Maximum-weight scheduling with hierarchical modulation for lower delay
| Autor: | Tolga Numanoglu, Ahmet Zahid Yalcin, Melda Yuksel, Ahmet Ertugrul Kolagasioglu, Defne Aktas, Furuzan Atay Onat |
|---|---|
| Přispěvatelé: | TOBB ETU, Faculty of Engineering, Department of Electrical & Electronics Engineering, TOBB ETÜ, Mühendislik Fakültesi, Elektrik ve Elektronik Mühendisliği Bölümü, Yüksel Turgut, Ayşe Melda, M-5343-2014 |
| Rok vydání: | 2016 |
| Předmět: |
Packet transmission
Computer science Real-time computing 02 engineering and technology Lower priority Reuse Scheduling (computing) 03 medical and health sciences 0302 clinical medicine Hierarchical modulation 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Maximum-weight scheduling Queue Delay Network packet business.industry 020206 networking & telecommunications Throughput Spatial reuse Packet prioritization business 030217 neurology & neurosurgery Computer network |
| Zdroj: | AEU - International Journal of Electronics and Communications. 70:1205-1210 |
| ISSN: | 1434-8411 |
| Popis: | In this paper, hierarchical modulation is used in conjunction with maximum-weight scheduling to achieve lower transmission delays. Via hierarchical modulation, the scheduled user has the option to transmit to two users simultaneously. In order to reflect service differentiation schemes used in upper layers, a scenario in which each user generates packets with different priority levels is considered. It is assumed that as long as there are high priority packets waiting in the scheduled user's queue, lower priority packets cannot be transmitted. It is shown that, using hierarchical modulation in the presence of packet prioritization, average delay of low priority traffic can be reduced while achieving higher throughput. In the absence of packet prioritization, using hierarchical modulation lowers packet transmission delays without any loss in throughput. The effect of multiple access interference is also investigated. It is shown that both single and two-layer schemes have similar average spatial reuse factors. (C) 2016 Elsevier GmbH. All rights reserved. This material is supported in part by ASELSAN Inc. and the Ministry of Science, Industry and Technology SAN-TEZ program, grant no. STZ 01236-2012-1 and by TUBITAK under Project No 112E059. The material in this correspondence is presented in part at the 2nd Iran Workshop on Communication and Information Theory, Tehran, Iran, May 2014, [1]. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect