公开(公告)号：WO2009111399A1

公开(公告)日：2009-09-11

申请号：PCT/US2009/035733

申请日：2009-03-02

Applicant: MOTOROLA, INC. ,  CHU, Yuechun ,  RAMACHANDRAN, Shyamal

Inventor： CHU, Yuechun ,  RAMACHANDRAN, Shyamal

IPC: H04W48/12 ,  H04W76/04 ,  H04W84/18

CPC classification number: H04W48/12 ,  H04W48/02 ,  H04W84/18

Abstract: A method is provided for enabling periodic scanning in a mesh network. The method includes transmitting from a first access point an announcement that it will be temporarily unavailable, wherein the announcement includes: a first information element for quieting a station associated with the access point during a time period; and a second information element for instructing a neighboring access point to temporarily suspend transmissions to the access point during the time period that the stations are quieted.

Abstract translation: 提供了一种用于在网状网络中进行周期性扫描的方法。 该方法包括：从第一接入点发送将暂时不可用的通告，其中所述通知包括：用于在一段时间段内对与所述接入点相关联的站点进行静止的第一信息元素; 以及第二信息单元，用于指示相邻接入点在台站安静的时段期间临时挂起到接入点的传输。

公开(公告)号：WO2009006085A1

公开(公告)日：2009-01-08

申请号：PCT/US2008/067961

申请日：2008-06-24

Applicant: MOTOROLA, INC. ,  RAMACHANDRAN, Shyamal ,  VISOTSKY, Eugene

Inventor： RAMACHANDRAN, Shyamal ,  VISOTSKY, Eugene

IPC: H04L12/56

CPC classification number: H04B7/15592 ,  H04B7/2606 ,  H04W72/1205 ,  H04W84/047

Abstract: A method of communication scheduling in a multihop network is provided. The multihop network comprises a base station and at least one relay station. The method includes allocating a downlink relay to a relay station; assigning a first one or more connection identifiers to be locally scheduled at the relay station for communication on a first portion of the downlink relay; and assigning a second one or more connection identifiers to be centrally scheduled by the base station for communication on a second portion of the downlink relay.

Abstract translation: 提供了一种多跳网络中的通信调度方法。 多跳网络包括基站和至少一个中继站。 该方法包括向中继站分配下行链路中继; 分配在所述中继站处本地调度的第一个或多个连接标识符，用于在所述下行链路中继站的第一部分上进行通信; 以及分配由所述基站集中调度的第二一个或多个连接标识符，用于在所述下行链路中继的第二部分上进行通信。

公开(公告)号：WO2008057669A3

公开(公告)日：2008-05-15

申请号：PCT/US2007/079516

申请日：2007-09-26

Applicant: MOTOROLA, INC. ,  RAMACHANDRAN, Shyamal ,  GOLDBERG, Keith, J.

Inventor： RAMACHANDRAN, Shyamal ,  GOLDBERG, Keith, J.

IPC: H04Q7/20

Abstract: A system and method to facilitate path selection in a multihop network includes receiving by a base station a path metric associated with each of a plurality of stations neighboring to a subscriber station; comparing each of the path metrics with a current path metric; and transmitting a path selection recommendation from the base station to the subscriber station when one of the compared path metrics is better than the current path metric.

公开(公告)号：WO2006073816A3

公开(公告)日：2006-07-13

申请号：PCT/US2005/046219

申请日：2005-12-20

Applicant: MESHNETWORKS, INC. ,  STRUTT, Guenael ,  RAMACHANDRAN, Shyamal

Inventor： STRUTT, Guenael ,  RAMACHANDRAN, Shyamal

IPC: H04B7/005 ,  H04Q7/00

Abstract: A system and method for determining the mobility of a node (102) in a wireless communication network (102). The system and method determine the distance between the node (102) and at least one stationary neighboring node (102, 106, 107) at at least two or more time points, using at least two moving average filters, to arrive at two distance values. The system and method then determine the relative velocity based on the at least two distance values, and thus determine whether the node (102) is mobile.

公开(公告)号：WO2006044672A2

公开(公告)日：2006-04-27

申请号：PCT/US2005/037034

申请日：2005-10-17

Applicant: MESHNETWORKS, INC. ,  JOSHI, Avinash ,  RAMACHANDRAN, Shyamal

Inventor： JOSHI, Avinash ,  RAMACHANDRAN, Shyamal

IPC: H04Q7/20

CPC classification number: H04W36/30 ,  H04W36/12

Abstract: A system and method for facilitating inter-frequency handoff of a mobile node (102) in a wireless communication network (100). The system and method permit a mobile node (102), equipped with a single receiver, to perform handoffs seamlessly from one infrastructure node (106-1) to another infrastructure node (106-2) without having to scan through multiple frequencies and without having to interrupt the active communication session.

Abstract translation: 用于促进无线通信网络（100）中的移动节点（102）的频率间切换的系统和方法。 该系统和方法允许配备有单个接收机的移动节点（102）无缝地从一个基础设施节点（106-1）到另一个基础设施节点（106-2）执行越区切换，而不必扫描多个频率， 中断活动通信会话。