Distributed virtual backbone construction in sensor networks with asymmetric links

Abstract

In this paper, we study the problem of distributed virtual backbone construction in sensor networks, where the coverage area of nodes are disks with different radii. This problem is modeled by the construction of a minimum connected dominating set (MCDS) in geometric k-disk graphs. We derive the size relationship of any maximal independent set (MIS) and MCDS in geometric k-disk graphs, and apply it to analyze the performances of two distributed connected dominating set (CDS) algorithms we propose in this paper. These algorithms have bounded performance ratio and low communication overhead. To the best of our knowledge, the results reported in this paper represent the state-of-the-art.

An energy efficient MCDS construction algorithm for wireless sensor networks

“…Except for the Alzoubi's and Thai's algorithms, there are also many MIS based algorithms such as [16][17][18][19][20][21][22][23], which also mainly have two stages and the CDS construction algorithms have different criterions. In [16][17][18], the criterion is the node degree.…”

“…In [20], the criterion is the weight of node, and the weight is composed of the node degree and the battery power. In [21,22], the criterion is the node id. The node with the largest id will become a dominator in [21], while the node with the smallest id will become a dominator in [22].…”

“…In [21,22], the criterion is the node id. The node with the largest id will become a dominator in [21], while the node with the smallest id will become a dominator in [22]. In [23], Kim et al proposed two approximation MCDS construction algorithms called D-CDS-UBG and C-CDS-UBG respectively.…”

“…According to [22], the black nodes in CDS have two kinds of coverage types. The first type is that a black node is not covered by another black node when it selects its children black nodes.…”

“…In order to compare the size of CDS, we involve other algorithms, which are the second algorithm of Xiang's (denoted by XSA) in [22] and the second algorithm of Thai's (denoted by TSA) in [14]. We adopt the LEACH protocol to compare the energy efficient of E-MCDS against.…”