Method and apparatus for supporting AMD re-segmentation
AssigneeIntel Corporation
InventorsDiana Pani, Christopher R. Cave, Stephen E. Terry, Paul Marinier
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Abstract
A method and apparatus for acknowledge mode data (AMD) re-segmentation are disclosed. An AMD protocol data unit (PDU) is generated from at least one RLC SDU. The AMD PDU size is within a flexible maximum AMD PDU size. The original AMD PDU is stored in a retransmission buffer, and transmitted. If transmission of the original AMD PDU fails and the original AMD PDU size is larger than an updated maximum AMD PDU size, the original AMD PDU is segmented to segmented AMD PDUs. If transmission of one of the segmented AMD PDUs fails, the original AMD PDU may be re-segmented to smaller size AMD PDUs.
Claims12
A method for transmitting a packet at a radio link control (RLC) layer, the method comprising:
- generating an acknowledge mode data (AMD) protocol data unit (PDU) from at least one RLC service data unit (SDU), the AMD PDU being within a current maximum PDU size;
- storing the AMD PDU in a retransmission buffer;
- transmitting the AMD PDU;
- and
- segmenting and retransmitting the AMD PDU as a plurality of AMD PDU segments in response to a status report that indicates a negative acknowledgement (NACK) signifying an unsuccessful transmission of the AMD PDU and the AMD PDU size is greater than a maximum AMD PDU size allowed for retransmission of the AMD PDU, wherein the plurality of AMD PDU segments include additional header information, wherein header information of the original RLC PDU is included in at least in one of the segmented RLC PDUs and a segmentation field indicating the segmented RLC PDUs is included in the additional header information and the header further comprises a field to indicate a version of RLC SDU segmentation.
An apparatus for transmitting a packet at a radio link control (RLC) layer, the apparatus comprising:
- an RLC entity configured to generate an acknowledge mode data (AMD) protocol data unit (PDU) from at least one RLC SDU, the AMD PDU being within a current maximum PDU size, to store the AMD PDU in a retransmission buffer, to transmit the AMD PDU, and segment and retransmit the AMD PDU as a plurality of AMD PDU segments in response to a status report that indicates a negative acknowledgement (NACK) signifying an unsuccessful transmission of the AMD PDU and the AMD PDU size is greater than a maximum AMD PDU size allowed for retransmission of the AMD PDU, wherein the plurality of AMD PDU segments include additional header information, wherein header information of the original RLC PDU is included in at least in one of the segmented RLC PDUs and a segmentation field indicating the segmented RLC PDUs is included in the additional header information and the header further comprises a field to indicate a version of RLC SDU segmentation.
Dependencies are inferred from the claim text.