Communications network and methods with enhanced duplex
AssigneeSharp Kabushiki Kaisha
InventorsTomoki Yoshimura, Zhanping Yin, Kenneth James Park
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Abstract
A wireless terminal communicates across a radio interface with a radio access network. The wireless terminal comprises receiver circuitry and processor circuitry. The receiver circuitry is configured to receive from the radio access network (1) slot format information comprising transmission direction configuration for each symbol in a slot for an uplink (UL) subband; and (2) validation information. The processor circuitry is configured to use the validation information to perform validation or invalidation of the transmission direction configuration for at least a portion of the UL subband.
Claims17
A wireless terminal which communicates across a radio interface with a radio access network, the wireless terminal comprising:
- receiver circuitry configured to receive from the radio access network:
- slot format information comprising transmission direction configuration for each symbol in a slot for an uplink (UL) subband;
- validation information;
- processor circuitry configured to use the validation information to perform validation or invalidation of the transmission direction configuration for at least a portion of the UL subband;
- wherein the validation information is obtained from downlink control information comprising slot format information formatted according to a DCI format;
- wherein the DCI format comprises an integer N number of slot format indication (SFI) fields and a cyclic redundancy check (CRC), and wherein the validation information comprises at least one of the following:
- an additional field of the DCI format;
- a radio network temporary identifier (RNTI) used to scramble the CRC;
- wherein the additional field comprises an X-bit field/bitmap, wherein X is an integer greater than 1 and each bit of the X-bit field/bitmap indicates either validation or invalidation of the UL subband;
- and
- wherein each bit of the X-bit field/bitmap is associated with at least one of the following:
- a slot of the UL subband;
- a group of orthogonal frequency division multiplexed (OFDM) symbols of the UL subband;
- an OFDM symbol of the UL subband.
A wireless terminal which communicates across a radio interface with a radio access network, the wireless terminal comprising:
- receiver circuitry configured to receive from the radio access network:
- slot format information comprising transmission direction configuration for each symbol in a slot for an uplink (UL) subband;
- validation information;
- processor circuitry configured to use the validation information to perform validation or invalidation of the transmission direction configuration for at least a portion of the UL subband;
- wherein the validation information is obtained from downlink control information comprising slot format information formatted according to a DCI format;
- and
- wherein the validation information is obtained from a format type of the slot format information.
An access node of a radio access network which communicates with a wireless terminal over a radio interface, the access node comprising:
- transmitter circuitry configured to transmit to the wireless terminal:
- slot format information comprising transmission direction configuration for each symbol in a slot for an uplink (UL) subband;
- validation information, wherein the validation information is based on a format type of the slot format information;
- receiver circuitry configured to receive from the wireless terminal information transmitted in symbols of the uplink subband according to the validation information.
Dependencies are inferred from the claim text.