Abstract
User-centric network (UCN) organises a dynamic femto access point group (FAPG) for each user to meet the exponential data demands in 5G. However, there exists spatial correlation in the scheduling of femto access points (FAPs) due to the overlap of different users' FAPGs, which has not yet been analysed in existing literature. In this study, considering this spatial correlation by using Matérn-like model, simple yet accurate semi-closed form expressions of rate coverage probability and area average goodput of power control strategy in UCN are derived, respectively, using stochastic geometry tools. In this user-centric power control strategy, each user equipment (UE) determines its FAPG radius considering the distance to the nearest FAP, and FAPs within the FAPG employ power control to mitigate dominant interference for the UE. Further, Matérn-like model guarantees that two FAPs in the same FAPG will not transmit at full power simultaneously, and thus whether a FAP performs power control is correlated with other FAPs that belong to the same FAPG. The analytical results demonstrate significant performance gains of power control strategy in UCN compared with the non-coordination baseline, e.g. area average goodput is improved by about 44% when FAP-to-UE density ratio equals 1.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 326-333 |
| Number of pages | 8 |
| Journal | IET Communications |
| Volume | 12 |
| Issue number | 3 |
| DOIs | |
| State | Published - Feb 20 2018 |
All Science Journal Classification (ASJC) codes
- Computer Science Applications
- Electrical and Electronic Engineering
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