203 results about "Effective capacity" patented technology

A method, wireless device and computer program product for expanding the coverage of a cellular network. A wireless device (e.g., cellular telephone) is able to communicate with a base station in a cell of the cellular network over a non-cellular interface via another wireless device in the cell through the use of multi-hopping. A wireless device may request permission to communicate with the base station over a non-cellular interface via hopping off another wireless device when its signal strength is below a threshold. Alternatively, a wireless device may receive a request to communicate with the base station over a non-cellular interface via hopping off the wireless device that sent the request when that wireless device has excess capacity in its bandwidth with the base station. By enabling wireless devices to communicate with a base station in such a manner, the effective coverage area of the cellular network is expanded and the effective capacity of the cellular network is improved.

A method, wireless device and computer program product for expanding the coverage of a cellular network. A wireless device (e.g., cellular telephone) is able to communicate with a base station in a cell of the cellular network over a non-cellular interface via another wireless device in a cell through the use of multi-hopping. A wireless device may request permission to communicate with the base station over a non-cellular interface via hopping off another wireless device when its signal strength is below a threshold. Alternatively, a wireless device may receive a request to communicate with the base station over a non-cellular interface via hopping off the wireless device that sent the request when that wireless device has excess capacity in its bandwidth with the base station. By enabling wireless devices to communicate with a base station in such a manner, the effective capacity of the cellular network is expanded and the effective capacity of the cellular network is improved.

The invention discloses a traffic control method for dynamic coordination according to effective capacity of a road section. The method comprises the following steps of: first, proposing an effective bandwidth evaluation method to monitor the running state and the control effect of the existing trunk-road green-wave coordinating and controlling system; and second, learning from a TCP/IP (Control Protocol / Internet Protocol) window flow control thought, and designing a window-flow-controlled trunk-road dynamic coordinating and controlling method to control the crowed traffic flow of urban trunk roads. Simulation tests and compared results show that a downstream intersection can inform the effective capacity of the road section to an upstream intersection in real time in a mode of a window flow notice, and a traffic signal machine of each intersection can conveniently redistribute the green time of each traffic flow according to the current traffic demand and the effective capacity of the road section to avoid the overlong green time to cause queuing vehicles in the road section to overflow.

The invention provides a safety cognitive radio network power distribution method capable of ensuring time delay QoS requirement, and belongs to the technical field of wireless communication. The method is that the safety cognitive radio network with a side channel is used as a system model, and a spectrum-sharing mode of the cognitive radio network is used as a communication mechanism, the optimal problem of maximizing the effective safety capacity under the limitation of the emission power and the interference power is planned on the basis of a safe and effective capacity cross-layer model; the optimal antithesis factors are obtained through the lagrangian duality theory, so as to obtain the optimal emission power, and the optimal power distribution can be achieved. With the adoption of the method, the safety cognitive radio network meets the requirement of the upper layer user service quality (time delay QoS), and the optimal system safety performance and efficient utilization of the physical layer resource are achieved; the system is of important theoretical significance and practical significance.

The invention discloses a method and a device for estimating the state of charge of a battery. The method comprises the following steps: fitting the pre-acquired discharge experiment data under different rates to obtain a function relationship between the discharge rates of the battery and the actual effective capacity values of the battery, establishing the state space model of a battery system by use of the function relationship, and determining the state of charge (SOC) of the battery in a genetic resampling particle filtering manner in the state space model. The state space model comprises the state equation for identifying the state of charge (SOC) of the battery and an observation equation. According to the method, the SOC is estimated in the particle filtering manner, the advantages of particle filtering in solving nonlinear problems are utilized thoroughly, and the problem of particle degeneracy of the particle filtering algorithm is inhibited by virtue of resampling; furthermore, the genetic algorithm is introduced in the resampling process so that the diversity of particles can be remained and the SOC estimation accuracy can be effectively improved.

The invention discloses a method used for regulating the storing capacity of a holder rapidly and steplessly, which relates to a method used for regulating the storing capacity of a leaf (or cut) tobacco holder system in the tobacco industry. The steps for controlling the holder storing capacity rapidly and steplessly are as follows: 1) arranging a laser distance sensor at the discharging end of the distributor rail of the holder and a reflecting plate on the distributor; 2) inputting a set value of spread material length into the control system of a computer; 3) transmitting the instant actual distance information measured by the laser range sensor to the control system of the computer; 4) the control system of the computer compares the set value of burden distribution length and the instant actual distance measured by the laser range sensor and then controls the running of the distributor; repeating the steps of 3) and 4) and running repeatedly and cyclically until the spread material of the holder is finished. The method of the invention has the advantages of simplicity and feasibility, high precision of distance measurement, flexible using and convenient operation. The effective capacity of the holder can be regulated discretionarily and steplessly from 0% to 100%, and the method can meet the need of flexible production.

The invention discloses a power distribution method for a full-duplex relay network in a nonideal channel state, and belongs to the technical field of wireless communication. The method gives consideration to a safe and effective capacity model in a full-duplex multi-carrier safety system with an intercept unit. A resource distribution task in a safety network of a full-duplex multi-carrier relay is completed through a robust full-duplex relay loop interference channel state information method. Therefore, the method achieves the planning of optimization problems of power limit, affected by the total power and the loop of the full-duplex relay, and safe and effective capacity maximization. The method solves an optimal dual factor through a Lagrange duality theory, so as to achieve the optimal power distribution strategy. The optimal power distribution method enables the full-duplex relay network in the nonideal channel state to meet the requirements of upper users for quality of service (time delay QoS), and also achieves the optimal safety performance and the high-efficiency utilization in a supposed channel state information error range.

The invention relates to a power distribution method for a full-duplex multi-carrier safety system based on QoS requirements, belonging to the technical field of wireless communication. In the full-duplex multi-carrier safety system including interception, a spectrum sharing mode is used as a communication mechanism; on the basis of the safety effective capacity, upper-layer user QoS limitation (time delay QoS) is introduced through a cross-layer joint optimization method; furthermore, in the event that different time delay QoS limitations are satisfied, requirements of performance optimization and resource utilization maximization of the full-duplex multi-carrier safety system are satisfied; therefore, the optimization problem of maximizing the safety effective capacity under the limitation of the total power and the full-duplex relay loop interference power is planed; and optimal dual factors are obtained through a Lagrangian duality theory, such that an optimal power distribution task is realized. By means of the optimal power distribution method, the full-duplex multi-carrier safety system satisfies requirements of the upper-layer user QoS (time delay QoS) requirements, and particularly realizes the optimization of the system safety performance and the high efficiency of physical layer resource utilization.

The invention provides a random production analog method of an electric system with a large-scale photovoltaic power station. The method includes the following steps that conventional unit data, light resource data and time sequence load data are acquired; the equivalent effective capacity cumulant of all orders of a system unit without the photovoltaic power station is determined; time sequence effective capacity probability distribution Beta models and parameters of photovoltaic power generation at corresponding time frames are sequentially acquired; equivalent effective capacity distribution probability models and parameters of the system unit with the photovoltaic power station at corresponding time frames and reliability indexes under the corresponding load levels are sequentially obtained; and the reliability indexes of the system under the total load level are obtained in a hop-by-hop accumulation mode. The method relates to correlation on the time sequence between photovoltaic power station output and the load change, random fluctuation of the photovoltaic power station output is contained in system equivalent effective capacity probability distribution through cumulant correction, and the method is used for acquiring the reliability indexes of the system under the corresponding running modes.

The invention relates to a washing machine with inertial stream and belongs to the technical field of washing equipments. A fixed opening inside a machine body of the washing machine is opened upward and forms an outer barrel with a water space, a reversible rotary inner barrel which is driven by an electric motor is contained and arranged inside the outer barrel, a group of corresponding upper and lower supporting elements of an upper part and a lower part of an inner wall of the inner barrel respectively extend towards a middle part of the inner barrel, and agitating rods are respectively arranged between the corresponding upper and lower supporting elements. The washing machine of the invention can generate powerful washing force thus remarkably improving detergency degree, has simple and compact structure, and can increase effective capacity of the washing barrel.

