METHOD AND APPARATUS FOR OBTAINING HARQ FEEDBACK AND METHOD AND APPARATUS FOR TRANSMITTING HARQ FEEDBACK

• US 20190312685A1
• Filed: 11/14/2016
• Published: 10/10/2019
• Est. Priority Date: 11/14/2016
• Status: Active Grant

• Current Assignee: Beijing Xiaomi Mobile Software Co., Ltd. (Xiaomi Corp.)
• Original Assignee: Beijing Xiaomi Mobile Software Co., Ltd. (Xiaomi Corp.)
• Inventors: ZHOU, Juejia
• Granted Patent: US 11,362,766 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 1/1854 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 1/1858 Transmission or retransmission of more than one copy of acknowledgement message
• CPC Class Codes: H04L 1/1864 ARQ related signaling H04L1/1607 takes precedence
• CPC Class Codes: H04L 1/1887 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 1/1896 ARQ related signaling
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames

Abstract

The present disclosure provides a method and an apparatus for obtaining HARQ feedback and transmitting HARQ feedback. The method of obtaining HARQ feedback includes: short TTI scheduling information is configured into a first target long TTI according to service requirements; the short TTI scheduling information is sent to second equipment through the first target long TTI; one or more short TTIs in a second target long TTI is scheduled according to the short TTI scheduling information and the scheduled one or more short TTIs are sent to the second equipment; and HARQ feedback for each of the one or more short TTIs which is sequentially sent by the second equipment within the second target long TTI is received. The method provided in the present disclosure may effectively shorten the HARQ feedback latency of short TTIs and improve the flexibility of data transmission.

Claims

1. A method of obtaining hybrid automatic repeat request (HARQ) feedback, which is applied in first equipment, the method comprising:

configuring short transmission time interval (TTI) scheduling information into a first target long TTI according to service requirements, wherein the short TTI scheduling information includes at least location information, length information, quantity information and location information of HARQ feedback resource of a short TTI, the HARQ feedback resource of the short TTI is configured to send HARQ feedback of the short TTI to the first equipment from second equipment;

sending the short TTI scheduling information to the second equipment through the first target long TTI;

scheduling one or more short TTIs in a second target long TTI according to the short TTI scheduling information, and sending the scheduled one or more short TTIs to the second equipment; and

receiving HARQ feedback for each of the one or more short TTIs which is sequentially sent by the second equipment within the second target long TTI.

2. The method in accordance with claim 1, wherein configuring the short TTI scheduling information into the first target long TTI according to service requirements comprises:

monitoring a low-latency service request when data is being transmitted through long TTIs; and

in response to determining that the low-latency service request is monitored, configuring the short TTI scheduling information into the first target long TTI, wherein low-latency service data is to be transmitted in short TTIs.

3. The method in accordance with claim 2, wherein configuring the short TTI scheduling information into the first target long TTI comprises:

configuring the short TTI scheduling information into a control signaling associated with the first target long TTI;

or

configuring the short TTI scheduling information into a data field associated with the first target long TTI and configuring location information of the short TTI scheduling information into a control signaling associated with the first target long TTI, wherein the location information of the short TTI scheduling information is used to indicate a storage location of the short TTI scheduling information in the data field associated with the current long TTI.

4. The method in accordance with claim 3, wherein configuring the short TTI scheduling information into the control signaling associated with the first target long TTI comprises:

configuring scheduling information of all short TTIs in a long TTI into the control signaling associated with the first target long TTI;

or

configuring scheduling information of a first short TTI in a long TTI into the control signaling associated with the first target long TTI, wherein the scheduling information of the first short TTI further comprises indication information for indicating that the first short TTI comprises scheduling information of a subsequent short TTI.

