CN211670989U - Emergency rescue field communication system based on GPS Beidou positioning and MESH wireless ad hoc network - Google Patents

Emergency rescue field communication system based on GPS Beidou positioning and MESH wireless ad hoc network Download PDF

Info

Publication number
CN211670989U
CN211670989U CN202020110151.3U CN202020110151U CN211670989U CN 211670989 U CN211670989 U CN 211670989U CN 202020110151 U CN202020110151 U CN 202020110151U CN 211670989 U CN211670989 U CN 211670989U
Authority
CN
China
Prior art keywords
hoc network
base station
network
communication system
command
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202020110151.3U
Other languages
Chinese (zh)
Inventor
马鸿军
董云鹏
武振振
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henan Ma Che Hung Industrial Co ltd
Original Assignee
Henan Ma Che Hung Industrial Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Henan Ma Che Hung Industrial Co ltd filed Critical Henan Ma Che Hung Industrial Co ltd
Priority to CN202020110151.3U priority Critical patent/CN211670989U/en
Application granted granted Critical
Publication of CN211670989U publication Critical patent/CN211670989U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Mobile Radio Communication Systems (AREA)

Abstract

The utility model discloses an emergency rescue field communication system based on GPS big dipper location and MESH wireless ad hoc network, which is characterized in that the emergency rescue field communication system comprises a command center, an ad hoc network private network base station, an ad hoc network field command vehicle, an unmanned aerial vehicle, a single soldier and a GPS big dipper location satellite; the special base station of the ad hoc network is communicated with a command center through a radio and television optical fiber network, and the GPS Beidou positioning satellite is communicated with the command center, the ad hoc network field command vehicle, the unmanned aerial vehicle and the individual soldier signal; the ad hoc network private network base station, the ad hoc network field command vehicle, the unmanned aerial vehicle and the individual soldier are communicated with each other by adopting a tactical ad hoc network link module. The utility model discloses it is showing a bit to have that coverage is wide, sensitivity is high, the mobility is good, anti-interference and anti-fading capability is strong, transmission data rate is high, stability and reliability are outstanding etc. for command, speedily carry out rescue work, reconnaissance, emergent communication such as field operation provide remote, high quality, high rate, wireless real-time transmission's ideal solution.

