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CSMA是什么意思,CSMA的意思翻译、用法、同义词、例句

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常用词典

  • abbr. 载波侦听多路访问(Carrier Sense Multiple Access)

  • 例句

  • This paper proposes an algorithm that estimates the communication delay in sensor networks with CSMA/CA communication mechanism.

    针对使用CSMA/CA通信机制的无线传感器网络提出一种通信延迟估计算法。

  • For the case that one CSMA/CD system is connected with two gateways, the expressions of equivalent parameters in the equivalence model are derived.

    对于一个CSMA/CD 系统与两个信关相连的情况。 文中推导出了等效模型中各等效参数的表达式。

  • The Ethernet technology is based on the non-deterministic protocols such as CSMA/CD, which can performance well on office environment due to their big throughput and cheap price.

    以太网技术是建立在CSMA/CD这样的非确定网络协议基础之上的,它的优点是可以实现很大的吞吐量,并且软硬件设备非常廉价。

  • Wireless data communication based on CSMA protocol, and it realize in firmware program.

    无线数据通信的实现是基于CSMA协议,在固件编程有所体现。

  • Combining with graph coloring algorithm in graph, we propose a distributed adaptive graph- coloring algorithm based on CSMA protocol to reduce reader collisions in the RFID systems.

    并在CSMA协议的基础上,结合图论中的图着色方法,提出了自适应的图着色算法解决射频识别系统中阅读器冲突。

  • According to the principle of CSMA/CD, the author analyses the relation between network throughput and load. The maximum throughput of real network can be calculated.

    从CSMA/CD的原理出发,分析了网络吞吐量和网络负载之间的关系,并计算出实际网络最大吞吐量的数值.。

  • The primary problem of using Ethernet into CNC system is the real-time problem which mainly caused by carrier sense multiple access with collision detection (CSMA / CD) mechanism.

    以太网用于数控系统首先要解决的就是实时性问题,而实时性问题主要来源于冲突检测载波监听多点访问(CSMA/CD)机制。

  • The distance limitation and delay problems encountered in local area networks are eliminated by the use of broadband technology and a hybrid token-CSMA/CD protocol.

    由于采用了宽带技术和总线网令牌与CSMA/CD的混合协议,从而解决了局域网所面临的距离和时延问题。

  • Token Bus and hybrid CSMA/Token protocols are exemplified to illustrate the universal applicability of the proposed model.

    令牌总线和混合CSMA令牌协议被作为范例演示了该数学模型的普遍适用性。

  • Based on 802.11PSM, the thesis points out two problems existing in power management for CSMA/CA—energy loss due to overhear and delay of response time for stations in power saving mode.

    论文以802.11PSM为基础,研究发现以CSMA/CA为基础的功率管理存在两大问题:意外侦听造成的能量开销和省电模式下的收包反应延迟。

  • Compared with CSMA, the conclusion is MACAM enable the support of multicast servers in MANET because of its reliable data transmission and higher channel utilization.

    比较CSMA多播协议,得出结论该协议具有数据传输可靠以及较高的带宽利用率优点,支持MANET网络中的多播服务。

  • With a switch, or with a direct cable between two computers, CSMA/CD is unnecessary: the two sides can simply both transmit at the same time.

    如果有交换机或直接连接两台计算机的电缆,CSMA/CD技术就根本没必要了:双方同时传输数据不会产生任何问题。

  • The advantages of random channel access technique of the CSMA/CA/CD, of the SWARQ error control and of encoding of constant proportion code were proved by theoretical analysis.

    从理论上论证了调度系统采用随机CSMA/CA/CD信道访问技术、SWARQ差错控制方式及各种信息采用等比码编码方式的优点。

  • Methods PCR enzyme digestion was used to perform the survival motor neuron (SMN) genetic diagnosis of 7 patients with CSMA.

    方法应用PCR-酶切分析法对7例CSMA患儿进行运动神经元生存(SMN)基因的基因诊断分析。

  • This paper focuses on the throughput analysis for CSMA-type random access protocol of the distribution computer communication network.

    本文运用遍历平稳随机过程分析了具有CSMA方式的分布无线多信道计算机通信网吞吐量问题。

  • Objective To investigate the gene diagnosis of childhood onset spinal muscular atrophy(CSMA).

    目的探讨儿童型脊肌萎缩症(CSMA)的基因诊断方法。

  • Because of its speciality, direct application of the traditional CSMA protocol may cause more collisions, long delay problems and so on.

    由于其特殊性,传统CSMA协议直接应用于无线传感器网络中会带来数据包冲突增加和时延增大等问题。

  • With the rapid development of DSP technology, CSMA/CA protocal solves the problem of access collision on complicated situation validly and OFDM technology is used widely.

    随着数字信号处理技术的飞速发展,CSMA /CA协议有效解决了复杂环境下的访问冲突问题,使OF DM技术得到了广泛应用。

  • By using OPNET simulation platform, the modeling and simulating technology for channel access protocols based on ALOHA and CSMA/CD were stu***d.

    应用OPNET仿真平台,针对ALOHA和CSMA/CD,对信道接入协议的建模仿真技术进行了研究。

  • This is called full duplex operation, as opposed to half duplex for traditional CSMA/CD operation.

    这种方法叫全双工操作,和传统CSMA/CD采用的半双工操作相对。

  • This scheme uses CSMA/CA for reference and has resolved the problem which exists in the adaptive frequency hopping system, so this scheme will decrease the collisions among users greatly.

    它借鉴了CSMA/CA的技术思想,解决了自适应跳频中存在的无法识别系统内其他用户干扰的问题,从而大大降低了跳频中用户之间的碰撞。

  • The simulation results of CSMA/CD deployed as the method of subscriber access and dynamic channel allocation are presented.

    最后,对CSMA/CD作为用户接入机制和实现信道动态分配手段的性能进行了计算机模拟分析。

  • These algorithms are successful in low load network, such as the CSMA/CD protocol used in Ethernet, but in the high load system, they are no longer adequate.

    这些协议被成功应用于负载不高的网络,如以太网中的CSMA/CD,但在高负载时信道利用率却很低。

  • MAC layer and network layer adopt IEEE802.11 protocol and on-demand routing protocol, and improving up CSMA/CA protocol.

    MAC层、网络层分别采用IEEE802.11协议和按需驱动路由协议实现,并对CSMA/CA协议进行了改进。

  • The proposed protocol is based on CSMA/CA basis. The dynamic channel selection scheme is implemented and the number of the data channel is independent of the network topology.

    该协议基于竞争的CSMA/CA机制,具有动态的信道分配并且信道数目不依赖于网络拓扑结构的特点。

  • Fundamental principles of some multipoint access technologies, such as CSMA and CSMA/CD, are introduced with corresponding performance simulation curves.

    介绍了几种多点接入技术的基本原理,如CSMA和CSMA/CD,并给出了各自相应的性能仿真曲线。

  • By referring to the classical CSMA/CD protocol, this paper presents an optimized CSMA-SNP/TR protocol, which is of better performance and has been verified both theoretically and experimentally.

    在传统的CSMA/CD协议的基础上,本文提出了一种性能更佳的优化CSMA-SNP/TR协议,并从理论分析和模拟实验中得到验证。

  • But it is unable to avoid the hidden terminal problem of CSMA due to two hop clustering structure in each cluster.

    两跳的分群结构使得在群内使用CSMA仍无法避免隐藏终端问题。

  • 专业解析

    CSMA(载波侦听多路访问,Carrier Sense Multiple Access)是一种用于计算机网络和通信系统的介质访问控制协议,其核心机制是通过“先侦听再发送”的方式协调多个设备对共享信道的访问。该技术最早可追溯至1970年代的ALOHAnet项目,现已成为以太网和无线局域网的基础协议之一。

    1.核心原理与工作机制

    CSMA要求设备在发送数据前先检测信道是否空闲。若信道被占用,设备会等待随机时间后重试,这种方式称为“非持续CSMA”;若持续检测到空闲则立即发送,称为“持续CSMA”。这一机制有效减少了多设备同时传输导致的信号冲突,但无法完全避免冲突,因此衍生出两种改进方案:

    2.技术优势与局限性

    CSMA的优势在于其分布式控制特性,无需中央协调器即可实现多设备高效共享信道。然而,在信道负载较高时,冲突概率显著增加,导致吞吐量下降。根据《计算机网络:自顶向下方法》的定量分析,传统CSMA/CD的理论最大信道利用率约为37%,而采用分段重传优化的现代以太网可达90%以上。

    3.实际应用场景

    目前CSMA/CD仍是千兆以太网的基础协议(IEEE 802.3z,而CSMA/CA被Wi-Fi 6(802.11ax)等无线标准沿用并优化,支持多用户多输入多输出(MU-MIMO)技术。工业物联网中的时间敏感网络(TSN)也借鉴了CSMA的冲突管理机制,以满足低延迟需求。

    网络扩展资料

    CSMA是“载波侦听多路访问”(Carrier Sense Multiple Access)的缩写,属于计算机网络中介质访问控制协议(MAC协议)的一种,主要用于解决多个设备共享同一通信信道时的协调问题。

    核心概念解析:

    1. 载波侦听(Carrier Sense)
      设备在发送数据前会先检测信道是否空闲。若检测到信道上有其他设备正在传输数据(即存在“载波”),则会延迟发送,避免冲突。

    2. 多路访问(Multiple Access)
      多个设备可以共享同一物理信道进行通信,通过协议规则实现高效协作。

    3. 冲突处理机制

      • CSMA/CD(带冲突检测):用于有线网络(如传统以太网)。若检测到冲突(多设备同时发送),则立即停止传输,随机等待后重试。
      • CSMA/CA(带冲突避免):用于无线网络(如Wi-Fi)。通过“请求发送/允许发送”(RTS/CTS)机制预约信道,减少冲突概率。

    典型应用场景:

    优势与局限:

    如需更深入的技术细节(如退避算法、帧格式),建议参考计算机网络教材或IEEE 802.3/802.11标准文档。

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