Abstract
Provided in the embodiments of the disclosure are methods for transmitting data, a terminal device and a network device. One method includes: a terminal device receives semi-static configuration information sent by a network device, the semi-static configuration information being used for indicating an initial state of a duplicated-data transmission function of a Packet Data Convergence Protocol (PDCP) entity corresponding to a Radio Bearer (RB), and the initial state including an activated state or a deactivated state; and the terminal device establishes a first RB according to the semi-static configuration information. The methods, the terminal device and the network device provided by the embodiments of the disclosure help to improve the reliability of data transmission.
Technology
Mobility and handover
Product
Use Cases
Wireless communication
Services
Claim
1. A method for transmitting data, comprising:
receiving, by a terminal device, radio resource control (RRC) signaling sent by a network device, the RRC signaling being used for indicating an initial state of a duplicated-data transmission function of at least one Packet Data Convergence Protocol (PDCP) entity corresponding to at least one Radio Bearer (RB), and the initial state comprising an activated state or a deactivated state;
establishing, by the terminal device, a first RB according to the RRC signaling;
receiving, by the terminal device, switch information sent by the network device, the switch information being used for indicating to switch a state of duplicated-data transmission of a PDCP entity corresponding to the first RB; and
sending, by the terminal device, data to the network device according to the switch information;
wherein when the initial state is the activated state, sending, by the terminal device, the data to the network device according to the switch information comprises:
receiving, by the terminal device, indication information, the indication information being used for indicating a first Radio Link Control (RLC) entity; and
sending, by the terminal device, non-duplicated data to the network device via the first RLC entity, wherein the first RLC entity is among at least two RLC entities corresponding to the PDCP entity corresponding to the first RB.
2. The method of claim 1, wherein
the first RB comprises the PDCP entity and multiple RLC entities corresponding to the PDCP entity.
3. The method of claim 1, wherein receiving, by the terminal device, the switch information sent by the network device comprises:
receiving, by the terminal device, the switch information from the network device via a Media Access Control (MAC) Control Element (CE).
4. The method of claim 1, wherein the RB comprises at least one of a Signaling Radio Bearer (SRB) and a Data Radio Bearer (DRB).
5. A method for transmitting data, comprising:
sending, by a network device, radio resource control (RRC) signaling to a terminal device, the RRC signaling being used for indicating an initial state of a duplicated-data transmission function of at least one Packet Data Convergence Protocol (PDCP) entity corresponding to at least one Radio Bearer (RB), and the initial state including an activated state or a deactivated state; and
sending, by the network device, switch information to the terminal device, the switch information being used for indicating to switch a state of duplicated-data transmission of a PDCP entity corresponding to a first RB;
wherein when the initial state is the activated state, the method further comprises:
sending, by the network device, indication information to the terminal device, the indication information being used for indicating a first Radio Link Control (RLC) entity; and
receiving, by the network device, non-duplicated data from the terminal device via the first RLC entity, wherein the first RLC entity is among at least two RLC entities corresponding to the PDCP entity corresponding to the first RB.
6. A terminal device, comprising:
an input interface, configured to receive radio resource control (RRC) signaling sent by a network device, the RRC signaling being used for indicating an initial state of a duplicated-data transmission function of at least one Packet Data Convergence Protocol (PDCP) entity corresponding to at least one Radio Bearer (RB), and the initial state comprising an activated state or a deactivated state; and
a processor, configured to establish a first RB according to the RRC signaling;
the input interface, further configured to receive switch information sent by the network device, the switch information being used for indicating to switch a state of duplicated-data transmission of a PDCP entity corresponding to the first RB;
an output interface, configured to send data to the network device according to the switch information,
wherein when the initial state is the activated state,
the input interface is further configured to receive indication information, the indication information being used for indicating a first Radio Link Control (RLC) entity; and
the output interface is further configured to send non-duplicated data to the network device via the first RLC entity, wherein the first RLC entity is among at least two RLC entities corresponding to the PDCP entity corresponding to the first RB.
7. The terminal device of claim 6, wherein
the first RB comprises the PDCP entity and multiple RLC entities corresponding to the the PDCP entity.
8. The terminal device of claim 6, wherein the input interface is configured to:
receive, via a Media Access Control (MAC) Control Element (CE), the switch information sent by the network device.
9. The terminal device of claim 6, wherein the RB comprises at least one of a Signaling Radio Bearer (SRB) and a Data Radio Bearer (DRB).
10. A network device, comprising:
a processor, configured to determine radio resource control (RRC) signaling, the RRC signaling being used for indicating an initial state of a duplicated-data transmission function of at least one Packet Data Convergence Protocol (PDCP) entity corresponding to at least one Radio Bearer (RB), and the initial state including an activated state or an deactivated state; and
an output interface, configured to send the RRC signaling to a terminal device and send switch information to the terminal device, the switch information being used for indicating to switch a state of duplicated-data transmission of a PDCP entity corresponding to a first RB;
wherein when the initial state is the activated state,
the output interface is further configured to send indication information to the terminal device, the indication information being used for indicating a first Radio Link Control (RLC) entity; and
the processor is further configured to control an input interface to receive non-duplicated data from the terminal device via the first RLC entity, wherein the first RLC entity is among at least two RLC entities corresponding to the PDCP entity corresponding to the first RB.
11. The network device of claim 10, wherein the output interface is configured to:
send the switch information to the terminal device via a Media Access Control (MAC) Control Element (CE).
Associated Portfolios
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