CONTROL INFORMATION TRANSMISSION METHOD AND DEVICE

• US 20200137736A1
• Filed: 12/27/2019
• Published: 04/30/2020
• Est. Priority Date: 06/30/2017
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Du, Bai, Peng, Jinlin, Zhang, Peng, Islam, Toufiqul
• Granted Patent: US 11,445,488 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 47/245 using preemption
• CPC Class Codes: H04L 5/0005 Time-frequency
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0062 Avoidance of ingress interference, e.g. ham radio channels
• CPC Class Codes: H04L 5/0092 Indication of how the channel is divided
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/569 of the traffic information
• CPC Class Codes: H04W 76/27 Transitions between radio resource control [RRC] states

Abstract

This application provides a control information transmission method and a device, and relates to the wireless communications field, to improve data transmission efficiency. The method includes: determining, by a network device, first indication information, where the first indication information is used to indicate whether information transmission on a first time-frequency resource is affected; sending, by the network device, the first indication information through a physical downlink control channel; and receiving, by a terminal device, the first indication information, and determining, based on the first indication information, whether information transmission on a third time-frequency resource is affected, where the third time-frequency resource is a time-frequency resource that is used for downlink information transmission between the terminal device and the network device.

Claims

1. A method, comprising:

receiving, by a terminal device via radio resource control (RRC) signaling, information of a segmentation method, the information of the segmentation method indicating that a first time-frequency resource comprises a plurality of subsets of time-frequency resources grouped in a time domain or in a frequency domain;

receiving, by the terminal device, first indication information through a physical downlink control channel, wherein the first indication information comprises second indication information with a length of m bits, and each bit of the second indication information indicates whether no transmission to the terminal device is present in one of the plurality of subsets of time-frequency resources, and wherein m is an integer greater than 1; and

determining, by the terminal device based on the segmentation method and the first indication information, a first subset from the plurality of subsets of time-frequency resources, with no transmission to the terminal device present in the first subset.

2. The method according to claim 1, wherein the information of the segmentation method indicates that the first time-frequency resource comprises the plurality of subsets of time-frequency resources grouped in the time domain, each subset comprises a first time domain unit, and a time domain length of the first time domain unit is less than a time domain length of the first time-frequency resource.

3. The method according to claim 2, wherein the first time-frequency resource comprises n second time domain units which are grouped into m first time domain units, wherein n=k*m+r, m, n, and k are positive integers, r is an integer greater than or equal to zero and r is less than m, each of first r first time domain units of the m first time domain units comprises k+1 second time domain units, and each of rest of m−

r first time domain units of the m first time domain units comprises k second time domain units.

4. The method according to claim 1, wherein the information of the segmentation method indicates that the first time-frequency resource comprises the plurality of subsets of time-frequency resources grouped in both the time domain and the frequency domain, and each subset comprises a first frequency domain unit and a first time domain unit.

5. The method according to claim 4, wherein

the first time-frequency resource comprises n second time domain units that are grouped into m1 first time domain units, and the first time-frequency resource comprises f second frequency domain units that are grouped into n1 first frequency domain units, and wherein m1*n1=m;

wherein n=k1*m1+r1, m1, n, and k1 are positive integers, r1 is an integer greater than or equal to zero and r1 is less than m1, each of first r1 first time domain units of the m1 first time domain units comprises k1+1 second time domain units, and each of rest of m1−

r1 first time domain units of the m1 first time domain units comprises k1 second time domain units; and

wherein f=k2*n1+r2, n1, f, and k2 are positive integers, r2 is an integer greater than or equal to zero and r2 is less than n1, each of first r2 first frequency domain units of the n1 first frequency domain units comprises k2+1 second frequency domain units, and each of rest of n1−

r2 first frequency domain units of the n1 first frequency domain units comprises k2 second frequency domain units.

6. The method according to claim 5, wherein m1 is equal to 7 and n1 is equal to 2.

7. The method according to claim 1, wherein m is equal to 14.

8. The method according to claim 1, wherein a time domain length of the first time-frequency resource is equal to a monitoring period of the first indication information.

9. The method according to claim 8, wherein when the first indication information is received at a time represented by an N^th first time domain unit, and a sending interval of the first indication information is equal to a span of T first time domain units, the first time-frequency resource is located in the time domain from an (N−

T)^th first time domain unit to an (N−

1)^th first time domain unit, wherein N and T are positive integers, and T is less than or equal to N.

