CN110856194A

CN110856194A - Dual-mode fusion networking method and communication method

Info

Publication number: CN110856194A
Application number: CN201911107785.1A
Authority: CN
Inventors: 谢映海; 吴斌; 胡泽鑫
Original assignee: ZHUHAI ZHONGHUI MICROELECTRONICS CO Ltd
Current assignee: ZHUHAI ZHONGHUI MICROELECTRONICS CO Ltd
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-02-28
Anticipated expiration: 2039-11-13
Also published as: CN110856194B

Abstract

A dual-mode fusion networking method and a communication method are disclosed, for a network with a power line carrier communication channel and a micropower wireless communication channel, in the networking communication process, a master node simultaneously executes a networking superframe on the two channels, and the master node and a slave node respectively send signaling information on own signaling time slots, so that the slave nodes on a white list can quickly access the network, and the networking process is completed; in the service communication process, the main node also executes a communication service superframe on two channels simultaneously, the structure of the communication service superframe is different from that of a networking superframe, the nodes in the network downlink minimum communication set are utilized to realize the whole-network broadcast coverage of signaling signals, and the slave nodes send signaling or data on corresponding channels according to the signaling requirements or self requirements. The invention improves the integration degree of two communication means in the networking and communication processes of the network, can better send back the advantages of two different communication means to the physical layer, and provides better communication guarantee capability for the Internet of things.

Description

Dual-mode fusion networking method and communication method

Technical Field

The invention belongs to the technical field of communication, and particularly relates to a dual-mode fusion networking method and a communication method based on power line carrier and micropower wireless communication.

Background

With the rapid development of information processing and communication technologies, the intelligent internet of things is developed vigorously, and can interconnect and intercommunicate terminal equipment and facilities such as sensors and mobile terminals in industrial systems, building control systems, household intelligent facilities and video monitoring systems through wireless and wired communication networks, so that the high-efficiency, energy-saving, safe and environment-friendly management, control and camp integration of the equipment/facilities is realized.

The full-coverage, blind-spot-free, stable and reliable local area network connection is a key technology of the intelligent Internet of things, and subsequent network application development work can be developed on the basis only if stable, reliable and high-speed information transmission links are arranged among the devices. Due to the huge market potential, related research institutions and commercial companies of all countries around the world have developed a great variety of different types of communication technologies, such as ZigBee, Wi-Fi, Bluetooth, Z-wave, NB-IOT, LORA, LPWAN, power line carrier communication, micro-power wireless communication technologies and the like. In china, power line carrier communication and micro-power wireless communication are the two communication technologies which are the best and most widely applied, and occupy the market leading position. Particularly, hundreds of millions of intelligent electric meters in the field of electric power internet of things apply the two technologies to carry out automatic centralized reading and network management, and the automation, informatization and intelligentization levels of the power grid in China are greatly improved.

The power line carrier communication technology and the micro-power wireless communication technology have respective characteristics. The power line carrier communication technology is characterized in that the existing power line is used as an information transmission medium to establish a broadband communication network, the network does not need to be erected again, network deployment can be realized quickly, and the installation cost is low. However, in the communication process, because the electromagnetic environment of the power line communication channel is complex, the quality of the power line carrier communication is affected by factors such as complex power load condition, strong noise interference, time-varying property, large signal attenuation and the like, and thus, the application has certain limitations. The micropower wireless communication technology utilizes a space electromagnetic field to transmit electromagnetic wave signals without considering the line condition, but the micropower wireless communication technology has poor capability of penetrating through barriers and high signal attenuation speed under the channel environment of high buildings or shielding places and the like, and simultaneously has certain defects of communication quality because the micropower wireless communication technology has very limited frequency resources and small signal bandwidth and is easily interfered by other communication sources on a non-special authorized frequency band.

With the rapid development of chip technology, the industry has been provided with the capability of simultaneously installing and operating a power line carrier and a micropower wireless communication chip in a limited space of a device, and thus dual-mode communication has been provided with engineering feasibility. However, the basic principles of the communication protocols of the two communication technologies are greatly different, the two communication technologies run independently from each other, and the fusion degree is low, so that how to fully combine the respective advantages of power line carriers and wireless, two different communication modes can be mutually standby, the defect of a single-mode communication means is overcome, efficient hybrid networking is performed through a dual-mode communication mode, the stability and reliability of network communication are improved, and a research focus is formed for providing a more robust communication guarantee for the internet of things.

Disclosure of Invention

The invention aims to provide a dual-mode fusion networking method based on power line carrier and micropower wireless communication.

The invention also aims to provide a dual-mode converged communication method based on power line carrier and micro-power wireless communication.

In order to achieve the first object, the invention adopts the following technical solutions:

a dual-mode fusion networking method comprises a main node and a slave node attached to the main node, wherein the network is provided with a power line carrier communication channel and a micropower wireless communication channel, and after the network triggers networking requirements, the networking process comprises the following steps:

the method comprises the steps that a main node is triggered and executes a networking superframe in a power line carrier communication channel and a micropower wireless communication channel, wherein the networking superframe sequentially comprises a main node signaling time slot area, a network access slave node signaling time slot area and a non-network access slave node signaling time slot area, the main node signaling time slot area comprises G signaling time slots, the network access slave node signaling time slot area comprises K signaling time slots, the non-network access slave node signaling time slot area comprises L signaling time slots, K is the number of network access nodes when the networking superframe is triggered, and L is the number of non-network access slave nodes when the networking superframe is triggered;

the master node sends a network access invitation signaling to the slave node in the master node signaling time slot of the networking superframe, wherein the information carried in the network access invitation signaling comprises a network name, a network short address of the master node, the number of downlink layers of the master node and the time slot constitution information of the networking superframe;

the slave node receives/sends signaling on its own signaling time slot in the networking superframe: for the slave node which has accessed the network, if receiving the network access invitation signaling sent by the node with the short address smaller than that of the slave node, the slave node relays and sends the network access invitation signaling on the signaling time slot of the slave node belonging to the slave node in the superframe of the network; for the slave nodes which do not access the network, if receiving the network access invitation information sent by the master node or other network access slave nodes, calculating the time position of the signaling time slot area of the slave nodes which do not access the network in the superframe of the network according to the time slot constitution information of the superframe of the network and the network short address of the current signal sending node contained in the network access invitation signaling, randomly selecting one from the time position as the signaling time slot of the slave nodes, and then sending the network access application signaling on the signaling time slot;

if the accessed network slave node receives the access network application signaling sent by other slave nodes and is the upper-level relay node of the signaling, the access network application signaling is sent in a relay way on the signaling time slot belonging to the accessed network slave node;

