Method and apparatus for configuring and detecting cyclic prefix length in cell supporting multiple subcarrier spacings
AssigneeKt Corporation
InventorsKyujin Park, Woo-jin Choi
Life of this patent
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Abstract
The present embodiments relate to a method for configuring a cyclic prefix for a next generation/5G radio access network (referred to as new radio (NR)) about which 3GPP has begun discussions. According to the present embodiments, a base station configures cyclic prefix (CP) lengths for secondary numerology except for reference numerology and sets, through RRC signaling, the values of the CP lengths configured for the secondary numerology, thereby enabling a terminal to detect the CP lengths for the secondary numerology in a cell supporting mixed numerology.
Claims8
A method of detecting a cyclic prefix length by a user equipment in a cell supporting a plurality of subcarrier spacings, the method comprising:
- receiving a synchronization signal via a first subcarrier spacing;
- receiving data or signal via one or more second subcarrier spacings except for the first subcarrier spacing;
- and
- receiving a value indicating cyclic prefix lengths for the second subcarrier spacing,
- wherein the cyclic prefix length comprises a normal cyclic prefix length and an extended cyclic prefix length, and a ratio of the normal cyclic prefix length and the extended cyclic prefix length to a symbol length for each subcarrier spacing is configured according to a ratio of a normal cyclic prefix length and an extended cyclic prefix length to a symbol length defined in a cell supporting a fixed subcarrier spacing.
A user equipment for detecting a cyclic prefix in a cell supporting a plurality of subcarrier spacings, the user equipment comprising:
- a receiver configured to receive i) a synchronization signal via a first subcarrier spacing and ii) data or signal via one or more second subcarrier spacings except for the first subcarrier spacing;
- and
- a controller configured to detect a cyclic prefix length based on a value indicating cyclic prefix lengths for the second subcarrier spacing,
- wherein the cyclic prefix length comprises a normal cyclic prefix length and an extended cyclic prefix length, and a ratio of the normal cyclic prefix length and the extended cyclic prefix length to a symbol length for each subcarrier spacing is configured according to a ratio of a normal cyclic prefix length and an extended cyclic prefix length to a symbol length defined in a cell supporting a fixed subcarrier spacing.
Dependencies are inferred from the claim text.