Abstract: Input bits are mapped to produce modulated symbols, and the modulated symbols can be demodulated to recover the input bits, based on a first constellation. The first constellation may be referred to as a pruned constellation, and includes constellation points that are consistent with a portion of a second constellation. That portion of the second constellation excludes a first subset of constellation points in the second constellation that are associated with lowest power and a second subset of constellation points in the second constellation that are associated with highest power. In this sense, it may be considered that the first constellation is obtained by pruning lowest power and highest power constellation points from the second constellation. Dynamic range of power associated with constellation points is smaller in the first constellation than the second constellation. Average power of constellation points may be substantially the same in the first and second constellations.

Abstract: The present disclosure relates, in part, to non-terrestrial communication systems, and in some embodiments to the integration of terrestrial and non-terrestrial communication systems. Non-terrestrial communication systems can provide a more flexible communication system with extended wireless coverage range and enhanced service quality compared to conventional communication systems. A method representative of aspects of the present application includes receiving, by an apparatus connected in a first type of sub-system, signaling to notify the apparatus to turn-on a connection to a second type of sub-system. The method further includes communicating, upon turning on the connection to the second type of sub-system, using the connection to the second type of sub-system, according to a configuration parameter associated with the type of the second type of sub-system.

Abstract: Current frame structures in Long-Term Evolution (LTE) and New Radio (NR) place some restrictions on the symbols transmitted in the frame, e.g. restrictions related to the duration of each symbol. Embodiments are disclosed in which multi-carrier symbols and/or single-carrier symbol blocks have configurable parameters, such as configurable length and/or configurable location.

Abstract: Aspects of the present disclosure provide methods and devices for enabling transmission of a pattern of pilots in a reference signal in which some of the pilot symbols are transmitted on established pilot sub-carriers and other pilot symbols are transmitted offset from the established pilot sub-carriers. This transmission pattern of pilots allows beneficial results such as 1) maintaining a low peak-to-average power ratio (PAPR) in the pilot symbols and 2) reducing resource usage for the pilot symbols as the pilot symbols have a shorter symbol length.

Abstract: A method involves processing a single carrier signal to increase the amplitude of at least some of the samples of the single carrier signal in the frequency domain, and transmitting the single carrier signal.

Abstract: A method and system are provided for scheduling data transmission in a Multiple-Input Multiple-Output (MIMO) system. The MIMO system may comprise at least one MIMO transmitter and at least one MIMO receiver. Feedback from one or more receivers may be used by a transmitter to improve quality, capacity, and scheduling in MIMO communication systems. The method may include generating or receiving information pertaining to a MIMO channel metric and information pertaining to a Channel Quality Indicator (CQI) in respect of a transmitted signal; and sending a next transmission to a receiver using a MIMO mode selected in accordance with the information pertaining to the MIMO channel metric, and an adaptive coding and modulation selected in accordance with the information pertaining to the CQI.

Abstract: The present disclosure relates to communicating low peak to average power ratio (PAPR) multiplexed signals. Signaling related to sub-sequences of a base sequence is communicated in a wireless communication network, and a multiplexed signal is transmitted and received between a first communication device and a second communication device. The multiplexed signal that multiplexes a number of signals that are based on respective ones of the sub-sequences. The sub-sequences each comprise a unique subset of non-consecutive values from the base sequence, and those values are equally spaced apart by one or more zero values and are at different positions within each of the sub-sequences. The signals comprise components that are equally spaced apart and at different positions within each of the signals such that consecutive components of the multiplexed signal comprise the components of different ones of the signals.

Abstract: Methods and systems for physical layer network coding based on two-dimensional (2D) joint coding are described. In some methods, first and second packets are obtained. A set of one or more cross-packet check blocks is generated, where each cross-packet check block is generated based on a set of cross-packet bits including at least one bit from each of the first and second packets. At least one cross-packet check block is transmitted to a first communication node.

Abstract: Methods and apparatus for communicating zero-padded signals related to zero padding of a transmission symbol that is to be transmitted in a wireless communication network. Signaling indicative of such zero padding is communicated between communication devices, and a zero-padded transmission symbol to which the zero padding has been applied, as well as a cyclic prefix preceding the zero-padded transmission symbol, are transmitted by a transmitting device and received by a receiving device. In some embodiments, the zero padding includes both head zero padding at a head of the transmission symbol and tail zero padding at a tail of the transmission symbol. Zero padding may also be applied to a reference signal sequence upon which a reference signal for channel estimation is based.

Abstract: Methods and devices utilizing artificial intelligence (AI) or machine learning (ML) for customization of a device specific air interface configuration in a wireless communication network are provided. An over the air information exchange to facilitate the training of one or more AI/ML modules involves the exchange of AI/ML capability information identifying whether a device supports AI/ML for optimization of the air interface.

