Abstract: An example method determines a plurality of traffic sections for a geographical traffic area, each traffic section including a road segment and vehicle(s) traveling on the road segment; monitors a responsive vehicle rate for a first traffic section of the plurality of traffic sections; and assigns, based on the responsive vehicle rate of the first traffic section, the first traffic section to one of a first section server dedicated to manage the first traffic section and a remote management server capable of managing the plurality of traffic sections of the geographical traffic area, the first section server comprising computing device(s) of responsive vehicle(s) in the first traffic section.

Abstract: The invention discloses a method for a cellular communications system, in which traffic is sent in frames, each frame comprising a first number of subframes, with a second number of said subframes being available for at least either uplink or downlink traffic. At least one of said second number of subframes is made to comprise at least three parts, as follows: One part which is utilized for uplink traffic, One part which is utilized for downlink traffic, One part which is utilized as a guard period, with said guard period part being scheduled between the uplink and the downlink parts. The duration of at least two of said three parts may be varied to fit the current system need.

Abstract: This application provides a wireless communication method and an apparatus. The method includes: receiving higher layer signaling from a base station; receiving a broadcast message from the base station; and sending a random access preamble to the base station based on a random access configuration, where a time resource available to the random access preamble includes a part or all of a flexible time resource. Therefore, a random access requirement of a cell-edge terminal can be met, and a problem of PRACH coverage limitation can be resolved.

Abstract: An apparatus is described, comprising circuitry to obtain base station location information for a plurality of base stations that provide a wireless network for communication with a moving vehicle, the plurality of base stations comprising a current base station and one or more other base stations, circuitry to obtain moving vehicle tracking information for the moving vehicle, circuitry to determine, based on the moving vehicle tracking information and the base station location information, transmission adjustment control information associated with each other base station, and an interface configured to transmit, for reception by the moving vehicle, the transmission adjustment control information associated with at least a selected other base station, to enable the moving vehicle to adjust a signal transmitted to the selected other base station when a handover procedure is performed to transition communication with the moving vehicle from the current base station to the selected other base station.

Abstract: The voter circuit and method determines a voted output among plural inputs each carrying circular data. To supply the voted output, a statistical average (e.g., mean or median) is computed by grouping the plural inputs into pairs, and for each pair generating a minimum angular difference by selecting the minimum of (a) the absolute difference between the pairs of inputs, and (b) the conjugate of the absolute difference between the pairs of inputs. The voted output is a statistical average generated from the minimum angular difference.

Abstract: Embodiments of this application disclose a signal transmission method, a related device, and a system. The method may include: receiving first indication information sent by a network device, where the first indication information is used to indicate an uplink resource that is allocated by the network device to a terminal in a first bandwidth; the resource indicated by the first indication information includes an integer quantity of resource blocks evenly distributed in a part or all of the first bandwidth; performing uplink transmission in a detected idle second bandwidth; and sending second indication information to the network device, where the second indication information is used to indicate the second bandwidth. This solution can support flexible bandwidth transmission, and can better adapt to a multi-bandwidth scenario supported by a next-generation new radio technology.

Abstract: A mechanism capable of more appropriately performing antenna switching is provided. A communication device includes: a plurality of antenna panels (60) that each includes one or more antennas (51), one or more transmission analogue circuits (54) for transmitting a signal by using the antenna, and one or more reception analogue circuits (55) for receiving a signal by using the antenna; and a control section (240) that controls, on the basis of indication from a base station, the antenna panel in which antenna switching for switching of connection between the antenna and the transmission analogue circuit is to be performed among a plurality of the antenna panels, and a first resource on which the antenna switching in the corresponding antenna panel is to be performed.

Abstract: The present invention provides a base station apparatus, a terminal apparatus, and a communication method, which are capable of throughput improvement. A base station apparatus that communicates with a terminal apparatus, includes a higher layer processing unit that configures a CSI process that is a configuration relating to reporting of a channel state information (CSI), for the terminal apparatus for which a prescribed transmission mode is configured, in which the CSI process includes a configuration of a CSI reference signal and a configuration relating to two different code books.

