On-demand system information request response, receiving method and device, and base station

Abstract

An on-demand system information request response, receiving method and device, and a base station. The on-demand system information request response method includes: receiving an on-demand system information request sent by at least one user equipment using message 3; in the MAC subheader corresponding to the response message Configuring identification information, where the identification information is used to indicate that the response message is for the on-demand system information request; configuring a feedback message for the on-demand system information request in the response message, where the feedback message includes The type of on-demand system information received; the response message is sent as message 4 at the specified resource location. The technical scheme of the present invention can realize the response to the on-demand system information request by using the message 3, and avoid the collision between the request for the on-demand system information and the random access.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to an on-demand system information request response, receiving method and device, and a base station. Background technique [0002] Both the long term evolution (Long Term Evolution, LTE) system and the new radio (New Radio, NR) system support contention access and non-contention random access procedures. [0003] In LTE contention random access, such as figure 1 As shown, the whole process includes the following steps: S1: random access preamble (preamble) transmission; S2: random access response reception; S3: message 3 (Msg3) transmission; S4: message 4 (Msg4) contention resolution. In step S1, it is mainly used to notify the base station (eNodeB) that there is a random access request, and at the same time enable the base station to estimate the transmission delay between it and the user equipment (User Equipment, UE), and use this to calibrate the uplink timing, ...

AI Technical Summary

Problems solved by technology

[0006] However, in NR systems, if the UE sends message 3 only to request on-demand system information, there is no need for contention resolution procedure

Since the UE sending the on-demand system information request message uses public random access resources to send message 3 of the random access process, the UE may collide with a normal access UE when sending message 3. If the LTE mechanism is used, May cause UE decoding error, resulting in process failure

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