200results about How to "Reduce system overhead" patented technology

A method for transmitting burst allocation information by a base station in a broadband wireless communication system in which a transmitted frame includes symbols, and orthogonal subcarriers in a frequency axis constitute each of the symbols based on a predetermined time unit. The method includes the steps of generating a reduced connection identifier (CID) by reducing a basic CID of a mobile terminal connected to the base station when the basic CID exists within a preset range, and inserting an MAP, which includes an enabled field representing the reduced CID and one of use and non-use of the reduced CID, into the frame, and transmitting the frame to the mobile terminal.

A data storage system includes a storage device divided into a plurality of blocks for storing data for a plurality of volumes, and a processor to execute instructions for maintaining a block map corresponding to the data stored on the storage device. The storage system may be part of a storage system network. The block map stores reference data indicating which of the volumes reference which blocks on the storage device, and which blocks on the storage device are unallocated. The reference data may include, for groups of one or more blocks, a first value identifying the oldest volume in which the group of blocks was allocated and a second value identifying the newest volume in which the group of blocks was allocated. The volumes may include one or more snapshots.

Disclosed is a system and method for allocating and indicating a ranging region in which a base station (BS) allocates and indicates a ranging region in a broadband wireless access (BWA) communication system. The method includes: ranging region allocation and change indication information in a first region of every downlink frame; determining whether to include information necessary for performing ranging in a broadcast message that is broadcast through a second region of every downlink frame according to the ranging region allocation and change indication information; and allocating a ranging region in an uplink frame according to the ranging region allocation and change indication information.

Disclosed is a method of managing an X2 interface, a handover method, an interference coordination method and an apparatus for LTE and LTE-Advanced system. X2 interface management includes: finding by a first eNB, a new neighboring cell, i.e., a second cell corresponding to a second HeNB; determining by the first eNB, an access mode of the second cell; and establishing a first X2 interface between the first eNB and the second HeNB when the access mode of the second cell is an open mode or a hybrid mode. The X2 interface may be managed dynamically and the mode for establishing the X2 interface, such as direct X2 interface or gateway-proxied X2 interface, may be selected. The expansible problem and system overhead due to the X2 interface in the LTE and LTE-Advanced system may be reduced effectively to better support handover and interference coordination.

The invention relates to an embedded distributing emulation platform basen od HLA faced to space instrumentation and command and a method for carrying out same. The platform supports a distributed interactive simulation and is developped to high application based on HLA/DIS bottom protocol, and carrys out parallel running of multi-emulation platforms, and can record and playback the display and emulation process of two-dimension situation and three-dimension virtual environment for measurement and control environment and measurement and control object during the emulation process. The specific fuction of system includes: carrying out the emulation for measurement and control environment and measurement and control object by the emulation environment platform; adding, replacing or modifying the dynamic model, behavior, sensor and countermeasure of emulation body in the emulation engine by the assemble structure; having expandability; the platform development package having the application interface independently to the protocol; having the functon of route prediction and smoothness in order to display image of situation emulation more fluent and smooth; capable of record in-situ emulation data such that the whole process of virtual emulation training is playbacked, analyzed and evaluated.

A system and method for transparent coordinated beam-forming are provided. A method for transmitting information includes determining correlations between communications devices served by a communications controller and communications devices served by neighboring communications controllers, selecting a communications device from the communications devices served by the communications controller, adjusting a manner of transmission of a transmission containing information to the selected communications device based on a correlation for the selected communications device, and transmitting the transmission to the selected communications device.

The invention relates to a method and a device for tracing a source of an internet protocol (IP) address after network address translation (NAT). The method includes: obtaining a data packet and extracting a connecting IP and a connecting port of the data packet after the NAT; finding mapping record corresponding to the connecting IP and the connecting port in a preset NAT mapping table; and obtaining a source IP address of the data packet according to the mapping record. In addition, the device for tracing the source of the IP address after the NAT is included. By means of the method and the device for tracing the source of the IP address after the NAT, system expenditure can be reduced.

A method for managing Virtual Machine (VM) storage space is provided. In the method, a Storage Balloon Agent (SBA) module deployed in a VM is adopted to directly acquire virtual storage free block information and deliver the acquired virtual storage free block information to a Storage Balloon Daemon (SBD) module deployed in a Virtual Machine Monitor (VMM) layer; and the SBD module releases a part or all of physical storage space corresponding to the virtual storage free block information, and marks virtual storage blocks corresponding to the released physical storage space as unavailable. A corresponding system and a physical host are further provided in the present invention. Through the method of an embodiment of the present invention, use condition of virtual storage space can be acquired in real time, and a large number of read and write operations of a storage system can be avoided.

