CN113206685B - Dual-mode networking method based on HPLC and micropower wireless - Google Patents

Dual-mode networking method based on HPLC and micropower wireless Download PDF

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CN113206685B
CN113206685B CN202110463592.0A CN202110463592A CN113206685B CN 113206685 B CN113206685 B CN 113206685B CN 202110463592 A CN202110463592 A CN 202110463592A CN 113206685 B CN113206685 B CN 113206685B
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network
node
hplc
wireless
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CN113206685A (en
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郑德官
崔兴攀
任玉军
张国军
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Suzhou Zhuozhi Chuangxin Electronic Technology Co ltd
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Suzhou Zhuozhi Chuangxin Electronic Technology Co ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H04B3/544—Setting up communications; Call and signalling arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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

Abstract

The invention discloses a dual-mode networking method based on HPLC and micropower wireless, which comprises the steps that a concentrator groups all sub-nodes supporting a standard HPLC protocol into an HPLC network through the HPLC protocol; the concentrator groups all sub-nodes supporting the micro-power wireless RF protocol into a micro-power wireless network through wireless or forwarding through an HPLC network; the concentrator collects field intensity and configures sub-nodes by forwarding through a micro-power wireless network or an HPLC network; after the whole network is networked, the concentrator simultaneously maintains two networks, and the subnodes which hold standard HPLC and micropower wireless RF dual protocol stacks are used as relays. The invention fully exerts the advantages of high HPLC transmission speed and long transmission distance, combines the characteristics that micropower wireless is not limited by a power transmission line and the influence of interference of high-power electric equipment is small, adopts a path selection strategy that an HPLC network takes priority on a micropower wireless network as supplement, and constructs a dual-protocol stack network with complementary advantages.

Description

Dual-mode networking method based on HPLC and micropower wireless
Technical Field
The invention relates to a dual-mode networking technology, in particular to a dual-mode networking method based on HPLC and micropower wireless, which is applied to the fields of power utilization information acquisition and Internet of things.
Background
The existing dual-mode products (dual stack network) mainly have two schemes: one is an HPLC/RF dual-protocol stack scheme which simultaneously supports HPLC and RF micro-power, the dual stacks are respectively networked, the micro-power is the main when reading data, and the HPLC is the auxiliary; the other scheme is an HPLC dual-channel scheme which only supports an HPLC protocol, dual-channel communication is realized by virtue of micropower wireless, the HPLC protocol is used when data are copied and read, micropower wireless forwarding is used for forwarding an HPLC data frame when certain nodes fail to copy and read, and the scheme does not support an RF micropower standard protocol.
The networking of the HPLC/RF dual stack scheme is shown in FIG. 1. In fig. 1, H represents HPLC, R represents micro-power wireless, the solid black line represents HPLC network, and the dotted line represents micro-power RF network. As can be seen from FIG. 1, the STAs 1-6 are all already in the network HPLC network, the STAs 1-3 can smoothly enter the network RF network, and when the STAs 4-6 are far away from the STAs 1-3, the micropower wireless RF cannot cover the network, so that the network cannot be accessed. The micropower RF is preferentially used during data reading, HPLC (high performance liquid chromatography) is used for complementary reading after STA 4-STA 6 reading fails, and the RF speed of 10K is lower than the HPLC speed of 1M.
The networking of the HPLC two-channel scheme is shown in fig. 2. In fig. 2, H represents HPLC, a solid black line represents an HPLC network, and a dotted line represents a wireless signal. As can be seen from fig. 2, STAs 1 to 6 are all connected to the network HPLC network, but when reading data of STA4 to STA6 by HPLC fails due to unstable signal interference, STAs 1 to STA3 try to forward a next HPLC data frame with wireless assistance, and if the distance is too far, wireless cannot communicate normally. And the STA 1-STA 6 are required to support modules of an HPLC dual-channel scheme, so that the interconnection and the interoperability are poor.
It follows that both of the above solutions present respective drawbacks and disadvantages. The HPLC/RF dual-protocol stack scheme can only make up and copy data under the condition of good dual-network coverage, but cannot make up the defect of small micropower coverage, and the speed is slower by taking micropower as the main speed; however, the HPLC dual-channel scheme does not support the micropower standard protocol, cannot interconnect and communicate with the micropower standard module, and requires replacement of modules at both ends, which makes field construction difficult.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a dual-mode networking method based on HPLC and micropower wireless, which fully exerts the advantages of high HPLC transmission speed and long transmission distance on the basis of the existing HPLC and micropower wireless standard protocol, and combines the characteristics of no limitation of a power transmission line and small interference influence of high-power electric equipment on micropower to establish a dual-protocol stack network with complementary advantages.
