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公开(公告)号：EP1559284A4
公开(公告)日：2009-03-18
申请号：EP03809632
申请日：2003-10-22
Applicant: MOTOROLA INC
Inventor： SMAVATKUL NATTAVUT , CHEN YE , EMEOTT STEPHEN
CPC classification number: H04L1/1874 , H04L1/1664 , H04W52/0216 , H04W74/06 , Y02D70/00 , Y02D70/142
Abstract: A method for accessing a wireless local area network (WLAN) channel and providing quality of service (QoS) for voice in a system supporting both voice and data services. Under the method, a communication device (302, 303) contends for a medium (channel). Upon identifying a transmit opportunity, the device transmits a voice packet to an access point (AP) (304) and polls the AP for downlink traffic. A low power implementation is feasible because the communication device can sleep, wake up to contend for the medium, transmit a voice packet to the AP, request a voice packet from the AP, transmit an acknowledgement, and go back to sleep.
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2.发明专利
公开(公告)号：CA2550394C
公开(公告)日：2009-09-15
申请号：CA2550394
申请日：2004-12-14
Applicant: MOTOROLA INC
Inventor： SIMPSON FLOYD D , CHEN YE , WANG HUAI Y , WILSON TIMOTHY J , SMAVATKUL NATTAVUT , EMEOTT STEPHEN P
Abstract: A mobile station (106) establishes a real time communication link via an access point (102) for carrying voice or other time-sensitive data. A WLAN subsystem (204) of the mobile station is normally kept in a low power state. Upon initiating a communication link the mobile station signals to the acces s point that unscheduled power save delivery mode will be used (614), and the access point reserves resources to assure the necessary quality of service. The mobile station initiates a frame transaction by first powering up the WL AN subsystem (712), acquiring the WLAN channel (407), and transmitting a pollin g frame. Upon successful receipt of the polling frame the access point prepare s to reply with an aggregate response. The aggregate response commences by transmitting all data in an aggregate buffer, including both reserved and unreserved data buffers. Upon successful receipt of the aggregate response, the mobile station places the WLAN subsystem back into a low power state.
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公开(公告)号：AU2003301607A1
公开(公告)日：2004-05-13
申请号：AU2003301607
申请日：2003-10-22
Applicant: MOTOROLA INC
Inventor： CHEN YE , EMEOTT STEPHEN , SMAVATKUL NATTAVUT
Abstract: A method for accessing a wireless local area network (WLAN) channel and providing quality of service (QoS) for voice in a system supporting both voice and data services. Under the method, a communication device (302, 303) contends for a medium (channel). Upon identifying a transmit opportunity, the device transmits a voice packet to an access point (AP) (304) and polls the AP for downlink traffic. A low power implementation is feasible because the communication device can sleep, wake up to contend for the medium, transmit a voice packet to the AP, request a voice packet from the AP, transmit an acknowledgement, and go back to sleep.
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公开(公告)号：EP1658740A4
公开(公告)日：2009-10-28
申请号：EP04780547
申请日：2004-08-09
Applicant: MOTOROLA INC
Inventor： EMEOTT STEPHEN P , CHEN YE , SMAVATKUL NATTAVUT
CPC classification number: H04W52/0229 , H04W74/08 , H04W84/12 , Y02D70/00 , Y02D70/142 , Y02D70/22 , Y02D70/23
Abstract: An access point ( 11 ) for a wireless local area network ( 10 ) transmits a beacon message during a service interval period ( 21 ). This beacon message identifies, in a preferred embodiment, those subscriber units to whom the access point will shortly be transmitting data. Subscriber units that are not identified in the beacon message and that do not have data themselves to transmit to the access point can implement a power conservation mode of operation until the next beacon message. Subscriber units that have data, such as voice information, to transmit can utilize the beacon message contents to at least estimate a likely time by when the access point will have concluded making its transmissions to the subscriber units. That estimated time can then be used to facilitate scheduling a time at which a given subscriber unit will contend for an opportunity to transmit its data to the access point. In a preferred embodiment, this scheduled transmission time can potentially occur either during a contention window that follows the service interval period or during a dynamic contention window that follows the transmissions of the access point and concludes with the conclusion of the service interval period. Subscriber units can then use intervening periods of time to effect their power conservation schemes of choice.
