CN111935851A

CN111935851A - Communication method, WiFi access point and D2D terminal

Info

Publication number: CN111935851A
Application number: CN202010692621.6A
Authority: CN
Inventors: 张子敬
Original assignee: Guangdong Yinuo Communication Co Ltd
Current assignee: Guangdong Yinuo Communication Co Ltd
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2020-11-13

Abstract

The invention provides a communication method, a WiFi access point and a D2D terminal, wherein the communication method comprises the following steps: the WiFi access point sends the physical identifications of other D2D terminals accessed into the WiFi access point to the D2D terminal by a beacon frame or a probe response message, and carries a list of the security types of the WiFi access point, the D2D terminal receives the list information, stores the list to the local D2D terminal and determines the activation states of the other D2D terminals in the list; according to the target terminal selected by the user, the D2D terminal searches the activation state of the target terminal and preferentially selects the direct communication mode of the D2D for communication. The safety communication of the D2D terminal is ensured by fully utilizing the characteristics of the WiFi network, namely the safety and the accessible target D2D terminal are identified through the WiFi network, the safety of the D2D terminal communication can be improved through the method and the device, and the user experience is improved.

Description

Communication method, WiFi access point and D2D terminal

Technical Field

The invention belongs to the technical field of communication, and particularly relates to a communication method, a WiFi access point and a D2D terminal.

Background

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 use efficiency of wireless resources and expand the network coverage, so a great deal of research is obtained in the construction of 5G, the D2D technology can be applied to more scenes in the future, and the user experience is improved.

The 5GD2D 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 selecting a communication mode, that is, a problem of selecting which communication mode the terminal should select under what conditions to realize transmission of service data. Moreover, in the communication technology of D2D, once the D2D terminals discover each other, the direct communication can be completed, the security of the communication terminal needs to be considered, and there is a great security risk if a malicious terminal pretends to be. Therefore, the multi-scenario mode switching selection and the security problem in the D2D communication are worthy of extensive research.

The invention provides a communication method, a WiFi access point and a D2D terminal, which are based on the consideration of the trouble brought to users by security.

Disclosure of Invention

In view of the shortcomings of the prior art, the present invention aims to provide a communication method, a WiFi access point and a D2D terminal, and aims to solve the problem of security of direct communication of the terminal in a specific scenario in the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a method for realizing communication of user equipment in a wireless communication system through a WiFi network, wherein a D2D terminal accesses the WiFi network, and the method comprises the following steps:

the WiFi access point sends the physical identifications of the other D2D terminals accessed in the WiFi access point to the D2D terminal by a beacon frame or a probe response message and carries a list of the security types of the WiFi access point,

the D2D terminal receives the list information, stores the list locally in the D2D terminal and determines the activation state of other D2D terminals in the list;

according to the target terminal selected by the user, the D2D terminal searches the activation state of the target terminal and preferentially selects the direct communication mode of the D2D for communication.

In some embodiments, the determining the activation states of the other D2D terminals in the list includes:

determining the activation states of other D2D terminals in the list according to the D2D direct communication security policy of the D2D terminal;

if the security type level of the WiFi access point is not less than the D2D direct communication security policy threshold of the local D2D terminal, the activation states of other D2D terminals in the list are marked as an activation state Y;

if the security type level of the WiFi access point is smaller than the D2D direct communication security policy threshold of the local D2D terminal, the activation state of other D2D terminals in the list is marked as an inactivation state N;

if the activation state of the D2D terminal retrieval target terminal is the activation state Y, carrying out D2D direct communication with the target terminal;

and if the activated state of the D2D terminal retrieval target terminal is the non-activated state N, the D2D terminal retrieves the activated state of the target terminal and communicates with the target terminal in a traditional mode.

In some embodiments, the D2D direct communication security policy threshold of the D2D terminal is set according to specific D2D terminal security requirements.

