Abstract: Techniques for random access (RA) in a cellular internet-of-things (CIOT) are discussed. An example apparatus configured to be employed within a User Equipment (UE), comprises a receiver circuitry, a processor, and transmitter circuitry. The receiver circuitry is configured to receive RA resource allocation information via one of a system information message or a downlink control information (DCI) message. The processor is operably coupled to the receiver circuitry and configured to: select a RA preamble sequence; generate a payload; and spread the payload via a spreading sequence. The transmitter circuitry is configured to transmit, based on the RA resource allocation information, a RA message comprising the RA preamble sequence and the payload, wherein the RA message is transmitted in a RA slot. The receiver circuitry is further configured to receive a response comprising a device identity of the UE and one of an uplink (UL) grant or a RA reject message.

Abstract: Technology for a base station operable to transmit downlink reference signals to user equipments (UEs) is disclosed. The base station can identify a UE to receive a set of pre-configured downlink reference signals from the base station. The set of pre-configured downlink reference signals can include a set of pre-configured pilot symbols in accordance with a defined reference signal transmission pattern that is characterized by a first pilot symbol spacing parameter (Nt) in a subcarrier time domain and a second pilot symbol spacing parameter (Nf) in a subcarrier frequency domain. The base station can transmit to the UE the set of pre-configured downlink reference signals in accordance with the defined reference signal transmission pattern. The UE can be configured to detect the set of pre-configured downlink reference signals and perform a channel estimation based on the set of pre-configured downlink reference signals.

Abstract: A radio head includes a standalone small cell configured to receive a plurality of IP packets over a series of sequential sub-frames, and generate a bandwidth report for each of the plurality of received IP packets. The radio head further includes a radio link control unit configured to sum a received bandwidth report with segmentation induced noise for each of the plurality of received IP packets, and an adaptive filter configured to apply a filter weight to each of the series of sequential sub-frames. The applied filter weight is based on (i) an output of the radio link control unit for a previous sub-frame, and (ii) an output of the adaptive filter for the previous sub-frame.

Abstract: A system and method for reducing latency in a N/ACK system is described. The present system and method reduces latency in a N/ACK system by pre-generating one or more unsolicited backhaul grants to prepare one or more backhaul elements for the receipt and transmission of wireless data. In an embodiment, the present system and method additionally generates backhaul NACK holds for delaying the transmission of a NACK such that a NACK arrive at the UE at a predesignated time, such as at the subframe 12 after the original transmission at the subframe 0.

Abstract: A wireless communication node includes a receiving portion configured to detect, over a wireless communication channel, a request to send (RTS) message from a transmitting station within a communication vicinity of the wireless communication node. The RTS message includes at least one duration field. The wireless communication node further includes a processor configured to (i) calculate an estimated time parameter, (ii) add the estimated time parameter to a current timestamp of the wireless communication node, and (iii) form a control packet from the RTS message, the at least one duration field, and the estimated time parameter. The wireless communication node further includes a transmitting portion configured to transmit over the wireless communication channel (i) a clear to send (CTS) message the transmitting station, and (ii) the control packet to a modem in operable communication with the wireless communication channel.

Abstract: A communication device in a communication network includes at least one processor. The at least one processor is configured to at least one processor configured to search a spectrum of the communication network using a Long Term Evolution Primary Synchronization/Secondary Synchronization Signals (LTE PSS/SSS), estimate the LTE interference using cell specific reference signals for Down Link (DL) when the LTE PSS/SSS signal is detected, and utilize LTE cell specific reference signals (CRS) and feed the equalized signal to a Data Over Cable Service Interface Specification (DOCSIS) Physical Layer (PHY) engine.

Abstract: A base station can obtain channel quality conditions for mobile devices in a scheduling interval and identify a channel quality, a target transmission scheme, and a transmission power level for each of the mobile devices. The base station can assign a unique orthogonal CDMA code and can force the mobile devices to transmit K repeated bursts of uplink data such that each of the mobile devices has a rotated phase shift based on the unique orthogonal CDMA code assigned to each of the mobile devices with each of the mobile devices multiplexed on a same physical channel using an overlaid CDMA operation. The base station can process K repeated bursts that are multiplexed on the same physical channel using the overlaid CDMA operation. The base station can separate the mobile devices according to the unique orthogonal CDMA code and use IQ accumulation according to combine the K repeated bursts.

