Method for handling radio bearer messages during reset and reestablishment in a wireless system
A method of transmitting downlink data after re-establishment of a universal terrestrial radio access network (UTRAN) acknowledged mode (AM) radio link control (RLC) entity includes receiving a plurality of RLC service data units (SDUs) from a packet data convergence protocol (PDCP) layer of the UTRAN; dividing the received RLC SDUs into RLC protocol data units (PDUs) and transmitting the RLC PDUs to a user equipment (UE); receiving acknowledgments from the UE for received RLC PDUs; receiving a re-establishment request at a transmitting side of the AM RLC entity from upper layers of the UTRAN; discarding all RLC SDUs that have been fully transmitted to the UE before the re-establishment request is received; and discarding all RLC SDUs that have not been fully transmitted to the UE when the re-establishment request is received.
1. A method of transmitting radio bearer messages after re-establishment of an acknowledged mode (AM) radio link control (RLC) entity, the method comprising:
receiving a plurality of radio bearer messages from a radio resource control (RRC) layer;
transmitting the radio bearer messages to a peer RLC entity;
receiving acknowledgments from the peer RLC entity for received radio bearer messages;
receiving a re-establishment request at a transmitting side of the AM RLC entity from upper layers of a RLC layer of the AM RLC entity due to SRNS relocation;
discarding all radio bearer messages that have been fully transmitted before the re-establishment request is received; and
discarding all radio bearer messages that have not been fully transmitted when the re-establishment request is received.
2. The method of claim 1 , wherein the method is a method of transmitting radio bearer messages after re-establishment of a user equipment (UE) AM RLC entity, wherein the RRC layer is a RRC layer of the UE; and
wherein the peer RLC entity is a RLC entity of a universal terrestrial radio access network (UTRAN).
3. The method of claim 1 , wherein the radio bearer messages are from a RRC signaling radio bearer RB 3 .
4. The method of claim 3 , wherein the method is a method of transmitting radio bearer messages after re-establishment of a user equipment (UE) AM RLC entity, wherein the RRC layer is a RRC layer of the UE; and
wherein the peer RLC entity is a RLC entity of a universal terrestrial radio access network (UTRAN).