Narrowband Internet of Things terminal D2D communication method and device based on carrier sensing
A narrow-band Internet of Things and carrier sense technology, which is applied in the field of communication, can solve problems such as increased transmission delay, increased base station load, and increased base station burden, achieving the effects of reducing interference, lightening burden, and ensuring quality
Pending Publication Date: 2022-04-19
ZHENGZHOU UNIV
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Problems solved by technology
[0003] However, with the large-scale commercial use of NB-IoT technology, the rapid growth of business will lead to a significant increase in base station load, a sharp shortage of spectrum resources, and a significant increase in transmission delay.
[0004] In order to solve the above problems, at present, D2D communication technology will be integrated into NB-IoT technology. However, base stations are still required to coordinate D2D communication, which will increase the burden on base stations and reduce the quality of D2D communication for terminals.
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[0064] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0065] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0066] refer to figure 1 , which is a schematic flowchart of a carrier-sensing-based narrowband IoT terminal D2D communication method provided in Embodiment 1 of the present application. The method may include but is not limited to the ...
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The invention provides a narrowband Internet of Things terminal D2D communication method and device based on carrier sensing, in the method, if two terminals in a narrowband Internet of Things need to carry out D2D communication, a first terminal selects a resource capable of carrying out D2D communication, and when the first terminal monitors that an anchor carrier is idle, the first terminal carries out D2D communication on the anchor carrier; according to the embodiment of the invention, the first terminal requests the second terminal to carry out D2D communication through the anchor carrier, and when the reply information of the second terminal is received, the service data is transmitted to the second terminal through the service transmission carrier, so that the D2D communication between the first terminal and the second terminal without depending on a base station is realized, the burden of the base station is reduced, and the D2D communication quality of the terminals in the narrowband Internet of Things is ensured.
Description
technical field [0001] The present application relates to the field of communication technology, in particular to a method and device for D2D communication of a narrowband Internet of Things terminal based on carrier sensing. Background technique [0002] NB-IoT (Narrow Band Internet of Things, Narrow Band Internet of Things) technology focuses on the low-power wide-coverage Internet of Things market. It has the characteristics of wide coverage, multiple connections, low cost, low power consumption, and excellent architecture. It is currently used in smart homes, industrial Various vertical fields such as the Internet of Things, agriculture and environment, and public safety have been commercialized on a large scale. [0003] However, with the large-scale commercial use of NB-IoT technology, the rapid growth of business will lead to a significant increase in base station load, a sharp shortage of spectrum resources, and a significant increase in transmission delay. [0004]...
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Login to View More IPC IPC(8): H04W4/70H04W74/08
CPCH04W4/70H04W74/0808
Inventor 张大龙韩刚涛徐芳王晓彩李奕彤姬祥
Owner ZHENGZHOU UNIV