After the whole functional architecture is introduced, we study the distributed coordination function ( DCF ) and the point coordination function ( PCF ). 分析了MAC层的总体功能结构,介绍了其中的分布协调功能(DCF)和点协调功能(PCF)(PCF)功能。
In this paper, the performance of integrating real-time and non real-time traffic in the PCF ( point coordination function ) mode of IEEE 802.11 is studied, and a novel real-time traffic admission control algorithm is proposed. 研究了IEEE802.11PCF(pointcoordinationfunction)机制下集成实时业务和非实时业务的性能,提出了一种新的实时业务准入控制算法。
Aimed at two primary channel allocation mechanisms of MAC layer in IEEE 802.11 WLAN, Distributed Coordination Function ( DCF ) and Point Coordination Function(PCF) ( PCF ), a performance analysis and comparisons have been done. 对IEEE802.11MAC层两种主要的信道分配机制&分布式协调功能(DCF)和点协调功能(PCF)(PCF)进行了性能的分析和比较。
In this paper, we briefly introduce the distributed coordination function ( DCF ) and point coordination function ( PCF ) of 802. 11 standard, and describe in more detail the basic principle and structure of 802.11e EDCF. 文章简要介绍了802.11中的分布式协调功能(DCF)和点协调功能(PCF)(PCF),重点阐述了802.11eEDCF的基本原理和组成结构。
IEEE 802.11, which is the main standard for WLAN products, can not provide QoS support by its MAC ( Media Access Control ) coordination function – DCF ( Distributed Coordination Function ) and PCF ( Point Coordination Function(PCF) ). 目前无线局域网产品普遍采用传统的IEEE802.11标准,其MAC(媒质接入控制)层的协调功能DCF(分布式协调功能)和PCF(点协调功能(PCF))却不能提供QoS支持。