A Waterfilling Algorithm for Multiple Access Point Connectivity With Constrained Backhaul Network

Author

Ahmad, Syed Amaar

Author_Institution

Savari Networks, Santa Clara, CA, USA

Volume

4

Issue

5

fYear

2015

Firstpage

517

Lastpage

520

Abstract

The 4G/5G paradigm offers user equipment (UE) simultaneous connectivity to a plurality of wireless access points (APs). We consider a UE communicating with its destination through multiple uplinks operating on orthogonal wireless channels with unequal bandwidth. The APs are connected via a tree-like backhaul network with destination at the root and non-ideal link capacities. We develop a power allocation scheme that achieves a near-optimal rate without explicit knowledge of the backhaul network topology at transmitter side. The proposed algorithm waterfills a dynamically selected subset of uplinks using a low-overhead backhaul load feedback.

Keywords

4G mobile communication; 5G mobile communication; telecommunication network topology; trees (mathematics); wireless channels; 4G paradigm; 5G paradigm; constrained backhaul network; low-overhead backhaul load feedback; multiple access point connectivity; network topology; orthogonal wireless channels; power allocation scheme; tree-like backhaul network; waterfilling algorithm; wireless access points; Bandwidth; Knowledge engineering; Network topology; Noise; Resource management; Uplink; Wireless communication; Feedback control; Het-Nets; Optimization; Resource Allocation; Small Cells; feedback control; hetNets; resource allocation; small cells;

fLanguage

English

Journal_Title

Wireless Communications Letters, IEEE

Publisher

ieee

ISSN

2162-2337

Type

jour

DOI

10.1109/LWC.2015.2451076

Filename

7140773