In another aspect, the present invention provides a WiFi access point, where the WiFi access point includes:

and the receiving unit is used for receiving the access request sent by the terminal and is linked with the terminal.

And the sending unit is used for sending the terminal physical identification of the STA terminal accessed to the WiFi access point and carrying the safety type list to each STA terminal.

In yet another aspect, the present invention provides a D2D terminal, where the D2D terminal includes:

the device comprises an acquisition unit, a processing unit and a processing unit, wherein the acquisition unit is used for receiving a terminal physical identifier of a D2D terminal which is sent by a WiFi access point and accesses the WiFi access point and carrying a list of security types;

the storage unit is used for storing the list and determining the activation states of other D2D terminals in the list according to the D2D direct communication security policy of the D2D terminal;

and a connection unit for searching the activation state of the target terminal according to the target terminal selected by the user by the D2D terminal, and preferentially selecting the direct communication mode of D2D for communication.

In some embodiments, the D2D terminal further includes:

the distinguishing unit is used for determining the activation states of other D2D terminals in the list according to the D2D direct communication security policy of the D2D terminal;

Compared with the prior art, the invention has the beneficial effects that:

Drawings

Fig. 1 is a flow chart showing a communication method according to the present invention.

Fig. 2 is a schematic block diagram of the activated state flow of the other D2D terminal in the communication method of the present invention.

Fig. 3 is a network topology diagram of the communication method of the present invention.

Fig. 4 is a block diagram illustrating a WiFi access point according to the present invention.

Fig. 5 is a block diagram illustrating a D2D terminal 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.

Referring to fig. 1 to 3, fig. 1 to 3 disclose a method for implementing a communication of a user equipment in a wireless communication system through a WiFi network to which a D2D terminal accesses, the method comprising the steps of:

s1, the WiFi access point sends the terminal physical identification of other D2D terminals accessed in the WiFi access point and carries the list of the WiFi access point security type to the D2D terminal through a beacon frame or a probe response message,

s2, the D2D terminal receives the list information, stores the list locally in the D2D terminal, and determines the activation state of other D2D terminals in the list;

s3, according to the target terminal selected by the user, the D2D terminal searches the activation state of the target terminal and preferentially selects the direct communication mode of D2D for communication.

The basic principle of the invention is as follows: the WiFi access point sends a terminal physical identifier linked to the WiFi access point and a list carrying the security type of the WiFi access point to each D2D terminal through a beacon frame or a detection response message, each D2D terminal updates a local trusted terminal list according to the received list information and the authentication level of the WiFi access point, the activation states of other D2D terminals in the list are determined, according to a target terminal selected by a user, the D2D terminal retrieves the activation state of the target terminal, a communication mode is selected to communicate with the target terminal, and the D2D direct communication mode is preferentially selected to communicate. The scheme of the invention fully utilizes the characteristics of the WiFi network (all STA terminals linked to the same WiFi access point network are considered to be safe, and the physical distance between the terminals under the same WiFi access point network can meet the distance requirement of D2D communication) to ensure the safe communication of the D2D terminal, namely, the safe and accessible target D2D terminal is identified through the WiFi network, so that the safety of the D2D terminal communication can be improved and the user experience is improved.

Preferably, the determining the activation states of the other D2D terminals in the list includes the following steps:

s21, determining the activation states of other D2D terminals in the list according to the D2D direct communication security policy of the D2D terminal;

s22, if the security type level of the WiFi access point is not less than the D2D direct communication security policy threshold of the local D2D terminal, the activation states of other D2D terminals in the list are marked as an activation state Y;

s23, if the security type level of the WiFi access point is smaller than the D2D direct communication security policy threshold of the D2D terminal, the activation states of other D2D terminals in the list are marked as an inactivation state N;

s221, if the activation state of the D2D search target terminal is the activation state Y, carrying out D2D direct communication with the target terminal;

and S231, if the activated state of the D2D terminal searching target terminal is the non-activated state N, the D2D terminal searches for the activated state of the target terminal and communicates with the target terminal in a traditional mode.

