CN109890014A - A kind of relay transmission method of the electric power wireless private network based on terminal direct communication - Google Patents
A kind of relay transmission method of the electric power wireless private network based on terminal direct communication Download PDFInfo
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- CN109890014A CN109890014A CN201910264030.6A CN201910264030A CN109890014A CN 109890014 A CN109890014 A CN 109890014A CN 201910264030 A CN201910264030 A CN 201910264030A CN 109890014 A CN109890014 A CN 109890014A
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Abstract
The relay transmission method of the invention discloses a kind of electric power wireless private network based on terminal direct communication comprising: base station returns situation according to the access situation and business of electric power terminal in coverage area and selects the electric power terminal for meeting preset condition as link terminal.And activation instruction is issued to link terminal；Link terminal starts D2D listening mode according to activation instruction；When requesting terminal needs return data, start D2D mode, to establish D2D link with link terminal, wherein requesting terminal is can not be with the electric power terminal of base station direct communication；The channel quality of the D2D link of each link terminal is detected in requesting terminal, and selects the highest link terminal of channel quality as preferred link terminal, by remaining link terminal alternately link terminal；Requesting terminal is communicated with preferred link terminal, to complete data back.The present invention can select suitable electric power terminal to complete the relay transmission of data.
Description
Technical field
The present invention relates to wireless communication technology fields, wirelessly special more particularly to a kind of electric power based on terminal direct communication
The relay transmission method of net.
Background technique
Electric power private wireless network system is wireless private network communication system of the work in 230MHz frequency range, and it is automatic to meet its distribution
Change, load management, power information acquisition, smart power grid user device service, emergency first-aid repair, special area video monitoring six are led greatly
The business demand in domain.
That terminal direct communication (Device to Device, D2D) is base station is close to spacing distance by control link, to bee
The small user terminal of nest link interference distributes resource, so that terminal room is directly carried out a kind of technology of data communication, it can be improved
The availability of frequency spectrum saves terminal transmission power and shunts transmission.When wireless communication link is second-rate, can be relayed by establishing
The method of link improves user communication quality.Terminal direct communication mode is the expansion mode of terminal data passback.Electric power is wireless
The electric power terminal device of private network is fixedly installed mostly, and D2D is mainly used in cell edge or deep covering scene.
In existing D2D technology, electric power terminal has data to send and can initiate D2D communication, hair when can not connect with base station
The D2D communication request comprising self information is sent, D2D communication request may be received by multiple neighbouring electric power terminals.But currently
In D2D communication mechanism, D2D communication initiating terminal can only obtain end message adjacent to it, in this case it is not apparent which terminal is supported
Relay capabilities, therefore suitable terminal can not be selected to access network or be communicated, this just seriously constrains the number of D2D communication
According to efficiency of transmission and accuracy rate.
Summary of the invention
In the invention mainly solves the technical problem of providing a kind of electric power wireless private network based on terminal direct communication
After transmission method, suitable electric power terminal can be selected to complete the relay transmission of data.
In order to solve the above technical problems, one technical scheme adopted by the invention is that: it provides a kind of directly logical based on terminal
The relay transmission method of the electric power wireless private network of letter, comprising: base station is according to the access situation and industry of electric power terminal in coverage area
Business passback situation selects the electric power terminal for meeting preset condition as link terminal.And activation is issued to the link terminal and is referred to
It enables；The link terminal starts terminal direct communication D2D listening mode according to the activation instruction；Requesting terminal needs to return number
According to when, start D2D mode, to establish D2D link with the link terminal, wherein the requesting terminal be can not be with the base
The electric power terminal for direct communication of standing；The channel quality of the D2D link of each link terminal is detected in the requesting terminal, and selects to believe
Quality highest link terminal in road is as preferred link terminal, by remaining link terminal alternately link terminal；The request
Terminal is communicated with the preferred link terminal, to complete data back.
Preferably, the step of link terminal starts D2D listening mode according to the activation instruction specifically: institute
It states link terminal and timing is started according to the activation instruction, and only start D2D listening mode in default timing.
Preferably, the relay transmission method further include: the requesting terminal is communicated with the preferred link terminal
When, if the channel quality of the D2D link of the first choice link terminal is lower than predetermined threshold value or D2D link down, selection
One alternative link terminal is communicated, to continue to complete data back.
Preferably, the step of one alternative link terminal of the selection is communicated specifically: the requesting terminal is by institute
There is alternative link terminal to be ranked up according to the sequence of channel quality from high to low；The requesting terminal is sequentially whole to alternative relaying
End sends D2D communication request；If receiving the feedback of current alternative link terminal, the requesting terminal and alternative link terminal
Establish D2D link and communicated, if being not received by the feedback of current alternative link terminal, the requesting terminal continue to
Next alternative link terminal of current alternative link terminal sends D2D communication request, until establishing D2D link.
