Internet of things physical signal setting method and device and computer readable storage medium

A technology of physical signals and the Internet of Things, applied in the field of communication, can solve the problems of time offset of uplink traffic channel estimation and inability to feed back the uplink timing advance in real time, so as to improve the ability to resist multipath fading and suppress co-channel interference.

Active Publication Date: 2018-12-25
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a physical signal setting method, device and computer-readable storage medium of the Internet of Things, which overcomes the problem that the uplink Single-tone signal of the user terminal is transmitted through the sub-carrier of the set frequency in the prior art. The NB-IoT base station cannot estimate the time offset of the uplink traffic channel, so the NB-IoT base station cannot feed back the uplink timing advance to the user terminal in real time, causing the user terminal to re-initiate the defect of random access

Method used

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  • Internet of things physical signal setting method and device and computer readable storage medium
  • Internet of things physical signal setting method and device and computer readable storage medium
  • Internet of things physical signal setting method and device and computer readable storage medium

Examples

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no. 1 example

[0034] In the first embodiment of the present invention, a method for setting physical signals of the Internet of Things, such as figure 1 shown, including the following specific steps:

[0035] Step S101, setting each RU in the single-tone signal to a set number of transmission durations.

[0036] Wherein, the transmission duration is an integer multiple of the subframe duration of the single-tone signal.

[0037] For example: the single-tone signal includes 3 RUs, and the duration of each RU is 8ms;

[0038] Set each RU in the single-tone signal to 2 transmission durations;

[0039] Wherein, the transmission duration is twice 4ms of the subframe duration of the single-tone signal 2ms.

[0040] Step S102, according to the scheduling situation of all subcarriers in NB-IoT, within the range of subcarriers for transmitting single-tone signals, the frequency interval range of subcarriers for transmitting single-tone signals within the preset RU adjacent transmission duration i...

no. 2 example

[0057] In the second embodiment of the present invention, a method for setting physical signals of the Internet of Things, such as figure 2 shown, including the following specific steps:

[0058] Step S201, setting each RU in the single-tone signal to a set number of transmission durations.

[0059] Wherein, the transmission duration is an integer multiple of the subframe duration of the single-tone signal.

[0060] The number of transmission durations in each RU is 2, 4 or 8.

[0061] For example: the single-tone signal includes 3 RUs, and the duration of each RU is 8ms;

[0062] Set each RU in the single-tone signal to 2 transmission durations;

[0063] Wherein, the transmission duration is twice 4ms of the subframe duration of the single-tone signal 2ms.

[0064] Step S202: Determine the range of subcarriers for transmitting single-tone signals according to the minimum frequency interval between subcarriers for transmitting single-tone signals.

[0065] Wherein, the s...

no. 3 example

[0085] The third embodiment of the present invention, this embodiment is based on the above embodiments, taking the method for setting the frequency hopping of the single-tone signal of the Internet of Things with a minimum frequency interval of 15kHz as an example, combined with the attached image 3 An application example of the present invention is introduced.

[0086] The uplink single-tone signal in NB-IoT occupies 3 RUs, and the duration of each RU is 8ms.

[0087] In step S301, the transmission duration of frequency hopping in each RU is set to 4 ms, and the number of frequency hopping in each RU is set to N=2.

[0088] Step S302, setting the subcarrier index of frequency hopping on each RU as

[0089] is the subcarrier index of the kth subframe in each RU. k=0,1,...,K-1, K=8 is the number of subframes occupied by each RU.

[0090] Through a limited number of experiments, or a limited number of simulations, the range of subcarrier frequency intervals for transmit...

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Abstract

The invention provides an Internet of things physical signal setting method and device and a computer readable storage medium. The method includes the following steps: setting each RU in a signal-tonesignal as a set number of transmission durations; and determining a subcarrier frequency for transmitting the single-tone signal within each transmission duration in the EU by taking a preset range of a subcarrier frequency internal of the single-tone signal transmitted with the adjacent transmission durations in the RU within a range of the subcarrier transmitting the single-tone signal according to scheduling of the subcarriers in a NB-IoT. The Internet of things physical signal setting method and device can transmit the single-tone signal by frequency hopping, and so a NB-IoT base stationcan estimate time offset of an uplink service channel, the NB-IoT base station can be ensured to feed back uplink timing advance to user equipment in real time, the user equipment can be effectively ensured to continuously transmit data in a mobile scene, and the user equipment can be effectively prevented from initiating a novel round of random access. The single-tone signal transmitting by the frequency hopping effectively improves the ability of anti-multipath fading of uplink signal-tone signal transmission and suppresses co-frequency interference.

Description

technical field [0001] The present invention relates to the field of communication technology, and in particular to a method, device and computer-readable storage medium for setting physical signals of the Internet of Things. Background technique [0002] The cellular-based narrowband Internet of Things (NB-IoT, Narrow Band Internet of Things) is an important branch of the Internet of Everything and one of the main application scenarios of 5G (5th-Generation, 5th generation) communication. NB-IoT is specifically applied in application scenarios including smart meter reading, ecological agriculture, smart parking and shared bicycles. With the continuous expansion of NB-IoT application fields, customers also put forward higher requirements, hoping that NB-IoT can support mobile scenarios. However, the existing NB-IoT has poor support for mobility, especially when the uplink Single-tone (single subcarrier) is transmitted, there is only one subcarrier in the frequency domain, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04W56/00H04W74/08
CPCH04L5/0048H04L5/0053H04W56/0055H04W74/0833
Inventor 徐晓景
Owner ZTE CORP
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