GSM UPLINK-DOWNLINK BALANCE OPTIMISATION MANUAL (HUAWEI)

[RFSTUD]

Dear all,
I have attached the uplink-downlink optimization manual for Huawei.

CONTENTS:
1 Precondition and Assumption.. 9
2 Principles of Uplink-Downlink Balance. 11
2.1 Fundamentals of the Uplink-Downlink Balance. 11
2.2 Evaluating the Uplink-Downlink Balance. 12
2.2.1 Theoretical Calculation of Uplink-Downlink Balance on Huawei Devices. 13
2.2.2 Evaluating the Uplink-Downlink Balance With the Uplink-downlink Balance Measurement 14
2.2.3 Evaluating the Uplink-Downlink Balance With the Average Uplink-Downlink Level Difference. 15
2.2.4 Evaluating the Uplink-Downlink Balance With the Uplink-Downlink Level Distribution. 16
2.2.5 Evaluating the Uplink-Downlink Balance With the Uplink-Downlink Cumulative Distribution. 17
2.3 Effects of the Uplink-Downlink Imbalance. 18
3 Factors Affecting the Uplink-Downlink Balance. 19
3.1 Installation of the Feeder and Antenna. 19
3.2 TMA Installation. 19
3.3 Incorrect Parameter Settings. 20
3.4 Hardware Fault 20
3.5 Repeater 21
3.6 Antenna Matching Problem... 21
3.7 Behavior of Mobile Phone Users. 22
4 Analysis Procedure for the Uplink-Downlink Balance. 23
4.1 Abis Signaling Analysis. 23
4.2 Analysis Procedure. 26
4.3 Description of the Analysis Procedure. 28
5 Uplink-Downlink Balance Optimization Cases. 30
5.1 Case 1: Abnormal DDPU Gain. 30
5.2 Case 2: DTRU Software Problem... 31
5.3 Case 3: Inappropriate Parameter Settings. 32
6 Information Required for Uplink-Downlink Balance Problem Feedback.. 33

Hope you find it useful.
Best regards