Methods and apparatus in a wireless communication system

摘要

The present invention relates to methods and apparatus in a RBS and a UE for reference signal (RS) measurements in an OFDM system, that enable having a configurable RS transmission bandwidth which is smaller than the system bandwidth. This allows for better interference coordination of RS, which in turn improves the UE RS measurements used for different services such as positioning. The RBS retrieves the RS transmission bandwidth, determines a RS measurement bandwidth based on this RS transmission bandwidth, and transmits the determined bandwidth to the UE. The UE receives the RS measurement bandwidth and measures the RS in a bandwidth determined based on the received measurement bandwidth and the UE capability.

主权项

1. A method implemented by a controlling network node for reference signal, RS, measurements in an OFDM system, wherein the OFDM system comprises a radio base station configured to transmit to a user equipment over a defined system bandwidth, the method comprising:
retrieving a RS transmission bandwidth for a cell, said RS transmission bandwidth being smaller than the system bandwidth, determining a RS measurement bandwidth based on the RS transmission bandwidth, and transmitting the RS measurement bandwidth to a user equipment when said RS measurement bandwidth is smaller than the RS transmission bandwidth, in order for the user equipment to measure the RS of the cell.