Abstract: The invention refers to a transmitter that emits data in the form of a group of at least two partial telegrams that together include the data and that are shorter than an individual telegram comprising the data. The transmitter emits the group of partial telegrams according to a hopping pattern that refers to times and/or transmission frequencies of the emission of the individual partial telegrams. Furthermore, the transmitter emits the group of partial telegrams several times and at least twice. Furthermore, the invention relates to a receiver and corresponding methods.

Abstract: Facilitating mobility as a service in advanced networks (e.g., 5G, 6G, and beyond) is provided herein. Operations of a method can comprise evaluating, by a system comprising a processor, a group of characteristics of a device. The method also can comprise enabling, by the system, a mobility management function as a mobility microservice. Further, the method can comprise activating, by the system, microservices of a group of microservices, comprising the mobility microservice, based on the group of characteristics of the device.

Abstract: A relay node receives a data block containing multiplexed data streams intended for multiple user equipment (UE) devices being served by the relay node. The relay node extracts the data streams from the data block and allocates them each to a separate narrowband channel that is associated with a particular UE device. The relay node repeatedly transmits the narrowband channels to the UE devices in a broadcast transmission that is transmitted for a predetermined number of repetitions. Each UE device decodes their own respective narrowband channel to obtain the data stream intended for the UE device associated with a particular narrowband channel. A feedback mechanism is utilized by the relay node to determine whether to retransmit a data packet or a new data packet in subsequent broadcast transmissions.

Abstract: Aspects of the present disclosure relate to receiving, at a first node and from a second node configured for full-duplex wireless communications, a signal indicating an interference floor for receiving signals at the second node, wherein the interference floor is based on interference caused by a transmitter of the second node, determining, by the first node and based at least in part on the interference floor, a modulation and coding scheme (MCS) for transmitting one or more signals to the second node, and transmitting, by the first node and based on the MCS, the one or more signals to the second node.

Abstract: This application discloses a service data transmission method and apparatus, and a device, which belongs to the field of communications. The method can include splitting a service stream into a plurality of service substreams, where the service stream include at least one of an asymmetric service stream and a hybrid service stream. The method can further include establishing network slices respectively corresponding to the plurality of service substreams, at least one network slice corresponding to the service substreams being transmitted by using a packet duplication mechanism, and transmitting service data of each service substream by using the network slices corresponding to the each service substream.

Abstract: The technologies described herein are generally directed toward shedding processing loads associated with route updates. For instance, a system can comprise a processor and a memory that can enable operations facilitating performance of operations including facilitating receiving a content item for transmission to a destination router device on a network. The operations can further comprise facilitating communicating, to a second routing device, a first portion of the content item. The operations can further comprise facilitating communicating, to a third routing device, a second portion of the content item. Further, operations can be performed for appending a separation indicator to at least one of the first portion or the second portion, wherein the separation indicator provides information that links the first portion to the second portion.

Abstract: A method for performing a handover analysis is provided. The method can include obtaining base station location information for a plurality of base stations that provide a wireless network for communication with a moving vehicle, obtaining position and velocity information for the moving vehicle, and generating at least one handover metric computed from the position and velocity information and the base station location information, for use in determining a target base station to be used when performing a handover procedure to transition communication with the moving vehicle from the current base station to the target base station. This enables a variety of handover metrics to be generated that take into account the deployment of the wireless network, which can be useful in systems such as Air to Ground (ATG) systems where the moving vehicles have a relatively high velocity, and the base stations may be relatively far apart.

