Downlink Control Signaling to Enable Preemption and CBG-Based (Re)Transmission

Patent metadata

Field	Value
Publication number	US-2018367263-A1
Application number	US-201816008426-A
Country	US
Kind code	A1
Filing date	Jun 14, 2018
Priority date	Jun 15, 2017
Publication date	Dec 20, 2018
Grant date	—

Abstract

A method includes configuring, by a base station, at least one of: a first timing indicator indicating a first delay between a downlink (DL) grant for a codeblock group (CBG)-based transmission and the CBG-based transmission; a second timing indicator indicating a second delay between the CBG-based transmission and a hybrid automatic repeat request acknowledgement (HARQ-ACK) for the CBG-based transmission; and a third timing indicator indicating a third delay between the CBG-based transmission and another DL grant for a pre-Acknowledgement/Non-Acknowledgement (pre-A/N) retransmission of the CBG. The method also includes transmitting, by the base station, a scheduling downlink control information (DCI) over a physical downlink control channel (PDCCH), the scheduling DCI comprising at least one of the first, second, and third timing indicators.

First claim

What is claimed is:

1 . A method comprising:
configuring, by a base station, at least one of:
a first timing indicator indicating a first delay between a downlink (DL) grant for a codeblock group (CBG)-based transmission and the CBG-based transmission;
a second timing indicator indicating a second delay between the CBG-based transmission and a hybrid automatic repeat request acknowledgement (HARQ-ACK) for the CBG-based transmission; and
a third timing indicator indicating a third delay between the CBG-based transmission and another DL grant for a pre-Acknowledgement/Non-Acknowledgement (pre-A/N) retransmission of the CBG; and
transmitting, by the base station, a scheduling downlink control information (DCI) over a physical downlink control channel (PDCCH), the scheduling DCI comprising at least one of the first, second, and third timing indicators.

2 . The method of claim 1 , further comprising at least one of:
transmitting, by the base station, the DL grant; transmitting, by the base station, a CBG over a physical downlink shared channel (PDSCH) after the first delay from the DL grant; transmitting, by the base station, the another DL grant after the third delay from the CBG-based transmission; and receiving, by the base station, the HARQ-ACK after the second delay from the CBG-based transmission.

3 . The method of claim 1 , further comprising:
configuring, by the base station, a fourth timing indicator for codeblock preemption, the fourth timing indicator indicating a fourth delay between a preemption of at least a portion of a codeblock and a preemption indication (PI); and transmitting, by the base station, a DCI for PI comprising the fourth timing indicator.

4 . The method of claim 3 , wherein the scheduling DCI includes information of the DCI for PI.

5 . The method of claim 4 , wherein the scheduling DCI includes information indicating at least one of:
a fifth delay between the scheduling DCI and the DCI for PI; a search space for monitoring the DCI for PI; and at least one PDCCH resource for the DCI for PI.

6 . The method of claim 3 , wherein the DCI for PI includes information of the scheduling DCI.

7 . The method of claim 6 , wherein the DCI for PI includes information indicating at least one of:
a sixth delay between the DCI for PI and the scheduling DCI; a search space for monitoring the scheduling DCI; and one or more PDCCH resources for the scheduling DCI.

8 . A base station comprising:
a non-transitory machine-readable medium storing computer-executable instructions; a processor configured coupled to the non-transitory computer-readable medium, and configured to execute the computer-executable instructions to:
configure at least one of:
a first timing indicator indicating a first delay between a downlink (DL) grant for a codeblock group (CBG)-based transmission and the CBG-based transmission;
a second timing indicator indicating a second delay between the CBG-based transmission and a hybrid automatic repeat request acknowledgement (HARQ-ACK) for the CBG-based transmission; and
a third timing indicator indicating a third delay between the CBG-based transmission and another DL grant for a pre-Acknowledgement/Non-Acknowledgement (pre-A/N) retransmission of the CBG; and

transmit a scheduling downlink control information (DCI) over a physical downlink control channel (PDCCH), the scheduling DCI comprising at least one of the first, second, and third timing indicators.

9 . The base station of claim 8 , wherein the processor is further configured to execute the computer-executable instructions to:
transmit the DL grant; transmit a CBG over a physical downlink shared channel (PDSCH) after the first delay from the DL grant; transmit the another DL grant after the third delay from the CBG-based transmission; or receive the HARQ-ACK after the second delay from the CBG-based transmission.

10 . The base station of claim 8 , wherein the processor is further configured to execute the computer-executable instructions to:
configure a fourth timing indicator for codeblock preemption, the fourth indicator indicating a fourth delay between a preemption of at least a portion of a codeblock and a preemption indication (PI); and transmit a DCI for PI comprising the fourth timing indicator.

11 . The base station of claim 10 , wherein the scheduling DCI includes information of the DCI for PI.

12 . The base station of claim 11 , wherein the scheduling DCI includes information indicating at least one of:
a fifth delay between the scheduling DCI and the DCI for PI; a search space for monitoring the DCI for PI; and at least one PDCCH resource for the DCI for PI.

13 . The base station of claim 10 , wherein the DCI for PI includes information of the scheduling DCI.

14 . The base station of claim 13 , wherein the DCI for PI includes information indicating at least one of:
a sixth delay between the DCI for PI and the scheduling DCI; a search space for monitoring the scheduling DCI; and one or more PDCCH resources for the scheduling DCI.

15 . A method comprising:
receiving, by a user equipment (UE), a scheduling downlink control information (DCI) over a physical downlink control channel (PDCCH), the scheduling DCI comprising at least one of:
a first timing indicator indicating a first delay between a downlink (DL) grant for a codeblock group (CBG)-based transmission and the CBG-based transmission;
a second timing indicator indicating a second delay between the CBG-based transmission and a hybrid automatic repeat request acknowledgement (HARQ-ACK) for the CBG-based transmission; and
a third timing indicator indicating a third delay between the CBG-based transmission and another DL grant for a pre-Acknowledgement/Non-Acknowledgement (pre-A/N) retransmission of the CBG;
receiving, by the UE, a CBG over a physical downlink shared channel (PDSCH) after the first delay from the DL grant; and transmitting, by the UE, the HARQ-ACK after the second delay from the CBG-based transmission.

16 . The method of claim 15 , further comprising receiving another DL grant after the third delay after the CBG-based transmission.

17 . The method of claim 15 , further comprising:
receiving, by the UE, a DCI for preemption indication (PI) comprising a fourth timing indicator for codeblock preemption, the fourth indicator indicating a fourth delay between a preemption of at least a portion of a codeblock and a PI.

18 . The method of claim 17 , wherein the scheduling DCI includes information of the DCI for PI.

19 . The method of claim 18 , wherein the scheduling DCI includes information indicating at least one of:
a fifth delay between the scheduling DCI and the DCI for PI; a search space for monitoring the DCI for PI; and at least one PDCCH resource for the DCI for PI.

20 . The method of claim 17 , wherein the DCI for PI includes information of the scheduling DCI.

21 . The method of claim 20 , wherein the DCI for PI includes information indicating at least one of:
a sixth delay between the DCI for PI and the scheduling DCI; a search space for monitoring the scheduling DCI; and one or more PDCCH resources for the scheduling DCI.

22 . A user equipment (UE) comprising:
a non-transitory machine-readable medium storing computer-executable instructions; a processor configured coupled to the non-transitory computer-readable medium, and configured to execute the computer-executable instructions to:

Assignees

• Sharp Laboratories America Inc

Inventors

• Ying Kai
• Aiba Tatsushi
• Kowalski John M

Classifications

• H04W72/23

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04W72/1273

  of downlink data flows · CPC title

• H04L1/1812

  Hybrid protocols; Hybrid automatic repeat request [HARQ] · CPC title

• H04W72/14

  Electricity · mapped topic

• H04L1/1887 Primary

  Scheduling and prioritising arrangements · CPC title