Voice Quality is still become priority in GSM Network While 3G UMTS/WCDMA and 4G LTE focus on Data Packet Services. In this Optimization tips I would like to share how to improve voice quality in GSM Huawei Network based on my experiences in Huawei project in Indonesia.
The Idea to improve Voice quality is by prioritizing voice services in Good TRX. Good TRX means TRX which have less frequency interference and Good TRX module than other TRX in one cell. We can improve quality of Voice services by shifting voice traffic concentrated to a good TRX. Good TRX usually located in BCCH TRX because frequency has more clear and Full Power(No Power control on BCCH TRX). So in this case assume good TRX is BCCH TRX(you can choose other TRX if good TRX are different in your Network).The things that you can prepare are as follow:
1. Do redimensioning channel(Shifting PDTCH Channel to non BCCH TRX)
First action you need is moving data channel(static PDCH) to TRX non BCCH to make sure voice services concentrated in BCCH TRX and other services(PS) handle by other TRX(non BCCH TRX). So in this case PS services is not our priority. We just concentrated to improve Voice services in 2G Network, while PS Services throw handled by 3G Network. The script you need to provide for redimensioning channel by shifting static PDTCH to non BCCH TRX are as follow:
2. Make Priority for TRX BCCH to handle Services by setting GTRXDEV
Second action you need to do is make priority for TRX BCCH to handle services than other TRX.
By this setting Voice services will be concentrated in TRX BCCH(assumed good TRX) and PS services will be in TRX non BCCH. Parameter setting for this action is by setting OPTL to higher value for non BCCH TRX(ex: L0 change to L1). Here are sample of Parameter change for this action:
Detail of parameter:
OPTL: This parameter specifies the TRX priority in channel assignment. The smaller this parameter is, the higher the TRX priority is. For two TRXs with other conditions identical, channels on the TRX with higher priority are preferentially assigned.
By setting OPTL to L1 for TRX non BCCH means you make low priority for TRX non BCCH to handled the services.
Those above step you can try in your GSM Huawei Network to improve Voice Quality Services and also will improve Drop Call Rate in your Network.
You might also Need to know:
- Drop Call Rate Optimization tips in GSM and UMTS/WCDMA
- Trial of Power Control in GSM Huawei for Quality Improvement
- Call Drop Rate improvement by Parameter change in 3G UMTS/WCDMA Huawei Network
- TBF Drop Improvement tips in Huawei GSM
The Idea to improve Voice quality is by prioritizing voice services in Good TRX. Good TRX means TRX which have less frequency interference and Good TRX module than other TRX in one cell. We can improve quality of Voice services by shifting voice traffic concentrated to a good TRX. Good TRX usually located in BCCH TRX because frequency has more clear and Full Power(No Power control on BCCH TRX). So in this case assume good TRX is BCCH TRX(you can choose other TRX if good TRX are different in your Network).The things that you can prepare are as follow:
1. Do redimensioning channel(Shifting PDTCH Channel to non BCCH TRX)
First action you need is moving data channel(static PDCH) to TRX non BCCH to make sure voice services concentrated in BCCH TRX and other services(PS) handle by other TRX(non BCCH TRX). So in this case PS services is not our priority. We just concentrated to improve Voice services in 2G Network, while PS Services throw handled by 3G Network. The script you need to provide for redimensioning channel by shifting static PDTCH to non BCCH TRX are as follow:
2. Make Priority for TRX BCCH to handle Services by setting GTRXDEV
Second action you need to do is make priority for TRX BCCH to handle services than other TRX.
By this setting Voice services will be concentrated in TRX BCCH(assumed good TRX) and PS services will be in TRX non BCCH. Parameter setting for this action is by setting OPTL to higher value for non BCCH TRX(ex: L0 change to L1). Here are sample of Parameter change for this action:
Detail of parameter:
OPTL: This parameter specifies the TRX priority in channel assignment. The smaller this parameter is, the higher the TRX priority is. For two TRXs with other conditions identical, channels on the TRX with higher priority are preferentially assigned.
By setting OPTL to L1 for TRX non BCCH means you make low priority for TRX non BCCH to handled the services.
Those above step you can try in your GSM Huawei Network to improve Voice Quality Services and also will improve Drop Call Rate in your Network.
You might also Need to know:
- Drop Call Rate Optimization tips in GSM and UMTS/WCDMA
- Trial of Power Control in GSM Huawei for Quality Improvement
- Call Drop Rate improvement by Parameter change in 3G UMTS/WCDMA Huawei Network
- TBF Drop Improvement tips in Huawei GSM
Thank you for post.I was looking for something like this.I found it quiet interesting, hopefully you will keep posting such blogs..Keep sharing.Regards,Jobs on Call Center in Hyderabad.
ReplyDeleteYou are welcome. Hope you will find useful content about RF optimization
ReplyDeletei have loved this post its soo good and interesting
ReplyDeleteHi, Can you tell how we can fetch the TRx wise quality and drop counters.
ReplyDeleteVery useful... Thanks
ReplyDelete