Abstract: The disclosure provides methods and apparatus which relate to control channel decoding in a wireless communications network. In one aspect, there is provided a method in a wireless device for a wireless communications network. The method includes receiving a first set of coded control symbols on a physical control channel in a first time slot, receiving a second set of coded control symbols on the physical control channel in a second time slot subsequent to the first time slot, and attempting to decode a control message based on the first set of coded control symbols and the second set of coded control symbols using one or more soft-combining techniques.

Abstract: The disclosure describes an RFID system having chip-based novel Simple Random-Access Procedure (SRAP) and Dynamic Simple Random-Access Procedure (DSRAP) tags, and chip-less time and frequency coded tags, for inventory management. The SRAP process contains static (pre-defined) size Frame Structures, and RFID tags compete for network resources by transmitting random preambles to contend for resources to send its Tag-ID to the RFID Reader. The DSRAP process contains dynamic (changing) size Frame Structures and is more efficient than SRAP if the number of tags is lower. The disclosed memory-based variants, save the orthogonal preambles in the tag's memory to reduce the number of transmitted bits and processing necessary to calculate the preambles. To further improve system efficiency and reduce the number of transmitted bits, disclosed memory-based variants may use a pre-defined memory-based modulation (QAM) signal in the memory of the transmitter of the Tags.

Abstract: Disclosed is a system for managing wireless transmitting devices in which a wireless transmission from a transmission device is detected within or about a set area and an allowability of the transmission device to continue transmitting is based on an identification information, of the device, a location of the device and a number being called by the device.

Abstract: Methods and apparatus, including computer program products, are provided for monitoring occasions in a downlink, such as paging occasions. In some example embodiments, there may be provided an apparatus that includes at least one processor and at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to at least receive information indicating a start of one or more paging occasions within at least a portion of a frame and monitor the one or more paging occasions in accordance with the received information. Related systems, methods, and articles of manufacture are also described.

Abstract: An operation method of an electronic device including: dividing a cell search period into a plurality of partial detection ranges based on the number of partial buffers and a size of the partial buffer; obtaining a first correlation detection information based on a first synchronization signal, while temporarily storing first signals in a first partial buffer among the partial buffers, in which the first signals are received during a first partial detection range among the plurality of partial detection ranges; and obtaining a second correlation detection information for the first signals based on the first correlation detection information and a second synchronization signal, during a second partial detection range among the plurality of partial detection ranges and obtaining the first correlation detection information for second signals based on the first synchronization signal, while temporarily storing the second signals received during the second partial detection range in a second partial buffer.

Abstract: Apparatuses, systems and methods are disclosed for wireless communication. A base station may communicate with a plurality of user equipments (UEs) without allocating spectral resources to the UEs for communicating scheduling requests. The base station may detect a scheduling request from a requesting UE of the plurality of UEs. The scheduling request may include a spread spectrum signal based on a spreading sequence. The scheduling request may indicate an identity for a requesting UE without indicating information other than the identity. The base station may grant spectral resources to the requesting UE in response to detecting a scheduling request.

Abstract: A method and an apparatus for generating an Ipv6 multicast address are provided. The method includes: a client generates an IPv6 multicast address of a multicast group based on obtained location information of a target device. Further, after the client generates an IPv6 multicast address based on the location information, joins the multicast group based on the IPv6 multicast address, the client receives data from a multicast source to the multicast group.

Abstract: Disclosed is a wireless communication system using multiple transmission and reception points. In a wireless communication system having a first transmission and reception point and at least one second transmission and reception point belonging to the same cell, the first transmission and reception point has a wider transmission area than the at least one second transmission and reception point, and the first transmission and reception point and the at least one second transmission and reception point generate downlink transmission signals by using the same physical layer cell ID or virtual cell IDs allocated to each terminal, and then the terminals generate uplink transmission signals by using the allocated virtual cell IDs.

