公开(公告)号：US07567815B2

公开(公告)日：2009-07-28

申请号：US11065054

申请日：2005-02-25

申请人： Kenzoh Nishikawa ,  Kazuyuki Sakoda

发明人： Kenzoh Nishikawa ,  Kazuyuki Sakoda

IPC分类号： H04J3/00 ,  H04J3/25

CPC分类号： H04W56/002 ,  H04W74/00 ,  H04W84/18

摘要： A communication station needs to autonomously and synchronously operate by maintaining an equal frame interval. A clock error is measured from a received packet in a wireless communication system where a beacon is transmitted periodically. This clock error is used to synchronize a counter to count the beacon's transmission/reception time and adjust a clock cycle deviation for synchronization. The synchronization is possible even in the case of restoration from a sleep state when the reference clock accuracy is poor. A period to maintain the sleep state can be extended irrespectively of the clock accuracy. It is possible to prevent desynchronization due to incorrect synchronization with an abnormal value.

摘要翻译： 通信站需要通过维持相等的帧间隔来自主地和同步地操作。 时钟误差是在周期性地发送信标的无线通信系统中从接收到的分组测量的。 该时钟错误用于同步计数器以计数信标的发送/接收时间，并调整时钟周期偏差以进行同步。 即使在参考时钟精度差的情况下从睡眠状态恢复的情况下也可以进行同步。 保持睡眠状态的时间段可随时钟精度而延长。 可以防止由于与异常值的不正确同步而导致的失步。

公开(公告)号：US20070297444A1

公开(公告)日：2007-12-27

申请号：US11724298

申请日：2007-03-15

申请人： Kenzoh Nishikawa ,  Kazuyuki Sakoda ,  Chihiro Fujita ,  Erika Saito

发明人： Kenzoh Nishikawa ,  Kazuyuki Sakoda ,  Chihiro Fujita ,  Erika Saito

IPC分类号： H04J3/16

CPC分类号： H04L1/188 ,  H04L1/1874

摘要： A resending control circuit for controlling resending of data to be sent to a sending destination, includes: a writing unit for writing resending information generated corresponding to each of data to be resent and including the resending point-in-time of the data in memory; a reading unit for reading out the resending information from the memory; and a control unit for comparing resending point-in-time included in the oldest resending information of resending information stored in the memory with current point-in-time, and executing resending processing of data corresponding to the resending information according to the comparison result.

摘要翻译： 一种用于控制重发发送到发送目的地的数据的重新发送控制电路，包括：写入单元，用于写入与要重新发送的每个数据相对应生成的重新发送的信息，并且将数据的重新发送时间包括在存储器中; 读取单元，用于从存储器读出重新发送的信息; 以及控制单元，用于将存储在存储器中的重发信息的最旧重发信息中包括的重新发送时间与当前时间点进行比较，并且根据比较结果执行与重发信息相对应的数据的重新发送处理。

公开(公告)号：US20070211764A1

公开(公告)日：2007-09-13

申请号：US11713639

申请日：2007-03-05

申请人： Chihiro Fujita ,  Kazuyuki Sakoda ,  Erika Saito ,  Kenzoh Nishikawa

发明人： Chihiro Fujita ,  Kazuyuki Sakoda ,  Erika Saito ,  Kenzoh Nishikawa

IPC分类号： H04J3/00

CPC分类号： H04L1/0053 ,  H04L1/0061 ,  H04L1/0072 ,  H04L1/0079 ,  H04L69/22

摘要： In order to reduce latency until when processing in accordance with each piece of header information included in a header is started, a communication device is provided with a header decoding portion (108) that decodes a received header; a post-decoding header output portion (112) that outputs the decoded header; a header error detection portion (106) that uses a header error-detecting code to check whether there are any errors in the header; and a post-decoding header update portion (110) that, if an error is detected in the header by the header error detection portion, updates the decoded header output by the post-decoding header output portion. The header decoding portion starts header decoding before the header error detection portion checks whether there are any errors in the header, and the post-decoding header output portion starts to output the decoded header before the header error detection portion checks for errors.

摘要翻译： 为了减少等待时间，直到根据包括在标题中的每条头信息开始处理时，通信装置具有解码接收的报头的报头解码部分（108） 后解码头部输出部分（112），其输出解码的头部; 标题错误检测部分（106），其使用报头错误检测码来检查报头中是否存在任何错误; 以及解码后头部更新部（110），其中，如果由所述头部错误检测部在所述头部中检测到错误，则更新由所述后解码头部输出部输出的解码后的头部。 标题解码部分在标题错误检测部分检查报头中是否存在任何错误之前开始报头解码，并且在标题错误检测部分检查错误之前，后解码报头输出部分开始输出解码报头。