CN115002093B - Method for internal and external remote communication under complex mobile scene - Google Patents
Method for internal and external remote communication under complex mobile scene Download PDFInfo
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- CN115002093B CN115002093B CN202210602437.7A CN202210602437A CN115002093B CN 115002093 B CN115002093 B CN 115002093B CN 202210602437 A CN202210602437 A CN 202210602437A CN 115002093 B CN115002093 B CN 115002093B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
- H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/50—Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
- H04W80/06—Transport layer protocols, e.g. TCP [Transport Control Protocol] over wireless
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a method for internal and external remote communication in a complex mobile scene, which comprises the following steps: the method comprises the steps of arranging hardware, arranging label switching equipment in n local mobile carriers, arranging wireless switching equipment, 5G CPE and wireless broadband private network equipment in at least one local mobile carrier, arranging the wireless switching equipment, the 5G CPE and a plurality of wireless broadband private network equipment in a centralized control center of a remote centralized control end, wherein the 5G CPE supports a 5G channel as a main wireless channel to realize the access function of a 5G public network, the wireless broadband private network equipment is used as a standby wireless link equipment, and the wireless broadband private network equipment and the similar equipment of the remote centralized control end realize the distributed networking function of a centerless ad hoc network under the conditions of non-line-of-sight and rapid movement; the 5G public network of external wireless communication and the wireless private network without center and self-sensing are integrated, the comprehensive factors of internal and external communication are judged, and the switching equipment is symmetrically arranged to synthesize the communication system level solution, so that the internal forwarding efficiency of data is greatly improved, and the smoothness of wireless communication is ensured.
Description
Technical Field
The invention belongs to the field of wired and wireless converged communication, and particularly relates to a method for internal and external remote communication in a complex mobile scene.
Background
In practical engineering applications, there is a need for scenarios such as ship-shore communication, automobile transportation, train escort, etc., and devices in a mobile transportation carrier can communicate with the outside through an internal wired network and an external wireless network. The requirements include technical problems related to the whole service data flow, such as efficient exchange transmission of internal data, communication of wireless networks, construction and fusion of various wireless networks, and the like. The technologies need to solve the problems of bandwidth statistical multiplexing and efficient data forwarding on the wired side, and need to realize the functions of eliminating signal blind areas, high-bandwidth communication under vibration conditions, smooth switching of switching different wireless networks and the like on the wireless side.
Currently, telecommunication is required to implement a communication system level design covering the aspects of wired network, wireless communication, and fusion and communication of both in a mobile scenario.
1. The internal wired network is transited from SDH rigid 'pipeline' age to label switching 'flexible pipeline age', and the data switching is realized by adopting Ethernet two-layer and three-layer switching, and a more efficient data switching mode is needed when the network is large in scale, has excessive cascade number and is sensitive to service transmission delay.
2. The wireless network has the requirements of short wave, ultrashort wave, satellite communication, microwave broadband, 4G/5G and the like, and covers different transmission distances, bandwidths and the like. In conventional wireless networking technologies, a point-to-multipoint topology is often adopted, and there is generally a central node in the topology, for example, a base station in a mobile communication system, an Access Point (AP) in an 802.11 Wireless Local Area Network (WLAN), and so on. The central node is connected with each wireless terminal through a single-hop wireless link, and controls the access of each wireless terminal to a wireless network; and meanwhile, the connection to the backbone network is provided by connecting the wired backbone network with the wired link. From this point of view, the complexity of the application and the limitation of the scene are increased. There is a need for a flattened, centerless network that has no logically or physically central nodes, all of which are peer nodes. In such a peer-to-peer network architecture, each network node is connected to other network nodes in a wireless multi-hop manner by neighboring nodes. In addition, from the viewpoint of multi-plane wireless network convergence, the problem of single means exists in most of the current applications of wireless communication, or the special modes such as wireless private network, guard and the like are utilized, so that low-cost public communication resources are not reasonably utilized, the bandwidth is limited, and the investment cost is overlarge. Or the wireless communication resources provided by operators are excessively depended, and in the areas where personnel are rare, such as mountains, deserts, gobi, oceans and the like, the base station resources are insufficient, the signal blind areas are more, and the effective global high-speed communication cannot be ensured. Different planes of wireless heterogeneous networks need to be constructed, and fusion and complementation of the networks are achieved.
3. In a few scenes such as mobile escort, a technology for realizing switching of different wireless planes is presented, the switching is triggered based on single or few factors such as wireless signal strength, bit error rate and the like, an asymmetric layout is adopted, and detection only relates to a front-end link state through modes such as MAC address, route learning, physical link detection and the like, a full-service transmission link is not covered, the accessibility of service data is poor, and the method cannot adapt to the application of various differentiated scenes. From the angles of reliability of internal and external remote communication, reachable range of data flow and the like, different wireless plane switching technologies based on various triggering strategies and guaranteeing full-service path communication are required to be researched.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a method for internal and external remote communication under a complex mobile scene, which adopts high-efficiency MPLS-TP label switching of internal data, the integration of 5G public network and centerless and self-sensing wireless private network of external wireless communication, the comprehensive factor judgment of internal and external communication, and the symmetrical layout of switching equipment to synthesize a communication system-level solution, thereby greatly improving the internal forwarding efficiency of data, guaranteeing the smoothness of wireless communication, reducing the frequent switching of working links between wireless networks, meeting the requirements of high reliability and real-time performance and improving the effectiveness of service application.
In order to achieve the above purpose, the invention adopts the following technical scheme: a method for remote communication between inside and outside in a complex mobile scene comprises the following steps:
1. the method comprises the steps of arranging hardware, arranging label switching equipment in n local mobile carriers, arranging wireless switching equipment, 5G CPE and wireless broadband private network equipment in at least one local mobile carrier, arranging the wireless switching equipment, the 5G CPE and a plurality of wireless broadband private network equipment in a centralized control center of a remote centralized control end, supporting a 5G channel by the 5G CPE as a main wireless channel to realize the access function of a 5G public network, using the wireless broadband private network equipment as a standby wireless link equipment, realizing the distributed networking function of a centerless ad hoc network with similar equipment of the remote centralized control end under the condition of non-line-of-sight and rapid movement, and aggregating wired Ethernet ports of the multipath wireless broadband private network equipment by the remote centralized control end and performing wireless link judgment processing together with the 5G link;
2. the method comprises the steps that local mobile carrier end data processing is carried out, label switching equipment of the local mobile carrier end realizes label switching of data inside n mobile carriers, when a plurality of mobile carriers need to carry out mutual high-bandwidth reliable and stable communication in a standing state, a wired annular bidirectional network is built among different mobile carriers, local communication terminal data is forwarded to wireless switching equipment through the annular bidirectional network to realize state detection of a service channel through an OAM link, comprehensive judgment is carried out by combining wireless signal intensity, quality and historical data, an available wireless link is determined, and data is selected to be sent to a remote centralized control end through 5G CPE or wireless broadband private network equipment;
3. after the data enter the remote wireless switching equipment, the remote wireless switching equipment performs different forwarding treatments on the data of the wireless channel according to the condition of cooperative selection with the local wireless switching equipment, and if the 5G channel is a working channel, the data is forwarded to the remote communication terminal; if the wireless ad hoc network channel is a working channel, the data is subjected to link aggregation processing and then forwarded to the far-end communication terminal.
In the above technical solution, in step 1, a switching module is disposed in the wireless switching device of the remote centralized control end, and the switching module carries an ethernet two-layer and three-layer switching protocol to implement a link aggregation function.
In the above technical solution, in step 2, the wired ring bidirectional network at the local mobile carrier end completes loop state detection through OAM frames sent every 3.3ms, and once the link abnormality of the primary path is found, the switching of the standby link is completed within 50ms, and the network is configured to support the mobile carrier random access function.
In the above technical solution, in step 2, the wireless switching device makes a decision according to the wireless signal strength, and if the 5G signal is comprehensively decided with the wireless private network signal strength and quality, and the historical data, the 5G channel is selected for implementation when the difference is not greater than the empirical learning value; if the 5G signal is stronger than the wireless private network, selecting a 5G channel; if a 5G channel is selected, the data is transmitted to the far end through a 5G CPE-5G public network-5G CPE.
