Abstract: A method and apparatus is disclosed herein for channel state information dissemination for multi-user (MU) multiple-input multiple-output (MIMO) (MU-MIMO) transmission schemes based on outdated channel state information.

Abstract: Systems and methods relating to a narrowband Primary Synchronization Signal (NB-PSS) and a narrowband Secondary Synchronization Signal (NB-SSS) are disclosed. In some embodiments, a base station in a wireless network comprises a processor and storage that stores instructions executable by the processor whereby the base station is operable to transmit a NB-PSS and a NB-SSS in a narrowband portion of a downlink system bandwidth. The NB-PSS and the NB-SSS are transmitted such that more than two occurrences of the NB-PSS and more than two occurrences of the NB-SSS are transmitted over a defined time interval, each occurrence of the NB-PSS is transmitted over multiple contiguous Orthogonal Frequency Division Multiplexing (OFDM) symbols and each occurrence of the NB-SSS is transmitted over multiple contiguous OFDM symbols, and each occurrence of the NB-SSS provides an indication of a location of the occurrence of the NB-SSS within the defined time interval.

Abstract: A method and apparatus is disclosed herein for channel state information dissemination for multi-user (MU) multiple-input multiple-output (MIMO) (MU-MIMO) transmission schemes based on outdated channel state information.

Abstract: A method and apparatus is disclosed herein for channel state information dissemination for multi-user (MU) multiple-input multiple-output (MIMO) (MU-MIMO) transmission schemes based on outdated channel state information.

Abstract: In certain embodiments, a method in a network node comprises generating a synchronization signal using a set of sequences in a single part of a synchronization channel. The set of sequences is configured to allow one or more wireless devices to determine a cell identity and a slot identity during synchronization with the network node. The method also comprises transmitting the generated synchronization signal to the one or more wireless devices.

Abstract: A method in a node comprises receiving a signal, and collecting a first set of sequences corresponding to a first piece of cellular information and a second set of sequences corresponding to a second piece of cellular information over multiple frames of the received signal, wherein the second piece of cellular information is encoded based at least in part on the first piece of cellular information. The method further comprises processing the first set of sequences corresponding to the first piece of cellular information to determine the first piece of cellular information, and processing, using the determined first piece of cellular information, the second set of sequences corresponding to the second piece of cellular information to determine the second piece of cellular information simultaneously with the determination of the first piece of cellular information.

Abstract: A method in a node is disclosed. The method comprises receiving a signal, and obtaining a first oversampled received signal by sampling the received signal according to a symbol rate. The method further comprises estimating a first frequency offset based on the first oversampled received signal, the first frequency offset estimated using an estimation range limited to one of a bandwidth of the received signal or the symbol rate of the received signal, and obtaining a second oversampled received signal by sampling the received signal according to N times the symbol rate, wherein N is greater than 1. The method further comprises estimating a true frequency offset based on the first frequency offset estimate and the second oversampled received signal.

Abstract: A method in a wireless device is disclosed. The method comprises receiving a synchronization signal from a network node, the received synchronization signal comprising a synchronization sequence, a cell ID sequence, and a frame index indication sequence. The method further comprises estimating a time offset of the received synchronization signal using the synchronization sequence, and estimating a frequency offset of the received synchronization signal using the synchronization sequence. The method further comprises detecting a cell ID of a cell associated with the network node using the estimated time offset and the estimated frequency offset, and detecting a frame number using the estimated time offset, the estimated frequency offset, and the detected cell ID of the cell associated with the network node.

Abstract: A method and apparatus is disclosed herein for channel state information dissemination for multi-user (MU) multiple-input multiple-output (MIMO) (MU-MIMO) transmission schemes based on outdated channel state information.

Abstract: A method and apparatus is disclosed herein for scheduling and MU-MIMO transmission based on outdated channel state information. In one embodiment, the multi-user (MU)-MIMO wireless communication system has a multi-antenna transmitter and L user terminals, and the method comprises scheduling a pair of user packets for a round-2 transmission to form one MAT session using outdated channel state information at the transmitter (CSIT), including a first packet destined for a first user terminal and a second packet destined for a second user terminal, based on knowledge of user channels from transmissions to some or all L user terminals into and based on a utility function, combining eavesdropped observations from two of the plurality of round-1 transmissions, the eavesdropped observations including information indicative of round-1 eavesdropped channels feedback from the first and second user terminals, and transmitting the combined observations of the pair of user packets as part of the round-2 transmission.

Abstract: A method and apparatus is disclosed herein for scheduling and MU-MIMO transmission based on outdated channel state information. In one embodiment, the multi-user (MU)-MIMO wireless communication system has a multi-antenna transmitter and L user terminals, and the method comprises scheduling a pair of user packets for a round-2 transmission to form one MAT session using outdated channel state information at the transmitter (CSIT), including a first packet destined for a first user terminal and a second packet destined for a second user terminal, based on knowledge of user channels from transmissions to some or all L user terminals into and based on a utility function, combining eavesdropped observations from two of the plurality of round-1 transmissions, the eavesdropped observations including information indicative of round-1 eavesdropped channels feed-back from the first and second user terminals, and transmitting the combined observations of the pair of user packets as part of the round-2 transmission.