US 11,991,529 B2
Utilizing NR guard band for efficient deployment of LTE-M in coexistence with NR
Mohammad Mozaffari, San José, CA (US); Yi-Pin Eric Wang, Fremont, CA (US); and Johan Bergman, Stockholm (SE)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Appl. No. 17/290,903
Filed by TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
PCT Filed Nov. 1, 2019, PCT No. PCT/IB2019/059406
§ 371(c)(1), (2) Date May 3, 2021,
PCT Pub. No. WO2020/089859, PCT Pub. Date May 7, 2020.
Claims priority of provisional application 62/755,194, filed on Nov. 2, 2018.
Prior Publication US 2021/0385663 A1, Dec. 9, 2021
Int. Cl. H04W 16/14 (2009.01); H04L 5/00 (2006.01); H04L 27/26 (2006.01)
CPC H04W 16/14 (2013.01) [H04L 5/0092 (2013.01); H04L 27/26025 (2021.01); H04L 27/2607 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method for communicating in a wireless communication network, the method comprising:
determining candidate locations for a Long Term Evolution-Machine Type Communication (LTE-M) carrier from among multiple LTE carrier locations based on where subcarriers of a New Radio (NR) carrier align with subcarriers of the LTE-M carrier;
determining, from the candidate locations, an LTE-M carrier center such that at least a portion of the LTE-M carrier deploys in a guard band of the NR carrier; and
transmitting or receiving using the LTE-M carrier according to the LTE-M carrier center, wherein the LTE-M carrier center is positioned relative to the center frequency C of the NR carrier represented by:
C=15k+7.5 kHz,
where k is an index of an NR subcarrier on which the LTE-M carrier center is able be placed, and
wherein the minimum L and maximum U frequencies of the LTE-M carrier, relative to the NR carrier center frequency C are given by:

OG Complex Work Unit Math
where BLT represents operational bandwidth for LTE-M.