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Uplink power prioritization for short tti

A prioritization, power technology, used in power management, wireless communication, electrical components, etc., can solve problems such as inability to provide enough allocated UL power

Active Publication Date: 2022-02-08
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in some scenarios, the priority information of 1ms UL TTI may not provide enough information for allocating UL power

Method used

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  • Uplink power prioritization for short tti
  • Uplink power prioritization for short tti
  • Uplink power prioritization for short tti

Examples

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Embodiment Construction

[0075]As mentioned above, for 1ms UL TTI in LTE, if the UE has parallel transmission of two or more UL physical channels and there is not enough power for parallel transmission of all UL physical channels, according to the priority in the uplink UL power is allocated among physical channels. For example, UL power may be allocated according to the following priorities: (1) PUCCH first; (2) PUSCH with UCI (UL Control Information); (3) PUSCH without UCI; (4) PRACH; SRS. Certain UEs may also support sTTI transmissions (the duration of sTTI transmissions is less than 1 millisecond, and thus shorter than 1 millisecond TTI transmissions). However, power control for physical channels on sTTI has not been defined. Therefore, there is currently no solution on how to control the power on sPUSCH and sPUCCH, and more specifically, there is no solution on how to control the power between UL physical channels for sTTI and also between UL physical channels for sTTI and lms TTI A solution f...

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Abstract

Certain embodiments relate to a method for use in a wireless device. The method includes allocating uplink power between parallel transmissions during subframes that the wireless device has scheduled on two or more uplink physical channels. The parallel transmissions include one or more short transmission time interval sTTI transmissions, and the UL power is allocated according to at least one prioritization rule. According to one of said prioritization rules, sTTI transmissions comprising control information are prioritized over sTTI transmissions comprising data but without any control information. According to another of the prioritization rules, transmissions with shorter transmission time intervals are prioritized over transmissions with longer transmission time intervals.

Description

technical field [0001] The present disclosure relates generally to wireless communications and, more particularly, to uplink power prioritization for short transmission time intervals. Background technique [0002] Delay reduction with short subframes [0003] Packet data latency is one of the performance metrics regularly measured by providers, carriers and end users (via speed test applications). Latency measurements are made in all phases of the lifecycle of a radio access network system, eg when validating new software versions or system components, when deploying the system and when the system is in commercial operation. [0004] Shorter latency than previous generations of the 3rd Generation Partnership Project (3GPP) Radio Access Technology (RAT) is a performance metric guiding Long Term Evolution (LTE) design. LTE is also now recognized by end users as a system that provides faster Internet access and lower data latency than previous generations of mobile radio tec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/14H04W52/34H04W52/28
CPCH04W52/281H04W52/34H04W52/346H04W52/146
Inventor 蕾蒂莎·法奥康涅蒂古斯塔夫·阿尔姆奎斯特丹尼尔·陈拉松
Owner TELEFON AB LM ERICSSON (PUBL)
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