US 2019/0357159 A1 · BROADCAST CHANNEL TRANSMISSION AND DEMODULATION

Abstract

A method and apparatus are disclosed for demodulating a NR-PBCH signal. The method may comprise receiving a primary SS and an SSS. The received SSS signal may be used as a reference signal to detect demodulation reference signals of the NR-PBCH. These demodulation reference signals may be interleaved with data on the NR-PBCH. In one method, the NR-PBCH DMRS are associated with an SSB index in an effort to improve randomization in the synchronization process. The NR-PBCH payload may be demodulated using the PSS and/or SSS and the DMRS. In one embodiment, the NR-PBCH DMRS may mapped to DMRS REs on a frequency first and time second mapping basis.

Claims20

Dependent claims

A method for demodulating a New Radio (NR) Physical Broadcast Channel (PBCH) (NR-PBCH) by a wireless transmit/receive unit (WTRU), the method comprising:

demodulating the NR-PBCH, using a demodulation reference signal (DMRS), in at least a second, in time, OFDM symbol, and a fourth, in time, OFDM symbol of a synchronization signal block (SSB), wherein the DMRS is located in same subcarriers in the second, in time, OFDM symbol and the fourth, in time, OFDM symbol and is interleaved in frequency with NR-PBCH payload;
wherein the SSB includes a primary synchronization signal (PSS) in a first, in time, OFDM symbol of the SSB and a secondary synchronization signal (SSS) in a third, in time, OFDM symbol of the SSB.

Dependencies are inferred from the claim text.

Facts

Application

16/482,871Filed 26 Jan 2018

Priority

3 Feb 2017

Published

21 Nov 2019

Term ends

Not estimatedThe source records don’t support an estimate.

Classification15 codes

H04W 56/001
Synchronisation arrangements: synchronization between nodes
H04J 11/0073
Cell search, i.e. determining cell identity [cell-ID]: acquisition of primary synchronisation channel, e.g. detection of cell-ID within cell-ID group
H04J 11/0076
Cell search, i.e. determining cell identity [cell-ID]: acquisition of secondary synchronisation channel, e.g. detection of cell-ID group
H04L 1/0071
Systems characterized by the type of code used: use of interleaving

Family

Application62/454,621Us provisional application · filed 3 Feb 2017

Application62/500,702Us provisional application · filed 3 May 2017

Application62/519,751Us provisional application · filed 14 Jun 2017

Application62/543,155Us provisional application · filed 9 Aug 2017

US 11,943,724 B2Related patent

US 2019/0357159 A1This patent

From the US filing history. Foreign family members aren’t listed.

Broadcast channel transmission and demodulation

Life of this patent

Broadcast channel transmission and demodulation

Life of this patent

Abstract

Claims20