Configuration by enb for d2d ue to network relay search

Patent metadata

Field	Value
Publication number	US-2016286374-A1
Application number	US-201615061896-A
Country	US
Kind code	A1
Filing date	Mar 4, 2016
Priority date	Mar 24, 2015
Publication date	Sep 29, 2016
Grant date	—

Abstract

A method, a computer-readable medium, and an apparatus are provided. The apparatus may be a user equipment (UE). The apparatus may transmit, to a base station, information indicating a capability to communicate with one or more relay UEs. In addition, the apparatus may receive, from the base station, configuration information associated with a discovery procedure for identifying the one or more relay UEs. Further, the apparatus may perform the discovery procedure based on the configuration information.

First claim

What is claimed is:

1 . A method of wireless communication for a user equipment (UE) comprising:
transmitting, to a base station, information indicating a capability to communicate with one or more relay UEs; receiving, from the base station, configuration information associated with a discovery procedure for identifying the one or more relay UEs; and performing the discovery procedure based on the configuration information.

2 . The method of claim 1 , further comprising:
performing one or more measurements of a radio link between the UE and the base station; and transmitting the one or more measurements to the base station.

3 . The method of claim 2 , wherein the configuration information comprises a reference signal received power (RSRP) threshold and hysteresis, and wherein the UE performs the discovery procedure when an RSRP of the radio link between the UE and the base station is less than or equal to the RSRP threshold.

4 . The method of claim 2 , wherein the configuration information comprises a command to perform the discovery procedure.

5 . The method of claim 4 , wherein the configuration information is received in a radio resource control (RRC) reconfiguration message or a system information block (SIB).

6 . The method of claim 1 , further comprising:
selecting a relay UE from among the one or more identified relay UEs based on the configuration information; establishing a radio link with the selected relay UE; and communicating with the base station through the radio link established with the selected relay UE.

7 . The method of claim 1 , wherein the configuration information enables the discovery procedure to be performed prior to a failure of a radio link between the UE and the base station.

8 . The method of claim 1 , further comprising:
detecting a failure of a radio link between the UE and the base station, wherein the configuration information enables the discovery procedure to be performed upon detecting the failure of the radio link between the UE and the base station.

9 . The method of claim 1 , further comprising selecting any relay UE from among the one or more identified relay UEs when the configuration information does not include any relay UE selection criteria.

10 . A user equipment (UE) comprising:
means for transmitting, to a base station, information indicating a capability to communicate with one or more relay UEs; means for receiving, from the base station, configuration information associated with a discovery procedure for identifying the one or more relay UEs; and means for performing the discovery procedure based on the configuration information.

11 . The UE of claim 10 , further comprising:
means for performing one or more measurements of a radio link between the UE and the base station; and means for transmitting the one or more measurements to the base station.

12 . The UE of claim 11 , wherein the configuration information comprises a reference signal received power (RSRP) threshold and hysteresis, and wherein the UE performs the discovery procedure when an RSRP of the radio link between the UE and the base station is less than or equal to the RSRP threshold.

13 . The UE of claim 11 , wherein the configuration information comprises a command to perform the discovery procedure.

14 . The UE of claim 13 , wherein the configuration information is received in a radio resource control (RRC) reconfiguration message or a system information block (SIB).

15 . The UE of claim 10 , further comprising:
means for selecting a relay UE from among the one or more identified relay UEs based on the configuration information; means for establishing a radio link with the selected relay UE; and means for communicating with the base station through the radio link established with the selected relay UE.

16 . The UE of claim 10 , wherein the configuration information enables the discovery procedure to be performed prior to a failure of a radio link between the UE and the base station.

17 . The UE of claim 10 , further comprising:
means for detecting a failure of a radio link between the UE and the base station, wherein the configuration information enables the discovery procedure to be performed upon detecting the failure of the radio link between the UE and the base station.

18 . The UE of claim 10 , further comprising means for selecting any relay UE from among the one or more identified relay UEs when the configuration information does not include any relay UE selection criteria.

19 . A user equipment (UE) comprising:
a memory; and at least one processor coupled to the memory and configured to:
transmit, to a base station, information indicating a capability to communicate with one or more relay UEs;
receive, from the base station, configuration information associated with a discovery procedure for identifying the one or more relay UEs; and
perform the discovery procedure based on the configuration information.

20 . The UE of claim 19 , wherein the at least one processor is further configured to:
perform one or more measurements of a radio link between the UE and the base station; and transmit the one or more measurements to the base station.

21 . The UE of claim 20 , wherein the configuration information comprises a reference signal received power (RSRP) threshold and hysteresis, and wherein the at least one processor is configured to perform the discovery procedure when an RSRP of the radio link between the UE and the base station is less than or equal to the RSRP threshold.

22 . The UE of claim 20 , wherein the configuration information comprises a command to perform the discovery procedure.

23 . The UE of claim 22 , wherein the configuration information is received in a radio resource control (RRC) reconfiguration message or a system information block (SIB).

24 . The UE of claim 19 , wherein the at least one processor is further configured to:
select a relay UE from among the one or more identified relay UEs based on the configuration information; establish a radio link with the selected relay UE; and communicate with the base station through the radio link established with the selected relay UE.

25 . The UE of claim 19 , wherein the configuration information enables the discovery procedure to be performed prior to a failure of a radio link between the UE and the base station.

26 . The UE of claim 19 , wherein the at least one processor is further configured to:
detect a failure of a radio link between the UE and the base station, wherein the configuration information enables the discovery procedure to be performed upon detecting the failure of the radio link between the UE and the base station.

27 . The UE of claim 19 , wherein the at least one processor is further configured to select any relay UE from among the one or more identified relay UEs when the configuration information does not include any relay UE selection criteria.

28 . A computer-readable medium storing computer executable code for wireless communication, comprising code for:
transmitting, to a base station, information indicating a capability to communicate with one or more relay UEs; receiving, from the base station, configuration information associated with a discovery procedure for identifying the one or more relay UEs; and performing the discovery procedu

Assignees

• Qualcomm Inc

Inventors

• Baghel Sudhir Kumar
• Patil Shailesh
• Tavildar Saurabha Rangrao
• Cheng Hong
• Vanderveen Michaela
• Zisimopoulos Haris
• Sadiq Bilal
• Gulati Kapil

Classifications

• H04W88/04

  adapted for relaying to or from another terminal or user · CPC title

• H04W8/005 Primary

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

• H04W24/10

  Scheduling measurement reports {; Arrangements for measurement reports} · CPC title

• H04W48/16

  Discovering, processing access restriction or access information · CPC title

• H04W76/14

  Direct-mode setup · CPC title