Fast return to 3 g
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This document discusses a feature called Fast Return to WCDMA (FASTRET3G) that allows user equipment to select a WCDMA network after a call disconnect on a 2G network. This is intended to reduce load on the 2G network by encouraging reselection to 3G, reduce page outage time for subscribers, and improve a key performance indicator for call drops on the secondary dedicated control channel. The document outlines objectives of the feature, that it has no network impact, pre-checks needed before activation like ensuring 2G-3G handover is set up, and plans to test it in a cluster with the highest number of 3G sites and worst 2G call drop rates.
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Fast return to 3 g
- 1. Security Level: Fast Return to WCDMA (FASTRET3G) www.huawei.com HUAWEI TECHNOLOGIES CO., LTD.
- 2. Fast Return to WCDMA after Call Release FAJ 123 149 HUAWEI TECHNOLOGIES CO., LTD. HISILICON SEMICONDUCTOR Page 2
- 3. Present status Feature not active HUAWEI TECHNOLOGIES CO., LTD. HISILICON SEMICONDUCTOR Page 3
- 4. Objective • Reduce SDCCH load in 2G by allowing Ue to select WCDMA after call disconnect on 2G • Reduce page outage time for subscriber • Improve SDCCH drop KPI for the cluster Network Impact •None HUAWEI TECHNOLOGIES CO., LTD. HISILICON SEMICONDUCTOR Page 4
- 5. Pre-Checks • Check from command RLRWP whether the feature is available in the BSC • Check 2G-3G cell reselection and handover is activated • 2G-3G handover relations are defined for all cells • Collection of location update data on 2G and 3G • Collection of other radio statistics • Activation of counter “DISRET3G” to check 2G -3G reselection attempts after feature activation HUAWEI TECHNOLOGIES CO., LTD. HISILICON SEMICONDUCTOR Page 5
- 6. Test Area • • Cluster 3 chosen as the number of 3G sites in the cluster are highest and the 2G SDCCH drop is in worse 2 clusters • HUAWEI TECHNOLOGIES CO., LTD. HISILICON SEMICONDUCTOR The feature can be activated cell wise Present SDCCH drop for Cluster 3 is 0.84 Page 6
- 7. Thank You HUAWEI TECHNOLOGIES CO., LTD. HISILICON SEMICONDUCTOR Page 7