Communication method, device and equipment

Abstract

The embodiments of the present invention provide a communication method, device and equipment, which relate to the field of communication. The method includes: sending a second message to a third node, wherein the second message is used to instruct paging the third node to access the network, or to instruct the first node to provide a relay service for the third node, or to instruct the third node to communicate with the first node, or to instruct the third node to be configured as a low-profile mode or a high-profile mode, or to instruct the third node to update a system message. The present invention sends a second message to a third node through a first node, wherein the second message is used to instruct the third node to perform a corresponding operation, thereby solving the problem that the third node needs to periodically listen to the message sent by the second node during D2D communication, resulting in high power consumption; and achieves the purpose of receiving the information sent by the second node while achieving effective power saving during D2D communication at the third node.

Description

[0001] This application is a divisional application of the original Chinese application with application number “201680088056.4” filed on August 11, 2016, wherein the original application is incorporated into the present application by reference. Technical Field

[0002] The embodiments of the present invention relate to the field of communications, and in particular to a communication method, apparatus and device. Background Art

[0003] In order to expand the coverage of network services, a relay technology for connecting user equipment to the network (English: UE-to-network relay) is introduced in the related art.

[0004] In the relay technology for connecting user equipment to the network, the relay device is generally located within the coverage of the base station, while the device that needs to be connected to the network may not be located within the coverage of the base station. In order for the device that needs to be connected to the network to connect to the base station, the relay device is required to transfer the data between the base station and the device that needs to be connected to the base station. Taking the first node as a relay device and the third node as a device that needs to be connected to the network as an example, the first node establishes a device-to-device (D2D) connection with the third node, and the first node forwards the downlink data sent by the base station to the third node, or forwards the uplink data sent by the third node to the base station, thereby realizing the possibility of providing network services for the base station and the third node.

[0005] When the third node uses the first node as a relay device to realize the communication between the third node and the base station, on the one hand, it is necessary to maintain the D2D connection between the third node and the first node, and on the other hand, it is necessary to maintain the link between the third node and the base station. When the third node maintains the link between the third node and the base station, it at least needs to regularly monitor the system message, paging message, etc. of the base station, so the third node consumes a lot of power during the D2D communication process. Summary of the invention

[0006] In order to solve the problems existing in the related art, the embodiments of the present invention provide a communication method, device and equipment. The technical solution is as follows:

[0007] In a first aspect, a communication method is provided, which is applied to a first node, and the method includes: sending a second message to a third node, the second message being used to instruct the third node to access the network, or instruct the third node to communicate with the second node through the first node, or instruct the third node to be configured as a low-configuration mode, or instruct the third node to be configured as a high-configuration mode, or instruct the third node to update a system message; wherein the second node is a service site of the first node, or the second node is a service site of the third node, or the second node is a service site of both the first node and the third node.

[0008] When the second message is used to instruct the third node to access the network, the third node can access the network in time according to the second message sent by the first node, without having to constantly listen to the networking message sent by the second node, thereby effectively avoiding the process of the third node listening to the second node and preventing the third node from generating listening power consumption.

[0009] When the second message is used to instruct the third node to communicate with the second node through the first node, the third node can receive information sent by the second node relayed by the first node without having to monitor the information sent by the second node, and no monitoring power consumption will be generated.

[0010] When the second node is used to instruct the third node to be configured as the low-profile mode, the third node does not receive information sent by the second node, so the third node will not actively monitor the information sent by the second node, and will not generate monitoring power consumption.

[0011] When the second message is used to indicate that the third node is configured as the high-profile mode, the third node directly receives the information sent by the second node without having to listen to the information sent by the second node all the time, thereby avoiding the power consumption caused by long-term listening.

[0012] When the second message is used to instruct the third node to update the system message, the third node can update the system message according to the second message sent by the first node without having to listen to the system message sent by the second node all the time, thereby effectively avoiding the process of the third node listening to the second node and preventing the third node from consuming power by listening.

[0013] Since the second messages with the above-mentioned various indication contents can reduce or avoid the monitoring power consumption of the third node to a certain extent, the problem that the third node needs to regularly listen to the messages sent by the second node during D2D communication, resulting in high power consumption, is solved.

[0014] In a first possible implementation of the first aspect, before sending a second message to a third node, the method includes: receiving a first message sent by the second node, the first message being used to indicate that the first message is used to page the third node, or to indicate that the third node accesses the network, or to indicate that the first node provides a relay service for the third node, or to indicate that the third node is configured as a low-profile mode, or to indicate that the third node is configured as a high-profile mode, or to indicate that a system message update is performed. According to the first message, a second message is sent to the third node. Since the first node can send a second message to the third node according to the instruction content of the first message after receiving the first message sent by the second node, these second messages can reduce the listening time of the third node to the second node to a certain extent, and reduce the listening power consumption generated by the third node.

[0015] In combination with the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, receiving the first message sent by the second node includes: receiving the first message sent by the second node within a paging cycle of a third node; or receiving the first message sent by the second node within a paging cycle of the first node. Since the first node receives the first message sent by the second node only within the paging cycle of the first node or the third node, power consumption of the first node can be reduced.

[0016] In combination with the first possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, sending a second message to a third node includes: when the first message is used to indicate that the third node accesses the network, sending a second message to the third node, and the second message is used to indicate that the third node establishes a communication connection with the second node; or, when the first message is used to page the third node, sending a second message to the third node, and the second message is used to indicate that the third node accesses the network, or indicates that the third node communicates with the first node; or, when the first message is used to indicate that the first node provides a relay service for the third node, sending a second message to the third node, and the second message is used to indicate that the third node communicates with the first node; or, when the first message is used to indicate that the third node is configured as a low-configuration mode, sending a second message to the third node, and the second message is used to indicate that the third node is configured as a low-configuration mode; or, when the first message is used to indicate that the third node is configured as a high-configuration mode, sending a second message to the third node, and the second message is used to indicate that the third node is configured as a high-configuration mode; or, when the first message is used to indicate that a system message update is performed, sending a second message to the third node, and the second message is used to indicate that the third node performs a system message update. After receiving the first message sent by the second node, the first node will send a second message corresponding to the information indicated by the first message to the third node, so that the third node can promptly perform corresponding operations according to the information indicated in the first message. The third node does not need to continuously listen to the information sent by the second node, thereby reducing the power consumption of listening.

[0017] In combination with the first possible implementation of the first aspect and the third possible implementation of the first aspect, in a fourth possible implementation of the first aspect, when the first message is used to paging a third node, it includes: when the first message is used to paging the third node, according to the service priority of the third node, sending a second message to the third node, the second message is used to indicate the third node to access the network or to indicate the third node to communicate with the first node.

[0018] In a fifth possible implementation of the first aspect, after sending the second message to the third node, the method further includes: releasing the D2D connection between the first node and the third node; or terminating the D2D communication between the first node and the third node; or maintaining the D2D communication between the first node and the third node; or maintaining the D2D connection between the first node and the third node; or suspending the D2D connection between the first node and the third node. After sending the second message to the third node, the second node may release, terminate or suspend the D2D connection between the first node and the third node to reduce the power consumption of the third node in D2D communication, and the second node may also maintain or maintain the D2D connection so that the third node can continue to receive information sent by the second node.

[0019] In a sixth possible implementation of the first aspect, after sending the second message to the third node, the method further includes: receiving a third message sent by the third node, the third message indicating that the third node has successfully accessed the network, or indicating that the third node has successfully paging, or indicating that the third node has successfully established a communication connection with the second node, or indicating that the third node has been configured as a high-profile mode, or the third message is used to reply to confirm communication with the first node, or to indicate that the third node has completed the update of the system message. After sending the second message to the third node, the first node can determine the operation performed by the third node or the current communication mode of the third node based on whether the third message sent by the third node is received, so as to avoid the first node repeatedly instructing the third node to perform the same operation, and avoid the third node consuming power when performing repeated operations.

[0020] In combination with the sixth possible implementation of the first aspect, in a seventh possible implementation of the first aspect, after receiving the third message sent by the third node, the method further includes: when the third message is used to reply to confirm communication with the first node, then maintaining the D2D communication between the first node and the third node; or, maintaining the D2D connection between the first node and the third node. When the first message is a reply to confirm communication with the first node, it indicates that the third node needs to continue D2D communication with the first node. At this time, the first node maintains or maintains the D2D connection between the first node and the third node, so that the third node can continue to communicate with the first node.

[0021] In an eighth possible implementation of the first aspect, after sending the second message to the third node, the method further includes: receiving a fourth message sent by the second node, the fourth message indicating that the third node has successfully accessed the network, or indicating that the third node has been successfully paged; or releasing the D2D connection between the first node and the third node; or terminating the D2D communication between the first node and the third node; or maintaining the D2D communication between the first node and the third node; or maintaining the D2D connection between the first node and the third node. If the first node receives the fourth message sent by the second node, it indicates that the third node has successfully established a communication connection with the second node. In this case, the third node usually no longer communicates with the first node. At this time, the first node can release and terminate the D2D connection between the first node and the third node to reduce the power consumption of the third node in D2D communication. The second node can also maintain or maintain the D2D connection, so that the third node can directly receive the information sent by the second node after the second node ends the communication with the first node.

[0022] In a ninth possible implementation of the first aspect, after sending the second message to the third node, the method further includes: sending a fifth message to the second node, the fifth message indicating the release of the relevant configuration of the D2D connection between the first node and the third node, or indicating the release of the D2D connection between the first node and the third node. In order to avoid the first node or the third node not having the authority to release the D2D connection between the first node and the third node, the first node may send the fifth message to the second node to instruct the second node to release the D2D connection or the relevant configuration of the D2D connection, thereby reducing the power consumption of the third node in D2D communication.

[0023] In combination with the first possible implementation of the first aspect, in a tenth possible implementation of the first aspect, when the first message is used to indicate that the first node provides a relay service for a third node, the first node provides a data relay service for the third node.

[0024] In an eleventh possible implementation of the first aspect, the method further includes: receiving a sixth message sent by a third node, the sixth message being used to instruct the third node to receive a paging message from the first node, or instructing the third node to receive a system message from the first node, or indicating that the mode configured by the third node is a high-profile mode, or indicating that the mode configured by the third node is a low-profile mode; or, sending a seventh message to the third node, the seventh message being used to instruct the third node to receive a paging message from the first node, or instructing the third node to receive a system message from the first node, or indicating that the mode configured by the third node is a high-profile mode, or indicating that the mode configured by the third node is a low-profile mode. The first node can learn the current communication mode or the currently executed operation of the third node according to the content indicated by the sixth message sent by the third node, so as to avoid the first node repeatedly instructing the third node to perform the same operation, and avoid the third node generating power consumption when performing repeated operations. The first node can send a seventh message to the third node to instruct the third node to perform the corresponding operation, without the need for the third node to listen to the information sent by the second node, so as to avoid the third node generating power consumption by listening.

