WO2022016338A1

WO2022016338A1 - Communication method and apparatus

Info

Publication number: WO2022016338A1
Application number: PCT/CN2020/103116
Authority: WO
Inventors: 酉春华; 徐小英; 黄曲芳
Original assignee: 华为技术有限公司
Priority date: 2020-07-20
Filing date: 2020-07-20
Publication date: 2022-01-27

Abstract

A communication method and apparatus. The method comprises: a first access network device receives downlink data from a core network element; the first access network device sends the downlink data to a second access network device; and the first access network device sends a first message to the second access network device, the first message being used for determining a transmission mode of the downlink data. By using the method and apparatus of the present application, a suitable mode can be selected according to a current data condition to transmit downlink data, and then the delay and overhead are reduced.

Description

一种通信方法及装置A communication method and device

技术领域technical field

本申请实施例涉及通信技术领域，尤其涉及一种通信方法及装置。The embodiments of the present application relate to the field of communication technologies, and in particular, to a communication method and apparatus.

背景技术Background technique

在第五代(5 ^th generation，5G)的讨论中，标准中决定引入一种新的无线资源控制(radio resource control，RRC)状态，去活动态(inactive state)，终端设备与网络暂停无线资源控制(radio resource control，RRC)连接，从而达到与空闲态一样的省电效果。不同与空闲态的是：在去活动态下，终端设备和接入网设备保存终端设备的上下文。当终端设备需要进入连接态时，比如，终端设备有上行数据需要发送，或者，网络设备寻呼终端设备进入连接态时，终端设备基于保存的终端设备上下文进入到连接状态，从而减少时延，节省信令开销。当终端设备驻留小区发生变更，比如，驻留小区由第一接入网设备的小区变更为第二接入网设备的小区时，如何进行下行数据传输，是本申请实施例待解决的技术问题。 In a fifth-generation (5 ^th generation, 5G) discussion, decided to introduce a new standard in the RRC (radio resource control, RRC) state to the active state (inactive state), the radio terminal device and the network resource suspension Control (radio resource control, RRC) connection, so as to achieve the same power saving effect as the idle state. The difference from the idle state is that in the inactive state, the terminal device and the access network device save the context of the terminal device. When the terminal device needs to enter the connected state, for example, the terminal device has uplink data to send, or when the network device pages the terminal device to enter the connected state, the terminal device enters the connected state based on the saved terminal device context, thereby reducing the delay. Save signaling overhead. When the cell where the terminal equipment resides is changed, for example, when the cell where the terminal device resides is changed from the cell of the first access network device to the cell of the second access network device, how to perform downlink data transmission is a technology to be solved in this embodiment of the present application problem.

发明内容SUMMARY OF THE INVENTION

本申请实施例提供一种通信方法及装置，以在终端设备驻留小区对应的接入网设备发生变更时，确定下行数据的传输方式。The embodiments of the present application provide a communication method and apparatus, so as to determine the transmission mode of downlink data when the access network equipment corresponding to the cell where the terminal equipment resides is changed.

第一方面，提供一种通信方法，该方法的执行主体为第一接入网设备，可以理解的是，第一接入网设备可以为第一接入网设备，还可以为设置于第一接入网设备中的部件(例如，芯片、电路或其它等)，该方法包括：第一接入网设备接收来自核心网网元的下行数据；第一接入网设备向第二接入网设备发送下行数据，第一接入网设备向第二接入网设备发送第一消息，所述第一消息用于确定下行数据的传输方式，所述下行数据的传输方式包括在RRC连接态下，向终端设备发送下行数据的第一传输方式，或在RRC去活动态下，向终端设备发送下行数据的第二传输方式。In a first aspect, a communication method is provided, and the execution body of the method is a first access network device. It can be understood that the first access network device may be a first access network device, or may be a device set in the first access network. A component (for example, a chip, a circuit, or others) in an access network device, the method includes: the first access network device receives downlink data from a core network element; the first access network device sends a message to the second access network The device sends downlink data, the first access network device sends a first message to the second access network device, the first message is used to determine the transmission mode of the downlink data, and the transmission mode of the downlink data includes in the RRC connection state , the first transmission mode for sending downlink data to the terminal device, or the second transmission mode for sending downlink data to the terminal device in the RRC deactivation state.

通过上述方法，当终端设备驻留的小区由第一接入网设备变更为第二接入网设备时，第一接入网设备可根据下行数据的信息，确定下行数据的传输方式，且将下行数据的传输方式通知第二接入网设备。或者，第一接入网设备可将下行数据的信息，通知第二接入网设备，第二接入网设备自行确定下行数据的传输方式。之后，第二接入网设备可按照上述传输方式，传输下行数据。比如，第二接入网设备可先向终端设备发送RRC恢复消息。终端设备在接收到RRC恢复消息之后，进入连接态。第二接入网设备向处于连接态的终端设备发送下行数据。或者，第二接入网设备可向终端设备发送RRC释放消息，所述RRC释放消息用于通知终端设备继续停驻在去活动态，且所述RRC释放消息中可包括下行数据。Through the above method, when the cell where the terminal device resides is changed from the first access network device to the second access network device, the first access network device can determine the transmission mode of the downlink data according to the information of the downlink data, and transfer the The transmission mode of the downlink data is notified to the second access network device. Alternatively, the first access network device may notify the second access network device of the downlink data information, and the second access network device determines the transmission mode of the downlink data by itself. Afterwards, the second access network device may transmit the downlink data according to the above-mentioned transmission manner. For example, the second access network device may first send an RRC recovery message to the terminal device. After receiving the RRC recovery message, the terminal device enters the connected state. The second access network device sends downlink data to the terminal device in the connected state. Alternatively, the second access network device may send an RRC release message to the terminal device, where the RRC release message is used to notify the terminal device to continue to park in the inactive state, and the RRC release message may include downlink data.

在一种可能的实现方式中，第一消息中包括下行数据的信息，所述下行数据的信息中包括以下参数中的一项或多项：下行数据的数据量，下行数据的PDU会话信息，下行数据的服务质量流等。In a possible implementation manner, the first message includes downlink data information, and the downlink data information includes one or more of the following parameters: data volume of downlink data, PDU session information of downlink data, QoS flow of downlink data, etc.

通过上述方法，第一接入网设备或第二接入网设备可根据上述参数中的任一项，确定下行数据的传输方式。或者，可根据上述参数中的多项相结合，确定下行数据的传输。比如，第一接入网设备或第二接入网设备，可在同时满足以下条件时，才确定采用第一传输方式：下行数据的数据量大于阈值，时延小于或等于第二阈值，优先级大于或等于第三阈值，丢包率小于或等于第四阈值等。Through the above method, the first access network device or the second access network device can determine the transmission mode of downlink data according to any one of the above parameters. Alternatively, the transmission of the downlink data may be determined according to a combination of a plurality of the above parameters. For example, the first access network device or the second access network device may determine to adopt the first transmission mode only when the following conditions are met at the same time: the amount of downlink data is greater than the threshold, the delay is less than or equal to the second threshold, and priority is given to The level is greater than or equal to the third threshold, the packet loss rate is less than or equal to the fourth threshold, and so on.

在一种可能的实现方式中，第一接入网设备向第二接入网设备发送第一消息，包括：第一接入网设备根据所述下行数据的信息，确定所述第一传输方式或所述第二传输方式；In a possible implementation manner, the first access network device sending the first message to the second access network device includes: the first access network device determining the first transmission mode according to the information of the downlink data or said second means of transmission;

所述第一接入网设备向所述第二接入网设备发送所述第一消息，所述第一消息中包括所述第一传输方式的指示信息，或者，所述第二传输方式的指示信息。The first access network device sends the first message to the second access network device, where the first message includes the indication information of the first transmission mode, or the information of the second transmission mode is Instructions.

通过上述方法，第一接入网设备根据下行数据的信息，确定下行数据的传输方式为第一传输方式或第二传输方式。之后，通过第一消息将第一传输方式或第二传输方式，通知第二接入网设备，第二接入网设备直接按照第一消息指示的方式，传输下行数据即可，节省第二接入网设备的功耗。Through the above method, the first access network device determines, according to the information of the downlink data, that the transmission mode of the downlink data is the first transmission mode or the second transmission mode. After that, the first transmission mode or the second transmission mode is notified to the second access network device through the first message, and the second access network device can directly transmit the downlink data according to the mode indicated by the first message, saving the second access network device. The power consumption of the connected device.

在一种可能的实现方式中，所述下行数据的信息中包括所述下行数据的数据量，所述第一接入网设备根据所述下行数据的信息，确定所述第一传输方式或所述第二传输方式，包括：所述下行数据的数据量大于第一阈值，所述第一接入网设备确定所述第一传输方式；或者，所述下行数据的数据量小于所述第一阈值，所述第一接入网设备确定所述第二传输方式；或者，所述下行数据的数据量等于所述第一阈值，所述第一接入网设备确定所述第一传输方式或所述第二传输方式。In a possible implementation manner, the information of the downlink data includes the data amount of the downlink data, and the first access network device determines the first transmission method or the first transmission method according to the information of the downlink data. The second transmission mode includes: the data volume of the downlink data is greater than a first threshold, and the first access network device determines the first transmission mode; or, the data volume of the downlink data is smaller than the first transmission mode threshold, the first access network device determines the second transmission mode; or, the data volume of the downlink data is equal to the first threshold, the first access network device determines the first transmission mode or the second transmission mode.

通过上述方法，由于下行数据的数据量较多时，终端设备处于连接态下发送所述下行数据的传输效率较高。因此，可当下行数据的数据量较多时，采用所述第一传输方式传输下行数据，传输效率高。而当下行数据的数据量较小时，可采用所述第二传输方式传输下行数据，信令开销较小。With the above method, when the data volume of the downlink data is large, the transmission efficiency of sending the downlink data when the terminal device is in the connected state is high. Therefore, when the amount of downlink data is large, the first transmission mode can be used to transmit downlink data, and the transmission efficiency is high. When the data volume of the downlink data is small, the second transmission mode can be used to transmit the downlink data, and the signaling overhead is small.

在一种可能的实现方式中，所述下行数据的服务质量流信息包括服务质量标识QI、时延、优先级或丢包率中的至少一个。In a possible implementation manner, the quality of service flow information of the downlink data includes at least one of a quality of service identifier QI, a delay, a priority or a packet loss rate.

第二方面，提供一种通信方法，该方法的执行主体为第二接入网设备，或者设置于第二接入网设备中的部件(芯片、电路或其它等)，以第二接入网设备为执行主体为例说明，该方法包括：第二接入网设备接收来自第一接入网设备的第一消息；所述第二接入网设备根据所述第一消息，确定下行数据的传输方式，所述下行数据的传输方式包括在无线资源控制RRC连接态下，向终端设备发送所述下行数据的第一传输方式，或在RRC去活动态下，向所述终端设备发送所述下行数据的第二传输方式；所述第二接入网设备采用所述确定的传输方式，向终端设备发送所述下行数据。In a second aspect, a communication method is provided, where the execution subject of the method is a second access network device, or a component (chip, circuit or other, etc.) provided in the second access network device, to use the second access network device Taking the device as an execution subject as an example, the method includes: a second access network device receives a first message from a first access network device; and the second access network device determines the downlink data according to the first message. Transmission mode, the transmission mode of the downlink data includes the first transmission mode of sending the downlink data to the terminal device in the RRC connected state, or the first transmission mode of sending the downlink data to the terminal device in the RRC inactive state A second transmission mode of downlink data; the second access network device sends the downlink data to the terminal device by using the determined transmission mode.

通过上述方法，当终端设备处于去活动态时，第一接入网设备或第二接入网设备结合下行数据的信息，选择合适的方式传输下行数据。比如，在下行数据的数据量较小时，可采用第二传输方式传输下行数据，交互流程少，降低下行数据的传输时延。而在下行数据的数据量较大时，可采用第一传输方式传输下行数据，一次可传输更多的下行数据，提高下行数据的传输效率。综上，在本申请实施例中，根据当前数据的情况传输合适的方式传输下行数据，整体上降低时延和开销。对于数据用去活动态传输时，可以节省信令开销和资源；而对于数据用连接态传输时，可以提高数据的传输效率。Through the above method, when the terminal device is in the inactive state, the first access network device or the second access network device selects an appropriate way to transmit the downlink data in combination with the information of the downlink data. For example, when the data volume of the downlink data is small, the second transmission mode can be used to transmit the downlink data, and the interaction process is less, which reduces the transmission delay of the downlink data. When the amount of downlink data is relatively large, the first transmission mode can be used to transmit downlink data, more downlink data can be transmitted at one time, and the transmission efficiency of downlink data can be improved. To sum up, in the embodiments of the present application, downlink data is transmitted in an appropriate manner according to the current data situation, and the delay and overhead are reduced as a whole. When the data is transmitted in the active state, signaling overhead and resources can be saved; and when the data is transmitted in the connected state, the transmission efficiency of the data can be improved.

在一种可能的实现方式中，所述第一消息中包括下行数据的信息，所述下行数据的信息中包括以下参数中的一项或多项：所述下行数据的数据量，所述下行数据的协议数据单元PDU会话信息，所述下行数据的服务质量流信息，所述第二接入网设备根据所述第一消息，确定所述下行数据的传输方式，包括：所述第二接入网设备根据所述下行数据的信息，确定所述下行数据的传输方式。In a possible implementation manner, the first message includes downlink data information, and the downlink data information includes one or more of the following parameters: the data volume of the downlink data, the downlink data The protocol data unit PDU session information of the data, the QoS flow information of the downlink data, the second access network device determining the transmission mode of the downlink data according to the first message, including: the second access network device The network access device determines the transmission mode of the downlink data according to the information of the downlink data.

在一种可能的实现方式中，所述下行数据的信息中包括所述下行数据的数据量，所述第二接入网设备根据所述下行数据的信息，确定所述下行数据的传输方式，包括：所述下行数据的数据量大于第一阈值，所述第二接入网设备确定所述第一传输方式；或者，所述下行数据的数据量小于所述第一阈值，所述第二接入网设备确定所述第二传输方式；或者，所述下行数据的数据量等于所述第一阈值，所述第二接入网设备确定所述第一传输方式或所述第二传输方式。In a possible implementation manner, the information of the downlink data includes the data amount of the downlink data, and the second access network device determines the transmission mode of the downlink data according to the information of the downlink data, Including: the data volume of the downlink data is greater than the first threshold, and the second access network device determines the first transmission mode; or, the data volume of the downlink data is less than the first threshold, the second access network device determines the first transmission mode; The access network device determines the second transmission mode; or, the data volume of the downlink data is equal to the first threshold, and the second access network device determines the first transmission mode or the second transmission mode .

在一种可能的实现方式中，所述第一消息中包括第一传输方式的指示信息，或第二传输方式的指示信息，所述第二接入网设备根据所述第一消息，确定所述下行数据的传输方式，包括：所述第一消息中包括所述第一传输方式的指示信息，所述第二接入网设备确定所述下行数据的传输方式为所述第一传输方式；或者，所述第一消息中携带有第二传输方式的指示信息，所述第二接入网设备确定所述下行数据的传输方式为所述第二传输方式。In a possible implementation manner, the first message includes the indication information of the first transmission mode or the indication information of the second transmission mode, and the second access network device determines, according to the first message, the The transmission mode of the downlink data, including: the first message includes indication information of the first transmission mode, and the second access network device determines that the transmission mode of the downlink data is the first transmission mode; Or, the first message carries the indication information of the second transmission mode, and the second access network device determines that the transmission mode of the downlink data is the second transmission mode.

