A method for knowing that a terminal is offline, a terminal, and a base station

Abstract

The invention provides a terminal offline monitoring method, comprising that: the terminal sends a scheduling request SR to the base station in interaction process of the terminal and the base station; if the times of the terminal continuously sending the SR to the base station is N, the terminal does not receive the SR response authorization sent by the base station, it is confirmed that the terminal is disconnected with the base station; the SR response authorization is the response information sent to the terminal by the base station after the base station receives the SR sent by the terminal for M times; M is less than N. The invention can relatively quickly know self offline condition, simultaneously avoids terminal offline misjudgment resulted from scheduling delay, and improves terminal offline monitoring reliability and timeliness.

Description

technical field [0001] The present invention relates to the field of communication technology, and in particular to a method for knowing that a terminal is offline, a terminal, and a base station. Background technique [0002] There are many problems in the communication system between the state consistency of the base station and the terminal. In a general communication system, the state of a terminal is divided into a connected state and a non-connected state. If the terminal accesses the base station network and can monitor the scheduling authorization of the base station, it is in an online state, which is called a connected state. Otherwise, the terminal goes offline and is in a disconnected state. The terminal in the non-connected state must re-connect to the base station network, so that the base station can normally perform resource scheduling and data transmission on it. [0003] There are many reasons for the terminal to go offline. For example, the terminal det...

AI Technical Summary

Problems solved by technology

[0007] However, in actual situations, if there are a large number of terminals in the network, the terminals are likely to have a large scheduling delay due to limited system resources.

In order to avoid scheduling delays and misjudgment that the SR report does not receive a response, the terminal is offline. Therefore, the maximum number of scheduling request SR reports is generally set to be longer. This will cause the terminal to find itself offline for a long time, and may be in the base station for a long time. Inconsistent state with terminal

Moreover, simply increasing the maximum number of scheduling request SR reports cannot fundamentally solve the problem of misjudgment of terminal disconnection, because it is difficult to estimate the maximum scheduling delay in the system

[0008] From the above description, it can be seen that it is necessary to provide a method for knowing that the terminal is offline, so that the terminal can quickly learn about its own offline situation without receiving a connection release command from the base station, and at the same time it can avoid delays due to scheduling. Misjudgment of terminal disconnection caused by

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