Method and apparatus for reliable multicasting in wireless relay networks
AssigneeNtt Docomo, Inc.
InventorsUlas C. Kozat, Ismail Guvenc
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Abstract
A method and apparatus is disclosed herein for performing multi casting. In one embodiment, the method comprises receiving routing, association, relaying, and/or topology information associated with a plurality of nodes in a multi-hop wireless network, the plurality of nodes communicably coupled in a tree or mesh arrangement via a plurality of broadcast channels; and determining a subset of the plurality of nodes over each broadcast channel on the multi-hop wireless network that is responsible for sending acknowledgment information, in response to receipt or lack of receipt of transmissions, back to senders of transmissions.
Claims22
A method comprising:
- receiving information associated with a plurality of nodes in a multi-hop wireless network, the plurality of nodes communicably coupled in an arrangement via a plurality of broadcast channels;
- and
- determining a subset of the plurality of nodes over each broadcast channel on the multi-hop wireless network that is responsible for sending acknowledgment information, in response to receipt or lack of receipt of transmissions, back to senders of transmissions;
- wherein determining the subset of nodes comprises:
- determining whether a node is serving a predetermined number of end users;
- verifying relative importance of service capacity of the node with respect to a parent node;
- determining whether the node has one or more predetermined channel conditions;
- and
- designating the node as a feedback node based on results of determining whether the node is serving the predetermined number of end users, verifying relative importance of service capacity of the node with respect to the parent node, and determining whether the node has the one or more predetermined channel conditions.
A non-transitory computer readable medium storing a computer program which, when executed by a system, cause the system to perform a method comprising:
- receiving information associated with a plurality of nodes in a multi-hop wireless network, the plurality of nodes communicably coupled in an arrangement via a plurality of broadcast channels;
- and
- determining a subset of the plurality of nodes over each broadcast channel on the multi-hop wireless network that is responsible for sending acknowledgment information, in response to receipt or lack of receipt of transmissions, back to senders of transmissions, wherein determining the subset of nodes comprises:
- determining whether a node is serving a predetermined number of end users;
- verifying relative importance of service capacity of the node with respect to a parent node;
- determining whether the node has one or more predetermined channel conditions;
- and
- designating the node as a feedback node based on results of determining whether the node is serving the predetermined number of end users, verifying relative importance of service capacity of the node with respect to the parent node, and determining whether the node has the one or more predetermined channel conditions.
A device for use with a plurality of nodes in a multi-hop wireless network, the plurality of nodes communicably coupled in a tree arrangement via a plurality of broadcast channels, the node comprising:
- routing layer and access control logic to provide information associated with the plurality of nodes;
- and
- decision logic, responsive to the routing information and a channel quality information, to determine a subset of the plurality of nodes that is responsible for sending acknowledgment information back to an original sender in response to receipt or lack of receipt of transmissions,
- wherein the decision logic determines the subset of nodes by determining whether a node is serving a predetermined number of end users;
- verifying relative importance of service capacity of the node with respect to a parent node;
- determining whether the node has one or more predetermined channel conditions;
- and
- designating the node as a feedback node based on results of determining whether the node is serving the predetermined number of end users, verifying relative importance of service capacity of the node with respect to the parent node, and determining whether the node has the one or more predetermined channel conditions.
Dependencies are inferred from the claim text.