在一种可能的实现方式中，所述第二接入网设备采用所述确定的传输方式，向终端设备发送所述下行数据，包括：确定采用所述第一传输方式向终端设备发送所述下行数据，所述第二接入网设备向所述终端设备发送RRC恢复消息，所述RRC恢复消息用于指示所述终端设备进入RRC连接态；所述第二接入网设备向所述终端设备发送所述下行数据。In a possible implementation manner, the second access network device using the determined transmission mode to send the downlink data to the terminal device includes: determining to use the first transmission mode to send the downlink data to the terminal device Downlink data, the second access network device sends an RRC recovery message to the terminal device, where the RRC recovery message is used to instruct the terminal device to enter the RRC connected state; the second access network device sends an RRC recovery message to the terminal device The device sends the downlink data.

通过上述方法，在第一传输方式可传输更多的下行数据，第一传输更适用数据量较大的场景。Through the above method, more downlink data can be transmitted in the first transmission mode, and the first transmission is more suitable for scenarios with a large amount of data.

在一种可能的实现方式中，所述第二接入网设备采用所述确定的传输方式，向终端设备发送所述下行数据，包括：确定采用所述第二传输方式向终端设备发送所述下行数据，所述第二接入网设备向所述终端设备发送RRC释放消息，所述RRC释放消息用于通知所述终端设备停留在RRC去活动态，所述RRC释放消息中包括所述下行数据。In a possible implementation manner, the second access network device using the determined transmission mode to send the downlink data to the terminal device includes: determining to use the second transmission mode to send the downlink data to the terminal device Downlink data, the second access network device sends an RRC release message to the terminal device, the RRC release message is used to notify the terminal device to stay in the RRC inactive state, and the RRC release message includes the downlink data data.

通过上述方法，第二传输方式相对于第一传输方式，步骤较少，比较省电。但第二传输方式仅适用于数据量比较小的场景。Through the above method, the second transmission mode has fewer steps and saves power compared with the first transmission mode. However, the second transmission method is only suitable for scenarios with relatively small data amount.

第三方面，提供一种通信方法，该方法的执行主体为第一接入网设备，或者设置于第一接入网设备中的部件(芯片、电路或其它等)，以第一接入网设备为执行主体为例进行说明，该方法包括：第一接入网设备接收来自核心网网元的下行数据；所述第一接入网设备根据所述下行数据的信息，确定下行数据的传输方式，所述下行数据的传输方式包括在无线资源控制RRC连接态下，向终端设备发送所述下行数据的第一传输方式，或在RRC去活动态下，向所述终端设备发送所述下行数据的第二传输方式；所述第一接入网设备采用所确定的传输方式，向终端设备发送所述下行数据。In a third aspect, a communication method is provided, where the execution subject of the method is a first access network device, or a component (chip, circuit, or others) provided in the first access network device, to use the first access network Taking the device as an execution body as an example, the method includes: a first access network device receives downlink data from a core network element; the first access network device determines the transmission of the downlink data according to the information of the downlink data The transmission mode of the downlink data includes the first transmission mode of sending the downlink data to the terminal device in the RRC connected state, or the transmission mode of the downlink data to the terminal device in the RRC inactive state. The second transmission mode of data; the first access network device sends the downlink data to the terminal device by using the determined transmission mode.

通过上述方法，当终端设备处于去活动态时，终端设备驻留的小区始终为第一接入网设备，没有发生变更时，第一接入网设备可根据下行数据的信息，确定下行数据的传输方式，且根据所确定的传输方式，传输下行数据。第一接入网设备可结合下行数据的情况，选择合适的方式传输下行数据，整体上降低时延和开销。具体的，用连接态传输对应的下行数据，可提高数据传输的效率。用去活动态传输对应的下行数据，可节省信令开销和资源。Through the above method, when the terminal device is in the inactive state, the cell where the terminal device resides is always the first access network device, and when there is no change, the first access network device can determine the downlink data according to the downlink data information. transmission mode, and transmit downlink data according to the determined transmission mode. The first access network device may select an appropriate manner to transmit the downlink data according to the situation of the downlink data, so as to reduce the delay and overhead as a whole. Specifically, transmitting the corresponding downlink data in the connected state can improve the efficiency of data transmission. By deactivating the corresponding downlink data for dynamic transmission, signaling overhead and resources can be saved.

在一种可能的实现方式中，所述下行数据的信息包括以下参数中的一项或多项：所述下行数据的数据量，所述下行数据的协议数据单元PDU会话信息，所述下行数据的服务质量流信息。In a possible implementation manner, the information of the downlink data includes one or more of the following parameters: the data volume of the downlink data, the protocol data unit PDU session information of the downlink data, the downlink data quality of service flow information.

在一种可能的实现方式中，所述下行数据的信息中包括所述下行数据的数据量，所述第一接入网设备根据所述下行数据的信息，确定所述下行数据的传输方式，包括：所述下行数据的数据量大于第一阈值，所述第一接入网设备确定所述第一传输方式；或者所述下行数据的数据量小于所述第一阈值，所述第一接入网设备确定所述第二传输方式；或者，所述下行数据的数据量等于所述第一阈值，所述第一接入网设备确定所述第一传输方式或所述第二传输方式。In a possible implementation manner, the information of the downlink data includes the data amount of the downlink data, and the first access network device determines the transmission mode of the downlink data according to the information of the downlink data, Including: the data volume of the downlink data is greater than a first threshold, and the first access network device determines the first transmission mode; or the data volume of the downlink data is less than the first threshold, the first access network device determines the first transmission mode; The network access device determines the second transmission mode; or, the data volume of the downlink data is equal to the first threshold, and the first access network device determines the first transmission mode or the second transmission mode.

在一种可能的实现方式中，所述第一接入网设备采用所确定的传输方式，向终端设备发送所述下行数据，包括：确定采用所述第一传输方式向所述终端设备发送所述下行数据，所述第一接入网设备向所述终端设备发送RRC恢复消息，所述RRC恢复消息用于指示所述终端设备进入RRC连接态；所述第一接入网设备向所述终端设备发送所述下行数据。In a possible implementation manner, the first access network device uses the determined transmission mode to send the downlink data to the terminal device, including: determining to use the first transmission mode to send the downlink data to the terminal device the downlink data, the first access network device sends an RRC recovery message to the terminal device, where the RRC recovery message is used to instruct the terminal device to enter the RRC connected state; the first access network device sends an RRC recovery message to the terminal device. The terminal device sends the downlink data.

在一种可能的实现方式中，所述第一接入网设备采用所确定的传输方式，向终端设备发送所述下行数据，包括：确定采用所述第二传输方式向所述终端设备发送所述下行数据，所述第一接入网设备向所述终端设备发送RRC释放消息，所述RRC释放消息用于通知所述终端设备停留在RRC去活动态，所述RRC释放消息中携带有所述下行数据。In a possible implementation manner, the first access network device using the determined transmission mode to send the downlink data to the terminal device includes: determining to use the second transmission mode to send the downlink data to the terminal device the downlink data, the first access network device sends an RRC release message to the terminal device, the RRC release message is used to notify the terminal device to stay in the RRC inactive state, and the RRC release message carries the downlink data.

第四方面，本申请实施例还提供一种装置，有益效果可参见第一方面的描述。所述装置具有实现上述第一方面的方法实施例中行为的功能。所述功能可以通过执行相应的硬件或软件实现。所述硬件或软件可包括一个或多个上述功能相对应的单元。在一种可能的设计中，该装置可包括：第一通信单元，用于接收来自核心网网元的下行数据。第二通信单元，用于向第二接入网设备发送所述下行数据，以及向第二接入网设备发送第一消息，所述第一消息用于确定所述下行数据的传输方式，所述下行数据的传输方式包括在无线资源控制RRC连接态下，向终端设备发送所述下行数据的第一传输方式，或在RRC去活动态下，向所述终端设备发送所述下行数据的第二传输方式。这些单元可以执行上述第一方面方法示例中的相应功能，具体参见方法示例中的详细描述，此处不做赘述。In a fourth aspect, an embodiment of the present application further provides a device, and the beneficial effects can be found in the description of the first aspect. The apparatus has the function of implementing the behavior in the method embodiment of the first aspect. The functions can be implemented by executing corresponding hardware or software. The hardware or software may include one or more units corresponding to the above functions. In a possible design, the apparatus may include: a first communication unit, configured to receive downlink data from a core network element. The second communication unit is configured to send the downlink data to the second access network device, and send a first message to the second access network device, where the first message is used to determine the transmission mode of the downlink data, so The transmission mode of the downlink data includes the first transmission mode of sending the downlink data to the terminal device in the RRC connected state, or the first transmission mode of sending the downlink data to the terminal device in the RRC inactive state. Two transmission methods. These units may perform the corresponding functions in the method examples of the first aspect. For details, refer to the detailed descriptions in the method examples, which will not be repeated here.

第五方面，本申请实施例还提供一种装置，有益效果可参见第二方面的描述。所述装置具有实现上述第二方面的方法实施例中行为的功能。所述功能可以通过执行相应的硬件或软件实现。所述硬件或软件可包括一个或多个上述功能相对应的单元。在一种可能的设计中，该装置包括：第三通信单元，用于接收来自第一接入网设备的第一消息；处理单元，用于根据第一消息，确定下行数据的传输方式，所述下行数据的传输方式包括在无线资源控制RRC连接态下，向终端设备发送所述下行数据的第一传输方式，或在RRC去活动态下，向所述终端设备发送所述下行数据的第二传输方式；第四通信单元，用于采用所述确定的传输方式，向终端设备发送所述下行数据。这些单元可以执行上述第二方面方法示例中的相应功能，具体参见方法示例中的详细描述，此处不做赘述。In a fifth aspect, an embodiment of the present application further provides a device, and for beneficial effects, reference may be made to the description of the second aspect. The apparatus has the function of implementing the behavior in the method embodiment of the second aspect. The functions can be implemented by executing corresponding hardware or software. The hardware or software may include one or more units corresponding to the above functions. In a possible design, the apparatus includes: a third communication unit, configured to receive the first message from the first access network device; and a processing unit, configured to determine the transmission mode of the downlink data according to the first message, so the The transmission mode of the downlink data includes the first transmission mode of sending the downlink data to the terminal device in the RRC connected state, or the first transmission mode of sending the downlink data to the terminal device in the RRC inactive state. Two transmission modes; a fourth communication unit, configured to use the determined transmission mode to send the downlink data to the terminal device. These units may perform the corresponding functions in the method examples of the second aspect. For details, please refer to the detailed descriptions in the method examples, which will not be repeated here.

第六方面，本申请实施例还提供一种装置，有益效果可参见第三方面的描述。所述装置具有实现上述第三方面的方法实施例中行为的功能。所述功能可以通过执行相应的硬件或软件实现。所述硬件或软件可包括一个或多个上述功能相对应的单元。在一种可能的设计中，该装置包括：第五通信单元，用于接收来自核心网网元的下行数据；处理单元，用于根据所述下行数据的信息，确定下行数据的传输方式，所述下行数据的传输方式包括在无线资源控制RRC连接态下，向终端设备发送所述下行数据的第一传输方式，或在RRC去活动态下，向所述终端设备发送所述下行数据的第二传输方式；第六通信单元，用于采用所确定的传输方式，向终端设备发送所述下行数据。这些单元可以执行上述第三方面方法示例中的相应功能，具体参见方法示例中的详细描述，此处不做赘述。In a sixth aspect, an embodiment of the present application further provides a device, and the beneficial effects can be found in the description of the third aspect. The apparatus has the function of implementing the behavior in the method embodiment of the third aspect. The functions can be implemented by executing corresponding hardware or software. The hardware or software may include one or more units corresponding to the above functions. In a possible design, the device includes: a fifth communication unit, configured to receive downlink data from a core network element; a processing unit, configured to determine a transmission mode of the downlink data according to the information of the downlink data, so The transmission mode of the downlink data includes the first transmission mode of sending the downlink data to the terminal device in the RRC connected state, or the first transmission mode of sending the downlink data to the terminal device in the RRC inactive state. Two transmission modes; a sixth communication unit, configured to send the downlink data to the terminal device by using the determined transmission mode. These units may perform the corresponding functions in the method example of the third aspect, for details, please refer to the detailed description in the method example, which will not be repeated here.

第七方面，提供了一种装置，该装置可以为上述第一方面方法实施例中的第一接入网设备，或者为设置在第一接入网设备中的芯片。该装置包括通信接口以及处理器，可选的，还包括存储器。其中，该存储器用于存储计算机程序或指令，处理器与存储器、通信接口耦合，当处理器执行所述计算机程序或指令时，使装置执行上述第一方面方法实施例中由第一接入网设备所执行的方法。In a seventh aspect, an apparatus is provided, and the apparatus may be the first access network device in the method embodiment of the first aspect, or a chip provided in the first access network device. The apparatus includes a communication interface, a processor, and optionally, a memory. The memory is used to store computer programs or instructions, and the processor is coupled to the memory and the communication interface. When the processor executes the computer program or instructions, the device is made to execute the first access network in the method embodiment of the first aspect. The method performed by the device.

第八方面，提供了一种装置，该装置可以为上述第二方面方法实施例中的第二接入网设备，或者为设置在第二接入网设备中的芯片。该装置包括通信接口以及处理器，可选的，还包括存储器。其中，该存储器用于存储计算机程序或指令，处理器与存储器、通信接口耦合，当处理器执行所述计算机程序或指令时，使装置执行上述第二方面方法实施例中由第二接入网设备所执行的方法。In an eighth aspect, an apparatus is provided, and the apparatus may be the second access network device in the method embodiment of the second aspect, or a chip provided in the second access network device. The apparatus includes a communication interface, a processor, and optionally, a memory. The memory is used to store computer programs or instructions, and the processor is coupled to the memory and the communication interface. When the processor executes the computer program or instructions, the device is made to execute the second access network in the method embodiment of the second aspect. The method performed by the device.

第九方面，提供了一种装置，该装置可以为上述第三方面方法实施例中的第一接入网设备，或者为设置在第一接入网设备中的芯片。该装置包括通信接口以及处理器，可选的，还包括存储器。其中，该存储器用于存储计算机程序或指令，处理器与存储器、通信接口耦合，当处理器执行所述计算机程序或指令时，使装置执行上述第三方面方法实施例中由第一接入网设备所执行的方法。In a ninth aspect, an apparatus is provided, and the apparatus may be the first access network device in the method embodiment of the third aspect, or a chip provided in the first access network device. The apparatus includes a communication interface, a processor, and optionally, a memory. The memory is used to store computer programs or instructions, and the processor is coupled to the memory and the communication interface, and when the processor executes the computer program or instructions, the device is made to execute the first access network in the method embodiment of the third aspect. The method performed by the device.

第十方面，提供了一种计算机程序产品，所述计算机程序产品包括：计算机程序代码，当所述计算机程序代码并运行时，使得上述第一方面中由第一接入网设备执行的方法被执行。In a tenth aspect, a computer program product is provided, the computer program product comprising: computer program code, when the computer program code is executed, the method executed by the first access network device in the above-mentioned first aspect is implement.

第十一方面，提供了一种计算机程序产品，所述计算机程序产品包括：计算机程序代码，当所述计算机程序代码被运行时，使得上述第二方面中由第二接入网设备执行的方法被执行。In an eleventh aspect, a computer program product is provided, the computer program product comprising: computer program code, when the computer program code is executed, the method in the second aspect above is executed by a second access network device be executed.

