METHOD AND DEVICE USED FOR WIRELESS COMMUNICATION
Method and device for wireless communications. A first node receives a first message, the first message configuring at least first RLC bearer; and receives a second message, the second message indicating that the at least first RLC bearer is/are a candidate of multiple radio bearers; and receives a third message, the third message indicating that the at least first RLC bearer is/are associated with a first radio bearer, the first radio bearer being one of the multiple radio bearers; and transmits a data unit of the first radio bearer via the at least first RLC bearer as a response to receiving the third message; herein, the second message is an RRC layer signaling, while the third message is a signaling of a protocol layer below the RRC layer. This application can ensure a fast reconfiguration of radio bearers and enhance the transmission adaptability.
1 . A first node for wireless communications, characterized in comprising:
a first receiver, which receives a first message, the first message configuring at least first RLC bearer; and receives a second message, the second message indicating that the at least first RLC bearer is/are a candidate of multiple radio bearers; and receives a third message, the third message indicating that the at least first RLC bearer is/are associated with a first radio bearer, the first radio bearer being one of the multiple radio bearers; and
a first processor, which transmits a data unit of the first radio bearer via the at least first RLC bearer as a response to receiving the third message;
wherein the second message is an RRC layer signaling, while the third message is a signaling of a protocol layer below the RRC layer.
2 . The first node according to claim 1 , characterized in comprising:
the first processor, which transmits a fourth message, the fourth message indicating a state of the first radio bearer;
wherein the fourth message is used for triggering the third message.
3 . The first node according to claim 1 , characterized in comprising:
the first receiver, which receives a fifth message, the fifth message configuring a second RLC bearer to be associated with the first radio bearer; and
the first processor, which transmits a data unit of the first radio bearer via the second RLC bearer as a response to receiving the fifth message;
wherein the fifth message is an RRC layer message; reception of the fifth message is earlier than reception of the third message.
4 . The first node according to claim 1 , characterized in that the third message indicates one of a Packet Data Convergence Protocol (PDCP) duplication or a data volume threshold; when the third message indicates the PDCP duplication, the at least first RLC bearer is/are used for PDCP duplication; when the third message indicates the data volume threshold, the at least first RLC bearer is/are used for a splitSecondaryPath.
5 . The first node according to claim 3 , characterized in that the third message is used for deactivating the second RLC bearer.
6 . The first node according to claim 3 , characterized in that an RLC mode used by the at least said RLC bearer is identical to an RLC mode used by the second RLC bearer.
7 . The first node according to claim 3 , characterized in that the at least first RLC bearer and the second RLC bearer belong to a same cell group, or, the at least first RLC bearer and the second RLC bearer belong to different cell groups.
8 . A second node for wireless communications, characterized in comprising:
a first transmitter, which transmits a first message, the first message configuring at least first RLC bearer; and transmits a second message, the second message indicating that the at least first RLC bearer is/are a candidate of multiple radio bearers; and transmits a third message, the third message indicating that the at least first RLC bearer is/are associated with a first radio bearer, the first radio bearer being one of the multiple radio bearers; and
a second processor, which transmits a data unit of the first radio bearer via the at least first RLC bearer after transmitting the third message;
wherein the second message is an RRC layer signaling, while the third message is a signaling of a protocol layer below the RRC layer.
9 . The second node according to claim 8 , characterized in comprising:
the second processor, which receives a fourth message, the fourth message indicating a state of the first radio bearer;
wherein the fourth message is used for triggering the third message.
10 . The second node according to claim 8 , characterized in comprising:
the first transmitter, which transmits a fifth message, the fifth message configuring a second RLC bearer to be associated with the first radio bearer; and
the second processor, which transmits a data unit of the first radio bearer via the second RLC bearer after transmitting the fifth message;
wherein the fifth message is an RRC layer message; transmission of the fifth message is earlier than transmission of the third message.
11 . The second node according to claim 8 , characterized in that the third message indicates one of a PDCP duplication or a data volume threshold; when the third message indicates the PDCP duplication, the at least first RLC bearer is/are used for PDCP duplication; when the third message indicates the data volume threshold, the at least first RLC bearer is/are used for a splitSecondaryPath.
12 . The second node according to claim 10 , characterized in that the third message is used for deactivating the second RLC bearer.
13 . The second node according to claim 10 , characterized in that the at least first RLC bearer and the second RLC bearer belong to a same cell group, or, the at least first RLC bearer and the second RLC bearer belong to different cell groups.
14 . A method in a first node for wireless communications, characterized in comprising:
receiving a first message, the first message configuring at least first RLC bearer; and
receiving a second message, the second message indicating that the at least first RLC bearer is/are a candidate of multiple radio bearers; and
receiving a third message, the third message indicating that the at least first RLC bearer is/are associated with a first radio bearer, the first radio bearer being one of the multiple radio bearers; and
transmitting a data unit of the first radio bearer via the at least first RLC bearer as a response to receiving the third message;
wherein the second message is an RRC layer signaling, while the third message is a signaling of a protocol layer below the RRC layer.
15 . The method in the first node according to claim 14 , characterized in comprising:
transmitting a fourth message, the fourth message indicating a state of the first radio bearer;
wherein the fourth message is used for triggering the third message.
16 . The method in the first node according to claim 14 , characterized in comprising:
receiving a fifth message, the fifth message configuring a second RLC bearer to be associated with the first radio bearer; and
transmitting a data unit of the first radio bearer via the second RLC bearer as a response to receiving the fifth message;
wherein the fifth message is an RRC layer message; reception of the fifth message is earlier than reception of the third message.
17 . The method in the first node according to claim 14 , characterized in that the third message indicates one of a PDCP duplication or a data volume threshold; when the third message indicates the PDCP duplication, the at least first RLC bearer is/are used for PDCP duplication; when the third message indicates the data volume threshold, the at least first RLC bearer is/are used for a splitSecondaryPath.
18 . The method in the first node according to claim 16 , characterized in that the third message is used for deactivating the second RLC bearer.
19 . The method in the first node according to claim 16 , characterized in that an RLC mode used by the at least first RLC bearer is identical to an RLC mode used by the second RLC bearer.
20 . The method in the first node according to claim 16 , characterized in that the at least first RLC bearer and the second RLC bearer belong to a same cell group, or, the at least first RLC bearer and the second RLC bearer belong to different cell groups.