Radio Link Monitoring for Link-Budget-Limited Devices
First Claim
1. An apparatus for facilitating wireless communications of a link-budget limited device, the apparatus comprising:
- a processor configured to cause a device to;
identify the device to a wireless network as being a link-budget limited device, through a protocol established to facilitate identification of link-budget limited devices to the wireless network; and
receive, from the wireless network, resource elements carrying signals and data associated with physical channels of the device, wherein the resource elements are transmitted by the wireless network to the device at boosted power levels in response to the device identifying itself to the network as being a link-budget limited device.
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Abstract
A link-budget-limited wireless communication device (UE) may implement improved radio link monitoring procedures for enhancing the link-budget of the UE. The UE may monitor the radio link and may determine whether the radio link can support a lowest acceptable link quality according to a hysteresis-based comparison that uses threshold values to determine error rates associated with a physical control channel. The UE may also identify itself to the network as a link-budget-limited device, and the network may enable special link-budget enhancing features for the UE, including boosting the power of the resource elements (REs) carrying physical channel signaling/data to the UE. The UE may detect the presence of power boost and may estimate/determine the power boost level. The UE may modify the threshold values based on the power boost detection and/or results of the power boost level estimation/determination, and may use the modified threshold values for determining radio link quality during radio link monitoring.
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Citations
20 Claims
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1. An apparatus for facilitating wireless communications of a link-budget limited device, the apparatus comprising:
a processor configured to cause a device to; identify the device to a wireless network as being a link-budget limited device, through a protocol established to facilitate identification of link-budget limited devices to the wireless network; and receive, from the wireless network, resource elements carrying signals and data associated with physical channels of the device, wherein the resource elements are transmitted by the wireless network to the device at boosted power levels in response to the device identifying itself to the network as being a link-budget limited device. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A device comprising:
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radio circuitry comprising one or more antennas and configured to facilitate wireless communications of the device with a cellular network; and processing circuitry communicatively coupled to the radio circuitry and configured to cause the device to; identify the device to a cellular network as being a link-budget limited device, through a protocol established to facilitate identification of link-budget limited devices to the cellular network; and receive, from the cellular network, resource elements carrying signals and data associated with physical channels of the device, wherein the resource elements are transmitted by the cellular network to the device at boosted power levels in response to the device identifying itself to the network as being a link-budget limited device. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A non-transitory memory element storing instructions executable by a processor to cause a device to:
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identify the device to a wireless network as being a link-budget limited device, through a protocol established to facilitate identification of link-budget limited devices to the wireless network; and receive, from the wireless network, resource elements carrying signals and data associated with physical channels of the device, wherein the resource elements are transmitted by the wireless network to the device at boosted power levels in response to the device identifying itself to the network as being a link-budget limited device. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification