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Method for realizing NB-IoT multicast coverage enhancement

A coverage enhancement and coverage level technology, applied in the field of NB-IoT multicast coverage enhancement, can solve the problem that NB-IoT devices do not support mobility management, etc., and achieve the effect of reasonably enhancing coverage and optimizing PDSCH resources

Inactive Publication Date: 2018-05-04
BEIJING XINWEI TELECOM TECH
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AI Technical Summary

Problems solved by technology

Third, NB-IoT devices do not support mobility management in the connected state

Method used

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  • Method for realizing NB-IoT multicast coverage enhancement
  • Method for realizing NB-IoT multicast coverage enhancement

Examples

Experimental program
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Effect test

Embodiment

[0052] Step 1. The NB-IoT cell broadcast RSRP threshold is limited to the CE level correspondence or the correspondence between RSRP and the expected number of repetitions.

[0053] Step 2. The NB-IoT UE measures the CRS of the cell to obtain the RSRP, and compares it with the configuration information in the broadcast to determine the CElevel or the expected number of repetitions;

[0054] Step 3. During the ATTACH process or TAU process, the UE sends information such as the mobility level information of the UE, the service information of interest, the CE level or the expected number of repetitions, the E-CGI of the cell where it is currently, and the time period T to the MME.

[0055] in:

[0056] (1) The mobility level information of the UE is only for the UE being a stationary terminal, or the UE being a micro-mobile terminal, or the UE being a fast-moving terminal. How to judge a micro-mobile terminal or a fast-moving terminal can be obtained through broadcast informati...

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Abstract

The invention provides a method for realizing NB-IoT multicast coverage enhancement. The method comprises the following steps: receiving multicast auxiliary information reported by all user equipmentUE through a mobility management entity MME; determining the worst coverage level according to the multicast auxiliary information reported by all UE; and determining the multicast coverage enhancement configuration for the service according to the worst coverage level, and issuing the multicast coverage enhancement configuration to an evolution node B, wherein the evolution node B receives the NB-IoT multicast coverage enhancement configuration issued by a network side; and transmitting data for the service according to the multicast coverage enhancement configuration.

Description

technical field [0001] The present invention relates to a mobile communication system, in particular to a method for realizing NB-IoT multicast coverage enhancement. Background technique [0002] IoT (Internet of Thing, Internet of Things) is the next revolution in the mobile communication ecosystem. NB-IoT is a new narrowband cellular communication technology proposed by the 3GPP standardization organization in September 2015. The 3GPP NB-IoT work item will generally define a new cellular IoT wireless access technology that is not backward compatible with E-UTRAN and has major changes to solve indoor coverage enhancement, massive low-speed device access, and low-time delay sensitivity, low equipment cost, low power consumption, and network architecture optimization. First of all, NB-IoT has the characteristics of flexible deployment, narrow bandwidth, low speed, low cost, and high capacity. Second, NB-IoT has the characteristics of enhanced coverage and low latency sensi...

Claims

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Application Information

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IPC IPC(8): H04W4/06H04W8/16H04W16/18H04W16/26
CPCH04W4/06H04W8/16H04W16/18H04W16/26
Inventor 王淑坤许瑞锋
Owner BEIJING XINWEI TELECOM TECH
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