This paper describes a new framework of policy control sensor networks. Sensor networks ate shared by various applications, and have many nodes. Hence, sensor networks need to have ability to accept various applications, and to deploy application modules to nodes easily. Sensor nodes should have appropriate application modules. Afi.amework that is based on VPC on KODAM enables sensor nodes to have --qpropriate modules by assignment rules in a policy. When users only pur application policies to sensor neiworks, sensor nodes propagate the policies and perform appropriate roles in the applications. This paper also shows that sensor networks with policies change behavior corresponding to detected active W I D tags as an example.

Constraint-based Routed Label Distribution Protocol (CR-LDP) is one of well-known traffic engineering technologies in MPLS networks. CR-LDP is a signaling protocol for establishing a Label Switching Path (LSP) and has a function such that CR-LDP coordinates LSP's that make a conflict (for example, the LSP's share a link).However CR-LDP coordinates such LSP's only. Therefore such coordinating (i.e. rerouting a LSP) would make some other conflicts (i.e. the rerouted LSP would share a link with other LSP's).This paper proposes a new traffic engineering method which is called "Multiagent-based Path Rerouting Method (MPRM)." When a conflict occurs, MPRM coordinates all LSP's without concerning the conflict in order to avoid new conflicts caused by dissolving the conflict. For avoidance of new conflicts, MPRM performs not only rerouting LSP's that make the conflict but also rerouting some LSP's that make no conflicts. This paper also evaluates basic performance of CR-LDP and MPRM.

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