A Handover Judgment Method in LTE Communication System

Abstract

The embodiment of the invention discloses a handover judging method in an LTE (long time evolution) communication system. The method comprises the following steps that: in a measurement report reported by UE (user equipment), when the RSRP (reference signal received power) of a cell is at the preset range, and when the RSRP of a neighbor cell is better than that of a cell, and if the UE has real-time services in progress, an indicating massage for indicating that a target base station is required to inform whether non-competitive random access resources are contained or not are added into a handover request massage sent by the target base station; and if a response massage fed back by the target base station indicates that the target base station does not contain non-competitive access resources, the handover process is ended when the real-time services performed by the UE are acknowledged to be at the activated time. The method can reduce the influences to the real-time service of users by the handover process.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a handover judgment method in a long-term evolution (LTE) communication system. Background technique [0002] In the LTE system, the purpose of the radio resource management of the air interface is to provide some mechanisms to ensure the effective use of the air interface and achieve optimal resource utilization, so as to meet the requirements related to radio resources defined by the system. Among them, the mobility management realizes that the LTE system supports mobility in the cellular network, and is divided into mobility management in an idle (LTE IDLE) state and mobility management in an active (LTE ACTIVE) state. [0003] Mobility management in LTE ACTIVE state is represented as handover. The specific switching process includes the following steps: [0004] 1. The user terminal UE sends a measurement report (Measurement Report, MR) to the source base sta...

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Problems solved by technology

[0011] The switching process will cause the transmission of user data to be suspended. This suspension time is called the interruption time, which is a very important index to measure the quality of the handover algorithm. Especially for services with high real-time requirements, if the interruption time is too long, it will not be able to meet the requirements of the business. QoS requirements directly affect user experience during switching

[0012] In the existing switching process that needs to use competing resources, the average interruption time is about 30ms, which is acceptable for non-real-time services, but for real-time services, such as VOIP services, the arrival interval of new data packets is 20ms, if the existing switching process is used, it may cause problems such as packet loss, and the user will feel that the sound is intermittent

[0013] It can be seen that the handover judgment method of the existing LTE communication system cannot meet the QoS requirements of real-time services, which affects the user experience during the handover process

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