User equipment and method for packet based device-to-device (D2D) discovery in an LTE network
First Claim
1. An apparatus of a user equipment (UE) configured for proximity services (ProSe), the apparatus comprising:
- memory; and
processing circuitry, configured to;
decode a system information block (SIB) from an enhanced node B (eNB), the SIB comprising discovery resource configuration information for direct UE-to-UE communications, the SIB including an indication of resources of a discovery resource pool for transmission and reception of discovery packets;
encode a discovery packet to include a discovery payload and a cyclic-redundancy check (CRC), the discovery packet having a predetermined size;
configure the encoded discovery packet for transmission within the resources of the discovery resource pool in accordance with a quadrature phase-shift keying (QPSK) modulation scheme;
generate a demodulation reference signal (DMRS) for transmission within the resources of the discovery resource pool, the DMRS mapped to a base sequence configured for demodulation of the discovery packet,wherein the DMRS is configured for demodulation of the discovery packet by another UE.
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Accused Products
Abstract
Embodiments of a User Equipment (UE) and methods for packet based device-to-device (D2D) discovery in an LTE network are generally described herein. In some embodiments, UE may be enabled for proximity services and may be configured to receive signaling from an enhanced node B (eNB) indicating resources allocated for D2D discovery. The UE may configure a discovery packet in accordance with a predetermined configuration to have at least a discovery payload and a cyclic-redundancy check (CRC). The discovery payload may include discovery-related content. The UE may be configured to transmit the discovery packet on at least some of the indicated resources for receipt by a receiving UE. In some embodiments, a demodulation reference signal (DMRS) may be selected to indicate a payload size and/or MCS of the discovery packet'"'"'s payload.
215 Citations
17 Claims
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1. An apparatus of a user equipment (UE) configured for proximity services (ProSe), the apparatus comprising:
- memory; and
processing circuitry, configured to;decode a system information block (SIB) from an enhanced node B (eNB), the SIB comprising discovery resource configuration information for direct UE-to-UE communications, the SIB including an indication of resources of a discovery resource pool for transmission and reception of discovery packets; encode a discovery packet to include a discovery payload and a cyclic-redundancy check (CRC), the discovery packet having a predetermined size; configure the encoded discovery packet for transmission within the resources of the discovery resource pool in accordance with a quadrature phase-shift keying (QPSK) modulation scheme; generate a demodulation reference signal (DMRS) for transmission within the resources of the discovery resource pool, the DMRS mapped to a base sequence configured for demodulation of the discovery packet, wherein the DMRS is configured for demodulation of the discovery packet by another UE. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- memory; and
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10. A non-transitory computer-readable storage medium that stores instructions for execution by processing circuitry of a user equipment (UE) to configure the UE to:
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decode a system information block (SIB) from an enhanced node B (eNB), the SIB comprising discovery resource configuration information for direct UE-to-UE communications, the SIB including an indication of resources of a discovery resource pool for transmission and reception of discovery packets; encode a discovery packet to include a discovery payload and a cyclic-redundancy check (CRC), the discovery packet having a predetermined size; configure the encoded discovery packet for transmission without a header within the resources of the discovery resource pool in accordance with a quadrature phase-shift keying (QPSK) modulation scheme; and generate a demodulation reference signal (DMRS) for transmission within the resources of the discovery resource pool, the DMRS mapped to a base sequence configured for demodulation of the discovery packet, wherein the DMRS is configured for demodulation of the discovery packet by another UE. - View Dependent Claims (11, 12)
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13. An apparatus of a user equipment (UE) configured for proximity services (ProSe), the apparatus comprising:
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memory; and processing circuitry, configured to; decode a system information block (SIB) from an enhanced node B (eNB), the SIB comprising discovery resource configuration information for direct UE-to-UE communications, the SIB including an indication of resources of a discovery resource pool for transmission and reception of discovery packets; decode an encoded discovery packet received within the resources of the discovery resource pool, the encoded discovery packet modulated in accordance with a quadrature phase-shift keying (QPSK) modulation scheme, the discovery packet including a discovery payload and a cyclic-redundancy check (CRC), the discovery packet having a predetermined size; decode a demodulation reference signal (DMRS) received within the resources of the discovery resource pool, the DMRS mapped to a base sequence and configured for demodulation of the discovery packet; wherein the encoded discovery packet is devoid of a header. - View Dependent Claims (14, 15, 16, 17)
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Specification