Abstract: According to an example aspect of the present disclosure, there is provided a method comprising performing with a first node beam measurement for downlink beams received with the first node from at least one second node, scheduling with the first node at least one third node for uplink transmission to the first node, determining with the first node one or more of the downlink beams that can be received simultaneously with a beam of the at least one third node based at least partially on the scheduling of the at least one third node and the performing of the beam measurement, and transmitting with the first node results of the performed beam measurement wherein the results comprise an indication of the one or more determined downlink beams that can be received simultaneously with the beam of the at least one third node.

Abstract: Methods, apparatuses, and computer programs for timing enhancement for an integrated access and backhaul node are disclosed. A method includes receiving a control element that is used to determine a timing mode and/or associated timing information for an integrated access and backhaul node; determining the timing mode and/or the associated timing information for the integrated access and backhaul node, based on the control element; and applying the timing mode and/or the associated timing information for a subsequent uplink transmission for the integrated access and backhaul node.

Abstract: An apparatus may be configured to: receive information comprising at least: an indication of a first PRACH configuration, wherein the first PRACH configuration is associated with an identifier of at least one first radio beam, and an indication of a second PRACH configuration, at least partially different from the first PRACH configuration, wherein the second PRACH configuration is associated with an identifier of at least one second radio beam, wherein the at least one second radio beam comprises, at least, a radio beam for communicating with a network node via a repeater; select a radio beam; select a PRACH configuration based, at least partially, on the received information; and transmit, to the network node, a radio access preamble on the selected radio beam according to the selected PRACH configuration.

Abstract: In accordance with example embodiments of the invention there is at least a method and apparatus to perform determining, by a first network device in a communication network, allocation information for an availability of resources in the communication network; and sending, by the network device, to a second network device the allocation information for use in at least one of simultaneous transmission by the second network device to the first network device and a third device or simultaneous reception by the second network device from the first network device and a third device of at least one operation associated with the allocation information for allocation of the resources to the third device in the in the communication network.

Abstract: Techniques for providing a multiple donor supported repeater within a communication network are disclosed. An example of such techniques includes an apparatus which establishes a control channel with a respective donor node of one or more donor nodes. The apparatus receives an indication of resource information from the one or more donor nodes via the corresponding control channel. The apparatus determines a grid of physical repeater beam channels to cover an access area based at least in part on the received indication of resource information from the one or more donor nodes. Corresponding methods and computer program products are also provided.

Abstract: Methods, apparatuses, and computer programs for timing enhancement for an integrated access and backhaul node are disclosed. A method includes receiving a control element that is used to determine a timing mode and/or associated timing information for an integrated access and backhaul node; determining the timing mode and/or the associated timing information for the integrated access and backhaul node, based on the control element; and applying the timing mode and/or the associated timing information for a subsequent uplink transmission for the integrated access and backhaul node.

Abstract: In accordance with example embodiments of the invention there is at least a method and apparatus to perform determining, by a first network device in a communication network, allocation information for an availability of resources in the communication network; and sending, by the network device, to a second network device the allocation information for use in at least one of simultaneous transmission by the second network device to the first network device and a third device or simultaneous reception by the second network device from the first network device and a third device of at least one operation associated with the allocation information for allocation of the resources to the third device in the in the communication network.

Abstract: A link adaptive orthogonal frequency-division multiplexed (OFDM) ultrasonic physical layer is provided that is capable of high data rate communication through metallic structures. The use of an adaptive OFDM subcarrier-based modulation technique mitigates the effects of severe frequency selective fading of the through-metal communication link and improves spectral efficiency by exploiting the slow-varying nature of the channel. To address the potential ill effects of peak-to-average power ratio (PAPR) and to make more efficient use of the power amplifiers in the system, the invention modifies and implements a symbol rotation and inversion-based PAPR reduction algorithm in the adaptive OFDM framework. This joint adaptive physical layer is capable of increasing data rates by roughly 220% in comparison to conventional narrowband techniques at average transmit powers of roughly 7 mW while constrained to a desired BER.

Abstract: The problems of high peak to average power ratio (PAPR) in multi-carrier systems and throughput improvement in multi-carrier systems by PAPR-aware rate adaptive bit loading are addressed by implementing two symbol rotation-inversion algorithms that reduce the peak to average power ratio in multi carrier OFDM systems jointly with rate adaptation. The method combines the benefits of bit allocation and symbol rotation to reduce the PAPR in OFDM communication systems and thus improve system range and robustness to noise. When coupled with adaptive bit loading techniques, these PAPR remediation strategies can substantially increase link throughput. Symbol rotation results in more than one order of magnitude BER reduction for SISO OFDM and one order of magnitude reduction in MIMO OFDM.

Abstract: A link adaptive orthogonal frequency-division multiplexed (OFDM) ultrasonic physical layer is provided that is capable of high data rate communication through metallic structures. The use of an adaptive OFDM subcarrier-based modulation technique mitigates the effects of severe frequency selective fading of the through-metal communication link and improves spectral efficiency by exploiting the slow-varying nature of the channel. To address the potential ill effects of peak-to-average power ratio (PAPR) and to make more efficient use of the power amplifiers in the system, the invention modifies and implements a symbol rotation and inversion-based PAPR reduction algorithm in the adaptive OFDM framework. This joint adaptive physical layer is capable of increasing data rates by roughly 220% in comparison to conventional narrowband techniques at average transmit powers of roughly 7 mW while constrained to a desired BER.