Abstract
Random access is an important technology of media access control in mobile communication system. Based on the analysis of the advantages and disadvantages of the traditional random access preamble code management scheme, this paper proposes a preamble code management scheme based on code-word sharing, and uses Matlab simulation to compare the performance of the proposed scheme with that of the traditional one. The results show that: The scheme can effectively improve access success rate and reduce collision probability while reducing system resources.