Method and apparatus for terminating transmission of a message in an enhanced random access channel
AssigneeSignal Trust for Wireless Innovation
InventorsBenoit Pelletier, Diana Pani, Rocco DiGirolamo, Christopher R. Cave, Vincent Roy, Paul Marinier, Eldad M. Zeira
Life of this patent
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Abstract
A method and an apparatus is provided for terminating an enhanced random access channel (E-RACH) message in an E-RACH transmission. Triggers for terminating the E-RACH message are provided. The actions upon termination of the E-RACH messages are provided to release enhanced dedicated channel (E-DCH) resources while in cell forward access channel (CELL_FACH) state or transition to cell dedicated channel (CELL_DCH) state.
Claims73
A method performed by a wireless transmit/receive unit (WTRU) to communicate with a base station using an enhanced dedicated channel (E-DCH) resource while in a cell forward access channel (CELL_FACH) state, the method comprising:
- determining if a E-DCH buffer is empty;
- transmitting to the base station scheduling information (SI), wherein the SI includes a total E-DCH buffer status (TEBS) equal to zero when the E-DCH buffer is determined to be empty;
- determining if a hybrid automatic repeat request (HARQ) buffer is empty;
- and
- releasing the E-DCH resource when the transmission of the SI with the TEBS equal to zero has been made and the HARQ buffer is empty.
A wireless transmit/receive unit (WTRU) capable of communicating with a base station using an enhanced dedicated channel (E-DCH) resource while in a cell forward access channel (CELL_FACH) state, the WTRU comprising:
- a E-DCH buffer;
- a transmitter;
- a hybrid automatic repeat request (HARQ) buffer;
- and
- a processor;
- wherein the processor:
- determines if the E-DCH buffer is empty;
- causes the transmitter to transmit to the base station scheduling information (SI), wherein the SI includes a total E-DCH buffer status (TEBS) equal to zero for the E-DCH buffer when the processor has determined that the E-DCH buffer is empty;
- determines if the HARQ buffer is empty;
- and
- releases the E-DCH resource when the transmission of the SI with the TEBS equal to zero has been made and the HARQ buffer is empty.
A wireless transmit/receive unit (WTRU) capable of communicating with a base station using an enhanced dedicated channel (E-DCH) resource, the WTRU comprising:
- a transmitter;
- and
- a processor;
- wherein the processor:
- determines if an E-DCH buffer is empty;
- transmits to the base station scheduling information (SI), wherein the SI includes a total E-DCH buffer status (TEBS) equal to zero for the E-DCH buffer when the processor has determined that the E-DCH buffer is empty;
- determines if a last hybrid automatic repeat request (HARQ) data transmission has been made;
- and
- releases the E-DCH resource when the transmission of the SI with the TEBS equal to zero has been made and the last HARQ data transmission has been made.
A method performed by a wireless transmit/receive unit (WTRU) to communicate with a base station using an enhanced dedicated channel (E-DCH) resource while in a cell forward access channel (CELL_FACH) state, the method comprising:
- determining that a E-DCH buffer is empty;
- transmitting to the base station scheduling information (SI), wherein the SI includes a total E-DCH buffer status (TEBS) equal to zero for the empty E-DCH buffer;
- determining if a last hybrid automatic repeat request (HARQ) buffer is empty;
- and
- releasing the E-DCH resource when the transmission of the SI with the TEBS equal to zero has been made and the last HARQ buffer is empty.
A method performed by a wireless transmit/receive unit (WTRU) to communicate with a base station using an enhanced dedicated channel (E-DCH) resource while in a cell forward access channel (CELL_FACH) state, the method comprising:
- determining that a E-DCH buffer is empty;
- transmitting to the base station scheduling information (SI), wherein the SI includes a total E-DCH buffer status (TEBS) equal to zero for the empty E-DCH buffer;
- and
- releasing the E-DCH resource when the transmission of the SI with the TEBS equal to zero has been made and a hybrid automatic repeat request (HARQ) buffer is empty.
A wireless transmit/receive unit (WTRU) capable of communicating with a base station using an enhanced dedicated channel (E-DCH) resource while in a cell forward access channel (CELL_FACH) state, the WTRU comprising:
- a E-DCH buffer;
- a transmitter;
- a hybrid automatic repeat request (HARQ) buffer;
- and
- a processor;
- wherein the processor:
- determines if the E-DCH buffer is empty;
- causes the transmitter to transmit to the base station scheduling information (SI), wherein the SI includes a total E-DCH buffer status (TEBS) equal to zero for the E-DCH buffer when the processor has determined that the E-DCH buffer is empty;
- and
- releases the E-DCH resource when the transmission of the SI with the TEBS equal to zero has been made and the HARQ buffer is empty.
