Object structure

Requirements of 4G-Based Mobile Broadband on Future Transport Networks, Journal of Telecommunications and Information Technology, 2012, nr 2


Voß, Stefan ; Schwarze, Silvia ; Nitsch, Ralf ; Wevering,Stefan ; Fricke, Matthias ; Heckwolf, Andrea ; Herber, Ralf

Subject and Keywords:

backhauling ; X2 interface ; LTE Advanced ; mobile network design


Long term evolution technologies provide new standards in mobile communications regarding available bandwidth. It is expected that users of one radio cell will share more than 100 Mbit/s in future. To take advantage of the full feature set of next generation mobile networks, transport net- work design has to face new requirements, caused by the architectural changes of LTE technologies. Especially the newly defined X2 interface impacts on the transport network requirements. X2 enables direct communication between evolved base stations (eNBs) and thus, enforces local solutions. At the same time a tendency of locating network elements at fewer, central sites to reduce operational expenditure can be observed, in particular concerning the transport layer. This leads to the question of how the direct X2 connection of eNBs on the logical layer can be accommodated with a general centralization of transport networks. Our considerations show that for LTE, a centralized transport network is able to realize the local meshing between eNBs. However, for LTE Advanced, the standards currently discussed by the 3GPP initiative could lead to enhanced requirements on the X2 interface latency. Consequently, the implications for the network architecture have to be analyzed in more detail.


Instytut Łączności - Państwowy Instytut Badawczy, Warszawa


2012, nr 2

Resource Type:




Resource Identifier:

ISSN 1509-4553, on-line: ISSN 1899-8852


Journal of Telecommunications and Information Technology



Rights Management:

Biblioteka Naukowa Instytutu Łączności



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