英语翻译With ACK,the transmitter does not send redundant packets for theinformation that is already successfully decoded.Hence,theamount of traffic in the system is reduced and the probabilityof collision is smaller at the cost of added complexit
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英语翻译With ACK,the transmitter does not send redundant packets for theinformation that is already successfully decoded.Hence,theamount of traffic in the system is reduced and the probabilityof collision is smaller at the cost of added complexit
英语翻译
With ACK,
the transmitter does not send redundant packets for the
information that is already successfully decoded.Hence,the
amount of traffic in the system is reduced and the probability
of collision is smaller at the cost of added complexity
and additional bandwidth to transmit the “ACK”.Another
class of random access based MAC protocols uses carrier
sensing.Basically,a user that wishes to transmit senses
the channel before it attempts to send.Camer sensing
reduces the collisions by avoiding collisions with ongoing
transmissions.The medium access control sub-layer of the
wireless LAN 802.11 standards uses CSMNCA (CarrierSensing Multiple Access/Collision Avoidance).In case of
collision,each transmitter will back off for a random period
of time before its next attempt.In particular,we consider
an exponential back-off algorithm [lo].
In this paper,we study the performance of a networked
control system with a wireless network adopting one of the
MAC protocols discussed above.Given a MAC protocol,
we can find the probability distribution of time delay and
packet losses as a function of p,the probability of success
on each transmission,and the number of time slots in a
sample period.The performance of different MAC protocols
are compared in terms of the control performance index we
choose.
麻烦不要翻译软件翻的
英语翻译With ACK,the transmitter does not send redundant packets for theinformation that is already successfully decoded.Hence,theamount of traffic in the system is reduced and the probabilityof collision is smaller at the cost of added complexit
与ack ,
变送器不发出多余的数据包为
资料是已经成功破译.因此,
交通量在系统中,是减少和概率
对撞机是在规模较小的成本,增加了复杂性
和额外的带宽,以传送" ack " .另一
类随机存取基于MAC协议采用载波
传感.基本上,当用户希望转交感官
该频道前,它企图发送.camer传感
降低了碰撞,避免碰撞与正在进行
传送的安全性.介质访问控制子层的
无线局域网802.11标准用途csmnca ( carriersensing多址接入/避免碰撞) .在案件
碰撞,每一个发射机将退缩为一个随机期
时间,然后在下一次尝试.尤其是,我们考虑
指数后退算法[卢] .
在这篇文章里,我们学习的表现联网
控制系统与一个无线网络,采用其中的
MAC协议在上文讨论过.由于MAC协议,
我们可以找到的概率分布,时间延迟和
包损失,因为一个函数的P ,,是成功的几率
对每个传输,以及有多少个时段,在一个
取样期.表现不同的MAC协议
比较而言,控制性能指标,我们
选择.
用ACK,发射机已经成功译解的信息寄送冗余小包.因此,系统
的交易的总量被减少的以外加的复杂和附加带宽的代价和冲突的可
能性是更小传送“ACK”.另一堂基于随机存取的麦克礼仪
的课使用承运者起感官作用.基本上,在它尝试送信之前,一个希望
播送信号的用户感觉到渠道.Camer起感官作用通过避开和进行中的
传送撞击减少冲突.中等的接近的机会控制手段亚层无线局域网...
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用ACK,发射机已经成功译解的信息寄送冗余小包.因此,系统
的交易的总量被减少的以外加的复杂和附加带宽的代价和冲突的可
能性是更小传送“ACK”.另一堂基于随机存取的麦克礼仪
的课使用承运者起感官作用.基本上,在它尝试送信之前,一个希望
播送信号的用户感觉到渠道.Camer起感官作用通过避开和进行中的
传送撞击减少冲突.中等的接近的机会控制手段亚层无线局域网
802.11标准使用CSMNCA((CarrierSensing多重接近的机会//冲突避
开).如果冲突的,每一发射机将离开在它的下一个尝试以前后退在
一时间的随便时期中.特别是,我们[看哪]考虑一离开算法指数的后
面-.在这纸中,我们随着一无线网络学习一联网的控制手段系统的
表现采用前面讨论的麦克礼仪之一.由于一麦克礼仪,我们能找出是
一个p的功能,有关每一传送成功的可能性和在一样品时期中广播时
隙的数目时间耽搁和小包丢失的概率分布.不同麦克礼仪的表现被
按照我们选择的控制手段表现索引比较.
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