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發(fā)表于 2020-12-14 19:14:18
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4G(LTE)網(wǎng)絡(luò)中DCI format取決于終端的RNTI與傳輸模式，3GPP在36.213中定義了它們之間的關(guān)系；以RNTI為標(biāo)識(shí)它們之間的關(guān)系如下：
1.DCI與SI-RNTI（38.213-v14.6.0 Table 7.1-1）
DCI format | Search Space | Transmission scheme of PDSCH corresponding to PDCCH | DCI format 1C | Common | If the number of PBCH antenna ports is one, Single-antenna port, port 0 is used , otherwise Transmit diversity . | DCI format 1A | Common | If the number of PBCH antenna ports is one, Single-antenna port, port 0 is used , otherwise Transmit diversity . |
2. DCI與P-RNTI（38.213-v14.6.0 Table 7.1-2）
DCI format | Search Space | Transmission scheme of PDSCH corresponding to PDCCH | | DCI format 1C | Common | If the number of PBCH antenna ports is one, Single-antenna port, port 0 is used, otherwise Transmit diversity | | DCI format 1A | Common | If the number of PBCH antenna ports is one, Single-antenna port, port 0 is used , otherwise Transmit diversity |
3. .DCI與RA-RNTI（38.213-v14.6.0 Table 7.1-3）
DCI format | Search Space | Transmission scheme of PDSCH corresponding to PDCCH | | DCI format 1C | Common | If the number of PBCH antenna ports is one, Single-antenna port, port 0 is used , otherwise Transmit diversity | | DCI format 1A | Common | If the number of PBCH antenna ports is one, Single-antenna port, port 0 is used , otherwise Transmit diversity |
4.DC1與 C-RNTI（38.213-v14.6.0）
Transmission mode | DCI format | Search Space | Transmission scheme of PDSCH corresponding to PDCCH | Mode 1 | DCI format 1A | Common and UE specific by C-RNTI | Single-antenna port, port 0 | DCI format 1 | UE specific by C-RNTI | Single-antenna port, port 0 | Mode 2 | DCI format 1A | Common and UE specific by C-RNTI | Transmit Diversity | DCI format 1 | UE specific by C-RNTI | Transmit Diversity | Mode 3 | DCI format 1A | Common and UE specific by C-RNTI | Transmit Diversity | DCI format 2A | UE specific by C-RNTI | Large delay CDD or Transmit Diversity | Mode 4 | DCI format 1A | Common and UE specific by C-RNTI | Transmit Diversity | DCI format 2 | UE specific by C-RNTI | Closed-loop multiplexing or Transmit Diversity | Mode 5 | DCI format 1A | Common and UE specific by C-RNTI | Transmit Diversity | DCI format 1D | UE specific by C-RNTI | Multi-user MIMO | Mode 6 | DCI format 1A | Common and UE specific by C-RNTI | Transmit Diversity | DCI format 1B | UE specific by C-RNTI | Closed-loop multiplexing using a single transmission layer | Mode 7 | DCI format 1A | Common and UE specific by C-RNTI | If the number of PBCH antenna ports is one, Single-antenna port, port 0 is used , otherwise Transmit diversity | DCI format 1 | UE specific by C-RNTI | Single-antenna port, port 5 | Mode 8 | DCI format 1A | Common and UE specific by C-RNTI | If the number of PBCH antenna ports is one, Single-antenna port, port 0 is used , otherwise Transmit diversity | DCI format 2B | UE specific by C-RNTI | Dual layer transmission, port 7 and 8 or single-antenna port, port 7 or 8 | Mode 9 | DCI format 1A | Common and UE specific by C-RNTI | Non-MBSFN subframe: If the number of PBCH antenna ports is one, Single-antenna port, port 0 is used, otherwise Transmit diversity
MBSFN subframe: Single-antenna port, port 7 | DCI format 2C | UE specific by C-RNTI | Transmit diversity, port 7-8, or dual layer transmission port 7-8 , if UE is configured with higher layer parameter semiOpenLoop, up to 8 layer transmission, ports 7-14 otherwise; or single-antenna port, port 7, 8, 11, or 13 if UE is configured with higher layer parameter dmrs-tableAlt, single-antenna port, port 7 or 8 otherwise | Mode 10 | DCI format 1A | Common and UE specific by C-RNTI | Non-MBSFN subframe: If the number of PBCH antenna ports is one, Single-antenna port, port 0 is used, otherwise Transmit diversity
MBSFN subframe: Single-antenna port, port 7 | DCI format 2D | UE specific by C-RNTI | Transmit diversity, port 7-8, or dual layer transmission port 7-8 , if UE is configured with higher layer parameter semiOpenLoop, up to 8 layer transmission, ports 7-14 otherwise; or single-antenna port, port 7, 8, 11, or 13 if UE is configured with higher layer parameter dmrs-tableAlt, single-antenna port, port 7 or 8 |
5.DCI與 Temporary C-RNTI（38.213-v14.6.0 Table 7.1-7）
DCI format | Search Space | Transmission scheme of PDSCH corresponding to PDCCH | | DCI format 1A | Common and UE specific by C-RNTI | If the number of PBCH antenna port is one, Single-antenna port, port 0 is used , otherwise Transmit diversity | | DCI format 1 | UE specific by C-RNTI | If the number of PBCH antenna port is one, Single-antenna port, port 0 is used , otherwise Transmit diversity |
*各種RNTI定義和用途可參考：[url]https://club.mscbsc.com/t706880p1.html[/url]（終端在5G(NR)網(wǎng)絡(luò)中的RNTI取值和用途）
原文來(lái)自：[url]www.sharetechnote.com[/url]
整理：kangguoying20201214
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