Abstract: Embodiments of the present disclosure relate to contention resolution in random access procedure. An apparatus transmits a random access request to a further apparatus, and the random access request comprises a random access preamble and an identifier of the apparatus for a random access procedure. The apparatus then receives, from the further apparatus, control information on a control channel addressed to the identifier, and the control information indicates at least one of a resource and timing information for communication between the apparatus and the further apparatus. Next, the apparatus determines a result of the random access procedure based at least in part on the control information.

Abstract: Various arrangements for compensating for Doppler shift on a non-terrestrial orthogonal frequency division multiplex (OFDM) network are presented. A received frequency of a downlink satellite message received from a satellite may be determined. A downlink frequency delta between an expected frequency of the downlink satellite message and the received frequency of the downlink satellite message can be calculated. An uplink frequency delta based on the calculated downlink frequency delta may be calculated. An uplink transmission frequency at which an uplink OFDM symbol is transmitted may be calculated based on the calculated uplink frequency delta.

Abstract: In accordance with an example embodiment of the present invention, a method comprising: receiving, by a user equipment of a communication network, information comprising a random access channel configuration and a number of cycled beams; determining a number of random access channel occasions for a random access channel occasion group; transforming synchronization signal blocks to a beam index given the number of cycled beams and associating beams with the number of random access channel occasions of the random access channel occasion group; identifying a random access channel occasion group associated with the beam index; selecting at least one preamble associated with the beam index in the random access channel occasion group; and transmitting the at least one preamble within each of the number of random access channel occasions of the random access channel occasion group to perform a random access channel procedure.

Abstract: Provided is a method and apparatus for performing a random access procedure. A wireless device may transmit a random access preamble and may monitor for a random access response. The wireless device may determine to transmit a second random access preamble or to transmit uplink data responsive to the random access response. A time for preparing the second random access preamble may be determined based on a subcarrier spacing associated with the random access preamble or a subcarrier spacing associated a downlink channel associated with the random access response. A time for preparing the uplink data may be determined based on a subcarrier spacing associated with the uplink data or a subcarrier spacing associated a downlink channel associated with the random access response.

Abstract: A user equipment (UE) can transmit a beam failure recovery request using contention-based physical random access channel (PRACH) resources to supplement and/or replace non-contention-based resources for transmitting the beam failure recovery request. The UE can reduce beam recovery latency by informing its intention for beam failure recovery by transmitting a beam failure recovery request during the random access channel (RACH) procedure. The base station may dedicate a set of RACH resources that can be used for both transmitting regular contention-based RACH messages and beam failure recovery request.

Abstract: A wireless local area network (WLAN) station (STA) reports, with a medium access control (MAC) frame, a buffer status of an urgent traffic identifier (TID) to a second STA. In some embodiments, the second STA is also an access point (AP). The delay in reporting is reduced by providing a buffer status report for the urgent TID in a data frame being transmitted to carry data for a current TID. The buffer status report, in some embodiments, provides the value of the urgent TID. In some embodiments, the buffer status report provides an indication of the amount of data in a buffer corresponding to the urgent TID. In some embodiments, the buffer status report is based on an aggregated measure of more than one buffer with data awaiting transmission. The transmission of the MAC frame, in some embodiments, is unsolicited.

Abstract: Methods, systems, and devices related to reducing out-of-band emissions for Orthogonal Frequency-Division Multiplexing (OFDM) technology are described. In one representative aspect, a method for wireless communication includes obtaining N groups of spread data by multiplying N groups of data with N spreading codes, combining the N groups of spread data into a data sequence, modulating the data sequence onto 2K subcarriers, and transmitting the modulated data sequence. In particular, an individual spreading code of the N spreading codes comprises 2K elements organized as a sequence of K pairs, wherein the pairs comply with at least one of (1) two elements in a pair have a 180-degree phase difference or (2) corresponding elements in neighboring pairs have a 180-degree phase difference. N and K are integers greater than 1 and N is less than 2K.

