Abstract: A user equipment (400) comprising a narrowband receiver (12) is configured to search among different possible narrowband allocations (16) for a narrowband carrier (14) having a specific characteristic. The narrowband receiver (12) in particular is configured to search a wideband frequency grid for a narrowband portion of a wideband carrier (20) that the narrowband carrier (14) is permitted to lie in-band with or adjacent to, to obtain one or more candidate wideband gridpoints (18). The narrowband receiver (12) prioritizes one or more of the possible narrowband allocations (16) based on their proximity to the one or more candidate wideband gridpoints (18). The narrowband receiver (12) then searches among the different possible narrowband allocations (16) for the narrowband carrier (14) having the specific characteristic, based on the specific characteristic and that prioritization.

Abstract: Systems and methods relating to a transceiver architecture that maintains legacy timing by inserting and removing a cyclic prefix at a legacy sampling rate are disclosed. In some embodiments, a system for a receiver comprises an upsampling subsystem, a cyclic prefix removal unit, and a downsampling subsystem. The upsampling subsystem is operable to process a first baseband receive signal that is at a first sampling rate to generate an upsampled baseband receive signal at a second sampling rate that is greater than the first sampling rate. The cyclic prefix removal unit is operable to remove a cyclic prefix from the upsampled baseband receive signal to provide a second baseband receive signal at the second sampling rate. The downsampling subsystem is operable to process the second baseband receive signal to generate a downsampled baseband receive signal at the first sampling rate. In this manner, complexity and power consumption are reduced.

Abstract: The present disclosure relates to a first radio node (300) configured for orthogonal frequency division multiplexing (OFDM), comprising a receiver (310), a transmitter (320), a processor (330) and a memory (340) storing instructions executable by the processor (330) for causing the transmitter (320) in a first mode of operation with a first subcarrier spacing f1: to transmit a sequence of prefixed OFDM symbols, and in a second mode of operation with a second subcarrier spacing f2: to transmit a sequence of prefixed OFDM symbols, wherein the sequence of transmitted OFDM symbols is aligned with a predefined repeating radio frame, which is common to both the first and second modes of operation, or with an integer multiple of the predefined repeating radio frame; and the first and second subcarrier spacings are related by an integer factor, f1/f2=p or f1/f2=1/p, with p?1 integer.

Abstract: There is provided mechanisms for configuring a UE. A base station is configured to configure the UE with a LC-PDCCH repetition level range selected from an ordered set of LC-PDCCH repetition level ranges using RRC signalling. The base station is configured to select a LC-PDCCH repetition level from the configured LC-PDCCH repetition level range for a transport block transmission to the UE. The UE is configured to receive the LC-PDCCH repetition level range as configuration information from the base station and using RRC signalling. The UE is configured to attempt decoding the LC-PDCCH according to at least one value in the configured LC-PDCCH repetition level range.

Abstract: Systems and methods relating to decoding a downlink channel that utilizes repetitions and, in particular, decoding the downlink channel when the number of repetitions utilized for transmission of the downlink channel is unknown. In some embodiments, a method of operation of a User Equipment device (UE) in a cellular communications network comprises identifying a Signal to Interference plus Noise (SINR) value for a signal received by the UE from a radio access node of the cellular communications network, identifying a number of repetitions estimated to be used for transmission of a downlink channel from the radio access node based on the SINR value, and attempting to decode the downlink channel based on the number of repetitions estimated to be used for transmission of the downlink channel from the radio access node.

Abstract: Systems and methods relating to a transceiver architecture that maintains legacy timing by inserting and removing a cyclic prefix at a legacy sampling rate are disclosed. In some embodiments, a system for a receiver comprises an upsampling subsystem, a cyclic prefix removal unit, and a downsampling subsystem. The upsampling subsystem is operable to process a first baseband receive signal that is at a first sampling rate to generate an upsampled baseband receive signal at a second sampling rate that is greater than the first sampling rate. The cyclic prefix removal unit is operable to remove a cyclic prefix from the upsampled baseband receive signal to provide a second baseband receive signal at the second sampling rate. The downsampling subsystem is operable to process the second baseband receive signal to generate a downsampled baseband receive signal at the first sampling rate. In this manner, complexity and power consumption are reduced.

Abstract: A user equipment (12) is configured to determine a length-6 phase coefficient sequence that is one of multiple unique length-6 phase coefficient sequences in a defined set (18). The length-6 phase coefficient sequences in the defined set (18) include at least: {1, 1, 1, 1, 3, ?3} and {?3, 3, ?3, 1, 1, ?3}; or {?1, ?1, ?1, 3, ?3, ?1} and either {3, ?3, 3, ?1, 3, 3} or {1, 3, 1, ?1, ?1, 3}. The user equipment (12) is also configured to generate a quadrature phase shift keying, QPSK-based sequence that comprises a sequence of QPSK symbols whose respective phases are based on the determined phase coefficient sequence. The user equipment (12) is further configured to generate a reference signal (16) using the generated QPSK-based sequence, and transmit the generated reference signal (16) to a network node (14) in a wireless communication system (10).

Abstract: A method in a network node includes communicating, over a narrowband Internet of Things downlink, a first message to a first wireless device during repetition periods of at least a first time frame and a second time frame of a plurality of time frames of a transmission time of a narrowband physical downlink control channel (NB-PDCCH) or a narrowband physical downlink shared channel (NB-PDSCH). Each time frame of the plurality of time frames includes a repetition period and a gap. The method also includes communicating a second message to a second wireless device during a gap of the first time frame.

Abstract: A radio network node (10) is configured to transmit a narrowband primary synchronization signal (NB-PSS) and a narrowband secondary synchronization signal (NB-SSS) within a synchronization signal period comprising multiple frames. The radio network node (10) maps the NB-PSS to the same one or more subframes within each frame in which the NB-PSS is to be transmitted. The radio network node (10) also maps the NB-SSS to the same one or more subframes within each frame in which the NB-SSS is to be transmitted, including at least one frame in which the NB-PSS is to be transmitted. The radio network node (10) does so by mapping the NB-SSS to one or more subframes that differ from the one or more subframes to which the NB-PSS is mapped. The radio network node (10) transmits the NB-PSS and NB-SSS within the synchronization signal period according to this mapping.

Abstract: A user equipment (UE) is provided. The UE includes processing circuitry configured to rotate a symbol of a plurality of symbols for transmission. An amount of rotation of the symbol of the plurality of symbols is based on at least one of a cyclic prefix length of the symbol of the plurality of symbols and position of a subcarrier on which the symbol of the plurality of symbols is to be transmitted. The UE includes a transmitter configured to cause transmission of the plurality of symbols.

Abstract: An example method in a user equipment comprises generating a random access preamble signal and transmitting the random access preamble signal. This generating of the random access preamble signal comprises generating a Single-Carrier Frequency-Division Multiple Access (SC-FDMA) random access preamble signal comprising two or more consecutive preamble symbol groups, each preamble symbol group comprising a cyclic prefix portion and a plurality of identical symbols occupying a single subcarrier of the SC-FDMA random access preamble signal. The single subcarrier for at least one of the preamble symbol groups corresponds to a first subcarrier frequency and the single subcarrier for an immediately subsequent one of the preamble symbol groups corresponds to a second subcarrier frequency.

Abstract: A user equipment configured for use in a wireless communication system is configured for transmitting a random access preamble signal. The wireless communication device in particular is configured to generate a random access preamble signal that comprises multiple symbol groups, with each symbol group on a single tone during a different time resource, according to a frequency hopping pattern that hops the random access preamble signal from at least one of the symbols groups to an adjacent symbol group over a fixed frequency distance and hops the random access preamble signal from at least one of the symbols groups to an adjacent symbol group over a pseudo random frequency distance. Each symbol group comprises one or more symbols. The user equipment is also configured to transmit the random access preamble signal.

Abstract: A user equipment configured for use in a wireless communication system is configured for transmitting a random access preamble signal. The wireless communication device in particular is configured to generate a random access preamble signal that comprises multiple symbol groups, with each symbol group on a single tone during a different time resource, according to a frequency hopping pattern that hops the random access preamble signal from at least one of the symbols groups to an adjacent symbol group over a fixed frequency distance and hops the random access preamble signal from at least one of the symbols groups to an adjacent symbol group over a pseudo random frequency distance. Each symbol group comprises one or more symbols. The user equipment is also configured to transmit the random access preamble signal.

