今年以来新三板累计发行股票超170亿元
百度 然而，越来越多的事实证明，不断累加家庭作业与题海战术，并不能有效提高学习效率，这不是一条可取的正确路径。LTE-M Broadband Trunking Network Helps Smart Urban Rail Construction.
LTE-M Broadband Trunking Network Helps Smart Urban Rail Construction.
Urban Rail eLTE Private Network Solution
The urban rail industry requires train-to-ground wireless networks to carry services such as train control, train dispatching, PIS/CCTV and trackside IoT etc. The traditional urban rail communication systems require : 2 RATs (Wi-Fi and Tetra) and 4 networks (Three Wi-Fi networks are used to carry CBTC, PIS, and video surveillance services, and one Tetra network is used to carry dispatching).
Traditional solutions face many challenges: CBTC control signal over Wi-Fi are easily interfered and are not stable in high-speed scenarios. The traditional TETRA solution supports only voice services and cannot meet the requirements of video services. The network is complex and difficult to maintain.
LTE-M (Metro) is a 4G TDD LTE-based wireless train-to-ground communication solution for urban rail transportation. It ensures continuous, reliable, secure, and uninterrupted urban rail communication and carries multiple services such as CBTC, trunking dispatch, PIS, and CCTV. Simplified networking reduces maintenance difficulties. Simplified networking reduces maintenance difficulties. Dedicated frequencies and multi-level QoS mechanisms are used to ensure system security and reliability, and stable operation of key CBTC services.
Benefits
One network carries multiple services
Stable and reliable, 99.999% availability
High-speed movement up to 200 km/h
Powerful QoS capability to ensure CBTC
Products
DBS5900 Distributed Base Stations
The DBS5900 is a wireless access device for the eLTE wireless broadband private network solution. It provides wireless access functions, including air interface management, access control, mobility control, and user resource allocation. The DBS5900 can meet the needs of industry users for wireless broadband access and multimedia critical communication, and obtain better coverage and user experience. The DBS5900 adopts a modular structure, with the baseband unit BBU and remote radio unit RRU deployed separately. The DBS5900 has the characteristics of small size, low power consumption, flexible installation, and rapid deployment.
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EV751 Vehicle Radio
EV751 is an integrated vehicle-mounted station for broadband trunking services on enterprise networks. It has a 5-inch semi-transparent semi-reflective TFT screen and supports P2P calls, group calls, DMO, SMS, MMS, broadband data access, smart Apps, interconnection with vehicle-mounted cameras, and multi-service concurrency.
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EP821 Broadband Trunking Handset
EP821 is a high-end broadband trunking hand-held terminal with a large screen, that provides powerful functions including private calls, group calls, SMS and MMS, broadband data access through LTE enterprise net and public net, video dispatching services, and concurrent transmission of multiple services. The EP821 provides a high-luminance 5-inch touchscreen and runs the Android Operating System (OS). The EP821 can be widely used in many industries that have no special requirements, to provide professional trunking dispatch, multimedia dispatch, and broadband data transmission functions.
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UEN(Unified Enterprise Node)
The Huawei UEN solution delivers carrier-class 5G high-reliability private networks by integrating complete 5G core network functions, such as the AMF, SMF, UPF, UDM, PCF and AUSF. It is predominately used for enterprise private network markets, covering electric power, transportation, campuses, and manufacturing, offering customers a superior 5G experience.
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