In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:
a dual-mode networking method based on HPLC and micropower wireless comprises the following steps:
1) after files are synchronized, the concentrator firstly initiates a standard HPLC networking process, and all child nodes supporting a standard HPLC protocol are connected to form an HPLC network;
2) then, a micropower wireless RF networking process is initiated, the concentrator firstly sends out a beacon frame through the wireless RF, and simultaneously broadcasts the beacon frame in a well-organized HPLC network;
3) all sub-nodes supporting the micro-power wireless RF protocol can send regenerative beacons in own time slots after receiving the beacons, and the sub-nodes supporting the standard HPLC and micro-power wireless RF dual protocol stacks can simultaneously send the regenerative beacons in the wireless RF and HPLC networks;
4) then collecting field intensity, enabling the sub-nodes supporting the micro-power wireless RF protocol to normally transmit and receive through wireless RF, enabling the sub-nodes supporting the standard HPLC and micro-power wireless RF dual-protocol stack to simultaneously transmit and receive in the micro-power wireless RF network and the HPLC network, and being responsible for communication conversion between the micro-power wireless RF network and the HPLC network in the field intensity collecting process;
5) finally, configuring the child nodes, wherein the child nodes supporting the micro-power wireless RF protocol perform normal receiving and sending through the wireless RF, and the child nodes supporting the standard HPLC and micro-power wireless RF dual-protocol stack perform receiving and sending in the micro-power wireless RF network and the HPLC network at the same time, and are responsible for communication conversion between the micro-power wireless RF network and the HPLC network in the process of configuring the child nodes;
6) after the whole network is networked, all the sub-nodes supporting the standard HPLC protocol are in the HPLC network, all the sub-nodes supporting the micro-power wireless RF protocol are in the micro-power wireless RF network, the sub-nodes supporting the standard HPLC and the micro-power wireless RF dual protocol stack are used as relays, and are simultaneously in the HPLC network and the micro-power wireless RF network.
Further, in order to maintain compatibility and interconnection interoperability with existing HPLC and micro-power wireless RF, based on the existing HPLC and micro-power RF protocols, a message port number type is added to an application layer of the HPLC protocol for data type differentiation, for example, a type 0x13 is added;
the existing port number types are 0x12 for upgrading service, 0x11 for other services, and 0x13 for mutual conversion service of HPLC and RF data packets; the RF data packets are encapsulated as whole as application layer data for HPLC with a port number set to 0x13 for transmission in the HPLC network using SOF packets.
Further, the concentrator is used as a center, the sub-nodes are arranged in a certain range around the concentrator, and the concentrator supports standard HPLC and micro-power wireless RF dual-protocol stacks.
Further, the sub-nodes may be divided into four different kinds of sub-nodes, i.e., a first sub-node supporting the micro-power wireless RF protocol, a second sub-node supporting the standard HPLC protocol, a third sub-node supporting the standard HPLC and the micro-power wireless RF protocol, and a fourth sub-node supporting the micro-power wireless RF protocol, according to the communication protocol supported by the sub-nodes and the distance from the concentrator; the first sub-node is located within a micro-power wireless RF protocol communication range of the concentrator, the first sub-node and the concentrator implement short-range communication through a micro-power wireless RF network, the second sub-node and the third sub-node are both located within an HPLC protocol communication range of the concentrator, the second sub-node and the third sub-node and the concentrator implement long-range communication through an HPLC network, the fourth sub-node is located outside the micro-power wireless RF protocol communication range of the concentrator but within the micro-power wireless RF protocol communication range of the third sub-node, the fourth sub-node and the third sub-node implement short-range communication through a micro-power wireless RF network, and the concentrator implement long-range communication with the fourth sub-node through the third sub-node relaying the micro-power wireless RF protocol, therefore, the coverage area of the micropower wireless RF is enlarged, and the networking problem of a mixed station area is solved.
It should be noted that the fourth sub-node and the first sub-node may be the same module only supporting RF protocol, except that there is a difference in distance between the fourth sub-node and the first sub-node and the concentrator.
Further, the process of HPLC networking is that the concentrator groups all the second child nodes and the third child nodes supporting the standard HPLC protocol into the HPLC network, thereby completing the networking of the HPLC network.
Further, the specific process of micropower wireless RF networking is as follows:
1) the concentrator sends out a wireless beacon frame through wireless RF, and simultaneously broadcasts the wireless beacon frame in an HPLC network;
2) after receiving the wireless beacon through the wireless RF, the first child node directly sends a regeneration beacon to the concentrator through the wireless RF in the time slot of the first child node;
3) after receiving the beacon frame through the HPLC network, the third child node directly sends a regenerated beacon to the concentrator through the HPLC network on one hand, and forwards the regenerated beacon to the fourth child node through wireless RF through conversion of a communication protocol on the other hand;
4) and after receiving the regenerative beacon through the wireless RF, the fourth sub-node sends the regenerative beacon to the third sub-node through the wireless RF in the time slot of the fourth sub-node, so that the beacon forwarding of the micro-power wireless RF network is completed.
