Document Title Security Level

1. RRU RF inter-connection

1.1 Definition:

RRU inter-connection is the RF cable inter-connection. The 2 RRU in the same sector

will be inter-connected from RX_in/out port by RX cables.

1.2 Scenario:

If there is only 2 jumpers of 1 antenna system in the same coverage and the cell

configuration is more than S4 or S6 TRX, the RRU or RFU inter-connection will be used.

1.3 Cable:

The cable should be delivered to the site, if the RRU inter-connection is required.

1.4 RX_in/out port

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1.5 Inter-connection cable installation

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2. RRU CPRI cascading

2.1 Definition:

RRU cascading is the CPRI cable or CPRI fiber connection. More than one RRU will be

use the same SFP port of UBRI or BBP board. The cascading cable will be connected to

SFP port.

2.2 Scenario:

More than one RRU will be use the same SFP port of UBRI or BBP board.

2.3 RRU cascading cable and the port

Fiber:

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Document Title Security Level

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