A 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: 2020-12-01
HUAWEI TECH CO LTD
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  • Description
  • Claims
  • Application Information

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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.

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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 device splits the user information, then performs channel coding and modulation mapping in sequence, and then performs MIMO precoding and power allocation. Finally, framing and OFDM modulation are carried out, and sent to the spatial channel through the transmitting antenna.

[0112] The terminal uses the receiving antenna to receive the signal sent by the network device, firstly performs OFDM demodulation, deframes, and then divides into two channels, one channel estimation is performed, the estimated channel vector and the quantized channel vector are determined, the channel quantization error is calculated, and the best matching The codeword index and channel quantization error mean value are fed back to the network equipment; on the other hand, the CSI obtained by channel estimation is used for MIMO decoding, symbol demodulation, channel decoding, an...

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 device splits the user information, then performs channel coding and modulation mapping in sequence, and then performs MIMO precoding and power allocation. Finally, framing and OFDM modulation are carried out, and sent to the spatial channel through the transmitting antenna.

[0127] At the same time, the network equipment uses the receiving antenna to receive the uplink signal sent by the terminal equipment, first performs OFDM demodulation, performs channel estimation, and obtains the uplink channel estimation, and then obtains the downlink channel estimation according to the channel reciprocity, and 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 downl...

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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] The present application relates to the technical field of wireless communication, and in particular to a power allocation method and device. Background technique [0002] Multiple-input multiple-output (Multi Input Multi Output, MIMO) technology plays an important role in recent improvements in spectrum and energy efficiency of wireless networks. In actual scenarios, there are problems such as interference between multiple users or multiple cells, which affect various performances such as system freedom, spectrum efficiency, and energy efficiency. The proposal of the rate splitting (Rate Splitting, RS) transmission strategy provides a new idea for solving the interference problem between multiple users or multiple cells. [0003] Specifically, such as figure 1 As shown, it is assumed that a network device wants to send K user information to K terminal devices respectively in the same time-frequency resource block. [0004] For the sender, the networ...

Claims

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Application Information

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Patent Type & Authority Patents(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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