Online Tree Node Assignment with Resource Augmentation

Given a complete binary tree of height h, the online tree node assignment problem is to serve a sequence of assignment/release requests, where an assignment request, with an integer parameter 0 ≤ i ≤ h, is served by assigning a (tree) node of level (or height) i and a release request is served by releasing a specified assigned node. The node assignments have to guarantee that no node is assigned to two assignment requests unreleased, and every leaf-to-root of the tree contains at most one assigned node. With assigned node reassignments allowed, the target of the problem is to minimize the number of assignment/reassigment, i.e., the cost, to serve the whole sequence of requests. This online tree node assignment problem is fundamental to many applications, including OVSF code assignment in WCDMA networks, buddy memory allocation and hypercube subcube allocation. Most of the previous results focus on how to achieve good performance when the same amount of resource is given to both t...

• Type: Conference
• Year: 2009
• Where: COCOON
• Authors: Joseph Wun-Tat Chan, Francis Y. L. Chin, Hing-Fung Ting, Yong Zhang
• Keywords: COCOON 2009, Combinatorics, Node Assignment, Node Assignment Problem, Tree Node Assignment