Further, the specific process of collecting the field intensity is as follows:
1) the concentrator sends out a field intensity collecting signal through a micropower wireless RF network, and the field intensity collecting signal is unicast in an HPLC network;
2) after receiving the collected field intensity signal through the micropower wireless RF network, the first sub-node directly makes a collected field intensity response to the concentrator through the micropower wireless RF network;
3) after receiving the collected field intensity signals through the HPLC network, the third sub-node makes collected field intensity responses to the concentrator directly through the HPLC network on one hand, and forwards the collected field intensity signals to the fourth sub-node through the micropower wireless RF network through the conversion of a communication protocol on the other hand;
4) after receiving the collected field intensity signal through the micropower wireless RF network, the fourth sub-node makes a collected field intensity response to the third sub-node through the micropower wireless RF network;
5) after receiving the collected field intensity response of the fourth sub-node through the micro-power wireless RF network, the third sub-node forwards the collected field intensity response of the fourth sub-node to the concentrator through the HPLC network instead through the conversion of a communication protocol, thereby completing the field intensity collection.
Further, the specific process of configuring the child node is as follows:
1) carrying out a sub-node configuration process, wherein the concentrator sends out a sub-node configuration signal through a micro-power wireless RF network, and simultaneously unicasts the sub-node configuration signal in an HPLC network;
2) after receiving the configuration sub-node signal through the micro-power wireless RF network, the first sub-node directly makes a configuration sub-node response to the concentrator through the wireless RF;
3) after receiving the configuration child node signal through the HPLC network, the third child node directly makes a configuration child node response to the concentrator through the HPLC network on the one hand, and forwards the configuration child node signal to the fourth child node through the micro-power wireless RF network through the conversion of the communication protocol on the other hand;
4) after receiving the configuration sub-node signal through the micro-power wireless RF network, the fourth sub-node makes a configuration sub-node response to the third sub-node through the micro-power wireless RF network;
5) after receiving the configuration child node response of the fourth child node through the micro-power wireless RF network, the third child node forwards the configuration child node response of the fourth child node to the concentrator through the HPLC network instead through the conversion of the communication protocol, thereby completing the configuration child node.
Further, after the whole network is networked, the concentrator groups the second child node and the third child node into the HPLC network through a standard HPLC protocol, and the concentrator groups the first child node into the micro-power wireless RF network through a micro-power wireless RF protocol, and simultaneously, the concentrator groups the third child node and the fourth child node into the micro-power wireless RF network through the micro-power wireless RF protocol, with the third child node serving as a relay.
Furthermore, the path selection strategy of the concentrator takes an HPLC network as priority and a micro-power wireless RF network as a supplement principle, namely when the sub-node data is copied, the high-speed HPLC network is firstly used for communication, and if the sub-node data fails for a plurality of times, the micro-power wireless RF network is used for copying the data; under the condition that a long-distance micro-power wireless RF network cannot communicate, the HPLC network is used for transferring wireless RF data so as to effectively expand the coverage range of the micro-power wireless RF network.
That is to say, if a sub-node supporting both the standard HPLC and the micro-power wireless RF protocol is in both the HPLC network and the micro-power wireless RF network, the sub-node will preferentially select the HPLC network with the higher speed for communication, and will reselect the micro-power wireless RF network for communication only after a plurality of failed attempts for communication.
The HPLC communication technology adopted by the invention has the communication code rate higher than 1Mbps and uses a power transmission line for long transmission distance; the invention adopts the micro-power wireless RF communication technology, is not limited by the power transmission line and has little noise influence on high-power electric equipment. The invention combines the two communication technologies according to the principle of HPLC priority and micropower wireless RF supplement and exerts respective advantages, thereby establishing a stable dual-protocol stack communication network.
The existing dual-network schemes are independent dual networks, an HPLC network can only transmit and network on a power line, RF can only use wireless transmission and network, and conversion between transmission modes and protocols is avoided. On the basis of the existing HPLC network, the invention enables the micropower wireless RF network to transmit and forward by means of an HPLC protocol and a power line, realizes the wired transmission of the micropower wireless RF, and not only expands the range, but also has higher speed.
Compared with the prior art, the invention has the beneficial effects that:
on the basis of the existing HPLC and micropower wireless standard protocol, the invention fully exerts the advantages of high HPLC transmission speed and long transmission distance, combines the characteristics of no limitation of the micropower wireless by a power transmission line and small interference influence of high-power electric equipment, adopts the preference of an HPLC network and a micropower wireless RF network as a supplementary path selection strategy, and constructs a stable dual-protocol stack network, thereby realizing the complementation of dual-network advantages and exerting the respective advantages.