10. An apparatus comprising:

a processor; and

a non-transitory computer readable medium storing a program to be executed by the processor, the program comprises instructions for;

receiving, via radio resource control (RRC) signaling, information of a segmentation method indicating that a first time-frequency resource comprises a plurality of subsets of time-frequency resources grouped in a time domain or in a frequency domain;

receiving first indication information through a physical downlink control channel, wherein the first indication information comprises second indication information with a length of m bits, and each bit of the second indication information indicates whether no transmission to the apparatus is present in one of the plurality of subsets of time-frequency resources, and wherein m is an integer greater than 1; and

determining, based on the segmentation method and the first indication information, a first subset from the plurality of subsets of time-frequency resources, with no transmission to the apparatus present in the first subset.

11. The apparatus according to claim 10, wherein the information of the segmentation method indicates that the first time-frequency resource comprises the plurality of subsets of time-frequency resources grouped in the time domain, each subset comprises a first time domain unit, and a time domain length of the first time domain unit is less than a time domain length of the first time-frequency resource.

12. The apparatus according to claim 11, wherein the first time-frequency resource comprises n second time domain units which are grouped into m first time domain units, wherein n=k*m+r, m, n, and k are positive integers, r is an integer greater than or equal to zero and r is less than m, each of first r first time domain units of the m first time domain units comprises k+1 second time domain units, and each of rest of m−

r first time domain units of the m first time domain units comprises k second time domain units.

13. The apparatus according to claim 10, wherein the information of the segmentation method indicates that the first time-frequency resource comprises the plurality of subsets of time-frequency resources grouped in both the time domain and the frequency domain, and each subset comprises a first frequency domain unit and a first time domain unit.

14. The apparatus according to claim 13, wherein

the first time-frequency resource comprises n second time domain units that are grouped into m1 first time domain units, and the first time-frequency resource comprises f second frequency domain units that are grouped into n1 first frequency domain units, wherein m1*n1=m;

wherein n=k1*m1+r1, m1, n, and k1 are positive integers, r1 is an integer greater than or equal to zero and r1 is less than m1, each of first r1 first time domain units of the m1 first time domain units comprises k1+1 second time domain units, and each of rest of m1−

r1 first time domain units of the m1 first time domain units comprises k1 second time domain units; and

wherein f=k2*n1+r2, n1, f, and k2 are positive integers, r2 is an integer greater than or equal to zero and r2 is less than n1, each of first r2 first frequency domain units of the n1 first frequency domain units comprises k2+1 second frequency domain units, and each of rest of n1−

r2 first frequency domain units of the n1 first frequency domain units comprises k2 second frequency domain units.

15. The apparatus according to claim 14, wherein m1 is equal to 7 and n1 is equal to 2.

16. The apparatus according to claim 10, wherein m is equal to 14.

17. An apparatus comprising:

a processor; and

a non-transitory computer readable medium storing a program to be executed by the processor, the program comprises instructions for;

determining a segmentation method indicating that a first time-frequency resource comprises a plurality of subsets of time-frequency resources grouped in a time domain or in a frequency domain;

notifying the segmentation method to a terminal device via radio resource control (RRC) signaling;

determining first indication information, wherein the first indication information comprises second indication information with a length of m bits, and each bit of the second indication information indicates whether no transmission to the terminal device is present in one of the plurality of subsets of time-frequency resources, and wherein m is an integer greater than 1; and

sending the first indication information to the terminal device through a physical downlink control channel.

18. The apparatus according to claim 17, wherein the first time-frequency resource comprises the plurality of subsets of time-frequency resources grouped in the time domain, each subset comprises a first time domain unit, and a time domain length of the first time domain unit is less than a time domain length of the first time-frequency resource.

19. The apparatus according to claim 18, wherein the first time-frequency resource comprises n second time domain units which are grouped into m first time domain units, wherein n=k*m+r, m, n, and k are positive integers, r is an integer greater than or equal to zero and r is less than m, each of first r first time domain units of the m first time domain units comprises k+1 second time domain units, and each of rest of m−

r first time domain units of the m first time domain units comprises k second time domain units.

20. The apparatus according to claim 17, wherein the first time-frequency resource comprises the plurality of subsets of time-frequency resources grouped in both the time domain and the frequency domain, and each subset comprises a first frequency domain unit and a first time domain unit.