Abstract: According to the present invention, a transmitting station apparatus includes: a plurality of modulation units that modulates a plurality of streams into which transmission data is divided to generate a plurality of first data signals; a training signal generation unit that generates a known training signal; a linear equalization unit that linearly equalizes the plurality of first data signals using a tap coefficient for removing inter-antenna interference and inter-symbol interference and outputs second data signals on which transmission beam forming and equalization are simultaneously performed; and a plurality of transmitting station communication units that transmit the training signal or the second data signals to a receiving station apparatus and receive the tap coefficient from the receiving station apparatus, and a receiving station apparatus includes: a coefficient estimation unit that estimates a channel impulse response from the training signal and calculates the tap coefficient based on the channe

Abstract: The present invention is designed so that beamforming can be executed properly even when user terminals are in idle mode. A user terminal according to the present invention communicates with a radio base station that uses a plurality of beam patterns, and has a receiving section that performs a receiving process for paging information which is transmitted in varying beam patterns, in a paging time period comprised of a plurality of unit periods, and a transmission section that transmits a response signal in response to receipt of the paging information.

Abstract: A random access method, user equipment (UE), a base station, and a random access system, are provided to address relatively long service delay. In various embodiments, after downlink synchronization with a cell is obtained, UE can determine a preamble sequence of the UE in the cell, where the UE has not obtained uplink synchronization with the cell. The UE can then obtain service data and generate a scrambling code, and scramble the service data based on the scrambling code to obtain scrambled service data. The UE can then configure, based on a predetermined resource mapping relationship, time-frequency resources respectively occupied by the preamble sequence and the scrambled service data. The UE then sends on the configured time-frequency resources, the preamble sequence and the scrambled service data to a base station the cell belongs to and receives random access response sent by the base station based on the preamble sequence.

Abstract: Systems, methods, and apparatus for multi-drop coexistence management are described. A data communication apparatus has a bus interface that couples the data communication apparatus to a serial bus and a controller configured to determine that a datagram received from the serial bus is addressed to a register address corresponding to a coexistence management identifier, activate a line driver of the bus interface circuit that is coupled to a data line of the serial bus during a portion of a first payload of the datagram when one or more coexistence management messages are ready for sending from the slave device, where the portion of the first payload of the datagram is allocated for use of the apparatus, and transmit a first coexistence management message in the portion of the first payload of the datagram that is allocated for use of the data communication apparatus.

Abstract: A wireless access node serves a wireless User Equipment (UE) over a Primary Component Carrier (PCC) and Secondary Component Carriers (SCCs). The wireless access node receives a report from the wireless UE indicating radio frequency bands and their received signal strengths. The wireless access node identifies the radio frequency bands that have adequate received signal strength. The wireless access node determines amounts of Multiple Input Multiple Output (MIMO) layers for the identified radio frequency bands. The wireless access node selects one of the identified radio frequency bands that has a larger amount of the MIMO layers. The wireless access node exchanges user data and network signaling with the wireless UE over the selected frequency band to serve the PCC to the UE. The wireless access node transfers additional user data to the UE to serve the SCCs to the UE.

Abstract: In embodiments, data transmitters and data receivers use, in a first mode, a first hopping pattern and a second hopping pattern for a repeated transfer of data, and, in a second mode, a third hopping pattern for the single transfer of data, wherein the hopping patterns of the first mode and the second mode are different so that a collision probability in the repeated transmission of data by a further data transmitter in a respectively different mode may be decreased and the transmission reliability may therefore be increased.

Abstract: A communication system comprising: input buffers adapted for buffering incoming data streams of samples from one or more channels; a receiver adapted for sequentially processing data from the input buffers; a processing rate of the receiver is higher than or equal to an incoming data rate of the incoming data; context memory adapted for saving an internal status of the receiver after processing the data corresponding with an input buffer before switching to a next input buffer and for restoring the internal status, wherein the receiver is adapted for processing the incoming data in a frame detection phase, and in a frame demodulation phase in which frames and/or subframes are demodulated into bits and wherein the internal status of the receiver related to an input buffer is only saved and restored in the frame detection phase or before and after demodulating subframes.

