St-ericsson Sa

Intel Deutschland Gmbh

Deepak Varshney

Tianyan Pu

Sajal Kumar Das

Suyog Moogi

Leela Srikar Muppirisetty

In one implementation, a radio is tuned to a frequency and bandwidth such that it can accommodate a plurality of frequency channels of a plurality of RATs. Radio samples are acquired by the radio and stored to an input memory. The RAT specific cell search further includes performing a RAT specific frequency scan on the set of radio samples to detect candidate frequencies for each RAT. Performing the RAT specific frequency scan may comprise dividing the set of radio samples into the plurality of frequency channels for each RAT, sensing the energy for each channel for each RAT, determining a set of frequency channels having highest energy for each RAT and attempting to detect candidate frequencies having highest energy for each RAT.

Method and related mobile device for cell search in multi radio access technology systems

The present subject matter discloses a method for antenna activity detection in multi-antenna communication devices. In one embodiment, the method comprises computing a received signal strength indicator (RSSI) value for each of a plurality of antennas based on a sampled data associated with each of the antennas. The RSSI values may then be analyzed to identify an antenna having a highest RSSI value as a primary antenna and one or more antennas having the RSSI value less than the highest RSSI value as auxiliary antennas. Further, an RSSI difference for each of the auxiliary antennas is calculated and compared with a first threshold value to ascertain one or more potentially inactive antennas from among the auxiliary antennas. The potentially inactive antennas may then be further analyzed to identify one or more inactive antennas based at least in part on the RSSI value.

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Dresden, Germany

Deepak Varshney