Method and apparatus for transmitting and receiving...

H - Electricity – 03 – M

Patent

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Details

H03M 13/00 (2006.01) H04B 7/26 (2006.01)

Patent

CA 2336330

A communication device employs a method and apparatus for transmitting and receiving information packets using multiple layers of error detection. A sending communication device constructs an information packet to include user information divided into multiple data blocks, a primary error detection code for each data block, and at least a portion of a secondary protection code. The secondary protection code provides error protection for the entire information packet. The secondary protection code is selected such that it can be incrementally determined by a receiving device as data blocks are received and accepted by the receiving device, regardless of order of reception of the data blocks. Since the secondary protection code is incrementally determined, processor utilization is better regulated and delays associated with sending acknowledgments are minimized.

Dans ce dispositif de communication, on utilise un procédé et un dispositif d'émission et de réception de paquets d'informations mettant en oeuvre plusieurs couches de détection d'erreurs (404-406). Un dispositif de communication émetteur construit un paquet d'informations destiné à contenir des informations utilisateur divisées en plusieurs blocs de données, un premier code de détection d'erreur pour chaque bloc de données, et au moins une portion d'un second code (407) de protection, lequel sert de protection d'erreur pour tout le paquet d'informations. Ce second code de protection est choisi de manière à pouvoir être déterminé de manière incrémentielle, par un dispositif récepteur, lors de la réception des blocs de données et de leur acceptation par le dispositif récepteur, quel que soit l'ordre de réception de ces blocs de données. Etant donné que le second code de protection est déterminé de manière incrémentielle, l'utilisation du processeur est mieux régulée et les retards associés aux accusés de réception sont minimisés.

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