Patent ID: 11888785
Assignee: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.
Field: nan (nan)
Classification: CPC nan | IPC H

Claim 6:
7. A method of operating a user equipment of a wireless system using a time division duplex (TDD) scheme, the method comprising:
periodically monitoring a preemption indicator indicating a preempted resource within a predetermined period, wherein the predetermined period includes a first plurality of orthogonal frequency division multiplexing (OFDM) symbols which comprise one or more uplink (UL) symbol, one or more downlink (DL) symbols, and one or more flexible symbols configured as neither a UL symbol nor a DL symbol, wherein the one or more DL symbols, the one or more UL symbols and the one or more flexible symbols are configured by a cell specific radio resource control (RRC) signal, wherein at least one of the one or more flexible symbols is additionally configured as a UL symbol by a user equipment specific RRC signal, and
when receiving the preemption indicator, determining a second plurality of OFDM symbols among which the preemption indicator indicates a preempted resource, wherein the second plurality of OFDM symbols are OFDM symbols included in the first plurality of OFDM symbols except for the one or more UL symbols configured by the cell specific RRC signal, wherein the second plurality of OFDM symbols includes the UL symbol configured by the user equipment specific RRC signal,
when receiving the preemption indicator, determining a resource in which transmission from a base station to the user equipment occurs among a resource scheduled to the user equipment based on the preemption indicator, and
decoding data received from the base station based on the determined resource,
wherein the second plurality of OFDM symbols are divided into a plurality of groups, the preemption indicator includes a bitmap, and each of bits in the bitmap corresponds to each of the plurality of groups and indicates whether at least one OFDM symbol in a group corresponding to the each of bits in the bitmap is preempted,
wherein a number of the plurality of groups is predetermined,
wherein the number of the plurality of groups is N,
wherein a number of the second plurality of OFDM symbols is S,
wherein each of mod(S, N) groups includes ceil(S/N) OFDM symbols and each of N−mod(S, N) groups includes floor(S/N) OFDM symbols,
wherein the mod(x, y) represents x−floor(x/y)*y,
wherein the floor(x) represents a largest integer less than or equal to x,
wherein the ceil(x) represents a smallest integer number greater than or equal to x.