Paper Info
Title
Dynamic Spectrum Refarming with Overlay for Legacy Devices
Abstract
The explosive growth in data traffic is resulting in a spectrum crunch forcing many wireless network operators to look towards refarming their 2G spectrum and deploy more spectrally efficient Long Term Evolution (LTE) technology. However, mobile network operators face a challenge when it comes to spectrum refarming because 2G technologies such as Global System for Mobile (GSM) is still widely used for low bandwidth machine-to-machine (M2M) devices. M2M devices typically have long life cycles, e.g. smart meters, and it is expensive to migrate these devices to newer technology since a truck roll will typically be required to the site where a device is deployed. Furthermore, with cost of 2G modules several times less than that of LTE, even newly deployed M2M devices tend to adopt 2G technology. Nevertheless, operators are keen to either force their 2G M2M customers to migrate so that they can refarm the spectrum or set aside a portion of the 2G spectrum for continuing operating 2G and only refarm the rest for LTE. In this paper we propose a novel solution to provide GSM connectivity within an LTE carrier through an efficient overlay by reserving a few physical resource blocks for GSM. With this approach, operators can refarm their 2G spectrum to LTE efficiently while still providing some GSM connectivity to their low data rate M2M customers. Furthermore, spectrum can be dynamically shared between LTE and GSM. An approach similar to that proposed in this paper can also be applied for other narrow band technology overlays over LTE.
Year
DOI
Venue
2013
10.1109/TWC.2013.092313.130227
IEEE Transactions on Wireless Communications
Keywords
DocType
Volume
dynamic spectrum access (dsa),cellular radio,global system for mobile connectivity,low bandwidth machine-to-machine devices,legacy devices,fractional reuse,m2m devices,m2m,gsm,spread spectrum communication,dynamic spectrum refarming,power allocation,long term evolution technology,machine-to-machine,lte,lte technology,spectrum refarming,data traffic,multi-rat,long term evolution,interference,ofdm,machine to machine,bandwidth,mobile communication
Journal
12
Issue
ISSN
Citations 
10
1536-1276
10
PageRank 
References 
Authors
0.79
9
2
Name
Order
Citations
PageRank
Xingqin Lin1121365.14
Harish Viswanathan247768.86