Random access collision back-off method

A random access and random number technology, applied in the field of communication, can solve the problems of less attention and limited scope of use of the probability backoff mechanism

Inactive Publication Date: 2009-04-01
ZTE CORP
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  • Abstract
  • Description
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Problems solved by technology

The existing technology mainly uses a certain parameter in the specific system to realize the back-off mechanism, and the scope of application is limited, but

Method used

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Embodiment Construction

[0013] The specific implementation manners of the present invention will be described in detail below with reference to the accompanying drawings.

[0014] In the method of the present invention, the random access process in the cell is classified according to different trigger service categories, and different categories correspond to certain numerical values ​​to complete the realization of the backoff mechanism in the random access process.

[0015] figure 1 is a flow chart of the random access collision avoidance method according to the present invention. Such as figure 1 As shown, the method includes the following steps:

[0016] S102, classify the services that trigger random access, and assign thresholds to the classified service types; and

[0017] S104, the user terminal performs random access according to a relevant threshold.

[0018] Wherein, the threshold values ​​corresponding to each classified service may be the same or different.

[0019] In step S102, th...

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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...

Claims

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Application Information

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IPC IPC(8): H04W74/08
Inventor 王斌李峰朱常青赵建平杜忠达梁枫赵楠彭爱华
Owner ZTE CORP
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