第十二方面，提供了一种计算机程序产品，所述计算机程序产品包括：计算机程序代码，当所述计算机程序代码并运行时，使得上述第三方面中由第一接入网设备执行的方法被执行。A twelfth aspect provides a computer program product, the computer program product comprising: computer program code, when the computer program code is run in parallel, the method in the third aspect above is executed by the first access network device be executed.

第十三方面，本申请提供了一种芯片***，该芯片***包括处理器，用于实现上述第一方面的方法中第一接入网设备的功能。在一种可能的设计中，所述芯片***还包括存储器，用于保存程序指令和/或数据。该芯片***，可以由芯片构成，也可以包括芯片和其他分立器件。In a thirteenth aspect, the present application provides a chip system, where the chip system includes a processor for implementing the function of the first access network device in the method of the first aspect above. In a possible design, the chip system further includes a memory for storing program instructions and/or data. The chip system may be composed of chips, or may include chips and other discrete devices.

第十四方面，本申请提供了一种芯片***，该芯片***包括处理器，用于实现上述第二方面的方法中第二接入网设备的功能。在一种可能的设计中，所述芯片***还包括存储器，用于保存程序指令和/或数据。该芯片***，可以由芯片构成，也可以包括芯片和其他分立器件。In a fourteenth aspect, the present application provides a chip system, where the chip system includes a processor for implementing the function of the second access network device in the method of the second aspect above. In a possible design, the chip system further includes a memory for storing program instructions and/or data. The chip system may be composed of chips, or may include chips and other discrete devices.

第十五方面，本申请提供了一种芯片***，该芯片***包括处理器，用于实现上述第三方面的方法中第一接入网设备的功能。在一种可能的设计中，所述芯片***还包括存储器，用于保存程序指令和/或数据。该芯片***，可以由芯片构成，也可以包括芯片和其他分立器件。In a fifteenth aspect, the present application provides a chip system, where the chip system includes a processor for implementing the function of the first access network device in the method of the third aspect. In a possible design, the chip system further includes a memory for storing program instructions and/or data. The chip system may be composed of chips, or may include chips and other discrete devices.

第十六方面，本申请提供了一种计算机可读存储介质，该计算机可读存储介质存储有计算机程序，当该计算机程序被运行时，实现上述第一方面中由第一接入网设备执行的方法。In a sixteenth aspect, the present application provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed, the first access network device in the above-mentioned first aspect is executed. Methods.

第十七方面，本申请提供了一种计算机可读存储介质，该计算机可读存储介质存储有计算机程序，当该计算机程序被运行时，实现上述第二方面中由第二接入网设备执行的方法。In a seventeenth aspect, the present application provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed, the second access network device executes the above-mentioned second aspect. Methods.

第十八方面，本申请提供了一种计算机可读存储介质，该计算机可读存储介质存储有计算机程序，当该计算机程序被运行时，实现上述第三方面中由第一接入网设备执行的方法。In an eighteenth aspect, the present application provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed, the third aspect is executed by the first access network device. Methods.

附图说明Description of drawings

图1为本申请实施例提供的网络架构的一示意图；FIG. 1 is a schematic diagram of a network architecture provided by an embodiment of the present application;

图2和图3为本申请实施例提供的接入网设备的架构示意图；FIG. 2 and FIG. 3 are schematic diagrams of the architecture of an access network device provided by an embodiment of the present application;

图4为本申请实施例提供的通信方法的一流程图；4 is a flowchart of a communication method provided by an embodiment of the present application;

图5为本申请实施例提供的通信方法的另一流程图；FIG. 5 is another flowchart of the communication method provided by the embodiment of the present application;

图6为本申请实施例提供的通信方法的又一流程图；FIG. 6 is another flowchart of the communication method provided by the embodiment of the present application;

图7为本申请实施例提供的装置的一结构示意图；7 is a schematic structural diagram of an apparatus provided by an embodiment of the present application;

图8为本申请实施例提供的装置的另一结构示意图。FIG. 8 is another schematic structural diagram of an apparatus provided by an embodiment of the present application.

具体实施方式detailed description

下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述。其中，在本申请的描述中，除非另有说明，“/”表示前后关联的对象是一种“或”的关系，例如，A/B可以表示A或B；本申请中的“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况，其中A,B可以是单数或者复数。并且，在本申请的描述中，除非另有说明，“多个”是指两个或多于两个。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a，b，或c中的至少一项(个)，可以表示：a，b，c，a-b，a-c，b-c，或a-b-c，其中a，b，c可以是单个，也可以是多个。另外，为了便于清楚描述本申请实施例的技术方案，在本申请的实施例中，采用了“第一”、“第二”等字样对功能和作用基本相同的相同项或相似项进行区分。本领域技术人员可以理解“第一”、“第二”等字样并不对数量和执行次序进行限定，并且“第一”、“第二”等字样也并不限定一定不同。The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. Wherein, in the description of this application, unless otherwise specified, "/" indicates that the objects associated before and after are an "or" relationship, for example, A/B can indicate A or B; in this application, "and/or" "It is only an association relationship that describes an associated object, which means that there can be three kinds of relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone, where A exists , B can be singular or plural. Also, in the description of the present application, unless stated otherwise, "plurality" means two or more than two. "At least one item(s) below" or similar expressions thereof refer to any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one item (a) of a, b, or c may represent: a, b, c, ab, ac, bc, or abc, where a, b, and c may be single or multiple . In addition, in order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish the same or similar items with basically the same function and effect. Those skilled in the art can understand that the words "first", "second" and the like do not limit the quantity and execution order, and the words "first", "second" and the like are not necessarily different.

此外，本申请实施例描述的网络架构以及业务场景是为了更加清楚的说明本申请实施例的技术方案，并不构成对本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。In addition, the network architecture and service scenarios described in the embodiments of the present application are for the purpose of illustrating the technical solutions of the embodiments of the present application more clearly, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. The evolution of the network architecture and the emergence of new service scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

如图1所示，提供一种网络架构，包括：终端设备、接入网设备和核心网设备。As shown in FIG. 1 , a network architecture is provided, including: terminal equipment, access network equipment and core network equipment.

终端设备可以简称为终端，是一种具有无线收发功能的设备，终端设备可以部署在陆地上，包括室内或室外、手持或车载；也可以部署在水面上(如轮船等)；还可以部署在空中(例如飞机、气球和卫星上等)。所述终端设备可以是手机(mobile phone)、平板电脑(pad)、带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端设备、无人驾驶(self driving)中的无线终端设备、远程医疗(remote medical)中的无线终端设备、智能电网(smart grid)中的无线终端设备、运输安全(transportation safety)中的无线终端设备、智慧城市(smart city)中的无线终端设备、或智慧家庭(smart home)中的无线终端设备等。终端设备还可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，未来第五代(the 5th generation，5G)网络中的终端设备或者未来演进的公用陆地移动通信网络(public land mobile network，PLMN)中的终端设备等。终端设备有时也可以称为用户设备(user equipment，UE)、接入终端设备、车载终端设备、工业控制终端设备、UE单元、UE站、移动站、移动台、远方站、远程终端设备、移动设备、无线通信设备、UE代理或UE装置等。终端设备也可以是固定的或者移动的。本申请实施例对此并不限定。作为示例而非限定，在本申请实施例中，终端设备可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大功能的设备。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能首饰等。在本申请中，终端设备可以是物联网(internet of things，IoT)***中的终端，IoT是未来信息技术发展的重要组成部分，其主要技术特点是将物品通过通信技术与网络连接，从而实现人机互连，物物互连的智能化网络。本申请中的终端设备可以是机器类型通信(machine type communication，MTC)中的终端设备。本申请的终端设备可以是作为一个或多个部件或者单元而内置于车辆的车载模块、车载模组、车载部件、车载芯片或者车载单元，车辆通过内置的所述车载模块、车载模组、车载部件、车载芯片或者车载单元可以实施本申请的方法。因此，本申请实施例可以应用于车联网，例如车辆外联(vehicle to everything，V2X)、车间通信长期演进技术(long term evolution vehicle，LTE-V)、车到车(vehicle to vehicle，V2V)等。Terminal equipment, which can be referred to as terminal for short, is a device with wireless transceiver functions. Terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; it can also be deployed on water (such as ships, etc.); In the air (eg on airplanes, balloons and satellites, etc.). The terminal device can be a mobile phone (mobile phone), a tablet computer (pad), a computer with wireless transceiver function, a virtual reality (virtual reality, VR) terminal device, an augmented reality (augmented reality, AR) terminal device, industrial control ( Wireless terminal equipment in industrial control, wireless terminal equipment in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid, transportation security (transportation) Safety) wireless terminal equipment, smart city (smart city) wireless terminal equipment, or smart home (smart home) wireless terminal equipment and so on. The terminal device may also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a wireless communication functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in future fifth generation (5G) networks or future evolved public land mobile communication networks ( Terminal equipment in public land mobile network, PLMN), etc. Terminal equipment may also sometimes be referred to as user equipment (UE), access terminal equipment, in-vehicle terminal equipment, industrial control terminal equipment, UE unit, UE station, mobile station, mobile station, remote station, remote terminal equipment, mobile equipment, wireless communication equipment, UE proxy or UE device, etc. Terminal devices can also be stationary or mobile. This embodiment of the present application does not limit this. As an example and not a limitation, in this embodiment of the present application, the terminal device may be a wearable device. Wearable devices can also be called wearable smart devices, which are the general term for the intelligent design of daily wear and the development of wearable devices using wearable technology, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable device is not only a hardware device, but also a device that realizes powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-scale, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, which needs to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets, smart jewelry, etc. for physical sign monitoring. In this application, the terminal device can be a terminal in the Internet of Things (IoT) system. IoT is an important part of the future development of information technology. Its main technical feature is that items are connected to the network through communication technology, thereby realizing Human-machine interconnection, the intelligent network of the interconnection of things and things. The terminal device in this application may be a terminal device in machine type communication (MTC). The terminal device of the present application may be an on-board module, on-board module, on-board component, on-board chip or on-board unit built into the vehicle as one or more components or units, and the vehicle passes the built-in on-board module, on-board module, on-board unit A component, on-board chip or on-board unit may implement the method of the present application. Therefore, the embodiments of the present application can be applied to the Internet of Vehicles, such as vehicle to everything (V2X), long term evolution vehicle (LTE-V), vehicle to vehicle (V2V) Wait.

接入网设备用于实现无线接入有关的功能，主要负责空口侧的无线资源管理、服务质量(quality of service，QoS)管理、数据压缩和安全处理等。接入网设备的数量可以一个或多个，不同接入网设备之间可通过Xn接口通信。接入网设备与核心网设备之间可通过NG接口通信，接入设备与终端设备之间可通过Uu空口通信。接入网设备还可称为无线接入网(radio access network，RAN)设备。接入网设备可以包括各种形式的基站。例如，宏基站、微基站(小站)、中继站或接入点等。接入网设备可以包括但不限于：5G中的下一代节点(next generation nodeB，gNB)、下一代演进型节点(next generation evolved node B， ng-eNB)、无线网络控制器(radio network controller，RNC)、节点B(node B，NB)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station，BTS)、家庭基站(例如，home evolved nodeB，或home node B，HNB)、基带单元(baseband unit，BBU)、收发点(transmitting and receiving point，TRP)、发射点(transmitting point，TP)、或移动交换中心等。接入网设备还可以是云无线接入网络(cloud radio access network，CRAN)场景下的无线控制器、集中单元(centralized unit，CU)，和/或分布单元(distributed unit,DU)。或者接入网设备还可以为中继站、接入点、车载设备、终端设备、可穿戴设备以及未来6G网络中的接入网设备或者未来演进的公用陆地移动通信网络(public land mobile network，PLMN)网络中的接入网设备等。Access network equipment is used to implement functions related to wireless access, and is mainly responsible for radio resource management, quality of service (QoS) management, data compression, and security processing on the air interface side. The number of access network devices may be one or more, and communication between different access network devices may be through the Xn interface. The access network device and the core network device can communicate through the NG interface, and the access device and the terminal device can communicate through the Uu air interface. An access network device may also be referred to as a radio access network (RAN) device. Access network equipment may include various forms of base stations. For example, a macro base station, a micro base station (small cell), a relay station or an access point, etc. The access network equipment may include but is not limited to: next generation node B (gNB) in 5G, next generation evolved node (next generation evolved node B, ng-eNB), radio network controller (radio network controller, RNC), node B (node B, NB), base station controller (BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved nodeB, or home node B, HNB) , baseband unit (baseband unit, BBU), transmitting and receiving point (transmitting and receiving point, TRP), transmitting point (transmitting point, TP), or mobile switching center, etc. The access network device may also be a wireless controller, a centralized unit (centralized unit, CU), and/or a distributed unit (distributed unit, DU) in a cloud radio access network (cloud radio access network, CRAN) scenario. Or the access network equipment can also be a relay station, an access point, a vehicle-mounted device, a terminal device, a wearable device, and an access network device in the future 6G network or a public land mobile network (PLMN) evolved in the future. Access network equipment in the network, etc.

核心网设备主要用于对终端设备进行管理并提供与外网通信的网元。核心网设备可以为不同网络制式中的核心网网元。例如，可以包括以下中的一个或多个网元：Core network equipment is mainly used to manage terminal equipment and provide network elements that communicate with external networks. The core network devices may be core network network elements in different network standards. For example, it may include one or more of the following network elements:

用户面功能网元(user plane function，UPF)网元，主要负责用户数据的转发和接收。在下行传输过程中，UPF网元可以从数据网络(data network，DN)接收用户数据，通过接入网设备传输给终端设备；在上行数据传输中，UPF网元可以通过接入网设备从终端设备接收用户数据，向DN转发该用户数据。可选的，UPF网元中为终端设备提供服务的传输资源和调度功能可以由会话管理功能(session management function，SMF)网元管理控制。接入和移动性管理功能(access&mobility function，AMF)网元：主要负责移动网络中的移动性管理，如用户位置更新、用户注册网络、用户切换等。SMF网元，主要负责移动网络中的会话管理，如会话建立、修改、释放等。具体功能如为用户分配IP地址、选择提供报文转发功能的UPF网元等。会话管理功能网元可以为和策略控制功能(policy control function，PCF)网元，主要支持提供统一的策略框架来控制网络行为，提供策略规则给控制层网络功能，同时负责获取与策略相关的用户签约信息等。应用功能(application function，AF)网元，主要支持与3GPP核心网交互来提供服务，例如影响数据路由决策，策略控制功能或者向网络侧提供第三方的一些服务。统一数据管理(unified data management，UDM)网元，主要用于生成认证信任状，用户标识处理(如存储和管理用户永久身份等)，接入授权控制和签约数据管理等。认证服务器功能(authentication server function，AUSF)网元，主要用于在终端设备接入网络时执行认证，包括接收安全锚点功能(security anchor function,SEAF)发送的鉴权请求，选择鉴权方法，以及向鉴权存储和处理功能(authentication repository and processing function，ARPF)请求鉴权向量等。网络切片选择功能(network slice selection function，NSSF)网元，主要用于为终端设备选择网络切片实例，确定允许的网络切片选择辅助信息(network slice selection assistance information，NSSAI)、配置NSSAI和确定服务终端设备的AMF集。可选的，所述核心网网元仅为示意性说明，并不作为对本申请实施例的限定。比如，在所述图1中的架构中，核心网网元还可以包括：网络开放功能(network exposure function，NEF)、网络存储器功能(network repository function，NRF)、或业务控制点(service control point，SCP)等中的一个或多个网元等，不再进一步说明。The user plane function (UPF) network element is mainly responsible for forwarding and receiving user data. In the downlink transmission process, the UPF network element can receive user data from the data network (DN) and transmit it to the terminal equipment through the access network equipment; in the uplink data transmission, the UPF network element can use the access network equipment from the terminal equipment. The device receives the user data and forwards the user data to the DN. Optionally, the transmission resources and scheduling functions in the UPF network element that provide services for the terminal device may be managed and controlled by a session management function (session management function, SMF) network element. Access and mobility management function (access & mobility function, AMF) network element: mainly responsible for the mobility management in the mobile network, such as user location update, user registration network, user switching and so on. The SMF network element is mainly responsible for session management in the mobile network, such as session establishment, modification, and release. Specific functions include assigning IP addresses to users and selecting UPF network elements that provide packet forwarding functions. The session management function network element can be a policy control function (PCF) network element, which mainly supports providing a unified policy framework to control network behavior, provides policy rules to the control layer network function, and is responsible for obtaining policy-related users. contract information, etc. The application function (AF) network element mainly supports interaction with the 3GPP core network to provide services, such as influencing data routing decisions, policy control functions, or providing some third-party services to the network side. The unified data management (UDM) network element is mainly used for generating authentication credentials, user identification processing (such as storing and managing user permanent identities, etc.), access authorization control and contract data management, etc. The authentication server function (AUSF) network element is mainly used to perform authentication when the terminal device accesses the network, including receiving the authentication request sent by the security anchor function (SEAF), selecting the authentication method, And request the authentication vector from the authentication repository and processing function (ARPF), etc. The network slice selection function (NSSF) network element is mainly used to select network slice instances for terminal devices, determine the allowable network slice selection assistance information (NSSAI), configure NSSAI, and determine service terminals AMF set for the device. Optionally, the core network element is only for schematic illustration, and is not intended to limit the embodiments of the present application. For example, in the architecture shown in FIG. 1, the core network element may further include: a network exposure function (NEF), a network repository function (NRF), or a service control point (service control point) , SCP), etc., one or more network elements, etc., will not be further described.

