Abstract: A semiconductor structure is provided. The semiconductor structure includes a substrate, a channel layer, a barrier layer, a compound semiconductor layer, a gate electrode, and a stack of dielectric layers. The channel layer is disposed on the substrate. The barrier layer is disposed on the channel layer. The compound semiconductor layer is disposed on the barrier layer. The gate electrode is disposed on the compound semiconductor layer. The stack of dielectric layers is disposed on the gate electrode. The stack of dielectric layers includes layers having different etching rates.

Abstract: Disclosed are systems and methods for improving front-side process uniformity by back-side doping. In some implementations, a highly conductive doped layer can be formed on the back side of a semiconductor wafer prior to certain process steps such as plasma-based processes. Presence of such a back-side doped layer reduces variations in, for example, thickness of a deposited and/or etched layer resulting from the plasma-based processes. Such reduction in thickness variations can result from reduced variation in radio-frequency (RF) coupling during the plasma-based processes.

Abstract: A system and methods for operating a multi-robot system (MRS) are disclosed. In some aspects, each robot of the MRS can: determine a local system regret state belief based on local evidence obtained by the robot itself and social evidence provided by other robots in a social community, determine a local system drift state belief based on the local system regret state belief, determine a next action based on the based on the local system regret state belief and the local system drift state belief, and execute the next action. Local system regret state belief is generally an estimation of a system regret state for the MRS. Local system drift state belief is generally an estimate of a system drift state for the MRS.

Abstract: This application discloses a wireless communication method, including: receiving, by a network device, uplink transmission of a first terminal in first duration of channel occupancy duration of the first terminal, where the channel occupancy duration of the first terminal further includes second duration, and the second duration is later than the first duration; and performing, by the network device, downlink transmission in the second duration, where a sum of the first duration and the second duration is less than or equal to the channel occupancy duration of the first terminal. This application further discloses a network device and a terminal that correspond to the wireless communication method. By applying the method and devices, a resource obtained through contention by a terminal applied to an unlicensed frequency band can be properly used, to improve operating efficiency of the unlicensed frequency band.

Abstract: Task assignment for multi-robot systems (MRSs) in a smart factory (Industry 4.0) is described. Aspects are directed to a hypergraph based MRS and production model facilitating the cooperation among robots and serving frequent reconfiguration desired in Industry 4.0. Aspects are directed to a time complexity friendly search algorithm for real-time application using a hypergraph model to get task assignment(s). Parameters are provided for a tradeoff between solution optimality and time complexity. In an implementation, a system comprises a MRS comprising robots, wherein the MRS is configured to perform a manufacturing task, and a computing device configure to perform a multi-robot task allocation (MRTA) for the MRS. In an implementation, a method comprises generating task assignments, using MRTA, for robots of a MRS comprising the robots, wherein the MRS is configured to perform a manufacturing task, and providing the task assignments to the MRS.

Abstract: The application discloses a wireless communication method that includes receiving, by a network device, uplink transmission of a first terminal in a first duration of channel occupancy duration of the first terminal. The channel occupancy duration of the first terminal further includes a second duration, and the second duration is later than the first duration. The network device performs downlink transmission in the second duration, where the sum of the first duration and the second duration is less than or equal to the channel occupancy duration of the first terminal. The method provides an efficient use of resources obtained through contention in an unlicensed frequency band.

Abstract: A system and method for applying supervised learning to model a second wireless channel environment based upon data collected for a first wireless channel environment. In various embodiments, regression techniques are used to overcome known channel modeling issues. Using the data of one particular communication environment, it is possible to predict a path loss model of a different communication environment. As such, the required number of measurements and the complexity of the model prediction is greatly reduced.

Abstract: A cooperative precoding method, applied in a communication system comprising a coordinating device and multiple serving stations, is provided. The cooperative precoding method includes the following steps: the coordinating device obtaining multiple carrier frequency offset (CFO) parameters of the serving stations with respect to a user device; generating multiple cooperative encoded sequences; assigning the cooperative encoded sequences to the serving stations, respectively, according to an order of the plurality of CFO parameters; and the plurality of serving stations transmitting the cooperative encoded sequences, respectively, to the user device. Each cooperative encoded sequence is transmitted over multiple subcarriers.

Abstract: A cooperative precoding method, applied in a communication system comprising a coordinating device and multiple serving stations, is provided. The cooperative precoding method includes the following steps: the coordinating device obtaining multiple carrier frequency offset (CFO) parameters of the serving stations with respect to a user device; generating multiple cooperative encoded sequences; assigning the cooperative encoded sequences to the serving stations, respectively, according to an order of the plurality of CFO parameters; and the plurality of serving stations transmitting the cooperative encoded sequences, respectively, to the user device. Each cooperative encoded sequence is transmitted over multiple subcarriers.

Abstract: This application discloses a wireless communication method, including: receiving, by a network device, uplink transmission of a first terminal in first duration of channel occupancy duration of the first terminal, where the channel occupancy duration of the first terminal further includes second duration, and the second duration is later than the first duration; and performing, by the network device, downlink transmission in the second duration, where a sum of the first duration and the second duration is less than or equal to the channel occupancy duration of the first terminal. This application further discloses a network device and a terminal that correspond to the wireless communication method. By applying the method and devices, a resource obtained through contention by a terminal applied to an unlicensed frequency band can be properly used, to improve operating efficiency of the unlicensed frequency band.

