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Signaling for multiple short tti transmissions

A technology for transmitting time interval and control information, which is applied in the directions of transmission path sub-channel allocation, transmission path separation device, signaling allocation, etc., and can solve the problems of throughput and spectral efficiency performance loss, large DMRS overhead, etc.

Active Publication Date: 2022-05-17
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0081] For uplink sTTI transmission, assuming at least one SC-FDMA symbol is used to transmit DMRS for channel estimation within each sTTI, a shorter TTI length results in larger DMRS overhead
For very short TTI lengths, such as 2-symbol sTTI, DMRS overhead can reach 50%, resulting in significant performance loss in throughput and spectral efficiency

Method used

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  • Signaling for multiple short tti transmissions
  • Signaling for multiple short tti transmissions
  • Signaling for multiple short tti transmissions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0210] Embodiment 1: A method of operation of a network node (14) of a wireless communication network (10) for scheduling multiple sTTI transmissions, comprising: sending (100) to a wireless device (12) for one or more sTTI A control information message for transmission; wherein the control information message includes scheduling information indicating one or more scheduled sTTIs respectively used for the one or more sTTI transmissions, and / or for the one or more sTTI transmissions An indication of the timing of the one or more scheduled sTTIs and / or an indication of the DMRS configuration of the one or more scheduled sTTIs for transmission of the one or more scheduled sTTIs.

Embodiment 2

[0211] Embodiment 2: The method of embodiment 1, wherein the one or more sTTI transmissions comprise one or more uplink sTTI transmissions and / or one or more downlink sTTI transmissions.

Embodiment 3

[0212] Embodiment 3: The method of Embodiment 1 or 2, wherein the one or more sTTI transmissions comprise two or more sTTI transmissions scheduled for two or more sTTIs respectively.

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Abstract

Systems and methods for scheduling multiple short transmission time interval sTTI transmissions are described herein. In some embodiments, a method of a network node of a wireless communication network for scheduling operation of multiple sTTI transmissions comprises: sending a control information message for two or more sTTI transmissions to a wireless device, wherein the The control information message includes scheduling information indicating two or more scheduled sTTIs respectively used for the two or more sTTI transmissions, and / or the two or more scheduled sTTIs used for the two or more sTTI transmissions An indication of the timing of two or more scheduled sTTIs and / or an indication of a demodulation reference signal DMRS configuration for said two or more scheduled sTTIs for transmission of said two or more sTTIs. By using multiple sTTI scheduling, control signaling overhead is reduced.

Description

[0001] related application [0002] This application claims the benefit of Provisional Patent Application Serial No. 62 / 502,089, filed May 5, 2017, the entire disclosure of which is incorporated herein by reference. technical field [0003] The present disclosure relates to scheduling short transmission time interval transmissions in wireless communication networks. Background technique [0004] I.1 Millisecond (ms) Transmission Time Interval (TTI) Long Term Evolution (LTE) Frame Structure and Physical Channels [0005] In a 3rd Generation Partnership Project (3GPP) LTE system, the downlink (i.e., from a network node or enhanced or evolved Node B (eNB) to a user equipment or user equipment device (UE)) and uplink ( Data transmission from a user equipment or UE to a network node or eNB) is organized into radio frames of 10 milliseconds (ms), each radio frame consisting of ten equally sized blocks of length T 子帧 = 1ms subframe, such as figure 1 shown. [0006] LTE uses O...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00
CPCH04L5/0007H04L5/0082H04L5/0094H04L5/0053H04L5/0051H04L5/0048H04W72/0446H04W72/23
Inventor 李静雅L·法尔科内蒂H·萨林J·C·索拉诺阿雷纳斯R·卡拉基
Owner TELEFON AB LM ERICSSON (PUBL)