A DECT system using transformer cabinet

Abstract

The invention discloses a DECT system using a transformer substation, and relates to the technical field of wireless communication systems. The system comprises: a data transmission module, a node management module and a transmission plane management module, wherein the data transmission module is used to manage the topological network of DECT system transmission, the data transmission module comprises data transmission nodes and management nodes, the node management module is used to manage the position of each data transmission node, wherein the data transmission node is located inside the topological network, the management node is located at the boundary of the topological network, and is used to send networking connection signaling of connection direction and connection distance corresponding to a connection request, and the transmission plane management module is used to manage the position information of each data transmission node, thereby avoiding data transmission disorder caused by free networking of data transmission equipment in the DECT network, affecting the management mode of the original cabinet equipment by the cabinet management system, and ensuring that the data generated in the cabinet monitoring is effectively transmitted in real time.

Description

Technical Field

[0001] The invention relates to the technical field of wireless communication systems, in particular to a DECT system using a transformer cabinet. Background Art

[0002] In the past, DECT technology was the abbreviation of Digital Enhanced Cordless Telecommunications, which was mainly used in wireless telephone systems. With the development of communication technology, the DECT system was combined with the NR (New Air Interface) technology in 5G technology to derive DECT NR+ technology. DECT NR+ supports point-to-point, star and cluster-tree topologies. Cluster-tree topology is a star topology with branches. All clusters are connected to form a mesh network, which is an incomplete mesh because not all nodes are connected to each other as in a complete mesh topology.

[0003] DECT NR+ enables highly scalable dense networks, partly due to the autonomous and decentralized nature of the technology, so DECT NR+ has a good application prospect in the field of massive machine communication (mMTC). Massive machine communication scenarios include a large number of sensors collecting measurement data, such as smart meters. Such applications require low-maintenance and low-cost autonomous network structures.

[0004] In the data transmission scenario of the power system, due to the lack of organization and guidance, the free networking characteristics of the DECT system will also affect the communication network of the power system. When the data transmission unit of the power system destroys the original network structure, it will be difficult for relevant managers to find the corresponding data of the power equipment from a large amount of data, which will cause inconvenience to the data management after data collection. In addition, the substations in the power station have a relatively fixed position. Allowing the data transmission nodes to freely network without guiding the networking mode of the data transmission nodes in the substation will cause local network congestion, which will affect the entire power system Internet. Summary of the invention

[0005] The object of the present invention is to provide a DECT system using a transformer cabinet to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solution: a DECT system using a substation cabinet, the system including: a data transmission module, a node management module and a transmission plane management module, wherein the data transmission module is used to manage the topological network of the DECT system transmission, the data transmission module includes a data transmission node and a management node, the node management module is used to manage the position of each data transmission node, wherein the data transmission node is located inside the topological network, the management node is located at the boundary of the topological network, and is connected to the node management module, and is used to send networking connection signaling of the connection direction and connection distance corresponding to the connection request, and the transmission plane management module is used to manage the location information of each data transmission node.

[0007] Furthermore, a data transmission node is provided in each substation cabinet, wherein one data transmission node includes at least one data information collected by a data sensor for transmitting data, and the data sensor is used to monitor the physical signal in the substation cabinet.

[0008] Furthermore, a data transmission node is provided in each substation cabinet, wherein one data transmission node includes at least one data information collected by a data sensor for transmitting data, and the data sensor is used to monitor the physical signal in the substation cabinet.

[0009] Furthermore, the data transmission nodes that are linearly connected in the network are classified as first-category transmission nodes, and the remaining data transmission nodes are classified as second-category transmission nodes.

[0010] Further, the transmission plane management module includes: a first plane management unit, a second plane management unit and a data marking unit, wherein the first plane management unit is used to manage the location information of the data transmission nodes in the first plane, and in the initial state of the DECT network, all the data transmission nodes are located in the first plane; the second plane management unit is used to manage the location information of the data transmission nodes in the second plane;

[0011] Further, the data marking unit is used to mark the data transmission nodes in the first plane, and the marked data transmission nodes enter the second plane;

[0012] In the process of collecting data from electrical cabinets, there is a situation where data collection is needed for some of the electrical cabinets. If the method of collecting data from all electrical cabinets is still followed, a large amount of unnecessary data information will be collected, which will bring unnecessary difficulties to the subsequent data sorting;

[0013] Therefore, by utilizing the characteristic that the data transmission nodes in the DECT system can freely form a network, the selected data transmission nodes are mapped to a new management plane, and the network is formed in the new management plane;

[0014] However, in the traditional sense, the data transmission nodes in DECT only have the characteristics of domain discovery. If the distance between two data transmission nodes is too far, there may be a problem of being unable to perform topological connection. Therefore, the data transmission nodes that are independent of the established network topology are obtained, and the location information of the independent nodes is sent to the topological network in the new management plane, so that the data transmission nodes in the topological network can purposefully perform self-organizing network discovery and incorporate the independent nodes into the new management plane.

