一种用于分组无线网的TDMA方案

TDMA Scheme for Packet Radio Network

在无线分组网中,基于竞争机制的信道多址方法常由于分组冲突而限制网络性能,不能满足战术信息传输的实时可靠性要求。该文提出了采用TDMA机制构建无中心网络的应用方案,按时隙分配信道资源,避免分组竞争,保证各节点数据信息在其专有时隙及时、可靠地发送,并通过预留时隙适应节点变化和突发通信的需求。采用GPS同步及DSP通信协议板完成了系统的具体实现,能更好地适应战术无线分组网的传输特点和应用需求。

In the packet radio network, MAC protocols based on competition may often limit the network performance because of packets collision, which can not fit for the tactical transmission demand especially. This paper presents an application scheme of wireless network based on TDMA, which distributes the wireless channel depends on time slots and ensures the packets to be transmitted timely and reliably in its own channel. The scheme can also handle the status of nodes increase and abrupt transmission by remaining time slots. An actual TDMA wireless network is established using GPS synchronization and DSP protocol board, which can meet the requirement of tactical transmission more compatibly.