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公开(公告)号：WO2009029467A3
公开(公告)日：2009-05-07
申请号：PCT/US2008073804
申请日：2008-08-21
Applicant: MOTOROLA INC , CHEN YE , EMEOTT STEPHEN P , GOSSAIN HRISHIKESH
Inventor： CHEN YE , EMEOTT STEPHEN P , GOSSAIN HRISHIKESH
CPC classification number: H04W72/1236 , H04W74/0808 , H04W84/18
Abstract: A method of communicating within a mesh network comprises scheduling a mesh access reservation time period for transmission of one or more frames by the mesh device on a channel. During the scheduled mesh access reservation time period: contention for the channel is performed with one or more other mesh devices in the network; and at least one frame is transmitted when the mesh device wins the contention. After the scheduled mesh access reservation time period: when one or more frames scheduled for transmission during the scheduled mesh access reservation time period remain to be transmitted; contention for the channel continues; and the one or more frames are transmitted when the mesh device wins the contention for the channel and when another mesh device has not reserved the channel for the time period.
Abstract translation: 在网状网络内进行通信的方法包括：调整网格接入预留时间段，用于由网络设备在信道上传输一个或多个帧。 在调度的网状接入预约时间段期间：用网络中的一个或多个其他网状设备执行信道的争用; 并且当网格装置赢得争用时，至少发送一帧。 在调度的网状接入预约时间段之后：当在调度的网状接入预留时间段期间调度传输的一个或多个帧仍然被发送时; 争夺频道的争夺仍在继续; 并且当网状设备赢得该信道的竞争并且当另一网状设备在该时间段内尚未保留该信道时，发送一个或多个帧。
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Patent Agency Ranking
公开(公告)号：WO2005112301A2
公开(公告)日：2005-11-24
申请号：PCT/US2005015469
申请日：2005-05-05
Applicant: MOTOROLA INC , WANG HUAI Y , CHEN YE , EMEOTT STEPHEN P , SIMPSON FLOYD D
Inventor： WANG HUAI Y , CHEN YE , EMEOTT STEPHEN P , SIMPSON FLOYD D
CPC classification number: H04L47/33 , H04L47/10 , H04L47/14 , H04L47/2416 , H04L47/30 , H04W28/14 , H04W52/0232 , H04W84/12 , H04W88/08 , Y02D70/00 , Y02D70/142 , Y02D70/23
Abstract: A wireless local area network (WLAN) includes an access point (102) and a mobile station (106). The mobile station can operate in a low power mode by shutting down a WLAN subsystem (204) of the mobile station. While the mobile station is in a low power mode, the access point buffers data received at the access point destined for the mobile station (706). The mobile station wakes up to initiate a service period by transmitting a trigger frame to the access point, and identifies a traffic stream to be serviced in the presently initiated service period. The access point begins transmitting response frames to the mobile station, identifying the traffic stream requested by the mobile station, and in at least one response frame, the access point may indicate the buffer status of another traffic stream associated with the mobile station to allow the mobile station to make decisions regarding data retrieval and power save state.
Abstract translation: 无线局域网（WLAN）包括接入点（102）和移动站（106）。 通过关闭移动台的WLAN子系统（204），移动台可以以低功率模式工作。 当移动站处于低功率模式时，接入点缓存在去往移动台的接入点接收的数据（706）。 移动台通过向接入点发送触发帧来唤醒起始服务周期，并且识别当前发起的服务周期中待服务的业务流。 接入点开始向移动台发送响应帧，识别移动台请求的业务流，并且在至少一个响应帧中，接入点可以指示与移动台相关联的另一业务流的缓冲状态，以允许 移动台做出关于数据检索和省电状态的决定。
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公开(公告)号：WO2008076516A3
公开(公告)日：2008-08-28
申请号：PCT/US2007082420
申请日：2007-10-24
Applicant: MOTOROLA INC , CHEN YE , VUKOVIC IVAN N
Inventor： CHEN YE , VUKOVIC IVAN N
IPC: H04L12/413
CPC classification number: H04W74/0816 , H04L43/16
Abstract: In a wireless network, a device monitors (310) at least one parameter that indicates collision status in the network; compares (320) the at least one parameter to a predefined control frame threshold that is based on a criterion other than packet-size; and activates (330) a control frame feature in the device for sending a control frame prior to data transmission, when the at least one parameter exceeds the control frame threshold. In an 802.11 network, the control frames are RTS (request-to-send) and CTS (clear-to-send) frames. The parameters being monitored can include: a number of acknowledgement and RTS frames detected from a hidden terminal, when the device is in a backoff state; a number of retransmission attempts by the device; and a collision rate determined and transmitted by another device in the wireless network to which the device intends to send data.
