Data transmission method, access network device, terminal, and communications system
AssigneeHuawei Technologies Co., Ltd.
InventorsLifeng Han, Qufang Huang, Mingzeng Dai
Life of this patent
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Abstract
This application provides a data transmission method. In the method, a first access network device and a second access network device establish a data radio bearer (DRB)-based tunnel and a session-based tunnel. The second access network device sends a Packet Data Convergence Protocol (PDCP) layer data packet to the first access network device via the DRB-based tunnel; and the second access network device sends a Service Data Adaptation Protocol (SDAP) layer data packet to the first access network device via the session-based tunnel.
Claims20
A data transmission method, comprising:
- establishing, by a second access network device, a data radio bearer (DRB)-based tunnel and a session-based tunnel with a first access network device;
- sending, by the second access network device, one or more Packet Data Convergence Protocol (PDCP) layer data packets to the first access network device via the DRB-based tunnel;
- and
- sending, by the second access network device, one or more Service Data Adaptation Protocol (SDAP) layer data packets to the first access network device via the session-based tunnel.
A communication apparatus, comprising at least one processor coupled with a non-transitory storage medium storing instructions that, when executed by the at least one processor, cause an access network device to:
- establish a data radio bearer DRB-based tunnel and a session-based tunnel with a first access network device;
- and
- send one or more Packet Data Convergence Protocol (PDCP) layer data packets to the first access network device via the DRB-based tunnel;
- and
- send one or more Service Data Adaptation Protocol (SDAP) layer data packets to the first access network device via the session-based tunnel.
A communication system, comprising a first access network device and a second access network device;
- wherein:
- the first access network device is configured to establish a data radio bearer (DRB)-based tunnel and a protocol data unit (PDU) session-based tunnel with the second access network device;
- the second access network device is configured to forward one or more Packet Data Convergence Protocol (PDCP) layer data packets to the first access network device via the DRB-based tunnel and forward one or more Service Data Adaptation Protocol (SDAP) layer data packets to the first access network device via the session-based tunnel;
- and
- the first access network device is further configured to receive the one or more PDCP layer data packets from the second access network device via the DRB-based tunnel, and receive the one or more SDAP layer data packets from the second access network device via the session-based tunnel.
Dependencies are inferred from the claim text.