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Method and device for reporting uplink power margin information

A technology of power headroom information and power, applied in the field of communication

Active Publication Date: 2013-04-03
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is currently no solution for how to organize and report PHR to achieve reasonable power control

Method used

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  • Method and device for reporting uplink power margin information
  • Method and device for reporting uplink power margin information
  • Method and device for reporting uplink power margin information

Examples

Experimental program
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Embodiment Construction

[0022] In the embodiment of the present invention, the PH is calculated according to the maximum transmission power and the total uplink transmission power of the subframe that reports the PHR. In this way, no matter how many component carriers participate in the uplink data transmission, only one PH is obtained, so that only one PHR is reported, which realizes Report uplink power headroom information in the case of carrier aggregation.

[0023] see figure 1 , the main method flow for reporting uplink power headroom information in this embodiment is as follows:

[0024] Step 101: the UE obtains its own maximum transmission power and the total uplink transmission power of the subframe for which the PHR is reported.

[0025] Step 102: The UE calculates the PH according to the maximum transmission power and the total uplink transmission power of the subframe in which the PHR is reported. That is, PH=P max -∑P CC (the total uplink transmission power of the subframe in which th...

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Abstract

The invention discloses a method for reporting uplink power margin information and realizing the report of the uplink power margin information under the condition of carrier aggregation. The method comprises the following steps that: user equipment UE acquires own maximum transmitting power and the uplink transmission total power of a subframe of a currently reported PHR (Power Headroom Report); the UE computes a PH (Power Headroom) according to the maximum transmitting power and the uplink transmission total power of the subframe of the currently reported PHR; and the UE reports the PHR comprising the PH. The invention also discloses a device for realizing the method.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and a device for reporting uplink power headroom information. Background technique [0002] Compared with the LTE system, the peak rate of the upgraded Long Term Evolution (LTE Advanced, LTE-A) system is greatly improved. In order to meet this point, the LTE-A system introduces a carrier aggregation (CarrierAggregation, CA) technology. The carrier aggregation technology refers to the uplink and downlink of a cell including multiple component carriers (Component Carrier, CC), instead of only one set of carriers in LTE and previous wireless communication systems. [0003] In the existing LTE system, the UE needs to report a Power Headroom Report (PHR) containing uplink power headroom information, and its brief expression is: [0004] PH (Power Headroom, power usage space) = P max (Maximum transmit power of user equipment UE)-P pusch (the power used by the uplink shared channel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/10H04W28/26H04W72/04H04W88/02
Inventor 谌丽李国庆赵亚利潘学明
Owner DATANG MOBILE COMM EQUIP CO LTD