Method and apparatus for performing fractional subframe transmission

• US 9,888,497 B2
• Filed: 01/30/2015
• Issued: 02/06/2018
• Est. Priority Date: 01/30/2015
• Status: Active Grant

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Jiang, Lei, Liu, Hongmei, Wang, Gang, Sun, Zhennian, Jiang, Chuangxin
• Primary Examiner(s): Tweel, Jr., John A
• Application Number:
  US15/302,817
• Publication Number:
  US 20170325261A1
• Time in Patent Office: 1,103 Days
• Field of Search: 34028602
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/003 Arrangements for allocating sub-channels of the transmission path
• 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: H04W 48/12 using downlink control channel
• CPC Class Codes: H04W 52/02 Power saving arrangements in wired systems H04L12/12; signaling of mobile application services, e.g. low battery notifications H04W4/20
• 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 74/002 Transmission of channel access control information
• CPC Class Codes: H04W 74/0808 using carrier sensing, e.g. carrier sense multiple access [CSMA]
• CPC Class Codes: H04W 74/0816 with collision avoidance
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Embodiments of the disclosure provide a method and apparatus for performing fractional subframe transmission. The method may comprise: in response to detecting that a channel becomes available, determining a target position from at least one potential position predefined in a subframe; and performing the fractional subframe transmission from the target position.

Claims

1. A method of performing fractional subframe transmission, comprising:

detecting that a channel becomes available; and

performing the fractional subframe transmission from a target position, wherein the target position is any one of the at least one potential position predefined in a subframe.

2. The method of claim 1, wherein in response to detecting that a channel becomes available, determining a target position from at least one potential position predefined in a subframe comprises:

detecting whether a current position is a potential position;

responsive to that the current position is a potential position, determining the potential position as the target position; and

responsive to that the current position is not a potential position, transmitting a channel occupation signal from the current position until a potential position and determining the potential position as the target position.

3. The method of claim 1, wherein each of the at least one potential position corresponds to a symbol of the subframe periodically.

4. The method of claim 1, wherein performing the fractional subframe transmission from the target position comprises:

sending an indicator at the target position, the indicator indicating a size of control information of the fractional subframe transmission.

5. The method of claim 1, wherein performing the fractional subframe transmission from the target position comprises:

determining a number of available symbols in the subframe based on the target position; and

transmitting control information and data of the fractional subframe transmission from the target position based on the number of the available symbols.

6. The method of claim 5, wherein transmitting control information and data of the fractional subframe transmission from the target position based on the number of the available symbols comprises:

responsive to the number of the available symbols is less than or equal to a predetermined threshold, transmitting the control information and the data in the available symbols and a subframe immediately following the subframe.

7. The method of claim 5, wherein transmitting control information and data of the fractional subframe transmission from the target position based on the number of the available symbols comprises:

determining a transport block size in the subframe based on the number of the available symbols; and

transmitting the data of the transport block size in the subframe.

8. The method of claim 1, wherein performing the fractional subframe transmission from the target position comprises:

obtaining preconfigured scheduling information associated with the target position; and

performing the fractional subframe transmission based on the preconfigured scheduling information.

9. A method of performing fractional subframe transmission, comprising:

receiving the fractional subframe transmission from a target position, wherein the target position is any one of the at least one potential position predefined in a subframe.

10. The method of claim 9, wherein the method further comprises:

making blind decoding for control information of the fractional subframe transmission at one of the at least one potential position; and

in response to that the blind decoding is success, determining the one of the at least one potential position as the target position.

11. The method of claim 9, wherein each of the at least one potential position corresponds to a symbol of the subframe periodically.

12. The method of claim 9, wherein receiving the fractional subframe transmission from the target position comprises:

receiving control information and data of the fractional subframe transmission based on the number of an available symbols, wherein the number of available symbols in the subframe based on the target position.

13. The method of claim 12, wherein receiving control information and data of the fractional subframe transmission based on the number of the available symbols comprises:

responsive to the number of the available symbols is less than or equal to a predetermined threshold, receiving the control information and the data in the available symbols and a subframe immediately following the subframe.

14. The method of claim 12, wherein receiving control information and data of the fractional subframe transmission based on the number of the available symbols comprises:

determining a transport block size in the subframe based on the number of the available symbols; and

receiving the data of the transport block size in the subframe.