Abstract: Systems, methods, and devices to reduce the channel estimation overhead by collecting data from many UEs and building a location-based mathematical model are disclosed. During building of the model, a reference signal is used to collect location- and signal-related data from connected UEs. Once the model is successfully built, it is then transmitted and/or downloaded to each new UE that connects to the base station. The UEs and/or the base stations then use this model to determine their own transmission parameter values. The UEs also report their location to the base stations, which use the model to estimate channel conditions and adapt transmission parameters for themselves.

Abstract: Systems may provide feedback that may include antenna selection or mobile device configuration. Antennas may be automatically configured throughout the device or the orientation or location of the mobile device may be altered to increase performance. Historical performance information of the mobile device may be maintained in order to determine proactive manipulations of the mobile device. In addition, multiple mobile devices may cooperatively determine the orientation or location that may increase performance.

Abstract: According to certain embodiments, a method is disclosed for use in a network node. The method comprises determining at least one parameter N per carrier frequency. The parameter N indicates a maximum number of beams to be used by a wireless device for signal measurements in a cell. The method comprises communicating the parameter(s) N to the wireless device.

Abstract: A wireless apparatus is configured such that: a correlation calculation unit calculates a correlation coefficient for signals received from respective antennas; and a cyclic shift control unit compares the correlation coefficient with a threshold value. If the correlation coefficient is equal to or higher than the threshold value, the cyclic shift control unit determines that there is a direct wave, allocates a common shift amount to a cyclic shift unit, and causes a beam forming unit to form and transmit a narrow beam. Meanwhile, if the correlation coefficient is lower than the threshold value, the cyclic shift control unit determines that there is no direct wave, allocates different shift amounts to the cyclic shift unit, and causes the cyclic shift unit to diversify the cyclic shift.

Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). A method for handling random access procedure in wireless communication system is provided.

Abstract: Apparatus, methods and computer-readable media for broadcast of multiple physical cell identity ranges are disclosed herein. A user equipment (UE) can receive system information (SI) containing physical cell identities (PCIs) associated with a first cell type or a second cell type, in which the first cell type is accessible to a first set of UEs and the second cell type is accessible to a second set of UEs and a second set of PCIs containing PCIs corresponding to a set of cells of the second cell type. The UE can also monitor for cells with a PCI in the first set of PCIs or the second set of PCIs. A base station may generate the SI indicating the first set of PCIs and the second set of PCIs. Additionally, the base station can communicate the SI to one or more UEs.

Abstract: A user equipment (UE) may receive information, via radio resource control (RRC) signaling, regarding a search space of a physical downlink control channel (PDCCH) for obtaining downlink control information (DCI) from a radio access network (RAN) node. Based on a slot format (SF) index in the DCI, the UE may determine a slot format for communicating with the RAN node, and communicate with the RAN node in accordance with the slot format. Additionally, a UE may communicate UE capability information, which may include a maximum number of blind decode attempts (BDAs), to the RAN node. The UE may determine shortened channel control elements (sCCEs) to be used, by the RAN node, to transmit shortened downlink control information (sDCI) via a shortened physical downlink control channel (sPDCCH), obtain sDCI by monitoring the sPDCCH in accordance with the determined sCCEs, and communicate with the RAN node in accordance with the sDCI.

Abstract: An average power tracking (APT) power amplifier apparatus is provided. In a non-limiting example, the APT power amplifier apparatus includes multiple sets of power amplifier circuits configured to amplify a radio frequency (RF) signal(s) for transmission in different polarizations (e.g., vertical and horizontal). In examples disclosed herein, the APT power amplifier apparatus can be configured to employ a single power management integrated circuit (PMIC) to provide an APT voltage to all of the power amplifier circuits for amplifying the RF signal(s). By employing a single PMIC in the APT power amplifier apparatus, it is possible to reduce footprint, power consumption, and costs of the APT power amplifier apparatus.

Abstract: There is provided an antenna arrangement for a radio transceiver device. The antenna arrangement comprises at least two antenna arrays, wherein at least one of the at least two antenna arrays has antenna elements of two polarizations. The antenna elements of one polarization at each of the at least two antenna arrays define a respective set of antenna elements. The antenna arrangement comprises at least two baseband chains. The antenna arrangement comprises a switching network configured to selectively operatively connect each of the at least two baseband chains with its own set of antenna elements such that no two baseband chains are operatively connected to one and the same set of antenna elements. Each of the at least one antenna array that has antenna elements of two polarizations is operatively connected to the switching network via a respective hybrid connector configured to provide a signal from one of the baseband chains to antenna elements of both polarizations.

Abstract: A distributed capacity base station system and method are disclosed. The system may provide a cost effective, high capacity broadband wireless access solution that can co-exist with GPS without interference to the GPS system.

Abstract: Based on a load prediction analysis performed by a machine learning enabled processor and a load balancer, the load of multiple distributed unit (DU) resources in a baseband unit (BBU) pool hub can be optimized. The BBU pool hub can comprise multiple DU functionality and redundant centralized unit (CU) functionality connected via a high-speed/low latency redundant switch to enable pooling of resources. DU resource pooling can facilitate efficiencies in the network by allocating resources based on active and/or inactive status, load, of radio units RUs as well Radio Bearers activity.

Abstract: Method and apparatus to analyze and present location information in an easy-to-digest manner are disclosed. In one embodiment, each piece of location information can include a piece of location-designating information and a piece of location-related information. Location-designating information is primarily for identifying location. Location-related information is information related to location-designating information. The location-designating information and the location-related information can be supplied by a mobile device. With the help of location-related information, each piece of location-designating information can be more accurately transformed into a label to help identify a location. The amount of location information can be reduced. All of the location-designating information pertaining to a given area can be consolidated into one piece of location-designating information related to the label.

Abstract: A head end unit of a distributed antenna system includes circuitry configured to: receive downlink signals from at least one base station; process the downlink signals into downlink channelized digital baseband signals at the head end unit by at least one of mixing, decimating, and filtering the downlink channelized digital baseband signals including call information for wireless communication; format the downlink channelized digital baseband signals for transport together; packetize and packet schedule the downlink channelized digital baseband signals into downlink packetized baseband signals at the head end unit; and transmit the downlink packetized baseband signals from the head end unit to remotely located units of the distributed antenna system.

Abstract: Method and apparatus to analyze and present location information in an easy-to-digest manner are disclosed. In one embodiment, each piece of location information can include a piece of location-designating information and a piece of location-related information. Location-designating information is primarily for identifying location. Location-related information is information related to location-designating information. The location-designating information and the location-related information can be supplied by a mobile device. With the help of location-related information, each piece of location-designating information can be more accurately transformed into a label to help identify a location. The amount of location information can be reduced. All of the location-designating information pertaining to a given area can be consolidated into one piece of location-designating information related to the label.

Abstract: Provided are a base station which processes a plurality of cells in a wireless communication system and an operation method of the base station. The operation method of the base station which processes a plurality of cells includes pooling a processing power of a first processor that processes a signal of a first cell and a processing power of a second processor that processes a signal of a second cell, and distributing the processing powers to the first processor and the second processor and processing, by the first processor and the second processor, the signal of the first cell and the signal of the second cell by using the distributed processing powers.

Abstract: A ceiling enclosure that includes a main body, swing down panel and enclosure door. There are pivot ear retention legs extending from the main body. There are latch pin legs extending from the main body. The swing down panel is adapted to mount devices to the swing down panel. The swing down panel includes pivot ears extending from the swing down panel to attach to pivot ear retention legs and includes latch pin retention legs extending from the swing down panel to attach to latch pin legs.

Abstract: A measurement reporting method includes: in a first target signaling and a second target signaling, configuring a measurement parameter and a measurement reporting parameter, respectively, for an unmanned aerial vehicle (UAV) in a connection state; then sending the first target signaling and the second target signaling to the UAV, so that the UAV performs target measurement according to the first target signaling, and reporting, after obtaining the measurement parameter, the measurement report including the measurement reporting parameter to the base station according to the second target signaling. The base station can respectively configure a measurement parameter and a measurement reporting parameter for the UAV in a connection state, so that in the flight process, the UAV can normally perform target measurement and report the measurement report of the target measurement, ensuring the accuracy and timeliness of the target measurement and the reporting measurement report of the UAV.

Abstract: If a cellular base station detects that it is about to shut down, either because no mobile terminals are within range, or because of a loss of power, for example because a user has deliberately switched it off, it first broadcasts a report that is about to shut down. This broadcast signal is picked up by the neighboring cells and used to update their neighbor lists, thus avoiding a false alarm which would otherwise be generated by the neighbors and transmitted to a centralized Operation Administration and Maintenance system when the shut-down cell fails to be detected on the next sampling cycle. The neighbors can then retain the shut-down base station in the neighbor list.

