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Random access method, network side equipment and user terminal

A network-side device and user terminal technology, which is applied in the direction of multiple use of transmission paths, sub-channel allocation of transmission paths, digital transmission systems, etc., to achieve the effect of reducing time and fast random access

Active Publication Date: 2021-05-04
CHINA MOBILE COMM LTD RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, according to the existing mechanism of LTE (Long Term Evolution, long-term evolution), it is impossible for the base station to know when the UE has finished sending all the preambles that the UE wants to send.

Method used

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  • Random access method, network side equipment and user terminal
  • Random access method, network side equipment and user terminal
  • Random access method, network side equipment and user terminal

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Embodiment Construction

[0056] In order to make the technical problems, technical solutions and advantages to be solved by the embodiments of the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0057] Embodiments of the present invention provide a random access method, network-side equipment, and user terminal, enabling the network-side equipment to accurately determine whether the UE has sent all the preambles during the random access process.

[0058] Embodiments of the present invention provide a random access method, which is applied to network side equipment, such as figure 1 shown, including:

[0059] Step 101: The network side device specifies to the user terminal a specific random access preamble that needs to be sent by the user terminal at the end in the msg1 sending process.

[0060] Wherein, msg1 refers to the first message sent by the user terminal to the network side device during the random access process.

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PUM

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Abstract

The invention provides a random access method, network side equipment and user terminal, belonging to the field of wireless technology. Wherein, the random access method is applied to the network-side device, including: the network-side device specifies to the user terminal a specific preamble that needs to be sent by the user terminal at the end of the msg1 sending process; and / or the network-side device notifies the user terminal Information about the timer used to time the interval between sending the preamble twice. The random access method is applied to the user terminal, including: the user terminal receives the specific preamble sent last in the msg1 sending process specified by the network side device; and / or the user terminal receives the message sent by the network side device for The information of the timer for timing the preamble interval is sent twice before and after. The technical solution of the present invention enables the network side equipment to accurately judge whether the UE has sent all the preambles during the random access process.

Description

technical field [0001] The present invention relates to the field of wireless technology, in particular to a random access method, network side equipment and user terminal. Background technique [0002] In the existing 3GPP ((3rd Generation Partnership Project, Third Generation Partnership Project) agreement, RAN (Radio Access Network, radio access network) 2 determines that UE (User Equipment, user equipment) can Send multiple different preambles. Before the UE sends the preambles, the base station side can bind these preambles to different downlink beams. By sensing which preambles the UE sends, the base station side can know that for the UE, the base station Which downlink beams on the side can provide good enough gain. Similarly, when the UE sends these preambles, it may also select different uplink beams of the UE for transmission, and then the energy of the preamble received by the base station side (RSRP (ReferenceSignal Receiving Power, Reference signal received pow...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W74/00H04W74/08H04L5/00
CPCH04W74/0833H04L5/0048H04L5/0053H04W74/002
Inventor 刘洋刘亮杨光
Owner CHINA MOBILE COMM LTD RES INST