Scheduling enhancement in wireless communication

• US 9,955,501 B2
• Filed: 01/08/2015
• Issued: 04/24/2018
• Est. Priority Date: 12/22/2014
• Status: Active Grant

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Inventors: Lei, Haipeng, Shu, Kodo
• Primary Examiner(s): Elliott, IV, Benjamin H
• Application Number:
  US14/592,091
• Publication Number:
  US 20160183293A1
• Time in Patent Office: 1,202 Days
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• 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

Abstract

The subject matter described herein relates to scheduling enhancement in wireless communication. A scheduling grant including an indicator can be generated, for example, at the base station (BS). The indicator included in the scheduling grant identifies multiple carriers to be scheduled with the scheduling grant. Upon receiving the scheduling grant, a device, for example, UE can recognize the multiple carriers scheduled with the single scheduling grant, and can detect corresponding data transmission in the multiple carriers accordingly. Compared with scheduling each carrier with independent scheduling grant, the proposed solution saves control signaling overhead, and thereby alleviates the problems caused by control signaling capacity limitation, and increase peak data rate and system throughput.

Claims

1. A method of wireless communication, comprising:

generating a scheduling grant including a power control parameter and a first indicator, the first indicator indicating multiple carriers to be scheduled with the scheduling grant, the first indicator comprising at least one of;

a bitmap indicating the multiple scheduled carriers, a length of the bitmap being based at least in part on a maximum number of the multiple carriers allowed to be scheduled;

or

an index indicating one of multiple scheduled carrier patterns, the indicated scheduled carrier pattern indicating a combination of multiple carriers to be scheduled with the scheduling grant;

transmitting the scheduling grant to a user equipment in one or more unlicensed bands as a single grant for the combination of multiple carriers; and

transmitting data to the user equipment on the multiple carriers according to the power control parameter included in the scheduling grant, the transmitting the data in the one or more unlicensed bands.

2. The method of claim 1, further comprising:

transmitting the multiple scheduled carrier patterns to the user equipment via radio resource control signaling or system information.

3. The method of claim 1, wherein the generating a scheduling grant comprises:

including a second indicator into the scheduling grant, the second indicator indicating the number of component carriers to be scheduled with the scheduling grant.

4. The method of claim 1, wherein the generating a scheduling grant comprises:

including into the scheduling grant at least one common scheduling parameter to be applied to the multiple carriers.

5. The method of claim 4, wherein the at least one common scheduling parameter includes at least one of:

a modulation and coding scheme, and a physical resource block index.

6. The method of claim 1, wherein the transmitting the scheduling grant comprises transmitting the scheduling grant via a primary component carrier in a licensed band.

7. The method of claim 1, wherein the generating the scheduling grant is responsive to a buffer status.

8. A method of wireless communication, comprising:

receiving a scheduling grant including a power control parameter and a first indicator, the first indicator comprising a bitmap indicating multiple scheduled carriers, a length of the bitmap being based at least in part on a maximum number of carriers allowed to be scheduled with the scheduling grant;

determining multiple carriers scheduled with the scheduling grant based on the first indicator; and

detecting data transmission according to the power control parameter included in the scheduling grant in the multiple carriers according to the scheduling grant, the scheduling grant received in and the data transmission detected in one or more unlicensed bands, and the scheduling grant received as a single grant for the multiple scheduled carriers.

9. The method of claim 8, further comprising:

receiving the bitmap via radio resource control signaling or system information.

10. The method of claim 8, wherein the receiving a scheduling grant comprises:

receiving the scheduling grant including the first indicator and a second indicator, the second indicator indicating the number of component carriers to be scheduled with the scheduling grant, and wherein the determining multiple carriers scheduled with the scheduling grant based on the first indicator comprises;

determining the multiple carriers scheduled with the scheduling grant based on the first indicator and the second indicator.

11. The method of claim 8, further comprising:

detecting, from the scheduling grant, at least one common scheduling parameter to be applied to the multiple carriers.

12. The method of claim 11, wherein the at least one common scheduling parameter includes at least one of:

a modulation and coding scheme, and a physical resource block index.

13. The method of claims 8, wherein the receiving a scheduling grant comprises receiving the scheduling grant via a primary component carrier in a licensed band.

14. The method of claim 8, wherein zeros in the bitmap indicate carriers that are not scheduled and ones in the bitmap indicate carriers that are scheduled by the scheduling grant.

15. An apparatus for wireless communication, comprising:

a scheduling grant generator configured to generate a scheduling grant including a first indicator which indicates multiple carriers to be scheduled with the scheduling grant and at least one common scheduling parameter to be applied to the multiple carriers, the first indicator comprising a table index indicating one of multiple scheduled carrier patterns in a table of the multiple scheduled carrier patterns, the indicated scheduled carrier pattern indicating a combination of multiple carriers to be scheduled with the scheduling grant;

a first transmitter configured to transmit the scheduling grant to a user equipment in one or more unlicensed bands as a single grant for the combination of multiple carriers; and

a second transmitter configured to transmit data to the user equipment on the multiple carriers in the one or more unlicensed bands.

16. The apparatus of claim 15, further comprising:

a third transmitter configured to transmit the multiple scheduled carrier patterns to the user equipment via radio resource control signaling or system information.

17. The apparatus of claim 15, wherein the scheduling grant generator is configured to generate the scheduling grant further including a second indicator, the second indicator indicating the number of component carriers to be scheduled with the scheduling grant.

18. The apparatus of claim 15, wherein the at least one common scheduling parameter includes at least one of:

a modulation and coding scheme, and a physical resource block index.

19. The apparatus of claim 15, wherein the first transmitter is configured to transmit the scheduling grant to user equipment via a primary component carrier in a licensed band.

20. The apparatus of claim 15, wherein the at least one common scheduling parameter includes a common hybrid automatic repeat request (HARQ) parameter.