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A method and apparatus for scheduling transmissions via an enhanced dedicated channel (E-DCH) are disclosed. A scheduled power is calculated for scheduled data flows. A remaining transmit power is calculated for the E-DCH transmission. A rate request message is generated, wherein the scheduled power

A method and apparatus for scheduling transmissions via an enhanced dedicated channel (E-DCH) are disclosed. A scheduled power is calculated for scheduled data flows. A remaining transmit power is calculated for the E-DCH transmission. A rate request message is generated, wherein the scheduled power, remaining transmit power and rate request message are used to select transport format combinations (TFCs) and multiplex data scheduled for the E-DCH transmission. The remaining transmit power is calculated by subtracting from a maximum allowed power the power of a dedicated physical data channel (DPDCH), a dedicated physical control channel (DPCCH), a high speed dedicated physical control channel (HS-DPCCH), an enhanced uplink dedicated physical control channel (E-DPCCH) and a power margin.

대표청구항 ▼

1. A method of scheduling uplink data transmissions via an enhanced dedicated channel (E-DCH), the method comprising: calculating a scheduled power for scheduled data flows by a scheduling grant processing unit; andcalculating a remaining transmit power for the E-DCH transmission by a remaining tran

1. A method of scheduling uplink data transmissions via an enhanced dedicated channel (E-DCH), the method comprising: calculating a scheduled power for scheduled data flows by a scheduling grant processing unit; andcalculating a remaining transmit power for the E-DCH transmission by a remaining transmit power computing unit, wherein the remaining transmit power is calculated by subtracting from a maximum allowed power the power of a dedicated physical data channel (DPDCH), a dedicated physical control channel (DPCCH), a high speed dedicated physical control channel (HS-DPCCH), an enhanced uplink dedicated physical control channel (E-DPCCH) and a power margin. 2. The method of claim 1 further comprising: providing an integrated circuit incorporating the scheduling grant processing unit, the remaining transmit power computing unit and a rate request processing unit; andgenerating a rate request message by the rate request processing unit, wherein the scheduled power, remaining transmit power and rate request message are used to select transport format combinations (TFCs) and multiplex data scheduled for the E-DCH transmission. 3. The method of claim 2 further comprising: providing logic for triggering the rate request message; andproviding logic for constructing the rate request message, wherein the rate request message includes a plurality of rate request bits. 4. The method of claim 2 wherein the rate request message indicates total buffer occupancy for any scheduled dedicated channel medium access channel (MAC) data flows and a power headroom available for E-DCH data transmission. 5. The method of claim 2 wherein the rate request message is triggered when there is no current scheduling grant, and new data is received on logical channels mapped to the E-DCH. 6. The method of claim 2 wherein the rate request message is triggered when new data of a higher priority than last reported is received on a logical channel mapped to the E-DCH. 7. The method of claim 2 wherein the rate request message is triggered when there is no scheduling grant and rate requests are updated and periodically generated. 8. The method of claim 2 wherein an updated rate request message is generated when a serving radio link set (RLS) acknowledgement (ACK) is not received for the previously transmitted rate request message. 9. The method of claim 1 wherein at least one scheduling grant received from at least one radio link set (RLS) is used to calculate the scheduled power. 10. The method of claim 9 wherein the at least one scheduling grant is an absolute grant received from an E-DCH cell with a primary or secondary identifier. 11. The method of claim 9 wherein the at least one scheduling grant is a relative grant received from a serving E-DCH radio link set. 12. The method of claim 9 wherein the at least one scheduling grant is a relative grant received from a non-serving E-DCH radio link set. 13. A wireless transmit/receive unit (WTRU) configured to establish an enhanced dedicated channel (E-DCH) for uplink transmissions and scheduling data transmissions via the E-DCH, the WTRU comprising: a scheduling grant processing unit configured to calculate a scheduled power for scheduled data flows; anda remaining power computing unit configured to calculate a remaining transmit power for E-DCH transmission, wherein the remaining transmit power is calculated by subtracting from a maximum allowed power the power of a dedicated physical data channel (DPDCH), a dedicated physical control channel (DPCCH), a high speed dedicated physical control channel (HS-DPCCH), an enhanced uplink dedicated physical control channel (E-DPCCH) and a power margin. 14. The WTRU of claim 13 further comprising: a rate request processing unit configured to generate a rate request message, wherein the scheduled power, remaining transmit power and rate request message are used to select transport format combinations (TFCs) and multiplex data scheduled for the E-DCH transmission wherein the scheduling grant processing unit, the remaining power computing unit and the rate request processing unit are incorporated into an integrated circuit. 15. The WTRU of claim 14 wherein the rate request processing unit comprises logic for triggering the rate request message and logic for constructing the rate request message, wherein the rate request message includes a plurality of rate request bits. 16. The WTRU of claim 14 wherein the rate request message indicates total buffer occupancy for any scheduled dedicated channel medium access channel (MAC) data flows and a power headroom available for E-DCH data transmission. 17. The WTRU of claim 14 wherein the rate request message is triggered when there is no current scheduling grant, and new data is received on logical channels mapped to the E-DCH. 18. The WTRU of claim 13 wherein at least one scheduling grant received from at least one radio link set (RLS) is used to calculate the scheduled power. 19. The WTRU of claim 18 wherein the at least one scheduling grant is an absolute grant received from an E-DCH cell with a primary or secondary identifier. 