CN112954702A - Expansion processing method and system for multiple different-frequency wireless networks - Google Patents
Expansion processing method and system for multiple different-frequency wireless networks Download PDFInfo
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Abstract
The application discloses a method and a system for expanding a plurality of different-frequency wireless networks, which comprise the following steps: deploying a first network domain and a second network domain, wherein the first network domain and the second network domain respectively have at least one node; selecting a node from a first network domain; if the network identification identities of the main node and the sub-nodes are consistent, the main node is merged into a second network domain; sending a grid connection requirement to a standby node by a main node, and starting timing a first delay off-grid time by the main node; after the master node is overtime, quitting the network from the first network domain and adding the network into the second network domain; if the master node receives the allowed access information of the second network domain, the master node completes the combination of the second network domain; if the master node does not acquire the allowed access information, the master node stops merging to the second domain; after the standby node receives the grid-connected requirement sent by the main node, the standby node times a second delay combination time and waits for overtime; the standby node detects second domain information after timeout; the standby node detects successful merging to the second domain.
Description
Technical Field
A method and system for processing a wireless network, and more particularly, to a method and system for expanding a plurality of inter-frequency wireless networks.
Background
With the rapid development of networks, physical networks in the past have evolved to wireless networks of today. In the existing transmission architecture of wireless networks, each base station (access point) can form an independent network domain. In the same network domain, users can easily connect with other network devices, such as: the personal computer may be connected to a Network Attached Storage (NAS).
However, the base stations are different from each other in network domain, so that the user cannot communicate with other devices across the network domain. Although the network domain provider can integrate the base stations into the same network domain by setting, the difficulty of setting can be further increased if the base stations belong to different network frequency bands or models. Mesh networks (mesh networks) are recently developed, which can integrate multiple base stations into the same network domain, but the setting of mesh networks requires setting of corresponding rules when the mesh networks are set up. If a new base station is to be added to the existing mesh network, the process of adding equipment is manually performed.
Although the mesh network can solve the problem of multiple base stations, the aforementioned multiple base stations all use the frequency band of the same wireless network. If each base station uses different wireless network frequency bands, the base stations cannot directly communicate with each other, and users cannot switch between different network domains due to the difference of network domain names.
Disclosure of Invention
The technical problem that this application will solve lies in: how to detect, combine and solve conflicts of network domains by networks of various wireless frequency bands.
In order to solve the above problem, the method for processing the extension of a plurality of inter-frequency wireless networks according to the present application includes the following steps: deploying a first network domain and a second network domain, wherein the first network domain and the second network domain are respectively provided with at least one node, the first network domain uses a first wireless network frequency band, and the second network domain uses a second wireless network frequency band; selecting a node from the first network domain, and defining the selected node as a main node, and defining other nodes of the first network domain as standby nodes; detecting a child node of the second domain by the master node; if the network identification identities of the main node and the sub-nodes are consistent and the number of the nodes in the first network domain is less than that of the nodes in the second network domain, the main node is merged into the second network domain; sending a grid connection requirement to the standby node by the main node, and enabling the main node to start timing a first delay off-grid time and wait for the time to be overtime; after the master node is overtime, quitting the network from the first network domain and adding the network into the second network domain; if the master node receives the allowed access information of the second network domain, the master node completes the merging of the second network domain; if the master node does not receive the allowed access information of the second domain, the master node stops merging to the second domain and returns to the first domain; after the standby node receives the grid-connected requirement sent by the main node, the standby node starts to time a second delay merging time and waits for overtime; the standby node detects second domain information carried in the grid-connected requirement after timeout; and if the standby node successfully detects the background reading and completes the merging judgment, the merging to the second network domain is tried.
The present application further provides an expansion processing system for a plurality of inter-frequency wireless networks, including: a first network domain and a second network domain. The first network domain is provided with a main node and at least one standby node, and each node of the first network domain uses a first wireless network frequency range; the second network domain is provided with at least one sub-node, and each node of the second network domain uses a second wireless network frequency band; detecting a child node of the second domain by the master node, if the network identification identities of the master node and the child node are consistent and the number of nodes of the first domain is less than that of the nodes of the second domain, merging the master node into the second domain, sending a grid-connection requirement to the standby node by the master node, and enabling the master node to start timing a first delay off-network time and wait for the time to be overtime; after the master node is overtime, quitting the network from the first network domain and adding the network into the second network domain; if the master node receives the allowed access information of the second network domain, the master node completes the merging of the second network domain; if the master node does not receive the allowed access information of the second domain, the master node stops merging to the second domain and returns to the first domain; after the standby node receives the grid-connected requirement sent by the main node, the standby node starts to time a second delay merging time and waits for overtime; the standby node detects second domain information carried in the grid-connected requirement after timeout; and if the standby node successfully detects the background reading and completes the merging judgment, the merging to the second network domain is tried.
Compared with the prior art, the application can obtain the following technical effects:
1) the method and the system for expanding the multiple pilot frequency wireless networks can effectively detect the pilot frequency network domains and combine the two network domains layer by layer.
2) The expansion processing method and system of the multiple different-frequency wireless networks provide the integration processing of the wireless networks with different frequency bands, so that a single wireless network with different frequency bands is provided for a user.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application.
Fig. 1 is a schematic diagram of a system architecture according to the present application.
Fig. 2 is a schematic diagram of a first network domain and a second network domain of the present application.
FIG. 3 is a schematic diagram of various nodes of the present application.
Fig. 4A is a schematic view of an expansion process of an inter-frequency wireless network according to the present application.
Fig. 4B is a schematic view of a domain stability detection process according to the present application.
Fig. 4C is a schematic diagram of the domain stability detection process of the present application.
Fig. 4D is a schematic diagram of an inter-frequency domain detection procedure according to the present application.
Fig. 5A is a schematic diagram of a master node grid-connected notification to a direct-connected node according to the present application.
Fig. 5B is a schematic diagram of grid-connected notification of a primary node to a secondary node according to the present application.
Fig. 6A is a schematic diagram illustrating an operation flow of a standby node in a multi-network conflict according to the present application.
Fig. 6B is a schematic diagram illustrating operations of the standby node in multi-network collision according to the present application.
Detailed Description
Embodiments of the present application will be described in detail with reference to the drawings and examples, so that how to implement technical means to solve technical problems and achieve technical effects can be fully understood and implemented.
The method for expanding the plurality of different-frequency wireless networks is applied to the existing wireless Ethernet. Referring to fig. 1 for further explanation of the operation architecture of the present application, the expansion processing system of the present application includes a first network domain 110 and a second network domain 120. The first network domain 110 uses a first wireless network frequency band, and the second network domain 120 uses a second wireless network frequency band, wherein the first wireless network frequency band is different from the second wireless network frequency band. For example, the first wireless network frequency band may be 2.4Ghz, and the second wireless network frequency band may be 5 Ghz.
The node apparatuses 200 in the first network domain 110 and the second network domain 120 each have an unequal number of wireless networks, for example: a wireless network base station (access point) or a computer. These wireless network devices are defined herein as nodes. The node apparatus 200 has a processing unit 231, a storage unit 232, a communication unit 233 and a timing unit 234, as shown in fig. 2. The processing unit 231 is electrically connected to the storage unit 232, the communication unit 233 and the timing unit 234. The processing unit 231, in addition to processing related procedures for network packet transmission and deployment, also runs a domain detection procedure 241, an inter-frequency domain detection procedure 242, a domain merging procedure 243 and a collision processing procedure 244. The storage unit 232 records network packets, a domain detection procedure 241, an inter-frequency domain detection procedure 242, a domain merging procedure 243 and a collision handling procedure 244.
The communication unit 233 is used for detecting whether other domains exist in addition to transmitting network packets. In the present application, the communication unit 233 includes at least a first wireless network frequency band and a second wireless network frequency band. The timing unit 234 is used for counting the processing time of the domain detection procedure 241, the inter-frequency domain detection procedure 242, the domain merger procedure 243, and the collision processing procedure 244.
