Change search
ReferencesLink to record
Permanent link

Direct link
Public safety communication over 3GPP LTE
2008 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The 3rd Generation Partnership Project (3GPP) is ready to present a new cellular network standard: Long Term Evolution (LTE). LTE improves communication for public safety users like police, medical, and rescue workers in cellular networks. This creates a need to examine whether LTE can satisfy public safety users requirements. This thesis has a focus on group communication with a voice service. Using the LTE cellular network simulator we find the cell capacity and examine the performance at the capacity limit. We show that LTE can serve large groups for communication and by examining different voice activities we show there is only a small effect on capacity. With a study of optimization techniques we show that combining a low codec bit-rate with two bundled speech frames per IP packet gives a significant increase in capacity. By improving the scheduler algorithm by increasing the priority to old packets in the sending queue, we increase the capacity further. Based on the results from the evaluation we determine that LTE can satisfy the public safety users requirements, making LTE an option for public safety communication.

Place, publisher, year, edition, pages
Keyword [en]
Technology, 3GPP, LTE, Public safety, Group communication.
Keyword [sv]
URN: urn:nbn:se:ltu:diva-42011ISRN: LTU-EX--08/037--SELocal ID: 0166d6df-cfe7-4a31-8eff-a5b37ecbf668OAI: diva2:1015227
Subject / course
Student thesis, at least 30 credits
Educational program
Computer Science and Engineering, master's level
Validerat; 20101217 (root)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

Open Access in DiVA

fulltext(560 kB)0 downloads
File information
File name FULLTEXT01.pdfFile size 560 kBChecksum SHA-512
Type fulltextMimetype application/pdf

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

ReferencesLink to record
Permanent link

Direct link