Network assisted device to device discovery

• US 10,045,192 B2
• Filed: 12/20/2013
• Issued: 08/07/2018
• Est. Priority Date: 02/22/2013
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Intel IP Corporation (Intel Corporation)
• Inventors: Niu, Huaning, Panteleev, Sergey, Khoryaev, Alexey, Chatterjee, Debdeep, Xiong, Gang
• Primary Examiner(s): Orgad, Edan
• Assistant Examiner(s): Shah, Saumit
• Application Number:
  US14/767,671
• Publication Number:
  US 20160014589A1
• Time in Patent Office: 1,691 Days
• Field of Search: 370329
• CPC Class Codes: H04L 12/4633 Interconnection of networks using encapsulation techniques, e.g. tunneling
• CPC Class Codes: H04L 2101/677 Multiple interfaces, e.g. multihomed nodes
• CPC Class Codes: H04L 27/2614 Peak power aspects
• CPC Class Codes: H04L 45/30 Routing of multiclass traffic
• CPC Class Codes: H04L 47/11 Identifying congestion
• CPC Class Codes: H04L 47/12 Avoiding congestion; Recovering from congestion
• CPC Class Codes: H04L 61/2514 between local and global IP addresses
• CPC Class Codes: H04L 61/2525 Translation at a client
• CPC Class Codes: H04L 61/2539 Hiding addresses; Keeping addresses anonymous
• CPC Class Codes: H04L 61/2564 for a higher-layer protocol, e.g. for session initiation protocol [SIP]
• CPC Class Codes: H04L 61/2575 using address mapping retrieval, e.g. simple traversal of user datagram protocol through session traversal utilities for NAT [STUN]
• CPC Class Codes: H04L 61/2592 using tunnelling or encapsulation
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 24/06 Testing, supervising or monitoring using simulated traffic
• CPC Class Codes: H04W 28/02 Traffic management, e.g. flow control or congestion control
• CPC Class Codes: H04W 28/0289 Congestion control load shedding arrangements in network planning H04W16/08; performing reselection for handling the traffic H04W36/22; wireless traffic scheduling H04W72/12
• CPC Class Codes: H04W 28/12 using signalling between network elements
• CPC Class Codes: H04W 36/0088 Scheduling hand-off measurements
• CPC Class Codes: H04W 36/30 by measured or perceived connection quality data
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 4/80 : Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
• CPC Class Codes: H04W 40/02 : Communication route or path selection, e.g. power-based or shortest path routing
• CPC Class Codes: H04W 40/244 : using a network of reference devices, e.g. beaconing
• CPC Class Codes: H04W 48/08 : Access restriction or access information delivery, e.g. discovery data delivery signalling during connection H04W76/00
• CPC Class Codes: H04W 48/14 : using user query or user detection
• CPC Class Codes: H04W 48/16 : Discovering, processing access restriction or access information
• CPC Class Codes: H04W 48/18 : Selecting a network or a communication service
• CPC Class Codes: H04W 52/0216 : using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 52/028 : switching on or off only a part of the equipment circuit blocks
• CPC Class Codes: H04W 72/02 : Selection of wireless resources by user or terminal
• CPC Class Codes: H04W 72/0446 : Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/21 : in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/23 : in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/30 : Resource management for broadcast services
• CPC Class Codes: H04W 74/002 : Transmission of channel access control information
• CPC Class Codes: H04W 74/02 : Hybrid access
• CPC Class Codes: H04W 74/04 : Scheduled access hybrid access H04W74/02
• CPC Class Codes: H04W 74/08 : Non-scheduled access, e.g. ALOHA hybrid access H04W74/02
• CPC Class Codes: H04W 76/14 : Direct-mode setup
• CPC Class Codes: H04W 76/23 : Manipulation of direct-mode connections
• CPC Class Codes: H04W 76/27 : Transitions between radio resource control [RRC] states
• CPC Class Codes: H04W 76/28 : Discontinuous transmission [DTX]; Discontinuous reception [DRX]
• CPC Class Codes: H04W 8/005 : Discovery of network devices, e.g. terminals
• CPC Class Codes: H04W 84/12 : WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 88/06 : adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
• CPC Class Codes: Y02D 30/70 : in wireless communication networks

Abstract

Technology for a user equipment (UE) to communicate in a device to device (D2D) network is described. A temporary identification (Temp ID) can be received from an enhanced node B (eNB). A D2D discovery resource allocation can be received within a physical uplink channel from the eNB. A UE D2D discovery resource can be selected from the D2D discovery resource allocation based on the Temp ID. A D2D discovery beacon can be transmitted from the UE D2D discovery resource to enable other UEs to detect the UE.

Claims

1. A user equipment (UE) operable to communicate in a device to device (D2D) network, the UE comprising:

one or more processors configured to;

receive a temporary identification (Temp ID) from an enhanced node B (eNB);

receive a D2D discovery resource allocation within a physical uplink channel from the eNB;

select a UE D2D discovery resource from the D2D discovery resource allocation based on the Temp ID and a cell identification (cell ID) of the eNB wherein the UE identifies a resource block index, a slot index, and a discovery sequence index, based on the temp ID and the cell ID; and

transmit a D2D discovery beacon from the UE D2D discovery resource to enable other UEs to detect the UE; and

a memory coupled to the one or more processors and configured to store the Temp ID.

2. The UE of claim 1, wherein the physical uplink channel is a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH).

3. The UE of claim 1, wherein the one or more processors are further configured to:

discover a Temp ID for the other UEs in the D2D discovery resource allocation; and

communicate to the eNB, using a physical uplink shared channel (PUSCH), a list of Temp IDs of the other UEs that are discovered.

4. The UE of claim 1, wherein the one or more processors are further configured to receive a list of discovered UEs from the eNB using a physical uplink shared channel (PUSCH).

5. The UE of claim 1, wherein the one or more processors are further configured to:

receive a D2D discovery beacon from the other UEs; and

determine the Temp ID of the other UEs based on the D2D discovery beacon.

6. An enhanced node B (eNB) operable to communicate in a device to device (D2D) network, the eNB comprising:

one or more processors configured to;

communicate a D2D temporary identification (Temp ID) to a user equipment (UE);

communicate a unique Temp ID from the eNB for each antenna at the UE;

allocate a D2D discovery resource within a physical uplink channel for D2D discovery by UEs served by the eNB;

receive, from the UE, a list of Temp IDs of UEs discovered by the UE; and

communicate a list of discovered UEs, based on the list of Temp IDs, to the UE; and

a memory coupled to the one or more processors and configured to store the list of discovered UEs.

7. The NB of claim 6, wherein the physical uplink channel is a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH).

8. The NB of claim 6, wherein the received list of Temp IDs of UEs is received using a physical uplink shared channel (PUSCH).

9. The NB of claim 6, wherein the communicated list of discovered UEs is communicated to the UE using a physical uplink shared channel (PUSCH).

10. The NB of claim 6, wherein the communicated Temp ID is unique over a plurality of cells that are adjacent to the eNB.

11. The NB of claim 6, wherein a quantity of the D2D discovery resource changes based on a number of UEs within a cell served by the node.

12. A server operable to communicate with a user equipment (UE) that is operable to communicate in a device to device (D2D) network, the server comprising:

one or more processors configured to;

assign a temporary ID (Temp ID) to a user equipment (UE), wherein the Temp ID is configured to enable the UE to select a UE D2D discovery resource for use in D2D discovery from a D2D discovery resource allocated by an eNB wherein the Temp ID and a mapping rule enables the UE to select a UE D2D discovery resource source location within the D2D discovery resource allocated by the eNB, wherein the mapping rule comprises the number of resource elements in a resource block multiplied by a resource block index (RB index) added to a sequence identification (sequence ID);

receive a list of Temp IDs discovered by the UE within the D2D discovery resource allocated by the eNB; and

publish, for the list of Temp IDs discovered, a list of UE identifications associated with each Temp ID for communication to the UE to enable the UE to discover other UEs and form a D2D link; and

a memory coupled to the one or more processors and configured to store the D2D discovery resource.

13. The server of claim 12, wherein a number of the Temp IDs available to be assigned by the server is sufficient to allow each UE served by the eNB to have a unique D2D discovery resource.

14. The server of claim 12, wherein the RB index is determined at the UE based on the Temp ID.

15. The server of claim 14, wherein a new RB index is computed by modulating the sum of the RB index and the sequence ID by 78.

16. The server of claim 12, wherein the sequence ID is determined at the UE based on the Temp ID.

17. The server of claim 12, further configured to prevent half-duplexing by assigning a new Temp ID to a UE that has transmitted a D2D discovery beacon.

18. A method for allocating a device to device (D2D) discovery resource by an enhanced node B (eNB) to a user equipment (UE), comprising:

receiving an assignment of a temporary identification (temp ID) at the UE from the eNB, wherein the temp ID is unique for each UE operating in a cell served by the eNB and the Temp ID is unique for each antenna at the UE;

identifying a unique transmission location in a physical uplink control channel (PUCCH), based on the Temp ID, for communication of a D2D discovery beacon by the UE; and

transmitting the D2D discovery beacon from the UE at the unique transmission location to enable other D2D devices to discover the UE.

19. The method of claim 18, wherein identifying the unique transmission location further comprises receiving an allocation of a selected number of slots in the PUCCH for a discovery zone, wherein each slot comprises a selected number of resource blocks.

20. The method of claim 19, wherein each of the resource blocks further comprise a selected number of subcarriers and a selected number of orthogonal frequency-division multiplexing (OFDM) symbols.

21. The method of claim 20, wherein a subcarriers length for each of the resource blocks is a length-12 quadrature phase shift keying (QPSK) modulated sequence with a selected peak-to-average power ratio (PAPR).

22. The method of claim 21, wherein the OFDM symbols length for each of the resource blocks is 7 OFDM symbols using an orthogonal cover code.

23. The method of claim 18, further comprising identifying a unique transmission location using a Hadamard matrix.

24. The method of claim 18, wherein the discovery beacon is transmitted based on a D2D discovery sequence design.

25. The method of claim 24, wherein the D2D discovery sequence design is based on:

a correlation property;

a resource available; and

a peak-to-average power ratio (PAPR).