Load balancing method and device based on multi-carrier aggregation

Abstract

The present invention relates to the communication field, in particular to a load balancing method and device based on multi-carrier aggregation, which is used to reduce the system load of load balancing based on carrier aggregation under C-RAN. The method is: under the C-RAN architecture, the BBU is a unit that collects the equivalent PRB utilization rate of each cell in the system at the signaling layer. The BBU will locally screen out the cells to be balanced according to the collected equivalent PRB utilization rate, and have a CA relationship between the cell to be balanced and the corresponding In this way, it can effectively reduce the amount of messages exchanged by the BBU at the service layer in accordance with the CA relationship for equivalent PRB utilization, thereby effectively improving the performance of the network load balancing algorithm and reducing the system load. It also improves the network quality and effectively improves the user experience.

Description

technical field [0001] The present invention relates to the communication field, in particular to a load balancing method and device based on multi-carrier aggregation. Background technique [0002] Currently, a new type of access network radio framework (C-RAN) is widely used. Under the C-RAN architecture, by reducing the number of base station equipment rooms, reducing energy consumption, and adopting collaboration and virtualization technologies, resource collaboration is realized and spectrum efficiency is improved to achieve low-cost, high-bandwidth, and flexible operation. [0003] Compared with traditional wireless network networking methods, the C-RAN network architecture has the following characteristics: [0004] 1. Indoor baseband processing unit (Building Base band Unit, BBU) centralized. [0005] In a traditional wireless network, each base station (ie, BBU) requires an independent computer room. In C-RAN, a certain number (a dozen, dozens) of BBUs are placed...

AI Technical Summary

Problems solved by technology

[0017] Assuming that a cell can establish a CA relationship with up to 12 other cells, in order to achieve CA-based load balancing, in the worst case, L2 under the C-RAN architecture needs to periodically (eg, 100ms) interact with 12 cells at the same time *The equivalent PRB utilization rate of 144 cells, this amount of interaction increases with the increase of the number of BBUs configured under C-RAN, which makes the overall situation worse

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