The nodes in the first domain 110 that are to be subjected to network detection and expansion are defined as the master node 211, and the nodes of the first domain 110 other than the master node 211 are collectively referred to as the standby nodes 212. In this application, the master node 211 may also be a standby node 212. This is because different node devices 200 may simultaneously detect other network domains in the first network domain 110 and propose related processing for grid connection. With respect to the first network domain 110, the node of the second network domain 120 directly associated with the master node 211 is defined as a child node 221. The direct association is a node of the second domain 120 that can be directly connected within the detection range of the master node 211. Referring to fig. 3, the right side of fig. 3 is a first domain 110, and the left side is a second domain 120. The master node 211 in the first domain 110 assumes that the scan range is shown as a dashed circle. The node of the second domain 120 covered in the dashed circle is the child node 221. A node directly connected to the master node 211 in the first network domain 110 is defined as a direct-connected node 213, and a node connected to the direct-connected node 213 and not connected to the master node 211 is defined as a secondary-connected node 214.
Please refer to fig. 4A, which is a schematic diagram illustrating an expansion process of the inter-frequency wireless network according to the present application. The method for expanding the pilot frequency wireless network comprises the following steps:
step S410: deploying a first network domain and a second network domain, wherein the first network domain and the second network domain are respectively provided with at least one node, the first network domain uses a first wireless network frequency band, and the second network domain uses a second wireless network frequency band;
step S420: selecting a node from the first network domain, and defining the selected node as a main node, and defining other nodes of the first network domain as standby nodes;
step S430: detecting a child node of the second network domain by the main node;
step S440: if the network identification identities of the main node and the sub-nodes are consistent and the number of the nodes in the first network domain is less than that of the nodes in the second network domain, the main node is merged into the second network domain;
step S450: sending a grid connection requirement to a standby node by a main node, and enabling the main node to start timing first delay off-grid time and overtime waiting time;
step S460: the master node quits from the first network domain and joins the second network domain after overtime, and judges whether to receive an allowed access information;
step S461: if the master node receives the allowed access information of the second network domain, the master node completes the merging of the second network domain;
step S462: if the master node does not receive the allowed access information of the second domain, the master node stops merging to the second domain and returns to the first domain;
step S470: after the standby node receives the grid-connected requirement sent by the main node, the standby node starts to time second delay merging time and waits for overtime;
step S480: the standby node detects second domain information carried in the grid-connected requirement after timeout; and
step S490: and if the standby node successfully detects the background reading and completes the merging judgment, the merging to the second network domain is tried.
First, the first network domain 110 and the second network domain 120 are deployed. The node configurations of the first domain 110 and the second domain 120 are determined according to the domain detection procedure 241. The purpose of the domain detection program 241 is to detect whether the number of nodes of the domain is stable. When the number of nodes in each network domain is kept constant, the network domain is in a stable state, so that the subsequent processing of combining the network domains can be performed. The domain detection procedure 241 may be initiated by any node in the first domain 110, and the initiated node is defined as the domain stability detection node 251. The first domain 110 is taken as an example for explanation, and please refer to fig. 4B and fig. 4C.
Step S411: selecting any node from the first network domain and defining the node as a network domain stability detection node;
step S412: detecting whether the number of the nodes of the first network domain varies in the network domain stability detection time by the network domain stability detection node;
step S413: if the network domain stability detection node does not detect the node quantity variation in the network domain stability detection time, selecting a main node from the first network domain; and
step S414: if the network domain stability detection node detects the node number variation in the network domain stability detection time, the network domain stability detection node counts the network domain stability detection time again and detects the node number.
