TAILIEUCHUNG - LTE Mobility

The terminal performs continuous measurements on its own and neighboring cells and send measurement reports when required. Once the measurement report is sent the serving eNB can take a handover decision and start the handover preparation phase. When the terminal successfully receives the handover command no more communication is required in the source cell T1 is the time from when the handover should occur until it do occur. | LTE Mobility Prepared for LTE seminar (2007-12-06) by EAB/TBU Gunnar Mildh Content of presentation Background, Requirements and Solutions for Intra-LTE mobility Inter-RAT mobility with GERAN/UTRAN Inter-RAT mobility with CDMA2000 Intra-LTE mobility Service requirements on intra-LTE mobility Not so strong compared to other requirements such as user plane latency (< 10 ms), capacity, 3GPP TR only states that the service interruption should be less or equal than GSM CS Looking at possible services today it is difficult to find some services with strong requirements Voice works with < 200 ms TCP should probably cope with 100 ms interruption as long as there are not packet losses Play out buffers for streaming would probably be much larger than 200 ms Requirements for future services are unknown Radio requirements The characteristics of the LTE radio system will lead to quite tough requirements on the intra-LTE mobility solution No soft handover Reuse 1 (potential for strong .

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