A method for implementing routing optimization of Internet of Things devices using d2d mechanism
An IoT device and D2D technology, applied in the field of wireless communication, can solve the problems of signaling overhead, unfavorable spectrum utilization, difficulty in obtaining relevant status information of D2D communication links, etc., so as to avoid mutual blindness and improve transmission efficiency.
Active Publication Date: 2020-04-03
CHINA INTERNET NETWORK INFORMATION CENTER
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Problems solved by technology
The disadvantage of this solution is that it is difficult for the base station to obtain relevant status information of a large number of D2D communication links, especially when the number of D2D communication links is large, it will cause a large amount of signaling overhead, which is not conducive to the improvement of spectrum utilization, and the flexibility of D2D communication cannot be better represented
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[0048] In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail in conjunction with the accompanying drawings.
[0049] The present invention provides a method for implementing routing optimization of Internet of Things devices by using the D2D mechanism, and its scene schematic diagram and flowchart are respectively as follows figure 2 and image 3 As shown, the steps include:
[0050] 1) The base station (central node) determines the list of D2D terminals within the coverage area according to the terminal capabilities (such as figure 2 D2D terminals A, B, C, D, E, and F) in the list, and send an instruction message to each D2D terminal within its coverage according to the list, indicating the frequency information used by each D2D terminal for direct communication, and triggering each D2D The terminal enables the D2D function and notifies other D2D terminals in th...
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The invention provides a method for realizing routing optimization of Internet of things equipment by adopting a D2D mechanism. The method comprises the following steps: a base station determines a list of D2D terminals in the coverage area based on terminal capabilities, and issues indicating information to each D2D terminal in the list; each D2D terminal in the list broadcasts the own configuration information and negotiates the configuration information to obtain information of frequency bands at which two parties are interconnected; when a sender D2D terminal finds that the own signal strength is less than a pre-configured threshold, the D2D terminal with the highest received SINR is selected from a negotiation set as a relay terminal, and a bandwidth negotiation request is sent to the relay terminal; and then the relay terminal sends a new bearer establishment request to the base station; and when the bearer establishment is successful, the relay terminal sends a negotiation success indicating message to the sender D2D terminal, and the sender D2D terminal establishes an IP connection with the relay terminal for communication according to the own IP version information and the information of the frequency bands at which the two parties are interconnected.
Description
technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method for implementing routing optimization of Internet of Things devices by using a D2D mechanism. Background technique [0002] The next-generation broadband cellular mobile communication system (IMT-Advanced) uses carrier aggregation (CA) technology, enhanced multiple-input multiple-output (MIMO) antenna technology, coordinated multi-point transmission (CoMP) technology and relay technology. Based on the mobile communication system, the system capacity is further improved, and the data rate and user experience of cell edge users are improved. [0003] However, due to the limitations of the base station (BS)-centered cell coverage and service provision mode of the IMT-Advanced system, the IMT-Advanced system still has problems in coverage and capacity. Although relay technology and CoMP technology can improve cell coverage performance and enhance cell...
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IPC IPC(8): H04W36/30H04W40/22H04W48/10H04W48/16H04W76/14
CPCH04W36/30H04W40/22H04W48/10H04W48/16Y02D30/70
Inventor 傅瑜耿光刚延志伟
Owner CHINA INTERNET NETWORK INFORMATION CENTER