公开(公告)号：US07492753B2

公开(公告)日：2009-02-17

申请号：US10789528

申请日：2004-02-26

申请人： Nattavut Smavatkul ,  Ye Chen ,  Stephen P. Emeott ,  Floyd D. Simpson ,  Huai Y. Wang

发明人： Nattavut Smavatkul ,  Ye Chen ,  Stephen P. Emeott ,  Floyd D. Simpson ,  Huai Y. Wang

IPC分类号： H04J3/16

CPC分类号： H04W74/06 ,  H04W84/12 ,  Y02D70/142

摘要： A mobile terminal (302, 304) wakes up from a low power state and initiates a frame exchange in a wireless local area network that supports voice traffic by transmitting a polling frame (602). If the mobile terminal had voice data to send, it is included in the polling frame. In response to receiving the polling frame, the access point transmits a delay frame (604) to acknowledge receipt of the polling frame. If the access point has data for the polling mobile terminal, it transmits a non-delay frame (606) including the voice data, otherwise it transmits a null frame (702). The mobile terminal acknowledges the data from the access point (608), and goes back to sleep until the beginning of the next service interval.

摘要翻译： 移动终端（302,304）从低功率状态唤醒，并通过发送轮询帧（602）在支持话音业务的无线局域网中发起帧交换。 如果移动终端具有要发送的语音数据，则它被包括在轮询帧中。 响应于接收到轮询帧，接入点发送延迟帧（604）以确认轮询帧的接收。 如果接入点具有轮询移动终端的数据，则它发送包括语音数据的非延迟帧（606），否则发送空帧（702）。 移动终端从接入点（608）确认数据，并返回睡眠直到下一个服务间隔的开始。

公开(公告)号：US07590079B2

公开(公告)日：2009-09-15

申请号：US10677909

申请日：2003-10-02

申请人： Nattavut Smavatkul ,  Ye Chen ,  Stephen P. Emeott

发明人： Nattavut Smavatkul ,  Ye Chen ,  Stephen P. Emeott

IPC分类号： G08C17/00 ,  H04J3/16 ,  H04L12/42

CPC分类号： H04L1/1874 ,  H04L1/1664 ,  H04W52/0216 ,  H04W74/06 ,  Y02D70/142

摘要： 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.

摘要翻译： 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。

公开(公告)号：US07194261B2

公开(公告)日：2007-03-20

申请号：US10645246

申请日：2003-08-21

申请人： Stephen P. Emeott ,  Ye Chen ,  Nattavut Smavatkul

发明人： Stephen P. Emeott ,  Ye Chen ,  Nattavut Smavatkul

IPC分类号： H04Q7/20 ,  H04J3/16

CPC分类号： H04W52/0229 ,  H04W74/08 ,  H04W84/12 ,  Y02D70/142 ,  Y02D70/22 ,  Y02D70/23

摘要： 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.

摘要翻译： 无线局域网（10）的接入点（11）在服务间隔期间（21）中发送信标消息。 该信标消息在优选实施例中标识接入点将不久正在向其发送数据的那些用户单元。 在信标消息中未被识别并且没有数据本身发送到接入点的用户单元可以实现功率节省模式，直到下一个信标消息。 具有数据（例如语音信息）要发送的订户单元可以利用信标消息内容来至少估计可能的时间，当接入点将已经结束向用户单元发送信号时。 然后可以使用该估计时间来方便调度给定用户单元将竞争机会将其数据发送到接入点的时间。 在优选实施例中，该调度的传输时间可能潜在地在遵循服务间隔周期的竞争窗口期间或者在接入点的传输之后的动态争用窗口期间出现，并以服务间隔周期的结论结束。 用户单位然后可以使用中间时间来实现其选择的节能方案。

公开(公告)号：US06917598B1

公开(公告)日：2005-07-12

申请号：US10741651

申请日：2003-12-19

申请人： Stephen P. Emeott ,  Ye Chen ,  Floyd D. Simpson ,  Huai Y. Wang ,  Timothy J. Wilson ,  Nattavut Smavatkul

