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1. (WO2018060974) CDM8 BASED CSI-RS DESIGNS FOR MIMO

Pub. No.:    WO/2018/060974    International Application No.:    PCT/IB2017/056048
Publication Date: Fri Apr 06 01:59:59 CEST 2018 International Filing Date: Sun Oct 01 01:59:59 CEST 2017
IPC: H04L 5/00
Applicants: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Inventors: MURUGANATHAN, Siva
GAO, Shiwei
HARRISON, Robert Mark
Title: CDM8 BASED CSI-RS DESIGNS FOR MIMO
Abstract:
A network node, wireless device, base station, user equipment and corresponding methods are provided. The network node includes processing circuitry configured to: select a first set and second set of reference signal resources in a subframe and aggregate the first set and second set of reference signal resources in the subframe to form a code division multiplexing, CDM, aggregation configuration. The first set and second set of reference signal resources in the subframe satisfy a temporal criterion such that any two resource elements in the first set and second set of reference signal resources have up to a maximum time separation of six OFDM symbols. The first set and second set of reference signal resources in the subframe satisfy a frequency criterion such that any two resource elements in the first set and second set of reference signal resources have up to a maximum frequency separation of six subcarriers.