[0025] In combination with the first aspect, any one of the first possible implementation manner of the first aspect to the eleventh possible implementation manner of the first aspect, in a twelfth possible implementation manner of the first aspect, before the first node receives the first message, the first node provides a relay service for the third node.

[0026] In combination with the first aspect, any one of the first possible implementation manner of the first aspect to the twelfth possible implementation manner of the first aspect, in the thirteenth possible implementation manner of the first aspect, the low-profile mode refers to at least one of the following: the third node resides (stay) under the first node; or, the third node only receives information sent by the first node; or, the third node only receives signaling and / or data sent by the first node; or, the third node only receives signaling and / or data sent by the D2D communication node; or, the third node receives signaling and / or data sent by the first node; or, the third node receives signaling and / or data sent by the D2D communication node; or, the third node receives a paging message sent by the first node; or, the third node receives a system message sent by the first node; or, the third node receives a synchronization signal sent by the first node; or, the third node does not receive a system message sent by the cell; or, the third node does not receive a system message sent by the cell; or, the third node does not receive synchronization information sent by the cell; or, the third node receives information sent by the first node, but does not perform at least one of the following operations: reside in a cell, receive Receive system messages sent by the cell, receive paging messages sent by the cell, receive synchronization signals sent by the cell, receive system messages sent by the site, receive paging messages sent by the site, receive synchronization signals sent by the site, neighbor cell measurement, same-frequency cell measurement, and inter-frequency cell measurement; or, the third node receives information sent by the D2D communication node, but does not perform at least one of the following operations: reside in a cell, receive system messages sent by the cell, receive paging messages sent by the cell, receive synchronization signals sent by the cell, receive system messages sent by the site, receive paging messages sent by the site, receive synchronization signals sent by the site, neighbor cell measurement, same-frequency cell measurement, and inter-frequency cell measurement; the high-configuration mode includes at least one of the following: the third node resides in the cell, or receives system messages sent by the cell, or receives synchronization signals sent by the cell, or receives paging messages sent by the cell, receives system messages sent by the site, or receives synchronization signals sent by the site, or receives paging messages sent by the site, or performs cell selection, or performs cell reselection, or performs neighbor cell measurement, or performs same-frequency cell measurement, or performs inter-frequency cell measurement. Since the third node in the low-configuration mode does not receive the information sent by the second node, the third node will not actively listen to the information sent by the second node. After the third node is configured to the high-configuration mode, it directly receives the information sent by the second node, and there is no need to listen to the information sent by the second node before being configured to the high-configuration mode.

[0027] In combination with the first aspect, any one of the first possible implementation manner of the first aspect to the thirteenth possible implementation manner of the first aspect, in the fourteenth possible implementation manner of the first aspect, the second message includes at least one of the following: an identifier of the first node, an identifier of the third node, a system information update indication, system information, a paging indication, a service type of the third node, and a service priority of the third node. After receiving the second message sent by the first node, the third node can choose whether to use the third node for relay or access the second node based on information such as the service type of the third node and the service priority of the third node. For example, for services with low service priority, the first node can directly provide relay services for the third node to avoid high power consumption after the third node and the second node are connected for communication.

[0028] In combination with the fourth possible implementation of the first aspect, in the fifteenth possible implementation of the first aspect, sending a second message to the third node according to the service priority of the third node includes: when the first message is used to paging the third node, if the service priority of the third node is the first priority, sending a second message to the third node, the second message is used to indicate that the third node accesses the network; or, when the first message is used to paging the third node, if the service priority of the third node is the second priority, sending a second message to the third node, the second message is used to indicate that the third node communicates with the first node; wherein the first priority is higher than the second priority. After receiving the first message sent by the second node, the first node can choose whether to provide relay for the third node or instruct the third node to access the second node according to information such as the service type of the third node and the service priority of the third node. For example, for services with low service priority, the first node can directly provide relay services for the third node to avoid high power consumption after the third node communicates with the second node.

[0029] In a second aspect, a communication method is provided, which is applied to a third node, and the method includes: receiving a second message sent by a first node or a second node, the second message is used to instruct the third node to access the network, or to instruct the third node to communicate with the first node, or to instruct the third node to be configured as a high-configuration mode, or to instruct the third node to be configured as a low-configuration mode, or to instruct a system message update; communicating according to the second message; wherein the second node is a service site of the first node, or the second node is a service site of the third node, or the second node is a service site of both the first node and the third node.

[0030] When the second message is used to instruct the third node to access the network, the third node can access the network in time according to the second message sent by the first node, without having to constantly listen to the networking message sent by the second node, thereby effectively avoiding the process of the third node listening to the second node and preventing the third node from generating listening power consumption.

[0031] When the second message is used to instruct the third node to communicate with the second node through the first node, the third node can receive information sent by the second node relayed by the first node without having to monitor the information sent by the second node, and no monitoring power consumption will be generated.

[0032] When the second node is used to instruct the third node to be configured as the low-profile mode, the third node does not receive information sent by the second node, so the third node will not actively monitor the information sent by the second node, and will not generate monitoring power consumption.

[0033] When the second message is used to indicate that the third node is configured as the high-profile mode, the third node directly receives the information sent by the second node without having to listen to the information sent by the second node all the time, thereby avoiding the power consumption caused by long-term listening.

[0034] When the second message is used to instruct the third node to update the system message, the third node can update the system message according to the second message sent by the first node without having to listen to the system message sent by the second node all the time, thereby effectively avoiding the process of the third node listening to the second node and preventing the third node from consuming power by listening.

[0035] Since the second messages with the above-mentioned various indication contents can reduce or avoid the monitoring power consumption of the third node to a certain extent, the problem that the third node needs to regularly listen to the messages sent by the second node during D2D communication, resulting in high power consumption, is solved.

[0036] In a first possible implementation of the second aspect, communicating according to the second message includes: when the second message is used to instruct the third node to access the network, accessing the network or accessing the second node to communicate with the second node; or, when the second message is used to instruct the third node to communicate with the first node, performing D2D communication with the first node; or, detecting whether the third node has established a D2D connection with the first node, when the third node has not established a D2D connection with the first node, establishing a D2D connection with the first node, when the third node has established a D2D connection with the first node, performing D2D communication with the first node, or, when the second message indicates that the third node is configured to a high-configuration mode, configuring the communication mode of the third node to a high-configuration mode; or, when the second message indicates that the third node is configured to a low-configuration mode, configuring the communication mode of the third node to a low-configuration mode; when the second message indicates that the third node is configured to a low-configuration mode, configuring the communication mode of the third node to a low-configuration mode; when the second message indicates that the third node updates a system message, listening to the system message, updating the system message, or configuring the communication mode of the third node to a high-configuration mode. Since the third node can determine whether to establish a communication connection with the second node, whether to configure the communication mode to a high-configuration mode, or whether to update the system message through the information indicated in the second message, the third node does not need to continuously listen to the information sent by the second node, thereby reducing or avoiding the power consumption caused by listening.

[0037] In combination with the first possible implementation of the second aspect, in the second possible implementation of the second aspect, after receiving the second message sent by the first node, the method further includes: sending a third message to the first node, or, if the network is successfully accessed within a predetermined time period from the receipt of the second message, or a communication connection is successfully established with the second node, then sending a third message to the first node, wherein the third message indicates that the third node has successfully accessed the network, or indicates that the paging of the third node is successful, or indicates that the third node has successfully established a communication connection with the second node, or indicates that the third node has been configured as a high-profile mode, or is used to reply to confirm communication with the first node, or is used to indicate that the third node has updated the system message. When establishing a connection with the second node or accessing the network within the predetermined time period, the third node can send a third message to the first node to inform the first node of the operation performed by the third node or the current communication mode, so as to avoid the first node repeatedly instructing the third node to perform the same operation, and to avoid the third node consuming power when performing repeated operations.

[0038] In combination with the second aspect, the first possible implementation of the second aspect, or the second possible implementation of the second aspect, in a third possible implementation of the second aspect, the method also includes: maintaining the D2D connection between the first node and the third node, or releasing the D2D connection between the first node and the third node.

[0039] In a fourth possible implementation of the second aspect, the method further includes: before receiving the second message sent by the first node, the third node is in a low-profile mode; or, after receiving the second message sent by the first node, the communication mode of the third node is configured to be in a low-profile mode, or the third node is configured to be in a high-profile mode; or, when receiving the second message sent by the first node, the third node is in a low-profile mode. In order to reduce the power consumption of the third node, after receiving the second message sent by the first node, the third node can configure the communication mode to be in a low-profile mode, and in order to ensure communication between the first node and the third node, after receiving the second message sent by the first node, the third node can configure the communication mode to be in a high-profile mode. Since the third node is configured to be in a high-profile mode or a low-profile mode according to the second message, it is not necessary to listen to the information sent by the second node all the time, so the third node can avoid listening power consumption.

[0040] In combination with the first possible implementation of the second aspect, in a fifth possible implementation of the second aspect, after monitoring the system message, the method further includes: after completing the system message update, configuring the third node to a low-profile mode; or, after completing the system message update and the third node meets a predetermined condition, configuring the third node to a low-profile mode. In order to reduce power consumption of the third node, after the system message is updated, the third node may configure the communication mode to the low-profile mode.

[0041] In a sixth possible implementation of the second aspect, the method further includes: sending a sixth message to the first node, the sixth message indicating that the third node receives a paging message from the first node, or indicating that the third node receives a system message from the first node, or indicating that the mode configured by the third node is a high-profile mode, or indicating that the mode configured by the third node is a low-profile mode; or, receiving a seventh message sent by the first node or the second node, the seventh message is used to indicate that the third node receives a paging message from the first node, or indicates that the third node receives a system message from the first node, or indicates that the mode configured by the third node is a high-profile mode, or indicates that the mode configured by the third node is a low-profile mode. The first node can learn the current communication mode or the currently executed operation of the third node according to the content indicated by the sixth message sent by the third node, so as to avoid the first node repeatedly instructing the third node to perform the same operation, and avoid the third node generating power consumption when performing repeated operations. The first node can send the seventh message to the third node to instruct the third node to perform the corresponding operation, without the need for the third node to listen to the information sent by the second node, so as to avoid the third node generating power consumption by listening.

