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Cisco MWR 2941 Mobile Wireless Edge Router Software Configuration Guide, Release 12.2(33)MRB
OL-21227-02
Chapter 1 Cisco MWR 2941 Router Overview
Introduction
Introduction
A typical RAN is composed of thousands of base transceiver stations (BTSs)/Node Bs, hundreds of base
station controllers/radio network controllers (BSCs/RNCs), and several mobile switching centers
(MSCs). The BTS/Node Bs and BSC/RNC are often separated by large geographic distances, with the
BTSs/Node Bs located in cell sites uniformly distributed throughout a region, and the BSCs, RNCs, and
MSCs located at suitably chosen Central Offices (CO) or mobile telephone switching offices (MTSO).
The traffic generated by a BTS/Node B is transported to the corresponding BSC/RNC across a network,
referred to as the backhaul network, which is often a hub-and-spoke topology with hundreds of
BTS/Node Bs connected to a BSC/RNC by point-to-point time division multiplexing (TDM) trunks.
These TDM trunks may be leased-line T1/E1s or their logical equivalents, such as microwave links or
satellite channels.
RAN Transport Solutions
The Cisco MWR 2941 Mobile Wireless Router supports a variety of RAN transport solutions, including
the following:
• IP/Multiprotocol Label Switching (MPLS) RAN backhaul: Allows you to create a high-speed
backhaul for a variety of traffic types, including GSM, CDMA, HSPA/LTE, CDMA, EVDO, and
WiMAX networks.
• Cell-site operations support networks: Facilitates telemetry to cell sites for remote operations and
network element management.
• Cell-site IP points of presence (POPs): Allows you to offer IP services and applications at cell sites.
• Carrier Ethernet features including Resilient Ethernet Protocol (REP), Ethernet Connectivity Fault
Management (CFM), Ethernet Local Management Interface (E-LMI), and Ethernet Operations,
Administration, and Maintenance (OAM).
• Network clocking features including PTP, pseudowire-based clocking, and synchronous Ethernet.
• Flexible backhaul transport including MLPPP over T1, E1, xDSL, and Ethernet.