Abstract: Methods and systems for two-dimensional (2D) coding are described for broadcast, multicast or groupcast applications. Two or more information code blocks (CBs) are transmitted to a plurality of intended receiving nodes. One or more cross-CB check blocks are generated, each cross-CB check block being generated based on a set of cross-CB bits, the set of cross-CB bits including at least one bit selected from each of at least two of the information CBs. At least one cross-CB check block is transmitted to at least one of the intended receiving nodes.

Abstract: Systems and methods are disclosed for providing H-ARQ transmissions in respect of a set of horizontal code blocks are combined in a code. Retransmissions contain vertical parity check blocks which are determined from verticals from the set of horizontal code blocks. Once all the vertical parity check blocks have been transmitted, a new set may be determined after performing interleaving upon either the content of the horizontal code blocks, in the case of non-systematic horizontal code blocks, or over the content of encoder input bits in the place of systematic horizontal code blocks. The interleaving may be bitwise or bit subset-wise. The retransmissions do not contain any of the original bits. In the decoder, soft decisions are produced, and nothing needs to be discarded; decoding will typically improve with each retransmission.

Abstract: A method and apparatus for managing network resources in a location based multiple access (LOMA) radio access network is provided. The method includes receiving traffic data and signal-to-noise (SNR) data from one or more LOMA wireless entities associated with the LOMA RAN, generating training data based on the received traffic data and SNR data and storing the training data, generating or updating a multi-layer LOMA map based on the training data, the multi-layer LOMA map including multiple layers, each layer including one or more LOMA zones, and each LOMA zone in an upper layer of the multi-layer LOMA map associated with one or more LOMA zones in a lower layer of the multi-layer LOMA map and transmitting the generated or updated multi-layer LOMA map to the one or more LOMA wireless entities. There is also provided methods for downlink and uplink data transmissions enabled by a multi-layer LOMA map.

Abstract: Methods and apparatuses for providing feedback in a HARQ scheme are described. A transmission-specific channel quality indicator (CQI) feedback scheme is described. A channel coding-related feedback scheme is also described.

Abstract: Methods and apparatuses for performing MIMO transmissions are described. Retransmission schemes are described for MIMO transmissions. In an example, a transmitter node obtains a plurality of packets to be transmitted to an intended receiver node over a plurality of MIMO layers. A set of one or more cross-block check blocks is generated, where the set of one or more cross-block check blocks being is using a plurality of bits selected from across two or more packets to be transmitted over respective two or more MIMO layers. The set of one or more cross-block check blocks is transmitted over one or more MIMO layers.

Abstract: A reference signaling scheme is provided that is based on the use of a Zadoff Chu sequence with cyclic repetition, optionally code division multiplexing precoding, together with frequency domain spectral shaping (FDSS). A specific pulse shape design for the FDSS part of the reference signal scheme in some embodiments involves the use of a raised cosine pulse raised to the power of ?. The new solution for generating reference signals has a Low peak average power ratio that matches the PAPR of SC-OQAM, good channel estimation performance, and the ability to implement CDM in the frequency domain to increase multiplexing gain.

Abstract: Methods and systems for two-dimensional (2D) coding are described for broadcast, multicast or groupcast applications. Two or more information code blocks (CBs) are transmitted to a plurality of intended receiving nodes. One or more cross-CB check blocks are generated, each cross-CB check block being generated based on a set of cross-CB bits, the set of cross-CB bits including at least one bit selected from each of at least two of the information CBs. At least one cross-CB check block is transmitted to at least one of the intended receiving nodes.

Abstract: Methods and devices utilizing artificial intelligence (AI) or machine learning (ML) for customization of a device specific air interface configuration in a wireless communication network are provided. An over the air information exchange to facilitate the training of one or more AI/ML modules involves the exchange of AI/ML capability information identifying whether a device supports AI/ML for optimization of the air interface.

Abstract: Disclosed are a hydroxyl-terminated polybutadiene-based polyurethane (HTPB-PU)-modified asphalt and a preparation method thereof. In the disclosure, the HTPB-PU-modified asphalt includes the following components in parts by weight: 90 parts to 97 parts of a base asphalt and 3 parts to 10 parts of HTPB-PU, where the HTPB-PU is prepared from raw materials including an isocyanate and a polyol, and the polyol includes hydroxyl-terminated polybutadiene (HTPB) with a weight percentage of not less than 80%.

Abstract: Current frame structures in Long-Term Evolution (LTE) and New Radio (NR) place some restrictions on the symbols transmitted in the frame, e.g. restrictions related to the duration of each symbol. Embodiments are disclosed in which multi-carrier symbols and/or single-carrier symbol blocks have configurable parameters, such as configurable length and/or configurable location.