Adaptive UL-DL TDD configurations in a heterogeneous network
First Claim
1. A method for adapting uplink-downlink (UL-DL) time-division duplexing (TDD) subframe configurations in a heterogeneous network (HetNet), said method comprising:
- calculating a preferred adaptive UL-DL configuration;
receiving, at a reference enhanced Node B (eNB), node configuration information for at least one neighboring node;
reconfiguring an adaptive UL-DL configuration for at least one of the reference eNB and the at least one neighboring node to correspond with the preferred adaptive UL-DL configuration, the adaptive UL-DL configuration being reconfigured based on the node configuration information and sounding reference signal (SRS) subframe scheduling of the reference eNB and the at least one neighboring node;
sending, from the reference eNB, the adaptive UL-DL reconfiguration to the at least one neighboring node; and
scheduling UL data, DL data, and SRS transmissions at the reference eNB based on the adaptive UL-DL reconfiguration.
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Accused Products
Abstract
Technology for adapting uplink-downlink (UL-DL) time-division duplexing (TDD) subframe configurations in a heterogeneous network (HetNet) is disclosed. One method can include a reference enhanced Node B (eNB) determining a preferred adaptive UL-DL configuration. The eNB can receive node configuration information for at least one neighboring node. The eNB can reconfigure an adaptive UL-DL configuration for at least one of the reference eNB and the at least one neighboring node based on the node configuration information and sounding reference signal (SRS) subframe scheduling of the reference eNB and the at least one neighboring eNB.
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Citations
27 Claims
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1. A method for adapting uplink-downlink (UL-DL) time-division duplexing (TDD) subframe configurations in a heterogeneous network (HetNet), said method comprising:
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calculating a preferred adaptive UL-DL configuration; receiving, at a reference enhanced Node B (eNB), node configuration information for at least one neighboring node; reconfiguring an adaptive UL-DL configuration for at least one of the reference eNB and the at least one neighboring node to correspond with the preferred adaptive UL-DL configuration, the adaptive UL-DL configuration being reconfigured based on the node configuration information and sounding reference signal (SRS) subframe scheduling of the reference eNB and the at least one neighboring node; sending, from the reference eNB, the adaptive UL-DL reconfiguration to the at least one neighboring node; and scheduling UL data, DL data, and SRS transmissions at the reference eNB based on the adaptive UL-DL reconfiguration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. At least one non-transitory computer readable medium storing a plurality of instructions which when executed by one or more processors perform the following:
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calculating a preferred adaptive UL-DL configuration; receiving, at a reference enhanced Node B (eNB), node configuration information for at least one neighboring node; reconfiguring an adaptive UL-DL configuration for at least one of the reference eNB and the at least one neighboring node to correspond with the preferred adaptive UL-DL configuration, the adaptive UL-DL configuration being reconfigured based on the node configuration information and sounding reference signal (SRS) subframe scheduling of the reference eNB and the at least one neighboring node; sending, from the reference eNB, the adaptive UL-DL reconfiguration to the at least one neighboring node; and scheduling UL data, DL data, and SRS transmissions at the reference eNB based on the adaptive UL-DL reconfiguration.
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14. A node device operable to adapt uplink-downlink (UL-DL) time-division duplexing (TDD) subframe configurations in a heterogeneous network (HetNet), the node device comprising:
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a processing module to; calculate a preferred adaptive UL-DL configuration; and reconfigure an adaptive UL-DL configuration for at least one of a plurality of nodes including at least one neighboring node to correspond with the preferred adaptive UL-DL configuration, the adaptive UL-DL configuration being reconfigured based in part on node configuration information for the at least one neighboring node, wherein the plurality of nodes use a common cell identity or distinct cell identities, and reconfiguring the adaptive UL-DL configuration includes changing a flexible subframe (FlexSF) from an uplink (UL) to a downlink (DL), wherein the processing module is comprised of code that is located in one or more digital memory devices to be executed by one or more processors or the processing module is implemented in a first hardware circuit; and a transceiver module to transmit, using an antenna, the adaptive UL-DL configuration to the at least one neighboring node, wherein the transceiver module is comprised of code that is located in the one or more digital memory devices to be executed by the one or more processors or the transceiver module is implemented in a second hardware circuit. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
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23. At least one non-transitory machine readable storage medium which stores a plurality of instructions which when executed by a processor perform the following:
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assigning a plurality of nodes into interference management (IM) clusters when a pathloss of node-to-node channels is above a specified threshold; generating a preferred adaptive uplink-downlink (UL-DL) configuration for each of the IM clusters, wherein at least one preferred adaptive UL-DL configuration includes a flexible subframe (FlexSF) configured to switch between an uplink (UL) subframe and a downlink (DL) subframe; reconfiguring the adaptive UL-DL configuration for each of the IM clusters to provide backward compatibility based on the node configuration information and sounding reference signal (SRS) subframe scheduling; and transmitting the adaptive UL-DL reconfiguration to at least one node in a selected IM cluster via a backhaul link via a wired connection, a wireless connection, or an optical fiber connection. - View Dependent Claims (24, 25, 26, 27)
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Specification