This document provides an analysis of the risk and limited flexibility embedded in the extrapolation of mobile communications traditional structures to future system generations. The document further outlines the vision of an open mobile access network and provides high level system overview and a description of the rules and interaction between entities prevailing in the open mobile access network (D2.1b.zip, D2.1a.zip).

This document describes the transition from the whyless.com vision of an open platform for electronic transactions to models, which is the first step in the demonstration of the vision feasibility. Entities of the open platform for electronic work and commerce and the rules by which they interact are discussed in detail. An open mobile access network architecture has been defined for further model development and refinement (D3.1b.zip, D3.1a.zip).

Deliverable D4.1b reports the final definition of the Network Resource Manager model. Model definition was achieved by incorporating the potentials of the radio access technology i.e. UltraWideBand, and the requirements derived from the e-work and e-commerce scenarios and the Network Service Broker. The functions of the multiple access and the radio resource sharing modules, as well as network paradigms for the end to end QoS support, were identified. We characterized the underlying concepts of abstract functional modules and their relations. In particular, we designed the architecture of the Network Resource Manager, we specified the functional entities of the Access Point (AP) and of the Radio Terminal (RT), we tested user flow multiplexing as well as strategies for dynamic resource assignment and mutual interference control, and we incorporated QoS and mobility support in our model (D4.1b.zip, D4.1a.zip).

Ultra Wideband Radio seems to be a promising candidate to be used in the radio part of the Open Mobile Radio Access Network as it provides the required scalability and flexibility. Based on numerous investigations into UWB system characteristics during the first project year a single link physical layer model has been developed, which will be used as a reference system in whyless.com. This report describes the transmitter, a first UWB channel model and two different receiver concepts, the Rake receiver and the digital filter with floating point or hard-limited input signals. The different receivers have been compared in terms of their energy collection as well as their interference rejection capabilities (D5.1b.zip, D5.1a.zip)

This report provides the conceptual framework for the whyless.com approach from an economic point of view.  (D2.2b.zip (3.779 KB)).

This report provides the results of the second year activities of workpackage 3. The network procedures have been refined as regards to the underlying security architecture. Required registration procedures to become part of whyless.com are defined. A UWB trading mechanism is proposed and defined. The core of the brokerage process, the interdomain routing has been refined and simulated. The introduction of Virtual Domains brings new requirements to the IR-algorithm, which can be fulfilled with the concept of a modular NRB. The service contracts as well as the contractual relations have been analysed (D3.2b.zip (818 KB)).

The second year activities in WP4 are dedicated to define algorithms and procedures for the Network Resource Manager both in the wired and wireless domains. The present deliverable reports the final design of the Resource Manager algorithms and procedures. The activities are divided into four tasks focused on the identification of the main issues related to the Resource Manager in an open mobile environment. The general architecture of the administrative domains has been identified and the interfaces between the various network entities have been studied. The network paradigms for the end to end QoS support and the radio resource control models defined in the first year of the project are linked together in a common network view. This step implies on the one hand the examination of principles identified to support QoS flows and the identification of the interactions with the Network Resource Broker and the Application Service Provider, and on the other hand the mapping of such principles in a wireless domain exploiting the UWB technology to support wireless links interconnecting mobile users to the network. The building blocks for the definition of a simulation model of the Network Resource Manager are also identified (D4.2b.zip (3.396 KB)).

The second year activities in WP5 focus on the refinement of the air interface structure and the description of the transceiver format and algorithms. The reports explains the reasons why IR-UWB has been selected for the physical layer of the OMAN. It then shortly summarises the PHY design considerations and describes the selected air interface structure. Furthermore, a set of reference scenarios including different environments and multi-user densities are defined which will be the basis for the air interface verification. The document describes the refined transmitter structure, where the number of interface parameters have been reduced without affecting the PHY flexibility and scalability. On the receiver side one of the most challenging tasks is the detection of the IR signal, if the time-basis of the desired transmitter is unknown. Three different approaches are proposed, which will be subject to further investigations. As soon as the pulse arrival window is determined, the receiver can start to adapt its filter coefficients to the initially unknown received pulse response. The performance of two adaptive filters is investigated in a time-variant channel with multi-user interference and compared to an alternative autocorrelation receiver. In parallel different approaches for narrowband interference suppression are summarised including pulse shaping, TH-code design and MMSE algorithms. Finally the report gives a first indication on the possible coding gains and expected increase of the total number of systems users when applying error control coding and/or ARQ (D5.2b.pdf (833 KB))

(D1.3.zip)

 (D2.3b.zip)

The deliverable summarizes the results of the 3rd year of the WP3 of the whyless.com project. The feasibility of the whyless.com approach has been analysed, in particular the resource brokerage mechanism has been simulated and its operativeness has been proved(D3.3b.zip).

This deliverable summarizes the main WP4 results achieved in the third year of the whyless.com project. Four main work areas have been identified and the relevant results are reported in this document. A structure of the activities in these four areas is indicated and interactions with other WPs are pointed out (D4.3b.zip).

The WP5 activities in the third project year are dedicated to two main targets, which are a) IR-UWB performance assessment and b) coexistence with narrowband systems. This report focuses on the performance assessment presenting the results of activities 'Air Interface' and 'Error Control'. The first work area investigates the achievable BER as a function of the SNR and the link configuration. The presented simulations assume a multi-user scenario, where all links are received with the same average power. The second work area replaces the equal power assumption by a random user distribution, where the transmit power levels are set by the power algorithm defined by WP4. In this case the interferer amplitude probability function significantly deviates from the Gaussian distribution and a modified Gamma distribution gives a better fit. The third work area explores the effect of quantization on the performance of the matched filter and compares the results to the BER of the improved TR receiver. Finally, work area 4 investigates the coding gain of Turbo codes for different number of iterations and block sizes (D5.3b.zip).

The regulation processes on regional and global level are described and the question if there is an UWB radio self interference limit, and where is it, is answered. Further a generic UWB interference model is developed and several case studies are performed applying this model. Also a detailed analysis is performed concerning the peaceful coexistence between UWB and three different cellular systems taking into account FCC as well as proposed ETSI spectral power density masks. It is shown that both masks are not optimal in terms of power spectral density allowed in the band of operation of the cellular systems. Furthermore means of spectral shaping are investigated and spectral shaping using certain TH code patterns is recommended finally. Then a method of detection of narrowband systems is investigated and exact closed form expressions for the detection and false alarm probability have been derived and validated by means of simulation. Finally major regulation objectives from a whyless.com point of view enabling open mobile access network structures are summarized and hints for UWB regulation are provided.(D5.4b.zip)