Any node is selected from the first domain 110 and defined as the domain stability detection node 251. After the domain stability detecting node 251 runs the domain detecting program 241, the domain stability detecting node 251 detects whether the number of nodes of the domain to which the node belongs changes in the domain stability detecting time, as shown in fig. 4C. The domain stability detecting node 251 sends an acknowledgement request to the other standby nodes 212 and confirms whether a response is received during the domain stability detecting time. If the response of the standby node 212 is received during the domain stability detection time, it indicates that the node still exists. Otherwise, the domain stability detecting node 251 will determine that the non-reverted standby node 212 has transaction. If the domain stability detecting node 251 does not detect the node number variation in the domain stability detecting time, the master node 211 is selected from the first domain 110. Otherwise, the domain stability detecting node 251 re-counts the domain stability detecting time and detects the number of nodes.
Then, the master node 211 selects to start the inter-frequency domain detection process 242. In the inter-frequency domain detection process 242, the master node 211 generates a background read cycle according to the number of the standby nodes 212. The purpose of the background read cycle is to detect the search duration of other nodes by the master node 211. As shown in fig. 4D, the inter-frequency domain detection process 242 includes the following steps:
step S431: the main node sets a preset period;
step S432: the main node judges whether the total amount of data transmitted to the standby node exceeds a preset threshold value or not;
step S433: if the total amount of the transmitted data exceeds a preset threshold value, increasing an extended time period for a preset period by the network domain stable detection node for generating a background reading period;
step S434: if the total amount of the transmitted data does not exceed the preset threshold value, the network domain stable detection node reduces the extension time period of the preset period for generating a background reading period;
step S435: if the main node finishes reading network information of the second network domain after the target period, the main node carries out statistics on network identification identity and node number; and
step S436: if the master node does not finish reading the network information of the second network domain after the target period, the master node abandons the combination of the second network.
After determining the master node 211, the master node 211 sets a predetermined period. The duration of the preset period is determined according to the total number of the standby nodes 212. When the total amount of the transmitted data exceeds the preset threshold, the domain stability detection node 251 increases the extended period to the preset period. The aforementioned preset period plus the extended period is the background reading period. Otherwise, if the total amount of the transmitted data does not exceed the preset threshold, the domain stability detection node 251 reduces the extended period of the preset period for generating the background reading period.
The master node 211 may detect the presence or absence of the child node 221 during the background read cycle. If the master node 211 detects that the child node 221 exists, step S440 is executed. If the master node 211 does not detect the presence of the child node 221, the master node 211 re-performs step S435 until the master node 211 detects the presence of the child node 221.
After the detection child node 221 is completed, the master node 211 starts to run a domain merging program 243 for merging the second domain 120 by the master node 211. The master node 211 determines whether network identification identities (SSIDs) of the second domain 120 and the first domain 110 are consistent, and also determines a difference between the number of nodes in the first domain 110 and the second domain 120. When the network identification identities of the master node 211 and the child node 221 are consistent and the number of nodes of the first network domain 110 is less than the number of nodes of the second network domain 120, the first network domain 110 is merged into the second network domain 120. In other cases, the master node 211 may abandon the process of merging the network domains.
When it is confirmed that the merging into the second network domain 120 is started, the master node 211 first sends a grid connection request 511 to the direct connection node 213 and the secondary connection node 214 in the first network domain 110, so as to notify that the direct connection node 213 detects another network domain and will disconnect the connection with the master node 211, and notify that the direct connection node 213 and the secondary connection node 214 will also access the second network domain 120 according to the information of the grid connection request 511 later, please refer to fig. 5A. After disconnecting the direct-connected node 213, the master node 211 starts to count the first delay off-network time and waits for the first delay off-network time to time out.
The master node 211 may resign from the first network domain when the first delay time exceeds. The master node 211 then attempts to merge into the second network domain 120. If the master node 211 receives the allowed access information of the second domain 120, the master node 211 successfully joins the second domain 120. If the master node 211 does not receive the allowed access information of the second domain 120, it is determined that the second domain 120 is not added, and the master node 211 returns to the first domain 110 again. The grid-connection request 511 includes node identification information (UE _ ID), target merging subnet frequency point, network identification identity, and target merging subnet node information.
