Method and apparatus for control of enhanced dedicated channel transmissions
First Claim
1. A method, implemented in a wireless transmit/receive unit (WTRU), for controlling enhanced dedicated channel (E-DCH) transmissions, the method comprising:
- receiving a scheduling grant for E-DCH transmission for an upcoming transmission time interval (TTI);
processing the scheduling grant to calculate a serving grant for E-DCH transmission;
identifying a hybrid automatic repeat request (H-ARQ) process for use for the upcoming TTI;
determining whether the identified H-ARQ process for use for the upcoming TTI is an active H-ARQ process, wherein only an active H-ARQ process is used for transmission of scheduled data and a non-active H-ARQ process is not used for transmission of scheduled data;
determining whether scheduled data is available for transmission in the upcoming TTI;
on a condition that scheduled data is available for transmission and the identified H-ARQ process is an active H-ARQ process and is available for the transmission of the scheduled data in the upcoming TTI;
calculating a remaining power available for the upcoming TTI based on a maximum allowed power for the WTRU;
performing E-DCH transport format combination (E-TFC) restriction based on the remaining power;
selecting an E-TFC from a set of E-TFCs remaining after E-TFC restriction, wherein the E-TFC selection is based on the serving grant value;
generating a protocol data unit (PDU) for transmission over an E-DCH in accordance with the selected E-TFC; and
transmitting the PDU in accordance with the identified H-ARQ process.
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Abstract
A method and apparatus for controlling enhanced dedicated channel (E-DCH) transmissions are disclosed. An enhanced uplink medium access control (MAC-e/es) entity processes a received scheduling grant to calculate a serving grant. The MAC-e/es entity determines whether both a hybrid automatic repeat request (H-ARQ) process for scheduled data and scheduled data are available. If an H-ARQ process for scheduled data and scheduled data are available, the MAC-e/es entity determines whether a serving grant exists. The MAC-e/es entity calculates a remaining power based on maximum allowed power and restricts an E-DCH transport format combination (E-TFC) based on the remaining power. The MAC-e/es entity selects an E-TFC using the serving grant and generates a MAC-e protocol data unit. The MAC-e/es entity may process the received scheduled grant is at each transmission time interval or may store the received scheduled grant in a grant list until there is E-DCH data to transmit.
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Citations
37 Claims
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1. A method, implemented in a wireless transmit/receive unit (WTRU), for controlling enhanced dedicated channel (E-DCH) transmissions, the method comprising:
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receiving a scheduling grant for E-DCH transmission for an upcoming transmission time interval (TTI); processing the scheduling grant to calculate a serving grant for E-DCH transmission; identifying a hybrid automatic repeat request (H-ARQ) process for use for the upcoming TTI; determining whether the identified H-ARQ process for use for the upcoming TTI is an active H-ARQ process, wherein only an active H-ARQ process is used for transmission of scheduled data and a non-active H-ARQ process is not used for transmission of scheduled data; determining whether scheduled data is available for transmission in the upcoming TTI; on a condition that scheduled data is available for transmission and the identified H-ARQ process is an active H-ARQ process and is available for the transmission of the scheduled data in the upcoming TTI; calculating a remaining power available for the upcoming TTI based on a maximum allowed power for the WTRU; performing E-DCH transport format combination (E-TFC) restriction based on the remaining power; selecting an E-TFC from a set of E-TFCs remaining after E-TFC restriction, wherein the E-TFC selection is based on the serving grant value; generating a protocol data unit (PDU) for transmission over an E-DCH in accordance with the selected E-TFC; and transmitting the PDU in accordance with the identified H-ARQ process. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A wireless transmit/receive unit (WTRU) including an enhanced uplink medium access control (MAC-e) entity for controlling enhanced dedicated channel (E-DCH) transmissions, the WTRU comprising:
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circuitry configured to receive a scheduling grant and process the scheduling grant to calculate a serving grant for E-DCH transmission for an upcoming transmit time interval (TTI); circuitry configured to identify a hybrid automatic repeat request (H-ARQ) process for use for the upcoming TTI; circuitry configured to determine whether the identified H-ARQ process for use for the upcoming TTI is an active H-ARQ process, wherein only an active H-ARQ process is used for transmission of scheduled data and a non-active H-ARQ process is not used for transmission of scheduled data; circuitry configured to determine whether scheduled data is available for transmission in the upcoming TTI; on a condition that scheduled data is available for transmission and the identified H-ARQ process that is an active H-ARQ process and is available for the transmission of the scheduled data in the upcoming TTI; the WTRU further comprising; circuitry configured to calculate a remaining power available for the upcoming TTI based on a maximum allowed power; circuitry configured to perform E-DCH transport format combination (E-TFC) restriction based on the remaining power; circuitry configured to select an E-TFC from a set of E-TFCs remaining after E-TFC restriction, wherein the E-TFC selection is based on the serving grant value; a multiplexing entity configured to generate a MAC-e protocol data unit (PDU) for transmission over an E-DCH in accordance with the selected E-TFC; and circuitry configured to transmit the PDU in accordance with the identified H-ARQ process. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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Specification