Abstract
A method and apparatus for supporting uplink (UL) protocol changes includes reconfiguring a medium access control (MAC) protocol. A hybrid automatic repeat request (HARM) process is flushed and a MAC-e/es reset is performed.
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3G | 13/09/2009 | ISLD-200910-006 | INTERDIGITAL INC | No | Family Member |
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Technologies
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Claim
1. A wireless transmit/receive unit (WTRU) for performing a medium access control (MAC) reset, comprising:
a processor configured to:
process a MAC-e/es reset indicator in response to a MAC protocol change to an enhanced MAC e/es with Uplink (UL) Layer 2 (L2) improvements or from the enhanced MAC e/es; and
in response to processing the MAC-e/es reset indicator, flush a hybrid automatic repeat request (HARQ) process, and discard a segment stored in a segmentation entity when enhanced MAC-e/es is configured;
wherein the UL L2 improvements comprise an ability to communicate RLC PDUs of flexible sizes utilizing an adaptation layer between MAC-e/es and the enhanced MAC-e/es, and wherein a header in the enhanced MAC-e/es comprises a segmentation description field indicating whether a first and last part of the enhanced MAC-e/es are segments or full PDU's and a length indication field indicating a number of bytes of each segment.
2. The WTRU of claim 1, wherein the processor is configured to receive the MAC-e/es reset indicator via radio resource controller (RRC) signaling.
3. The WTRU of claim 1, wherein the MAC-e/es reset indicator included in an RRC reconfiguration message.
4. The WTRU of claim 1, wherein the MAC-e/es reset indicator included in an active set update message.
5. The WTRU of claim 1, wherein the segmentation entity is configured to store MAC packet data unit (PDU) segments.
6. A method for performing a medium access control (MAC) reset, the method comprising:
processing a MAC-e/es reset indicator in response to a MAC protocol change to an enhanced MAC e/es or from the enhanced MAC e/es;
in response to processing the MAC-e/es reset indicator, flushing a hybrid automatic repeat request (HARQ) process; and
discarding a segment, when enhanced MAC-e/es is configured
wherein the enhanced MAC-e/es include UL Layer 2 (L2) improvements which comprise an ability to communicate RLC PDUs of flexible sizes utilizing an adaptation layer between MAC-e/es and the enhanced MAC-e/es, and wherein a header in the enhanced MAC-e/es comprises a segmentation description field indicating whether a first and last part of the enhanced MAC-e/es are segments or full PDU's and a length indication field indicating a number of bytes of each segment.
7. The method of claim 6, further comprising setting a state variable to zero for logical channels mapped to an enhanced dedicated channel (E-DCH).
8. The method of claim 6, further comprising:
notifying a radio link controller (RLC) of a failed RLC packet data unit (PDU);
discarding the failed RLC PDU;
retransmitting the failed RLC PDU; and
discarding the RLC PDU after transmission.
9. The method of claim 6, further comprising notifying the RLC of PDUs present in a HARQ buffer.
10. The method of claim 6, wherein the MAC-e/es reset indicator is received in at least one of an RRC reconfiguration message or an active set update message.
11. A wireless transmit/receive unit (WTRU) supporting uplink (UL) protocol changes, comprising:
a processor configured to:
receive a medium access control (MAC) protocol change indicator indicating a change from MAC-e/es to enhanced MAC-e/es with UL L2 improvements or from enhanced MAC-e/es with UL Layer 2 (L2) improvements to MAC-e/es;
in response to the MAC protocol change indicator, verify a MAC reset indicator is set to true; and
perform a MAC e/es reset; and
wherein the UL L2 improvements comprise an ability to communicate RLC PDUs of flexible sizes utilizing an adaptation layer between MAC-e/es and the enhanced MAC-e/es, and wherein a header in the enhanced MAC-e/es comprises a segmentation description field indicating whether a first and last part of the enhanced MAC-e/es are segments or full PDU's and
a length indication field indicating a number of bytes of each segment.
12. The WTRU of claim 11, wherein the processor is further configured to receive the MAC reset indicator via radio resource controller (RRC) signaling.
13. The WTRU of claim 11, wherein the processor is further configured to set a state variable to zero for logical channels mapped to an enhanced dedicated channel (E-DCH).
14. The WTRU of claim 11, wherein the processor is further configured to discard a segment in a segmentation entity when an enhanced MAC protocol is configured.
15. A method for supporting uplink (UL) protocol changes, comprising:
processing a medium access control (MAC) protocol change from MAC-es/e to enhanced MAC-e/es with UL Layer 2 (L2) improvements or from the enhanced MAC-e/es with UL L2 improvements to MAC-e/es;
verifying a MAC reset indicator is set to true; and
performing a MAC e/es reset;
wherein the UL L2 improvements comprise an ability to communicate RLC PDUs of flexible sizes utilizing an adaptation layer between MAC-e/es and the enhanced MAC-e/es, and wherein a header in the enhanced MAC-e/es comprises a segmentation description field indicating whether a first and last part of the enhanced MAC-e/es are segments or full PDU's and a length indication field indicating a number of bytes of each segment.
16. The method of claim 15, wherein the MAC reset indicator is received via radio resource controller (RRC) signaling.
17. The method of claim 15, further comprising setting a state variable to zero for logical channels mapped to an enhanced dedicated channel (E-DCH).
18. The method of claim 15, further comprising discarding a segment indicating the length of each enhanced MAC-e/es SDU stored in a segmentation entity when an enhanced MAC protocol is configured.
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The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
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Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.