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Flexible time-division duplex subframe structure with reduced delay

A sub-frame and timing technology, applied in duplex signal operation, connection management, digital transmission system, etc., can solve problems such as communication delay and interruption

Active Publication Date: 2021-02-26
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This may cause delays and interruptions in communication

Method used

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  • Flexible time-division duplex subframe structure with reduced delay
  • Flexible time-division duplex subframe structure with reduced delay
  • Flexible time-division duplex subframe structure with reduced delay

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Embodiment Construction

[0038] Some wireless systems may utilize low-latency operation in which transmission time intervals (TTIs) support communications of reduced duration compared to other TTIs in the system or TTIs of certain legacy systems. In some cases, low-latency operation may result in significant over-the-air delay reduction. The subframe structure for time division duplex (TDD) communication can take various configurations in such low-latency systems. For example, as described herein, some TTIs (e.g., subframes) may include uplink (UL) and downlink (DL) regions, so that by increasing the distance between the user equipment (UE) and the base station in the system The frequency of transmissions during the duration of one TTI is used to achieve latency reduction.

[0039] By way of example, in one TDD subframe, there may be a downlink (DL) part or region carrying communication data or control information, a guard period, and an uplink (UL) part or region carrying uplink control information....

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Abstract

Methods, systems, and devices for wireless communications are described. A wireless device may identify multiple regions within a subframe, such as one or more uplink regions, one or more downlink regions, and a guard region. A wireless device can identify and communicate during each region based on the timing relationship between the downlink region and the uplink region. For example, a device may expect hybrid automatic repeat request (HARQ) feedback for one downlink region in the same subframe based on proximity to the next uplink region. Another downlink region may not have HARQ feedback in the same subframe. Similarly, uplink regions may or may not be scheduled within the same subframe.

Description

[0001] cross reference [0002] This patent application claims priority to U.S. Patent Application No. 15 / 189,971, filed June 22, 2016, and entitled "Flexible Time Division Duplexing Subframe Structure with Latency Reduction"; Priority of U.S. Provisional Patent Application No. 62 / 213,520 for "Flexible Time Division Duplexing Subframe Structure with Latency Reduction"; each of which is assigned to the assignee of the present application. technical field [0003] The following relates generally to wireless communications, and more particularly to flexible time division duplex (TDD) subframe structures with reduced delay. Background technique [0004] Wireless communication systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems are capable of supporting communication with multiple users by sharing available system resources (eg, time, frequency, and power). Examples of su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/14H04L5/00
CPCH04L5/0092H04L5/1469H04W76/27H04L1/1812H04W88/02H04W72/20H04L5/14
Inventor 陈万士S·A·帕特尔A·达姆尼亚诺维奇P·加尔
Owner QUALCOMM INC