Inter-node interference cancellation
First Claim
1. At least one non-transitory computer readable medium having instructions stored therein for cancelling inter-node interference at a victim node, the instructions when executed on a machine to cause the machine to:
- receive downlink signal information at the victim node from an aggressor node;
estimate a channel impulse response for a channel between the aggressor node and the victim node using the downlink signal information;
estimate an inter-node interference signal for the channel using the downlink signal information and the channel impulse response;
receive, at the victim node, an uplink signal from a wireless device, wherein the downlink signal information is received prior to the reception of the uplink signal; and
subtract the estimated inter-node interference signal from the uplink signal to form an inter-node interference compensated uplink signal to substantially cancel inter-node interference caused by the aggressor node in the uplink signal received from the wireless device,wherein cancellation of the inter-node interference at the victim node enables the victim node to dynamically control a Time Division Duplexing (TDD) configuration based on downlink and uplink traffic asymmetry without inter-node interference from the aggressor node.
2 Assignments
0 Petitions
Accused Products
Abstract
A method for cancelling inter-node interference at a victim node is disclosed, which method may be executed as instructions on a machine, where the instructions are included on at least one computer readable medium. The method can include the victim node receiving downlink signal information from an aggressor node. The victim node can estimate a channel impulse response for a channel between the aggressor node and the victim node using the downlink signal information. The victim node can estimate an inter-node interference signal for the channel using the downlink signal information and the channel impulse response. The victim node can receive an uplink signal from a wireless device, wherein the downlink signal information is received prior to the reception of the uplink signal. The victim node can subtract the estimated inter-node interference signal from the uplink signal to form an inter-node interference compensated uplink signal to substantially cancel the inter-node interference from the aggressor node in the uplink signal.
14 Citations
16 Claims
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1. At least one non-transitory computer readable medium having instructions stored therein for cancelling inter-node interference at a victim node, the instructions when executed on a machine to cause the machine to:
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receive downlink signal information at the victim node from an aggressor node; estimate a channel impulse response for a channel between the aggressor node and the victim node using the downlink signal information; estimate an inter-node interference signal for the channel using the downlink signal information and the channel impulse response; receive, at the victim node, an uplink signal from a wireless device, wherein the downlink signal information is received prior to the reception of the uplink signal; and subtract the estimated inter-node interference signal from the uplink signal to form an inter-node interference compensated uplink signal to substantially cancel inter-node interference caused by the aggressor node in the uplink signal received from the wireless device, wherein cancellation of the inter-node interference at the victim node enables the victim node to dynamically control a Time Division Duplexing (TDD) configuration based on downlink and uplink traffic asymmetry without inter-node interference from the aggressor node. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An inter-node interference cancellation device, comprising one or more processors and memory configured to:
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receive downlink signal information at a node from a neighboring node; estimate a channel impulse response for a channel between the neighboring node and the node using the downlink signal information; estimate an inter-node interference signal for the channel using the downlink signal information and the channel impulse response; and subtract the estimated inter-node interference signal from an uplink signal to form an inter-node interference compensated uplink signal to substantially cancel inter-node interference caused by the neighboring node in the uplink signal, wherein the uplink signal is received from a wireless device before subtracting the estimated inter-node interference signal from the uplink signal, wherein the downlink signal information is received prior to the reception of the uplink signal, wherein cancellation of the inter-node interference at the node enables the node to dynamically control a Time Division Duplexing (TDD) configuration based on downlink and uplink traffic asymmetry without inter-node interference from the neighboring node. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification