CN116782255A

CN116782255A - Same-frequency subnet fusion method and device, communication node and storage medium

Info

Publication number: CN116782255A
Application number: CN202210234313.8A
Authority: CN
Inventors: 虞莺莺
Original assignee: Chenxin Technology Co ltd
Current assignee: Chenxin Technology Co ltd
Priority date: 2022-03-10
Filing date: 2022-03-10
Publication date: 2023-09-19

Abstract

The invention discloses a method, a device, a communication node and a storage medium for fusing same-frequency subnetworks, wherein the method comprises the following steps: when the original master control node is detected to be off-line, changing the node into a new master control node; determining information to be updated and activation time, wherein the information to be updated comprises at least one of a new frequency point and a new physical cell identifier; generating system information according to the information to be updated and the activation time in combination with the node information of the first communication node, and broadcasting the system information to a second communication node in the subnet; and after the activation time is reached, updating the frequency point and/or the physical cell identifier of the node according to the information to be updated so as to carry out subnet fusion on the updated subnet. The method solves the problem that the sub-network splitting caused by the off-network of the original master control node cannot be fused, the first communication node is changed into a new master control node after the off-network of the original master control node, and the first system information is broadcast, so that the second communication node and the first communication node can be updated after the activation time is reached, and the sub-network fusion is completed.

Description

Same-frequency subnet fusion method and device, communication node and storage medium

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and apparatus for fusing a same frequency subnet, a communication node, and a storage medium.

Background

In a mobile ad hoc network, the system adopts a self-synchronization scheme, and each node transmits a synchronization signal. After the node is started, firstly, the synchronization and timing information are acquired through the flow of searching and reading system information, and after random access is carried out, the synchronization of the whole network is completed. The first node of the network is called the master node, and the other nodes are called non-master nodes. There is one and only one master node, and the master node and the non-master node can be converted. After the network deployment of the master control node is successful, the frequency point and the physical cell identifier (Physical Cell Identifier, PCI) of the sub-network are determined. A subnet is identified with a frequency point and PCI.

After networking, due to the influence of comprehensive factors such as random movement of the user terminal, on-off of the node at any time, change of wireless channel transmission power, mutual interference among wireless channels and the like, the network topology structure formed among the mobile terminals through the wireless channels may change at any time, and the changing mode and speed are unpredictable, so that sub-network splitting may be caused. When a subnet splits, since both subnets are co-frequency and co-PCI, conventional neighbor subnet measurements cannot be used to detect another co-frequency and co-PCI subnet. In addition, since the timing deviation of the two split subnets gradually increases with time, the probability of successfully reading the system message of the adjacent subnets is low. Moreover, the two split sub-networks have the same-frequency interference and can influence the data receiving and transmitting. Therefore, how to merge multiple sub-networks with the same frequency and the same PCI as soon as possible is important.

Disclosure of Invention

The invention provides a method, a device, a communication node and a storage medium for fusing same-frequency subnets, which are used for solving the problem that the same-frequency subnets cannot be fused after the subnets are split.

According to an aspect of the present invention, there is provided a common-frequency subnet fusion method applied to a first communication node, the method comprising:

when the original master control node is detected to be off-line, changing the node into a new master control node;

determining information to be updated and activation time, wherein the information to be updated comprises at least one of a new frequency point and a new physical cell identifier;

generating first system information according to the information to be updated and the activation time, and broadcasting the first system information to second communication nodes in the subnet so that each second communication node updates according to the first system information;

and after the activation time is reached, updating the frequency point and/or the physical cell identifier of the node according to the information to be updated so as to carry out subnet fusion on the updated subnet.

According to an aspect of the present invention, there is provided a common-frequency subnet fusion method applied to a second communication node, the method comprising:

receiving second system information, wherein the second system information is determined according to the first system information;

Determining information to be updated and activation time according to the second system information, wherein the information to be updated comprises at least one of a new frequency point and a new physical cell identifier;

According to another aspect of the present invention, there is provided an on-channel subnet fusion device, comprising:

the detection module is used for changing the node into a new main control node after detecting that the original main control node is off-line;

the first determining module is used for determining information to be updated and activation time, wherein the information to be updated comprises at least one of a new frequency point and a new physical cell identifier;

the first broadcasting module is used for generating first system information according to the information to be updated and the activation time and broadcasting the first system information to second communication nodes in the subnet so that each second communication node updates according to the first system information;

and the first updating module is used for updating the frequency point and/or the physical cell identifier of the node according to the information to be updated after the activation time is reached, so that the updated subnet is subjected to subnet fusion.

the receiving module is used for receiving second system information, and the second system information is determined according to the first system information;

the second determining module is used for determining information to be updated and activation time according to the second system information, wherein the information to be updated comprises at least one of a new frequency point and a new physical cell identifier;

and the second updating module is used for updating the frequency point and/or the physical cell identifier of the node according to the information to be updated after the activation time is reached, so that the updated subnet is subjected to subnet fusion.

According to another aspect of the present invention there is provided a communications node comprising:

at least one processor; and

a memory communicatively coupled to the at least one processor; wherein,,

the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the co-frequency subnet fusion method according to any of the embodiments of the invention.