Description

Emergency rescue field communication system based on GPS Beidou positioning and MESH wireless ad hoc network
Technical Field
The disclosure relates to the technical field of communication networks, in particular to an emergency rescue field communication system based on GPS Beidou positioning and MESH wireless ad hoc network.
Background
Under the current complex international and social environments, how to prevent and process public safety major emergencies becomes an important subject, and meanwhile, when the emergencies such as national safety, terrorist events, natural disasters, major traffic accidents and the like occur, how to rapidly, effectively, timely and orderly deploy defense to the site, implement various command schemes and instructions and reduce casualties and financial loss to the minimum is particularly important. However, the current communication network is not suitable for poor network environments, such as underground use, so that data communication is difficult to implement, the current working state and information of the mobile terminal are difficult to obtain, and corresponding fault causes cannot be obtained.
Therefore, it is necessary to develop a new emergency rescue scene communication system.
SUMMERY OF THE UTILITY MODEL
According to one aspect of the disclosure, an emergency rescue field communication system based on GPS Beidou positioning and MESH wireless ad hoc network is provided, which has the obvious advantages of wide coverage range, high sensitivity, good mobility, strong anti-interference and anti-fading capability, high transmission data rate, outstanding stability and reliability and the like, and provides an ideal solution of remote, high-quality, high-speed and wireless real-time transmission for emergency communication such as command, emergency, reconnaissance and field battle, and the emergency rescue field communication system comprises a command center, an ad hoc network private network base station, an ad hoc network field command vehicle, an unmanned aerial vehicle, an individual soldier and a GPS Beidou positioning satellite;
the special base station of the ad hoc network is communicated with a command center through a radio and television optical fiber network, and the GPS Beidou positioning satellite is communicated with the command center, the ad hoc network field command vehicle, the unmanned aerial vehicle and the individual soldier signal;
the ad hoc network private network base station, the ad hoc network field command vehicle, the unmanned aerial vehicle and the individual soldier are communicated with each other by adopting a tactical ad hoc network link module.
According to one embodiment, the tactical ad hoc network link module comprises an MESH transmission base station and a background management module, wherein the MESH transmission base station adopts a photoelectric composite interface and is used for data access, data relay and data aggregation.
According to one embodiment, the MESH transmission base station is provided with a WIFI access module for accessing the mobile terminal.
According to one embodiment, the ad hoc network private network base station adopts a 3G private network base station, or a 4G private network base station or a private network LTE base station.
According to one embodiment, a background management module of the tactical ad hoc network link module adopts a Netpool management software module which comprises five functional parts of topology presentation, equipment management, system setting, SDK and client software.
According to one embodiment, the mobile terminal is one or more of a laptop, a smartphone, and a PAD.
According to the emergency rescue field communication system based on the GPS Beidou positioning and the MESH wireless ad hoc network disclosed by the invention, the emergency rescue field communication system has the following advantages:
the expandability principle system design fully considers the current situation and the requirement of service development in a longer period in the future, and leaves the possibility of full upgrade and expansion. The system reserves communication interfaces such as a photoelectric composite interface, an Ethernet port, a serial port and WIFI (wireless fidelity), and is convenient for accessing existing upper communication equipment (PTN, BBU, a wired switch, a 4G router, satellite communication equipment and the like) or lower communication equipment (a computer, a camera, a wireless handheld terminal and the like) which may need to be accessed in the future. On the other hand, there is still a sufficient room for expansion of the system scale.
The principle of the highest safety is that in the emergency process, code information such as team formation, instrument equipment, tactical action and the like can be related to data transmitted by the tactical ad hoc network system and belong to secret-related data, so that the established tactical ad hoc network system can carry out encryption transmission on the data to ensure the data safety. By adopting an advanced encryption mechanism, end-to-end secret video, secret voice and secret data communication services can be provided.
Compared with the system without power requirement and dependence on public communication network, the system has the advantages of no power requirement and no public communication network. With the rapid development of urbanization, China has the most super high-rise buildings and underground building spaces with the largest area all over the world, such as underground malls, underground parking lots, civil air defense projects, subways and the like, and a large number of large urban complexes, such as airports, high-speed railway stations, superstores, exhibition centers and the like. The common emergency rescue communication cannot meet the requirement of multi-angle video dynamic information of anti-terrorism and outburst sites; the upper communication issuing and feedback of each level of command instructions; the system can quickly establish an emergency communication network on site. The device is light and is equipped with a high capacity power supply to support long time operation. The network possesses very strong mobility, can hand, bear, each type vehicle delivery, unmanned aerial vehicle carries, GPS big dipper location by personnel.
The tactical ad hoc network is urgent in field condition, does not have time to make complicated setting-the network equipment has automatic setting ability, does not need the field configuration operation. When any node equipment is damaged, other nodes in the network can automatically reconstruct a new network, and after the damaged equipment is repaired or spare node equipment is replaced, the whole network can be immediately accessed again. And GPS locates and transmits live video in real time on a tactical map.
After a disaster or an accident occurs to the super high-rise building, rescue workers carry multi-hop ad hoc network node equipment to rush to the site. The portable bearing node equipment of the multi-hop ad hoc network is distributed along the fire ladder, one node equipment is arranged on the left and right of every 3-4 layers, after the equipment is started, adjacent node equipment can be independently searched, the equipment is rapidly interconnected to form a network, and the equipment and vehicle-mounted nodes on a field command vehicle form a complete multi-hop ad hoc network.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural diagram of the link module of the tactical ad hoc network of the present invention.
Further features of the invention will become apparent from the following description of exemplary embodiments with reference to fig. 1 and 2.
Detailed Description
The emergency rescue field communication system based on GPS beidou positioning and MESH wireless ad hoc network according to the present disclosure is described below with reference to the accompanying drawings, but it should be understood that the embodiments described below are merely exemplary and are not intended to limit the present disclosure to the following exemplary embodiments.
Under the current complex international and social environments, how to prevent and process public safety major emergencies becomes an important subject, and meanwhile, when the emergencies such as national safety, terrorist events, natural disasters, major traffic accidents and the like occur, how to rapidly, effectively, timely and orderly deploy defense to the site, implement various command schemes and instructions and reduce casualties and financial loss to the minimum is particularly important. However, the current communication network is not suitable for poor network environments, such as underground use, so that data communication is difficult to implement, the current working state and information of the mobile terminal are difficult to obtain, and corresponding fault causes cannot be obtained.
First, referring to fig. 1 and fig. 2, an emergency rescue scene communication system based on GPS beidou positioning and MESH wireless ad hoc network according to a first embodiment of the present disclosure is described, which includes a command center 100, an ad hoc network private network base station 200, an ad hoc network scene command vehicle 300, an unmanned aerial vehicle 400, an individual soldier 500, and a GPS beidou positioning satellite 600;
the ad hoc network special base station is communicated with the command center 100 through a radio and television optical fiber network, and the GPS Beidou positioning satellite 600 is in signal communication with the command center 100, the ad hoc network field command vehicle 300, the unmanned aerial vehicle 400 and the individual soldier 500;
the ad hoc network private network base station 200, the ad hoc network field command vehicle 300, the unmanned aerial vehicle 400 and the individual soldier 500 are communicated with each other by adopting a tactical ad hoc network link module 700.
According to one embodiment, the tactical ad hoc network link module 700 includes a MESH transmission base station 701 and a background management module 702, and the MESH transmission base station 701 adopts a photoelectric composite interface and is used for data access, data relay and data aggregation.
According to one embodiment, the MESH transmission base station 701 is provided with a WIFI access module 703 for accessing a mobile terminal.
According to an embodiment, the ad hoc network private network base station 200 is a 3G private network base station, and certainly, a 4G private network base station or a private network LTE base station may also be used.
According to one embodiment, the background management module 702 of the tactical ad hoc network link module 700 employs a Netpool management software module, which includes five functional parts of topology presentation, device management, system setup, SDK, and client software. The Netpool management software supports a batch configuration mode, can realize large-batch remote one-key configuration, saves manpower, accelerates the deployment speed and meets the requirements of emergency communication sites. The user can realize one-key configuration and restart for all or part of selected nodes by filling or selecting the preset configuration file on site. Especially when the device is used for the first time, the initialized BSSID and the key are recommended to be modified through the function, and information security during the use process of the device is guaranteed. The system will save the configuration file in an encrypted manner for the joining and interconnection of different batches of equipment. Netpool is designed and developed by adopting an MVC architecture, the bottom layer SDK packages bottom layer functions such as a communication protocol, data encryption, message queues and the like, secondary development interfaces such as identity authentication, data reading and writing and the like are provided through a standard interface of restful, and integration with a third-party system is facilitated. Client background software matched with Netpool management software is arranged in each tactical ad hoc network node and is responsible for collecting local data, returning the data, and receiving instructions of modifying parameters, restarting, upgrading and the like of a platform end.
The tactical ad hoc network system has the characteristics of dynamic, ad hoc, mesh connection and the like, the link selection between the nodes is completely and automatically realized by a bottom layer protocol, the adjustment of the link is carried out at any time along with the movement of the nodes and the change of the surrounding environment, the Netpool management software topological graph mode can intuitively display the real-time link quality and the routing direction between the nodes, and a command center can conveniently and reasonably deploy and adjust front-end personnel in time.
According to one embodiment, the mobile terminal is one or more of a laptop, a smartphone, and a PAD.
The utility model discloses well tactics ad hoc network system comprises MESH transmission basic station and backstage management system, and this system has solved the complicated situation that traditional communication system erect, can form emergency command system fast. Any MESH transmission base station adopts non-centralized MESH connection, has multi-hop redundancy backup links, can adapt to various complex terrains and environments, and is not restricted by a center and a relative area.
The utility model discloses a tactics ad hoc network link module includes MESH transmission basic station and backstage management module, and MESH transmission basic station adopts the compound interface of photoelectricity, can insert all kinds of IP equipment such as PTN, BBU, switch, router, computer, camera, has two layers of ethernet and passes the function thoroughly. Meanwhile, a WIFI access mode is provided, and the mobile terminal can be accessed to a notebook computer, a mobile phone, a PAD and other mobile terminals, so that data transmission and field management are facilitated. The MESH transmission base station has the functions of data access, data relay and data aggregation, data can be transmitted from the ad hoc network access node to the ad hoc network aggregation node in a wireless mode, and the ad hoc network relay node can be used for extending and widening a signal coverage range in a complex environment, is ready to use and has the characteristics of quickness and flexibility. The ad hoc network convergent node device can directly access audio and video information to a monitor or a large screen for real-time monitoring and dispatching command, can also access to an operator network through a satellite or a 4G network, and transmits the audio and video information to each province and city command center, each province and city command center can access video signals to the monitor or the large screen for real-time monitoring, meanwhile, dispatching software is used for video switching and browsing, and the existing storage device can be used for storing and reading, so that the real-time visible, audible and talkback functions are realized.
The system can be used for networking communication in the network-free environment in the special fields of emergency communication, rapid defense, field investigation, emergency rescue and disaster relief and the like. The customization system adopts an MIMO technology, has the capacity of bidirectional large-bandwidth symmetrical transmission, has the maximum point-to-point bandwidth of 80Mbps, and can accommodate the simultaneous transmission of multiple paths of information such as videos, audios, positions, radars and the like.
The system uses a special omnidirectional antenna in a matching way, and the stability of wireless broadband network connection under various working conditions is met. The product adopts an IP67 waterproof and dustproof structure, has super-strong maintenance-free characteristics, can be provided with a large-capacity storage battery pack, and is very suitable for emergencies and field use.
The system supports the centerless multi-hop mesh networking technology, equipment nodes are connected and communicated in a many-to-many mode, each node in a configurable mesh network has more than one wireless uplink link, and the availability of wireless transmission service is improved. The topological structure surpasses the traditional wireless point-to-point and point-to-multipoint topological structures, thereby fundamentally solving the influence of obstacles such as buildings and the like in large-scale wireless network deployment in an urban area.
In addition, the system has automatic configuration capability, when the network node is started, all modules in the node automatically discover each other and automatically determine respective working modes, intelligent scanning channels and other functions, and manual configuration of each device is not needed. When one or more newly added nodes in the network exist, the system can also automatically discover the new nodes, and the new nodes can be automatically configured after networking authorization is carried out on the nodes through the management interface. The automatic configuration and automatic discovery capability of the system is suitable for emergency handling and rapid deployment scene requirements.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims (5)

