Handoff based on uplink and downlink reference signals
AssigneeSprint Spectrum L.P.
InventorsKrishna Sitaram, Daniel Vivanco, Chunmei Liu
Life of this patent
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Abstract
A first access node receives, from a wireless device, a first indicator. This first indicator corresponds to a downlink reference signal power as measured by the wireless device. The first indicator is associated with a second access node. The first access node determines a second indicator. The second indicator corresponds to an uplink reference signal power as measured by the first access node. The second indicator is associated with the wireless device. Based on the first indicator and the second indicator, a handoff of the wireless device from the first access node to a second access node is initiated.
Claims17
A method of operating a communication system, comprising:
- receiving, by a first access node and from a wireless device, a first signal quality indicator of a first downlink reference signal transmitted by a second access node and measured by the wireless device;
- measuring, by the first access node, a second signal quality indicator of a sounding reference signal transmitted by the wireless device and received at the first access node;
- and
- in response to the first signal quality indicator exceeding a first threshold requirement and the second signal quality indicator falling below a second threshold requirement, initiating a handoff of the wireless device from the first access node to the second access node.
A communication system, comprising:
- a first access node configured to receive a first signal quality indicator of a first downlink reference signal transmitted by a second access node and measured at a wireless device, to measure a second signal quality indicator of a sounding reference signal transmitted by the wireless device, and to initiate a handoff of the wireless device if the first signal quality indicator exceeds a first requirement threshold and the second signal quality indicator falls below a second requirement threshold.
A method of operating a communication system, comprising:
- measuring, by a first access node, a first signal quality indicator of a sounding reference signal sent by a wireless device being served by the first access node;
- receiving, by the first access node, a plurality of measurement reports from the wireless device, the measurement reports including a second signal quality indicator and a third signal quality indicator, the second signal quality indicator associated with reference signals sent by the first access node, the third signal quality indicator associated with reference signals sent by a second access node;
- and,
- upon the first signal quality indicator falling below a first requirement threshold, and the third signal quality indicator exceeding the second signal quality indicator, initiating a handoff of the wireless device from the first access node to the second access node.
Dependencies are inferred from the claim text.