Coordinating Inter-cell Interference through Positive Feedback for LTE-Advanced Uplink Transmission
碩士 === 國立成功大學 === 資訊工程學系碩博士班 === 101 === In Orthogonal Frequency Division Multiplex based system, inter-cell interference is an important issue, which impacts signal quality between evolved NodeBs and user equipments (UEs), especially for UEs at cell edge. In order to relieve this issue for uplink i...
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| Format: | Others |
| Language: | en_US |
| Published: |
2013
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| Online Access: | http://ndltd.ncl.edu.tw/handle/57237308898072889578 |
| Summary: | 碩士 === 國立成功大學 === 資訊工程學系碩博士班 === 101 === In Orthogonal Frequency Division Multiplex based system, inter-cell interference is an important issue, which impacts signal quality between evolved NodeBs and user equipments (UEs), especially for UEs at cell edge. In order to relieve this issue for uplink in Long Term Evolution-Advanced system, Third Generation Partnership Project defines high interference indicator (HII) and overload indicator (OI) to coordinate interference. HII provides negative feedback to prevent inappropriate resource allocation. OI is used to notify neighboring cells of an interference overload event.
In this thesis, we investigate the performance of existing schemes based on HII and OI. Then we propose a scheme with positive feedback by introducing a new indicator to work with HII and OI to ensure improvement of system performance. Simulation results show that our scheme can effectively enhance average uplink throughput of cell edge UEs as well as the total uplink throughput.
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