Abstract: A wireless communication node includes a receiving portion configured to detect, over a wireless communication channel, a request to send (RTS) message from a transmitting station within a communication vicinity of the wireless communication node. The RTS message includes at least one duration field. The wireless communication node further includes a processor configured to (i) calculate an estimated time parameter, (ii) add the estimated time parameter to a current timestamp of the wireless communication node, and (iii) form a control packet from the RTS message, the at least one duration field, and the estimated time parameter. The wireless communication node further includes a transmitting portion configured to transmit over the wireless communication channel (i) a clear to send (CTS) message the transmitting station, and (ii) the control packet to a modem in operable communication with the wireless communication channel.

Abstract: Technology for a user equipment (UE) operable to perform mission critical communications with an eNodeB is disclosed. The UE can transmit a physical random access channel (PRACH) signal to the eNodeB that indicates a mission critical communication to be performed between the UE and the eNodeB. The PRACH signal can be transmitted in accordance with a first transmission time interval (TTI). The UE can receive a random access response (RAR) message from the eNodeB that includes a timing advance (TA) and a resource allocation for the mission critical communication. The RAR message can be transmitted from the eNodeB using a second TTI. The UE can perform the mission critical communication with the eNodeB in an uplink using the TA and the resource allocation indicated in the RAR message. The mission critical communication can be performed using a physical uplink shared channel (PUSCH) and in accordance with the second TTI.

Abstract: Techniques for random access (RA) in a cellular internet-of-things (CIOT) are discussed. An example apparatus configured to be employed within a User Equipment (UE), comprises a receiver circuitry, a processor, and transmitter circuitry. The receiver circuitry is configured to receive RA resource allocation information via one of a system information message or a downlink control information (DCI) message. The processor is operably coupled to the receiver circuitry and configured to: select a RA preamble sequence; generate a payload; and spread the payload via a spreading sequence. The transmitter circuitry is configured to transmit, based on the RA resource allocation information, a RA message comprising the RA preamble sequence and the payload, wherein the RA message is transmitted in a RA slot. The receiver circuitry is further configured to receive a response comprising a device identity of the UE and one of an uplink (UL) grant or a RA reject message.

Abstract: A method for detecting a channel occupancy time declared by an interfering device in a wireless communication system includes (a) receiving a first radio frequency (RF) transmission from a base station at a user equipment (UE) device, (b) detecting failure to receive a second RF transmission from the base station at the UE device, and (c) in response to detecting the failure to receive the second RF transmission from the base station, causing the UE device to operate in a sleep mode. Another method for detecting a channel occupancy time declared by an interfering device in a wireless communication system includes (a) receiving a first RF transmission from a base station at a UE device, (b) detecting, at the UE device, an interfering RF transmission, and (c) in response to detecting the interfering RF transmission, causing the UE device to operate in a sleep mode.

Abstract: An assisted random-access procedure allows band sharing between New Radio Unlicensed (NR-U) and Wi-Fi to improve coexistence of NR-U and Wi-Fi in shared unlicenced bands (e.g., below 7 GHz). To connect to an NR-U network, NR-U User Equipment (UE) receives and decodes an NR-U preamble of an NR-U wireless transmission to determine NR-U channel occupancy time (COT). The NR-U UE detects Wi-Fi wireless transmissions and decodes a Wi-Fi preamble to determine Wi-Fi COT. A random access (RA) opportunity is acquired based upon the NR-U wireless transmission and the NR-U COT. When the RA opportunity is not during the Wi-Fi COT, a PRACh message is transmitted from the NR-U UE to a NR-U base station (gNB) to allow the NR-U UE to join the NR-U network. NR-U transmissions may include an NR-U common preamble that may be decoded by existing Wi-Fi devices to avoid collisions with NR-U wireless transmissions.

Abstract: A base station can obtain channel quality conditions for mobile devices in a scheduling interval and identify a channel quality, a target transmission scheme, and a transmission power level for each of the mobile devices. The base station can assign a unique orthogonal CDMA code and can force the mobile devices to transmit K repeated bursts of uplink data such that each of the mobile devices has a rotated phase shift based on the unique orthogonal CDMA code assigned to each of the mobile devices with each of the mobile devices multiplexed on a same physical channel using an overlaid CDMA operation. The base station can process K repeated bursts that are multiplexed on the same physical channel using the overlaid CDMA operation. The base station can separate the mobile devices according to the unique orthogonal CDMA code and use IQ accumulation according to combine the K repeated bursts.

