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US 11,083,012 B2Granted
Multi-channel listen-before-talk arrangements for licensed-assisted access in LTE
AssigneeNokia Solutions and Networks Oy
InventorsMichal Cierny, Klaus Hugl, Timo Erkki Lunttila, Cassio Barboza Ribeiro
Life of this patent
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Abstract
There is provided a method comprising determining, at a first access point, whether a carrier from a plurality of carriers is a primary listen-before-talk carrier or a secondary listen-before-talk carrier and providing information using the carrier, said information comprising an indication of whether the respective carrier is a primary listen-before-talk carrier or a secondary listen-before-talk carrier.
Claims18
An apparatus, comprising:
- at least one processor;
- and
- at least one memory including a computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to:
- determine, at a first access point, a type of a carrier from a plurality of carriers, the type of the carrier is a primary listen-before-talk carrier or a secondary listen-before-talk carrier, wherein the primary listen-before-talk carrier differs from the secondary listen-before-talk carrier in that carrier sense multiple access with collision avoidance with exponential back-off is configured to occur only on the primary listen-before-talk carrier but not on the secondary listen-before-talk carrier, and energy detect clear channel assessment is configured to occur on the secondary listen-before-talk carrier after the primary listen-before-talk carrier is detected to be idle;
- provide information using the carrier, said information comprising an indication of the type of the carrier;
- and
- determine whether a type of the respective carrier used by at least one second access point is a primary listen-before-talk carrier or a secondary listen-before-talk carrier for the at least one second access point.
4 more elements
A method, comprising:
- receiving, at a user equipment, information from a first access point using a carrier, said information comprising an indication of a type of the carrier, the type of the carrier is a primary listen-before-talk carrier or a secondary listen-before-talk carrier;
- and
- providing information to a second access point, said information comprising an indication of the type of the carrier used by the first access point, the type being a primary listen-before-talk carrier or a secondary listen-before-talk carrier, wherein the primary listen-before-talk carrier differs from the secondary listen-before-talk carrier in that carrier sense multiple access with collision avoidance with exponential back-off is configured to occur only on the primary listen-before-talk carrier but not on the secondary listen-before-talk carrier, and energy detect clear channel assessment is configured to occur on the secondary listen-before-talk carrier after the primary listen-before-talk carrier is detected to be idle.
An apparatus, comprising:
- at least one processor;
- and
- at least one memory including a computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to:
- receive, at a user equipment, information from a first access point using a carrier, said information comprising an indication of the type of the carrier, the type of the carrier is a primary listen-before-talk carrier or a secondary listen-before-talk carrier;
- and
- provide information to a second access point, said information comprising an indication of the type of the carrier used by the first access point, the type being a primary listen-before-talk carrier or a secondary listen-before-talk carrier, wherein the primary listen-before-talk carrier differs from the secondary listen-before-talk carrier in that carrier sense multiple access with collision avoidance with exponential back-off is configured to occur only on the primary listen-before-talk carrier but not on the secondary listen-before-talk carrier, and energy detect clear channel assessment is configured to occur on the secondary listen-before-talk carrier after the primary listen-before-talk carrier is detected to be idle.
3 more elements
Dependencies are inferred from the claim text.