Broadcom Corporation

Renesas Mobile Corporation

Kennett Aschan

Tero Henttonen

An active reception period (active time) of a power saving pattern (DRX) is masked to a measurement period (ABS) of a serving or neighbor cell interference mitigation pattern (eICIC) such that the masked active reception period repeatedly coincides with the measurement period. Then the masked active reception period is utilized for communicating resource allocations (PDCCHs) between a serving cell (eNB) and a user equipment (UE). In various embodiments: the masking is done without shortening a sleep opportunity (DRX opportunity) of the power saving pattern; the masking is implemented by delaying an on-duration start time of the active reception period; the on-duration start time is controlled by a timer which runs only during measurement periods of the interference mitigation pattern, or by applying a second offset generated by the UE in addition to applying a first offset configured by the serving cell; and the masking is by adopting a default power saving pattern.

Coordination of DRX and eICIC

A user equipment UE stores a first list of private cells to which the apparatus is authorized to access (e.g., a CSG whitelist). While under control of a serving first cell, the UE determines from a transmission received from a neighbor second cell a physical cell identity PCI of the neighbor cell, then compares the determined PCI to a stored second list to determine whether the UE is authorized to access the neighbor cell. In one embodiment the second list maps PCIs to CSG IDs; if the determined PCI matches one in the second list the CSG ID is selected and it that matches one in the first list the UE is authorized access. In another embodiment the second list is only the PCI of those CSG cells on the UE's first list that are within the area served by the serving cell, so if the determined PCI matches one in the second list the UE is authorized access.

Growing community of inventors

Helsinki, Finland

Kennett Aschan