Communication processing method and apparatus related to a duplication mode of a radio bearer

1. A communication processing method, comprising:

determining, by a radio access device, whether to activate a duplication mode of a radio bearer, wherein the duplication mode of the radio bearer is configured with a packet data convergence protocol (PDCP) entity in the radio bearer, wherein a first radio link control (RLC) entity corresponds to the PDCP entity and a second RLC entity corresponds to the PDCP entity; and

sending, by the radio access device to a terminal device, a first indication message indicating to activate or deactivate the duplication mode of the radio bearer;

wherein the first indication message comprises a first field and a second field, wherein the first field indicates that the first indication message is a control message for the duplication mode;

wherein a first logical channel corresponding to the first RLC entity is activated and the second field indicates whether a second logical channel corresponding to the second RLC entity is activated, wherein the duplication mode of the radio bearer is activated when based on the second logical channel being activated;

wherein the duplication mode of the radio bearer is configured with multiple RLC entities corresponding to multiple second logical channels, and the multiple second logical channels comprise the second logical channel corresponding to the second RLC entity; and

wherein the second field comprises multiple bits corresponding to the multiple second logical channels, wherein each bit of the multiple bits indicates a corresponding second logical channel via a position of the bit and indicates, via a bit state of the bit, whether the corresponding second logical channel is activated.

2. The method according to claim 1 , wherein the duplication mode is deactivated, the first RLC entity is a primary RLC entity, and the method further comprises:

receiving, by the radio access device on the PDCP entity, data from the first RLC entity and determining not to receive duplicated data of data from the second RLC entity; or

receiving, by the radio access device on the PDCP entity, data from the first RLC entity and receiving non-duplicated data of data from the second RLC entity.

3. The method according to claim 1 , wherein the radio bearer is a data radio bearer (DRB).

4. A communication processing method, comprising:

receiving, by a terminal device from a radio access device, a first indication message indicating to activate or deactivate a duplication mode of a radio bearer, wherein the duplication mode of the radio bearer is configured with a packet data convergence protocol (PDCP) entity in the radio bearer, wherein a first radio link control (RLC) entity corresponds to the PDCP entity and a second RLC entity corresponds to the PDCP entity; and

activating or deactivating, by the terminal device, the duplication mode of the radio bearer based on the first indication message, wherein the first indication message comprises a first field and a second field, wherein the first field indicates that the first indication message is a control message for the duplication modes wherein a first logical channel corresponding to the first RLC entity is activated and the second field indicates whether a second logical channel corresponding to the second RLC entity is activated, and wherein the duplication mode of the radio bearer is activated based on the second logical channel being activated;

wherein the duplication mode of the radio bearer is configured with multiple RLC entities corresponding to multiple second logical channels, and the multiple second logical channels comprise the second logical channel corresponding to the second RLC entity; and

wherein the second field comprises multiple bits corresponding to the multiple second logical channels, wherein each bit of the multiple bits indicates a corresponding second logical channel via a position of the bit and indicates, via a bit state of the bit, whether the corresponding second logical channel is activated.

5. The method according to claim 4 , wherein the duplication mode is deactivated, the first RLC entity is a primary RLC entity, and the method further comprises:

transmitting, by the terminal device, data from the PDCP entity to the first RLC entity and determining not to transmit duplicated data of data from PDCP entity to the second RLC entity; or

transmitting, by the terminal device, data from the PDCP entity to the first RLC entity and transmitting non-duplicated data of data from the PDCP entity to the second RLC entity.

6. The method according to claim 4 , wherein the radio bearer is a data radio bearer (DRB).

7. The method according to claim 4 , where the method further comprises:

in response to a quantity of retransmission times of duplicated data on the second RLC entity reaching a maximum quantity of RLC retransmission times, triggering, by the terminal device, a radio link failure of a radio link without reestablishing the radio link.

8. The method according to claim 4 , wherein the method further comprises:

in response to a quantity of retransmission times of duplicated data on the second RLC entity reaching a maximum quantity of RLC retransmission times, determining, by the terminal device, a radio link failure is not triggered.

9. The method according to claim 4 , wherein the first indication message indicates that the duplication mode is deactivated, and the method further comprises:

discarding, by the terminal device, duplicated data on the second RLC entity.

10. The method according to claim 4 , wherein the first indication message indicates that the duplication mode is deactivated, and the method further comprises:

determining, by the terminal device, duplicated data on the second RLC entity that does not need to be transmitted through an air interface; and

continuing to transmit, by the terminal device, the determined duplicated data on the second RLC entity in response to the determined duplicated data on the second RLC entity has started being transmitted through the air interface.

11. An apparatus, comprising:

a processor; and

a memory storing instructions, wherein the instructions are executed by the processor to cause the apparatus to perform operations of:

determining whether to activate a duplication mode of a radio bearer, wherein the duplication mode of the radio bearer is configured with a packet data convergence protocol (PDCP) entity in the radio bearer, wherein a first radio link control (RLC) entity corresponds to the PDCP entity and a second RLC entity corresponds to the PDCP entity; and

sending to a terminal device, a first indication message indicating to activate or deactivate the duplication mode of the radio bearer, wherein the first indication message comprises a first field and a second field, wherein the first field indicates that the first indication message is a control message for the duplication mode; wherein a first logical channel corresponding to the first RLC entity is activated and the second field indicates whether a second logical channel corresponding to the second RLC entity is activated, and wherein the duplication mode of the radio bearer is activated based on the second logical channel being activated;

wherein the duplication mode of the radio bearer is configured with multiple RLC entities corresponding to multiple second logical channels, and the multiple second logical channels comprise the second logical channel corresponding to the second RLC entity; and

wherein the second field comprises multiple bits corresponding to the multiple second logical channels, wherein each bit of the multiple bits indicates a corresponding second logical channel via a position of the bit and indicates, via a bit state of the bit, whether the corresponding second logical channel is activated.

12. The apparatus according to claim 11 , wherein the duplication mode is deactivated, the first RLC entity is a primary RLC entity, and the operations further comprise:

receiving on the PDCP entity, data from the first RLC entity and determining not to receive duplicated data of data from the second RLC entity; or

receiving on the PDCP entity, data from the first RLC entity and receiving non-duplicated data of data from the second RLC entity.

13. An apparatus, comprising:

a processor; and

a memory storing instructions, wherein the instructions are executed by the processor to cause the apparatus to perform operations of:

receiving from a radio access device, a first indication message indicating to activate or deactivate a duplication mode of a radio bearer, wherein the duplication mode of the radio bearer is configured with a packet data convergence protocol (PDCP) entity in the radio bearer, wherein a first radio link control (RLC) entity corresponds to the PDCP entity and a second RLC entity corresponds to the PDCP entity;

activating or deactivating the duplication mode of the radio bearer based on the first indication message, wherein the first indication message comprises a first field and a second field, wherein the first field indicates that the first indication message is a control message for the duplication mode, wherein a first logical channel corresponding to the first RLC entity is activated and the second field indicates whether a second logical channel corresponding to the second RLC entity is activated, and wherein the duplication mode of the radio bearer is activated based on the second logical channel being activated; and

wherein the duplication of the radio bearer is configured with multiple RLC entities corresponding to multiple second logical channels, and the multiple second logical channels comprise the second logical channel corresponding to the second RLC entity; and

wherein the second field comprises multiple bits corresponding to the multiple second logical channels, wherein each bit of the multiple bits indicates a corresponding second logical channel via a position of the bit and indicates, via a bit state of the bit, whether the corresponding second logical channel is activated.

14. The apparatus according to claim 13 , wherein the duplication mode is deactivated, the first RLC entity is a primary RLC entity, and the operations further comprise:

transmitting data from the PDCP entity to the first RLC entity and determining not to transmit duplicated data of data from PDCP entity to the second RLC entity; or

transmitting data from the PDCP entity to the first RLC entity and transmitting non-duplicated data of data from the PDCP entity to the second RLC entity.

15. The apparatus according to claim 13 , wherein the operations further comprise:

in response to a quantity of retransmission times of duplicated data on the second RLC entity reaching a maximum quantity of RLC retransmission times, triggering a radio link failure of a radio link without reestablishing the radio link.

16. The apparatus according to claim 13 , wherein the operations further comprise:

in response to a quantity of retransmission times of duplicated data on the second RLC entity reaching a maximum quantity of RLC retransmission times, determining a radio link failure is not triggered.

17. The apparatus according to claim 13 , wherein the first indication message indicates that the duplication mode is deactivated, and the operations further comprise:

discarding duplicated data on the second RLC entity.

18. The apparatus according to claim 13 , wherein the first indication message indicates that the duplication mode is deactivated, and the operations further comprise:

determining duplicated data on the second RLC entity that does not need to be transmitted through an air interface; and

continuing to transmit the determined duplicated data on the second RLC entity in response to the determined duplicated data on the second RLC entity has started being transmitted through the air interface.