There are several mechanisms that can be used to build security associations. The specific mechanisms for use are needed to be figured out. All the mechanisms here should be affected by the related policies. A PIB must be defined for all SLoP speakers. There must be basic sets of security policy, locatability policy, accuracy policy, and explicitness policy defined for all SLoP users, where any new relevant policy rule can be appended into a set if needed, given it is specified via the language.
Privacy policy is in fact built from the combination from the four policy sets.
The policy instance for a target should be available to the server representing the target, where the policy instance tells how a server shall serve the spatial location of the target. Server Discovery Mechanism. Transmission and Reliability Mechanism. Various transport protocols have different reliable levels. If TCP is selected, there is no need to have this extra mechanism.