LTE-M

doi:10.1016/B978-0-08-102902-2.00005-4

LTE-M

2020-01-01

1

PRE

AI

DOI：10.1016/B978-0-08-102902-2.00005-4

Original

Original request for help

Save

Abstract

En 中文

In this chapter, we describe the Long-Term Evolution for Machine-Type Communications (LTE-M) technology with an emphasis on how it is designed to fulfill the objectives that LTE-M targets, namely achieving low device cost, deep coverage and long battery lifetime while maintaining capacity for a large number of devices per cell, with performance and functionality suitable for both low-end and mid-range applications for the Internet of Things. Section 5.1 describes the background behind the introduction of LTE-M in the Third Generation Partnership Project (3GPP) specifications and the design principles of the technology. Section 5.2 focuses on the physical channels with an emphasis on how these channels were designed to fulfill the objectives that LTE-M was intended to achieve. Section 5.3 covers LTE-M procedures in idle and connected mode, including all activities from initial cell selection to completing a data transfer. The idle mode procedures include the initial cell selection, which is the procedure that a device has to go through when it is first switched on or is attempting to select a new cell to camp on. Idle mode activities also include acquisition of system information, paging, random access, and multicast. Descriptions of some fundamental connected mode procedures include scheduling, power control, mobility, and positioning. Both the fundamental functionality introduced in 3GPP Release 13 and the improvements introduced in Release 14 and Release 15 are covered. Finally, coexistence between LTE-M and Fifth Generation (5G) New Radio (NR) is presented in Section 5.4. The performance of LTE-M including its fulfillment of 5G mMTC requirements is covered in Chapter 6.

LTE-M

Abstract

AI Summary

Journal

Organization