计研究院 Online mobile inspection system and method for substation equipment based on wireless private power network
CN106656263A (en) * 2016-12-13 2017-05-10 国网江苏省电力公司泰州供电公司 Power line communication path search method fusing power frequency communication
WO2019000851A1 (en) * 2017-06-30 2019-01-03 华南理工大学 Game theory-based relay selection and power distribution method in smart power grid
CN109890014A (en) * 2019-04-03 2019-06-14 成都中科微信息技术研究院有限公司 A kind of relay transmission method of the electric power wireless private network based on terminal direct communication

Also Published As

Publication number Publication date
CN110856232A (en) 2020-02-28

Similar Documents

Publication Publication Date Title
CN110856232B (en) Relay selection and frequency distribution method and device for electric power wireless private network
US8626220B2 (en) Dynamic spectrum allocation method and device
US8483123B2 (en) QoS request and information distribution for wireless relay networks
EP1917763B1 (en) Communications system and method for transmitting data between a terminal and network resources
US10624115B2 (en) Radio resource scheduling method, device and system
US20240349265A1 (en) Communication method and apparatus
CN110248417B (en) Resource allocation method and system for communication service in power Internet of things
CN109640289B (en) Communication method and device, and communication system
JP4824772B2 (en) Resource scheduling in cellular systems
CN104378830A (en) Distribution method and system of scheduling request resources
KR20160035024A (en) System and method for ofdma resource management in wlan
CN109743751B (en) Resource allocation method and device for wireless access network
CN106211341B (en) Bandwidth allocation method and device in wireless relay system
CN115943727A (en) Communication method and device, electronic device and storage medium
KR102201914B1 (en) Scheduling method, terminal and base station
CN108282905B (en) Random access method and network element thereof
US10588131B2 (en) Method and network node for dynamic resource allocation for control channels
CN108418624B (en) Method and device for performing cognitive satellite communication in unauthorized frequency band
CN117750552A (en) Communication resource management method and node of wireless network
CN110475375B (en) Wireless access point, channel allocation method thereof and computer readable storage medium
CN113068161A (en) Bluetooth low-energy-consumption communication method, device and system and storage medium
CN114364042A (en) Communication resource scheduling method, device, electronic equipment and computer readable medium
JP2002262333A (en) Analysis method for wireless packet exchange system
WO2020164207A1 (en) Method and device for processing channels, and electronic device
KR101983291B1 (en) Mf-tdma based satellite communication method and satellite communication terminal

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant