User equipment and protocol and methods for device-to-device communication

Patent metadata

Field	Value
Publication number	US-2016234702-A1
Application number	US-201414914331-A
Country	US
Kind code	A1
Filing date	Sep 18, 2014
Priority date	Sep 26, 2013
Publication date	Aug 11, 2016
Grant date	—

Abstract

Embodiments of a UE and methods for D2D communication are generally described herein. The UE may transmit, as part of an in-network communication session, a D2D discovery status message. The D2D discovery status message may indicate an initiation or termination of a D2D discovery operation at the UE and may indicate if the UE is announcing or monitoring part of the D2D discovery operation. The D2D discovery operation may be at least partly for configuring a D2D communication session between the UE and one or more other UEs. The UE may transmit, as part of the D2D discovery operation, a D2D discovery signal for reception at one or more other UEs. The UE may transmit and receive D2D packets over a direct link to a second UE as part of the D2D communication session.

First claim

What is claimed is:

1 . A User Equipment (UE) to operate in accordance with a device-to-device (D2D) communication mode, comprising hardware circuitry to:
receive, as part of an in-network communication session, one or more D2D resource parameters from an Evolved Node-B (eNB); transmit, as part of the in-network communication session, a D2D discovery status message for a D2D discovery operation at the UE; and transmit, as part of the D2D discovery operation, a D2D discovery signal for reception at one or more other UEs; wherein the D2D discovery signal is transmitted according to a transmission time and transmission frequency resources determined at least partly from the D2D resource parameters.

2 . The UE according to claim 1 , wherein:
the D2D discovery status message indicates an initiation or termination of the D2D discovery operation at the UE; and the D2D discovery status message indicates if the UE is announcing or monitoring as part of the D2D discovery operation.

3 . The UE according to claim 1 , wherein the transmission of the D2D discovery status message occurs while the UE is in a Radio Resource Control (RRC) connected mode or during an RRC connection setup procedure.

4 . The UE according to claim 1 , wherein:
the hardware circuitry is further to receive, as part of the D2D discovery operation, a second D2D discovery signal from a second UE; and the second D2D discovery signal is received according to a reception time and reception frequency resources determined at least partly from the D2D resource parameters.

5 . The UE according to claim 4 , wherein:
the D2D resource parameters include assistance information for D2D discovery resources of a second, different eNB; the second UE is engaged in an in-network communication session with the second eNB; and the reception time and reception frequency resources for the reception of the second D2D discovery signal are determined at least partly from the assistance information.

6 . The UE according to claim 5 , wherein:
the assistance information includes information related to a measurement gap for the second eNB; and the reception time for the reception of the second D2D discovery signal is based at least partly on the measurement gap for the second eNB.

7 . The UE according to claim 1 , the hardware processing circuitry further to transmit, as part of the in-network communication session, a D2D discovery resource request message for reception at the eNB.

8 . The UE according to claim 1 , wherein the D2D discovery resource parameters received from the eNB are included in one or more System Information Blocks (SIBs) transmitted from the eNB.

9 . The UE according to claim 1 , wherein:
the D2D discovery operation is at least partly for configuring a D2D communication session between the UE and one or more other UEs; and the hardware processing circuitry is further to transmit and receive D2D packets over a direct link to a second UE as part of the D2D communication session.

10 . The UE according to claim 9 , wherein the hardware processing circuitry is further to:
receive packets from the eNB as part of the in-network communication session; and when the reception of D2D packets collides with the reception of packets from the eNB, refrain from receiving the D2D packets.

11 . The UE according to claim 9 , wherein the hardware processing circuitry is further to:
transmit control packets for reception at the eNB as part of the in-network communication session; and when transmission of D2D discovery signals collides with the transmission of control packets, refrain from transmitting the D2D discovery signals.

12 . The UE according to claim 9 , wherein:
the transmitted D2D packets are transmitted according to a first integrity for the D2D communication session based at least partly on a first Message Authentication Code (MAC) generated at least partly from a first counter value; and the hardware processing circuitry is further to:
transmit, for reception at the eNB, an integrity failure notification in response to a detection of a failure of the first integrity for the D2D communication session;
receive, from the eNB, a second counter value; and
generate a second MAC, based at least partly on the second counter value, to enable a second integrity for the D2D communication session.

13 . The UE according to claim 1 , wherein:
the UE includes an application layer, a Radio Resource Control (RRC) layer and a Non-Access Stratum (NAS) layer; the transmission time and the transmission frequency resources for the transmission of the D2D discovery signal are determined at least partly at the RRC layer; and the RRC layer is configured by the NAS layer to transmit the D2D discovery signal in response to a reception at the NAS layer of a D2D discovery enabling command from the application layer.

14 . The UE according to claim 1 , wherein the UE is further to operate in accordance with proximity-based services (Pro-Se).

15 . A non-transitory computer-readable storage medium that stores instructions for execution by one or more processors to perform operations for communication in a device-to-device (D2D) mode, the operations to configure the one or more processors to:
receive, as part of an in-network communication session, one or more D2D resource parameters from an Evolved Node-B (eNB); transmit, as part of the in-network communication session, a D2D discovery status message for a D2D discovery operation at the UE; and transmit, as part of the D2D discovery operation, a D2D discovery signal for reception at one or more other UEs; wherein the D2D discovery signal is transmitted according to a transmission time and transmission frequency resources determined at least partly from the D2D resource parameters.

16 . The non-transitory computer-readable storage medium according to claim 15 , wherein:
the D2D discovery status message indicates an initiation or termination of the D2D discovery operation at the UE; the D2D discovery status message indicates if the UE is announcing or monitoring as part of the D2D discovery operation; and the transmission of the D2D discovery status message occurs while the UE is in a Radio Resource Control (RRC) connected mode or during an RRC connection setup procedure.

17 . The non-transitory computer-readable storage medium according to claim 15 , wherein:
the operations further configure the one or more processors to receive, as part of the D2D discovery operation, a second D2D discovery signal from a second UE; the D2D resource parameters include assistance information for D2D discovery resources of a second, different eNB; the second UE is engaged in an in-network communication session with the second eNB; the reception time and reception frequency resources for the reception of the second D2D discovery signal are determined at least partly from the assistance information; the assistance information includes information related to a measurement gap for the second eNB; and the reception time for the reception of the second D2D discovery signal is based at least partly on the measurement gap for the second eNB.

18 . The non-transitory computer-readable storage medium according to claim 15 , wherein:
the D2D discovery operation is at least partly for configuring a D2D communication session between the UE and one or more other UEs; and the operations further configure the one or more processors to transmit and receive D2D packets over a direct link to a second UE as part of the D2D communicatio

Assignees

• Intel Ip Corp

Inventors

• Heo Youn Hyoung
• Zong Pingping
• Stojanovski Alexandre Saso
• Luft Achim

Classifications

• H04W72/23

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04B7/0639

  Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection · CPC title

• H04L5/0048

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title

• H04L5/0035

  Resource allocation in a cooperative multipoint environment · CPC title

• H04W8/005 Primary

  Discovery of network devices, e.g. terminals · CPC title