Uplink/downlink scheduling in a wireless communication system

Patent metadata

Field	Value
Publication number	US-2019014591-A1
Application number	US-201515752544-A
Country	US
Kind code	A1
Filing date	Aug 14, 2015
Priority date	Aug 14, 2015
Publication date	Jan 10, 2019
Grant date	—

Abstract

Apparatuses, methods, and systems are disclosed for uplink/downlink scheduling. One apparatus includes a processor and a memory that stores code executable by the processor. The code, in various embodiments, determines an uplink schedule for data to be transmitted from a user equipment. In a further embodiment, the code determines a downlink schedule for data to be provided to the user equipment. The apparatus may include a transmitter that provides an uplink grant message to the user equipment to initiate an uplink transmission based on the uplink schedule. In certain embodiments, the uplink schedule and the downlink schedule are determined without using a predefined split pattern for uplink and downlink transmission.

First claim

What is claimed is:

1 . An apparatus comprising:
a processor; a memory that stores code executable by the processor, the code comprising:
code that determines an uplink schedule for data to be transmitted from a user equipment; and
code that determines a downlink schedule for data to be provided to the user equipment; and
a transmitter that provides an uplink grant message to the user equipment to initiate an uplink transmission based on the uplink schedule; wherein the uplink schedule and the downlink schedule are determined without using a predefined split pattern for uplink and downlink transmission.

2 . The apparatus of claim 1 , wherein the code comprises code that reserves a gap between downlink transmission and the uplink transmission to enable the user equipment to perform a clear channel assessment (“CCA”).

3 . The apparatus of claim 1 , wherein the uplink grant message comprises an indication that indicates timing for the uplink transmission.

4 . The apparatus of claim 2 , wherein the indication within the uplink grant message comprises an offset between a subframe in which the uplink grant message is received and a subframe in which the uplink transmission begins.

5 . The apparatus of claim 2 , wherein the indication within the uplink grant message comprises an index to indicate a subframe in which to begin the uplink transmission.

6 . The apparatus of claim 1 , wherein the uplink grant message comprises a subframe type indication within the uplink grant message to indicate whether a scheduled uplink subframe is to be full or partial.

7 . A method comprising:
determining, by use of a processor, an uplink schedule for data to be transmitted from a user equipment; determining a downlink schedule for data to be provided to the user equipment; and providing an uplink grant message to the user equipment to initiate an uplink transmission based on the uplink schedule; wherein the uplink schedule and the downlink schedule are determined without using a predefined split pattern for uplink and downlink transmission.

8 . The method of claim 7 , comprising reserving a gap between downlink transmission and the uplink transmission to enable the user equipment to perform a clear channel assessment (“CCA”).

9 . The method of claim 7 , comprising performing a listen before talk (“LBT”) operation to determine whether an operating channel is clear.

10 . The method of claim 9 , comprising providing a downlink transmission based on the downlink schedule if the operating channel is clear.

11 . The method of claim 9 , wherein performing the LBT operation comprises performing the LBT operation in a second slot of a last subframe of the uplink transmission.

12 . The method of claim 7 , wherein providing the uplink grant message to the user equipment to initiate the uplink transmission comprises providing an indication within the uplink grant message to indicate timing for the uplink transmission.

13 . The method of claim 12 , wherein providing the indication within the uplink grant message to indicate timing for the uplink transmission comprises providing an offset between a subframe in which the uplink grant message is received and a subframe in which the uplink transmission begins.

14 . The method of claim 12 , wherein providing the indication within the uplink grant message to indicate timing for the uplink transmission comprises providing an index to indicate a subframe in which to begin the uplink transmission.

15 . The method of claim 7 , wherein providing the uplink grant message to the user equipment to initiate the uplink transmission comprises providing a subframe type indication within the uplink grant message to indicate whether a scheduled uplink subframe is to be full or partial.

16 . An apparatus comprising:
a receiver that receives an uplink grant message; a processor; a memory that stores code executable by the processor, the code comprising code that determines an uplink schedule for data to be transmitted based on a portion of the uplink grant message; and a transmitter that transmits data based on the uplink schedule; wherein the uplink schedule is part of a schedule that does not use a predefined split pattern for uplink and downlink transmission.

17 . A method comprising:
receiving, by use of a processor, an uplink grant message; determining an uplink schedule for data to be transmitted based on a portion of the uplink grant message; and transmitting the data based on the uplink schedule; wherein the uplink schedule is part of a schedule that does not use a predefined split pattern for uplink and downlink transmission.

18 . The method of claim 17 , wherein determining the uplink schedule for data to be transmitted based on the portion of the uplink grant message comprises determining the uplink schedule based on an indication within the uplink grant message of an offset between a subframe in which the uplink grant message is received and a starting subframe for uplink transmission.

19 . The method of claim 17 , wherein determining the uplink schedule for data to be transmitted based on the portion of the uplink grant message comprises determining the uplink schedule based on an indication within the uplink grant message of an index of a starting subframe for uplink transmission.

20 . The method of claim 17 , comprising determining whether a scheduled subframe of the data to be transmitted is to be a full subframe or a partial subframe based on an indication in the uplink grant message.

Assignees

• Lenovo Innovations Ltd Hong Kong

Inventors

• Lei Haipeng

Classifications

• H04W72/23 Primary

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04W72/21 Primary

  in the uplink direction of a wireless link, i.e. towards the network · CPC title

• H04W72/12

  Wireless traffic scheduling · CPC title

• H04W72/14

  Electricity · mapped topic

• H04W74/0816

  with collision avoidance · CPC title