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Method and base station for adjusting density of PRACH (Physical Random Access Channels)

A density and channel technology, applied in the field of adjusting PRACH channel density, can solve problems such as high cost and inaccurate configuration

Active Publication Date: 2013-10-02
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to at least solve one of the above-mentioned technical defects, especially solve the defects of high cost and inaccurate configuration in the prior art due to relying on manual operation to configure the PRACH signal density

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  • Method and base station for adjusting density of PRACH (Physical Random Access Channels)
  • Method and base station for adjusting density of PRACH (Physical Random Access Channels)
  • Method and base station for adjusting density of PRACH (Physical Random Access Channels)

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Embodiment Construction

[0027] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0028] The present invention mainly lies in that the configuration of the PRACH density is automatically adjusted by the base station according to the obtained service intensity information (such as call arrival rate and cut-in request rate, etc.), so manual participation is not required, the operation and maintenance cost is very low, and the base station of the present invention can be based on Environmental changes adjust the PRACH density in real time to provide better service quality and greater throughput. Moreover, the adjustment of...

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Abstract

The invention provides a method for adjusting the density of PRACH (Physical Random Access Channels). In the method, a base station acquires service strength information of a cell within a period T; the base station calculates the density L of the PRACH actually needed at present according to the acquired service strength information; the base station acquires the density N of the PRACH channel according to the density L of the PRACH actually needed at present; and the base station adjusts the density of the PRACH channel according to the acquired density N of the PRACH channel. In the invention, the configuration of the density of the PRACH is automatically adjusted according to the service strength information by the base station without manual participation, and the base station of the invention can adjust the density of the PRACH in real time according to the environmental variation, thereby better service quality and greater thuoughput are provided.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and a base station for adjusting channel density of a PRACH (Physical Random Access Channel, Physical Random Access Channel). Background technique [0002] In an LTE (Long-Term Evolution, long-term evolution) system, a terminal uses a PRACH channel to initiate random access and establish an uplink. The PRACH channel needs to occupy certain uplink time-frequency resources. If too many PRACHs are reserved, the time-frequency resources of the uplink shared channel will be excessively preempted, resulting in a decrease in the total throughput; and if the number of PRACHs is insufficiently reserved, the collision of resource preemption when the terminal initiates random access will increase, resulting in Decrease in access success rate. Therefore, the setting of the PRACH channel density plays a very important role in improving the system capacity and guarant...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/04H04W16/18H04W74/08H04W88/08
Inventor 张杰王彦房家奕
Owner DATANG MOBILE COMM EQUIP CO LTD
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