Dynamic Group PCI Assignment Scheme
2011 (English)In: The Seventh International Conference on Wireless and Mobile Communications (ICWMC 2011), 2011, 101-106 p.Conference paper (Refereed)
The Physical Cell Identity (PCI) is used to identify femtocell in LTE femtocell as the physical layer identity. Due to the fact that a) the PCIs are normally allocated without planning; and b) the limitation of the number of PCI, the cross-tier PCI confusion problem has arisen. The current solution in 3GPP Release 9 is to use Cell Global Identity (CGI) associated with PCI to solve this problem of confusion. However, using CGI has many serious drawbacks. Especially CGI might cause the inbound-handover is failure. In order to mitigate the CGI problem, this research proposes a dynamic PCI assignment scheme of DG-PCI in the macrocell and femtocell environment. The proposed scheme is tested by using system-level simulation. The simulations showed that the approach offers an optimal PCI distribution between macrocell and femtocell. The test showed that the CGI problem can be solved, and hence increase the successful rate of inbound-handover.
Place, publisher, year, edition, pages
2011. 101-106 p.
PCI, CGI, LTE femtocell, Graph Colouring, PCI release
IdentifiersURN: urn:nbn:se:kth:diva-86432OAI: oai:DiVA.org:kth-86432DiVA: diva2:500720
7th Conference on Wireless and Mobile Communications (ICWMC). Luxembourg City, Luxembourg. June 19, 2011 - June 24, 2011
QC 201204112012-02-132012-02-132012-04-11Bibliographically approved