Therefore, the HPLC and micropower wireless dual-protocol stack network established by the invention has the advantages of wide coverage range, high communication speed, good stability, strong interconnection interoperability, small field construction difficulty and the like, is expected to be widely popularized in the fields of smart power grids, Internet of things, big data and the like, and has good application prospect.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is made with reference to the accompanying drawings. The detailed description of the present invention is given in detail by the following examples and the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic diagram of a prior art networking of an HPLC/RF dual stack scheme;
FIG. 2 is a schematic diagram of a networking of an HPLC dual-channel scheme in the prior art;
FIG. 3 is a flow chart of dual-mode networking based on HPLC and micropower wireless according to the present invention;
FIG. 4 is a schematic diagram of a networking of the present invention;
FIG. 5 is a schematic diagram of another networking of the present invention;
fig. 6 is a schematic networking diagram of the present invention applied to residential cells.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in combination with embodiments.
Referring to fig. 3, a dual-mode networking method based on HPLC and micropower wireless includes the following steps:
1) setting a concentrator CCO, wherein the concentrator CCO supports a standard HPLC and micro-power wireless RF dual-protocol stack and is arranged in a plurality of sub-nodes STA capable of communicating with the concentrator CCO within a certain range around the concentrator CCO as a center;
the sub-node STA can be divided into four different kinds of sub-nodes, namely a first sub-node STA1, a second sub-node STA2, a third sub-node STA3 and a fourth sub-node STA4 according to the communication protocol supported by the sub-node STA and the distance from the concentrator CCO; wherein the content of the first and second substances,
the first sub-node STA1 supports a micro-power wireless RF protocol, and is located within a communication range of the micro-power wireless RF protocol of the concentrator CCO;
the second sub-node STA2 supports a standard HPLC protocol, and is located within the communication range of the HPLC protocol of the concentrator CCO;
the third sub-node STA3 supports standard HPLC and micro-power wireless RF dual protocols and is positioned within the communication range of the HPLC protocol of the concentrator CCO;
the fourth sub-node STA4 supports a micro-power wireless RF protocol, is outside the micro-power wireless RF protocol communication range of the concentrator CCO, but is within the micro-power wireless RF protocol communication range of the third sub-node STA 3;
it should be noted that the fourth sub-node STA4 and the first sub-node STA1 may be the same module supporting only RF protocol, except for the difference in distance between them and the concentrator CCO.
In order to maintain compatibility and interconnection interoperability of the existing HPLC and micro-power wireless RF, a message port number type is added to an application layer of an HPLC protocol for data type discrimination, for example, a type 0x13 is added on the basis of the existing HPLC and micro-power RF protocol. The existing port number types are 0x12 for upgrade service, 0x11 for other services, and 0x13 for HPLC and RF data packet interchange service is newly added; the RF data packets are encapsulated as whole as application layer data for HPLC with a port number set to 0x13 for transmission in the HPLC network using SOF packets.
2) After files are synchronized, the concentrator CCO firstly initiates a standard HPLC networking process, and all the second sub-node STA2 and the third sub-node STA3 which support a standard HPLC protocol are connected to the network, so that networking of an HPLC network is completed;
3) then, initiating a micropower wireless RF networking process, wherein the specific process comprises the following steps:
3.1) the concentrator CCO sends out a wireless beacon frame through wireless RF, and simultaneously broadcasts the wireless beacon frame in an HPLC network;
3.2) after receiving the wireless beacon through the wireless RF, the first sub-node STA1 directly sends a regenerative beacon to the concentrator CCO through the wireless RF in the time slot;
3.3) after receiving the beacon frame through the HPLC network, the third child node STA3 directly sends the regenerated beacon to the concentrator CCO through the HPLC network, and forwards the regenerated beacon to the fourth child node STA4 through wireless RF after the communication protocol conversion;
3.4) after receiving the regenerated beacon through the wireless RF, the fourth sub-node STA4 sends the regenerated beacon to the third sub-node STA3 through the wireless RF in the time slot of the fourth sub-node STA, thereby completing the beacon forwarding of the micro-power wireless RF network;
4) and then collecting the field intensity, wherein the specific process comprises the following steps:
4.1) the concentrator CCO sends out a collected field intensity signal through a micropower wireless RF network, and unicasts the collected field intensity signal in an HPLC network;
4.2) after receiving the collected field intensity signal through the micropower wireless RF network, the first sub-node STA1 directly makes a collected field intensity response to the concentrator CCO through the micropower wireless RF network;
