公开(公告)号：KR100853695B1

公开(公告)日：2008-08-25

申请号：KR1020070039300

申请日：2007-04-23

Applicant: 한국과학기술원

Inventor： 성단근 ,  황호영 ,  김성준 ,  정방철 ,  김호

IPC: H04W72/12 ,  H04L12/863 ,  H04W28/14

Abstract: A wireless LAN apparatus based on multiple queues is provided to perform transmission scheduling according to channel conditions in consideration of the time varying property of a wireless channel and control a transmission rate adaptively, thereby improving the performance of the wireless LAN apparatus. A wireless LAN(Local Area Network) apparatus includes plural queues(310), a wireless channel estimator, a multiple queue scheduler(320), a channel access controller(330), a physical layer processor(340), and a queue group scheduler. Each of the plural queues stores at least one transmission frame and outputs at least one transmission frame sequentially. The multiple queue scheduler selects at least one of the plural queues based on estimated channel properties. The wireless channel estimator converts the transmission frame, to which channel access parameters are set, into a signal in a physical layer and transmits the converts signal through a wireless channel corresponding to the selected queue. The queue group scheduler is provided as many as plural queue groups grouped according to a predetermined standard. The queue group scheduler selects at least one of the transmission frames from a queue selected by each of the plural multiple queue schedulers and transmits the selected one to the channel access controller.

Abstract translation: 提供了一种基于多个队列的无线LAN装置，以考虑到无线信道的时变特性，根据信道状况进行发送调度，并自适应地控制发送速率，从而提高无线LAN装置的性能。 无线LAN（局域网）装置包括多个队列（310），无线信道估计器，多队列调度器（320），信道访问控制器（330），物理层处理器（340）和队列组调度器 。 多个队列中的每一个存储至少一个传输帧，并且顺序地输出至少一个传输帧。 多队列调度器基于估计的信道属性来选择多个队列中的至少一个队列。 无线信道估计器将设置了信道接入参数的传输帧转换为物理层中的信号，并通过对应于所选队列的无线信道发送转换信号。 队列组调度器被提供为根据预定标准分组的多个队列组。 队列组调度器从由多个多个队列调度器中的每一个选择的队列中选择至少一个传输帧，并将所选择的一个发送到信道访问控制器。