The invention discloses a data transmission method and device based on the priority level as well as network equipment. The method comprises: when a message to be sent is obtained, determining a threshold interval in which the current queue length of the buffer queue for caching messages to be sent is located; according to the determined threshold interval and the corresponding relationship between the threshold interval built in advance and the allowable priority level of the message allowed to enter the buffer queue, determining the allowable priority level of the message which is allowed to enter the buffer queue for caching messages to be sent; and according to the situation that whether the priority level of the obtained message belongs to the determined allowable priority level, determining whether the obtained message is added into the buffer queue. The data is guaranteed to transmit according to the priority level only,by one buffer queue and the set threshold interval, large system cost caused by polling a plurality of priority levels can be avoided, and system performance is improved.

The invention discloses a communication method between a real-time operating system and a non-real-time operating system on a multi-core processor. The method comprises the following steps that firstly, the length of information of each frame and the capacity of the shared memory are statically configured; secondly, the shared memory is divided into a buffer area for synchronous messages and a queue for asynchronous messages, a progress of processing the messages is established for the real-time operating system and the non-real-time operating system, and internuclear interruption is registered on the multi-core processor; thirdly, the operating systems are communicated, the operating system sending the messages stores the messages into the corresponding part in the shared memory, the internuclear interruption is triggered, the operating system receiving the messages responds to the internuclear interruption, the messages are copied from the shared memory, the feedback is sent to the operating system sending the messages, and communication is finished. According to the communication method, the communication mode adopted in the messages is set in advance, a unified mapping table is not needed, and the progress can be managed conveniently.

The invention discloses a report method for indicating the overloading of relay network, which includes: a base station or a relay station divides network into a plurality of layers according to one or a plurality of predetermined divided thresholds; the overloading report trigger thresholds are arranged at every layer by the base station; the base station or the relay station makes use of respective overloading indicator to make sure whether a plurality of layers are provided with the user terminals of the overloading report trigger thresholds with the strongest interference signals larger than the corresponding layers. And if yes, the base station or the relay station triggers the overloading indicator to report. With the method of the invention used, the network can be further refined to ensure the overloading indicator to report only the layers which exceed the trigger thresholds. Therefore, the system overhead which is brought by the overloading indicator report is reduced and the efficiency of the overloading indicator is improved.

A line card in a network node having a local memory coupled to a local controller and local logic circuit. The local memory in the line card stores state information for signals processed by the line card itself, as well as state information for signals processed by other line cards. The logic circuit and controller implement a same fault detection and signal processing algorithms as all other line cards in the group, to essentially effectuate a distributed and local hardware based control of automatic protection switching (APS) without interrupting a central processor. The line card also performs error checking and supervisory functions to ensure consistency of state among the line cards.

The invention discloses a self-adaptive identification method and system wherein the system comprises: according to a user's historical corpus, establishing a customized dictionary; clustering the customized words in the user's customized dictionary to obtain the type number of each customized word; constructing language models according to the type numbers of the customized words; during the identification of the inputted information of the user, if the words contained in the information exist in the user's customized dictionary, expanding the de-coding paths according to the type numbers of the customized words corresponding to the words; decoding the information according to the expanded decoding paths to obtain a plurality of selective decoding results; according to the language models, calculating the scores of the language models of the selective decoding results; and selecting the selective decoding result whose language model obtains the highest score as the information identification result. With the method and system of the invention, it is possible to increase the identification accuracy for a user's customized words and the consumption of the system can be reduced.

The invention discloses a method for configuring wireless parameters and transmitting signals and a device so as to solve the problem that a system has excessively high cost and expense caused by the fact that wireless parameter selection and signal transmitting methods are not suitable for wireless data transmission in application scenes of indoor areas and hot spot areas. According to the invention, a common LTE mobile communication system crystal oscillator principle is followed in subcarrier spacing selection. The subcarrier spacing is configured to be an integral multiple of LTE mobile communication system subcarrier spacing. Sampling frequency is an integral multiple of the LTE mobile communication system sampling frequency. FFT points are configured to be no less than the integer of a ratio of the sampling frequency to the subcarrier spacing. Therefore, FFT implementation cost is reduced, the system cost of covering the indoor areas and hot spots is greatly reduced, dispatching efficiency can be improved, the system expense is reduced, system throughput is improved and a demand of data traffic is met.

The invention relates to an LTE (long term evolution) broadcast multicast repeat method. The method comprises steps as follows: 1, an eNB (evolved Node B) caches data of broadcast multicast, a timer is started, cached data waits for a time T, each set of UE (user equipment) in RRC_IDLE or RRC_CONNECTED performs normal reception operation of broadcast multicast business and performs correct verification on received data packages, processing is not performed if reception is correct, and if an error occurs to reception, NACK (negative acknowledgement) is required to be replied, and the eNB is informed of the repeat data package with an error; 2, if the timer of the eNB is overtime and a repeat request of the UE is not received, the cache data are deleted, and all sets of UE are considered to have received data correctly; 3, after the eNB receives the error data package repeated by the UE, corresponding processing is performed according to user states. According to the method, only when an error occurs to transmission, the UE sends a repeat request to the eNB, and lower system expense is guaranteed while reliable communication of broadcast multicast is guaranteed.