This paper gives an overview of topologies, medium access control protocols and current status for metropolitan area networks.
本文对城域网的拓扑结构、介质访问控制协议及国际上城域网研究动态进行了综述。
For the directional antenna and wireless channel characteristics, there are many directional antenna based access control protocols have been proposed to achieve channel spatial reuse.
针对定向天线和无线信道的特点，有许多基于定向天线的接入控制协议被提出来，以实现信道的空分复用。
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 carrier sense in physical layer.
无线自组网的介质访问控制(MAC)协议是与物理层密切相关的，大多数MAC协议都要求物理层具备载波感知能力。
The structure of the system, mail service protocols, mode of messaging, allocation of mailboxes as well as personal security for authentication and access control measures are discussed in this paper.
文中论述了该系统的结构、邮递服务协议、邮递方式、信箱的管理及信件的保密和存取控制手段等问题。
These volunteers are also building free protocols that enable legal access without shifting control to a last-mile access provider.
这些志愿者同时也编写一些免费的协议，使之合法接入而不用把控制权转移给最后一里的供应商。
As sensor nodes are energy limited, saving energy is the primary issue in designing Medium Access Control (MAC) protocols in sensor networks.
传感器节点能量受限，节能是传感器网络中媒体访问控制(MAC)协议设计的首要问题。
It is mainly analyzed that the basic principle of IEEE 802.15.3 media access control protocol which is as one of the most suitable protocols for ultra-wideband networks.
主要分析有望适配应用在未来超宽带网络中的IEEE802.15.3的媒体接入控制协议的基本原理，应用超宽带通信具有精确定位信息的特征，改进IEEE 802.15.3协议。
Based on the two protocols, a privacy preserving protocol is proposed for the access control policies and credentials.
最后基于策略计算协议和属性相等测试协议提出了策略和证书的隐私保护协议。
Medium access control (MAC) protocol is an important component of the wireless data communication protocols.
信道接入协议(MAC)是无线数据通信协议的重要组成部分。
Medium access control (MAC) protocol is an important component of the wireless data communication protocols.
信道接入协议(MAC)是无线数据通信协议的重要组成部分。
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