The invention provides an effective-capacity-based resource allocation method in a cognitive radio system. The method includes the following steps: a cognitive user in the cognitive radio system perceives a channel and a transmission scheme of the cognitive user is determined according to the perception result; according to the transmission scheme, an effective capacity in the cognitive radio system is obtained and under a condition that an average power is limited, the effective capacity is optimized; and through application of a gradient descent method, a dual problem of an optimization problem is solved so that an optimal power allocation strategy is obtained. Compared with a traditional equipower scheme, the effective-capacity-based resource allocation method enables the performance of the system to be improved and the QoS guaranteeing capability of the system to be improved; and under a multi-channel scenery, the method is capable of providing reliable QoS guarantee to the cognitive user and capable of improving the frequency spectrum utilization rate of the system.

A set-associative architecture (IPStash) restricts routing table prefixes to a limited number of lengths using a controlled, prefix-expansion technique. Since this inflates the routing tables, skewed associativity can be used to increase the effective capacity of IPStash. In addition, pruning of redundant entries can be applied to decrease the size of the expanded tables. Compared to previous proposals, IPStash does not require any complicated routing table transformations but, more importantly, it makes incremental updates to the routing tables effortless. IPStash is also easily expandable. IPStash is both fast and power-efficient compared to TCAMs. Specifically, IPStash devices built in the same technology as TCAMs can run at speeds in excess of 600 MHz, offer more than twice the search throughput (>200 Msps), and consume up to 35% less power (for the same throughput) than the best commercially available TCAMs when tested with real routing tables and IP traffic.

The invention discloses a power distribution scheme based on the maximum effective capacity and applied to a wireless multi-antenna virtual MIMO. The power distribution scheme is characterized in that for an MIMO system in a wireless network, the power control technology is applied to new users, the interference from the new users in existing users is limited to be kept at an acceptable level, and therefore the effective capacity of the existing users is guaranteed; through optimization of the guarantee of QoS in a cooperative V-MIMO, the power distribution scheme driven by the QoS of the new users is obtained; for a half-duplex/ full-duplex system of the cooperative V-MIMO in the wireless network, the problem of optimization of the guarantee of QoS in the cooperative V-MIMO is established to be a strict convex optimization problem. According to the power distribution scheme based on the maximum effective capacity and applied to the wireless multi-antenna virtual MIMO, the optimal power distribution scheme supporting statistics of the QoS in the non-cooperative/cooperative V-MIMO system in the wireless network is promoted, the effective capacity of the new users can be maximized, the effective capacity of the existing users can also be guaranteed, and the power distribution scheme for the non-cooperative/cooperative V-MIMO system is evaluated through simulation.

A method in which a network apparatus 210 transmits a single assignment message comprising common assignment information directed to plural wireless terminals. The single transmitted assignment message can be used to enable channel assignment to be initiated for the plural wireless terminals, thus making more efficient use of the assignment message. This may be advantageous when a channel via which the assignment message is transmitted has a lower communication capacity than a channel via which the requests are received. In a GERAN communications system (100, FIG. 1), the effective capacity of the access grant channel can be doubled or tripled, acting to reduce congestion. This increases the probability of a wireless terminal receiving a response to a channel request which it sends. The probability of a successful data transfer following a channel request is thereby increased. Other aspects, embodiments, and features are also claimed and described.

The invention discloses a resource distribution method for a relay network with energy harvesting nodes based on a QoS demand and belongs to the technical field of wireless communication. According to the method, a relay network system is employed. The system comprises a sending end, a receiving end and a relay node. The sending end and the relay node can harvest energy and communicate through utilization of the harvested energy. In communication at the relatively long distance, in order to improve the communication security and reliability and reduce the problems such as the communication interference, a relay technology is employed. According to the resource distribution method for the relay network researched by the invention, the energy harvesting and the relay technology are combined, system resources namely subcarriers and the power are jointly distributed, so the effective capacity is maximized in the communication process of the relay network, and the communication performance is improved.

The invention relates to a W1MAX network switching method based on system capacity, belonging to the technical field of wireless network. The W1MAX network switching method comprises the following steps: currently maximum effective capacity of a base station is calculated; the base station informs a mobile terminal currently idle capacity of all neighbors by broadcast messages of the neighbors; the neighbor broadcast messages are used as carriers to update effective idle capacity of the current base station and the adjacent base stations dynamically to the mobile terminal; when the capacity of the current base station and the adjacent base stations meets the conditions of switching and triggering, the mobile terminal starts switching and scanning of the cell; the mobile terminal selects a target cell and carries out cell switching according to the cell decision strategy. Compared with the prior art, the W1MAX network switching method can improve the switching performance of the mobile terminal in the W1MAX network, thus improving the throughput of the whole network and reducing packet loss.