Preferably, the step of one alternative link terminal of the selection is communicated further include: if the requesting terminal
It is not received by the feedback of the last one alternative link terminal, then re-starts and sequentially sends D2D communication to alternative link terminal
The step of request.
It is in contrast to the prior art, makees the beneficial effects of the present invention are: base station pre-selects suitable electric power terminal
For link terminal, and only receives base station and issue the link terminal of activation instruction and just will start D2D listening mode, it can not be with institute
The electric power terminal for stating base station direct communication can star D2D mode and link terminal establishes D2D link, suitable so as to select
Electric power terminal complete the relay transmissions of data, it is possible to reduce the problems such as discovery D2D response resource contention and network interferences, keep away
Exempt from inappropriate electric power terminal progress D2D communication and causes unnecessary energy consumption.
Detailed description of the invention
Fig. 1 is the process of the relay transmission method of the electric power wireless private network based on terminal direct communication of the embodiment of the present invention
Schematic diagram.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that the described embodiments are merely a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Refering to fig. 1, the relay transmission method packet of the electric power wireless private network based on terminal direct communication of the embodiment of the present invention
It includes:
S1: base station returns situation selection according to the access situation and business of electric power terminal in coverage area and meets preset condition
Electric power terminal as link terminal.And activation instruction is issued to link terminal.
Wherein, preset condition can be the communications status of electric power terminal, RSRP (Reference Signal Receiving
Power, Reference Signal Received Power), distance etc., such as base station selected RSRP reaches the electric power terminal of predetermined value as relaying eventually
End.
S2: link terminal starts D2D listening mode according to activation instruction.
Wherein, link terminal only just starts D2D listening mode in the activation instruction for receiving base station, and link terminal exists
Under D2D listening mode, the D2D communication request of the initiation of other electric power terminals can be detected, if agreeing to D2D communication request, relaying
Terminal will do it feedback.Activation instruction may include occupied resource when link terminal is monitored, including probe power, spy
Survey running time-frequency resource used etc..
S3: when requesting terminal needs return data, start D2D mode, to establish D2D link with link terminal, wherein ask
Asking terminal to be can not be with the electric power terminal of base station direct communication.
Wherein, it after requesting terminal starting D2D mode, can be detected in sounding channel to surrounding broadcast with maximum probe power
Whether signal, link terminal can receive detectable signal in sounding channel monitoring；If receiving detectable signal, can be sent out to requesting terminal
Send feedback.
S4: the channel quality of the D2D link of each link terminal is detected in requesting terminal, and select channel quality it is highest in
After terminal as preferred link terminal, by remaining link terminal alternately link terminal.
S5: requesting terminal is communicated with preferred link terminal, to complete data back.
Wherein, after requesting terminal is communicated with preferred link terminal, relaying biography can be carried out by preferred link terminal
It is defeated, by data back to base station.
In order to reduce unnecessary energy consumption, in the present embodiment, step S2 specifically: link terminal refers to according to activation
It enables and starts timing, and only start D2D listening mode in default timing.
Wherein, after beyond default timing, no matter whether link terminal with other electric power terminals establishes D2D link,
Link terminal will all stop relay function.
In view of the channel quality of the D2D link of link terminal can change, in the present embodiment, relay transmission method
Further include: when requesting terminal is communicated with preferred link terminal, if the channel quality of the D2D link of preferred link terminal is low
In predetermined threshold value or D2D link down, an alternative link terminal is selected to be communicated, to continue to complete data back.
Alternative link terminal can be the link terminal that channel quality is only second to preferred link terminal.Specifically, selection
The step of one alternative link terminal is communicated specifically:
All alternative link terminals are ranked up by requesting terminal according to the sequence of channel quality from high to low；
Requesting terminal sequentially sends D2D communication request to alternative link terminal；
If receiving the feedback of current alternative link terminal, requesting terminal and alternative link terminal establish D2D link simultaneously
It is communicated, if being not received by the feedback of current alternative link terminal, requesting terminal is continued to current alternative link terminal
Next alternative link terminal send D2D communication request, until establishing D2D link.
Further, the step of selecting an alternative link terminal to be communicated further include: if requesting terminal does not connect
The feedback of the last one alternative link terminal is received, then re-starts and sequentially sends D2D communication request to alternative link terminal
Step.
By the above-mentioned means, the relay transmission side of the electric power wireless private network based on terminal direct communication of the embodiment of the present invention
In method, base station pre-selects suitable electric power terminal as link terminal, and only receives base station and issue in activation instruction
It just will start D2D listening mode after terminal, D2D mode can not be can star with the electric power terminal of the base station direct communication in
D2D link is established after terminal, completes the relay transmission of data so as to select suitable electric power terminal, it is possible to reduce discovery
The problems such as D2D response resource contention and network interferences, avoids inappropriate electric power terminal from carrying out D2D communication and causes unnecessary energy
Amount consumption.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (5)
1. a kind of relay transmission method of the electric power wireless private network based on terminal direct communication characterized by comprising
Base station returns the electric power that situation selection meets preset condition according to the access situation and business of electric power terminal in coverage area
Terminal is as link terminal.And activation instruction is issued to the link terminal；
The link terminal starts terminal direct communication D2D listening mode according to the activation instruction；
When requesting terminal needs return data, start D2D mode, to establish D2D link with the link terminal, wherein described
Requesting terminal is can not be with the electric power terminal of the base station direct communication；
The channel quality of the D2D link of each link terminal is detected in the requesting terminal, and selects the highest relaying of channel quality
Terminal is as preferred link terminal, by remaining link terminal alternately link terminal；
The requesting terminal is communicated with the preferred link terminal, to complete data back.
