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Divider modulus is a periodic function of time. 0 Reference frequency can be greater than the resolution frequency. 0 In-band gain is reduced when reference frequency is increased. ==> lower in-band noise. 0 Typically, loop bandwidth of PLL can be increased compared to integer-N divide ==> faster lock. 0 Spurs
2. Background and Standardization of WCDMA. WCDMA System Architecture. UTRAN (UMTS Terrestrial Radio Access Network). Architecture. 3GPP TS 25.401. Table of Contents
References: • Kaaranen, Ahtiainen, Laitinen, Naghian, Niemi: UMTS Networks – Architecture, Mobility and. Services. 2nd edition, Wiley 2005. • Ch 5.1: Core Network Architecture Release 3. • Ch 5.4&5.5: Core Network Architecture Release 4 and 5. • Ch 6: UMTS Terminal. • 3GPP TS 23.002: UMTS network architecture (CN
Intersystem: UMTS to GSM or UMTS to GPRS. – UMTS supports a variety of user data rates and both packet and circuit switched services. – System composed of three main subsystems. Telcom 2720. 4. UMTS System Architecture. • UE (User Equipment) that interfaces with the user. • UTRAN (UMTS Terrestrial Radio
24 Jan 2006 Overview of UMTS-WCDMA Technology. 15. Air Interface Protocol Architecture. Control Plane. User Plane. Radio Resource Management. Radio Link. Control. Broadcast/. Multicast Ctrl. Packet Data. Conv. Protocol. Media Access. Control
BTS. BSC. MSC. VLR. GMSC. HLR. MS. GSM/GPRS Network. GSM/GPRS Network Architecture. Architecture. V. Mancuso, I. Tinnirello database. IP Backbone. Internet. SD. N .. PDF for QoS in IMS. (intermediary between the application. (intermediary between the application-level QOS and level QOS and the 3G network.
BSS: Base Station Subsystem. BSC: Base Station Controller. BTS: Base Transceiver Station. WCDMA RAN: WCDMA. Radio Access Network. RNC: Radio Network Controller. RBS: Radio Base Station. Um (the radio interface). Uu (the radio interface). Handset. A. A lu lu. Abis. Abis lub lub lur. GSM/WCDMA Architecture
10 Jun 2004 10/6/2004. Pradipta Biswas M. Tech. SIT. IITKGP. WCDMA Protocol Architecture. Physical Layer. Main 3G Requirements. ?High Bit Rates. ?Flexible Variable bit rate both in Uplink and Downlink. ?Different services have been multiplexed on a single physical connection. ?Support for All-IP RAN.
Radio Access Network Architecture. • 2.1 System Architecture. • 2.2 UTRAN Architecture. • 2.3 General Protocol Model for UTRAN. Terrestrial Interfaces. • 2.4 UMTS Core Network Architecture and. Evolution. • 2.5 Radio Resources Management
Figure 2.1 WCDMA Network. 2.2. SYSTEM ARCHITECTURE. The UMTS utilizes the same well-known architecture that has been used by all main second generation systems and even by some first generation systems. The reference list contains the related 3GPP specifications. The UMTS system consists of a number of
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