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A method to dynamically regulate distribution of PRACH resource

A technology of resource allocation and dynamic adjustment, applied in the field of WCDMA system, can solve problems such as lack of flexibility

Inactive Publication Date: 2007-05-16
上海宇梦通信科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The allocation of the PRACH subchannel set and signature set is not taken into account, the adjustment effect obtained may not be ideal, and it lacks flexibility
In addition, the ASCi access rate of the PRACH channel is derived according to the linear relationship equation corresponding to Pi, which is an oversimplified assumption

Method used

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  • A method to dynamically regulate distribution of PRACH resource
  • A method to dynamically regulate distribution of PRACH resource
  • A method to dynamically regulate distribution of PRACH resource

Examples

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Embodiment Construction

[0072] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0073] The present invention provides a method for dynamically adjusting PRACH resource allocation. According to the actual load situation of each ASC in the system, dynamically adjust the resources of the PRACH channel allocated to each ASC. The specific steps are as follows, refer to FIG. 4, which is according to the present invention A flow chart of dynamically adjusting PRACH resources in an embodiment:

[0074] Step 1, through the system message, set the terminal to perform "traffic measurement" of RACH;

[0075] Step 2, setting the timer Tp, the timing length is the period of PRACH resource adjustment;

[0076] Step 3, waiting for the timer Tp to expire;

[0077] Step 4, after the timer Tp expires, calculate the G value of each ASC, the GO value; Wherein the G value refers to the measured ratio of the buffering amount of the radio bear...

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Abstract

The disclosed dynamic adjusting method for PRACH resource allocation comprises: detecting RACH business quantity for real loading of every ASC to obtain dynamic requirement of ASC, then dynamic adjusting the PRACH resource allocation. Wherein, the adjustment comprises refers to the sustained probability and PRACH division. This invention has better flexibility.

Description

technical field [0001] The present invention relates to a WCDMA system, and more specifically, the present invention relates to a resource allocation method of an uplink public channel PRACH. Background technique [0002] In a code division multiplexing (CDMA) communication system using frequency division multiplexing (FDD), such as 3GPP, the physical random access channel (PRACH) is used to send signaling to the network when the terminal establishes an initial connection with the network, Or in response to the paging message of the network, it can also be used to send discontinuous data packets. In the 3GPP FDD system, a PRACH is divided into radio frames of 10 milliseconds, and each frame consists of 15 time slots. The serial number of the radio frame is allocated sequentially, from 0 to 255 and repeats cyclically. Two consecutive radio frames form a complete access frame, and the access frame is divided into 15 access slots, and each access slot has a length of 2 radio ...

Claims

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Application Information

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IPC IPC(8): H04Q7/38H04J13/00H04W72/08H04W72/04
Inventor 吴亮
Owner 上海宇梦通信科技有限公司
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