Path selection in wireless mesh networks
First Claim
1. A method, performed in a originating node in a wireless network comprising several nodes wirelessly connected to each other, for enabling selection of a transmission path from the originating node to a target node, wherein there are at least two possible transmission paths between the originating node and the target node, the method comprising:
- receiving discovery signals from nodes in the at least two possible transmission paths;
estimating, based on the received discovery signals, radio channels for transmission from the originating node to the nodes transmitting the discovery signals;
calculating, for different transmission modes and based on the estimated radio channels, metrics of links from the originating node to the nodes transmitting the discovery signals;
wherein at least one of the transmission modes involves simultaneous transmission from the originating node to at least two of the nodes transmitting the discovery signals; and
transmitting the calculated metrics to an adjacent node.
2 Assignments
0 Petitions
Accused Products
Abstract
The proposed technology relates to path selection in wireless mesh networks. In particular the disclosure relates to methods for selection of one or more transmission paths from an originating node to a target node in a wireless mesh network, wherein there are at least two possible transmission paths between the originating node and the target node. More specifically, the disclosure proposes a method, performed in an originating node in a wireless network comprising several nodes wirelessly connected to each other, for enabling selection of a transmission path from the originating node to a target node, wherein there are at least two possible transmission paths between the originating node and the target node. The method comprises the steps of receiving SI discovery signals from nodes in the at least two possible transmission paths and estimating S2, based on the received discovery signals, radio channels H for transmission from the originating node to the nodes transmitting the discovery signals. The method further comprises calculating S3, for different transmission modes, based on the estimated radio channels, metrics of links from the originating node to the nodes transmitting the discovery signals, wherein at least one of the transmission modes involves simultaneous transmission from the originating node to at least two of the nodes transmitting the discovery signals and transmitting S4 the calculated metrics to an adjacent node. The disclosure also relates to the corresponding apparatuses and computer programs.
-
Citations
21 Claims
-
1. A method, performed in a originating node in a wireless network comprising several nodes wirelessly connected to each other, for enabling selection of a transmission path from the originating node to a target node, wherein there are at least two possible transmission paths between the originating node and the target node, the method comprising:
-
receiving discovery signals from nodes in the at least two possible transmission paths; estimating, based on the received discovery signals, radio channels for transmission from the originating node to the nodes transmitting the discovery signals; calculating, for different transmission modes and based on the estimated radio channels, metrics of links from the originating node to the nodes transmitting the discovery signals;
wherein at least one of the transmission modes involves simultaneous transmission from the originating node to at least two of the nodes transmitting the discovery signals; andtransmitting the calculated metrics to an adjacent node. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A non-transitory computer readable recording medium storing a computer program product for controlling an originating node in a wireless network comprising several nodes wirelessly connected to each other, for enabling selection of a transmission path from the originating node to a target node, wherein there are at least two possible transmission paths between the originating node and the target node, the computer program product comprising software instructions which, when run on processing circuitry of the originating node, causes the originating node to:
-
receive discovery signals from nodes in the at least two possible transmission paths; estimate, based on the received discovery signals, radio channels for transmission from the originating node to the nodes transmitting the discovery signals; calculate, for different transmission modes and based on the estimated radio channels, metrics of links from the originating node to the nodes transmitting the discovery signals;
wherein at least one of the transmission modes involves simultaneous transmission from the originating node to at least two of the nodes transmitting the discovery signals; andtransmit the calculated metrics to an adjacent node.
-
-
12. An originating node in a wireless network comprising several nodes wirelessly connected to each other, wherein the originating node is configured to enable selection of a transmission path from the originating node to a target node, wherein there are at least two possible transmission paths between the originating node and the target node, the originating node comprising:
-
a communication interface configured for wireless communication with other nodes in the wireless network; and processing circuity configured to cause the originating node to; receive discovery signals from nodes in the at least two possible transmission paths; estimate, based on the received discovery signals, radio channels (H) for transmission from the originating node to the nodes transmitting the discovery signals; calculate, for different transmission modes, based on the estimated radio channels, metrics of links from the originating node to the nodes transmitting the discovery signals, wherein at least one of the transmission modes involves simultaneous transmission from the originating node to at least two of the nodes transmitting the discovery signals; and transmit the calculated metrics to an adjacent node. - View Dependent Claims (13)
-
-
14. A method, performed in a target node in a wireless network comprising several nodes wirelessly connected to each other, for selecting a path for transmission from an originating node to the target node, wherein there are at least two possible transmission paths between the originating node and the target node, the method comprising:
-
receiving, from nodes in the at least two possible transmission paths and for different transmission modes, metrics of links in transmission paths from the originating node to the nodes transmitting the metrics, wherein at least one of the transmission modes involves simultaneous transmission from the originating node to at least two of the nodes; estimating radio channels for transmission from the nodes transmitting the metrics to the target node; calculating, based on the estimated radio channel, metrics of links from the nodes transmitting the metrics to the target node; and selecting at least one transmission path to use for transmission from the originating node to the target node, by calculating and comparing accumulated path metrics from the originating node to the target node of the different transmission modes, based on the received and calculated metrics, for the different transmission modes. - View Dependent Claims (15, 16, 17, 18, 19)
-
-
20. A non-transitory computer readable recording medium storing a computer program product for controlling a target node in a wireless network comprising several nodes wirelessly connected to each other, for selecting a path for transmission from an originating node to the target node, wherein there are at least two possible transmission paths between the originating node and the target node, the computer program product comprising software instructions which, when run on processing circuitry of the target node, causes the target node to:
-
receive, from nodes in the at least two possible transmission paths and for different transmission modes, metrics of links in transmission paths from the originating node to the nodes transmitting the metrics, wherein at least one of the transmission modes involves simultaneous transmission from the originating node to at least two of the nodes; estimate radio channels for transmission from the nodes transmitting the metrics to the target node; calculate, based on the estimated radio channel, metrics of links from the nodes transmitting the metrics to the target node; and select at least one transmission path to use for transmission from the originating node to the target node, by calculating and comparing accumulated path metrics from the originating node to the target node of the different transmission modes, based on the received and calculated metrics, for the different transmission modes.
-
-
21. A target node in a wireless network comprising several nodes wirelessly connected to each other, wherein the target node is configured to select a transmission path from an originating node to a target node, wherein there are at least two possible transmission paths between the originating node and the target node, the target node comprising:
-
a communication interface configured for wireless communication with other nodes in the wireless network; and processing circuity configured to cause the target node to; receive, from nodes in the at least two possible transmission paths and for different transmission modes, metrics of links in transmission paths from the originating node to the nodes transmitting the metrics, wherein at least one of the transmission modes involves simultaneous transmission from the originating node to at least two of the nodes; estimate radio channels for transmission from the respective nodes transmitting the metrics to the target node; calculate, based on the estimated radio channels, metrics of links from the nodes transmitting the metrics to the target node; and select at least one transmission path to use for transmission from the originating node to the target node, by calculating and comparing accumulated path metrics from the originating node to the target node of the different transmission modes, based on the received and calculated metrics, for the different transmission modes.
-
Specification