System and Method for Network Uplink Measurement Based Operation Using UE Centric Sounding

摘要

Embodiments are provided for uplink measurement based mechanism and control using user equipment (UE) centric sounding signals. The mechanism provides an alternative to DL-measurement dominated system control. Based on UL-measurements at TPs, the network obtains knowledge of users' channel and timing information, traffic, and interference, and is thus able to perform better control, including TP and UE clustering and optimization, and power control and link adaptation. In an embodiment method, a TP receives one-to-one mapping information indicating a plurality of UE IDs and a plurality of sounding channels assigned to the corresponding UE IDs. When the TP detects a sounding reference signal (SRS) from a UE, the TP is able to identify the UE using the detected SRS and the one-to-one mapping information. The TP then obtains measurement information for the identified UE, enabling better control and communications for uplink and downlink transmissions between multiple TPs and the UE.

主权项

1. At a transmission point (TP), a method for uplink measurement based operation and control in a wireless network using user equipment (UE) centric sounding signals, the method comprising:
receiving, from a network, one-to-one mapping information indicating a plurality of UE identities (IDs) and a plurality of sounding channels assigned to the corresponding UE IDs; detecting a sounding reference signal (SRS) from a UE, the SRS comprising one of sounding sequences assigned to the UE; identifying the UE using the detected SRS and the one-to-one mapping information; and obtaining measurement information for deciding a scheme for communications between multiple TPs and the UE for at least one of uplink and downlink transmissions.