Abstract: In an embodiment, a network entity (e.g., a base station, a location server, etc.) transmits, to a user equipment (UE), at least one base station almanac (BSA) message that indicates (i) a set of transmission point locations associated with at least one base station, the set of transmission point locations including at least one transmission point location of a base station that is based upon a plurality of different transmission point locations associated with the base station, and (ii) a mapping of each of a plurality of beams to the at least one transmission point location. The UE receives the transmitted at least one BSA message.

Abstract: Methods of powering a radio that is mounted on a tower of a cellular base station are provided in which a direct current (“DC”) power signal is provided to the radio over a power cable and a voltage level of the output of the power supply is adjusted so as to provide a substantially constant voltage at a first end of the power cable that is remote from the power supply. Related cellular base stations and programmable power supplies are also provided.

Abstract: A method and base station supporting uplink transmissions. The method being used in a base station and comprising receiving a data block from a wireless transmit/receive unit (WTRU) using a hybrid automatic repeat request (H-ARQ) process, transmitting uplink scheduling information to the WTRU to indicate whether the data block should be retransmitted by the WTRU, wherein the uplink scheduling information includes a H-ARQ process identification for the H-ARQ process, and receiving a retransmission of the data block from the WTRU. The uplink scheduling information includes physical channel resources. The uplink scheduling information is received from a primary cell and the WTRU transmits to the primary cell and at least one secondary cell. The scheduling information indicates a modulation and coding scheme.

Abstract: Disclosed are methods and systems which convert a multi-microphone input signal to a multichannel output signal making use of a time- and frequency-varying matrix. For each time and frequency tile, the matrix is derived as a function of a dominant direction of arrival and a steering strength parameter. Likewise, the dominant direction and steering strength parameter are derived from characteristics of the multi-microphone signals, where those characteristics include values representative of the inter-channel amplitude and group-delay differences.

Abstract: A base station system includes a base station device (1), a wireless transmission device (2) and a data transfer device (3), each of which can be installed outdoors. Enclosures (12, 22 and 32) of the devices (1-3) each provide a degree of protection from water and dust ingress necessary for being installed outdoors. The enclosure (12) of the base station device (1) accommodates electronic equipment (11) functioning as a base station. The enclosure (22) of the wireless transmission device (2) accommodates electronic equipment (21) functioning as a radio station to perform wireless transmission with the other device for connecting the base station device (1) to a mobile backhaul network. The enclosure (32) of the data transfer device (3) accommodates electronic equipment (31) functioning as a router or a switch to transfer data packets or data flames between the base station device (1) and the wireless transmission device (2).

Abstract: Certain aspects of the present disclosure provide techniques for assigning or adjusting a transmit-power control mode, or parameters of a transmit-power at a user equipment used in sidelink communications. In some examples, the disclosure describes determining a user equipment (UE) is connected to the BS, and configuring the UE to use a first transmit-power control mode for determining a transmit-power used for transmitting wireless data over a sidelink based on the BS being positioned indoors.

Abstract: A system that incorporates the subject disclosure may include, for example, a process that includes adjusting a filter in electrical communication between an input terminal and a demodulator. The filter is applied to an information bearing signal, e.g., to mitigate interference, received at the input terminal, resulting in a filtered signal. An error signal is received, indicative of errors detected within information obtained by demodulation of a modulated carrier of the filtered signal. A modified filter state is determined in response to the error signal and the filter is adjusted according to the modified filter state, e.g., to improve mitigation of the interference. Other embodiments are disclosed.

Abstract: Described herein are systems configured for carrier aggregation. Systems include a multiplexing circuit having a filter assembly, switching circuit with a switching path, and a switchable impedance. The filters can be designed so that when operated simultaneously (e.g., during multi-band operation) the same inductance can be used allowing the switching network to switch in a particular inductance into the path. The described systems can include an inductance that is coupled to an output port so that when operating in single-band mode, the different paths share the same inductance. Relative to other solutions, the described systems can improve performance (e.g., reduce insertion loss), reduce the number of components in the associated module, reduce manufacturing costs, and the like.

