Method and apparatus for PCDP discard
DCFirst Claim
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1. A method for discarding a packet data convergence protocol (PDCP) packet, the method comprising:
- a PDCP entity starting a timer upon reception of a PDCP service data unit (SDU) from an upper layer;
the PDCP entity sending a corresponding PDCP PDU to a radio link control (RLC) entity;
on condition that the timer expires, the PDCP entity discarding the PDCP SDU; and
the PDCP entity sending an indication of the discard to the RLC entity.
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Abstract
A method and apparatus for discarding a packet data convergence protocol (PDCP) service data unit (SDU) are disclosed. A PDCP layer sets a timer and discards a PDCP SDU upon expiration of the timer. The timer may be set upon receiving the PDCP SDU from an upper layer or upon submitting the PDCP SDU to a lower layer for transmission. The timer and a radio link control (RLC) discard timer may be coordinated. Alternatively, the PDCP layer may discard the PDCP SDU based on a notification from an RLC layer or based on a PDCP status report.
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Citations
31 Claims
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1. A method for discarding a packet data convergence protocol (PDCP) packet, the method comprising:
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a PDCP entity starting a timer upon reception of a PDCP service data unit (SDU) from an upper layer; the PDCP entity sending a corresponding PDCP PDU to a radio link control (RLC) entity; on condition that the timer expires, the PDCP entity discarding the PDCP SDU; and the PDCP entity sending an indication of the discard to the RLC entity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An evolved Node B (eNB) for discarding a packet data convergence protocol (PDCP) packet, the eNB comprising:
a PDCP entity configured to; start a timer upon reception of a PDCP service data unit (SDU) from an upper layer, send a corresponding PDCP PDU to a radio link control (RLC) entity, discard the PDCP SDU on condition that the timer expires, and send an indication of the discard to the RLC entity. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A wireless transmit/receive unit (WTRU) configured to discard a packet data convergence protocol (PDCP) packet, the WTRU comprising:
a PDCP entity configured to; start a timer upon reception of a PDCP service data unit (SDU) from an upper layer, send a corresponding PDCP PDU to a radio link control (RLC) entity, discard the PDCP SDU of the timer expires, and send an indication of the discard to the RLC entity. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31)
Specification