after receiving a network access application signaling of a certain slave node, the master node sends a network access agreement signaling to the slave node if the equipment ID number of the slave node is in a white list, and sends a network access rejection signaling to the slave node if the equipment ID number of the slave node is not in the white list;

after the network-accessed slave node receives the network-accessed agreement signaling or the network-accessed rejection signaling, checking whether the node equipment ID number in the signaling is stored by the network-accessed slave node, if not, discarding the node equipment ID number, and if so, relaying and sending the signaling on the signaling time slot belonging to the network-accessed slave node;

after the non-network-accessing slave node receives the network-accessing agreement signaling, the non-network-accessing slave node occupies the signaling time slot of the non-network-accessing slave node based on the network short address value allocated by the master node; if the slave node which does not access the network receives the network access rejection signaling, searching for network access invitation signals sent by other subnets;

after the execution of a networking superframe is finished, the master node judges whether all slave nodes on a white list realize networking, if all the slave nodes already access the network, the networking is finished, otherwise, the master node further judges whether the preset initial networking time of the network is exhausted, and if the initial networking time of the network is up, the networking is finished; if the white list has nodes which are not accessed to the network and the initial networking time of the network is not reached, the master node triggers and executes a networking superframe, sends a network access invitation signaling to the slave node on the master node signaling time slot of the new networking superframe, and repeats the steps until the networking is finished.

Further, the information in the network entry invitation signaling sent by the slave node relay includes: the network name of the local subnet, the network short address of the slave node, the downlink layer number of the local subnet and the time slot of the superframe of the local subnet form information.

Further, the information carried by the network access application signaling sent by the slave node which is not networked includes: the network name of the network to which the network is applied, the equipment ID number of the application node and the network short address of the appointed previous hop relay node.

Further, the content of the network access agreement signaling sent by the master node comprises an ID number of the application node device and a network short address distributed to the application node by the master node; the content of the network access rejection signaling sent by the master node comprises the ID of the application node device and the reason for rejecting network access.

Further, the non-network-accessing slave node sends a network-accessing application signal in a contention mode in a signaling time slot belonging to the non-network-accessing slave node.

In order to achieve the second object, the invention adopts the following technical solutions:

the communication method of the network for networking by adopting the dual-mode fusion networking method comprises the following steps:

s1, after the communication service is generated, the main node is triggered and executes a communication service superframe on the power line carrier communication channel and the micro-power wireless communication channel, and for the controllable service, the main node executes the steps S2 to S5 after being triggered; for the uncontrollable service, the main node executes the step S6 after triggering;

s2, the communication service superframe triggered by the main node comprises a signaling time slot area, a CSMA time slot area and a TDMA time slot area in sequence, wherein the signaling time slot area comprises a signaling time slot allocated to the main node and a signaling time slot allocated to a slave node in the network downlink minimum communication set; the main node sends service signaling on the signaling time slot belonging to the main node, and the content of the service signaling comprises: the time slot division signaling and the data reporting indication signaling of the communication service superframe are characterized in that the information of the time slot division signaling of the communication service superframe comprises the number of signaling time slots contained in a signaling time slot area, a network grouping short address of a network downlink minimum communication set, the time length of a CSMA time slot area, the number of time slots contained in a TDMA time slot area, the size of the TDMA time slot and the subsequent idle area time length of the communication service superframe; the information of the data reporting indication signaling comprises: the method comprises the following steps that a data reporting slave node list, the type and the size of data required to be reported are obtained, and nodes in the data reporting slave node list are distributed to a power line carrier channel reporting node set and a micropower wireless channel reporting node set;

s3, after receiving the service signaling, the slave node in the network downlink minimum communication set relays and sends the signaling content on the signaling time slot of the slave node;

s4, after receiving the service signaling, the slave node obtains the initial position and the end position of the CSMA time slot area and the TDMA time slot area of the communication service superframe and the time slot distribution condition of the TDMA time slot area, the data reports the slave node on the slave node list to send corresponding service data on the TDMA time slot area according to the signaling indication, if the slave node generates the sending requirement of the random trigger service, the slave node sends the signal in the CSMA time slot area;

s5, for the slave nodes which communicate through the power line carrier channel or the micro-power wireless channel, after the slave nodes in the corresponding channel reporting node set complete 1-time signal transmission, the master node continuously operates E communication service superframes on the corresponding channels until all the slave nodes in the corresponding channel reporting node set are allocated to 1 TDMA time slot, and E is the maximum value of the uplink transmission hop count of the slave nodes and the master node in the corresponding channel reporting node set; in E communication service superframes which are operated subsequently, a main node sends service signaling on a signaling time slot belonging to the main node, wherein the content of the service signaling is specifically a time slot division signaling and a TDMA time slot allocation signaling of the communication service superframe, and the information of the time slot division signaling of the communication service superframe comprises the number of signaling time slots contained in a signaling time slot area, a network grouping short address of a network downlink minimum communication set, the time length of a CSMA time slot area, the number of time slots contained in the TDMA time slot area, the size of the TDMA time slot and the subsequent idle time length of the superframe; the information for TDMA slot allocation signaling includes: the number of the correspondingly distributed slave nodes, the short addresses of the distributed slave nodes and the number of the correspondingly distributed time slots;

s6, the communication service superframe triggered by the main node comprises a signaling time slot area and a CSMA time slot area in turn, wherein the signaling time slot area comprises a signaling time slot allocated to the main node and a signaling time slot allocated to a slave node in the network downlink minimum communication set; the main node sends service signaling on the signaling time slot belonging to the main node, and the content of the service signaling comprises: the time slot of the communication service superframe divides the signaling, the content of the signaling includes the number of the signaling time slots contained in the signaling time slot area, the network grouping short address of the network downlink minimum communication set, the time length of the CSMA time slot area and the subsequent idle area time length of the communication service superframe;

s7, after receiving the service signaling, the slave node in the network downlink minimum communication set relays and sends the signaling content on the signaling time slot of the slave node;

s8, the slave node receives the service signaling content, and obtains the initial position and the end position of the CSMA time slot area of the communication service superframe and the subsequent idle area time length; if the slave node generates a transmission demand of the random trigger service, performing signal transmission in the CSMA time slot area; all the slave nodes execute a deep sleep mechanism in an idle area, and after the idle area time is over, all the network slave nodes automatically recover the communication function.