[0042] In combination with the second aspect and any one of the first possible implementation manner of the second aspect to the sixth possible implementation manner of the second aspect, in a seventh possible implementation manner of the second aspect, the first node is a node that provides relay services to the third node.

[0043] In combination with the second aspect, any one of the first possible implementation manner of the second aspect to the seventh possible implementation manner of the second aspect, in the eighth possible implementation manner of the second aspect, the low-configuration mode refers to at least one of the following: the third node stays under the first node; or, the third node only receives information sent by the first node; or, the third node only receives signaling and / or data sent by the first node; or, the third node only receives signaling and / or data sent by the D2D communication node; or, the third node receives signaling and / or data sent by the first node; or, the third node receives signaling and / or data sent by the D2D communication node; or, the third node receives a paging message sent by the first node; or, the third node receives a system message sent by the first node; or, the third node receives a synchronization signal sent by the first node; or, the third node does not receive a system message sent by the cell; or, the third node does not receive a paging message sent by the cell; or, the third node does not receive synchronization information sent by the cell; or, the third node receives information sent by the first node, but does not perform at least one of the following operations: reside in a cell, receive System message sent by the cell, paging message sent by the cell, synchronization signal sent by the cell, system message sent by the site, paging message sent by the site, synchronization signal sent by the site, neighbor cell measurement, same-frequency cell measurement, and inter-frequency cell measurement; or, the third node receives information sent by the D2D communication node, but does not perform at least one of the following operations: resides in a cell, receives system message sent by the cell, paging message sent by the cell, synchronization signal sent by the cell, system message sent by the site, paging message sent by the site, synchronization signal sent by the site, neighbor cell measurement, same-frequency cell measurement, and inter-frequency cell measurement; the high-configuration mode includes at least one of the following: the third node resides in the cell, or receives system message sent by the cell, or receives synchronization signal sent by the cell, or receives paging message sent by the cell, system message sent by the site, or receives synchronization signal sent by the site, or receives paging message sent by the site, or performs cell selection, or performs cell reselection, or performs neighbor cell measurement, or performs same-frequency cell measurement, or performs inter-frequency cell measurement. Since the third node in the low-configuration mode does not receive the information sent by the second node, the third node will not actively listen to the information sent by the second node. After the third node is configured to the high-configuration mode, it directly receives the information sent by the second node, and there is no need to listen to the information sent by the second node before being configured to the high-configuration mode.

[0044] In combination with the second aspect, any one of the first possible implementation of the second aspect to the eighth possible implementation of the second aspect, in the ninth possible implementation of the second aspect, the first message includes at least one of the following: an identifier of the first node, an identifier of the third node, a system information update indication, system information, a paging indication, a service type of the third node, and a service priority of the third node. After receiving the first message sent by the second node, the first node can choose whether to provide relay for the third node or instruct the third node to access the second node based on information such as the service type of the third node and the service priority of the third node. For example, for services with low service priority, the first node can directly provide relay services for the third node to avoid high power consumption after the third node and the second node establish a communication connection.

[0045] According to a third aspect, a communication method is provided, which is applied to a second node, and the method includes: sending a first message to a first node or a third node, wherein the first message is used to page the third node, or to instruct the third node to access the network, or to instruct the third node to communicate with the second node, or to instruct the first node to provide a relay service for the third node, or to indicate that the third node is configured as a high-configuration mode, or to indicate that the third node is configured as a low-configuration mode, or to indicate a system message update; communicating according to the first message; wherein the first node provides a relay service for the third node, the second node is a service site for the first node, or the second node is a service site for the third node, or the second node is a service site for both the first node and the third node.

[0046] When the first message is used to page the third node, the third node can directly receive or relay the first message through the second node to timely access the second node without constantly listening to the paging message sent by the second node, thereby preventing the third node from consuming power due to listening.

[0047] When the first message is used to instruct the third node to access the network, the third node can directly receive or relay the first message through the second node without constantly listening to the networking messages sent by the second node, thereby effectively avoiding the process of the third node listening to the second node and preventing the third node from consuming power due to listening.

[0048] When the first message is used to instruct the third node to communicate with the second node, the third node can directly receive or receive information sent by the second node relayed by the first node without intercepting the information sent by the second node and generating no interception power consumption.

[0049] When the first message is used to instruct the first node to provide a relay service for the third node, the third node receives the information sent by the second node relayed by the first node without having to monitor the information sent by the second node, and thus no monitoring power consumption is generated.

[0050] When the first message is used to indicate that the third node is configured as the high-profile mode, the third node directly receives the information sent by the second node without having to listen to the information sent by the second node all the time, thereby avoiding the power consumption caused by long-term listening.

[0051] When the first message is used to indicate that the third node is configured as the low-profile mode, the third node does not receive information sent by the second node, so the third node will not actively monitor the information sent by the second node, and will not generate monitoring power consumption.

[0052] When the first message is used to indicate a system message update, the third node can update the system directly by receiving or by receiving the first message sent by the second node relayed by the first node, without having to listen to the system message sent by the second node all the time, thereby effectively avoiding the process of the third node listening to the second node and preventing the third node from consuming power by listening.

[0053] Since the first messages with various indication contents can reduce or avoid the monitoring power consumption of the third node to a certain extent, the problem that the third node needs to regularly monitor the messages sent by the second node during D2D communication, resulting in high power consumption, is solved.

[0054] In a first possible implementation manner of the third aspect, sending the first message to the first node includes: sending the first message in a paging cycle of the third node, or sending the first message in a paging cycle of the first node. The second node sends the first message to the second node only in a paging cycle of the third node or the first node, so that the first node can send the second message to the third node in the paging cycle of the first node or the third node, thereby reducing the number of paging times of the third node and reducing the power consumption of the third node during the paging process.

[0055] In a second possible implementation of the third aspect, the method further includes: receiving a tenth message, the tenth message is used to indicate pairing information between the third node and the first node; and / or, sending an eighth message to the MME, the eighth message is used to notify the MME of information about the third node and information about the first node, wherein the first node is a relay node of the third node; and / or, receiving a ninth message sent by the MME, the ninth message is used to notify the second node to page the first node, and the ninth message includes information about the third node and the first node. After the second node obtains the pairing information between the third node and the first node, it can inform the MME, and the MME decides whether to notify the second node to page the first node.

[0056] In a third possible implementation of the third aspect, the method further includes: sending a fourth message to the first node, the fourth message is used to indicate that the third node has successfully accessed the network, or indicates that the third node has successfully been paging; or releasing the D2D connection between the first node and the third node; or terminating the D2D communication between the first node and the third node; or maintaining the D2D communication between the first node and the third node; or maintaining the D2D connection between the first node and the third node; or receiving a fifth message sent by the first node, the fifth message is used to indicate the relevant configuration of releasing the D2D connection between the first node and the third node, or indicating the release of the D2D connection between the first node and the third node. If the first node receives the fourth message sent by the second node, it means that the third node has successfully established a communication connection with the second node. At this time, the first node can release or terminate the D2D connection between the first node and the third node to reduce the power consumption of the third node in D2D communication. The second node can also maintain or maintain the D2D connection so that the third node continues to receive information sent by the second node. To avoid the first node or the third node not having the authority to release the D2D connection between the first node and the third node, when the second node receives the fifth message sent by the first node, it can release the D2D connection between the first node and the third node or the related configuration of the D2D connection to reduce the power consumption of the third node in D2D communication.

[0057] In combination with the third aspect, any one of the first possible implementation of the third aspect to the third possible implementation of the third aspect, in a fourth possible implementation of the third aspect, the second node is a service site of the first node, or the second node is a service site of the third node, or the second node is a service site of the first node and the third node; before the first node receives the first message, the first node provides relay service for the third node.

[0058] In combination with the third aspect, any one of the first possible implementation of the third aspect to the fourth possible implementation of the third aspect, in a fifth possible implementation of the third aspect, the first message includes at least one of the following: an identifier of the first node, an identifier of the third node, a system information update indication, system information, a paging indication, a service type of the third node, and a service priority of the third node. After receiving the first message sent by the second node, the first node can choose whether to provide relay for the third node or instruct the third node to access the second node based on information such as the service type of the third node and the service priority of the third node. For example, for services with low service priority, the first node can directly provide relay services for the third node to avoid high power consumption after the third node and the second node establish a communication connection.

[0059] In a fourth aspect, a communication device is provided, which is applied to a first node. The communication device includes at least one unit, and the at least one unit corresponds to the communication method provided by the above-mentioned first aspect or any possible implementation method of the first aspect.

[0060] In a fifth aspect, a communication device is provided, which is applied to a third node. The communication device includes at least one unit, and the at least one unit corresponds to the communication method provided by the above-mentioned second aspect or any possible implementation method of the second aspect.

[0061] In a sixth aspect, a communication device is provided, which is applied to a second node. The communication device includes at least one unit, and the at least one unit corresponds to the communication method provided by the third aspect or any possible implementation method of the third aspect.

[0062] In the seventh aspect, a first node is provided, which includes: a processor, a memory and a transceiver, the memory is used to store one or more instructions, and these instructions are configured to be executed by the processor, and these instructions respectively correspond to the communication method provided by the above-mentioned first aspect or any possible implementation method of the first aspect.

[0063] In an eighth aspect, a third node is provided, which includes: a processor, a memory and a transceiver, the memory is used to store one or more instructions, and these instructions are configured to be executed by the processor, and these instructions respectively correspond to the communication method provided by the above-mentioned second aspect or any possible implementation method of the second aspect.

[0064] In the ninth aspect, a second node is provided, which includes: a processor, a memory and a transceiver, the memory is used to store one or more instructions, and these instructions are configured to be executed by the processor, and these instructions respectively correspond to the communication method provided by the above-mentioned third aspect or any possible implementation method of the third aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0066] Figure 1 is a schematic diagram of the structure of a communication system provided by an exemplary embodiment of the present invention;

[0067] Figure 2is a flow chart of a communication method provided by an exemplary embodiment of the present invention;

[0068] Figure 3 is a flow chart of a communication method provided by another exemplary embodiment of the present invention;

[0069] Figure 4 is a flow chart of a communication method provided by another exemplary embodiment of the present invention;

[0070] Figure 5 is a flow chart of a communication method provided by another exemplary embodiment of the present invention;

[0071] Figure 6 is a flow chart of a communication method provided by another exemplary embodiment of the present invention;

[0072] Figure 7 is a flow chart of a communication method provided by another exemplary embodiment of the present invention;

[0073] Figure 8 is a flow chart of a communication method provided by another exemplary embodiment of the present invention;

[0074] Fig. 9 is a flowchart of a method for updating system information of a third node provided by an exemplary embodiment of the present invention;

[0075] Fig.10 is a block diagram of a device provided by an embodiment of the present invention;

[0076] Fig.11 is a block diagram of a communication device provided by an embodiment of the present invention;

[0077] Fig.12 is a block diagram of a communication device provided by another embodiment of the present invention;

[0078] Fig.13 It is a block diagram of a communication device provided by yet another embodiment of the present invention. DETAILED DESCRIPTION

[0079] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0080] Please refer to Figure 1 , which shows a schematic diagram of the structure of a communication system provided by an exemplary embodiment of the present invention. The communication system includes: a first node 120, a second node 140 and a third node 160.

[0081] The first node 120 is a relay node for the third node 160 .

[0082] The second node 140 is a network element interacting with the first node 120 in the system.

[0083] Optionally, the second node 140 can be, for example, a base station, for example, an evolved base station (eNB or e-NodeB) in Long Term Evolution (LTE), or a base station (NodeB) in Wideband Code Division Multiple Access (WCDMA), or a base station (Base Transceiver Station, BTS) in Global System for Mobile Communications (GSM) or Code Division Multiple Access (CDMA).

[0084] Optionally, the second node 140 is a service site of the first node 120 , or the second node 140 is a service site of the third node 160 , or the second node 140 is a service site of both the first node 120 and the third node 160 .

[0085] The third node 160 may be within the coverage range 180 of the second node 140 , or may be outside the coverage range 180 of the second node 140 .

[0086] When the third node 160 is within the coverage of the second node 140 , the first node 120 may provide relaying for the third node 160 , and the third node 160 may also communicate directly with the second node 140 .

[0087] When the third node 160 is out of the coverage of the second node 140 , the first node 120 provides relaying for the third node 160 .

[0088] It should be noted that the premise for the first node 120 to provide relay for the third node is that the first node 120 needs to be within the coverage of the second node 120 .

[0089] The first node 120 and the third node 160 communicate via a D2D link.

[0090] Optionally, the first node 120 and the third node 160 are electronic devices with wireless network communication capabilities, such as terminal equipment, user equipment, mobile phones, tablet computers, multimedia players, e-book readers, laptop computers, vehicles, etc.

[0091] Optionally, the communication system may include multiple second nodes 140, multiple first nodes 120, and multiple third nodes 160, and one second node 140 may perform data communication with multiple first nodes 120 and multiple third nodes 160 respectively. Figure 1 Only one second node 140, two first nodes 120 and two third nodes 160 are shown for exemplary description, and the embodiments of the present application will not be described in detail.

[0092] In actual applications, the second node may send a first message for paging the third node to the first node to page the third node. Figure 2 , which shows a flow chart of a communication method provided by an exemplary embodiment of the present invention. This embodiment uses the method to apply Figure 1 The method is described in the communication system shown in FIG.

[0093] Step 201: A second node sends a first message to a first node, where the first message is used to indicate that the first message is used to page a third node.

[0094] Optionally, the first message includes at least one of the following: an identifier of the first node, an identifier of the third node, a system information update indication, system information, a paging indication, a service type of the third node, and a service priority of the third node. The first message carries fields such as a master system module (English: Master Information Block, MIB for short) and a system information block (English: Simple Biosphere Mode, SIB for short) related to the third node.

[0095] Optionally, when the second node sends the first message to the first node, the first message may be sent within a paging cycle of the third node, or the first message may be sent within a paging cycle of the first node.

[0096] Step 202: The first node receives a first message sent by the second node.

[0097] Optionally, before the first node receives the first message, the first node provides a relay service for the third node.

[0098] Since the first message received by the first node is used to page the third node, the first node needs to notify the third node. Optionally, at this time, the first node has established a D2D connection with the third node.

[0099] Step 203, an optional step, the first node establishes a D2D connection with the third node.

[0100] After receiving the first message, the first node detects whether a D2D connection has been established with the third node. If the first node has established a D2D connection with the third node, step 203 may not be performed. If the first node has not established a D2D connection with the third node, a D2D connection needs to be established with the third node first.

[0101] Optionally, the first node has established a D2D connection with the third node, which means that the first node has saved a configuration related to the D2D communication, and / or the first node has saved context information related to the D2D communication.

[0102] Optionally, the first node has established a D2D connection with the third node means that the second node has saved a configuration related to the D2D communication, and / or the second node has saved context information related to the D2D communication.

[0103] Optionally, the first node has established a D2D connection with the third node means that the first node and the second node both save configurations related to D2D communication between the first node and the second node, and the first node and the second node both save context information related to D2D communication between the first node and the second node.

[0104] Obviously, step 203 may also be performed before step 201 or after step 201 and before step 202. This embodiment does not limit the order of step 203, step 201, and step 202.

[0105] When the first message is used to page the third node, and the first node communicates with the third node through the first message, at least the following four situations may be included:

[0106] First case:

[0107] Step 204a: The first node sends a second message to the third node, where the second message is used to instruct the third node to access the network.

[0108] Optionally, the second message is used to page the third node to access the network, or to instruct the third node to access the network.

[0109] Specifically, after receiving the first message, the first node sends a second message to the third node.

[0110] After step 204a, that is, after the first node sends the second message to the third node, the first node may release the D2D connection between the first node and the third node; or terminate the D2D communication between the first node and the third node; or maintain the D2D communication between the first node and the third node; or maintain the D2D connection between the first node and the third node; or suspend the D2D connection between the first node and the third node.

[0111] Step 205a: The third node receives the second message sent by the first node.

[0112] Step 206a: The third node accesses the network or accesses the first node to communicate with the second node, or the communication mode of the third node is configured as a high-profile mode.

[0113] After receiving the second message, the third node accesses the network or accesses the first node to communicate with the second node or configures the communication mode of the third node to a high-configuration mode.

[0114] The high-profile mode includes at least one of the following:

[0115] The third node resides in the cell, and either receives a system message sent by the cell, or receives a synchronization signal sent by the cell, or receives a paging message sent by the cell, receives a system message sent by a site, or receives a synchronization signal sent by the site, or receives a paging message sent by the site, or performs cell selection, or performs cell reselection, or performs neighbor cell measurement, or performs same-frequency cell measurement, or performs inter-frequency cell measurement.

[0116] That is to say, the third node in the high-profile mode usually communicates directly with the site, which may be a base station, the second node, etc. Alternatively, it can be said that the third node in the high-profile mode usually communicates directly with a cell, such as a cell of a certain site, or a cell of the second node, etc.

[0117] Optionally, before the third node receives the second message sent by the first node, the third node may be in a low-configuration mode.

[0118] Among them, the low-profile mode refers to at least one of the following: the third node resides (stays) under the first node, or the third node only receives information sent by the first node, or the third node only receives signaling and / or data sent by the first node, or the third node only receives signaling and / or data sent by the D2D communication node, or the third node receives signaling and / or data sent by the first node, or the third node receives signaling and / or data sent by the D2D communication node; or the third node receives a paging message sent by the first node, or the third node receives a system message sent by the first node, or the third node receives a synchronization signal sent by the first node, or the third node does not receive a system message sent by the cell, or the third node does not receive a system message sent by the cell, or the third node does not receive a synchronization signal sent by the cell. The third node receives information sent by the D2D communication node, but does not perform at least one of the following operations: resides in a cell, receives a system message sent by the cell, receives a paging message sent by the cell, receives a synchronization signal sent by the cell, receives a system message sent by the site, receives a paging message sent by the site, receives a synchronization signal sent by the site, neighbor cell measurement, same-frequency cell measurement, and inter-frequency cell measurement, or the third node receives information sent by the D2D communication node, but does not perform at least one of the following operations: resides in a cell, receives a system message sent by the cell, receives a paging message sent by the cell, receives a synchronization signal sent by the cell, receives a system message sent by the site, receives a paging message sent by the site, receives a synchronization signal sent by the site, neighbor cell measurement, same-frequency cell measurement, and inter-frequency cell measurement.

[0119] That is, the third node in the low-profile mode usually does not communicate directly with the second node, but communicates with the first node.

[0120] Among them, when the third node resides under the first node, the third node performs at least one or more of the following operations: the third node only receives information sent by the first node, or the third node only receives signaling and / or data sent by the first node, or the third node only receives signaling and / or data sent by the D2D communication node, or the third node receives signaling and / or data sent by the first node, or the third node receives signaling and / or data sent by the D2D communication node, or the third node receives a paging message sent by the first node, or the third node receives a system message sent by the first node, or the third node receives a synchronization signal sent by the first node, or the third node does not receive a system message sent by the cell, or the third node does not receive a system message sent by the cell, or the third node does not receive a synchronization signal sent by the cell. The third node receives information sent by the D2D communication node, but does not perform at least one of the following operations: resides in a cell, receives a system message sent by the cell, receives a paging message sent by the cell, receives a synchronization signal sent by the cell, receives a system message sent by the site, receives a paging message sent by the site, receives a synchronization signal sent by the site, neighbor cell measurement, same-frequency cell measurement, and inter-frequency cell measurement, or the third node receives information sent by the D2D communication node, but does not perform at least one of the following operations: resides in a cell, receives a system message sent by the cell, receives a paging message sent by the cell, receives a synchronization signal sent by the cell, receives a system message sent by the site, receives a paging message sent by the site, receives a synchronization signal sent by the site, neighbor cell measurement, same-frequency cell measurement, and inter-frequency cell measurement.

[0121] The “information” in “the third node only receives the information sent by the first node” mentioned in this embodiment refers to signaling and / or data.

[0122] It should be noted that the signaling mentioned in the low-profile mode in this embodiment, such as "receiving signaling sent by the D2D communication node", "receiving signaling sent by the first node communication node", etc., the signaling is a paging message, or a system message, or a synchronization signal, or a reconfiguration message, or the second message mentioned in this embodiment, or the seventh message, etc. The "signaling" in this embodiment is not limited to the messages given as examples.

[0123] It should be noted that the sites mentioned in the "receiving system messages sent by the site", "receiving paging messages sent by the site" and "receiving synchronization sent by the site" in this embodiment are base station devices, such as eNB in ​​LTE, or NodeB in WCDMA, or BTS in GSM or CDMA, or micro stations, etc. This embodiment does not limit the base station type of the site.

[0124] The "system message sent by the receiving cell" mentioned in this embodiment is equivalent to the system message sent by the receiving site, the "paging message sent by the receiving cell" is equivalent to the paging message sent by the receiving site, and the "synchronization signal sent by the receiving cell" is equivalent to the synchronization signal sent by the receiving site.

[0125] It should be noted that the “D2D communication node” mentioned in this embodiment refers to a D2D communication device, including, for example, a first node, or other D2D devices synchronized with the first node, or a D2D device having the same synchronization source as the first node.

[0126] It should be noted that when the third node does not receive the second message, it can configure the communication mode to the high-profile mode by itself.

[0127] Optionally, after step 206a, the third node may release the D2D connection between the first node and the third node; or terminate the D2D communication between the first node and the third node; or maintain the D2D communication between the first node and the third node; or maintain the D2D connection between the first node and the third node; or suspend the D2D connection between the first node and the third node.

[0128] Second case:

[0129] Step 204b: The first node sends a second message to the third node, where the second message is used to instruct the third node to establish a communication connection with the second node.

[0130] After step 204b, that is, after the first node sends the second message to the third node, optionally, the first node may release the D2D connection between the first node and the third node; or terminate the D2D communication between the first node and the third node; or maintain the D2D communication between the first node and the third node; or maintain the D2D connection between the first node and the third node; or suspend the D2D connection between the first node and the third node.

[0131] Step 205b: The third node receives the second message sent by the first node.

[0132] Step 206b: The third node establishes a communication connection with the second node, or configures the communication mode of the third node to a high-profile mode.

[0133] It should be noted that when the third node does not receive the second message, it can configure the communication mode to the high-profile mode by itself.

[0134] The third case:

[0135] Step 204c: The first node sends a second message to the third node, where the second message is used to instruct the third node to communicate with the first node, or to page the third node.

[0136] In this case, after sending the second message to the third node, the first node usually continues to maintain the D2D connection between the first node and the third node.

[0137] Step 205c: The third node receives the second message sent by the first node.

[0138] Step 206c, the third node performs D2D communication with the first node; or, detects whether the third node has established a device-to-device D2D connection with the first node, and when the third node has not established a D2D connection with the first node, establishes a D2D connection with the first node; when the third node has established a D2D connection with the first node, performs D2D communication with the first node.

[0139] The fourth case:

[0140] Step 204d: The first node sends a second message to the third node, where the second message is used to indicate that the third node is configured as a high-configuration mode.

[0141] After step 204d, that is, after the first node sends the second message to the third node, the first node may release the D2D connection between the first node and the third node; or terminate the D2D communication between the first node and the third node; or maintain the D2D communication between the first node and the third node; or maintain the D2D connection between the first node and the third node; or suspend the D2D connection between the first node and the third node.

[0142] Step 205d: The third node receives the second message sent by the first node.

[0143] Step 206d: The third node configures the communication mode of the third node to a high-configuration mode.

[0144] After configuring the communication mode of the third node to the high-profile mode, the third node may release the D2D connection between the third node and the first node; or terminate the D2D communication between the third node and the first node.

[0145] It should be noted that when the third node does not receive the second message, it can configure the communication mode to the high-profile mode by itself.

[0146] In summary, in the communication method provided by the embodiment of the present invention, the first node sends a second message to the third node, and the second message is used to instruct the paging of the third node to access the network, thereby solving the relatively large problem that the third node must maintain the connection with the second node in order to perform D2D communication during the D2D communication. In particular, before the first node sends the second message to the second node, the first node can optionally determine whether to provide a relay for the third node to realize the communication between the third node and the second node, or to instruct the third node to access the network to directly communicate information or business with the second node based on the first message sent by the second node, thereby achieving the purpose of effectively saving power while receiving the information sent by the base station during the D2D communication of the third node.

[0147] In actual applications, the second node may send a first message to the first node for instructing the third node to access the network or instructing the third node to communicate with the second node, so as to instruct the third node to access the network. Figure 3 , which shows a flow chart of a communication method provided by another exemplary embodiment of the present invention. This embodiment uses the method to apply Figure 1 The method is described in the communication system shown in FIG.

[0148] Step 301, an optional step, a second node sends a first message to a first node, where the first message instructs a third node to access a network, or instructs the third node to communicate with the second node.

[0149] Optionally, the first message includes at least one of the following: an identifier of the first node, an identifier of the third node, a system information update indication, system information, a paging indication, a service type of the third node, and a service priority of the third node. The first message carries fields such as MIB and SIB related to the third node.

[0150] Optionally, when the second node sends the first message to the first node, the first message may be sent within a paging cycle of the third node, or the first message may be sent within a paging cycle of the first node.

[0151] Step 302: The first node receives a first message sent by the second node.

[0152] Optionally, before the first node receives the first message, the first node provides a relay service for the third node.

[0153] Since the first message received by the first node is used to instruct the third node to access the network, the first node needs to notify the third node. At this time, the first node needs to ensure that a D2D connection is established with the third node.

[0154] Step 303, an optional step, the first node establishes a D2D connection with the third node.

[0155] After receiving the first message, the first node detects whether a D2D connection has been established with the third node. If the first node has established a D2D connection with the third node, step 303 may not be performed. If the first node has not established a D2D connection with the third node, a D2D connection needs to be established with the third node first.

[0156] Obviously, step 303 may also be performed before step 301 or after step 301 and before step 302. This embodiment does not limit the order of step 303, step 301, and step 302.

[0157] When the first message is used to instruct the third node to access the network, and the first node communicates with the third node through the first message, at least the following two situations may be included:

[0158] First case:

[0159] Step 304a: The first node sends a second message to the third node, where the second message is used to instruct the third node to establish a communication connection with the second node.

[0160] After step 304a, that is, after the first node sends the second message to the third node, optionally, the first node may release the D2D connection between the first node and the third node; or terminate the D2D communication between the first node and the third node; or maintain the D2D communication between the first node and the third node; or maintain the D2D connection between the first node and the third node; or suspend the D2D connection between the first node and the third node.

[0161] Step 305a: The third node receives the second message sent by the first node.

[0162] Step 306a: The third node establishes a communication connection with the second node, or configures the communication mode of the third node to a high-profile mode.

[0163] After receiving the second message, the third node accesses the network or accesses the first node to communicate with the second node.

[0164] Optionally, before the third node receives the second message sent by the first node, the third node may be in a low-configuration mode.

[0165] After the third node receives the second message for instructing the third node to access the network, the third node can access the network, or establish a communication connection with the first node. At this time, the third node can enter the high-profile mode.

[0166] When the third node establishes a communication connection with the second node, or configures the communication mode of the third node to the high-profile mode, the third node may optionally release the D2D connection between the third node and the first node; or terminate the D2D communication between the third node and the first node.

[0167] It should be noted that when the third node does not receive the second message, it can configure the communication mode to the high-profile mode by itself.

[0168] Second case:

[0169] Step 304b: The first node sends a second message to the third node, where the second message is used to indicate that the third node is configured as a high-configuration mode.

[0170] After step 304b, that is, after the first node sends the second message to the third node, the first node may release the D2D connection between the first node and the third node; or terminate the D2D communication between the first node and the third node; or maintain the D2D communication between the first node and the third node; or maintain the D2D connection between the first node and the third node; or suspend the D2D connection between the first node and the third node.

[0171] Step 305b: The third node receives the second message sent by the first node.

[0172] Step 306b: The third node configures the communication mode of the third node to a high-configuration mode.

[0173] After the third node configures the communication mode of the third node to the high-profile mode, the third node may release the D2D connection between the third node and the first node; or terminate the D2D communication between the third node and the first node.

[0174] It should be noted that when the third node does not receive the second message, it can configure the communication mode to the high-profile mode by itself.

[0175] In summary, in the communication method provided by the embodiment of the present invention, the first node sends a second message to the third node, and the second message is used to instruct the third node to establish a communication connection with the second node, thereby solving the relatively large problem that the third node must maintain a connection with the second node in order to perform D2D communication during the D2D communication. In particular, before the first node sends the second message to the second node, the first node can optionally determine whether to provide a relay for the third node to realize the communication between the third node and the second node, or to instruct the third node to access the network to directly communicate information or business with the second node based on the first message sent by the second node, thereby achieving the purpose of effectively saving power while receiving the information sent by the base station during the D2D communication of the third node.

[0176] In actual applications, the second node may send a first message to the first node for instructing the first node to provide a relay service for the third node, so as to instruct the first node to provide a relay service for the third node. Figure 4 , which shows a flow chart of a communication method provided by another exemplary embodiment of the present invention. Figure 1 The method is described in the communication system shown in FIG.

[0177] Step 401, an optional step, the second node sends a first message to the first node, where the first message instructs the first node to provide a relay service for the third node.

[0178] Optionally, the first message includes at least one of the following: an identifier of the first node, an identifier of the third node, a system information update indication, system information, a paging indication, a service type of the third node, and a service priority of the third node. The first message carries fields such as MIB and SIB related to the third node.

[0179] Optionally, when the second node sends the first message to the first node, the first message may be sent within a paging cycle of the third node, or the first message may be sent within a paging cycle of the first node.

[0180] Step 402: The first node receives a first message sent by the second node.

[0181] Optionally, before the first node receives the first message, the first node provides a relay service for the third node.

[0182] Since the first message received by the first node is used to instruct the first node to provide a relay service for the third node, the first node needs to notify the third node. At this time, the first node needs to ensure that a D2D connection is established with the third node.

[0183] Step 403, an optional step, the first node establishes a D2D connection with the third node.

[0184] After receiving the first message, the first node detects whether a D2D connection has been established with the third node. If the first node has established a D2D connection with the third node, step 403 may not be performed. If the first node has not established a D2D connection with the third node, a D2D connection needs to be established with the third node first.

[0185] Obviously, step 403 may also be performed before step 401 or after step 401 and before step 402. This embodiment does not limit the order of step 403, step 401, and step 402.

[0186] When the first message is used to instruct the first node to provide a relay service for the third node, and the first node communicates with the third node through the first message, at least the following two situations may be included:

[0187] First case:

[0188] Step 404a: The first node sends a second message to the third node, where the second message is used to instruct the first node to provide a relay service for the third node.

[0189] Specifically, after the first node establishes a D2D connection with the third node, the first node may send a second message to the third node through the D2D link.

[0190] After step 404a, that is, after the first node sends the second message to the third node, the first node may release the D2D connection between the first node and the third node; or terminate the D2D communication between the first node and the third node; or maintain the D2D communication between the first node and the third node; or maintain the D2D connection between the first node and the third node; or suspend the D2D connection between the first node and the third node.

[0191] Step 405a: The third node receives the second message sent by the first node.

[0192] Step 406a: The third node accesses the network or accesses the first node to communicate with the second node, or the communication mode of the third node is configured as a high-profile mode.

[0193] After receiving the second message, the third node accesses the first node to communicate with the second node.

[0194] Optionally, before the third node receives the second message sent by the first node, the third node may be in a low-configuration mode.

[0195] After the third node receives the second message for instructing the first node to provide a relay service for the third node, the third node can access the network, and at this time, the third node can enter the high-configuration mode.

[0196] After the third node configures the communication mode of the third node to the high-profile mode, the third node may release the D2D connection between the third node and the first node; or terminate the D2D communication between the third node and the first node.

[0197] It should be noted that when the third node does not receive the second message, it can configure the communication mode to the high-profile mode by itself.

[0198] Second case:

[0199] Step 404b: The first node sends a second message to the third node, where the second message is used to instruct the third node to communicate with the first node.

[0200] After step 404b, that is, after the first node sends the second message to the third node, the first node may maintain the D2D communication between the first node and the third node; or, maintain the D2D connection between the first node and the third node.

[0201] Step 405b: The third node receives the second message sent by the first node.

[0202] Step 406b, the third node performs D2D communication with the first node; or, detects whether the third node has established a device-to-device D2D connection with the first node, and when the third node has not established a D2D connection with the first node, establishes a D2D connection with the first node; when the third node has established a D2D connection with the first node, performs D2D communication with the first node.

[0203] In summary, in the communication method provided by the embodiment of the present invention, the first node sends a second message to the third node, and the second message is used to instruct the first node to provide a relay service for the third node, thereby solving the relatively large problem that the third node must maintain a connection with the second node in order to perform D2D communication during the D2D communication. In particular, before the first node sends the second message to the second node, the first node can optionally determine whether to provide a relay for the third node to realize the communication between the third node and the second node, or to instruct the third node to access the network to directly communicate information or business with the second node based on the first message sent by the second node, thereby achieving the purpose of effectively saving power while receiving the information sent by the base station during the D2D communication of the third node.

[0204] In actual applications, the second node can control the communication mode of the third node. For example, the second node can send a first message to the first node for instructing the third node to be configured in a low-profile mode, so as to instruct the third node to be configured in a low-profile mode. Figure 5 , which shows a flow chart of a communication method provided by another exemplary embodiment of the present invention. Figure 1 The method is described in the communication system shown in FIG.

[0205] Step 501, an optional step, the second node sends a first message to the first node, where the first message indicates that the third node is configured as a low-profile mode.

[0206] Optionally, the first message includes at least one of the following: an identifier of the first node, an identifier of the third node, a system information update indication, system information, a paging indication, a service type of the third node, and a service priority of the third node. The first message carries fields such as MIB and SIB related to the third node.

[0207] Optionally, when the second node sends the first message to the first node, the first message may be sent within a paging cycle of the third node, or the first message may be sent within a paging cycle of the first node.

[0208] It should be noted that when the third node does not receive the first message, it can configure the communication mode to the low-profile mode by itself.

[0209] Step 502: The first node receives a first message sent by the second node.

[0210] Optionally, before the first node receives the first message, the first node provides a relay service for the third node.

[0211] Since the first message received by the first node is used to indicate that the third node is configured as the low-profile mode, the first node needs to notify the third node. At this time, the first node needs to ensure that a D2D connection is established with the third node.

[0212] Step 503, an optional step, the first node establishes a D2D connection with the third node.

[0213] After receiving the first message, the first node detects whether a D2D connection has been established with the third node. If the first node has established a D2D connection with the third node, step 503 may not be performed. If the first node has not established a D2D connection with the third node, a D2D connection needs to be established with the third node first.

[0214] Obviously, step 503 may also be performed before step 501 or after step 501 and before step 502. This embodiment does not limit the order of step 503, step 501, and step 502.

[0215] Step 504: The first node sends a second message to the third node, where the second message is used to indicate that the third node is configured as a low-profile mode.

[0216] Specifically, after the first node establishes a D2D connection with the third node, the first node may send a second message to the third node through the D2D link.

[0217] After step 504, that is, after the first node sends the second message to the third node, the first node may maintain the D2D communication between the first node and the third node; or, maintain the D2D connection between the first node and the third node.

[0218] Step 505: The third node receives the second message sent by the first node.

[0219] Step 506: The third node configures the communication mode of the third node to a low-profile mode.

[0220] After the third node configures the communication mode of the third node to the low-profile mode, the third node continues to maintain the D2D connection with the first node.

[0221] It should be noted that when the third node does not receive the first message, it can configure the communication mode to the low-profile mode by itself.

[0222] In summary, in the communication method provided by the embodiment of the present invention, the first node sends a second message to the third node, and the second message is used to indicate that the third node is configured as a low-profile mode, thereby solving the relatively large problem that the third node must maintain a connection with the second node in order to perform D2D communication during the D2D communication. In particular, before the first node sends the second message to the second node, the first node can optionally determine whether to provide a relay for the third node to achieve communication between the third node and the second node, or to instruct the third node to access the network to directly communicate information or services with the second node based on the first message sent by the second node, thereby achieving the purpose of effectively saving power while receiving information sent by the base station during the D2D communication of the third node.

[0223] In actual applications, the second node can control the communication mode of the third node. For example, the second node can send a first message to the first node for instructing the third node to be configured as a high-profile mode, so as to instruct the third node to be configured as a high-profile mode. Figure 6 , which shows a flow chart of a communication method provided by another exemplary embodiment of the present invention. Figure 1 The method is described in the communication system shown in FIG.

[0224] Step 601, an optional step, the second node sends a first message to the first node, where the first message is used to indicate that the third node is configured as a high-configuration mode.

[0225] Optionally, the first message includes at least one of the following: an identifier of the first node, an identifier of the third node, a system information update indication, system information, a paging indication, a service type of the third node, and a service priority of the third node. The first message carries fields such as MIB and SIB related to the third node.

[0226] Optionally, when the second node sends the first message to the first node, the first message may be sent within a paging cycle of the third node, or the first message may be sent within a paging cycle of the first node.

[0227] Step 602: The first node receives a first message sent by the second node.

[0228] Optionally, before the first node receives the first message, the first node provides a relay service for the third node.

[0229] Since the first message received by the first node is used to indicate that the third node is configured as the high-configuration mode, the first node needs to notify the third node. At this time, the first node needs to ensure that a D2D connection is established with the third node.

[0230] Step 603, an optional step, the first node establishes a D2D connection with the third node.

[0231] After receiving the first message, the first node detects whether a D2D connection has been established with the third node. If the first node has established a D2D connection with the third node, step 603 may not be performed. If the first node has not established a D2D connection with the third node, a D2D connection needs to be established with the third node first.

[0232] Obviously, step 603 may also be performed before step 601 or after step 601 and before step 602. This embodiment does not limit the order between step 603 and step 601 and step 602.

[0233] Step 604: The first node sends a second message to the third node, where the second message is used to indicate that the third node is configured as a high-configuration mode.

[0234] After step 604, that is, after the first node sends the second message to the third node, the first node may release the D2D connection between the first node and the third node; or terminate the D2D communication between the first node and the third node; or maintain the D2D communication between the first node and the third node; or maintain the D2D connection between the first node and the third node; or suspend the D2D connection between the first node and the third node.

[0235] Step 605: The third node receives the second message sent by the first node.

[0236] Step 606: The third node configures the communication mode of the third node to a high-profile mode.

[0237] After the third node configures the communication mode of the third node to the high-profile mode, the third node may release the D2D connection between the third node and the first node; or terminate the D2D communication between the third node and the first node.

[0238] It should be noted that when the third node does not receive the second message, it can configure the communication mode to the high-profile mode by itself.

[0239] In summary, in the communication method provided by the embodiment of the present invention, the first node sends a second message to the third node, and the second message is used to indicate that the third node is configured as a high-profile mode, thereby solving the relatively large problem that the third node must maintain a connection with the second node in order to perform D2D communication during the D2D communication. In particular, before the first node sends the second message to the second node, the first node can optionally determine whether to provide a relay for the third node to achieve communication between the third node and the second node, or to instruct the third node to access the network to directly communicate information or services with the second node based on the first message sent by the second node, thereby achieving the purpose of effectively saving power while receiving information sent by the base station during the D2D communication of the third node.

[0240] In one possible implementation, Figure 7 FIG. 1 is a flow chart of a communication method provided by another exemplary embodiment of the present invention. Figure 7 , the third node can send a sixth message to the first node to inform the first node of the communication mode of the third node or instruct the first node to perform a predetermined operation.

[0241] Step S1: The first node sends a second message to the third node.

[0242] Among them, the second message is used to instruct the paging third node to access the network, or to instruct the third node to establish a communication connection with the second node, or to instruct the first node to provide relay service for the third node, or to instruct the third node to communicate with the first node, or to instruct the third node to be configured as a low-configuration mode, or to instruct the third node to be configured as a high-configuration mode, or to instruct the third node to update the system message.

[0243] Correspondingly, the third node receives the second message sent by the first node.

[0244] Step S2: The third node sends a sixth message to the first node.

[0245] Optionally, the sixth message is used to indicate that the third node receives a paging message from the first node, or indicates that the third node receives a system message from the first node, or indicates that the mode configured by the third node is a high-profile mode, or indicates that the mode configured by the third node is a low-profile mode.

[0246] Correspondingly, the first node receives the sixth message sent by the third node.

[0247] It should be noted that, in this embodiment, step S2 may be implemented after steps 204a to 204d, steps 304a to 304b, steps 404a to 404b, step 504, and step 604.

[0248] Among them, before the second node sends the first message to the first node, if the first node has established a D2D connection with the third node, step S1 can be implemented before or after steps 201, 202, 301, 302, 401, 402, 501, 502, 601, and 602.

[0249] In another possible implementation, Figure 8 FIG. 1 is a flow chart of a communication method provided by another exemplary embodiment of the present invention. Figure 8 The first node may also send a seventh message to the third node to instruct the third node to change the communication mode or perform a predetermined operation.

[0250] Step S3: The first node sends a seventh message to the third node.

[0251] Optionally, the seventh message indicates that the third node receives a paging message from the first node, or indicates that the third node receives a system message from the first node, or indicates that the mode configured by the third node is a high-profile mode, or indicates that the mode configured by the third node is a low-profile mode.

[0252] Correspondingly, the third node receives the seventh message sent by the first node.

[0253] Step S4: The first node sends a second message to the third node.

[0254] Among them, the second message is used to instruct the paging third node to access the network, or to instruct the third node to establish a communication connection with the second node, or to instruct the first node to provide relay service for the third node, or to instruct the third node to communicate with the first node, or to instruct the third node to be configured as a low-configuration mode, or to instruct the third node to be configured as a high-configuration mode, or to instruct the third node to update the system message.

[0255] Correspondingly, the third node receives the second message sent by the first node.

[0256] It should be noted that, in this embodiment, step S3 may be implemented after steps 204a to 204d, steps 304a to 304b, steps 404a to 404b, step 504, and step 604.

[0257] In a possible implementation manner, before the second node sends the first message to the first node, the second node obtains information related to the third node and information related to the first node from the MME.

[0258] Step S5, optional step, the second node receives the tenth message.

[0259] Optionally, the tenth message is used to indicate pairing information between the third node and the first node, wherein the pairing information refers to information that the first node is a relay node of the third node, and the pairing information includes at least one of the following: an identifier of the first node, an identifier of the third node.

[0260] Step S6: The second node sends an eighth message to the MME.

[0261] Optionally, the eighth message is used to notify the MME of the information of the third node and the information of the first node.

[0262] Specifically, the eighth message is used to indicate pairing information between the third node and the first node, and the pairing information includes information that the first node is a relay node of the third node, information of the third node (such as an identifier of the third node), and information of the first node (such as an identifier of the first node). After receiving the eighth message, the MME identifies the third node through the information of the third node, identifies the first node through the information of the first node, and further determines that the third node and the first node are a pair of D2D communication nodes, wherein the first node is a relay node of the third node.

[0263] When there is business for a third node, the MME sends a paging message to page the third node. Since the MME knows that the first node is the relay node of the third node, the MME no longer directly pages the third node when sending the paging message, but instead sends a paging message (such as the ninth message) to page the first node. The paging message includes information about the first node and information about the third node.

[0264] Step S7: The second node receives the ninth message sent by the MME.

[0265] Optionally, the ninth message is used to page the first node.

[0266] Optionally, the ninth message includes information about the first node and information about the third node, wherein the information about the first node is an identifier of the first node, or an identifier (index) of the first node, and the information about the third node may be an identifier of the third node, or an identifier of the third node.

[0267] Correspondingly, after receiving the ninth message sent by the MME, the second node learns the third node that needs to be paged. When the second node learns that the first node is a relay node of the third node, the second node sends a paging message (first message) to the first node, and the first message is sent within the paging cycle of the first node. After the first node receives the first message, it confirms that it is the third node that the second node is looking for based on the content contained in the first message, and sends the second message to the third node.

[0268] For example, when the first message received by the first node is used to page the third node, the first node sends a second message to the third node, where the second message is used to instruct the third node to access the network or instruct the third node to communicate with the first node.

[0269] Optionally, the ninth message is used to notify the second node to page the third node.

[0270] Optionally, the ninth message is used to indicate that there is a third node service that needs to be transmitted.

[0271] Optionally, the ninth message is used to notify the second node to page the third node

[0272] Optionally, the ninth message is used to indicate that there is a third node service that needs to be transmitted.

[0273] After receiving the ninth message sent by the MME, the second node may send a first message to the first node according to the content of the ninth message, where the first message is used to indicate that the first message is used to page the third node, or to instruct the third node to access the network, or to instruct the first node to provide relay service for the third node. Step S5, step S6, and step S7 may be implemented before 201, step 301, step 401, step 501, and step 601.

[0274] It should be noted that this embodiment does not specifically limit the order of implementing step S5, step S6 and step S7.

[0275] It should be noted that, in this embodiment, the first message includes at least one of the following: an identification of the first node, an identification of the third node, a system information update indication, system information, a paging indication, a service type of the third node, and a service priority of the third node.

[0276] It should be noted that, in this embodiment, the second message includes at least one of the following: an identification of the first node, an identification of the third node, a system information update indication, system information, a paging indication, a service type of the third node, and a service priority of the third node.

[0277] The service priority may also be equivalent to the service QoS.

[0278] In a possible implementation, in order to enable the third node to perform D2D communication with the first node, the third node can update the system message in time. Fig. 9 , which shows a flow chart of a method for updating system information of a third node provided by an exemplary embodiment of the present invention. In this embodiment, the system information update is realized by implementing the following steps 701 to 704.

[0279] Step 701: A second node sends a first message to a first node, where the first message indicates a system message update.

[0280] The system message includes information such as MIB and SIB related to the third node.

[0281] Step 702: After receiving the first message, the first node sends a second message to the third node, where the second message is used to instruct the third node to perform system information update.

[0282] Step 703, an optional step, after receiving the second message, the third node listens to the system message, performs system message update, or configures the communication mode of the third node to a high-profile mode.

[0283] It should be noted that when the third node does not receive the second message, it can configure the communication mode to the high-profile mode by itself.

[0284] Step 704: After completing the system message update, the third node configures the third node to a low-configuration mode.

[0285] Preferably, after the system message update is completed and the third node meets a predetermined condition, the third node is configured to a low-configuration mode.

[0286] Optionally, the predetermined condition is that the third node receives an instruction for instructing to put the communication mode into a low-profile mode.

[0287] Optionally, the predetermined condition is that the remaining power of the third node is lower than a predetermined power threshold.

[0288] It should be noted that steps 701 to 704 may be implemented before or after any step of steps 201 to 203, steps 204a to 204d, steps 205a to 205d, and steps 206a to 206d; may be implemented before or after any step of steps 301 to 303, steps 304a, 304b, steps 305a, 305b, 306a, and 306b; may be implemented before or after any step of steps 401 to 403, steps 404a, 404b, steps 405a, 405b, 406a, and 406b; may be implemented before or after any step of steps 501 to 506; and may be implemented before or after any step of steps 601 to 606.

[0289] In another possible implementation, see Figure 2After the first node sends the second message to the third node, if the first node receives the third message sent by the third node, the D2D connection between the first node and the third node is operated using step 801a or step 801b.

[0290] Step 801a: The third node sends a third message to the first node.

[0291] Optionally, if the third node receives the second information sent by the first node, the third node sends a third message to the first node.

[0292] Optionally, if after receiving the second message, the third node successfully accesses the network, or fails to access the network, or the third node successfully establishes a communication connection with the second node, or the third node fails to establish a communication connection with the second node, the third node sends a third message to the first node.

[0293] Optionally, if the third node configures itself to a high-configuration mode after receiving the second message, the third node sends a third message to the first node.

[0294] Optionally, if the third node receives a system message or performs a system message update after receiving the second message, the third node sends a third message to the first node.

[0295] Optionally, if the third node successfully accesses the network within a predetermined time after receiving the second message, or successfully establishes a communication connection with the second node, the third node sends a third message to the first node.

[0296] Optionally, if access to the network fails within a predetermined time period after receiving the second message, or the second node fails to establish a communication connection, the third node sends a third message to the first node.

[0297] Here, "accessing the network" refers to a third node accessing a site or a base station. In particular, the site may be a second node.

[0298] Correspondingly, the first node receives the third message sent by the third node.

[0299] It should be noted that step 801a can be implemented after step 205a, step 206a, step 205b, step 206b, step 205c, step 206c, step 205d, step 206d, step 305a, step 306a, step 305b, step 306b, step 405a, step 406a, step 405b, step 406b, step 505, step 506, step 605, and step 606.

[0300] Step 801b: If the third node successfully accesses the network within a predetermined time after receiving the second message, or successfully establishes a communication connection with the second node, the third node sends a third message to the first node.

[0301] Optionally, the third message indicates that the third node successfully accesses the network.

[0302] Optionally, the third message indicates that the paging of the third node is successful.

[0303] Optionally, the third message indicates that the third node successfully establishes a communication connection with the second node.

[0304] Optionally, the third message indicates that the third node has been configured as a high-configuration mode.

[0305] Optionally, the third message is used to reply to confirm communication with the first node.

[0306] Optionally, the third message indicates that the third node has updated the system information.

[0307] Correspondingly, the first node receives the third message sent by the third node.

[0308] It should be noted that step 801b can be implemented after step 205a, step 206a, step 205b, step 206b, step 205d, step 206d, step 305a, step 306a, step 305b, step 306b, step 405a, step 406a, step 605, and step 606.

[0309] Correspondingly, if the third message sent by the third node is received within the predetermined time from sending the second message, the first node continues to maintain the D2D connection between the first node and the third node. If the third message sent by the third node is not received within the predetermined time from sending the second message, the first node stops maintaining the D2D connection between the first node and the third node.

[0310] It should be noted that step 1101 can be implemented after step 204a, can be implemented after step 304a, can be implemented after step 404a, can be implemented after step 504, can be implemented after step 604, and can be implemented after step 703.

[0311] In another possible implementation, after the first node sends the second message to the third node, the second node may send a fourth message to the first node to inform the first node that the third node and the second node have successfully accessed the network or the paging has been successful.

[0312] The first node will receive the fourth message sent by the second node. After the first node receives the fourth message sent by the second node, the first node operates the D2D connection between the first node and the third node using the following operation steps.

[0313] Step S7: The second node sends a fourth message to the first node.

[0314] Optionally, the fourth message is used to indicate that the third node successfully accesses the network.

[0315] Optionally, the fourth message is used to indicate that the paging of the third node is successful.

[0316] Correspondingly, the first node receives the fourth message sent by the second node.

[0317] Optionally, the first node releases the D2D connection between the first node and the third node.

[0318] Optionally, the first node terminates the D2D communication between the first node and the third node.

[0319] Optionally, the first node maintains D2D communication between the first node and the third node.

[0320] Optionally, the first node maintains a D2D connection between the first node and the third node.

