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115 results about "Index mapping" patented technology

Index mapping (or direct addressing, or a trivial hash function) in computer science describes using an array, in which each position corresponds to a key in the universe of possible values. The technique is most effective when the universe of keys is reasonably small, such that allocating an array with one position for every possible key is affordable. Its effectiveness comes from the fact that an arbitrary position in an array can be examined in constant time.

Arrangement And Method Relating To Load Distribution

The present invention relates to an arrangement adapted to be provided in a server node (50) in a communication system, handling a large number of clients, comprising a number of interface boards (201, 202, 203) handling one or more protocols for communication with different nodes and a number of processing means (101, . . . ,106) adapted to serve a plurality of clients which may use a number of different types of identities when addressing the server node (500). It comprises load distribution control means adapted to handle clients using at least two different categories of addressing identities separately, and to distribute the clients to processing means (101, . . . ,106), and being adapted to provide a number of load index values (LI1LI36), exceeding the number of processing means, and load index mapping means mapping between load index values and processing means in a load index mapping table (30, 301, 302, 303, 3011-3016). It is further adapted to distribute mapping tables or to substantially each interface board (201,202,203) and each processing means (101, . . . ,106), and first mapping means comprising mapping algorithm (211,212,213) handling clients or subscribers using a first category of identity comprising a for the server node normal identity e.g. generated externally, said mapping algorithm being adapted to establish a load index value (LI1) for an incoming message using said firs.t category of identity, and second mapping means (221,222,223) comprising a second mapping algorithm for mapping second category or internally generated identities to respective load index values such that a client will be handled by the processing means (101, . . . ,106) mapped to the corresponding, established load index value.
Owner:TELEFON AB LM ERICSSON (PUBL)

System and method for mapping an index into an IPv6 address

A system and method maps Virtual Local Area Network (VLAN) designations to Internet Protocol version 6 (IPv6) site identifiers (IDs), and embeds site IDs into scoped internet addresses in such a way as to facilitate processing by primarily hardware-oriented forwarding tables. A router has a plurality of interfaces for receiving and forwarding packets, and a route processor for making forwarding decisions for received packets. The route processor includes a routing engine, a routing table, a forwarding information base (FIB), a VLAN store and a site ID store. At least some of the router's interfaces are associated with corresponding VLAN IDs, and the site ID store is preconfigured with a mapping of VLAN IDs to site IDs. For IPv6 packets with link-local unicast destination addresses, embedding the VLAN ID associated with the inbound interface into the address, while for packets with site-local unicast destination addresses, using the retrieved VLAN ID as an index to obtain the corresponding site ID, which is then embedded into the address. The modified destination address is then applied to the FIB, which is a forwarding table optimized to permit fast lookups, to derive the outbound interface from which the packet is to be forwarded to reach the destination entity.
Owner:CISCO TECH INC

Space-code two-dimensional index modulation wireless communication system and method

InactiveCN106788636AReduced mapping constellation diagram dimensionsReduce consumptionRadio transmissionIndex mappingCommunications system
The invention discloses a space-code two-dimensional index modulation wireless communication system and method, and belongs to the technical field of wireless communication. According to a space-code two-dimensional index modulation scheme, two kinds of index resources are adopted for participating in indexing; a space index is combined with a code index; a transmission end is used for splitting an in-phase component and an orthogonal component of a baseband modulation symbol through a multi-antenna communication system mapped by the two-dimensional index; an orthogonal mapping way is adopted; independent index mapping is performed; a PN code required by current component frequency spread and an activated antenna are selected separately. When a receiving end detects information through a detection algorithm in an estimation way, information detection is performed according to an in-phase branch and an orthogonal branch of a signal. By adopting the space-code two-dimensional index modulation wireless communication system and method, a space modulation antenna indexing way is combined with a code index modulation indexing way, and an orthogonal mapping way is adopted, so that an antenna index and a code index are reutilized repeatedly, and information bits transmitted by index mapping are improved. The system frequency spectrum efficiency is increased, and the consumption of index resources is lowered.
Owner:CHONGQING LINFEI ELECTRONICS TECH CO LTD