2. relay transmission method according to claim 1, which is characterized in that the link terminal is according to the activation
The step of instruction starting D2D listening mode specifically:
The link terminal starts timing according to the activation instruction, and only starts D2D listening mode in default timing.
3. relay transmission method according to claim 1 or 2, which is characterized in that the relay transmission method further include:
When the requesting terminal is communicated with the preferred link terminal, if the D2D link of the first choice link terminal
Channel quality is lower than predetermined threshold value or D2D link down, selects an alternative link terminal to be communicated, to continue to complete
Data back.
4. relay transmission method according to claim 3, which is characterized in that the alternative link terminal of selection one carries out
The step of communication specifically:
All alternative link terminals are ranked up by the requesting terminal according to the sequence of channel quality from high to low；
The requesting terminal sequentially sends D2D communication request to alternative link terminal；
If receiving the feedback of current alternative link terminal, the requesting terminal and alternative link terminal establish D2D link simultaneously
It is communicated, if being not received by the feedback of current alternative link terminal, the requesting terminal is continued to current alternative relaying
Next alternative link terminal of terminal sends D2D communication request, until establishing D2D link.
5. relay transmission method according to claim 4, which is characterized in that the alternative link terminal of selection one carries out
The step of communication further include:
If the requesting terminal is not received by the feedback of the last one alternative link terminal, re-start sequentially to alternative
Link terminal sends the step of D2D communication request.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910264030.6A CN109890014A (en) | 2019-04-03 | 2019-04-03 | A kind of relay transmission method of the electric power wireless private network based on terminal direct communication |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910264030.6A CN109890014A (en) | 2019-04-03 | 2019-04-03 | A kind of relay transmission method of the electric power wireless private network based on terminal direct communication |
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| CN201910264030.6A Pending CN109890014A (en) | 2019-04-03 | 2019-04-03 | A kind of relay transmission method of the electric power wireless private network based on terminal direct communication |
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Cited By (7)
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| CN110856232A (en) * | 2019-11-12 | 2020-02-28 | 全球能源互联网研究院有限公司 | Relay selection and frequency distribution method and device for electric power wireless private network |
| CN112738722A (en) * | 2020-12-16 | 2021-04-30 | 云南电网有限责任公司 | Communication system and method for power line patrol |
| CN112995960A (en) * | 2021-03-09 | 2021-06-18 | 北京果枝众合科技有限公司 | Data transmission method for straight-through communication of chained networking terminals |
| WO2021134677A1 (en) * | 2019-12-31 | 2021-07-08 | 华为技术有限公司 | Data transmission method, apparatus, and system |
| US11122542B2 (en) * | 2016-06-24 | 2021-09-14 | Lg Electronics Inc. | Signal transmission method for V2X communication in wireless communication system, and device therefor |
| CN113965913A (en) * | 2021-10-19 | 2022-01-21 | 山东电力研究院 | On-line monitoring data transmission method and system |
| WO2022110067A1 (en) * | 2020-11-27 | 2022-06-02 | 北京小米移动软件有限公司 | Measurement sending method and measurement receiving method |
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| US11122542B2 (en) * | 2016-06-24 | 2021-09-14 | Lg Electronics Inc. | Signal transmission method for V2X communication in wireless communication system, and device therefor |
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| CN110856232B (en) * | 2019-11-12 | 2022-02-08 | 全球能源互联网研究院有限公司 | Relay selection and frequency distribution method and device for electric power wireless private network |
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| CN112738722A (en) * | 2020-12-16 | 2021-04-30 | 云南电网有限责任公司 | Communication system and method for power line patrol |
| CN112738722B (en) * | 2020-12-16 | 2024-04-09 | 云南电网有限责任公司 | Communication system and method for power line inspection |
| CN112995960A (en) * | 2021-03-09 | 2021-06-18 | 北京果枝众合科技有限公司 | Data transmission method for straight-through communication of chained networking terminals |
| CN112995960B (en) * | 2021-03-09 | 2023-10-31 | 保定市兆微软件科技有限公司 | Data transmission method for direct communication of chained networking terminal |
| CN113965913A (en) * | 2021-10-19 | 2022-01-21 | 山东电力研究院 | On-line monitoring data transmission method and system |
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Application publication date: 20190614 |