Method and device of initial accessing of wireless terminal

Abstract

The application provides a method and a device of initial accessing of a wireless terminal. The method includes: marking a user request as an emergency service request in a radio resource control (RRC) layer according to an emergency service attribute of the user request; marking the user request as the emergency service request in a message sent to a middle layer; and notifying a physical layer of initiating an emergency initial accessing request. Emergency service requests and regular service requests are distinguished at a bottom layer, a case where emergency initial communication establishment is repeatedly delayed due to that PRACH initial power is too low is avoided, efficiency of communication establishment is improved, time delay of communication establishment is reduced, and a one-time success rate of initial accessing is increased. For a terminal of emergency communication demand, better timing and higher initial power can be obtained in a random accessing process. Invalid power loss caused by initiating PRACH power climbing for multiple times is avoided, battery endurance capacity of the terminal can be improved, economy is good, feasibility is high, and markets are broad.

Description

technical field [0001] The present invention relates to the technical field of the Internet of Things, in particular to a method and device for initial access of a wireless terminal. Background technique [0002] From the perspective of 5G demand, there are three main directions: eMBB (Enhance Mobile Broadband, Enhanced Mobile Broadband) for ultra-large throughput, mainly for 5G mobile phone user terminals; uRLLC (Ultra-reliable and low latency communications, low-latency high-reliability communications), mainly for 5G emergency services or public safety, Internet of Vehicles and autonomous driving, Industry 4.0, etc. [0003] In the direction of ultra-low latency and high reliability, uRLLC needs extremely reliable and extremely low-latency communication methods. At present, it is necessary to consider how to improve the efficiency of communication establishment and reduce the time delay of communication establishment. [0004] In the current initial access of wireless com...

AI Technical Summary

Problems solved by technology

[0007] In the current technology, emergency requests can only be reflected in RRC / NAS (Radio Resource Control, Radio Resource Control / Network Attached Storage, Network Attached Storage) messages, but the initial random access process that triggers the emergency establishment of RRC / NAS connections, MAC It is indistinguishable from the physical layer whether it is an emergency access request, resulting in the same probability and delay of preempting resources at the bottom layer even for emergency services and regular services

[0008] When an emergency communication is established between the terminal and the network, only the NAS and RRC layers can expedite express delivery. After reaching the RLC (RadioLink Control, radio link layer control protocol) and its physical layer, it is processed in the same way as conventional communication requests. , cannot distinguish

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