为了很好地利用移动信道，CDPD系统有一个功能复杂的MAC(媒质接入控制)层。
The CDPD system has a complex media access control (MAC) layer in order to make full use of mobile channels.
改进的无线自组网多址协议采用控制信道和接入信道分离设计，改善了网络的信道利用率和传输的可靠性。
With separated designs for control channel and access channel, this MAC protocol mechanism improves the channel utilization and the data transport reliability.
传统上，解决冲突的方法是采用MAC协议控制数据包接入信道和冲突后的重传管理。
Traditionally, MAC protocols are used to control channel accessing and manage retransmissions after collision.
媒体接入控制技术的核心问题是如何协调多个用户共用一个信道实现高效可靠传输，即多址接入问题。
The medium access control Technology focuses on multi-address access, that is, how to coordinate users sharing a common channel to achieve efficient and reliable transmission.
在信道接入中为了提高包转发的效率，本文对802.11的MAC层控制帧做出一点改进。
In this thesis, we make a slightly modification for the control frame of the 802.11 MAC layer to enhance the transmission efficiency of packets in channel accessed.
为解决无线网络中长传播时延所带来的信道资源利用率低的问题，提出一种基于快速预约按需发送（FRODT）的媒质接入控制（MAC）协议。
To solve low channel utilization problem caused by long propagation delay in wireless networks, a fast reservation on-demand transmission (FRODT) medium access control (MAC) protocol is proposed.
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。
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。
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.
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