Antti Toskala

WCDMA for UMTS: Radio Access for Third Generation Mobile Communications

From the Publisher: WCDMA for UMTS provides a complete picture of the Wideband CDMA (Code Division Multiple Access) air interface of the 3rd generation cellular systems - UMTS (Universal Mobile Telecommunications Systems). WCDMA is designed for multimedia communications including high quality images and video, and access to services with high data rates. These capabilities will create new business opportunities for manufacturers, operators and for the providers of content and applications. * Explains the key parts of the WCDMA standard and provides guidelines for its efficient use * Presents network dimensioning and coverage and capacity planning of WCDMA * Introduces radio resource management algorithms in the WCDMA network * Examines the coverage and capacity of WCDMA up to 2Mbps using numerous simulation results * Introduces the TDD (Time Divisions Duplex) mode * Discusses the co-existence of TDD and FDD (Frequency Divisions Duplex) and highlights their main differences Now includes the main modifications made to the 3GPP standard up until the end of 2000 and features the following new material: * Reference terminal classes * Current status of UMTS licensing * Capacity upgrade paths and capacity per km2 * Inter-frequency handovers and inter-system handovers to GSM * Antenna diversity gain measurements in the WCDMA experimental system Written by leading experts in the field, this practical approach to the key features in WCDMA will have wide-ranging appeal to Research and Development Engineers, Practising Engineers, Cellular Operators, Technical Managers and Students on Telecommunications courses.

Wcdma for Umts

From the Publisher: WCDMA for UMTS is the only reference available which provides a complete picture of the Wideband CDMA (Code Division Multiple Access) air interface of the 3rd generation cellular systems - UMTS (Universal Mobile Telecommunication System). WCDMA is designed for multimedia communications including high quality images and video, and access to services with high data rates. These capabilities will create new business opportunities for manufacturers, operators and for the providers of content and applications. Explains the key parts of the 3GPP/WCDMA standard and provides guidelines for its efficient usePresents network dimensioning and coverage and capacity planning of WCDMAIntroduces radio resource management algorithms in the WCDMA networkExamines the coverage and capacity of WCDMA up to 2Mbps using numerous simulation resultsIntroduces the TDD (Time Divisions Duplex) modeDiscusses the co-existence of TDD and FDD (Frequency Divisions Duplex) and highlights their main differences The second edition contains 50 new pages and features the following updates, enabling this reference to remain as the leading text in the area: HSDPA (High Speed Downlink Packet Data)BTS and UE performance requirementsWCDMA1900: WCDMA for the Americas marketIP transportLocation techniques

HSDPA/HSUPA for UMTS: High Speed Radio Access for Mobile Communications

Preface. Acknowledgements. Abbreviations. 1. Introduction (Harri Holma and Antti Toskala). 1.1 WCDMA technology and deployment status. 1.2 HSPA standardization and deployment schedule. 1.3 Radio capability evolution with HSPA. 2. HSPA standardization and background (Antti Toskala and Karri Ranta-Aho) 2.1 3GPP. 2.2 References. 3. HSPA architecture and protocols (Antti Toskala and Juho Pirskanen). 3.1 Radio resource management architecture. 3.2 References. 4. HSDPA principles (Juho Pirskanen and Antti Toskala). 4.1 HSDPA vs Release 99 DCH. 4.2 Key technologies with HSDPA. 4.3 High-speed dedicated physical control channel. 4.4 BTS measurements for HSDPA operation. 4.5 Terminal capabilities. 4.6 HSDPA MAC layer operation. 4.7 References. 5. HSUPA principles (Karri Ranta-Aho and Antti Toskala). 5.1 HSUPA vs Release 99 DCH. 5.2 Key technologies with HSUPA. 5.3 E-DCH transport channel and physical channels. 5.4 Physical layer procedures. 5.5 MAC layer. 5.6 Iub parameters. 5.7 Mobility. 5.8 UE capabilities and data rates. 5.9 References and list of related 3GPP specifications. 6. Radio resource management (Harri Holma, Troels Kolding, Klaus Pedersen, and Jeroen Wigard). 6.1 HSDPA radio resource management. 6.2 HSUPA radio resource management. 6.3 References. 7. HSDPA bit rates, capacity and coverage (Frank Frederiksen, Harri Holma, Troels Kolding, and Klaus Pedersen). 7.1 General performance factors. 7.2 Single-user performance. 7.3 Multiuser system performance. 7.4 Iub transmission efficiency. 7.5 Capacity and cost of data delivery. 7.6 Round trip time. 7.7 HSDPA measurements. 7.8 HSDPA performance evolution. 7.9 Conclusions. 7.10 Bibliography. 8. HSUPA bit rates, capacity and coverage (Jussi Jaatinen, Harri Holma, Claudio Rosa, and Jeroen Wigard). 8.1 General performance factors. 8.2 Single-user performance. 8.3 Cell capacity. 8.4 HSUPA performance enhancements. 8.5 Conclusions. 8.6 Bibliography. 9. Application and end-to-end performance (Chris Johnson, Sandro Grech, Harri Holma, and Martin Kristensson) 9.1 Packet application introduction. 9.2 Always-on connectivity. 9.3 Application performance over HSPA. 9.4 Application performance vs network load. 9.5 References. 10. Voice-over-IP (Harri Holma, Esa Malkama ki, and Klaus Pedersen). 10.1 VoIP motivation. 10.2 IP header compression. 10.3 VoIP over HSPA. 10.4 References. 11. RF requirements of an HSPA terminal (Harri Holma, Jussi Numminen, Markus Pettersson, and Antti Toskala). 11.1 Transmitter requirements. 11.2 Receiver requirements. 11.3 Frequency bands and multiband terminals. 11.4 References. Index.

