Abstract
A method and apparatus are described for implementing a reset procedure for radio link control (RLC) using radio resource control (RRC) signaling. A wireless transmit/receive unit (WTRU) receives a request for RLC reset. A processor at the WTRU comprises a RRC entity and a RLC entity. The RRC entity receives the request for a RLC reset in a radio resource control message. The RLC entity reassembles RLC service data units (SDUs) from any protocol data units (PDUs) that are received out of sequence at a receiving side of the RLC entity. The reassembled SDUs are delivered in sequence to a packet data convergence protocol entity (PDCP). At the receiving side of the RLC entity any remaining PDUs that are not able to be reassembled are discarded. At a transmitting side of the RLC entity all SDUs and PDUs stored in transmit buffers are discarded.
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4G | 16/09/2010 | ISLD-201010-010 | INTERDIGITAL INC |
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4G | 22/12/2017 | ISLD-201711-004 | INTERDIGITAL INC |
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4G | 31/12/2019 | ISLD-201912-087 | INTERDIGITAL INC |
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Technologies
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Claim
1. A method implemented by a wireless transmit/receive unit (WTRU), the method comprising:
a radio resource control message (RRC) entity initiating re-establishment of a radio link control (RLC) entity;
the RLC entity reassembling RLC service data units (SDUs) from RLC protocol data units (PDUs) that are received out of sequence at a receiving side of the RLC entity based on the RLC re-establishment;
the RLC entity delivering reassembled RLC SDUs in sequence to a packet data convergence protocol (PDCP) entity based on the RLC re-establishment; and
the RLC entity discarding at the receiving side of the RLC entity any remaining RLC PDUs that are not able to be reassembled based on the RLC re-establishment.
2. The method of claim 1, wherein the RRC entity initiating re-establishment of the radio link control (RLC) entity is based on a received RRC connection reconfiguration message.
3. The method of claim 2, further comprising the RLC entity stopping and resetting one or more timers associated with the RLC entity based on the RLC re-establishment.
4. The method of claim 3, further comprising the RLC entity resetting one or more state variables associated with the RLC entity to initial values based on the RLC re-establishment.
5. The method according to claim 2, further comprising the RRC entity determining whether to initiate re-establishment of the RLC entity based on information included in the received RRC connection reconfiguration message.
6. The method according to claim 2, further comprising the RRC entity sending a RLC reset indication to the RLC entity based on the received RRC connection reconfiguration message.
7. The method according to claim 1, further comprising sending an RLC reset acknowledgment.
8. The method according to claim 1, wherein operating type of the RLC entity is acknowledgment mode.
9. The method according to claim 1, wherein operating type of the RLC entity is un-acknowledgment mode.
10. The method according to claim 1, further comprising the RLC entity discarding one or more transmitting side RLC SDUs and RLC PDUs stored in transmit buffers.
11. A wireless transmit/receive unit (WTRU), comprising:
a processor comprising:
a radio resource control message (RRC) entity configured to initiate re-establishment of a reset a radio link control (RLC) entity;
the RLC entity configured to:
reassemble RLC service data units (SDUs) from RLC protocol data units (PDUs) that are received out of sequence at a receiving side of the RLC entity based on the RLC re-establishment;
deliver reassembled RLC SDUs in sequence to a packet data convergence protocol (PDCP) entity based on the RLC re-establishment; and
discard at the receiving side of the RLC entity any remaining RLC PDUs that are not able to be reassembled based on the RLC re-establishment.
12. The WTRU of claim 11, wherein the RRC entity is configured to initiate re-establishment of the radio link control (RLC) entity is based on a received RRC connection reconfiguration message.
13. The WTRU of claim 12, wherein the RLC entity is configured to stop and reset one or more timers associated with the RLC entity based on the RLC re-establishment.
14. The WTRU of claim 13, wherein the RLC entity is configured to reset one or more state variables associated with the RLC entity to initial values based on the RLC re-establishment.
15. The WTRU of claim 12, wherein the RRC entity is configured to determine whether to initiate re-establishment of the RLC entity based on information included in the received RRC connection reconfiguration message.
16. The WTRU of claim 12, wherein the RRC entity is configured to send a RLC reset indication to the RLC entity based on the received RRC connection reconfiguration message.
17. The WTRU of claim 11, wherein the RRC entity is configured to send an RLC reset acknowledgment.
18. The WTRU of claim 11, wherein operating type of the RLC entity is acknowledgment mode.
19. The WTRU of claim 11, wherein operating type of the RLC entity is un-acknowledgment mode.
20. The WTRU of claim 11, wherein the RRC entity is configured to discard one or more transmitting side RLC SDUs and RLC PDUs stored in transmit buffers.
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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.