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AN MAC PROTOCOL SUPPORTING MULTIPLE TRAFFIC OVER MOBILE AD HOC NETWORKS

Journal of Electronics(China) 2003年第2期20卷 116-120页

作者： tian hui li yingyang hu jiandong zhang ping (College of Telecom. Eng., Beijing University of Posts & Telecommunications, Beijing 100876) College of Telecom. Eng. Beijing University of Posts & Telecommunications Beijing100876

This letter presents the design and performance of a multi-channel MAC protocol that supports multiple traffics for IEEE 802.11 mobile ad-hoc networks. The dynamic channel selection scheme by receiver decision is implemented and the number of the data channel is independent of the network topology. The priority for real-time traffic is assured by the proposed adaptive back off algorithm and different IFS. The protocol is evaluated by simulation and the results have shown that it can support multiple traffics and the performance is better than the performance that IEEE 802.11 standard provides.

关键词： Wireless networks Ad hoc wireless LAN Medium access control protocol

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A draft sequence of the rice (Oryza sativa ssp. indica) genome

引用

Chinese Science Bulletin 2001年第23期46卷 1937-1942页

作者： YU Jun, hu Songnian, WANG Jun,li Songgang WONG Ka-Shu Gane, liU Bin,DENG Yajun, DAI li, ZHOU Yan,zhang Xiuqing, CAO Mengliang, liU Jing,SUN jiandong , TANG Jiabin, CHEN Yanjiong,huANG Xiaobing, liN Wei, YE Chen, TONG Wei,CONG lijuan, GENG Jianing, HAN Yujun, li lin,li Wei, hu Guangqiang, huANG Xiangang,li Wenjie, li Jian, liU Zhanwei, li Long,liU Jianping, Ql Qiuhui, liU Jinsong, li li,WANG Xuegang, LU Hong, WU Tingling,Zhu Miao, Nl Peixiang, HAN hua, DONG Wei,REN Xiaoyu, FENG Xiaoli, GUI Peng,li Xianran, WANG Hao, XU Xin, ZHAI Wenxue,XU Zhao, zhang Jinsong, HE Sijie,zhang Jianguo, XU Jichen, zhang Kunlin,ZHENG Xianwu, DONG Jianhai, ZENG Wanyong,TAO lin, CHEN Xuewei, HE Jun, liU Daofeng,tian Wei, tian Chaoguang, XIA Hongai,li Gang, GAO hui, li ping, CHEN Wei ,WANG Xudong, zhang Yong, hu Jianfei,WANG Jing, liU Song, YANG Jian,zhang Guangyu, XIONG Yuqing, li Zhijie,MAO Long, ZHOU Chengshu, Zhu Zhen,CHEN Runsheng, HAO Bailin,ZHENG Weimou, CHEN Shouyi, QUO Wei,li Guojie, liU Siqi, huANG Guyang,TAO Ming, WANG Jian, Zhu lihuang,YUAN Longping& YANG huanmingBeijing Genomics Institute/Center of Genomics & Bioinformatics, Chinese Academy of Sciences, Beijing 101300, China Hangzhou Genomics Institute/Institute of Bioinformatics of Zhejiang University/Key Laboratory of Bioinformatics of Zhejiang Province, Hangzhou 310007, China Institute of Genetics, Chinese Academy of Sciences, Beijing 100101, China National Hybrid Rice R & D Center, Changsha 410125, China Laboratory of Bioinformatics, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China College of life Sciences, Peking University, Beijing 100871, China Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 1Q0080, China Digital China Ltd., Beijing 100080, China Institute of Computing Technology, Chinese Academy of Sciences, Beijing 100080, China Medical College, Xi’an Jiaotong University, Xi’an 710061, ChinaThese authors contributed equally to this work.Corresponding author.Corresponden Beijing Genomics Institute/Center of Genomics & Bioinformatics Chinese Academy of Sciences Beijing China Hangzhou Genomics Institute/Institute of Bioinformatics of Zhejiang University/Key Laboratory of Bioinformatics of Zhejiang Province Hangzhou China College of life Sciences Peking University Beijing China Medical College Xi’an Jiaotong University Xi’an China Institute of Genetics Chinese Academy of Sciences Beijing China Laboratory of Bioinformatics Institute of Biophysics Chinese Academy of Sciences Beijing China National Hybrid Rice R & D Center Changsha China Institute of Theoretical Physics Chinese Academy of Sciences Beijing China Digital China Ltd. Beijing China Institute of Computing Technology Chinese Academy of Sciences Beijing China

The sequence of the rice genome holds fundamental information for its biology, including physiology, genetics, development, and evolution, as well as information on many beneficial phenotypes of economic significance. Using a "whole genome shotgun" approach, we have pro-duced a draft rice genome sequence of Oryza sativa ssp. in-dica, the major crop rice subspecies in China and many other regions of Asia. The draft genome sequence is constructed from over 4.3 million successful sequencing traces with an accumulative total length of 2214.9 Mb. The initial assembly of the non-redundant sequences reached 409.76 Mb in length, based on 3.30 million successful sequencing traces with a total length of 1797.4 Mb from an indica variant cultivar 93-11, giving an estimated coverage of 95.29% of the rice genome with an average base accuracy of higher than 99%. The coverage of the draft sequence, the randomness of the sequence distribution, and the consistency of BIG-ASSEM-BLER, a custom-designed software package

关键词： rice genome draft sequences.

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