Abstract: A method and base station supporting uplink transmissions. The method being used in a base station and comprising receiving a data block from a wireless transmit/receive unit (WTRU) using a hybrid automatic repeat request (H-ARQ) process, transmitting uplink scheduling information to the WTRU to indicate whether the data block should be retransmitted by the WTRU, wherein the uplink scheduling information includes a H-ARQ process identification for the H-ARQ process, and receiving a retransmission of the data block from the WTRU. The uplink scheduling information includes physical channel resources. The uplink scheduling information is received from a primary cell and the WTRU transmits to the primary cell and at least one secondary cell. The scheduling information indicates a modulation and coding scheme.

Abstract: A testing system comprises an emulator having a simulated radio channel for communicating therethrough with the electronic device. The testing system comprises a plurality of antenna elements coupled to an emulator which forms a beam of a signal of a path of a simulated radio channel with at least two antenna elements of the plurality of antenna elements in an anechoic chamber.

Abstract: Disclosed is a method that includes receiving absolute wireless access point coordinates from wireless access points that define respective wireless access point positions of the wireless access points. The method includes orienting the directional antenna to orientations based on the absolute wireless access point coordinates. The method includes transmitting test signals to the respective wireless access points while the directional antenna is positioned at the orientations to generate the database entries associated with the respective wireless access point positions. The method includes orienting the directional antenna according to a first one of the database entries having a greatest likelihood to establish a first communications path between a first one of the wireless access points and the wireless endpoint. The method includes transmitting a data signal to the first one of the wireless access points with a minimum transmission power based on the database entries.

Abstract: Systems and methods are disclosed for adjusting Radio Link Monitoring (RLM), Radio Link Failure (RLF) detection, RLF recovery, and/or connection establishment failure detection for wireless devices (16) in a cellular communications network (10) depending on mode of operation. In one embodiment, a node (14, 16) in the cellular communications network (10) determines whether a wireless device (16) (e.g., a Machine Type Communication (MTC) device) is to operate in a long range extension mode of operation or a normal mode of operation. The node (14, 16) then applies different values for at least one parameter depending on whether the wireless device (16) is to operate in the long range extension mode or the normal mode. The at least one parameter includes one or more RLM parameters, one or more RLF detection parameters, and/or one or more RLF recovery parameters.

Abstract: A device may receive network data associated with network devices, and may process the network data, with a first model, to determine a first queue identifying first discovery tasks to execute for the network devices and a second queue identifying second discovery tasks to execute for the network devices. The device may process the first queue and the second queue, with a second model, to determine a schedule for executing the first and second discovery tasks, and may execute the first and second discovery tasks based on the schedule. The device may calculate progress of the executions of the first discovery tasks and the second discovery tasks, and may estimate time intervals associated with completions of the executions of the first discovery tasks and the second discovery tasks. The device may provide, to a user device, information identifying the progress and the time intervals.

Abstract: The present disclosure relates to a wireless communication system node (1), where the node (1) comprises at least two antenna ports (P1A, P1B, P1C, P1D; P2A, P2B, P2C, P2D). The node (1) further comprises a beamforming controller (2) and a 5 beamforming network (3) which in turn comprises at least two beam ports (4, 5, 6, 7; 8, 9, 10, 11) that are adapted to provide corresponding beams (12, 13, 14, 15; 16, 17, 18, 19). The beamforming controller (2) is arranged to control the beamforming network (3) such that the beams (12, 13, 14, 15; 16, 17, 18, 19) have a common envelope (20) in a desired plane, where the common envelope (20) is adapted to a 10 desired coverage for a certain communication system sector (37).

Abstract: The invention described herein presents a system and method to overcome the distortions and affectations introduced by the highly variant channels of one or several antennas both in the transmitter and in the receiver. Unlike any existing invention that operates under the same conditions, this device uses a completely new reception technique based on the concept of virtual trajectories in which iterative calculations or solution of linear systems in operating time are not required, thus saving a considerable amount of operations. The receiver of this device manages to convert the fast variations of the channel into virtual antennas, thus achieving a considerable increase in the signal to noise-interference ratio. The resulting performance in terms of noise immunity is much better than any technique found so far and also requires a much smaller amount of calculations in the receiver.

Abstract: Disclosed are a communication technique for merging, with IoT technology, a 5G communication system for supporting a data transmission rate higher than that of a 4G system, and a system therefor. The disclosure can be applied to an intelligent service (for example, smart home, smart building, smart city, smart car or connected car, health care, digital education, retail, security and safety-related services, and the like) on the basis of 5G communication technology and IoT-related technology.

Abstract: Disclosed are a data transmission method, a network side device and a terminal. The method includes: reusing, by a terminal, a first resource to transmit first data, wherein the first data is data of a first service, the first resource is a resource in a second resource for transmitting second data, the second data is initial transmission data of a second service, a latency requirement of the first service is higher than a latency requirement of the second service; and retransmitting, by the terminal, third data on a third resource, wherein the third data is all or part of the second data.

Abstract: Disclosed are a communication technique for merging, with IoT technology, a 5G communication system for supporting a data transmission rate higher than that of a 4G system, and a system therefor. The disclosure can be applied to an intelligent service (for example, smart home, smart building, smart city, smart car or connected car, health care, digital education, retail, security and safety-related services, and the like) on the basis of 5G communication technology and IoT-related technology.

Abstract: A method of enabling an Open RAN-compatible radio unit (O-RU) to apply different beamforming weights to different physical resource blocks (PRBs) using a single sectionId and a single section extension type includes: specifying a first mode of operation in which the number of beamforming weights in the section extension type 1 is equal to L*numPrbs, L is the number of TRX and numPrbs is the number of physical resource blocks; signaling, by an Open RAN-compatible distributed unit (O-DU) to the O-RU, the first mode of operation by specifying a value of parameter extLen to be zero, wherein extLen is the length of the section extension in units of 32-bit words; and the O-RU applying the kth beamforming weights (bfwI and bfwQ), k=1, 2, . . . , L*numPrbc in section extension type 1 for TRX j, j=0, 1, . . . , L?1 to the ith PRB, i=1, 2, . . . , numPrbc defined under the sectionId of the C-plane message.

Abstract: A method is disclosed for a centralized unit (CU) of a wireless communication network, wherein the CU is associated with each of one or more remote units (RU) of the wireless communication network via a respective communication interface. The CU is adapted to operate in one of a plurality of modes including at least a normal operation mode and a power saving operation mode, and the normal operation mode defines a plurality of functions to be performed by the CU. The method comprises (when the CU is in the normal operation mode) determining that a traffic load associated with the one or more RU fulfills a power saving operation criterion, configuring—via the respective communication interface—each of the RU for autonomous operation, whereby each of the RU is configured to execute at least one of the plurality of functions, and transferring from the normal operation mode to the power saving operation mode.

Abstract: The concepts and technologies disclosed herein are directed to parallelism for virtual network functions (“VNFs”) in service function chains (“SFCs”). According to one aspect, a packet processing system can receive instructions to process, in parallel, at least a portion of a plurality of data packets associated with an SFC including a plurality of VNFs. The system can create a copy of at least the portion of the data packets. The system can send the copy of at least the portion of the data packets to at least two VNFs. The at least two VNFs can process, in parallel, the copy of at least the portion of the data packets. The system can receive, from the at least two VNFs, processed packets including the copy of at least the portion of the data packets and processed, in parallel, by the at least two VNFs. The system can combine the processed packets.

Abstract: Methods of powering a radio that is mounted on a tower of a cellular base station are provided in which a direct current (“DC”) power signal is provided to the radio over a power cable and a voltage level of the output of the power supply is adjusted so as to provide a substantially constant voltage at a first end of the power cable that is remote from the power supply. Related cellular base stations and programmable power supplies are also provided.

Abstract: A method comprises receiving a first received signal strength indicator (RSSI) of a first beacon in an array of beacons and receiving a second RSSI of a second beacon in an array of beacons, calculating a RSSI of the array (r) as a function of the first RSSI and the second RSSI, retrieving a calibrated RSSI value of the array (r?) from a memory, determining whether r>r?, and outputting a signal to a user device responsive to determining that r>r?.

Abstract: A communication device according to one embodiment comprise a transmitter configured to directly transmit a radio signal to another communication device. The transmitter is configured to transmit, when first location information indicating a geographical location of the communication device is acquired, the radio signal, based on a first radio resource associated with a location indicated by the first location information. The transmitter is configured to transmit, when the communication device cannot acquire the first location information, the radio signal, based on a second radio resource. The second radio resource is decided based on a method different from a method of deciding the first radio resource by using the first location information.

