Device-to-device (D2D) communications between user equipment (UE) allows two UEs in a long-term evolution (LTE) network to communicate directly with each other without the need to first send their communications to a network (such as via an evolved node B). In order to communicate in a D2D mode, the UEs first need to discover each other. One method of allowing the UEs to discover each other involves the use of a physical uplink control channel (PUCCH). After a network determines that certain UEs would benefit from D2D communication, the UEs can be set up to send and receive discovery signals using the PUCCH.

A control network communication arrangement includes a second protocol embedded into a first protocol in a way that modules supporting the second protocol may be aware of and utilize the first protocol whereas modules supporting only the first protocol may not be aware of the second protocol. Operation of modules using the second protocol does not disturb operation of the modules not configured to use or understand the second protocol. By one approach, the messages sent using the second protocol will be seen as messages sent using the first protocol but not having a message necessary to understand or as needing a particular response. In another approach, modules using the second protocol can be configured to send messages within a CAN message frame without being compatible with CAN.

Generally discussed herein are systems and apparatuses that can implement Physical Cell Identity assignments that reduce collision or confusion of small cell identities at User Equipment and techniques for using the same. According to an example apparatus a device can be configured to estimate a location of the small cell eNodeB based on at least one of Global Positioning System (GPS) coordinates of the location of the small cell eNodeB and an RSRP measured at the small cell eNodeB, determine if the location of the small cell eNodeB is within a first region or a second region of a large cell transmission area, wherein the first and second regions do not overlap, and in response to determining which region the small cell eNodeB is deployed in, assign a PCI code from a respective group of available PCI codes to the small cell eNodeB.

A gap detector detects when a phase difference between a feedback signal and a clock signal is larger than a gap threshold. If the phase difference is larger than the gap threshold, then the phase difference is modified by subtracting a gap value from the phase difference. If the phase difference is less than the threshold, the phase difference is not modified. A loop filter receives and filters the modified or unmodified phase difference and controls an oscillator. An accumulator circuit accumulates the modified phase difference and supplies a phase adjust signal. A low pass filter receives the phase adjust signal and supplies a filtered phase adjust signal that is used to slowly adjust the output of the oscillator.

Embodiments of a system and method for reporting uplink control information (UCI) are generally described herein. In some embodiments, a first and second component carrier (CC) is provided for a user equipment (UE). The first and second CC are configured with transmission mode (TM) 10 and TMs 1-9, respectively. A first channel state information (CSI) report for the first CC with TM 10 and a second CSI report for the second CC with at least one of TMs 1-9 are scheduled for transmission in a subframe. A collision is detected between the first and second CSI reports. Priority is assigned to the first CSI report or the second CSI report based on a prioritization parameter. The prioritized CSI report is transmitted based the prioritization parameter.

Embodiments for providing fast modulation and coding scheme adaptation for LTE regardless of transmission using single-user multiple-input and multiple-output (SU-MIMO) or multiple-user multiple-input and multiple-output are generally described herein. In some embodiments, channel state information reference signals are sent to user equipment by a node. First channel quality indication feedback based on the channel state information reference signals is received from the user equipment. Physical downlink shared channel data and demodulation reference signals are transmitted using a first modulation and coding scheme based on the first channel quality indication feedback. Second channel quality indication feedback based on measurements performed by the user equipment on the demodulation reference signals is received by a node. Physical downlink shared channel data is transmitted using a second modulation and coding scheme based on the second channel quality indication feedback.

Embodiments for boosting coverage of wireless signals are generally described herein. A wireless communication device for boosting coverage of wireless signals may include a processor arranged to configure resource blocks for a sub-frame for transmitting data in a communication session, wherein the sub-frame includes at least one slot formed by a matrix of sub-carriers in the frequency domain and symbols in the time domain and a transceiver, coupled to the processor, the transceiver being arranged to establish communication with entities in a network, the transceiver being further arranged to, under direction of the processor, map modulated symbols to at least a partial resource block to form a coverage boosting resource unit, the coverage boosting resource unit spreading at least one data bit over at least the partial resource block.

Embodiments of system, device, and method configurations for managing inter-radio access technology (inter-RAT) mobility of handovers between a UMTS Terrestrial Radio Access Network (UTRAN) or GSM EDGE Radio Access Network (GERAN) and an evolved UMTS Terrestrial Radio Access Network (E-UTRAN) to avoid scenarios of in-device coexistence (IDC) interference are disclosed herein. In one example, the existence and types of IDC interference with an E-UTRAN Long Term Evolution (LTE)/Long Term Evolution-Advanced (LTE-A) network are determined and communicated to the UTRAN/GERAN in an IDC indication signal. The IDC indication signal may communicate the existence and type of IDC interference occurring at user equipment, such as between licensed LTE/LTE-A and unlicensed industrial scientific medical (ISM) radio frequency bands. Accordingly, the UTRAN/GERAN may use information provided from the IDC indication signal to prevent a handover to the E-UTRAN that would result in IDC interference.