36 results about "Remote access unit" patented technology

A system and a method for money sharing are provided. The system includes a processor configured to receive a deposit amount and assign an account value to a stored-value account. The stored-value account is stored in a storage device. The processor then dispenses two or more stored-value cards associated with the stored-value account. The stored-value cards can be distributed among two or more cardholders who may withdraw money from the stored-value account at a remote access unit configured to accept any of the distributed stored-value cards associated with the same account. Additional deposit amount can be received into the stored-value account from a cardholder of any distributed stored-value cards associated with the same account. The remote access unit can be unattended. The cards can be ATM-enabled.

A thermostat control system for monitoring and controlling environmental characteristics of a building includes a base station unit and a remote access unit continuously interfacing through instant wireless private direct connectivity. The system also includes a plurality of sensors that measure the environmental characteristics and provide the thermostat unit with the measurements.

An optical network is provided. The optical network includes a station to convert a downstream radio frequency (RF) signal to a downstream optical signal and convert an upstream optical signal to an upstream RF signal; and a remote access unit (RAU) to convert the downstream optical signal to a downstream RF signal and to convert the upstream RF signal to the upstream optical signal, wherein the RAU determines a non-transmission band portion on which data is not carried from the downstream RF signal and inputs upstream data in the non-transmission band.

A remote access unit (RAU) apparatus, coupled to a central station (CS) of an RoF network through at least one optical fiber, and which RAU apparatus includes at least one antenna, includes: first and second antenna ports coupled to the at least one antenna; first and second optical fiber ports coupled to the at least one optical fiber; a first coupler for decoupling a first downstream signal of a first duplexing method and a second downstream signal of a second duplexing method, which are input through the first optical fiber port; a circulator for outputting the first downstream signal input from the first coupler to the first antenna port and outputting a first upstream signal of the first duplexing method input from the first antenna port to the second optical fiber port; and a second coupler for outputting the second downstream signal input from the first coupler to the second antenna port and outputting a second upstream signal of the second duplexing method input from the second antenna port to the second optical fiber port.

Apparatuses and methods for attaching a minimal access tool to a user's boy (e.g., wrist or forearm) so that movements of the user's forearm, wrist, hand and fingers can control movements at a distal end of the minimal access tool. In particular, described herein are forearm attachment devices (which may be used with or integrated into) a minimal access tool including a cuff configured to secure to the user's forearm and a coupling joint configured to connect the cuff to the frame so that the cuff may move relative to the frame with between 1 and 4 degrees of freedom.

Disclosed is a remote access unit for transmitting and receiving upstream and downstream data in which channels having different transmission scheme are multiplexed, and an optical network for bi-directional wireless communication using same. The remote access unit includes an antenna for receiving the downstream data and wirelessly transmitting same and for receiving the upstream data and providing same to the remote access unit, a switch for outputting downstream time division channels of the downstream data to the antenna and for receiving upstream time division channels of the upstream data from the antenna, and a controller for controlling the switch in order to prevent the upstream and downstream time division channels from overlapping.

The invention provides a densely-distributed wireless network dynamic pilot multiplexing channel estimation and pilot frequency distribution method. The method includes that RAUs (remote access units) are densely distributed in a small cell and connected through a high-speed backhaul link and a central processing unit, and multiple users perform wireless communication with the neighboring RAUs on a same time-frequency resource; under the situation that pilot resources are limited, pilot frequency is multiplexed on the same time-frequency resource according to large-scale fading channel information of users, and the dynamic multiplexing channel estimation is implemented according to variation of system parameters; the central processing unit distributes pilot frequency information for dispatching users by the aid of the acquired large-scale fading channel information; the dispatching users transmit pilot frequency information dispatched thereto, the RAUs estimate channel parameters and counts channel estimation errors according to different pilot frequency multiplexing factors and finally design an uplink receiver and downlink transmission precoding. The densely-distributed wireless network dynamic multiplexing channel estimation and pilot frequency distribution method has the advantages that the densely-distributed wireless network is high in spectrum effectiveness, high in power efficiency and low in required pilot frequency cost.

The invention provides an indoor coverage system. The system comprises a baseband backup unit (BBU), a radio remote unit (RRU), a proximal control unit, an expansion unit, a remote access unit, a power divider, a coupler, a feeder cable, a connector and an antenna, wherein the BBU is connected with the RRU through an optical fiber; the RRU is connected with the proximal control unit through an optical fiber; the proximal control unit is connected with the extension unit through an optical cable; the expansion unit is connected with the remote access unit through an optoelectronic composite cable; output ports of the power divider and the coupler are connected with the feeder cable; the feeder cable is laid indoors and outdoors; an indoor antenna is fixed to the feeder cable and close to anindoor user; and an outdoor antenna is fixed to a roof and outdoor wall. Thus, a wireless network forms best coverage indoors; an indoor user can absorb more traffics; and the utilization rate of wireless network resources is increased.

The invention discloses a densely distributedwireless communication method and system. Distributed remote access units (RAUs) are densely distributed in each cell in wireless communication, users in the same cell can send detection signals by using different time-frequency resources, and a center processing unit of each cell acquires statistic channel information of the users in the cell and statistic channel information of users in marginal areas of an adjacent cell according to the received detection signals; each cell determines the users in the marginal areas of the cell and RAU sets and interacts with the statistic channel information of the users in the marginal areas of the adjacent cell; with the adoption of the obtained statistic channel information, the adjacent cell firstly schedules the users in the marginal areas and the RAUs of the users in the marginal areas, then schedules the users in respective cells and the RAUs of the users in the respective cells and sets the unscheduled RAUs to be in a sleep mode; and finally, the users perform wireless communication of the same time-frequency resource on the selected RAU sets. The densely distributed wireless communication method and system have the advantages of low processing complexity, high handling capacity and low required energy consumption about system signals.

The invention discloses an energy efficiency and spectral efficiency balance optimization algorithm in a distributed antenna system. After carrying out remote access unit (RAU) selection in the condition of known user number and positions, system energy efficiency and spectral efficiency are optimized preliminarily. Then the Cobb-Douglas production function is introduced, the energy efficiency and spectral efficiency are considered at the same time, the Lagrange duality theory and the Kuhn-Tucker condition are applied to solve an approximate solution, finally a subgradient iteration algorithm is applied, a Lagrange multiplier and the transmission power approximation value of each RAU are updated in each time of iteration until the convergence of a transmission power value and the Lagrange multiplier, and power distribution at that time is an approximation value of a global optimal solution of the optimization of energy and spectral efficiency at the same time. Through taking different preference factors, the energy and spectral efficiency can be flexibly balanced, and an effect of optimizing the energy efficiency and spectral efficiency at the same time is achieved.

The invention discloses a power distribution method. The power distribution method comprises the steps of acquiring channel state information between a user terminal and a remote access unit; obtaining target power corresponding to the channel state information according to a preset mapping relationship between the channel state information and the power; and changing the transmitting power of theantenna corresponding to the user terminal into the target power. The invention further provides a remote access unit, a distributed antenna system and a medium. According to the invention, the powerdistribution of the remote access unit to the user terminal is reasonable.

The embodiment of the invention relates to a method, a device and a system for determining remote access units, wherein the method for determining remote access units comprises the following steps: acquiring maximum throughput which can be provided for a mobile terminal by a remote access unit of a source cell, the maximum throughput which can be provided for the mobile terminal by the remote access unit of a target cell, as well as the maximum throughput which can be provided for the mobile terminal by the combination of the remote access units of the source cell and the target cell respectively; and determining the remote access unit which provides service for the cell switching of the mobile terminal according to switching protection threshold and the acquired maximum throughput which can be provided for the mobile terminal. Based on the principle of the maximum throughput, the method, the device and the system for determining remote access units can enable the mobile terminal to have the maximum throughput while the mobile terminal is switched between adjacent DAS cells, and enable the mobile terminal to be smoothly switched between the adjacent cells by setting the reasonable switching protection threshold.

The invention discloses a method for testing tested software of a LINUX end on the basis of a test tool of a WINDOWS end. The method includes the steps of firstly, configuring a file sharing unit anda remote access unit on the LINUX end, then modifying a configuration file on the LINUX end so that a computer of the WINDOWS end can run instructions of a computer of the LINUX end, and mapping a network disk through a resource manager on the WINDOWS end so that the test tool of the WINDOWS end can access to the tested software and a test result file of the LINUX end through hard disk characters. The method has the advantages of simple configuration and no influence on the basic flow of the test.

The invention discloses a semi-dynamic overlapping clustering algorithm for a densely distributed wireless communication system, which comprises the following steps that: firstly, a central processingunit performs semi-dynamic non-overlapping clustering on a remote access unit (RAU) by utilizing periodically acquired long-time information state information under the condition of limiting the cluster size; secondly, cluster edge users are found out by setting a threshold value; thirdly, average large-scale fading from each cooperative cluster to edge users of the cluster and other clusters iscalculated, and overlapped users are found out through a ratio; and finally, each cooperative cluster performs joint transmission on users in the cluster and avoids interference on overlapped users atthe same time, so that a virtual overlapped cluster is formed. The algorithm takes the user as the center, utilizes the long-time channel information to perform overlapping clustering, can adapt to the movement change of the user position, improves the service quality of cluster edge users, improves the system throughput, and has the advantages of being low in algorithm complexity and small in signaling overhead.

The embodiment of the invention relates to an ISR (Interrupt Service Routine) processing method in a CSFB scenario, belonging to the communication field. The method comprises the following steps of: receiving a routing area refresh request message of CSFB-activated user equipment (UE); confirming whether the location area of the UE is changed or not; and if so, indicating that the UE does not activate the ISR. The embodiment of the invention also relates to ISR processing device and system in a CSFB scenario and realizes that an SGSN (Service GPRS Supporting Node) can accurately judge whetherto activate the ISR based on the condition that whether the location area is changed or not, solves the problem that the SGSN accurately decides whether to activate the ISR when the UE initiates a single RAU (Remote Access Unit) in the CSFB scenario, improves the ISR performance in the CSFB scenario, and ensures the service experience of users.