Before revision:  The rate conservation principle of Palm calculus is then used to identify the stability condition of this system, namely the condition on the interference sequence and arrival rates guaranteeing the finiteness of this minimal regime . Remarkably, the rate conservation principle also provides a closed form expression for its mean queue size.
After revision:  The rate conservation principle of Palm calculus is then used to identify the stability condition of this system, where the notion of stability is appropriately defined for an infinite dimensional process. We show that the identified condition is also necessary in certain special cases and conjecture it to be true in all cases . Remarkably, the rate conservation principle also provides a closed form expression for its mean queue size.