According to another aspect of the present invention, there is provided a computer readable storage medium storing computer instructions for causing a processor to implement the same-frequency subnet fusion method according to any of the embodiments of the present invention when executed.

According to the technical scheme, after the original master control node is detected to be off-line, the node is changed into a new master control node; determining information to be updated and activation time, wherein the information to be updated comprises at least one of a new frequency point and a new physical cell identifier; generating system information according to the information to be updated and the activation time in combination with the node information of the first communication node, and broadcasting the system information to all second communication nodes of the subnet; and after the activation time is reached, updating the frequency point and/or the physical cell identifier of the node according to the information to be updated so as to carry out subnet fusion on the updated subnet. The method solves the problem that the sub-network splitting caused by the original master control node after the disconnection is not integrated, the first communication node changes into a new master control node after detecting the disconnection of the original master control node, and the second communication nodes in the sub-network are broadcasted by generating system information comprising information to be updated and activation time, so that each second communication node and the second communication node can update frequency points and/or physical cell identifiers according to the information to be updated after the activation time is reached, the updated sub-network is different from at least one of the sub-network frequency points or physical cell identifiers before the disconnection, the existence of the other sub-network can be identified through a measurement and detection mode, the sub-network integration is completed, the same-frequency interference is eliminated, and the influence of data receiving and transmitting are reduced.

It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a flowchart of a method for fusing same-frequency subnets according to a first embodiment of the present invention;

FIG. 2 is a schematic diagram of a sub-network splitting process according to a first embodiment of the present invention;

fig. 3 is a flowchart of a method for fusing same-frequency subnets according to a second embodiment of the present invention;

fig. 4 is a diagram of an implementation example of co-frequency subnet fusion of a new master node according to the second embodiment of the invention;

fig. 5 is a flowchart of a method for fusing same-frequency subnets according to a third embodiment of the present invention;

Fig. 6 is a diagram of an implementation example of co-frequency subnet fusion of a second communication node according to the third embodiment of the invention;

fig. 7 is a schematic structural diagram of a common-frequency subnet fusion device according to the fourth embodiment of the invention;

fig. 8 is a schematic structural diagram of a common-frequency subnet fusion device according to a fifth embodiment of the invention;

fig. 9 is a schematic structural diagram of a communication node implementing the co-frequency subnet fusion method according to the embodiment of the invention.

Detailed Description

In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Example 1

Fig. 1 is a flowchart of a method for co-frequency subnet fusion according to a first embodiment of the present application, where the method may be performed by a co-frequency subnet fusion device, and the co-frequency subnet fusion device may be implemented in hardware and/or software, and the co-frequency subnet fusion device may be configured in a communication node. Fig. 2 is a schematic diagram illustrating splitting of a sub-network according to an embodiment of the present application, after an original master node 21 is disconnected, a first communication node changes a node into a new master node 22, and an atomic network and the split new sub-network each include non-master nodes 23, where frequency points and physical cell identifiers of the non-master nodes are the same. The non-master control node 23 in the new subnet is the second communication node according to the present application.

As shown in fig. 1, the method includes:

s101, changing the node into a new master control node after detecting that the original master control node is off-line.

The same-frequency subnet fusion method provided by the embodiment of the application is executed by the first communication node, wherein the first communication node is one communication node in the subnets split in the atomic network, and any one of the split subnets can be selected in principle, for example, a master control node in the atomic network is successfully networked first, and the communication node which is successfully networked first after the master control node in the atomic network is successfully networked is selected as the first communication node.

In this embodiment, the original master node may be understood as a master node of the atomic network before the atomic network is not split; the node refers to a first communication node, and a new master control node can be specifically understood as a master control node of the split sub-network.

Specifically, the networking sequence of all the communication nodes in the atomic network is correspondingly determined after the communication nodes are successfully networked, and one of the communication nodes can be selected as the first communication node according to the networking sequence or the first communication node can be selected according to other rules. When the sub-network is split, the original master control node cannot be detected normally, and each communication node in the split sub-network can determine whether to serve as a new master control node or not, and the communication node serving as the new master control node is the first communication node. The condition that the original master control node and part of communication nodes cannot be normally connected comprises that the original master control node is off-line or the original master control node is off-line. When the first communication node detects that the original master control node is off-line, the node is determined to be used as a new master control node in the split sub-network, and the node is changed from the common communication node to the new master control node.

S102, determining information to be updated and activation time, wherein the information to be updated comprises at least one of a new frequency point and a new physical cell identifier.

In this embodiment, the information to be updated may be specifically understood as information used for data update of each communication node in the subnet, where the updated information may avoid co-channel interference. The information to be updated comprises a new frequency point and/or a new physical cell identifier, wherein the new frequency point is different from the frequency point of the sub-network before splitting, and the new physical cell identifier is different from the physical cell identifier of the sub-network before splitting.