4.3) after receiving the collected field intensity signal by the third sub-node STA3 through the HPLC network, on one hand, the collection field intensity response is directly sent to the concentrator CCO through the HPLC network, and on the other hand, the collection field intensity signal is forwarded to the fourth sub-node STA4 through the micropower wireless RF network after the conversion of the communication protocol;
4.4) after receiving the collected field intensity signal by the fourth sub-node STA4 through the micro-power wireless RF network, making a collected field intensity response to the third sub-node STA3 through the micro-power wireless RF network;
4.5) after receiving the collection field intensity response of the fourth sub-node STA4 through the micropower wireless RF network, the third sub-node STA3 forwards the collection field intensity response of the fourth sub-node STA4 to the concentrator CCO through the conversion of a communication protocol, so that the field intensity collection is completed;
5) and finally, configuring the child nodes, wherein the specific process comprises the following steps:
5.1) carrying out a sub-node configuration process, wherein the concentrator CCO sends out a sub-node configuration signal through a micro-power wireless RF network, and simultaneously unicasts the sub-node configuration signal in an HPLC network;
5.2) after the first sub-node STA1 receives the configuration sub-node signal through a micro-power wireless RF network, the first sub-node STA1 directly makes a configuration sub-node response to the concentrator CCO through wireless RF;
5.3) after receiving the configuration sub-node signal by the third sub-node STA3 through the HPLC network, on one hand, the configuration sub-node response is directly sent to the concentrator CCO through the HPLC network, and on the other hand, the configuration sub-node signal is forwarded to the fourth sub-node STA4 through the micro-power wireless RF network after the communication protocol conversion;
5.4) after receiving the configuration sub-node signal through the micropower wireless RF network, the fourth sub-node STA4 makes a configuration sub-node response to the third sub-node STA3 through the micropower wireless RF network;
5.5) after receiving the configuration sub-node response of the fourth sub-node STA4 through the micropower wireless RF network, the third sub-node STA3 forwards the configuration sub-node response of the fourth sub-node STA4 to the concentrator CCO through the HPLC network after the conversion of a communication protocol, thereby completing the configuration sub-node;
6) after the whole network is networked, the concentrator CCO groups the second sub-node STA2 and the third sub-node STA3 into an HPLC network through a standard HPLC protocol, the concentrator CCO groups the first sub-node STA1 into a micro-power wireless RF network through a micro-power wireless RF protocol, and simultaneously the concentrator CCO groups the third sub-node STA3 as a relay and the third sub-node STA3 and the fourth sub-node STA4 into the micro-power wireless RF network through the micro-power wireless RF protocol.
7) Setting a path selection strategy of the CCO, and adopting a principle of taking an HPLC network as priority and a micropower wireless RF network as supplement, namely when transcribing the data of the child nodes, firstly using a high-speed HPLC network for communication, and if the data fails for a plurality of times, using the micropower wireless RF network for transcribing the data; under the condition that a long-distance micro-power wireless RF network cannot communicate, the HPLC network is used for transferring wireless RF data so as to effectively expand the coverage range of the micro-power wireless RF network.
That is, if a child node supporting both the standard HPLC and the micro-power wireless RF protocol is in both the HPLC network and the micro-power wireless RF network, the child node will preferentially select the HPLC network with the higher speed for communication, and will reselect the micro-power wireless RF network for communication only after a plurality of failed communication attempts.
As a preferred embodiment, referring to fig. 4, after networking, on one hand, the concentrator CCO is communicatively connected to the first sub-nodes STA1-1 and STA1-2 through a micro-power wireless RF network, on the other hand, the concentrator CCO is communicatively connected to the second sub-nodes STA2-1 and STA2-2 and the third sub-node STA3 through an HPLC network, on the other hand, the third sub-node STA3 is communicatively connected to the fourth sub-nodes STA4-1, STA4-2 and STA4-3 through a micro-power wireless RF network, and the third sub-node STA3 serves as a relay and is responsible for HPLC and RF conversion to implement long-distance communication connection between the concentrator CCO and the fourth sub-nodes STA4-1, STA4-2 and STA 4-3.
As a preferred embodiment, referring to fig. 5, on the basis of the embodiment of fig. 4, one or more of the second child node STAs 2-3 may be selected as a primary relay, and the third child node STA3 may be selected as a secondary intermediate. In this way, a fifth sub-node STA5-1, STA5-2 may be added in the dual-mode network, said fifth sub-node STA5-1, STA5-2 also only supporting standard HPLC protocols, being outside the communication range of the standard HPLC protocol of said concentrator CCO, but being within the communication range of the HPLC protocol of said concentrator CCO.
