Random access collision back-off method

Abstract

The invention provides a random access collision retreat method, comprising: the step S102, classifying service of triggering the random access operation, and distributing threshold values to the classified service, performing random access operation according to the threshold values by user terminals, wherein the step S104 comprises: the step S104a, the user terminals generates random number, and compares the random number with the threshold values, and the step S104b, the user terminals randomly select a signature code from available random access signature code aggregate and transmit to the network side to perform random access operation, when the comparing result of the random number and the threshold values satisfies the scheduled requirement; when the comparing result of the random number and the threshold values does not satisfy the scheduled requirement, returning to the step S104a.

Description

technical field

[0001] The invention relates to the communication field, in particular to a random access collision avoidance method used in a communication system. Background technique

[0002] With the evolution of the network and the development of communication technology, the new generation of mobile communication system must be able to support all-IP high-speed packet data transmission above 100Mbps (Mbps: Megabit per second), support high terminal mobility, and support high transmission quality , Provide high spectral efficiency and power efficiency, and can effectively support changes in a large dynamic range such as user data rate, user capacity, service quality, and mobile speed. Due to the increase of user density, the increase of business volume and the increase of mobile speed, the random access resources are in short supply. Therefore, while ensuring the quality of user access, it is necessary to further improve the use efficiency and method of random access re...

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