Configuration method of special subframes of TD-LTE electric wireless private network

Abstract

The invention discloses a configuration method of special subframes of a TD-LTE electric wireless private network. The configuration method comprises the following steps that 1, the required GP length TGP is met according to the covering radius of a cell and far-end interference configurations; 2, the symbolic number R occupied by a control signal in a UpPTS time slot is determined according to the situation that PRACH or user number is used or not; 3, the total symbolic number in each special subframe is set as Q, the vale of Gibson = Q-TGP-R-3 is calculated, and if the Gibson is smaller than half of the subframe length, the residual symbolic number is configured to the DwPTS time slot length; if Gibson is larger than or equal to half of the subframe length, a special subframe time slot configuration scheme is designed as follows: (1) a DwPTS time slot occupy 3 OFDM symbols; (2) the length of a guard interval GP is TGP; (3) the residual symbolic number is configured to the UpPTS time slot length. The utilization rate of network bandwidth and the stability of the network are improved.

Description

technical field [0001] The invention relates to a method for configuring a special subframe of a TD-LTE power wireless private network. Background technique [0002] Smart power consumption is directly oriented to society and users. As the importance of power grid information data becomes increasingly prominent, the acquisition of massive user power consumption, power distribution and grid monitoring data as an important support for smart power consumption is also facing more and more challenges. . The new generation of smart grid technology based on wireless broadband communication technology can not only solve the problems of high cost and difficult wiring of traditional optical fibers, but also meet the bandwidth and delay requirements of some important data transmissions. It is gradually becoming the focus of research and demonstration construction . Time Division Long Term Evolution (TD-LTE) is currently the mainstream wireless broadband technology, with the advantage...

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Problems solved by technology

Referring to the throughput calculation method in "YD / T 5213-2015 Interim Provisions on Engineering Design of Digital Cellular Mobile Communication Network TD-LTE Wireless Network", in the 20MHz system bandwidth, subframe configuration 0, special subframe configuration 7, the average uplink and downlink The throughputs are 8.16Mbps and 12.53Mbps respectively, and the uplink throughput is still lower than that of the downlink. This does not match the characteristics of the data flow of the business, and it is easy to cause simultaneous congestion of uplink and downlink services when the uplink traffic on the private network reaches its peak value, wasting downlink network resources. , increasing the transmission delay of power services and affecting the reliable operation of the power system

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