基于复用的自适应随机预约多址协议  

A Multiplexed Random Reservation Adaptive Assignment Protocol

作　　者：杨宇翔[1] 翟伯菊 

机构地区：[1]国家数字程控交换中心 [2]解放军96275部队

出　　处：《无线电通信技术》2007年第1期31-33,共3页Radio Communications Technology

摘　　要：为解决多业务环境下VSAT ATM中多址协议的信道分配效率及QoS问题,提出了基于复用的自适应随机预约多址协议(MRRAA)。在MRRAA中,由于rt-VBR业务所需带宽变化,其预约的时隙常有剩余,能被其他业务复用。复用rt-VBR业务剩余时隙时,按优先级顺序,首先是nrt-VBR,其次ABR,最后是UBR业务。用流体流方法表明,MR RAA在信源突发性比较高时,能大幅度提高信道的利用率,而又不违反业务的QoS要求。To solve the problem of channel utilization and QoS requirement, a new multiplexed random reservation adaptive assigurnent （MRRAA） protocol is first proposed. The main contribution of MRRAA is the slots reserved by rt-VBR can be used by other traffic sources according to their priorities. The rt-VBR traffic queue has the highest priority, followed by nrt-VBR, then by ABR queue. UBR traffic has the lowest priority. Rt-VBR queue has preemptive priority ; other traffic queue can get serviced only if there are no customers in rt-VBR queue .The result by fluid analysis shows high bandwidth exploitations as well as the QoS guarantee for each class of services is achieved.

关 键 词：卫星ATM MAC 自适应随机预约多址协议 流体流 

分 类 号：TN916.43[电子电信—通信与信息系统]