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Leader sequence sending method and device

A technology of preamble sequence and transmission method, applied in the field of preamble sequence transmission method and device, capable of solving problems such as low transmission success rate and rising transmission power

Active Publication Date: 2016-10-05
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The present application provides a method and device for transmitting a preamble sequence, which are used to solve the technical problem of low transmission success rate caused by retransmission of the preamble sequence by increasing the transmission power in the prior art

Method used

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  • Leader sequence sending method and device

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Embodiment Construction

[0162] The embodiments of the present application provide a method and device for transmitting a preamble, which are used to solve the technical problem in the prior art that the transmission success rate is low due to the retransmission of the preamble by increasing the transmission power.

[0163] The term "and / or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist simultaneously, and there exists alone B these three situations. In addition, the character " / " in this article generally indicates that the contextual objects are an "or" relationship.

[0164] Various aspects are described herein in connection with user equipment.

[0165] The user equipment may be a wireless terminal or a wired terminal. The wireless terminal may be a device that provides voice and / or data connectivity to the user, a handheld device with a wireless ...

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Abstract

The present invention provides a leader sequence sending method and device. The method comprises: user equipment (UE) sends a first leader sequence by using a repetition factor N1 according to a first sending power; if the UE does not receive the response message corresponding to the first leader sequence sent by a network device in a presetting time segment after sending the first leader sequence, the UE is switched to the next repetition factor N2, wherein the number of continuous sending times indicated by the next repetition factor N2 is larger than the number of continuous sending times indicated by the repetition factor N1; and the UE sends a second leader sequence by using the next repetition factor N2 according to the second sending power.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular to a method and device for sending a preamble. Background technique [0002] In a Long Term Evolution (English: Long Term Evolution, abbreviated: LTE) system, a process of a random access channel (English: Random Access Channel, abbreviated: RACH) of a user equipment (English: User Equipment, abbreviated: UE) is as follows. [0003] The higher layer request triggers the physical layer to send the preamble. The request includes preamble index, target preamble received power (PREAMBLE_RECEIVED_TARGET_POWER), corresponding Random Access-Radio Network Temporary Identity (English: Random Access-Radio Network Temporary Identity, referred to as: RA-RNTI) and physical random access Incoming channel (English: Physical Random Access Channel, PRACH for short) resource information. [0004] Determine the preamble transmission power P according to the following formula ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/36H04W72/04H04W74/08
CPCH04W74/0833H04W52/50H04W52/38H04W52/146H04W52/242H04W52/367H04W52/325H04W52/10H04W52/06H04W52/28
Inventor 胡文权花梦
Owner HUAWEI TECH CO LTD
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