Signal designs for D2D subframes
AssigneeIntel Corporation
InventorsDebdeep Chatterjee, Seunghee Han, Gang Xiong, Huaning Niu
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Abstract
Embodiments of the present disclosure describe apparatuses and methods for signal designs for device-to-device (D2D) subframes. Various embodiments may include a UE with a radio transceiver to communicate with another UE via D2D communications. The UE may further include processing circuitry to generate a cyclic prefix (CP) for a first or second symbol of a D2D subframe at an orthogonal frequency division multiplexing (OFDM) resource block or a single-carrier frequency-division multiple access (SC-FDMA) resource block. Other embodiments may be described and/or claimed.
Claims10
A communication module, comprising:
- a radio transceiver to communicate with another communication module via a device-to-device (D2D) communication;
- and
- processing circuitry, coupled to the radio transceiver, to:
- schedule a D2D subframe to be transmitted at a timing advance (TA), which is at least 624 basic time units (Ts), ahead of a serving cell downlink reference time, wherein one basic time unit equals 1/30720000 seconds;
- receive a first value from an eNB and determine the TA based on the first value;
- transmit, via the radio transceiver, information to the other communication module using the D2D subframe:
- and
- generate a guard interval within the D2D subframe by not transmitting at least a part of a data symbol of the D2D subframe.
A communication module comprising:
- a radio transceiver to communicate with another communication module via a device-to-device (D2D) communication:
- and
- processing circuitry, coupled to the radio transceiver, to:
- schedule a D2D subframe to be transmitted with a timing advance (TA), which is at least 624 basic time units (Ts), ahead of a serving cell downlink reference time,
- wherein one basic time unit equals 1/30720000 seconds, the TA equals (NTA +624)*Ts, and the NTA is a value predetermined by the communication module.
One or more non-transitory, computer-readable media having instructions that when executed, cause a user equipment (UE) to:
- determine a downlink reference time based on timing of a serving cell transmission;
- schedule a device-to-device (D2D) subframe to be transmitted at a timing advance (TA), which is at least 624 basic time units, ahead of the downlink reference time, wherein one basic time unit (Ts) equals 1/30720000 seconds and the UE is to receive a first value from an eNB and determine the TA based on the first value;
- transmit information to another UE using the D2D subframe;
- and
- cause the UE to perform a switching between reception and transmission within a time period of the TA,
- wherein the instructions, when executed, further cause the UE to not transmit an entirety of a last Single Carrier Frequency-Division Multiple Access (SC-FDMA) symbol of the D2D subframe.
One or more non-transitory, computer-readable media having instructions that, when executed, cause a user equipment (UE) to:
- determine a downlink reference time based on timing of a serving cell transmission;
- schedule a device-to-device (D2D) subframe to be transmitted at a timing advance (TA), which is at least 624 basic time units, ahead of the downlink reference time, wherein one basic time unit (Ts) equals 1/30720000 seconds and the UE is to receive a first value from an eNB and determine the TA based on the first value;
- transmit information to another UE using the D2D subframe:
- and
- generate a guard interval within the D2D subframe by not transmitting at least a part of a data symbol of the D2D subframe.
Dependencies are inferred from the claim text.