User equipment configured to provide synchronization information for sidelink D2D communications using allocated resource units

• US 10,091,818 B2
• Filed: 02/07/2018
• Issued: 10/02/2018
• Est. Priority Date: 04/13/2012
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Intel Corporation
• Inventors: Li, Qinghua, Li, Honggang, Niu, Huaning, Hsuan, Yi, Zhu, Yuan, Chen, Xiaogang, Fwu, Jong-Kae, Davydov, Alexei Vladimirovich, Yin, Hujun, Lin, Xintian E., Wong, Wendy C., Zhang, Yujian, Papathanassiou, Apostolos
• Primary Examiner(s): AMBAYE, MEWALE A
• Application Number:
  US15/890,680
• Publication Number:
  US 20180167974A1
• Time in Patent Office: 237 Days
• CPC Class Codes: H04L 12/189 in combination with wireless systems selective distribution or broadcast in wireless communication networks H04W4/06
• CPC Class Codes: H04L 5/0001 Arrangements for dividing the transmission path duplexing H04L5/14; multiplexing of different sources on one path H04J
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0037 Inter-user or inter-terminal allocation
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0064 Rate requirement of the data, e.g. scalable bandwidth, data priority
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 28/02 Traffic management, e.g. flow control or congestion control
• CPC Class Codes: H04W 28/0226 based on location or mobility handoff or reselection H04W36/00; mobile application services making use of the location of users or terminals H04W4/02
• CPC Class Codes: H04W 28/0268 using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR] negotiating SLA or negotiating QoS H04W28/24
• CPC Class Codes: H04W 36/0016 Hand-off preparation specially adapted for end-to-end data sessions
• CPC Class Codes: H04W 36/08 Reselecting an access point
• CPC Class Codes: H04W 4/06 Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/20 : Control channels or signalling for resource management
• CPC Class Codes: H04W 72/23 : in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/542 : using measured or perceived quality
• CPC Class Codes: H04W 74/0808 : using carrier sensing, e.g. carrier sense multiple access [CSMA]
• CPC Class Codes: H04W 74/0833 : Random access procedures, e.g. with 4-step access
• CPC Class Codes: H04W 76/10 : Connection setup
• CPC Class Codes: H04W 76/19 : Connection re-establishment
• CPC Class Codes: Y02D 30/70 : in wireless communication networks

Abstract

A signal structure for use in D2D communications is described. In one embodiment, a preamble for automatic gain control at the receiver end is included in the transmitted signal. Techniques for scheduling of D2D transmissions using carrier sensing multiple access (CSMA) and a power control schemes for interference management are also described.

Claims

1. An apparatus of user equipment (UE) configured for direct communication with one or more other UEs, the apparatus comprising:

a memory; and

a processing circuitry, configured to;

demodulate signaling acquired from an enhanced node B (eNB), the signaling indicating resource configuration information for a sidelink communication, the sidelink communication comprising a device-to-device (D2D) communication between UEs;

modulate control information, for the D2D communication, for transmission within resources of a physical D2D control channel in accordance with a single-carrier frequency division multiplexing (SC-FDM) technique;

modulate data for the D2D communication for transmission within resources of a physical D2D shared channel, in accordance with the SC-FDM technique; and

generate a demodulation reference signal (DMRS) for transmission within resources allocated for D2D communications,

wherein resource blocks for the D2D communication are determined in accordance with a predefined hopping pattern when frequency hopping is enabled, and

wherein the DMRS is configured for demodulation of the physical D2D control Channel and the physical D2D shared channel by another UE.

2. The apparatus of claim 1 wherein the processing circuitry is further configured to modulate synchronization information for the D2D communication for transmission by the UE, the synchronization information based on the demodulated signaling.

3. The apparatus of claim 1 wherein the processing circuitry is configured to decode the signaling acquired from the eNB to determine the resources allocated for the D2D communication, including the resources of the physical D2D control channel and the resources of the physical D2D shared channel.

4. The apparatus of claim 1 wherein the UE is configured to include a cyclic prefix for the D2D communication to another UE, and

wherein a length of the cyclic prefix for the D2D communication is different than a length of a cyclic prefix used for uplink transmissions to the eNB.

6. The apparatus of claim 1 wherein the processing circuitry is configured to derive synchronization information from signals received from the eNB.

