Lead code distribution method of machine-type communication random access process

The present invention discloses a lead code distribution method of a machine-type communication random access process. The method comprises the steps of: S1: establishing a lead code distribution mechanism and an urn model; S2: defining probabilities of access leisure and/or access success and/or access conflict; S3: solving an optimal lead code number as shown in the description, and according tothe optimal lead code number as shown in the description to perform lead code distribution. Through combination of the urn model and a game theory, the maximum access success probability is taken asa target so as to research the optimal lead code distribution policy when the H2H and the MTC are accessed in the mixed mode and the number of the terminals are given. 本发明公开了种机器类通信随机接入过程的前导码分配方法，它包括：S1：建立前导码分配机制与瓮模型；S2：根据模型定义接入空闲和/或接入成功和/或接入冲突的概率；S3：求取最优前导码数量根据最优前导码数量进行前导码分配。本发明结合瓮模型和博弈论，以最大接入成功概率为目标，研究了H2H与MTC混合接入且终端数量给定时的最优前导码分配策略。