To achieve the objectives
the project was organized into seven workpackages (WPs) with the dependencies shown
in Fig. 1.
Fig. 1 - Work package interdependence
WP 2: Scenario Definition and
Business / Deployment Models
This WP is divided in two
main tasks and phases. The initial task of this WP is to define the framework for
the project.
The second task of the
work package will be ongoing during the remaining of the project and aims to look
at the impact on planning of the cooperative dimension, by collecting the results
of the other work packages (namely WP5 ), and analyzing or proposing business models
that may encourage the users to cooperate.
The main outcome of this task, will be
a set of recommendations considering on one hand the impact of the cooperative dimension
on the planning of cellular networks, and on the other hand identification of the
aspects to be further developed considering the relation of cooperation with user
behaviours and the issues it puts (security namely).
First year achievements:
- Revision of the most significant worldwide initiatives and options regarding
cooperative diversity techniques
- Description of the scenarios where the cooperative diversity techniques
investigated by CODIV are expected to bring a greater increase of the
performance in the future radio networks
- Definition of top-level economical and technical requirements for CODIV
scenarios
- Definition of common format to be used in the process of development and
evaluation of CODIV techniques
- Preliminary analysis of the foreseen impact over current radio network planning
tools and business models produced by CODIV techniques
- Creation of initial preliminary framework to be considered by all the partners
during the first part of the project.
WP 3 - PHY layer algorithms and protocols
The scope of this WP encompasses
the functions that are directly related to the link layer, namely:
- Define and evaluate the algorithms and
protocols used to transmit eventually using cooperation the information from the
source to the destination. The radio resource assignment is considered to be part
of WP4.
- Acquire the physical layer parameters
needed for both the localized and distributed Tx/Rx algorithms. The signaling and
protocols required for broadcasting such information is part of WP4.
- Provide the technical inputs and algorithms
to the implementation work package (WP6).
- Provide the technical inputs to WP5 to
enable the system level evaluation.
- Finally another goal of this WP is to
go beyond the algorithms delivered to WP6, in order to optimize these algorithms
and propose more advanced schemes. This task will use initial feedback either in
terms of complexity and / or performance from WP5 and WP6.
First year achievements:
- Some practical schemes or algorithms have been proposed and evaluated in the context
of cooperative communications
- ‘Cooperative’ must be understood in a wide sense: How to organise and optimise the
employment of idle transmission/processing resources and to share the time-frequency
resources, so that better throughput and/or coverage are provided?
- The subject is wide, and exhaustiveness cannot be claimed. However, the addressed
areas cover a large spectrum of the subject
- The studies addressed in WP3 cover some practical issues related to the implementation
of the prototypes
- For example, how to optimise channel estimation in the context of relaying (compound
channel) or MU-MIMO (x channels in parallel)
WP 4: MAC / Network and RRM algorithms
and protocols
The scope of this WP deals
with the identification of resources available for the communication, assignment
of resources to the various entities involved in the establishment of a multi-link
and the protocols /signalling needed to exchange all the control information. This work package is logically
structured in three items as its twin counterpart WP3.
First year achievements:
- The work done has clarified the basics of radio resource management for cooperative
diversity systems
- The algorithms proposed already show some important performance gains.
- The main results and developed theoretical framework span:
- Packet scheduling algorithms
- Relay assignment algorithms
- Network state information (classification and updating policies)
- System level simulations to test the coverage improvement brought by cooperative
diversity
WP 5 - System level evaluation
The objectives of this
WP are twofold: • To develop a system level simulator that
will allow the characterization of the behaviour and measuring the performance (throughput,
latency, overall network capacity, etc.) of a cellular network with terminals and
bases stations able to exploit cooperative diversity. • Make usage of this simulator to characterize
the benefits in terms of communication quality, coverage and other QoS parameters
that can be brought through the use of cooperative diversity.
First year achievements:
- Based on WP2 specifications
- Scenarios for system level evaluation defined
- Traffic models defined
- System level evaluation platform upgraded
- Fixed relays included
- Preliminary results obtained
WP 6 - Prototyping and demonstration
The objective of this WP
is to demonstrate the technology feasibility of infrastructure networks to exploit
cooperative diversity and performance evaluation in terms of communication QoS parameters.
First year achievements:
- System definition and criteria to select the schemes (D3.1 – joint achievement with
WP3 and WP4).
- High level design for both WiMAX and LTE demonstration.
- Architectural changes in the WiMAX demonstration as part of the required adaptation
to cooperative diversity needs.
- Adaptation of TID’s prototype from WiFi to LTE system (baseband processing and RF
module according to 3GPP specifications for LTE FDD standard)
- Design and implementation of simulation environment (Microsoft Visual C++) to reproduce
the functionality of TID’s demonstrator for LTE standard
- Description of in-lab testing methodology and procedures to assure the correct operation
of the demonstration platform (both WiMAX and LTE platforms)
- Outline the sub-set of parameters to be used for the evaluation of PHY algorithms
(both WiMAX and LTE platforms)
- Preliminary analysis of expected inputs from WP3 for implementation of PHY algorithms
(both WiMAX and LTE platforms)
WP 7 - Dissemination
This
activity will prepare the plans and organize the required actions for dissemination
of knowledge gained during the project, for exploitation of the results and for
demonstration of the system concept developed within the project.
First year achievements:
- The initial dissemination objectives of the project are in good shape and certain
effort during the first year has been done to publicize the CODIV’s intentions around
the technical community
- The first year publication can be seen in CODIV Publications section website
|