Synchronizing active window boundaries used for data transmission between pairs of nodes of a wireless network
First Claim
1. A method performed in a first node, said method comprising:
- receiving a first packet from a second node on a wireless network, said first packet including a first offset indicating a first position of said first packet in an active window of said second node;
determining a second offset representing a second position at which said first packet is received in an active window of said first node;
determining a difference between said second offset and said first offset;
adjusting a start position of next active window of said first node based on said determined difference to synchronize future active windows at said first node to respective active windows at said second node;
determining a number of levels in a hierarchy of nodes that the first node is away from a border node of said wireless network; and
reducing a default active window duration by an amount proportionate to said number of levels to form said active window of said first node.
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Accused Products
Abstract
An aspect of the present disclosure enables each receiver node of a wireless network to synchronize active widows with those of the sender node. In an embodiment, a receiver node receives a packet from a sender node on a wireless network, with the packet including data indicating a position of the packet in an active window of the sender node. The receiver node determines the position at which the packet is received in an active window of the receiver node. The receiver node determines a difference between the two positions and adjusts a start position of the next active window (of the receiver node) based on the determined difference to synchronize the future active windows at the receiver node to respective active windows at the sender node.
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Citations
17 Claims
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1. A method performed in a first node, said method comprising:
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receiving a first packet from a second node on a wireless network, said first packet including a first offset indicating a first position of said first packet in an active window of said second node; determining a second offset representing a second position at which said first packet is received in an active window of said first node; determining a difference between said second offset and said first offset; adjusting a start position of next active window of said first node based on said determined difference to synchronize future active windows at said first node to respective active windows at said second node; determining a number of levels in a hierarchy of nodes that the first node is away from a border node of said wireless network; and reducing a default active window duration by an amount proportionate to said number of levels to form said active window of said first node. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A non-transitory machine readable medium storing one or more sequences of instructions for enabling a first node of a wireless network to forward packets, said wireless network containing a set of access points and a set of router nodes, said set of access points and said set of router nodes being organized in a hierarchy, wherein execution of said one or more instructions by one or more processors contained in said first node enables said first node to perform the actions of:
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receiving a first packet from a second node on a wireless network, said first packet including a first offset indicating a first position of said first packet in an active window of said second node; determining a second offset representing a second position at which said first packet is received in an active window of said first node; determining a difference between said second offset and said first offset; adjusting a start position of next active window of said first node based on said determined difference to synchronize future active windows at said first node to respective active windows at said second node; determine a number of levels in a hierarchy of nodes that the first node is away from a border node of said wireless network; and reduce a default active window duration by an amount proportionate to said number of levels to form said active window of said first node. - View Dependent Claims (9, 10, 11, 12)
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13. A first node of a wireless network, said wireless network containing a set of access points and a set of router nodes, said set of access points and said set of router nodes being organized in a hierarchy, said first node comprising:
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a processing block and a memory, said memory to store instructions which when retrieved and executed by said processing block causes said first node to perform the actions of; receiving a first packet from a second node on a wireless network, said first packet including a first offset indicating a first position of said first packet in an active window of said second node; determining a second offset representing a second position at which said first packet is received in an active window of said first node; determining a difference between said second offset and said first offset; adjusting a start position of next active window of said first node based on said determined difference to synchronize future active windows at said first node to respective active windows at said second node; determining a number of levels in a hierarchy of nodes the first node is away from a border node of said wireless network; and reducing a default active window duration by an amount proportionate to said number of levels to form said active window of said first node. - View Dependent Claims (14, 15, 16, 17)
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Specification