In the above technical scheme, in step 2, if the signal strength and quality of the wireless private network are greater than 5G, selecting a wireless private network channel; if the wireless ad hoc network channel is selected, the data is transmitted to the far end through the wireless broadband private network equipment with symmetrical layout.
The beneficial effects of the invention are as follows:
1. the label switching is adopted to realize local internal data switching with strong statistic multiplexing capability, large QOS supporting force and high forwarding efficiency, and provides a flexible pipeline and meanwhile provides protection and OAM functions of a rigid pipeline. When parking or moving the carrier to cooperatively go forward, the node has the function of random access;
2. the main and standby wireless links are designed aiming at the condition that the wireless links are easily influenced by weather, geographical environment and the like. And selecting 5G as a main high-bandwidth wireless transmission link. By adopting SDR architecture, the wireless self-organizing network without center networking and with adjustable frequency is realized by adopting a self-adapting modulation coding technology based on channel perception, a network scale dynamic self-adapting technology based on perception, a fast routing and networking technology based on perception, a fisheye routing protocol technology based on perception, a frequency set self-adapting technology based on perception and the like;
3. and intelligent judgment is carried out based on comprehensive factors such as wireless signal strength, quality, link handshake state, historical data and the like, an optimal communication link is selected, and communication in all regions and all time domains is guaranteed to the greatest extent.
Drawings
Fig. 1 is a block diagram of the structure of the present invention.
Fig. 2 is a schematic diagram of an implementation of the present invention.
Fig. 3 is a schematic diagram of the networking and data flow of the present invention.
Fig. 4 is a schematic diagram of a wired side random access of the present invention.
Fig. 5 is a diagram of the encoding rule of the wired random access tag according to the present invention.
Fig. 6 is a flow chart of the following access processing of the present invention.
Fig. 7 is a block diagram of a wireless broadband baseband transmission portion of the present invention.
Fig. 8 is a block diagram of a wireless broadband baseband receiving portion of the present invention.
Fig. 9 is a diagram of a software architecture of the present invention.
FIG. 10 is a schematic diagram of the application of the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific examples.
A method for remote communication between inside and outside in a complex mobile scene comprises the following steps:
1. the hardware arrangement is shown in figure 1, label switching equipment is arranged in n local mobile carriers, wireless switching equipment, 5G CPE and wireless broadband private network equipment are arranged in at least one local mobile carrier end, a centralized control center of a remote centralized control end is provided with the wireless switching equipment, 5G PE and a plurality of wireless broadband private network equipment, the 5G CPE supports a 5G channel as a main wireless channel to realize the access function of a 5G public network, the wireless broadband private network equipment is used as a standby wireless link equipment, the wireless broadband private network equipment and the like equipment of the remote centralized control end realize the distributed networking function of a centerless ad hoc network under the conditions of non-line-of-sight and rapid movement, and the remote centralized control end aggregates wired Ethernet ports of the multipath wireless broadband private network equipment and then carries out wireless link judgment processing together with a 5G link;
2. the method comprises the steps that local mobile carrier end data processing is carried out, label switching equipment of the local mobile carrier end realizes label switching of data inside n mobile carriers, when a plurality of mobile carriers need to carry out mutual high-bandwidth reliable and stable communication in a standing state, a wired annular bidirectional network is built among different mobile carriers, local communication terminal data is forwarded to wireless switching equipment through the annular bidirectional network to realize state detection of a service channel through an OAM link, comprehensive judgment is carried out by combining wireless signal intensity, quality and historical data, an available wireless link is determined, and data is selected to be sent to a remote centralized control end through 5G CPE or wireless broadband private network equipment;
3. after the data enter the remote wireless switching equipment, the remote wireless switching equipment performs different forwarding treatments on the data of the wireless channel according to the condition of cooperative selection with the local wireless switching equipment, and if the 5G channel is a working channel, the data is forwarded to the remote communication terminal; if the wireless ad hoc network channel is a working channel, the data is subjected to link aggregation processing and then forwarded to the far-end communication terminal.
