Method and corresponding device for random access

Abstract

The invention relates to the technical field of wireless communication, and specifically, relates to a method for random access. The method comprises the following steps: user equipment sends a randomaccess signal comprising a leader sequence and payload data, wherein the leader sequence is set randomly or set according to the number of the leader sequences needed to be sent, and the payload datais set according to current service requirements; the user equipment receives a feedback information which is returned by a base station and corresponding to the random access signal, wherein the feedback information at least comprises one of user unique identifier information, timing advance information, uplink transmission authorization information and an acknowledgement ACK signal / unacknowledged NACK signal. Namely, by design of the random access signal which comprises the leader sequence and the payload data, the scheme can realize functions which can be completed by four interactions ina conventional mode just by two interactions, can be adaptive to new requirements in 5G, and for single data transmission, the scheme can reduce access time delay.

Description

technical field [0001] The present application relates to the technical field of wireless communication, and in particular, the present application relates to a random access method and corresponding equipment. Background technique [0002] With the rapid development of the information industry, especially the growing demand from the mobile Internet and IOT (Internet Of Things, Internet of Things), unprecedented challenges are brought 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...

AI Technical Summary

Problems solved by technology

[0011] The existing random access method includes four-step interaction to complete the functions of uplink synchronization and uplink transmission authorization, which will be limited in the face of new 5G services and new requirements. For example, in the mMTC scenario, many users only need to burst It only needs to send a small packet to the base station permanently, and the user level reaches one million per square kilometer. In this scenario, the four-step random access will cause a very large control signaling overhead

At the same time, using 4-step interaction to complete random access cannot support services with higher latency requirements

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