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.
Claims20
An apparatus for Radio Link Control (RLC) re-segmentation, the apparatus comprising:
- a first buffer to store RLC Service Data Units (SDUs) received from an upper layer;
- segmentation/concatenation circuitry to segment/concatenate at least one of the RLC SDUs to generate an RLC Protocol Data Unit (PDU) that fits within a first total RLC PDU size,
- wherein the first total RLC PDU size corresponds to a channel condition specified by a lower layer,
- wherein the segmentation/concatenation circuitry is further to re-segment the RLC PDU to generate a segmented RLC PDU for retransmission if the first total RLC PDU size is larger than a second total RLC PDU size;
- and
- an RLC controller to generate inputs for AMD (Acknowledge Mode Data) PDU headers of the segmented RLC PDU, the inputs comprising:
- a Sequence Number (SN) of the RLC PDU for the AMD PDU header of the segmented RLC PDU;
- a re-segmentation field, a segment start field, and a segment end field to indicate a position of the segmented RLC PDU in the RLC PDU for the AMD PDU header of the segmented RLC PDU;
- and
- wherein the segmented RLC PDU is to be transmitted to the lower layer through a logical channel.
A method for Radio Link Control (RLC) re-segmentation, the method comprising:
- segmenting at least one RLC Service Data Unit (SDU) to generate an RLC Protocol Data Unit (PDU) that fits within a first total RLC PDU size, wherein the first total RLC PDU size reflects a channel condition specified by a lower layer;
- and
- re-segmenting the RLC PDU to generate a segmented RLC PDU for retransmission if the first total RLC PDU size is larger than a second total RLC PDU size.
A non-transitory computer readable medium with executable instructions stored thereon that, when executed, cause a processor to:
- store Radio Link Control (RLC) Service Data Units (SDUs) received from an upper layer;
- segment/concatenate at least one of the SDUs to generate an RLC Protocol Data Unit (PDU) that fits within a first total RLC PDU size, wherein the first total RLC PDU size reflects a channel condition specified by a lower layer;
- re-segment the RLC PDU to generate a segmented RLC PDU for retransmission if the first total RLC PDU size is larger than a second total RLC PDU size;
- generate inputs for AMD (Acknowledge Mode Data) PDU headers of the segmented RLC PDU, the inputs comprising:
- a Sequence Number (SN) of the RLC PDU for the AMD PDU header of the segmented RLC PDU;
- a re-segmentation field, a segment start field, and a segment end field to indicate a position of the segmented RLC PDU in the RLC PDU for the AMD PDU header of the segmented RLC PDU;
- and
- wherein the segmented RLC PDU is to be transmitted to the lower layer through a logical channel.
Dependencies are inferred from the claim text.