CN113965994A

CN113965994A - Direct communication starting control method and related equipment

Info

Publication number: CN113965994A
Application number: CN202010714295.4A
Authority: CN
Inventors: 王文; 谢振华; 郑倩; 柯小婉; 张艳霞
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2020-07-21
Filing date: 2020-07-21
Publication date: 2022-01-21
Also published as: WO2022017360A1

Abstract

The application discloses a direct communication starting control method and related equipment. The method comprises the following steps: sending a paging message at a target paging occasion; the paging message is used for indicating the terminal to start direct communication, and the target paging occasion is a preset paging occasion or a paging occasion determined according to preset parameters. According to the embodiment of the application, the network equipment informs the corresponding terminal to start direct communication, and after the terminal starts the direct communication, the corresponding direct communication link can be established and the service data can be transmitted through the direct communication link. Therefore, the time efficiency of service data transmission of direct communication is improved.

Description

Direct communication starting control method and related equipment

Technical Field

The present application belongs to the field of communication technologies, and in particular, to a direct communication start control method and related devices.

Background

It is known that battery power and wireless sensing capabilities are limited, making it impossible for Pedestrian User Equipment (PUE) to send and receive V2X messages on the PC5 interface at a period like that of a Vehicle User Equipment (VUE). In order to enable reduction of power consumption of the PUE, a longer period of Discontinuous Reception (DRX) is generally configured for direct communication. This results in a less time-efficient transmission of traffic data for direct communication.

Disclosure of Invention

An object of the embodiments of the present application is to provide a direct communication start control method and related devices, which can solve the problem of poor timeliness of service data transmission of direct communication.

In order to solve the technical problem, the present application is implemented as follows:

in a first aspect, a direct communication initiation control method is provided, which is applied to a network device, and includes:

sending a paging message at a target paging occasion;

the paging message is used for indicating the terminal to start direct communication, and the target paging occasion is a preset paging occasion or a paging occasion determined according to preset parameters.

In a second aspect, a direct communication initiation control method is provided, which is applied to a network device, and includes:

receiving a request message, wherein the request message is used for requesting a network device to inform a terminal to start direct communication;

and sending a notification message to the first terminal according to the request message, wherein the notification message is used for notifying the first terminal to start the direct communication.

In a third aspect, a direct communication start control method is provided, which is applied to a terminal and includes:

monitoring paging messages at a target paging occasion;

In a fourth aspect, a direct communication start control method is provided, which is applied to a first terminal, and includes:

receiving a notification message sent by network equipment, wherein the notification message is used for notifying the first terminal to start the direct communication;

and starting the direct communication according to the notification message.

In a fifth aspect, a direct communication start control method is provided, which is applied to a second terminal, and is characterized by including:

and sending a request message, wherein the request message is used for requesting the network equipment to inform the terminal to start direct communication.

In a sixth aspect, a direct communication start control method is provided, which is applied to an application server, and includes:

In a seventh aspect, a direct communication start control apparatus is provided, including:

a first sending module, configured to send a paging message at a target paging occasion;

In an eighth aspect, there is provided a direct communication start control device including:

a second receiving module, configured to receive a request message, where the request message is used to request a network device to notify a terminal to start direct communication;

and a second sending module, configured to send a notification message to the first terminal according to the request message, where the notification message is used to notify the first terminal to start the direct communication.

In a ninth aspect, there is provided a direct communication start control apparatus comprising:

a third receiving module for monitoring the paging message at the target paging occasion;

In a tenth aspect, there is provided a direct communication start control device including:

a fourth receiving module, configured to receive a notification message sent by a network device, where the notification message is used to notify the first terminal to start the direct communication;

and the control module is used for starting the direct communication according to the notification message.

In an eleventh aspect, there is provided a direct communication start control apparatus including:

and a fifth sending module, configured to send a request message, where the request message is used to request a network device to notify a terminal to start direct communication.

In a twelfth aspect, a network device is provided, comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, which when executed by the processor, implement the steps of the method according to the first and second aspects.

In a thirteenth aspect, there is provided a terminal comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method according to the third, fourth and fifth aspects.

In a fourteenth aspect, a server is provided, comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method according to the sixth aspect.

In a fifteenth aspect, a readable storage medium is provided, on which a program or instructions are stored, which program or instructions, when executed by a processor, carry out the steps of the method according to the first to sixth aspects.

In a sixteenth aspect, an embodiment of the present application provides a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a network device program or instructions to implement the method according to the first and second aspects.

According to the embodiment of the application, the network equipment informs the corresponding terminal to start direct communication, and after the terminal starts the direct communication, the corresponding direct communication link can be established and the service data can be transmitted through the direct communication link. Therefore, the time efficiency of service data transmission of direct communication is improved.

Drawings

Fig. 1 is a block diagram of a network system to which an embodiment of the present application is applicable;

fig. 2 is a flowchart of a direct communication initiation control method according to an embodiment of the present application;

fig. 3 is a second flowchart of a direct communication initiation control method according to an embodiment of the present application;

fig. 4 is a third flowchart of a direct communication initiation control method according to an embodiment of the present application;

fig. 5 is a fourth flowchart of a direct communication initiation control method according to an embodiment of the present application;

fig. 6 is a fifth flowchart of a direct communication initiation control method according to an embodiment of the present application;

fig. 7 is a sixth flowchart of a direct communication initiation control method according to an embodiment of the present application;

fig. 8 is a seventh flowchart of a direct communication initiation control method according to an embodiment of the present application;

fig. 9 is one of the structural diagrams of a direct communication initiating apparatus according to an embodiment of the present application;

fig. 10 is a second structural diagram of a direct communication initiating apparatus according to an embodiment of the present application;

fig. 11 is a third structural diagram of a direct communication initiating apparatus according to an embodiment of the present application;

fig. 12 is a fourth structural diagram of a direct communication initiating apparatus according to an embodiment of the present application;

fig. 13 is a fifth configuration diagram of a direct communication initiating apparatus according to an embodiment of the present application;

fig. 14 is a block diagram of a communication device according to an embodiment of the present application;

fig. 15 is a block diagram of a communication device according to an embodiment of the present application;

fig. 16 is a block diagram of an application server according to an embodiment of the present application;

fig. 17 is a block diagram of a terminal according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. 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 application.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used are interchangeable under appropriate circumstances such that embodiments of the application can be practiced in sequences other than those illustrated or described herein, and the terms "first" and "second" used herein generally do not denote any order, nor do they denote any order, for example, the first object may be one or more. In addition, "and/or" in the specification and the claims means at least one of connected objects, and a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

It is noted that the techniques described in the embodiments of the present application are not limited to Long Term Evolution (LTE)/LTE Evolution (LTE-Advanced) systems, but may also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described techniques can be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies. However, the following description describes a New Radio (NR) system for purposes of example, and NR terminology is used in much of the description below, although the techniques may also be applied to applications other than NR system applications, such as 6th Generation (6G) communication systems.

Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. The wireless communication system includes a terminal 11 and a network device 12. Wherein, the terminal 11 may also be called as a terminal Device or a User Equipment (UE), the terminal 11 may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer) or a notebook Computer, a Personal Digital Assistant (PDA), a palmtop Computer, a netbook, a super-Mobile Personal Computer (UMPC), a Mobile Internet Device (MID), a Wearable Device (Wearable Device) or a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), and other terminal side devices, the Wearable Device includes: bracelets, earphones, glasses and the like. It should be noted that the embodiment of the present application does not limit the specific type of the terminal 11. The network device 12 may be a Base Station or a core network, wherein the Base Station may be referred to as a node B, an evolved node B, an access Point, a Base Transceiver Station (BTS), a radio Base Station, a radio Transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a node B, an evolved node B (eNB), a home node B, a home evolved node B, a WLAN access Point, a WiFi node, a Transmit Receiving Point (TRP), or some other suitable terminology in the field, as long as the same technical effect is achieved, the Base Station is not limited to a specific technical vocabulary, and it should be noted that only the Base Station in the NR system is taken as an example in the present embodiment, but the specific type of the Base Station is not limited.

The direct communication start control method provided by the embodiment of the present application is described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.

Referring to fig. 2, fig. 2 is a flowchart of a direct communication initiation control method provided in an embodiment of the present application, where the method is applied to a network device, and as shown in fig. 2, the method includes the following steps:

step 201, sending paging message on the target Paging Occasion (PO);

In the embodiment of the present application, the terminal may be understood as a PUE or other UE having short-range communication or direct communication. A target paging occasion may first be determined before sending a paging message. For example, in an embodiment, the preset paging occasion may be understood as a protocol that appoints a specific paging occasion, and the determining the target paging occasion may be understood as: and determining a preset paging occasion agreed by the protocol. In another embodiment, determining the target paging occasion may be understood as determining the paging occasion according to preset parameters, that is, determining the obtained paging occasion according to a certain specific rule.

The network device may send the paging message at the target paging occasion, and the corresponding terminal may listen to the paging message at the target paging occasion. After the terminal monitors the paging message, the terminal can start direct communication.

The embodiment of the application sends the paging message on the target paging occasion; the paging message is used for indicating the terminal to start direct communication, and the target paging occasion is a preset paging occasion or a paging occasion determined according to preset parameters. Thus, the network device informs the corresponding terminal to start the direct communication through the paging message, and after the terminal starts the direct communication, the corresponding direct communication link can be established and the service data can be transmitted through the direct communication link. Therefore, the time efficiency of service data transmission of direct communication is improved.

It should be understood that the preset parameter may be specifically set according to actual situations, for example, in an embodiment, the preset parameter may include a service type (service type), an application identifier (application ID), or a Temporary Mobile Group Identifier (TMGI).

That is to say, in this embodiment, the PO may be determined according to the service type, the application identifier, and the TMGI.

Optionally, in an embodiment, the paging message carries at least one of the preset parameter and the paging area information.

In this embodiment, the paging message carries the preset parameters, which may be convenient for the terminal to understand that the direct communication is started based on the specific preset parameters, for example, the direct communication is started for a specified service type, or the direct communication is started for a specified application identifier, or the direct communication is started for a specified TMGI.

The paging area information carried in the paging message can indicate that the area corresponding to the paging area information is the effective area of the paging message, and only the terminal in the designated paging area is controlled to start direct communication, so that the accuracy of the paging control of the network equipment can be improved, and the phenomenon that the terminals in other areas except the area corresponding to the paging area information start direct communication by mistake to cause electric quantity loss is avoided.

Optionally, after the sending of the paging message on the target paging occasion, the method further includes:

and receiving a first response message sent by the terminal, wherein the first response message is used for indicating that the terminal starts the direct communication.

In the embodiment of the application, after the terminal receives the paging message, the direct communication may be started, and after the direct communication is started, a first response message is replied to the network device to confirm the terminal and start the direct communication. In an embodiment, the first response message carries a first Identifier of the terminal, where the first Identifier includes at least one of an Application layer Identifier (Application layer ID), a Subscription encrypted Identifier (SUCI), and a global Unique Temporary terminal Identifier (GUTI).

Optionally, in an embodiment, the paging message is sent within a target area, and the target area is determined by a notification area provided by an application server.

In this embodiment, the application service may send a request to the network device to request the network device to notify the terminal to start direct communication. So that the terminal can start direct communication to transmit the service data corresponding to the application server in a direct communication mode. The server may also provide a notification area so that the network device can notify the terminal of the designated area to initiate direct communication.

It should be understood that the notification area provided by the application server is a notification area in which the application server needs to notify the network side to start direct communication, and the network device maps the area provided by the application server to the area identified by the network device.

It should be noted that, after receiving the paging message, the terminal may change the current DRX mode.

Optionally, changing the current DRX mode comprises any one of:

mode 1, under the condition that the current time is in the dormant state of the current DRX mode, the dormant state is adjusted to an active state;

mode 2, when the current DRX mode is the first DRX mode, the current DRX mode is changed into the second DRX mode.

For the above mode 1, the sleep state may be understood as an Off state, and the active state may be understood as an On state, assuming that the DRX mode is in an Off state at this time, and Off is turned On for a certain period of time.

With respect to the above mode 2, the above-mentioned first DRX mode may be understood as a DRX mode that always keeps silent, and the above-mentioned second DRX mode may be understood as a DRX mode that has a certain period of the switch PC5 interface to listen and transmit. In an embodiment, the second DRX mode may be a DRX mode mapped by a traffic type or an application identity or a temporary group identity.

In this embodiment, the DRX mode may be referred to as DRX pattern, or may be referred to as DRX Cycle. Alternatively, different DRX modes may be understood as DRX with different periods, wherein a first DRX mode is changed to a second DRX mode, which may be understood as changing from one DRX to another DRX, wherein the period of the DRX before the change is different from the changed DRX period.

It should be understood that changing the current DRX mode refers to handling of DRX for direct communication, and in the embodiment of the present application, the direct communication may be PC5 interface communication or sidelink (sidelink) communication.

Further, referring to fig. 3, an embodiment of the present application further provides another direct communication initiation control method, applied to a network device, including:

step 301, receiving a request message, where the request message is used to request a network device to notify a terminal to start direct communication;

step 302, according to the request message, sending a notification message to the first terminal, where the notification message is used to notify the first terminal to start the direct communication.

In this embodiment of the application, the receiving request message may be sent by the second terminal, or may be sent by the application server. The first terminal may be understood as a PUE or other UE with the same function. The second terminal may be understood as any type of UE, for example, PUE or VUE, etc., which are not further limited herein.

It should be appreciated that in one embodiment, the second terminal may send the request message directly to the network device. For example, the second terminal may send the request message to an Access and Mobility Management Function (AMF), or may send the request message to a Radio Access Network (RAN).

In another embodiment, the second terminal may send a request message to the application server, which forwards the request message. The Application server may be understood as an Application Function (AF). For example, in this embodiment, the request message may be sent to the AF through an application layer message. The AF sends a service request to a Policy Control Function entity (PCF) through a Network Exposure Function (NEF), where the service request is used to request a core Network to trigger a specific service to start a PC5 interface communication.

In yet another embodiment, the request message may also be sent to the network device autonomously by the application server.

Optionally, the request message may carry at least one of a service type, an application identifier, a temporary mobile group identifier, and a communication type of direct communication. When the direct communication is PC5 communication, the communication type of the direct communication may be understood as a PC5 interface communication type, and may be, for example, a communication type such as broadcast, unicast, or multicast.

In the embodiment of the application, the network device receives the request message, and sends the notification message to notify the first terminal to start direct communication based on the request message. In this way, the first terminal starts the direct communication after receiving the notification message, and can establish a corresponding direct communication link and transmit the service data through the direct communication link. Therefore, the time efficiency of service data transmission of direct communication is improved.

Optionally, the notification message includes at least one of: Non-Access Stratum (NAS) messages, Radio Resource Control (RRC) messages, and paging messages.

In an embodiment, for a first terminal in a connected state, the initiation of direct communication may be notified through NAS information or an RRC message; for a first terminal in the disconnected state, the direct communication may be initiated through a paging message notification.

Optionally, when the notification message includes the paging message, sending the notification message to the first terminal according to the request message includes:

sending a paging message at a target paging occasion;

the paging message is used for indicating the first terminal to start direct communication, and the target paging occasion is a preset paging occasion or a paging occasion determined according to preset parameters.

In the embodiment of the present application, before sending the paging message, a target paging occasion may be determined first. For example, in an embodiment, the preset paging occasion may be understood as a protocol that appoints a specific paging occasion, and the determining the target paging occasion may be understood as: and determining a preset paging occasion agreed by the protocol. In another embodiment, determining the target paging occasion may be understood as determining the paging occasion according to preset parameters, that is, determining the obtained paging occasion according to a certain specific rule.

The network device may send the paging message at the target paging occasion, and the corresponding first terminal may listen to the paging message at the target paging occasion. The first terminal may initiate direct communication upon hearing the paging message. In order to save power, terminals that have already started direct communication may no longer listen for paging messages of this type after receiving them.

In one embodiment, the paging message is sent within a target area, the target area being determined by at least one of:

a location of a second terminal, the second terminal being a terminal that sends the request message;

notification area provided by the application server.

In the embodiment of the application, the area where the second terminal is located may be determined based on the position of the second terminal, and the target area may be determined based on the area. Or determining information of the nearby first terminal based on the position of the second terminal, and determining which first terminals need to be notified to start direct communication based on the information of the nearby first terminal and subscription information of the second terminal or the context of the second terminal, thereby determining the target area.

In another embodiment, the target area may also be determined based on a notification area provided by the server. It should be understood that the notification area provided by the application server is a notification area in which the application server needs to notify the network side to start direct communication, and the network device maps the area provided by the application server to the area identified by the network device. It should be understood that, when the application server provides the notification area, the notification area may be provided in the request message, or may be provided in another message, which is not further limited herein.

Furthermore, the target area can be determined by combining the position of the second terminal and the notification area provided by the application server. For example, a first area determined for a notification area provided by the application server and a target area selected according to a certain rule based on a second area determined based on the location of the second terminal. The rule may be a union or an intersection, etc., and is not further limited herein.

Optionally, the preset parameter includes a service type, an application identifier, or a temporary mobile group identifier.

Optionally, the paging message carries at least one of the preset parameter and paging area information.

Optionally, after sending the notification message to the first terminal according to the request message, the method further includes:

and receiving a first response message sent by the first terminal, wherein the first response message is used for indicating that the first terminal has started the direct communication.

In this embodiment, after the first terminal receives the paging message, the direct communication may be started, and after the direct communication is started, a first response message is replied to the network device to confirm the first terminal and start the direct communication. In an embodiment, the first response message carries a first identifier of the first terminal, where the first identifier includes at least one of an application layer identifier, a subscription encryption identifier, and a globally unique temporary terminal identifier.

Further, in an embodiment, in a case that the reception request message is sent by a second terminal, after receiving a first response message sent by the first terminal, the method further includes:

and sending a second response message to the second terminal, wherein the second response message carries the first identifier.

