A Downlink Data Region Allocation Algorithmfor IEEE 802.16e OFDMA

A. Bacioccola, C. Cicconetti, L. Lenzini, E. Mingozzi

Information, Communications & Signal Processing, 2007 6th International Conference

Outline

Introduction Sample data region allocation algorithm

(SDRA) Performance analysis Conclusion

Introduction

IEEE 802.16e extends IEEE 802.16-2004 Support the mobility of users Provide QoS guarantees

OFDMA is the target air interface for mobile BWA with IEEE 802.16e mobile users with an improved resilience

multi-path fading in non-line-of-sight environments

wireless multiple access methods

Introduction

An IEEE 802.16e cell consists of Mobile Stations (MSs) Base Station (BS)

Access to the medium is scheduled on a time frame basis.

MAC frames extend over two dimensions Time Frequency

time

frequency ……

… …

…

…

…Minimum data transmission unit

Introduction

Data packets are conveyed into bi-dimensional data regions rectangles of slots within the frame

DL-MAP UL-MAP

The only constraint all data regions without overlapping

Introduction

One slot remains empty

BS transmits eight slots of data to MS

1*8

2*4

4*23*3

SDRA

…

Performance analysis

Performance analysis

…

Performance analysis

Conclusion

In this paper, they have addressed the data region allocation problem in IEEE 802.16e with the OFDMA air interface

Proposed a solution for data region allocation SDRA

Thank you