Abstract: A method of user equipment (UE) autonomous release RRC connection to reduce power consumption and signaling overhead is proposed. UEs sending small amount of data with long period, e.g., Machine-Type Communication (MTC) and Narrow-Band Internet of Things (NB-IoT) UEs, are allowed to be released autonomously after sending a given amount of data with corresponding request and configuration procedures. In one embodiment, UE sends an RRC connection request with UE autonomous release request, and receives an RRC setup message with UE autonomous release information. UE then transmits an RRC setup complete message with piggybacked uplink data. UE autonomously releases to Idle state upon expiry of an inactivity timer.

Abstract: Various examples and schemes pertaining to differentiation of user equipment (UE) in narrowband IoT (NB-IoT) are described. A processor of a UE generates a signal containing UE-specific information that is specific to the UE. The processor transmits the signal to a network node of a wireless network. The processor then receives a response from the network node, the response comprising an access stratum (AS) configuration created by the network node based on the UE-specific information. The processor also applies the AS configuration which reduces power consumption of the UE.

Abstract: Concepts and examples pertaining to efficient coding switching and modem resource utilization in wireless communication systems are described. A processor of a modem of a user equipment (UE), configured with at least a first-capacity decoder and at least a second-capacity decoder, receives a common virtual carrier (CVC), a dedicated virtual carrier (DVC), or both. The CVC contains common information shared by multiple UEs, control information for the UE, and/or data information related to first data destined for the UE. The DVC contains control information for the UE, the first data, or a combination thereof. The first-capacity decoder decodes data of a small size up to a low data rate. The second-capacity decoder decodes data of a large size up to a high data rate. The processor determines whether to decode the first data using the first-capacity decoder or the second-capacity decoder based on the data information in the CVC.

Abstract: Novel UE operation modes are proposed to improve the power consumption for potentially less mobile UEs, both for stationary UEs, almost stationary UEs, and limited mobility UEs by optimizing neighbor cell measurements and/or by optimizing UE wakeup sequence. Optimized neighbor cell measurements mean that the procedure can be done less frequently or not at all during certain conditions. Optimized wakeup sequence (with less wakeup time) mainly affect paging performance via UE implementations. It is an object of the current invention to allow UE to be aware of its mobility states, via either explicit configuration or self-estimation, and adjust its wakeup and measurement behaviors accordingly. Also, some UEs are allowed to switch among different mobility states, while other UEs are fixed in a given mobility state.

Abstract: Aspects of the disclosure provide a mobile terminal including a processing circuit. The processing circuit is configured to obtain a serving cell measurement result of measuring a first set of signal beams from a serving base station, determine a cell-level signal quality parameter based on the serving cell measurement result, and determine whether the cell-level signal quality parameter meets a poor cell-level signal quality condition. The processing circuit is further configured to, in response to a determination that the cell-level signal quality parameter meets the poor cell-level signal quality condition, obtain a neighboring cell measurement result of measuring a second set of signal beams from a neighboring base station, determine whether a measurement event occurs based on the serving cell measurement result and the neighboring cell measurement result, and send a measurement report to the serving base station in response to a determination that the measurement event occurs.

Abstract: A method of extended DRX paging includes a base station that transmits extended DRX configuration information and a User Equipment (UE) receives the extended DRX configuration from the base station. The UE determines a first number of frames that are included in a hyper-frame based at least in part on the extended DRX configuration information and selects a hyper-frame number. The hyper-frame number is based at least in part on the extended DRX configuration information. The UE maintains a hyper-frame count and the hyper-frame count is incremented after each hyper-frame. The UE then goes into sleep mode and the UE determines a wake up time before a standard DRX cycle that occurs during the selected hyper-frame. The UE may also determine a first wake up time and a second wake up time based on the selected hyper-frame number and synchronization error between a first cell and a second cell.

Abstract: An enhanced RRC re-establishment procedure on secondary base station (SeNB) is proposed. A UE with dual connectivity is connected to both a master base station (MeNB) and a secondary eNB (SeNB). The UE performs radio link monitoring (RLM) and radio link failure (RLF) procedures over PCELL served by the MeNB. Once RLF is detected, the UE performs RRC connection reestablishment with a selected cell. From SeNB perspective, the SeNB triggers proactive fetching of UE context from the MeNB to ensure a successful reestablishment. From MeNB perspective, the MeNB provides preference information to the UE for selecting a suitable cell for reestablishment. From UE perspective, the UE considers its mobility state during cell selection such that smallcells are skipped for reestablishment when the UE has high mobility.

Abstract: Concepts and examples pertaining to uplink-assisted mobility procedure in millimeter wave (mmWave) communication systems are described. A user equipment (UE) may receive an uplink (UL) signaling configuration from a source base station (BS) of a wireless network. The UE may periodically transmit a UL reference signal, which are measured by the source BS, in response to receiving the UL signaling configuration. The UE may receive a handover command from the source BS. The UE may also perform a handover procedure with a target BS in response to receiving the handover command from the source BS.

Abstract: Concepts and examples pertaining to efficient coding switching and modem resource utilization in wireless communication systems are described. A processor of a modem of a user equipment (UE), configured with at least a first-capacity decoder and at least a second-capacity decoder, receives a common virtual carrier (CVC), a dedicated virtual carrier (DVC), or both. The CVC contains common information shared by multiple UEs, control information for the UE, and/or data information related to first data destined for the UE. The DVC contains control information for the UE, the first data, or a combination thereof. The first-capacity decoder decodes data of a small size up to a low data rate. The second-capacity decoder decodes data of a large size up to a high data rate. The processor determines whether to decode the first data using the first-capacity decoder or the second-capacity decoder based on the data information in the CVC.

Abstract: A novel and efficient connected mode cell reselection procedure is proposed to improve the mobility performance for user equipments (UEs) configured with extended connected mode Discontinuous Reception (DRX) cycle in LTE systems. A UE-centric mobility mechanism with which a UE performs cell reselection in RRC connected mode is proposed. The UE is allowed to select a target cell without handover signaling in the source cell and when needed to initiate signaling with the target cell, for which signal quality is much better. In this way, handover failures due to failed signaling in the source cell can be avoided. More specifically, the proposed mobility mechanism reduces signaling overhead and is inherently robust towards different DRX cycle settings, i.e., longer DRX cycles do not cause more failures, or more overhead, or more battery consumption.

Abstract: A novel and efficient DRX operation mechanism is proposed to maintain the reliability and energy efficiency for NB-IOT systems. In NB-IOT systems, the length of a NB-PDCCH (with repetition) and the interval between two NB-PDCCHs are extended and can be reconfigured by eNB for each UE. The eNB can also adaptively adjusts the DRX parameters accordingly. NB-IOT UE monitors the NB-PDCCH in DRX ON duration, which is configured in number of NB-PDCCHs. Specifically, if a DRX timer duration is configured by the eNB in units of a PDCCH period, the UE should calculate the timer in terms of number of PDCCH user-specific search spaces (USSs), or in terms of PDCCH subframes by multiplying the number of PDCCH periods with the PDCCH repetition level.

Abstract: A novel and efficient multi-carrier operation mechanism is proposed to maintain the capacity and reliability for NB-IOT systems. First, the functional separation on anchor NB-IOT carrier and data NB-IOT carriers is defined. Transportation of system broadcast information, including synchronization signal (NB-PSS/NB-SSS) and NB-MIB (NB-PBCH) and paging are on anchor carrier, RACH procedure and Data transmission and reception are on data carrier. Second, UE switching between anchor and data carriers. UE on anchor carrier switches to data carrier via paging, RRC signaling or cross-carrier scheduling. On the other hand, UE on data carrier switches back to anchor carrier after transmission or reception complete (right-after or after time-out).

Abstract: A novel and efficient connected mode cell reselection procedure is proposed to improve the mobility performance for user equipments (UEs) configured with extended connected mode Discontinuous Reception (DRX) cycle in LTE systems. A UE-centric mobility mechanism with which a UE performs cell reselection in RRC connected mode is proposed. The UE is allowed to select a target cell without handover signaling in the source cell and when needed to initiate signaling with the target cell, for which signal quality is much better. In this way, handover failures due to failed signaling in the source cell can be avoided. More specifically, the proposed mobility mechanism reduces signaling overhead and is inherently robust towards different DRX cycle settings, i.e., longer DRX cycles do not cause more failures, or more overhead, or more battery consumption.

