User Manual v1.0
Corning Restricted and Confidential Proprietary - Controlled content
BWS Draft2 LPR UM - 29-DEC-2019| September 2019
|Page 13 of 29
1.3
Overview: about BWS 1.0 Architecture
BWS fully digital platform incorporates integrated capacity source Base Band Units (BBU) with the digital
distribution units – Digital Router Unit (DRU) and Low Power Radio (LPR) units. The solution enables multi
band and multi operator support, high scalability (both, in capacity and coverage) and provides simple
migration paths to future technologies.
BWS 1.0 supports:
•
BBUs: Up to four high capacity sources per DRU
•
LPR (Remotes): Up to 32 low power units per DRU
•
DRUs: Up to four DRUs connected per BBU
•
Synchronization: 10 MHz clock domain
1.3.1
Architecture and Interfaces
BWS system connects externally, through the BBU, towards Core Network Providers’ Evolved Packet Core
(EPC), over the S1 interface.
Internally, the BWS units are connected via Common Public Radio Interface (CPRI) lines.
The system internal configuration and management allows user access flexibility, and is done through BBU
and DRU units, according to the needs.
The following figure shows an example of the system’s internal and external connectivity.
Figure 1 System Block Diagram
DRU
BBU
BBU
LPR
LPR
DRU
DRU
Core Network
provider2
Core Network
provider1
Up to 32
LPR
LPR
Up to 32
LPR
LPR
Up to 32
Legend:
CPRI (I/Q +C&M)
S1 Interface
