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Method for triggering coverage level change report

A coverage and level technology, applied in the field of level change reporting, can solve problems such as inaccurate trigger mechanism, wrong coverage level, inaccuracy, etc.

Active Publication Date: 2016-06-29
ALCATEL LUCENT SAS +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, in 3GPP, it has been considered that the RSRP at a lower SNR is very inaccurate (±9dB) (and the RSRP at a lower SNR just corresponds to the application scenario of CE-MTCUE (coverage enhancement-MTCUE, coverage enhancement-MTCUE) ), so the existing triggering mechanism is quite inaccurate, as this will cause the UE to be determined to enter the wrong coverage level

Method used

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  • Method for triggering coverage level change report
  • Method for triggering coverage level change report
  • Method for triggering coverage level change report

Examples

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Embodiment Construction

[0020] In the present invention, the event trigger mechanism can be defined by a threshold and the number of times the threshold is exceeded, wherein the threshold is the number of retransmissions. For example:

[0021] - For UEs moving from a higher coverage class (which requires a higher number of repeated transmissions) to a lower coverage class (which requires a lower number of repeated transmissions), a threshold T is used H2L . Here, if the UE can use less than or equal to T H2L The number of retransmissions K H2L If the channel is successfully decoded for the first time in a row, the UE will trigger an event to report to the base station that it entered a lower coverage level.

[0022] - For UEs moving from a lower coverage class (which requires a lower number of repeated transmissions) to a higher coverage class (which requires a higher number of repeated transmissions), a threshold T is used L2H . Here, if the UE can H2L The number of retransmissions K L2H If t...

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Abstract

The present invention provides a method for triggering a coverage level change report in a user equipment of a communication system based on machine type communication, the cell where the user equipment is located has multiple coverage areas, and the multiple coverage areas The area includes at least one coverage enhancement area and a normal coverage area, and the method includes: a. Determining whether the coverage area where the user equipment is located is based on the number of retransmissions and the predetermined number of times required for the user equipment to decode the channel changes, wherein the predetermined number of times is the number of times the user equipment continuously decodes the channel with the required number of retransmissions; and b. when the coverage area where the user equipment is located changes, trigger And send a coverage area change report to the base station.

Description

technical field [0001] The present invention relates to a method and device for triggering a coverage level change report in a user equipment of a communication system based on machine type communication, and a method for configuring user equipment in a base station of a communication system based on machine type communication Methods for coverage classes. Background technique [0002] A machine type communication (Machine Type Communication, MTC) user equipment (UE) is a user equipment used by a machine for a specific application. An example of one such MTCUE is a smart meter. These smart meters can be located in the basement, which will suffer from high penetration loss and thus create difficulties for the MTC UEs to communicate with the network and / or base stations. Therefore, in Rel-12, 3GPP approved a work item for low-cost MTC UE and coverage enhancement. The coverage enhancement aims to improve the coverage of MTCUE by 15dB, and this work item is continuing in Rel-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/00
Inventor 黄晟锋林晓翔陈宇
Owner ALCATEL LUCENT SAS
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