CN113905388B - Fire control 5G emergent private network dynamic coverage system based on emergent communication knapsack - Google Patents
Fire control 5G emergent private network dynamic coverage system based on emergent communication knapsack Download PDFInfo
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- 238000013523 data management Methods 0.000 claims abstract description 7
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- 238000007726 management method Methods 0.000 claims description 15
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- 238000012795 verification Methods 0.000 claims description 5
- 239000012634 fragment Substances 0.000 claims description 4
- 238000013439 planning Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 230000008054 signal transmission Effects 0.000 abstract description 4
- 230000006870 function Effects 0.000 description 16
- 238000005516 engineering process Methods 0.000 description 10
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- 238000004364 calculation method Methods 0.000 description 3
- 238000010295 mobile communication Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/18—Network planning tools
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15507—Relay station based processing for cell extension or control of coverage area
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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 fire-fighting 5G emergency private network dynamic coverage system based on an emergency communication knapsack, which comprises a fire-fighting 5G emergency private network core network module and an individual self-networking dynamic coverage module; the fire-fighting 5G emergency private network core network module comprises a unified data management unit, a 5G private network core network, a user plane function, a multi-access edge computing unit, a 5G base station and the like; the individual self-networking dynamic coverage module comprises an individual shoulder-carried 5G emergency communication knapsack and a fire private network customization software unit, and is used for dynamically covering signals of the 5G private network in a building or a basement. The invention can dynamically construct stable and reliable 5G private network signal coverage in a communication blind area, ensures the reliability and stability of signal transmission, ensures the safety of firefighters and the command and dispatch of rescue work, and improves the rescue effect.
Description
Technical Field
The invention relates to the technical field of 5G communication, in particular to a fire-fighting 5G emergency private network dynamic coverage system based on an emergency communication knapsack.
Background
The fifth generation mobile communication technology is a new generation broadband mobile communication technology with the characteristics of high speed, low time delay and large connection, and is a network infrastructure for realizing man-machine object interconnection. In order to meet the application scene requirements of 5G diversification, the key performance indexes of 5G are more diversified. The ITU defines the eight key performance indicators of 5G, where high-rate, low-latency, large connections are the most prominent features of 5G, user experience rates up to 1Gbps, latency down to 1ms, and user connectivity up to 100 thousand connections per square kilometer. In the fire rescue process, a 5G communication technology is adopted, and real-time images of the rescue site and vital sign information of firefighters can be transmitted to the outside so as to ensure the rescue direction and the safety of firefighters.
However, when a fire disaster occurs, under the condition that the traditional indoor coverage system is paralyzed, the system is used for signal coverage blind areas such as in a high building, a basement and the like, the coverage area of a fire control communication network can be greatly reduced, communication signals outside a building cannot penetrate through the building to perform signal coverage, information feedback and rescue effects are affected, and certain defects exist.
Disclosure of Invention
The invention aims to provide a fire-fighting 5G emergency private network dynamic coverage system based on an emergency communication knapsack, which can dynamically construct stable and reliable 5G private network signal coverage in a communication blind area, ensure the reliability and stability of signal transmission, ensure the safety of firefighters and the command and dispatch of rescue work, and improve the rescue effect.
The invention is realized in the following way:
the fire-fighting 5G emergency private network dynamic coverage system based on the emergency communication knapsack comprises a fire-fighting 5G emergency private network core network module and an individual self-organizing network dynamic coverage module;
the fire-fighting 5G emergency private network core network module comprises a unified data management unit, a 5G private network core network, a user plane function, a multi-access edge computing unit, a 5G base station and the like;
the individual self-networking dynamic coverage module comprises an individual shoulder-carried 5G emergency communication knapsack and a fire private network customization software unit, and is used for dynamically covering signals of the 5G private network in a building or a basement.
The individual shoulder-carried 5G emergency communication backpack is used as a relay node to form a fire-fighting 5G emergency private network.
The fire private network customization software unit comprises a fire private network data stream management, an ad hoc network relay path software algorithm, a multicast cooperative video transmission algorithm and a wireless backhaul and access dynamic balancing algorithm.
And the fire private network customization software unit performs unified planning and management on the access and return links of the relay nodes through the ad hoc network relay path software algorithm.
And the fire private network customization software unit transmits the video stream through the multicast cooperative video transmission algorithm.
And the fire private network customization software unit improves the equipment resource utilization rate of the relay node through the dynamic balancing algorithm of wireless backhaul and access.
