Blackberry Corporation

Joon Beom Kim

Zhijun Cai

Changhoi Koo

Yi Song

Noun Choi

Hua Xu

A method for use in a first user equipment (UE) includes receiving, from a base station, control information and a resource assignment for uplink transmission; and transmitting, based on the control information, a discovery signal on the assigned resource for uplink transmission, the discovery signal including a first temporary UE identifier (ID) assigned to the first UE, wherein the first temporary UE ID is used to identify the first UE for device-to-device communication.

Methods and devices for performing proximity discovery

A method and apparatus for operating a user equipment (UE) in a wireless communications network, the method separately encoding and rate matching a first set of information bits and a second set of information bits; mapping and concatenating the encoded and rate matched first set of information bits with the encoded and rate matched second set of information bits, thereby creating a bit stream; and modulating and transmitting the bit stream.

Method and system for uplink HARQ and CSI multiplexing for carrier aggregation

A method and network element for providing reference signals to a user equipment, the method determining a reference signal pattern at the network element; and sending the reference signals to the user equipment using a reference signal mapping based on the reference signal pattern. Further a method and user equipment for receiving reference signals from a network element, the method determining a reference signal mapping at the user equipment; and detecting the reference signals at the user equipment using the reference signal mapping.

Method and system having reference signal design for new carrier types

A method, network node, and user equipments for providing parameters to a first user equipment served by the network element, the parameters describing at least a second user equipment for the purpose of the first user equipment initiating a device to device proximity discovery service with the second user equipment, the method collecting information for user equipments desiring device to device proximity discovery; creating a candidate user equipment list for a candidate tier based on the collected information at the network element, wherein each candidate tier comprises one or more thresholds based on timing advance values in use at the first or the at least the second user equipment; and providing the parameters describing at least a second user equipment to the first user equipment.

Method and apparatus for proximity discovery for device-to-device communication

Systems, methods, and apparatuses for initiating device-to-device (D2D) communication in wireless communication networks are provided. Based on received downlink or uplink signal qualities, a two-stage process, that is, a first stage of information request and a second stage of actual information transfer, may be used to initiate the D2D communication. Multiple thresholds, timers, and/or counters may be used in connection with the two-stage process. The two-stage process reduces unnecessary signaling overhead for initiating the D2D communication.

Systems and methods for initiating device-to-device communication in wireless networks

A temporary identifier is assigned to a discoverable user equipment (UE) in an assignment, an expiration value is assigned to the assignment, and the temporary identifier and the expiration value are associated to a long-term identifier of the discoverable UE. The temporary identifier and an indication of the expiration value are provided to the discoverable UE. The temporary identifier and an indication of the expiration value are provided to a discovering UE responsive to receipt of an inquiry including the long-term identifier of the discoverable UE The discoverable UE broadcasts the temporary identifier. If the broadcast is heard by the discovering UE, the discovering UE may identify that the broadcast is from the discoverable UE, based on the association of the long-term identifier to the temporary identifier.

Temporary identifiers and expiration values for discoverable user equipments (UEs)

A method for generating a synchronization signal is provided. The method comprises using a number other than 63 as an Nvalue in a Zadoff-Chu sequence used in generating a primary synchronization signal for a wireless communication system, which may be a 3GPP LTE system or a 3GPP LTE-A system.

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Carrollton, TX, United States of America

Joon Beom Kim