Further, in the communication process, the slave node selects a communication channel according to the following method:

if the communication service is sent based on the signaling requirement of the main node, the communication service is sent by adopting a communication channel which is the same as the communication channel used by the main node for sending the signaling; if the communication service is temporarily and randomly triggered by the slave node, checking the link conditions of the slave node and the superior relay node, and judging whether two communication channels exist, if so, waiting for the service transmission windows of the two communication channels, wherein the service transmission window of which communication channel comes first, namely using which communication channel to transmit signals, and stopping the related process of the other communication channel, and if not, waiting for the coming of the service transmission window and transmitting signals by the communication channel of the service transmission window.

Further, the slave nodes with the reported service are divided according to the following conditions:

c is a node in the reporting node set, H1 is the uplink transmission hop count of the node C on the power line carrier channel, H2 is the uplink transmission hop count of the node C on the micropower wireless channel, F1 is the reporting node set of the power line carrier channel, F2 is the reporting node set of the micropower wireless channel, and the reporting node set comprises all slave nodes with reporting services.

Further, in step S5, the allocation method of the TDMA time slots by the master node in the communication service superframe is as follows:

in the 1 st superframe of E communication service superframes, the main node is a first uplink relay slave node set phi₁M1 nodes in turn allocate M_1,1,m_1,2,...,m_1,M1One TDMA time slot, the first uplink relay slave node set phi₁The uplink relay slave node m comprises an uplink relay slave node m corresponding to the node in the power line carrier channel reporting node set F1_1,1,m_1,2,...,m_1,M1Sequentially a first uplink relay slave node set phi₁The nodes in the node set report the number of the nodes corresponding to each node in the node set F1 on a power line carrier channel;

in the 2 nd superframe of E communication service superframes, the master node is a second uplink relay slave node set phi₂M2 nodes in turn allocate M_2,1,m_2,2,...,m_2,M2One TDMA time slot, the second uplink relay slave node set phi₂In the system, a first uplink relay slave node set phi is included₁Uplink relay slave node, m, corresponding to the node in (1)_2,1,m_2,2,...,m_2,M2Sequentially a second uplink relay slave node set phi₂The node in (1) relays a slave node set phi in the first uplink₁The number of nodes corresponding to each of them;

and by analogy, in the E-th superframe of the E communication service superframes, the master node is the E-th uplink relay slave node set phi_eMe nodes in the sequence allocate m_e,1,m_e,2,...,m_e,MeOne TDMA time slot, the second uplink relay slave node set phi_eThe e-1 th uplink relay slave node set phi is included in_e-1Uplink relay slave node, m, corresponding to the node in (1)_e,1,m_e,2,...,m_e,MeSequentially set phi of e-th uplink relay slave nodes_eThe node in the system relays the slave node set phi on the e-1 th uplink_e-1The number of nodes, E, is 3, … …, E.

Further, in step S2, the number of time slots included in the TDMA time slot area is equal to the number of slave nodes in the data reporting slave node list, the time slots in the TDMA time slot area are averagely allocated to the slave nodes in the reporting slave node list in sequence, and the TDMA time slot size is the communication rate of the reported data size divided by the carrier sensing physical layer data waveform.

Further, in step S4 and step S8, the slave node transmits a signal in the CSMA slot area by using the CSMA-type channel contention access method.

Further, the network downlink minimum connection set is determined according to the following method:

node set omega with master node slave downlink layer number p_pSelecting partial nodes to realize coverage of nodes with the downlink layer number of P +1, wherein P is 1,2, … … and P-1; p is the maximum downlink layer number of the network;

the selection steps of the nodes are as follows: for the node set omega with the downlink layer number p_pAnd a node set omega with the downlink layer number p +1_p+1From Ω_pOne signal selected from the group can cover omega_p+1Node J1 with the largest number of nodes, and then node J1 is updated from Ω_pAnd the node covered by the node J1 is deleted from omega_p+1And (4) deleting until the step is omega_p+1And the number of the middle nodes is 0, and the selected nodes are added into the network downlink minimum communication set.

According to the technical scheme, for the network with two different communication means on the physical layer, the networking method and the communication method which can integrate two communication technologies of power line carrier and micropower wireless are designed, so that the two communication means are integrated in network networking and communication application, and the nodes can select a communication channel with better effect as required in the networking or communication process, so that the independent operation of a single-mode communication network can be met, the mixed operation of a dual-mode communication network can also be met, the advantages of two different communication means on the physical layer can be better played, and better network communication guarantee capability is provided for the Internet of things. The networking method and the communication method have strong adaptability and strong robustness, can flexibly meet the communication requirements of different deployment scenes and service models of the Internet of things, and support the application of the intelligent Internet of things in different fields.

Drawings

In order to illustrate the embodiments of the present invention more clearly, the drawings that are needed 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 only some embodiments of the present invention, and that other drawings can be obtained by those skilled in the art without inventive effort.

FIG. 1 is a schematic diagram of a dual-mode convergence protocol stack based on power line carrier and micropower wireless dual-mode communication according to the present invention;

FIG. 2 is a diagram illustrating the structure of two superframes in a dual-mode network according to the present invention;

fig. 3 is a schematic diagram of a superframe time slot structure of the networking of the present invention;

FIG. 4 is a diagram of a communication service superframe time slot structure according to the present invention;

fig. 5 is a diagram illustrating a structure of a superframe time slot of a first communication service after controllable service generation according to the present invention;

FIG. 6 is a network topology diagram according to an embodiment of the present invention;

fig. 7 is a diagram of a slot structure and slot allocation for a communication service superframe according to an embodiment of the present invention;

fig. 8 is a schematic diagram of a communication service superframe time slot structure triggered by a master node according to an embodiment of the present invention.

Detailed Description

In order to make the aforementioned and other objects, features and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

The method is a dual-mode fusion networking and communication method based on a power line carrier communication technology and a micropower wireless communication technology, so that the used communication protocol has the following characteristics:

uniformity of protocol architecture: by adopting the protocol stacks with the same architecture, the difference of the communication capacities of the physical layers of the two communication technologies is overcome, and the research and development of different protocol stacks for the two communication means are avoided;

independence of single mode operation: when a communication protocol supports a certain mode communication mode to have a fault, the other mode communication mode can be independently operated to ensure the normal operation of the network;

high adaptivity: the service model of the internet of things and the network form are complex, and the communication protocol can flexibly meet the communication requirements of different deployment scenes and service models;

master-slave mode of network operation: the network master node is the only rule maker and manager of the whole network operation, informs the network slave node of the relevant network operation parameters in a signaling notification mode, and the slave node executes corresponding actions completely based on the signaling content of the master node. The master-slave network operation mode concentrates the network protocol complexity to the master node, and numerous slave nodes can operate simpler protocols, so that complex calculation is avoided, the protocol complexity of numerous slave nodes is simplified, a foundation is laid for reducing the cost of the slave nodes, and the requirement on hardware equipment of the slave nodes is reduced.

