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Power headroom reporting (PHR) method, system and device in multicarrier polymerization system

A technology of multi-carrier aggregation and power headroom, applied in electrical components, wireless communication, etc., can solve problems affecting the scheduling accuracy of uplink CC, and achieve the effect of improving system performance

Active Publication Date: 2015-07-22
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the RRC reconfiguration signaling used to increase the number of uplink CCs in the CA system adopts the delta configuration method, that is, only through the RRC reconfiguration signaling, the terminal is configured with the newly added uplink CC and some of its specific parameters, and does not need to pass through the RRC The reconfiguration signaling is for the terminal to reconfigure the PHR function. According to the existing PHR trigger mechanism, the terminal does not need to trigger the PHR. Obviously, this will affect the accuracy of the scheduling on the uplink CC.

Method used

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  • Power headroom reporting (PHR) method, system and device in multicarrier polymerization system
  • Power headroom reporting (PHR) method, system and device in multicarrier polymerization system
  • Power headroom reporting (PHR) method, system and device in multicarrier polymerization system

Examples

Experimental program
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Effect test

example 1

[0095] When the terminal maintains the PHR parameters based on the uplink component carrier, the terminal calculates the PH value of the newly added uplink component carrier, and determines the PH value as the PH value that needs to be reported; then, sends the determined PH value through the newly added uplink component carrier to the base station. Specifically, the terminal sends the determined PH value to the base station on the first uplink scheduling time-frequency resource; the first uplink scheduling time-frequency resource is the first one on the newly added uplink component carrier after the terminal triggers PHR. A time-frequency resource capable of carrying a PHR MAC CE carrying a PH value and a corresponding MAC subheader.

[0096] After the terminal sends the determined PH value to the base station, the terminal cancels all PHRs triggered on the newly added uplink component carrier, and starts the prohibited PHR timer and periodic PHR timer set for the newly added...

example 2

[0101] When the terminal maintains PHR parameters based on the terminal, the terminal calculates the PH value of each uplink component carrier supported by itself, and determines each calculated PH value as the PH value that needs to be reported; then, the terminal uses the newly added uplink component carrier or Other uplink component carriers supported by the terminal send the determined PH value to the base station. Specifically, the terminal sends the determined PH value to the base station on the first uplink scheduling time-frequency resource; the first uplink scheduling time-frequency resource is the first one on the newly added uplink component carrier after the terminal triggers PHR. A time-frequency resource capable of carrying the PHR MAC CE carrying the PH value and the corresponding MAC sub-header; or, the terminal sends the determined PH value to the base station on the second uplink scheduling time-frequency resource; the second uplink scheduling time-frequency r...

example 3

[0108] When the terminal maintains PHR parameters based on the terminal, the terminal calculates the total PH value of all uplink component carriers supported by itself, and determines the calculated total PH value as the PH value that needs to be reported; then, the terminal uses the newly added uplink component carrier or Other uplink component carriers supported by the terminal send the determined PH value to the base station. Specifically, the terminal sends the determined PH value to the base station on the first uplink scheduling time-frequency resource; the first uplink scheduling time-frequency resource is the first one on the newly added uplink component carrier after the terminal triggers PHR. A time-frequency resource capable of carrying the PHR MAC CE carrying the PH value and the corresponding MAC subheader; or, the terminal sends the determined PH value to the base station on the second uplink scheduling time-frequency resource; the second uplink scheduling time-f...

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PUM

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Abstract

The invention discloses a power headroom reporting method, system and equipment in a multi-carrier aggregation system, relates to the field of wireless communications, and is used to improve the accuracy of scheduling uplink component carriers on the network side in the multi-carrier aggregation system. In the present invention, when the terminal receives the RRC reconfiguration signaling from the base station carrying the information of the newly added uplink component carrier for the terminal, it triggers PHR, determines the PH value that needs to be reported, and reports the determined PH value to It can be seen from the base station that using the present invention, when the terminal receives the RRC reconfiguration signaling for adding a new uplink component carrier to the terminal from the base station, it will also trigger the reporting of PHR, so that the network can more accurately schedule the uplink CC based on the reported PHR. This in turn improves system performance.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a method, system and device for reporting power headroom in a multi-carrier aggregation system. Background technique [0002] The Long Term Evolution (LTE) system has a Power Headroom Report (PHR) mechanism, which requires a terminal (UE) to report a Power Headroom (PH) under certain conditions. [0003] The following introduces the relevant definitions of PHR: [0004] PH is the difference between the maximum transmit power allowed by the UE on the system bandwidth and the estimated transmit power. The PH calculation formula is as follows: [0005] PH=P CMAX -P PUSCH ; [0006] Among them, P CMAX is the maximum transmit power allowed by the UE on the system bandwidth, P PUSCH is the power used by the Physical Uplink Shared Channel (PUSCH) carrying the PH information. [0007] The following introduces the relevant parameter configuration of PHR: [0008] The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/08H04W72/12H04W72/54
Inventor 赵亚利
Owner DATANG MOBILE COMM EQUIP CO LTD