Abstract: A method is provided for detecting an access zone configuration of a downlink wireless transmission received from a wireless network by a receiver. The method includes steps of activating the receiver, synchronizing the receiver with the wireless network, detecting, by the receiver after the step of synchronizing, a received access zone of the downlink wireless transmission, determining a base symbol of the detected access zone, ascertaining a first gap and a second gap from repetitive information contained within the determined base symbol, concluding, from the ascertained first and second gaps, that the detected access zone is part of a multiple access zone configuration, and registering, after the step of concluding, the receiver with the wireless network.

Abstract: A method is provided for detecting an access zone configuration of a downlink wireless transmission received from a wireless network by a receiver. The method includes steps of activating the receiver, synchronizing the receiver with the wireless network, detecting, by the receiver after the step of synchronizing, a received access zone of the downlink wireless transmission, determining a base symbol of the detected access zone, ascertaining a first gap and a second gap from repetitive information contained within the determined base symbol, concluding, from the ascertained first and second gaps, that the detected access zone is part of a multiple access zone configuration, and registering, after the step of concluding, the receiver with the wireless network.

Abstract: A wireless communications system provides coordinated multi point transmission over a channel of a wireless transmission medium. The system includes a central controller having a processor and a memory, a first cell region having a first communications node disposed therein, and a plurality of neighboring cell regions disposed about the first cell region. Each of the plurality of neighboring cell regions includes a second communications node disposed therein. The system includes a plurality of user equipment devices disposed within an overlapping region of the first cell region and one of the neighboring cell regions. The central controller is configured to assign the first communications node to be an anchor transmission point of a coordinated set of transmission points. The anchor transmission point is configured to perform carrier sensing on the channel. The coordinated set of transmission points includes the first communications node and at least one second communications node.

Abstract: A communication device in a communication network includes at least one processor. The at least one processor is configured to at least one processor configured to search a spectrum of the communication network using a Long Term Evolution Primary Synchronization/Secondary Synchronization Signals (LTE PSS/SSS), estimate the LTE interference using cell specific reference signals for Down Link (DL) when the LTE PSS/SSS signal is detected, and utilize LTE cell specific reference signals (CRS) and feed the equalized signal to a Data Over Cable Service Interface Specification (DOCSIS) Physical Layer (PHY) engine.

Abstract: A wireless communication node includes a transmitting portion configured to transmit over a wireless communication channel a plurality of data packets to a first neighboring node, a receiving portion configured to detect the first neighboring node, and a processor configured to calculate a beamforming vector for the first neighboring node and direct the transmitting portion to transmit the plurality of data packets to the first neighboring node with beamforming based on the calculated beamforming vector.

Abstract: A wireless communication node includes a receiving portion configured to detect, over a wireless communication channel, a request to send (RTS) message from a transmitting station within a communication vicinity of the wireless communication node. The RTS message includes at least one duration field. The wireless communication node further includes a processor configured to (i) calculate an estimated time parameter, (ii) add the estimated time parameter to a current timestamp of the wireless communication node, and (iii) form a control packet from the RTS message, the at least one duration field, and the estimated time parameter. The wireless communication node further includes a transmitting portion configured to transmit over the wireless communication channel (i) a clear to send (CTS) message the transmitting station, and (ii) the control packet to a modem in operable communication with the wireless communication channel.

Abstract: Technology for a user equipment (UE) operable to perform mission critical communications with an eNodeB is disclosed. The UE can transmit a physical random access channel (PRACH) signal to the eNodeB that indicates a mission critical communication to be performed between the UE and the eNodeB. The PRACH signal can be transmitted in accordance with a first transmission time interval (TTI). The UE can receive a random access response (RAR) message from the eNodeB that includes a timing advance (TA) and a resource allocation for the mission critical communication. The RAR message can be transmitted from the eNodeB using a second TTI. The UE can perform the mission critical communication with the eNodeB in an uplink using the TA and the resource allocation indicated in the RAR message. The mission critical communication can be performed using a physical uplink shared channel (PUSCH) and in accordance with the second TTI.