Fig. 1 is a schematic diagram of a dual-mode convergence protocol stack based on dual-mode communication of power line carrier and micro-power wireless, in view of the consistency of the protocols of the power line carrier and the micro-power wireless, the principle and content of the link layer protocols of the two communication modes should be basically consistent. However, at present, the bandwidth of a power line carrier channel is large, the communication rate of a physical layer reaches the Mbps level, the bandwidth of a micropower wireless channel is narrow, the communication rate of the physical layer is generally in the hundred kbps level, and in order to adapt to the difference of the two communication means in the communication capacity of the physical layer, the two communication means are allowed to have certain difference in some protocol implementation details.

As shown in fig. 2, the network superframes in both network modes do not adopt a fixed structure, and therefore, the network master node adaptively makes a decision according to the current situation of the network and informs the nodes in the whole network through signaling, and the network master node has a completely autonomous decision right for the superframe structure, which includes:

the relevance of a power line carrier and a micropower wireless superframe structure on a time axis is not compulsorily specified, and a main node can autonomously determine the starting position and the ending position of two superframes, and does not necessarily require that the two superframes are aligned or not aligned on the time axis;

the time lengths of different superframes of the power line carrier and the micropower wireless are not necessarily required to be the same, that is, the time lengths of different superframes in the same communication mode are allowed to be different or can be the same;

the time continuity between adjacent superframes in the same communication mode is not mandatory, that is, after one superframe is allowed to end, the master node does not need to initiate the next superframe immediately, and can decide to deeply hibernate for a period of time and then initiate the next superframe as required.

The superframe structure can avoid binding design of a power line carrier and a micropower wireless superframe structure, can better adapt to the difference of two different communication means on the communication capacity of a physical layer, and can provide better support for single-mode independent operation. Meanwhile, the network node can execute a deep sleep mechanism in an idle area, provide protocol support for low power consumption design of equipment and reduction of communication conflicts among different subnets, and expand the application range.

The network short address of the main node in the network is defaulted to 0, and in the network access process, the main node can allocate a unique short address in the network to each slave node, and the value range is [1, G ]]And G is the number of network access slave nodes in the network. Using T bits to represent the address of a node in the network, i.e. the network short address, requires 2 to ensure sufficient address space^T-1>G + 1. In the operation process of the network, in order to improve the signaling efficiency, the main node allocates a network packet short address to a certain part of nodes in the network according to the network routing condition or the service communication condition, and the value range is [ G +1,2 ]^T-1]And the network short address is used for indicating all nodes in the packet and broadcasting related information to the whole network in a signaling mode, namely the network short address of the node contained in the network packet short address. Default packet short address containing full network slave node is 2^T-1, a node can be attributed to a plurality of different network packet short addresses. Each slave node obtains a unique equipment ID number when leaving the factory so as to mark the identity information of the node. When the master node is networking, a white list policy is executed, the white list comprises the equipment ID numbers of all the slave nodes belonging to the sub-network, and the master node only allows the slave nodes on the list to join the network.

Fig. 3 is a schematic diagram of a superframe structure in a networking stage. The networking superframe structure of the power line carrier communication mode and the micropower wireless communication mode is the same. As shown in fig. 3, the network superframe of the networking stage includes 2N +8 signaling time slots, where N is the number of slave nodes on the white list of the master node, and the length of the idle area between adjacent network superframes is 0. The structure and time slot division of the network superframe in the networking stage are specifically as follows. The superframe of the networking stage comprises 3 signaling time slots with different purposes, which are sequentially as follows: the system comprises a main node signaling time slot area, a network access slave node signaling time slot area and a non-network access slave node signaling time slot area, wherein the first G (G is 8) signaling time slots in each superframe are the main node signaling time slot area and are fixedly allocated to a main node for use; the 9 th to K +8 th signaling time slots are network access slave node signaling time slot regions and are allocated to K slave nodes which have accessed the network for use, and K is the number of the nodes which have accessed the network (K is a dynamic value and will change along with the change of the number of the nodes which have accessed the network in different superframes); and the last L signaling time slots are non-network-accessed slave node signaling time slot regions and are allocated to non-network-accessed slave nodes for use, L is the number of the non-network-accessed slave nodes and is also a dynamic value, L is 2N-K, and the non-network-accessed slave node signaling time slots are used for sending network access application signals to the non-network-accessed slave nodes in a competition mode.

In order to ensure the correct transmission of signaling content, physical layer waveforms with low rate, high robustness and reliability and communication distance larger than data transmission waveforms are used on a signaling time slot, the lengths of the signaling time slots of a superframe at a power line carrier side and a superframe at a micro-power wireless side are fixed, the specific value is jointly determined by the lowest rate waveform of a self physical layer and the maximum signaling bit length carried by one signaling time slot, the length of the signaling time slot is not too long in consideration of signaling overhead and signaling communication reliability, and the specific value is decided according to the actual application scene of a network. The maximum signaling bit length carried by 1 signaling time slot in the superframe of the power line carrier side and the superframe of the micro-power wireless side is the same, but the lengths of the signaling time slots are different (influenced by different physical layer communication capacities).

After the network main node works, the network main node firstly enters an initial networking stage, the purpose of the stage is that the main node quickly guides all slave nodes which belong to the sub-network and are in the network signal coverage range to realize network access, the method of the invention fuses the power line carrier communication technology and the micropower wireless communication technology, therefore, when the main node conducts the networking, the networking process is simultaneously started on the power line carrier channel and the micropower wireless channel, the slave nodes also simultaneously start the network access process on the power line carrier channel and the micropower wireless channel, the networking processes on the two communication channels are mutually independent, and the networking method of the invention comprises the following steps:

after the network triggers the networking requirement, the main node is triggered and starts to execute a networking superframe, the main node respectively sends a network access invitation signaling to the slave node in the main node signaling time slot of the networking superframe of the power line carrier and the main node signaling time slot of the micropower wireless networking superframe, and the information carried in the network access invitation signaling comprises the network name of the sub-network, the network short address of the main node, the number of self downlink layers (default to 0) and the time slot constitution information (the numerical values of N and K) of the networking superframe;