LTE Advanced: 3GPP Solution for IMT-Advanced

From the editors of the highly successful LTE for UMTS: Evolution to LTE-Advanced, this new book examines the main technical enhancements brought by LTE-Advanced, thoroughly covering 3GPP Release 10 specifications and the main items in Release 11. Using illustrations, graphs and real-life scenarios, the authors systematically lead readers through this cutting-edge topic to provide an outlook on existing technologies as well as possible future developments. The book is structured to follow the main technical areas that will be enhanced by the LTE-Advanced specifications. The main topics covered include: Carrier Aggregation; Multiantenna MIMO Transmission, Heterogeneous Networks; Coordinated Multipoint Transmission (CoMP); Relay nodes; 3GPP milestones and IMT-Advanced process in ITU-R; and LTE-Advanced Performance Evaluation. Key features: * Leading author and editor team bring their expertise to the next generation of LTE technology * Includes tables, figures and plots illustrating the concepts or simulation results, to aid understanding of the topic, and enabling readers to be ahead of the technological advances

Interference considerations for the time division duplex mode of the UMTS Terrestrial Radio Access

The air interface of the UMTS Terrestrial Radio Access (UTRA) covers both a frequency division duplex (FDD) part for the paired bands and a time division duplex (TDD) part for the unpaired bands of the UMTS spectrum. The Universal Mobile Telecommunication System (UMTS) is the 3rd-generation mobile communication system. This paper presents an interference evaluation of the UTRA TDD. Since both uplink and downlink share the same frequency in TDD, the signals of the two transmission directions can interfere with each other. This interference can occur between two mobile stations or between two base stations within one carrier or between two operators. The interference between uplink and downlink is evaluated by system simulations. Synchronization and coordination requirements of UTRA TDD are evaluated based on the results.

EUTRAN Uplink Performance

Alongside with on-going further WCDMA development, work on evolved universal terrestrial radio access network (EUTRAN), also known as long term evolution (LTE), has been initiated in 3GPP. The objective of EUTRAN is to develop a framework for the evolution of the 3GPP radio-access technology towards wider bandwidth, lower latency and packet-optimized radio-access technology with peak data rate capability up to 100 Mbps. For the uplink direction, single carrier-FDMA (SC-FDMA) has been chosen as the multiple access technology. This paper introduces the uplink technology, the current state of progress in 3GPP as well as expected schedule for actual specification availability and describes a couple of key features, channel dependent frequency domain scheduling and multi-user MIMO in more detail. System performance results for channel dependent frequency domain scheduling are presented as well

