BR-112019005694-B1 - User equipment, base station communicating with user equipment, method of user equipment, and method of communication between a base station and user equipment.

BR112019005694B1BR 112019005694 B1BR112019005694 B1BR 112019005694B1BR-112019005694-B1

Abstract

The present invention relates to a user equipment (UE). The UE includes a processor. The UE also includes memory in electronic communication with the processor. The instructions stored in memory are executable to determine a radio frame structure based on an independent subframe pattern. The instructions are also executable to receive a downlink data assignment and decode downlink data. The instructions are further executable to determine a negative acknowledgment/hybrid automatic repeat request acknowledgment (HARQ-ACK) feedback timing of the downlink data. The instructions are further executable to transmit HARQ-ACK feedback of the downlink data based on the determined HARQ-ACK feedback timing. The instructions are also executable to receive uplink scheduling information. The instructions are further executable to determine an uplink scheduling timing for a scheduled uplink transmission. The instructions are additionally executable to transmit uplink data in a scheduled subframe.

Inventors

Zhanping Yin
Toshizo Nogami

Assignees

SHARP KABUSHIKI KAISHA
FG Innovation Company Limited

Dates

Publication Date: 20260317
Application Date: 20170927
Priority Date: 20160929

Claims (4)

1. User equipment (UE), characterized in that it comprises: a processor; memory in electronic communication with the processor, wherein the instructions stored in memory are executable to: receive a physical downlink control channel (PDCCH) and decode a physical downlink shared channel (PDSCH); determine a negative acknowledgment/hybrid automatic repeat request acknowledgment (HARQ-ACK) feedback timing of the PDSCH; and transmit HARQ-ACK feedback from the PDSCH based on the determined HARQ-ACK feedback timing; wherein: a standard HARQ-ACK feedback timing is configured by a base station; in a case where the PDCCH uses a downlink control information (DCI) format that contains explicit timing information indicating the timing relationship between the PDSCH and the HARQ-ACK feedback, the HARQ-ACK feedback timing is determined by the explicit timing information contained in the DCI format; in a case where the PDCCH uses a DCI format that does not contain any explicit timing information, the HARQ-ACK feedback timing is determined by the standard HARQ-ACK feedback timing; and the PDSCH HARQ-ACK feedback is reported with the HARQ-ACK feedback timing.
2. Base station that communicates with a user device (UD), characterized in that it comprises: a processor; memory in electronic communication with the processor, wherein the instructions stored in memory are executable to: transmit a physical downlink control channel (PDCCH) and a shared physical downlink channel (PDSCH); determine a negative acknowledgment/hybrid automatic repeat request acknowledgment (HARQ-ACK) feedback timing of the PDSCH; receive HARQ-ACK feedback from the PDSCH based on the determined HARQ-ACK feedback timing; wherein: a standard HARQ-ACK feedback timing is configured by the base station; in a case where the PDCCH uses a downlink control information (DCI) format that contains explicit timing information for the HARQ-ACK feedback timing indicating the timing relationship between the PDSCH and the HARQ-ACK feedback, the HARQ-ACK feedback timing is determined by the explicit timing information contained in the DCI format; in a case where the PDCCH uses a DCI format that does not contain any explicit timing information, the HARQ-ACK feedback timing is determined by the standard HARQ-ACK feedback timing; and the PDSCH HARQ-ACK feedback is reported with the HARQC-ACK feedback timing.
3. A method of a user equipment (UE), characterized in that it comprises: receiving a physical downlink control channel (PDCHH) and decoding a shared physical downlink channel (PDSCH); determining a negative acknowledgment/hybrid automatic repeat request acknowledgment (HARQ-ACK) feedback timing of the PDSCH; and transmitting the PDSCH HARQ-ACK feedback based on the determined HARQ-ACK feedback timing; wherein: a standard HARQ-ACK feedback timing is configured by a base station; in a case where the PDCCH uses a downlink control information (DCI) format that contains explicit timing information indicating the timing relationship between the PDSCH and the HARQ-ACK feedback, the HARQ-ACK feedback timing is determined by the explicit timing information contained in the DCI format; in a case where the PDCCH uses a DCI format that does not contain any explicit timing information, the HARQ-ACK feedback timing is determined by the standard HARQ-ACK feedback timing; and the PDSCH HARQ-ACK feedback is reported with the HARQ-ACK feedback timing.
4. A method of communication between a base station and a user equipment (UE), characterized in that it comprises: transmitting a physical downlink control channel (PDCCH) and a shared physical downlink channel (PDSCH); determining a negative acknowledgment/hybrid automatic repeat request acknowledgment (HARQ-ACK) feedback timing for the PDSCH; receiving HARQ-ACK feedback from the PDSCH based on the determined HARQ-ACK feedback timing; wherein: a standard HARQ-ACK feedback timing is configured by the base station; in a case where the PDCCH uses a downlink control information (DCI) format that contains explicit timing information indicating the timing relationship between the PDSCH and the HARQ-ACK feedback, the HARQ-ACK feedback timing is determined by the explicit timing information contained in the DCI format; in a case where the PDCCH uses a DCI format that does not contain any explicit timing information, the HARQ-ACK feedback timing is determined by the standard HARQ-ACK feedback timing; and the PDSCH HARQ-ACK feedback is reported with the HARQC-ACK feedback timing.

