H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 1/22 (2006.01) H04L 1/00 (2006.01) H04L 1/08 (2006.01) H04L 1/18 (2006.01) H04L 29/06 (2006.01) H04Q 7/36 (2006.01)
Patent
CA 2313978
A two layered segmentation technique coupled with a two layer error detection technique is used to implement the wired to wireless network interface. A wireless network divides network layer packets from a wired network into radio data link packets, and the information within the radio data link packets is divided into portions that can be placed into time slots. Error detection is performed on each of the time slots and also at the radio data link packet level to determine if there is an error within the radio data link packet. Errors detected in any radio data link packet only requires retransmission of the radio data link packet in which the error was detected, and, advantageously, do not require retransmission of the entire network layer packet as would have been required in a system that mapped directly from network layer packets to time slots. Further advantageously, the system is able to be employed by systems that utilize dynamic constellation mapping schemes which result in different time slots for the same user being mapped with different constellations, and so they have different bit to symbol ratios. This is because such changes in the constellation mapping scheme are handled at the time slot level, and are not seen at the radio data link packet level. The segmentation of the network layer packets into radio link packets is independent of the number and size of the time slots which will carry the radio link packets.
Krishnamoorthy Rajeev
Narayanaswamy Shankar
Rupp Markus
Viswanathan Harish
Kirby Eades Gale Baker
Lucent Technologies Inc.
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