发明人： Stephen P. Emeott ,  Ye Chen ,  Floyd D. Simpson ,  Huai Y. Wang ,  Timothy J. Wilson ,  Nattavut Smavatkul

IPC分类号： G08C17/00 ,  H04B7/15 ,  H04L12/28 ,  H04L12/56

CPC分类号： H04W52/0225 ,  H04W28/14 ,  H04W74/06 ,  H04W84/12 ,  H04W88/08 ,  Y02D70/142 ,  Y02D70/23

摘要： 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 access 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 WLAN subsystem (712), acquiring the WLAN channel (407), and transmitting a polling frame. Upon successful receipt of the polling frame the access point prepares 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.

摘要翻译： 移动台（106）经由用于承载语音或其他时间敏感数据的接入点（102）建立实时通信链路。 移动台的WLAN子系统（204）通常保持在低功率状态。 在发起通信链路时，移动站向接入点发信号通知将使用不计划的节电传送模式（614），并且接入点保留资源以确保必要的服务质量。 移动台通过首先加电WLAN子系统（712），获取WLAN信道（407）并发送轮询帧来发起帧事务。 在成功接收到轮询帧之后，接入点准备用总的响应进行回复。 通过传输聚合缓冲区中的所有数据（包括保留数据缓冲区和未保留的数据缓冲区）开始聚合响应。 在成功接收到总响应后，移动台将WLAN子系统置于低功率状态。

公开(公告)号：US20050043027A1

公开(公告)日：2005-02-24

申请号：US10645246

申请日：2003-08-21

申请人： Stephen Emeott ,  Ye Chen ,  Nattavut Smavatkul

发明人： Stephen Emeott ,  Ye Chen ,  Nattavut Smavatkul

IPC分类号： H04L12/28 ,  H04L12/56 ,  H04W52/02 ,  H04W84/12 ,  H04Q7/20

CPC分类号： H04W52/0229 ,  H04W74/08 ,  H04W84/12 ,  Y02D70/142 ,  Y02D70/22 ,  Y02D70/23

摘要： 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.

摘要翻译： 无线局域网（10）的接入点（11）在服务间隔期间（21）中发送信标消息。 该信标消息在优选实施例中标识接入点将不久正在向其发送数据的那些用户单元。 在信标消息中未被识别并且没有数据本身发送到接入点的用户单元可以实现功率节省模式，直到下一个信标消息。 具有数据（例如语音信息）要发送的订户单元可以利用信标消息内容来至少估计可能的时间，当接入点将已经结束向用户单元发送信号时。 然后可以使用该估计时间来方便调度给定用户单元将竞争机会将其数据发送到接入点的时间。 在优选实施例中，该调度的传输时间可能潜在地在遵循服务间隔周期的竞争窗口期间或者在接入点的传输之后的动态争用窗口期间出现，并以服务间隔周期的结论结束。 用户单位然后可以使用中间时间来实现其选择的节能方案。

公开(公告)号：US20050190738A1

公开(公告)日：2005-09-01

申请号：US10789528

申请日：2004-02-26

申请人： Nattavut Smavatkul ,  Ye Chen ,  Stephen Emeott ,  Floyd Simpson ,  Huai Wang

发明人： Nattavut Smavatkul ,  Ye Chen ,  Stephen Emeott ,  Floyd Simpson ,  Huai Wang

IPC分类号： H04J3/16 ,  H04L12/28 ,  H04L12/56

CPC分类号： H04W74/06 ,  H04W84/12 ,  Y02D70/142

摘要： A mobile terminal (302, 304) wakes up from a low power state and initiates a frame exchange in a wireless local area network that supports voice traffic by transmitting a polling frame (602). If the mobile terminal had voice data to send, it is included in the polling frame. In response to receiving the polling frame, the access point transmits a delay frame (604) to acknowledge receipt of the polling frame. If the access point has data for the polling mobile terminal, it transmits a non-delay frame (606) including the voice data, otherwise it transmits a null frame (702). The mobile terminal acknowledges the data from the access point (608), and goes back to sleep until the beginning of the next service interval.

