DATA TRANSMISSION METHOD FOR HSDPA
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Abstract
In the data transmission method of an HSDPA system according to the present invention, a transmitter transmits Data Blocks each composed of one or more data units originated from a same logical channel, and a receiver receives the Data Block through a HS-DSCH and distributes the Data Block to a predetermined reordering buffer. Since each Data Block is composed of the MAC-d PDUs originated from the same logical channel, it is possible to monitor the in-sequence delivery of the data units, resulting in reduction of undesirable queuing delay caused by logical channel multiplexing.
35 Citations
37 Claims
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1-28. -28. (canceled)
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29. A method for transmitting data in a transmitting device, the method comprising:
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receiving a plurality of service data units (SDUs) from an upper layer; combining the plurality of SDUs to generate a medium access control (MAC) protocol data unit (PDU) payload; adding a MAC header to the generated MAC PDU payload to generate a MAC PDU, wherein the MAC header comprises an identifier and a sequence number; wherein the identifier is common to the plurality of SDUs and is used for informing a receiving device of a corresponding reordering buffer of the receiving device in which the MAC PDU is to be stored, wherein a respective reordering buffer of the receiving device is configured per the respective identifier; and transmitting the generated MAC PDU to the receiving device. - View Dependent Claims (30, 31, 32, 33)
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34. An apparatus for transmitting a plurality of service data units (SDUs) to a receiving device in a communication system, the apparatus comprising:
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a receiving unit for receiving a plurality of SDUs from an upper layer; a combining unit for aggregating the plurality of SDUs and combining a MAC header and the aggregated plurality of SDUs, wherein the MAC header comprises an identifier used by the receiving device to map the combined plurality of SDUs to a corresponding reordering buffer; a transmission buffer for storing the combined plurality of MAC SDUs; and a transmitting unit for transmitting the combined plurality of MAC SDUs to the receiving device, wherein the identifier is common to the plurality of MAC SDUs, and a respective reordering buffer is configured per a respective identifier. - View Dependent Claims (35, 36, 37)
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Specification