The local mobile carrier end is positioned in the area A, and a 5G network is selected according to the signal strength of the 5G public network signal; the local mobile carrier end is in the area B, the wireless broadband private network signal is better, and the wireless private network is selected according to the signal intensity air interface.
In the above technical solution, in step 1, a switching module is provided in the wireless switching device of the remote centralized control end, and the switching module carries an ethernet two-layer and three-layer switching protocol to implement a link aggregation function, so that wired ethernet ports of the multipath wireless broadband private network device are aggregated, and then together with a 5G link, a wireless link decision process is performed.
In the above technical solution, in step 2, the wired ring bidirectional network at the local mobile carrier end completes loop state detection through OAM frames sent every 3.3ms, and once the link abnormality of the primary path is found, the switching of the standby link is completed within 50ms, and the network is configured to support the mobile carrier random access function.
In the above technical solution, in step 2, the wireless switching device performs comprehensive decision according to the wireless signal strength and quality, and if the difference between the 5G signal and the wireless private network signal strength is not greater than the empirical learning value, selects the 5G channel for performing; if the 5G signal is stronger than the wireless private network (the difference is larger than the experience learning value), selecting a 5G channel; if the signal strength and quality of the wireless private network are higher than 5G (the difference is higher than the experience learning value), selecting a wireless private network channel; if a 5G channel is selected, transmitting data to a far end through a 5G CPE-5G public network-5G CPE; if the wireless ad hoc network channel is selected, the data is transmitted to the far end through the wireless broadband private network equipment with symmetrical layout.
At the remote centralized control end, after the data enter the remote wireless switching equipment, the remote wireless switching equipment performs different forwarding treatments on the data of the wireless channel according to the condition of cooperative selection with the local wireless switching equipment. If the 5G channel is a working channel, the data is forwarded to a far-end communication terminal; if the wireless ad hoc network channel is a working channel, the data is subjected to link aggregation processing and then forwarded to the far-end communication terminal.
As shown in fig. 2, the clock module AU5315 provides reference clocks of 156.25MHz, 125MHz, 25MHz, etc. required for internal label switching, route switching, data aggregation processing. The wired network part completes the data exchange inside the mobile carrier and among a plurality of mobile carriers, and adopts Loongson 2K1000 to realize the functions of label switching protocol stack processing, networking processing, random access label calculation, configuration and the like; the label switching module CTC5160 realizes label packaging, decapsulation and label-based data forwarding functions of service data. The wireless network part completes the functions of 5G public network access and self-organizing network, the 5G baseband chip is Balong 5000, the full-band use of FDD and TDD is supported, and the router forwarding module concurrent MT7621 realizes the forwarding of 5G air interface data to the wired network. The radio frequency processing AD9361 realizes the functions of A/D conversion, D/A conversion, filtering, gain adjustment and the like, the baseband processing is realized by TI AM3352 BZCDD 60 and xilinxCYCLONE 5CEFA9U19I7N, the innovative comprehensive use of technologies such as fast channel estimation, self-adaptive equalization, high-performance channel coding and decoding and the like is realized, the functions of AMC, AGC, ARQ and the like are completed, the good matching of a physical layer and an application layer is carried out, the real-time acquisition of a link state is carried out, the specific requirements and the actual test result are combined, the rapid change of wireless transmission among multiple nodes is adapted, the route optimization and the load balancing processing are carried out, and the core function of the wireless self-organizing network is realized. And the wireless switching part is used for completing OAM channel link handshake signal processing, signal intensity and quality detection and routing judgment by the Loongson 2K1000 II, and the CTC5120 is used for completing the forwarding of local wired network data on a 5G air interface or a wireless self-organizing network.
As shown in fig. 3, a ring network constructed by a label switching device (i.e., a wired network node, which may be deployed on 1 or more mobile carriers according to need) through which local communication terminal data is forwarded to a wireless switching device. And the wireless switching equipment transmits the local data to the corresponding wireless channel according to the link states of the 5G and the wireless ad hoc network.
