Bearer management apparatus and method, and communication system
A terminal is capable dual connectivity with a base station, the terminal including: a processor configured to perform a process that change, release, or deactivate a bearer among Secondary Cell Group, and to trigger transmission of a Packet Data Convergence Protocol (PDCP) status report according to the process; and, a transmitter configured to transmit the PDCP status report.
1. A terminal capable of dual connectivity with a base station, the terminal comprising:
a processor configured to perform a process that changes a type of a bearer from Secondary Cell Group (SCG) bearer to Master Cell Group (MCG) bearer, releases the bearer, or deactivates the bearer, and triggers transmission of a Packet Data Convergence Protocol (PDCP) status report when a PDCP entity reconfiguration is requested and an associated Radio Link Control (RLC) entity is released for a radio bearer according to the process; and
a transmitter configured to transmit the PDCP status report.
2. The terminal according to claim 1 , further comprising
a receiver configured to receive from the base station a control signal that indicates the process, wherein the processor performs the process according to the control signal.
3. The terminal according to claim 2 , wherein, the control signal includes a configuration information for a logical channel identity corresponding to the bearer.
4. The terminal according to claim 2 , wherein, the control signal includes a logicalChannelIdentity in an information element DRB-ToAddMod, and a logical channel identity corresponding to the logicalChannelIdentity is present.
5. The terminal according to claim 2 , wherein, the control signal includes a configuration information for a PDCP entity corresponding to the bearer.
6. The terminal according to claim 2 , wherein, the control signal includes a pdcp-Config in an information element DRB-ToAddMod, and PDCP information corresponding to the pdcp-Config is present.
7. The terminal according to claim 1 , wherein the processor triggers transmission of the PDCP status report according to the bearer type.
8. The terminal according to claim 1 , wherein the processor triggers transmission of the PDCP status report according to the bearer type is changed from a first type to a second type.
9. A base station capable of dual connectivity with a terminal, the base station comprising:
a transmitter configured to transmit to the terminal a control signal that indicates to change a type of a bearer from Secondary Cell Group (SCG) bearer to Master Cell Group (MCG) bearer, release the bearer, or deactivate the bearer; and
a receiver configured to receive from the terminal a Packet Data Convergence Protocol (PDCP) status report that is transmitted by the terminal after the terminal triggers transmission of the PDCP status report when a PDCP entity reconfiguration is requested and an associated Radio Link Control (RLC) entity is released for a radio bearer.
10. The base station according to claim 9 , wherein, the control signal includes a configuration information for a logical channel identity corresponding to the bearer.
11. The base station according to claim 9 , wherein, the control signal includes a logicalChannelIdentity in an information element DRB-ToAddMod, and a logical channel identity corresponding to the logicalChannelIdentity is present.
12. The base station according to claim 9 , wherein, the control signal includes a configuration information for a PDCP entity corresponding to the bearer.
13. The base station according to claim 9 , wherein, the control signal includes a pdcp-Config in an information element DRB-ToAddMod, and PDCP information corresponding to the pdcp-Config is present.
14. A wireless system comprising:
a terminal configured to perform a process that changes a type of a bearer from Secondary Cell Group (SCG) bearer to Master Cell Group (MCG) bearer, releases the bearer, or deactivates the bearer, triggers transmission of a Packet Data Convergence Protocol (PDCP) status report when a PDCP entity reconfiguration is requested and an associated RLC Radio Link Control (RLC) entity is released for a radio bearer according to the process, and transmits the PDCP status report; and
a base station configured to receive from the terminal the PDCP status report.