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Leader sequence transmission method, device and system

A technology of preamble sequence and transmission method, which is applied in the directions of access restriction, electrical components, wireless communication, etc., and can solve the problem of inability to correctly match the preamble sequence, the matching probability of the base station, the low efficiency of user equipment accessing the base station, and the low signal strength of the preamble sequence And other issues

Active Publication Date: 2014-07-09
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, since the preamble sent by the user equipment located in the basement or other user equipment with a large link loss has a large loss during transmission, the base station cannot correctly receive the preamble or the received preamble signal strength If the user equipment does not receive a response message from the base station within a predetermined time, the user equipment will select another random access channel to send the re-selected preamble to the base station, which is The user equipment will continue to send randomly selected preambles to the base station, but the base station still cannot match correctly, resulting in a reduction in the matching probability of the base station and the efficiency of user equipment accessing the base station

Method used

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  • Leader sequence transmission method, device and system
  • Leader sequence transmission method, device and system
  • Leader sequence transmission method, device and system

Examples

Experimental program
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Effect test

Embodiment 1

[0074] The embodiment of the present invention provides a method for transmitting a preamble sequence, which involves the user equipment side, such as figure 2 Shown, including:

[0075] S101. The user equipment obtains system information or a physical broadcast channel PBCH broadcast by a base station. The system information or PBCH includes a preset physical random access channel PRACH, and the preset PRACH includes m preset radio frames, where m is a positive integer.

[0076] In the embodiment of the present invention, once the user equipment enters the coverage area of ​​the base station, the user equipment can obtain the system information or PBCH broadcast by the base station. The system information or PBCH includes the preset PRACH and multiple preamble sequences available to the user equipment. Both the preset PRACH and the available preamble sequence are necessary conditions for the user equipment to access the base station.

[0077] The preset PRACH includes m preset radi...

Embodiment 2

[0149] Such as Figure 13 As shown, an embodiment of the present invention provides a user equipment 4, including:

[0150] The first receiving unit 40 is configured to obtain system information or PBCH broadcast by a base station, the system information or the PBCH includes a preset PRACH, and the preset PRACH includes m preset radio frames, where m is a positive integer .

[0151] The first processing unit 41 is configured to determine that the number of repetitions of the preamble sequence used for random access at the preset resource location of the preset PRACH is n times, where 1≤n≤10m.

[0152] The first sending unit 42 is configured to send the preamble sequence to the base station at n preset resource positions of the preset PRACH.

[0153] The first processing unit 41 is specifically configured to determine, according to the system information or the PBCH, that the number of repetitions of the preamble sequence at the preset resource location of the preset PRACH is n times. ...

Embodiment 3

[0179] Such as Figure 16 As shown, an embodiment of the present invention provides a user equipment 4, including:

[0180] The first receiver 44 is configured to obtain system information or PBCH broadcast by the base station, where the system information or the PBCH includes a preset PRACH, and the preset PRACH includes m preset radio frames, where m is a positive integer .

[0181] The first processor 45 is configured to determine that the number of repetitions of the preamble sequence used for random access at the preset resource location of the preset PRACH is n times, where 1≤n≤10m.

[0182] The first transmitter 46 is configured to send the preamble sequence to the base station at n preset resource positions of the preset PRACH.

[0183] The first processor 45 is specifically configured to determine, according to the system information or the PBCH, that the number of repetitions of the preamble sequence at the preset resource location of the preset PRACH is n times.

[0184] Alt...

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Abstract

The embodiment of the invention provides a leader sequence transmission method, device and system, and relates to the field of communications. According to the leader sequence transmission method, device and system, the intensity of leader sequence signals received by a base station can be enhanced, therefore, the matching probability of the base station is increased, and the efficiency at which a user has access to the base station is increased. The method includes the steps that system information broadcasted by the base station or a physical broadcast channel (PBCH) is obtained, wherein the system information or the PBCH comprises a preset physical random access channel (PRACH), the preset PRACH comprises preset m wireless frames, and m is a positive integer; it is determined that the repetition times of leader sequences used for random access at preset resource positions of the preset PRACH are n, wherein n is larger than or equal to 1 and smaller than or equal to 10 m; the leader sequences are sent at the n preset resource positions of the RRACH to the base station.

Description

Technical field [0001] The present invention relates to the field of communications, and in particular to a method, device and system for transmitting a preamble sequence. Background technique [0002] With the continuous development and improvement of communication systems, people's requirements for communication quality are getting higher and higher, that is, they hope to communicate not only on the ground or in the open, but also in relatively hidden places such as basements. [0003] Currently, a radio frame is composed of 10 subframes, and the 10 subframes are respectively numbered as subframe 0, subframe 1, subframe 2, ..., subframe 9. Taking a radio frame of 10 milliseconds as an example, each subframe of the radio frame is 1 millisecond, and if the preamble sequence is also 1 millisecond, then each subframe of the radio frame can send a preamble sequence. [0004] In the prior art, the process of the user equipment randomly accessing the base station is the first step for th...

Claims

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Application Information

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IPC IPC(8): H04W74/08
CPCH04W48/12H04W74/0833H04W72/30
Inventor 夏金环吕永霞
Owner HUAWEI TECH CO LTD
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