Method and device for transmitting uplink response message

Abstract

The invention is to provide a method and device for transmitting an uplink response message. Specifically, the method comprises the following steps: a base station serving a mobile device detects whether the mobile device meets a scheduling triggering condition for carrying out pairing scheduling; when the mobile device meets the scheduling triggering condition and the base station sends a downlink message to the mobile device, the base station determines uplink resource allocation information of the uplink response message corresponding to the downlink message so as to send identification information for carrying out pairing scheduling on the mobile device and the uplink resource allocation information to the mobile device; and the mobile device transmits the uplink response message to the base station according to the identification information and based on the uplink resource allocation information. Compared with the prior art, the method and device allow the base station to be able to allocate uplink and downlink resources in the same resource allocation information through sending the identification information for carrying out pairing scheduling and the uplink resource allocation information of the uplink response message corresponding to the downlink message to the mobile device meeting the pairing scheduling, so that signaling overhead is reduced, and coverage of the mobile device is enhanced.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a technology for transmitting an uplink response message. Background technique [0002] A machine type communication (MTC, Machine Type Communication) device is a user equipment (UE, User Equipment) used by a machine for a specific application. An example of the MTC device is a smart meter. Some of these smart meters are located in basements, which suffer from high penetration loss, so it is difficult for MTC devices to communicate with the network. Therefore, in 3GPP, a new project group on low-cost MTC UE and coverage enhancement is approved. The goal of coverage enhancement is to extend the coverage of these MTC UEs by 15dB. We call such UEs Coverage Enhanced Machine Type Communication User Equipment (CE-MTC UE, Coverage Enhanced MTC UE). [0003] In order to achieve a coverage enhancement of 15dB, it is expected to repeat dozens to hundreds of times of PRACH ...

AI Technical Summary

Problems solved by technology

However, this method is not very useful, because the main transmission of the session is about signaling, such as figure 1 Shows the corresponding signaling flow in the process of UE random access to eNB (evolved base station, evolved Node B)

A typical application of an electricity meter is to send only a small number of packets, which makes continuous scheduling of the application difficult

Another possible approach to reduce signaling is persistent scheduling of signaling transfers, but this also does not work well because signaling flows are more complex and sometimes unpredictable than data transfers, and this can sometimes be modeled by a state machine

Therefore, traditional persistent scheduling methods waste resources when there is data transmission

Second, when each signaling needs to be repeated 100 times, the current signaling flow has excessive delay, which means that the UE needs more power to decode and / or transmit more messages, therefore, more power is consumed

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