Configuration method and device for physical random access channel (PRACH) and base station

A technology of physical random access and configuration method, which is applied in the field of configuration of physical random access channel PRACH, and can solve problems such as uplink receiving interference from remote base stations

Active Publication Date: 2018-10-23
CHINA MOBILE COMM LTD RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a physical random access channel PRACH configuration method, device and base station, to solve the solution in the prior art to avoid the remote interference caused by the atmospheric waveguide, there is still the local uplink reception is seriously affected by the remote base station interfering situation issues

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  • Configuration method and device for physical random access channel (PRACH) and base station
  • Configuration method and device for physical random access channel (PRACH) and base station
  • Configuration method and device for physical random access channel (PRACH) and base station

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Embodiment 1

[0121] Such as figure 2 As shown, Embodiment 1 of the present invention provides a physical random access channel PRACH configuration method, which can be applied to a base station, and the configuration method includes:

[0122] Step 21: When it is detected that there is signal interference in the target base station, acquire a preset number of consecutive physical resource blocks with the least interference in the bandwidth of the target base station;

[0123] Step 22: Determine the starting position of the target frequency point according to the obtained information of the physical resource block;

[0124] Step 23: Modify the frequency point offset position of the physical random access channel PRACH of the target base station according to the starting position of the target frequency point.

[0125] Wherein, the signal interference may be atmospheric waveguide interference. The preset number is preferably 6. The foregoing base station and the target base station may be...

Embodiment 2

[0180] Such as Figure 4 As shown, Embodiment 2 of the present invention provides a physical random access channel PRACH configuration device, which can be applied to a base station, and the configuration device includes:

[0181] The first obtaining module 41 is configured to obtain a preset number of consecutive physical resource blocks with the least interference in the bandwidth of the target base station when detecting that there is signal interference in the target base station;

[0182] The first determination module 42 is used to determine the starting position of the target frequency point according to the obtained information of the physical resource block;

[0183] The first processing module 43 is configured to modify the frequency point offset position of the physical random access channel PRACH of the target base station according to the starting position of the target frequency point.

[0184] The device for configuring the physical random access channel PRACH ...

Embodiment 3

[0201] Such as Figure 5 As shown, Embodiment 3 of the present invention provides a base station, including:

[0202] The processor 51 is configured to acquire a preset number of consecutive physical resource blocks with the least interference in the bandwidth of the target base station when it is detected that there is signal interference in the target base station;

[0203] Determine the starting position of the target frequency point according to the obtained information of the physical resource block;

[0204] Modifying the frequency point offset position of the physical random access channel PRACH of the target base station according to the starting position of the target frequency point.

[0205] The base station provided in Embodiment 3 of the present invention obtains a preset number of consecutive physical resource blocks with the least interference in the bandwidth of the target base station when detecting that there is signal interference in the target base station...

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Abstract

The invention provides a configuration method and device for a physical random access channel (PRACH) and a base station. The configuration method comprises the following steps of acquiring a preset number of continuous physical resource blocks with the smallest interference in the bandwidth of a target base station when the signal interference of the target base station is detected; determining an initial position of a target frequency point according to the obtained information of the physical resource blocks; and modifying a frequency point offset position of the physical random access channel (PRACH) of the target base station according to the initial position of the target frequency point. According to the scheme, the interference can be effectively reduced, and a problem that local uplink receiving is still seriously interfered by a far-end base station in a scheme of avoiding the far-end interference caused by the atmospheric waveguide in the prior art is solved to the greatestextent.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a configuration method, device and base station of a Physical Random Access Channel (PRACH). Background technique [0002] With the rapid development of the TD-LTE (Time Division Long Term Evolution, Time Division Long Term Evolution) industry, the interference caused by the atmospheric waveguide effect on the downlink of the far-end base station of the time-division duplex TDD system to the uplink of the near-end base station is also intensified. Atmospheric ducting is a phenomenon that due to the temperature inversion in the troposphere or the level where water vapor decreases sharply with height, radio waves form super-refraction propagation in this layer, and most radio wave radiation is limited to propagate in this layer. When the atmospheric waveguide occurs, the downlink signal of the remote base station still has a high strength after being transmitted over...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/08H04W74/08H04L5/00
CPCH04L5/0005H04W74/0833H04W72/541
Inventor 曹丽芳江天明张龙邓伟
Owner CHINA MOBILE COMM LTD RES INST
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