A kind of narrowband PBCH transmission method and device

A technology of narrowband transmission and transmission method, which is applied in the field of narrowband PBCH transmission method and device, and can solve problems such as not knowing

Active Publication Date: 2020-03-17
DATANG MOBILE COMM EQUIP CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

[0006] When the NB-IOT terminal detects the synchronization signal within the LTE system bandwidth and further receives narrowband PBCH (NB-PBCH), NB-PBCH can theoretically be transmitted in any PRB in the system bandwidth, and the NB-IOT terminal does not know Which PRB in the LTE system bandwidth is the PRB where the PBCH transmission is located, so that the CRS in the LTE system cannot be used for data demodulation

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  • A kind of narrowband PBCH transmission method and device
  • A kind of narrowband PBCH transmission method and device
  • A kind of narrowband PBCH transmission method and device

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Embodiment Construction

[0165] The NB-PBCH (narrowband PBCH) in the NB-IOT system is a periodic transmission, which can theoretically be transmitted in any PRB in the system bandwidth, but the NB-IOT terminal does not know which PRB in the LTE system bandwidth the PRB where the PBCH transmission is located is. , so that the CRS in the LTE system cannot be used for data demodulation.

[0166] In order to solve the above problems, a possible solution is: define a new narrowband RS (NB-RS) for NB-PBCH demodulation, subsequent narrowband downlink data transmission such as narrowband downlink control channel (NB-PDCCH), narrowband downlink The transmission of the shared channel (NB-PDSCH) is based on NB-RS for data demodulation. In the case that the CRS in the LTE system always exists in each downlink subframe, defining a new NB-RS will increase the system RS overhead.

[0167]The embodiment of the present invention provides a narrowband PBCH transmission method without increasing the system RS overhead ...

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Abstract

The invention discloses a narrowband PBCH transmission method and device. In the present invention, the narrowband PBCH is transmitted, and the narrowband PBCH carries at least CRS transmission indication information. More specifically, the CRS transmission instruction information is used to indicate one or more combinations of the number of CRS ports and frequency domain positions in the LTE system. Through the CRS transmission instruction information, the LTE terminal can work simultaneously with the LTE bandwidth The narrowband terminal in the terminal obtains the CRS in the LTE system, so that the narrowband downlink transmission can use the CRS of the LTE system for demodulation, and realizes signal reception based on the CRS.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a narrowband PBCH (Physical Broadcast Channel, physical broadcast channel) transmission method and device. Background technique [0002] Machine-to-machine (M2M, Machine-to-machine) communication is a new type of communication concept, and its purpose is to organically combine various types of communication technologies, so as to promote the development of social production and life style. M2M communication is mostly a small bandwidth system communication service. [0003] The current mobile communication network is designed for communication between people. If you want to use the mobile communication network to support small-bandwidth system communication, you need to optimize the mechanism of the mobile communication system according to the characteristics of small-bandwidth system communication. In the case that the traditional human-to-human communication is n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00
CPCH04L1/0036H04L5/0053H04L5/0092H04W48/12H04L5/005H04L5/0007H04L27/2657H04W48/10H04W72/30H04W4/70H04L1/1861H04W72/0453H04W80/02
Inventor 高雪娟潘学明邢艳萍
Owner DATANG MOBILE COMM EQUIP CO LTD
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