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Description: p-持续CSMA协议下，一个用户在发送之前，先侦听信道，若是空闲，就以概率p发送出去，而以q =1-p的概率推迟到下一帧时。如果下一帧时仍是空闲，便再次以概率p发送而以q推迟到再下一帧时。直到发送成功或另外一用户开始发送时为止。若一开始就侦听到信道忙，它就等到下一帧时，然后再开始上述过程。若发生冲突，这等待一随机时间后重新开始。本实验中取q值为0.5。求的是0.5-持续CSMA。
-p-persistent CSMA agreement, a user before sending the first interception channel, if idle, with probability p sent, and to q = 1-p probability postponed to the next frames. If the next frame was still idle, they again sent with probability p and q to further postponed to the next frames. Until this a success or other users at the beginning of this date. If an interception at the start of the busy channel, it will wait till the next frames, and then begin the process. If conflict breaks out, waiting for a random period of time after the re-start. The experiments take q value of 0.5. For the 0.5-sustained CSMA.
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Size: 55296 |
Author: fang |
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Description: 1-持续CSMA协议下，当一个用户要发送数据时，它首先侦听信道，看是否有其他站点在传送。如果信道忙，就持续等待直到信道空闲时，便将数据送出。若发生冲突，就等待一个随机长的时间，然后重新侦听。
对于这种协议，先考虑当前帧i时的前一帧时i-1，得到前一帧时的最后一帧frame0（相对时间最大的帧）的相对时间dt0，然后再在当前帧时查看有哪些帧的相对时间会小于dt0，这些帧若是发送就会与frame0发生冲突，所以这些帧就进入持续等待状态，这些帧并没有发送。再考虑当前帧余下的帧（dt > dt0），它们中的第一帧侦听到信道处于空闲状态，所以就发送，而其他的帧由于第一帧的发送又处于等待状态。若有大于或等于2个帧的相对时间相等，且它们又同时侦听到信道空闲时，就会同时发送而导致冲突，冲突发生后的处理方法同上两个协议的一样。
-1- CSMA continued under the agreement, when a user to send data, it first interception Channel to see if there are other sites in transmission. If Channel busy, continuing to wait until the idle channel, and put more information out. If there is conflict, it is a long wait for a random time, then re-interception. Such agreements, to consider the current frame i am one of the former when i-1, be a time before the final one frame0 (relative to the time frame) the relative dt0 time, and then when the current frame to detect what the relative time frame will be less than dt0, these frames will be sent if and frame0 conflict, these frames would enter the state continued to wait, they do not send frames. Consider the current frame remaining frames (dt gt; Dt0), the interception of the first fra
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Size: 48128 |
Author: fang |
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Description: 非持续CSMA
该协议下，用户在发送帧之前，会先侦听信道的状况，如果没有其他站点发送，它就发送。若信道忙，它就等待一个随机的时间后重复以上动作。
对于某一帧而言，信道是否忙，即是看其绝对时间（FRAMETIME*i+dt）的前一帧时内（FRAMETIME*(i-1)+dt ~ FRAMETIME*i+dt）是否存在发送帧。若无则发送，有则等待一随机时间。
-unsustainable under the agreement, users send frames, will first interception Channel situation, if no other site sent, it sent. If Channel busy, it would wait for a random time to repeat the action. For a frame, whether the busy channel, that is, look at his absolute time (FRAMETIME* i dt) of a time (FRAMETIME* (i-1) dt ~ FRAMETIME dt* i) the existence of this frame. If not then this, then wait for a random time.
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Size: 49152 |
Author: fang |
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Description: 是个印度人编写的CSMA/CD模拟程序~图形界面~-is prepared by the Indian CSMA/CD simulation program GUI ~ ~
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Size: 6144 |
Author: huyien |
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Description: 在网络仿真模拟工具下实现的MAC层最基本的CSMA协议-In the network simulation tool for the MAC layer to achieve the most basic CSMA protocol
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Size: 4096 |
Author: kaigo |
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Description: CSMA/SD载波帧冲突检测模拟仿真，采用的是C#-CSMA/SD carrier frame conflict detection simulation, using the C#
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Size: 368640 |
Author: wyz |
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Description: CSMA的.cc代码。CSMA是为了实现竞争信道时使用的。-CSMA
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Size: 2048 |
Author: jh |
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Description: CSMA/CD仿真代码，千兆以太网以前版本中统一采用的争用方法，以此来决定对媒体访问权，里面涉及到了退避算法等。可在opnet环境下实现，经验证通过。-CSMA/CD simulation code, Gigabit Ethernet previous versions used to compete for a unified approach, in order to decide on the right of media access, which relates to the backoff algorithm. OPNET environment can be achieved through the experience card.
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Size: 121856 |
Author: cquptliuhui |
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Description: 模拟CSMA的算法，对理解网络中的冲突检测有很大的帮助-Simulation of CSMA algorithms, understanding of the conflict detection network has a great help
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Size: 56320 |
Author: zxg |
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Description: csma模型的仿真，可以参考 slotted CSMA simulation-CSMA model simulation, can refer to slotted CSMA simulation
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Size: 1024 |
Author: 吴迎笑 |
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Description: csma-ca 算法的源代码，欢迎大家一起探讨-csma-ca algorithm source code, welcome you to explore
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Size: 34816 |
Author: 徐维涛 |
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Description: 该代码是CSMA/CA，用于无线环境下的MAC层的媒体共享.是一种DCF模式，-this is CSMA/CA,used to media access at the level of MAC in the wireless environment ,which is a model of DCF.
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Size: 5120 |
Author: xiongdy |
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Description: mac-csma for ns2 (c, h file)
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Size: 4096 |
Author: hee suk |
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Description: CC1110无线收发CSMA的源程序。使用的开发环境是IAR7.2H-CC1110 wireless transceiver of the source CSMA. The use of development environment are IAR7.2H
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Size: 208896 |
Author: xulingfei |
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Description: 一种无线传感器网络CSMA协议的设计与实现-csma
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Size: 280576 |
Author: 乔福 |
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Description: code simulation csma/cd
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Size: 2048 |
Author: papi |
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Description: 基于cc1110的csma算法,iar开发环境-cc1110 csma
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Size: 588800 |
Author: tangyue |
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Description: CC1110-CSMA通信程序。在IAR Embedded Workbench 下测试通过，如需在其他环境下使用，可直接编辑目录下的C文件。-CC1110-CSMA Communication Program. IAR Embedded Workbench in the test is passed, for use in other circumstances, direct editing of the C directory file.
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Size: 334848 |
Author: 王工 |
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Description: 基于OPNET单信道CSMA协议仿真 主要描述了在全连通网络下的信道接入时延和吞吐量-OPNET-based single-channel CSMA protocol describes the simulation of the major network connectivity in the whole channel access delay and throughput
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Size: 386048 |
Author: 小王 |
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Description: MAC层CSMA协议，是在OPNET中使用的-MAC layer，CSMA protocols
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Size: 92160 |
Author: Lin Bilan |
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