CN111065060A

CN111065060A - Direct communication method and device

Info

Publication number: CN111065060A
Application number: CN201811210329.5A
Authority: CN
Inventors: 赵亚利
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2018-10-17
Filing date: 2018-10-17
Publication date: 2020-04-24
Anticipated expiration: 2038-10-17
Also published as: CN111065060B; WO2020078288A1; CN115278614A

Abstract

The invention discloses a method and equipment for direct communication, which are used for solving the problem that the RAT used by unicast or multicast between direct communication terminals cannot be determined in the prior art. The management equipment determines the common RAT supported by the sending terminal and the receiving terminal which need to carry out direct communication in the communication group so as to ensure that the sending terminal and the receiving terminal use the same RAT for direct communication.

Description

Direct communication method and device

Technical Field

The present invention relates to the field of wireless communications, and in particular, to a method and apparatus for direct communication.

Background

In the 5G system, devices close to each other allow direct communication between the devices, and a typical direct communication scenario includes:

unicast communication, namely one-to-one communication between a sending terminal and a receiving terminal;

multicast communication, that is, a sending terminal can send the same data to all receiving terminals in a communication group at a time, and when there is only one receiving terminal in the communication group, it is unicast communication. Unicast communication can be regarded as a special case of multicast communication;

broadcast communication, i.e., one transmitting terminal can transmit the same data to all nearby receiving terminals at a time, does not guarantee the reliability of communication.

For example, some terminals only support a Long Term Evolution (LTE) Radio Access Technology (RAT) on the direct communication interface, some terminals only support a New Radio access technology (NR) on the direct communication interface, and some terminals may support both an LTE Radio access technology and an NR Radio access technology on the direct communication interface.

In order to realize reliability of unicast or multicast communication of the direct communication interface, it is necessary to require that a radio access technology used when a transmitting terminal of the direct communication interface transmits data is supportable by a receiving terminal.

In the prior art, a direct communication interface between terminals multiplexes a broadcast mechanism of the direct communication interface when performing unicast communication, and there is no related mechanism that can determine an RAT used for unicast or multicast between the terminals performing direct communication, and it cannot be guaranteed that the same radio access technology is used when data is transmitted and received between a unicast transmitting terminal and a unicast receiving terminal.

In summary, at present, it is impossible to determine the RAT used for unicast or multicast between direct communication terminals.

Disclosure of Invention

The invention provides a direct communication method and direct communication equipment, which are used for solving the problem that the RAT used by unicast or multicast between direct communication terminals cannot be determined in the prior art.

In a first aspect, a method for direct communication provided in an embodiment of the present invention includes:

the management equipment determines RAT information supported by a sending terminal and a receiving terminal which need to be directly communicated in a communication group; and the management equipment determines the RAT used by the sending terminal and the receiving terminal for direct communication according to the RAT information supported by the sending terminal and the receiving terminal, so that the sending terminal and the receiving terminal use the same RAT for direct communication.

According to the method, the management equipment determines the common RAT (radio access technology) supported by the sending terminal and the receiving terminal which need to be in direct communication in the communication group for direct communication, so that the sending terminal and the receiving terminal use the same RAT for direct communication.

In an optional implementation manner, the management device is the sending terminal or the receiving terminal; or the management equipment is head equipment of a communication group; or the management device is a network side device.

The method has the advantages of wide selection range of management equipment, improved application feasibility, more flexible selection mode and higher operability.

In an optional implementation manner, the management device is the sending terminal or the receiving terminal; the management device determines RAT information supported by a transmitting terminal and a receiving terminal which need to perform direct communication in a communication group, and the RAT information includes:

and the management equipment receives the RAT information supported by the management equipment through the group joining process reported by the terminals in the communication group.

In an optional implementation manner, the management device is a network side device; the management device determines RAT information supported by a transmitting terminal and a receiving terminal which need to perform direct communication in a communication group, and the RAT information includes:

the management device receives RAT information supported by the management device itself, which is reported by a terminal in a communication group through a User Equipment (UE) capability reporting process or an individual reporting process.

In an optional implementation manner, after determining RAT information supported by a sending terminal and a receiving terminal that need to perform direct communication in a communication group, the management device further includes:

if the management device is the sending terminal, the management device informs the receiving terminal of the determined RAT used by the receiving terminal for direct communication; or

If the management device is the receiving terminal, the management device notifies the determined RAT used by the sending terminal for direct communication to the sending terminal; or

And if the management device is the cluster head device or the network side device, the management device notifies the determined sending terminal to the sending terminal and notifies the determined RAT used by the receiving terminal for direct communication to the receiving terminal.

In an optional implementation manner, the notifying, by the management device, the determined RAT used by the receiving terminal for direct communication to the receiving terminal includes:

if the management device is the sending terminal, the management device notifies the determined RAT to a receiving terminal through a direct communication opposite end discovery process related message or a direct communication connection establishment related message;

the method for notifying the determined RAT used by the receiving terminal for direct communication to the sending terminal by the management device includes:

if the management device is the receiving terminal, the management device notifies the determined RAT to the sending terminal through a direct communication opposite end discovery process related message or a direct communication connection establishment related message.

In an optional implementation manner, the notifying, by the management device, the determined RAT used for the direct communication by the sending terminal to the sending terminal and the determined RAT used for the direct communication by the receiving terminal to the receiving terminal includes:

if the management device is a group head device, the management device notifies the determined RAT used for direct communication of the sending terminal to the sending terminal and notifies the determined RAT used for direct communication of the receiving terminal to the receiving terminal through a group join acknowledgement message or a direct communication link configuration message; or

The management device is a network side device, and the management device notifies the determined RAT used for direct communication of the sending terminal to the sending terminal and notifies the determined RAT used for direct communication of the receiving terminal to the receiving terminal through a Radio Resource Control (RRC) connection establishment or RRC connection reconfiguration message.

In an optional implementation manner, the management device is one of the sending terminal, the receiving terminal, and a head-of-group device;

the method for notifying the determined RAT used for the direct communication of the sending terminal to the sending terminal and notifying the determined RAT used for the direct communication of the receiving terminal to the receiving terminal by the management device includes:

and if the number of the terminals in the direct communication group is more than 2, the management equipment broadcasts an RAT notification used for direct communication in a broadcasting mode.

In an optional implementation manner, the determining, by the management device, the RAT used for direct communication between the sending terminal and the receiving terminal includes:

and the management equipment takes one of the RATs commonly supported by the sending terminal and the receiving terminal as the RAT used by the sending terminal and the receiving terminal for direct communication.

According to the method, the sending terminal and the receiving terminal use the same RAT for direct communication, so that the data sent by the sending terminal through the direct communication can be received by the receiving terminal, and the reliability of the direct communication between the terminals is improved.

