Huawei LTE Intelligent VoLTE solution V1.0.pptxVIP

Intelligent VoLTE Solution LTE FDD MO Version: V1.0 Intelligent VoLTE provides seamless voice experience Voice quality enhanced by IIR (Intelligent ?Interference Rejection) Voice coverage enhanced by ICE (Intelligent Coverage Enhanced) Test environment : Shanghai, 2 Cell ,single user ,bandwidth 20M. VOLTE ICE field test result Cell edge MOS: e.g. 2.3-3.8 3-5dB High Capacity Allows HD Experience for Anyone Transient State Talk Spurt Silent Period Talk Spurt w/ data 20 ms 160 ms SID Frame Combination of SPS and DDS further improved VoLTE user capacity Max 50 ms delay Voice Packet SPS DS or DDS D0 (~1000 bit) D0 (~1000 bit) High codec of 23.85kbps creates big packets, which can not be transmitted at cell edge in uplink for the limitation of RB, path loss and terminal power. With intelligent Segment, a larger voice packet can fragment into suitable smaller size according to signal quality and delay requirements of voice .obtaining the coverage gain, while avoiding the voice delay and loss ….. With Huawei intelligent RLC segment ,we can get 1~2 dB coverage gain and with no terminal requirement . Intelligent Coverage Enhanced – Intelligent RLC Segmentation 1~2dB ….. With iRLC Seg. Delay Based No RLC Segmentation, no TTI Bundling RLC Segmentation and HARQ Retransmission D0 (~1000 bit) 20 TTI TTI Bundling D1 D1 D1 D1 D2 D2 D2 D2 D3 D3 D3 D3 D4 D4 D4 D4 VoIP TTI Bundling with RLC Segmentation Intelligent Coverage Enhanced - TTI Bundling with RLC Seg. vs. Packet size can be transmitted TTI Bundling transmit same packets 4 times in one scheduling to expand coverage by increase uplink transmission reliability. TTI Bundling is only enabled at cell edge to save TTIs, eNodeB makes the decision by UE SINR. D2 D1 D3 D4 … D2 D1 D3 D4 Eg. Success rate: 60% 97.44% RLC Segmentation enable first In Cell edge scenario. Intelligent VOLTE –intelligent interference rejection IIR enabled Test environment : Shanghai, 2 Cell ,single user ,bandwidth 20M. In cell