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Information retransmission method and base station

A technology of base station and retransmission times, which is applied in the field of narrowband Internet of Things, can solve the problems of low success rate, large difference in signal quality, UE cannot correctly analyze downlink information, etc., and achieve the effect of improving the success rate and the probability of downlink information

Active Publication Date: 2018-02-16
CHINA UNITED NETWORK COMM GRP CO LTD
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Problems solved by technology

[0004] However, the distance between UEs at different locations in the same CEL area and the base station is different, which may lead to a large difference in the signal quality received by UEs at different locations
When the UE is located far away from the base station in the CEL area, the UE may not be able to correctly parse the downlink information due to the small number of repeated downlink information transmissions, so the UE cannot access NB-IoT based on the resolved downlink information , resulting in a low success rate of accessing NB-IoT for UEs located far away from the base station in the CEL area

Method used

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  • Information retransmission method and base station
  • Information retransmission method and base station

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[0026] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0027] The embodiment of this application is applicable to a cellular-based narrowband Internet of Things NB-IoT, such as figure 1 As shown, among them, the cellular-based narrowband Internet of Things NB-IoT usually includes a base station, a core network, an IoT platform, and an application server, where the base station is used for uplink and downlink information transmission between NB-IoT and UE, and the core network is used to complete Policy control such as authentication and billing...

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Abstract

The invention discloses an information retransmission method and a base station, relates to the technical field of a honeycomb based NB-IoT (Narrow Band Internet of Things) and can increase the success rate of UE relatively far away from the base station to access the NB-IoT in a same coverage enhancement level area. The information retransmission method comprises the steps that the base station receives signal quality reported by the UE, so that the base station determines the number of replications of transmitting downlink information to the UE based the signal quality reported by the UE, and the number of replications of transmitting the downlink information to the UE by the base station is in negative correlation with the signal quality reported by the UE; and the base station transmits the downlink information to the UE based on the determined number of replications. The scheme provided by the invention is suitable for the process in which the base station transmits the downlink information to the UE repeatedly.

Description

technical field [0001] The present application relates to the technical field of narrowband Internet of Things, and in particular to an information retransmission method and a base station. Background technique [0002] In the existing cellular-based Narrow Band Internet of Things (NB-IoT), the location of the base station is usually used as a reference, and according to the value of the signal power received at different locations within the coverage area of ​​the base station, the The entire coverage area is divided into several coverage enhanced level (Coverage Enhanced Level, CEL) areas from the inside to the outside, and a CEL threshold is defined for each CEL area. [0003] In order to improve the reliability of user equipment (User Equipment, UE) receiving downlink information in a CEL area far from the base station, the base station needs to repeatedly send the same downlink information to all UEs in the CEL area. Wherein, the number of repeated transmissions of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W48/08H04W48/16H04W36/00
CPCH04W36/0044H04W48/08H04W48/16
Inventor 张力方胡泽妍程奥林邢宇龙赵元胡云
Owner CHINA UNITED NETWORK COMM GRP CO LTD
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