Calibration and tracking to assist inter-frequency measurements of LTE cell by WLAN radio

摘要

An apparatus for wireless communication obtains a first metric of a cell based on signals received by a WWAN radio tuned to a common frequency, and a second metric of the cell based on signals received by a WLAN radio tuned to the common frequency. The apparatus determines a calibration factor based on the first and second metrics, and performs cell search and cell measurement based on the calibration factor and signals received by the WLAN radio tuned to a target frequency. The common frequency may be a serving frequency of the WWAN, in which case the first and second metrics are one of frequency or power metrics and the calibration factor is one of a frequency offset and a power offset. The common frequency may also be a target frequency for inter-frequency measurements of the WWAN, in which case the calibration factor is based primarily on power measurements.

主权项

1. A method of wireless communication of a user equipment (UE), comprising:
obtaining a first metric based on signals received by a wireless wide area network (WWAN) radio tuned to a first frequency; obtaining a second metric based on signals received by a wireless local area network (WLAN) radio tuned to the first frequency; determining at least one calibration factor based on the first metric and the second metric; and performing one or more of cell search and cell measurement based on the at least one calibration factor and signals received by the WLAN radio tuned to a second frequency, wherein the second frequency is different from the first frequency upon which the at least one calibration factor is based, the at least one calibration factor comprising a frequency offset, wherein the performing the one or more of cell search and cell measurement comprises:
determining an adjusted frequency offset based on the frequency offset and one or more of the first frequency and the second frequency; andperforming the one or more of cell search and cell measurement based on the adjusted frequency offset.