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PHYSICAL DOWNLINK CONTROL CHANNEL DESIGN FOR NARROW BAND INTERNET OF THINGS
PHYSICAL DOWNLINK CONTROL CHANNEL DESIGN FOR NARROW BAND INTERNET OF THINGS
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机译:窄带物联网的物理下行控制通道设计
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摘要
Narrowband downlink control channel (NB-PDCCH) design for Narrowband Internet of Thing (IoT) devices is proposed. In one novel aspect, NB-PDCCH spans both first and second slots in the region of legacy physical downlink shared channel (PDSCH). A plurality of physical resource blocks (PRBs) is allocated for NB-PDCCH transmission that carry downlink control information (DCI). Furthermore, each NB-IoT device can be configured with nPRB PRB pairs for NB-PDCCH transmission (e.g., npRB = 1, 2, 4, or 8), and an NB-PDCCH transmission time interval (TTI) is composed by npRB subframes. An NB-PDCCH is encoded and occupies multiple narrowband control channel elements (NCCEs) based on aggregation level. In a preferred embodiment, each PRB pair for NB-PDCCH occupies two NCCEs.
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