发明名称 |
System and method for performing clock synchronization of nodes connected via a wireless local area network |
摘要 |
A clock synchronization method and apparatus is disclosed for use in a communication system including a plurality of wireless nodes communicatively coupled via a wireless network, each of the plurality of wireless nodes having a local time base, and one of the plurality of wireless nodes being designated as a master node having a master time base which serves as a master clock against which the local time bases are synchronized. The clock synchronization method includes the steps of periodically transmitting synchronization frames to the plurality of non-master nodes so as to adjust the slave clocks associated with the respective non-master nodes. The synchronization frames are distributed from the master node at near-periodic intervals and includes a cycle time value that corresponds to the end of the previously transmitted synchronization frame. The slave clocks (i.e., non-master nodes) receiving the synchronization frame determine the cycle time value at the point of reception of the synchronization frame and adjusts their clocks by calculating a difference value between the received cycle time and a previously saved local cycle time value.
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申请公布号 |
US7120092(B2) |
申请公布日期 |
2006.10.10 |
申请号 |
US20020289758 |
申请日期 |
2002.11.07 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N. V. |
发明人 |
DEL PRADO PAVON JAVIER;NANDAGOPALAN SAI SHANKAR;CHOI SUNGHYUN;SATO TAKASHI;BENNET JEFF |
分类号 |
G04C11/00;H04J3/06;H04L7/00 |
主分类号 |
G04C11/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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