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Method for autonomous uplink transmission and retransmission

A technology that uses autonomous, retransmission applications in transmission systems, digital transmission systems, error prevention/detection using return channels, etc.

Active Publication Date: 2022-08-05
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

eNB grants certain subframes for uplink transmission

Method used

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  • Method for autonomous uplink transmission and retransmission
  • Method for autonomous uplink transmission and retransmission
  • Method for autonomous uplink transmission and retransmission

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Example 1-Re-transmission window given by a prohibited timer

[0075] In this embodiment, the UE is configured with a re -transmission window given by the timer, which can be called a re -transmission timer. Repeat the prohibited timer to determine when the UE is allowed to execute it. Because HARQ feedback may be lost or just not sent due to LBT, the role of re -transmission of prohibited timers is to allow ENB to have more timers to send HARQ feedback for HARQ processes that have not yet been confirmed.

[0076] Re -transmitting the timer to be associated with a Harq process, and when the timer expires, the UE is allowed to execute the UL transmission of the previously sent HARQ process. UL can be executed by the first permit transmission timing after the timing device expires, or the UL re -transmission is performed in accordance with the method of publicity in the embodiment 2.

[0077] You can trigger a re -transmission timer when any of the following items occur:

[0...

Embodiment 2

[0090] Example 2-Re-transmission window given by re-transmitting timer

[0091] In this embodiment, when the re -transmission of the time -associated with the corresponding HARQ ID expires, the UE can launch a re -transmission window for the HARQ ID. In this retraining window, the UE needs to execute the Harq with the Harq ID corresponds to re -transmission. For example, you need to re -transmit the window so as to avoid the use of UE too much to perform re -transmission and may affect the RLC re -sorting process.

[0092] If the UE executes the re -window, the winding window is cleared (that is, it ends). Otherwise, the re -transmission window will ultimately expire. At the expiration, the counter to the counter to step forward, that is, it will increase (or decrease, which depends on the implementation of the counter). Even if the UE does Execution. When the re -window expires, you can start a new rewriting window. Repeat the counter to count the number of rewriting windows. If ...

Embodiment 3-H

[0105] Example 3-HARQ re-transmission window

[0106] In this embodiment, the HARQ transmission window given by the timer (referred to as the HARQ window in this article) is used to indicate the maximum time to indicate the successful completion of the HARQ process. Or in other words, there is a maximum time to allow the UE to send a transmission block / data from a Harq process, and after that time, the UE will no longer be allowed to send the transmission block from the HARQ process.

[0107] This can be implemented by the UE so that if the HARQ confirmed by HARQ sent by the network node in the rewrite window (indicates that the ACK or the NDI of the HARQ ID or flip), the UE will not allow the UE to continue sending the Harq process from the HARQ process The transmission block. The UE can refresh the buffer zone associated with the HARQ process and / or the new transmission (that is, new transmission blocks) associated with the HARQ process.

[0108] Therefore, the UE can refresh th...

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PUM

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Abstract

A method in a wireless device for communicating with a network node using autonomous uplink (UL) access is provided. The method includes: after sending a data transmission to a network node, initiating a retransmission window associated with a feedback process for the data transmission, the retransmission window including a first timer; and in response to a time given at the first timer No feedback signal is detected during the segment, and the data is retransmitted after the first timer expires.

Description

[0001] Cross reference for related applications [0002] The right to apply for the following applications is required for the rights and interests of the following applications: On August 11, 2017, the "Methods for Autonomous Ul Transmissions and Retransmissions" (Methods for Autonomous Ul Transmissions) was submitted by the US Patent Trademark Office (USPTO). NO.62 / 544221 in the U.S. temporary patent application; and the "Harq Methods for Autonomous Ul Access (HARQ Method for Autonomous UL Access)" submitted in USPTO on September 27, 2017 " .62 / 563821. These two temporary applications are incorporated into this article by reference. Technical field [0003] This disclosure generally involves wireless communication systems, and more specifically involves the transmission and re -transmission of autonomous on -board links. Background technique [0004] The 3GPP work on the "Authorized Assistance Access" (LAA) aims to allow long -term evolution (LTE) devices to operate in unauthori...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18
CPCH04L1/1685H04L1/1822H04L1/1877H04L1/1883H04W76/28H04L1/1819H04L1/1874H04W24/08H04W72/23H04W72/53
Inventor 马克·贝莱斯奇马蒂亚斯·伯格斯特罗姆雷姆·卡拉基郑荣富迈-安·芬马格努斯·斯塔汀
Owner TELEFON AB LM ERICSSON (PUBL)