MAC addresses, collision detection, exponential backoff and similar low level protocols that mediate access to the physical layer are part of the Data Link Layer.

MAC 地址、冲突检测、指数调解对物理层访问类似低级议是数据链路层一部分。

Considering the backoff algorithm of S-MAC protocol cannot resolve the fairness problem for nodes communication, the BDQR (Backoff Depends on Queue and Retry) backoff algorithm was presented in this paper.

鉴于S-MAC议算法无法解决节点通信中公平性问题，本文提出了BDQR（基于队列重）算法。

Number one category is of the people who see  you in the misery in pain and the backoff, they're like we are gone. We can't handle  it. I respect them for their honesty.

第一类是那些在痛苦缩中看到你人，他们就像我们走了一样。 我们无法处理。 我尊重他们诚实。