LTE-Advanced

LTE-Advanced
source
Name	LTE-Advanced
Developer	3GPP
Initial release	2013
Latest release	Rel-10/Rel-11
Type	Mobile broadband standard
Predecessor	Long-Term Evolution
Successor	5G NR

LTE-Advanced LTE-Advanced is a mobile broadband standard defined by 3GPP as an evolution of Long-Term Evolution to meet the requirements of the International Telecommunication Union for IMT-Advanced. It introduced enhancements to spectral efficiency, peak data rates, and latency to support operators such as AT&T, Vodafone Group, and China Mobile in dense urban and rural deployments. Major equipment vendors including Ericsson, Nokia, Huawei, and Samsung implemented features from 3GPP Release 10 and Release 11 to enable carrier aggregation, higher-order MIMO, and advanced radio resource management.

Overview

LTE-Advanced was standardized to satisfy the International Telecommunication Union's IMT-Advanced requirements and to extend capabilities of Long-Term Evolution used by carriers like Verizon Communications and T-Mobile US. The specification is part of the 3GPP roadmap alongside other releases such as Release 8, Release 9, and later Release 12. Operators including Deutsche Telekom and Orange S.A. pursued network upgrades to support traffic growth driven by services from companies like Netflix, YouTube, and Amazon Prime Video.

Technical Features

Key technical features include carrier aggregation, higher-order multiple-input multiple-output implemented in hardware by vendors such as Qualcomm and Intel Corporation, and coordination techniques like enhanced inter-cell interference coordination used in trials by SK Telecom and KT Corporation. The standard specifies support for up to 5 aggregated component carriers to reach bandwidths comparable to early deployments by Nokia Siemens Networks and Alcatel-Lucent. Advanced modulation schemes up to 256-QAM and support for relay nodes appeared in testbeds run by Telefónica and research groups at Massachusetts Institute of Technology and University of Cambridge.

Architecture and Deployment

The architecture extends the Evolved Packet Core and the Evolved UMTS Terrestrial Radio Access Network with new node types and logical interfaces used by operators such as Rogers Communications and Telstra. Deployments ranged from macrocell-centric rollouts in collaboration with vendors like ZTE to heterogeneous networks combining small cells promoted by Qualcomm and trials in partnership with universities including Stanford University. Spectrum strategies involved allocations in bands governed by regulatory authorities like the Federal Communications Commission and the European Commission, and spectrum refarming undertaken by incumbents including NTT Docomo.

Performance and Capacity

LTE-Advanced increased peak downlink rates toward targets set by ITU-R through techniques demonstrated in field tests by Ericsson and Huawei. Network capacity gains were reported by operators such as SFR and British Telecom, with improved cell-edge throughput via coordinated multipoint transmission trials involving research consortia like 3GPP working groups and academic partners including Imperial College London. Operators deployed carrier aggregation across contiguous and non-contiguous bands allocated by regulators including the Australian Communications and Media Authority.

Interoperability and Standards

Interoperability testing occurred in events organized by bodies such as the Global Certification Forum and partnerships among chipset makers like MediaTek and Broadcom to ensure device compatibility for vendors including Apple Inc. and Samsung Electronics. Standardization documents in 3GPP Releases 10–12 defined conformance and RF requirements referenced by certification programs run by testing houses such as Keysight Technologies and Anritsu Corporation.

Use Cases and Adoption

Adoption supported enhanced mobile broadband services used by platforms such as Spotify and Skype, fixed wireless access initiatives in regions served by Reliance Jio and MTN Group, and enterprise broadband solutions deployed by carriers like Telefonica Brasil. Vertical market pilots included automotive telematics projects undertaken by manufacturers like Toyota and BMW and public-safety communications coordinated with agencies such as Federal Emergency Management Agency.

Security and Management

Security mechanisms build on the EPS-AKA framework and IPsec corridors implemented in cores operated by companies such as Cisco Systems and Juniper Networks. Network management and orchestration leveraged standards from organizations like ETSI and initiatives such as Self-Organizing Network trials run by Vodafone and China Telecom to automate configuration, fault management, and performance monitoring.

Category:Mobile broadband standards Category:3GPP standards