1. The emergency rescue field communication system based on GPS Beidou positioning and MESH wireless ad hoc network is characterized by comprising a command center, an ad hoc network private network base station, an ad hoc network field command vehicle, an unmanned aerial vehicle, an individual soldier and a GPS Beidou positioning satellite;
the special base station of the ad hoc network is communicated with a command center through a radio and television optical fiber network, and the GPS Beidou positioning satellite is communicated with the command center, the ad hoc network field command vehicle, the unmanned aerial vehicle and the individual soldier signal;
the ad hoc network private network base station, the ad hoc network field command vehicle, the unmanned aerial vehicle and the individual soldier are communicated with each other by adopting a tactical ad hoc network link module.
2. The emergency rescue field communication system based on GPS Beidou positioning and MESH wireless ad hoc network according to claim 1, characterized in that the tactical ad hoc network link module comprises an MESH transmission base station and a background management module, wherein the MESH transmission base station adopts a photoelectric composite interface and is used for data access, data relay and data aggregation.
3. The emergency rescue field communication system based on GPS Beidou positioning and MESH wireless ad hoc network according to claim 2, characterized in that the MESH transmission base station has a WIFI access module for accessing the mobile terminal.
4. The emergency rescue field communication system based on GPS Beidou positioning and MESH wireless ad hoc network according to claim 1, wherein the ad hoc network private network base station adopts a 3G private network base station, or a 4G private network base station or a private network LTE base station.
5. An emergency rescue field communication system based on GPS Beidou positioning and MESH wireless ad hoc network according to claim 3, characterized in that the mobile terminal is one or more of a notebook computer, a smart phone and a PAD.
CN202020110151.3U 2020-01-18 2020-01-18 Emergency rescue field communication system based on GPS Beidou positioning and MESH wireless ad hoc network Active CN211670989U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020110151.3U CN211670989U (en) 2020-01-18 2020-01-18 Emergency rescue field communication system based on GPS Beidou positioning and MESH wireless ad hoc network