Abstract translation: 在无线网络中，设备监视（310）指示网络中的冲突状态的至少一个参数; 将所述至少一个参数与基于不同于分组大小的准则的预定控制帧阈值进行比较（320） 并且当所述至少一个参数超过所述控制帧阈值时，在所述设备中激活（330）用于发送数据传输之前的控制帧的控制帧特征。 在802.11网络中，控制帧是RTS（请求发送）和CTS（清除发送）帧。 被监视的参数可以包括：当设备处于退避状态时，从隐藏终端检测到的许多确认和RTS帧; 设备的重传次数; 以及由设备打算发送数据的无线网络中的另一设备确定并发送的冲突率。
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公开(公告)号：WO2009029467A4
公开(公告)日：2009-08-20
申请号：PCT/US2008073804
申请日：2008-08-21
Applicant: MOTOROLA INC , CHEN YE , EMEOTT STEPHEN P , GOSSAIN HRISHIKESH
Inventor： CHEN YE , EMEOTT STEPHEN P , GOSSAIN HRISHIKESH
CPC classification number: H04W72/1236 , H04W74/0808 , H04W84/18
Abstract: A method of communicating within a mesh network comprises scheduling a mesh access reservation time period for transmission of one or more frames by the mesh device on a channel. During the scheduled mesh access reservation time period: contention for the channel is performed with one or more other mesh devices in the network; and at least one frame is transmitted when the mesh device wins the contention. After the scheduled mesh access reservation time period: when one or more frames scheduled for transmission during the scheduled mesh access reservation time period remain to be transmitted; contention for the channel continues; and the one or more frames are transmitted when the mesh device wins the contention for the channel and when another mesh device has not reserved the channel for the time period.
Abstract translation: 一种在网状网络内通信的方法包括调度网状网络设备在一个信道上传输一个或多个帧的网状网接入预留时间段。 在预定的网状网接入预留时间段期间：网络中的一个或多个其它网状网络设备执行对信道的争用; 并且当网状设备赢得争用时传送至少一个帧。 在预定的网状网接入预约时间段之后：当在预定的网状网接入预约时间段期间调度传输的一个或多个帧保持传输时; 争夺频道继续; 并且当网状设备赢得信道的争用并且另一个网状设备在该时间段内没有预约信道时传送一个或多个帧。
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公开(公告)号：WO2004038935A3
公开(公告)日：2004-09-23
申请号：PCT/US0333758
申请日：2003-10-22
Applicant: MOTOROLA INC
Inventor： SMAVATKUL NATTAVUT , CHEN YE , EMEOTT STEPHEN
CPC classification number: H04L1/1874 , H04L1/1664 , H04W52/0216 , H04W74/06 , Y02D70/00 , Y02D70/142
Abstract: A method for accessing a wireless local area network (WLAN) channel and providing quality of service (QoS) for voice in a system supporting both voice and data services. Under the method, a communication device (302, 303) contends for a medium (channel). Upon identifying a transmit opportunity, the device transmits a voice packet to an access point (AP) (304) and polls the AP for downlink traffic. A low power implementation is feasible because the communication device can sleep, wake up to contend for the medium, transmit a voice packet to the AP, request a voice packet from the AP, transmit an acknowledgement, and go back to sleep.
Abstract translation: 一种在支持语音和数据业务的系统中访问无线局域网（WLAN）信道并提供语音服务质量（QoS）的方法。 在该方法下，通信设备（302,303）竞争媒体（信道）。 在识别发送机会时，设备向接入点（AP）发送语音分组（304），并轮询AP用于下行链路业务。 低功率实现是可行的，因为通信设备可以睡眠，唤醒以适应介质，向AP发送语音分组，从AP请求语音分组，发送确认并返回睡眠。
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公开(公告)号：WO2008076516B1
公开(公告)日：2008-10-16
申请号：PCT/US2007082420
申请日：2007-10-24
Applicant: MOTOROLA INC , CHEN YE , VUKOVIC IVAN N
Inventor： CHEN YE , VUKOVIC IVAN N
IPC: H04L12/413
CPC classification number: H04W74/0816 , H04L43/16
Abstract: In a wireless network, a device monitors (310) at least one parameter that indicates collision status in the network; compares (320) the at least one parameter to a predefined control frame threshold that is based on a criterion other than packet-size; and activates (330) a control frame feature in the device for sending a control frame prior to data transmission, when the at least one parameter exceeds the control frame threshold. In an 802.11 network, the control frames are RTS (request-to-send) and CTS (clear-to-send) frames. The parameters being monitored can include: a number of acknowledgement and RTS frames detected from a hidden terminal, when the device is in a backoff state; a number of retransmission attempts by the device; and a collision rate determined and transmitted by another device in the wireless network to which the device intends to send data.
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