Introduction to Nokia RNC Presented by: Ahmed Mohamed Nabeeh
Agenda • Theoretical background • RNC versions • RNC cabinet mechanical structure • RNC configuration • RNC architecture • RNC plug-in units (PIU) • RNC function units (FUs)
Theoretical background The main function of the RNC is to control and manage the Radio Access Network (RAN) and the radio channels. 1. Radio Resource Management • Admission Control • Load Control • Packet Scheduling • Power Control • Handover Control 2. Operation and maintenance • Supervision system • Alarm system • Recovery system • Fault diagnosis system RNC main function
RNC location in the network • Below diagram shows the interfaces between the RNC and other N.Es N.B. The interface is named as IU-X, where x is the N.E, the interface is connected to, for example the interface connecting the RNC to the NDB is IU-B, the interface connecting the RNC to a another RNC is IU-R, etc.. Theoretical background
Theoretical background • 2N (HSB) : in this mode, each active unit is protected with only one card, in case of any fault/failure in the active card, the RNC will switch automatically over the SBY card • N+1: in this mode, each group of cards (N) is protected by only one card, in case of any fault at any card from the group the RNC will activate the SBY card automatically to take over the functions of the faulty card • SN+(Load sharing): in this mod, each group of cards (N) carry the certain number of processes, the load processes is distributed evenly over all the cards, in case of any card failure, its process will be redistributed evenly over all the working cards in the group N.B. The difference between N+1 and 2N configurations is that in the 2N configuration, one SBY unit is designated for only one active card while in the N+1 one SBY unit is designated for N group of cards Redundancy Principles
RNC versions • There are two versions of Nokia RNCs deployed at orange EG network: 1. RNC 450 – Supports capacity up to 450 Mb/s – Small capacity RNC – was first manufactured in 2001 2.RNC 2600 – Supports capacity up to 2.8 Gb/s – has a very similar structure to RNC 450 (Uses the same cabinet and PIUs) – Was first manufactured in 2008
RNC cabinet mechanical construction • Cabinets • Cooling and power supply equipment • Subracks • Plug-in units • Internal cables The mechanical construction of the IPA2800 network elements is based on M2000 mechanics platform, which follows a standard hierarchy:
RNC cabinet mechanical construction • Two CPD120-A power distribution units at the top of the cabinet, complete with connectors for redundant incoming and outgoing supply lines plus circuit breakers
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- Fall '19
- Management, Configuration management, Asynchronous Transfer Mode, RNC