The cluster head manages to distribute resource in cluster and communication of clusters.
簇头负责管理簇内资源分配和簇之间通信。
A query register mechanism is proposed to enhance the cluster head nodes ability of resource discovery.
提出了查询登记机制，以提高簇头节点资源发现能力。
When the cluster head dies out, the network will be reestablished, and stability of the network will be reduced.
现有分簇算法一般只选取一个簇头，有簇头消亡便要重建网络，导致网络稳定性不好。
The algorithm optimizes the selecting form of the cluster head and gateway and operates with fast convergence and low cost.
该算法对簇头和网关的选取方式都进行了优化，收敛速度快，控制开销小。
Based on LEACH and PEGASIS algorithm, this paper proposes an assistant cluster head algorithm in Wireless Sensor Networks (WSN).
研究LEACH和PEGASIS协议，提出一种无线传感器网络中的助理簇头分簇算法。
In GAF, the network is divided into several grids, in which one node is chosen as the cluster head to represent the whole grid to communicate with other grids.
它将网络划分成若干个单元格，同一单元格内推举一个节点作为簇头，代替整个单元格实现通信功能。
The new algorithm chooses node which holds a higher connectivity to be a cluster head, so that the cluster head elected would be more appropriate for the topology.
改进后的算法选择连通度高的节点优先成为簇首，这样选择出的簇首更加利于簇的管理与维护。
The basic thinking of the algorithm is to prolong the lifetime of WSN, which is on the basis of the dynamic election of cluster head, the rebuilding of cluster, and the energy control.
其基本思想是在动态簇首选举和簇重组的基础上，结合能量控制过程，以更好的降低和节约节点能耗，延长网络生命期。
The new protocol finds the path to the cluster head with the minimum cost, using an algorithm similar to flooding to propagate the cost information and greedy algorithm to find the lowest cost link;
节点根据能量消耗的代价来选择至簇头的路由，通过扩散算法来广播代价消息，采用贪婪算法来选择能量消耗最小的路径；
While the timer reaches 0, the node becomes Cluster Head spontaneously.
时间率先衰减到0的节点则主动成为簇头。
The Cluster Head Delegation mechanism is the part of work of clusting, and it is an essential part of the implementation of the hierarchical and distributed network management system.
群首委任机制是分群工作的一部分，也是实现分层分布式网络管理思想的一个必不可少的环节。
Firstly, we've divided the CR users into some clusters and chosen the cluster-head nodes.
首先，我们将认知用户分为若干个簇，并选出簇头节点。
The CR users in the same cluster make a cluster decision together, and then the cluster-head nodes conduct a communication to make the global sensing decision.
在同一个簇中的认知用户，共同做出一个簇判决，之后，各个簇头节点进行通信做出全局判决。
Because energy threshold decides to when cluster-head rotation happens, the selection of threshold is critical.
因为簇头何时轮转由能量阈值决定，所以阈值的选取非常关键。
The node that can logically communicate with the nodes in other clusters has the ability to be gateway, and the set of these nodes is defined as gateway dominating set relative to cluster-head.
逻辑上能和其他簇内节点通信的节点都可以做网关，这些节点相对于簇首节点称为网关支配集。
Secondly, this thesis presents a mixed cluster-head selection algorithm (LEACH-M).
本文接着提出了能量高效的混合式簇首选举算法LEACH-M。
The vice cluster-head charges for the communication with base station.
副簇头负责与基站进行通信。
The vice cluster-head charges for the communication with base station.
副簇头负责与基站进行通信。
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