Cell ID management for discovery reference signals for small cells in LTE (R)

摘要

Heterogeneous networks incorporate various small cells such as femtocells and picocells in addition to macrocells. Existing signals (eg, PSS and SSS) configured as discovery reference signals (DRS) may not be sufficient for a UE to discover different cells in a heterogeneous network. The disclosed aspects provide an approach for managing cell IDs for various DRS configurations to improve UE discovery of different cells in heterogeneous networks. In an aspect, the UE receives a first reference signal (eg, based on PCI) configured to perform base station measurements by the UE. The UE further receives one or more second reference signals configured for measurement by the UE (eg, based on a VCI associated with the PCI). The UE performs base station measurements based on the first reference signal and one or more second reference signals.