Book contents
- Frontmatter
- Contents
- Preface
- Acknowledgemants
- List of notation
- List of acronyms and abbreviations
- 1 Introduction
- 2 Structure of the SINR calculation problem
- 3 Poisson point processes
- 4 SINR analysis for a single tier with fixed power
- 5 SINR analysis for multiple tiers with fixed powers
- 6 SINR analysis with power control
- 7 Spectral and energy efficiency analysis
- 8 Closing thoughts: future heterogeneous networks
- Appendix A Some common probability distributions
- Appendix B HCNs in LTE
- References
- Author index
- Subject index
1 - Introduction
Published online by Cambridge University Press: 18 December 2013
- Frontmatter
- Contents
- Preface
- Acknowledgemants
- List of notation
- List of acronyms and abbreviations
- 1 Introduction
- 2 Structure of the SINR calculation problem
- 3 Poisson point processes
- 4 SINR analysis for a single tier with fixed power
- 5 SINR analysis for multiple tiers with fixed powers
- 6 SINR analysis with power control
- 7 Spectral and energy efficiency analysis
- 8 Closing thoughts: future heterogeneous networks
- Appendix A Some common probability distributions
- Appendix B HCNs in LTE
- References
- Author index
- Subject index
Summary
The rapid rate of increase in data traffic means that future wireless networks will have to support a large number of users with high data rates. A promising way to achieve this is by spectrum reuse through the deployment of cells with small range, such that the same time-frequency resources may be reused simultaneously in multiple cells. At the same time, the traditional coverage requirement for wireless users (supporting a modest rate at cell-edge users) is most economically met with cells having large range, i.e. the traditional macrocellular architecture. Thus the wireless cellular networks of the future are likely to be heterogeneous, i.e. have one or more tiers of small cells overlaid on the macrocellular tier.
Let us look at network design from the point of view of a service provider considering a deployment of a network in a certain region. Throughout this book, we only consider the downlink, i.e. the links from the BSs to the user terminals. The principal metrics we shall focus on are coverage and capacity.
(1) Coverage Intuitively, a user (or, more precisely, a user location) is covered if the communication link from the BS serving that user is sufficiently “good” that the user terminal can correctly receive both the control signaling and the data traffic at some minimum rate from the BS. Here, “good” means that (a) the received signal from the BS is “strong,” i.e. the received signal power from the BS exceeds some threshold, and also that (b) the received signal to interference plus noise ratio (SINR) at the user exceeds some minimum value.
- Type
- Chapter
- Information
- Analytical Modeling of Heterogeneous Cellular NetworksGeometry, Coverage, and Capacity, pp. 1 - 7Publisher: Cambridge University PressPrint publication year: 2014