After introducing the basic MAC technology in chapter 2, a Multi-Channel MAC Protocol With Receiver-Base Channel Selection (MC-MAC-RBCS protocol) is described in details, which can use independent common control channel to distribute the data channels to nodes dynamic and distribute the node load to idle data channel efficiently. For those reasons, MC-MAC-RBCS protocol can eliminate the contention/collision between packets well and relieve the hidden terminal and exposed terminal problem efficiently.
本文第二章在介绍了Ad Hoc 网络中常见的信道接入技术后,详细叙述了一种基于接收机选择信道的多信道MAC 协议(MC-MAC-RBCS 协议),该协议使用独立的公共控制信道控制节点对数据信道的访问,进行数据信道的动态分配,将节点负载有效的分配到空闲的数据信道上,基本消除了报文间的冲突,且较好的消除了隐藏终端和暴露终端的影响。
This article analyses the configuration of IS-95 wirless network common control channel,capacity of channel and number configuration of acess paging channel . It also analyses correlative factor that influence above calculate ,and configure optimization.
In practice,he takes initiatives to take part in the activities that might influence the New World Information Order and always pays attention to the public interests and public control issues in communication area.
To accomplish this, the connectionless operation of IP networks becomes more like a connection-oriented network where the path between the source and the destination is precalculated based on user specifics.
American Government intervention economic affair contained: American Government attempted to control monopolies publicly, to keep fair contest order, to adjust mutual relations enterprise and society, enterprise and government, enterprise and enterprise.
CSC(credit business quality comprehensive score card system) is based on Brower/Server system mode. Its development language is the Java,database is the SyBase,system designing is from the J2EE frame. The system includes six modules such as data collecting,data maintenance,public controling,data processing,statistics inquiry and achievement examination.
The design of legal system should give full play to the comparative superiority of public(enforcement) and private enforcement,fairly divide public controlled area and private controlled area,and strive to(seek) minimum of social controlled total cost.
Making use of microcomputer techniques,the interface collects information from common control exchange HJ-921 and repeats called subscriber number to rural telephone exchange.The proly ferns of urban-rural,rural-rural and toll - rural telephone direct dialling have well been solved, in all no change HJ-921.
Dalllas W.Smythe is the founder of the critic school of political and economic communication.He successfully combines the academic analysis and political study with practice,and thus presents such theories as “dependency theory” and “audience commodity” etc.In practice,he takes initiatives to take part in the activities that might influence the New World Information Order and always pays attention to the public interests and public control issues in communication area.
The occurrence of teacher research showed the shift of western education- al reform and research from "public control orientation" to" school autonomy orientation". Originating from the action research, the teacher research has evolved from professionalism, reflective practice to critical practice, which characterized by collabora- tive, practical, social and cultura1 critical.