[0015] Furthermore, the node management module includes: a marking node management unit, a networking supervision unit and a networking signaling sending unit, wherein the marking node management unit is used to obtain the transmission nodes in the second plane, the networking supervision unit is used to supervise whether the transmission nodes that have completed the self-organizing network in the second plane are consistent with the transmission nodes in the marking node management unit, and the networking signaling sending unit is used to obtain the data transmission unit that has not completed the self-organizing network, and send the networking connection signaling from the data transmission unit that is closest to the data transmission unit and has completed the self-organizing network.

[0016] Furthermore, the linear connection of the first type of transmission nodes includes: several data transmission nodes are connected through data transmission links to form a non-branched linear topology network, each node in the linear topology network is a first type of transmission node, wherein any linear topology network is a node chain, and the second type of transmission nodes connect at least two node chains.

[0017] Furthermore, the transmission node includes a transmission verification submodule and a transmission adjustment submodule. The transmission verification submodule is used to verify the stability of the self-organizing network connection in the DECT network. The transmission adjustment submodule is used to select a new uplink transmission node for any data transmission node after any data transmission node is disconnected from the uplink transmission node.

[0018] Furthermore, the transmission verification submodule includes: a connection management unit, an error rate calculation unit and a connection request feedback unit, wherein the connection management unit is used to send a request connection verification packet, and after obtaining the networking connection signaling, sends a request connection verification packet according to the connection direction and connection distance provided by the networking connection signaling, or sends a request connection verification packet after receiving the first connection signaling, and the error rate calculation unit is used to calculate the error rate of the received request connection verification packet after receiving the request connection verification packet, and the connection request feedback unit: sends the first connection signaling to the outside of the transmission node at rated power.

[0019] Furthermore, the transmission adjustment submodule includes: an error rate screening unit, a delay calculation unit, a logical distance management unit and a link selection unit, wherein the error rate screening unit is used to screen the data transmission nodes that send the request connection verification packets according to the error rate of the request connection verification packets, the delay calculation unit is used to calculate the average delay of receiving several request connection verification packets sent by the same data transmission node, the logical distance management unit is used to send a second connection signaling, and obtain the logical distance between the two data transmission nodes by obtaining the number of second-type transmission nodes passed by the second connection signaling, and the link selection unit is used to reselect the upstream node of the transmission node.

[0020] The data transmission scenario in the power system is different from the data transmission scenario of general users. General users are more concerned about whether the network connection is smooth and do not care whether the network structure is orderly. The data transmission path in the power system needs to comply with the relevant management regulations of power equipment management and orderly transmit data. However, the DECT system itself lacks transmission management equipment and cannot configure the transmission connection permissions of devices in large quantities to reject inappropriate device access requests.

[0021] In the power system, different substations undertake different tasks. The tasks undertaken by the substations are distinguished by the location of the substations themselves and the types of adjacent substations. In the process of data transmission from device to device, the tasks undertaken by the substations on the same node chain are related. When the tasks of substations across node chains are related, there will be large differences. The more node chains two devices cross, the more obvious the differences in tasks will be.

[0022] Therefore, when a data transmission node is extracted from the DECT system and the remaining data transmission nodes are reconnected to the network topology in the first plane, the degree of correlation of the work undertaken by the substation cabinet needs to be considered, so as to preserve the original state of the network topology in the first plane as much as possible, avoid node congestion caused by the free connection of data transmission nodes and thus cause network failure, and give priority to selecting the upstream node of the same node chain as the upstream target for reconnection;

[0023] At the same time, it is also considered that the upstream nodes in the same node chain cannot meet the connection needs. Under the condition of ensuring network transmission, the upstream nodes are selected from the similar node chains.

