Method and device for power control of physical random access channel (PRACH)

A random access channel and power control technology, applied in the field of communication, can solve the problems that users cannot quickly access the network, power control cannot meet the user's access delay requirements, and reduce user satisfaction, etc.

Active Publication Date: 2012-11-14
ZTE CORP
View PDF4 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the PRACH power control technologies proposed by various standard organizations configure power control parameters from the perspective of ensuring user access to the network, and uniformly configure a set of same power control parameters for all base stations, an...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and device for power control of physical random access channel (PRACH)
  • Method and device for power control of physical random access channel (PRACH)
  • Method and device for power control of physical random access channel (PRACH)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] In this example, the terminal (MS_1) and the base station (BS_1) complete downlink synchronization, and MS_1 has successfully received the system configuration information sent by BS_1, wherein the system configuration information includes at least PRACH power control configuration information.

[0073] In this embodiment, BS_1 may include uniformly configured P in the configuration information of the PRACH power control. 0，pre and dP rampup , about to P 0，pre and dP rampup It is equally divided into a quantized value and configured on each terminal (including MS_1).

[0074] In this embodiment, the specific process for realizing the PRACH power control of MS_1 may include the following steps:

[0075] Step 201: MS_1 obtains the power P that BS_1 expects to initially receive on the PRACH allocated to the terminal from the PRACH power control configuration information sent by BS_1 0，pre and the power increase step size dP when the random access signaling is retransmi...

Embodiment 2

[0087] In this example, downlink synchronization between MS_1 and BS_1 is completed, and MS_1 has successfully received system configuration information sent by BS_1, wherein the system configuration information includes at least configuration information of PRACH power control.

[0088] In this embodiment, BS_1 configures the same dP for all terminals rampup , the P 0，pre Quantized to N values, that is, quantized to Configured to each terminal, N is a positive integer greater than or equal to 1, that is, dP rampup Divided into a quantized value, the P 0，pre Divided into N quantized values.

[0089] In this embodiment, the specific process for realizing the PRACH power control of MS_1 may include the following steps:

[0090] Step 301: MS_1 obtains dP from the PRACH power control configuration information sent by BS_1 rampup and quantized to N values ​​of which is

[0091] Step 302: MS_1 quantifies N values ​​according to the obtained P 0，pre get what suits your ne...

Embodiment 3

[0108] In this example, MS_1 has successfully received system configuration information from BS_1, and the system configuration information includes at least PRACH power control configuration information.

[0109] In this embodiment, BS_1 configures the same P for all terminals 0，pre , the dP rampup Quantized to M values, that is, quantized as Configured to each terminal, M is a positive integer greater than or equal to 1, that is, P 0，pre Divided into a quantized value, the dP rampup Divided into M quantized values.

[0110] In this embodiment, the specific process for realizing the PRACH power control of MS_1 may include the following steps:

[0111] Step 1: MS_1 obtains P from the PRACH power control configuration information sent by BS_1 0，pre and are quantized into M values ​​of which is

[0112] Step 2: MS_1 quantifies from dP to M values ​​according to a predetermined principle rampup Select Assigned for MS_1 in

[0113] In this embodiment, the predetermi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a method for power control of a physical random access channel (PRACH). The method comprises that one or more quantized values of power P<0,pre> which is expected to be initially received by a base station from the PRACH allocated to a terminal and one or more quantized values of power rising step length dP<rampup> during random access signaling retransmission are configured on the terminal; according to one or more quantized values of P<0,pre> and one or more quantized values of dP<rampup> which are configured for the terminal, the terminal obtains the P<0,pre> and the dP<rampup> which meet requirements of the terminal; and according to the obtained P<0,pre> and the obtained dP<rampup> which meet requirements of the terminal, the terminal obtains transmitting power P<PRACH> of the terminal on the PRACH. The invention also discloses a device for power control of the PRACH. By the aid of the device, power control parameters which meet time delay requirements of the terminal are configured for the terminal, requirements of different users for access delay are met are met, the access delay of users is reduced, the access network speed of users is improved, and the degree of satisfaction of users is improved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a random access channel (PRACH, Physical Random Access Channel) power control method and device. Background technique [0002] With the development of the mobile Internet and the popularization of smart phones, the demand for mobile data traffic is increasing rapidly, and the rapid growth of data services poses a severe challenge to the transmission capacity of mobile communication networks. According to the prediction of authoritative organizations, in the next ten years, the mobile data business volume will double every year, and will increase by a thousand times in ten years. As the number of mobile Internet access users continues to increase, the user's demand for mobile data services will also continue to increase, and the types of mobile data services will also be continuously updated. Different mobile data services require different quality of service (QoS, Quality of Se...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H04W52/16H04W52/36
CPCH04W52/16H04W52/367H04W52/325H04W52/36H04W52/362H04W52/50
Inventor 刘锟鲁照华郁光辉郝鹏梁春丽夏树强戴博
Owner ZTE CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap