US 10,098,159 B2Granted

Wireless network and method

AssigneeNXP B.V.

InventorPetr Kourzanov

Life of this patent

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Abstract

A network node for a wireless network and corresponding methods for reducing false collisions in a wireless network, a wireless network, a wireless sensor network and a smart building including a wireless sensor network. The network node includes a processor, memory and an antenna. The network node is operable promiscuously to monitor and maintain a record of transmissions and acknowledgements received by the network node. The network node is also operable to send information relating to the record to another node in the network for use by the other node in determining that a further node to which the other node sends transmissions is hidden from the network node. In another aspect the network node is operable to determine from information received from a second other network node, that a first other network node is hidden from the second other network node.

Claims12

Dependent claims

A network node for a wireless network, the network node comprising:

a processor;
memory;
and
an antenna;
wherein the network node is configured to:
promiscuously monitor transmissions and acknowledgements received by the network node;
maintain a record of the transmissions and acknowledgements, the record including a sequence number for a transmission from the network node;
and
send information relating to the record to another node in the network for use by the another node in determining that a further node to which the another node sends transmissions is hidden from the network node, wherein information maintained in the record and sent to the another node includes at least a first transmission sequence number, wherein the at least a first transmission sequence number is separate from a time stamp, which indicates a time at which a transmission was sent, and wherein the at least a first transmission sequence number corresponds to a transmission from the network node;
wherein the information relating to the record is sent as part of a transmission broadcast across the wireless network
wherein the network node is configured to:
send one or more transmissions to a first other network node and receive acknowledgements of said transmissions from said first other network node;
receive, from a second other network node, information relating to said one or more transmissions, wherein the information received from the second other network node includes at least a second transmission sequence number;
and
determine from information received from the first other network node and from the second other network node, including from an acknowledgement received from the first other network node and from said at least a second transmission sequence number received from the second other network node, that the first other network node is hidden from the second other network node, wherein said determining comprises comparing the first transmission sequence number maintained in the record with the second transmission sequence number to determine if the second transmission sequence number corresponds to the first transmission sequence number maintained in the record of the network node and determining that the first other network node is hidden from the second other network node if an acknowledgement is received at the network node from the first other network node for a transmission having the first transmission sequence number and if the network node determines that the second transmission sequence number corresponds to the first transmission sequence number maintained in the record of the network node.

12 more elements

A network node for a wireless network, the network node comprising:

a processor;
memory;
and
an antenna;
wherein the network node is configured to:
send one or more transmissions to a first other network node and receive acknowledgements of said transmissions from said first other network node, wherein a first set of information in the one or more transmissions sent to the first other node includes at least a first transmission sequence number, wherein the first transmission sequence number is separate from a time stamp, which indicates a time at which a transmission was sent;
maintain a record of said one or more transmissions sent to the first other network node, including the first transmission sequence number;
receive, from a second other network node, a second set of information relating to said one or more transmissions, wherein the second set of information received from the second other network node includes at least a second transmission sequence number, wherein the at least a second transmission sequence number is separate from a time stamp, which indicates a time at which a transmission was sent, wherein the second set of information is received as part of a transmission broadcast across the wireless network;
and
determine from information received from the first other network node and from the second other network node, including from an acknowledgement received from the first other network node and from said at least a second transmission sequence number received from the second other network node, that the first other network node is hidden from the second other network node, wherein said determining comprises comparing the first transmission sequence number maintained in the record with the second transmission sequence number to determine if the second transmission sequence number corresponds to the first transmission sequence number maintained in the record of the network node and determining that the first other network node is hidden from the second other network node if an acknowledgement is received at the network node from the first other network node for a transmission having the first transmission sequence number and if the network node determines that the second transmission sequence number corresponds to the first transmission sequence number maintained in the record of the network node.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/702,998Filed 4 May 2015
Priority: EP 14170466.829 May 2014
Published: US 2015/0351129 A13 Dec 2015
Granted: 9 Oct 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

H04W 74/085
With collision treatment: collision avoidance
H04W 8/005
Network data management: discovery of network devices, e.g. terminals
H04W 24/08
Supervisory, monitoring or testing arrangements: testing, supervising or monitoring using real traffic
H04W 24/10
Supervisory, monitoring or testing arrangements: scheduling measurement reports ; Arrangements for measurement reports