The requirements of each device on security may be different for the D2D terminal, and the corresponding security levels are different for different WiFi network security types, and the security level order of the following security types decreases in order from the security level perspective;

that is, 802.1x > WPA2 PSK > WPA > WEP > OPEN, the security levels corresponding to the security types are set, and the security is higher as the levels are higher, as shown in the following table.

Safety type

802.1x

WPA2 PSK

WPA PSK

WEP

OPEN

Level of security

Grade IV

Class III

Class II

Class I

Level

0

As shown in the network topology of fig. 3, if the security requirement of the UE1(D2D terminal) is general, the security policy threshold is set to I level, so the active state of other terminals in the trusted terminal device list in the UE1 is y (yes);

if the security requirement of the UE2 is high, the security policy threshold is set to level IV, so the activation status of other terminals in the trusted terminal device list in the UE2 is n (no);

if the UE3 has no special security requirement, its security policy threshold is set to level 0, so the active status of other terminals in the trusted terminal device list in UE3 is Y.

In summary, the UE1 lists other UEs as trusted terminals because the security policy threshold of the UE1 is less than the security type level of the WiFi access point;

the UE2 lists the other UEs as untrusted terminals because the security policy threshold of the UE2 is greater than the security type level of the WiFi access point;

the UE3 lists the other UEs as trusted terminals because the security policy threshold of the UE3 is less than the security type level of the WiFi access point;

it is understood that the activation state of the UE1 in the trusted list of the UE3 is Y, and the activation state of the UE3 in the trusted list of the UE1 is also Y; therefore, the priority communication mode between the UE1 and the UE3 is D2D direct communication.

It may be appreciated that, while UE1 and UE3 list UE2 as trusted terminals, UE2 lists UE1 and UE3 as untrusted terminals; therefore, the UE2 and the UE1 can only communicate in a conventional manner (e.g., cellular network, bluetooth, etc.); UE2 and UE3 may also be able to communicate only in a conventional manner.

Preferably, the D2D direct communication security policy threshold of the D2D terminal is set according to the specific D2D terminal security requirement.

Referring to fig. 4, in another aspect, the present invention further provides a WiFi access point, including:

a receiving unit 41, configured to receive an access request sent by a terminal, and link with the terminal.

And a sending unit 42, configured to send the terminal physical identifier of the STA terminal accessing the WiFi access point and a list carrying security types to each STA terminal.

Referring to fig. 5, in yet another aspect, the present invention is also directed to a D2D terminal, the D2D terminal including:

the acquiring unit 51 is configured to receive a terminal physical identifier of a D2D terminal accessing a WiFi access point, which is sent by the WiFi access point, and carry a list of security types;

the storage unit 52 is used for storing the list and determining the activation states of other D2D terminals in the list according to the D2D direct communication security policy of the D2D terminal;

the connection unit 54 searches the activation state of the target terminal according to the target terminal selected by the user and the D2D terminal, and preferentially selects the direct communication mode D2D for communication.

In some embodiments, the D2D terminal further includes:

the distinguishing unit 53 is used for determining the activation states of other D2D terminals in the list according to the D2D direct communication security policy of the D2D terminal;

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

1. A method for enabling a user equipment to communicate in a wireless communication system through a WiFi network, wherein a D2D terminal accesses the WiFi network, the method comprising:

2. The communication method according to claim 1, wherein the determining the activation status of the other D2D terminals in the list comprises:

3. The communication method according to claim 2, wherein the D2D pass-through communication security policy threshold of the D2D terminal is set according to specific D2D terminal security requirements.

4. A WiFi access point, the WiFi access point comprising:

5. A D2D terminal, wherein the D2D terminal comprises:

6. The D2D terminal of claim 5, wherein the D2D terminal further comprises: