Cisco Abis And Iub Optimization Over Ip Implementation - Cisco MWR 1941-DC-A Hardware Installation Manual

Chapter 1 Product Overview

Cisco Abis and Iub Optimization over IP Implementation

One solution that mobile wireless operator's find of value is Cisco's ability to optimize RAN backhaul
efficiency (see
bandwidth efficiency by as much as 50%. This means the current traffic loads can be carried using half
as many T1/E1 trunks as are presently used. This allows more voice and data calls to be carried over the
existing RAN backhaul network, eliminating the need for the operator to add expensive new T1/E1
trunks as traffic demands grow. It will also allow a number of existing trunks to be decommissioned,
putting an end to their recurring costs.
Another equally important benefit is that substantial excess capacity is now available in the existing
RAN backhaul network. The operator can reallocate this recovered bandwidth to carry traffic from other
radios, such as UMTS Node Bs, GPRS, EDGE, 1xEV-DO, PWLANs, and other data overlays. This
capability reduces the deployment and operating costs for new technologies, since the operator avoids
the up-front and recurring costs of supplementing backhaul capacity. It also accelerates time to revenue
from deployments of new radio technologies since there is no need for the operator to wait for additional
microwave licenses or leased lines to be supplied.
Compliance with 3GPP2 and 3GPP R5 and R6 transport standards is another appealing aspect of Cisco's
RAN Optimization solution. Cisco converts today's CDMA transport networks into 3GPP2-compliant
IP RAN transport networks, and GSM and R4/R99 UMTS transport networks into R5/R6 IP RAN
transport networks now—and adds multi-radio backhaul compression as well. This means operators can
enjoy the benefits of IP transport in their CDMA, GSM, and R4/R99 UMTS RANs today.
Figure 1-2 Example of Cisco MWR 1941-DC-A Router in a GSM Abis and UMTS Iub Optimization over IP
GSM/GPRS/
EDGE BTS
TDM
ATM
(AAL2/AAL5)
UMTS Node B
(R4/R99)
Cell Site
OL-7872-04
Figure 1-2). For example, Cisco's GSM Abis Optimization solution increases the T1/E1
Cisco
MWR 1941-DC-A
T1/E1
Optimized Abis & lub over IP
Access Network
Cisco MWR 1941-DC-A Mobile Wireless Edge Router Hardware Installation Guide
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TDM
Cisco
ONS 15454
ATM
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Introduction
Mobile
Internet
Edge
1-3