5. The method in accordance with claim 1, wherein when the first target long TTI is configured with scheduling information of all short TTIs in a long TTI, scheduling the one or more short TTIs in the second target long TTI according to the short TTI scheduling information comprises:

according to the scheduling information,

sequentially scheduling each of the one or more short TTIs within the second target long TTI; and

sequentially allocating a HARQ feedback resource for each of the one or more short TTIs.

6. The method in accordance with claim 1, wherein when a control signaling associated with the first target long TTI comprises scheduling information of a first short TTI in a long TTI, scheduling the one or more short TTIs in the second target long TTI according to the short TTI scheduling information comprises:

according to the scheduling information of the first short TTI,

scheduling the first short TTI in the second target long TTI; and

allocating a HARQ feedback resource for the first short TTI;

for the first short TTI to a penultimate short TTI, sequentially performing following operations;

configuring scheduling information of a subsequent short TTI in a sub-control signaling associated with a current short TTI;

wherein the scheduling information of the current short TTI comprises at least length information, location information of HARQ feedback resource and indication information; and

according to the scheduling information of the subsequent short TTI,

scheduling the subsequent short TTI, and

allocating a HARQ feedback resource for the subsequent short TTI.

7. The method in accordance with claim 1, wherein configuring the location information of HARQ feedback resource of a short TTI in the first target long TTI comprises:

configuring a HARQ feedback resource of each short TTI to be immediately adjacent to a tail of the short TTI;

or

when a long TTI has redundant resources after one or more short TTIs are scheduled in the long TTI, assigning a last one of the one or more short TTIs a HARQ feedback resource originally configured for the long TTI.

8. A method of transmitting HARQ feedback, which is applied in second equipment, the method comprising:

obtaining short TTI scheduling information from a first target long TTI, wherein the short TTI scheduling information comprises at least location information, length information, quantity information and location information of HARQ feedback resource of a short TTI, the HARQ feedback resource of a short TTI is configured to transmit HARQ feedback of the short TTI to first equipment from the second equipment; and

according to the short TTI scheduling information, sequentially obtaining each of short TTIs from a second target long TTI and transmitting HARQ feedback to the first equipment through a HARQ feedback resource of each of the short TTIs.

9. The method in accordance with claim 8, wherein obtaining the short TTI scheduling information from the first target long TTI comprises:

monitoring whether each of long TTIs comprises the short TTI scheduling information to obtain a monitoring result;

determining a current long TTI as the first target long TTI when the monitoring result indicates that the current long TTI comprises the short TTI scheduling information; and

analyzing the short TTI scheduling information from the first target long TTI.

10. The method in accordance with claim 8, wherein according to the short TTI scheduling information, sequentially analyzing each of short TTIs from the second target long TTI and transmitting the HARQ feedback to the first equipment through the HARQ feedback resource of each of the short TTIs comprises:

determining the second target long TTI which is scheduled with the short TTIs according to the location information of the short TTIs;

obtaining each of the short TTIs in the second target long TTI according to the length information and the quantity information of the short TTIs;

performing error detection on a data packet of each of the short TTIs to generate HARQ feedback corresponding to the short TTI; and

transmitting the HARQ feedback of each of the short TTIs to the first equipment through a corresponding HARQ feedback resource according to the location information of the HARQ feedback resource.

11. The method in accordance with claim 10, wherein obtaining each of the short TTIs in the second target long TTI according to the length information and the quantity information of the short TTIs comprises:

when the quantity information indicates 1, obtaining a first short TTI in the second target long TTI according to the length information; and

starting from the first short TTI, sequentially performing following operations;

determining whether scheduling information of a current short TTI comprises indication information, wherein the indication information is used to indicate that the current short TTI comprises scheduling information of a subsequent short TTI;

in response to determining that the scheduling information of the current short TTI comprises the indication information,

analyzing the scheduling information of the subsequent short TTI from the obtained current short TTI, and

analyzing the subsequent short TTI from the second target long TTI according to the scheduling information of the subsequent short TTI; and

in response to determining that the scheduling information of the current short TTI does not comprise the indication information, stopping analyzing the short TTI from the second target long TTI.