摘要翻译： 移动终端（302,304）从低功率状态唤醒，并通过发送轮询帧（602）在支持话音业务的无线局域网中发起帧交换。 如果移动终端具有要发送的语音数据，则它被包括在轮询帧中。 响应于接收到轮询帧，接入点发送延迟帧（604）以确认轮询帧的接收。 如果接入点具有轮询移动终端的数据，则它发送包括语音数据的非延迟帧（606），否则发送空帧（702）。 移动终端从接入点（608）确认数据，并返回睡眠直到下一个服务间隔的开始。

公开(公告)号：US20050136833A1

公开(公告)日：2005-06-23

申请号：US10741651

申请日：2003-12-19

申请人： Stephen Emeott ,  Ye Chen ,  Floyd Simpson ,  Huai Wang ,  Timothy Wilson ,  Nattavut Smavatkul

发明人： Stephen Emeott ,  Ye Chen ,  Floyd Simpson ,  Huai Wang ,  Timothy Wilson ,  Nattavut Smavatkul

IPC分类号： G08C17/00 ,  H04B7/15 ,  H04L12/28 ,  H04L12/56

CPC分类号： H04W52/0225 ,  H04W28/14 ,  H04W74/06 ,  H04W84/12 ,  H04W88/08 ,  Y02D70/142 ,  Y02D70/23

摘要： 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 access 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 WLAN subsystem (712), acquiring the WLAN channel (407), and transmitting a polling frame. Upon successful receipt of the polling frame the access point prepares 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.

摘要翻译： 移动台（106）经由用于承载语音或其他时间敏感数据的接入点（102）建立实时通信链路。 移动台的WLAN子系统（204）通常保持在低功率状态。 在发起通信链路时，移动站向接入点发信号通知将使用不定期的节电传送模式（614），并且接入点保留资源以确保必要的服务质量。 移动台通过首先加电WLAN子系统（712），获取WLAN信道（407）并发送轮询帧来发起帧事务。 在成功接收到轮询帧之后，接入点准备用总的响应进行回复。 通过传输聚合缓冲区中的所有数据（包括保留数据缓冲区和未保留的数据缓冲区）开始聚合响应。 在成功接收到总响应后，移动台将WLAN子系统置于低功率状态。

公开(公告)号：US20060209763A1

公开(公告)日：2006-09-21

申请号：US11085502

申请日：2005-03-21

申请人： Stephen Emeott ,  Anthony Braskich ,  Nattavut Smavatkul

发明人： Stephen Emeott ,  Anthony Braskich ,  Nattavut Smavatkul

IPC分类号： H04Q7/00

CPC分类号： H04W28/22 ,  H04L1/0002 ,  H04L1/16 ,  H04W24/00 ,  H04W88/06

摘要： Multi-mode link adaptation in a wireless communication network where a station calculates a current link quality, a minimum link quality, and an excess link quality based upon the current link quality and the minimum link quality to determine an operating mode that is related to the success or failure of recent transmissions from the station. If the calculated excess link margin is lower than a first threshold, the station operates in a first mode, otherwise in another mode. In any case, the station selects the link rate for a new transmission from the station based upon the selected mode.

摘要翻译： 在无线通信网络中的多模式链路自适应，其中站基于当前链路质量和最小链路质量来计算当前链路质量，最小链路质量和超链路质量，以确定与 来自车站的最近传输的成功或失败。 如果计算的超额链路余量低于第一阈值，则站以第一模式操作，否则在另一模式中操作。 在任何情况下，站基于所选择的模式从站点选择用于新传输的链路速率。