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Random access method and base equipment, and user equipment

A technology of random access and random access channel, applied in electrical components, wireless communication, etc., can solve problems affecting the success rate of random access, user experience, selection of random access channel resource subset structure and access process, base station failure Obtaining UE beam reciprocity and other issues

Active Publication Date: 2018-07-17
BEIJING SAMSUNG TELECOM R&D CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing random access process of mmWave communication, different processes and channel structures are designed for the cases of beam reciprocity and non-existence of beam reciprocity, but before the random access process, the base station cannot know Due to the beam reciprocity of the UE, it is impossible to directly select the appropriate random access channel resource subset structure and access process for the UE, resulting in the degradation of the random access performance of the UE, which affects the success rate of random access and user experience

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] see image 3 , the following takes the contention-based random access scenario as an example to illustrate the complete process of completing the random access through cooperation of the random access configuration method in this specific embodiment and the random access request method in this specific embodiment.

[0068] Step 301, the base station divides the random access resource configuration information into two types, the first type is random access resource information used when the UE side has beam reciprocity, and the second type is used when the UE side does not have beam reciprocity random access resource information.

[0069] The random access resource is a resource used for the UE to send a random access request to the base station. The random access resources include a subset of random access channel resources or time-frequency resources of the random access channel, preamble resources, and the like. The UE determines the structure of the random access ...

Embodiment 2

[0098] In the solution described in Embodiment 1, the base station distinguishes two types of random access resources in a time-division manner, that is, according to the time-domain position of the time-frequency resource subset of the random access channel resource. This embodiment will describe a base station using code division A random access scheme for distinguishing two types of random access resources in a manner, wherein the same parts as those in Embodiment 1 will not be repeated in this embodiment.

[0099] Step 401, the base station divides the random access resource configuration information into two types, the first type is random access resource information used when the UE side has beam reciprocity, and the second type is used when the UE side does not have beam reciprocity random access resource information.

[0100] The base station divides the available preambles into two types. The first type of preamble is configured for use by UEs with beam reciprocity, a...

Embodiment 3

[0119] This embodiment introduces another random access scheme in which the base station uses code division to distinguish two types of random access resources, which is a further improvement on the basis of the scheme in Embodiment 2. In this embodiment, the same parts as those in Embodiment 2 will not be repeated, and only the different parts will be described.

[0120] In this embodiment, the arrangement method of the time-frequency resources of the random access channel resource subset is the same as the arrangement method (2) of the time-frequency resources of the random access channel resource subset described in step 401 of embodiment 2, that is, multiple random access channel resource subsets Access channel resource subsets are continuously distributed to form random access channel resources, and are periodically and repeatedly distributed in the time domain (or frequency domain) in the form of groups, wherein each random access channel resource subset is composed of mu...

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Abstract

The invention discloses a random access configuration method. The method comprises the following steps: determining random access resource configuration information, wherein the random access resourceconfiguration information comprises random access resource information for UE with beam reciprocity and random access resource information for the UE without the beam reciprocity; sending the randomaccess resource configuration information to the UE, thereby allowing the UE to select the corresponding random access resource to send a random access request including a leader sequence according tothe own beam reciprocity performance and the random access resource configuration information. Compared with the prior art, the available random access resource is divided into two classes, one classis configured to the UE with the reciprocity, and the other class is configured to the UE without the reciprocity; the random access procedures of two classes of UE are integrated, the UE access performance reduction caused by inappropriate resource configuration is avoided, and the whole access performance of the high-frequency communication system is obviously improved.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, and more specifically, to a random access method, base station equipment, and user equipment. Background technique [0002] With the rapid development of the information industry, the growing demand from the mobile Internet and the Internet of Things has brought unprecedented challenges to future mobile communication technologies. At present, the communication industry and academia are conducting extensive research on 5G (fifth-generation mobile communication system) technology, aiming to solve the problems of significant improvement in system throughput, consistency of user experience, scalability to support the Internet of Things, delay, energy efficiency, and cost. , network flexibility, emerging services, and flexible spectrum utilization. [0003] The random access (Random Access, RA) process is an important step in establishing a communication link between the user s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/02H04W72/04H04W74/00H04W74/08
CPCH04W72/02H04W74/0833H04W72/23H04W72/51H04W74/002
Inventor 钱辰喻斌付景兴熊琦张英杰苏笛
Owner BEIJING SAMSUNG TELECOM R&D CENT