[0024] Furthermore, a communication method using a DECT system of a transformer cabinet is provided, the method comprising:

[0025] Z1: The data transmission nodes obtained in the first plane form the second plane;

[0026] Z2: connect the free data transmission nodes in the second plane to the nearest topological network node, and disconnect the data transmission nodes in the second plane from the data transmission nodes in the first plane;

[0027] Z3: Perform connection verification on the disconnected data transmission nodes in the first plane and screen the candidate node set;

[0028] Z4: Evaluate candidate nodes and select new upstream nodes for the disconnected data transmission nodes in the first plane.

[0029] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: based on the characteristics of the self-organizing network and non-cellular network structure of the DECT communication system, the present invention designs a communication system for the electric cabinet equipment in the power station, and after extracting some data transmission nodes in the network topology structure for re-networking, guides the remaining data transmission nodes to re-network. In the process of re-networking, the network structure of the original network is retained, so that the remaining data transmission nodes are connected in an orderly manner. This avoids the data transmission disorder caused by the free networking of data transmission equipment after the network structure changes in the DECT network without network relay equipment, which affects the management mode of the electric cabinet management system for the original electric cabinet equipment, and ensures that the data generated in the electric cabinet monitoring is transmitted in real time and effectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0031] Figure 1 This is a schematic diagram of the structure of a DECT system using a transformer cabinet according to the present invention;

[0032] Figure 2 This is a schematic diagram of the structure of a data transmission module of a DECT system for a transformer cabinet according to the present invention;

[0033] Figure 3 This is a network structure diagram of a DECT system using a transformer cabinet according to the present invention. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figure 1 , Figure 2 and Figure 3 ,The present invention provides a technical solution: a DECT system using a transformer cabinet;

[0036] A DECT system using a transformer cabinet includes: a data transmission module, a node management module and a transmission plane management module, wherein the data transmission module is used to manage the topological network of the DECT system transmission, the data transmission module includes a data transmission node and a management node, the node management module is used to manage the position of each data transmission node, and is used to send a network connection signaling of a connection direction and a connection distance corresponding to a connection request, and the transmission plane management module is used to manage the position information of each data transmission node;

[0037] The data transmission module includes: a data transmission node is set in each substation cabinet, and one of the data transmission nodes includes at least one data information collected by a data sensor for transmitting data, and the data sensor is used to monitor the physical signal in the substation cabinet;

[0038] The data transmission nodes are connected through data transmission links, and the data in the data transmission links are exchanged through wireless networks; the data transmission nodes form a DECT network by self-organizing or manually planning data transmission links;

[0039] The management node is used to send management instructions to the DECT network.

[0040] The data transmission node includes a transmission verification submodule and a transmission adjustment submodule;

[0041] The transmission verification submodule is used to verify the stability of the ad hoc network connection in the DECT network, and the transmission adjustment submodule is used to select a new uplink transmission node for any data transmission node after any data transmission node is disconnected from the uplink transmission node.

[0042] The data transmission nodes are connected through data transmission links, and the data in the data transmission links are exchanged through wireless networks; the data transmission nodes form a DECT network by self-organizing or manually planning data transmission links;

[0043] The transmission adjustment submodule includes: an error rate screening unit, a delay calculation unit, a logical distance management unit and a link selection unit, wherein the error rate screening unit is used to screen the data transmission nodes that send the request connection verification packets according to the error rate of the request connection verification packets, the delay calculation unit is used to calculate the average delay of receiving several request connection verification packets sent by the same data transmission node, the logical distance management unit is used to send the second connection signaling, and obtain the logical distance between the two data transmission nodes by obtaining the number of second-type transmission nodes passed by the second connection signaling, and the link selection unit is used to reselect the upstream node of the transmission node.

