Downlink Joint Base-station Assignment and Packet Scheduling Algorithm for Cellular CDMA/TDMA Networks

Abstract

Abstract-In this paper using a utility-based approach, downlink packet transmission in a CDMA/TDMA cellular network is formulated as an optimization problem. A utility function corresponds to each packet served by a base-station that is an increasing function of the packet experienced delay and the channel gain, and a decreasing function of the base-station load. Unlike previous works, in this paper, the optimization objective is to maximize the total network utility instead of the base-station utility. We show that this optimization results in joint base-station assignment and packet scheduling. Therefore, in addition to multi-user diversity, the proposed method also exploits multi-access-point diversity and soft capacity. A polynomial time heuristic algorithm is then proposed to solve the optimization problem. Simulation results indicate a significant performance improvement in terms of packet-drop-ratio and achieved throughput.

Performance analysis of transport and radio load balancing strategies for BS assignment in mobile access networks

“…Obtained results demonstrates that JRT is able to allocate more users to BSs so that both radio and transport constraints can be satisfied under different scenarios comprising partially-limited backhaul RANs and the presence of traffic hotspots. distributed [9]. Under this analysis, hot-spots are randomly located within the service area of some cells (a cell can have one or zero hot-pots) and the parameter NBS is used to indicate the number of BSs with a hot-spot region.…”

“…Specifically, we focus on the downlink because it is usually considered the more restrictive link due to the asymmetric bandwidth demand between the downlink and the uplink data services [9]. The network consists of N BSs that cover a geographical area in which, at a given instant, there are M active users that have to be allocated to BSSe It is assumed that resources in any BS in the system in the downlink are constrained by two factors: the maximum power limit in the radio interface and the provisioned capacity in the backhaul network.…”

CAC DPLB MCN: A Distributed Load Balancing Scheme in Multimedia Mobile Cellular Networks

“…Earlier work on load balancing mostly assumed a centralized controller that governs the base stations and the mobile stations with access to all the necessary information [27], [36], [7]. However, centralized approaches, for load balancing, may require excessive computational complexity and message overhead, which increase exponentially with the size of the network.…”

Reducing Call Blocks in Cellular Network with Non-Uniform Traffic Conditions

“…Earlier work on load balancing mostly assumed a centralized controller that governs the base stations and the mobile stations with access to all the necessary information [7][8][9]. However, centralized approaches, for load balancing, may require excessive computational complexity and message overhead, which increase exponentially in the size of the network.…”