Method for enhanced dedicated channel (E-DCH) transmission overlap detection for compressed mode gap slots
AssigneeInterDigital Technology Corporation
InventorsPeter S. Wang, Guodong Zhang, Stephen E. Terry, Kyle Jung-Lin Pan
Life of this patent
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Abstract
A method and apparatus for detecting an overlap of an E-DCH transmission or retransmission in TTIs that overlap with an assigned uplink compressed mode gap is disclosed. More specifically, detecting an overlap of an E-DCH transmission or retransmission in TTIs that overlap with an uplink compressed mode gap assigned by a Node B when a WTRU is configured with a 2 ms TTI is disclosed. After detecting the overlap of the E-DCH transmission or retransmission and the uplink compressed mode gap, the E-DCH transmission or retransmission is paused.
Claims22
A method for detecting an overlap of an enhanced dedicated channel (E-DCH) transmission from a wireless transmit/receive unit (WTRU) and a Node B assigned uplink compressed mode transmission gap, the method comprising:
- obtaining a current system frame number (SFN) and a concerned subframe number (SubFN) for the E-DCH transmission;
- determining whether the SFN for the E-DCH transmission is a compressed frame using an uplink compressed frame gap description map;
- computing a first subframe time slot, Ne-st-first, and a last subframe time slot, Ne-st-last, using the concerned SubFN for the E-DCH transmission;
- determining a compressed gap type of the SFN for the E-DCH transmission using the uplink compressed frame gap description map;
- determining whether the compressed gap type is a single-frame gap or a double-frame gap;
- determining whether there is an overlap of an E-DCH transmission upon a condition that the compressed gap type is a single frame gap;
- determining whether the SFN is a first frame or a second frame in a double frame gap upon a condition that the SFN for the E-DCH transmission is a double frame gap type;
- and
- determining whether there is no E-DCH transmission overlap upon a condition that SFN is the first frame in the double frame gap and the last time slot, Ne-ts-last, in the concerned SubFN is less than a first idle time slot, Nfirst, in the uplink compressed mode transmission gap.
A method for checking the overlap of enhanced dedicated channel (E-DCH) subframes in an E-DCH transmission from a wireless transmit/receive unit (WTRU) and a Node B assigned uplink compressed mode transmission gap, the method comprising:
- obtaining a current system frame number (SFN) and a concerned subframe number (SubFN) for the E-DCH transmission;
- determining whether the SFN for the E-DCH transmission is a compressed frame using an E-DCH subframe overlap description map;
- and
- determining whether there is an overlap of the E-DCH subframe and the uplink compressed mode transmission gap using the E-DCH subframe overlap description map.
A wireless transmit/receive unit (WTRU), the WTRU comprising:
- a receiver configured to receive an uplink compressed mode gap pattern, wherein the uplink compressed mode gap pattern includes at least one uplink compressed transmission gap;
- a transmitter configured to transmit enhanced dedicated channel (E-DCH) transmissions;
- a processor configured to process the received uplink compressed mode gap pattern, generate an uplink compressed frame gap description map, and detect the overlap of an enhanced dedicated channel transmission and an uplink compressed transmission gap;
- and
- a memory configured to store the uplink compressed frame gap description map generated by the processor.
Dependencies are inferred from the claim text.