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1. (WO2018103985) METHOD AND APPARATUS FOR TRANSMISSION IN A WIRELESS COMMUNICATION NETWORK

Pub. No.:    WO/2018/103985    International Application No.:    PCT/EP2017/078565
Publication Date: Fri Jun 15 01:59:59 CEST 2018 International Filing Date: Thu Nov 09 00:59:59 CET 2017
IPC: H04L 5/00
H04L 27/26
H04W 4/00
H04W 72/04
H04W 72/12
Applicants: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Inventors: NILSSON, Thomas
KAPETANOVIC, Dzevdan
WILHELMSSON, Leif
Title: METHOD AND APPARATUS FOR TRANSMISSION IN A WIRELESS COMMUNICATION NETWORK
Abstract:
A node in a wireless communication network uses a modified data-to-subcarrier mapping on at least a selective basis, wherein the modified mapping effectively extends the cyclic prefix (CP) of a transmission targeted to a given receiver without extending the CP of the Orthogonal Frequency Division Multiplex (OFDM) symbol in which the transmission is conveyed. This approach allows, for example, the node to use a first or normal data-to-subcarrier mapping for transmissions that are targeted to receivers that do not need an effective increase of the CP length, while using the modified mapping for those receivers that need a longer effective CP length, e.g., because of receiver type or channel conditions.