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020110151.3U CN211670989U (en) 2020-01-18 2020-01-18 Emergency rescue field communication system based on GPS Beidou positioning and MESH wireless ad hoc network

Publications (1)

Publication Number Publication Date
CN211670989U true CN211670989U (en) 2020-10-13

Family

ID=72738226

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202020110151.3U Active CN211670989U (en) 2020-01-18 2020-01-18 Emergency rescue field communication system based on GPS Beidou positioning and MESH wireless ad hoc network

Country Status (1)

Country Link
CN (1) CN211670989U (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112600612A (en) * 2020-12-10 2021-04-02 浙江水木物联技术有限公司 Remote command communication device and communication method based on satellite transmission
CN112616195A (en) * 2020-12-02 2021-04-06 无锡三通科技有限公司 Emergency all-media communication system based on wireless ad hoc network technology and implementation method thereof
CN112738739A (en) * 2020-11-06 2021-04-30 岭澳核电有限公司 Nuclear power plant fire scene emergency communication system
CN112969170A (en) * 2021-02-02 2021-06-15 上海航天电子有限公司 Air-space-ground integrated emergency communication and command scheduling system
CN113098581A (en) * 2021-03-22 2021-07-09 南京熊猫电子股份有限公司 Communication method of vehicle-mounted satellite communication terminal and vehicle-mounted satellite communication terminal system
CN113115323A (en) * 2021-04-15 2021-07-13 西北工业大学深圳研究院 Distributed multi-hop ad hoc network secure communication method and device based on unmanned aerial vehicle transmission
CN113905388A (en) * 2021-10-11 2022-01-07 上海电信科技发展有限公司 Fire-fighting 5G emergency private network dynamic coverage system based on emergency communication backpack
CN113973402A (en) * 2021-11-01 2022-01-25 国网河北省电力有限公司建设公司 Multi-system converged communication method
CN114374961A (en) * 2022-01-06 2022-04-19 拜俊鹏 Civil aviation emergency communication wireless ad hoc network system
CN114422942A (en) * 2022-01-26 2022-04-29 哈尔滨工业大学 Mobile emergency communication system based on wireless ad hoc network technology
CN116233856A (en) * 2023-05-05 2023-06-06 国网信息通信产业集团有限公司 MESH ad hoc network communication device and method based on emergency communication system
CN116828437A (en) * 2023-06-26 2023-09-29 上海市东方医院(同济大学附属东方医院) Satellite-ground disaster aggregation emergency medical rescue communication system
CN116981114A (en) * 2023-06-16 2023-10-31 三峡高科信息技术有限责任公司 Search and rescue system based on ad hoc network technology
CN117499906A (en) * 2023-12-29 2024-02-02 四川安信科创科技有限公司 Emergency tactical wireless communication system in mountain gorge valley zone and design method thereof