As shown in fig. 4, the local mobile carrier end can form a wired network with a ring-shaped topological structure through the label switching equipment, and can support random access of network nodes at any position, so that automatic collusion of labeled data of original nodes at newly added nodes is realized, and the labeled data accessed by the newly added nodes are automatically colluded at the original nodes. Fig. 5 is a formulated tag coding rule, through which automatic tag value calculation and distribution are realized, and automatic and non-manual distribution of a wired side node along with an accessed tag value is ensured.
The invention is realized by the wired network with access, which is characterized in that when the business access amount of each node is constant, the label configuration of each node is needed to be realized automatically. Firstly, according to the unique production numbers recorded by each label switching device, each node label switching device compares the production numbers through a management channel, sequences from large to small, and generates unique node numbers (node numbers, namely positions in topology) according to the sequence. And according to the table label configuration principle, automatic label configuration is realized. Meanwhile, for the networking interface, the local IP addresses in the two directions are not in the same network segment, and the local IP address and the IP address of the opposite-end ring interface are in the same network segment. When a new label switching device (i.e., a new node) is accessed, each node of the network recalculates the node number, and finally determines the label value and reconfigures.
The following access processing flow is as shown in fig. 6; and for the newly added node, reading a unique production number recorded in the E2PROM, generating a handshake message containing information such as the newly added node identifier, the service ring-down node and the like according to the number, setting the node number in the message to be 1, sending the message to a downstream node, returning the message to the newly added node after the message passes through all nodes of a loop, analyzing the message, confirming the number of the loop nodes, generating a tag value according to a numbering strategy, and carrying out series connection or ring-up and ring-down processing on the service. For the original node, once the newly added node message is received, the existing node list and numbering strategy are compared, the newly added node label value is confirmed, the collusion or the upper and lower ring processing is carried out according to the lower ring information in the message, meanwhile, the number of network element nodes in the message is added with 1, and the network element nodes are sent to the downstream node.
As shown in fig. 7, the FPGA baseband processing section is a block diagram, and the transmitting section is mainly divided into bit-level processing and symbol-level processing, the bit-level processing mainly performs scrambling, data encoding, matching, and the like, and the symbol-level processing performs frame mapping and FFT processing for each channel. The receiving part is mainly divided into bit level processing and symbol level processing, the bit level processing mainly completes the demodulation, data matching, decoding descrambling and other processing of each channel, and the symbol level completes the synchronization processing, the correlation processing and the equalization processing of each antenna.
The software architecture of this aspect is shown in fig. 8.
(1) Physical layer
The wireless part realizes wireless transmission waveforms of the equipment and mainly comprises a carrier modulation technology, a channel coding technology, a multi-antenna technology and the like, and influences the receiving sensitivity, throughput, interference suppression capability and the like of the equipment. Through the brand new design of the transmission format of the physical layer, various fading caused in the high-speed moving process of the terminal is effectively resisted, and efficient and reliable air interface transmission is realized; and combining the measured data, and performing totally new optimization and processing on a receiver related receiving algorithm to obtain a better transmission effect.
The wired part realizes the drive configuration of the clock module and the Ethernet physical layer chip, and the label switching module SDK configuration.
(2) MAC layer
The wireless part configures the access mode and the resource using mode of the equipment. The networking protocol and the algorithm are realized in the MAC layer, so that compared with wireless ad hoc network equipment based on the IP layer, the cost of a plurality of data packets is reduced, the data processing efficiency is higher, and the time delay is lower. Meanwhile, the channel is estimated according to various factors such as time delay, signal quality (SNR), error code and the like by combining with the depth of a physical layer, so that a basis is provided for subsequent routing. In addition, different QoS grades are adopted for different services, and the service with high QoS grade is preferentially ensured.
The wired part realizes MAC address learning, MAC address table maintenance and tag list maintenance.
(3) Network layer
The wireless portion sets a matched routing algorithm based on network resource utilization, node switching time, network access time, and the like. The traditional routing protocol adopts a single active routing protocol or a passive routing protocol, the ad hoc network has the advantages of mixing the two routing protocols, realizing the rapid reconstruction of the route, and reducing the network overhead and realizing the intelligent route reconstruction without losing the accuracy of the route by mixing various routing algorithms and topology updating mechanisms. Based on the optimized link state routing protocol, nodes in the network periodically broadcast topology information, each node can have the whole network topology information, and the routing to the destination node can be quickly constructed. When the network topology changes due to the factors of access, departure, movement and the like, the source node can reconstruct the route to the destination node through a feedback mechanism.
The wired part realizes the functions of RSTP, two-layer exchange, label exchange, time synchronization protocol, label exchange, etc.
(4) Transport layer
The wireless part adopts ARQ technology, which not only ensures the reliable transmission of data, but also reduces the end-to-end retransmission. ARQ is used as an automatic retransmission technology, and in a network, wireless service data cannot reach an opposite end because of sudden deterioration of a wireless channel caused by factors such as wireless interference or obstruction, and the like, and a feedback mechanism of a receiving node can enable a sending node to quickly initiate retransmission, so that reliable transmission of the data is ensured, and the influence on performance caused by delay and the like caused by adopting end-to-end retransmission is avoided.
The wired part realizes the functions of node access along with meeting, selection of main and standby transmission channels and the like.
The application scenario of the present invention is shown in fig. 9: in the travelling state, the wireless access point carrier of the mobile terminal realizes data exchange in the vehicle (ship) through label exchange, and realizes communication with the remote end through judgment and switching of wireless channels and selection of a 5G or wireless private network. In the parking state, the wireless access point of the mobile terminal and node equipment of the method installed by other mobile carriers form a ring-shaped wired private network and the like, the random access of the mobile carriers can be realized, and communication equipment of other mobile carriers can communicate with a far end through a 5G or wireless private network provided by the wireless access point of the mobile terminal.
The label switching technology is used for constructing a plurality of bidirectional point-to-point connection channels based on label switching service, realizing label switching by adding a tunnel layer label and a pseudo wire layer label between a Type/length byte and a static load in an Ethernet data packet, and constructing a flexible transmission channel suitable for IP service characteristics by designating a next hop path through a destination IP or MAC address, thereby having networking capability suitable for various coarse and fine particle services and end-to-end; an operation, administration and maintenance mechanism (OAM) of a synchronous digital hierarchy technology is inherited, OAM packet transmission is carried out on a hardware bottom layer every 3.3ms in an out-of-band bandwidth mode, a perfect OAM system with point-to-point connection is provided, error detection and channel monitoring capability is guaranteed, rich protection modes such as loop, 1:1 and the like can be adopted, carrier-grade service protection switching (50 ms) can be realized when network faults are encountered, and service protection and recovery of a transmission grade are realized; by means of point-to-point connection, PHP (penultimate jump pop) and other mechanisms, efficient exchange of network links is achieved, and reliable and low-delay transmission of control data, video services and the like is guaranteed.
The adaptive modulation and coding technology based on channel perception is used for channel time domain and frequency domain channel estimation of signals through real-time dynamic perception of various parameters such as noise characteristics, fading characteristics, collision characteristics and the like of channels in a wireless ad hoc network system, and the optimal coding and modulation technology is selected by adopting an adaptive channel quality quantization and efficient real-time channel quality feedback mechanism based on channel occupation perception of blind detection, so that the maximum utilization of wireless channel transmission capacity is realized. The channel time domain and frequency domain channel estimation technology based on the reference signals, the channel occupation sensing technology based on blind detection, the self-adaptive channel quality quantization, the high-efficiency real-time channel quality feedback technology and the like are realized, the cost and the feedback accuracy are considered, and the high-efficiency broadband transmission is realized while the cost is reduced. Based on the perceived rapid routing and networking technology, according to the network topology and the corresponding change speed, the transmission period and the corresponding information quantity of topology information are adaptively adjusted, various transmission paths are fully utilized, the rapid routing switching of multi-hop links is realized, the routing convergence is accelerated, the transmission capacity of the whole network in a complex environment is enhanced, the real-time and efficient transmission of the service is ensured, and the high-capacity networking is realized. Based on the fish-eye routing protocol technology, dynamic self-adaption of system overhead is realized, nodes exchange topology information with neighbors according to the distance to a destination node by adopting different frequencies, the exchange frequency of the nodes close to the node is high, the exchange frequency of the nodes far from the node is low, the update frequency of the remote nodes is reduced as much as possible, and the overhead of the whole network is reduced.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention.
