The Application Of Concurrent Processing Technology In Multi-lane Free Flow System

Now, Multi-Lane Free Flow (MLFF) is one of the world's most advanced technology in road and bridge pricing, in the world. It's well known for not having any roadblocks. In some developed countries, it's already quite mature, but still out of phase in our country.The technology of concurrent processing plays a quite important role in MLFF. In the Radio Frequency Identification system (RFID), if there are many electronic tags in the processing region of the reader, the respond information of the electronic tags will be interferenced, resulting tags can't be identified timely. The ultimate goal of the concurrent processing technology is to identify the number of the electronic tags as many as possible, so the effective anti-collision algorithm is the key to realizing this technology.The main task of this paper is to study the anti-collision algorithm about concurrent processing technology, find an entry point, and propose improved algorithm. In this paper, a detailed analysis about the commonly used anti-collision algorithms has been made in this paper, including Aloha algorithm and Binary algorithm, both of them are based on TDMA. There are many derivatives of them, for example, the derivatives of Aloha algorithm including slotted Aloha, framed slotted Aloha and dynamic framed slotted Aloha algorithm, and the derivatives of Binary algorithm including Binary tree algorithm and return type Binary algorithm. Based on these algorithms, this paper proposed an improved algorithm and introduced it in performance. Finally, this paper carried out MATLAB simulation, and the results show that the improved algorithm has obvious advantages.