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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Technologies
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Use Cases
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Claim
1. A network entity for reconfiguring a wireless transmit/receive unit (WTRU), the network entity comprising:
a receiver,
a transmitter,
and a processor configured to:
determine whether to reconfigure the WTRU, which is operating according to a first medium access control (MAC) protocol, to a second MAC protocol; and
upon determination to reconfigure the WTRU from the first MAC protocol to the second MAC protocol, send an instruction to the WTRU via the transmitter so that the WTRU performs a MAC reset,
wherein the first MAC protocol is MAC e/es and the second MAC protocol is an enhanced MAC e/es with an improvement over MAC e/es; and
wherein performing the MAC reset comprises changing the first MAC protocol to the second MAC protocol at the WTRU, flushing all HARQ processes in the WTRU and discarding all segments in a segmentation buffer;
wherein the improvement comprises an ability to communicate flexible size PDUs by utilizing an adaptation layer between MAC e/es and enhanced MAC e/es, wherein a header in PDUs of 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 PDUs.
2. The network entity of claim 1, wherein the processor is further configured to:
upon a determination to reconfigure the WTRU from the first MAC protocol to the second MAC protocol, send a protocol change indicator to the WTRU.
3. The network entity of claim 1, wherein the instruction comprises: a MAC reset indicator.
4. The network entity of claim 3, wherein the MAC reset indicator is sent via radio resource controller (RRC) signaling.
5. The network entity of claim 1, wherein whether to reconfigure the WTRU upon a determination to reconfigure the WTRU from the first MAC protocol to the second MAC protocol is determined based on whether a base station in an active set associated with the WTRU supports the second MAC protocol.
6. The network entity of claim 1, wherein the network entity comprises a radio network controller (RNC).
7. A method of a network entity for reconfiguring a wireless transmit/receive unit (WTRU), the method comprising:
determining whether to reconfigure the WTRU from a first medium access control (MAC) protocol to a second MAC protocol; and
upon a determination to reconfigure the WTRU from the first MAC protocol to the second MAC protocol, instructing the WTRU to perform a MAC reset,
wherein the first MAC protocol is MAC e/es and the second MAC protocol is an enhanced MAC e/es with an improvement over MAC e/es; and
wherein performing the MAC reset comprises changing the first MAC protocol to the second MAC protocol at the WTRU, flushing all HARQ processes in the WTRU and discarding all segments in a segmentation buffer;
wherein the improvement comprises an ability to communicate flexible size PDUs by utilizing an adaptation layer between MAC e/es and enhanced MAC e/es, wherein a header in PDUs of 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 PDUs.
8. The method of claim 7, further comprising:
upon a determination to reconfigure the WTRU from the first MAC protocol to the second MAC protocol, sending a protocol change indicator to the WTRU.
9. The method of claim 7, wherein the instructing comprises:
sending a MAC reset indicator to the WTRU.
10. The method of claim 7, wherein the instructing comprises:
sending a MAC reset indicator via radio resource controller (RRC) signaling.
11. The method of claim 7, wherein whether to reconfigure the WTRU from the first MAC protocol to the second MAC protocol, is determined based on whether a base stations in an active set associated with the WTRU supports the second MAC protocol.
12. The method of claim 7, wherein the method is performed by radio network controller (RNC).
13. The network entity of claim 1, wherein the instruction comprises radio bearer (RB) mapping information.
14. The network entity of claim 1, wherein said second MAC protocol is configured to multiplex reordering protocol data units (PDU's) from different logical channels together and prepend a result with the header of the second MAC protocol, and
wherein said first MAC protocol is not capable of being configured to multiplex reordering protocol data units (PDU's) from different logical channels together and prepend a result with the header of the first MAC protocol.
15. The method of claim 7, wherein the instructing comprises radio bearer (RB) mapping information.
16. The method of claim 7, wherein said second MAC protocol is configured to multiplex reordering protocol data units (PDU's) from different logical channels together and prepend a result with the header of the second MAC protocol, and
wherein said first MAC protocol is not capable of being configured to multiplex reordering protocol data units (PDU's) from different logical channels together and prepend a result with the header of the first MAC protocol.
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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.