Abstract: According to some embodiments, a method is performed by a user equipment for reporting channel state information. The user equipment is configured with two or more channel state information reference signal, CSI-RS, resources in a CSI-RS resource set. The method comprises: selecting at least two CSI-RS resources from the CSI-RS resource set, wherein each of the at least two selected CSI-RS resources are associated to a set of spatially multiplexed layers, wherein different sets comprise different layers; determining a preferred precoder matrix for the selected CSI-RS resources; and transmitting a CSI report indicating the selected CSI-RS resources and the preferred precoder matrices. The method may further comprise calculating a channel estimate for the selected CSI-RS resources, and determining a channel quality indicator, CQI, corresponding to a hypothetical transmission from a plurality of effective channels where layers transmitted through the effective channels mutually interfere.

Abstract: In an exemplary embodiment, a network node can receive signals from user devices in a wireless communication network. The network node can combine the signals received at each receive antenna of the network node based on vectors from a pre-defined set of vectors. The network node can also process the combined signals to obtain an estimate of the signals.

Abstract: A roadside radio device includes a first radio unit which receives a radio data packet from an in-vehicle radio device, and a first application unit which processes application data. The first radio unit includes a radio data processing unit including a correlation processing unit which compares a data string of vehicle identification information with a data string of communication type information to determine whether there is a correlation in the radio data packet. When the correlation processing unit determines that there is the correlation in the radio data packet, the first radio unit outputs the application data included in the radio data packet to the first application unit. When the correlation processing unit determines that there is no correlation in the radio data packet, the first radio unit treats the radio data packet as invalid data.

Abstract: A communication device includes: a wireless communication section configured to wirelessly receive a signal from another communication device; and a control section configured to, in the case where the other communication device transmits a first signal that includes one or more preamble symbols including one or more pulses, acquire a correlation computation result including a correlation value indicating magnitude of correlation between the first signal and a second signal corresponding to the first signal received by the wireless communication section, as an element obtained at each delay time that is time elapsed after the other communication device transmits the preamble symbol at a designated interval, detect a specific element that is a plurality of the elements included in the correlation computation result, in accordance with a predetermined standard, and calculate a reliability parameter that is an indicator indicating whether the detected specific element is appropriate for a processing target.

Abstract: A system and methods comprise a touchscreen at a premises. The touchscreen includes a processor coupled to a security system at the premises. User interfaces are presented via the touchscreen. The user interfaces include a security interface that provides control of functions of the security system and access to data collected by the security system, and a network interface that provides access to network devices. A camera at the premises is coupled to the touchscreen via a plurality of interfaces. A security server at a remote location is coupled to the touchscreen via a plurality of channels and a plurality of protocols. The security server comprises a client interface through which remote client devices exchange data with the touchscreen and the security system.

Abstract: A signal receiving method, an apparatus and a communication system. The network device determines a subcarrier location of a to-be-sent first signal and a subcarrier location of a to-be-sent second signal, where subcarriers occupied by the first signal are continuous subcarriers in a first group of resource elements, subcarriers occupied by the second signal are continuous subcarriers in a second group of resource elements, a quantity of the subcarriers occupied by the first signal is the same as a quantity of the subcarriers occupied by the second signal, and a subcarrier spacing in the first group of resource elements is different from a subcarrier spacing in the second group of resource elements, the first signal and the second signal are primary synchronization signals. The network device sends the first signal to the terminal device and sends the second signal to the terminal device or other terminal device.

Abstract: This disclosure provides systems, methods, and apparatuses for wireless communication. In some aspects, a user equipment (UE) may enable adaptive receive diversity (RxD) by receiving an indicator for a channel occupancy time (COT), outside of the COT and in a non-RxD mode, and may transfer to the RxD mode for reception during the COT. After an end to the COT, the UE may return to the non-RxD mode. In this way, the UE enables improved power gain, diversity gain, or spatial nulling gain during a COT, and enables reduced power utilization outside of the COT.