Referring to fig. 5, after networking, the concentrator CCO is communicatively connected to the first sub-nodes STA1-1 and STA1-2 through a micro-power wireless RF network on one hand, and the concentrator CCO is communicatively connected to the second sub-nodes STA2-1, STA2-2 and STA2-3 through an HPLC network on the other hand, where the second sub-node STA2-3 serving as a primary relay may be further communicatively connected to one or more of the fifth sub-nodes STA5-1 and STA5-2 through an HPLC network in addition to one or more of the third sub-nodes STA3 through an HPLC network, the fifth sub-nodes STA5-1 and STA5-2 serve as a primary relay through the second sub-node STA2-3 corresponding to the fifth sub-node STA5-1 and STA5-2, so as to implement a long-distance communication connection with the concentrator CCO, and the third sub-node STA3 is communicatively connected to the fourth sub-node STA4-1 through a micro-power wireless RF network, STA4-2 and STA4-3 are in communication connection, the fourth sub-node STA4-1, STA4-2 and STA4-3 realize long-distance communication connection with the concentrator CCO through two-stage relay of the corresponding third sub-node STA3 and the corresponding second sub-node STA 2-3.
According to the principle of the embodiment of fig. 5, the present invention may further provide a multi-layer relay between the second sub-node STA2-3 and the third sub-node STA3 as a primary relay, thereby satisfying a larger coverage.
The HPLC communication technology adopted by the invention has the communication code rate higher than 1Mbps and uses a power transmission line for long transmission distance; the invention adopts the micro-power wireless RF communication technology, is not limited by the power transmission line and has little noise influence on high-power electric equipment. The invention combines the two communication technologies according to the principle of HPLC priority and micropower wireless RF supplement and exerts respective advantages, thereby establishing a stable dual-protocol stack communication network.
The existing dual-network schemes are independent dual networks, an HPLC network can only transmit and network on a power line, RF can only use wireless transmission and network, and conversion between transmission modes and protocols is avoided. On the basis of the existing HPLC network, the invention enables the micropower wireless RF network to transmit and forward by means of an HPLC protocol and a power line, realizes the wired transmission of the micropower wireless RF, and not only expands the range, but also has higher speed.
The general design concept of the invention is as follows:
1. the concentrator CCO and the third sub-node STA3 both support standard HPLC and micro-power wireless RF dual-protocol stacks, support independent networking of respective protocols, and can be interconnected with other factory standard HPLC modules or micro-power RF modules.
2. The HPLC protocol is extended, so that the concentrator CCO and the third sub-node STA3 both have the capability of transmitting and receiving wireless RF data through the HPLC protocol encapsulation.
3. When the micropower wireless RF network is established, RF data packets are wirelessly transmitted and received, and simultaneously, HPLC protocol is used for packaging in the HPLC network and then synchronous transmission and reception are carried out, so that the micropower wireless RF network is perfected by utilizing the advantages of HPLC transmission distance and speed.
Taking a residential community as an example, a plurality of unit buildings are arranged in the residential community, a micro-power wireless RF module is arranged in an original electric meter box, and at least one concentrator is required to be arranged in each building, so that a micro-power wireless RF network is established.
Referring to fig. 6, the existing residential cell is modified, and the dual-mode network based on HPLC and micro-power wireless of the present invention is used to replace the original micro-power wireless RF network. From now on, concentrator CCO is moved to the distribution room outside the building, and the communication module of most user's ammeter in the unit building is replaced by HPLC communication module, such as user's ammeter 1~3, and only a small part of user's ammeter probably can't be replaced because of various reasons, need still use the wireless RF module of micropower, such as user's ammeter 5~ 7. And at least one user electric meter with a moderate user position is selected in each building, and the original micro-power wireless RF module is kept as a relay while the HPLC communication module is additionally arranged, such as the user electric meter 4.
In fig. 6, the user electricity meters 1 and 2 select modules of fifth sub-nodes STA5-1 and STA5-2, the user electricity meter 3 selects a module of second sub-node STA2 and uses the module as a primary relay, the user electricity meters 1 and 2 communicate with the concentrator CCO through the user electricity meter 3, the user electricity meter 4 selects a module of third sub-node STA3 and uses the module as a secondary proxy, the user electricity meters 5 to 7 select modules of fourth sub-nodes STA4-1, STA4-2 and STA4-3, and the user electricity meters 5 to 7 communicate with the concentrator CCO through the secondary relay of the user electricity meter 4 and the primary relay of the user electricity meter 3.