19. An apparatus for transmitting HARQ feedback, comprising:

a processor; and

a memory storing instructions executable by the processor;

wherein the processor is configured to perform the method of claim 8.

20. The apparatus in accordance with claim 19, wherein the processor is further configured to:

monitor whether each of long TTIs comprises the short TTI scheduling information to obtain a monitoring result;

determine a current long TTI as the first target long TTI when the monitoring result indicates that the current long TTI comprises the short TTI scheduling information; and

analyze the short TTI scheduling information from the first target long TTI.

12. An apparatus for obtaining HARQ feedback, which is applied in first equipment, the apparatus comprising:

a processor; and

a memory storing instructions executable by the processor;

wherein the processor is to;

configure short TTI scheduling information into a first target long TTI according to service requirements, wherein the short TTI scheduling information includes at least location information, length information, quantity information and location information of HARQ feedback resource of a short TTI, the HARQ feedback resource of the short TTI is configured to send HARQ feedback of the short TTI to the first equipment from second equipment;

send the short TTI scheduling information to the second equipment through the first target long TTI;

schedule one or more short TTIs in a second target long TTI according to the short TTI scheduling information and send the scheduled one or more short TTIs to the second equipment; and

receive HARQ feedback for each of the one or more short TTIs which is sequentially sent by the second equipment within the second target long TTI.

13. The apparatus in accordance with claim 12, wherein the processor is further configured to:

monitor a low-latency service request when data is being transmitted through long TTIs; and

configure the short TTI scheduling information into the first target long TTI in response to determining that the low-latency service request is monitored, wherein low-latency service data is to be transmitted in short TTIs.

14. The apparatus in accordance with claim 13, wherein the processor is further configured to:

configure the short TTI scheduling information into a control signaling associated with the first target long TTI;

or

configure the short TTI scheduling information into a data field associated with the first target long TTI and configure location information of the short TTI scheduling information into a control signaling associated with the first target long TTI, wherein the location information of the short TTI scheduling information is used to indicate a storage location of the short TTI scheduling information in the data field associated with current long TTI.

15. The apparatus in accordance with claim 14, wherein the processor is further configured to:

configure scheduling information of all short TTIs in a long TTI into the control signaling associated with the first target long TTI;

or

configure scheduling information of a first short TTI in a long TTI into the control signaling associated with the first target long TTI, wherein the scheduling information of the first short TTI further comprises indication information for indicating that the first short TTI comprises scheduling information of a subsequent short TTI.

16. The apparatus in accordance with claim 12, wherein the processor is further configured to:

when the first target long TTI is configured with scheduling information of all short TTIs in a long TTI, according to the scheduling information, sequentially schedule each of the one or more short TTIs within the second target long TTI and sequentially allocate a HARQ feedback resource for each of the one or more short TTIs.

17. The apparatus in accordance with claim 12, wherein

when a control signaling associated with the first target long TTI comprises scheduling information of a first short TTI in a long TTI, the processor is further configured to:

according to the scheduling information of the first short TTI, schedule the first short TTI in the second target long TTI and allocate a HARQ feedback resource for the first short TTI; and

for the first short TTI to a last penultimate short TTI;

configure scheduling information of a subsequent short TTI into a sub-control signaling associated with a current short TTI;

wherein the scheduling information of the current short TTI comprises at least length information, location information of HARQ feedback resource and indication information; and

schedule the subsequent short TTI and allocate a HARQ feedback resource for the subsequent short TTI according to the scheduling information of the subsequent short TTI.

18. The apparatus in accordance with claim 12, wherein the processor is further configured to:

configure a HARQ feedback resource of each short TTI to be immediately adjacent to a tail of the short TTI;

or

assign a last one of the one or more short TTIs a HARQ feedback resource originally configured for a long TTI.

21-24. -24. (canceled)