Abstract: In accordance with one or more embodiments, a communication system includes a transmitter configured to generate a first communication signal conveying data. A first coupler is configured to generate first guided electromagnetic waves in response to the first communication signal, wherein the first guided electromagnetic waves are guided by an external surface of a metallic shield of a underground power cable and propagate, without requiring any electrical return path, via a wave mode having a majority of field strength within the protective jacket of the underground power cable.

Abstract: Disclosed herein are methods and systems for facilitating information and expertise distribution via a communication network. A method at a first computing device may include receiving a request for information from a second computing device, determining at least one third computing device based on an analysis of the request for information, communicating the request for information to the determined at least one third computing device, receiving a response corresponding to the request for information from the determined at least one third computing device, adjusting a credit level of a user associated with the determined at least one third computing device based on the received response, and communicating the response to the second computing device. The credit level of the user may indicate one or more credits earned by the user.

Abstract: A method for beam sweeping in a wireless communication system is described. Beam sweeping includes performing a reduced beam sweep corresponding to a reduced set of beams that are a subset of a full set of beams available for transmitting and/or receiving from an antenna module, without sweeping beams that are not members of the reduced set of beams. The method includes selecting a beam out of the reduced set of beams for transmitting and/or receiving from the antenna module based on the reduced beam sweep without sweeping beams that are not members of the reduced set of beams. Related devices are disclosed.

Abstract: A method is disclosed for out-of-band data communication with a base station in a wireless network, the method comprising: determining, at a base station in a cellular access network, the base station configured to use a coordination server and to a first core network for providing network access to user equipments (UEs), an occurrence of an event regarding a communication problem related to the base station; sending an out-of-band message, via an embedded UE module coupled to the base station attached to a second core network, to the coordination server, based on the occurrence of the event at the base station; updating, at the coordination server, a stored status for the base station, thereby enabling a status of the base station to be updated at the coordination server via an out-of-band message.

Abstract: An angle of arrival system is configured to efficiently measure phase differences. The angle of arrival system includes a master receiver for demodulating the signal received at one antenna and for implementing a tracking loop to identify the timing of symbols within the signal. This timing information can be fed back as a synchronization signal to a despreader in the master receiver and to a despreader in each of a number of slave receivers to synchronize the timing at which each signal is despread. Because despreading is synchronized, the outputs of the despreaders can be used to directly calculate phase differences between each pair of signals. In this way, the slave receivers do not need to implement a demodulator or a tracking loop. When the received signal is a non-spread signal, the phase differences between each pair of signals can be calculated directly from the modulated samples of each pair of signals without despreading.

Abstract: A device, computer-readable medium, and method for activating antennas based upon a location and a movement of a group of mobile endpoint devices are disclosed. For example, a method may include a processor of a cellular network detecting a group of mobile endpoint devices associated with a first location and activating a first antenna at a first cell site of the cellular network associated with the first location, in response to detecting the group of mobile endpoint devices. The processor may further detect a movement of the group of mobile endpoint devices toward a second location, and activate a second antenna at a second cell site of the cellular network associated with the second location and deactivate the first antenna, in response to detecting the movement of the group of mobile endpoint devices toward the second location.

Abstract: Blind selection of a multi-frequency band indicator (MFBI) channel is disclosed. The crowded wireless spectrum can comprise overlapping bands, e.g., LTE bands 17 and 12. Whereas current standards allow setting the E-UTRA frequency to only one absolute radio-frequency channel number, alternative channel information can be distributed via SIB message. However, where a UE cannot read the MFBI information in a SIB message, the UE can be ignorant of a channel in an alternative band. Channel information for an alternative band can be sent to the UE as part of a radio resource control RRC message, for example, comprising a dEUTRACarrierFreqInfo value. The RRC connection release message can cause the UE to release a connection and then reestablish a new connection based on the channel information for then alternative band. This can allow mobile devices that do not support MFBI via SIB, to access channels in MFBI-type bands.

Abstract: The present disclosure is directed generally to systems and methods for dynamically selecting a retransmission rate for communication between two devices. The retransmission rate may be selected after a transmission has failed between the devices. In some embodiments, the retransmission rate may be selected based on relative velocity of the devices. In some embodiments, the retransmission rate may be selected based on transmission channel characteristics. The retransmission rate may be selected such that the retransmission will be less than an allowable transmission rate based on a distance between the two devices.