In the embodiment of the application, the network device notifies the first identifier of the first terminal through the second response message, so that the second terminal can know that the direct communication is established with the specific first terminal, and the reliability of data transmission is improved.

It should be noted that, after receiving the paging message, the first terminal may change the current DRX mode.

Optionally, changing the current DRX mode comprises any one of:

It should be understood that changing the current DRX mode refers to handling DRX for direct communication, and in the embodiment of the present application, the direct communication may be PC5 interface communication or sidelink communication.

It should be noted that the second terminal may directly start direct communication when transmitting the request message.

For better understanding of the present application, a detailed description of a specific implementation process of the present application is provided below with reference to fig. 4 to 6.

In the first embodiment, receiving the request of the second terminal, the AMF starts the PC5 interface communication indication by sending a specific service. As shown in fig. 4, the method comprises the following steps:

in step 401, the terminal (UE-1, PUE-1 and PUE-2) obtains the PC5 communication authorization and parameter configuration of the network device, optionally, the UE-1 may be a VUE or PUE or other UE with PC5 communication capability.

Step 402, UE-1 sends a first request to AMF, where the first request is used to request AMF to trigger PC5 interface communication start notification, and the request carries service type and PC5 interface communication type.

In step 403, the AMF determines which PUEs to notify to start the PC5 interface communication based on the subscription information of the UE-1 or the context of the UE-1 and the information of the PUEs adjacent to the UE-1. It should be appreciated that this step 603 is an optional step.

In step 404, for the PUE in the connected state, for example, PUE-1 is in the connected state. And the AMF informs the PUE-1 to start the PC5 interface communication through NAS information, wherein the NAS information carries the service type.

In step 405, for the PUE in the idle state, for example, PUE-2 is in the idle state. The AMF informs the PUE-2 to start the PC5 interface communication through the paging message. Optionally, the AMF calculates a paging occase through the service type, or the AMF sends a paging on a specific paging occase, where the paging message carries the service type.

Optionally, the paging message may also carry a paging area (paging area).

Optionally, for the PUE-1 in the connected state, the PUE-1 may also be notified to start the PC5 interface communication through the paging message;

alternatively, the AMF can determine the area of the paging based on the location of the UE-1 and the range of the service type communicated on the PC5 interface, and the AMF can determine the area of the paging by determining the PUE adjacent to the UE-1 to the location control function device.

Optionally, the DRX mode is changed after receiving the network paging. Changing the DRX mode may include any one of:

if the DRX mode is in an Off state at the moment, turning Off to On and lasting for a period of time;

and converting the original DRX mode into another DRX mode, such as converting the original DRX mode which is kept silent all the time into the DRX mode which has the interface of the switch PC5 with a certain period to listen and transmit. Optionally, a service may correspond to a DRX mode, and the UE starts the corresponding DRX mode based on the service identifier.

Optionally, the PUE determines whether the mobile terminal is currently located in a paging area based on the paging area, where the paging area is a paging area determined by the network side.

At step 406, PUE-1 and PUE-2 initiate a PC5 interface communication after receiving notification from the AMF, wherein the PC5 interface communication may be a send (answering) or a listen (listening). Alternatively, PUE-1 and PUE-2 may not listen to the paging message of the above traffic type if they initiate PC5 interface communication.

Optionally, in an embodiment, the PUE-1 and PUE-2 reply responses (responses) are sent to the AMF to confirm that the PC5 interface communication is started, and the UE identity may be carried in the reply message. The UE identity may be an application layer identity, a sui, and the like of the UE.

Optionally, the AMF sends a response message to the UE-1, where the message may carry the UE identity, so that the UE-1 may establish PC5 interface communication with a specific PUE.

Optionally, UE-1 may initiate the PC5 interface communication mechanism after sending the first request.

In the second embodiment, receiving the request from the second terminal, the RAN starts the PC5 interface communication indication by sending a specific service. As shown in fig. 5, the method comprises the following steps:

in step 501, the terminal (UE-1, PUE-1 and PUE-2) obtains PC5 communication authorization and parameter configuration of the network device, optionally, the UE-1 may be a VUE or PUE or other UE with PC5 communication capability.

Step 502, UE-1 sends a first request to RAN, where the first request is used to request RAN to trigger PC5 interface communication start notification, and the request carries a service type and a PC5 interface communication type.

In step 503, after receiving the request, the RAN notifies PUE-1 and PUE-2 to initiate PC5 interface communication via RAN paging message. Optionally, the RAN may calculate a paging occasion through the service type, or the RAN sends a paging on a specific paging occasion, where the paging message carries the service type.

Optionally, the paging message may also carry a paging area.

At step 504, PUE-1 and PUE-2 initiate PC5 interface communication after receiving notification from RAN, where the initiate PC5 interface communication may be either advertising or stimulating. Alternatively, PUE-1 and PUE-2 may not listen to the paging message of the above traffic type if they initiate PC5 interface communication.

In the third embodiment, the AMF starts the PC5 interface communication indication by sending a specific service according to the request of the application function entity. As shown in fig. 6, the method comprises the following steps:

in step 601, the terminals (UE-1, PUE-1 and PUE-2) obtain PC5 communication authorization and parameter configuration of the network device, optionally, the UE-1 may be a VUE or PUE or other UE with PC5 communication capability.

Step 602, UE-1 sends a second request to the application function through an application layer message, where the second request is used to request an AF to trigger a specific service to start a PC5 interface communication, and the request carries a service type and a PC5 interface communication type.

Step 603, the AF sends a service request to the PCF through the NEF, the service request is used to request the core network to trigger the designated service to start the PC5 interface communication, the request carries the service type, the PC5 start indication, and the UE-1 identifier, and the AF can determine which core network functional entities to notify based on the UE-1 location.

In step 604, the PCF interacts with the AF, determines which area PUE or PUE is notified to start the PC5 interface communication according to the position of the UE-1, and notifies the AMF.

In step 605, for the PUE in the connected state, for example, PUE-1 is in the connected state. And the AMF informs the PUE-1 to start the PC5 interface communication through NAS information, wherein the NAS information carries the service type.