[0044] Among them, the transmission adjustment submodule includes: an error rate screening unit, a delay calculation unit, a logical distance management unit and a link selection unit, wherein the error rate screening unit is used to screen the data transmission node that sends the request connection verification packet according to the error rate of the request connection verification packet, the delay calculation unit is used to calculate the average delay of receiving several request connection verification packets sent by the same data transmission node, the logical distance management unit is used to send the second connection signaling, and obtain the number of the second type of transmission nodes through which the second connection signaling passes to obtain the logical distance between the two data transmission nodes, and the link selection unit is used to reselect the uplink node of the transmission node;

[0045] The data marking unit is used to mark the data transmission nodes in the first plane, and the marked data transmission nodes enter the second plane;

[0046] The node management module includes: a marking node management unit, a networking supervision unit and a networking signaling sending unit, wherein the marking node management unit is used to obtain the transmission nodes in the second plane, the networking supervision unit is used to supervise whether the transmission nodes that have completed the self-organizing network in the second plane are consistent with the transmission nodes in the marking node management unit, and the networking signaling sending unit is used to obtain the data transmission unit that has not completed the self-organizing network, and send the networking connection signaling from the data transmission unit that is closest to the data transmission unit and has completed the self-organizing network.

[0047] like Figure 3 The data transmission nodes in the network structure diagram include nodeA11, nodeA12, nodeA13, nodeA21, nodeA22, nodeB23, nodeA31, nodeA32, nodeB33, among which nodeA11, nodeA12, nodeA13, nodeA21, nodeA22, nodeA31 and nodeA32 are first-class transmission nodes, and nodeB23 and nodeB33 are second-class transmission nodes; H is a management node,

[0048] Preferably, the communication method using the substation DECT system includes:

[0049] Z1: The data transmission nodes obtained in the first plane form the second plane;

[0050] Among them, Z1 includes:

[0051] S1: Acquire the marked data transmission nodes to form a second transmission node set R2, and manage all data transmission nodes in R2 through the second plane;

[0052] S2: Perform self-organizing networking on the data transmission nodes in the second plane through the networking mechanism of the DECT network, obtain the topological network of the data transmission nodes in the self-organizing network, and obtain the free data transmission node node_diss that is free from the topological network in the second plane;

[0053] S3: In the second plane, the data transmission node node_narrow closest to the free data transmission node and the topological network in the second plane is obtained, and the position information d1 is generated according to the direction and distance of node_diss relative to node_narrow. The data transmission node node_narrow sends a networking request signaling to the position d1 to complete the networking connection between node_diss and the topological network in the second plane;

[0054] Z2: connect the free data transmission nodes in the second plane to the nearest topological network node, and disconnect the data transmission nodes in the second plane from the data transmission nodes in the first plane;

[0055] Wherein, step Z2 includes:

[0056] S4: obtaining any first-class data transmission node node20 in the topological network in the second plane, obtaining the downlink node node11 connected to node20 in the first plane and the uplink node node12 connected to node20 in the first plane;

[0057] S5: node12 sends N request connection verification packets to node11, where each request connection verification packet is P. Node11 compares the received request connection verification packet with the locally stored request connection verification packet, and calculates the average error rate er0 of the received request connection verification packet and the average delay τ0 of the receiving process;

[0058] Z3: Perform connection verification on the disconnected data transmission nodes in the first plane and screen the candidate node set;

[0059] Among them, Z3 includes:

[0060] S6: node11 sends the first connection signaling in all directions at a rated transmission power W;

[0061] S7: After receiving the first connection signaling, the data transmission nodes around node11 send N connection verification request packets to node11. Node11 records the average error rate and average delay of each data transmission node sending the connection verification request packets.

[0062] S8: node11 selects data transmission nodes with an average error rate less than er0 and an average delay less than τ0, and records them in the candidate node set;

[0063] Z4: Evaluate candidate nodes and select new upstream nodes for the disconnected data transmission nodes in the first plane;

[0064] Among them, Z4 includes:

[0065] S9: Each data transmission node in the candidate node set sends a second connection signaling to node12, and sets an initial value ic of the logical distance. In the embodiment, the initial value of ic is 1. Each time the second connection signaling passes through the second type of transmission node, the count of the logical distance is increased by 1. The total count of the second connection signaling of the data transmission node reaching node12 is the logical distance of each data transmission node relative to node12.

[0066] S10: Calculate the evaluation value of each data transmission node in the candidate node set, where the evaluation value of the i-th data transmission node is fi, fi = eri × τi × Li, eri represents the average error rate of the i-th data transmission node sending N connection verification packets requesting to node11, τi represents the average delay of the i-th data transmission node sending N connection verification packets requesting to node11, and Li represents the logical distance of the i-th data transmission node relative to node12;

[0067] S11: Calculate the node evaluation value f0 of node12, f0 = er0 × τ0 × 1, compare all node evaluation values, and use the data transmission node with the lowest node evaluation value as the new upstream link of node11.