Abstract: A user terminal is disclosed including a receiver, a transmitter, and a processor. The receiver receives downlink control information including a transmission power control (TPC) command. The transmitter transmits an uplink signal using a transmission power that is controlled based on an accumulated value of the TPC command, accumulated independently of a length of a transmission duration of the uplink signal. The processor resets the accumulated value if a predetermined parameter is provided by higher layer signaling. In other aspects, a radio base station and a radio communication method for a user terminal are also disclosed.

Abstract: A receiving device includes an equalization processor including multiple delay equalizers. The equalization processor is configured to: obtain a first error between an output of one specific tap in the multiple delay equalizers and a predetermined reference value, and calculate a first weight with which the first error is minimized; cause a calculation result of the first weight to be reflected in all taps in the multiple delay equalizers except the specific tap, obtain a second error between outputs of all taps in the multiple delay equalizers and the predetermined reference value, and calculate a second weight with which the second error is minimized; and update coefficients of all taps in the multiple delay equalizers at the same timing using the calculation result of the first weight and a calculation result of the second weight, and calculate an output of the equalization processor.

Abstract: A non-transitory computer-readable medium stores an OS and an application configured to, when executed by a processor coupled with a communication terminal, cause the communication terminal to, when a first condition is satisfied, provide the OS with a first instruction to receive a communication signal from one or more communication devices at intervals of a first period, when a second condition different from the first condition is satisfied, provide the OS with a second instruction to receive the communication signal at intervals of a second period longer than the first period, and each time the OS, having received one of the first and second instructions, causes the communication terminal to receive the communication signal from one of the one or more communication devices in accordance with the received one of the first and second instructions, receive information of the one of the one or more communication devices.

Abstract: [Object] To provide a mechanism capable of appropriately notifying the reception side of the resource setting for GFDM modulation on the transmission side. [Solution] An apparatus including: a processing unit configured to variably set at least any of bandwidth of a subcarrier or time length of a subsymbol in a first resource, and store information indicating setting content of the first resource in a second resource in which predetermined values are set for the bandwidth of the subcarrier and the time length of the subsymbol.

Abstract: A signal transmission method and a terminal, where a first terminal sets first information indicating a terminal type of the first terminal, and sends a signal including, the first information to a second terminal such that the second terminal identifies the terminal type of the first terminal based on the first information. The first information is set, and the signal including the first information is sent to the second terminal such that the second terminal identifies the terminal type of the first terminal based on the first information and processes the processed signal based on the terminal type of the first terminal to prevent, by distinguishing types of terminals, signal interference from being caused between different terminals.

Abstract: A method includes receiving wireless signals from consumer devices that are in communicable range of the merchant device. The wireless signals each include a unique identifier associated with one of the consumer devices. The method further comprises generating signal strength data that includes one signal strength value associated with the unique identifier of each of the wireless signals, storing the signal strength data in a data storage device, analyzing the signal strength data to determine how many of the consumer devices achieved various signal strength levels, determining a threshold signal strength value based on the analysis, determining a consumer device is present within a physical area when a subsequent wireless signal from a subsequent consumer device is greater than the threshold signal strength value.

Abstract: Systems and methods for supporting more flexible coverage areas and spatial capacity assignments using satellite communications systems are disclosed. A hub-spoke, bent-pipe satellite communications system includes: terminals; gateways; a controller for specifying data for controlling satellite operations in accordance with a frame definition including timeslots for a frame and defining an allocation of capacity between forward and return traffic; and a satellite including: pathways; at least one LNA, an output of which is for coupling to a pathway and to amplify uplink beam signals in accordance with the allocation; and at least one HPA, an input of which is for coupling to the pathway and to amplify downlink beam signals in accordance with the allocation, and wherein the frame definition specifies at least one pathway as a forward pathway for at least one timeslot and as a return pathway for at least one other timeslot in the frame.

