Framing for an improved radio link protocol including FEC
First Claim
1. A method, in a transmitter, of framing an upper layer packet Service Data Unit (ULP SDU), comprising:
- adding (1108) a Symbol Auxilliary Field (SAF) (862) to at least one source symbol (858) to indicate the boundaries of the ULP SDU and the length of potential padding needed to symbol align the ULP SDU; and
encapsulating (1116) a portion of the ULP SDU along with at least one RS to form a PAL PDU, where the RS is generated by encoding (1110) at least one of the SSs augmented with the SAF (859).
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Accused Products
Abstract
Framing techniques for an improved radio link protocol used in a wireless communication system, such as EV-DO. In one embodiment scheduling of the generation of repair symbols encoded to be transmitted along with source data is described. In another embodiment acknowledgment messages from a receiver are used to control the trailing edge of the protection window offered by the repair symbols. In another embodiment, non-acknowledgment messages from a receiver are used to control the generation of extra repair symbols. In another embodiment, a length field is used to avoid transmission of padding bytes over the air. In yet another embodiment, a symbol auxiliary field is appended to source symbols to indicate the padding bytes needed for symbol aligning thus avoiding the transmission of padding bytes over the air.
438 Citations
11 Claims
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1. A method, in a transmitter, of framing an upper layer packet Service Data Unit (ULP SDU), comprising:
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adding (1108) a Symbol Auxilliary Field (SAF) (862) to at least one source symbol (858) to indicate the boundaries of the ULP SDU and the length of potential padding needed to symbol align the ULP SDU; and encapsulating (1116) a portion of the ULP SDU along with at least one RS to form a PAL PDU, where the RS is generated by encoding (1110) at least one of the SSs augmented with the SAF (859). - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A transmitter PAL module for delivering a ULP SDU from an upper layer to a lower layer comprising:
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an SAF adder (1225), for indicating the boundaries of the ULP SDU by appending an SAF to each SS that includes at least a portion of the ULP SDU; and an encapsulator (1240), for encapsulating the at least one portion of the ULP SDU along with at least one RS generated from at least one SS augmented with the SAF. - View Dependent Claims (9)
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10. A transporter for delivering a ULP SDU from an upper layer to a lower layer comprising:
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means (1225) for indicating the boundaries of the ULP SDU by appending an SAF to each SS; and means (1240) for encapsulating a portion of a ULP PDU along with at least one RS generated from at least one SS augmented with the SAF.
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11. A computer program product for use with a processor device that frames an upper layer packet Service Data Unit (ULP SDU) for transporting to a lower layer for further processing and transmission over a communication link, the computer program product having instructions to cause the processor device to:
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add a Symbol Auxilliary Field to each source symbol to indicate the boundaries of the ULP SDU and the length of potential padding needed to symbol align the ULP SDU; and encapsulate a portion of the ULP SDU along with at least one RS to form a PAL PDU, where the RS is generated by encoding at least one of the SSs augmented with the SAF.
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Specification