Radio Communications Method, Base Station, and Terminal

• US 20190045528A1
• Filed: 03/31/2016
• Published: 02/07/2019
• Est. Priority Date: 03/31/2016
• 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: Xu, Kai, Li, Xiaocui
• Granted Patent: US 10,959,254 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 1/18 Automatic repetition systems, e.g. Van Duuren systems
• CPC Class Codes: H04L 27/0006 Assessment of spectral gaps suitable for allocating digitally modulated signals, e.g. for carrier allocation in cognitive radio for spectrum sharing between different networks H04W16/14
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0082 at predetermined intervals
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/12 Wireless traffic scheduling
• CPC Class Codes: H04W 72/1268 of uplink data flows
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/52 based on load

Abstract

A radio communications method, a base station, and a terminal, where the base station sends downlink control information to the terminal, where the downlink control information includes uplink scheduling indication information, and the uplink scheduling indication information instructing the terminal to send uplink data in a plurality of uplink sub frames on at least one unlicensed carrier, such that the terminal sends uplink data in a plurality of uplink subframes on one or more corresponding unlicensed carriers based on the uplink scheduling indication information, thereby implementing scheduling, using uplink scheduling indication information in one piece of downlink control information, of a plurality of uplink subframes to perform uplink transmission. This increases a data volume in data transmission while effectively reducing scheduling signaling overheads.

Claims

1. A radio communications method, comprising:

sending, by a base station, downlink control information to a terminal, the downlink control information comprising uplink scheduling indication information, and the uplink scheduling indication information instructing the terminal to send uplink data in a plurality of uplink subframes on at least one unlicensed carrier; and

receiving, by the base station, the uplink data in the uplink subframes on the at least one unlicensed carrier.

2. The method of claim 1, wherein sending the downlink control information to the terminal comprises sending, by the base station, the downlink control information to the terminal using an unlicensed carrier or a licensed carrier.

3. The method of claim 1, wherein sending the downlink control information to the terminal comprises sending, by the base station, one piece of the downlink control information to the terminal using one downlink subframe.

4. The method of claim 1, wherein sending the downlink control information to the terminal comprises sending, by the base station, a plurality of pieces of the downlink control information to the terminal using one downlink subframe, a carrier corresponding to the one downlink subframe comprising an unlicensed carrier and a licensed carrier, each piece of the downlink control information comprising a piece of the uplink scheduling indication information, and each piece of the uplink scheduling indication information instructing the terminal to send the uplink data in at least one uplink subframe on the at least one unlicensed carrier.

5. The method of claim 1, wherein the uplink scheduling indication information comprises start uplink subframe location information and a quantity of consecutive uplink subframes,

6. The method of claim 5, wherein the uplink scheduling indication information further comprises a start uplink subframe period and a start uplink subframe offset.

7. The method of claim 5, wherein the uplink scheduling indication information further comprises a carrier index.

8. The method of claim 1, further comprising sending, by the base station, radio resource control signaling to the terminal, the radio resource control signaling comprising system configuration information, the system configuration information comprising, a quantity of consecutive uplink subframes and a start uplink subframe period, and the uplink scheduling indication information comprising start uplink subframe location information and a start uplink subframe offset.

9. The method of claim 1, wherein a difference between an index of a downlink subframe for sending the uplink scheduling indication information and an index of a scheduled uplink subframe comprises a variable integer value.

10. The method of claim 1, wherein a scheduled uplink subframe and a downlink subframe for sending the downlink control information fall within a same maximum channel occupancy time (MCOT).

11. A radio communications method, comprising:

receiving, by a terminal, downlink control information comprising uplink scheduling indication information from a base station; and

sending, by the terminal, uplink data in a plurality of uplink subframes on at least one unlicensed carrier based on the uplink scheduling indication information.

12. The method of claim 11, wherein receiving the downlink control information comprising receiving, by the terminal, the downlink control information from the base station using an unlicensed carrier.

13. The method of claim 11, wherein receiving the downlink control information comprises receiving, by the terminal, a plurality of pieces of the downlink control information from the base station using one downlink subframe, a carrier corresponding to the downlink subframe comprising an unlicensed carrier and a licensed carrier, each piece of tie downlink control information comprising a piece of the uplink scheduling indication information, sending the uplink data in the uplink subframes on the at least one unlicensed carrier comprising sending, by the terminal, the uplink data separately in the uplink subframes on one unlicensed carrier based on a plurality of pieces of the uplink scheduling indication information, and the piece of the uplink scheduling indication information comprising a one-to-one correspondence to one uplink subframe.

14. The method of claim 11, further comprising obtaining, by the terminal, uplink subframe start location information and a quantity of consecutive uplink subframes based on the uplink scheduling indication information, and sending the uplink data in the uplink subframes on the at least one unlicensed carrier comprising:

determining, by the terminal, the uplink subframes based on the uplink subframe start location information and the quantity of consecutive uplink subframes; and

sending, by the terminal, the uplink data in the uplink subframes.

15. The method of claim 14, further comprising obtaining, by the terminal, a start uplink subframe period and a start uplink subframe offset based on the uplink scheduling indication information, and sending, the uplink data in the uplink subframes on the at least one unlicensed carrier comprising:

determining, by the terminal, the uplink subframes based on the uplink subframe start location information, the quantity of consecutive uplink subframes, the start subframe period, and the start uplink subframe offset; and

sending, by the terminal, the uplink data in the uplink subframes.

16. The method of claim 14, further comprising obtaining, by the terminal, a carrier index based on the uplink scheduling indication information, and sending the uplink data in the uplink subframes on at least one unlicensed carrier comprising:

determining, by the terminal, the uplink subframes on a plurality of unlicensed carriers based on the uplink subframe start location information, the quantity of consecutive uplink subframes, and the carrier index; and

sending, by the terminal, the uplink data in the uplink subframes on the unlicensed carriers.

17. The method of claim 11, wherein the uplink scheduling indication information comprises start uplink subframe location information and a start uplink subframe offset, and the method further comprising:

receiving, by the terminal, radio resource control signaling comprising system configuration information from the base station; and

obtaining, by the terminal, a quantity of consecutive uplink subframes and a start uplink subframe period based on the system configuration information, and

sending the uplink data in the uplink subframes on the at least one unlicensed carrier comprising sending, by the terminal, the uplink data in the uplink subframes on the at least one unlicensed carrier based on the radio resource control signaling and the uplink scheduling indication information.

18. The method of claim 11, wherein a difference between an index of a downlink subframe in which the terminal receives the uplink scheduling indication information and an index of a scheduled uplink subframe comprises a variable integer value.

19. The method of claim 11, wherein a scheduled uplink and downlink subframe for receiving the uplink scheduling indication information fall within a same maximum channel occupancy time (MCOT).

37. The method of claim 11, wherein receiving the downlink control information comprises receiving, by the terminal, the downlink control information from the base station using a licensed carrier.

20-36. -36. (canceled)