In an optional implementation manner, the method for enabling the management device to use one of RATs commonly supported by the sending terminal and the receiving terminal as the RAT used for direct communication between the sending terminal and the receiving terminal includes:

if only one RAT is commonly supported by the sending terminal and the receiving terminal, the management device determines the commonly supported RAT as the RAT used by the sending terminal and the receiving terminal for direct communication; or

If the RATs supported by the sending terminal and the receiving terminal are multiple, the management device selects one RAT from the commonly supported RATs as the RAT used for direct communication between the sending terminal and the receiving terminal.

In an optional embodiment, the selecting, by the management device, one RAT among the commonly supported RATs as a RAT used for direct communication between the sending terminal and the receiving terminal includes:

the management equipment determines the RAT used by the load or the logical channel when the direct communication interface transmits based on the load or the logical channel of the direct communication interface; or

The management device determines, based on each data packet of the direct communication interface, a RAT used by the data packet when transmitted by the direct communication interface; or

And the management equipment selects one RAT according to the sending terminal and/or the receiving terminal.

According to the method, the management equipment determines the RAT for the sending terminal and the receiving terminal in a flexible mode, and the method can be determined according to specific communication scenes, so that the system is more flexible and has higher applicability.

In an optional implementation manner, if the management device is the sending terminal and the receiving terminal do not have a common supported RAT, the management device does not perform direct communication with the receiving terminal; or

The management device is the receiving terminal, the network side device or the group head device, and the sending terminal and the receiving terminal do not have a common supported RAT, the management device notifies the sending terminal that the sending terminal and the receiving terminal cannot perform direct communication.

According to the method, when the sending terminal and the receiving terminal do not have the RAT supported by the sending terminal and the receiving terminal, the management device determines that the sending terminal and the receiving terminal do not carry out direct communication, and resource waste caused by transmission failure when the sending terminal blindly sends data to the receiving terminal is avoided.

In a second aspect, a method for direct communication provided by an embodiment of the present invention includes:

the first transmission terminal reports the RAT information supported by the first transmission terminal to the management equipment; the first transmission terminal receives the RAT which is determined by the management equipment and is used for direct communication between the first transmission terminal and a second transmission terminal; the first transmission terminal communicates directly with the second transmission terminal according to the RAT.

According to the method, the first transmission terminal and the second transmission terminal inform the RAT to carry out direct communication according to the management equipment, and the RAT used when the sending terminal carries out direct communication is the RAT supported by the receiving terminal, so that the data sent by the sending terminal through the direct communication can be received by the receiving terminal, and the reliability of the direct communication between the terminals is improved.

In an alternative embodiment, the second transmission terminal is one or more.

In an optional implementation manner, the receiving, by the first transmission terminal, the RAT determined by the management device to be used for direct communication between the first transmission terminal and the second transmission terminal includes:

if the management device is a network side device, the first transmission terminal receives, through an RRC connection setup message or an RRC reconfiguration message, an RAT used for direct communication between the first transmission terminal and the second transmission terminal, which is determined by the management device; or

If the management device is a group head device, the first transmission terminal receives the RAT which is determined by the management device and is used for direct communication between the first transmission terminal and the second transmission terminal through a group join confirmation message or a Sildelink configuration message; or

The management device is a sending terminal or a receiving terminal, and the first transmission terminal receives the RAT determined by the management device and used for direct communication between the first transmission terminal and the second transmission terminal through an opposite end discovery process message or a direct communication connection establishment process message.

In an optional implementation manner, if the first transmission terminal is the sending terminal, and the first transmission terminal determines that the notification that the management device prohibits the direct communication is received, the first transmission terminal does not perform the direct communication with the second transmission terminal.

In an optional embodiment, the management device is a sending terminal;

the first transmission terminal directly communicating with the second transmission terminal according to the RAT, comprising:

if the number of the receiving terminals is 1, the first transmission terminal performs unicast communication with the second transmission terminal according to the RAT; or

And if a plurality of receiving terminals exist, the first transmission terminal performs group communication with the second transmission terminal according to the RAT.

In an optional implementation manner, the management device is the sending terminal or the receiving terminal; the reporting, by the first transmission terminal, RAT information supported by the first transmission terminal to a management device includes:

the first transmission terminal reports the RAT information supported by the first transmission terminal to the management equipment through an opposite terminal discovery process, a unicast connection establishment process, a UE capacity reporting process or an independent reporting process;

the management device is a head of group device of a communication group; the reporting, by the first transmission terminal, RAT information supported by the first transmission terminal to a management device includes:

the first transmission terminal reports the RAT information supported by the first transmission terminal to the management equipment in a group joining process or a UE capability reporting process or an independent reporting process;

the management device is a network side device; the reporting, by the first transmission terminal, RAT information supported by the first transmission terminal to a management device includes:

and the first transmission terminal reports the RAT information supported by the first transmission terminal to the management equipment in the UE capacity reporting process or the independent reporting process.

In an optional embodiment, the direct communication between the first transmission terminal and the second transmission terminal according to the RAT includes:

if the RAT notified by the management device is determined according to the load of the direct communication interface, the first transmission terminal selects a corresponding RAT to carry out direct communication with the second transmission terminal when the direct communication interface carries the data transmission requirement; or

If the RAT notified by the management device is determined according to a logical channel, the first transmission terminal selects a corresponding RAT to perform direct communication with the second transmission terminal when the logical channel of a direct communication interface has a data transmission requirement; or

If the RAT notified by the management device is determined according to the data packet, the first transmission terminal selects the corresponding RAT to directly communicate with the second transmission terminal when the data packet of the direct communication interface arrives; or

If the RAT notified by the management device is determined according to the sending terminal and/or the receiving terminal, the first transmission terminal selects a corresponding RAT according to a second transmission terminal when a direct communication interface has a data transmission requirement, and the first transmission terminal and the second transmission terminal perform direct communication.

In a third aspect, an embodiment of the present invention provides a management device for direct communication, where the device includes: a processor, a memory, and a transceiver;

wherein the processor is configured to read a program in the memory and execute:

determining RAT information supported by a sending terminal and a receiving terminal which need to carry out direct communication in a communication group;

and determining the RAT used by the sending terminal and the receiving terminal for direct communication according to the RAT information supported by the sending terminal and the receiving terminal, so that the sending terminal and the receiving terminal use the same RAT for direct communication.

In a possible implementation manner, the management device is the sending terminal or the receiving terminal; or the management equipment is head equipment of a communication group; or the management device is a network side device.

In a possible implementation manner, if the management device is the sending terminal or the receiving terminal, the processor is specifically configured to:

and receiving the self-supported RAT information reported by the terminals in the communication group through the group joining process.

In a possible implementation manner, if the management device is a network side device, the processor is specifically configured to:

and receiving the self-supported RAT information reported by the terminals in the communication group through the UE capacity reporting process or the independent reporting process.

In one possible implementation, the processor is specifically configured to:

if the management device is the sending terminal, after determining RAT information supported by the sending terminal and the receiving terminal which need to be in direct communication in a communication group, notifying the determined RAT used by the receiving terminal in direct communication to the receiving terminal; or

If the management device is the receiving terminal, after determining RAT information supported by a sending terminal and a receiving terminal which need to be in direct communication in a communication group, notifying the determined RAT used by the sending terminal in direct communication to the sending terminal; or

The management device is the group head device or the network side device, and after determining RAT information supported by a sending terminal and a receiving terminal which need to perform direct communication in a communication group, the management device notifies the sending terminal of the determined sending terminal and notifies the receiving terminal of the RAT used by the receiving terminal for direct communication.

In one possible implementation, the processor is specifically configured to:

if the management device is the sending terminal, notifying the determined RAT to a receiving terminal through a direct communication opposite end discovery process related message or a direct communication connection establishment related message; or

And if the management device is the receiving terminal, notifying the determined RAT to the sending terminal through a direct communication opposite end discovery process related message or a direct communication connection establishment related message.

In one possible implementation, the processor is specifically configured to:

if the management device is a group head device, notifying the determined RAT used by the direct communication of the sending terminal to the sending terminal and notifying the determined RAT used by the direct communication of the receiving terminal to the receiving terminal through a group join confirmation message or a direct communication link configuration message; or

And if the management device is a network side device, notifying the determined RAT used by the direct communication of the sending terminal to the sending terminal and notifying the determined RAT used by the direct communication of the receiving terminal to the receiving terminal through an RRC connection establishment or an RRC connection reconfiguration message.

In a possible implementation manner, the management device is one of the sending terminal, the receiving terminal, and a head-of-group device, and the processor is specifically configured to:

In one possible implementation, the processor is specifically configured to:

and one of RATs commonly supported by the sending terminal and the receiving terminal is used as the RAT used by the sending terminal and the receiving terminal for direct communication.

In one possible implementation, the processor is specifically configured to:

if only one RAT is commonly supported by the sending terminal and the receiving terminal, determining the commonly supported RAT as the RAT used by the sending terminal and the receiving terminal for direct communication; or

And if the plurality of RATs supported by the sending terminal and the receiving terminal together are multiple, selecting one RAT from the commonly supported RATs as the RAT used by the sending terminal and the receiving terminal for direct communication.

In one possible implementation, the processor is specifically configured to:

determining a RAT used by a bearer or a logical channel when the bearer or the logical channel is transmitted by a direct communication interface based on the bearer or the logical channel of the direct communication interface; or

Determining, based on each data packet of a direct communication interface, a RAT used by the data packet when transmitted by the direct communication interface; or

Selecting a RAT according to the sending terminal and/or the receiving terminal.

In one possible implementation, the processor is further configured to:

if the management device is the sending terminal and the receiving terminal do not have the common supported RAT, the management device does not directly communicate with the receiving terminal; or

And the management device is the receiving terminal or the network side device or the group head device, and the sending terminal and the receiving terminal do not have a common supported RAT, and then the sending terminal and the receiving terminal are notified that direct communication cannot be carried out between the sending terminal and the receiving terminal.

In a fourth aspect, an embodiment of the present invention provides a first transmission terminal for direct communication, where the terminal includes: a processor, a memory, and a transceiver;

reporting RAT information supported by the management equipment to the management equipment through a transceiver; receiving, by a transceiver, the RAT used by the first transmission terminal and the second transmission terminal through direct communication, which is determined by the management device; communicating directly with the second transmitting terminal via a transceiver in accordance with the RAT.

In one possible implementation, the second transmission terminal is one or more.

In one possible implementation, the processor is specifically configured to:

if the management device is a network side device, receiving the RAT which is determined by the management device and is used for direct communication between the first transmission terminal and the second transmission terminal through an RRC connection establishment message or an RRC reconfiguration message; or

If the management device is a group head device, receiving the RAT which is determined by the management device and is used for the direct communication between the first transmission terminal and the second transmission terminal through a group joining confirmation message or a Sildelink configuration message; or

The management device is a sending terminal or a receiving terminal, and receives the RAT which is determined by the management device and is used for direct communication between the first transmission terminal and the second transmission terminal through an opposite terminal discovery process message or a direct communication connection establishment process message.

In one possible implementation, the processor is further configured to:

and if the first transmission terminal is the sending terminal, after determining that the notification that the direct communication of the management device is forbidden is received, not performing direct communication with the second transmission terminal.

In one possible implementation, the management device is a sending terminal, and the processor is further configured to:

if the number of the receiving terminals is 1, performing unicast communication with the second transmission terminal according to the RAT; or

And if a plurality of receiving terminals are available, performing group communication with the second transmission terminal according to the RAT.

In one possible implementation, the processor is specifically configured to:

the management equipment is the sending terminal or the receiving terminal, and reports the RAT information supported by the management equipment to the management equipment through an opposite terminal discovery process or a unicast connection establishment process or a UE capacity reporting process or an independent reporting process; or

The management equipment is group head equipment of a communication group, and reports the RAT information supported by the management equipment to the management equipment in a group joining process or a UE capacity reporting process or an independent reporting process; or

The management equipment is network side equipment and reports the RAT information supported by the management equipment to the management equipment in the UE capacity reporting process or the independent reporting process.

In one possible implementation, the processor is specifically configured to:

if the RAT notified by the management device is determined according to the load of the direct communication interface, selecting a corresponding RAT to carry out direct communication with the second transmission terminal when the direct communication interface carries the data transmission requirement; or

If the RAT notified by the management device is determined according to a logical channel, selecting a corresponding RAT to perform direct communication with the second transmission terminal when the logical channel of a direct communication interface has a data transmission requirement; or

If the RAT notified by the management device is determined according to the data packet, selecting the corresponding RAT to perform direct communication with the second transmission terminal when the data packet of the direct communication interface arrives; or

And if the RAT notified by the management equipment is determined according to the sending terminal and/or the receiving terminal, selecting a corresponding RAT according to a second transmission terminal when the direct communication interface has a data transmission requirement, and performing direct communication with the corresponding second transmission terminal.

In one possible implementation, the processor is specifically configured to:

in a fifth aspect, another management device for direct communication according to an embodiment of the present invention includes:

a determination module: determining RAT information supported by a sending terminal and a receiving terminal which need to carry out direct communication in a communication group;

a processing module: and the RAT used for direct communication between the sending terminal and the receiving terminal is determined according to the RAT information supported by the sending terminal and the receiving terminal.

In a sixth aspect, another direct communication first transmission terminal provided in an embodiment of the present invention includes:

a reporting module: the management equipment is used for reporting RAT information supported by the management equipment to the management equipment;

a receiving module: the RAT is used for receiving the RAT which is determined by the management equipment and is used by the first transmission terminal and the second transmission terminal for direct communication;

a communication module: for direct communication with the second transmitting terminal in accordance with the RAT.

In a seventh aspect, an embodiment of the present invention further provides a computer-readable medium, on which a computer program is stored, where the computer program is executed by a processor to implement the steps of any one of the methods in direct communication.

In addition, for technical effects brought by any one implementation manner of the third aspect to the seventh aspect, reference may be made to technical effects brought by different implementation manners of the first aspect and the second aspect, and details are not described here again.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic system structure diagram of a direct communication method according to an embodiment of the present invention;

fig. 2 is a flowchart illustrating a method of a first direct communication system according to an embodiment of the present invention;

fig. 3 is a flowchart illustrating a second method of a direct communication system according to an embodiment of the present invention;

fig. 4 is a flowchart illustrating a method of a third direct communication system according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a first management device according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a first transmission terminal according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a second management device according to the embodiment of the present invention;

fig. 8 is a schematic structural diagram of a second transmission terminal according to a second embodiment of the present invention;

fig. 9 is a flowchart illustrating a method for managing a device side in a direct communication method according to an embodiment of the present invention;

fig. 10 is a flowchart illustrating a method at a first transmitting terminal side in a direct communication method according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Some of the words that appear in the text are explained below:

1. the terminal referred in the embodiment of the invention is a mobile phone, a platform and the like.

2. The network side equipment referred by the embodiment of the invention is a macro base station, a micro base station and the like.

3. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

The embodiments of the present invention will be described in further detail with reference to the drawings attached hereto.

As shown in fig. 1, a method and apparatus for direct communication according to an embodiment of the present invention includes: a management device 10 and a first transmission terminal 20.

A management device 10, configured to determine RAT information supported by a sending terminal and a receiving terminal that need to perform direct communication in a communication group; and determining the RAT used by the sending terminal and the receiving terminal for direct communication according to the RAT information supported by the sending terminal and the receiving terminal, so that the sending terminal and the receiving terminal use the same RAT for direct communication.

The first transmission terminal 20 is configured to report RAT information supported by the first transmission terminal to the management device; receiving the RAT determined by the management device and used for direct communication between the first transmission terminal and a second transmission terminal; and performing direct communication with the second transmission terminal according to the RAT.

Through the scheme, the management device determines the common RAT (radio access technology) supported by the sending terminal and the receiving terminal which need to be in direct communication in the communication group for direct communication, so that the sending terminal and the receiving terminal use the same RAT for direct communication.

The communication group here is a group of terminals that perform communication between the terminals.

If the first transmission terminal is a sending terminal, the second transmission terminal is a receiving terminal; or

If the first transmission terminal is a receiving terminal, the second transmission terminal is a sending terminal.

In the embodiment of the present invention, the management device includes the following types:

the management device is the sending terminal or the receiving terminal; or the management equipment is head equipment of a communication group; or the management device is a network side device.

That is, the present invention provides four specific embodiments of direct communication, which are described below:

the first scheme is as follows: the management apparatus is a transmission terminal of direct communication.

Taking a sending terminal in direct communication as a management device as an example:

the sending terminal and the receiving terminal which need to carry out direct communication in the communication group determine RAT information supported by the sending terminal and the receiving terminal through self capability information, the receiving terminal needs to report the RAT information supported by the receiving terminal to the sending terminal, the sending terminal determines the RAT used when the sending terminal and the receiving terminal carry out direct communication, and the RAT is the RAT supported by the sending terminal and the receiving terminal together.

There are various ways for the receiving terminal to report the RAT information supported by itself to the sending terminal, which are illustrated below:

the reporting mode is as follows: reporting the RAT information through an opposite end discovery process;

and the receiving terminal reports the RAT information to the sending terminal through an opposite terminal discovery process.

Correspondingly, the sending terminal also obtains the RAT information reported by the receiving terminal through an opposite terminal discovery process.

And a second reporting mode: reporting the RAT information through a unicast connection establishment process;

and the receiving terminal reports the RAT information to the sending terminal through a unicast connection process.

Correspondingly, the sending terminal also obtains the RAT information reported by the receiving terminal through a unicast connection process.

And a third reporting mode: reporting the RAT information through a UE capability reporting process;

and the receiving terminal reports the RAT information to the sending terminal through a UE capacity reporting process.

Correspondingly, the sending terminal also determines the RAT information of the receiving terminal according to the UE capability information reported by the receiving terminal.

And a reporting mode is four: and reporting the RAT information independently.

And the receiving terminal reports the RAT information to the sending terminal through an independent reporting process.

Correspondingly, the sending terminal obtains the RAT information reported by the receiving terminal independently.

And a fifth reporting mode: if the sending terminal is a group head device in the communication group, the receiving terminal can report the RAT information through a group joining process.

And the receiving terminal reports the RAT information to the sending terminal through a group joining process.

Correspondingly, the sending terminal acquires the RAT information reported in the joining process of the receiving terminal group.

The sending terminal determines RAT information supported by the sending terminal through self capability information, and after the RAT information reported by the receiving terminal is acquired, the RAT supported by the sending terminal and the receiving terminal is determined according to the RAT information supported by the sending terminal and the receiving terminal, and one RAT which is used for direct communication between the sending terminal and the receiving terminal is selected from the RAT supported by the sending terminal and the receiving terminal.

If a sending terminal and a receiving terminal exist in the communication group, unicast communication is used when the sending terminal and the receiving terminal carry out direct communication, and the sending terminal determines the RAT commonly supported by the sending terminal and the receiving terminal according to the RAT information supported by the sending terminal and the RAT information reported by the receiving terminal;

if a sending terminal in a communication group has a plurality of receiving terminals, the sending terminal determines to use multicast communication when performing direct communication with the receiving terminals in the communication group, and the sending terminal determines the RAT supported by the sending terminal and all the receiving terminals according to the RAT information supported by the sending terminal and the RAT information reported by all the receiving terminals in the communication group;

the following describes a procedure for determining RATs commonly supported by the transmitting terminal and the receiving terminal for a specific communication scenario.

Communication scenario 1: the number of terminals in the communication group is equal to 2;

the number of terminals in the communication group is equal to 2, unicast communication is used when the sending terminal and the receiving terminal carry out direct communication, and the management equipment determines the RAT commonly supported by the sending terminal carrying out the direct communication and the receiving terminal carrying out the direct communication.

For example, when the terminals performing direct communication in the communication group include the transmitting terminal a and the receiving terminal B, the transmitting terminal and the receiving terminal use unicast communication. The transmitting terminal a is a management device, the transmitting terminal a only supports the LTE radio access technology, and the receiving terminal B can support either the LTE or the NR radio access technology.

The transmitting terminal a determines that the intersection of the RATs supported by itself and the receiving terminal B includes only NR radio access technologies. The transmitting terminal A determines that the RAT used for direct communication between itself and the receiving terminal is NR.

Communication scenario 2: the number of terminals in the communication group is more than 2;

the number of terminals in the communication group is more than 2, the sending terminal and the receiving terminal use multicast communication when performing direct communication, and the management device determines the RAT commonly supported by the sending terminal and all the receiving terminals performing direct communication in the communication group.

For example, the terminals in the communication group that perform direct communication include a transmitting terminal a, a receiving terminal B, and a receiving terminal C. The sending terminal A is management equipment, and only supports the LTE wireless access technology; the receiving terminal B supports both LTE wireless access technology and NR wireless access technology; the receiving terminal C supports only LTE radio access technology.

The transmitting terminal a determines that the RAT commonly supported by itself, the receiving terminal B, and the receiving terminal C only includes the NR radio access technology, and the RAT used for the direct communication between the transmitting terminal a and the receiving terminal B and the receiving terminal C is the LTE radio access technology.

The present invention provides a possible embodiment, if multicast communication is used between terminals, there is no RAT commonly supported between terminals in a communication group, and if the management device is a sending terminal, the sending terminal may directly communicate with a receiving terminal through unicast communication, and the specific implementation steps may join the first communication scenario, which is not described herein again.

In the embodiment of the present invention, if the RAT capabilities supported by the sending terminal and the receiving terminal in direct communication are not consistent but have an intersection, the management device determines that the RAT used by the sending terminal and the receiving terminal in direct communication can only be selected in the intersection.

If the RAT supported by the sending terminal and the receiving terminal is only one, the sending terminal determines that the RAT supported by the sending terminal and the receiving terminal is used as the RAT used for direct communication between the sending terminal and the receiving terminal.

If there are multiple RATs commonly supported by the transmitting terminal and the receiving terminal, the transmitting terminal is used as a management device to select one RAT from the commonly supported RATs as the RAT used for direct communication between the transmitting terminal and the receiving terminal.

The specific selection modes are various, and are described as follows:

the selection mode is as follows: the management device fixedly selects one RAT from the commonly supported RATs;

the management device may fixedly select one of the RATs in the intersection, for example, the management device may select, in a fixed manner, the RAT used when the sending terminal and the receiving terminal perform direct communication in the RAT intersection according to the priority of the RAT. For example, the priority of the RAT is NR radio access technology, LTE radio access technology. The transmitting terminal fixedly selects NR in the intersection as the RAT used when the transmitting terminal and the receiving terminal carry out direct communication, and if no NR exists in the intersection, the transmitting terminal selects LTE as the RAT used when the transmitting terminal and the receiving terminal carry out direct communication.

And a second selection mode: the management equipment selects an RAT according to the direct communication interface load or the logic channel of the sending terminal and the receiving terminal;

the management equipment determines the RAT used when the sending terminal and the receiving terminal carry out direct communication according to the corresponding relation between the direct communication interface load and the RAT of the sending terminal and the receiving terminal; or

And the management equipment determines the RAT used when the sending terminal and the receiving terminal carry out direct communication according to the corresponding relation between the logical channel and the RAT of the sending terminal and the receiving terminal.

The relationship between the direct communication interface bearer and the corresponding RAT of the sending terminal and the receiving terminal and the relationship between the logical channel and the RAT can be determined by a higher layer in the terminal. Specifically, the higher layer refers to a protocol layer above an AS (Access Stratum), such AS a core network related protocol layer.

Taking the logical channel as an example:

for example, the RAT corresponding to the logical channel a of the transmitting terminal and the receiving terminal is LTE radio access technology, and the RAT corresponding to the logical channel B is NR radio access technology.

The management node determines the RAT used when the sending terminal and the receiving terminal perform direct communication according to the specific logical channels of the sending terminal and the receiving terminal.

The selection mode is three: the management equipment selects one RAT according to a data packet which is directly communicated by the sending terminal and the receiving terminal;

the management device may select a suitable RAT from the intersection based on the traffic characteristics of the direct communication, such as based on the QoS parameters.

Currently, there are two QoS parameters of the direct communication interface: PPPP (ProSe Priority Per Packet, Priority of each direct communication Packet) and PPPR (ProSe availability Per Packet, reliability of each direct communication Packet), which subsequently does not preclude the introduction of new QoS parameters, such as 5QI (5G QoS identifier) and the like.

When the management device aims to guarantee the QoS of the terminal, the management device may select the RAT used when the sending terminal and the receiving terminal perform direct communication according to the correspondence relationship between the QoS parameter corresponding to the data packet and the RAT.

For example, if the Qos parameter corresponding to the data packet of the sending terminal and the receiving terminal is PPPP value 1, the RAT used for the corresponding direct communication is LTE radio access technology; when the PPPP value is 2, the RAT used by the corresponding direct communication interface is the NR radio access technology.

If the management device is the sending terminal and the receiving terminal do not have the common supported RAT, the sending terminal and the receiving terminal do not carry out direct communication;

for example, the terminals performing direct communication in the communication group include a transmitting terminal a and a receiving terminal B. The sending terminal A is management equipment, and only supports the LTE wireless access technology; the receiving terminal B supports only the NR radio access technology.

The sending terminal a determines that the sending terminal a and the receiving terminal B do not have the common supported RAT, and the sending terminal a and the receiving terminal B do not perform direct communication.

After the sending terminal determines the RAT used for direct communication between itself and the receiving terminal in the communication group that needs to perform direct communication through the selection method, the sending terminal also needs to notify the receiving terminal of the determined RAT used for direct communication of the receiving terminal.

There are various ways for the sending terminal to notify the receiving terminal of the determined RAT, which are exemplified as follows:

the first notification mode is as follows: notifying through the relevant information of the opposite terminal discovery process;

and the sending terminal carries the determined RAT in a relevant message of an opposite terminal discovery process so as to inform the receiving terminal.

Correspondingly, the receiving terminal determines the RAT used for the direct communication notified by the sending terminal by obtaining the relevant message of the opposite terminal discovery process.

And a second notification mode: establishing process related message notification through unicast connection;

and the sending terminal carries the determined RAT in a related message of a unicast connection establishment process so as to inform the receiving terminal.

Correspondingly, the receiving terminal determines the RAT used for the direct communication notified by the sending terminal by acquiring the relevant message of the unicast connection establishment process.

In implementation, if the number of the receiving terminals is 1, the sending terminal notifies the determined RAT to the receiving terminals in a point-to-point manner;

if the number of the receiving terminals is not less than 2, the sending terminal can also inform the determined RAT to the receiving terminals in a broadcasting mode.

As shown in fig. 2, a flow chart of a complete method of a system when a direct communication sending terminal is used as a management device provided for the implementation of the present invention includes:

step 200, the receiving terminal B, C reports the RAT information supported by itself to the sending terminal a;

step 201, the sending terminal a determines the RAT used for direct communication between itself and the receiving terminal B, C according to the RAT information reported by itself and the receiving terminal B, C;

in step 202, the transmitting terminal a notifies the receiving terminal B of the RAT used for the direct communication and notifies the receiving terminal C of the RAT used for the direct communication.

Scheme II: the management device is a receiving terminal of direct communication;

taking a receiving terminal of direct communication as a management device as an example:

the method comprises the steps that a sending terminal and a receiving terminal which need to be in direct communication in a communication group determine RAT information supported by the sending terminal and the receiving terminal through self capability information, the sending terminal needs to report the RAT information supported by the sending terminal to the receiving terminal, the receiving terminal determines the RAT used when the sending terminal and the receiving terminal carry out direct communication, and the RAT is supported by the sending terminal and the receiving terminal together.

It should be noted that, in the first embodiment, a sending terminal of direct communication is taken as a management device, and a receiving terminal is taken as an opposite terminal of direct communication. When the reception of the direct communication is used as the management device in the second scheme, correspondingly, the opposite end of the direct communication in the second scheme is used as the sending terminal, and the specific execution manner of the management device and the opposite end of the direct communication in the direct communication process in the second scheme may refer to the specific execution manner of the management device and the opposite end of the direct communication in the first scheme, which is not described herein again.

The third scheme is as follows: the management equipment is head equipment of the communication group;

the group head device may be a transmitting terminal that performs direct communication or a receiving terminal that performs direct communication within a communication group or another terminal that does not perform direct communication.

The head-of-group device is a management terminal in the communication group, and when a terminal requests to join the communication group, the head-of-group device needs to report own capability information.

If the group head device serves as the management device, the specific execution manner of the management device may refer to the specific execution manner of the sending terminal in the first scheme and the receiving terminal in the second scheme, which is not described herein again.

It should be noted that, if the group head device is another terminal that does not perform direct communication, that is, if the management device is another terminal that does not perform direct communication, the management device needs to notify the sending terminal and the receiving terminal of the determined RAT used for performing direct communication between the sending terminal and the receiving terminal; and when the transmitting terminal and the receiving terminal do not have the commonly supported RAT, the management device informs that the transmitting terminal and the receiving terminal can not carry out direct communication.

Taking other terminals not performing direct communication in the communication group as management nodes, as shown in fig. 3, a flowchart of a complete method of the system when the group head device is taken as a management device according to the present invention is shown, where the group head device is a sending terminal a in the communication group, and the method includes:

step 300, a sending terminal A and a receiving terminal B report the RAT information supported by the sending terminal A and the receiving terminal B to the head-of-group equipment;

step 301, the group head device determines the RAT used for direct communication between the sending terminal a and the receiving terminal B according to the RAT information reported by the sending terminal a and the receiving terminal B;

step 302, the head of group device notifies the transmitting terminal a of the RAT used for the direct communication and notifies the receiving terminal B of the RAT used for the direct communication.

And the scheme is as follows: the management device is a network side device.

Taking a network side device as a management device as an example:

the method comprises the steps that a sending terminal and a receiving terminal which need to be in direct communication in a communication group determine RAT information supported by the sending terminal and the receiving terminal through capability information of the sending terminal and the receiving terminal, the RAT information supported by the sending terminal and the receiving terminal needs to be reported to network layer equipment, the RAT used when the sending terminal and the receiving terminal conduct direct communication is determined by network side equipment, and the RAT is supported by the sending terminal and the receiving terminal together.

The manner in which the sending terminal and the receiving terminal report the RAT information supported by themselves to the network side device may refer to the third reporting manner and the fourth reporting manner of the receiving terminal in the first scheme, and details are not described here.

And after the network side equipment acquires the RAT information reported by the sending terminal and the receiving terminal, determining the RATs supported by the sending terminal and the receiving terminal together according to the RAT information supported by the sending terminal and the receiving terminal, and selecting one RAT from the commonly supported RATs as the RAT used for direct communication between the sending terminal and the receiving terminal.

The method for determining the RAT supported by the sending terminal and the receiving terminal by the network side device according to the RAT information supported by the sending terminal and the receiving terminal may refer to an implementation manner of the management device in a specific communication scenario in the above-mentioned scheme, which is not described herein again.

It should be noted that, if the management device is the network-side device, and the sending terminal and the receiving terminal do not have a common supported RAT, the network-side device notifies that the sending terminal and the receiving terminal cannot perform direct communication.

The method for the network side device to select one RAT from the commonly supported RATs may also refer to a specific selection method of the management device in scheme one, which is not described herein again.

After the network side device determines RAT information used when a sending terminal and a receiving terminal which need to perform direct communication in a communication group perform direct communication through the selection method, the network side device also needs to notify the receiving terminal of the determined RAT used by the receiving terminal for direct communication and notify the sending terminal of the determined RAT used by the sending terminal for direct communication.

And the network side equipment informs the determined RAT used by the direct communication of the sending terminal to the sending terminal and informs the determined RAT used by the direct communication of the receiving terminal to the receiving terminal through RRC connection establishment or RRC connection reconfiguration information.

Correspondingly, the transmitting terminal and the receiving terminal determine the RAT used when the transmitting terminal and the receiving terminal perform direct communication by acquiring the RRC connection establishment or the RRC connection reconfiguration message.

In implementation, if the number of the terminals is 2, the network side device notifies the receiving terminal and the sending terminal in a point-to-point manner;

if the number of the terminals is larger than 2, the sending terminal can also inform the sending terminal and the receiving terminal in a broadcasting mode.

As shown in fig. 4, a flowchart of a complete method of a system when a network-side device is used as a management device provided for the implementation of the present invention includes:

step 400, the sending terminal A and the receiving terminal B report the RAT information supported by the sending terminal A and the receiving terminal B to the network side equipment;

step 401, a network side device determines an RAT used for direct communication between a sending terminal a and a receiving terminal B according to RAT information reported by the sending terminal a and the receiving terminal B;

in step 402, the network side device notifies the transmitting terminal a of the RAT used for the direct communication and notifies the receiving terminal B of the RAT used for the direct communication.

Based on the same inventive concept, the embodiment of the present invention further provides a management device for direct communication, and since the device is the management device in the system for direct communication in the embodiment of the present invention, and the principle of the device to solve the problem is similar to that of the method, the implementation of the device may refer to the implementation of the method, and repeated details are omitted.

As shown in fig. 5, a first management device for direct communication according to an embodiment of the present invention includes a processor 500, a memory 501, and a transceiver 502;

the processor 500 is responsible for managing the bus architecture and general processing, and the memory 501 may store data used by the processor 500 in performing operations. The transceiver 502 is used to receive and transmit data under the control of the processor 500.

The bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 500 and various circuits of memory represented by memory 501 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The processor 500 is responsible for managing the bus architecture and general processing, and the memory 501 may store data used by the processor 500 in performing operations.

The processes disclosed in the embodiments of the present invention may be applied to the processor 500, or implemented by the processor 500. In implementation, the steps of the signal processing flow may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 500. The processor 500 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof that may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 501, and the processor 500 reads the information in the memory 501, and completes the steps of the signal processing flow in combination with the hardware thereof.

Specifically, the processor 500 is configured to read the program in the memory 501 and execute:

Optionally, the management device is the sending terminal or the receiving terminal; or the management equipment is head equipment of a communication group; or the management device is a network side device.

Optionally, if the management device is the sending terminal or the receiving terminal, the processor 500 is specifically configured to:

Optionally, if the management device is a network side device, the processor is specifically configured to:

Optionally, the processor 500 is further configured to:

Optionally, the processor 500 is specifically configured to:

Optionally, the management device is one of the sending terminal, the receiving terminal, and a group head device, and the processor 500 is specifically configured to:

Optionally, the processor 500 is specifically configured to:

Optionally, the processor 500 is further configured to:

Based on the same inventive concept, as shown in fig. 6, a first direct communication device according to an embodiment of the present invention includes a processor 600, a memory 601, and a transceiver 602;

the processor 600 is responsible for managing the bus architecture and general processing, and the memory 601 may store data used by the processor 600 in performing operations. The transceiver 602 is used to receive and transmit data under the control of the processor 600.

The bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 600 and various circuits of memory represented by memory 601 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The processor 600 is responsible for managing the bus architecture and general processing, and the memory 601 may store data used by the processor 600 in performing operations.

The processes disclosed in the embodiments of the present invention may be applied to the processor 600, or implemented by the processor 600. In implementation, the steps of the signal processing flow may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 600. The processor 600 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof that may implement or perform the methods, steps or logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 601, and the processor 600 reads the information in the memory 601 and completes the steps of the signal processing flow in combination with the hardware thereof.

Specifically, the processor 600 is configured to read the program in the memory 601 and execute:

reporting RAT information supported by the management equipment to the management equipment through a transceiver; receiving, by a transceiver, a RAT determined by the management device to be used for direct communication between the first transmission terminal and a second transmission terminal; communicating directly with the second transmitting terminal via a transceiver in accordance with the RAT.

Optionally, the number of the second transmission terminals is one or more.

Optionally, the processor 600 is specifically configured to:

Optionally, the processor 600 is further configured to:

Optionally, the management device is a sending terminal, and the processor 600 is further configured to:

Optionally, the processor 600 is specifically configured to:

Based on the same idea, as shown in fig. 7, a schematic structural diagram of another management device for direct communication according to an embodiment of the present invention includes: determination module 700, processing module 701:

the determination module 700: determining RAT information supported by a sending terminal and a receiving terminal which need to carry out direct communication in a communication group;

the processing module 701: and the RAT used for direct communication between the sending terminal and the receiving terminal is determined according to the RAT information supported by the sending terminal and the receiving terminal.

Optionally, if the management device is the sending terminal or the receiving terminal, the processing module 701 is specifically configured to:

Optionally, if the management device is a network side device, the processing module 701 is specifically configured to:

Optionally, the processing module 701 is further configured to:

Optionally, the processing module 701 is specifically configured to:

Optionally, the management device is one of the sending terminal, the receiving terminal, and the group head device, and the processing module 701 is specifically configured to:

Optionally, the processing module 701 is specifically configured to:

Optionally, the processing module 701 is further configured to:

Based on the same inventive concept, as shown in fig. 8, an embodiment of the present invention provides a schematic structural diagram of a first transmission terminal for direct communication, where the terminal includes: reporting module 800, receiving module 801 and communication module 802:

a reporting module 800: the management equipment is used for reporting RAT information supported by the management equipment to the management equipment;

the receiving module 801: the RAT is used for receiving the RAT which is determined by the management equipment and is used by the first transmission terminal and the second transmission terminal for direct communication;

the communication module 802: for direct communication with the second transmitting terminal in accordance with the RAT.

Optionally, the receiving module 801 is specifically configured to:

Optionally, the communication module 802 is further configured to:

Optionally, the reporting module 800 is specifically configured to:

Optionally, the communication module 802 is specifically configured to:

Based on the same inventive concept, the embodiment of the present invention further provides a method for direct communication, and since the method corresponds to the method for managing devices for direct communication in the embodiment of the present invention, and the principle of the method for solving the problem is similar to that of the device, the implementation of the method can refer to the implementation of the terminal, and repeated details are not repeated.

As shown in fig. 9, a flowchart of a method for direct communication according to an embodiment of the present invention specifically includes the following steps:

step 900, the management device determines RAT information supported by a sending terminal and a receiving terminal which need to perform direct communication in a communication group;

step 901, the management device determines, according to RAT information supported by the sending terminal and the receiving terminal, a RAT used for direct communication between the sending terminal and the receiving terminal, so that the sending terminal and the receiving terminal use the same RAT for direct communication.

Optionally, the management device is the sending terminal or the receiving terminal, and the determining, by the management device, RAT information supported by the sending terminal and the receiving terminal that need to perform direct communication in the communication group includes:

Optionally, the management device is a network side device, and the determining, by the management device, RAT information supported by a sending terminal and a receiving terminal that need to perform direct communication in a communication group includes:

and the management equipment receives the RAT information supported by the management equipment through the reporting process of the UE capability or the independent reporting process of the terminal in the communication group.

Optionally, after the management device determines RAT information supported by a sending terminal and a receiving terminal that need to perform direct communication in a communication group, the method further includes:

Optionally, the notifying, by the management device, the determined RAT used for the direct communication of the receiving terminal to the receiving terminal includes:

Optionally, the notifying, by the management device, the sending terminal of the determined RAT used for the direct communication by the sending terminal and the receiving terminal of the determined RAT used for the direct communication by the receiving terminal includes:

And if the management device is a network side device, the management device notifies the determined RAT used by the direct communication of the sending terminal to the sending terminal and notifies the determined RAT used by the direct communication of the receiving terminal to the receiving terminal through RRC connection establishment or RRC connection reconfiguration message.

Optionally, the management device is one of the sending terminal, the receiving terminal, and a group head device;

Optionally, the determining, by the management device, the RAT used for direct communication between the sending terminal and the receiving terminal includes:

Optionally, the using, by the management device, one of the RATs commonly supported by the sending terminal and the receiving terminal as the RAT used for the sending terminal and the receiving terminal to perform direct communication includes:

Optionally, the selecting, by the management device, one RAT from the commonly supported RATs as a RAT used for direct communication between the sending terminal and the receiving terminal includes:

Optionally, if the management device is the sending terminal and the receiving terminal do not have a common supported RAT, the management device and the receiving terminal do not perform direct communication; or

As shown in fig. 10, a flowchart of a method for direct communication according to an embodiment of the present invention specifically includes the following steps:

step 1000, the first transmission terminal reports the RAT information supported by itself to the management device;

1001, the first transmission terminal receiving the RAT determined by the management device and used for direct communication between the first transmission terminal and a second transmission terminal;

step 1002, the first transmission terminal directly communicates with the second transmission terminal according to the RAT.

Optionally, the number of the second transmission terminals is one or more.

Optionally, the receiving, by the first transmission terminal, the RAT used for direct communication between the first transmission terminal and the second transmission terminal, which is determined by the management device, includes:

Optionally, if the first transmission terminal is the sending terminal, and the first transmission terminal determines that the notification that the management device prohibits the direct communication is received, the first transmission terminal does not perform the direct communication with the second transmission terminal.

Optionally, the management device is a sending terminal;

Optionally, the management device is the sending terminal or the receiving terminal; the reporting, by the first transmission terminal, RAT information supported by the first transmission terminal to a management device includes:

Optionally, the directly communicating between the first transmission terminal and the second transmission terminal according to the RAT includes:

Embodiments of the present invention also include a direct communication computer-storable medium having stored thereon a computer program that, when executed by a processor, performs the steps of the method described above with respect to fig. 9 or performs the steps of the method described above with respect to fig. 10.

The present application is described above with reference to block diagrams and/or flowchart illustrations of methods, apparatus (systems) and/or computer program products according to embodiments of the application. It will be understood that one block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, and/or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer and/or other programmable data processing apparatus, create means for implementing the functions/acts specified in the block diagrams and/or flowchart block or blocks.

Accordingly, the subject application may also be embodied in hardware and/or in software (including firmware, resident software, micro-code, etc.). Furthermore, the present application may take the form of a computer program product on a computer-usable or computer-readable storage medium having computer-usable or computer-readable program code embodied in the medium for use by or in connection with an instruction execution system. In the context of this application, a computer-usable or computer-readable medium may be any medium that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A method of direct communication, the method comprising:

the management equipment determines the Radio Access Technology (RAT) information supported by a sending terminal and a receiving terminal which need to be directly communicated in a communication group;

and the management equipment determines the RAT used by the sending terminal and the receiving terminal for direct communication according to the RAT information supported by the sending terminal and the receiving terminal, so that the sending terminal and the receiving terminal use the same RAT for direct communication.

2. The method of claim 1, wherein the management device is the sending terminal or the receiving terminal; or

The management equipment is head equipment of a communication group; or

The management device is a network side device.

3. The method of claim 2, wherein the management device is the transmitting terminal or the receiving terminal;

the management device determines RAT information supported by a transmitting terminal and a receiving terminal which need to perform direct communication in a communication group, and the RAT information includes:

4. The method of claim 2, wherein the management device is a network-side device;

the management equipment receives the self-supported RAT information reported by the terminals in the communication group through the UE capability reporting process or the independent reporting process of the user terminal.

5. The method of claim 2, wherein after the management device determines RAT information supported by the transmitting terminal and the receiving terminal in the communication group that need to perform direct communication, the method further comprises:

6. The method of claim 2, wherein the notifying, by the management device, the determined RAT used by the receiving terminal for direct communication to the receiving terminal comprises:

7. The method of claim 2, wherein the managing device notifying the sending terminal of the determined RAT used by the sending terminal for direct communication and notifying the receiving terminal of the determined RAT used by the receiving terminal for direct communication comprises:

And if the management device is a network side device, the management device notifies the determined RAT used by the direct communication of the sending terminal to the sending terminal and notifies the determined RAT used by the direct communication of the receiving terminal to the receiving terminal through a Radio Resource Control (RRC) connection establishment or RRC connection reconfiguration message.

8. The method of claim 2, wherein the management device is one of the transmitting terminal, the receiving terminal, and a head of group device;

9. The method of any one of claims 2 to 8, wherein the determining, by the management device, the RAT used for direct communication between the sending terminal and the receiving terminal comprises:

10. The method of claim 9, wherein the managing device using one of the RATs commonly supported by the transmitting terminal and the receiving terminal as the RAT used for direct communication between the transmitting terminal and the receiving terminal comprises:

11. The method of claim 9, wherein the managing device selecting one RAT among the commonly supported RATs as the RAT used for direct communication by the sending terminal and the receiving terminal comprises:

12. The method of claim 9, further comprising:

if the management device is the sending terminal and the receiving terminal do not have the common supported RAT, the management device and the receiving terminal do not carry out direct communication; or

13. A method of direct communication, the method comprising:

the first transmission terminal reports the RAT information supported by the first transmission terminal to the management equipment;

the first transmission terminal receives the RAT which is determined by the management equipment and is used for direct communication between the first transmission terminal and a second transmission terminal;

the first transmission terminal communicates directly with the second transmission terminal according to the RAT.

14. The method of claim 13, wherein the second transmission terminal is one or more.

15. The method of claim 13, wherein the first transmission terminal receiving the RAT determined by the management device to be used by the first transmission terminal for direct communication with the second transmission terminal comprises:

16. The method of claim 13, further comprising:

and if the first transmission terminal is the sending terminal and the first transmission terminal determines to receive the notification that the direct communication of the management equipment is forbidden, the first transmission terminal does not carry out direct communication with the second transmission terminal.

17. The method of claim 13, further comprising: the management device is a sending terminal;

18. The method of claim 13, wherein the management device is the transmitting terminal or the receiving terminal; the reporting, by the first transmission terminal, RAT information supported by the first transmission terminal to a management device includes:

19. The method of any of claims 13 to 18, wherein the first transmission terminal communicates directly with the second transmission terminal according to the RAT, comprising:

20. A management device for direct communication, the device comprising: a processor, a memory, and a transceiver;

21. The apparatus according to claim 20, wherein the management apparatus is the transmitting terminal or the receiving terminal; or

The management equipment is head equipment of a communication group; or

The management device is a network side device.

22. The device of claim 21, wherein if the management device is the sending terminal or the receiving terminal, the processor is specifically configured to:

23. The device of claim 21, wherein if the management device is a network side device, the processor is specifically configured to:

24. The device of claim 21, wherein the processor is further configured to:

25. The device of claim 21, wherein the processor is specifically configured to:

26. The device of claim 21, wherein the processor is specifically configured to:

27. The device of claim 21, wherein the management device is one of the sending terminal, the receiving terminal, and a head-of-group device, and wherein the processor is specifically configured to:

28. The apparatus of any of claims 21 to 27, wherein the processor is specifically configured to:

29. The device of claim 28, wherein the processor is specifically configured to:

30. The device of claim 28, wherein the processor is specifically configured to:

31. The device of claim 28, wherein the processor is further configured to:

32. A first transmission terminal for direct communication, the terminal comprising: a processor, a memory, and a transceiver;

33. The terminal of claim 32, wherein the second transmission terminal is one or more.

34. The terminal of claim 32, wherein the processor is further configured to:

35. The terminal of claim 32, wherein the processor is further configured to:

36. The terminal of claim 32, wherein the managing device is a transmitting terminal, the processor further configured to:

37. The terminal of claim 32, wherein the processor is further configured to:

38. The terminal of any of claims 32 to 37, wherein the processor is specifically configured to:

39. A management device for direct communication, the device comprising:

40. A first transmission terminal for direct communication, the terminal comprising:

41. A computer-readable medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 12 or 13 to 19.