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112738739A (en) * 2020-11-06 2021-04-30 岭澳核电有限公司 Nuclear power plant fire scene emergency communication system
CN112616195A (en) * 2020-12-02 2021-04-06 无锡三通科技有限公司 Emergency all-media communication system based on wireless ad hoc network technology and implementation method thereof
CN112600612A (en) * 2020-12-10 2021-04-02 浙江水木物联技术有限公司 Remote command communication device and communication method based on satellite transmission
CN112969170A (en) * 2021-02-02 2021-06-15 上海航天电子有限公司 Air-space-ground integrated emergency communication and command scheduling system
CN113098581B (en) * 2021-03-22 2023-09-22 南京熊猫电子股份有限公司 Communication method of vehicle-mounted satellite communication terminal and vehicle-mounted satellite communication terminal system
CN113098581A (en) * 2021-03-22 2021-07-09 南京熊猫电子股份有限公司 Communication method of vehicle-mounted satellite communication terminal and vehicle-mounted satellite communication terminal system
CN113115323A (en) * 2021-04-15 2021-07-13 西北工业大学深圳研究院 Distributed multi-hop ad hoc network secure communication method and device based on unmanned aerial vehicle transmission
CN113905388B (en) * 2021-10-11 2023-11-03 上海电信科技发展有限公司 Fire control 5G emergent private network dynamic coverage system based on emergent communication knapsack
CN113905388A (en) * 2021-10-11 2022-01-07 上海电信科技发展有限公司 Fire-fighting 5G emergency private network dynamic coverage system based on emergency communication backpack
CN113973402A (en) * 2021-11-01 2022-01-25 国网河北省电力有限公司建设公司 Multi-system converged communication method
CN114374961A (en) * 2022-01-06 2022-04-19 拜俊鹏 Civil aviation emergency communication wireless ad hoc network system
CN114422942A (en) * 2022-01-26 2022-04-29 哈尔滨工业大学 Mobile emergency communication system based on wireless ad hoc network technology
CN114422942B (en) * 2022-01-26 2024-04-09 哈尔滨工业大学 Mobile emergency communication system based on wireless ad hoc network technology
CN116233856A (en) * 2023-05-05 2023-06-06 国网信息通信产业集团有限公司 MESH ad hoc network communication device and method based on emergency communication system
CN116233856B (en) * 2023-05-05 2023-10-27 国网信息通信产业集团有限公司 MESH ad hoc network communication device and method based on emergency communication system
CN116981114A (en) * 2023-06-16 2023-10-31 三峡高科信息技术有限责任公司 Search and rescue system based on ad hoc network technology
CN116981114B (en) * 2023-06-16 2024-02-13 三峡高科信息技术有限责任公司 Search and rescue system based on ad hoc network technology
CN116828437A (en) * 2023-06-26 2023-09-29 上海市东方医院(同济大学附属东方医院) Satellite-ground disaster aggregation emergency medical rescue communication system
CN117499906A (en) * 2023-12-29 2024-02-02 四川安信科创科技有限公司 Emergency tactical wireless communication system in mountain gorge valley zone and design method thereof
CN117499906B (en) * 2023-12-29 2024-04-16 四川安信科创科技有限公司 Emergency tactical wireless communication system in mountain gorge valley zone and design method thereof

Similar Documents

Publication Publication Date Title
CN211670989U (en) Emergency rescue field communication system based on GPS Beidou positioning and MESH wireless ad hoc network
CN102006574B (en) Wireless self-organized network-based integrated heterogeneous emergency communication network
CN102075893B (en) Emergency communication system based on wireless cellular network and Ad-hoc network
Rawat et al. Towards efficient disaster management: 5G and Device to Device communication
CN114301784A (en) Network shooting range training environment construction method and device, electronic equipment and storage medium
Alnoman et al. On D2D communications for public safety applications
CN210381309U (en) Emergency mobile communication system in closed space
CN101909270A (en) Wireless communication command system for emergency rescue scene
CN114422942B (en) Mobile emergency communication system based on wireless ad hoc network technology
CN206977713U (en) A kind of marine emergent radio communication system based on wireless self-networking
CN113163517B (en) Multi-mode fusion emergency communication equipment for complex environment
CN106412982A (en) Monitoring system and method of vehicle-mounted mobile base station
Molla et al. SDR-based reliable and resilient wireless network for disaster rescue operations
Inoue et al. NerveNet architecture and its pilot test in Shirahama for resilient social infrastructure
CN207283533U (en) A kind of fusion command system based on power emergency trunking communicating technology
Ashraf et al. WiMesh: leveraging mesh networking for disaster communication in resource-constrained settings
CN108449807A (en) A kind of handheld terminal communication equipment
CN205901741U (en) Communication system
Pätzold 5G is going live in country after country [Mobile Radio]
Wetterwald et al. SDN for public safety networks
CN209949302U (en) Three-dimensional video return system based on wireless ad hoc network
Andersson et al. Disaster-resilient mobile network architecture
CN207766252U (en) A kind of double-frequency wireless ad hoc network transmission device
CN206041995U (en) Novel base station
CN112825577A (en) Outdoor emergency communication command device

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant