Method and apparatus for sending uplink/downlink scheduling information, and method and apparatus for receiving uplink/downlink scheduling information

• US 10,638,500 B2
• Filed: 05/07/2018
• Issued: 04/28/2020
• Est. Priority Date: 02/01/2011
• 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: Guan, Lei, Liu, Wenji
• Primary Examiner(s): Lai, Andrew
• Assistant Examiner(s): Nguyen, Chuong M
• Application Number:
  US15/972,470
• Publication Number:
  US 20180255565A1
• Time in Patent Office: 722 Days
• CPC Class Codes: H04L 5/0037 Inter-user or inter-terminal allocation
• CPC Class Codes: H04L 5/0073 Allocation arrangements that take into account other cell interferences for intercell interference mitigation or co-ordination in orthogonal multiplex systems H04J11/005
• CPC Class Codes: H04W 72/12 Wireless traffic scheduling
• CPC Class Codes: H04W 72/1268 of uplink data flows
• CPC Class Codes: H04W 72/1273 of downlink data flows
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

A method and an apparatus for sending uplink/downlink scheduling information, and a method and an apparatus for receiving uplink/downlink scheduling information are provided. The method for sending downlink scheduling information includes: determining, in downlink subframes on a second carrier, a first downlink subframe, in which at time corresponding to the first downlink subframe, a subframe on a first carrier is an uplink subframe; and sending, on a fifth downlink subframe on the first carrier, downlink scheduling information corresponding to the first downlink subframe on the second carrier to a terminal, in which time corresponding to the fifth downlink subframe is prior to the time corresponding to the first downlink subframe. The present invention achieves the purpose of performing uplink and downlink scheduling on a second carrier through a first carrier bearing a PDCCH.

Claims

1. A method for sending uplink scheduling information, comprising:

sending, on a sixth downlink subframe on a first carrier, uplink scheduling information corresponding to a first uplink subframe on a second carrier to a terminal, wherein a time corresponding to the sixth downlink subframe is prior to a time corresponding to the first uplink subframe, wherein a subframe which is different from the sixth downlink subframe on the first carrier is an uplink subframe, a time corresponding to the subframe is prior to the time corresponding to the first uplink subframe on the second carrier, and the time corresponding to the subframe on the first carrier and the time corresponding to the first uplink subframe on the second carrier are spaced by a time interval needed for scheduling the first uplink subframe on the second carrier during non-cross-carrier scheduling.

2. The method for sending uplink scheduling information according to claim 1,

wherein the sixth downlink subframe is one of a plurality of downlink subframes that a latency between the time corresponding to the sixth downlink subframe and the time corresponding to the first uplink subframe on the second carrier is minimum compared to a latency between the time corresponding to another of the plurality of downlink subframes and the time corresponding to the first uplink subframe on the second carrier, and the sixth downlink subframe and the first uplink subframe are spaced by at least N subframes, wherein the N is the number of subframes spaced between receiving, by the terminal, the uplink scheduling information and sending, by the terminal, uplink data corresponding to the uplink scheduling information.

3. The method for sending uplink scheduling information according to claim 1, wherein the sixth downlink subframe bears uplink scheduling information corresponding to the first uplink subframe on the second carrier.

4. The method for sending uplink scheduling information according to claim 1, further comprises:

indicating a cross-carrier uplink scheduling type of the sixth downlink subframe on the first carrier to the terminal through a newly added bit, a newly added scrambling code, a carrier indicator field, transmit power control, a downlink assignment indication, or an uplink index in a physical downlink control channel.

5. The method for sending uplink scheduling information according to claim 1, wherein at the time corresponding to the sixth downlink subframe, a subframe on the second carrier does not bear the uplink scheduling information during the non-cross-carrier scheduling.

6. The method for sending uplink scheduling information according to claim 1, further comprising:

indicating a cross-carrier uplink scheduling type of the sixth downlink subframe on the first carrier to the terminal through radio resource control signaling, media access control signaling, a search space of a physical downlink control channel or scheduling time of the physical downlink control channel.

7. A method for receiving uplink scheduling information, comprising:

on a sixth downlink subframe that is on a first carrier and that is at a time prior to that of a first uplink subframe, receiving uplink scheduling information sent by a base station and is corresponding to the first uplink subframe on a second carrier, wherein a subframe, which is different from the sixth downlink subframe, on the first carrier is an uplink subframe, a time corresponding to the subframe is prior to the time corresponding to the first uplink subframe on the second carrier, and the time corresponding to the subframe on the first carrier and the time corresponding to the first uplink subframe on the second carrier are spaced by a time interval needed for scheduling the first uplink subframe on the second carrier during non-cross-carrier scheduling; and

sending, on the first uplink subframe on the second carrier, uplink data corresponding to the uplink scheduling information according to the received uplink scheduling information.

8. The method for receiving uplink scheduling information according to claim 7, wherein the sixth downlink subframe is one of a plurality of downlink subframes that a latency between the time corresponding to the sixth downlink subframe and the time corresponding to the first uplink subframe on the second carrier is minimum compared to a latency between the time corresponding to another of the plurality of downlink subframes and the time corresponding to the first uplink subframe on the second carrier, and the sixth downlink subframe and the first uplink subframe are spaced by at least N subframes, wherein the N is the number of subframes spaced between receiving, by the terminal, the uplink scheduling information and sending, by the terminal, uplink data corresponding to the uplink scheduling information;

or

at the time corresponding to the sixth downlink subframe, a subframe on the second carrier does not bear the uplink scheduling information during the non-cross-carrier scheduling.

9. The method for receiving uplink scheduling information according to claim 7, wherein the sixth downlink subframe bears uplink scheduling information corresponding to the first uplink subframe on the second carrier.

10. The method for receiving uplink scheduling information according to claim 7, further comprising:

receiving a cross-carrier uplink scheduling type of the sixth downlink subframe, wherein the cross-carrier uplink scheduling type is indicated by a newly added bit, a newly added scrambling code, a carrier indicator field, transmit power control, or an uplink assignment indication in a physical downlink control channel;

or indicated by radio resource control signaling, media access control signaling, a search space of a physical downlink control channel or a scheduling time of the physical downlink control channel.

11. The method for receiving uplink scheduling information according to claim 10, wherein

the sending, on the first uplink subframe on the second carrier, uplink data corresponding to the uplink scheduling information according to the received uplink scheduling information comprises:

sending, on the first uplink subframe on the second carrier, the uplink data corresponding to the uplink scheduling information according to the cross-carrier uplink scheduling type of the sixth downlink subframe and the received uplink scheduling information.

12. A non-transitory computer-readable medium storing computer executable instructions, which when executed by a computer, cause an apparatus comprising the computer to execute a method comprising:

sending, on a sixth downlink subframe on a first carrier, uplink scheduling information corresponding to a first uplink subframe on a second carrier to a terminal, wherein a time corresponding to the sixth downlink subframe is prior to a time corresponding to the first uplink subframe, wherein a subframe which is different from the sixth downlink subframe on the first carrier is an uplink subframe, a time corresponding to the subframe is prior to the time corresponding to the first uplink subframe on the second carrier, and the time corresponding to the subframe on the first carrier and the time corresponding to the first uplink subframe on the second carrier are spaced by a time interval needed for scheduling the first uplink subframe on the second carrier during non-cross-carrier scheduling.

13. The non-transitory computer-readable medium according to claim 12,

wherein the sixth downlink subframe is one of a plurality of downlink subframes that a latency between the time corresponding to the sixth downlink subframe and the time corresponding to the first uplink subframe on the second carrier is minimum compared to a latency between the time corresponding to another of the plurality of downlink subframes and the time corresponding to the first uplink subframe on the second carrier, and the sixth downlink subframe and the first uplink subframe are spaced by at least N subframes, wherein the N is the number of subframes spaced between receiving, by the terminal, the uplink scheduling information and sending, by the terminal, uplink data corresponding to the uplink scheduling information.

14. The non-transitory computer-readable medium according to claim 12, wherein the sixth downlink subframe bears uplink scheduling information corresponding to the first uplink subframe on the second carrier.

15. The non-transitory computer-readable medium according to claim 12, further comprising instructions for:

indicating a cross-carrier uplink scheduling type of the sixth downlink subframe on the first carrier to the terminal through a newly added bit, a newly added scrambling code, a carrier indicator field, transmit power control, a downlink assignment indication, or an uplink index in a physical downlink control channel.

16. The non-transitory computer-readable medium according to claim 12, wherein at the time corresponding to the sixth downlink subframe, a subframe on the second carrier does not bear the uplink scheduling information during the non-cross-carrier scheduling.

17. The non-transitory computer-readable medium according to claim 12, wherein further comprising instructions for:

indicating a cross-carrier uplink scheduling type of the sixth downlink subframe on the first carrier to the terminal through radio resource control signaling, media access control signaling, a search space of a physical downlink control channel or scheduling time of the physical downlink control channel.

18. A non-transitory computer-readable medium storing computer executable instructions, which, when executed by a computer, cause an apparatus comprising the computer to execute a method comprising:

on a sixth downlink subframe that is on a first carrier and that is at a time prior to that of a first uplink subframe, receiving uplink scheduling information sent by a base station and is corresponding to the first uplink subframe on a second carrier, wherein a subframe which is different from the sixth downlink subframe on the first carrier is an uplink subframe, a time corresponding to the subframe is prior to the time corresponding to the first uplink subframe on the second carrier and the time corresponding to the subframe on the first carrier and the time corresponding to the first uplink subframe on the second carrier are spaced by a time interval needed for scheduling the first uplink subframe on the second carrier during non-cross-carrier scheduling, the time interval is at least 4 subframes; and

sending, on the first uplink subframe on the second carrier, uplink data corresponding to the uplink scheduling information according to the received uplink scheduling information.

19. The non-transitory computer-readable medium according to claim 18, wherein the sixth downlink subframe is one of a plurality of downlink subframes that a latency between the time corresponding to the sixth downlink subframe and the time corresponding to the first uplink subframe on the second carrier is minimum compared to a latency between the time corresponding to another of the plurality of downlink subframes and the time corresponding to the first uplink subframe on the second carrier, and the sixth downlink subframe and the first uplink subframe are spaced by at least N subframes, wherein the N is the number of subframes spaced between receiving, by the terminal, the uplink scheduling information and sending, by the terminal, uplink data corresponding to the uplink scheduling information;

or

at the time corresponding to the sixth downlink subframe, a subframe on the second carrier does not bear the uplink scheduling information during the non-cross-carrier scheduling.

20. The non-transitory computer-readable medium according to claim 18, wherein the sixth downlink subframe bears uplink scheduling information corresponding to the first uplink subframe on the second carrier.

21. The non-transitory computer-readable medium according to claim 18, the instructions further comprises:

receiving a cross-carrier uplink scheduling type of the sixth downlink subframe, wherein the cross-carrier uplink scheduling type is indicated by a newly added bit, a newly added scrambling code, a carrier indicator field, transmit power control, or an uplink assignment indication in a physical downlink control channel;

or the cross-carrier uplink scheduling type is indicated by radio resource control signaling, media access control signaling, a search space of a physical downlink control channel or a scheduling time of the physical downlink control channel.

22. The non-transitory computer-readable medium according to claim 21, wherein the instructions for sending the uplink data corresponding to the uplink scheduling information according to the received uplink scheduling information comprises:

sending, on the first uplink subframe on the second carrier, the uplink data corresponding to the uplink scheduling information according to the cross-carrier uplink scheduling type of the sixth downlink subframe and the received uplink scheduling information.