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Method and device for detecting physical broadcast channel

A physical broadcast channel, undetected technology, applied in the field of methods and devices for detecting physical broadcast channels, can solve the problems of PBCH taking a lot of time, affecting the switching speed of UE network access speed, etc., and achieving the effect of reducing detection delay

Active Publication Date: 2011-05-25
SHANGHAI HUAWEI TECH CO LTD
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Problems solved by technology

[0014] It can be seen that it takes a lot of time to detect PBCH in the existing technology, at least 40ms is required. Usually, it may take up to 70ms to detect PBCH information under the same cycle, which affects the UE network access speed and handover speed in some scenarios.

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  • Method and device for detecting physical broadcast channel
  • Method and device for detecting physical broadcast channel

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Embodiment Construction

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0033] see figure 2 , which is a flowchart of a method for detecting a physical broadcast channel according to an embodiment of the present invention, the method specifically includes:

[0034] Step 201, collecting the first wireless frame data;

[0035] Usually, one wireless frame is 10ms data;

[0036] Step 202, performing PBCH detection on the first wireless frame data;

[0037] In step 203, when the physical broadcast channel information is detected, the cu...

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Abstract

The embodiment of the invention provides a method and a device for detecting a physical broadcast channel. The method comprises the following steps of: collecting first wireless frame data; performing physical broadcast channel detection on the first wireless frame data; and finishing the current detection if the physical broadcast channel information is detected. By applying the embodiment of the invention, when the data is less than 40ms, the required physical broadcast channel (PBCH) information can be acquired by traversing and analyzing data at different positions in a PBCH Buffer. Undernormal condition, the PBCH information can be detected in 10ms, so the detection delay is greatly shortened, and guarantee is provided for other service operation, such as user equipment (UE) accessing, switching and the like.

Description

technical field [0001] The present invention relates to the technical field of detecting physical broadcast channels, in particular to a method and device for detecting physical broadcast channels. Background technique [0002] In the Long Term Evolution (LTE, Long Term Evolution) cellular system, the base station codes and modulates the public information of the cell such as the number of antennas and bandwidth, and sends it cyclically on the Physical Broadcasting Channel (PBCH, Physical Broadcasting Channel) at a certain period. The user equipment (UE ) by detecting the PBCH to obtain the public information of the cell necessary for network access and the wireless frame number (FN, Frame Number) of the system. [0003] The radio frame length of the LTE system is 10 ms, and the PBCH transmission cycle is 40 ms, that is, four consecutive radio frames are sent as a cycle. [0004] The specific transmission process of PBCH is introduced as follows: [0005] A PBCH transport ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/04H04W48/16
Inventor 苏威周卫荣
Owner SHANGHAI HUAWEI TECH CO LTD
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