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A signal processing method and device

A signal processing device and signal processing technology, applied in the communication field, can solve the problem that the NB-IoT system cannot achieve low power consumption and low cost

Active Publication Date: 2021-11-19
CHENGDU HUAWEI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present application provides a signal processing method and device to solve the problem that the signal detection in the NB-IoT system cannot meet the requirements of low power consumption and low cost

Method used

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  • A signal processing method and device

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Embodiment Construction

[0055] Embodiments of the present application provide a signal processing method and device to solve the problem that the current NB-IoT system cannot meet the requirements of low power consumption and low cost in terms of signal detection. Wherein, the method and the device are based on the same idea, and since the principles of the method and the device to solve problems are similar, the implementation of the device and the method can be referred to each other, and the repetition will not be repeated.

[0056] In the description of the embodiments of the present application, "and / or" describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and / or B, which may mean: A exists alone, A and B exist simultaneously, and There are three cases of B. The character " / " generally indicates that the contextual objects are an "or" relationship. The at least one involved in this application refers to one or mo...

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Abstract

A signal processing method and device are used to realize low power consumption and low cost in the signal detection process. The method is as follows: the first device generates an envelope signal, wherein the process of generating the envelope signal includes any one or any combination of the following: performing head and tail zero padding on the encoded information; using pi / 2-binary start Closed keying OOK modulation; For each OFDM symbol in the upsampling time domain signal, the number of upsampling samples corresponding to half a Pi / 2-OOK modulation symbol is cyclically shifted to the right, wherein the upsampling The time domain signal includes one or more OFDM symbols; or adding a zero cyclic prefix to each OFDM symbol; the first device sends the envelope signal to the second device.

Description

technical field [0001] The embodiments of the present application relate to the field of communication technologies, and in particular, to a signal processing method and device. Background technique [0002] Terminals in the narrowband internet of things (NB-IoT) generally use a 5 watt-hour (Wh) battery, and can only send data at a very low frequency, so it is possible to replace the battery infrequently. Moreover, the NB-IoT module is relatively large in size, uses more batteries, and costs more. [0003] In order to save the power consumption of the NB-IoT terminal battery, NB-IoT introduces a power saving mode (PSM). The PSM mode means that the terminal performs deep sleep during non-business periods and does not receive downlink data. The NB-IoT network device caches the downlink data that needs to be sent to the terminal. When the terminal actively sends uplink data, the NB-IoT network device will send the cached downlink data to the terminal, and the terminal may re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26H04L27/32H04W52/02
CPCH04L27/2607H04L27/2636H04L27/32H04W52/0229H04L27/26H04W52/02Y02D30/70
Inventor 陈庆勇陈磊
Owner CHENGDU HUAWEI TECH
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