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Method and device for adjusting transmitting power

A transmission power and power adjustment technology, applied in the field of communication, can solve problems such as the inability to achieve a reasonable distribution of transmission power

Inactive Publication Date: 2011-11-09
CHINA ACAD OF TELECOMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In this case, once the total target transmit power of the UE exceeds the maximum allowable transmit power of the UE, according to the existing LTE-related standards, it is impossible to achieve a reasonable allocation of transmit power among UL CCs

Method used

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  • Method and device for adjusting transmitting power

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Embodiment Construction

[0027] In the embodiment of the present invention, in the carrier aggregation scenario of the LTE Rel-11 system, the UE is allowed to simultaneously send at least one preamble and at least one other uplink signal on different UL CCs. The so-called at least one other uplink signal can be preamble, PUCCH Any one or any combination of the PUSCH signal and the PUSCH signal; when other uplink signals are also preamble, the UE actually initiates a random access process to the base station at the same time through the UL CCs corresponding to multiple cells, so as to realize the communication between each cell and the base station Uplink synchronization; when other uplink signals are PUCCH signals and / or PUSCH signals, the UE actually performs the following operations at the same time through the UL CCs corresponding to multiple cells: initiate random access procedures, send uplink control signaling and / or uplink data.

[0028] When the UE transmits at least one preamble and at least ...

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Abstract

The invention discloses a method and device for adjusting transmitting power, belonging to the field of communication. The method and the device are used for realizing the reasonable distribution of transmitting power between uplink component carriers (ULCC). The method comprises the following steps: when UE (User Equipment) transmits at least one preamble and at least one of other uplink signals at different ULCCs simultaneously and the total target transmitting power is greater than the maximum allowable transmitting power, the UE requires to determine the power adjustment priority of each uplink signal according to a preset rule and adjusts the target transmitting power of at least one preamble and / or at least one of other uplink signals according to the power adjustment priority until the total target transmitting power is not greater than the maximum allowable transmitting power. Thus, the UE can realize the reasonable distribution of transmitting power among different ULCCs, the situation that the transmission of uplink signals is influenced due to too large total target transmitting power is avoided, the operating stability and the robustness of the system are enhanced, and the overall performance of the system is also enhanced.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and device for adjusting transmission power. Background technique [0002] In the LTE system, a Random access procedure (random access procedure) is generally used to establish uplink synchronization between the UE and the base station. [0003] In the LTE Rel-8 system, the UE uses a PRACH channel (Physical Random Access Channel) to send a preamble (preamble sequence) in an uplink subframe to implement random access. [0004] In the LTE Rel-10 system, carrier aggregation technology is introduced, that is, multiple component carriers are aggregated in the downlink and / or uplink direction to provide higher peak rates. In the carrier aggregation scenario of the LTE Rel-10 system, Each UE is assigned a Pcell (Primary cell, primary cell) and several Scells (Secondary cell, secondary cells) by the base station. For an FDD system, a cell includes a downlink carrier and an uplink carr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/18
CPCH04W52/18H04W52/04
Inventor 潘学明高雪娟林亚男肖国军
Owner CHINA ACAD OF TELECOMM TECH
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