By Dave Wisely
What's an 'all-IP' community? What distinction will IP networking make to 3G services?
Third iteration (3G) cellular deals entry to broadband multimedia prone - and sooner or later almost all these, even voice and video, may be IP-based. although 3G networks usually are not in accordance with IP applied sciences, fairly they're an evolution from latest 2G networks. a lot paintings has to be performed to IP QoS and mobility protocols and architectures for them with a purpose to give you the performance 3G requires.
IP for 3G offers a complete assessment of 3G networking performance and examines how IP protocols will be built to supply the various easy construction blocks of a cellular method (mobility, QoS and phone control)
* transparent clarification of ways 3G works on the community level.
* evaluate of IP protocol and architectural principles.
* broad evaluate, type and research of IP mobility protocols - macro and micro- together with IPv6.
* research of IP QoS protocols and proposed recommendations for cellular networks.
* instructional on SIP (Session Initiation Protocol) and the way SIP can be utilized for multimedia consultation control.
* Description of up to date UMTS advancements - together with liberate 5.
* dialogue of 4G networks - what does 4G mean?
IP for 3G will entice cellular telecommunications and community engineers who need to know approximately destiny advancements in addition to method designers and builders. scholars and teachers on postgraduate classes with regards to telecommunications, specifically 3G networking or IP protocols, will locate this article perfect supplementary examining, simply assuming a common wisdom of GSM and basic networking rules.
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Additional info for IP for 3G: Networking Technologies for Mobile Communications
G. a BCH (Broadcast Channel carries the contents of the BCCH). e. allowing flows with higher priority QoS to have higher priority access to physical channels. g. the P-CCPCH - Primary Common Control Physical CHannel carries the BCH), forward error correction (error coding) and error detection, spreading (with the CDMA code), and RF modulation. More detail on the UMTS CDMA physical layer can be found in . 2 UTRAN Mobility Management Soft Handover The requirement to support soft handover in UMTS arises from the handover of mobiles between base stations.
This choice is related to the (backward) error correction that the underlying RLC (Radio Link Control) layer applies - more details of the functions of RLC can be found in the UTRAN section below. Transparent means that no error correction is applied at Layer 2. g. Ethernet frames). The choice of mode is based on the required QoS, resending lost or errored frames causes delay, and so the acknowledged mode is only used for applications that are delay sensitive. PDCP also performs a compression/decompression function - such as compressing TCP/IP headers.
7): • • • • • • • • The terminal requests PDP context activation. The SGSN checks the request against subscription information received from the HLR (during the attachment). If the requested QoS is not included in the subscription, it may be rejected/re-negotiated. The Access Point Name (name of external network) is sent, by the SGSN, to a DNS server (IP Domain Name Server - normal Internet-style name to IP address look up to find the IP address of the GGSN that is connected to the required network).