By Harri Holma (Editor), Antti Toskala (Editor)
Very popular because the ebook at the air interface of 3G mobile structures WCDMA for UMTS has back been totally revised and up-to-date. The 3rd version now covers the main positive factors of 3GPP unencumber 6 making sure it is still the best important source during this always progressing region. by way of offering a deep realizing of the WCDMA air interface, the sensible strategy of this 3rd variation will proceed to attract operators, community and terminal brands, provider services, collage scholars and frequency regulators. Explains the major components of the 3GPP/WCDMA ordinary provides community dimensioning, insurance and capability of WCDMA Introduces TDD and discusses its adjustments from FDD Key 3rd variation updates contain: Covers the most 3GPP unencumber 6 updates additional complements excessive pace Downlink Packet entry (HSDPA) bankruptcy with a few new simulation effects Explains excessive pace Uplink Packet entry (HSUPA) examine merchandise Introduces the hot prone together with their functionality research : Push-to-Talk over mobile (PoC), streaming, See What I See (SWIS) and multiplayer video games offers a few new WCDMA box dimension effects: ability, end-to-end functionality and handovers contains thoroughly up-to-date antenna beamforming and multiuser detection sections that includes new simulation effects Introduces TD-SCDMA and compares it to unencumber TDD
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Extra resources for WCDMA for UMTS : Radio Access for Third Generation Mobile Communications
10. VoIP as a building block for rich calls WCDMA for UMTS 22 delay is low enough to meet the conversational service requirements. The QoS differentiation and IP header compression are important to make an efﬁcient VoIP service in WCDMA. 4 Multiplayer Games We ﬁrst group the existing multiplayer games into key categories based on their end user requirements. 11. 11. 1. Note that these requirements have been derived from studies using a ﬁxed network connection and not a cellular network connection.
These bit rate and delay requirements may be met in a cost efﬁcient way by utilising the QoS differentiation features that are available in UMTS. From a technical perspective, the peer-to-peer connections are in the packet switched domain set up by using the IMS system and by utilising the session initiation protocol (SIP) . From a network and end user perspective this sets requirements on the SIP signalling, that it is fast enough not to disturb the user when setting up the additional video stream connection.
The charging can then be based on the subscription or based on the keys which enable an end user to access the data. The MBMS content can be created by the operator itself or by a third party and, as such, all the details of what an MBMS service should look like will not be speciﬁed by 3GPP, but left for operators and service providers. 16, where the IP multicast network refers here to any server providing MBMS content over the Internet. 16. Example MBMS high level architecture The example data rates in  range from the 10 kbps text-based information to the 384 kbps video distribution on MBMS.