For the PUE in the idle state, for example, PUE-2 is in the idle state, step 606. The AMF informs the PUE-2 to start the PC5 interface communication through the paging message. Optionally, the AMF calculates a paging occase through the service type, or the AMF sends a paging on a specific paging occase, where the paging message carries the service type.

Optionally, the paging message may also carry a paging area.

At step 607, PUE-1 and PUE-2 initiate PC5 interface communication after receiving notification of AMF, wherein the initiate PC5 interface communication can be sending (announcing) or listening (listening). Alternatively, PUE-1 and PUE-2 may not listen to the paging message of the above traffic type if they initiate PC5 interface communication.

Further, referring to fig. 7, an embodiment of the present application further provides another direct communication initiation control method, including:

step 701, monitoring a paging message at a target paging occasion;

Optionally, the method further comprises:

after listening to the paging message, direct communication is initiated.

Optionally, the method further comprises:

and after monitoring the paging message, changing the current Discontinuous Reception (DRX) mode.

Optionally, the changing the current DRX mode includes any one of:

under the condition that the current time is in the dormant state of the current DRX mode, the dormant state is adjusted to be an activated state;

and under the condition that the current DRX mode is the first DRX mode, the current DRX mode is changed into the second DRX mode.

Optionally, the second DRX mode is a DRX mode mapped by a service type, an application identifier, or a temporary group identifier.

Optionally, after the paging message is listened to on the target paging occasion, the method further includes:

and on the condition that the direct communication is started based on the paging message, sending a first response message to a network device, wherein the first response message is used for indicating that the terminal has started the direct communication.

Optionally, the first response message carries a first identifier of the terminal, where the first identifier includes at least one of an application layer identifier and a subscription encryption identifier.

It should be noted that, this embodiment is used as an implementation of the terminal corresponding to the embodiment shown in fig. 2, and specific implementations thereof may refer to relevant descriptions of the embodiment shown in fig. 2 and achieve the same beneficial effects, and are not described herein again to avoid repeated descriptions.

Further, referring to fig. 8, an embodiment of the present application further provides another direct communication initiation control method, which is applied to a first terminal, and the method includes:

step 801, receiving a notification message sent by a network device, where the notification message is used to notify the first terminal to start the direct communication;

step 802, initiating the direct communication according to the notification message.

Optionally, the notification message includes any one of: non-access stratum NAS messages, radio resource control RRC messages, and paging messages.

Optionally, in a case that the notification message includes the paging message, the receiving the notification message sent by the network device includes:

monitoring the paging message at a target paging occasion;

Optionally, the paging message carries at least one of the preset parameter, paging area information, and a globally unique temporary terminal identifier.

Optionally, after the direct communication is started according to the notification message, the method further includes:

sending a first response message, wherein the first response message is used for indicating that the first terminal has started the direct communication.

Optionally, the first response message carries a first identifier of the first terminal, where the first identifier includes at least one of an application layer identifier and a subscription encryption identifier.

Optionally, the method further comprises:

and changing the current Discontinuous Reception (DRX) mode after receiving the notification message.

Optionally, the changing the current DRX mode includes any one of:

It should be noted that, this embodiment is used as an implementation manner of the first terminal corresponding to the embodiment shown in fig. 3, and specific implementation manners thereof may refer to relevant descriptions of the embodiment shown in fig. 3 and achieve the same beneficial effects, and are not described herein again to avoid repeated descriptions.

Further, an embodiment of the present application further provides another direct communication initiation control method, which is applied to a second terminal, and the method includes:

Optionally, the sending request message includes any one of:

sending the request message to a network device;

and sending the request message to an application server.

Optionally, after the sending the request message, the method further includes:

and receiving a second response message sent by the network equipment, wherein the second response message carries a first identifier of the first terminal, and the first identifier comprises at least one of an application layer identifier, a signing encryption identifier and a globally unique temporary terminal identifier.

Optionally, after the sending the request message, the method further includes:

initiating the direct communication.

It should be noted that, this embodiment is used as an implementation manner of the second terminal corresponding to the embodiment shown in fig. 3, and specific implementation manners thereof may refer to relevant descriptions of the embodiment shown in fig. 3 and achieve the same beneficial effects, and are not described herein again to avoid repeated descriptions.

Further, another direct communication initiation control method is provided in an embodiment of the present application, where the method is applied to an application server, and the method includes:

Optionally, the method further comprises:

and providing a notification area for the network equipment, wherein the notification area is used for determining a target area for sending a notification message for notifying a terminal to start direct communication.

It should be noted that, this embodiment is used as an implementation of the application server corresponding to the embodiment shown in fig. 3, and specific implementation thereof may refer to relevant descriptions of the embodiment shown in fig. 3 and achieve the same beneficial effects, and therefore, in order to avoid repeated descriptions, details are not described here again.

It should be noted that, in the direct communication start control method provided in the embodiment of the present application, the execution main body may be a direct communication start control device, or a control module in the direct communication start control device for executing the direct communication start control method. In the embodiment of the present application, a direct communication start control device executes a direct communication start control method as an example, and the direct communication start control device provided in the embodiment of the present application is described.

Referring to fig. 9, fig. 9 is a structural diagram of a direct communication start control device according to an embodiment of the present application, and as shown in fig. 9, the direct communication start control device 900 includes:

a first sending module 901, configured to send a paging message at a target paging occasion;

Optionally, the paging message carries at least one of the preset parameter and the paging area information.

Optionally, the direct communication initiation control further includes:

a first receiving module, configured to receive a first response message sent by the terminal after sending a paging message on the target paging occasion, where the first response message is used to indicate that the terminal has started the direct communication.

Optionally, the first response message carries a first identifier of the terminal, where the first identifier includes at least one of an application layer identifier, a subscription encryption identifier, and a globally unique temporary terminal identifier.

Optionally, the paging message is sent within a target area, the target area being determined by a notification area provided by an application server.

The network device provided in the embodiment of the present application can implement each process in the method embodiment of fig. 2, and is not described here again to avoid repetition.

