关键词: 无线多媒体网络, 上行混合重传, 资源分配, 峰值速率, 目标函数, 迭代机制, Lyapunov漂移

Abstract: Due to the dynamic properties of transmission channels and transmission queue tasks, it is difficult to achieve high-level stable output of network uplink hybrid retransmission transmission rate using a fixed resource allocation scheme is challenging. Therefore, research on wireless multimedia network uplink hybrid retransmission resource allocation algorithm has been carried out. Combining Shannon’s formula to calculate the peak rate of network enhanced mobile bandwidth for uplink hybrid retransmission, using binary variables to determine the expected channel resource allocation at the peak rate, and constructing a network uplink hybrid retransmission resource allocation objective function with transmission rate as a parameter, so that the objective function includes channel dynamic properties; when solving the objective function, an iterative mechanism is introduced to use the resource allocation parameters that constrain Lyapunov drift as the allocation result of the current task in the transmission queue, and update the allocation scheme recursively based on the transmission queue task. The test results demonstrate that the application design algorithm achieves high fairness in allocating network uplink hybrid retransmission resources, and the transmission rate remains stable at a high level while delivering high throughput.

Key words: wireless multimedia network, upstream mixed retransmission, resource allocation, peak rate, objective function, iterative mechanism, Lyapunov drift