20. The WTRU of claim 18 wherein the at least one scheduling grant is a relative grant received from a serving E-DCH radio link set. 21. The WTRU of claim 18 wherein the at least one scheduling grant is a relative grant received from a non-serving E-DCH radio link set. 22. A wireless transmit/receive unit (WTRU) comprising: an integrated circuit configured to trigger scheduling information;the integrated circuit configured to determine a serving grant;the integrated circuit configured to determine a remaining transmit power;the integrated circuit configured to select a size of a medium access control-e (MAC-e) protocol data unit (PDU) based on the serving grant, the triggered scheduling information and the remaining transmit power; anda transmitter operatively coupled to the integrated circuit, the transmitter configured to transmit the MAC-e PDU. 23. The WTRU of claim 22 wherein the remaining transmit power is derived based on a selected transport format combination for a dedicated channel. 24. The WTRU of claim 22 wherein the remaining transmit power is derived based on subtracting a dedicated physical data channel estimated power, a dedicated physical control channel estimated power and an enhanced uplink dedicated physical control channel uplink power from a maximum allowed power. 25. The WTRU of claim 24 wherein the remaining transmit power is further derived by subtracting a high speed downlink physical control channel estimated power from the maximum allowed power. 26. The WTRU of claim 24 wherein the remaining transmit power is further derived by subtracting a margin from the maximum allowed power. 27. The WTRU of claim 22 wherein the scheduling information includes a total buffer occupancy for scheduled MAC-d flows and a buffer occupancy for a highest priority MAC-d flow. 28. The WTRU of claim 22 wherein the integrated circuit is further configured to trigger scheduling information based on periodic triggering configured by radio resource control procedure. 29. A wireless transmit/receive unit (WTRU) comprising: an integrated circuit configured to trigger scheduling information based on a condition that higher priority data is received and a current scheduling grant is zero;the integrated circuit configured to determine a serving grant;the integrated circuit configured to select a size of a medium access control-e (MAC-e) protocol data unit (PDU) based on the serving grant and the triggered scheduling information; anda transmitter operatively coupled to the integrated circuit, the transmitter configured to transmit the MAC-e PDU. 30. A method comprising: triggering scheduling information, by a wireless transmit/receive unit (WTRU);determining, by the WTRU, a serving grant;determining, by the WTRU, a remaining transmit power;selecting a size of a medium access control-e (MAC-e) protocol data unit (PDU), by the WTRU, based on the serving grant, the triggered scheduling information and the remaining transmit power; andtransmitting, by the WTRU, the MAC-e PDU. 31. The method of claim 30 wherein the remaining transmit power is derived based on a selected transport format combination for a dedicated channel. 32. The method of claim 30 wherein the remaining transmit power is derived based on subtracting a dedicated physical data channel estimated power, a dedicated physical control channel estimated power and an enhanced uplink dedicated physical control channel uplink power from a maximum allowed power. 33. The method of claim 32 wherein the remaining transmit power is further derived by subtracting a high speed downlink physical control channel estimated power from the maximum allowed power. 34. The method of claim 32 wherein the remaining transmit power is further derived by subtracting a margin from the maximum allowed power. 35. The method of claim 30 wherein the scheduling information includes a total buffer occupancy for scheduled MAC-d flows and a buffer occupancy for a highest priority MAC-d flow. 36. The method of claim 30 wherein the triggering scheduling information is based on periodic triggering configured by radio resource control procedure. 37. A method comprising: triggering scheduling information, by a wireless transmit/receive unit (WTRU) based on a condition that higher priority data is received and a current scheduling grant is zero;determining, by the WTRU, a serving grant;selecting a size of a medium access control-e (MAC-e) protocol data unit (PDU), by the WTRU, based on the serving grant and the triggered scheduling information; andtransmitting, by the WTRU, the MAC-e PDU. 38. A Node B comprising: a transmitter operatively coupled to an integrated circuit, the transmitter and the integrated circuit configured to transmit absolute grants and relative grants to a wireless transmit/receive unit (WTRU); anda receiver operatively coupled to the integrated circuit, the receiver configured to receive an enhanced uplink transmission from the WTRU including a medium access control-e (MAC-e) protocol data unit (PDU) having a size derived from triggered scheduling information and a scheduling grant; wherein the scheduling grant being derived from at least one of the transmitted absolute grants and at least one of the transmitted relative grants; and wherein the scheduling information was triggered based on a condition that higher priority data is received and a current scheduling grant is zero. 39. The Node B of claim 38 wherein the triggered scheduling information includes a total buffer occupancy for scheduled MAC-d flows and a buffer occupancy for a highest priority MAC-d flow. 40. A method comprising: transmitting, by a Node B, absolute grants and relative grants to a wireless transmit/receive unit (WTRU); andreceiving an enhanced uplink transmission, by the Node B, from the WTRU including a medium access control-e (MAC-e) protocol data unit (PDU) having a size derived from triggered scheduling information and a scheduling grant; wherein the scheduling grant being derived from at least one of the transmitted absolute grants and at least one of the transmitted relative grants; and wherein the scheduling information was triggered based on a condition that higher priority data is received and a current scheduling grant is zero. 41. The method of claim 40 wherein the triggered scheduling information includes a total buffer occupancy for scheduled MAC-d flows and a buffer occupancy for a highest priority MAC-d flow.