# US 2020/0287752 A1 · Methods and Apparatuses for Channel Estimation for NB-PBCH in NB-LTE Systems

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2020/0287752 A1
- Document ID: US20200287752A1
- Status: Published application
- Kind: A1
- Application number: 16/825,931
- Filed: 2020-03-20
- Published: 2020-09-10
- Earliest claimed: 2015-09-02
- Assignees: Apple Inc.
- Applicants: Apple Inc.
- Inventors: Debdeep Chatterjee; Gang Xiong
- Web page: https://patentgrep.com/patent/US20200287752A1

## CPC

- H04L 25/0226: {sounding signals per se}
- H04L 5/005: {of common pilots, i.e. pilots destined for multiple users or terminals}
- H04L 25/022: {of frequency response}
- H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT}
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

Embodiments of the present disclosure describe systems, devices, and methods for channel estimation for NB-PBCH in NB-LTE systems. Various embodiments may relate to options that can be used for demodulation of the NB-PBCH by the NBLTE-UEs, and in certain embodiments may include a reference signal (RS) usable for demodulation of the NB-PBCH by the NBLTE-UEs. Other embodiments maybe described or claimed.

## Claims

### Claim 1

An apparatus, comprising:
radio frequency (RF) circuitry to receive a synchronization signal including at least one of a Narrowband Primary or Secondary Synchronization Signal (NB-PSS or NB-SSS);
baseband circuitry to identify channel estimates corresponding to a first subframe of the synchronization signal adjacent to a second subframe carrying Narrowband Physical Broadcast Channel (NB-PBCH), wherein a location of the first subframe within a set of ten consecutive subframes of a Long-Term Evolution (LTE) radio frame is cell-specific based on a Physical Cell Identity (PCID) of a transmitting cell and the set often consecutive subframes of the LTE radio frame spans a duration of 10 milliseconds (ms); and
the baseband circuitry to use the identified channel estimates to recover the NB-PBCH.