Claims (5)
1. A method for remote communication between inside and outside in a complex mobile scene is characterized in that: the method comprises the following steps:
(1) A hardware arrangement, arranging label switching devices in n local mobile carriers,
the wireless switching equipment, the 5G CPE and the wireless broadband private network equipment are arranged in at least one local mobile carrier terminal, the wireless switching equipment, the 5G CPE and a plurality of wireless broadband private network equipment are arranged in a centralized control center of a remote centralized control terminal, the 5G CPE supports a 5G channel as a main wireless channel to realize the access function of a 5G public network, the wireless broadband private network equipment is used as a standby wireless link equipment, the wireless broadband private network equipment and the like equipment of the remote centralized control terminal realize the distributed networking function of a centerless self-organizing network under the condition of non-line-of-sight and rapid movement, the remote centralized control terminal aggregates the wired Ethernet ports of the multipath wireless broadband private network equipment,
then carrying out radio link judgment processing together with the 5G link;
(2) The method comprises the steps that local mobile carrier end data processing is carried out, label switching equipment of the local mobile carrier end realizes label switching of data inside n mobile carriers, when a plurality of mobile carriers need to carry out mutual high-bandwidth reliable and stable communication in a standing state, a wired annular bidirectional network is built among different mobile carriers, local communication terminal data is forwarded to wireless switching equipment through the annular bidirectional network to realize state detection of a service channel through an OAM link, comprehensive judgment is carried out by combining wireless signal intensity, quality and historical data, an available wireless link is determined, and data is selected to be sent to a remote centralized control end through 5G CPE or wireless broadband private network equipment;
(3) The remote centralized control terminal processes the data, after the data enters the remote wireless switching equipment,
the remote wireless switching equipment performs different forwarding treatments on the data of the wireless channel according to the condition of cooperative selection with the local wireless switching equipment, and if the 5G channel is a working channel, the data is forwarded to the remote communication terminal; if the wireless ad hoc network channel is a working channel, the data is subjected to link aggregation processing and then forwarded to the far-end communication terminal.
2. The method for remote communication between inside and outside in a complex mobile scenario according to claim 1, wherein: and (2) the wireless switching equipment of the remote centralized control end in the step (1) is internally provided with a switching module, and the switching module carries an Ethernet two-layer and three-layer switching protocol to realize a link aggregation function.
3. The method for remote communication between inside and outside in a complex mobile scenario according to claim 1, wherein: in step 2, the wired ring bidirectional network at the local mobile carrier end completes loop state detection through an OAM frame sent every 3.3ms, and once the link abnormality of the main path is found, the switching of the standby link is completed within 50ms, and the network is configured to support the random access function of the mobile carrier.
4. The method for remote communication between inside and outside in a complex mobile scenario according to claim 1, wherein: in the step 2, the wireless switching equipment carries out comprehensive judgment according to the wireless signal intensity and quality and historical data, and if the difference between the 5G signal and the wireless private network signal intensity is not greater than an empirical learning value, a 5G channel is selected for carrying out; if the 5G signal is stronger than the wireless private network, selecting a 5G channel; if a 5G channel is selected, the data is transmitted to the far end through a 5G CPE-5G public network-5G CPE.
5. The method for remote communication between inside and outside in a complex mobile scenario according to claim 1, wherein: in the step 2, if the signal intensity and quality of the wireless private network are higher than 5G, selecting a wireless private network channel; if the wireless ad hoc network channel is selected, the data is transmitted to the far end through the wireless broadband private network equipment with symmetrical layout.
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