the slave node receives/sends signaling on the signaling time slot belonging to the slave node in the networking superframe of the corresponding channel; for a slave node which has accessed the network, if the slave node receives a network access invitation signaling sent by a node (including a master node or a slave node) with a network short address smaller than that of the slave node in a certain networking superframe, the network access invitation signaling (k is the network short address of the slave node which has accessed the network) is sent in a relay way on a signaling time slot (the k +8 signaling time slot) of the slave node belonging to the self networking superframe of the networking superframe, so that the multi-hop diffusion of the information is realized; the information in the network access invitation signaling sent by the node relay comprises the following information: the network name of the local subnet, the network short address (k) of the slave node, the self downlink layer number and the time slot of the local networking superframe form information; the calculation mechanism of the self downlink layer number is as follows: in a neighbor node set of a slave node, which can correctly receive a signaling signal sent by the slave node, if the minimum value of the downlink layer number is n, the downlink layer number of the slave node is n + 1;

for the slave nodes which do not access the network, if the slave nodes receive the network access invitation information sent by the master node or other network access slave nodes in a certain network superframe and realize the time synchronization of the network superframe, the time positions of L signaling time slots of the network superframe are calculated according to the time slot constitution information of the network superframe and the network short address of the current signal sending node, then one of the signaling time slots is randomly selected as the signaling time slot of the slave nodes, and a network access application signaling is sent on the signaling time slot, wherein the information carried by the network access application signaling comprises: the network name of the network access application, the equipment ID number of the application node and the network short address of the appointed previous hop relay node (both the main node and the slave node can be used); optionally, in consideration of the time delay required by the related multi-hop transmission and the loss of the signaling signal transmission, after the non-network-accessing node sends the network-accessing application signaling for 1 time, if no response (network-accessing agreement signaling or network-accessing rejection signaling) is received within a predetermined period (for example, within 10 seconds), the previous-hop relay node is replaced, and the network-accessing application signaling is sent again until the response is received or the number of times of sending the network-accessing application signaling reaches the upper limit; further, if the slave node can receive signals of different subnets, a new network access application is initiated to another subnet after the network access application of one subnet fails;

if the accessed network slave node receives the accessed network application signaling sent by other slave nodes (the slave node can be an initiating node of the accessed network application signaling or a relay node) and is a last hop relay node of the signaling, the accessed network application signaling is relayed and sent on the pre-allocated signaling time slot of the slave node (the short address of the accessed network slave node is x, and the pre-allocated signaling time slot is the x +8 time slot of the superframe); similarly, the network-accessed slave node also designates a node to serve as a previous-hop relay node and updates and replaces the network short address of the relay node in the network-accessing application signaling; optionally, the selection mechanism of the previous-hop relay node is: the node can receive the signaling signal sent by the node, the downlink layer number is minimum, and the received signal quality is best; after the signaling relay is sent, the accessed network slave node stores the equipment ID number of the application node applying the signaling in the memory of the accessed network slave node;

after receiving a network access application signaling of a slave node, if the equipment ID number of the slave node is in a white list, the master node sends a network access agreement signaling to the slave node, wherein the signaling content comprises the equipment ID number of the application node and a network short address distributed to the application node by the master node; the main node selects the smallest one from the unallocated short address set [1, N ]; if the device ID number of the slave node is not in the white list, sending a network access rejection signaling to the slave node, wherein the signaling content comprises the device ID of the application node and the reason for rejecting network access, and is used for indicating the slave node to search other networks again; optionally, when the signaling is lost due to unreliable channels, the master node may continue to receive the network access application signal of a certain slave node applying for network access for multiple times after sending a network access approval or network access rejection signaling to the node, and may set that the master node responds to the same node for at most 1 time of network access application signal in a predetermined period (e.g., every 5 seconds), and if the slave node agrees to network access, the network short address allocated to the master node in the network access approval signaling subsequently sent by the master node is the same as that sent by the master node for the 1 st time, thereby avoiding a scenario in which one node is allocated with two different network short addresses;

after the network-accessing slave node receives the network-accessing agreement signaling or the network-accessing rejection signaling, checking whether the ID number of the node equipment in the signaling is stored in the memory of the slave node, if not, discarding the ID number, and if so, indicating that the slave node is a relay sending node of the network-accessing application signaling of the slave node, so that the slave node relays and sends the signaling on the pre-allocated signaling time slot of the slave node; optionally, since a node may receive a network access agreement signaling or a network access rejection signaling with the same content from different nodes, in order to avoid network networking efficiency reduction caused by repeated transmission of the same content, a slave node does not repeat the relay transmission of the network access agreement signaling and the network access rejection signaling with the same content within a predetermined period (e.g., within 5 seconds);

if the slave node which does not access the network receives the network access agreement signaling, the slave node means that the network access is successful, and the slave node occupies the pre-allocated signaling time slot based on the network short address value allocated by the master node; if the non-network-accessing slave node receives the network-accessing rejection signaling, starting to search for network-accessing invitation signals sent by other subnets;

after the execution of a networking superframe is finished, the master node judges whether all nodes on a white list realize networking, if all slave nodes already access the network, networking is finished, otherwise, the master node further judges whether the preset initial networking time (for example, 10 minutes) of the network is exhausted, and if the initial networking time of the network is up, networking is finished; if the white list has nodes which are not accessed to the network and the initial networking time of the network is not reached, the main node continues to trigger and execute a new networking superframe, sends a network access invitation signaling to the slave node on the main node signaling time slot of the new networking superframe, and repeats the steps until the networking is finished.

The network enters a service communication stage in a networking completion mode, only service communication requirements exist between a master node and slave nodes in the Internet of things, and no service communication requirements exist between the slave nodes. And otherwise, the service with the slave node as the source node and the service with the master node as the destination node are defined as an uplink service, and the corresponding routes are also a downlink route and an uplink route respectively. There are two types of traffic in the network: the method comprises the following steps that controllable services initiated by a master node and random trigger services initiated by slave nodes are provided, wherein the controllable services refer to certain communication requirements of a network triggered by the master node as required, a typical scene is that part of slave nodes or all slave nodes in the network are required to report data of a certain specified type and size in a signaling mode, and the communication requirements of the services are known and controllable by the master node; the random triggering service refers to that a certain slave node suddenly generates a requirement for sending data to a master node in the network operation process, and the communication requirement of the service is generated by random triggering and cannot be sensed and controlled by the master node. Based on the service communication model, the network adopts a multi-level tree topology, namely a master node is taken as a center, and part of slave nodes in the network are taken as relay nodes to form a multi-hop network in which the master node is connected with all the slave nodes.