进一步的，接入网设备和终端设备之间的通信可遵循一定的协议层结构。例如控制面协议层结构可以包括无线资源控制(radio resource control，RRC)层、分组数据汇聚层协议(packet data convergence protocol，PDCP)层、无线链路控制(radio link control，RLC)层、媒体接入控制(media access control，MAC)层和物理层等协议层的功能。用户面协议层结构可以包括PDCP层、RLC层、MAC层和物理层等协议层的功能；在一种可能的实现方式中，PDCP层之上还可以包括业务数据适配(service data adaptation protocol,SDAP)层。Further, the communication between the access network device and the terminal device may follow a certain protocol layer structure. For example, the control plane protocol layer structure may include radio resource control (radio resource control, RRC) layer, packet data convergence protocol (packet data convergence protocol, PDCP) layer, radio link control (radio link control, RLC) layer, media interface Access control (media access control, MAC) layer and physical layer and other protocol layer functions. The user plane protocol layer structure may include the functions of protocol layers such as the PDCP layer, the RLC layer, the MAC layer, and the physical layer; in a possible implementation manner, the PDCP layer may also include service data adaptation protocol (service data adaptation protocol, SDAP) layer.

可选的，所述协议层的功能可以由一个节点实现，或者可以由多个节点实现。例如，在一种演进结构中，接入网设备可以包括集中单元(centralized unit，CU)和分布式单元(distributed unit，DU)等，多个DU可以由一个CU集中控制。如图2所示，CU和DU可以根据无线网络的协议层划分。例如，PDCP层及以上协议层的功能可设置在CU，PDCP层以下的协议层，例如RLC层、MAC层和PHY层等的功能可以设置在DU。Optionally, the function of the protocol layer may be implemented by one node, or may be implemented by multiple nodes. For example, in an evolution structure, an access network device may include a centralized unit (centralized unit, CU), a distributed unit (distributed unit, DU), etc., and multiple DUs may be centrally controlled by one CU. As shown in FIG. 2, CU and DU can be divided according to the protocol layer of the wireless network. For example, the functions of the PDCP layer and the above protocol layers may be set in the CU, and the functions of the protocol layers below the PDCP layer, such as the RLC layer, the MAC layer, and the PHY layer, may be set in the DU.

所述协议层的划分仅仅是一种示例，并不作为对本申请实施例中的限定，还可以在其它协议层划分CU和DU。例如，在RLC层划分，将RLC层及以上协议层的功能设置在CU，将RLC层及以下协议层的功能设置在DU。或者，在某个协议层中划分，例如将RLC层的部分功能和RLC层以上的协议层的功能设置在CU，将RLC层的剩余功能和RLC层以下的协议层的功能设置在DU。此外，也可以按其它方式划分，例如按时延划分，将处理时间需要满足时延要求的功能设置在DU，不需要满足该时延要求的功能设置在CU等。The division of the protocol layers is only an example, and is not intended to be a limitation to the embodiments of the present application, and CUs and DUs may also be divided at other protocol layers. For example, in the RLC layer division, the functions of the RLC layer and the above protocol layers are set in the CU, and the functions of the RLC layer and the following protocol layers are set in the DU. Alternatively, in a certain protocol layer, for example, some functions of the RLC layer and functions of the protocol layers above the RLC layer are placed in the CU, and the remaining functions of the RLC layer and the functions of the protocol layers below the RLC layer are placed in the DU. In addition, it can also be divided in other ways, for example, by time delay, the functions whose processing time needs to meet the delay requirements are set in the DU, and the functions that do not need to meet the delay requirements are set in the CU, etc.

相对于图2所示的架构，如图3所示，还可以将CU的控制面(control plane，CU)和用户面(user plane，UP)分离，分成不同实体来实现，分别为控制面CU实体(CU-CP)和用户面CU实体(CU-UP)等。Compared with the architecture shown in Figure 2, as shown in Figure 3, the control plane (CU) and the user plane (UP) of the CU can also be separated and divided into different entities for implementation, namely the control plane CU. entity (CU-CP) and user plane CU entity (CU-UP), etc.

在以上网络架构中，CU产生的信令可以通过DU发送给终端设备，或者终端设备产生的信令可以通过DU发送给CU。DU可以不对该信令进行解析而直接通过协议层封装而透传给终端设备或CU。以下实施例的描述中，如果涉及信令在DU和终端设备之间的传输，此时，DU对信令的发送或接收包括这种场景。例如，RRC或PDCP层的信令最终会处理为PHY层的信令发送给终端设备，或者，由接收到的PHY层的信令转变而来。在这种架构下，该RRC或PDCP层的信令，即也可以认为是由DU发送的，或者，由DU和射频发送的，不作限定。In the above network architecture, the signaling generated by the CU can be sent to the terminal device through the DU, or the signaling generated by the terminal device can be sent to the CU through the DU. The DU may directly encapsulate the signaling at the protocol layer and transparently transmit it to the terminal device or CU without parsing the signaling. In the description of the following embodiments, if the transmission of signaling between the DU and the terminal device is involved, at this time, the sending or receiving of the signaling by the DU includes this scenario. For example, the signaling of the RRC or PDCP layer is finally processed as the signaling of the PHY layer and sent to the terminal device, or is converted from the received signaling of the PHY layer. Under this architecture, the signaling of the RRC or PDCP layer can also be considered to be sent by the DU, or sent by the DU and the radio frequency, which is not limited.

本申请以下实施例中的装置，根据其实现的功能，可以位于网络设备。当采用以下CU-DU的结构时，网络设备可以为CU节点，或DU节点，或包括CU节点和DU节点的接入网设备。The apparatuses in the following embodiments of the present application may be located in network equipment according to the functions implemented by the apparatuses. When the following CU-DU structure is adopted, the network device may be a CU node, or a DU node, or an access network device including a CU node and a DU node.

如图4所示，提供一种通信方法的流程。在该流程中，终端设备驻留的小区由第一接入网设备的小区变更为第二接入网设备的小区，包括但不限于：As shown in FIG. 4 , a flow of a communication method is provided. In this process, the cell where the terminal device resides is changed from the cell of the first access network device to the cell of the second access network device, including but not limited to:

步骤401，终端设备接收来自第一接入网设备的RRC释放消息，所述RRC释放消息用于通知终端设备进入RRC去活动(inactive)态。Step 401: The terminal device receives an RRC release message from the first access network device, where the RRC release message is used to notify the terminal device to enter an RRC inactive state.

其中，终端设备在接收到RRC释放消息后，暂停空口的RRC连接，但是保存终端设备的上下文，进入RRC去活动态。由于UPF与第一接入网设备之间的数据通道连接是保留的。因此，终端设备的下行数据到达UPF。可选的，所述RRC释放消息还可以为终端设备分配恢复标识(resume identity document，resume ID)和RAN通知区域(RAN notification area，RNA)。RAN通知区域可以包括一个或多个小区列表，或，包括一个或多个跟踪区域，或包括一个或多个小区。且以下情况均有可能：多个小区列表可以属于一个或多个接入网设备；多个跟踪区域可以属于一个或多个接入网设备；一个小区列表或一个跟踪区域内的小区可属于一个或多个接入网设备。恢复标识用于标识终端设备的身份，可以理解为终端设备在RNA内的身份标识，当终端设备在RNA内移动时，可以通过该身份标识，确定该终端设备的上下文。Wherein, after receiving the RRC release message, the terminal device suspends the RRC connection of the air interface, but saves the context of the terminal device and enters the RRC inactive state. Because the data channel connection between the UPF and the first access network device is reserved. Therefore, the downlink data of the terminal device reaches the UPF. Optionally, the RRC release message may also allocate a resume identity document (resume identity document, resume ID) and a RAN notification area (RAN notification area, RNA) to the terminal device. The RAN notification area may include one or more cell lists, or, one or more tracking areas, or one or more cells. And the following situations are possible: multiple cell lists may belong to one or more access network devices; multiple tracking areas may belong to one or more access network devices; a cell list or cells in a tracking area may belong to one or multiple access network devices. The recovery mark is used to identify the identity of the terminal equipment, which can be understood as the identity mark of the terminal equipment in the RNA. When the terminal equipment moves in the RNA, the context of the terminal equipment can be determined by the identity mark.

RRC释放消息用于通知终端设备释放或暂停RRC连接，如果RRC释放消息中携带指示终端设备进入RRC去活动态的信元，则终端设备进入RRC去活动态，否则，终端设备进入空闲态。该信元例如为挂起配置(suspendConfig)。The RRC release message is used to notify the terminal device to release or suspend the RRC connection. If the RRC release message carries an information element indicating that the terminal device enters the RRC deactivation state, the terminal device enters the RRC deactivation state, otherwise, the terminal device enters the idle state. This information element is, for example, a suspend configuration (suspendConfig).

以上方式可以复用RRC释放消息，节省消息的开销。在另一种实现中，可以通过其它RRC消息(现有的其它RRC消息或新增RRC消息)携带类似的信元指示终端设备进入RRC去活动态。The above manner can reuse the RRC release message, saving message overhead. In another implementation, other RRC messages (other existing RRC messages or newly added RRC messages) may carry similar information elements to instruct the terminal device to enter the RRC inactive state.

步骤402，第一接入网设备接收来自UPF的下行数据。Step 402, the first access network device receives downlink data from the UPF.

可选的，第一接入网设备在接收到下行数据后，第一接入网设备可触发寻呼。第一接入网设备向其RNA区域下的其他接入网设备(包括第二接入网设备)发送RAN寻呼消息。第二接入网设备在接收到RAN寻呼消息后，向终端设备发送Uu寻呼消息。Optionally, after the first access network device receives the downlink data, the first access network device may trigger paging. The first access network device sends a RAN paging message to other access network devices (including the second access network device) under its RNA area. After receiving the RAN paging message, the second access network device sends a Uu paging message to the terminal device.

步骤403，第二接入网设备接收来自第一接入网设备的RAN寻呼消息。可选的，由于第一接入网设备不知道终端设备在那个无线接入网设备的覆盖范围下，因此第一接入网设备可通知其RAN通知区域下的接入网设备寻呼终端设备，并等待终端设备的响应。Step 403, the second access network device receives the RAN paging message from the first access network device. Optionally, since the first access network device does not know that the terminal device is under the coverage of which radio access network device, the first access network device may notify the access network device under its RAN notification area to page the terminal device. , and wait for a response from the terminal device.

步骤404，第二接入网设备向终端设备发送Uu寻呼消息，所述Uu寻呼消息中包括终端设备的标识。终端设备根据所述Uu寻呼消息中携带的终端设备标识，可以判断出自己是否被寻呼。如果终端设备判断出自己被寻呼，则执行下行步骤405。该终端设备的标识例如为resume ID或去活动态无线网络临时标识(inactive radio network temporary identify，I-RNTI)。Step 404, the second access network device sends a Uu paging message to the terminal device, where the Uu paging message includes the identifier of the terminal device. The terminal device can determine whether it is paged according to the terminal device identifier carried in the Uu paging message. If the terminal device determines that it is being paged, the downlink step 405 is performed. The identification of the terminal device is, for example, a resume ID or an inactive radio network temporary identification (inactive radio network temporary identification, I-RNTI).

步骤405，终端设备向第二接入网设备发送RRC恢复(resume)请求。可选的，终端设备还可向第二接入网设备发送上行数据，该上行数据与所述RRC恢复请求可携带于同一消息中。Step 405, the terminal device sends an RRC resume (resume) request to the second access network device. Optionally, the terminal device may also send uplink data to the second access network device, where the uplink data and the RRC recovery request may be carried in the same message.

步骤406，第二接入网设备向第一接入网设备发送上下文获取请求。由于终端设备的上下文保存在第一接入网设备中，所以第二接入网设备需要向第一接入网设备发送上下文获取请求，以获取终端设备的上下文。Step 406, the second access network device sends a context acquisition request to the first access network device. Since the context of the terminal device is stored in the first access network device, the second access network device needs to send a context acquisition request to the first access network device to acquire the context of the terminal device.

步骤407，第一接入网设备向第二接入网设备发送上下文响应，所述上下文响应中携带有终端设备的上下文信息。可选的，终端设备的上下文信息中可包括以下内容中的一项或多项：Step 407: The first access network device sends a context response to the second access network device, where the context response carries the context information of the terminal device. Optionally, the context information of the terminal device may include one or more of the following:

1)终端设备的接入层(access stratum，AS)上下文，包括“源主小区的小区标识”，该小区标识用于唯一标识一个小区，例如为全球小区识别(cell global identifier，CGI)，或者，在新空口(new radio，NR)***中，为新空口全球小区识别(NR，cell global identifier，CGI，NCGI)；“源主小区的物理小区标识”“源主小区的小区无线网络临时标识(cell-radio network temporary identifier，C-RNTI),健壮性包头压缩(robust header compression，ROHC)状态等。其中，源主小区是指所述第一接入网设备下的小区。1) The access stratum (AS) context of the terminal device, including the "cell identity of the source primary cell", which is used to uniquely identify a cell, such as cell global identifier (CGI), or , in the new radio interface (new radio, NR) system, it is the new air interface global cell identifier (NR, cell global identifier, CGI, NCGI); (cell-radio network temporary identifier, C-RNTI), robust header compression (robust header compression, ROHC) state, etc. Wherein, the source primary cell refers to a cell under the first access network device.

2)密钥，包括以下至少一项：接入网设备密钥、下一跳(Next Hop)密钥、RRC完整性保护密钥、NCC密钥。2) A key, including at least one of the following: an access network device key, a next hop (Next Hop) key, an RRC integrity protection key, and an NCC key.

3)源RLC配置(例如，RLC序列号(sequence number，SN)长度，RLC模式等)，源PDCP配置(例如PDCP SN长度等)，资源块(resource block，RB)配置，源逻辑信道配置等。3) Source RLC configuration (eg, RLC sequence number (SN) length, RLC mode, etc.), source PDCP configuration (eg PDCP SN length, etc.), resource block (resource block, RB) configuration, source logical channel configuration, etc. .

步骤408，第二接入网设备向第一接入网设备发送隧道建立请求，第一接入网设备根据隧道建立请求，建立第一接入网设备与第二接入网设备间用于数据传输的隧道。Step 408, the second access network device sends a tunnel establishment request to the first access network device, and the first access network device establishes a data connection between the first access network device and the second access network device according to the tunnel establishment request. transmission tunnel.

步骤409，第一接入网设备通过所述隧道向第二接入网设备发送下行数据。Step 409, the first access network device sends downlink data to the second access network device through the tunnel.

可选的，步骤4010，第二接入网设备根据终端设备的上下文，对所述下行数据进行处理。比如，加密，添加SN等。Optionally, in step 4010, the second access network device processes the downlink data according to the context of the terminal device. For example, encryption, adding SN, etc.

目前，第二接入网设备向终端设备传输下行数据的方式主要有两种，分别为第一传输方式和第二传输方式，以下是在RRC去活动态下，向终端设备发送下行数据的第二传输方式：At present, there are mainly two ways for the second access network device to transmit downlink data to the terminal device, namely, the first transmission mode and the second transmission mode. The following is the first method of sending downlink data to the terminal device in the RRC inactive state. Two transmission methods:

步骤4011a，如果不进入连接态，则第二接入网设备向终端设备发送RRC释放消息，所述RRC释放消息用于通知终端设备保持在RRC去活动态，所述RRC释放消息中包括下行数据。Step 4011a, if it does not enter the connected state, the second access network device sends an RRC release message to the terminal device, the RRC release message is used to notify the terminal device to remain in the RRC inactive state, and the RRC release message includes downlink data. .

以下是在RRC连接态下，向终端设备发送下行数据的第一传输方式：The following is the first transmission method for sending downlink data to the terminal device in the RRC connection state:

步骤4011b，如果进入连接态，则第二接入网设备向终端设备发送RRC恢复消息。Step 4011b, if the connected state is entered, the second access network device sends an RRC recovery message to the terminal device.

步骤4012b，终端设备在接收到RRC恢复消息后，恢复RRC连接，进入连接态。Step 4012b, after receiving the RRC recovery message, the terminal device recovers the RRC connection and enters the connected state.

步骤4013b，终端设备接收第二接入网设备发送的下行数据。Step 4013b, the terminal device receives the downlink data sent by the second access network device.

可选的，图4流程中不同步骤的先后顺序，仅为示意性说明，并不作为对本申请实施例的限定。通过上述可以看出，第二传输方式相对于第一传输方式，步骤较少，比较省电。但第二传输方式仅适用于数据量比较小的场景。以下提供的实施例可以针对具体的下行数据使得第二接入网设备选择合适的传输方式传输下行数据，提高传输效率。Optionally, the sequence of different steps in the flow of FIG. 4 is only for schematic illustration, and is not intended to limit the embodiments of the present application. It can be seen from the above that the second transmission mode has fewer steps and saves power compared with the first transmission mode. However, the second transmission method is only suitable for scenarios with relatively small data amount. The embodiments provided below may enable the second access network device to select an appropriate transmission mode to transmit downlink data for specific downlink data, thereby improving transmission efficiency.

如图5所示，提供一种通信方法，包括但不限于：As shown in Figure 5, a communication method is provided, including but not limited to:

步骤501，第一接入网设备接收来自核心网网元的下行数据。可选的，所述核心网网元可以为UPF网元。Step 501: The first access network device receives downlink data from a core network element. Optionally, the core network element may be a UPF network element.

步骤502，第一接入网设备向第二接入网设备发送下行数据。相应的，第二接入网设备接收来自第一接入网设备的下行数据。Step 502, the first access network device sends downlink data to the second access network device. Correspondingly, the second access network device receives downlink data from the first access network device.

步骤503，第一接入网设备向第二接入网设备发送第一消息。相应的，第二接入网设备接收来自第一接入网设备的第一消息。其中，第一消息用于确定向终端设备传输下行数据的方式，所述下行数据的传输方式包括第一传输方式或第二传输方式。可选的，第一消息可携带于上述图4所示流程中的步骤403中的RAN寻呼消息，或者，携带于上述图4所示流程中的步骤407中的上下文响应中，不作限定。Step 503, the first access network device sends a first message to the second access network device. Correspondingly, the second access network device receives the first message from the first access network device. Wherein, the first message is used to determine the mode of transmitting downlink data to the terminal device, and the transmission mode of the downlink data includes the first transmission mode or the second transmission mode. Optionally, the first message may be carried in the RAN paging message in step 403 in the flow shown in FIG. 4 , or carried in the context response in step 407 in the flow shown in FIG. 4 , which is not limited.

在一种可能的实现方式中，所述第一消息中包括下行数据的信息。可选的，所述下行数据的信息包括但不限于：下行数据的数据量、下行数据的协议数据单元(protocol data unit，PDU)会话信息、下行数据的服务质量流(quality of service flow，QoS flow)信息。第二接入网设备在接收到第一消息时，获取下行数据的信息，根据下行数据的信息，确定下行数据的传输方式。In a possible implementation manner, the first message includes downlink data information. Optionally, the information of the downlink data includes but is not limited to: the data volume of the downlink data, the protocol data unit (protocol data unit, PDU) session information of the downlink data, the quality of service flow (quality of service flow, QoS) of the downlink data flow) information. When receiving the first message, the second access network device obtains the information of the downlink data, and determines the transmission mode of the downlink data according to the information of the downlink data.

在另一种可能的实现方式中，所述第一接入网设备可根据下行数据的信息，确定下行数据的传输方式。且通过所述第一消息，将下行数据的传输方式，指示给第二接入网设备。例如，当第一接入网设备确定下行数据的传输方式为第一传输方式时，则所述第一消息中可包括第一传输方式的指示信息。而当第一接入网设备确定下行数据的传输方式为第二传输方式时，则所述第一消息中可包括第二传输方式的指示信息。或者，所述第一消息中可仅包括用于指示第一传输方式的指示信息。而当所述第一消息中没有携带任何指示信息时，第二接入网设备可默认采用第二传输方式传输下行数据。或者，所述第一消息中可仅包括用于指示第二传输方式的指示信息。而当所述第一消息中没有包括任何指示信息时，第二接入网设备可默认采用第一传输方式传输下行数据等。In another possible implementation manner, the first access network device may determine the transmission mode of the downlink data according to the information of the downlink data. And through the first message, the transmission mode of the downlink data is indicated to the second access network device. For example, when the first access network device determines that the transmission mode of the downlink data is the first transmission mode, the first message may include indication information of the first transmission mode. When the first access network device determines that the transmission mode of the downlink data is the second transmission mode, the first message may include indication information of the second transmission mode. Alternatively, the first message may only include indication information for indicating the first transmission mode. However, when the first message does not carry any indication information, the second access network device may transmit the downlink data by default in the second transmission mode. Alternatively, the first message may only include indication information for indicating the second transmission mode. However, when the first message does not include any indication information, the second access network device may use the first transmission mode to transmit downlink data by default.

可选的，第一接入网设备或第二接入网设备根据下行数据的信息，确定下行数据传输方式的过程，包括但不限于以下方式：Optionally, the first access network device or the second access network device determines the process of the downlink data transmission mode according to the information of the downlink data, including but not limited to the following methods:

1)、下行数据的数据量1), the amount of downlink data

由于下行数据的数据量较多时，终端设备处于连接态下发送所述下行数据的传输效率较高。因此，可当下行数据的数据量大于第一阈值时，采用所述第一传输方式传输下行数据。而当下行数据的数据量小于第一阈值时，可采用所述第二传输方式传输下行数据。当下行数据的数据量等于第一阈值时，可采用第一传输方式传输下行数据，也可采用第二传输方式传输下行数据，不作限定。所述第一阈值可为协议规定的，或者预配置的等，不作限定。Since the data volume of the downlink data is large, the transmission efficiency of sending the downlink data when the terminal device is in the connected state is high. Therefore, when the data amount of the downlink data is greater than the first threshold, the downlink data can be transmitted by using the first transmission mode. And when the data amount of the downlink data is less than the first threshold, the downlink data may be transmitted by using the second transmission mode. When the data volume of the downlink data is equal to the first threshold, the downlink data may be transmitted in the first transmission mode, or the downlink data may be transmitted in the second transmission mode, which is not limited. The first threshold may be specified in a protocol, or preconfigured, etc., which is not limited.

2)、下行数据的PDU会话信息2), PDU session information of downlink data

可选的，可根据下行数据的PDU会话信息，确定下行数据的数据量。例如，下行数据包括PDU会话1和PDU会话2，PDU会话1的数据量为1000字节，PDU会话2的数据量为2000字节，则下行数据的数据量为3000字节。之后，第一接入网设备或第二接入网设备再根据下行数据的数据量，判断采用第一传输方式或第二传输方式传输下行数据。比如，当下行数据的数据量大于第一阈值时，可采用第一传输方式，小于第一阈值时，采用第二传输方式等，不作限定。Optionally, the data amount of the downlink data may be determined according to the PDU session information of the downlink data. For example, the downlink data includes PDU session 1 and PDU session 2, the data volume of PDU session 1 is 1000 bytes, the data volume of PDU session 2 is 2000 bytes, and the data volume of downlink data is 3000 bytes. Afterwards, the first access network device or the second access network device determines to use the first transmission mode or the second transmission mode to transmit the downlink data according to the data volume of the downlink data. For example, when the data amount of the downlink data is greater than the first threshold, the first transmission mode can be used, and when it is smaller than the first threshold, the second transmission mode is used, etc., which are not limited.

3)、QoS flow信息3), QoS flow information

可选的，下行数据的QoS flow信息包括但不限于QoS标识、QoS flow标识、时延、优先级或丢包率等中的一个或多个。在一种可能的实现方式中，下行数据的QoS flow信息中包括QoS标识，所述QoS标识可以为5G QoS标识。第一接入网设备或第二接入网设备可根据上述QoS标识，确定下行数据的时延、优先级或丢包率等中的至少一个。例如，可根据QoS标识与时延、优先级或丢包率的对应关系，确定下行数据的时延、优先级或丢包率等。当下行数据的时延较大、优先级较低，和/或丢包率较高时，确定采用所述第二传输方式传输下行数据，否则确定采用所述第一传输方式传输下行数据。比如，可当以下条件中的一个或多个满足时：时延大于或等于第二阈值、优先级小于或等于第三阈值、丢包率大于或等于第四阈值，采用所述第二传输方式传输下行数据，否则采用第一传输方式传输下行数据。上述第二阈值、第三阈值或第四阈值可以为协议规定的，或者预配置的，不作限定。在另一种可能的实现方式中，当下行数据的QoS flow信息中包括下行数据的时延、优先级或丢包率时，第一接入网设备或第二接入网设备可直接根据下行数据的QoS信息中包括的时延、优先级或丢包率，确定采用第一传输方式或第二传输方式传输下行数据。Optionally, the QoS flow information of the downlink data includes, but is not limited to, one or more of a QoS identifier, a QoS flow identifier, a delay, a priority, or a packet loss rate. In a possible implementation manner, the QoS flow information of the downlink data includes a QoS identifier, and the QoS identifier may be a 5G QoS identifier. The first access network device or the second access network device may determine at least one of the time delay, priority, or packet loss rate of the downlink data according to the above-mentioned QoS identifier. For example, the delay, priority or packet loss rate of the downlink data can be determined according to the corresponding relationship between the QoS identifier and the delay, priority or packet loss rate. When the time delay of the downlink data is relatively large, the priority is relatively low, and/or the packet loss rate is relatively high, it is determined to use the second transmission mode to transmit the downlink data; otherwise, it is determined to use the first transmission mode to transmit the downlink data. For example, when one or more of the following conditions are satisfied: the delay is greater than or equal to the second threshold, the priority is less than or equal to the third threshold, and the packet loss rate is greater than or equal to the fourth threshold, the second transmission mode is adopted The downlink data is transmitted, otherwise the first transmission mode is used to transmit the downlink data. The above-mentioned second threshold, third threshold or fourth threshold may be specified in a protocol or preconfigured, which is not limited. In another possible implementation manner, when the QoS flow information of the downlink data includes the delay, priority or packet loss rate of the downlink data, the first access network device or the second access network device can directly The time delay, priority or packet loss rate included in the QoS information of the data determines that the first transmission mode or the second transmission mode is used to transmit downlink data.

可以理解的是，上述3种方式，可单独使用判断采用第一传输方式或第二传输方式传输所述下行数据。也可相结合使用判断采用第一传输方式或第二传输方式传输下行数据。例如，第一接入网设备或第二接入网设备，可在同时满足以下条件时，才确定采用第一传输方式：下行数据的数据量大于阈值，时延小于或等于第二阈值，优先级大于或等于第三阈值，丢包率小于或等于第四阈值等。It can be understood that, the above three methods can be used independently to determine whether to use the first transmission method or the second transmission method to transmit the downlink data. It can also be used in combination to determine whether to use the first transmission mode or the second transmission mode to transmit downlink data. For example, the first access network device or the second access network device may determine to adopt the first transmission mode only when the following conditions are met at the same time: the amount of downlink data is greater than the threshold, the delay is less than or equal to the second threshold, and the priority is given to The level is greater than or equal to the third threshold, the packet loss rate is less than or equal to the fourth threshold, and so on.

步骤504，第二接入网设备采用所确定的传输方式，向终端设备发送下行数据。Step 504, the second access network device sends downlink data to the terminal device using the determined transmission mode.

在一种可能的实现方式中，若确定采用第一传输方式传输下行数据。则第二接入网设备可向终端设备发送RRC恢复消息，所述RRC恢复消息用于通知终端设备进入连接态。终端设备接收到RRC恢复消息后，进入连接态。第二接入网设备向终端设备发送下行数据。In a possible implementation manner, if it is determined that the first transmission manner is used to transmit downlink data. Then, the second access network device may send an RRC recovery message to the terminal device, where the RRC recovery message is used to notify the terminal device to enter the connected state. After receiving the RRC recovery message, the terminal device enters the connected state. The second access network device sends downlink data to the terminal device.

在另一种可能的实现方式中，若确定采用第二传输方式传输下行数据。则第二接入网设备可向终端设备发送RRC释放消息，所述RRC释放消息用于通知终端设备停留在RRC去活动态，所述RRC释放消息中包括下行数据。In another possible implementation manner, if it is determined that the second transmission manner is used to transmit downlink data. Then, the second access network device may send an RRC release message to the terminal device, where the RRC release message is used to notify the terminal device to stay in the RRC inactive state, and the RRC release message includes downlink data.

