User's Manual

Installation S-Series OmniCell@Home Picocell GSM Implementation Guide 998-1027-01 Rev X2
3.13 Services
Voice GSM FR and EFR
AMR TCH_AFS and TCH_AHS
Data GPRS CS 1-2
E-GPRS MCS1-9
E-GPRS Incremental Redundancy
BS20 at up to 9.6 kbps
Encryption A5/1
System Interfaces: Nokia Abis Interface
Network Interfaces: Onboard router that supports
One wide area network port (RJ-45) for connection to
broadband IP backhaul network
Four local area network switch ports (RJ-45) to provide
connectivity for other devices such as WLAN router, PCs, etc.
4 Installation
4.1 Dimensioning Considerations
Dimensioning of infrastructure domain equipment (S-AGW, S-RS, and S-EMS) is covered
in <<<Doc Set To Be Supplied>>>.
4.1.1 CPE Scaling
For the purpose of planning PicoBTS (CPE) deployment, the following assumptions are
valid:
• Each PicoBTS is configured as a BCCH TRX
• Each PicoBTS supports up to 7 FR voice calls (depending on how many slots are
used for GPRS)
• Each S-AGW has the capability of supporting 40 TRXs
4.1.2 Link Dimensioning
Data traffic on links is implementation dependent, but for the purpose of dimensioning
links, the following information is provided.
• Suggested DSL or cable modem bandwidth available at the PicoBTS is 256 kbps
for both uplink and downlink (calculated minimum under “typical” conditions is 182
kbps)
• A complete and successful registration procedure typically results in traffic load
(from PicoBTS to S-RS) of 14 IP/TCP/SSL packets, for a total of about 1733 bytes
and (from S-RS to PicoBTS) of 12 IP/TCP/SSL packets, for a total of about 2226
bytes. Therefore, the total for both directions is 26 packets, or approximately 4000
bytes.
Note: The S-RS employs a throttling mechanism such that a limited number of registration requests
may be handled concurrently. Each request spawns a temporary thread in the S-RS process,
20 CONFIDENTIAL AND PROPRIETARY RadioFrame Networks, Inc.