Abstract: This disclosure provides an information transmission method and a communications device. The method includes: when determining that higher layer signaling is not configured with a scrambling identifier, scrambling or descrambling, by a communications device, data by using a second initial scrambling value, where the scrambling identifier is used by the communications device to determine a first initial scrambling value used for data scrambling or descrambling, and the second initial scrambling value is related to at least one or two of a cell identifier, a radio network temporary identifier, and a reserved bit. Therefore, in the embodiments of this disclosure, when determining that the higher layer is not configured with the scrambling identifier, the communications device scrambles or descrambles the data by using the second initial scrambling value. This resolves a problem in the prior art that a terminal device cannot determine an initial scrambling value used for data scrambling.

Abstract: The disclosure provides a method and a device in a User Equipment (UE) and a base station for wireless communication. UE transmits first information, the first information being used for determining a first reference signal, then the UE receives second information in a first frequency subband in a first time window and detects third information in a second frequency subband in a second time window; the first time window is related to time-domain resources occupied by the first information; a first antenna port is used for transmitting the first reference signal, each antenna port used for transmitting the second information is spatially related to the first antenna port, and each antenna port used for transmitting the third information is spatially related to the first antenna port. The disclosure simplifies the processes of beam link failure judgement and beam management for a UE, thereby improving the overall performance of the system.

Abstract: Embodiments provide efficient multicast handover for content delivery to client devices in multi-carrier communications systems. For example, client devices in a transport craft can consume a media channel offering via a first carrier during transport through the communications system. Embodiments can establish respective multicast groups for the media channel offering in at least the first carrier and a subsequent second carrier, and can notify the craft of the multicast groups prior to the craft being serviced by the second carrier. Such pre-notification can permit multicast handover of the media channel offering from the first carrier to the second carrier in a manner that avoids typical handover-related. For example, embodiments can direct multicast delivery of the media channel offering to the craft in accordance with the first multicast group while being serviced by the first carrier and in accordance with the second multicast group while being serviced by the second.

Abstract: Methods, systems, and devices for wireless communications are described that support channel quality reporting using random access messages. A user equipment (UE) may receive a random access message from a base station and respond with an indication of channel quality information for a communication link between the base station and the UE. The indication may be generated by a single protocol layer of a control plane protocol stack (e.g., a radio resource control (RRC) or media access control (MAC) layer). The channel quality information may be included in the RRC message or in a header of the MAC layer from the UE. The UE may transmit, to the base station, an indication of identified channel quality information. Upon receiving the response message from the UE, the base station may determine communication parameter(s) (e.g., coding rate, modulation order, number of repetitions of a channel) for future communications with the UE.

Abstract: A method executed by a first base station in this application includes: determining target pilot ports and a coordinating cell of a target cell, where the coordinating cell is a cell that jointly sends, with the target cell, channel state information-reference signals CSI-RSs of the target cell, the target pilot ports are pilot ports used to jointly send the CSI-RSs of the target cell, and the target pilot ports include a pilot port of the target cell and a pilot port of the coordinating cell; determining a resource location of a target time-frequency resource, where the target time-frequency resource is a time-frequency resource used to send the CSI-RSs of the target cell; and sending the CSI-RSs of the target cell to a terminal based on the target time-frequency resource, where signal strength of the terminal is lower than a preset threshold.

Abstract: This disclosure describes systems, methods, and devices related to an extreme high throughput (EHT) signaling structure. A device may establish a communication channel with one or more station devices (STAs). The device may generate an extreme high throughput signal field (EHT-SIG) of a header, wherein the EHT-SIG field comprises information associated with resource allocations (RUs). The device may generate a frame comprising the header. The device may assign a first RU to a first station device. The device may assign a second RU to the first station device, wherein the first RU or the second RU is an aggregation of a 26-tome RU and a neighboring RU. The device may cause to send the frame to the first station device.

Abstract: Embodiments described herein provide a method for providing a compatible backplane operation mechanism for 2.5-gigabit Ethernet. A first input of data including a first sequence-ordered set in compliance with a first interface protocol is received from a medium access control (MAC) layer. The first input of data is encoded into four outputs of encoded data including a second sequence-ordered set in compliance with a second interface protocol. The first sequence-ordered set in a first form of a sequence code followed by three bytes of data is mapped to the second sequence-ordered set in a second form of consecutive units of the sequence code followed by an encoded data byte. The four parallel outputs of encoded data are serialized into a serial output. The serial output to a linking partner is transmitted on a physical layer of an Ethernet link at a speed specified in the second interface protocol.

Abstract: Aspects of the subject disclosure may include, for example, providing a request associated with a call session to a server, wherein the request includes capability information associated with user equipment. A codec is identified according to the capability information to obtain an identified codec, which facilitates media service to the user equipment. The media service is accessed from a media resource function, which in turn, is accessed by the server responsive to the identified codec. An operable resource identifier is identified responsive to a search of a codec table, wherein the server accesses the operable resource identifier associated with the media resource function from a domain name server responsive to the resource identifier not being available at the codec table. Other embodiments are disclosed.

Abstract: Techniques for signaling dynamic control region for PRACH transmission are described. In an aspect, the disclosure describes a method for receiving, at a user equipment (UE), an indication of a number of control symbols that the UE is to assume when transmitting physical random access channel (PRACH), and transmitting, by the UE, the PRACH over one or more slots based on the number of control symbols. In another aspect, the disclosure describes a method for generating, at a network device, an indication of a number of control symbols that a UE is to assume when transmitting PRACH, transmitting, by the network device, the indication to the UE. A UE and network device configuration as well as apparatuses and computer-readable medium related to these methods are also described.

Abstract: A wireless communication method and device are provided. The method comprises the following operations. A terminal device sends first information to a network device. The first information indicates a switching mode supported by the terminal device and/or a performance parameter value corresponding to the supported switching mode, the switching mode indicates a manner in which the terminal device switches from one transmission mode to another transmission mode, and the transmission mode indicates the number of transmitters and the number of receivers used by the terminal device.

Abstract: In accordance with one or more embodiments, a transmission device operates by: generating a transmit signal conveying transmit data in accordance with an HARQ protocol; converting the transmit signal to transmitted guided electromagnetic waves that propagate along a surface of a transmission medium; converting to a receive signal received guided electromagnetic waves that propagate along the surface of the transmission medium; generating, based on the receive signal, corona discharge data that indicates a corona discharge in proximity to the transmission medium during a first time period; identifying, responsive to the corona discharge data, a first packet of the transmit signal that was converted to transmitted guided electromagnetic waves during the first time period; and regenerating the transmit signal to include the first packet for retransmission via the transmitted guided electromagnetic waves, without waiting for a repeat request to be received from the remote device indicating the first packet.

Abstract: A beam selection method, a base station, and a user equipment are presented. The beam selection method performed by the base station includes: receiving transmission beam group information on the base station and information on receiving capability of a receiving set of a user equipment corresponding to each transmission beam group fed back by the user equipment, where the information on receiving capability of the receiving set is the number of reception beams that the user equipment can simultaneously form in the receiving set; and selecting transmission beams corresponding to the receiving set and used for transmitting information to the user equipment based at least in part on the transmission beam group information and the information on receiving capability of each receiving set.

Abstract: A method of operating an infrastructure equipment in a wireless communications system to support first and second random access procedures is provided, wherein a number of subcarriers used for an uplink message of the second random access procedure is smaller than a number of subcarriers used for a corresponding uplink message of the first random access procedure. The method comprises transmitting, to at least one communications device, a scheduling message comprising an indication of a first set of radio resources comprising a plurality of subcarriers to be used for a random access procedure message for the first random access procedure, determining a second set of radio resources to be used for a random access procedure message for the second random access procedure, and monitoring for a random access procedure message from the at least one communications device on the second set of radio resources.