CAJ | 학술논문

水下环境的限制，使得水声传感网络具有一些特别的特点。针对已存在的水声通信网络的 MAC 协议的不足，如信道利用率低、时间槽等待空闲时间、时间同步的头部等问题，提出了一种新型的基于载波侦听多路访问/无碰撞的 MAC 协议———CSMA/CF （ Carrier Sense Multiple Access/Collision Free ）。该协议通过对网络中的所有节点进行排序，从而使网络中的节点在发送数据帧时具有相同的方向，从而避免冲突。也就是说，按顺序的上一个节点发送完数据之后，该节点立即发送数据，而不必等待一个最大的传输延迟。仿真结果显示，该协议在水声环境中具有较好的网络性能。
수하배경적한제，사득수성전감망락구유일사특별적특점。침대이존재적수성통신망락적 MAC 협의적불족，여신도이용솔저、시간조등대공한시간、시간동보적두부등문제，제출료일충신형적기우재파정은다로방문/무팽당적 MAC 협의———CSMA/CF （ Carrier Sense Multiple Access/Collision Free ）。해협의통과대망락중적소유절점진행배서，종이사망락중적절점재발송수거정시구유상동적방향，종이피면충돌。야취시설，안순서적상일개절점발송완수거지후，해절점립즉발송수거，이불필등대일개최대적전수연지。방진결과현시，해협의재수성배경중구유교호적망락성능。
Due to limitation of the underwater environment, the underwater acoustic sensor networks(UWASN) has some unique features. Regarding the deficiency of the existing MAC protocol for UWASN, low utilization of channel, the time slot idle time waiting, head of time synchronization and other issues, a MAC protocol of UWASN based on Carrier Sense Multiple Access/Collision Free is raised in this paper. By sorting all station in the network, the station transmits data with the same direction to avoid collision. In other words, after sending data by a sequence of nodes, the nodes send data immediately, instead of waiting for the longest transmission delay. The simulation results show that the protocol in UWASN has better network performance.