Filtering semi-persistent scheduling false alarms

H - Electricity – 04 – W

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H04W 72/12 (2009.01)

Patent

CA 2717912

A scheduled data communication system of an access node and terminal supports recurring communications of small data amounts such as Voice over IP (VoIP). In order to make error checking more robust in a random access response (RAR), such as for semi-persistent scheduling (SPS) for VoIP, a portion of a grant or assignment payload has a constraint imposed that can be verified as a condition precedent to determining a valid grant or assignment rather than only relying upon a validity check field, such as a cyclic redundancy check (CRC). Thereby, incorrect validation of a grant or assignment is avoided for dynamic scheduling or for semi-persistent scheduling, the latter causing a persistent error.

Un système de communication de données programmées dun nud daccès et dun terminal prend en charge les communications répétées de petites quantités de données comme la voix sur IP (VoIP). Pour que le contrôle derreurs soit plus robuste dans une réponse daccès aléatoire (RAR), comme pour la programmation semi-persistante (SPS) pour VoIP, une partie dune charge utile dallocation ou daffectation a une contrainte imposée qui peut être vérifiée comme une condition préalable à la détermination dune allocation ou affectation valide plutôt que de compter uniquement sur un champ de contrôle de validité, comme un contrôle de redondance cyclique (CRC). Ainsi, la validation incorrecte dune allocation ou dune affectation est évitée pour la programmation dynamique ou pour la programmation semi-persistante, cette dernière entraînant une erreur persistante.

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