A power grid timing sequence large data parallel loading method

ActiveCN104407879AAvoid bottlenecks affecting loading performanceImprove loading timeProgram loading/initiatingIndex mappingPresent method
The present invention discloses a power grid timing sequence large data parallel loading method, to solve the problem, i.e., waiting phenomena occurs due to failing in parallel loading when multiple clients parallel loads an abundant amount of historical timing sequence data. By partitioning an index mapping table, the present invention performs partitioning preprocessing on a historical timing sequence data storage table according to the size of the amount of data to be loaded, and performs the processing of maintaining data locality of the abundant amount of historical timing sequence data to be loaded according to the range of the partition of the historical timing sequence data storage table distributed on each data node. After the abovementioned processes, disk IO conflicts and the network communication overheads between different nodes of the cluster encountered by the multiple clients when reading the index mapping data file can be effectively reduced when parallel loading the abundant amount of historical timing sequence data, therefore, performance issues caused by overload when loading the abundant amount of historical timing sequence data by a single node. The present method can fully use the distributed parallel processing ability to greatly reduce the time for loading the abundant amount of historical timing sequence data.
Owner:CHINA REALTIME DATABASE

Precoding matrix index reporting and precoding processing method, system and apparatus thereof

The embodiment of the invention discloses a precoding matrix index reporting and precoding processing method, a system and an apparatus thereof and relates to the wireless communication technology field. The method, the system and the apparatus are used to save resource costs occupied by a terminal which reports the precoding matrix. The method is characterized in that: the terminal determines an antenna port number and a precoding matrix index table corresponding to a rank indication (RI) value; the terminal acquires a mapping relation between a compressed code word index and an original code word index and selects precoding matrixes corresponding to the original code word index which is mapped by the compressed code word index to be the current available precoding matrixes; one precoding matrix is selected from the current available precoding matrixes and the compressed code word index corresponding to the precoding matrix is determined; the compressed code word index is reported to a base station, wherein a bit number used by the reporting is not greater than the bit number which can express the precoding matrixes corresponding to all the compressed code word indexes which are comprised by the mapping relation. By using the method, the system and the apparatus of the invention, the resource costs occupied by the terminal which reports the precoding matrixes can be saved.
Owner:DATANG MOBILE COMM EQUIP CO LTD

Method and system for compressing a continuous data flow in real-time using cluster successive approximation multi-stage vector quantization (SAMVQ)

The present invention relates to a method and system for compressing a continuous data flow in real-time based on lossy compression. In real-time data compression, a series of multi-dimensional data subsets acquired in a given period of time are treated as a regional data cube for the purpose of dividing a continuous series of data subsets into a plurality of data cubes. In a first embodiment implementation of parallel processing using a plurality of compression engines is facilitated by separating a data cube into a plurality of clusters comprising similar spectral vectors. By separating the data cube into clusters of similar spectral vectors no artificial spatial boundaries are introduced substantially improving image quality. Furthermore, the spectral vectors within a cluster are more easily compressed due to their similarity. In a second embodiment a predetermined number of 2D focal plane frames in a boundary area of a previous regional data cube close to a current regional data cube are included in a training set used for codevector training for the current region. Therefore, no artificial boundary occurs between the two adjacent regions when codevectors trained in this way are used for codebook generation and encoding of the spectral vectors of the current regional data cube substantially reducing image artifacts between adjacent regions. A remedy for the single bit error problem is provided in a third embodiment. Full redundancy of compressed data for a regional data cube is obtained by combining the previous regional data cube and the current regional data cube for codebook training. In order to obtain redundancy for the index map, the codebook is used to encode the current regional data cube as well as the previous regional data cube producing a baseline index map for the current regional data cube and a redundant index map for the previous regional data cube. Therefore, full redundancy for a regional data cube is provided allowing restoration of a regional data cube if its codebook and / or index map are corrupted or lost due to single bit errors.
Owner:CANADIAN SPACE AGENCY

Method for realizing language recognition based on deep learning

The invention discloses a method for realizing language recognition based on deep learning, which comprises the following steps: after obtaining a call recording file, generating a language text dataset through AliCloud ASR and a language recognition interface; performing language text noise reduction processing on the feedback recognition result; language texts under the categories are extractedfor recognition, language judgment is conducted on the categories, and the training corpus manufacturing procedure is completed; words of the training corpus are mapped into index representation; constructing a vocabulary-index mapping table, constructing a label-index mapping table for language labels, reading word vectors from a pre-trained word vector model, inputting the word vectors as initialization values into the model, performing numeralization on language texts and language labels through the mapping table to obtain index expressions, filling the index expressions with fixed lengths, and submitting the index expressions to a deep learning classifier for training; and the deep learning classifier analyzes and predicts the language text to be tested, and finds out the language category with the highest probability. The method can reduce the manual rehearing pressure, saves the manpower, is high in efficiency, is automatic, and is high in accuracy.
Owner:广州云趣信息科技有限公司
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