Abstract: The present disclosure provides a receiver. The receiver comprises an antenna, configured to receive a received signal on a downlink direction, wherein the received signal comprises an interfering downlink signal and a desired downlink signal; and a detecting circuit, coupled to the antenna, configured to perform a multiuser detection operation on the received signal on the downlink direction to generate a detected interfering signal and a detected desired signal; wherein the desired downlink signal is transmitted by a first station, intended for the receiver, and generated according to a first modulation order; wherein the interfering downlink signal is transmitted by a second station, intended for a second receiver other than the receiver, and generated according to a second modulation order.

Abstract: The present disclosure provides a receiver. The receiver comprises an antenna, configured to receive a received signal on a downlink direction, wherein the received signal comprises an interfering downlink signal and a desired downlink signal; and a detecting circuit, coupled to the antenna, configured to perform a multiuser detection operation on the received signal on the downlink direction to generate a detected interfering signal and a detected desired signal; wherein the desired downlink signal is transmitted by a first station, intended for the receiver, and generated according to a first modulation order; wherein the interfering downlink signal is transmitted by a second station, intended for a second receiver other than the receiver, and generated according to a second modulation order.

Abstract: The disclosure provides a method including the following steps: receiving, by an electronic device, beacon signals transmitted from access points, and estimating the number of the access points according to the beacon signals; determining by the electronic device whether the electronic device can connect to a base station; when it is determined that the electronic device cannot connect to the base station, estimating the number of connection access points according to the number of the access points and a first data queue by the electronic device; and when it is determined that the electronic device can connect to the base station, determining by the electronic device whether to connect the electronic device to the base station according to the first data queue, and estimating the number of the connection access points according to the number of the access points, the first data queue and a determination result.

Abstract: A method is to process packets in a wireless communication system including an evolved core network, a plurality of user devices, and an evolved node B (eNB), the evolved core network including a policy and charging rules function (PCRF), a serving gateway, a caching management gateway and a mobile management entity (MME). The method includes receiving, via the PCRF, the packets; obtaining, via the MME, an user device number; estimating, via the caching management gateway, a connectivity parameter corresponding to the user devices; generating, via the caching management gateway, a decision result according to popularities and sizes of the packets, the user device number and the connectivity parameter; and instructing, via the serving gateway, the eNB and the user devices to cache the packets according to the decision result.

Abstract: The present invention relates to a resource allocation apparatus, resource allocation method, and non-transitory computer readable medium thereof. The resource allocation apparatus adapted for a network comprising a femto base station (BS) which communicates with the femto BS and includes a storage, a transceiver and a processor connected to the storage and the transceiver. The storage stores a random function, reuse information and fractional frequency reuse (FFR) information which records an original cell ID/frequency corresponding relation of an unoccupied partition of the network.

Abstract: The present invention relates to a subscriber station, resource allocation method, and non-transitory computer readable medium thereof. The subscriber station using in a femtocell network comprises a receiving interface and a processor. The receiving interface receives a frame of the femtocell network. The processor, electrically connected to the receiving interface, blindly decodes a first logical frequency resource unit (LRU) of a frequency partition of the frame to obtain an allocation message, determines the allocation message is relative to the subscriber station, and proceeds a data transmission in the femtocell network according to the allocation message.

Abstract: A communication apparatus including a physical information recognizing module, an MAC information recognizing module, a coordinating module, and a re-configurable transmitting/receiving module is provided. The physical information recognizing module recognizes a set of physical information relative to at least one communication network. The MAC information recognizing module recognizes a set of MAC information relative to the at least one communication network. The coordinating module generates a set of control signals selectively based on the set of physical information and the set of MAC information. The re-configurable transmitting/receiving module is configured according to the set of control signals and is used for transmitting/receiving data via the at least one communication network.

Abstract: A method of handling resource arrangement for a first base station of a wireless communication system is disclosed. The method comprises obtaining channel information of a channel corresponding to a resource block from a measurement, a relay node of the wireless communication system or a second base station of the wireless communication system, wherein the resource block is identified by a time period and a frequency bandwidth; and arranging the resource block to a mobile device in the wireless communication system according to the channel information of the channel.

Abstract: A method comprises receiving power information transmitted by a plurality of mobile devices in a wireless communication system; processing the received power information to be a result of unknown power information multiplied by a measurement matrix relating to positions of the plurality of mobile devices, wherein a number of columns of the measurement matrix is larger than a number of rows of the measurement matrix; generating an amendment matrix satisfying restricted isometry property (RIP), for processing the measurement matrix, and obtaining a modified measurement matrix satisfying the RIP according to the amendment matrix and the measurement matrix; obtaining estimated power information according to the received power information by using L1 norm and the modified measurement matrix; and constructing at least one spectrum map of at least one frequency band according to the estimated power information.

Abstract: A co-existing multi-radio system and a method of establishing the same are provided. The co-existing multi-radio system includes a base station system and at least one first mobile device. The first mobile device and the base station system operate in a same communication environment. The first mobile device is capable of sensing a set of information associated to the communication environment, followed by analyzing the set of information and self-reconfiguring so as to communicate with another first mobile device and/or the base station system.