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公开(公告)号：US09210656B2
公开(公告)日：2015-12-08
申请号：US13563157
申请日：2012-07-31
CPC分类号： H04W52/0216 , H04W76/28 , Y02D70/142
摘要： The listen interval of a WLAN client is selected to have one of a plurality of values, including a start listen interval (SLI) and one or more longer listen intervals (e.g., transient listen interval (TLI), maximum listen interval (MLI)). The listen interval is set to SLI in response to (1) detecting that an applications processor of the WLAN client is in an awake state, (2) detecting transmit/receive activity on the wireless link, and (3) failing to detect an expected beacon signal on the wireless link. If the listen interval is set to MLI (or TLI) and the WLAN client fails to detect an expected beacon signal (beacon miss), the listen interval is temporarily set to SLI. If the WLAN client then detects an expected beacon signal before detecting a predetermined number of consecutive beacon misses, the listen interval is immediately returned to the original listen interval MLI (or TLI).
摘要翻译： 选择WLAN客户端的监听间隔以具有多个值中的一个，包括开始监听间隔（SLI）和一个或多个更长监听间隔（例如，暂时监听间隔（TLI），最大监听间隔（MLI））） 。 响应于（1）检测到WLAN客户端的应用处理器处于唤醒状态，（2）检测无线链路上的发送/接收活动，并且（3）未能检测到预期的 信标信号在无线链路上。 如果监听间隔设置为MLI（或TLI），并且WLAN客户端无法检测到预期信标信号（信标未命中），则监听间隔将临时设置为SLI。 如果WLAN客户端在检测到预定数量的连续信标未命中之前检测到预期的信标信号，则监听间隔立即返回到原始监听间隔MLI（或TLI）。
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2.发明授权Method and apparatus for reducing power consumption in a wireless communication device 有权用于降低无线通信设备中的功耗的方法和装置公开(公告)号：US08797911B2
公开(公告)日：2014-08-05
申请号：US13401143
申请日：2012-02-21
申请人： Linhai He , Rashid A. Attar , Christopher G. Lott , Donna Ghosh , Chaitanya Mannemala , Sunit Bhatia , Sudheer Konda , Gopal Chillariga
发明人： Linhai He , Rashid A. Attar , Christopher G. Lott , Donna Ghosh , Chaitanya Mannemala , Sunit Bhatia , Sudheer Konda , Gopal Chillariga
CPC分类号： H04W52/0241 , H04W52/0232 , H04W52/0258 , H04W88/08 , Y02D70/1224 , Y02D70/1242 , Y02D70/142
摘要： A wireless communications power saving method and apparatus is provided. The method includes establishing a circular buffer configured to maintain a number of most recently encountered frame delay times and waiting a frame delay time after receiving a further frame before the station enters a power save state. Frame delay time is a period equal to a largest most recently encountered frame delay period in the circular buffer. The method further determines, at a station, a dormancy time based on a number of data frames received since the station transitioned from an inactive mode to an active mode, a packet transmission rate, and a data frame time interval representing time between data frames received at the station, and causes the station to switch to a further inactive mode if a next packet is not received within the dormancy time after receipt of a previous packet.
摘要翻译： 提供一种无线通信省电方法和装置。 该方法包括建立循环缓冲器，该循环缓冲器被配置为保持最近遇到的帧延迟时间的数量，并且在站进入省电状态之前在接收到另一帧之后等待帧延迟时间。 帧延迟时间是等于循环缓冲器中最大遇到的最大帧延迟周期的周期。 该方法还在一个站点基于从站从非活动模式转换到活动模式，分组传输速率和表示接收到的数据帧之间的时间的数据帧时间间隔，接收到的数据帧数，在一个站处确定休眠时间 并且如果在接收到先前分组之后的休眠时间内没有接收到下一分组，则使得站切换到另一非活动模式。
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3.发明申请METHOD AND APPARATUS FOR REDUCING POWER CONSUMPTION IN A WIRELESS COMMUNICATION DEVICE 有权一种无线通信设备降低功耗的方法和装置公开(公告)号：US20130215788A1
公开(公告)日：2013-08-22
申请号：US13401143
申请日：2012-02-21
申请人： Linhai He , Rashid A. Attar , Christopher G. Lott , Donna Ghosh , Chaitanya Mannemala , Sunit Bhatia , Sudheer Konda , Gopal Chillariga
发明人： Linhai He , Rashid A. Attar , Christopher G. Lott , Donna Ghosh , Chaitanya Mannemala , Sunit Bhatia , Sudheer Konda , Gopal Chillariga
CPC分类号： H04W52/0241 , H04W52/0232 , H04W52/0258 , H04W88/08 , Y02D70/1224 , Y02D70/1242 , Y02D70/142
摘要： A wireless communications power saving method and apparatus is provided. The method includes establishing a circular buffer configured to maintain a number of most recently encountered frame delay times and waiting a frame delay time after receiving a further frame before the station enters a power save state. Frame delay time is a period equal to a largest most recently encountered frame delay period in the circular buffer. The method further determines, at a station, a dormancy time based on a number of data frames received since the station transitioned from an inactive mode to an active mode, a packet transmission rate, and a data frame time interval representing time between data frames received at the station, and causes the station to switch to a further inactive mode if a next packet is not received within the dormancy time after receipt of a previous packet.
