نتایج جستجو برای: radio access network
تعداد نتایج: 1033664 فیلتر نتایج به سال:
The Project Authorization Request (PAR) for the IEEE P1900.4 Working Group (WG), under the IEEE Standards Coordinating Committee 41 (SCC41) was approved in December 2006, leading to this WG being officially launched in February 2007 [1]. The scope of this standard is to devise a functional architecture comprising building blocks to enable coordinated network-device distributed decision making, ...
In this paper we introduce a new, flexible radio access stratum security architecture for 5G mobile networks that supports a dynamic, flexible radio access network with multiple different security termination points for the control and user plane communication between a mobile device and the network. We describe key refreshing methods that allow to refresh user plane keys for individual radio l...
In this paper, a power consumption model for both macrocell and microcell base stations is proposed. This model is validated by temporal power measurements on actual base stations and an excellent agreement is obtained. Furthermore, the power consumption’s evolution during the day is investigated by means of these measurements. The energy efficiency of three different wireless technologies is c...
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a typical radio frequency identification system (rfid) includes one reader and a number of tags. the reader transmit to commands to the tags with interrogation radio signals, and tags receive the command and then respond with their identification. readers with interrogation signals can read tags’ responses. in rfid systems, when multiple tags respond to one reader simultaneously, tag collision ...
This paper addresses the problematic of congestion control in the radio access interface when considering the allocation of voice and data services over several Radio Access Technologies (RATs). In particular, the GSMIEDGE Radio Access Network (GERAN) and the UMTS Terrestrial Radio Access Network (UTRAN) are considered for the evaluation of congestion control strategies. After a congestion situ...
[1] 3GPP TR 21.905 V11.2.0 (2012-09) Vocabulary for 3GPP Specifications [2] 3GPP TR 23.882 V8.0.0 (2008-09) 3GPP System Architecture Evolution: Report on Technical Options and Conclusions [3] 3GPP TS 22.278 V12.1.0 (2012-06) Service requirements for the Evolved Packet System (EPS) [4] 3GPP TR 25.912 V11.0.0 (2012-09) Feasibility study for evolved Universal Terrestrial Radio Access (UTRA) and ev...
WLAN-UMTS integration in the UMTS-based approach can be performed either at the UMTS Core Network (CN) or Radio Access Network (UTRAN). Both interworking solutions provide the operator with additional license-free bandwidth and promise good handover performance. Integration at the radio access level has the advantage that the UMTS core network protocols remain unaffected and the interworking ar...
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