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Random access method and device, user equipment and base station

A random access and base station technology, applied in the field of communication, can solve the problems that the UE cannot determine the uplink beam, does not have the consistency of sending and receiving, and achieves the effect of saving resource consumption and increasing the probability of random access

Active Publication Date: 2021-06-04
KONINKLJIJKE PHILIPS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for a UE that does not have the consistency of sending and receiving, the UE cannot determine its own uplink beam, which requires the UE to try to send in different beams in order to determine the most suitable uplink beam

Method used

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  • Random access method and device, user equipment and base station
  • Random access method and device, user equipment and base station
  • Random access method and device, user equipment and base station

Examples

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Embodiment Construction

[0113] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.

[0114] figure 1 is a flow chart of a random access method shown in an exemplary embodiment of the present application. This embodiment is described from the UE side, as shown in figure 1 As shown, the random access method includes:

[0115] In step S101, when random access is initiated, a physical random access channel (PRACH) resource for multi-preamble transmission is obtained from the curre...

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Abstract

The present disclosure relates to a random access method and device, user equipment, base station and computer-readable storage medium. Wherein, the random access method includes: when initiating random access, obtaining the PRACH resource for multi-preamble sequence preamble transmission from the currently associated downlink beam, and the PRACH resource is used to indicate the multi-preamble transmission opportunity; Start to transmit the preamble at any time-frequency resource position of the transmission opportunity, and start to monitor the RAR receiving window after all preamble transmissions are completed; if the RAR is received in the RAR receiving window, determine the sending beam that the RAR responds to, and send the message to the base station through the sending beam MSG3, and wait to receive MSG4 returned by the base station. In the embodiment of the present disclosure, the RAR reception window is monitored after all preamble transmissions are completed, which can save resource consumption.

Description

technical field [0001] The present disclosure relates to the field of communication technologies, and in particular, to a random access method and device, user equipment, base station, and computer-readable storage medium. Background technique [0002] In a Long Term Evolution (LTE for short) system, a base station sends a broadcast to cover an entire sector through a beam (beam). In New Radio (NR), the base station can cover a sector by scanning with a narrower beam, that is, the base station only sends a narrow beam in a certain direction at a certain moment, and then continuously changes the beam direction to achieve coverage of one sector. Such a scenario is called a multi-beam (Multi-beam) scenario. [0003] In the Multi-beam scenario, the user equipment (UE) first correlates to a best downlink beam by measuring the downlink signal. For a UE capable of sending and receiving consistency (Tx-Rx correspondence), the UE can determine the most suitable uplink beam by rece...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/32H04W74/00H04W74/08H04W72/04
CPCH04W52/325H04W74/004H04W74/006H04W74/0866H04W74/0875H04W72/0446H04W72/0453H04W72/046H04W72/23H04W74/0833H04W52/367H04W76/11H04W24/08
Inventor 江小威
Owner KONINKLJIJKE PHILIPS NV