Signaling for proximity services and D2D discovery in an LTE network
First Claim
Patent Images
1. An enhanced node B (eNB) comprising hardware processing circuitry configured to:
- transmit signaling to indicate a device-to-device (D2D) discovery zone configuration to proximity service (ProSe) enabled user equipment (UE), the signaling to indicate time and frequency resources and a periodicity of a discovery zone and to indicate operational parameters for the discovery zone,wherein the resources of the D2D discovery zone are allocated for D2D discovery signal transmission by the ProSe-enabled UEs;
receive discovery zone loading metrics, the discovery zone loading metrics based on monitoring of discovery signals within the discovery zone by one or more ProSe-enabled UEs; and
make changes to a resource allocation configuration for D2D activities based on the discovery zone loading metrics,wherein the signaling for the D2D discovery zone configuration indicates one or more occurrences of the discovery zone,wherein the signaling is sent by the eNB either using dedicated radio-resource control (RRC) signaling or sent using common radio-resource control (RRC) signaling via system information blocks (SIBs),wherein the eNB is configured to receive D2D discovery zone configuration information of one or more neighbor eNBs, andwherein the eNB is configured to signal the D2D discovery zone configuration information of the one or more neighbor eNBs to the ProSe enabled UEs via SIB signaling.
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Abstract
Embodiments of an enhanced node B (eNB), user equipment (UE) and methods of signaling for proximity services and device-to-device (D2D) discovery in an LTE network are generally described herein. In some embodiments, the eNB may transmit signaling to indicate D2D discovery zone configuration to proximity service (ProSe) enabled UEs. The signaling may indicate time and frequency resources and a periodicity of a discovery zone and may indicate operational parameters for the discovery zone. The resources of the D2D discovery zone may be allocated for D2D discovery signal transmission by the ProSe-enabled UEs.
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Citations
26 Claims
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1. An enhanced node B (eNB) comprising hardware processing circuitry configured to:
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transmit signaling to indicate a device-to-device (D2D) discovery zone configuration to proximity service (ProSe) enabled user equipment (UE), the signaling to indicate time and frequency resources and a periodicity of a discovery zone and to indicate operational parameters for the discovery zone, wherein the resources of the D2D discovery zone are allocated for D2D discovery signal transmission by the ProSe-enabled UEs; receive discovery zone loading metrics, the discovery zone loading metrics based on monitoring of discovery signals within the discovery zone by one or more ProSe-enabled UEs; and make changes to a resource allocation configuration for D2D activities based on the discovery zone loading metrics, wherein the signaling for the D2D discovery zone configuration indicates one or more occurrences of the discovery zone, wherein the signaling is sent by the eNB either using dedicated radio-resource control (RRC) signaling or sent using common radio-resource control (RRC) signaling via system information blocks (SIBs), wherein the eNB is configured to receive D2D discovery zone configuration information of one or more neighbor eNBs, and wherein the eNB is configured to signal the D2D discovery zone configuration information of the one or more neighbor eNBs to the ProSe enabled UEs via SIB signaling. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An enhanced node B (eNB) comprising hardware processing circuitry and configured to:
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transmit signaling to indicate a device-to-device (D2D) discovery zone configuration to proximity service (ProSe) enabled user equipment (UE), the signaling to indicate at least time and frequency resources and a periodicity of a discovery zone; receive discovery zone loading metrics, the discovery zone loading metrics based on monitoring of discovery signals within the discovery zone by one or more ProSe-enabled UEs; and make changes to a resource allocation configuration for D2D activities based on the discovery zone loading metrics, wherein the signaling for the D2D discovery zone configuration indicates one or more occurrences of the discovery zone, wherein the signaling is sent by the eNB either using dedicated radio-resource control (RRC) signaling or sent using common radio-resource control (RRC) signaling via system information blocks (SIBs), wherein based on the D2D discovery zone configuration information of the one or more neighbor eNBs, the eNB is further configured to engage in an interference reduction technique to reduce intra-cell and inter-cell interference within the discovery zone and inter-cell interference between discovery signal transmissions and uplink cellular transmissions, the technique to include one or more of; cooperative subframe power control for D2D discovery signal transmissions wherein uplink subframe sets are configured with separate power control parameters for interference reduction between the uplink cellular transmissions and the D2D discovery signal transmissions; transmit power level control for the D2D discovery signal transmission; cooperative cell clustering to align discovery zones of the one or more neighbor eNBs; and geometry-based intra-cell discovery zone partitioning. - View Dependent Claims (12, 13, 14, 15)
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16. User Equipment (UE) enabled for proximity services (ProSe), the ProSe-enabled UE comprising hardware processing circuitry and configured to:
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receive device-to-device (D2D) discovery zone configuration signaling from an enhanced node B (eNB) to indicate time and frequency resources and a periodicity of a discovery zone and to indicate one or more discovery zone operational parameters; and transmit D2D discovery signals within the resources to discover one or more other ProSe-enabled UEs; and transmit, to an enhanced nodeB (eNB), discovery zone loading metrics, the discovery zone loading metrics based on monitoring of discovery signals within the discovery zone by one or more ProSe-enabled UEs for making changes, at the eNB, to a resource allocation configuration for D2D activities based on the discovery zone loading metrics, wherein the UE is configured to receive signaling from the eNB indicating D2D discovery zone configuration information of one or more neighbor eNBs, and wherein the UE is further configured to; transmit D2D discovery signals in an indicated D2D discovery zone of the one or neighbor eNBs, and monitor the indicated D2D discovery zone of the one or neighbor eNBs for D2D discovery signals. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. A method performed by an enhanced node B (eNB) for signaling for device-to-device (D2D) discovery operations, the method comprising:
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transmitting signaling to indicate a D2D discovery zone configuration to proximity service (ProSe) enabled user equipment (LE), the signaling to indicate time and frequency resources and a periodicity of a discovery zone and to indicate operational parameters for the discovery zone, wherein the resources of the D2D discovery zone are allocated for D2D discovery signal transmission by the ProSe-enabled UEs, wherein the signaling for the D2D discovery zone configuration indicates one or more occurrences of the discovery zone, and wherein the signaling is sent by the eNB either using dedicated radio-resource control (RRC) signaling or sent using common radio-resource control (RRC) signaling via system information blocks (SIBs); receiving discovery zone loading metrics, the discovery zone loading metrics based on monitoring of discovery signals within the discovery zone by one or more ProSe-enabled UEs; and making changes to a resource allocation configuration for D2D activities based on the discovery zone loading metrics, wherein the signaling for the D2D discovery zone configuration indicates one or more occurrences of the discovery zone, wherein the signaling is sent by the eNB either using dedicated radio-resource control (RRC) signaling or sent using common radio-resource control (RRC) signaling via system information blocks (SIBs), wherein the eNB is configured to receive D2D discovery zone configuration information of one or more neighbor eNBs, and wherein the eNB is configured to signal the D2D discovery zone configuration information of the one or more neighbor eNBs to the ProSe enabled UEs via SIB signaling. - View Dependent Claims (24)
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25. A non-transitory computer-readable storage medium that stores instructions for execution by one or more processors to configure an enhanced node B (eNB) for signaling for device-to-device (D2D) discovery operations, the operations to configure the eNB to:
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transmit signaling to indicate a D2D discovery zone configuration to proximity service (ProSe) enabled user equipment (UE), the signaling to indicate time and frequency resources and a periodicity of a discovery zone and to indicate operational parameters for the discovery zone, wherein the resources of the D2D discovery zone are allocated for D2D discovery signal transmission by the ProSe-enabled UEs, wherein the signaling for the D2D discovery zone configuration indicates one or more occurrences of the discovery zone, and wherein the signaling is sent by the eNB either using dedicated radio-resource control (RRC) signaling or sent using common radio-resource control (RRC) signaling via system information blocks (SIBs); receive discovery zone loading metrics, the discovery zone loading metrics based on monitoring of discovery signals within the discovery zone by one or more ProSe-enabled UEs; and make changes to a resource allocation configuration for D2D activities based on the discovery zone loading metrics, wherein the signaling for the D2D discovery zone configuration indicates one or more occurrences of the discovery zone, wherein the signaling is sent by the eNB either using dedicated radio-resource control (RRC) signaling or sent using common radio-resource control (RRC) signaling via system information blocks (SIBs), wherein the eNB is configured to receive D2D discovery zone configuration information of one or more neighbor eNBs, and wherein the eNB is configured to signal the D2D discovery zone configuration information of the one or more neighbor eNBs to the ProSe enabled UEs via SIB signaling. - View Dependent Claims (26)
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Specification