Method of using sub-rate slots in an ultrawide bandwidth system

Details Method of using sub-rate slots in an ultrawide bandwidth system Method of using sub-rate slots in an ultrawide bandwidth system

H - Electricity

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H04B 7/216 (2006.01) H04B 7/212 (2006.01) H04J 3/16 (2006.01) H04L 12/28 (2006.01) H04L 12/42 (2006.01) H04L 12/56 (2006.01) H04Q 11/00 (2006.01)

Patent

CA 2478903

A method is provided to pass information in a wireless network (300). The available channel time in the network is first divided into a plurality of sequential superframes. Some devices (320) may need to transmit during every superframe, but others will only need to transmit during a fraction of the superframes. These devices (320) are assigned sub-rate time slots in the superframes at sub-rates that must be a power of two. In other words, they can only be assigned sub-rate rime slots every second superframe, every fourth superframe, every eighth superframe, etc. This allows the sub-rate time slots to be spread more evenly throughout the plurality of sequential superframes, and minimizes the amount of overlap possible.

L'invention concerne un procédé permettant de passer des informations dans un réseau sans fil (300). Le temps disponible du canal dans le réseau est réparti, dans un premier temps, en une pluralité de supertrames séquentielles. Quelques dispositifs (320) peuvent devoir effectuer une transmission pendant chaque supertrame, en revanche d'autres ne devront effectuer une transmission seulement pendant une fraction des supertrames. On attribue à ces dispositifs (320) des créneaux temporels à débit de sous-trame dans les supertrames à des débits de sous-trame devant être des puissances de deux. Autrement dit, on peut attribuer seulement des créneaux temporels à débit de sous-trame à chaque deuxième, quatrième, huitième etc. supertrame, cela permettant de diffuser les créneaux temporels à débit de sous-trame de manière plus égale dans la pluralité de supertrames séquentielles et de minimiser la quantité de chevauchement éventuels.

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