Patent ID: 8095143

Claim:
A method in a radio network that includes a device, the method comprising: obtaining, via the device, a service change associated with a cell in the radio network; identifying, via the device, helper cells in the radio network that need new random access channel (RACH) parameters due to the service change; determining, via the device, a RACH parameters configuration for the helper cells; configuring, via the device, the helper cells with the determined RACH parameters configuration; receiving information indicating that the cell in the radio network is out of service; and triggering a RACH parameters reconfiguration for a particular helper cell based on the received information, where the triggering of a RACH parameters reconfiguration comprises: receiving neighbor cell relation lists associated with cells adjacent to the out of service cell; receiving mobility statistics associated with the out of service cell; determining the particular helper cell based on the neighbor cell relation lists and the mobility statistics; receiving a RACH parameters configuration for the out of service cell; and determining reconfigured RACH parameters, corresponding to extended coverage of the particular helper cell, based on the RACH parameters configuration and the determined helper cell.