Description

RELATED DEPOSIT REQUESTS [0001] This application relates to and claims priority to U.S. Provisional Patent Application No. 62/401,782, entitled "SYSTEMS AND METHODS FOR DETERMINING FRAME STRUCTURE AND ASSOCIATION TIMING", filed September 29, 2016, which is incorporated herein by reference in its entirety. TECHNICAL FIELD [0002] This disclosure relates generally to communication systems. More specifically, this disclosure relates to user equipment (UEs), base stations and methods. BACKGROUND OF THE INVENTION [0003] Wireless communication devices have become smaller and more powerful to meet consumer needs and improve portability and convenience. Consumers have become dependent on wireless communication devices and have come to expect reliable service, expanded coverage areas, and greater functionality. A wireless communication system can provide communication for multiple wireless communication devices, each of which can be serviced by a base station. A base station can be a device that communicates with wireless communication devices. [0004] With the advancement of wireless communication devices, improvements in the capacity, speed, flexibility, and/or efficiency of communication have been sought. However, improving the capacity, speed, flexibility, and/or efficiency of communication can present certain problems. [0005] For example, wireless communication devices can communicate with one or more devices using a communication framework. However, the communication framework used may offer only limited flexibility and/or efficiency. As illustrated by this discussion, systems and methods that increase communication flexibility and/or efficiency can be beneficial. BRIEF DESCRIPTION OF THE DRAWINGS [0006] Figure 1 is a block diagram that illustrates an example of one or more base stations and one or more UEs in which systems and methods for determining whether the frame structure and association timing can be implemented; [0007] Figure 2 is a flowchart that illustrates a method for determining the frame structure and association timing; [0008] Figure 3 is a flowchart that illustrates another method for determining the frame structure and association timing; [0009] Figure 4 is a diagram illustrating an example of a radio panel that can be used in accordance with the systems and methods disclosed herein; [0010] Figure 5 is a diagram that illustrates examples of radio frame structures based on independent subframes; [0011] Figure 6 is a diagram that illustrates examples of radio frames on the order of 2n subframes; [0012] Figure 7 is a diagram that illustrates examples of implicit link-down hybrid automatic repeat request feedback timing associations; [0013] Figure 8 is a diagram that illustrates an example of inserting a new independent subframe, which can automatically modify the HARQ-ACK timing; [0014] Figure 9 is a diagram that illustrates an example of explicit HARQ-ACK de-time for offloading to a subsequent uplink or independent subframe; [0015] Figure 10 is a diagram that illustrates some examples of uplink scheduling; [0016] Figure 11 illustrates various components that can be used in a UE; [0017] Figure 12 illustrates various components that can be used in a base station; [0018] Figure 13 is a block diagram illustrating an implementation of a UE in which systems and methods for determining the frame structure and association timing can be implemented; and [0019] Figure 14 is a block diagram illustrating an implementation of a base station in which systems and methods for determining frame structure and association timing can be implemented. DETAILED DESCRIPTION [0020] A user equipment (UE) is described. The UE includes a processor and a memory in electronic communication with the processor. The instructions stored in memory are executable to determine a radio frame structure based on an independent subframe pattern. The instructions are also executable to receive a downlink data assignment and decode downlink data. The instructions are additionally executable to determine a negative acknowledgment/hybrid automatic repeat request acknowledgment (HARQ-ACK) feedback timing of the downlink data. The instructions are additionally executable to transmit HARQ-ACK feedback of the downlink data based on the determined HARQ-ACK feedback timing. The instructions are also executable to receive uplink scheduling information. The instructions are additionally executable to determine an uplink scheduling timing for a scheduled uplink transmission. The instructions are additionally executable to transmit uplink data in a scheduled subframe. [0021] A radio frame may contain at least one independent subframe in the independent subframe pattern. An independent subframe may be a subframe that includes at least one downlink portion, one gap period, and one uplink portion. [0022] The radio frame can have 10 subframes or a multiple of 10 subframes. An independent subframe can be configured every 2 subframes, every 5 subframes, ev