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LTE基础:PDCCH盲检测与DCI和RNTI关系

时间:2015-05-12 来源:中国集群通信网 作者:本站整理 点击:

UE根据在子帧中检测到的具有DCI格式1,1A,1B,1C,1D,2,2A或者UE扩展的DCI格式2B的PDCCH,使用上层定义的传输块数目限制条件来解码在同一子帧中相应的PDSCH。

UE可能设想定位参考信号不在根据用DCI格式1A或者1C的SI-RNTI或者P-RNTI做CRC扰码的PDCCH解码的PDSCH的资源块中出现。

如果UE被高层设置解码具有用SI-RNTI扰码CRC的PDCCH时,UE将根据表7.1-1中定义的任意组合来解码PDCCH和对应的PDSCH。对应于这些PDCCH的PDSCH用SI-RNTI来进行扰码初始化。

盲检测与DCI和RNTI关系如下多张表:

Table 7.1-1:PDCCH and PDSCH configured by SI-RNTI

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

同样道理:

Table 7.1-2:PDCCH and PDSCH configured by P-RNTI

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 (see subclause 7.1.1),  otherwise Transmit diversity

DCI format 1A

Common

If the number of PBCH antenna ports is  one, Single-antenna port, port 0 is used (see subclause  7.1.1), otherwise Transmit diversity (see subclause 7.1.2)

Table 7.1-3:PDCCH and PDSCH configured by RA-RNTI

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 (see subclause  7.1.1), otherwise Transmit diversity (see subclause 7.1.2)

DCI format 1A

Common

If the number of PBCH antenna ports is  one, Single-antenna port, port 0 is used (see subclause  7.1.1), otherwise Transmit diversity (see subclause 7.1.2)

Table 7.1-5: PDCCH and PDSCHconfigured by C-RNTI

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 (see subclause7.1.1)

DCI format 1

UE specific by C-RNTI

Single-antenna port, port 0 (see subclause7.1.1)

Mode 2

DCI format 1A

Common and

UE specific by C-RNTI

Transmit diversity (see subclause 7.1.2)

DCI format 1

UE specific by C-RNTI

Transmit diversity (see subclause 7.1.2)

Mode 3

DCI format 1A

Common and

UE specific by C-RNTI

Transmit diversity (see subclause  7.1.2)

DCI format 2A

UE specific by C-RNTI

Large delay CDD (see  subclause 7.1.3)  orTransmit  diversity (see subclause 7.1.2)

Mode 4

DCI format 1A

Common and

UE specific by C-RNTI

Transmit diversity (see subclause  7.1.2)

DCI format 2

UE specific by C-RNTI

Closed-loop spatial  multiplexing  (see subclause 7.1.4)or Transmit  diversity (see subclause 7.1.2)

Mode 5

DCI format 1A

Common and

UE specific by C-RNTI

Transmit diversity (see subclause  7.1.2)

DCI format 1D

UE specific by C-RNTI

Multi-user MIMO (see subclause 7.1.5)

Mode 6

DCI format 1A

Common and

UE specific by C-RNTI

Transmit diversity (see subclause  7.1.2)

DCI format 1B

UE specific by C-RNTI

Closed-loop spatial multiplexing (see  subclause 7.1.4) 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 (see subclause 7.1.1),  otherwise Transmit diversity (see subclause 7.1.2)

DCI format 1

UE specific by C-RNTI

Single-antenna port; port 5 (see  subclause 7.1.1)

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 (see subclause 7.1.1),  otherwise Transmit diversity (see subclause 7.1.2)

DCI format 2B

UE specific by C-RNTI

Dual layer transmission; port 7 and 8  (see subclause 7.1.5A) or single-antenna port; port 7 or 8 (see subclause  7.1.1)

Table 7.1-6: PDCCH and PDSCHconfigured by SPS C-RNTI

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 (see  subclause 7.1.1)

DCI format 1

UE specific by C-RNTI

Single-antenna port, port 0 (see  subclause 7.1.1)

Mode 2

DCI format 1A

Common and

UE specific by C-RNTI

Transmit diversity (see subclause  7.1.2)

DCI format 1

UE specific by C-RNTI

Transmit diversity (see subclause 7.1.2)

Mode 3

DCI format 1A

Common and

UE specific by C-RNTI

Transmit diversity (see subclause  7.1.2)

DCI format 2A

UE specific by C-RNTI

Transmit diversity (see subclause  7.1.2)

Mode 4

DCI format 1A

Common and

UE specific by C-RNTI

Transmit diversity (see subclause  7.1.2)

DCI format 2

UE specific by C-RNTI

Transmit diversity (see subclause  7.1.2)

Mode 5

DCI format 1A

Common and

UE specific by C-RNTI

Transmit diversity (see subclause  7.1.2)

Mode 6

DCI format 1A

Common and

UE specific by C-RNTI

Transmit diversity (see subclause  7.1.2)

Mode 7

DCI format 1A

Common and

UE specific by C-RNTI

Single-antenna port;  port 5 (see subclause 7.1.1)

DCI format 1

UE specific by C-RNTI

Single-antenna port;  port 5 (see subclause 7.1.1)

Mode 8

DCI format 1A

Common and
 UE specific by C-RNTI

Single-antenna port; port 7(see subclause  7.1.1)

DCI format 2B

UE specific by C-RNTI

Single-antenna port; port 7 or 8 (see  subclause 7.1.1)

Table 7.1-7: PDCCH and PDSCHconfigured by Temporary C-RNTI

DCI format

Search Space

Transmission scheme of PDSCH  corresponding to PDCCH

DCI format 1A

Common and UE specific by  Temporary C-RNTI

If the number of PBCH antenna port is  one, Single-antenna port, port 0 is used (see subclause  7.1.1), otherwise Transmit diversity (see subclause 7.1.2)

DCI format 1

UE specific by Temporary C-RNTI

If the number of PBCH antenna port is  one, Single-antenna port, port 0 is used (see subclause 7.1.1),  otherwise Transmit diversity (see subclause 7.1.2)



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