Referring to fig. 10, fig. 10 is a structural diagram of a direct communication start control device according to an embodiment of the present application, and as shown in fig. 10, the direct communication start control device 1000 includes:

a second receiving module 1001, configured to receive a request message, where the request message is used to request a network device to notify a terminal to start direct communication;

a second sending module 1002, configured to send a notification message to the first terminal according to the request message, where the notification message is used to notify the first terminal to start the direct communication.

Optionally, the notification message comprises at least one of: non-access stratum NAS messages, radio resource control RRC messages, and paging messages.

Optionally, in a case that the notification message includes the paging message, the second sending module 1002 is specifically configured to: sending a paging message at a target paging occasion;

Optionally, the paging message is sent within a target area, the target area being determined by at least one of:

notification area provided by the application server.

Optionally, the second receiving module 1001 is specifically configured to perform any one of the following:

receiving the request message sent by the second terminal;

and receiving the request message sent by the application server.

Optionally, the second receiving module 1001 is further configured to: and receiving a first response message sent by the first terminal, wherein the first response message is used for indicating that the first terminal has started the direct communication.

Optionally, the first response message carries a first identifier of the first terminal, where the first identifier includes at least one of an application layer identifier, a subscription encryption identifier, and a globally unique temporary terminal identifier.

Optionally, in a case that the reception request message is sent by a second terminal, the second sending module 1002 is further configured to: and sending a second response message to the second terminal, wherein the second response message carries the first identifier.

The terminal provided in the embodiment of the present application can implement each process in the method embodiment of fig. 3, and is not described here again to avoid repetition.

Referring to fig. 11, fig. 11 is a structural diagram of a direct communication start control device according to an embodiment of the present application, and as shown in fig. 11, the direct communication start control device 1100 includes:

a third receiving module 1101, configured to monitor a paging message at a target paging occasion;

Optionally, the direct communication start control device further includes:

and the processing module is used for starting direct communication after monitoring the paging message.

Optionally, the processing module is further configured to: and after monitoring the paging message, changing the current Discontinuous Reception (DRX) mode.

Optionally, the changing the current DRX mode includes any one of:

Optionally, the direct communication start control device further includes: a third sending module, configured to send a first response message to a network device when the direct communication is started based on the paging message, where the first response message is used to indicate that the terminal has started the direct communication.

The terminal provided in the embodiment of the present application can implement each process in the method embodiment of fig. 7, and is not described here again to avoid repetition.

Referring to fig. 12, fig. 12 is a structural diagram of a direct communication start control device according to an embodiment of the present application, and as shown in fig. 12, a direct communication start control device 1200 includes:

a fourth receiving module 1201, configured to receive a notification message sent by a network device, where the notification message is used to notify a terminal to start the direct communication;

a control module 1202, configured to start the direct communication according to the notification message.

Optionally, the notification message comprises any one of: non-access stratum NAS messages, radio resource control RRC messages, and paging messages.

Optionally, in a case that the notification message includes the paging message, the fourth receiving module 1201 is specifically configured to: monitoring the paging message at a target paging occasion;

Optionally, the direct communication start control device further includes: a fourth sending module, configured to send a first response message, where the first response message is used to indicate that the first terminal has started the direct communication.

Optionally, the control module 1202 is further configured to: and changing the current Discontinuous Reception (DRX) mode after receiving the notification message.

Optionally, the changing the current DRX mode includes any one of:

The terminal provided in the embodiment of the present application can implement each process in the method embodiment of fig. 8, and is not described here again in order to avoid repetition.

Referring to fig. 13, fig. 13 is a structural diagram of a direct communication start control apparatus according to an embodiment of the present application, and as shown in fig. 13, a direct communication start control apparatus 1300 includes:

a fifth sending module 1301, configured to send a request message, where the request message is used to request a network device to notify a terminal to start direct communication.

Optionally, the fifth sending module 1301 is specifically configured to execute any one of the following:

sending the request message to a network device;

and sending the request message to an application server.

Optionally, the direct communication start control device 1300 further includes:

a fifth receiving module, configured to receive a second response message sent by the network device, where the second response message carries a first identifier of the first terminal, and the first identifier includes at least one of an application layer identifier, a subscription encryption identifier, and a globally unique temporary terminal identifier.

Optionally, after the sending the request message, the direct communication initiation control apparatus 1300 further includes:

a start module to start the direct communication.

The terminal provided in the embodiment of the present application can implement each process in the method embodiment of the second terminal side, and is not described here again to avoid repetition.

Optionally, the fifth sending module 1301 is further configured to provide a notification area to the network device, where the notification area is used for the network device to determine a target area for sending a notification message, and the notification message is used to notify a terminal to start direct communication.

The terminal provided by the embodiment of the present application can implement each process in the method embodiment of the application server side, and is not described here again in order to avoid repetition.

The direct communication start control device in the embodiment of the present application may be a device, or may be a component, an integrated circuit, or a chip in a terminal. The device can be a mobile terminal or a non-mobile terminal. By way of example, the mobile terminal may include, but is not limited to, the above-listed type of terminal 11, and the non-mobile terminal may be a server, a Network Attached Storage (NAS), a Personal Computer (PC), a Television (TV), a teller machine, a kiosk, or the like, and the embodiments of the present application are not limited in particular.

The direct communication start control device in the embodiment of the present application may be a device having an operating system. The operating system may be an Android (Android) operating system, an ios operating system, or other possible operating systems, and embodiments of the present application are not limited specifically.

The direct communication start control device provided in the embodiment of the present application can implement each process implemented by the method embodiments of fig. 2 to fig. 8, and achieve the same technical effect, and is not described here again to avoid repetition.

Optionally, as shown in fig. 14, an embodiment of the present application further provides a communication device 1400, which includes a processor 1401, a memory 1402, and a program or an instruction stored in the memory 1402 and executable on the processor 1401, for example, when the communication device 1400 is a terminal, the program or the instruction is executed by the processor 1401 to implement the processes of the above-mentioned direct communication start control method embodiment, and the same technical effect can be achieved. When the communication device 1400 is a network device, the program or the instructions are executed by the processor 1401 to implement the processes of the above-mentioned direct communication start control method embodiment, and the same technical effect can be achieved, and for avoiding repetition, the details are not described here again.

