Abstract: A channel assignment strategy for voice/data cellular mobile communication system is proposed. The strategy provides guard channel for data call to reduce blocking probability of data call. Meanwhile, voice call queuing strategy is adopted to restrain voice call blockage deterioration caused by guard channel strategy. To further improve the system performance, impatient customers are introduced. And a queue system with impatient customers is given. The simulation results show that the proposed strategy can lower blocking probabilities of voice and data call and improve system performance.

Key words: channel assignment, guard channel, queuing strategy, impatient customer, blocking probability

摘要： 提出了一种适用于语音、数据呼叫的蜂窝移动通信系统的信道分配策略。该策略为数据呼叫提供保护信道，降低数据呼叫的阻塞率。同时，采取语音呼叫排队策略抑制数据保护信道引起的语音呼叫阻塞率的恶化。为了进一步提高系统的性能，在策略中引入了不耐烦顾客，并建立了带有不耐烦顾客的排队模型。仿真结果表明该策略能够有效地降低语音呼叫和数据呼叫阻塞率，改善系统性能。

关键词: 信道分配, 保护信道, 排队策略, 不耐烦顾客, 阻塞率