WO2014056359A1

WO2014056359A1 - Method for direct communication between wireless terminals and wireless terminal thereof

Info

Publication number: WO2014056359A1
Application number: PCT/CN2013/082354
Authority: WO
Inventors: 朱昀
Original assignee: 中兴通讯股份有限公司
Priority date: 2012-10-09
Filing date: 2013-08-27
Publication date: 2014-04-17
Also published as: CN103716786B; CN103716786A

Abstract

A method for direct communication between wireless terminals and the wireless terminal thereof, the method for direct communication between wireless terminals including that: a transmission end transmits an encrypted request of direct communication services to a reception end directly or through a base station; said reception end receives a cryptographic key transmitted by the base station, and uses said cryptographic key to decrypt the received request of direct communication services. The embodiments of the present invention transmit cryptographic keys to wireless terminals through a base station, provide the possibility of controlling the direct communication services between terminals for operators, and promote the technical progress. Secondly, the solutions of the embodiments of the present invention are quite simple and feasible, and can reuse the user terminals which meet the present wireless protocols and furthest utilize the present wireless networks during implementation, while operators do not need to increase a lot of cost for network reconstruction.

Description

Method for directly communicating between wireless terminals and wireless terminal

Technical field

The present invention relates to the field of wireless communication technologies, and in particular, to a method for directly communicating between wireless terminals and a wireless terminal.

Background technique

Direct communication between wireless terminals is a very interesting communication method. Unlike traditional wireless communication, when direct communication technology is used, the wireless signal of the transmitting end (wireless terminal) directly reaches the receiving end (another wireless terminal). There is no need to route through the core network. At present, there are at least two application prospects for direct communication between wireless terminals:

1) In the field of public safety, such as natural disasters such as earthquakes and tsunamis, the coverage from the wireless base station is gone. If the wireless terminal can communicate directly with the wireless terminal, it means more valuable. life.

2) For the commercial field, as the data traffic in the traditional network grows exponentially, the core network is already unbearable. If the direct communication between the wireless terminals can be allowed, the data traffic originally in the middle of the network can be greatly diverted, so that the overall capacity of the network improve.

Direct communication between wireless terminals in the future may also have broader prospects, and will not be described here. However, the emergence of direct communication technology has also caused problems for operators, because traditional wireless communication is carried out under the control of operators, and operators charge communication fees to obtain revenue. In the related art implementation, after the wireless terminal initiates the service request, the core network routes the service request to the corresponding gateway unit (for example, routing the multimedia message service to the multimedia message center, and routing the web browsing service to the wireless application protocol (WLAN) gateway, etc.), The gateway is responsible for authenticating and calculating traffic for the service request of the terminal, and then sending the data to the billing center for calculation and generating a bill for billing. For direct communication technology, operators cannot control the occurrence and conduct of services, which means that they do not charge fees. As a result, operators will be resistant to this technology and hinder its marketization. Summary of the invention The embodiments of the present invention provide a method for directly communicating between wireless terminals and a wireless terminal, so as to solve the problem that the existing wireless terminals cannot directly charge by using direct communication.

An embodiment of the present invention provides a method for direct communication between wireless terminals, where the method includes: sending, by the sending end, the encrypted direct service request to the receiving end directly or through the base station;

The receiving end receives the key sent by the base station, and uses the key to decrypt the received direct service request.

Preferably, the sending end sends the encrypted direct service request to the receiving end directly or through the base station, including:

Receiving, by the sending end, a communication key sent by the base station, encrypting the direct service request by using the communication key, and sending the encrypted direct service request to the receiving end;

Receiving, by the receiving end, a key sent by the base station, and using the key to decrypt the received direct service request, including:

The receiving end receives the communication key sent by the base station, and decrypts the received direct service request using the communication key.

Sending, by the sending end, a direct service request to the base station, the base station determining to accept the direct service request according to the type of the sending end, and selecting a key to encrypt the service request, and then sending the service request to the receiving end The encrypted pass-through service request;

The receiving end receives the decryption key sent by the base station, and decrypts the received direct service request using the decryption key.

Preferably, the transmitting end is a class A or class B wireless terminal, and the receiving end is a class A or class C wireless terminal.

Preferably, the class A terminal is a wireless terminal capable of receiving data of other wireless terminals and receiving data by other wireless terminals; the class B terminal is only capable of receiving data by other wireless terminals. Wireless terminal; the class C terminal is a wireless terminal that can only receive data of other wireless terminals. An embodiment of the present invention further provides a wireless terminal, where the wireless terminal includes:

The sending and sending module is configured to: when the wireless terminal is the sending end, send the encrypted through service request to the receiving end directly or through the base station;

The receiving processing module is configured to: when the wireless terminal functions as a receiving end, receive a key sent by the base station, and use the key to decrypt the received direct service request.

Preferably, the processing and sending module is configured to: receive a communication key sent by the base station, encrypt the direct service request by using the communication key, and send the encrypted direct service request to the receiving end;

The receiving processing module is configured to: receive the communication key sent by the base station, and use the communication key to decrypt the received direct service request.

Preferably, the processing and sending module is configured to: send a direct service request to the base station, the base station determines to accept the direct service request according to the type of the sending end, and selects a key to encrypt the service request. And sending the encrypted direct service request to the receiving end; the receiving processing module is configured to: receive a decryption key sent by the base station, and use the decryption key to receive the received through service request Decrypt.

Preferably, the class A terminal is a wireless terminal capable of receiving data of other wireless terminals and receiving data by other wireless terminals; the class B terminal is a wireless terminal that can only receive data by other wireless terminals; A class C terminal is a wireless terminal that can only receive data of other wireless terminals.

The beneficial effects of the embodiments of the present invention are obvious. First, it provides a possibility for the operator to control the direct communication service between the terminals, and promotes the development of the technology. Secondly, the method is also very simple and feasible. Operator terminals that conform to existing wireless protocols can be reused and existing wireless networks can be utilized to the maximum extent, and operators do not need to increase the cost of network reconstruction. BRIEF abstract

1 is a schematic diagram of Embodiment 1 of signal transceiving for direct communication between wireless terminals according to the present invention; 2 is a schematic diagram of a second embodiment of a method for directly transmitting and receiving signals between wireless terminals according to the present invention; FIG. 3 is a flowchart of an embodiment of a method for directly communicating between wireless terminals in the first embodiment of the present invention;

4 is a flow chart showing an embodiment of a method for directly communicating between wireless terminals in the second embodiment shown in FIG. 2;

FIG. 5 is a schematic structural diagram of an embodiment of a wireless terminal according to the present invention.

Preferred embodiment of the invention

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other.

The embodiment of the present invention provides a method for direct communication between wireless terminals, the method includes: Step 101: The sending end sends the encrypted direct service request to the receiving end directly or through the base station; Step 102: The receiving end sends the base station to send Key, and use the key to decrypt the received direct service request. This embodiment includes the case where the two wireless terminals as shown in Fig. 1 communicate directly without the assistance of any network unit, and also includes the case where the two wireless terminals communicate directly through the local base station as shown in Fig. 2. But in either case, its characteristics are not required to be transmitted through the core network. This is also the biggest feature of direct communication between wireless terminals. Corresponding specific embodiments are described below in terms of implementations of the two direct communications described above, respectively.

Embodiment 1

As shown in FIG. 3, it is a flowchart of an embodiment of a method for directly performing communication between wireless terminals in Embodiment 1 of the present invention. The method includes:

Step 201: The operator sends a key for direct communication to each wireless terminal in the cell through the existing wireless network.

The operator transmits the key only to the wireless terminal that allows direct communication service through the base station. Specifically, the operator divides the wireless terminal into four categories: A, B, C, and D:

For a Class A wireless terminal, the operator assigns a separate key to the wireless terminal and will Sending a key to the wireless terminal and other wireless terminals in the cell;

For a class B wireless terminal, the operator assigns a separate key to the wireless terminal, and sends the key to the wireless terminal, but does not send the key of the other wireless terminal in the cell to the wireless terminal;

For a class C wireless terminal, the operator does not assign a separate key to the terminal, but sends a key of another wireless terminal in the cell to the wireless terminal;

For a Class D wireless terminal, the operator does not assign a key to the terminal and does not send any keys to it.

Since Class D terminals do not have any keys, such terminals cannot implement direct communication between terminals.

The four types of wireless terminals that operators divide are usually determined according to the type of the package to which the end user belongs. For example, some users who do not purchase the direct service package are assigned to the D class, and some package users who can only enjoy some direct services are classified. Class B, or Class C, the package users who enjoy all the services are Class A users.

In engineering implementation, the operator usually sends the above key to the wireless terminal through the base station, usually placing the wireless terminal in a connected state (RRC-connected), and then transmitting the key to the wireless terminal through dedicated signaling;

Step 202: The wireless terminal X initiates a direct service request, and encrypts the request sent by the key previously allocated to the wireless terminal.

The wireless terminal X is a transmitting end, and the wireless terminal X can only be the aforementioned Class A or Class B wireless terminal;

Step 203: The wireless terminal Y listens for a direct service request from another wireless terminal in the cell, and decrypts the received direct service request according to a key known by the user.

The wireless terminal Y is a receiving end, and the wireless terminal Y can only be the aforementioned class A or class C terminal.

According to all the key combinations of the different types of wireless terminals mentioned above, the following possibilities are possible:

1) For a class A terminal, since its key is known by all terminals in the network, the wireless terminal can receive data of other wireless terminals, and other wireless terminals can also receive the wireless terminal. The data;

2) For a class B terminal, it only knows the key assigned to itself, the wireless terminal can be discovered by other wireless terminals, but the wireless terminal cannot discover other wireless terminals;

3) For a class C terminal, it does not have a key assigned by itself, but it knows the keys of other wireless terminals in the cell, so the wireless terminal can discover other wireless terminals, but other wireless terminals cannot discover the wireless terminal.

In summary, the operator can control the direct service implementation of the wireless terminal by using the key assigned to the wireless terminal.

Embodiment 2

As shown in FIG. 4, it is a flowchart of a method for directly performing communication between wireless terminals in the second embodiment of the present invention. The present embodiment corresponds to the scenario shown in FIG. 2, and the wireless communication of the through communication in the scenario is shown in FIG. The difference between the terminal and the wireless communication terminal in the first embodiment is that: the data transmission between the terminals needs to be relayed by the local base station. The key can be placed in the local base station and the local base station performs the encryption operation according to the different types of the wireless terminal. The specific steps are as follows:

Step 301: The radio base station sends a key corresponding to the received data to each wireless terminal according to the type of the wireless terminal. Similar to the first embodiment, the types of the wireless terminal include the following four types:

1) For a class A terminal, the wireless terminal can receive data of other wireless terminals, and other wireless terminals can also receive data of the wireless terminal;

2) For a class B terminal, the wireless terminal can be found by other wireless terminals, but the wireless terminal cannot discover other wireless terminals;

3) For a class C terminal, the wireless terminal can discover other wireless terminals, but other wireless terminals cannot discover the wireless terminal;

4) For a class D terminal, the wireless terminal cannot discover other wireless terminals, and other wireless terminals cannot discover the wireless terminal;

Different from the first embodiment, the radio base station only transmits the key of the decrypted data to the terminals of the class A and the class C, that is, for the class A and class C wireless terminals, the radio base station will decrypt the data sent by other wireless terminals in the cell. The key is sent to the wireless terminal; For the class B and class D wireless terminals, the wireless base station does not send any key to it; step 302, the wireless terminal X initiates a direct service request, and the service request is sent to the wireless base station; the wireless terminal X is a transmitting end;

Step 303: The radio base station determines whether to accept the foregoing service request according to the type of the wireless terminal, and selects a key to encrypt the service data.

For Class A and Class B wireless terminals, the wireless base station accepts the direct service request initiated by it; for Class C and Class D wireless terminals, the wireless base station does not accept the direct service request initiated by it; for Class A and Class B wireless terminals, the wireless base station Pre-configure a separate key for encrypting data, encrypt the data sent by the key, and send the encrypted data to the entire cell;

Step 304: The wireless terminal X continuously sends the direct service data, and the wireless base station encrypts the data and sends the data to the entire cell.

At the same time, the wireless terminal Y listens for the straight-through service data from other wireless terminals in the cell, and decrypts the received data according to the key known by itself.

The wireless terminal Y is a receiving end. According to the description of step S301, only the class A and class C wireless terminals have the keys of other wireless terminals in the cell, so only the class A and class C wireless terminals can decrypt the received data.

Moreover, for the class A terminal, data can also be transmitted, and the data transmitted by the terminal can be decrypted by other wireless terminals in the cell after being encrypted by the wireless base station.

In the above embodiment, the base station transmits a key for the wireless terminal, which provides a possibility for the operator to control the direct communication service between the terminals, and promotes the development of the technology. Secondly, the method is also very simple and feasible, and can be implemented. By reusing user terminals that conform to existing wireless protocols and maximizing the use of existing wireless networks, operators do not need to increase the cost of network re-establishment.

As shown in FIG. 5, it is a schematic structural diagram of an embodiment of a wireless terminal according to the present invention. The wireless terminal includes a processing sending module 51 and a receiving processing module 52, where:

Processing a sending module, when the wireless terminal is a transmitting end, directly or through a base station to a receiving end Sending an encrypted direct service request;

The receiving processing module is configured to: when the wireless terminal is used as the receiving end, receive a key sent by the base station, and use the key to decrypt the received direct service request.

The processing and sending module is specifically configured to: receive a communication key sent by the base station, encrypt the direct service request by using the communication key, and send the encrypted direct service request to the receiving end; The receiving processing module is specifically configured to: receive the communication key sent by the base station, and decrypt the received direct service request by using the communication key. This case corresponds to the method embodiment described in Fig. 3.

Similarly, the processing sending module is specifically configured to: send a direct service request to the base station, the base station determines to accept the direct service request according to the type of the sending end, and selects a key to perform the service request. Encrypting, and then sending the encrypted pass-through service request to the receiving end; the receiving processing module is specifically configured to: receive a decryption key sent by the base station, and use the decryption key pair to receive the pass-through The business request is decrypted. This case corresponds to the method embodiment described in Fig. 4.

The sending end is a class A or class B wireless terminal, and the receiving end is a class A or class C wireless terminal. The class A terminal is a wireless terminal capable of receiving data of other wireless terminals and receiving data by other wireless terminals; the class B terminal is a wireless terminal that can only receive data by other wireless terminals; the class C terminal A wireless terminal that can only receive data from other wireless terminals.

The above wireless terminal can directly communicate with another wireless terminal under the control of the network side.

One of ordinary skill in the art will appreciate that all or a portion of the above steps may be accomplished by a program that instructs the associated hardware to be stored in a computer readable storage medium, such as a read only memory, a magnetic disk, or an optical disk. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the above embodiment may be implemented in the form of hardware or in the form of a software function module. The invention is not limited to any specific form of combination of hardware and software.

The above embodiments are only intended to illustrate the technical solutions of the present invention and are not to be construed as limiting the invention. Those of ordinary skill in the art will appreciate that the present invention can be used The modifications and equivalents of the technical solutions of the present invention are intended to be included within the scope of the appended claims.

Industrial applicability

The beneficial effects of the embodiments of the present invention are obvious. First, it provides a possibility for the operator to control the direct communication service between the terminals, and promotes the development of the technology. Secondly, the method is also very simple and feasible. Operator terminals that conform to existing wireless protocols can be reused and existing wireless networks can be utilized to the maximum extent, and operators do not need to increase the cost of network reconstruction.

Claims

claims

1. A method for direct communication between wireless terminals, the method includes:

The sending end sends the encrypted direct service request to the receiving end directly or through the base station;

2. The method according to claim 1, wherein,

The sending end sends an encrypted pass-through service request to the receiving end directly or through a base station, including: the sending end receives a communication key sent by the base station, uses the communication key to encrypt the pass-through service request, and sends the pass-through service request to the receiving end. The receiving end sends the encrypted direct service request;

The receiving end receives the key sent by the base station and uses the key to decrypt the received direct service request, including:

The receiving end receives the communication key sent by the base station, and uses the communication key to decrypt the received direct service request.

3. The method according to claim 1, wherein,

The sending end sends an encrypted direct service request to the receiving end directly or through a base station, including: the sending end sends a direct service request to the base station, and the base station determines to accept the direct service request according to the type of the sending end , and select a key to encrypt the service request, and then send the encrypted pass-through service request to the receiving end;

The receiving end receives the decryption key sent by the base station, and uses the decryption key to decrypt the received direct service request.

4. The method according to claim 2 or 3, wherein,

The sending end is a Class A or Class B wireless terminal, and the receiving end is a Class A or Class C wireless terminal.

5. The method according to claim 4, wherein,

The type A terminal can not only receive data from other wireless terminals, but also be connected by other wireless terminals. Wireless terminal for receiving data;

The Class B terminal is a wireless terminal that can only receive data from other wireless terminals;

The Class C terminal is a wireless terminal that can only receive data from other wireless terminals.

6. A wireless terminal, the wireless terminal includes:

The processing sending module is set to: When the wireless terminal is the sending end, it sends the encrypted pass-through service request to the receiving end directly or through the base station; and

The reception processing module is configured to: when the wireless terminal serves as the receiving end, receive the key sent by the base station, and use the key to decrypt the received pass-through service request.

7. The wireless terminal according to claim 6, wherein,

The processing and sending module is set to:

Receive the communication key sent by the base station, use the communication key to encrypt the direct service request, and send the encrypted direct service request to the receiving end;

The reception processing module is set to:

Receive the communication key sent by the base station, and use the communication key to decrypt the received direct service request.

8. The wireless terminal according to claim 6, wherein,

The processing and sending module is configured to: send a direct service request to the base station, the base station determines to accept the direct service request according to the type of the sending end, and selects a key to encrypt the service request, and then sends the request to the base station. The receiving end sends the encrypted pass-through service request; the reception processing module is configured to: receive the decryption key sent by the base station, and use the decryption key to decrypt the received pass-through service request.

9. The wireless terminal according to claim 6 or 7, wherein,

10. The wireless terminal according to claim 9, wherein,

The Class A terminal is a wireless terminal that can not only receive data from other wireless terminals, but also be able to receive data from other wireless terminals;