公开(公告)号：EP1808032A4

公开(公告)日：2008-11-05

申请号：EP05817572

申请日：2005-11-07

申请人： MESHNETWORKS INC

发明人： STRUTT GUENAEL T ,  ZENG SURONG ,  OZER SEBNEM ZORLU ,  JOSHI AVINASH

IPC分类号： H04L12/26 ,  H04W40/02

CPC分类号： H04W40/02 ,  H04L1/18 ,  H04L45/122 ,  H04L45/124 ,  H04L45/125 ,  H04L47/10 ,  H04W28/08 ,  H04W40/22

摘要： A system and method for calculating a routing metric that can select the route providing the best throughput in a multihopping network (100), based on one or more parameters including completion rates, data rates, MAC overhead and congestion. The system and method are capable of selecting a route in a multihopping network (100) having a high throughput, comprising calculating a routing metric at one or more nodes (102, 106, 107), wherein the routing metric enables the one or more nodes (102, 106, 107) to select the route in the network (100). The routing metric can include network information such as the raw data rate, the completion rate, and the media access control overhead and congestion.

公开(公告)号：EP1631915A4

公开(公告)日：2012-04-25

申请号：EP04754678

申请日：2004-06-07

申请人： MESHNETWORKS INC

发明人： JOSHI AVINASH ,  STRUTT GUENAEL T

IPC分类号： G06F15/173 ,  H04L12/28 ,  H04L12/56 ,  H04L29/08 ,  H04W24/00 ,  H04W40/14 ,  H04W40/18 ,  H04W48/08 ,  H04W72/08 ,  H04W84/18 ,  H04W88/04 ,  H04W92/18

CPC分类号： H04W24/08 ,  H04L45/00 ,  H04L69/329 ,  H04W24/00 ,  H04W40/14 ,  H04W40/18 ,  H04W72/085 ,  H04W84/18 ,  H04W92/18

公开(公告)号：EP1510021A4

公开(公告)日：2006-09-20

申请号：EP03757310

申请日：2003-06-04

申请人： MESHNETWORKS INC

发明人： STRUTT GUENAEL T ,  BELCEA JOHN M

IPC分类号： H04L12/28 ,  H04B7/26 ,  H04B7/216

CPC分类号： H04W56/002 ,  H04W56/008 ,  H04W92/18

摘要： A system and method for improved Time Of Arrival (TOA) distance measurements between nodes of a wireless ad-hoc network. Specifically, the present invention is a system and method of distance estimation using square-root raised-cosine pulse shaping and chip matched filters on direct sequence spreading waveforms, the multiplication of which produces raised-cosine filtered pulse responses. The responses are used to identify a time when a function is at a maximum, corresponding to the actual signal reception time. The system and method produces a raised-cosine filtered pulse response and an auto-correlation function based on a received signal. A peak value of the auto-correlation function is calculated based on a quadratic approximation, which is corrected using a signal sampling phase offset detected between the raised-cosine filtered pulse response and the calculated peak value. The calculated peak value is then corrected to represent an actual reception time for received signals.