Methods to resolve tsf timer ambiguity of ieee 802.11e schedule element
    5.
    发明申请
    Methods to resolve tsf timer ambiguity of ieee 802.11e schedule element 有权
    解决ieee 802.11e调度元素的tsf定时器模糊度的方法

    公开(公告)号:US20070121777A1

    公开(公告)日:2007-05-31

    申请号:US10572925

    申请日:2004-09-20

    IPC分类号: G04F10/04

    CPC分类号: H04W56/00 H04W72/12

    摘要: A plurality of methods, computer program product, and apparatus that use a lower 32 bit field of a 64-bit 802.11 TSF timer, so as to encode the reference time instant without the ambiguity as to whether there the reference time is referring to a future time or a past time. According to an aspect of the present invention, the fact that the low order 32 bits of the TSF timer wraps over in about 71 minutes is exploited to remove any ambiguity in the reference times contained in the Schedule Element frame. One method employs an algorithm base on distance between two reference points to determine whether the timer has wrapped around a time period, and another method uses a delay interval or a timeout to determine whether or not the TSF timer is wrapped or unwrapped. Another method includes determining whether an absolute value of X−O is less than, or greater than or equal to maximum value M/2.

    摘要翻译: 使用64位802.11 TSF定时器的低32位字段的多种方法,计算机程序产品和装置,以便对参考时刻进行编码,而不存在关于参考时间是指未来的歧义 时间或过去的时间。 根据本发明的一个方面,利用了大约71分钟内TSF定时器的低阶32位包裹的事实来消除包含在时间表元素帧中的参考时间中的任何歧义。 一种方法采用基于两个参考点之间的距离的算法来确定定时器是否已经缠绕了一段时间,另一种方法使用延迟间隔或超时来确定TSF定时器是否被包装或解包。 另一方法包括确定X-O的绝对值是否小于或大于或等于最大值M / 2。

    Methods to resolve TSF timer ambiguity of IEEE 802.11e schedule element
    6.
    发明授权
    Methods to resolve TSF timer ambiguity of IEEE 802.11e schedule element 有权
    解决IEEE 802.11e调度元素TSF定时器模糊度的方法

    公开(公告)号:US07382694B2

    公开(公告)日:2008-06-03

    申请号:US10572925

    申请日:2004-09-20

    CPC分类号: H04W56/00 H04W72/12

    摘要: A plurality of methods, computer program product, and apparatus that use a lower 32 bit field of a 64-bit 802.11 TSF timer, so as to encode the reference time instant without the ambiguity as to whether there the reference time is referring to a future time or a past time. According to an aspect of the present invention, the fact that the low order 32 bits of the TSF timer wraps over in about 71 minutes is exploited to remove any ambiguity in the reference times contained in the Schedule Element frame. One method employs an algorithm base on distance between two reference points to determine whether the timer has wrapped around a time period, and another method uses a delay interval or a timeout to determine whether or not the TSF timer is wrapped or unwrapped. Another method includes determining whether an absolute value of X−O is less than, or greater than or equal to maximum value M/2.

    摘要翻译: 使用64位802.11 TSF定时器的低32位字段的多种方法,计算机程序产品和装置,以便对参考时刻进行编码,而不存在关于参考时间是指未来的歧义 时间或过去的时间。 根据本发明的一个方面,利用了大约71分钟内TSF定时器的低阶32位包裹的事实来消除包含在时间表元素帧中的参考时间中的任何歧义。 一种方法采用基于两个参考点之间的距离的算法来确定定时器是否已经缠绕了一段时间,另一种方法使用延迟间隔或超时来确定TSF定时器是否被打包或解包。 另一方法包括确定X-O的绝对值是否小于或大于或等于最大值M / 2。

    Method for scheduling service periods in a wireless local area network (WLAN)
    7.
    发明授权
    Method for scheduling service periods in a wireless local area network (WLAN) 有权
    在无线局域网(WLAN)中调度服务周期的方法

    公开(公告)号:US08495230B2

    公开(公告)日:2013-07-23

    申请号:US10548707

    申请日:2004-03-05

    IPC分类号: G06F15/16

    摘要: A wireless local area network (WLAN) includes at least one hybrid coordinator (HC) and at least one Quality of Service Station (QSTA). The HC transmits a schedule frame element (SEF). The WLAN also includes a clocking mechanism that sets a substantially absolute start time of a service interval. A method of synchronizing the HC and the QSTA includes transmitting a schedule element frame (SEF), and setting a substantially absolute start-time of a service interval, and a first transmitted frame element.

    摘要翻译: 无线局域网(WLAN)包括至少一个混合协调器(HC)和至少一个服务质量站(QSTA)。 HC发送调度帧元素(SEF)。 WLAN还包括设置服务间隔的基本绝对的开始时间的计时机制。 一种同步HC和QSTA的方法包括发送调度元素帧(SEF),并且设置服务间隔的基本上绝对的开始时间和第一传输帧元素。

    Method for scheduling service periods in a wireless local area network (wlan)
    8.
    发明申请
    Method for scheduling service periods in a wireless local area network (wlan) 有权
    在无线局域网(wlan)中调度服务周期的方法

    公开(公告)号:US20060171362A1

    公开(公告)日:2006-08-03

    申请号:US10548707

    申请日:2004-03-05

    IPC分类号: H04Q7/24

    摘要: A wireless local area network (WLAN) includes at least one hybrid coordinator (HC) and at least one Quality of Service Station (QSTA). The HC transmits a schedule frame element (SEF). The WLAN also includes a clocking mechanism that sets a substantially absolute start time of a service interval. A method of synchronizing the HC and the QSTA includes transmitting a schedule element frame (SEF), and setting a substantially absolute start-time of a service interval, and a first transmitted frame element.

    摘要翻译: 无线局域网(WLAN)包括至少一个混合协调器(HC)和至少一个服务质量站(QSTA)。 HC发送调度帧元素(SEF)。 WLAN还包括设置服务间隔的基本绝对的开始时间的计时机制。 一种同步HC和QSTA的方法包括发送调度元素帧(SEF),并且设置服务间隔的基本上绝对的开始时间和第一传输帧元素。