Specifically, the embodiment of the application further provides a network device. As shown in fig. 15, the network device 1500 includes: an antenna 1501, a radio frequency device 1502, a baseband device 1503. The antenna 1501 is connected to the radio 1502. In the uplink direction, the rf device 1502 receives information via the antenna 1501, and transmits the received information to the baseband device 1503 for processing. In the downlink direction, the baseband device 1503 processes information to be transmitted and transmits the processed information to the rf device 1502, and the rf device 1502 processes the received information and transmits the processed information via the antenna 1501.

The above-mentioned band processing means may be located in the baseband device 1503, and the method performed by the network device in the above embodiment may be implemented in the baseband device 1503, where the baseband device 1503 includes a processor 1504 and a memory 1505.

The baseband device 1503 may include, for example, at least one baseband board on which a plurality of chips are disposed, as shown in fig. 15, where one of the chips, for example, the processor 1504, is connected to the memory 1505 to call up a program in the memory 1505 to perform the network device operations shown in the above method embodiments.

The baseband device 1503 may further include a network Interface 1506 for exchanging information with the Radio frequency device 1502, such as a Common Public Radio Interface (CPRI).

Specifically, the application server in the embodiment of the present application further includes: the instructions or programs stored in the memory 1505 and operable on the processor 1504, the processor 1504 calls the instructions or programs in the memory 1505 to execute the methods executed by the modules shown in fig. 9 and 10, and achieve the same technical effects, which are not described herein for avoiding redundancy.

Specifically, the embodiment of the application further provides an application server. As shown in fig. 16, the application server 1600 includes: an antenna 1601, a radio frequency device 1602, a baseband device 1603. The antenna 1601 is connected to the radio frequency device 1602. In the uplink direction, the rf device 1602 receives information via the antenna 1601 and transmits the received information to the baseband device 1603 for processing. In the downlink direction, the baseband device 1603 processes information to be transmitted and transmits the processed information to the rf device 1602, and the rf device 1602 processes the received information and transmits the processed information via the antenna 1601.

The above-mentioned band processing apparatus may be located in the baseband apparatus 1603, and the method performed by the application server in the above embodiment may be implemented in the baseband apparatus 1603, where the baseband apparatus 1603 includes the processor 1604 and the memory 1605.

The baseband device 1603 may include, for example, at least one baseband board on which a plurality of chips are disposed, as shown in fig. 16, where one of the chips, for example, the processor 1604, is connected to the memory 1605 to call up a program in the memory 1605 to perform the application server operation shown in the above method embodiment.

The baseband device 1603 may further include a network interface 1606 for exchanging information with the rf device 1602, such as a Common Public Radio Interface (CPRI).

Specifically, the application server in the embodiment of the present application further includes: the instructions or programs stored in the memory 1605 and executable on the processor 1604, the processor 1604 calls the instructions or programs in the memory 1605 to execute the method executed by each module on the application server side, and achieve the same technical effect, and are not described herein for avoiding repetition.

Fig. 17 is a schematic hardware structure diagram of a terminal implementing various embodiments of the present application.

The terminal 1700 includes, but is not limited to: radio frequency unit 1701, network module 1702, audio output unit 1703, input unit 1704, sensor 1705, display unit 1706, user input unit 1707, interface unit 1708, memory 1709, and processor 1710.

Those skilled in the art will appreciate that terminal 1700 may also include a power supply (e.g., a battery) for powering the various components, which may be logically coupled to processor 1710 via a power management system to manage charging, discharging, and power consumption management functions via the power management system. The terminal structure shown in fig. 17 does not constitute a limitation of the terminal, and the terminal may include more or less components than those shown, or combine some components, or have a different arrangement of components, and will not be described again here.

It should be understood that in the embodiment of the present application, the input Unit 1704 may include a Graphics Processing Unit (GPU) 17041 and a microphone 17042, and the Graphics Processing Unit 17041 processes image data of a still picture or a video obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The display unit 1706 may include a display panel 17061, and the display panel 17061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. User input unit 1707 includes a touch panel 17071 and other input devices 17072. A touch panel 17071, also referred to as a touch screen. The touch panel 17071 may include two parts, a touch detection device and a touch controller. Other input devices 17072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.

In this embodiment, the rf unit 1701 receives downlink data from a network device and then processes the downlink data in the processor 1710; in addition, the uplink data is sent to the network device. In general, radio frequency unit 1701 includes, but is not limited to, an antenna, at least one amplifier, transceiver, coupler, low noise amplifier, duplexer, and the like.

The memory 1709 may be used to store software programs or instructions and various data. The memory 1709 may mainly include a program or instruction storage area and a data storage area, where the program or instruction storage area may store an operating system, an application program or instruction (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. In addition, the Memory 1709 may include a high-speed random access Memory, and may further include a nonvolatile Memory, which may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable Programmable PROM (EPROM), an Electrically Erasable Programmable ROM (EEPROM), or a flash Memory. Such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.

Processor 1710 may include one or more processing units; optionally, the processor 1710 may integrate an application processor, which mainly handles operating systems, user interfaces, and applications or instructions, and a modem processor, which mainly handles wireless communications, such as a baseband processor. It is to be appreciated that the modem processor described above may not be integrated into processor 1710.

Wherein, the radio frequency unit 1701 is configured to monitor a paging message at a target paging occasion;

Or, the radio frequency unit 1701 is configured to receive a notification message sent by a network device, where the notification message is used to notify a terminal to start the direct communication;

a processor 1710 configured to initiate the direct communication according to the notification message.

Or, the radio frequency unit 1701 is configured to send a request message, where the request message is used to request the network device to notify the first terminal to start direct communication.

It should be understood that in this embodiment, in the method embodiment that the processor 1710 and the radio frequency unit 1701 can be used as a terminal, each process implemented by the terminal is not described herein again to avoid repetition.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the above direct communication start control method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

The processor is the processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and so on.

