Patent ID: 8688120
Filing Date: 2014-04-01
Classification: H04L,H04W

Abstract:
1. A method for handover between cells using a plurality of carriers, the method comprising: measuring, by a terminal in a serving cell, a received signal strength of a carrier currently being used by the terminal in the serving cell and a received signal strength of carriers of cells adjacent to the serving cell; when the received signal strength of the carrier currently being used by the terminal in the serving cell is below a threshold value, performing a handover for the terminal to a target cell, the target cell being an adjacent cell including a carrier having a highest measured value of received signal strength among the adjacent cells; when the terminal has entered the target cell by handover, selecting a best carrier from among carriers available in the target cell to enable the terminal to perform frequency conversion to the best carrier; and performing a frequency load balancing procedure for allowing the target cell to distribute traffic of a certain carrier to adjacent carriers, wherein the type of handover performed is based on whether a carrier of the serving cell is a single carrier or a multi-carrier and whether a carrier of the target cell is a single carrier or a multi-carrier, and in the performing of a handover, the carrier of the terminal is switched to a primary carrier of the target cell.