公开(公告)号：CA2600993C

公开(公告)日：2011-10-25

申请号：CA2600993

申请日：2006-03-06

Applicant: MOTOROLA INC

Inventor： PANDEY APARNA ,  EKL RANDY L ,  LOGALBO ROBERT D ,  WARE CHRISTOPHER G

IPC: G06F15/16

Abstract: Methods for performing client to client communication in a wireless local area network are disclosed. At an 'n' tier client in the wireless local area network, a signaling message from an 'n-1' tier client is received wherein the signaling message comprises a first period, a second period, and a third period. Communicating with the 'n-1' tier client during the first period and communicating with the 'n+1' tier client during the third period. At an access point in the wireless local area network, an association table identifying clients in the wireless local area network is created and a first period for client to client communication based upon the association table and traffic in the wireless local area network is determined where the access point does not communicate with the clients during the first period.

公开(公告)号：MX2008016108A

公开(公告)日：2009-01-20

申请号：MX2008016108

申请日：2007-05-02

Applicant: MOTOROLA INC

Inventor： EKL RANDY L ,  PANDEY APARNA ,  WARE CHRISTOPHER G

IPC: H04W48/20 ,  H04W16/24 ,  H04W36/08 ,  H04W48/16

Abstract: Un método para comunicar transmisiones de radiobaliza desde un punto de acceso inalámbrico (WAP) a un transceptor de cliente en un sistema de red de área local inalámbrica (WLAN) (figura 1) incluye obtener una temporización de referencia para el punto de acceso inalámbrico; después se determina la configuración de sector y la temporización de sector en el WAP; después se calcula un tiempo de transmisión de radiobaliza objetivo virtual (TBTT) para el sector de interés que recibe servicio por parte del WAP, tal como es un número de canal del sector de interés; finalmente, el método provee escuchar una señal de radiobaliza de sector desde el sector de interés en el TBTT virtual y el número de canal calculado.

公开(公告)号：DE112006000810T5

公开(公告)日：2008-02-07

申请号：DE112006000810

申请日：2006-03-27

Applicant: MOTOROLA INC

Inventor： METKE ANTHONY R ,  EKL RANDY L

IPC: H04W36/32

Abstract: A self-learning geographically aware handoff method and system is disclosed. The system includes a handoff manager (108), which receives information about a position and movement of the mobile nodes (102a, 102b, 102c and 102d) present in the mobile network (100). The handoff manager learns the coverage capabilities of the access points (104a, 104b, 104c and 104d) in the mobile network. It then determines a second access point, to which a mobile node will handoff to, based on the learned coverage capabilities. The handoff manager then informs the mobile node about the second access point.

公开(公告)号：CA2508569A1

公开(公告)日：2004-07-22

申请号：CA2508569

申请日：2003-12-09

Applicant: MOTOROLA INC

Inventor： EKL RANDY L ,  ROTSTEIN RON

IPC: H04J3/16 ,  H04L20060101 ,  H04L12/28 ,  H04L12/413 ,  H04W48/12 ,  H04W74/02

Abstract: An access point (100) transmits at least a first set of parameters intended for a first set of users (102) and a second set of parameters intended for a second set of users (104). The access point communicates with the first set of users during a first time period and communicates with the second set of use rs during a second time period, wherein the first time period and the second ti me period are exclusive of each other. Moreover, the first time period and the second time period lapse prior to the AP transmitting a next set of paramete rs intended for the first set of users.

公开(公告)号：HK1024355A1

公开(公告)日：2000-10-05

申请号：HK00103636

申请日：2000-06-16

Applicant: MOTOROLA INC

Inventor： CASSIDY MARC ,  MACDONALD DANIEL J ,  EKL RANDY L

IPC: H04W4/08 ,  H04W74/04 ,  H04B

Abstract: A method of registration in a communication system includes the steps of detecting (201) an elevated registration level of at least a part of a communication system, selecting (203) a group recovery time, determining (205) a first random registration time that is less than or equal to the group recovery time, registering (209) a first communication unit (111) from a first talkgroup at the first random registration time, and upon receiving (212) a group activity message for the first talkgroup, delaying (213) registration by at least a second communication unit (113) from the first talkgroup.

