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Method, device and system for adjusting random access leader sequence

A technology of random access preamble and preamble sequence, applied in the field of communication, to achieve the effect of improving UE access success rate and increasing system capacity

Active Publication Date: 2011-11-02
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the time when the UE initiates access in the actual network is random and constantly changing, the existing fixed allocation method will affect the access success rate of the UE in the system, thereby reducing the system capacity

Method used

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  • Method, device and system for adjusting random access leader sequence
  • Method, device and system for adjusting random access leader sequence
  • Method, device and system for adjusting random access leader sequence

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] see figure 1 , which is a flowchart of a method for configuring a random access preamble provided in this embodiment, the method includes:

[0032] 101: Calculate the average number of times of use of the dedicated access preamble used for non-contention random access in the random access preamble;

[0033] 102: Obtain a predicted value of the number of dedicated access preambles according to the average usage times of the dedicated access preambles;

[0034] 103: Adjust the currently configured number of dedicated access preambles according to the predicted value of the number of dedicated access preambles.

[0035] In this embodiment, the predicted value of the number of dedicated access preambles used for non-contention random access is obtained by calculating the average number of times of dedicated access preambles used for non-contention random access, and according to the prediction of the number of dedicated access preambles The value adjusts the random acces...

Embodiment 2

[0039] join image 3 , is a flowchart of a method for configuring a random access preamble provided in this embodiment. In this embodiment, the RA preamble grouping of each cell is determined by the eNodeB, including the dedicated access preamble, and the numbers of the non-dedicated access preamble group A and group B are determined by the eNodeB and broadcast through system messages to notify the UE. When the access load changes, dynamically adjust the grouping of the RA preamble according to the load change. Among them, the factors that may cause the change of the access load may include: the type of the access UE, the number of the access UE, and the number of access UEs. The method includes:

[0040] 201: Calculate the average usage times of dedicated access preambles for non-contention random access.

[0041] Among them, the average usage times of the dedicated access preamble for non-contention random access can be calculated as follows:

[0042] After each random ...

Embodiment 3

[0117] see Figure 4 , is a schematic structural diagram of an apparatus for adjusting a random access preamble provided in this embodiment. The device may be an eNodeB, and the device includes:

[0118] Calculation module 301, configured to calculate the average number of times of use of dedicated access preambles for non-contention random access in random access preambles;

[0119] An obtaining module 302, configured to obtain a predicted value of the number of dedicated access preambles according to the average number of times of use of the dedicated access preambles;

[0120] The adjustment module 303 is configured to adjust the number of dedicated access preambles currently configured according to the predicted value of the number of dedicated access preambles.

[0121] Further, the device also includes:

[0122] A processing module, configured to make a difference between the total number of random access preambles and the predicted value of the number of dedicated ac...

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Abstract

The invention discloses a method, a device and a system for adjusting random access leader sequence. The method includes: calculating a special access leader sequence average using times for non-completion random access in the random access leader sequence; obtaining amount forecast value in the special access leader sequence according with the average using time of the special access leader sequence; adjusting the special access leader sequence amount in present according with the special access leader sequence amount. An embodiment of the invention also provides an adjusting device and a system. The embodiment can adjust the random access leader sequence according with accessing condition of the user equipment which can increase successful rate for the user equipment accessing, and increase system capacitance simultaneously.

Description

technical field [0001] The present invention relates to the communication field, in particular to a random access preamble sequence adjustment method, device and system. Background technique [0002] RA (Random Access, Random Access) technology is an important technology in the Long Term Evolution (LTE, Long Term Evolution) system, its main purpose is to provide user equipment (UE, User Equipment) with uplink timing synchronization information, and network side Allocate resources for the UE. The random access in the LTE system is divided into contention random access and non-contention random access. [0003] For contention random access, the UE selects a random access preamble from the random access preamble group of the cell, initiates random access, and sends a random access response when the network side detects the random access preamble of the UE message, the random access response message also includes uplink scheduling information, and then the UE sends the messag...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W48/18H04W74/08
Inventor 叶环球彭炳光
Owner HUAWEI TECH CO LTD
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