CN105208565A - Physical layer framework for micro-power wireless area coverage electric power communication private network - Google Patents
Physical layer framework for micro-power wireless area coverage electric power communication private network Download PDFInfo
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- CN105208565A CN105208565A CN201510389876.4A CN201510389876A CN105208565A CN 105208565 A CN105208565 A CN 105208565A CN 201510389876 A CN201510389876 A CN 201510389876A CN 105208565 A CN105208565 A CN 105208565A
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- 238000004891 communication Methods 0.000 title claims abstract description 81
- 238000005516 engineering process Methods 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
- 230000001360 synchronised effect Effects 0.000 claims abstract description 4
- 230000007246 mechanism Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 claims description 3
- 230000003321 amplification Effects 0.000 abstract description 2
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 2
- 101100172132 Mus musculus Eif3a gene Proteins 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013499 data model Methods 0.000 description 1
- 230000005059 dormancy Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/18—Network planning tools
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/26—Cell enhancers or enhancement, e.g. for tunnels, building shadow
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
- H04W16/10—Dynamic resource partitioning
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention relates to a physical layer framework for a micro-power wireless area coverage electric power communication private network, which is characterized in that an appropriate micro-power wireless communication platform is adopted to act as a communication physical layer, an effective data coding and decoding model, an appropriate channel multiplexing technology and a frequency-hopping technology based channel selection technology are adopted, the channel multiplexing mode adopts TDMA (time division multiple access) data, FDMA (frequency division multiple access) data and a signal multiplexing model, and a plurality of sub-bands are adopted and multiplexed to the same area in a selected wireless communication frequency band range, thereby realizing synchronous transmission of a plurality of signals in the same area. The physical layer framework provided by the invention for the micro-power wireless area coverage electric power communication private network can realize short-distance power amplification, and can realize area coverage of a communication system; a wireless communication mode is adopted in the area, so that communication lines are not required to be laid; and a micro-power wireless communication system is adopted, and wireless data in the area is guaranteed to be transmitted timely and effectively, thereby ensuring the reliability of data communication in the physical layer.
Description
Technical field
The invention belongs to electric power checkout equipment field, especially a kind of physical layer framework of the region overlay power communication private network wireless for micropower.
Background technology
Intelligent grid communication system is at present primarily of optical fiber telecommunications system, carrier communication system and wireless communication system three kinds of communication mode compositions, wherein communication mainly refers to the communication be made up of wireless public networks such as GPRS and 3G, and the collection that this kind of communication mode has applied to marketing system on a large scale is at present copied in, two distant distribution terminal systems distant with part one.
In existing wireless public network communication system, exist charging costly, wireless signal covers the problem of the multiple deficiency such as not comprehensive.Equally, in fiber optic communication systems, there is construction and lay the cost problem such as costly, in some specific region, is not the communication system solution of optimal extensive laying networking.In addition, in distribution communication system, often equipment is laid and the medium voltage network side of 10KV, and be a more thorny system scheme to the low pressure power taking of equipment, main problem is embodied in following several aspect:
More thorny technical problem in the above-mentioned intelligent grid, adopts comparatively suitable as the communication solution of the specific region in smart electric grid system of micropower wireless system, the main following problem solved in smart electric grid system:
Lay cost and difficulty problem: in intelligent grid communication system, the laying of communication line is a more scabrous construction difficult problem always.
Wireless public network can not all standing problem: wireless public network uses the wireless public network of telecom operators, and in remote areas, partially enclosed space, wireless public network coverage is complete, causes numerous user and power dispatching data not to upload in time.The problem that Reliability of Wireless Communication is not high: owing to adopting the communication system of wireless public network, due to shared teledata transmission network, is comparatively easy to caught by the user that has nothing to do in a large number or disturb, there is larger potential safety hazard.
Distribution network systems mesolow power taking problem: in remote 10KV distribution region, the power taking problem of communication equipment and terminal equipment is the larger technical barrier that puzzlement system is promoted always.Adopting the wireless communication system of low-power consumption, by reducing the mode of power consumption and initiatively dormancy, the power consumption of equipment can be made in mw level, part field adopts battery powered mode can maintain the equipment operation of long period.
In sum, the region power communication private network adopting the communication mode of low-power wireless to build can effectively make up in intelligent grid communication system can not an insoluble system difficult problem, the communication system for intelligent grid builds and provides a kind of newer communication mode.
Summary of the invention
The object of the invention is to overcome prior art deficiency, provide a kind of communication system for intelligent grid to build the physical layer framework providing a kind of region overlay power communication private network wireless for micropower of newer communication mode.
The technical solution used in the present invention is:
A kind of physical layer framework of the region overlay power communication private network wireless for micropower, adopting suitable micro power radio communication platform as communication physical layer, comprise and adopt effective code and decode model, appropriate channel multiplex technique and the channel selecting technology based on frequency hopping, wherein channel multiplexing mode adopts TDMA+FDMA two kinds of data and signal multiplexing model within the scope of the wireless communication frequency band selected, adopt multiple sub-band to be multiplexed in same region, realize multiple signal synchronous transmission in the same area.
And described micro power radio communication platform adopts 230M, 315M, 433M or 868M frequency range.
And described micro power radio communication platform adopts 230M or 868M two frequency ranges,
And the code encoding/decoding mode of described code and decode model adopts non-return-to-zero coding.
And, the passage of described frequency hopping adopts the mechanism of sequence hopping to carry out the selection of frequency band: when micropower wireless terminal node needs to send data, frequency detecting is carried out at the frequency of acquiescence, deposit in case of interferers at frequency band, detect one by one according to frequency hop sequences and expand, until frequency band meets communicating requirement.
And described micro power radio communication platform transmitted power reaches 24dbm, and receiving sensitivity reaches-102dBm.
Advantage of the present invention and good effect are:
The physical layer framework of the region overlay power communication private network wireless for micropower provided by the invention can realize short-range power amplification, the region overlay of communication system can be realized, communication is adopted in a region, do not need to lay communication line, micro power radio communication system is adopted in system, the timely and effective transmission of wireless data in support area, thus ensure that the reliability from physical layer data communication.
Embodiment:
Below by specific embodiment, the invention will be further described, and following examples are descriptive, is not determinate, can not limit protection scope of the present invention with this.
A kind of physical layer framework of the region overlay power communication private network wireless for micropower, adopting suitable micro power radio communication platform as communication physical layer, and based on this communications platform, build the traffic model being applicable to electric power wireless private network, to meet and the area covering communication technology in certain area, in native system, the part hierarchy module of OSI seven layer protocol according to standard network device is carried out the functions expanding of device systems, is specifically divided into following components:
In the structure of wireless communication system, first need to select an operable radio band.According to the regulation of State Radio Regulatory Commission, operable frequency range has the frequency ranges such as 230M, 315M, 433M, 868M.Wherein 230M is the special frequency range of electric power wireless communication system, in order to both meet the requirement of communication distance, also meets communication band quantitative requirement, and this project research approach selects 230M or 868M two frequency ranges.
On physical layer exploitation, reach safe, reliable, efficient data communication requirements, need to build healthy and strong data communication platform, comprising the effective code and decode model of employing, appropriate channel multiplex technique and the channel selecting technology based on frequency hopping, the communication module of concrete physical layer is described below:
A. code encoding/decoding mode is selected: in the present system, can select one comparatively effectively simple coded system: non-return-to-zero coding (NRZ).
B. channel multiplexing mode adopts TDMA+FDMA two kinds of data and signal multiplexing model.First, within the scope of the wireless communication frequency band selected, adopt multiple sub-band to be multiplexed in same region, realize multiple signal synchronous transmission in the same area; Secondly, time because number of channels is limited, number of devices is more, there is multiple equipment and share the situation causing single pass data-reusing in same passage, therefore two kinds of data communication modes of CSMA+TDMA are adopted at single pass data-reusing: adopt in the collision avoidance mechanism sense channel of CSMA whether have data collision, under the prerequisite that data are not conflicted, the data model of TDMA is adopted to carry out communication data to the multi-group data in same passage multiplexing.
C. for the frequency band selection problem of equipment in frequency range, the mechanism of sequence hopping can be adopted to carry out the selection of frequency band: when micropower wireless terminal node needs to send data, first frequency detecting is carried out at the frequency of acquiescence, deposit in case of interferers at frequency band, detect one by one according to frequency hop sequences and expand, until frequency band meets communicating requirement.
Realize certain region overlay, the research and development of the PA module of enhancement mode be carried out.Under the communication environment of accessible model, reach unobstructed communication distance 2KM ~ 3KM; 2 face walls can be penetrated in coverage.Specific performance index is: transmitted power reaches 24dbm, and receiving sensitivity reaches-102dBm.
Although disclose embodiments of the invention for the purpose of illustration, but it will be appreciated by those skilled in the art that: in the spirit and scope not departing from the present invention and claims, various replacement, change and amendment are all possible, therefore, scope of the present invention is not limited to the content disclosed in embodiment.
Claims (6)
1. the physical layer framework for the wireless region overlay power communication private network of micropower, it is characterized in that: adopting suitable micro power radio communication platform as communication physical layer, comprise and adopt effective code and decode model, appropriate channel multiplex technique and the channel selecting technology based on frequency hopping, wherein channel multiplexing mode adopts TDMA+FDMA two kinds of data and signal multiplexing model within the scope of the wireless communication frequency band selected, adopt multiple sub-band to be multiplexed in same region, realize multiple signal synchronous transmission in the same area.
2. the physical layer framework of the region overlay power communication private network wireless for micropower according to claim 1, is characterized in that: described micro power radio communication platform adopts 230M, 315M, 433M or 868M frequency range.
3. the physical layer framework of the region overlay power communication private network wireless for micropower according to claim 2, is characterized in that: described micro power radio communication platform adopts 230M or 868M two frequency ranges.
4. the physical layer framework of the region overlay power communication private network wireless for micropower according to claim 1, is characterized in that: the code encoding/decoding mode of described code and decode model adopts non-return-to-zero coding.
5. the physical layer framework of the region overlay power communication private network wireless for micropower according to claim 1, it is characterized in that: the passage of described frequency hopping adopts the mechanism of sequence hopping to carry out the selection of frequency band: when micropower wireless terminal node needs to send data, frequency detecting is carried out at the frequency of acquiescence, deposit in case of interferers at frequency band, detect one by one according to frequency hop sequences and expand, until frequency band meets communicating requirement.
6. the physical layer framework of the region overlay power communication private network wireless for micropower according to claim 1, is characterized in that: described micro power radio communication platform transmitted power reaches 24dbm, and receiving sensitivity reaches-102dBm.
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| CN201510389876.4A CN105208565A (en) | 2015-07-06 | 2015-07-06 | Physical layer framework for micro-power wireless area coverage electric power communication private network |
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| CN201510389876.4A CN105208565A (en) | 2015-07-06 | 2015-07-06 | Physical layer framework for micro-power wireless area coverage electric power communication private network |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1208517A (en) * | 1995-12-11 | 1999-02-17 | 艾利森公司 | Re-orthogonalization of wideband CDMA signals |
| CN102984754A (en) * | 2012-11-06 | 2013-03-20 | 深圳市国电科技通信有限公司 | Method of wireless electricity transmission based on orthogonal frequency division multiplexing (OFDM) |
| CN104201781A (en) * | 2014-09-10 | 2014-12-10 | 国家电网公司 | Small-power wireless private network system applied to smart grid |
-
2015
- 2015-07-06 CN CN201510389876.4A patent/CN105208565A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1208517A (en) * | 1995-12-11 | 1999-02-17 | 艾利森公司 | Re-orthogonalization of wideband CDMA signals |
| CN102984754A (en) * | 2012-11-06 | 2013-03-20 | 深圳市国电科技通信有限公司 | Method of wireless electricity transmission based on orthogonal frequency division multiplexing (OFDM) |
| CN104201781A (en) * | 2014-09-10 | 2014-12-10 | 国家电网公司 | Small-power wireless private network system applied to smart grid |
Non-Patent Citations (1)
| Title |
|---|
| 胡致远 等: "微功率无线通信技术在电力线路中的适应性分析", 《电力***自动化》 * |
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