在本申请实施例中，当终端设备处于去活动态时，第二接入网设备结合下行数据的信息，选择合适的方式传输下行数据。比如，在下行数据的数据量较小时，可采用第二传输方式传输下行数据，交互流程少，降低下行数据的传输时延。而在下行数据的数据量较大时，可采用第一传输方式传输下行数据，一次可传输更多的下行数据，提高下行数据的传输效率。综上，在本申请实施例中，根据当前数据的情况选择合适的方式传输下行数据，整体上降低时延和开销。对于数据用去活动态传输时，可以节省信令开销和资源；而对于数据用连接态传输时，可以提高数据的传输效率。In the embodiment of the present application, when the terminal device is in the inactive state, the second access network device selects an appropriate manner to transmit the downlink data in combination with the information of the downlink data. For example, when the data volume of the downlink data is small, the second transmission mode can be used to transmit the downlink data, and the interaction process is less, which reduces the transmission delay of the downlink data. When the amount of downlink data is relatively large, the first transmission mode can be used to transmit downlink data, more downlink data can be transmitted at one time, and the transmission efficiency of downlink data can be improved. To sum up, in the embodiment of the present application, an appropriate mode is selected to transmit downlink data according to the current data situation, so as to reduce the delay and overhead as a whole. When the data is transmitted in the active state, signaling overhead and resources can be saved; and when the data is transmitted in the connected state, the transmission efficiency of the data can be improved.

如图6所示，本申请实施例还提供一种通信方法流程，该流程适用于终端设备驻留的小区没有发生变换，终端设备始终驻留在第一接入网设备的小区下，且终端设备处于去活动态下，包括但不限于：As shown in FIG. 6 , an embodiment of the present application also provides a communication method flow, which is applicable to the fact that the cell where the terminal device resides has not changed, the terminal device always resides in the cell of the first access network device, and the terminal device resides in the cell of the first access network device. The device is inactive, including but not limited to:

步骤601，第一接入网设备接收来自核心网网元的下行数据。可选的，所述核心网网元可以为UPF网元。Step 601: The first access network device receives downlink data from a core network element. Optionally, the core network element may be a UPF network element.

步骤602，第一接入网设备根据下行数据的信息，确定向终端设备传输下行数据的方式，向终端设备传输下行数据的方式包括在RRC连接态下，向终端设备传输下行数据的第一传输方式和在RRC去活动态下，向终端设备传输下行数据的第二传输方式。关于根据下行数据的信息，确定下行数据的传输方式的过程，可参见上述记载，不再说明。Step 602, the first access network device determines a mode of transmitting downlink data to the terminal device according to the information of the downlink data, and the mode of transmitting the downlink data to the terminal device includes the first transmission of transmitting the downlink data to the terminal device in the RRC connection state. mode and the second transmission mode for transmitting downlink data to the terminal equipment in the RRC deactivation state. Regarding the process of determining the transmission mode of the downlink data according to the information of the downlink data, reference may be made to the above description, and will not be described again.

步骤603，第一接入网设备采用所确定的传输方式，向终端设备发送下行数据。Step 603, the first access network device sends downlink data to the terminal device by using the determined transmission mode.

可选的，若确定采用第一传输方式，则第一接入网设备可向终端设备发送RRC恢复消息，所述RRC恢复消息用于指示终端设备进入RRC连接态。终端设备接收到RRC恢复消息后，进入RRC连接态。第一接入网设备向终端设备发送下行数据。Optionally, if it is determined to adopt the first transmission mode, the first access network device may send an RRC recovery message to the terminal device, where the RRC recovery message is used to instruct the terminal device to enter the RRC connected state. After receiving the RRC recovery message, the terminal device enters the RRC connected state. The first access network device sends downlink data to the terminal device.

或者，若确定采用第二传输方式，则第一接入网设备可向终端设备发送RRC释放消息，所述RRC释放消息用于指示终端设备停留在RRC去活动态，所述RRC释放消息中包括所述下行数据。Or, if it is determined to adopt the second transmission mode, the first access network device may send an RRC release message to the terminal device, where the RRC release message is used to instruct the terminal device to stay in the RRC inactive state, and the RRC release message includes the downlink data.

通过上述，第一接入网设备可结合下行数据的情况，选择合适的方式传输下行数据，整体上降低时延和开销。具体的，用连接态传输对应的下行数据，可提高数据传输的效率。用去活动态传输对应的下行数据，可节省信令开销和资源。Through the above, the first access network device can select an appropriate way to transmit the downlink data in combination with the situation of the downlink data, so as to reduce the delay and overhead as a whole. Specifically, transmitting the corresponding downlink data in the connected state can improve the efficiency of data transmission. By deactivating the dynamic transmission of corresponding downlink data, signaling overhead and resources can be saved.

以上结合图1至图6详细说明了本申请实施例所提供的方法。以下结合图7和图8详细说明本申请实施例所提供的装置。应理解，装置与方法实施例的描述相互对应，装置中未详细描述的内容可参见上文方法实施例中的描述。The methods provided by the embodiments of the present application have been described in detail above with reference to FIG. 1 to FIG. 6 . The apparatus provided by the embodiments of the present application will be described in detail below with reference to FIG. 7 and FIG. 8 . It should be understood that the descriptions of the apparatus and the method embodiments correspond to each other, and for content not described in detail in the apparatus, reference may be made to the descriptions in the above method embodiments.

图7是本申请实施例提供的装置700的示意性框图，用于实现上述方法中第一接入网设备或第二接入网设备的功能。例如，装置700可以为软件单元或芯片***。所述芯片***可以由芯片构成，也可以包括芯片和其它分立器件。该装置包括通信单元701，还可包括处理单元702。通信单元701，可以与外部进行通信。处理单元702，用于进行处理。通信单元701，还可以称为通信接口、收发单元、输入\输出接口等。FIG. 7 is a schematic block diagram of an apparatus 700 provided by an embodiment of the present application, which is used to implement the functions of the first access network device or the second access network device in the foregoing method. For example, the apparatus 700 may be a software unit or a system-on-a-chip. The chip system may be composed of chips, and may also include chips and other discrete devices. The apparatus includes a communication unit 701 and may further include a processing unit 702 . The communication unit 701 can communicate with the outside. The processing unit 702 is used for processing. The communication unit 701 may also be referred to as a communication interface, a transceiver unit, an input/output interface, and the like.

在一种示例中，装置700可实现上述图5所示流程中第一接入网设备执行的步骤。所述装置700可以是第一接入网设备，或者配置于第一接入网设备中的芯片或电路。通信单元701执行上文图5方法实施例中第一接入网设备的收发操作，处理单元702用于执行上文图5方法实施例中第一接入网设备侧的处理相关操作。可选的，上述通信单元701可包括与核心网网元通信的第一通信单元，以及与第二接入网设备通信的第二通信单元。In an example, the apparatus 700 may implement the steps performed by the first access network device in the above-mentioned process shown in FIG. 5 . The apparatus 700 may be a first access network device, or a chip or circuit configured in the first access network device. The communication unit 701 performs the sending and receiving operations of the first access network device in the above method embodiment of FIG. 5 , and the processing unit 702 is configured to perform processing related operations on the first access network device side in the above method embodiment of FIG. 5 . Optionally, the above-mentioned communication unit 701 may include a first communication unit that communicates with a core network element, and a second communication unit that communicates with a second access network device.

例如，第一通信单元，用于接收来自核心网网元的下行数据。第二通信单元，用于向第二接入网设备发送所述下行数据，以及向第二接入网设备发送第一消息，所述第一消息用于确定所述下行数据的传输方式，所述下行数据的传输方式包括在无线资源控制RRC连接态下，向终端设备发送所述下行数据的第一传输方式，或在RRC去活动态下，向所述终端设备发送所述下行数据的第二传输方式。For example, the first communication unit is configured to receive downlink data from the core network element. The second communication unit is configured to send the downlink data to the second access network device, and send a first message to the second access network device, where the first message is used to determine the transmission mode of the downlink data, so The transmission mode of the downlink data includes the first transmission mode of sending the downlink data to the terminal device in the RRC connected state, or the first transmission mode of sending the downlink data to the terminal device in the RRC inactive state. Two transmission methods.

可选的，所述第一消息中包括下行数据的信息，所述下行数据的信息中包括以下参数中的一项或多项：所述下行数据的数据量，所述下行数据的协议数据单元PDU会话信息，所述下行数据的服务质量流信息。Optionally, the first message includes downlink data information, and the downlink data information includes one or more of the following parameters: the data volume of the downlink data, the protocol data unit of the downlink data PDU session information, QoS flow information of the downlink data.

可选的，处理单元702，可用于根据所述下行数据的信息，确定所述第一传输方式或所述第二传输方式；第二通信单元，用于向所述第二接入网设备发送所述第一消息，所述第一消息中包括所述第一传输方式的指示信息，或者，所述第二传输方式的指示信息。Optionally, the processing unit 702 can be configured to determine the first transmission mode or the second transmission mode according to the information of the downlink data; the second communication unit is configured to send to the second access network device In the first message, the first message includes the indication information of the first transmission mode, or the indication information of the second transmission mode.

可选的，所述下行数据的信息中包括所述下行数据的数据量，上述根据所述下行数据的信息，确定所述第一传输方式或所述第二传输方式，包括：所述下行数据的数据量大于第一阈值，确定所述第一传输方式；或者，所述下行数据的数据量小于所述第一阈值，确定所述第二传输方式；或者，所述下行数据的数据量等于所述第一阈值，确定所述第一传输方式或所述第二传输方式。Optionally, the information of the downlink data includes the data amount of the downlink data, and the first transmission mode or the second transmission mode is determined according to the information of the downlink data, including: the downlink data If the data volume of the downlink data is greater than the first threshold, determine the first transmission mode; or, if the data volume of the downlink data is less than the first threshold, determine the second transmission mode; or, the data volume of the downlink data is equal to The first threshold determines the first transmission mode or the second transmission mode.

可选的，所述下行数据的服务质量流信息包括服务质量标识QI、时延、优先级或丢包率中的至少一个。Optionally, the QoS flow information of the downlink data includes at least one of QoS identifier QI, delay, priority or packet loss rate.

在一种示例中，装置700用于实现上述图5方法实施例中第二接入网设备执行的步骤，所述装置700可以是第二接入网设备，或者配置于第二接入网设备中的芯片或电路。通信单元701执行上述图5方法实施例中第二接入网设备的收发操作。处理单元702用于执行上述图5方法实施例中第二接入网设备的处理相关操作。可选的，通信单元701可包括与第一接入网设备通信的第三通信单元，以及与终端设备通信的第四通信单元。In an example, the apparatus 700 is configured to implement the steps performed by the second access network device in the above method embodiment of FIG. 5 , and the apparatus 700 may be the second access network device or be configured on the second access network device chip or circuit. The communication unit 701 performs the transceiving operation of the second access network device in the method embodiment of FIG. 5 above. The processing unit 702 is configured to perform processing-related operations of the second access network device in the above method embodiment of FIG. 5 . Optionally, the communication unit 701 may include a third communication unit that communicates with the first access network device, and a fourth communication unit that communicates with the terminal device.

比如，第三通信单元，用于接收来自第一接入网设备的第一消息；处理单元702，用于根据第一消息，确定下行数据的传输方式，所述下行数据的传输方式包括在无线资源控制RRC连接态下，向终端设备发送所述下行数据的第一传输方式，或在RRC去活动态下，向所述终端设备发送所述下行数据的第二传输方式；第四通信单元，用于采用所述确定的传输方式，向终端设备发送所述下行数据。For example, the third communication unit is configured to receive the first message from the first access network device; the processing unit 702 is configured to determine the transmission mode of the downlink data according to the first message, and the transmission mode of the downlink data includes the wireless In the resource control RRC connected state, the first transmission mode of sending the downlink data to the terminal device, or the second transmission mode of sending the downlink data to the terminal device in the RRC deactivated state; the fourth communication unit, for sending the downlink data to the terminal device using the determined transmission mode.

可选的，所述第一消息中包括下行数据的信息，所述下行数据的信息中包括以下参数中的一项或多项：所述下行数据的数据量，所述下行数据的协议数据单元PDU会话信息，所述下行数据的服务质量流信息，上述根据所述第一消息，确定所述下行数据的传输方式，包括：根据所述下行数据的信息，确定所述下行数据的传输方式。Optionally, the first message includes downlink data information, and the downlink data information includes one or more of the following parameters: the data volume of the downlink data, the protocol data unit of the downlink data PDU session information, QoS flow information of the downlink data, and determining the transmission mode of the downlink data according to the first message includes: determining the transmission mode of the downlink data according to the information of the downlink data.

可选的，所述下行数据的信息中包括所述下行数据的数据量，上述根据所述下行数据的信息，确定所述下行数据的传输方式，包括：所述下行数据的数据量大于第一阈值，确定所述第一传输方式；或者，所述下行数据的数据量小于所述第一阈值，确定所述第二传输方式；或者，所述下行数据的数据量等于所述第一阈值，确定所述第一传输方式或所述第二传输方式。Optionally, the information of the downlink data includes the data volume of the downlink data, and determining the transmission mode of the downlink data according to the information of the downlink data includes: the data volume of the downlink data is greater than the first threshold, determine the first transmission mode; or, if the data volume of the downlink data is less than the first threshold, determine the second transmission mode; or, the data volume of the downlink data is equal to the first threshold, The first transmission method or the second transmission method is determined.

可选的，所述第一消息中包括第一传输方式的指示信息，或第二传输方式的指示信息，上述根据所述第一消息，确定所述下行数据的传输方式，包括：所述第一消息中包括所述第一传输方式的指示信息，确定所述下行数据的传输方式为所述第一传输方式；或者，所述第一消息中携带有第二传输方式的指示信息，确定所述下行数据的传输方式为所述第二传输方式。Optionally, the first message includes indication information of a first transmission mode or indication information of a second transmission mode, and determining the transmission mode of the downlink data according to the first message includes: the first transmission mode. A message includes the indication information of the first transmission mode, and it is determined that the transmission mode of the downlink data is the first transmission mode; or, the first message carries the indication information of the second transmission mode, and the The transmission mode of the downlink data is the second transmission mode.

可选的，上述采用所述确定的传输方式，向终端设备发送所述下行数据，包括：确定采用所述第一传输方式向终端设备发送所述下行数据，向所述终端设备发送RRC恢复消息，所述RRC恢复消息用于指示所述终端设备进入RRC连接态；向所述终端设备发送所述下行数据。Optionally, using the determined transmission mode to send the downlink data to the terminal device includes: determining to use the first transmission mode to send the downlink data to the terminal device, and sending an RRC recovery message to the terminal device , the RRC recovery message is used to instruct the terminal device to enter the RRC connected state; and send the downlink data to the terminal device.

可选的，上述采用所述确定的传输方式，向终端设备发送所述下行数据，包括：确定采用所述第二传输方式向终端设备发送所述下行数据，向所述终端设备发送RRC释放消息，所述RRC释放消息用于通知所述终端设备停留在RRC去活动态，所述RRC释放消息中包括所述下行数据。Optionally, using the determined transmission mode to send the downlink data to the terminal device includes: determining to use the second transmission mode to send the downlink data to the terminal device, and sending an RRC release message to the terminal device , the RRC release message is used to notify the terminal device to stay in the RRC inactive state, and the RRC release message includes the downlink data.

在一种示例中，装置700可实现上述图6方法实施例中第一接入网设备执行的步骤，所述装置700可以是第一接入网设备，或者配置于第一接入网设备中的芯片或电路。通信单元701执行上述图6方法实施例中第一接入网设备的收发操作，处理单元702用于执行上述图6方法实施例中第一接入网设备的处理相关操作。上述通信单元701包括与核心网网元通信的第五通信单元，以及与终端设备通信的第六通信单元。In an example, the apparatus 700 may implement the steps performed by the first access network device in the above method embodiment of FIG. 6 , and the apparatus 700 may be the first access network device or be configured in the first access network device chip or circuit. The communication unit 701 performs the sending and receiving operations of the first access network device in the above method embodiment of FIG. 6 , and the processing unit 702 is configured to perform processing related operations of the first access network device in the above method embodiment of FIG. 6 . The above-mentioned communication unit 701 includes a fifth communication unit that communicates with the core network element, and a sixth communication unit that communicates with the terminal device.

