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Interference management method based on spectrum allocation and power control in family base station system

A home base station and power control technology, applied in the field of communication, can solve problems such as reducing user service quality, reducing signal-to-interference-noise ratio, inter-cell interference, etc., and achieve the effect of avoiding complex optimization problems

Active Publication Date: 2014-11-19
CERTUS NETWORK TECHNANJING
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

In LTE, the minimum time-frequency unit that can be allocated to a user is defined as a resource block (Resource Block, RB). When an RB is allocated to multiple cells, it will cause inter-cell interference and reduce the signal-to-interference-noise ratio, thereby reducing the user's service. quality

Method used

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  • Interference management method based on spectrum allocation and power control in family base station system
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  • Interference management method based on spectrum allocation and power control in family base station system

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Embodiment Construction

[0026] The performance parameters analyzed by the present invention are SINR (interference and noise, SINR) and throughput, where the macro user u m ∈ U M The SINR at occupied resource blocks n∈N can be expressed as follows:

[0027] γ m n = p m n g m , u m n Σ k = 1 , k ≠ m M p k n g k , ...

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Abstract

The invention relates to an interference management method based on spectrum allocation and power control in a family base station system based on OFDMA (orthogonal frequency division multiple access). The method includes that each family base station serves as an agent of Q learning and a gamer in the game theory, spectrum is allocated dynamically based on the Q learning, power allocation is realized through games during the Q learning, and each family base station takes optimization of performances as objectives. The family base station system can be finally converged to an optimal action during continuous interaction with environments, so that performances of the family base stations and the whole system are improved while requirements of the macro base station signal to noise ratio threshold can be met, and the problem of complex optimization is avoided.

Description

technical field [0001] The invention relates to a dynamic interference management method especially used in an OFDMA-based home base station system, and belongs to the technical field of communication. Background technique [0002] Femtocells are designed to serve small-area coverage (such as homes or offices). According to reports, in the next few years, the proportion of outdoor mobile phone calls will gradually decrease while indoor data services will increase significantly. Due to the small coverage, low cost and low power consumption of femtocells, femtocells can be distributed more densely than macro base stations, and spectrum can be reused more effectively, providing indoor users with wider spectrum and better service quality. The emergence of femtocells will inevitably increase the interference to users of macro base stations, so how to allocate resources reasonably to reduce the interference of femtocells to macro users has become one of the main issues considered ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/10H04W16/22H04W52/24H04W52/30
Inventor 朱琦季祥芬朱洪波杨龙祥
Owner CERTUS NETWORK TECHNANJING
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