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Information transmission method and apparatus

A transmission method and technology of location information, applied in the field of communications

Active Publication Date: 2017-07-18
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention provides an information transmission method and device to at least solve the problem of how to determine the narrowband of the transmission channel in the LTE system bandwidth in the related art

Method used

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  • Information transmission method and apparatus
  • Information transmission method and apparatus

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Experimental program
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Embodiment 1

[0154] This preferred embodiment provides a method for determining frequency offset and transmitting channel / information. This preferred embodiment is described by taking the NB-IoT system as an example. In practical applications, it is not limited to the application in the NB-IoT system, and can also be used in other systems.

[0155] In the related art, the UE needs to perform frequency sweep (channel raster) at integer multiples of 100 KHz to receive the synchronization channel. In the LTE system, the subcarrier width is 15KHz, so the frequency of the DC subcarrier in the LTE system is a common multiple of 15KHz and 100KHz, that is, 300KHz.

[0156] In the NB-IoT system, the frequency of the central subcarrier of the synchronization channel PSS / SSS is an integer multiple of 300KHz. For example, when the system bandwidth is 20MHz, the central subcarrier of PSS / SSS is PRB#8 and subcarrier #4 satisfies an integral multiple of 300KHz, where the PRB index is the PRB index in th...

Embodiment 2

[0168] This preferred embodiment provides a method for determining frequency offset and transmitting channel / information. This preferred embodiment is described by taking the NB-IoT system as an example. In practical applications, it is not limited to the application in the NB-IoT system, and can also be used in other systems.

[0169] Similar to preferred embodiment 1, the difference is:

[0170] PSS / SSS, PBCH, and SIB1 are all sent on the same narrowband, and the eNB notifies the downlink in SIB1 of other channels / information except PSS / SSS, PBCH, and SIB, or at least one of other channels / information The transmission narrowband and PSS / SSS , the offset between the transmission narrowbands of PBCH and SIB1. The UE receives the frequency offset information in SIB1, and receives the downlink signal on the corresponding narrowband. Or the offset is preset, and the UE receives downlink signals on a corresponding narrowband according to the frequency offset.

[0171] Or, PSS / S...

Embodiment 3

[0174] This preferred embodiment provides a method for determining frequency offset and transmitting channel / information. This preferred embodiment is described by taking the NB-IoT system as an example. In practical applications, it is not limited to the application in the NB-IoT system, and can also be used in other systems.

[0175] The downlink narrowband of NB-IoT is a complete PRB of the LTE system, and all downlink channels or at least one of the downlink channels are sent on the PRB. However, in the LTE system, the center frequency points of all PRBs are not integer multiples of 100KHz, and the UE will perform frequency scanning according to the integer multiples of 100KHz, so that there will be a certain frequency offset when the UE receives. For example, for a system bandwidth of 10MHz, when PSS / SSS is sent on PRB#4, there will be a frequency offset of 2.5KHz from an integer multiple of 100KHz.

[0176] In this preferred embodiment, eNB notifies the frequency offset...

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Abstract

The invention provides an information transmission method and apparatus. The information transmission method includes the steps: network equipment determines the frequency deviation information or frequency domain positional information, determines a narrowband for transmitting the transmission information according to the frequency deviation information or frequency domain positional information, and transmits the information on the narrowband. The technical scheme of the information transmission method and apparatus can solve the problem that how to determine the narrowband of a transmission channel on LTE system bandwidth, and can determine the narrowband of the transmission channel.

Description

technical field [0001] The present invention relates to the communication field, in particular, to an information transmission method and device. Background technique [0002] Machine Type Communication (MTC for short) User Equipment (UE for short), also known as Machine to Machine (M2M for short) user communication equipment, is currently the main application form of the Internet of Things. In the 3rd Generation Partnership Project (3rd Generation Partnership Project, referred to as 3GPP) technical report TR45.820V200, several technologies applicable to cellular Internet of Things (Comb-Internet Of Things, referred to as C-IOT) are disclosed, wherein, The narrowband long-term evolution (NarrowBand-Internet of Things, referred to as NB-IoT) technology is the most eye-catching. The system bandwidth of the system is 200kHz, which is the same as the channel bandwidth of the Global system for Mobile Communication (GSM) GSM system. Great convenience. NB-IoT has three working s...

Claims

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Application Information

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IPC IPC(8): H04W72/04
CPCH04W72/0453H04W72/20H04W72/04
Inventor 张雯夏树强戴博石靖刘锟陈宪明方惠英袁弋非
Owner ZTE CORP
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