CN112235764A - D2D terminal mode switching method under heterogeneous network hybrid networking - Google Patents
D2D terminal mode switching method under heterogeneous network hybrid networking Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/0085—Hand-off measurements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
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Abstract
According to the D2D terminal mode switching method under the heterogeneous network hybrid networking provided by the invention, the D2D terminal mode switching is triggered according to the shortage of D2D wireless link resources or serious interference, necessary information is exchanged according to the distance between two communication parties detected by D2D communication, the communication mode is selected according to a specific threshold range, the advantages of each network are utilized to the maximum extent, the optimal communication mode of the system is selected for service communication, the user experience is improved, the advantages of the heterogeneous network are utilized to the maximum extent, and the overall performance of the heterogeneous network is comprehensively improved.
Description
Technical Field
The invention belongs to the technical field of communication, and particularly relates to a D2D terminal mode switching method in a heterogeneous network hybrid networking.
Background
Now, 5G D2D (Device-to-Device) terminal direct technology means that a nearby terminal can perform data transmission by direct communication in a short distance without forwarding through a base station. Due to the advantages of short distance and direct connection, the D2D technology can improve the utilization efficiency of wireless resources and expand the network coverage, so a great deal of research is carried out in the construction of 5G, and the D2D technology can be applied to more scenes in the future. The 5G D2D technology will be applied to hybrid networking, under which there are two modes of operation: 1. a legacy cellular communication mode; direct mode between D2D terminals. In a hybrid networking network, a terminal inevitably has a problem of selection of a communication mode.
In summary, there is a need for a solution to the above-mentioned problems, which can trigger the switching of the D2D terminal mode when the radio link resources of D2D are scarce or the interference is severe, exchange necessary information according to the distance between the two parties of communication detected by D2D, and select the communication mode according to a relatively specific threshold range, so as to overcome the above-mentioned problems.
Disclosure of Invention
In view of the foregoing disadvantages of the prior art, the present invention is directed to providing a method for switching D2D terminal modes in a heterogeneous network hybrid networking, which aims to solve the problem that the prior art does not maximize the advantages of the heterogeneous network in communication mode selection in the hybrid networking network.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for D2D terminal mode switching under heterogeneous network hybrid networking is characterized by comprising the following steps:
s10, judging whether the D2D resource sharing mode in the D2D direct communication is an orthogonal mode, if so, turning to a step S20, and otherwise, turning to a step S30;
s20, the D2D terminal monitors a wireless resource link reconfiguration message in real time, confirms the number of RB resources allocated to use, monitors the distance between two communication parties of D2D, and if the number of the RB resources is smaller than the RB minimum threshold value, the step S40 is carried out, and if the number of the RB resources is larger than or equal to the RB minimum threshold value, the step D2D is carried out for direct communication;
s30, multiplexing and sharing wireless resources by the D2D terminal, monitoring the interference intensity of surrounding signals in real time, monitoring the distance between the two communication parties of D2D, if the signal interference is greater than a specific threshold value, turning to the step S40, and if the signal interference is less than or equal to the specific threshold value, turning back to the D2D for direct communication;
s40, the D2D terminal carries out P2P monitoring, exchanges necessary information with each other, preferentially monitors whether the WiFi Direct meets the switching condition, judges whether the resource and signal strength provided by the WiFi Direct are greater than a specific threshold value, and then the step S50 is carried out, and if the resource and signal strength are less than or equal to the specific threshold value, the step S70 is carried out;
s50, WiFi Direct linking and WiFi Direct mode switching are carried out;
s60, continuously monitoring whether the resources provided by the WiFi Direct are smaller than a specific threshold, if so, turning to the step S70, and otherwise, turning to the step S50;
and S70, the two communication parties exchange Bluetooth monitoring signals, and when the resources and the signal intensity which can be provided by the Bluetooth meet the conditions, the communication mode is selected to be switched to the Bluetooth communication mode.
Preferably, the necessary information in step S40 includes WiFi Direct name, WiFi channel, WiFi Direct authentication information, WiFi Direct-capable resource, WiFi signal strength, BT name, BT shared service type, BT pairing key, BT-capable resource, and BT signal strength.
Compared with the prior art, the invention has the beneficial effects that:
according to the D2D terminal mode switching method under the heterogeneous network hybrid networking provided by the invention, the D2D terminal mode switching is triggered according to the shortage of D2D wireless link resources or serious interference, necessary information is exchanged according to the distance between two communication parties detected by D2D communication, the communication mode is selected according to a specific threshold range, the advantages of each network are utilized to the maximum extent, the optimal communication mode of the system is selected for service communication, the user experience is improved, the advantages of the heterogeneous network are utilized to the maximum extent, and the overall performance of the heterogeneous network is comprehensively improved.
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FIG. 1 is a flow chart of a preferred embodiment of the present invention;
fig. 2 is a diagram illustrating the communication effect of the communication between the terminals according to the present invention.
Detailed Description
In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1-2, the method for switching D2D terminal modes in heterogeneous network hybrid networking provided by the present invention is characterized by comprising the following steps:
s10, judging whether the D2D resource sharing mode in the D2D direct communication is an orthogonal mode, if so, turning to a step S20, and otherwise, turning to a step S30;
s20, the D2D terminal monitors a wireless resource link reconfiguration message in real time, confirms the number of RB resources allocated to use, monitors the distance between two communication parties of D2D, and if the number of the RB resources is smaller than the RB minimum threshold value, the step S40 is carried out, and if the number of the RB resources is larger than or equal to the RB minimum threshold value, the step D2D is carried out for direct communication;
s30, multiplexing and sharing wireless resources by the D2D terminal, monitoring the interference intensity of surrounding signals in real time, monitoring the distance between the two communication parties of D2D, if the signal interference is greater than a specific threshold value, turning to the step S40, and if the signal interference is less than or equal to the specific threshold value, turning back to the D2D for direct communication;
s40, the D2D terminal carries out P2P monitoring, exchanges necessary information with each other, preferentially monitors whether the WiFi Direct meets the switching condition, judges whether the resource and signal strength provided by the WiFi Direct are greater than a specific threshold value, and then the step S50 is carried out, and if the resource and signal strength are less than or equal to the specific threshold value, the step S70 is carried out;
s50, WiFi Direct linking and WiFi Direct mode switching are carried out;
s60, continuously monitoring whether the resources provided by the WiFi Direct are smaller than a specific threshold, if so, turning to the step S70, and otherwise, turning to the step S50;
and S70, the two communication parties exchange Bluetooth monitoring signals, and when the resources and the signal intensity which can be provided by the Bluetooth meet the conditions, the communication mode is selected to be switched to the Bluetooth communication mode.
Specifically, two direct terminals may communicate through a plurality of network communication approaches, such as a D2D network, a WiFi network, and a bluetooth network, where each network has its own characteristics, and a 5G D2D network operates in an authorized frequency band, and its radio resource sharing mode generally includes an orthogonal mode and a multiplexing mode. The orthogonal mode shares the wireless resource of cellular communication in an orthogonal mode, uses the unused resource of cellular communication, and is suitable for being used when the idle wireless resource exists; the sharing of the multiplexing mode multiplexes the authorized frequency band in a reasonable mode, efficiently utilizes the wireless spectrum, and is suitable for scenes with high utilization rate of wireless resources. The WiFi network and the BT network are both used in unlicensed bands, which is a good complement to the cellular network and the D2D network. And aiming at the characteristics of each heterogeneous network, the communication modes are dynamically switched, and the comprehensive system performance of the whole heterogeneous hybrid network is improved. The D2D terminal monitors the interference of the multiplexing mode and the wireless resource reconfiguration of the orthogonal mode in real time, when the monitoring value reaches a certain threshold, the mode switching from the D2D network to other networks is started, meanwhile, the distance measurement and authentication of the D2D are completed on the D2D network, when the two communication parties of the D2D meet the specific available resources at a specific distance, the corresponding P2P communication mode is selected for switching, and if the two communication parties do not meet the specific available resources, the cellular communication mode is switched. The scheme of the invention carries out monitoring processing respectively aiming at different sharing modes of D2D infinite resources, when the wireless link resources distributed to the D2D terminal in an orthogonal mode are smaller than a specific threshold value, the switching of the communication mode can be triggered, and when the multiplexing mode monitors that the signal interference exceeds the specific threshold value, the switching of the communication mode can be started.
In some embodiments, the necessary information described in step S40 includes WiFi Direct name, WiFi channel, WiFi Direct authentication information, WiFi Direct-capable resource, WiFi signal strength, BT name, BT shared service type, BT pairing key, BT-capable resource, and BT signal strength. The D2D terminal monitors and calculates the necessary information of P2P communication conditions, and exchanges information through D2D Direct communication, mainly including WiFi Direct name, WiFi channel, monitoring signal strength and wireless link resource which can be provided, if the conditions are satisfied, the mode switching of WiFi Direct is performed, otherwise, the monitoring of the second P2P communication mode is performed.
In summary, the working principle of the invention is as follows:
according to the D2D terminal mode switching method under the heterogeneous network hybrid networking provided by the invention, the D2D terminal mode switching is triggered according to the shortage of D2D wireless link resources or serious interference, necessary information is exchanged according to the distance between two communication parties detected by D2D communication, the communication mode is selected according to a specific threshold range, the advantages of each network are utilized to the maximum extent, the optimal communication mode of the system is selected for service communication, the user experience is improved, the advantages of the heterogeneous network are utilized to the maximum extent, and the overall performance of the heterogeneous network is comprehensively improved.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the scope of the appended claims.
Claims (2)
1. A method for D2D terminal mode switching under heterogeneous network hybrid networking is characterized by comprising the following steps:
s10, judging whether the D2D resource sharing mode in the D2D direct communication is an orthogonal mode, if so, turning to a step S20, and otherwise, turning to a step S30;
s20, the D2D terminal monitors a wireless resource link reconfiguration message in real time, confirms the number of RB resources allocated to use, monitors the distance between two communication parties of D2D, and if the number of the RB resources is smaller than the RB minimum threshold value, the step S40 is carried out, and if the number of the RB resources is larger than or equal to the RB minimum threshold value, the step D2D is carried out for direct communication;
s30, multiplexing and sharing wireless resources by the D2D terminal, monitoring the interference intensity of surrounding signals in real time, monitoring the distance between the two communication parties of D2D, if the signal interference is greater than a specific threshold value, turning to the step S40, and if the signal interference is less than or equal to the specific threshold value, turning back to the D2D for direct communication;
s40, the D2D terminal carries out P2P monitoring, exchanges necessary information with each other, preferentially monitors whether the WiFiDirect meets the switching condition, judges whether the strength of the resource and the signal provided by the WiFi Direct is greater than a specific threshold value, and then the step S50 is carried out, and if the strength of the resource and the signal provided by the WiFi Direct is less than or equal to the specific threshold value, the step S70 is carried out;
s50, carrying out WiFiDirect linking and carrying out WiFiDirect mode switching;
s60, continuously monitoring whether the resource which can be provided by the WiFiDirect is smaller than a specific threshold, if so, turning to the step S70, otherwise, turning to the step S50;
and S70, the two communication parties exchange Bluetooth monitoring signals, and when the resources and the signal intensity which can be provided by the Bluetooth meet the conditions, the communication mode is selected to be switched to the Bluetooth communication mode.
2. The method for D2D terminal mode switching under the hybrid networking of heterogeneous networks according to claim 1, wherein the essential information in step S40 includes WiFi Direct name, WiFi channel, WiFi Direct authentication information, WiFi Direct-capable resource, WiFi signal strength, BT name, BT shared service type, BT pairing key, BT-capable resource, and BT signal strength.
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