The fire protection private network customization software unit may run on the multi-access edge computing unit.
The invention has reasonable structural design, the condition of the return link is better through a relay path software algorithm, the problem of establishing a 5G self-return path and managing a route is solved, the integrity and the instantaneity of video stream data are ensured by adopting a multicast cooperative video transmission algorithm, thereby ensuring that the image transmission is more stable and reliable, the dynamic adjustment of equipment resources of the relay node is realized through a dynamic balancing algorithm, the equipment resources of the relay node are fully utilized, and the light weight of the equipment is ensured; the system can dynamically construct stable and reliable 5G private network signal coverage in a communication blind area, ensures the reliability and stability of signal transmission, ensures the safety of firefighters and the command and dispatch of rescue work, and improves the rescue effect.
Drawings
FIG. 1 is a block diagram of the overall structure of the dynamic coverage system of the fire protection 5G emergency private network based on an emergency communication backpack of the invention;
FIG. 2 is a diagram of a fire-fighting 5G emergency private network networking architecture of the dynamic coverage system of the fire-fighting 5G emergency private network based on an emergency communication backpack of the invention;
FIG. 3 is a network topology diagram of a firefighting 5G private network ad hoc network of the firefighting 5G emergency private network dynamic coverage system based on an emergency communication backpack of the present invention;
FIG. 4 is a schematic diagram of a multicast collaborative video transmission algorithm of the fire protection 5G emergency private network dynamic overlay system based on an emergency communication knapsack of the invention;
fig. 5 is a schematic diagram of an implementation of the emergency communication backpack-based fire protection 5G emergency private network dynamic coverage system of the present invention.
Detailed Description
The invention will be further described with reference to the drawings and the specific examples.
Referring to fig. 1, a fire-fighting 5G emergency private network dynamic coverage system based on an emergency communication backpack comprises a fire-fighting 5G emergency private network core network module and an individual self-organizing network dynamic coverage module;
the fire-fighting 5G emergency private network core network module comprises a unified data management unit, a 5G private network core network, a user plane function, a multi-access edge computing unit, a 5G base station and the like;
the individual self-networking dynamic coverage module comprises an individual shoulder-carried 5G emergency communication knapsack and a fire private network customization software unit, and is used for dynamically covering signals of the 5G private network in a building or a basement.
Specifically, the unified data management function unit is used for managing user data, including management of user identification, subscription data and authentication data, and registration management of user service network elements;
the 5G private network core network is used for processing connection management, session management, mobility management, and bearing signaling or control information;
the user plane function is used for bearing data traffic by the user plane of the private network core network and is responsible for forwarding the traffic between the wireless access network and the public network, reporting traffic service conditions, implementing QoS policies and the like;
the multi-access edge calculation is used for providing edge calculation capability, so that the data can be stored and processed locally, network delay is reduced, and the safety and privacy of the local data are protected;
the 5G base station is used for realizing the access of 5G users and the air interface transmission of user data, and comprises a baseband unit BBU, a radio frequency unit pRRU and the like, wherein the BBU mainly has the effects of centralized management of the whole base station system, including operation maintenance and signaling processing, completion of uplink and downlink user data baseband processing, provision of interfaces of the base station and a transmission network and completion of information interaction.
As shown in fig. 2, the network architecture diagram of the fire-fighting 5G emergency private network and the connection manner between the units are shown, where the unified data management function module, the 5G private network core network module, the user plane function module, the multi-access edge computing module and the 5G base station of the fire-fighting 5G emergency private network are deployed independently for the private network. The networking architecture of the fire-fighting 5G emergency private network shares 5G base stations (gNB) of operators on the RAN (radio access network) side, and a unified data management function module, a 5G private network core network module, a user plane function module and a multi-access edge computing module of the emergency private network are not shared with a public network. The core network equipment of the private network completes slicing classification and slicing functions, wireless data traffic is split on a fire-fighting 5G private network base station through fire-fighting private network data flow management, data traffic belonging to the public network is transmitted to the public network user plane function module, and data traffic belonging to the private network is transmitted to the private network user plane function module. The information distribution and fusion of multiple systems are realized at the base station side of the fire-fighting 5G private network, and related data such as image transmission information for fire fighting, individual intelligent terminal information, internet of things information and the like are processed and stored through the fire-fighting private network; and the voice, internet and other data flows of the mobile phone are still carried and processed by the public network, so that more specialized, faster and more efficient network access service is provided for the fire-fighting Internet of things equipment.
The individual shoulder-carried 5G emergency communication backpack is used as a relay node to form a fire-fighting 5G emergency private network. In this embodiment, the individual shoulder-carried 5G emergency communication backpack is a mobile 5G relay node of the fire protection 5G emergency private network, after entering a fire scene, the relay nodes are commonly assembled into a fire protection 5G emergency private network with movable dynamic coverage, the network topology diagram of the individual self-organizing network dynamic coverage system is shown in fig. 3, other firefighters need to be networked equipment to access nearby, the individual shoulder-carried 5G emergency communication backpack is composed of a 5G integrated pico base station module and a battery module, and because the relay nodes are mobile, a 5G wireless backhaul mode is adopted, a wireless access network and backhaul are integrated (according to a 3gpp 16 version protocol, the characteristics of a massive mimo beam are utilized), so that each relay node realizes more flexible, simple and movable functions through wireless self-backhaul, in the 5G wireless self-backhaul, a backhaul link and an access link share wireless spectrum resources through time division or frequency division modes, and the like, the transmission quality of the wireless backhaul link is effectively ensured, and the transmission reliability and effectiveness are improved; meanwhile, the relay node added in the fire-fighting private network can reduce the transmitting power of the fire-fighting 5G private network base station equipment, improve the system capacity and use experience of edge users, and is one of important technologies for meeting the requirements of 5G on high-speed mobile communication rate, fire-fighting Internet of things application, mass data equipment interconnection and the like, and the addition of the relay node can enable the network structure to become flexible, so that the network becomes more stable and reliable.
The fire private network customization software unit comprises a fire private network data stream management, an ad hoc network relay path software algorithm, a multicast cooperative video transmission algorithm and a wireless backhaul and access dynamic balancing algorithm. In this embodiment, the principle of the fire-fighting private network data flow management is as follows, under the architecture of the fire-fighting 5G emergency private network, the slicing classification and slicing functions are completed through the core network devices of the 5G public network and the fire-fighting private network, and the data flows of the private or public devices accessed through the 5G base station are respectively accessed into the user plane function units of the fire-fighting private network or the user plane function units of the 5G public network, so that the data flows respectively belonging to the fire-fighting 5G private network and the 5G public network are belonged to the corresponding networks. For example, the wireless data traffic is split on the fire-fighting 5G private network base station, the data traffic belonging to the public network is transmitted to the public network user plane functional unit, and the data traffic belonging to the private network is transmitted to the private network user plane functional unit. The information distribution and fusion of multiple systems are realized at the base station side of the fire-fighting 5G private network, and related data such as image transmission information for fire fighting, individual intelligent terminal information, internet of things information and the like are processed and stored through the fire-fighting private network; and the voice, internet and other data flows of the mobile phone are still carried and processed by the public network. In the fire-fighting 5G emergency private network, except for the 5G base station, the public network is isolated, and the data information in the network is collected at the RAN side at present with great difficulty, so that the safety of fire-fighting emergency data can be ensured, and the function of low network time delay is also provided.
And the fire private network customization software unit performs unified planning and management on the access and return links of the relay nodes through the ad hoc network relay path software algorithm. In the embodiment, the access and return links of the relay nodes in the individual self-organizing network dynamic coverage system are uniformly planned and managed through a relay path software algorithm. The working principle of the traditional terminal self-organizing relay algorithm is that after a relay node is started, the relay node actively initiates a discovery request, and responds after receiving the request, and the relay node selects an optimal relay node as a host base station according to the received signal strength, distance, available transmission resources, service loads and other comprehensive factors contained in a response message. After the algorithm establishes a mathematical model, the path establishment of the wireless self-backhaul network finds an optimal path. However, when firefighters enter a fire scene to rescue, the relay node is continuously moved, so that the network topology structure is changed at any time, and the wireless channel is unstable due to the influence of buildings, inherent facilities and severe surrounding environments, so that the node C cannot communicate with the base station as shown in fig. 3, and therefore, the node C needs to select a surrounding node (node B, node F or node D) to complete relay, so that information can be transmitted to the fire-fighting 5G private network base station. However, the adjacent nodes B, F, D are moving, so the topology of the ad hoc network is dynamically changed, the density distribution of the relay nodes is different at different times and different places, and the network topology is not fixed because the nodes move at non-uniform speed. In addition, from the safety point of view, the fire-fighting 5G ad hoc network has higher reliability requirements on real-time transmission of messages than the common network, so that the traditional terminal ad hoc relay technology cannot be directly applied to the fire-fighting 5G ad hoc network.
