Advanced Positioning and Location based services in 4G Mobile-IP Radio Access Networks

2004 IEEE 15TH IEEE International Symposium on personal, indoor and mobile radio communications (PIMRC 2004), Barcelona, Spain, 5-8 september 2004.This paper proposes an evolved architecture from 3G networks to provide basic and advanced positioning methods for location based services in mobile IPv6-based radio access networks. We start analyzing current status of location-based services (i.e. LBS or LCS) and architectures in 3G networks as well as state-of-the-art research on LBS and mobile Internet. Next we set the requirements the solution should fulfill. We continue proposing the evolved architecture for support of basic and advanced positioning methods, using MIPv6 and HMIPv6 as mobility scenario for the mobile IPv6 based RAN, describing element's functions and changes from current approaches as well as description of the dynamic behavior. We complete the proposal with a bandwidth analysis of the signaling, identifying issues when planning implementation of LCS services in the network

Signalling in voice over IP Networks

Voice signalling protocols have evolved, keeping with the prevalent move from circuit to packet switched networks. Standardization bodies have provided solutions for carrying voice traffic over packet networks while the main manufacturers are already providing products in workgroup, enterprise, or operator portfolio. This trend will accrue in next years due to the evolution of UMTS mobile networks to an “all-IP” environment. In this paper we present the various architectures that are proposed for signalling in VoIP, mainly: H.323, SIP and MGCP. We also include a brief summary about signalling in classical telephone networks and, at the end, we give some ideas about the proposed “all-IP” architectures in UMTS 3G mobile networks.Publicad

Poder económico e influencia social de un clérigo castellano del siglo XIV: Sancho Pérez, arcediano de Olmedo.

Sin resume

El caballero abulense Fernán Blázquez y el nacimiento de un señorío toledano a principiar del siglo XIV: San Román del Monte

Sin resume

Mayorazgos arcaicos en Castilla.

Sin resume

La creación de nuevas pueblas por Alfonso X: la repoblación tardía del Campo de Arañuelo.

Sin resume

Los señoríos de Navamorcuende, Cardiel y Villatoro, bienes vinculados. la quiebra del orden sucesorio y el mayorazgo de 1449

Detallado análisis de los diversos mayorazgos de Navamorcuende, Cardiel y Villatoro, en la tierra de Ávila, en particular del mayorazgo de 1449, consecuencia de la traslineación en favor de hembra, lo que dará lugar a una serie de pleitos y a la segregación de Villatoro de los bienes vinculados al linaje Dávila.A detailed research of different entailed stated in Navamorcuende, Cardiel and Villatoro, situated in the land of Ávila, specially of 1449 entailed state, that was the result of a line succession breaking in favour of a female, which led to several lawsuits and to Villatoro´s dissociation from the properties linked to the lineage of Dávila

El Regimiento de Toro en el siglo XV.

Sin resume