A wireless transmit/receive unit (WTRU) capable of communicating with a base station using an enhanced dedicated channel (E-DCH) resource, the WTRU comprising:
- a transmitter;
- and
- a processor;
- wherein the processor:
- determines if an E-DCH buffer is empty;
- causes the transmitter to transmit to the base station scheduling information (SI), wherein the SI includes a total E-DCH buffer status (TEBS) equal to zero for the E-DCH buffer when the processor has determined that the E-DCH buffer is empty;
- and
- releases the E-DCH resource when the transmission of the SI with the TEBS equal to zero has been made and a last hybrid automatic repeat request (HARQ) data transmission has been made.
A method performed by a wireless transmit/receive unit (WTRU) to communicate with a base station using an enhanced dedicated channel (E-DCH) resource while in a cell forward access channel (CELL_FACH) state, the method comprising:
- determining that a E-DCH buffer is empty;
- transmitting to the base station scheduling information (SI), wherein the SI includes a total E-DCH buffer status (TEBS) equal to zero for the empty E-DCH buffer;
- and
- releasing the E-DCH resource when the transmission of the SI with the TEBS equal to zero has been made and a last hybrid automatic repeat request (HARQ) buffer is empty.
A method performed by a wireless transmit/receive unit (WTRU) to communicate with a base station using an enhanced dedicated channel (E-DCH) resource while in a cell forward access channel (CELL_FACH) state, the method comprising:
- transmitting to the base station scheduling information (SI) including a total E-DCH buffer status (TEBS) equal to zero;
- and
- releasing the E-DCH resource when the transmission of the SI with the TEBS equal to zero has been made and a hybrid automatic repeat request (HARQ) buffer is empty.
An apparatus capable of communicating with a base station using an enhanced dedicated channel (E-DCH) resource while in a cell forward access channel (CELL_FACH) state, the apparatus comprising:
- an E-DCH buffer;
- a transmitter;
- a hybrid automatic repeat request (HARQ) buffer;
- and
- a processor,
- wherein the processor:
- causes the transmitter to transmit to the base station scheduling information (SI) including a total E-DCH buffer status (TEBS) equal to zero;
- and
- releases the E-DCH resource when the transmission of the SI with the TEBS equal to zero has been made and the HARQ buffer is empty.
A wireless transmit/receive unit (WTRU) capable of communicating with a base station using an enhanced dedicated channel (E-DCH) resource, the WTRU comprising:
- a transmitter;
- and
- a processor,
- wherein the processor:
- causes the transmitter to transmit to the base station scheduling information (SI) including a total E-DCH buffer status (TEBS) equal to zero;
- and
- releases the E-DCH resource when the transmission of the SI with the TEBS equal to zero has been made and a last hybrid automatic repeat request (HARQ) data transmission has been made.
A method performed by a wireless transmit/receiver unit (WTRU) to communicate with a base station using an enhanced dedicated channel (E-DCH) resource while in a cell forward access channel (CELL_FACH) state, the method comprising:
- transmitting to the base station scheduling information (SI) including a total E-DCH buffer status (TEBS) equal to zero;
- and
- releasing the E-DCH resource when the transmission of the SI with the TEBS equal to zero has been made and a last hybrid automatic repeat request (HARQ) buffer is empty.
An apparatus comprising:
- a receiver;
- a transmitter;
- and
- a processor,
- wherein the processor:
- allocates an enhanced uplink (EU) resource and an associated hybrid automatic repeat request (HARQ) process for a wireless transmit receive unit (WTRU) based on a request received from the WTRU by the receiver;
- causes the transmitter-to transmit to the WTRU information regarding the allocated EU resource, and
- releases the allocated EU resource when a scheduling information (SI) is received from the WTRU by the receiver with an E-DCH buffer status (TEBS) equal to zero and a HARQ transmission associated with the HARQ process is completed.
A method performed by a base station to communicate with a wireless transmit/receive unit (WTRU), the method comprising:
- receiving a request from the WTRU;
- allocating an enhanced uplink (EU) resource and an associated hybrid automatic repeat request (HARQ) process for the WTRU based on the received request;
- transmitting information regarding the allocated EU resources to the WTRU;
- and
- releasing the allocated EU resource when a scheduling information (SI) is received from the WTRU with an E-DCH buffer status (TEBS) equal to zero and a HARQ transmission associated with the HARQ process is completed.
Dependencies are inferred from the claim text.