When direct connected node 213 disconnects master node 211, direct connected node 213 forms a new round of master node 211. Referring to fig. 5A and 5B, fig. 5A shows association and network disconnection between the master node 211 and the direct-connected node 213 in the first round, and fig. 5B shows that the direct-connected node 213 in the next round is replaced by a new master node 211 and an associated direct-connected node 213 (i.e., an original connection node 214). When the standby node 212 receives the grid-connection notification from the master node 211, the standby node 212 additionally sets a second delay combining time. The duration of the second delay merging time is an access duration which can be set corresponding to the merging domain. After the second delay merging time is over, the standby node 212 may start the target merging subnet carried in the detection grid-connected requirement. When the second domain 120 is detected, the identification is completed through background reading, the node numbers of the two domains are compared, and the like, so as to determine whether to merge into the second domain 120.
A conflict condition may occur in the standby node 212 during the second latency merging time, where the standby node 212 acquires the allowed access information 130 from different domains. To highlight the difference between the multiple domains, the first domain 110, the second domain 120, and the third domain 130 are described below. And the master node 211 corresponding to the second network domain 120 is defined as a first master node 611, and the master node 211 corresponding to the third network domain 130 is defined as a second master node 612.
The other child nodes 200 in the first network domain 110 are referred to as node devices 200 for the time being, and are further denoted for directly connected nodes and nodes connected next to each other in the following. The child node 221 of the second domain 120 is defined as a second domain child node 621, and the child node 221 of the third domain 130 is defined as a third domain child node 631. It is further assumed that the number of node devices 200 of the first network domain 110 is smaller than the number of node devices 200 of the second network domain 120 and the third network domain 130. In the present application, a network domain with a large number of nodes may merge a network domain with a small number of nodes, but a network domain with a small number of nodes may not merge a network domain with a large number of nodes.
The standby node 212 in the first domain 110 receives the allowed access information 130 of the first master node 611 and the second master node 612 during the first delay time. The first host node 611 is defined to receive the first grant information 311, and the grant information 130 of the second host node 612 is defined as the second grant information 312. In other words, the first grant access information 311 (with a receiving time of T01) from the second domain 120 and the second grant access information 312 (with a receiving time of T02) from the third domain 130. Referring to fig. 6A and fig. 6B, the standby node 212 performs the following conflict handling steps when receiving the multiple pieces of allowed access information 130:
step S610: when any direct connection node is connected with the grid-connected requirement of the child node of the second network domain, the direct connection node records the current time as a first recording time T1;
step S620: the direct connection node counts the access time T and detects whether the grid connection requirement of other network domains exists or not;
step S630: if the direct connection node is connected with the grid-connected requirement of the child node of the third network domain in the access time, recording the current time as second recording time T2;
step S640: after the access time of the direct connection node, the direct connection node detects whether the direct connection node can be merged into a second network domain;
step S650: if the direct connection node can be merged into the second network domain, the direct connection node is directly merged into the second network domain;
step S660: if the direct connection node cannot be merged into the second network domain, the direct connection node records the current time as the judgment time Tcur;
step S670: the direct connection node judges whether the difference (Tcur-T2) between the judgment time and the second recording time is greater than the access time T;
step S680: if the difference is larger than the access time, the direct connection node detects a third network domain and the subnode to which the direct connection node belongs; and
step S690: and if the difference is smaller than the access time, the direct connection node waits for the access time, the judgment time and the difference duration of the second recording time and then detects a third domain.
As described above, after the first domain 110, the second domain 120, and the third domain 130 are stable, the node apparatuses 200 of each domain start to perform detection and merging of other networks. The first domain 110 is used to detect other domains as an example.
Assume that the first master node 611 has detected a notification from the second domain child node 621 that can be merged into the second domain 120 (i.e., the aforementioned background reading and other steps have been completed). The first master node 611 may start broadcasting to the node devices 200 of the first network domain 110. Wherein, the first master node 611 will leave the first domain 110 and register the information related to the second domain 120 to other node devices 200. Thereafter, the second main node 612 also harvests the second allowed access information 312 from the third domain sub-node 631.