Specifically, the frequency point and the physical cell identifier of each communication node in the subnet are known, information different from the frequency point or different from the physical cell identifier, or different from the frequency point and the physical cell identifier is selected as information to be updated, and a time point is selected as activation time, so that data updating can be completed for any communication node in the subnet, and therefore, the activation time can be determined according to the communication node in the subnet.

S103, generating first system information according to the information to be updated and the activation time, and broadcasting the first system information to second communication nodes in the subnet so that each second communication node can be updated according to the first system information.

In this embodiment, the first system information may be specifically understood as information for broadcasting generated by the first communication node, where the first system information includes at least information to be updated and activation time. The second communication node may be understood as a communication node in the subnetwork other than the master node. The same communication node can be used as both the first communication node and the second communication node, and in general, the same communication node can only be used as the first communication node or the second communication node in one subnet, and no handover is performed.

Specifically, after the information to be updated and the activation time are determined, the first system information in a fixed format can be generated according to the information type of the corresponding sequence, for example, the 1 st-3 rd byte of the system information is the activation time, the 4 th-5 th byte is a new frequency point in the information to be updated, the 5 th-6 th byte is a new physical cell identifier in the information to be updated, if the information to be updated has no new frequency point, the 4 th-5 th byte is empty, and correspondingly, no new physical cell identifier exists, and the 5 th-6 th byte is empty; bytes 7-9 are node identification … of the node information. The system information formed in the above manner may omit the information type and include only the corresponding data, e.g., the first system information stores 0012 in bytes 5-6, i.e., the new physical cell identifier is 0012. The information types and the corresponding data can also be stored in the first system information at the same time, and the information of each type in the first system information at this time can be stored out of order. After the first system information is formed, the first system information is broadcast to all second communication nodes in the subnet which can reach the node by one hop. Each second communication node can update according to the first system information, and broadcast the information to be updated and the activation time in the first system information to other communication nodes which can reach the first communication node in one hop, so that information diffusion is completed, and any communication node in the subnet can receive the information to be updated and the activation time.

And S104, after the activation time is reached, updating the frequency point and/or the physical cell identifier of the node according to the information to be updated so as to carry out subnet fusion on the updated subnet.

The node judges the current time and updates the current time after the current time reaches the activation time. When the information to be updated comprises a new frequency point, updating the frequency point of the node according to the new frequency point; when the information to be updated comprises a new physical cell identifier, updating the physical cell identifier of the node according to the new physical cell identifier; when the information to be updated comprises the new frequency point and the new physical cell identifier, the frequency point of the node is updated according to the new frequency point, and the physical cell identifier of the node is updated according to the new physical cell identifier. The updated frequency point and/or physical cell identification of the sub-network is different from that of the atomic network, namely the existence of the other party can be identified in a measurement and detection mode, the sub-network fusion is completed, the same-frequency interference is eliminated, and the influence of data receiving and transmitting is reduced.

The embodiment of the invention provides a same-frequency subnet fusion method, which changes a node into a new main control node after detecting that an original main control node is off-line; determining information to be updated and activation time, wherein the information to be updated comprises at least one of a new frequency point and a new physical cell identifier; generating system information according to the information to be updated and the activation time in combination with the node information of the first communication node, and broadcasting the system information to all second communication nodes of the subnet; and after the activation time is reached, updating the frequency point and/or the physical cell identifier of the node according to the information to be updated so as to carry out subnet fusion on the updated subnet. The method solves the problem that the sub-network splitting caused by the original master control node after the disconnection is not integrated, the first communication node changes into a new master control node after detecting the disconnection of the original master control node, and the second communication nodes in the sub-network are broadcasted to each other by generating system information comprising information to be updated and activation time, so that each second communication node and each other node can update frequency points and/or physical cell identifiers according to the information to be updated after the activation time is reached, the updated sub-network is different from at least one of the sub-network frequency points or physical cell identifiers before the disconnection, the existence of the other party can be identified through a measurement and detection mode, the sub-network integration is completed, the same-frequency interference is eliminated, and the influence of data receiving and transmitting are reduced.

Example two

Fig. 3 is a flowchart of a same-frequency subnet fusion method according to a second embodiment of the present invention, where the method optimizes the method according to the second embodiment, and before detecting that an original master node is off-line, the method further includes detecting whether the original master node is off-line; optimizing the information to be updated and the activation time to be determined as follows: inquiring a predetermined frequency point data table, and screening out new frequency points and/or new physical cell identifiers from the frequency point data table as information to be updated; determining the maximum hop count according to the current network topology of the home subnet; determining activation time according to the maximum hop count; updating and optimizing the frequency point and/or the physical cell identifier of the node according to the information to be updated as follows: and updating the frequency point of the node to the new frequency point and/or updating the physical cell identifier to the new physical cell identifier. As shown in fig. 3, the method includes:

s301, detecting the hop count of the node and the original master node.

In the subnet, the communication among different nodes is completed in a mode of outwards broadcasting information by the nodes, each node broadcasts data to the nodes directly connected with the node, and after the node receives the data broadcast by the previous node, the node continues to outwards broadcast and sends the data broadcast to other nodes, so that the communication among the nodes is realized. Two nodes directly transmit data and can reach the data through x hops, wherein x is the hop count between the two nodes. The number of hops to the network node maintained by each node is calculated as follows: if it is a one-hop neighbor node of the own node, the hop count=1; if the node is not a one-hop neighbor node, the hop count to the node is equal to the minimum value of the hop counts of all the one-hop neighbor nodes to the node, and 1 is added. For example, when node 1 needs to send information a to node 2, the way the information propagates is: node 1 to node 3, node 3 to node 4, node 4 to node 2, and the number of hops between node 1 and node 2 is 3 hops. Each node can determine the number of hops between the node and other respective nodes by broadcasting between the nodes.

And S302, when the hop count meets a preset condition, determining that the original master control node is off-line.

In this embodiment, the preset condition may be specifically understood as a preset determination condition, which is used to determine whether the hop count meets the requirement. For example, the preset condition may be that the maximum number of hops from the node to any node in the subnet is greater. When the hop count meets the preset condition, the node cannot reach the original master control node, and the original master control node is disconnected. When the original master control node is normally powered off and off, the node can receive the system information sent by the original master control node, the system information carries special indication that the node is about to be off the network, and after other nodes of the network receive the system information, the node can be judged to be actively off the network according to the special indication parameters carried by the system information.

And S303, changing the node into a new master control node after detecting that the original master control node is off-line.

When the information to be updated and the activation time are determined, the information to be updated and the activation time can be determined at the same time or sequentially without strict execution sequence. In this embodiment, the steps of determining the information to be updated and the activation time are executed in parallel, and S304 and S305 to S306 in fig. 3 are juxtaposed.

S304, inquiring a predetermined frequency point data table, and screening out new frequency points and/or new physical cell identifiers from the frequency point data table as information to be updated.

In this embodiment, the frequency point data table may be specifically understood as a data table storing frequency points and physical cell identifiers. The frequency point and the physical cell identifier can be stored in the frequency point data table as a group of data, or the frequency point and the physical cell identifier can be stored respectively, and the cycle can be performed in a mode of determining one frequency point or one physical cell identifier each time, so that each group of frequency point and physical cell identifier can be determined. The frequency point and the physical cell identifier can uniquely determine one subnet, and when the subnets are fused, the frequency points or the physical cell identifiers of different subnets are required to be different. And after the sub-network splitting occurs, carrying out sub-network fusion by detecting a new sub-network. Therefore, in order to ensure that the new subnet is detected and fused, a frequency point data table is generated in advance, and the new subnet can be detected according to the frequency point and the physical cell identifier in the frequency point data table, so that the quick fusion is realized.

Specifically, a frequency point data table is generated in advance, frequency points and physical cell identifications are stored in the frequency point data table, the frequency points and the physical cell identifications of the node are frequency points and physical cell identifications of the sub-network before splitting, new frequency points and/or new physical cell identifications are screened out from the frequency point data table, the new frequency points are different from the frequency points of the sub-network before splitting, and the new physical cell identifications are different from the physical cell identifications before splitting. If other subnets exist besides subnets before and after splitting, the new frequency point and the new physical cell identification are different from those of any subnets. To increase the screening speed, the frequency points or physical cell identifiers in the frequency point data table may be marked after they are used. For example, the frequency point and the physical cell identifier are a set of data, after the set of frequency point and the physical cell identifier are selected as a new frequency point and a new physical cell identifier (or as a frequency point and a physical cell identifier of a certain subnet), the set of frequency point and the physical cell identifier are marked, which are already used for uniquely identifying the subnet m, when the subnet m is fused with other subnets or performs other operations, the frequency point and the physical cell identifier of the subnet m are not used continuously, and the marking is cancelled. The frequency points and the physical cell identifications which are marked can be skipped directly when the frequency point data table is queried next time.

It can be known that, because the frequency point and the physical cell identifier can be changed only when the subnet fusion is performed in the application, even if the frequency point and the physical cell identifier are stored in the frequency point data table in a mode of adopting the frequency point and the physical cell identifier as a group of data, if only one of the frequency point and the physical cell identifier needs to be changed, the other one can be set as null or other special characters. For example, if a set of frequency points in the frequency point data table is xxxx and the physical cell identifier is 0, it may be determined that the new frequency point is xxxx and there is no new physical cell identifier (i.e., the physical cell identifier does not need to be updated).

The method for determining the new frequency point and the new physical cell identifier in the embodiment of the application can also adopt a random generation method, so long as the method is different from the frequency point or the physical cell identifier of each existing subnet. Although the method can realize the integration of the subnets, the workload of detecting the new subnets can be increased, and the detection speed can be reduced.

S305, determining the maximum hop count according to the current network topology of the subnet.

In this embodiment, the current network topology may be specifically understood as a network topology structure at the current time in the present subnet. And determining the connection relation among all communication nodes in the subnet to obtain the current network topology. And obtaining the maximum hop count based on the current network topology, namely obtaining the hop count among all communication nodes in the subnet, and comparing the hop count to obtain the maximum hop count.

S306, determining the activation time according to the maximum hop count.

Specifically, the data propagation manner in the subnet is broadcasted from one communication node to the next communication node, and the broadcasting is sequentially performed, so that each communication node can acquire data or information from the previous communication node. The data broadcast from one communication node to the next takes a hop and takes t1 to complete, so that the time of data propagation is related to the size of the hop count when the data broadcast is performed in the subnetwork. The activation time may be determined according to the maximum number of hops by: activation time = maximum hop count time per hop + t0, where the time per hop may be determined according to the hop count propagation speed, so as to ensure that each communication node other than the master node may receive the first system information, the time per hop may be greater than or equal to the hop count propagation speed, and the corresponding t0 may be 0 or greater than zero. And calculating the activation time according to the maximum hop count, so that all non-master control nodes can be ensured to receive the first system information sent by the new master control node.

S307, generating first system information according to the information to be updated and the activation time and broadcasting the first system information to the second communication nodes in the subnet so that each second communication node updates according to the first system information.

As an optional embodiment of the present embodiment, the optional embodiment further optimizes node information including the first system information and further including the first communication node, the node information of the first communication node including at least one of: the identification of the node, the off-network indication information, the identification of the new main control node, the frequency point of the subnet, the physical cell identification of the subnet and the hop count from the node to any node.

In this embodiment, the node information may be information such as a node identifier of the first communication node, a node identifier of the new master node, and the like. When the first system information is generated according to the information to be updated and the activation time, the first system information may also be generated in combination with the node information of the first communication node, that is, the first system information may include the node information of the first communication node. The off-network indication information may be specifically understood as indicating whether the node is normally powered off and off, and the communication node may broadcast, through the system information, to other communication nodes whether the node is to be powered off and off.

Specifically, when the first system information further includes node information of the first communication node, the node information of the first communication node is determined before the first system information is generated, the type of the information in the node information may be preset, and corresponding information is obtained according to each information type to form the node information. The first system information in a fixed format may also be generated in accordance with the information type of the corresponding order.

And S308, after the activation time is reached, updating the frequency point of the node to a new frequency point and/or updating the physical cell identifier to a new physical cell identifier so as to facilitate the updated subnet to carry out subnet fusion.

Specifically, the first communication node monitors time, and when the time reaches the activation time, updates the frequency point of the node to a new frequency point, or updates the physical cell identifier to a new physical cell identifier, or updates the frequency point of the node to a new frequency point, and simultaneously updates the physical cell identifier to a new physical cell identifier. And finishing subnet change, wherein the frequency point or physical cell identifier of the subnet after the change is different from the frequency point or physical cell identifier of the subnet before splitting. The split two subnets can identify the existence of the other party in a measurement and detection mode, and then the subnet fusion can be carried out in a different frequency subnet fusion mode.

It may be known that, after the frequency point and/or the physical cell identifier of the subnet are changed, the first communication node may still broadcast the first system information to perform information interaction and transfer with other communication nodes, but since the frequency point and/or the physical cell identifier are not required to be changed at this time, the new frequency point, the new physical cell identifier, and the activation time in the first system information may be set to 0 or null, so as to indicate that no new frequency point, no new physical cell identifier, and no activation time are present at this time, and no frequency point and/or physical cell identifier need to be changed.

Fig. 4 is a diagram illustrating an implementation example of co-frequency subnet fusion of a new master node according to an embodiment of the present invention.

S401, the first communication node is used as a non-master control node to successfully access the network.

And S402, the first communication node judges that the original master node is off-line (namely, the original master node is not reachable and is not actively off-line), and actively upgrades the node into a new master node.

S403, the new master control node generates a new frequency point and/or a physical cell identifier PCI, and calculates the activation time of the new frequency point and/or the new PCI.

S404, broadcasting the new frequency point and/or PCI and the activation time through the first system information.

S405, when the activation time is reached, a new frequency point and/or PCI is enabled (i.e., the frequency point of the present node is updated to a new frequency point and/or the PCI of the present node is updated to a new PCI).

S406, starting subnet detection to identify a new subnet.

S407, measuring detects other subnets.

S408, trying an inter-frequency subnet fusion strategy to merge the subnets.

The embodiment of the invention provides a same-frequency subnet fusion method, which solves the problem that subnet splitting caused by the off-network of an original master node cannot be fused, a first communication node changes the node into a new master node after detecting the off-network of the original master node, a new frequency point and/or a new physical cell identifier are determined by inquiring a frequency point data table, and activation time is determined by the maximum hop count of the current network topology, so that all second communication nodes can receive information to be updated and the activation time. The first system information is broadcast to all the second communication nodes in the own subnet, so that each second communication node and the own node can update the frequency point and/or the physical cell identifier according to the information to be updated after the activation time is reached, the updated own subnet is different from at least one of the subnet frequency point or the physical cell identifier before splitting, the existence of the other party can be identified through a measurement and detection mode, the subnet fusion is completed, the same-frequency interference is eliminated, and the influence of data receiving and transmitting is reduced.