7. The apparatus of claim 1 wherein the processing circuitry is configured to derive synchronization information from signals received from another UE acting as a synchronization reference for the D2D communication.

8. The apparatus of claim 1 further comprising transceiver circuitry that is configurable for a multi-carrier transmission in accordance with an orthogonal frequency division multiplexing technique and that is configurable for single-carrier transmission in accordance with the SC-FDM technique.

9. The apparatus of claim 8 further comprising one or more antennas coupled to the transceiver circuitry.

5. An apparatus of user equipment (UE) configured for direct communication with one or more other UE, the apparatus comprising:

a memory; and

a processing circuitry, configured to;

demodulate signaling acquired from an enhanced node B (eNB), the signaling indicating resource configuration information for a sidelink communication, the sidelink communication comprising a device-to-device (D2D) communication between UE;

modulate control information, for the D2D communication, for transmission within resources of a physical D2D control channel in accordance with a single-carrier frequency division multiplexing (SC-FDM) technique;

modulate data for the D2D communication for transmission within resources of a physical D2D shared channel, in accordance with the SC-FDM technique; and

generate a demodulation reference signal (DMRS) for transmission within resources allocated for D2D communications,

wherein resources blocks for the D2D communication are determined in accordance with a predefined hopping pattern when frequency hopping is enabled,

wherein the UE is configured to include a cyclic prefix for the D2D communication to another UE,

wherein a length of the cyclic prefix for the D2D communication is different than a length of a cyclic prefix used for uplink transmission to the eNB, and

wherein the length of the cyclic prefix for the D2D communication is shorter than the length of the cyclic prefix for the uplink transmission.

10. A non-transitory computer-readable storage medium that stores instructions for execution by a processing circuitry of a user equipment (UE) configured for direct communication with one or more other UEs, the instructions to configure the processing circuitry to:

demodulate signaling acquired from an enhanced node B (eNB), the signaling indicating resource configuration information for a sidelink communication, the sidelink communication comprising a device-to-device (D2D) communication between UEs;

modulate control information, for the D2D communication, for transmission within resources of a physical D2D control channel in accordance with a single-carrier frequency division multiplexing (SC-FDM) technique;

modulate data for the D2D communication for transmission within resources of a physical D2D shared channel, in accordance with the SC-FDM technique; and

generate a demodulation reference signal (DMRS) for transmission within resources allocated for D2D communications,

wherein resource blocks for the D2D communication are determined in accordance with a predefined hopping pattern when frequency hopping is enabled, and

wherein the DMRS is configured for demodulation of the physical D2D control channel and the physical D2D shared channel by another UE.

11. The non-transitory computer-readable storage medium of claim 10 wherein the processing circuitry is further configured to modulate synchronization information for the D2D communication for transmission by the UE, the synchronization information based on the demodulated signaling.

12. The non-transitory computer-readable storage medium of claim 10 wherein the processing circuitry is configured to decode the signaling acquired from the eNB to determine the resources allocated for the D2D communication, including the resources of the physical D2D control channel and the resources of the physical D2D shared channel.

13. An apparatus of user equipment (UE) configured for direct communication with one or more other UEs, the apparatus comprising:

a memory; and

a processing circuitry, configured to;

demodulate signaling acquired from an enhanced node B (eNB), the signaling indicating resource configuration information for a sidelink communication, the sidelink communication comprising a device-to-device (D2D) communication between UEs;

demodulate control information, for the D2D communication, received within resources of a physical D2D control channel in accordance with a single-carrier frequency division multiplexing (SC-FDM) technique;

demodulate data for the D2D communication received within resources of a physical D2D shared channel, in accordance with the SC-FDM technique;

demodulate a demodulation reference signal (DMRS) received within resources allocated for D2D communications; and

demodulate the physical D2D control channel and the physical D2D shared channel based on the demodulated DMRS;

wherein resource blocks for the D2D communication are determined in accordance with a predefined hopping pattern when frequency hopping is enabled, and

wherein the DMRS is configured for demodulation of the physical D2D control channel and the physical D2D shared channel and is received from another UE.

14. The apparatus of claim 13 wherein the physical D2D control channel and the physical D2D shared channel are received from another UE.

15. The apparatus of claim 13 wherein the processing circuitry is configured to derive synchronization information from signals received from another UE acting as a synchronization reference for the D2D communication.