But the physics layer of some small hand-hold equipments can not provide carriersense.
但在一些以小型手持设备为终端的自组网应用系统中物理层无法提供载波感知。
2
First of all, Ethernet stations check to see if the ether is idle (carriersense) and wait if they sense a signal.
首先是“载波感测”。以太网站先检查“以太”是否空载,如果检测到信号了就排队等候自己的发送机会。
3
The media access control (MAC) protocol of mobile Ad Hoc networks (MANETs) is closely-related with its physics layer, most MAC protocols request the capability of carriersense in physical layer.