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Power allocation strategy for coordinated multi-point transmission in ultra-dense networking

A technology of multi-point cooperation and allocation strategy, applied in diversity/multi-antenna system, location diversity, network traffic/resource management, etc., can solve the problem of increasing small cell edge users, achieve higher utilization, broad application prospects, and improve performance effect

Active Publication Date: 2021-09-24
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, although the flexible joint transmission strategy between transmission nodes and base stations can increase the performance of small cell edge users, it will undoubtedly bring great challenges to the management of radio resources.

Method used

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  • Power allocation strategy for coordinated multi-point transmission in ultra-dense networking
  • Power allocation strategy for coordinated multi-point transmission in ultra-dense networking
  • Power allocation strategy for coordinated multi-point transmission in ultra-dense networking

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Embodiment Construction

[0075] Such as figure 1 As shown, the present invention discloses a power allocation strategy for multi-point coordinated transmission under ultra-dense networking, including the following steps:

[0076] S1. A system model establishment step, establishing a downlink multi-user multi-point coordinated transmission cellular system model in an ultra-dense networking scenario, and analyzing the downlink data link transmission process in the system model.

[0077] The step of establishing the system model described in S1 specifically includes:

[0078] S11. Assuming that in an ultra-dense networking scenario, transmission nodes and users are randomly distributed in a heterogeneous network, users in the coordinated multi-point transmission system are divided into two types: central users and edge users according to their locations;

[0079] S12. Both the central user and the edge user select the transmission node with the highest received signal strength as the master node, and th...

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Abstract

The present invention discloses a power allocation strategy for coordinated multi-point transmission under ultra-dense networking, including the following steps: S1, a system model establishment step, establishing a downlink multi-user coordinated multi-point transmission cellular system model under ultra-dense networking scenarios , and analyze the downlink data link transmission process in the system model; S2, the steps to propose the transmission scheme, propose a load-aware CoMP transmission scheme, realize the resource allocation requirements of the Multi-point Coordinated transmission, and obtain the load-aware multi-point Algorithm of the point cooperative transmission scheme; S3, power allocation strategy proposal steps, propose a posterior probability power allocation strategy based on user association, and use the user association-based posterior probability power allocation strategy to optimize the power allocation of the coordinated multi-point transmission system . The invention can improve the performance of edge users in a small cell, improve the utilization rate of sub-carriers and the sum rate of the system.

Description

technical field [0001] The invention relates to a power distribution strategy, in particular to a power distribution strategy for multi-point coordinated transmission under ultra-dense networking, and belongs to the communication field. Background technique [0002] With the rapid development of wireless communication networks and the explosive growth of intelligent terminal devices, the existing network structure is facing great challenges. 3GPP proposed a new network architecture model (Heterogeneous Network, HetNet) in LTE-Advanced. This model refers to a large number of low-power transmission nodes, such as micro, pico, femto and medium Continue to wait. Due to the low transmission power of this type of low-power transmission node, it can be deployed in an extremely flexible manner, so as to compensate for blind spots in macro cell coverage at a lower cost and improve the spectrum utilization of the system. In addition, in the Ultra Dense Deployment (UDN) scenario in 5...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/02H04W28/08H04W72/04H04B7/026
CPCH04B7/026H04W24/02H04W28/08H04W72/0473H04W72/52H04W72/53Y02D30/70
Inventor 杨龙祥齐畅
Owner NANJING UNIV OF POSTS & TELECOMM
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