4 Data Collection and Drive Test

4 Data Collection

During RF optimization stage, the key is the optimization of radio signals distribution, with the major means of DT and indoor test. Before test, confirm with the NOC/Supervision engineers the following aspects:

· Whether the target NodeBs, RNCs, and related CN are abnormal due to being disabled, blocked, congested, and transmission alarms.

· Whether the alarms have negative impact on the validity of test result data. If the alarms exist, solve the problems before test.

DT is a major test. Collect scanner and UE data of radio signals by DT test. The data is applicable in analyzing coverage, handover, and pilot pollution problems.

Indoor test involves the following areas:

· Indoor coverage areas

Indoor coverage areas include inside buildings, department stores, and subways.

· Inside areas of important facilities

Inside areas of important facilities include gymnasiums and government offices.

· Areas required by the operator

Areas required by the operator include VIC and VIP.

Test the previous areas to locate, analyze, and solve the RF problems.

Indoor test also involves in optimizing handover of indoor and outdoor intra-frequency, inter-frequency, and inter-system.

The DT and indoor test during RF optimization stage is based on VP service. According to the contract (commercial deployment offices) and planning report (trial offices), if seamless coverage by VP service is impossible in areas, such as, suburban areas and rural areas, the test is based on voice services. For areas with seamless coverage by PS384K service or HSDPA service required by the contract (commercial deployment office) or planning report (trial office), such as office buildings, press centers, and hot spot areas, the test is based on the above services.

4.1 Drive Test

4.1.1 DT Types According to different full coverage services in the planned areas, DT might be one of the following:

· 3G ONLY continuous call test by using scanner + unloaded VP According to simulation result and experiences, if the test result meets requirements on VP service coverage, the test result will also meet identical coverage requirements of PS144K, PS128K, and PS64K services.

· 3G ONLY continuous call test by using scanner + unloaded voice service

· 3G ONLY continuous call test by using scanner + unloaded PS384K

· 3G ONLY continuous call test by using scanner + unloaded HSDPA

For setting DT, see the following table.

Index	Meaning
Enable	Whether to implement this index. True for implementation. False for non-implementation.The recommended value is True.

Call Number	Called number. Whether the called terminal supports VP must be confirmed.
Setup Time (s)	The maximum time for setting up calls. It ranges from 20–30s. The recommended value is 25s.
Calling Time (s)	The time for a single call from call start to normal end of call. Set it great enough according to actual DT route. The recommended value is 99999s.
Idle Time (s)	Call internal time. The recommended value is 10s.
Call Count	Total call times. Set it great enough according to actual DT route. The recommended value is 999 times.