Abstract: A method of mobility management with smart measurement is proposed. The present invention addresses modifications on RRM measurements as well as mobility control procedures in order to improve mobility performance for UE configured with longer connected mode DRX cycle. Since the poor mobility performance when applying extended DRX cycle mainly results from reduced number of measurements, one solution is to dynamically adjust the measurement interval so as to trigger the measurement reporting in time.

Abstract: A method of extended DRX paging includes a base station that transmits extended DRX configuration information and a User Equipment (UE) receives the extended DRX configuration from the base station. The UE determines a first number of frames that are included in a hyper-frame based at least in part on the extended DRX configuration information and selects a hyper-frame number. The hyper-frame number is based at least in part on the extended DRX configuration information. The UE maintains a hyper-frame count and the hyper-frame count is incremented after each hyper-frame. The UE then goes into sleep mode and the UE determines a wake up time before a standard DRX cycle that occurs during the selected hyper-frame. The UE may also determine a first wake up time and a second wake up time based on the selected hyper-frame number and synchronization error between a first cell and a second cell.

Abstract: An enhanced RRC re-establishment procedure on secondary base station (SeNB) is proposed. A UE with dual connectivity is connected to both a master base station (MeNB) and a secondary eNB (SeNB). The UE performs radio link monitoring (RLM) and radio link failure (RLF) procedures over PCELL served by the MeNB. Once RLF is detected, the UE performs RRC connection reestablishment with a selected cell. From SeNB perspective, the SeNB triggers proactive fetching of UE context from the MeNB to ensure a successful reestablishment. From MeNB perspective, the MeNB provides preference information to the UE for selecting a suitable cell for reestablishment. From UE perspective, the UE considers its mobility state during cell selection such that smallcells are skipped for reestablishment when the UE has high mobility.

Abstract: Systems and methods for downlink scheduling in wireless communications systems are described. In some embodiments, a method includes: applying channel prediction at a transmitter for transmitting information to one or more mobile devices; predicting channel state information for a channel over which the information is transmitted, the channel state information being based, at least, on the channel prediction; determining a precoding matrix to apply to the information, the determining the precoding matrix being based, at least, on predicted channel state information; and scheduling transmission of the information to the one or more mobile devices based, at least, on an asymptotic ergodic rate for the one or more mobile devices. The asymptotic ergodic rate can be based on large-scale channel behavior and a maximum Doppler shift between the mobile devices.

Abstract: The disclosed subject matter relates to dynamic resource management for wireless network components with a wireless communications environment. Personal base stations can be deployed in a substantially uncoordinated manner resulting in conflicts among wireless radio resources. Dynamically assigning subchannel and dynamically allocating power for subchannels can reduce these conflicts. Dynamic resource management can employ combinatorial auction schema such that assignment of subchannels can be considerate of selecting a power level for performance and to minimize overlapping subchannel interference. In an aspect, several methods can be employed to reduce the computational complexity of the general integer programming problem presented. These several methods can include a Combinatorial Auction with Greedy Algorithm scheme, a Random Equal Subchannel Partition scheme, a Local Combinatorial Auction scheme, and a Neighbors' Poor Channels scheme.

Abstract: Systems and methods for downlink scheduling in wireless communications systems are described. In some embodiments, a method includes: applying channel prediction at a transmitter for transmitting information to one or more mobile devices; predicting channel state information for a channel over which the information is transmitted, the channel state information being based, at least, on the channel prediction; determining a precoding matrix to apply to the information, the determining the precoding matrix being based, at least, on predicted channel state information; and scheduling transmission of the information to the one or more mobile devices based, at least, on an asymptotic ergodic rate for the one or more mobile devices. The asymptotic ergodic rate can be based on large-scale channel behavior and a maximum Doppler shift between the mobile devices.

Abstract: The disclosed subject matter relates to dynamic resource management for wireless network components with a wireless communications environment. Personal base stations can be deployed in a substantially uncoordinated manner resulting in conflicts among wireless radio resources. Dynamically assigning subchannel and dynamically allocating power for subchannels can reduce these conflicts. Dynamic resource management can employ combinatorial auction schema such that assignment of subchannels can be considerate of selecting a power level for performance and to minimize overlapping subchannel interference. In an aspect, several methods can be employed to reduce the computational complexity of the general integer programming problem presented. These several methods can include a Combinatorial Auction with Greedy Algorithm scheme, a Random Equal Subchannel Partition scheme, a Local Combinatorial Auction scheme, and a Neighbors' Poor Channels scheme.