The superframe structure of the service communication stage of the invention is different from the superframe structure of the networking stage, but the superframe structure of the communication service of the power line carrier communication mode and the micropower wireless communication mode is the same. As shown in fig. 4, the superframe of the traffic communication phase includes slots of type 3, which are in turn: signaling slot zone, CSMA slot zone, TDMA slot zone. The signaling time slot area is used for sending signaling content, the signaling time slot area comprises X signaling time slots with the same length, the signaling time slots in the communication service superframe are the same as the signaling time slots in the networking superframe, and the value of X is determined by the main node according to the current network information. The CSMA time slot area does not carry out time slot division and is used for sending signaling content and service data in a competitive access mode, the time length of the CSMA time slot area is a dynamic value and is determined by the main node according to the current network information and state. The TDMA time slot area contains Y time slots with the same length, and is used for sending signaling content or service data in a contention-free access mode, wherein the value of the time slot number Y and the time length of the data time slot in each communication service superframe are dynamic values, and are determined by the main node according to the current network service transmission requirement. Optionally, to increase protocol flexibility, the length of the CSMA slot region and the TDMA slot region is allowed to be 0 in one traffic superframe.

In the service communication stage, the invention adopts a mixed channel access scheme to better guarantee the transmission requirements of the controllable service and the random trigger service in the network. If the network generates controllable service in the operation process, namely the master node requires part or all slave nodes in the network to report data of a certain specified type and size to the master node, the master node takes the TDMA time slot area as the main part and the CSMA time slot area as the auxiliary part when deciding the superframe time slot structure; and if there is no controllable traffic, the CSMA slot area is primary and the TDMA slot area is 0.

When there is a controllable service, that is, the master node requires some or all slave nodes in the network to report data of a certain specified type and size through signaling. Recording the reporting node set as F, further dividing the nodes in the reporting node set F into a power line carrier channel reporting node set F1 and a micropower wireless channel reporting node set F2, wherein the node division in the reporting node set F is according to the following steps:

c is a node in the report node set, H1 is the uplink transmission hop count of the node C on the power line carrier channel, and H2 is the uplink transmission hop count of the node C on the micropower wireless channel. The data collection mechanism of the controllable service by the power line carrier channel and the micro-power wireless channel is the same, and the communication process of the controllable service is described below by taking the power line carrier channel as an example.

After the controllable service is generated, the master node triggers a first communication service superframe, as shown in fig. 5, where the first communication service superframe includes a signaling timeslot area, a CSMA timeslot area, and a TDMA timeslot area, where the number X of signaling timeslots in the signaling timeslot area is W +8, the first 8 timeslots are allocated to the master node, the last W timeslots are sequentially and equally allocated to slave nodes in the network downlink minimum communication set R, and W is the number of slave nodes in the network downlink minimum communication set R; the network downlink minimum communication set R comprises part of slave nodes of the network, a master node allocates a network grouping short address to the network grouping short address and performs whole-network broadcasting, and the master node can realize the whole-network broadcasting coverage of the signaling signals by sequentially carrying out relay transmission on the signaling signals of the master node according to the node sequence by using the nodes in the network downlink minimum communication set R in a communication service superframe time;

the main node sends service signaling on the signaling time slot of the communication service superframe, and the content of the service signaling comprises: the method comprises the steps that a time slot division signaling and a data reporting indication signaling of a superframe are carried out, wherein the information of the time slot division signaling of the superframe comprises an X value, a network grouping short address of a network downlink minimum communication set R, a CSMA time slot area time length, a Y value, a TDMA time slot size and a subsequent idle area time length of the superframe (when a controllable service transmission requirement exists in a network, the idle area length is 0); the information of the data reporting indication signaling comprises: reporting the slave node list, the type and the size of the data required to be reported by the data; optionally, because the length of the signaling content carried by 1 signaling timeslot is limited, if the number of nodes in the node set F1 reported by the power line carrier channel is large, the slave node list in F1 is allowed to be sent in batches in different superframes; optionally, to improve transmission reliability, the transmission contents of the master node in 8 signaling time slots may be the same; further, if the signaling contains a data reporting indication signaling, the Y value is equal to the number of nodes in the slave node list of the data reporting, Y TDMA time slots are evenly distributed to Y reporting slave nodes in sequence, and the size of the TDMA time slot is determined according to the communication rate of the data waveform of the carrier sensing physical layer divided by the size of the reported data;

after receiving the back service signaling signal from the slave node in the network downlink minimum communication set R, the slave node in the network downlink minimum communication set R performs relay transmission of signaling content on its allocated signaling time slot, so that the whole network broadcast of the signaling content is realized by using X ═ W +8 signaling time slots in the superframe;

after receiving the service signaling, the slave node obtains the starting position and the ending position of the CSMA time slot area and the TDMA time slot area of the communication service superframe and the time slot allocation condition of the TDMA time slot area; if the network slave node generates the transmission requirement of the random trigger service, the CSMA type channel competition access mode is used for signal transmission in the CSMA time slot area; the reporting slave nodes on the data reporting slave node list send corresponding service data to the uplink relay nodes of the reporting slave nodes in the TDMA time slot area according to the signaling indication and the routing table information sent to the reporting slave nodes by the master node on the time slots allocated by the reporting slave nodes; the CSMA type channel competition access mechanism is mature prior art, so that a related algorithm is not formulated in detail here and can be formulated by each equipment manufacturer independently;

after the slave nodes in the power line carrier channel reporting node set F1 all complete 1-time signal transmission, the master node continues to operate the E communication service superframes until all the slave nodes in the power line carrier channel reporting node set F1 are allocated 1 TDMA time slot, that is, all the slave nodes in the power line carrier channel reporting node set F1 complete 1-time service data transmission to their own uplink relay nodes. E is the maximum value of uplink transmission hop counts of the slave nodes and the master node in the power line carrier channel reporting node set F1; the time slot division of E communication service superframes executed by the main node subsequently is the same as the time slot division of the 1 st communication service superframe, in the E communication service superframes, the main node sends a service signaling on a signaling time slot belonging to the main node, the content of the service signaling specifically comprises the time slot division signaling and a TDMA time slot allocation signaling of the superframe, wherein the information of the time slot division signaling of the superframe comprises an X value, a network grouping short address of a network downlink minimum communication set R, the time length of a CSMA time slot area (the numerical value is consistent with the numerical value of the 1 st superframe), a Y value, the granularity of the TDMA time slot and the subsequent idle time length of the superframe; the information for TDMA slot allocation signaling includes: the number Q of the corresponding slave nodes, the short addresses of the 1 st to Q th slave nodes and the number of the corresponding allocated time slots are correspondingly allocated, if the short addresses are the packet short addresses, the slave nodes in the packet are all allocated with the corresponding number of time slots, and the sum of the time slot data allocated by the slave nodes is equal to Y.

