Random access method, user equipment and base station equipment

A technology of random access response and preamble sequence, which is applied in the directions of multiple use of transmission paths, pilot signal allocation, digital transmission systems, etc. The effect of reducing the request delay and reducing the delay

Active Publication Date: 2019-01-01
BEIJING SAMSUNG TELECOM R&D CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is: the beam failure recovery process in the prior art is based on contention-free, but it does

Method used

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

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0076] Example 1

[0077] In this embodiment, a resource configuration method for a beam failure recovery request will be introduced in conjunction with a specific system. Assuming that the base station works in a high frequency band, multi-beam operation is used to compensate for the larger path loss. The beam failure recovery request uses dedicated time-frequency resources and sequence resources. This time-frequency resource is similar to the random access channel time-frequency resource, and can be distinguished from the random access channel time-frequency resource through frequency division multiplexing, or through time division multiplexing Use methods to distinguish, etc.

[0078] The base station uses high-level signaling or downlink control information to configure resources for beam failure recovery requests. The resources include time-frequency resources and sequence resources. First, the sequence resource allocation method provided in this embodiment is described. T...

Example Embodiment

[0109] Example 2

[0110] In this embodiment, a process of beam failure recovery will be introduced in conjunction with a specific system. In this embodiment, the beam failure recovery process is briefly described as follows:

[0111] The terminal reads the dedicated channel time-frequency resource and preamble sequence resource used for the beam failure recovery process.

[0112] If the terminal needs to send a beam failure recovery request, it determines to select a downlink candidate beam according to the downlink measurement result, and selects the time-frequency resource and the preamble sequence according to the correspondence between the downlink transmission beam and the time-frequency resource / preamble sequence. If the downlink candidate beam selected by the terminal according to the measurement result cannot select the corresponding time-frequency resource / preamble sequence (for example, the downlink transmission beam is not in the correspondence list), the terminal choose...

Example Embodiment

[0123] Example 3

[0124] In this embodiment, a method for requesting system information transmitted on demand will be introduced in conjunction with a specific system. In this embodiment, the process for the terminal to obtain on-demand transmission system information is:

[0125] The terminal selects the preamble sequence to be transmitted according to the corresponding relationship between the system information or system information group transmitted on demand and the random access preamble sequence;

[0126] The terminal sends the corresponding preamble sequence in the random access channel;

[0127] The terminal detects the random access response in the downlink control channel, and obtains the time-frequency resource position of the system information.

[0128] In this embodiment, it is assumed that the base station reserves a part of the preamble sequence and establishes a corresponding relationship with the corresponding system information or system information group. The cor...

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Abstract

The invention discloses a beam failure recovery request method, which comprises the steps of obtaining channel time-frequency resource allocation information and preamble sequence configuration information for transmission of a beam failure recovery request; selecting candidate downlink transmission beams according to a measurement result; selecting a channel time-frequency resource and/or preamble sequence according to a corresponding relationship between the downlink transmission beams and channel time-frequency resources and/or preamble sequences, the time-frequency resource allocation information and the preamble sequence configuration information; and transmitting the preamble sequence on the channel time-frequency resource. Compared with the prior art, optimization is performed on the resource allocation and process in allusion to the beam failure recovery request, the signaling overhead can be effectively reduced, and the access time delay is reduced.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, and more specifically, to a random access method, user equipment, and base station equipment. Background technique [0002] With the rapid development of the information industry, especially the growing demand from the mobile Internet and the Internet of Things (IoT, internet of things), it brings unprecedented challenges to future mobile communication technologies. For example, according to the report ITU-R M.[IMT.BEYOND 2020.TRAFFIC] of the International Telecommunication Union ITU, it can be predicted that by 2020, the growth of mobile traffic will increase by nearly 1,000 times compared to 2010 (4G era), and the number of user equipment connections will also increase. It will exceed 17 billion. As massive IoT devices gradually penetrate into mobile communication networks, the number of connected devices will become even more astonishing. In response to this unprecedented...

Claims

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Application Information

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IPC IPC(8): H04W74/00H04W74/08
CPCH04W74/006H04W74/0833H04L5/0048H04L5/0094
Inventor 钱辰熊琦喻斌
Owner BEIJING SAMSUNG TELECOM R&D CENT
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