摘要翻译： 提供一种无线通信省电方法和装置。 该方法包括建立循环缓冲器，该循环缓冲器被配置为保持最近遇到的帧延迟时间的数量，并且在站进入省电状态之前在接收到另一帧之后等待帧延迟时间。 帧延迟时间是等于循环缓冲器中最大遇到的最大帧延迟周期的周期。 该方法还在一个站点基于从站从非活动模式转换到活动模式，分组传输速率和表示接收到的数据帧之间的时间的数据帧时间间隔，接收到的数据帧数，在一个站处确定休眠时间 并且如果在接收到先前分组之后的休眠时间内没有接收到下一分组，则使得站切换到另一非活动模式。
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公开(公告)号：US20140036746A1
公开(公告)日：2014-02-06
申请号：US13563157
申请日：2012-07-31
IPC分类号： H04W52/02
CPC分类号： H04W52/0216 , H04W76/28 , Y02D70/142
摘要： The listen interval of a WLAN client is selected to have one of a plurality of values, including a start listen interval (SLI) and one or more longer listen intervals (e.g., transient listen interval (TLI), maximum listen interval (MLI)). The listen interval is set to SLI in response to (1) detecting that an applications processor of the WLAN client is in an awake state, (2) detecting transmit/receive activity on the wireless link, and (3) failing to detect an expected beacon signal on the wireless link. If the listen interval is set to MLI (or TLI) and the WLAN client fails to detect an expected beacon signal (beacon miss), the listen interval is temporarily set to SLI. If the WLAN client then detects an expected beacon signal before detecting a predetermined number of consecutive beacon misses, the listen interval is immediately returned to the original listen interval MLI (or TLI).
摘要翻译： 选择WLAN客户端的监听间隔以具有多个值中的一个，包括开始监听间隔（SLI）和一个或多个更长监听间隔（例如，暂时监听间隔（TLI），最大监听间隔（MLI））） 。 响应于（1）检测到WLAN客户端的应用处理器处于唤醒状态，（2）检测无线链路上的发送/接收活动，并且（3）未能检测到预期的 信标信号在无线链路上。 如果监听间隔设置为MLI（或TLI），并且WLAN客户端无法检测到预期信标信号（信标未命中），则监听间隔将临时设置为SLI。 如果WLAN客户端在检测到预定数量的连续信标未命中之前检测到预期的信标信号，则监听间隔立即返回到原始监听间隔MLI（或TLI）。
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5.发明申请REFERENCE TBTT ESTIMATION ALGORITHM FOR SMART POWER SAVING ON WLAN CLIENT 审中-公开参考TBTT估计算法，用于WLAN客户端上的智能节电公开(公告)号：US20130034004A1
公开(公告)日：2013-02-07
申请号：US13563192
申请日：2012-07-31
CPC分类号： H04W52/0216 , H04W52/0229 , Y02D70/142
摘要： A WLAN client receives a plurality of beacons that include timestamp values that indicate when the beacons were sent by an access point (AP). The WLAN client calculates a beacon drift value for each of the plurality of received beacons in response to the timestamp values and known physical layer characteristics associated with the WLAN client. The WLAN client selects one of the calculated beacon drift values that represents a minimum beacon drift, and uses this selected beacon drift value (i.e., golden reference target beacon transmission time (RTBTT) estimate) to control the wakeup timing of the WLAN client. The golden RTBTT estimate is updated if a subsequently received beacon exhibits a shorter beacon drift value. If the wakeup wait period of the WLAN client exceeds a predetermined threshold for each of a plurality of received beacons, the golden RTBTT is recalculated to account for the associated increased beacon drift.
摘要翻译： WLAN客户端接收多个信标，其包括指示信标何时由接入点（AP）发送的时间戳值。 WLAN客户端响应于与WLAN客户端相关联的时间戳值和已知物理层特性，计算多个接收的信标中的每一个的信标漂移值。 WLAN客户端选择表示最小信标漂移的所计算的信标漂移值中的一个，并且使用该选择的信标漂移值（即，黄金参考目标信标发送时间（RTBTT）估计）来控制WLAN客户端的唤醒定时。 如果随后接收的信标呈现较短的信标漂移值，则更新黄金RTBTT估计。 如果WLAN客户端的唤醒等待时间段对于多个接收到的信标中的每一个超过了预定阈值，则重新计算黄金RTBTT以考虑相关联的增加的信标漂移。
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