A method and device for load balancing

Abstract

The invention discloses a load balancing method, and relates to the technical field of communication. The load balancing method is used for being capable of achieving load balancing of a terminal in a base station. The method comprises the steps that the resource consumption rate of a main cell, the resource consumption rates of all auxiliary cells and the resource consumption rates of non-carrier aggregation terminals in the main cell within the preset time are obtained; whether the resource consumption rate of the main cell, the resource consumption rates of all the auxiliary cells and the resource consumption rates of the non-carrier aggregation terminals in the main cell meet preset conditions or not is judged; when the resource consumption rate of the main cell, the resource consumption rates of all the auxiliary cells and the resource consumption rates of the non-carrier aggregation terminals in the main cell meet the preset conditions, the current non-carrier aggregation terminal with the largest resource consumption rate of the main cell is switched to the current auxiliary cell with the smallest resource consumption rate. The load balancing method is suitable for being used in the process of load balancing in the base station.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a load balancing method and device. Background technique [0002] Carrier aggregation technology is an important technology in LTE-Advanced. Carrier aggregation means that user data can be simultaneously transmitted on multiple component carriers (CC, Component Carrier), which is equivalent to increasing the user's transmission bandwidth. CC represents an uplink carrier or a downlink carrier. Generally, component carriers can be divided into primary component carriers (PCC, primary CC) and secondary component carriers (SCC, secondary CC) to facilitate management of component carriers, and it is stipulated that each UE has at most one uplink PCC and one downlink PCC. A downlink PCC and an uplink PCC are associated together to form a primary cell (PCell); a downlink SCC and an optional uplink SCC are associated together to form a secondary cell (SCell). [0003] C...

AI Technical Summary

Problems solved by technology

If a CC is used as a PCC to access too many users or services, which exceeds the maximum capacity that the CC can carry, it will lead to reconfiguration of control resources and increase a large amount of signaling overhead, and will also cause users or services to not be scheduled in time, affecting User's communication quality

[0004] Since the user selects the carrier based on certain principles, the user changes from the idle state to the connected state, and the carrier becomes the PCell of the user. In this way, the distribution of users may be unbalanced on each CC under the same eNB. As a PCC, it is already in a saturated state, while other CCs are not fully utilized as PCCs.

Therefore, in the carrier aggregation system, there will be load imbalance between CCs under the same eNB

Images