Information: Join today and make your research activities more affordable! Technical workshop participation fees and annual registration fees are available at member rates.
Notice: [Important] Announcement of Changes to Registration Fee Payment and Manuscript Upload Procedures for IEICE Technical Meetings
IEICE Technical Committee Submission System
Conference Paper's Information		 Online Proceedings
[Sign in]
Tech. Rep. Archives
 Go Top Page Go Previous   [Japanese] / [English] 

Paper Abstract and Keywords
Presentation 2015-07-02 14:50
[Special Invited Talk] Challenges Toward Spectrum-Energy Efficient Mobile Wireless Networks
Fumiyuki Adachi (Tohoku Univ.) CS2015-19
Abstract (in Japanese) (See Japanese page) 
(in English) Mobile wireless networks have evolved from the 1st generation (1G) using analog technology to the 2nd generation (2G) using digital technology, the 3rd generation (3G) and then to the 4th generation (4G) called LTE-A via 3.9G LTE. Every 10 years, new generation networks appeared. LTE-A networks provide a very high speed transmission of several 100Mbps.
The mobile data traffic has been increasing rapidly by about two times per year owing to increasing popularity of broadband data services such as high quality video. Because of limited available bandwidth, the spectrum-efficiency has been the most important concern for the last few decades. The available energy, in particular for battery operated user terminals, is also limited. Therefore, the energy-efficiency has become an important concern. To improve the spectrum-efficiency and energy-efficiency simultaneously, the mobile wireless networks need to be significantly restructured. One promising solution is an introduction of small-cell structured network. However, a wide range of user mobility is problematic; frequent handover will be caused. Traffic density is not necessarily high everywhere. Therefore, it is wise to keep the cell size the same as macro-cell networks while exploiting more non-uniform spatial distribution of users. We are recently investigating a virtual macro-cell network, where a virtual macro-cell is consisted of a macro-cell and many small-cells. There are two approaches to implement the small-cell layer: distributed small base stations and distributed antennas. In this presentation, we will overview the mobile wireless evolution of the last 30 years and discuss the technical issues toward the 5G networks. Then, we will introduce the concept of virtual macro-cell network using distributed small base stations. Finally, we will discuss about the impact of power on/off management of base stations on network power consumption and hand over, and then the distributed autonomous dynamic channel allocation and multi-access issues.
Keyword (in Japanese) (See Japanese page) 
(in English) Mobile wireless / LTE / LTE-A / small-cell networks / handover / channel assignment / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 123, CS2015-19, pp. 55-55, July 2015.
Paper # CS2015-19 
Date of Issue 2015-06-25 (CS) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Notes on Review This article is a technical report without peer review, and its polished version will be published elsewhere.
Download PDF CS2015-19

Conference Information
Committee CS  
Conference Date 2015-07-02 - 2015-07-03 
Place (in Japanese) (See Japanese page) 
Place (in English) Eef Information Plaza (Kumejima Is.) 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Next generation networks, access network, broadband access system, power-line communications, wireless communication systems, coding system, etc. 
Paper Information
Registration To CS 
Conference Code 2015-07-CS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Challenges Toward Spectrum-Energy Efficient Mobile Wireless Networks 
Sub Title (in English)  
Keyword(1) Mobile wireless  
Keyword(2) LTE  
Keyword(3) LTE-A  
Keyword(4) small-cell networks  
Keyword(5) handover  
Keyword(6) channel assignment  
Keyword(7)  
Keyword(8)  
1st Author's Name Fumiyuki Adachi  
1st Author's Affiliation Touhoku University (Tohoku Univ.)
2nd Author's Name  
2nd Author's Affiliation ()
3rd Author's Name  
3rd Author's Affiliation ()
4th Author's Name  
4th Author's Affiliation ()
5th Author's Name  
5th Author's Affiliation ()
6th Author's Name  
6th Author's Affiliation ()
7th Author's Name  
7th Author's Affiliation ()
8th Author's Name  
8th Author's Affiliation ()
9th Author's Name  
9th Author's Affiliation ()
10th Author's Name  
10th Author's Affiliation ()
11th Author's Name  
11th Author's Affiliation ()
12th Author's Name  
12th Author's Affiliation ()
13th Author's Name  
13th Author's Affiliation ()
14th Author's Name  
14th Author's Affiliation ()
15th Author's Name  
15th Author's Affiliation ()
16th Author's Name  
16th Author's Affiliation ()
17th Author's Name  
17th Author's Affiliation ()
18th Author's Name  
18th Author's Affiliation ()
19th Author's Name  
19th Author's Affiliation ()
20th Author's Name  
20th Author's Affiliation ()
21st Author's Name  
21st Author's Affiliation ()
22nd Author's Name  
22nd Author's Affiliation ()
23rd Author's Name  
23rd Author's Affiliation ()
24th Author's Name  
24th Author's Affiliation ()
25th Author's Name  
25th Author's Affiliation ()
26th Author's Name / /
26th Author's Affiliation ()
()
27th Author's Name / /
27th Author's Affiliation ()
()
28th Author's Name / /
28th Author's Affiliation ()
()
29th Author's Name / /
29th Author's Affiliation ()
()
30th Author's Name / /
30th Author's Affiliation ()
()
31st Author's Name / /
31st Author's Affiliation ()
()
32nd Author's Name / /
32nd Author's Affiliation ()
()
33rd Author's Name / /
33rd Author's Affiliation ()
()
34th Author's Name / /
34th Author's Affiliation ()
()
35th Author's Name / /
35th Author's Affiliation ()
()
36th Author's Name / /
36th Author's Affiliation ()
()
Speaker Author-1 
Date Time 2015-07-02 14:50:00 
Presentation Time 45 minutes 
Registration for CS 
Paper # CS2015-19 
Volume (vol) vol.115 
Number (no) no.123 
Page p.55 
#Pages 1 
Date of Issue 2015-06-25 (CS) 

[Return to Top Page]

[Return to IEICE Web Page]
The Institute of Electronics, Information and Communication Engineers (IEICE), Japan