Communication method and apparatus

A communication method, comprising:

• configuring, by a splitting protocol layer entity of a terminal device, a first sequence number (SN) of a splitting protocol layer in a first splitting protocol layer data packet, and configuring a second SN of the splitting protocol layer in a second splitting protocol layer data packet, wherein the splitting protocol layer is a protocol layer above a service data adaptation protocol (SDAP) layer, the splitting protocol layer is determined based on first configuration information, and the first configuration information further comprises one or more of the following:
• first quality of service (QOS) flow information, first protocol data unit (PDU) session information, and first data radio bearer (DRB) information;
• and
• sending, by the splitting protocol layer entity of the terminal device, the first splitting protocol layer data packet to a first protocol layer entity corresponding to a first access network device;
• and
• sending the second splitting protocol layer data packet to a first protocol layer entity corresponding to a second access network device;
• wherein the first configuration information comprises first splitting indication information and/or a first threshold, the first splitting indication information indicates whether a splitting protocol layer entity supports sending different data packets to the first protocol layer entity corresponding to the first access network device and the first protocol layer entity corresponding to the second access network device, and the first threshold indicates an amount threshold of to-be-sent data;
• and
• wherein sending, by the splitting protocol layer entity of the terminal device, the first splitting protocol layer data packet to the first protocol layer entity corresponding to the first access network device, and sending the second splitting protocol layer data packet to the first protocol layer entity corresponding to the second access network device further comprises:
• when the first splitting indication information has a first value and an amount of data to be sent by the splitting protocol layer entity of the terminal device is greater than or equal to the first threshold,
• sending, by the splitting protocol layer entity of the terminal device, the first splitting protocol layer data packet to the first protocol layer entity corresponding to the first access network device, and
• sending the second splitting protocol layer data packet to the first protocol layer entity corresponding to the second access network device.