比如，第五通信单元，用于接收来自核心网网元的下行数据；处理单元702，用于根据所述下行数据的信息，确定下行数据的传输方式，所述下行数据的传输方式包括在无线资源控制RRC连接态下，向终端设备发送所述下行数据的第一传输方式，或在RRC去活动态下，向所述终端设备发送所述下行数据的第二传输方式；第六通信单元，用于采用所确定的传输方式，向终端设备发送所述下行数据。For example, the fifth communication unit is configured to receive the downlink data from the core network element; the processing unit 702 is configured to determine the transmission mode of the downlink data according to the information of the downlink data, and the transmission mode of the downlink data includes the wireless In the resource control RRC connected state, the first transmission mode of sending the downlink data to the terminal device, or the second transmission mode of sending the downlink data to the terminal device in the RRC deactivated state; the sixth communication unit, It is used for sending the downlink data to the terminal device using the determined transmission mode.

可选的，所述下行数据的信息包括以下参数中的一项或多项：所述下行数据的数据量，所述下行数据的协议数据单元PDU会话信息，所述下行数据的服务质量流信息。Optionally, the information of the downlink data includes one or more of the following parameters: the data volume of the downlink data, the protocol data unit PDU session information of the downlink data, the quality of service flow information of the downlink data .

可选的，所述下行数据的信息中包括所述下行数据的数据量，根据所述下行数据的信息，确定所述下行数据的传输方式，包括：所述下行数据的数据量大于第一阈值，确定所述第一传输方式；或者，所述下行数据的数据量小于所述第一阈值，确定所述第二传输方式；或者，所述下行数据的数据量等于所述第一阈值，确定所述第一传输方式或所述第二传输方式。Optionally, the information of the downlink data includes the data amount of the downlink data, and determining the transmission mode of the downlink data according to the information of the downlink data, including: the data amount of the downlink data is greater than a first threshold , determine the first transmission mode; or, if the data volume of the downlink data is less than the first threshold, determine the second transmission mode; or, if the data volume of the downlink data is equal to the first threshold, determine the first transmission method or the second transmission method.

可选的，上述采用所确定的传输方式，向终端设备发送所述下行数据，包括：确定采用所述第一传输方式向所述终端设备发送所述下行数据，向所述终端设备发送RRC恢复消息，所述RRC恢复消息用于指示所述终端设备进入RRC连接态；向所述终端设备发送所述下行数据。Optionally, using the determined transmission mode to send the downlink data to the terminal device includes: determining to use the first transmission mode to send the downlink data to the terminal device, and sending the RRC recovery data to the terminal device message, the RRC recovery message is used to instruct the terminal device to enter the RRC connected state; send the downlink data to the terminal device.

可选的，上述采用所确定的传输方式，向终端设备发送所述下行数据，包括：确定采用所述第二传输方式向所述终端设备发送所述下行数据，向所述终端设备发送RRC释放消息，所述RRC释放消息用于通知所述终端设备停留在RRC去活动态，所述RRC释放消息中携带有所述下行数据。Optionally, using the determined transmission mode to send the downlink data to the terminal device includes: determining to use the second transmission mode to send the downlink data to the terminal device, and sending an RRC release to the terminal device. message, the RRC release message is used to notify the terminal device to stay in the RRC inactive state, and the RRC release message carries the downlink data.

本申请实施例中对单元的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，另外，在本申请各个实施例中的各功能单元可以集成在一个处理器中，也可以是单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。The division of units in the embodiments of the present application is schematic, and is only a logical function division. In actual implementation, there may be other division methods. In addition, the functional units in the various embodiments of the present application may be integrated into one processing unit. In the device, it can also exist physically alone, or two or more units can be integrated into one unit. The above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.

可以理解的是，上述实施例中的通信单元的功能可以由收发器实现，处理单元的功能可以由处理器实现。收发器可以包括发射器和/或接收器等，分别用于实现发送单元和/或接收单元的功能。以下结合图8举例进行说明。It can be understood that, the function of the communication unit in the above embodiments may be implemented by a transceiver, and the function of the processing unit may be implemented by a processor. The transceiver may include a transmitter and/or a receiver, etc., for respectively implementing the functions of the transmitting unit and/or the receiving unit. The following description is given with reference to FIG. 8 as an example.

图8是本申请实施例提供的装置800的示意性框图，图8所示的装置800可以为图7所示的装置的一种硬件电路的实现方式。该装置可执行上述方法实施例中第一接入网设备或第二接入网设备的功能。为了便于说明，图8仅示出该通信装置的主要部件。FIG. 8 is a schematic block diagram of an apparatus 800 provided by an embodiment of the present application. The apparatus 800 shown in FIG. 8 may be a hardware circuit implementation of the apparatus shown in FIG. 7 . The apparatus may perform the functions of the first access network device or the second access network device in the foregoing method embodiments. For convenience of explanation, FIG. 8 only shows the main components of the communication device.

图8所示的通信装置800包括至少一个处理器801。通信装置800还可以包括至少一个存储器802，用于存储程序指令和/或数据。存储器802和处理器801耦合。本申请实施例中的耦合是装置、单元或模块之间的间接耦合或通信连接，可以是电性、机械性或其它的形式，用于装置、单元或模块之间的信息交互。处理器801可以和存储器802协同操作，处理器801可以执行存储器802中存储的程序指令，所述至少一个存储器802中的至少一个可以包括于处理器801中。The communication apparatus 800 shown in FIG. 8 includes at least one processor 801 . Communication apparatus 800 may also include at least one memory 802 for storing program instructions and/or data. Memory 802 is coupled to processor 801 . The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules. The processor 801 may cooperate with the memory 802 , the processor 801 may execute program instructions stored in the memory 802 , and at least one of the at least one memory 802 may be included in the processor 801 .

装置800还可以包括通信接口803，用于通过传输介质和其它设备进行通信，从而用于通信装置800可以和其它设备进行通信。在本申请实施例中，通信接口可以是收发器、电路、总线、模块或其它类型的通信接口。在本申请实施例中，通信接口为收发器时，收发器可以包括独立的接收器、独立的发射器；也可以集成收发功能的收发器、或者是接口电路。The apparatus 800 may also include a communication interface 803 for communicating with other devices through a transmission medium, so that the communication apparatus 800 may communicate with other devices. In this embodiment of the present application, the communication interface may be a transceiver, a circuit, a bus, a module, or other types of communication interfaces. In this embodiment of the present application, when the communication interface is a transceiver, the transceiver may include an independent receiver and an independent transmitter; it may also be a transceiver integrating a transceiver function, or an interface circuit.

应理解，本申请实施例中不限定上述处理器801、存储器802以及通信接口803之间的连接介质。本申请实施例在图8中以存储器802、处理器801以及通信接口803之间通过通信总线804连接，总线在图8中以粗线表示，其它部件之间的连接方式，仅是示意性说明，并不作为限定。所述总线可以包括地址总线、数据总线、控制总线等。为了便于表示，图8中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线等。It should be understood that the connection medium between the processor 801 , the memory 802 , and the communication interface 803 is not limited in this embodiment of the present application. In the embodiment of the present application, the memory 802, the processor 801, and the communication interface 803 are connected through a communication bus 804 in FIG. 8, and the bus is represented by a thick line in FIG. 8, and the connection mode between other components is only a schematic illustration , not as a limitation. The bus may include an address bus, a data bus, a control bus, and the like. For convenience of presentation, only one thick line is used in FIG. 8, but it does not mean that there is only one bus or one type of bus.

在一种示例中，装置800用于实现上文图5方法实施例中第一接入网设备执行的步骤。通信接口803用于执行上文图5方法实施例中第一接入网设备的收发相关操作，处理器801用于执行上文图5方法实施例中第一接入网设备侧的处理相关操作。通信接口803可包括与核心网网元通信的第一通信接口和与第二接入网网元通信的第二通信接口。In an example, the apparatus 800 is configured to implement the steps performed by the first access network device in the method embodiment of FIG. 5 above. The communication interface 803 is configured to perform the operations related to sending and receiving of the first access network device in the method embodiment of FIG. 5 above, and the processor 801 is configured to perform the processing-related operations on the side of the first access network device in the method embodiment of FIG. 5 above. . The communication interface 803 may include a first communication interface for communicating with a core network element and a second communication interface for communicating with a second access network element.

例如，第一通信接口，用于接收来自核心网网元的下行数据。第二通信接口，用于向第二接入网设备发送所述下行数据，以及向第二接入网设备发送第一消息，所述第一消息用于确定所述下行数据的传输方式，所述下行数据的传输方式包括在无线资源控制RRC连接态下，向终端设备发送所述下行数据的第一传输方式，或在RRC去活动态下，向所述终端设备发送所述下行数据的第二传输方式。For example, the first communication interface is used to receive downlink data from the core network element. The second communication interface is used for sending the downlink data to the second access network device, and sending a first message to the second access network device, where the first message is used to determine the transmission mode of the downlink data, so The transmission mode of the downlink data includes the first transmission mode of sending the downlink data to the terminal device in the RRC connected state, or the first transmission mode of sending the downlink data to the terminal device in the RRC inactive state. Two transmission methods.

可选的，处理器801，可用于根据所述下行数据的信息，确定所述第一传输方式或所述第二传输方式；第二通信接口，用于向所述第二接入网设备发送所述第一消息，所述第一消息中包括所述第一传输方式的指示信息，或者，所述第二传输方式的指示信息。Optionally, the processor 801 can be configured to determine the first transmission mode or the second transmission mode according to the information of the downlink data; the second communication interface is configured to send the data to the second access network device In the first message, the first message includes the indication information of the first transmission mode, or the indication information of the second transmission mode.

在另一种示例中，装置800用于实现上文图5方法实施例中第二接入网设备执行的步骤。通信接口803用于执行上文图5方法实施例中第二接入网设备的收发相关操作，处理器801用于执行上文图5方法实施例中第二接入网设备侧的处理相关操作。通信接口803可包括与第一接入网设备通信的第三通信接口和与终端设备通信的第四通信接口。In another example, the apparatus 800 is configured to implement the steps performed by the second access network device in the method embodiment of FIG. 5 above. The communication interface 803 is configured to perform the operations related to sending and receiving of the second access network device in the method embodiment of FIG. 5 above, and the processor 801 is configured to perform the processing-related operations on the side of the second access network device in the method embodiment of FIG. 5 above. . The communication interface 803 may include a third communication interface for communicating with the first access network device and a fourth communication interface for communicating with the terminal device.

比如，第三通信接口，用于接收来自第一接入网设备的第一消息；处理器801，用于根据第一消息，确定下行数据的传输方式，所述下行数据的传输方式包括在无线资源控制RRC连接态下，向终端设备发送所述下行数据的第一传输方式，或在RRC去活动态下，向所述终端设备发送所述下行数据的第二传输方式；第四通信接口，用于采用所述确定的传输方式，向终端设备发送所述下行数据。For example, the third communication interface is used to receive the first message from the first access network device; the processor 801 is used to determine the transmission mode of the downlink data according to the first message, and the transmission mode of the downlink data includes the wireless In the resource control RRC connected state, the first transmission mode of sending the downlink data to the terminal device, or the second transmission mode of sending the downlink data to the terminal device in the RRC deactivated state; the fourth communication interface, for sending the downlink data to the terminal device using the determined transmission mode.

在另一种示例中，装置800用于上文图6方法实施例中第一接入网设备执行的步骤。通信接口803用于执行上文图6方法实施例中第一接入网设备的收发相关操作，处理器801用于执行上文图6方法实施例中第一接入网设备侧的处理相关操作。通信接口803包括与核心网网元通信的第五通信接口，以及与终端设备通信的第六通信接口。In another example, the apparatus 800 is used for the steps performed by the first access network device in the method embodiment of FIG. 6 above. The communication interface 803 is configured to perform the operations related to sending and receiving of the first access network device in the method embodiment of FIG. 6 above, and the processor 801 is configured to perform the processing related operations on the side of the first access network device in the method embodiment of FIG. 6 above. . The communication interface 803 includes a fifth communication interface for communicating with core network elements, and a sixth communication interface for communicating with terminal equipment.

比如，第五通信接口，用于接收来自核心网网元的下行数据；处理器801，用于根据所述下行数据的信息，确定下行数据的传输方式，所述下行数据的传输方式包括在无线资源控制RRC连接态下，向终端设备发送所述下行数据的第一传输方式，或在RRC去活动态下，向所述终端设备发送所述下行数据的第二传输方式；第六通信接口，用于采用所确定的传输方式，向终端设备发送所述下行数据。For example, the fifth communication interface is used to receive downlink data from the core network element; the processor 801 is used to determine the transmission mode of the downlink data according to the information of the downlink data, and the transmission mode of the downlink data includes the wireless In the resource control RRC connected state, the first transmission mode of sending the downlink data to the terminal device, or the second transmission mode of sending the downlink data to the terminal device in the RRC inactive state; the sixth communication interface, It is used for sending the downlink data to the terminal device using the determined transmission mode.

进一步的，本申请实施例还提供一种装置，所述装置用于执行上文图5或图6方法实施例中的方法。一种计算机可读存储介质，包括程序，当所述程序被处理器运行时，上文图5或图6方法实施例中的方法被执行。一种计算机程序产品，所述计算机程序产品包括计算机程序代码，当所述计算机程序代码在计算机上运行时，使得计算机实现上文图5或图6方法实施例中的方法。一种芯片，包括：处理器，所述处理器与存储器耦合，所述存储器用于存储程序或指令，当所述程序或指令被所述处理器执行时，使得装置执行上文图5或图6方法实施例中的方法。一种***，包括执行上文方法实施例的第一接入网设备、终端设备、核心网网元或第二接入网设备中的至少一个。Further, an embodiment of the present application further provides an apparatus, where the apparatus is configured to execute the method in the above method embodiment of FIG. 5 or FIG. 6 . A computer-readable storage medium including a program, when the program is executed by a processor, the method in the above method embodiment of FIG. 5 or FIG. 6 is executed. A computer program product comprising computer program code, when the computer program code is run on a computer, causes the computer to implement the method in the above method embodiment of FIG. 5 or FIG. 6 . A chip, comprising: a processor coupled with a memory for storing programs or instructions, which, when executed by the processor, cause an apparatus to execute the above FIG. 5 or FIG. 6 Methods in Method Examples. A system includes at least one of a first access network device, a terminal device, a core network network element, or a second access network device that perform the above method embodiments.

本申请实施例中，处理器可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件，可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。In this embodiment of the present application, the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, which may be implemented or executed The methods, steps, and logical block diagrams disclosed in the embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the methods disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.

在本申请实施例中，存储器可以是非易失性存储器，比如硬盘(hard disk drive，HDD)或固态硬盘(solid-state drive，SSD)等，还可以是易失性存储器(volatile memory)，例如随机存取存储器(random-access memory，RAM)。存储器是能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。本申请实施例中的存储器还可以是电路或者其它任意能够实现存储功能的装置，用于存储程序指令和/或数据。In this embodiment of the present application, the memory may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or may also be a volatile memory (volatile memory), for example Random-access memory (RAM). Memory is, but is not limited to, any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory in this embodiment of the present application may also be a circuit or any other device capable of implementing a storage function, for storing program instructions and/or data.

