radio resource management (mobile communications) (RRM)

Radio Resource Management (RRM) comprises all procedures for managing radio resources in mobile networks and WLANs. According to the RRM concept, radio resources should only be allocated when they are needed. Since the field strength of radio resources is subject to large fluctuations, reallocation is occasionally required.

In mobile networks such as GSM, the range of tasks of radio resource management includes the creation, maintenance and release of control channels and traffic channels, control of control channel functions such as Associated Control Channels( ACCH), Broadcast Control Channel( BCCH), etc.), channel quality checking and handover.

In Long Term Evolution( LTE), the RRM technique reduces interference at cell edges through Intercell Interference Coordination( ICIC). Here, an autonomous scheduler ensures the optimal distribution of bandwidth and coverage resources between radio cell users. For WLANs, the 802.11kworking group has addressed this issue and developed recommendations for optimizing the maintenance and improving the performance of WLANs based on IEEE 802.11. This involves channel utilization, orchestration, transmission power management and the optimum selection of radio access points.