First, the direct connection node 212 records the current time T1 of the first allowed access information 311. The direct-connected node 212 drives the timing unit 234 to start timing for accessing the second network domain 120, and the timing time is defined as an access time T1. The access time T may be a preset duration for the first master node 611 to access the second network domain 120.
If the direct connection node 212 receives the grid connection requirement of the third network domain 130 at the access time T, the direct connection node 212 records a second recording time T2 when the requirement is met. If the direct connection node 212 does not receive the grid connection requirement of other network domains at the access time T, the direct connection node 212 starts to perform the grid connection action. If the direct-connected node 212 cannot be incorporated into the second network domain 120, the direct-connected node 212 records the current time as a determination time Tcur.
Then, the direct connection node 212 determines whether the difference (Tcur-T2) between the determination duration and the second recording time is greater than the access time T. If the difference between the determined duration and the second recording time is greater than the access time, the direct-connected node 212 detects the third domain 130 and the subordinate child node 631. If the difference between the determination time length and the second recording time is less than the access time, the direct connection node 212 waits for the access time, the determination time length and the second recording time difference and then detects the third domain 130. The merging process of the direct connection node 212 for the third domain 130 is the same as the steps S610 to 690. The second network domain 120 in steps S610 to 690 is replaced with the third network domain 130, and the third network domain 130 can be applied to other node devices 200, so that the description is not repeated.
The processing method is based on that after the first master node is merged to the second network domain, the directly connected node may also detect the merging requirement of the second network domain. The direct connection node also concomitantly starts to merge the related handlers of the second network domain. Similarly, the secondary node of the first master node may also face the same situation. The next nodes of each layer are diffused and merged into a new network domain one by one.
The method and the system for expanding the different-frequency wireless networks can combine various non-copper network frequency bands, and nodes of network domains inform related programs of grid connection in the combining process. The master node can therefore seamlessly switch into the new network domain during the merging process.
The device corresponds to the description of the method flow, and the description of the method flow is referred for the deficiency, and is not repeated. The foregoing description shows and describes several preferred embodiments of the present application, but as aforementioned, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.
Claims (9)
1. An expansion processing method for a plurality of different-frequency wireless networks is characterized in that a plurality of wireless networks with different frequency bands and node equipment thereof are combined, and the expansion processing method for the plurality of different-frequency wireless networks comprises the following steps:
deploying a first network domain and a second network domain, wherein the first network domain and the second network domain are respectively provided with at least one node, the first network domain uses a first wireless network frequency band, and the second network domain uses a second wireless network frequency band;
selecting a node from the first network domain, and defining the selected node as a master node, while other nodes of the first network domain are defined as standby nodes;
detecting a child node of the second network domain by the master node;
if the network identification identities of the main node and the child nodes are consistent and the number of the nodes in the first network domain is less than that of the nodes in the second network domain, merging the main node into the second network domain;
sending a parallel network requirement to the standby node by the main node, and enabling the main node to start timing a first delay network leaving time and wait for the first delay network leaving time to be overtime;
after the master node is overtime, quitting the network from the first network domain and adding the network into the second network domain;
if the master node receives the allowed access information of the second network domain, the master node completes the merging of the second network domain;
if the master node does not acquire the allowed access information of the second domain, the master node stops merging to the second domain and returning to the first domain;
after the standby node receives the grid-connected requirement sent by the main node, the standby node starts to time a second delay merging time and waits for overtime;
the standby node detects the second network domain information carried in the grid connection requirement after overtime; and
and if the standby node successfully detects and finishes merging judgment through background reading, trying to merge to a second network domain.
2. The method of claim 1, wherein the deploying the first network domain further comprises:
selecting any one node from the first network domain and defining the node as a network domain stability detection node;
detecting whether the number of the nodes of the first domain varies in a domain stability detection time by the domain stability detection node;
if the network domain stability detection node does not detect the node quantity variation in the network domain stability detection time, selecting the main node from the first network domain; and
if the network domain stability detection node detects the node number variation in the network domain stability detection time, the network domain stability detection node counts the network domain stability detection time again and detects the node number.
3. The method as claimed in claim 1, wherein the step of the master node detecting the child nodes comprises:
the main node sets a preset period;
the main node judges whether the total amount of data sent to the standby node exceeds a preset threshold value or not;
if the total amount of the transmitted data exceeds a preset threshold value, the network domain stable detection node adds an extended period to a preset period for generating a background reading period; and
if the total amount of the transmitted data does not exceed a preset threshold value, the network domain stable detection node reduces the extension time period for a preset period, and is used for generating the background reading period.
4. The method as claimed in claim 3, wherein the background reading period step is followed by the steps of:
if the master node finishes reading network information of the second network domain after the background reading period, the master node carries out statistics on network identification identity and node number; and
and if the master node does not finish reading the network information of the second network domain after the background reading period, the master node abandons the combination of the second network.
5. The method as claimed in claim 1, wherein the admission information further includes node identification information, target merging sub-network frequency points, and target merging sub-network node information.
6. The method according to claim 1, wherein the master node sends the grid-connection request to a direct-connection node, and the direct-connection node is another node to which the master node is directly connected in the first network domain.
7. The method as claimed in claim 6, further comprising the step of, when the master node processes the grid-connection requirement of the child nodes of the second network domain:
when any one direct connection node is connected with the grid-connected requirement of the child node of the second network domain, the direct connection node records the current time as a first recording time;
the direct connection node counts an access time and detects whether the grid connection requirement of other network domains exists or not;
if the direct connection node receives the grid-connected requirement of the child node of a third network domain in the access time, and the current time is recorded as second recording time;
after the access time of the direct connection node, the direct connection node detects whether the direct connection node can be merged into the second network domain;
if the direct connection node can be merged into the second network domain, the direct connection node is directly merged into the second network domain;
if the direct connection node can not be merged into the second network domain, the direct connection node records the current time as a judgment time;
the direct connection node judges whether the difference value between the judgment time and the second recording time is greater than the access time;
if the difference value is larger than the access time, the direct connection node detects the third domain and the subnode; and
and if the difference is smaller than the access time, the direct connection node waits for the difference duration of the access time, the judgment time and the second recording time and then detects the third network domain.
8. An expansion processing system of a plurality of different-frequency wireless networks, which is characterized in that a plurality of wireless networks with different frequency bands and node devices thereof are combined, the expansion processing system of the plurality of different-frequency wireless networks comprises:
a first network domain having a master node and at least one standby node, each node of the first network domain using a first radio network frequency band; and
a second network domain having at least one sub-node, each node of the second network domain using a second wireless network frequency band;
the master node detects a child node of the second network domain, if the network identification identities of the master node and the child node are consistent and the number of nodes of the first network domain is less than that of the nodes of the second network domain, the master node is merged to the second network domain, the master node sends a merging requirement to the standby node, and the master node starts to time a first delay off-network time and waits for the first delay off-network time to be overtime; after the master node is overtime, quitting the network from the first network domain and adding the network into the second network domain; if the master node receives the allowed access information of the second network domain, the master node completes the merging of the second network domain; if the master node does not acquire the allowed access information of the second domain, the master node stops merging to the second domain and returning to the first domain; after the standby node receives the grid-connected requirement sent by the main node, the standby node starts to time a second delay merging time and waits for overtime; the standby node detects the second network domain information carried in the grid connection requirement after overtime; and if the standby node successfully detects and finishes merging judgment through background reading, trying to merge to the second network domain.
9. The system as claimed in claim 8, wherein the master node, the standby node and the child node each have a processing unit, a storage unit, a communication unit and a timing unit, the processing unit is electrically connected to the storage unit, the communication unit and the timing unit, the storage unit records network packets, domain detection procedures, inter-frequency domain detection procedures, domain merging procedures and conflict processing procedures, and the communication unit is configured to transmit network packets and detect other domains.
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