ZTE Corporation ZXMBW-R9100 Manuale Utente
Chapter 3 Protocol Interface Description
PHY Layer of R1 Protocol Stack
Description
The PHY layer of R1 protocol stack contains multiple regulations.
Each regulation corresponds to a specific frequency range and ap-
plication.
Each regulation corresponds to a specific frequency range and ap-
plication.
The PHY layer of R1 protocol stack is based on the modulating
mode of Orthogonal Frequency Division Multiplexing (
mode of Orthogonal Frequency Division Multiplexing (
).
Baseband-RF Interface
Baseband-RF Interface Functions
The ZXMBW R9100 baseband-RF interface performs the following
functions:
functions:
�
Data transmission from fiber-optical interfaces
�
Downlink I/Q data signals from the Base station Baseband
Unit (
Unit (
).
�
Uplink I/Q signals received by the ZXMBW R9100.
�
Exchange of control signaling
�
ZXMBW R9100 running status measurement signaling and
measurement result feedback.
measurement result feedback.
�
Reset signaling and execution feedback of all boards in the
R01P.
R01P.
�
Link test, alarm report and processing between the ZXMBW
R9100 and the BBU .
R9100 and the BBU .
�
Interaction of configuration signaling
�
I/Q channel configuration.
�
Frequency point initiation and reallocation.
�
RF power configuration, timely report of launched power,
and report of Received Signal Strength Indicator (RSSI)
measurement.
and report of Received Signal Strength Indicator (RSSI)
measurement.
�
Configuration and re-configuration of environment moni-
toring threshold.
toring threshold.
OBSAI Frame Structure
Overview
The three layers of an Open Base Station Architecture Initiative
(
(
) frame are Message Frame, Message Group (
) and Mas-
ter Frame.
Message Frame
Message Frame is the basic unit of an OBSAI . The total length
of the frame is 19 bytes, and is composed of address, type, time
stamp (T-Stamp) and payload.
of the frame is 19 bytes, and is composed of address, type, time
stamp (T-Stamp) and payload.
Confidential and Proprietary Information of ZTE CORPORATION
31