The Bluetooth technology is still in an early stage of development. Much more research can and will be done before the performance of Bluetooth reaches its peak. During the recent years, ideas to integrate Bluetooth units in larger networks have arose, with the Bluetooth unit in the role as access point to the network. This behavior opens up for new possibilities but also increases the requirements on performance. In this thesis the main topic is improvement of piconet performance. The piconet, with the Master unit as access point, is studied from a teletraffic engineering point of view. Different performance attributes and behaviors have been found and investigated. With the outcome of these investigations in mind…
Contents
1 INTRODUCTION
1.1 Background
1.2 Document Outline
Part A – Fundamentals
2 MEDIACELL SYSTEM OVERVIEW
3 WIRELESS NETWORKS
4 TECHNICAL DESCRIPTION OF THE BLUETOOTH TECHNOLOGY
4.1 History
4.2 The Protocol Stack
4.2.1 Core Protocols
4.2.2 Cable Replacement Protocol
4.2.3 Telephony Control Protocols
4.2.4 Adopted Protocols
4.3 The Bluetooth Radio System
4.3.1 Air Interface
4.3.2 Frequency Hopping and Channel Definition
4.3.3 Packet and Physical Link Definition
4.3.4 Connection Establishment
4.3.5 Piconet
4.3.6 Intra-Piconet Scheduling
4.3.7 Scatternet
4.3.8 Inter-Piconet Scheduling
4.3.9 Power Classes
5 TRAFFIC ENGINEERING
5.1 Introduction
5.2 Traffic Characteristics
5.2.1 Definition of Traffic
5.2.2 Traffic Types
5.2.3 Traffic Variation
5.2.4 Traffic Demand
5.2.5 Deployment Strategies
5.3 Quality of Service
5.4 Grade of Service
5.5 Teletraffic Theory
5.5.1 Introduction
5.5.2 The Poisson Arrival ProcessDahlberg
5.5.3 The Erlang Loss System
6 SIMULATION TOOL
6.1 Introduction
6.2 Network Simulator
6.3 Usage of NS-2/Bluehoc
6.4 Limitations
Part B – Traffic Management in a Bluetooth Network
7 INTRODUCTION
8 PICONET TRAFFIC MANAGEMENT
8.1 Introduction
8.2 Quality of Service
8.2.1 Introduction
8.2.2 QoS Parameters
8.2.3 QoS at LM Level
8.2.4 QoS at L2CAP Level
8.2.5 QoS Parameters
8.2.6 Conclusions
8.3 Traffic Scheduling
8.3.1 Introduction
8.3.2 Pure Round Robin (PRR)
8.3.3 Deficit Round Robin (DRR)
8.3.4 Exhaustive Round Robin (ERR)
8.3.5 Limited Round Robin (LRR)
8.3.6 Limited and Weighted Round Robin (LWRR)
8.3.7 Fair Exhaustive Polling (FEP)
8.3.8 Predictive Fair Polling (PFP)
8.3.9 Priority Policy (PP)
8.3.10 K-Fairness Policy (KFP)
8.3.11 Head-of-the-Line Priority Policy (HOL-PP)
8.3.12 Head-of-the-Line K-Fairness Policy (HOL-KFP)
8.3.13 Adaptive Flow-based Polling (AFP)
8.3.14 Conclusions
8.4 Segmentation and Reassembly
8.4.1 Introduction
8.4.2 Intelligent SAR (ISAR)
8.4.3 Partial Reordering SAR (PRSAR)
8.4.4 Best Fit (BF)
8.4.5 Optimum Slot Utilization (OSU)
8.4.6 Conclusions
8.5 Factors Affecting Throughput and Performance
8.5.1 Connection Establishment Signaling
8.5.2 Influence of SCO Traffic on ACL Channels
8.5.3 Interference Between Bluetooth Units
8.5.4 Interference from other Sources Dahlberg
8.6 Conclusions
9 INTRODUCTION TO TRAFFIC MODELS
9.1 Introduction
9.2 Presumptions
9.3 Single AP
9.4 Multi AP
9.5 Multi AP With a Separate Signaling Unit
9.6 Multi AP with Service Dependent Redirection
9.7 Conclusions
10 VOICE (SCO) MODEL
10.1 Introduction
10.2 SCO Algorithms
10.2.1 System Description
10.2.2 Alternative 1
10.2.3 Alternative 2
10.2.4 Alternative 3
10.2.5 Conclusions
10.3 Performance and Dimensioning of Multi APs
10.3.1 Introduction
10.3.2 Blocking Probability for Voice Calls
10.3.3 Dimensioning Requirements and Approximations
10.3.4 Conclusions
11 DATA (ACL) MODEL
11.1 Introduction
11.2 The Connection and Activity Based Policy
11.2.1 Policy Description
11.2.2 Data Rounds
11.2.3 Distribution of Packets
11.2.4 Choosing Type of Packet
11.2.5 Connection Establishment Signaling
11.3 Conclusions
12 SIMULATIONS
12.1 Introduction
12.2 Distance
12.2.1 Inputs
12.2.2 Results and Conclusions
12.3 Packet Types
12.3.1 Inputs
12.3.2 Results and Conclusions
12.4 Conclusions
Part C – Summary and Discussion
LIST OF REFERENCES
Author: Anders Dahlberg
Source: Blekinge Institute of Technology
Download URL 2: Visit Now