Abstract:
A system and method for supporting mobile Internet communication is provided which employs a plurality of Routers and a plurality of Mobile Nodes (MNs). Each Router has a unique communication address. Each MN is associated with a home Retour. Each Router has an associated Mobile Node Location List identifying each MN for which the Router is the home Router and the communication address of a Router corresponding to a current location of each such MN. Each MN is movable from an old location where the MN communicates with the Internet via one Router to a current location where the MN communicates with the Internet via a different Router. Communication at the current location via the different Router is established by communicating to the MN's home Router the communication address of the different Router as the communication address corresponding to the MN's current location. Accordingly, a data communication from a corersponding node (CN) to a selected MN is communicated to the selected MN by accessing the Mobile Node Location List of the selected MN's home Router to determine the communication address corresponding to the selected MN's current location and directing the data communication to that determined communication address.
Abstract:
A system (Fig. 1) and method for storing features/QoS parameters in a main/central database (MCD, 24 Fig. 1) and also in a local context directory (10). A memory transfer agent (12) is used to transfer only active feature contexts from a first router (6) to a new router (8) during handover.
Abstract:
A method for reserving resources for a wireless packet-based session, the method comprising a first user sending a first resource reservation protocol message to a second user via a network comprising a plurality of routers for reserving resources for a packet-based session along a path to the second user; and the first user receiving a second resource reservation protocol message from the second user in response to the first resource reservation protocol message, wherein resources for communication in both directions to and from the second user are reserved by routers along the path as the second resource reservation protocol message traverses the network along the path.
Abstract:
An apparatus and method for DFT processing using prime factor algorithm (PFA) on a selected number P of midamble chip values received by a CDMA receiver, where P has a plurality M of relatively prime factors F, and the DFT process is divided into M successive F-point DFT processes. The P data values are retrieved from a single input port memory and selectively permuted by a controller into parallel caches to optimize factoring with associated twiddle factors stored in parallel registers. The permuted inputs are factored in two or more parallel PFA circuits that comprise adders and multipliers arranged to accommodate any size F-point DFT. The outputs of the PFA circuits are processed by consolidation circuitry in preparation for output permutation of the values which are sent to memory for subsequent DFT cycles.
Abstract:
Se describen un metodo y un aparato para desintercalar o descodificar bloques de datos intercalados expandidos, particularmente para el uso en sistemas de telecomunicaciones inalambricas tales como los que son proporcionados por el estandar de Proyecto de Sociedad de Tercera Generacion (3G). Los datos son procesados en una base de elemento secuencial, donde cada elemento tiene un numero predeterminado de bitios M, cuyos bitios estan contenidos en un bloque de palabra W' de datos secuenciales. Los elementos son extraidos del bloque de palabras W' en orden secuencial, siendo extraido cada elemento ya sea de una palabra simple o de dos palabras intercaladas secuenciales dentro del grupo de palabras W'. Los elementos son almacenados en localizacion selectiva dentro de un grupo de palabras W de una memoria desintercaladora, tal que despues de la terminacion de la extraccion y la escritura de todos los elementos, las palabras W provenientes de l a memoria desintercaladora pueden ser secuencialmente leidas para corresponder a un bloque de bitios de datos originales a partir de los cuales fue creado el bloque de elementos intercalados. El procesamiento convencional adicional da como resultado la contraccion de las palabras expandidas, desintercaladas, para reproducir el bloque de datos de bitios en un receptor como fue originalmente disenado para la transmision en un transmisor.
Abstract:
An apparatus and method for DFT processing using prime factor algorithm (PFA) on a selected number P of midamble chip values received by a CDMA receiver, where P has a plurality M of relatively prime factors F, and the DFT process is divided into M successive F-point DFT processes. The P data values are retrieved from a single input port memory and selectively permuted by a controller into parallel caches to optimize factoring with associated twiddle factors stored in parallel registers. The permuted inputs are factored in two or more parallel PFA circuits that comprise adders and multipliers arranged to accommodate any size F-point DFT. The outputs of the PFA circuits are processed by consolidation circuitry in preparation for output permutation of the values which are sent to memory for subsequent DFT cycles.
Abstract:
A system and method for feature context transfer store all currently “active” feature contexts locally at an Access Router (AR), and store all “inactive” feature contexts centrally in a main database. The main database can be accessed by all the ARs within the same administrative domain. When a new microflow becomes active, its active feature contexts are brought from the main database and loaded into the local directory, thus replacing any inactive feature contexts that are not needed at the time.
Abstract:
A method and apparatus are disclosed for deinterleaving expanded interleaved data blocks, particularly for use in a wireless telecommunications systems such as provided by the Third Generation Partnership Project (3G) standard. The data is processed on a sequential element basis where each element has a pre-determined number of bits M which bits are contained in a block of sequential data world W'. The elements are extracted from the block of words W' in sequential order, each element being extracted form either a single or two sequential interleaved words within the set of words W'. The elements ar e stored in selective location within a set of words W of a deinterleaver memo ry such that upon completion of the extraction and writing of all the elements, the words W from the deinterleaver memory can be sequentially read out to correspond to an original data block of bits from which the block of interleaved elements was created. Additional conventional processing results in the contraction of the deinterleaved expanded words to reproduce the data block of bits in a receiver as originally designated for transmission in a transmitter.