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Power distribution method and system of physical hybrid retransmission indication channel

A technology of retransmission indication and physical mixing, which is applied in the field of mobile communication, can solve the problems of not considering power resources, not considering power allocation among multiple users, and not accurately reflecting channel quality, so as to reduce signal interference and improve Effect of PHICH signal quality and reliability improvement

Active Publication Date: 2014-07-02
南通东湖国际商务服务有限公司
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0009] The power allocation method in [1] only considers the power allocation problem among multiple data streams, and does not consider the power allocation problem among multiple users in the physical hybrid retransmission indicator channel group. At the same time, the received data is calculated at the transmitter When the signal-to-noise ratio is high, there is no reference signal for feedback channel quality, so it cannot accurately reflect the quality of the current channel; literature [2] only considers adjusting the frequency domain resources of each user in the physical hybrid retransmission indication channel group to improve Performance, without considering how to reasonably allocate power resources among users

Method used

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  • Power distribution method and system of physical hybrid retransmission indication channel
  • Power distribution method and system of physical hybrid retransmission indication channel
  • Power distribution method and system of physical hybrid retransmission indication channel

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Embodiment Construction

[0036] The base station in the power distribution system of the physical hybrid retransmission indicator channel includes a user power adjustment module. The user power adjustment module is configured to adjust the transmit power of users in the physical hybrid retransmission indication channel group according to the channel quality indication reported by each user.

[0037] The user power adjustment module includes a reference channel quality indication determination unit, a power offset value determination unit, and a user power adjustment processing unit.

[0038] The reference channel quality indicator determining unit is configured to determine the user's reference channel quality indicator, and notify the reference channel quality indicator to the power offset value determining unit.

[0039] The reference channel quality indicator determining unit is further configured to determine the user's reference channel quality indicator in the following manner: determine the num...

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Abstract

A method for power distribution of Physical Hybrid Automatic Repeat Request Indicator Channel (PHICH) is disclosed in the present invention. The method includes: a Base Station (BS) adjusts the transmission power for the users in the PHICH group according to the Channel Quality Indication (CQI) reported by each user, and the adjusting step includes: the BS determines the reference CQI of the users, determines the power offset value of each user in the PHICH group according to the reference CQI and the CQI reported by the users, and adjusts the user power according to the power offset value. A corresponding BS is also disclosed in the present invention. The present invention reduces the signal interference between the users in the PHICH, and improves the signal quality of the PHICH and the reliability of the system.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a power allocation method and system for a physical hybrid retransmission indicator channel. Background technique [0002] With the rapid development of digital communication technology, users have put forward higher requirements for the reliability of data communication. In harsh channel environments, especially in environments with high data rates or high-speed mobile terminals, phenomena such as multipath interference and Doppler frequency shift seriously affect system performance. Therefore, effective error control technology is particularly important. In the field of digital communication, there are basically two main technologies for controlling data errors in the communication process, one is Automatic Repeat request (ARQ for short) technology, and the other It is a forward error correction (Forward Error Correction, referred to as FEC) technology. [0003] ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/24H04L1/18
CPCH04L1/1825H04L1/0026H04L1/1692H04L1/1812
Inventor 吴继文雷超琴
Owner 南通东湖国际商务服务有限公司