Antenna Sharing Hub User’s Guide
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1. INTRODUCTION TO ANTENNA SHARING HUB
1.1 Antenna Sharing
Deployed multiport antennas consisting of two or more internal RET elements typically has a single AISG Port
interface allowing the control by one BTS/RRH controller. Antenna Sharing is the ability of a multiport antenna to
allow independent control of its internal RET elements to two or more operators.
In some regions, operators are forced to share elements within the networks including antennas due to aesthetic
and/or site space limitations. The CommScope Antenna Sharing Hub or ASH solves the problem where deployed
multiport antennas are not capable of providing antenna sharing.
The CommScope ASH allows internal RET elements of multiport antennas to be shared across multiple
BTS/RRH controllers.
1.2 CommScope Antenna Sharing Hub
The main features of CommScope ASH are:
1. Antenna RET elements can be shared across six independent BTS/RRH controllers.
2. All BTS/RRH control ports are female AISG four pin RS-485 ports with surge protection level 20kV/8kA.
Control ports are labeled ‘A’, ‘B’,’C’, ‘D’, ‘E’ and ‘F’.
3. All BTS/RRH control ports can be independently configured to support either AISG 2.0/3GPP SRET
(Device Type 0x01) or MRET (Device Type 0x11) modes using CommScope Antenna Sharing
Configuration Tool Software.
4. All BTS/RRH control ports supports AISG 2.0/3GPP protocol release versions 6
– 14 when allowed by
connected Antenna RET.
5. Supports up to 24 RET elements from any number of Antenna devices in SRET and MRET modes daisy
chained at ASH output port when two or more BTS/RRH control ports are in use. Supports up to 12 Ret
elements when a single BTS/RRH control port in use.
6. Supports CommScope COMMRET1, COMMRET2, CP RET and Legacy Argus Antennas in their default
protocol mode MRET or SRET. No additional configuration steps to CommScope Antennas are required
for use with CommScope Antenna Share Hub Hardware. CommScope ASH will not modify attached
Ante
nna’s default protocol mode, configuration and other internal settings.
7. Configurable access level
s of “Full Control” or “Restricted Access” on a per BTS/RRH control port basis.
8. Antenna Sharing is applied on a per Antenna Model basis. Up to 16 different configurable Antenna
Sharing settings can be programmed and stored in the ASH. See use scenarios section.