[0321] It should be noted that step S7 can be implemented after step 206a, step 206b, step 206d, step 306a, step 306b, step 406a, and step 606.

[0322] Alternatively, after the first node sends the second message to the third node, if the first node does not have the authority to operate the D2D connection between the first node and the third node, the first node may send a fifth message to the second node to instruct the second node to operate the D2D link between the first node and the third node.

[0323] Step S8: The first node sends a fifth message to the second node.

[0324] Optionally, the fifth message indicates releasing relevant configuration of the D2D connection between the first node and the third node.

[0325] Optionally, the fifth message indicates releasing the D2D connection between the first node and the third node.

[0326] Correspondingly, the second node receives the fifth message sent by the first node.

[0327] Optionally, the second node releases relevant configuration of the D2D connection between the first node and the third node.

[0328] Optionally, the second node releases the D2D connection between the first node and the third node.

[0329] It should be noted that step S8 can be implemented after step 204a, step 204b, step 204d, step 304a, step 304b, and step 604.

[0330] In a possible implementation, when the first message is used to page the third node, if the service priorities are different, then when the first node sends the second message to the third node, there are at least the following situations but are not limited to the listed situations:

[0331] The service priority of the third node is divided into the first priority and the second priority, and the first priority is higher than the second priority. So when the service priority of the third node is the first priority, please refer to the first and third cases, and when the service priority of the third node is the second priority, please refer to the second and fourth cases.

[0332] In the first case, when the service priority of the third node is the first priority, the first node sends the second message to the third node.

[0333] Optionally, the second message indicates that the third node accesses the network.

[0334] In the second case, when the service priority of the third node is the second priority, the first node sends the second message to the third node.

[0335] Optionally, the second message instructs the first node to provide relay service for the second node and the third node.

[0336] or,

[0337] In the third case, when the first message is used to page the third node, according to the service priority of the third node, if the service priority of the third node is the first priority, a second message is sent to the third node, and the second message is used to instruct the third node to access the network.

[0338] In the fourth case, when the first message is used to page the third node, according to the service priority of the third node, if the service priority of the third node is the second priority, a second message is sent to the third node, and the second message is used to instruct the third node to communicate with the first node.

[0339] Optionally, for example, the first message includes the service priority of the third node, so the first node sends the second message to the second node according to the priority of the third node.

[0340] It should be understood that, as used herein, the singular forms "a", "an", "the" are intended to include the plural forms as well, unless the context clearly supports an exception. It should also be understood that, as used herein, "and / or" refers to any and all possible combinations of one or more of the associated listed items.

[0341] Please refer to Fig.10 , which shows a block diagram of a device provided by an embodiment of the present invention. The device may include: a processor 1010, a memory 1020, a transceiver 1030, a bus and other connecting devices. The memory 1020 and the transceiver 1030 are connected to the processor 1010 via a bus or other connection methods. The processor 1010 includes one or more processing cores. The processor 1010 executes various functional applications and data processing by running software programs and modules. The processor 1010 includes an arithmetic logic unit, a register unit, and a control unit, etc. It can be an independent central processing unit, or it can also be an embedded processor, such as a microprocessor (English: Micro Processor Unit; abbreviation: MPU), a microcontroller (English: Microcontroller Unit; abbreviation: MCU) or a digital signal processor (English: Embedded Digital Signal Processor; abbreviation: EDSP), etc.

[0342] The memory 1020 may be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk. The memory 1020 may be used to store executable instructions such as software programs and modules.

[0343] The devices can be divided into mobile devices and network devices, wherein the mobile devices are the first node and the third node, and the network devices are the second node.

[0344] When the device is a mobile device, the device further includes: an input / output component, a display device, a microphone, etc. Among them, the input / output component includes a display for displaying information and one or more input devices such as a touch panel, a physical keyboard, a function key (such as a volume control button, a switch button, etc.), a trackball, a mouse, a joystick, etc. for the user to input information. The display device is used to display information input by the user or information provided to the user and various menus of the mobile device. The display device may include a display panel 441. Optionally, the display panel may be configured in the form of a liquid crystal display (English: LiquidCrystal Display; abbreviation: LCD), an organic light-emitting diode (English: Organic Light-Emitting Diode; abbreviation: OLED), etc. The microphone may provide an audio interface between the user and the device. Among them, the display device and the input device are connected to the processor 1010 via a bus or other connection methods.

[0345] When the device is a network device, the device further includes: a power supply component, a wired or wireless network interface, an input / output (I / O) interface, etc. The power supply component is used to provide power management functions for the device, and the wired or wireless network interface is used to connect the device to the network.

[0346] Please refer to Fig.11 , which shows a block diagram of a communication device provided by an embodiment of the present invention. The communication device can be implemented as all or part of a first node through software, hardware, or a combination of both. The first node may include: a receiving unit 1101, an executing unit 1102, and a sending unit 1103.

[0347] The receiving unit 1101 is used to implement the function of the above step 202.

[0348] The execution unit 1102 is used to implement the function of the above step 203.

[0349] The sending unit 1103 is used to implement the function of at least one of the above steps 204a to 204d.

[0350] Relevant details can be referred to in conjunction with the above method embodiment.

[0351] In another optional embodiment, the receiving unit 1101 is used to implement the function of at least one of step 302 , step 402 , step 502 , and step 602 .

[0352] The execution unit 1102 is used to implement the function of at least one of step 303 , step 403 , step 503 , and step 603 .

[0353] The sending unit 1103 is used to implement the function of at least one of the steps 304a to 304b, steps 404a to 404b, step 504, step 604, step S1, step S3, step S4, and step 702.

[0354] It should be noted that the above-mentioned receiving unit 1101 and sending unit 1103 may be implemented by a transceiver of a mobile device; and the above-mentioned execution unit 1102 may be implemented by a processor of a mobile device.

[0355] Please refer to Fig.12 , which shows a block diagram of a communication device provided by another embodiment of the present invention. The communication device can be implemented as all or part of the third node through software, hardware or a combination of both. The second node may include: a receiving unit 1201, an executing unit 1202 and a sending unit 1203.

[0356] The receiving unit 1201 is used to implement the function of at least one of the above steps 205a to 205d.

[0357] The execution unit 1202 is used to implement the function of at least one of the above steps 206a to 206d.

[0358] The sending unit 1203 is used to implement the function of at least one of the above steps 801a to 801b.

[0359] Relevant details can be referred to in conjunction with the above method embodiment.

[0360] In another optional embodiment, the receiving unit 1201 is used to implement the function of at least one of steps 305a to 305b, steps 405a to 405b, step 505, and step 605.

[0361] The execution unit 1202 is used to implement the function of at least one of steps 306a to 306b, steps 406a to 406b, step 506, step 606, step 703, and step 704.

[0362] The sending unit 1203 is used to implement the function of the above step S2.

[0363] It should be noted that the above-mentioned receiving unit 1201 and sending unit 1203 may be implemented by a transceiver of a mobile device; and the above-mentioned execution unit 1202 may be implemented by a processor of a mobile device.

[0364] Please refer to Fig.13, which shows a block diagram of a communication device provided by another embodiment of the present invention. The communication device can be implemented as all or part of the second node through software, hardware or a combination of both. The third node may include: a sending unit 1301.

[0365] The sending unit 1301 is used to implement the function of the above step 201.

[0366] Relevant details can be referred to in conjunction with the above method embodiment.

[0367] In another optional embodiment, the sending unit 1301 is used to implement the function of at least one of the steps 301, 401, 501, 601 and 701.

[0368] It should be noted that the sending unit 1301 may be implemented by a transceiver of a network device.

[0369] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0370] A person skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware or by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a disk or an optical disk, etc.

[0371] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A communication method, characterized in that: Applied to the first node, the method comprises: receiving a first message from a second node, where the first message is used to page a third node, or to instruct the third node to access a network, or to instruct the first node to provide a relay service for the third node, or to instruct to update a system message; sending a second message to the third node, where the second message is used to instruct the third node to access the network, or to instruct the third node to communicate with the second node through the first node, or to instruct the third node to update a system message, so that the third node does not perform an operation of periodically listening to messages sent by the second node; The second node is a service site of the first node, or the second node is a service site of the third node, or the second node is a service site of the first node and the third node; Wherein, when the first message instructs the third node to access the network, the second message is sent to the third node, and the second message is used to instruct the third node to establish a communication connection with the second node; When the first message is used to page the third node, the second message is sent to the third node, where the second message is used to instruct the third node to access the network or to instruct the third node to communicate with the first node; The second message is sent to the third node when the first message indicates that the first node provides a relay service for the third node, and the second message indicates that the third node communicates with the first node.

2. The method according to claim 1, characterized in that Sending the second message to the third node includes: The second message is sent to the third node based on the service priority of the third node, where the second message instructs the third node to access the network or instructs the third node to communicate with the first node.

3. A communication device, characterized in that: The communication device is applied to a first node, and the device includes: a unit for receiving a first message from a second node, wherein the first message is used to page a third node, or to instruct the third node to access a network, or to instruct the first node to provide a relay service for the third node, or to instruct to update a system message; a unit configured to send a second message to the third node, wherein the second message is used to instruct the third node to access the network, or to instruct the third node to communicate with the second node through the first node, or to instruct the third node to update a system message, so that the third node does not perform an operation of periodically listening to messages sent by the second node; The second node is a service site of the first node, or the second node is a service site of the third node, or the second node is a service site of the first node and the third node; wherein the unit is configured to send the second message to the third node when the first message indicates that the third node accesses the network, wherein the second message is used to instruct the third node to establish a communication connection with the second node; or a unit configured to send the second message to the third node when the first message is used to page the third node, the second message being used to instruct the third node to access the network or to instruct the third node to communicate with the first node; or A unit for sending the second message to the third node when the first message indicates that the first node provides a relay service for the third node, the second message indicating that the third node communicates with the first node.

4. The device according to claim 3, characterized in that The unit for sending the second message to the third node includes: A unit configured to send the second message to the third node based on the service priority of the third node, wherein the second message instructs the third node to access the network or instructs the third node to communicate with the first node.

5. A communication device, comprising a memory and a processor, wherein the memory stores a computer program, and the computer program is called by the communication device to enable the communication device to execute the method according to any one of claims 1 to 2.

6. A computer-readable storage medium, comprising a memory storing a computer program, wherein: The computer program is called by a computer so that the method according to any one of claims 1 to 2 is executed by the computer.

7. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the method according to any one of claims 1 to 2 is implemented.

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