本申请实施例提供的方法中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本发明实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、网络设备、用户设备或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，简称DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机可以存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，数字视频光盘(digital video disc，简称DVD))、或者半导体介质(例如,SSD)等。The methods provided in the embodiments of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present invention are generated. The computer may be a general purpose computer, a special purpose computer, a computer network, network equipment, user equipment, or other programmable apparatus. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server, or data center Transmission to another website site, computer, server or data center by wire (eg coaxial cable, optical fiber, digital subscriber line, DSL for short) or wireless (eg infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available media that can be accessed by a computer, or a data storage device such as a server, data center, etc. that includes one or more available media integrated. The usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, digital video discs (DVD)), or semiconductor media (eg, SSDs), and the like.

显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

一种通信方法，其特征在于，包括：A communication method, comprising:

第一接入网设备接收来自核心网网元的下行数据；the first access network device receives downlink data from the core network element;

所述第一接入网设备向第二接入网设备发送所述下行数据；sending, by the first access network device, the downlink data to the second access network device;

所述第一接入网设备向所述第二接入网设备发送第一消息，所述第一消息用于确定所述下行数据的传输方式，所述下行数据的传输方式包括在无线资源控制RRC连接态下，向终端设备发送所述下行数据的第一传输方式，或在RRC去活动态下，向所述终端设备发送所述下行数据的第二传输方式。The first access network device sends a first message to the second access network device, where the first message is used to determine the transmission mode of the downlink data, and the transmission mode of the downlink data is included in the radio resource control. In the RRC connected state, the first transmission mode of the downlink data is sent to the terminal device, or in the RRC deactivated state, the second transmission mode of the downlink data is sent to the terminal device.
如权利要求1所述的方法，其特征在于，所述第一消息中包括下行数据的信息，所述下行数据的信息中包括以下参数中的一项或多项：所述下行数据的数据量，所述下行数据的协议数据单元PDU会话信息，所述下行数据的服务质量流信息。The method of claim 1, wherein the first message includes downlink data information, and the downlink data information includes one or more of the following parameters: a data volume of the downlink data , the protocol data unit PDU session information of the downlink data, and the QoS flow information of the downlink data.
如权利要求1所述的方法，其特征在于，所述第一接入网设备向所述第二接入网设备发送第一消息，包括：The method according to claim 1, wherein the sending, by the first access network device, the first message to the second access network device comprises:

所述第一接入网设备根据所述下行数据的信息，确定所述第一传输方式或所述第二传输方式；The first access network device determines the first transmission mode or the second transmission mode according to the information of the downlink data;

所述第一接入网设备向所述第二接入网设备发送所述第一消息，所述第一消息中包括所述第一传输方式的指示信息，或者，所述第二传输方式的指示信息。The first access network device sends the first message to the second access network device, where the first message includes the indication information of the first transmission mode, or the information of the second transmission mode is Instructions.
如权利要求3所述的方法，其特征在于，所述下行数据的信息中包括所述下行数据的数据量，所述第一接入网设备根据所述下行数据的信息，确定所述第一传输方式或所述第二传输方式，包括：The method of claim 3, wherein the information of the downlink data includes a data amount of the downlink data, and the first access network device determines the first access network device according to the information of the downlink data The transmission method or the second transmission method, including:

所述下行数据的数据量大于第一阈值，所述第一接入网设备确定所述第一传输方式；或者，The data amount of the downlink data is greater than a first threshold, and the first access network device determines the first transmission mode; or,

所述下行数据的数据量小于所述第一阈值，所述第一接入网设备确定所述第二传输方式；或者，The data amount of the downlink data is less than the first threshold, and the first access network device determines the second transmission mode; or,

所述下行数据的数据量等于所述第一阈值，所述第一接入网设备确定所述第一传输方式或所述第二传输方式。The data volume of the downlink data is equal to the first threshold, and the first access network device determines the first transmission mode or the second transmission mode.
如权利要求2至4中任一项所述的方法，其特征在于，所述下行数据的服务质量流信息包括服务质量标识QI、时延、优先级或丢包率中的至少一个。The method according to any one of claims 2 to 4, wherein the quality of service flow information of the downlink data includes at least one of a quality of service identifier (QI), a delay, a priority, or a packet loss rate.
一种通信方法，其特征在于，包括：A communication method, comprising:

第二接入网设备接收来自第一接入网设备的第一消息；The second access network device receives the first message from the first access network device;

所述第二接入网设备根据所述第一消息，确定下行数据的传输方式，所述下行数据的传输方式包括在无线资源控制RRC连接态下，向终端设备发送所述下行数据的第一传输方式，或在RRC去活动态下，向所述终端设备发送所述下行数据的第二传输方式；The second access network device determines the transmission mode of the downlink data according to the first message, and the transmission mode of the downlink data includes sending the first transmission mode of the downlink data to the terminal device in the RRC connection state of the radio resource control. transmission mode, or a second transmission mode for sending the downlink data to the terminal device in the RRC deactivation state;

所述第二接入网设备采用所述确定的传输方式，向终端设备发送所述下行数据。The second access network device uses the determined transmission mode to send the downlink data to the terminal device.
如权利要求6所述的方法，其特征在于，所述第一消息中包括下行数据的信息，所述下行数据的信息中包括以下参数中的一项或多项：所述下行数据的数据量，所述下行数据的协议数据单元PDU会话信息，所述下行数据的服务质量流信息，所述第二接入网设备根据所述第一消息，确定所述下行数据的传输方式，包括：The method of claim 6, wherein the first message includes downlink data information, and the downlink data information includes one or more of the following parameters: a data volume of the downlink data , the protocol data unit PDU session information of the downlink data, the quality of service flow information of the downlink data, and the second access network device determining the transmission mode of the downlink data according to the first message, including:

所述第二接入网设备根据所述下行数据的信息，确定所述下行数据的传输方式。The second access network device determines the transmission mode of the downlink data according to the information of the downlink data.
如权利要求7所述的方法，其特征在于，所述下行数据的信息中包括所述下行数据的数据量，所述第二接入网设备根据所述下行数据的信息，确定所述下行数据的传输方式，包括：The method according to claim 7, wherein the information of the downlink data includes a data amount of the downlink data, and the second access network device determines the downlink data according to the information of the downlink data transmission methods, including:

所述下行数据的数据量大于第一阈值，所述第二接入网设备确定所述第一传输方式；或者，The data volume of the downlink data is greater than the first threshold, and the second access network device determines the first transmission mode; or,

所述下行数据的数据量小于所述第一阈值，所述第二接入网设备确定所述第二传输方式；或者，The data amount of the downlink data is less than the first threshold, and the second access network device determines the second transmission mode; or,

所述下行数据的数据量等于所述第一阈值，所述第二接入网设备确定所述第一传输方式或所述第二传输方式。The data volume of the downlink data is equal to the first threshold, and the second access network device determines the first transmission mode or the second transmission mode.
如权利要求7或8所述的方法，其特征在于，所述下行数据的服务质量流信息包括服务质量标识QI、时延、优先级或丢包率中的至少一个。The method according to claim 7 or 8, wherein the quality of service flow information of the downlink data includes at least one of a quality of service identifier (QI), a delay, a priority or a packet loss rate.
如权利要求6所述的方法，其特征在于，所述第一消息中包括第一传输方式的指示信息，或第二传输方式的指示信息，所述第二接入网设备根据所述第一消息，确定所述下行数据的传输方式，包括：The method according to claim 6, wherein the first message includes indication information of a first transmission mode or indication information of a second transmission mode, and the second access network device according to the first transmission mode message to determine the transmission mode of the downlink data, including:

所述第一消息中包括所述第一传输方式的指示信息，所述第二接入网设备确定所述下行数据的传输方式为所述第一传输方式；或者，The first message includes indication information of the first transmission mode, and the second access network device determines that the transmission mode of the downlink data is the first transmission mode; or,

所述第一消息中携带有第二传输方式的指示信息，所述第二接入网设备确定所述下行数据的传输方式为所述第二传输方式。The first message carries the indication information of the second transmission mode, and the second access network device determines that the transmission mode of the downlink data is the second transmission mode.
如权利要求6至10中任一项所述的方法，其特征在于，所述第二接入网设备采用所述确定的传输方式，向终端设备发送所述下行数据，包括：The method according to any one of claims 6 to 10, wherein the second access network device uses the determined transmission mode to send the downlink data to the terminal device, comprising:

确定采用所述第一传输方式向终端设备发送所述下行数据，所述第二接入网设备向所述终端设备发送RRC恢复消息，所述RRC恢复消息用于指示所述终端设备进入RRC连接态；It is determined that the first transmission mode is used to send the downlink data to the terminal device, and the second access network device sends an RRC recovery message to the terminal device, where the RRC recovery message is used to instruct the terminal device to enter the RRC connection state;

所述第二接入网设备向所述终端设备发送所述下行数据。The second access network device sends the downlink data to the terminal device.
如权利要求6至10中任一项所述的方法，其特征在于，所述第二接入网设备采用所述确定的传输方式，向终端设备发送所述下行数据，包括：The method according to any one of claims 6 to 10, wherein the second access network device uses the determined transmission mode to send the downlink data to the terminal device, comprising:

确定采用所述第二传输方式向终端设备发送所述下行数据，所述第二接入网设备向所述终端设备发送RRC释放消息，所述RRC释放消息用于通知所述终端设备停留在RRC去活动态，所述RRC释放消息中包括所述下行数据。It is determined that the second transmission mode is used to send the downlink data to the terminal device, and the second access network device sends an RRC release message to the terminal device, where the RRC release message is used to notify the terminal device to stay in the RRC In the deactivated state, the RRC release message includes the downlink data.
一种通信方法，其特征在于，包括：A communication method, comprising:

第一接入网设备接收来自核心网网元的下行数据；the first access network device receives downlink data from the core network element;

所述第一接入网设备根据所述下行数据的信息，确定下行数据的传输方式，所述下行数据的传输方式包括在无线资源控制RRC连接态下，向终端设备发送所述下行数据的第一传输方式，或在RRC去活动态下，向所述终端设备发送所述下行数据的第二传输方式；The first access network device determines the transmission mode of the downlink data according to the information of the downlink data. a transmission mode, or a second transmission mode for sending the downlink data to the terminal device in the RRC deactivation state;

所述第一接入网设备采用所确定的传输方式，向终端设备发送所述下行数据。The first access network device uses the determined transmission mode to send the downlink data to the terminal device.
如权利要求13所述的方法，其特征在于，所述下行数据的信息包括以下参数中的一项或多项：所述下行数据的数据量，所述下行数据的协议数据单元PDU会话信息，所述下行数据的服务质量流信息。The method according to claim 13, wherein the information of the downlink data includes one or more of the following parameters: the data volume of the downlink data, the protocol data unit PDU session information of the downlink data, QoS flow information of the downlink data.
如权利要求14所述的方法，其特征在于，所述下行数据的信息中包括所述下行数据的数据量，所述第一接入网设备根据所述下行数据的信息，确定所述下行数据的传输方式，包括：The method of claim 14, wherein the information of the downlink data includes a data amount of the downlink data, and the first access network device determines the downlink data according to the information of the downlink data transmission methods, including:

所述下行数据的数据量大于第一阈值，所述第一接入网设备确定所述第一传输方式；或者The data volume of the downlink data is greater than a first threshold, and the first access network device determines the first transmission mode; or

所述下行数据的数据量小于所述第一阈值，所述第一接入网设备确定所述第二传输方式；或者，The data amount of the downlink data is less than the first threshold, and the first access network device determines the second transmission mode; or,

所述下行数据的数据量等于所述第一阈值，所述第一接入网设备确定所述第一传输方式或所述第二传输方式。The data volume of the downlink data is equal to the first threshold, and the first access network device determines the first transmission mode or the second transmission mode.
如权利要求14所述的方法，其特征在于，所述下行数据的服务质量流信息包括服务质量标识QI、时延、优先级或丢包率中的至少一个。The method according to claim 14, wherein the quality of service flow information of the downlink data includes at least one of a quality of service identifier (QI), a delay, a priority, or a packet loss rate.
如权利要求13至16中任一项所述的方法，其特征在于，所述第一接入网设备采用所确定的传输方式，向终端设备发送所述下行数据，包括：The method according to any one of claims 13 to 16, wherein the first access network device uses the determined transmission mode to send the downlink data to the terminal device, comprising:

确定采用所述第一传输方式向所述终端设备发送所述下行数据，所述第一接入网设备向所述终端设备发送RRC恢复消息，所述RRC恢复消息用于指示所述终端设备进入RRC连接态；It is determined that the first transmission mode is used to send the downlink data to the terminal device, and the first access network device sends an RRC recovery message to the terminal device, where the RRC recovery message is used to instruct the terminal device to enter RRC connection state;

所述第一接入网设备向所述终端设备发送所述下行数据。The first access network device sends the downlink data to the terminal device.
如权利要求13至16中任一项所述的方法，其特征在于，所述第一接入网设备采用所确定的传输方式，向终端设备发送所述下行数据，包括：The method according to any one of claims 13 to 16, wherein the first access network device uses the determined transmission mode to send the downlink data to the terminal device, comprising:

确定采用所述第二传输方式向所述终端设备发送所述下行数据，所述第一接入网设备向所述终端设备发送RRC释放消息，所述RRC释放消息用于通知所述终端设备停留在RRC去活动态，所述RRC释放消息中携带有所述下行数据。It is determined that the second transmission mode is used to send the downlink data to the terminal device, and the first access network device sends an RRC release message to the terminal device, where the RRC release message is used to notify the terminal device to stay In the RRC deactivation state, the RRC release message carries the downlink data.
一种装置，其特征在于，包括用于执行权利要求1至5任一项所述的方法的各步骤的单元，或者包括用于执行权利要求6至12任一项所述的方法的各步骤的单元，或者，包括用于执行权利要求13至18任一项所述的方法的各步骤的单元。A device, characterized in that it comprises a unit for performing the steps of the method according to any one of claims 1 to 5, or comprises each step for performing the method according to any one of claims 6 to 12 , or, including a unit for performing the steps of the method of any one of claims 13 to 18.
一种装置，其特征在于，包括至少一个处理器和接口电路，所述至少一个处理器用于通过所述接口电路与其它装置通信，并执行权利要求1至5任一项所述的方法，或者，执行权利要求6至12任一项所述的方法，或者，执行权利要求13至18任一项所述的方法。An apparatus, characterized by comprising at least one processor and an interface circuit, wherein the at least one processor is configured to communicate with other apparatuses through the interface circuit, and execute the method of any one of claims 1 to 5, or , execute the method of any one of claims 6 to 12, or, execute the method of any one of claims 13 to 18.
一种装置，其特征在于，包括处理器，用于调用存储器中存储的程序，以执行如权利要求1至5任一项所述的方法，或者，执行如权利要求6至12任一项所述的方法，或者，执行如权利要求13至18任一项所述的方法。A device, characterized in that it comprises a processor for invoking a program stored in a memory to execute the method as claimed in any one of claims 1 to 5, or to execute the method as claimed in any one of claims 6 to 12 The method described in any one of claims 13 to 18 is performed.
一种计算机可读存储介质，其特征在于，包括程序，当所述程序被处理器运行时，如权利要求1至5中任一项所述的方法被执行，或者，如权利要求6至12中任一项所述的方法被执行，或者，如权利要求13至18中任一项所述的方法被执行。A computer-readable storage medium, characterized by comprising a program, when the program is executed by a processor, the method according to any one of claims 1 to 5 is executed, or, as claimed in claims 6 to 12 The method of any one of claims 13 to 18 is performed.