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US 9,432,159 B2Granted
Method, apparatus and computer program for providing sounding reference signals for coordinated multipoint transmissions
AssigneeNokia Solutions and Networks Oy
InventorsRapeepat Ratasuk, Weidong Yang
Life of this patent
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Abstract
A method comprising: sending, from a first access point, a scheduling assignment to a first user equipment at a first time; receiving, at the first access point, a reference signal transmission from the first user equipment at a second time; and sending, from the first access point, a downlink data packet transmission to the first user equipment at a third time.
Claims18
A method comprising:
- sending, from a first access point, a scheduling assignment to a first user equipment at a first time;
- receiving, at the first access point, a reference signal transmission from the first user equipment at a second time;
- estimating, at the first access point at the second time, reference signal resources, over which the reference signal transmission from a second user equipment in a second access point is transmitted,
- wherein the reference signal transmission is associated with the downlink data packet transmission from the second access point at the third time;
- choosing a transmission strategy for use at the third time based at least in part on the estimated reference signal resources;
- and
- sending, from the first access point, a downlink data packet transmission to the first user equipment at a third time.
4 more elements
An apparatus, comprising:
- at least one processor;
- and
- at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to perform at least the following:
- send a scheduling assignment to a first user equipment at a first time;
- receive a first reference signal transmission from the first user equipment at a second time;
- estimate, at the second time, reference signal resources, over which a second reference signal transmission from a second user equipment associated with a second access point is received,
- wherein the second reference signal transmission is associated with a second downlink data packet transmission from a second apparatus at the third time;
- choose a transmission strategy for use at the third time based at least in part on the estimated reference signal resources;
- and
- send a first downlink data packet transmission to the first user equipment at a third time.
7 more elements
Dependencies are inferred from the claim text.