首页>
外国专利>
the system research and the development of an alternative circuit path of a connection between two stations of a telecommunications network decentralized
the system research and the development of an alternative circuit path of a connection between two stations of a telecommunications network decentralized
展开▼
机译：分散的电信网络中两个站点之间的连接的替代电路路径的系统研究和开发
展开▼
页面导航
摘要
著录项
相似文献
摘要
1304486 Automatic exchange systems SIEMENS AG 19 April 1971 [13 March 1970] 23725/71 Heading H4K In an alternative routing strategy the network centres are given co-ordinates x and y corresponding to the nearest integral valued co-ordinates of a rectangular grid on the geographical map of the network, the links between centres being given co-ordinate parameters indicating the co-ordinate displacement of the centre from the centre to which each link gives access, an originating centre to destination centre route being plotted by computing the co-ordinate values of the displacement of the originating centre from the destination centre and link-by-link for each projected available route computing the algebraic residual displacement co-ordinates from the destination, the scalar values of such residual displacement co-ordinates, x and y, being added together as an estimate of residual distance so that, in comparison of one projected route with another, a choice of shortest route may be made. As a further criterion in route choice, and as a means of choosing between equal least residual distance values, the co-ordinates of a last centre on a projected route, the co-ordinates of a next centre in a proposed extension of that route, and the co-ordinates of the destination centre, are used to compute the area of the enclosed triangle taking the centres in that strict order in the determinant for the calculation. Such a computation effected for each projected extension of a route by one more link, indicates by the sign of the calculated areas whether the extension effects a divergence to the left or right from the direct route to the destination centre. If three such computations on successive extensions proposed for a route all have the same sign, and the residual distance factor for the last centre is not higher than the lowest of all such comparable factors in all projected routes, such projected route is preferred. When an area calculation for a triangle produces a zero result because the co-ordinates lie on a straight line, or because the last link of the projected route reaches the destination centre, the sign of the calculation is taken as positive or negative whichever is required to make up a set of three consecutive results of the same sign. The inter-centre links may be radio links.
展开▼
机译：1304486自动交换系统SIEMENS AG 1971年4月19日[1970年3月13日]标题H4K在另一种路由策略中，网络中心的坐标x和y对应于矩形网格上最接近整数值的坐标。网络的地理地图，中心之间的链接被赋予坐标参数，该参数指示中心相对于每个链接所访问的中心的坐标位移，通过计算坐标来绘制始发中心到目的地中心的路线起始中心相对于目标中心的位移值，以及针对每个预计的可用路径的逐条链接，计算出距目标的代数残余位移坐标，这些残余位移坐标的标量值x和y，被加在一起作为剩余距离的估算值，这样，在比较一条预计路线与另一条预计路线时，可以选择最短路线。作为路线选择的另一个标准，以及在相等的最小剩余距离值之间进行选择的一种方法，是投影路线上的最后一个中心的坐标，该路线的拟议扩展中的下一个中心的坐标，和目标中心的坐标用于计算封闭三角形的面积，并以行列式中的严格顺序为中心。通过一个额外的链接对路线的每个预计延伸进行的这种计算，通过计算区域的符号来指示该延伸是否影响从直达路线到目的地中心的向左或向右发散。如果针对某条路线建议的连续扩展的三个此类计算均具有相同的符号，并且最后一个中心的剩余距离因子不高于所有预计路线中所有此类可比较因子中的最低者，则首选此类投影路线。当由于坐标位于一条直线上或由于投影路线的最后一条线到达目的地中心而对三角形进行的面积计算得出的结果为零时，无论需要哪种计算符号都为正或负组成一组相同符号的三个连续结果。中心间链接可以是无线电链接。
展开▼
