METHODS AND APPARATUS FOR DISCOVERY AND MEASUREMENT IN CELLULAR NETWORKS

摘要

Adaptation of measurement procedures for cell detection and association provide more accurate and frequent reports for use by the network, to enhance cell association. A user equipment receives, within a configured measurement bandwidth, orthogonal frequency division multiplexing symbols comprising discovery reference signals (DRS). For subframes in which the DRS are transmitted, a discovery reference signal received quality (D-RSRQ) is determined from the DRS within the received symbols as a ratio of discovery reference signal received power (D-RSRP) to carrier discovery received signal strength indicator (D-RSSI), where the D-RSRP is measured in symbols containing DRS resource elements and the D-RSSI is measured in all symbols in subframes containing the DRS. For a UE configured to also measure common reference signals, non-DRS measurements are suspended upon deactivation of a secondary cell, and measurement timing of the DRS during a deactivation period is based on a measurement timing parameter.

主权项

1. A user equipment (UE), comprising:
a transceiver configured to receive orthogonal frequency division multiplexing (OFDM) symbols within a configured measurement bandwidth, the OFDM symbols comprising discovery reference signals (DRS); and a processor configured to determine, for subframes in which the DRS are transmitted, a discovery reference signal received quality (D-RSRQ) from the DRS within the received OFDM symbols, wherein the D-RSRQ is determined as a ratio of a measure of discovery reference signal received power (D-RSRP) to carrier discovery received signal strength indicator (D-RSSI), and to report the determined ratio, wherein the D-RSRP is measured in OFDM symbols containing DRS resource elements and the D-RSSI is measured in all OFDM symbols in subframes containing the DRS.