Method, terminal, equipment and system for realizing carrier load balance

Abstract

The embodiments of the present invention relate to a method, terminal, device and system for achieving carrier load balancing. The method for achieving carrier load balancing includes: mapping a terminal onto a reverse carrier by way of a mapping algorithm within the scope of part of or all of the reverse carriers, wherein one reverse carrier onto which the terminal is mapped corresponds to a plurality of forward carriers; and mapping the terminal onto a forward carrier in part of or all of the forward carriers by way of a mapping algorithm within the scope of part of or all of the forward carriers. Therefore, each terminal is mapped onto a reverse carrier by way of a mapping algorithm when a large number of M2M applications or smart terminals use the random access channel. Due to the uniformity or the equal probability characteristic of the mapping algorithm, it is ensured that the numbers of terminals mapped onto various reverse carriers are similar or even the same, such that the numbers of terminals initiating random access on various reverse carriers are similar or even the same as far as possible, i.e. the loads among various random access channels are balanced, achieving load balancing among various reverse carriers.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method, terminal, device and system for realizing carrier load balancing. Background technique [0002] In a wireless communication system, a terminal often adopts a contention-based random access method to achieve reverse access. Since the reverse access channel is a single shared channel, and each terminal device can randomly initiate the access process according to its own wishes, if two or more terminal devices send access information at the same time, the uplink of the air interface Signals will interfere with each other, causing the receiving end to fail to correctly identify each sending end signal. This situation is called random access collision. The way to solve the collision is to back off for a period of time and then initiate an access attempt until the access is successful or the maximum number of access attempts is reached. The occurrence...

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Problems solved by technology

[0006] Therefore, there is an urgent need for a method to solve the problem of unbalanced load between the reverse carriers when the number of forward carriers and reverse carriers is not equal.

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