Utran Long Term Evolution in 3GPP

The 3rd Generation Partner Ship Project (3GPP) produced the first version of WCDMA standard in the end of 1999, which is the basis of the Universal Mobile Telephone System (UMTS) deployed in the field today. This release, called release 99, contained all the basic elements to meet the requirements for IMT-2000 technologies. Release 5 introduced the high speed downlink packet access (HSDPA) in 2002, enabling now more realistic 2 Mbps and even beyond with data rates up to 14 Mbps. Further Release 6 followed with high speed uplink packet access (HSUPA) in end of 2004, with market introduction expected in 2007. Alongside with on-going further WCDMA development, work on evolved universal terrestrial radio access (UTRA) has been initiated in 3GPP. The objective of evolved UTRA is to develop a framework for the evolution of the 3GPP radio-access technology towards wider bandwidth, lower latency and packet-optimized radio-access technology with peak data rate capability up to 100 Mbps. This paper introduces the requirements, the current state of progress in 3GPP, findings on the performance, agreed architecture as well as expected schedule for actual specification availability

Mobility management and capacity analysis for high speed downlink packet access in WCDMA

In this paper we discuss two options for supporting mobility management for HSDPA-users. Especially issues related to direct change of the serving HS-DSCH cell are addressed. where a handover from a HS-DSCH in the source cell to a HS-DSCH in the target cell is made. It is concluded that change of the serving HS-DSCH cell without any intermediate channel switching to DCH seems to be a promising solution from a performance point of view as it allows us to have full HSDPA cell coverage and high capacity gain from introducing HSDPA. Uplink HS-DPCCH coverage is also addressed for users with their DCH in soft handover mode.

HSPA+ Evolution to Release 12: Performance and Optimization

A comprehensive reference book codifying the various standards releases for High Speed Packet Access (HSPA) wireless technologyHSPA evolution has maintained its prominence through Releases 7-11 but the evolution is coming to an end with Release 12, with the focus moving to LTE. However, HSPA network and terminal sales will continue for many years: HSPA is expected to remain as the number one radio access technology from the sales point of view far beyond 2015. This timely book examines the complete HSPA evolution, and will be the ultimate long term reference for HSPA evolution.Headed by the successful editing team of Holma, Toskala and Tapia, industry experts look at HSPA evolution including complete Release 11 and the main additions in Release 12. They describe 3GPP definitions, field measurement, expected performance, practical optimization guidelines and the implications to the devices and to the networks. The book also covers MIMO antenna solutions and multicarrier evolution to provide higher data rates. Dedicated chapters include Continuous Packet Connectivity and High Speed Common Channels which provide major improvement to the smartphone capacity, end user performance and power consumption. The book assumes basic understanding of mobile communications yet the material is presented in an understandable way which can be enjoyed without any pre-information about MIMO or other technology solutions.A comprehensive reference book codifying the various standards releases for High Speed Packet Access (HSPA) wireless technologyLeading editor and contributor team focusing their expertise on 3GPP features and performance, including Self Organizing Networks, LTE Interworking, Smartphone Optimization and Voice EvolutionDedicated chapter covering VoIP over HSPA, recognizing that telephony will continue to bring most of the revenues to mobile operators in the near futureIncludes tables, figures and plots illustrating the concepts or simulation results, to aid readers understanding of the topicAn essential resource for R&D engineers by network, terminal and chip set vendors, network engineers with operators, application developers, regulators.

Fairness vs. Performance in Rel-13 LTE Licensed Assisted Access.pdf

Wireless spectrum being a valuable resource, a large number of both non-profit and for-profit users rely on its unlicensed parts, usually to provide some sort of local area wireless coverage. When the cellular vendors and service providers expressed interest in the unlicensed spectrum, the incumbent community started to fear that the new technology would not respect the existing users. And although members of the incumbent community strongly influenced the design of licensed assisted access (LAA) in 3GPP, the fear has not dispersed yet. Representing a vendor with stakes in both communities, we attempt to disperse the fear by providing insight on the question of fairness and performance of LAA, openly discussing why it should generate less interference than WiFi and why it could be otherwise. We augment the discussion with insightful simulations, looking how detailed parameters of the channel access mechanism influence LAAs fairness and performance. Our investigations show that in common scenarios LAA is a fair neighbor to WiFi as is, and even in an extreme scenario only small adjustments to the channel access mechanism are needed to achieve the same outcome.