[0068] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0069] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A DECT system using a transformer cabinet, characterized in that: The system includes the following modules: a data transmission module, a node management module and a transmission plane management module, wherein the data transmission module is used to manage the topological network of the DECT system transmission, the data transmission module includes a data transmission node and a management node, the node management module is used to manage the location of each data transmission node, wherein the data transmission node is located inside the topological network, the management node is located at the boundary of the topological network, connected to the node management module, and used to send the networking connection signaling of the connection direction and connection distance corresponding to the connection request, and the transmission plane management module is used to manage the location information of each data transmission node; The transmission plane management module includes: a first plane management unit, a second plane management unit and a data marking unit, wherein the first plane management unit is used to manage the location information of the data transmission nodes in the first plane. In the initial state of the DECT network, all the data transmission nodes are located in the first plane. The second plane management unit is used to manage the location information of the data transmission nodes in the second plane. The data marking unit is used to mark the data transmission nodes in the first plane, and the marked data transmission nodes enter the second plane. There is communication isolation between the devices in the first plane and the second plane, and when the data transmission node is moved into the second plane, the data transmission link between the data transmission node in the second plane and the data transmission node in the first plane is cut off; The node management module includes: a marking node management unit, a networking supervision unit and a networking signaling sending unit, wherein the marking node management unit is used to obtain the transmission node in the second plane, the networking supervision unit is used to supervise whether the transmission node that completes the self-organizing network in the second plane is consistent with the transmission node in the marking node management unit, and the networking signaling sending unit is used to obtain the data transmission unit that has not completed the self-organizing network, and send the networking connection signaling from the data transmission unit that is closest to the data transmission unit and has completed the self-organizing network; The linear connection of the first type of transmission nodes includes: a number of data transmission nodes are connected through a data transmission link to form a non-bifurcated linear topology network, each node in the linear topology network is a first type of transmission node, wherein any linear topology network is a node chain; The data transmission node includes a transmission verification submodule and a transmission adjustment submodule, wherein the transmission verification submodule is used to verify the stability of the ad hoc network connection in the DECT network, and the transmission adjustment submodule is used to select a new uplink transmission node for any data transmission node after any data transmission node is disconnected from the uplink transmission node; The transmission verification submodule includes: a connection management unit, an error rate calculation unit and a connection request feedback unit, wherein the connection management unit is used to send a connection verification request packet, and after obtaining the networking connection signaling, send the connection verification request packet according to the connection direction and connection distance provided by the networking connection signaling, or send the connection verification request packet after receiving the first connection signaling, the error rate calculation unit is used to calculate the error rate of the received connection verification request packet after receiving the connection verification request packet, and the connection request feedback unit is used to send the first connection signaling to the outside of the transmission node at the rated power; The transmission adjustment submodule includes: an error rate screening unit, a delay calculation unit, a logical distance management unit and a link selection unit, wherein the error rate screening unit is used to screen the data transmission node that sends the request connection verification packet according to the error rate of the request connection verification packet, the delay calculation unit is used to calculate the average delay of receiving several request connection verification packets sent by the same data transmission node, the logical distance management unit is used to send the second connection signaling, and obtain the number of the second type of transmission nodes through which the second connection signaling passes to obtain the logical distance between the two data transmission nodes, and the link selection unit is used to reselect the uplink node of the transmission node; The DECT system comprises: Obtain data transmission nodes in the first plane to form a second plane; Connecting the free data transmission nodes in the second plane to the nearest topological network node, and disconnecting the data transmission nodes in the second plane from the data transmission nodes in the first plane; Perform connection verification on disconnected data transmission nodes in the first plane and screen a set of candidate nodes; Evaluate candidate nodes and select new uplink nodes for disconnected data transmission nodes in the first plane; In a power station protecting several substations, a data transmission node is set in each substation, wherein one data transmission node includes at least one data sensor for transmitting data information collected by the data sensor, and the data sensor is used to monitor the physical signal in the substation; The data transmission nodes are connected via data transmission links, and data in the data transmission links are exchanged via wireless networks; the data transmission nodes form a DECT network by self-organizing or manually planning data transmission links; Classifying the data transmission nodes that are linearly connected in the topological network as first-category transmission nodes, and the remaining data transmission nodes as second-category transmission nodes; The second type of transmission node is connected to at least two node chains.

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