Femtocell Spectrum Allocation Method Based on Load Prediction Grouping in Hierarchical Heterogeneous Networks

Abstract

The invention discloses a family base station frequency spectrum allocation method based on load prediction grouping in a layered heterogeneous network, which belongs to the technical field of communication. The method includes the following steps: step 1: the home base stations in the cell periodically obtain load prediction values ​​according to historical load information; step 2: the home base stations in the cell use the obtained load prediction information to periodically group, and each Groups independently allocate frequency spectrum; step 3: after the grouping is determined, the home base stations in the cell independently perform frequency spectrum allocation within the group, and the home base stations in the same group do not reuse frequency spectrum. The method obtains load prediction information for a future period by optimizing historical load information of each home base station and macro base station. The obtained load prediction values ​​of the home base stations are used to group the home base stations in the cell, and after grouping, each group independently uses and allocates spectrum resources, thereby effectively reducing the same-layer interference between the home base stations.

Description

technical field [0001] The invention belongs to the technical field of layered heterogeneous ad hoc networks, and relates to a method for allocating frequency spectrum of home base stations based on load prediction grouping in layered heterogeneous networks. Background technique [0002] In order to meet the rapidly increasing data rate and higher coverage quality requirements of wireless communications in today's world, and significantly improve the performance of cellular networks, 3GPP proposed a heterogeneous network (Heterogeneous Network, Hetnet) technology in the standardization of LTE-Advanced. Especially when the number of heterogeneous small cells is increasing and the density is becoming very high, the existence of these low-power nodes in the heterogeneous network greatly shortens the distance between the wireless network base station and the user. The quality of the wireless signal is also enhanced. Heterogeneous network technology greatly improves the spectrum...

AI Technical Summary

Problems solved by technology

Network nodes in the same network share a section of spectrum resources. Each network node can use a certain number of spectrum resource sets. However, due to the lack of centralized control equipment, network planning cannot be performed like traditional cellular networks. Some network nodes use self-organization The ground form exists, which causes interference between transmission links of different network nodes and low efficiency of spectrum use

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