A method and device for semi-persistent scheduling of voice service uplink resources for 3G/4G mobile communication networks

Abstract

A method and device for semi-persistent scheduling of voice service uplink resources for 3G / 4G mobile communication networks. The steps of the method are: S1: judging the channel quality of user equipment; S2: judging whether idle PRBs meet the requirements, and allocating the required PRB; if the number of users in the system does not reach the maximum user capacity of the voice service of the system, allocate resources to them by reducing the voice coding rate of existing users in the system; calculate the voice coding rate of each user after adding new user equipment, and The adjusted speech coding rate is sent to each user equipment; otherwise, the call of user equipment k is blocked; S3: the detection of the uplink channel quality during the call; during the call of user equipment k, the quality of the uplink channel is monitored in real time, if it is low, Then the call of user equipment k is interrupted. The device is used to carry out the method described above. The invention has the advantages of improving the resource utilization rate of the system, improving user satisfaction and user capacity, and the like.

Description

technical field [0001] The present invention mainly relates to the field of mobile communication, in particular to a semi-persistent scheduling method and device for voice service uplink resources facing 3G / 4G mobile communication networks. Background technique [0002] The 3rd Generation Partnership Project (3GPP) started the Long Term Evolution (LTE) project in 2005. Compared with the third-generation mobile communication system, the biggest feature of LTE is the pure packet-switching network, which cancels the circuit domain in the third-generation mobile communication system, and the services of the original circuit domain are carried by the packet domain of LTE instead. [0003] According to different service types, resource scheduling in LTE mainly includes two scheduling algorithms, dynamic scheduling and semi-persistent scheduling. [0004] (1) Dynamic scheduling. [0005] In LTE, for services with low real-time requirements, a dynamic scheduling method is usually ...

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Problems solved by technology

[0010] 1. Compared with dynamic scheduling, semi-persistent scheduling can make good use of the characteristics of voice services and improve the utilization of system wireless resources. However, in the current semi-persistent scheduling scheme, as long as the system has enough idle resources, it will accept call requests, allocate resources for them, and do not restrict users with poor channel quality during the user's call

This scheduling method will cause users with poor channel quality or users whose channel quality deteriorates during a call, especially users whose channel quality cannot meet the quality of service requirements of voice services to occupy too many wireless resources, thereby reducing the user satisfaction of the system and user capacity

[0011] 2. Although the variable-rate speech coding technology allows users to make full use of the system's wireless resources under different channel conditions, the speech coding rate of the UE is only adjusted according to the user's current channel quality, without consideration from the perspective of the entire system

When the system is in peak hours, users with better channel quality in the system still occupy more resources with a higher speech coding rate, but the newly initiated calls are blocked because there are not enough resources in the system, thus increasing the The call blocking rate of the system limits the user capacity of the system

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