The invention discloses a rapid charging method of a lithium ion battery, which uses step charging; the method comprises at least two charging steps and one discharging step, wherein after the first charging step is finished, the discharging step is carried out once and then the second charging step is carried out; upper and lower voltage limits of the second charging step are higher than or equal to those of the first charging step; after each charging step is finished, the battery stands for a section of time; and when open-circuit voltage drop is less than one value after one charging step is finished, the charging is stopped. Through the adoption of the rapid charging method disclosed by the invention, the effective capacity of the battery is increased and the cycle life of the battery is prolonged.

The invention discloses a calculating method of effective capacity of road sections. The calculating method includes putting forward an effective bandwidth evaluation method to monitor the running status and the control effect of an existing artery green wave coordinated control system; and using transmission control protocol/ internet protocol (TCP/ IP) window flow control thought for reference to design a artery dynamic coordinated control method of the window flow control to control congested traffic flow of city arteries. Simulation tests and comparison results prove that downstream intersections can inform upstream intersections of the effective capacity of the road section in real time through a window flow notice mode, traffic signal controllers at each intersection can redistribute the green time of each traffic flow according to current traffic requirements and the road section effective capacity, so that road section queue and vehicle overflow caused by excessive distributed green time can be avoided.

The invention relates to a block access-based flash reading and writing method. The method comprises the following steps of: 1, scanning physical blocks of the flash to acquire corresponding page status tables of the physical blocks; 2, acquiring a partition physical block numbering table; 3, acquiring a partition capacity table of partitions according to the number of partition physical blocks and the number of corresponding effective pages; 4, determining the serial number of the partition accessed by an application layer and the offset in the partition according to the partition capacity table; 5, acquiring the virtual block number and virtual page number of the partition through the offset according to the number of effective pages of the physical blocks in the partition; and 6, acquiring the serial numbers of the physical blocks according to the virtual block number along with the partition physical block numbering table, and acquiring the physical page numbers of the effective pages according to the virtual page number along with the page status table of the physical block. By mapping the physical layers with ineffective pages into a continuous linear storage medium, the effective capacity of the storage medium is maximally extended.

This application provides a discharge control method of a lithium ion battery pack, which includes the steps of: sampling and detecting single-cell voltage of the battery pack to calculate minimum value of the single-cell voltage; when the minimum value of the single-cell voltage reaches preset discharge terminal voltage of the single cell, controlling a load to switch a discharge circuit off to stop discharging. Compared with a method in which the discharge terminal voltage of the battery pack is set manually in the prior art, the voltage management method can prolong the discharge time of the battery as more as possible, can increase the effective capacity of the battery, and prevents capacity attenuation of the lithium ion battery due to over-discharge of the single cell and prevents reduction of cycle life.

The invention provides a solid state disk and an access control method thereof, and a solid state disk controller. The solid state disk controller comprises a host interface unit, a buffer unit, a storage interface unit and a compression/decompression unit, wherein the host interface unit is connected to a host, receives data from the host and sends data to the host; the buffer unit is connected to the host interface unit, and provides buffer for data transmission between the host interface unit and the compression/decompression unit; the compression/decompression unit is connected to the buffer unit, compresses data transmitted by the host to a storage unit, and decompresses data transmitted by the storage unit to the host; and one end of the storage interface unit is connected to the compression/decompression unit, while the other end is connected to the storage unit of the solid state disk for read-write operation on the storage unit. The effective capacity of the solid state disk is increased under the condition that the physical capacity of the solid state disk is fixed.

The invention relates to a negative pole piece for a lithium-ion battery and a preparation method of the negative pole piece. The negative pole piece comprises a current collector and an active material coating, wherein the active material coating coats the surface of the current collector; an SEI film coats the surface of the active material coating and contains a lithium salt material; and the preparation method comprises the step of coating the surface of the active material coating with the lithium salt material through a physical vapor deposition method to form the SEI film. The negative pole piece solves the problem that the effective capacity is reduced due to a formation procedure; the chemical properties of the gram capacity, the rate, the initial efficiency and the like of the battery material are improved; and meanwhile, the safety performance of the battery is improved.