Method for selecting access carrier of N-frequency point cell

Abstract

The invention discloses a method for selecting an access carrier of an N-frequency point cell, which comprises: dividing the N carriers of the N-frequency point cell into two classes, namely full coverage carriers covering the whole cell and central coverage carriers covering only the central area of the cell in advance, wherein the full coverage carriers comprise the main carrier of the N-frequency point cell; determining the ratio flag2 of the number of the neighboring cells having a frequency different from that of the current cell to the number of the total number of the neighboring cellsof the current cell; when UE selects an access carrier, calculating the priority of each carrier according to the residual physical resource, uplink interference level and the flag2 of each of the N carriers; determining a candidate access carrier group according to the priority of each carrier and selecting the carrier according to a priority sequence from high to low of the carriers in the candidate access carrier group; and allowing the UE to access the selected carrier in a time slot when the interference is the smallest. The method of the invention can realize the load balance of the carriers of the N-frequency point cell and improve system capacity.

Description

technical field [0001] The invention relates to a carrier selection technology, in particular to a method for selecting an access carrier in an N-frequency point cell. Background technique [0002] In order to meet the needs of large capacity and some high-speed data services in the mobile network, the concept of N-frequency cell is introduced into TD-SCDMA. In an N-frequency cell, multiple carrier frequencies exist in the same coverage area (sector), and one of the allocated N frequency points is determined as the main carrier frequency, and the remaining frequency points are divided into auxiliary carrier frequencies. In the same sector, DwPTS and broadcast information are only sent on the main carrier frequency, and the common channel is limited to the main carrier frequency, which improves the system capacity in the coverage area while reducing the inter-carrier interference of the common channel . [0003] In an N-frequency cell, when the UE initially accesses and swi...

AI Technical Summary

Problems solved by technology

However, in some networking scenarios, this carrier selection method will lead to great differences in the actual load between carriers, and the QoS of users on different carriers will vary greatly, which will affect the system capacity and user experience.

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