Further, the allocation method of the master node to the TDMA time slots in the E communication service superframes is as follows:

in the 1 st superframe of the E superframes, the main node is a first uplink relay slave node set phi₁M1 nodes in turn allocate M_1,1,m_1,2,...,m_1,M1One TDMA time slot, the first uplink relay slave node set phi₁The uplink relay slave node m comprises an uplink relay slave node m corresponding to the node in the power line carrier channel reporting node set F1_1,1,m_1,2,...,m_1,M1Sequentially a first uplink relay slave node set phi₁The nodes in the node set report the number of the nodes corresponding to each node in the node set F1 on a power line carrier channel;

in the 2 nd superframe of the E superframes, the master node is a second uplink relay slave node set phi₂M2 nodes in turn allocate M_2,1,m_2,2,...,m_2,M2One TDMA time slot, the second uplink relay slave node set phi₂In the system, a first uplink relay slave node set phi is included₁Uplink relay slave node, m, corresponding to the node in (1)_2,1,m_2,2,...,m_2,M2Sequentially a second uplink relay slave node set phi₂The node in (1) relays a slave node set phi in the first uplink₁The number of nodes corresponding to each of them;

and in the same way, TDMA time slots are distributed to the remaining superframes in the E superframes based on the same method, so that in the continuous uplink transmission process of the service data, the master node arranges the TDMA time slots matched with the service number of the uplink relay slave nodes of the service data according to the network routing table information until the number of the nodes of the uplink relay slave node set is 0, and the data are transmitted to the master node hop by hop in a collision-free mode. Because the routing table information of the slave node is issued by the master node, if the relevant information issuing process is not lost, the routing information of the master node and the slave node is kept consistent.

In the following, a TDMA timeslot allocation process is described with a specific example, as shown in fig. 6, node 0 in the network is a master node, and node 1, node 3, node 5, and node 7 together form a network downlink minimum connectivity set R1; the node 2, the node 3, the node 4, the node 7, the node 8, the node 9 and the node 10 belong to a power line carrier channel reporting node set F1. The master node will use 3 communication service superframes to complete the data collection of 7 nodes in the power line carrier channel reporting node set F1, and the time slot structure and the time slot allocation situation of each communication service superframe are shown in fig. 7.

The master node allocates 1 TDMA time slot to each of 7 nodes in F1 in the 1 st superframe for data service transmission;

the master node is the first uplink relay slave node set phi in the 2 nd superframe₁The 4 nodes (

nodes

1, 3, 5 and 7) are respectively allocated with 1,2 and 1 TDMA for data service relay transmission;

the master node is the second uplink relay slave node set phi in the 3 rd superframe₂The 2 nodes (nodes 1 and 3) are allocated 2 and 1 TDMAs for data traffic relay transmission, respectively.

Because transmission errors may occur in the multi-hop transmission process of the signaling signals and the service signals, after the operation of the E +1 superframe structures is completed, the data of some nodes in the power line carrier channel reporting node set F1 cannot be successfully sent to the master node, optionally, after the operation of the E +1 superframe structures is completed, the master node may request the nodes which have not successfully reported data to report data again, and allocate corresponding timeslot resources according to the same principle. If the nodes still have unsuccessful data reporting after the main node requests for many times, another communication means is replaced to carry out the relevant data collection process on the nodes. If both communication means fail, the node may become a communication isolated point or has been disconnected, and reports the relevant information to the application layer for processing.

The controllable service communication process on the micro-power wireless channel side is the same as the controllable service communication process on the power line carrier channel side, and reference may be made to the above description.

When there is no controllable service, the communication service superframe triggered by the master node is as shown in fig. 8, where the communication service superframe includes a signaling timeslot region and a CSMA timeslot region, where the number X of signaling timeslots in the signaling timeslot region is W +8, the first 8 timeslots are allocated to the master node, the last W timeslots are sequentially and equally allocated to slave nodes in the network minimum communication set R, and W is the number of slave nodes in the network downlink minimum communication set R;

the main node sends service signaling on the signaling time slot of the communication service superframe, and the content of the service signaling comprises: the method comprises the steps that (1) a time slot division signaling of a superframe is obtained, wherein the information of the time slot division signaling of the superframe comprises an X value, a network grouping short address of a network downlink minimum communication set R, the time length of a CSMA time slot area (different application environments can be configured with different values, the typical value is 5 seconds), a Y value (0 at the moment), the size of a TDMA time slot (0 at the moment), and the subsequent time length of an idle area of the superframe (the specific value is flexibly determined by a main node according to the type of the Internet of things and application requirements);

after receiving the signaling content, the slave node obtains the initial position and the end position of the CSMA time slot area of the communication service superframe and the subsequent idle area time length; if the network slave node generates the transmission requirement of the random trigger service, the CSMA type channel competition access mode is used for signal transmission in the CSMA time slot area; and all network slave nodes execute a deep sleep mechanism in the idle area, and after the idle area time is over, all network slave nodes automatically recover the communication function.

In the service communication process, the slave node selects a communication channel according to the following method:

if the service is sent based on the signaling requirement of the main node, the service is sent by adopting the same channel as the main node for sending the signaling; if the service is triggered temporarily and randomly by the slave node, the link conditions of the slave node and the superior relay node are checked, whether a dual-mode link exists is judged, if yes, a dual-mode sending window is waited, which mode window comes first is to be used for sending a signal, and the related process of the other mode is stopped, and if no dual-mode link exists, the coming of the sending window is waited, and the signal is sent in the mode of the sending window.

The method is based on the service communication requirement of the Internet of things, the network only supports the service communication requirement between the master node and the slave node, and the slave node does not have the service communication requirement, so that only the uplink and downlink transmission routes between the master node and the slave node need to be maintained on a routing layer. The uplink routes are all point-to-point transmission routes of a single slave node to the master node, and the downlink routes comprise point-to-multipoint transmission routes between the master node and a plurality of slave nodes (including downlink full-network broadcasting) besides the point-to-point transmission routes between the master node and the single slave node.

The invention uses a master-slave type routing protocol architecture with a central decision, and a master node is a decision maker of all communication routes of the whole network. In the service communication stage, the main node dynamically sends neighbor node information reporting signaling to the network-accessing slave nodes according to the communication effect of the network, and requires the nodes to report own neighbor node information. A decision mechanism of a reporting period: the initial value of the reporting period of each slave node is 30 seconds, the maximum value is 180 seconds, and the minimum value is 10 seconds, wherein after a master node sends a service data or neighbor node information reporting signaling for a certain node, if the service data or neighbor node information reporting signaling is successfully received, the reporting period of all relay slave nodes in an uplink route of the node is increased by 10 seconds (not more than the maximum value); and if the uplink route cannot be received, the reporting period of all the relay nodes in the uplink route of the node is reduced by half (not exceeding the minimum value).

