Method for efficient retransmissions in multi-hop control networks
First Claim
1. A method for re-transmitting data from a first network node of a first communication apparatus in a multi-hop wireless network toward a control node of a control apparatus, wherein the first network node is a child node to a corresponding parent node of a second communication apparatus, the method comprising:
- transmitting, by the first communication apparatus, data toward the control apparatus via at least one parent node including the second communication apparatus according to a first transmission schedule determined by the control apparatus; and
re-transmitting, by the first communication apparatus, the data towards the control apparatus via the at least one parent node including the second communication apparatus according to second transmission schedule determined by the control apparatus, when the data previously transmitted by the first communication apparatus is failed to be delivered to the control apparatus.
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Accused Products
Abstract
A method for re-transmitting data from nodes in a multi-hop wireless network to a control node, wherein each node is a child node to a corresponding parent node, each child node configured to communicate with the control node via its intervening parent node. The method comprises the control node determining or initiating determination of a transmission schedule for the nodes and the nodes re-transmitting previously transmitted data towards the control node using the schedule.
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Citations
18 Claims
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1. A method for re-transmitting data from a first network node of a first communication apparatus in a multi-hop wireless network toward a control node of a control apparatus, wherein the first network node is a child node to a corresponding parent node of a second communication apparatus, the method comprising:
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transmitting, by the first communication apparatus, data toward the control apparatus via at least one parent node including the second communication apparatus according to a first transmission schedule determined by the control apparatus; and re-transmitting, by the first communication apparatus, the data towards the control apparatus via the at least one parent node including the second communication apparatus according to second transmission schedule determined by the control apparatus, when the data previously transmitted by the first communication apparatus is failed to be delivered to the control apparatus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for re-transmitting data from a first network node of a first communication apparatus in a multi-hop wireless network toward a control node of a control apparatus, wherein the first network node is a child node to a corresponding parent node of a second communication apparatus, the method being performed by a relay node of a second communication apparatus, the relay node being a network node that is paired with the first network node, the method comprising:
upon receipt of an indication the first network node is required to re-transmit data, transmitting said data from a buffer to a joint parent node of the relay node and the first network node simultaneously with a re-transmission of said data by the first communication apparatus. - View Dependent Claims (10, 11)
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12. A multi-hop wireless network comprising:
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a control node of a control apparatus and a first network node of a first communication apparatus, wherein the first network node is a child node to a corresponding parent node of a second communication apparatus, the first communication apparatus transmits data toward the control node via at least one parent node including the second communication apparatus according to a first transmission schedule determined by the control node; and the first communication apparatus re-transmits the data towards the control apparatus via the at least one parent node including the second communication apparatus according to a second transmission schedule determined by the control apparatus, wherein the data previously transmitted by the first communication apparatus is failed to be delivered to the control apparatus. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification