Scheme to prevent HFN un-synchronization for UM RLC in a...

Details Scheme to prevent HFN un-synchronization for UM RLC in a... Scheme to prevent HFN un-synchronization for UM RLC in a...

2007-11-20

2007-11-20

Pham, Chi (Department: 2616)

Multiplex communications

Communication over free space

Combining or distributing information via time channels

C714S748000, C370S392000

Reexamination Certificate

active

10374235

ABSTRACT:
When the system receives a request to switch for using a smaller TBS size, instead of discarding the unacknowledged MAC-hs PDUs, this invention will pick up RLC UM PDUs or RLC AM PDUs or both of them from the unacknowledged MAC-hs PDUs affected by the size change request and reload them into the new PDU. Meantime, this invention will select RLC UM PDUs over RLC AM PDUs to load into the new PDU if the unacknowledged MAC-hs PDU contains both of them. Therefore, this invention reduces the risk of loss of synchronization for UM RLC because the discarding of unacknowledged MAC-hs PDUs according to the prior art.

REFERENCES:
patent: 7054316 (2006-05-01), Cheng et al.
patent: 7130295 (2006-10-01), Kim et al.

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