公开(公告)号：GB2315958A

公开(公告)日：1998-02-11

申请号：GB9715931

申请日：1997-07-28

Applicant: MOTOROLA INC

Inventor： ABLAY SEWIM FEWSI ,  EKL RANDY L ,  NOVORITA ROBERT J

IPC: H04W48/20 ,  H04W72/04 ,  H04Q3/00

Abstract: In a communication system, the individual processes of call establishment and control (call model elements) much as call authorisation, call set up, service control and call termination, are distributed over a plurality of network nodes. Each node is capable of handling one or more call model elements. Before a call is processed, the call model elements are assigned to a plurality of nodes according to node availability and capability. If a particular node becomes faulty during a call, the call model element assigned to that node can be reassigned to a different node before it becomes active. In this way elements are dynamically and flexibly allocated to nodes so that sensitivity to single point node failures is decreased. Elements can be reassigned according to an algorithm to minimise access delays or traffic queues. The network nodes may be geographically distributed among a plurality of sites.

公开(公告)号：WO2005062839A3

公开(公告)日：2006-09-28

申请号：PCT/US2004042841

申请日：2004-12-21

Applicant: MOTOROLA INC ,  WARE CHRISTOPHER ,  EKL RANDY L ,  RAKOTOARIVELO THIERRY

Inventor： WARE CHRISTOPHER ,  EKL RANDY L ,  RAKOTOARIVELO THIERRY

IPC: H04J3/16 ,  H04L12/28 ,  H04L12/403 ,  H04L12/42 ,  H04L12/56 ,  H04W4/10 ,  H04W72/12 ,  H04W74/06 ,  H04W84/12

CPC classification number: H04W72/005 ,  H04W4/10 ,  H04W72/1278 ,  H04W74/06 ,  H04W76/005 ,  H04W84/12

Abstract: A method and system for scheduling multicast transmissions in a WLAN involves transmissions between a Quality of Service (QoS) Access Point (QAP) (105) and a plurality of stations (110). The method includes transmitting a first group poll (410) from a QAP (105) to each station (110) in a multicast group comprising a plurality of stations (110) (step 705). An active station (110) and inactive stations (110) among said plurality of stations (110) are then identified (step 510). Next, a directed Contention Free (CF) poll (425) is transmitted from the QAP (105) to the active station (110) (step 715). An inbound QoS data frame (415) is then transmitted from the active station (110) to the QAP (105) (step 720). An outbound QoS data frame (420) corresponding to the inbound QoS data frame (415) is then multicast from the QAP (105) to the inactive stations (110) (step 725).

Abstract translation: 一种用于在WLAN中调度多播传输的方法和系统涉及服务质量（QoS）接入点（QAP）（105）和多个站（110）之间的传输。 该方法包括在包括多个站（110）的多播组中从QAP（105）向每个站（110）发送第一组轮询（410）（步骤705）。 然后识别所述多​​个站（110）中的活动站（110）和非工作站（110）（步骤510）。 接下来，从QAP（105）向活动站（110）发送定向无竞争（CF）轮询（425）（步骤715）。 入站QoS数据帧（415）然后从活动站（110）发送到QAP（105）（步骤720）。 然后，对应于入站QoS数据帧（415）的出站QoS数据帧（420）从QAP（105）多播到非活动站（110）（步骤725）。

