Method of detecting and handling an endless rlc retransmission
AssigneeLG Electronics Inc.
InventorsSeung-June YI, Sung-Jun PARK, Young-Dae LEE, Sung-Duck CHUN
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Abstract
Disclosed is a radio (wireless) communication system providing a radio communication service and a terminal, and more particularly, to a method of effectively detecting and handling endless RLC retransmission so as to prevent endless RLC re-transmission occurring between the terminal and a network in an Evolved Universal Mobile Telecommunications System (E-UMTS) that has evolved from a Universal Mobile Telecommunications System (UMTS) or a Long Term Evolution (LTE) system.
Claims7
1-14. (canceled)
A method of retransmitting data unit, performed by an Acknowledged Mode Radio Link Control (AM RLC) entity of a transmitter, in a wireless communication system, the method comprising:
- receiving a discard indication for a Radio Link Control Service Data Unit (RLC SDU) from a Packet Data Convergence Protocol (PDCP) entity;
- discarding the RLC SDU in response to no segment of the RLC SDU being mapped to an Acknowledged Mode Data (AMD) Protocol Data Unit (PDU) or a portion of the AMD PDU;
- setting a state variable that counts a number of retransmission associated with the RLC SDU in response to at least one segment of the RLC SDU being mapped to the AMD PDU or the portion of the AMD PDU;
- and
- delivering an indication to an upper layer of the AM RLC entity in response to the state variable reaching a maximum retransmission value.
An apparatus configure for retransmitting data unit, performed by an Acknowledged Mode Radio Link Control (AM RLC) entity of a transmitter, in a wireless communication system, the apparatus comprising:
- a processor configured to:
- implement an Acknowledged Mode Radio Link Control (AM RLC) entity;
- receive a discard indication for a Radio Link Control Service Data Unit (RLC SDU) from a Packet Data Convergence Protocol (PDCP) entity;
- discard the RLC SDU in response to no segment of the RLC SDU being mapped to an Acknowledged Mode Data (AMD) Protocol Data Unit (PDU) or a portion of the AMD PDU;
- set a state variable that counts a number of retransmission associated with the RLC SDU in response to at least one segment of the RLC SDU being mapped to the AMD PDU or the portion of the AMD PDU;
- and
- deliver an indication to an upper layer of the AM RLC entity in response to the state variable reaching a maximum retransmission value.
Dependencies are inferred from the claim text.