Example III

Fig. 5 is a flowchart of a method for co-frequency subnet fusion according to a third embodiment of the present invention, where the method may be performed by a co-frequency subnet fusion device, and the co-frequency subnet fusion device may be implemented in hardware and/or software, and the co-frequency subnet fusion device may be configured in a communication node. As shown in fig. 5, the method includes:

s501, receiving second system information, wherein the second system information is determined according to the first system information.

In this embodiment, the second system information may be specifically understood as information indicating that the second communication node in the subnet performs the frequency point and/or physical cell identifier change.

Specifically, the second system information received by the second communication node may be sent by another second communication node directly connected to the second system information, or may be directly sent by the first communication node (new master node). When the received second system information is directly sent by the first communication node, the second system information at the moment is the first system information; when the received second system information is sent by other second communication nodes in the sub-network, the second system information at the moment is determined according to the first system information, namely, the new main control node broadcasts the first system information, the other second communication nodes in the sub-network receive the first system information, then the first system information is analyzed, data required for changing the frequency point and/or the physical cell identifier are determined, and the system information of the node is formed and broadcast outwards until the second communication node is broadcast.

It can be known that only the second communication node directly connected to the new master node (the hop count is equal to 1) can receive the first system information broadcast by the new master node (the first system information at this time can be directly used as the second system information), and the second system information received by the other second communication nodes is broadcast by the other second communication nodes, and is related to the first system information, that is, the second system information is determined according to the first system information, whether the second system information is sent by the new master node or the second system information sent by the other second communication nodes.

S502, determining information to be updated and activation time according to second system information, wherein the information to be updated comprises at least one of a new frequency point and a new physical cell identifier.

Specifically, the second system information is analyzed, and the information to be updated and the activation time are determined. The second system information can store the information to be updated and the activation time according to the agreed format, and the information to be updated and the activation time can be obtained only by analyzing the data of the fixed field according to the agreed format at the moment; and the second system information can be completely analyzed to determine the information to be updated and the activation time.

And S503, after the activation time is reached, updating the frequency point and/or the physical cell identifier of the node according to the information to be updated so as to perform subnet fusion on the updated subnet.

And the second communication node monitors the time, and updates the node after the time reaches the activation time. When the information to be updated comprises a new frequency point, updating the frequency point of the node according to the new frequency point; when the information to be updated comprises a new physical cell identifier, updating the physical cell identifier of the node according to the new physical cell identifier; when the information to be updated comprises the new frequency point and the new physical cell identifier, the frequency point of the node is updated according to the new frequency point, and the physical cell identifier of the node is updated according to the new physical cell identifier. The updated frequency point and/or physical cell identification of the sub-network is different from that of the atomic network, namely the existence of the other party can be identified in a measurement and detection mode, the sub-network fusion is completed, the same-frequency interference is eliminated, and the influence of data receiving and transmitting is reduced.

The embodiment of the invention provides a same-frequency sub-network fusion method, which solves the problem that sub-network splitting caused by an original master node after off-network cannot be fused, a second communication node receives second system information, the second system information is determined according to first system information, information to be updated and activation time are determined by analyzing the second system information, the information to be updated comprises at least one of a new frequency point and a new physical cell identifier, the second communication node can update the frequency point and/or the physical cell identifier according to the information to be updated after the activation time is reached, the updated local sub-network is different from at least one of the sub-network frequency point or the physical cell identifier before splitting, the existence of the other sub-network can be identified through a measurement and detection mode, the same-frequency interference is eliminated, and the influence of data transceiving is reduced.

As an optional embodiment of the present embodiment, the present optional embodiment further performs update optimization on the frequency point and/or the physical cell identifier of the present node according to the information to be updated as: and updating the frequency point of the node to a new frequency point and/or updating the physical cell identifier to a new physical cell identifier.

And when the second communication node judges that the time reaches the activation time, updating the frequency point of the node to a new frequency point, or updating the physical cell identifier to a new physical cell identifier, or updating the frequency point of the node to a new frequency point, and simultaneously updating the physical cell identifier to a new physical cell identifier.

As an alternative embodiment of the present embodiment, the further optimization of the present alternative embodiment includes: and generating third system information according to the information to be updated and the activation time, and broadcasting the third system information to other communication nodes in the subnet.

In this embodiment, the third system information may be specifically understood as information broadcasted by the node to other second communication nodes, which is used for information interaction. The third system information includes information to be updated and activation time, and may instruct other communication nodes to change frequency points and/or physical cell identifiers. The node generates third system information according to the information to be updated and the activation time and in a certain format, wherein the third system information comprises the information to be updated and the activation time, and the information to be updated and the activation time are broadcasted to other communication nodes in the subnet so that each communication node can change the frequency point and/or the physical cell identifier.

It should be noted that, for a second communication node, it may receive the system information including the information to be updated and the activation time sent by a plurality of communication nodes, and after it has received the system information including the information to be updated and the activation time, save the information to be updated and the activation time, and wait for the activation time to arrive, so as to implement the change of the frequency point or the physical cell identifier. When the activation time does not reach yet, the second communication node receives the system information carrying the same activation time and the information to be updated sent by other communication nodes, and at this time, the stored information to be updated and activation time can be updated, or the stored information to be updated and activation time can not be updated, and the result is the same.

