lte-d2d wireless private network system
A LTE-D2D, 1.LTE-D2D technology, applied in the field of distributed power distribution automation, can solve problems such as low-latency communication requirements for protection services, wireless private network applications, etc., to improve communication reliability and improve Spectrum efficiency, effect of bit error rate reduction
Active Publication Date: 2021-12-28
SOUTH CHINA UNIV OF TECH +1
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Problems solved by technology
In the actual application of the power grid, this technology does not meet the low-latency communication requirements of protection services
Therefore, existing domestic projects seldom apply wireless private networks to distribution network protection services, and can only realize data collection services
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[0029] The specific implementation of the present invention will be further described below in conjunction with accompanying drawings and examples, but the implementation and protection of the present invention are not limited thereto. Technically understood or implemented.
[0030] The LTE-D2D wireless private network system in this embodiment adopts a "centralized + decentralized" hybrid structure, which consists of four parts: MME / S-GW host, eNode B base station, UE terminal and intelligent terminal. Set up a mobility management entity / serving gateway (MME / S-GW) host in a substation above 110kV, and the physical device is a switch or server as an upper-layer monitoring system. The base station is installed in the power supply bureau's own property as far as possible, so that the signal can effectively cover all distribution network nodes where smart terminals are installed. The user equipment (UE) terminal is set at the installation site of the smart terminal, the antenna ...
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The invention discloses a system architecture of an LTE-D2D wireless private network, which is suitable for a distributed power distribution automation system. The system architecture includes MME / S-GW host, eNode B base station, UE terminal and intelligent terminal; the intelligent terminal is installed in the ring network cabinet and the public power room, and the corresponding physical equipment is an industrial switch; the intelligent terminal is connected to the UE terminal through optical fiber, and the UE The terminal is connected to the eNode B base station through the LTE-D2D wireless network, and the eNode B base station is connected to the MME / S-GW through optical fiber. The wireless resource management and scheduling function of the present invention is realized by the serving base station, and the core network does not perform this function any more; the technology for reducing communication time delay is applied, and the average time delay and the maximum time delay of services are reduced. The system architecture of the LTE-D2D wireless private network makes the data flow not need to pass through the core network, avoids the routing addressing between base stations, and reduces the end-to-end communication delay.
Description
technical field [0001] The invention relates to the technical field of distributed power distribution automation, in particular to a system of LTE-D2D wireless private network applied to the distributed power distribution automation system. Background technique [0002] With the continuous expansion of the distribution network scale and the large number of distributed power sources, the distributed distribution automation system has become the development trend of the distribution network. Among them, distribution network communication is an important technical means to realize the protection and control functions of distribution network. At present, because the urban cable network can be laid in the cable trench together with the optical fiber network, the urban distribution network generally uses high-reliability optical fiber communication. In suburban and rural areas, overhead networks are commonly used, with long distribution lines and a small number of branch and segm...
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IPC IPC(8): H04L12/24H04W16/18H04W76/27H04B17/309H04B17/382
CPCH04B17/309H04B17/382H04L41/0654H04L41/0659H04L41/0876H04W16/18H04W76/27Y02D30/70
Inventor 管霖陈恒安林凌雪陈建钿舒放曹健杨锐雄侯祖锋
Owner SOUTH CHINA UNIV OF TECH