After the transformation is finished, the user electric meters supporting the HPLC protocol and the micro-power wireless RF protocol in each building of the community are mixed, the closest distance between the concentrator and the user electric meters supporting the HPLC protocol can exceed 120 meters, the two networks of the HPLC and the micro-power wireless RF are maintained simultaneously, and the concentrator takes the user electric meter supporting the HPLC/micro-power wireless RF protocol as a relay to expand the coverage range of the wireless RF network and realize the advantage complementation of the two networks, so that the problems that the coverage range is small, the communication speed is low, the stability is poor and the like which cannot be solved by the conventional networking scheme are solved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. A dual-mode networking method based on HPLC and micro-power wireless is characterized in that a concentrator (CCO) is used as a center, a sub-node (STA) is arranged in a certain range around the concentrator (CCO), and the concentrator (CCO) supports a standard HPLC and micro-power wireless RF dual-protocol stack; the method comprises the following steps:
after files are synchronized, the concentrator (CCO) firstly initiates a standard HPLC networking process, and all sub-nodes (STA) supporting a standard HPLC protocol are connected to form an HPLC network;
then, a micropower wireless RF networking process is initiated, the concentrator (CCO) firstly sends out a beacon frame through the wireless RF, and simultaneously broadcasts the beacon frame in a well-grouped HPLC network;
all sub-nodes (STA) supporting the micro-power wireless RF protocol can send regenerative beacons in own time slots after receiving the beacons, and the sub-nodes (STA) supporting the standard HPLC and micro-power wireless RF dual protocol stack can send the regenerative beacons in the wireless RF and HPLC networks simultaneously;
then collecting field intensity, a sub-node (STA) supporting a micro-power wireless RF protocol normally collects the receiving and responding of field intensity signals through wireless RF, and the sub-node (STA) supporting a standard HPLC and micro-power wireless RF dual protocol stack can simultaneously receive and respond the collected field intensity signals in a micro-power wireless RF network and an HPLC network and is responsible for communication conversion between the micro-power wireless RF network and the HPLC network in the process of collecting the field intensity;
finally, configuring the sub-nodes, wherein the sub-nodes (STA) supporting the micro-power wireless RF protocol normally configure the receiving and responding of the sub-node signals through the wireless RF, and the sub-nodes (STA) supporting the standard HPLC and micro-power wireless RF dual protocol stack can simultaneously configure the receiving and responding of the sub-node signals in the micro-power wireless RF network and the HPLC network and are responsible for communication conversion between the micro-power wireless RF network and the HPLC network in the process of configuring the sub-nodes;
after the whole network is networked, all sub-nodes (STA) supporting a standard HPLC protocol are in the HPLC network, all sub-nodes (STA) supporting a micro-power wireless RF protocol are in the micro-power wireless RF network, and the sub-nodes (STA) supporting a standard HPLC and a micro-power wireless RF dual-protocol stack are used as relays and are simultaneously in the HPLC network and the micro-power wireless RF network;
the path selection strategy of the concentrator (CCO) takes an HPLC network as priority and a micro-power wireless RF network as supplement, namely, the HPLC network is firstly used for communication when the sub-node data is copied, and the micro-power wireless RF network is used for copying the data after the sub-node data fails for a plurality of times; under the condition that a long-distance micro-power wireless RF network cannot communicate, the HPLC network is used for transferring wireless RF data so as to effectively expand the coverage range of the micro-power wireless RF network.
2. The dual-mode networking method based on HPLC and micropower wireless of claim 1, wherein: in order to keep the compatibility and interconnection interoperability of the existing HPLC and micropower wireless RF, a message port number type is added in an application layer of an HPLC protocol for data type distinguishing on the basis of the existing HPLC and micropower RF protocol, and the method is responsible for the mutual conversion service of HPLC and RF data packets; the RF data packets are encapsulated as whole HPLC application layer data and are transmitted over the HPLC network using SOF packets.
3. The dual-mode networking method based on HPLC and micropower wireless of claim 1, wherein: the sub-nodes (STA) are divided into four different kinds of sub-nodes, namely a first sub-node (STA 1), a second sub-node (STA 2), a third sub-node (STA 3) and a fourth sub-node (STA 4) according to the communication protocols supported by the sub-nodes (STA) and the distance from the concentrator (CCO);
the first sub-node (STA 1) supports a micro-power wireless RF protocol, is located within the communication range of the micro-power wireless RF protocol of the concentrator (CCO), and the first sub-node (STA 1) and the concentrator (CCO) realize short-range communication through a micro-power wireless RF network;
the second sub-node (STA 2) supports standard HPLC protocol and is located in the communication range of the HPLC protocol of the concentrator (CCO), and the second sub-node (STA 2) and the concentrator (CCO) realize long-distance communication through an HPLC network;
the third sub-node (STA 3) supports standard HPLC and micro-power wireless RF dual protocols and is positioned in the HPLC protocol communication range of the concentrator (CCO), and the third sub-node (STA 3) and the concentrator (CCO) realize long-distance communication through an HPLC network;
the fourth sub-node (STA 4) supports a micro-power wireless RF protocol, is located outside the micro-power wireless RF protocol communication range of the concentrator (CCO), but is located within the micro-power wireless RF protocol communication range of the third sub-node (STA 3), the fourth sub-node (STA 4) and the third sub-node (STA 3) implement short-range communication through a micro-power wireless RF network, and the concentrator (CCO) implements long-range communication with the fourth sub-node (STA 4) through the third sub-node (STA 3) relay micro-power wireless RF protocol.
4. A dual-mode networking method based on HPLC and micropower wireless according to claim 3, wherein: the procedure of HPLC networking is that the concentrator (CCO) groups all the second sub-node (STA 2) and the third sub-node (STA 3) supporting the standard HPLC protocol into the HPLC network, thereby completing the networking of the HPLC network.
5. The dual-mode networking method based on HPLC and micropower wireless of claim 3, wherein the specific process of micropower wireless RF networking is as follows:
the concentrator (CCO) sends out a wireless beacon frame through wireless RF, and simultaneously broadcasts the wireless beacon frame in an HPLC network;
after receiving the wireless beacon through the wireless RF, the first sub-node (STA 1) directly sends a regenerative beacon to the concentrator (CCO) through the wireless RF in the time slot;
after receiving the beacon frame through the HPLC network, the third child node (STA 3) transmits the regenerated beacon directly to the concentrator (CCO) through the HPLC network, and forwards the regenerated beacon to the fourth child node (STA 4) through wireless RF after the communication protocol is converted;
after receiving the regenerated beacon through the wireless RF, the fourth sub-node (STA 4) transmits the regenerated beacon to the third sub-node (STA 3) through the wireless RF in its time slot, thereby completing the beacon forwarding of the micro-power wireless RF network.
6. The HPLC and micropower wireless based dual-mode networking method of claim 3, wherein the specific process of field intensity collection is as follows:
1) the concentrator (CCO) sends out a collected field intensity signal through a micropower wireless RF network, and unicasts the collected field intensity signal in an HPLC network;
2) after receiving the collected field intensity signal through the micropower wireless RF network, the first sub-node (STA 1) directly makes a collected field intensity response to the concentrator (CCO) through the micropower wireless RF network;
3) after receiving the collected field intensity signals through the HPLC network, the third sub-node (STA 3) directly makes collected field intensity responses to the concentrator (CCO) through the HPLC network on one hand, and forwards the collected field intensity signals to the fourth sub-node (STA 4) through the micropower wireless RF network through the conversion of a communication protocol on the other hand;
4) after receiving the collected field intensity signal through the micropower wireless RF network, the fourth sub-node (STA 4) makes a collected field intensity response to the third sub-node (STA 3) through the micropower wireless RF network;
after receiving the collected field intensity response of the fourth sub-node (STA 4) through the micropower wireless RF network, the third sub-node (STA 3) forwards the collected field intensity response of the fourth sub-node (STA 4) to the concentrator (CCO) through the HPLC network instead of the conversion of the communication protocol, thereby completing the field intensity collection.
7. The dual-mode networking method based on HPLC and micropower wireless of claim 3, wherein the specific flow of configuring the child nodes is as follows:
1) carrying out a sub-node configuration process, wherein the concentrator (CCO) sends out a sub-node configuration signal through a micro-power wireless RF network, and unicasts the sub-node configuration signal in an HPLC network;
2) after receiving the configuration sub-node signal through the micro-power wireless RF network, the first sub-node (STA 1) directly makes a configuration sub-node response to the concentrator (CCO) through the wireless RF;
3) after receiving the configuration sub-node signal through the HPLC network, the third sub-node (STA 3) makes a configuration sub-node response directly to the concentrator (CCO) through the HPLC network, and forwards the configuration sub-node signal to the fourth sub-node (STA 4) through the micro-power wireless RF network after the communication protocol conversion;
4) after receiving the configuration sub-node signal through the micro-power wireless RF network, the fourth sub-node (STA 4) makes a configuration sub-node response to the third sub-node (STA 3) through the micro-power wireless RF network;
5) after receiving the configuration sub-node response of the fourth sub-node (STA 4) through the micro-power wireless RF network, the third sub-node (STA 3) forwards the configuration sub-node response of the fourth sub-node (STA 4) to the concentrator (CCO) through HPLC network instead through conversion of communication protocol, thereby completing configuration of the sub-node.
8. A dual-mode networking method based on HPLC and micropower wireless according to claim 3, wherein: after the whole network is networked, the concentrator (CCO) groups the second sub-node (STA 2) and the third sub-node (STA 3) into an HPLC network through a standard HPLC protocol, the concentrator (CCO) groups the first sub-node (STA 1) into a micro-power wireless RF network through a micro-power wireless RF protocol, and simultaneously the concentrator (CCO) groups the third sub-node (STA 3) into a micro-power wireless RF network through a micro-power wireless RF protocol, and the third sub-node (STA 3) and the fourth sub-node (STA 4) into a micro-power wireless RF network through a micro-power wireless RF protocol.
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