The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a network device program or an instruction, so as to implement each process of the above-mentioned direct communication start control method embodiment, and achieve the same technical effect, and in order to avoid repetition, the description is omitted here.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as system-on-chip, system-on-chip or system-on-chip, etc.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a base station) to execute the method according to the embodiments of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A direct communication start control method is applied to network equipment and is characterized by comprising the following steps:

sending a paging message at a target paging occasion;

2. The method of claim 1, wherein the preset parameter comprises a service type, an application identity, or a temporary mobile group identity.

3. The method of claim 1, wherein the paging message carries at least one of the preset parameter and paging area information.

4. The method of claim 1, wherein after the sending of the paging message on the target paging occasion, the method further comprises:

5. The method according to claim 4, wherein the first response message carries a first identifier of the terminal, and the first identifier comprises at least one of an application layer identifier, a subscription encryption identifier, and a globally unique temporary terminal identifier.

6. The method of claim 1, wherein the paging message is sent within a target area, and wherein the target area is determined by a notification area provided by an application server.

7. A direct communication start control method is applied to network equipment and is characterized by comprising the following steps:

8. The method of claim 7, wherein the notification message comprises at least one of: non-access stratum NAS messages, radio resource control RRC messages, and paging messages.

9. The method of claim 8, wherein in the case that the notification message comprises the paging message, sending a notification message to the first terminal according to the request message comprises:

sending a paging message at a target paging occasion;

10. The method of claim 7, wherein the notification message is sent within a target area, wherein the target area is determined by at least one of:

notification area provided by the application server.

11. The method of claim 9, wherein the preset parameter comprises a service type, an application identifier, or a temporary mobile group identifier.

12. The method of claim 9, wherein the paging message carries at least one of the preset parameter and paging area information.

13. The method according to claim 7, wherein the receiving the request message comprises any one of:

receiving the request message sent by the second terminal;

and receiving the request message sent by the application server.

14. The method of claim 7, wherein after sending the notification message to the first terminal according to the request message, the method further comprises:

15. The method of claim 14, wherein the first response message carries a first identifier of the first terminal, and wherein the first identifier comprises at least one of an application layer identifier, a subscription encryption identifier, and a globally unique temporary terminal identifier.

16. The method according to claim 15, wherein in the case that the reception request message is sent by a second terminal, after the receiving of the first response message sent by the first terminal, the method further comprises:

17. A direct communication starting control method is applied to a terminal and is characterized by comprising the following steps:

monitoring paging messages at a target paging occasion;

18. The method of claim 17, wherein the preset parameter comprises a service type, an application identity, or a temporary mobile group identity.

19. The method of claim 17, wherein the paging message carries at least one of the preset parameter and paging area information.

20. The method of claim 17, further comprising:

after listening to the paging message, direct communication is initiated.

21. The method of claim 17, further comprising:

22. The method according to claim 21, wherein said changing the current DRX mode comprises any of:

23. The method of claim 22, wherein the second DRX mode is a traffic type or application identity or temporary group identity mapped DRX mode.

24. The method of claim 17, wherein after listening for the paging message on the target paging occasion, the method further comprises:

25. The method of claim 24, wherein the first response message carries a first identifier of the terminal, and wherein the first identifier comprises at least one of an application layer identifier, a subscription encryption identifier, and a globally unique temporary terminal identifier.

26. A direct communication start control method is applied to a first terminal, and is characterized by comprising the following steps:

and starting the direct communication according to the notification message.

27. The method of claim 26, wherein the notification message comprises any one of: non-access stratum NAS messages, radio resource control RRC messages, and paging messages.

28. The method of claim 27, wherein in the case that the notification message comprises the paging message, the receiving the notification message sent by the network device comprises:

monitoring the paging message at a target paging occasion;

29. The method of claim 28, wherein the preset parameter comprises a service type, an application identity, or a temporary mobile group identity.

30. The method of claim 28, wherein the paging message carries at least one of the preset parameter and paging area information.

31. The method of claim 26, wherein after the initiating the direct communication according to the notification message, the method further comprises:

32. The method of claim 31, wherein the first response message carries a first identifier of the first terminal, and wherein the first identifier comprises at least one of an application layer identifier, a subscription encryption identifier, and a globally unique temporary terminal identifier.

33. The method of claim 32, further comprising:

34. The method according to claim 33, wherein said changing the current DRX mode comprises any of:

35. The method of claim 34, wherein the second DRX mode is a traffic type or application identity or temporary group identity mapped DRX mode.

36. A direct communication start control method is applied to a second terminal, and is characterized by comprising the following steps:

and sending a request message, wherein the request message is used for requesting the network equipment to inform the first terminal to start direct communication.

37. The method according to claim 36, wherein said sending a request message comprises any one of:

sending the request message to a network device;

and sending the request message to an application server.

38. The method of claim 36, wherein after sending the request message, the method further comprises:

39. The method of claim 36, wherein after sending the request message, the method further comprises:

initiating the direct communication.

40. A direct communication start control method is applied to an application server and is characterized by comprising the following steps:

41. The method of claim 40, further comprising:

42. A direct communication activation control apparatus, comprising:

43. The apparatus of claim 42, wherein the preset parameter comprises a service type, an application identity, or a temporary mobile group identity.

44. A direct communication activation control apparatus, comprising:

45. The apparatus of claim 44, wherein the notification message comprises at least one of: non-access stratum NAS messages, radio resource control RRC messages, and paging messages.

46. A direct communication activation control apparatus, comprising:

47. The apparatus of claim 46, wherein the preset parameter comprises a service type, an application identity, or a temporary mobile group identity.

48. A direct communication activation control apparatus, comprising:

a fourth receiving module, configured to receive a notification message sent by a network device, where the notification message is used to notify a terminal to start the direct communication;

49. The apparatus of claim 48, wherein the notification message comprises any one of: non-access stratum NAS messages, radio resource control RRC messages, and paging messages.

50. A direct communication activation control apparatus, comprising:

51. A communication device, comprising: memory, processor and program or instructions stored on the memory and executable on the processor, which when executed by the processor implement the steps in the direct communication initiation control method of any one of claims 1 to 41.

52. A readable storage medium, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the direct communication initiation control method according to any one of claims 1 to 41.