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Interference coordination method based on HeNB active cognition, device and system

A kind of interference coordination and active technology, applied in the field of mobile communication, can solve the problem of Muser strong interference and so on

Inactive Publication Date: 2014-02-26
TD TECH COMM TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention provides an interference coordination method and device based on HeNB active cognition, which can solve the problem that HeNB will cause strong interference to Muser during downlink transmission, and at the same time maximize the potential of Femtocell

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  • Interference coordination method based on HeNB active cognition, device and system
  • Interference coordination method based on HeNB active cognition, device and system
  • Interference coordination method based on HeNB active cognition, device and system

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Embodiment Construction

[0044] The embodiment of the present invention proposes an interference coordination method based on active cognition of the HeNB, which utilizes the coexistence problem of the primary and secondary systems of the cognitive radio system to solve the coexistence problem of the Femtocell system and the Macrocell system. The implementation process of this method is given below for a specific application scenario.

[0045] Embodiment 1 of the present invention is aimed at the following application scenario: in a downlink Orthogonal Frequency Division Multiplexing (OFDM) system, a macro cell base station (MeNB) and a HeNB occupy the same frequency band. Among them, the transmission from HeNB to Huser adopts the full frequency band, that is, there are N s subcarriers (resource blocks), and Muser occupies part of the bandwidth, a total of N p (N p s ) subcarriers (resource blocks). It is assumed that there are M HeNBs in the coverage area of ​​a single MeNB.

[0046] The interfer...

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Abstract

The invention provides an interference coordination method based on Home eNodeB (HeNB) active cognition in a Femtocell. The HeNB perceives the interference energy from self to a macro-cell user (Muser) and sends the information of the interference energy to a macro-cell eNodeB (MeNB), the equivalent noise power of the Muser is calculated by the MeNB based on the interference energy perceived by each HeNB, the interference threshold of each HeNB is respectively calculated according to the equivalent noise power, and the HeNB calculates self frequency domain emission predictive codes according to an interference channel from self to the Muser, the interference threshold, the frequency deviation of the HeNB and the Muser and the channel between the HeNB and the Muser. The invention also discloses a device and a system for realizing the method. The invention has the technical scheme that the number of subcarriers occupied at the Muser is smaller than that of subcarriers occupied at the Femtocell, when the Muser and the HeNB have frequency deviation, the performance decline ratio of the Muser can be effectively ensured to be smaller than the preset permitted maximum value eta, and simultaneously effective power distribution can be carried out on the subcarriers unoccupied by a main user so as to promote the transmission performance of the Femtocell, so the throughput of a cellular network is effectively increased.

Description

technical field [0001] The present invention relates to mobile communication technology, in particular to Femtocell technology, and in particular to an interference coordination method, device and system based on active cognition of a Home Base Station (HeNB) (ie, a base station of a Femtocell). Background technique [0002] Femtocell is an ultra-miniature mobile base station launched according to the development of 3G and the trend of mobile broadband in recent years. Femtocell uses IP protocol to connect users with existing broadband lines such as Digital Subscriber Line (DSL) and Local Area Network (LAN), and the remote end uses a dedicated gateway to realize the connection from IP network to mobile network. The size of the Femtocell device is similar to that of an ADSL modem, and it has the characteristics of easy installation, automatic configuration, automatic network planning, and plug-and-play. Femtocell has products that are applicable to various standards such as ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/08H04W28/16H04L1/00
CPCY02B60/50Y02D30/70
Inventor 侯雪颖徐志昆凌为杨晨阳王大飞沈东栋
Owner TD TECH COMM TECH LTD
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