公开(公告)号：US20080108300A1

公开(公告)日：2008-05-08

申请号：US11677939

申请日：2007-02-22

申请人： Chi-Wen Teng ,  Chih Lung Chang ,  Yung-Chih Liu

发明人： Chi-Wen Teng ,  Chih Lung Chang ,  Yung-Chih Liu

IPC分类号： H04H1/00

CPC分类号： H04W8/005 ,  H04W52/0216 ,  H04W52/0219 ,  Y02D70/144 ,  Y02D70/162

摘要： A system, a method, a computer program product, and a computer readable medium thereof for a new node joining a wireless network are disclosed. The wireless network system comprises a plurality of child nodes and a plurality of father nodes corresponding to those child nodes. Each of the child nodes and each of the father nodes can send a beacon packet, which comprises an absolute time index and a relative time index. When the new node collects the absolute time indexes and relative time indexes of neighboring child nodes, it can calculate the occupied absolute time index quickly and derive its absolute time index from the unoccupied absolute time index. Based on the same reason, when applying the system to a scheduling algorithm, the scheduled result can be derived quickly. In addition, the system can prevent the accumulated error. The system can be applied to a low-rate wireless network.

摘要翻译： 公开了一种用于加入无线网络的新节点的系统，方法，计算机程序产品及其计算机可读介质。 无线网络系统包括多个子节点和对应于那些子节点的多个父节点。 每个子节点和每个父节点可以发送信标分组，其包括绝对时间索引和相对时间索引。 当新节点收集相邻子节点的绝对时间索引和相对时间索引时，可以快速计算占用绝对时间索引，并从空闲绝对时间索引得到绝对时间索引。 基于相同的原因，当将系统应用于调度算法时，可以快速导出预定结果。 此外，系统可以防止累积误差。 该系统可应用于低速率无线网络。

公开(公告)号：US20080123619A1

公开(公告)日：2008-05-29

申请号：US11697135

申请日：2007-04-05

申请人： Li-Chun Ko ,  Chih Lung Chang ,  Hua-Wei Fang ,  Chih-Hung Hung

发明人： Li-Chun Ko ,  Chih Lung Chang ,  Hua-Wei Fang ,  Chih-Hung Hung

IPC分类号： H04J3/00

CPC分类号： H04W74/006 ,  H04W48/08

摘要： An apparatus, a method, and computer readable medium thereof for dividing a beacon interval are provided. The beacon interval is divided into a plurality of sub-beacon intervals in various sizes and each of the sub-beacon intervals is further divided into a predetermined number of time slots. Each of the sub-beacon intervals is similar to the beacon interval, and the difference between them is their time lengths. Therefore, more time slots in various sizes are provided. Consequently, nodes covered by the beacon interval can choose suitable time slots to transmit data to reduce waste of bandwidth. In addition, more time slots that are sub-contention free periods are provided, so transmitting data via time slots that are sub-contention access periods can be prevented. It means that collisions and data transmission can be reduced as well.

摘要翻译： 提供了一种用于划分信标间隔的装置，方法和计算机可读介质。 信标间隔被分成多个不同大小的子信标间隔，并且每个子信标间隔被进一步划分为预定数量的时隙。 每个子信标间隔与信标间隔相似，它们之间的差是它们的时间长度。 因此，提供了更多的各种尺寸的时隙。 因此，信标间隔覆盖的节点可以选择合适的时隙来传输数据，以减少带宽的浪费。 此外，提供了更多的具有子争用时段的时隙，因此可以防止通过作为子争用访问时段的时隙发送数据。 这意味着冲突和数据传输也可以减少。