Abstract: An example method in a user equipment comprises generating a random access preamble signal and transmitting the random access preamble signal. This generating of the random access preamble signal comprises generating a Single-Carrier Frequency-Division Multiple Access (SC-FDMA) random access preamble signal comprising two or more consecutive preamble symbol groups, each preamble symbol group comprising a cyclic prefix portion and a plurality of identical symbols occupying a single subcarrier of the SC-FDMA random access preamble signal. The single subcarrier for at least one of the preamble symbol groups corresponds to a first subcarrier frequency and the single subcarrier for an immediately subsequent one of the preamble symbol groups corresponds to a second subcarrier frequency.

Abstract: A user equipment (UE) is provided. The UE includes processing circuitry configured to rotate a symbol of a plurality of symbols for transmission. An amount of rotation of the symbol of the plurality of symbols is based on at least one of a cyclic prefix length of the symbol of the plurality of symbols and position of a subcarrier on which the symbol of the plurality of symbols is to be transmitted. The UE includes a transmitter configured to cause transmission of the plurality of symbols.

Abstract: A method and a wireless communication device (110) for handling paging messages for paging of wireless communication devices as well as a method and a radio network node (120) for managing paging requests for instructing the radio network node (120) to page wireless communication devices are disclosed. The radio network node (120) adds (A030) one or more received paging requests to a queue of paging requests and generates (A040) a first paging message and a parameter indicating existence of at least one second paging occasion. The radio network node (120) sends (A050), at a first paging occasion, the first paging message and sends (A055) the parameter to the wireless communication device (110). The wireless communication device receives (A060), at the first paging occasion, the first paging message and receives (A065) the parameter. The radio network node (120) generates (A070) a second paging message and sends (A080), at the second paging occasion, the second paging message.

Abstract: Methods and apparatus are disclosed for enabling a narrowband MTC device to operate in a legacy LTE system having a wider system bandwidth. The physical downlink control channel for a narrow-band MTC device, also referred to as low-complexity physical downlink control channel (LC-PDCCH), has reduced bandwidth resource and can support no more than 6 physical resource blocks. The present application discloses how to allocate physical resource blocks (PRBs) for LC-PDCCH and physical downlink shared channel (PDSCH). The PRB allocation methods disclosed herein allow the MTC devices to derive the frequency location of the PDSCH PRBs from the frequency location of the LC-PDCCH PRBs and to soft-combine LC-PDCCH transmissions and PDSCH transmissions for performance improvement.

Abstract: An example method in a user equipment comprises generating a random access preamble signal and transmitting the random access preamble signal. This generating of the random access preamble signal comprises generating a Single-Carrier Frequency-Division Multiple Access (SC-FDMA) random access preamble signal comprising two or more consecutive preamble symbol groups, each preamble symbol group comprising a cyclic prefix portion and a plurality of identical symbols occupying a single subcarrier of the SC-FDMA random access preamble signal. The single subcarrier for at least one of the preamble symbol groups corresponds to a first subcarrier frequency and the single subcarrier for an immediately subsequent one of the preamble symbol groups corresponds to a second subcarrier frequency.

Abstract: An approach is provided to support resource allocation of broadcast or paging control channels. It is determined whether resource is allocated for a logical control channel. One or more fields of a physical downlink control channel is defined to signal the resource allocation for the logical control channel. The physical downlink control channel has a first format to support transmission of data over a downlink channel, and a second format that includes the one or more fields to support allocation of the logical control channel.

Abstract: In accordance with an embodiment of the present invention, an apparatus, comprising a processor configured to determine a total number of soft channel bits, a first number associated with hybrid automatic retransmit request processes and a second number associated with hybrid automatic retransmit request processes; and the processor further configured to select a size of a soft buffer memory partition based at least in part on the total number of soft channel bits, the first number associated with hybrid automatic retransmit request processes and the second number associated with hybrid automatic retransmit request processes, is disclosed.