Furthermore, the ad hoc network relay path software algorithm meets the requirements of safe, stable, reliable, low-delay and the like of message transmission in the fire-fighting 5G ad hoc network, and the algorithm adopts an innovative multicast relay cooperation technology. The working principle of the algorithm is that the fire-fighting 5G private network base station sends information to be transmitted to a part of confirmed relay nodes, the relay nodes receiving the information send the information to unacknowledged relay nodes which do not receive the information yet in a multicast cooperation mode, namely, a single source node corresponds to a transmission process of a plurality of destination nodes. The algorithm combines the advantages of the multicast technology and the cooperation technology, and because the relay nodes in the group receive the same data flow, the network flow can be reduced, the coverage area can be enlarged, and the system throughput can be improved.
Specifically, in a preferred embodiment, a self-adaptive sensing relay selection algorithm based on a markov chain is designed, the topology structure of the environment is learned through a Q-learning algorithm in reinforcement learning, when a next forwarding node is selected by a current relay node, a node quality-based reward value and a position information-based reward value need to be considered simultaneously, and the reinforcement learning is considered as a learning process of serialization learning, so that the reinforcement learning is regarded as a discrete or continuous markov process, and the requirements of high reliability and low delay in the fire-fighting 5G private network self-organizing network routing technology are met through the optimization of the routing protocol.
And the fire private network customization software unit transmits the video stream through the multicast cooperative video transmission algorithm. In the embodiment, when the video stream is transmitted in the fire-fighting 5G emergency private network, a packet segmentation multicast cooperative transmission algorithm is adopted in order to ensure that frames are not lost and are not blocked. Each relay node has certain calculation power and buffer, the video stream is divided into a plurality of small fragments and verification information during transmission, the transmission is carried out through packet multicast cooperation, and the complete video stream is recombined at the core network base station. As shown in fig. 4, in order to illustrate the principle of a multicast collaborative video stream transmission algorithm in a group, a source node a receives a video stream V, divides the video stream V into n small segments V1-Vn and verification information, adopts a multicast mode to transmit the same video stream segments V1-Vn to all other nodes in the group, performs verification on a target node D, if a Vx segment has a defect, applies for a neighboring node to obtain the missing Vx segment, continues to transmit to the next neighboring group after the verification data stream is complete until a fire-fighting 5G private network base station receives the complete V1-Vn segment, and then performs merging to form the complete video stream V. Because the multicast cooperation algorithm is adopted for transmission, the temporary disconnection or fragment loss of a certain node in the group caused by movement or signal shielding does not influence the integrity of the data transmission of the whole group.
And the fire private network customization software unit improves the equipment resource utilization rate of the relay node through the dynamic balancing algorithm of wireless backhaul and access. In this embodiment, considering that the relay node needs firefighter to move back, the volume and weight of the relay node are reduced as much as possible, so that the backhaul link and the access link of the relay node adopt the same-frequency deployment (in-band), but the backhaul link occupies part of the system transmission resources. The dynamic balancing algorithm is to allocate system resources to appropriate access resources and appropriate backhaul resources of different relay nodes. If the access resources are too many and the backhaul resources are too few, the backhaul link becomes a wireless access transmission bottleneck. If more resources are allocated to the backhaul link, the transmission quality and the system capacity of the access link cannot be guaranteed, and the utilization rate of the backhaul link cannot be very high. If there is video stream transmission, the dynamic balancing algorithm allocates more resources to the backhaul link to ensure backhaul of the video stream, and at this time, the resources of the access link are relatively reduced. Once the video stream transmission is finished, the dynamic balancing algorithm will reclaim the resource of the return link and release the resource to the access link to ensure the access capacity of the private network. Therefore, the dynamic balancing algorithm searches the best balancing point between the access resource and the return resource, so that the system capacity, the spectrum efficiency, the power efficiency and the like are dynamically optimized.
The fire protection private network customization software unit may run on the multi-access edge computing unit. In the embodiment, the fire private network customization software unit can run on the multi-access edge computing unit, so that the safety and privacy of local data are ensured.