公开(公告)号：WO2005076817A3

公开(公告)日：2006-04-27

申请号：PCT/US2005002447

申请日：2005-01-27

Applicant: MOTOROLA INC ,  PHILLIPS JOSEPH E ,  DERANGO MARIO F ,  EKL RANDY L ,  RETZER MICHAEL H

Inventor： PHILLIPS JOSEPH E ,  DERANGO MARIO F ,  EKL RANDY L ,  RETZER MICHAEL H

IPC: H04J3/24 ,  H04L12/28 ,  H04L12/56

CPC classification number: H04W4/06 ,  H04W72/005 ,  H04W88/08

Abstract: In one embodiment of the present invention, an access point (111) receives a multicast packet intended for a particular multicast group. Upon receipt, the access point only rebroadcast the multicast packet over a wireless segment if it determines that there is at least one wireless subscriber unit (131) belonging to the particular multicast group and associated with the access point that did not originate the multicast packet. Optionally, if the multicast packet signals an automatic rebroadcast of the multicast packet over the wireless segment, the access point automatically rebroadcasts the multicast packet without determining whether there is at least one wireless subscriber unit belonging to the particular multicast group and associated with the access point that did not originate the multicast packet. (See figure 1)

Abstract translation: 在本发明的一个实施例中，接入点（111）接收用于特定多播组的组播分组。 在接收到接收点时，如果它确定属于特定多播组并且与不是始发多播分组的接入点相关联的至少一个无线用户单元（131），则接入点仅在无线段上重播广播分组。 可选地，如果组播分组通过无线分段发信号通知多播分组的自动转播，接入点将自动重播广播分组而不确定是否存在属于特定多播组并与接入点相关联的至少一个无线用户单元 这不是源于组播数据包。 （见图1）

公开(公告)号：WO2004062165A3

公开(公告)日：2004-12-09

申请号：PCT/US0339334

申请日：2003-12-09

Applicant: MOTOROLA INC

Inventor： ROTSTEIN RON ,  EKL RANDY L ,  JOHNSON MARK J

IPC: H04L25/02 ,  H04L25/03 ,  H03K5/159

CPC classification number: H04L25/021 ,  H04L25/0202 ,  H04L25/03006

Abstract: In a system that uses equalization signaling to determine at least one equalization parameter representative of at least one property of a channel, a signal is received on the channel. A rate of change of the at least one property of the channel is estimated. Based on the rate of change of the at least one property of the channel, the equalization signaling is adjusted.

Abstract translation: 在使用均衡信令来确定表示信道的至少一个属性的至少一个均衡参数的系统中，在信道上接收信号。 估计频道的至少一个属性的变化率。 基于信道的至少一个属性的变化率，调整均衡信令。

公开(公告)号：EP1442536A4

公开(公告)日：2005-04-13

申请号：EP02802430

申请日：2002-10-04

Applicant: MOTOROLA INC

Inventor： EKL RANDY L ,  KORUS MICHAEL F

IPC: H04L12/18 ,  H04M3/42 ,  H04M3/56 ,  H04W4/06 ,  H04B7/00 ,  G08B5/22 ,  H04Q1/30 ,  H04Q7/00 ,  H04Q7/20

CPC classification number: H04W76/002 ,  H04L12/185 ,  H04L12/1877 ,  H04L12/189 ,  H04M3/42221 ,  H04M3/56 ,  H04M2203/205 ,  H04M2207/18 ,  H04W8/186 ,  H04W8/26

Abstract: Systems and methods for implementing dispatch and/or point-to-point calls using pre-established multicast groups are disclosed. The methods include setting up and semi-permanently maintaining pre-established multicast group(s) in advance of prospective call(s), and utilizing the semi-permanent multicast groups when certain call requests are received to reduce call set up time and system loading. A zone controller identifies groups of endpoints that are expected to collectively participate in prospective call(s). The zone controller causes pre-established multicast groups to be established between the endpoints by distributing respective multicast group addresses to the endpoints in advance of prospective call(s). The endpoints, which may include adjacent sites, issue Join commands to associated network devices causing the network devices to establish a multicast routing tree for the multicast group. Later, upon a call request being received for a particular call, the zone controller identifies participating endpoints for the call. If the participating endpoints are members of a pre-established multicast group, the zone controller may cause payload for the call to be addressed to the multicast group address of the pre-established multicast group so that it may be distributed via the already-established multicast routing tree. If the participating endpoints are not members of a pre-established multicast group, the zone controller may establish a multicast group for the duration of the call.