Abstract: The invention relates to transmitting symbols in a MIMO wireless communication system, said method comprising: determining a p value; applying to a first block of M data symbols X=(X0, . . . XM-1) a pre-coder to obtain a second block of M symbols Y=(Y0, . . . YM-1) with Formula (I); applying a M size DFT then a N size IDFT to the first block of M symbols to obtain a first SC-FDMA symbol, said first SC-FDMA symbol being of a given duration; applying a M size DFT then a N size IDFT to the second block of M symbols to obtain a second SC-FDMA symbol, said second SC-FDMA symbol being of the given duration; transmitting during a time interval of the given duration, simultaneously the first and second SC-FDMA symbols, into the radio signal.

Abstract: This application is directed to a camera system having one or more processors, memory having a limited capacity, a camera element and a microphone. The camera system captures video and audio data in real-time via the camera element and the microphone, respectively. While capturing the video and audio data in real-time, the captured video and audio data are stored in the memory having the limited capacity, and sent to a remote server system via the communication interface for storage by the remote server system. The camera system determines that a portion of the video and audio data was not available at the remote server system. In accordance with a determination that at least some of the portion is still available in the memory having the limited capacity, the camera system resends the at least some of the portion from the memory to the remote server system via the communication interface.

Abstract: A method and apparatus (200A) are provided for multiplexing data and uplink control bitstreams on a 5G-NR uplink by generating a multiplexing configuration structure with one or more processors (201) and supplying the data and uplink control bitstreams to a multiplexing engine (214) which includes an index calculation logic circuit (212) and multiplex selector circuit (213), where the index calculation logic circuit is configured with the multiplexing configuration structure (CONFIG) to execute an iterative data-control multiplexing algorithm which generates ordered selection indices in sequential order (MUX_SEL), and where the multiplex selector circuit receives and selects m-bit sequences from the data bitstream and one or more uplink control bitstreams for output into a multiplexed output stream according to the ordered selection indices generated by the index calculation unit, where m is an integer greater than or equal to 1.

Abstract: Provided are a frame transmission method performed in an access point (AP), a frame reception method performed in a terminal, and an AP. The frame transmission method performed in an AP includes acquiring a channel for transmitting a first data unit of a first terminal, when a data unit to be transmitted to at least one terminal other than the first terminal is in the AP, generating a physical layer convergence procedure (PLCP) protocol data unit (PPDU) including the first data unit and the data unit to be transmitted to the at least one terminal, and transmitting the PPDU to the first terminal and the at least one terminal. Accordingly, it is possible to improve the performance of a wireless local area network (WLAN).

Abstract: Disclosed in the present application is a method by which a terminal reports a rank indicator to a base station in a wireless access system. The rank indicator reporting method comprises the steps of: setting a plurality of channel status information—reference signal (CSI-RS) resources for one CSI process through an upper layer; selecting one from among the plurality of CSI-RS resources; and reporting, to the base station, an indicator indicating the selected one CSI-RS resource and the rank indicator, wherein a bit size of the rank indicator is determined on the basis of a maximum number of antenna ports for the plurality of CSI-RS resources.

Abstract: A method for calculating delay in a distributed antenna system includes sending a ping initiation message from a remote node to a host node in a distributed antenna system. The ping initiation message uniquely identifies a first communication port of the remote node to the host node with a unique identification. The method also includes receiving a ping reply message at the remote node. The ping reply message corresponds to the ping initiation message and also uniquely identifies the first communication port of the remote node with the unique identification. The method also includes determining, at the remote node, whether the ping reply message corresponds to the first communication port of the remote node based on the unique identification. The method also includes, when the ping reply message corresponds to the first communication port of the remote node, calculating the round-trip time delay between sending the ping initiation message and receiving the ping reply message at the remote node.