As an alternative embodiment of the present embodiment, the further optimization of the present alternative embodiment includes: the third system information also comprises node information of the node;

the node information of the node includes: the method comprises the steps of identifying a node, off-network indicating information, identifying a new main control node, identifying a frequency point of a subnet, identifying a physical cell of the subnet, and jumping number from the node to any node.

In the embodiment of the present application, the generation manner of the third system information is the same as the generation manner of the first system information, and will not be described herein.

Fig. 6 is a diagram illustrating an implementation example of the same-frequency subnet fusion of a second communication node according to an embodiment of the present invention, where the second communication node is a non-master node in a new subnet.

S601, the second communication node successfully accesses the network.

S602, receiving second system information containing the changed new frequency point and/or new physical cell identifier PCI and activation time.

The master change information may also be received upon or prior to receiving the second system information.

S603, deleting the related information of the original master control node, updating the information of the new master control node, storing the new frequency point and/or the new PCI and the activation time, generating third system information and broadcasting.

S604, when the activation time is reached, a new frequency point and/or PCI is enabled (i.e., the frequency point of the present node is updated to a new frequency point and/or the PCI of the present node is updated to a new PCI).

S605, starting subnet detection to identify a new subnet.

S606, the measurement detects other subnets.

S607, trying a different frequency sub-network fusion strategy to carry out sub-network combination.

Example IV

Fig. 7 is a schematic structural diagram of a co-frequency subnet fusion device according to a fourth embodiment of the invention. As shown in fig. 7, the apparatus includes: a detection module 71, a first determination module 72, a first broadcast module 73 and a first update module 74.

The detection module 71 is configured to change the node to a new master node after detecting that the original master node is off-line;

a first determining module 72, configured to determine information to be updated and an activation time, where the information to be updated includes at least one of a new frequency point and a new physical cell identifier;

a first broadcasting module 73, configured to generate first system information according to the information to be updated and the activation time, and broadcast the first system information to second communication nodes in the local subnet, so that each second communication node updates according to the first system information;

and the first updating module 74 is configured to update the frequency point and/or the physical cell identifier of the node according to the information to be updated after the activation time is reached, so that the updated subnet is subjected to subnet fusion.

The embodiment of the invention provides a same-frequency subnet fusion device, which solves the problem that subnet splitting caused by the off-network of an original master control node cannot be fused, and after the first communication node detects the off-network of the original master control node, the first communication node changes to a new master control node, and then broadcasts system information comprising information to be updated and activation time to a second communication node in a local subnet, so that the second communication node and the local node can update frequency points and/or physical cell identifiers according to the information to be updated after the activation time is reached, the updated local subnet is different from at least one of the subnet frequency points or physical cell identifiers before splitting, and further the existence of the other party can be identified through a measurement and detection mode, thereby completing the subnet fusion, eliminating the same-frequency interference and reducing the influence of data transceiving.

Optionally, the apparatus further comprises:

the detection module is used for detecting whether the original master control node is off-line; optionally, the detection module is specifically configured to detect the hop count of the own node and the original master node; and when the hop count meets a preset condition, determining that the original master control node is off-line.

Optionally, the first determining module 72 includes:

the query unit is used for querying a predetermined frequency point data table, and screening new frequency points and/or new physical cell identifiers from the frequency point data table to serve as information to be updated;

the hop count determining unit is used for determining the maximum hop count according to the current network topology of the home subnet;

and the time determining unit is used for determining the activation time according to the maximum hop count.

Optionally, the first updating module 74 is specifically configured to update the frequency point of the node to the new frequency point and/or update the physical cell identifier to the new physical cell identifier.

Optionally, the first system information further includes node information of the first communication node;

the node information of the first communication node includes at least one of: the identification of the node, the off-network indication information, the identification of the new main control node, the frequency point of the subnet, the physical cell identification of the subnet and the hop count from the node to any node.

The same-frequency subnet fusion device provided by the embodiment of the invention can execute the same-frequency subnet fusion method provided by the first embodiment or the second embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.

Example five

Fig. 8 is a schematic structural diagram of a co-frequency subnet fusion device according to a fifth embodiment of the invention. As shown in fig. 8, the apparatus includes: a receiving module 81, a second determining module 82 and a second updating module 83.

Wherein, the receiving module 81 is configured to receive second system information, where the second system information is determined according to the first system information;

a second determining module 82, configured to determine information to be updated and an activation time according to the second system information, where the information to be updated includes at least one of a new frequency point and a new physical cell identifier;

and the second updating module 83 is configured to update the frequency point and/or the physical cell identifier of the node according to the information to be updated after the activation time is reached, so that the updated subnet is subjected to subnet fusion.

The embodiment of the invention provides a same-frequency subnet fusion device, which solves the problem that subnet splitting caused by an original master node after off-network cannot be fused, a second communication node receives second system information, the second system information is determined according to first system information, information to be updated and activation time are determined by analyzing the second system information, the information to be updated comprises at least one of a new frequency point and a new physical cell identifier, the second communication node can update the frequency point and/or the physical cell identifier according to the information to be updated after the activation time is reached, the updated local subnet is different from at least one of the subnet frequency point or the physical cell identifier before splitting, the existence of the other party can be identified through a measurement and detection mode, the subnet fusion is completed, the same-frequency interference is eliminated, and the influence of data transceiving is reduced.

Optionally, the second updating module 83 is specifically configured to: and updating the frequency point of the node to the new frequency point and/or updating the physical cell identifier to the new physical cell identifier.

Optionally, the apparatus further comprises: and the second broadcasting module is used for generating third system information according to the information to be updated and the activation time and broadcasting the third system information to other communication nodes in the subnet.

Optionally, the third system information further includes node information of the node;

The same-frequency subnet fusion device provided by the embodiment of the invention can execute the same-frequency subnet fusion method provided by the third embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.

Example six

Fig. 9 shows a schematic diagram of a communication node 90 that may be used to implement an embodiment of the invention. The communication nodes may be mobile terminals, servers, blade servers, and other suitable intelligent devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the inventions described and/or claimed herein.

As shown in fig. 9, the communication node 90 includes at least one processor 91, and a memory communicatively connected to the at least one processor 91, such as a Read Only Memory (ROM) 92, a Random Access Memory (RAM) 93, etc., in which the memory stores a computer program executable by the at least one processor, and the processor 91 may perform various appropriate actions and processes according to the computer program stored in the Read Only Memory (ROM) 92 or the computer program loaded from the storage unit 98 into the Random Access Memory (RAM) 93. In the RAM 93, various programs and data required for the operation of the communication node 90 can also be stored. The processor 91, ROM 92 and RAM 93 are connected to each other by a bus 94. An input/output (I/O) interface 95 is also connected to bus 94.

Various components in communication node 90 are connected to I/O interface 95, including: an input unit 96 such as a keyboard, a mouse, etc.; an output unit 97 such as various types of displays, speakers, and the like; a storage unit 98 such as a magnetic disk, an optical disk, or the like; and a communication unit 99 such as a network card, modem, wireless communication transceiver, etc. The communication unit 99 allows the communication node 90 to exchange information/data with other devices via a computer network, such as the internet, and/or various telecommunication networks.

The processor 91 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of processor 91 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, digital Signal Processors (DSPs), and any suitable processor, controller, microcontroller, etc. The processor 91 performs the various methods and processes described above, such as the on-channel subnet fusion method.

In some embodiments, the on-channel subnetwork fusion method may be implemented as a computer program tangibly embodied on a computer-readable storage medium, such as storage unit 98. In some embodiments, part or all of the computer program may be loaded and/or installed onto the communication node 90 via the ROM 92 and/or the communication unit 99. When the computer program is loaded into RAM 93 and executed by processor 91, one or more steps of the on-channel subnet fusion method described above may be performed. Alternatively, in other embodiments, processor 91 may be configured to perform the on-channel subnet fusion method in any other suitable manner (e.g., by means of firmware).

Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuit systems, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems On Chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.

A computer program for carrying out methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be implemented. The computer program may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.

In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) through which a user can provide input to the electronic device. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.

The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the internet.

The computing system may include clients and servers. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical hosts and VPS service are overcome.

It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.

The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims

1. The same-frequency subnet fusion method is characterized by being applied to a first communication node and comprising the following steps:

2. The method as recited in claim 1, further comprising: detecting whether an original master node is off-line;

wherein, detect whether former master control node is off-line, specifically include:

detecting the hop count of the node and the original master node;

and when the hop count meets a preset condition, determining that the original master control node is off-line.

3. The method of claim 1, wherein the determining the information to be updated and the activation time comprises:

inquiring a predetermined frequency point data table, and screening out new frequency points and/or new physical cell identifiers from the frequency point data table as information to be updated;

determining the maximum hop count according to the current network topology of the home subnet;

and determining the activation time according to the maximum hop count.

4. The method according to claim 1, wherein the updating the frequency point and/or the physical cell identifier of the node according to the information to be updated includes:

and updating the frequency point of the node to the new frequency point and/or updating the physical cell identifier to the new physical cell identifier.

5. The method according to any of claims 1-4, wherein the first system information further comprises node information of a first communication node;

6. The same-frequency subnet fusion method is characterized by being applied to a second communication node and comprising the following steps:

7. The method according to claim 6, wherein the updating the frequency point and/or the physical cell identifier of the node according to the information to be updated includes:

8. The method according to any one of claims 6-7, further comprising:

and generating third system information according to the information to be updated and the activation time, and broadcasting the third system information to other communication nodes in the subnet.

9. The method of claim 8, wherein the third system information further comprises node information of the node;

10. An on-channel subnetwork convergence device, comprising:

11. An on-channel subnetwork convergence device, comprising:

12. A communication node, the communication node comprising:

at least one processor; and

a memory communicatively coupled to the at least one processor; wherein,,

the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the on-channel subnet fusion method of any one of claims 1-9.

13. A computer readable storage medium storing computer instructions for causing a processor to perform the on-channel subnet fusion method according to any one of claims 1 to 9.