Power distribution method and device

An allocation method and a technology for power allocation parameters, which are applied in the field of power allocation methods and equipment, and can solve problems such as limiting the application range of RS transmission strategies.

Active Publication Date: 2019-07-05
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] The present application provides a power allocation method and device to solve the problem that in the prior art, when the network equipment adopts the RS transmission strategy, it is limited to use the characteristics of the RVQ codebook to determine the power allocation parameter value, which limits the application range of the RS transmission strategy.

Method used

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Embodiment 1

[0111] Refer to Figure 4 As shown, Embodiment 1 is applied to a small-scale antenna scenario of an FDD system. The network equipment performs information splitting on user information, then sequentially performs channel coding and modulation mapping, and then performs MIMO precoding and power allocation. Finally, it performs framing and OFDM modulation, and sends it to the spatial channel through the transmitting antenna.

[0112] The terminal uses the receiving antenna to receive the signal sent by the network device, first performs OFDM demodulation, deframes, and then divides it into two channels for channel estimation all the way, determines the estimated channel vector and quantized channel vector, calculates the channel quantization error, and makes the best match The codeword index and the mean value of the channel quantization error are fed back to the network equipment; the other way, the CSI obtained by the channel estimation is used for MIMO decoding, symbol demodulat...

Embodiment 2

[0126] Refer to Figure 7 As shown, Embodiment 2 is applied to a small-scale antenna scenario of a TDD system. The network equipment performs information splitting on user information, then sequentially performs channel coding and modulation mapping, and then performs MIMO precoding and power allocation. Finally, it performs framing and OFDM modulation, and sends it to the spatial channel through the transmitting antenna.

[0127] At the same time, the network device uses the receiving antenna to receive the uplink signal sent by the terminal device, first performs OFDM demodulation, performs channel estimation, and obtains the uplink channel estimate, and then obtains the downlink channel estimate according to the channel reciprocity, determines the estimated channel vector and quantized channel Vector, calculate the channel quantization error, and record the best matching codeword index and channel quantization error.

[0128] Specific as Figure 8 As shown, it is applied to the...

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Abstract

The invention discloses a power distribution method and equipment, which are used for solving the problem that the application range of an RS transmission strategy is limited. The method comprises thefollowing steps of: a network device obtains K channel quantization error mean values, wherein the K channel quantization error mean values are in one-to-one correspondence with the K terminal devices, and the ith channel quantization error mean value in the K channel quantization error mean values is determined according to an estimation channel vector and a quantization channel vector corresponding to a signal transmitted between the ith terminal device and the network device; and the network device determines a power distribution parameter value, wherein the power distribution parameter value is determined according to the K channel quantization error mean values. By adopting the method, the RS transmission strategy does not depend on an RVQ codebook, and the method is suitable for more codebooks.

Description

Technical field [0001] This application relates to the field of wireless communication technology, and in particular to a power distribution method and equipment. Background technique [0002] Multi Input Multi Output (MIMO) technology plays an important role in the recent improvement of wireless network spectrum and energy efficiency. In actual scenarios, there are problems such as multi-user or multi-cell interference, which affects the system's degree of freedom, spectrum efficiency, and energy efficiency. The proposal of the rate splitting (RS) transmission strategy provides a new idea for solving the problem of multi-user or multi-cell interference. [0003] Specific, such as figure 1 As shown, it is assumed that a network device wants to send K user information to K terminal devices in the same time-frequency resource block. [0004] For the sending end, the network equipment separates each user's information into public information and private information. For example, spli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/0426H04W72/04
CPCH04B7/0426H04W72/0473
Inventor 都秀宇李泽健钱锋楼群芳
Owner HUAWEI TECH CO LTD
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