RUS¶

The RUS is a multi-standard Radio Unit in the RBS6xxx family. Depending on the associated Digital Unit (baseband), it can provide GSM, WCDMA or LTE carriers. It offers 20 MHz of RF bandwidth and has a wideband multi-channel power amplifier (MCPA).

If used for GSM (such as driven by a DUG 20), it can operate 4 soft-TRX inside one RUS.

RF Side¶

The RUS has a band-width of 20MHz, and there can be multiple "sofware defined" RF carriers within that band-width. In case of GSM, it can have four TRX/carriers in that band.

The standard RUS unit permits a TX power of 20W. However, using software licenses, the power can be increased to 40W or even 60W.

front-haul¶

The RUS has two CPRI links, each with their own proprietary connector. They don't have a SFP slot, as interconnection with the DUL/DUW/DUG20 is happening over short (less than 0.5m) copper patch cables. However, as the DU side is a SFP form-factor, the signals are assumed to be identical, just on a different mechanical connector.

The cable between standard SFP (DU side) and RUS proprietary connector is called "RPM 777 211/00900".

Models¶

RUS 01¶

RUS_01_B3 has more pictures

• 60W max power
• 1 TX/RX and 1 RX branch
• GSM: 1-4 carriers UL/DL with diversity
• WCDMA: 1-4 carriers UL/DL with diversity
• LTE: 20MHz
• 400W power consumption (max)
• 7.1kg

Power consumption¶

Measurements were taken using a RUS 01 B8.

Number of TRX	RF Output Power (per TRX)	DC Power Consumption (@ 50V)
1	30 dBm	137W
4	30 dBm	155W
1	42 dBm	192W
2	42 dBm	230W
3	42 dBm	270W
4	42 dBm	315W

RUS 02¶

• 80W max power
• 1 TX/RX and 1 X branch
• GSM: 1-8 carriers UL/DL with diversity
• WCDMA: 1-4 carriers UL/DL with diversity
• LTE: 20 MHz
• 7.1 kg

Power consumption¶

Measurements were taken using a RUS 02 B8.

MCTR	Number of TRX	RF Output Power (per TRX)	DC Power Consumption (@ 50V)
1x4	4	30 dBm	175 W
1x4	4	40 dBm	270 W
1x4	4	42 dBm	325 W
1x4	4	43 dBm	390 W
1x4	3	43 dBm	330 W
1x4	2	43 dBm	275 W
1x4	1	43 dBm	220 W
1x4	4	44 dBm	435 W
1x8	8	40 dBm	360 W
1x8	8	30 dBm	350 W

RUS 1x¶

• 2TX/2RX chains