Method, apparatus, user equipment and base station for requesting system message

Abstract

The invention discloses a method, apparatus, user equipment and base station for requesting a system message. The method herein includes the following steps: transmitting a first random access request which carries at least one lead code which marks a to-be-requested system message; within a preset time period, monitoring a response message which corresponds to the first random access request, the response message carrying information for responding to the lead code; when the response message is monitored, based on the lead code marker contained in the response message, in a transmitting window of the to-be-requested system message which corresponds to the lead code marker, monitoring and receiving the to-be-requested system message. According to the technical solution of the invention, the method herein can prevent the failure of the base station to broadcast second type system messages due to the failure of requesting the to-be-requested system message by the UE through the random access request, and can prevent the subsequent long time delay of obtaining the system message by the UE.

Description

technical field [0001] The present disclosure relates to the field of communication technologies, and in particular to a method, device, user equipment and base station for requesting system information. Background technique [0002] With the rapid development of wireless communication technology, the number of Long Term Evolution (referred to as LTE) system information (referred to as SI) increases, and the transmission of LTE system information by periodic broadcasting makes the power consumption of the base station Larger, lower spectrum resource utilization. For a situation where the number of user equipments (User Equipment, referred to as UE for short) is relatively small, there is a problem of resource waste in periodically broadcasting and sending LTE system messages. In order to alleviate the waste of resources and high power consumption of base stations caused by broadcasting LTE system messages, operators began to consider sending system messages by category to s...

AI Technical Summary

Problems solved by technology

In related technologies, the first type of system message can still be sent by broadcast, and for the second type of system message, a specific preamble (preamble) can be sent by the UE through MSG1 (the first message of the random access procedure) after receiving code) to request the second type of system message, broadcast the second type of system message in the sending window of the second type of system message requested by the UE, but in the related art, the UE may fail to send MSG1 due to the low power of sending MSG1, which in turn leads to The base station does not broadcast the second type of system message because it has not received the request message sent by the UE. The UE can only wait for the next system message cycle to request the second type of system message through MSG1 again, resulting in prolonged time for the UE to obtain the system message. affect performance

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