A resource allocation method and device based on cbtc service

Abstract

The present application provides a resource allocation method based on CBTC service, the method includes: a base station determines an uplink scheduling priority value for each user terminal; wherein, the uplink scheduling priority value Pri for the user terminal U is U are: eff_SINR(U) is the uplink spectral efficiency of the user terminal U, UserRate(U) is the uplink average rate of the user terminal U, α is the scheduling request SR factor, β is the delay factor, and γ is the link control protocol LCP factor; When allocating resources for each user terminal, resources are preferentially allocated to the user terminal with a higher uplink scheduling priority; wherein, a larger uplink scheduling priority value corresponds to a higher uplink scheduling priority. This method can improve the reliability of CBTC services and take into account the fairness of other services.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a method and device for resource allocation of a wireless communication-based automatic train control system (Communication Based Train Control System, CBTC) service. Background technique [0002] Long Term Evolution (LTE) wireless communication technology is gradually applied to urban rail transit, such as subway, light rail, etc. There are various types of services under this network, such as CBTC, voice, video and ordinary PS data services, CBTC services Deployed on QoS Class Identifier (QCI) 1 bearer, voice service deployed on QCI1 bearer, video service deployed on QCI4 bearer, common PS data deployed on QCI9 bearer, base stations are differentiated according to the characteristics and requirements of different services Processing, such as priority management, preferentially allocates physical layer downlink control channel (Physical Downlink Control Channel, PD...

AI Technical Summary

Problems solved by technology

[0003] The CBTC service belongs to the rail transit unmanned train control signaling, which is mainly used to control the train running. This service has high requirements for indicators such as packet loss and delay. , there are small bandwidth scenarios or air interface congestion scenarios, and there are multiple services such as CBTC and voice in the subway network. When different services are concurrent, the base station controls the order in which air interface resources are allocated to different services through scheduling priorities. The higher priority services are assigned to air interfaces first. resources, and the reliability of the corresponding business is higher, how to improve the reliability of CBTC by calculating the uplink scheduling priority in small bandwidth capacity limited or integrated business scenarios, while taking into account the fairness of other services is an urgent problem to be solved

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