In operation, as shown in fig. 5, after the firefighting rescue team arrives at the fire scene, the firefighting 5G private network base station equipment and the 5G macro base station on the firefighting truck rapidly network to construct a core network of the firefighting 5G emergency private network, so as to complete 5G network signal coverage on the periphery of the fire scene. When fire fighters enter a building or an underground floor, the individual soldiers carried by the fire fighters carry 5G emergency communication backpacks to form 5G relay nodes, the 5G relay nodes enter communication blind areas such as buildings and basements, an individual soldier self-organizing network dynamic coverage system is built through self-organizing network relay path software algorithms, communication equipment carried by the fire fighters nearby the relay nodes is accessed nearby, communication with a command center is achieved, the communication comprises on-site audio and video signals and fighter position information, vital sign data are acquired accurately, when video backhaul is needed on a fire scene, a multicast cooperative video transmission algorithm carries out backhaul on backhaul video in a multi-wave cooperative mode, packet fragments are transmitted back, smooth video stream playback without blocking is achieved, relevant information is displayed on a display interface of the command system in real time, the command center can conveniently grasp on-site conditions in real time, when fire fighter communication signals fast fade into the communication blind areas, the self-organizing network cooperative relay technology is utilized, appropriate relay communication nodes are selected for the fire fighter, data transmission reliability is guaranteed, and meanwhile, wireless backhaul and access of a dynamic node equipment is balanced by means of wireless and the wireless backhaul and the access method is balanced, and the best dynamic resource access is achieved.
The invention has reasonable structural design, better condition of the return link, can support large-bandwidth high-speed data transmission, well solves the problems of 5G self-return path establishment and route management, adopts a multicast cooperative video transmission algorithm, ensures the integrity and instantaneity of video stream data, ensures more stable and reliable image transmission, realizes the dynamic adjustment of equipment resources of the relay node through a dynamic balancing algorithm, fully utilizes the equipment resources of the relay node, and ensures the light weight of equipment; the system can dynamically construct stable and reliable 5G private network signal coverage in a communication blind area, ensures the reliability and stability of signal transmission, ensures the safety of firefighters and the command and dispatch of rescue work, and improves the rescue effect.
The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention, therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (5)
1. A fire-fighting 5G emergency private network dynamic coverage system based on an emergency communication knapsack comprises a fire-fighting 5G emergency private network core network module and an individual self-organizing network dynamic coverage module;
the method is characterized in that: the fire-fighting 5G emergency private network core network module comprises a unified data management unit, a 5G private network core network, a user plane function, a multi-access edge computing unit and a 5G base station;
the individual self-networking dynamic coverage module comprises an individual shoulder-carried 5G emergency communication knapsack and a fire private network customization software unit, and is used for dynamically covering signals of the 5G private network in a building or a basement;
the individual shoulder-carried 5G emergency communication backpack is used as a relay node to form a fire-fighting 5G emergency private network;
the fire private network customization software unit comprises:
the data flow management of the fire-fighting private network is realized by respectively accessing the data flow of private or public equipment accessed by the 5G base station into the user plane functional unit of the fire-fighting private network or the user plane functional unit of the 5G public network, so that the data flows respectively belonging to the fire-fighting 5G private network and the 5G public network belong to the corresponding networks;
the self-organizing network relay path software algorithm is that the fire-fighting 5G private network base station sends the information to be transmitted to a part of confirmed relay nodes, and the relay nodes receiving the information send the information to unconfirmed relay nodes which do not receive the information yet in a multicast cooperation mode;
the multicast cooperation video transmission algorithm is characterized in that a video stream is divided into a plurality of small fragments and verification information when the fire-fighting 5G emergency private network is used for transmission, the video stream is transmitted through packet multicast cooperation, and the video stream is recombined into a complete video stream at a core network base station;
and when the video stream transmission is finished, the dynamic balancing algorithm withdraws the resources of the return link and releases the resources to the access link so as to ensure the access capacity of the private network.
2. The emergency communication backpack-based fire protection 5G emergency private network dynamic coverage system of claim 1, wherein: and the fire private network customization software unit performs unified planning and management on the access link and the return link of the relay node through the ad hoc network relay path software algorithm.
3. The emergency communication backpack-based fire protection 5G emergency private network dynamic coverage system of claim 1, wherein: and the fire private network customization software unit transmits the video stream through the multicast cooperative video transmission algorithm.
4. The emergency communication backpack-based fire protection 5G emergency private network dynamic coverage system of claim 1, wherein: and the fire private network customization software unit improves the equipment resource utilization rate of the relay node through the dynamic balancing algorithm of wireless backhaul and access.
5. The emergency communication backpack-based fire protection 5G emergency private network dynamic coverage system of claim 1, wherein: the fire protection private network customization software unit may run on the multi-access edge computing unit.
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