Flexible re-use for dynamic channel assignment in mobile radio systems

Cognitive Radio Resource Management

“…Simulations in Reference [36] showed that FRU can effectively improve system capacity, especially for users with portable units. If there is no available channel, the call is blocked.…”

Prioritized channel borrowing without locking: a channel sharing strategy for cellular communications

“…Since the dimensions are reduced, the number of states is decreased greatly and computation time is saved. We substitutep,(O, C -U ) in (14) to findp,. To use (14), L,,+1 groups of flow balance equations for v from zero to L,, must be solved.…”

“…We substitutep,(O, C -U ) in (14) to findp,. To use (14), L,,+1 groups of flow balance equations for v from zero to L,, must be solved. However, the number of groups of equations to be solved can be reduced greatly.…”

“…A borrowed channel can be used in an inner cell. A similar cell structure can be found in re-use partition (or overlay-underlay) [ 131, [14]. In re-use partition, channels are divided into two groups, the first group is used with a smaller re-use pattern while the second group is used with a large reuse pattern.…”

An advanced air interface for integrated digital mobile communications systems

“…An other approach is for the upper station to actively supervise BS frequencies and control all channel assignments. This is called dynamic channel assignment (8) and can realize efficient frequency utilization. Unfortunately, it leads to channel overloading and / or an explosive increase in the number of control signals passing between MSC and BSs.…”