The mobile client may selectively to intercept the channel by the index broadcast, the average cost can be reduced through the establishment base on the data accessing probability of the index tree.
采用索引广播的方式可以使移动设备选择性地侦听信道，通过建立基于数据访问概率的索引树，以降低平均访问代价。
In the data broadcast, the visits probability of the data record is various, therefore the index tree may be built through visit probability.
在数据广播中，数据记录被访问的概率各不相同，因此可以通过访问概率建立索引树。
Due to the data access skew, index technology based on data access probability is proposed. At last ord algorithm is proposed to create optimal broadcast sequence according to given index tree.
针对数据库中数据访问的倾斜性，文章提出建立基于数据访问概率的索引技术，并给出了ORD算法，它可以根据给定的索引树创建最优的广播序列。
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