Each signaling signal and data signal carries the network short address of the sending node, so that the network node can analyze the address of the sending node after correctly receiving one signal, evaluate the signal receiving quality and form own neighbor node information. The master node forms perception of the topology information of the whole network by dynamically collecting the neighbor node information of the network-accessing slave nodes, and calculates 2 uplink relay nodes (1 master 1 spare) and 2 downlink relay nodes (1 master 1 spare) corresponding to each network-accessing slave node and a network downlink minimum communication set.

The uplink relay node of the invention is determined according to the following method: the number of uplink layers of the master node is 0, the number of uplink layers of the slave node which can correctly receive the signal by the master node is 1, the number of uplink layers of the slave node which can correctly receive the signal by the slave node with the number of uplink layers of 1 is 2, and the like. For a slave node a, the master node selects 2 nodes from a node set in which the slave node a is listed as a neighbor node to serve as uplink relay nodes (1 is primary 1 standby), and the priority of the selection conditions is as follows in sequence: the number of uplink layers is the smallest, and the reception quality of the signal transmitted from the node a is the best.

The downlink relay node of the invention is determined according to the following method: the number of downlink layers of the master node is 0, the number of downlink layers of the slave node which can correctly receive the signal sent by the master node is 1, if one slave node cannot receive the master node signal but can receive the signal sent by the node with the number of downlink layers of 1, the number of downlink layers is 2, and the like. For a slave node B, the master node selects 2 nodes from the node set taking the slave node B as neighbor nodes to serve as downlink relay nodes (1 is primary 1 standby), and the priority of the selection condition is as follows: the number of downlink layers is 1 level more than that of the node B, and the receiving quality of signals sent by the node B is the best.

The network downlink minimum communication set R is determined according to the following method: the master node firstly selects part of nodes from a node set Down _ H1 with 1 downlink layer number to realize signal coverage with 2 downlink layer numbers, and the selection steps are as follows: setting node sets with the downlink layers of 1 and 2 as omega 1 and omega 2 respectively, firstly selecting a node J1 from omega 1, wherein the node is the node with the maximum number of signals in omega 1 capable of covering omega 2, then deleting J1 from omega 1, and deleting the node covered by J1 from omega 2; then, continuing the correlation selection algorithm until the number of the nodes in the omega 2 set is 0, and in the process, the nodes selected from the set Down _ H1 can realize the signal coverage of the nodes with the downlink layer number of 2; based on the same principle, the main node picks out the related nodes layer by layer downwards to finally obtain a complete network downlink minimum communication set.

The main node uses the route notification signaling to notify the route information on the signaling time slot, and the information of the route notification signaling comprises: the signaling contains the node number V1, the network short address of the node 1, the network short addresses of 2 uplink relay nodes of the node 1, the short addresses of 2 downlink relay nodes of the node 1, … …, the network short address of the node V1-1, the network short addresses of 2 uplink relay nodes of the node V1-1, and the short addresses of 2 downlink relay nodes of the node V1.

The master node uses the signaling of network minimum connection set notification to perform the current network minimum connection set notification on the signaling time slot, and the information includes: the minimum number of nodes communicating with the aggregate signaling V2, the network grouping short addresses of the nodes of the aggregate, and the network short addresses of the nodes 1 to V2.

When the slave node sends signals on the TDMA time slot, the uplink/downlink relay node necessarily uses the main relay node; when the slave node sends a signal on the CSMA time slot, the use of the main relay node is considered preferentially, and then the standby relay node is considered when the receiving confirmation of the opposite side cannot be received.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dual-mode converged networking method, wherein a network comprises a master node and slave nodes attached to the master node, is characterized in that: the network is provided with a power line carrier communication channel and a micropower wireless communication channel, and after the network triggers a networking requirement, the networking process comprises the following steps:

2. The dual-mode converged networking method of claim 1, wherein: the information in the network access invitation signaling sent by the node relay comprises the following information: the network name of the local subnet, the network short address of the slave node, the downlink layer number of the local subnet and the time slot of the superframe of the local subnet form information.

3. The dual-mode converged networking method of claim 1, wherein: the information carried by the network access application signaling sent by the slave node which is not accessed to the network comprises: the network name of the network to which the network is applied, the equipment ID number of the application node and the network short address of the appointed previous hop relay node.

4. The dual-mode converged networking method of claim 1, wherein: the content of the network access agreement signaling sent by the main node comprises an ID number of the application node equipment and a network short address distributed to the application node by the main node; the content of the network access rejection signaling sent by the master node comprises the ID of the application node device and the reason for rejecting network access.

5. The dual-mode converged networking method of claim 1, wherein: the non-network-accessing slave node transmits a network-accessing application signal in a contention mode at a signaling time slot belonging to the non-network-accessing slave node.

6. The communication method of the network for networking by adopting the dual-mode fusion networking method of any one of claims 1 to 5, characterized in that: the method comprises the following steps:

7. The communication method of claim 6, wherein: in the communication process, the slave node selects a communication channel according to the following method:

8. The communication method according to claim 6 or 7, characterized by: the slave nodes with the reported service are divided according to the following conditions:

c is a node in the reporting node set, H1 is the uplink transmission hop count of the node C on the power line carrier channel, H2 is the uplink transmission hop count of the node C on the micropower wireless channel, F1 is the reporting node set of the power line carrier channel, F2 is the reporting node set of the micropower wireless channel, reporting is carried outThe node set comprises all slave nodes with reported services.

9. The communication method of claim 6, wherein: in step S5, the allocation method of the TDMA slots by the master node in the communication service superframe is as follows:

10. The communication method of claim 6, wherein: in step S2, the number of time slots included in the TDMA time slot area is equal to the number of slave nodes in the data reporting slave node list, the time slots in the TDMA time slot area are averagely allocated to the slave nodes in the reporting slave node list in sequence, and the TDMA time slot size is the communication rate of the reported data size divided by the carrier sensing physical layer data waveform.

11. The communication method of claim 6, wherein: in steps S4 and S8, the slave node transmits a signal in the CSMA slot area by using the CSMA-type channel contention access method.

12. The communication method of claim 6, wherein: the network downlink minimum communication set is determined according to the following method: