A mobile virtual reality service (VRS) will make the presence and presentation of the sounds and sights of an actual physical environment virtually available everywhere in real time through the use of mobile telecommunication devices and networks. Furthermore, the VRS is the conversion of a physical system into its digital representation in a three-dimension (3D) multimedia format. This paper addresses one aspect of the notion of bringing an actual multimedia environment to its virtual presence everywhere in real time .
An international telecommunication union (ITC) recommendation document, containing ITU's visions on mostly forward-looking and innovative services and network capabilities, addresses the capability needed in a telecommunication system to allow mobile access to real-time sights and sounds of an actual physical environment in the contest and forms of a VRS episode .
Presently, the availability of a VRS is limited to fixed-access phenomena in non-real time , for example , entertainment machines and various simulations equipment. There are also some limited fixed-access and real-time services that require low data transmission rates, such as net meetings. In the latter case, a user can experience a limited real-life environment as opposed to the former case of a non-real-life computer-generated environment. These existing virtual reality services do not allow user control in viewing 3D environments, and they are generally limited to viewing images on a monitor in two dimensions.
The VRS-capable systems, however, will allow rather 3D representations of remote real-life environments. For instance, a passenger in a train or in a car could become a participant in a conference call in a 3D environment or become virtually present among the audience in a concert hall or sports stadium viewing a live concert or event
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VRS - Definition
presence and presentation of the sounds and sights of an actual physical environment virtually available everywhere in realtime.
3D representations of remote real-life environments.
physical system into its digital representation in 3D multimedia format.
a passenger in a train becomes a participant in conference hall in a 3D environment.
become virtually present among the audience in a concert.
A VIRTUAL MEEETING SECTION
development of vrs requires:
High speed data transmission rate capability for data streaming.
assumption - hightech industry deliver SHDR transmission equipment.
Rate 100 mb/s equipment must be able to
transfer-transport-receive sights and sound
b) Highly complex and sophisticated user equipment for user access.
c) An advanced signaling and controlling data network.
Initiating, establishing,maintaining and terminating
The proposed solution describes
mobile VRS environment
its core network for signaling and controlling of a VRS episode
the VRS architecture and various entities to perform the task of VRS provisioning
Actual physical environment (APE)
VRS user equipment (VUE)
VRS access system (VAS)
VRS core system (VCS).
real-time establishment of sights and sounds streaming communication between one or more VRS users and sites.
Call – communication establishment -users in voice network.
Session- servers and clients-IP multimedia network.
ACTUAL PHYSICAL ENVIRONMENT(APE)
the real world environment of the subject to be presented –VRS users.
actual subject environment that is transmitted to and audio visually formed in a virtual environment.
VRS USER EQUIPMENT(VUE)
End-point device used to transmit and receive data for establishing a VRS episode.
Eg. handset, headset, helmet, gloves, video camera, recording device etc
primarily a software-driven device controlled by one or more users, network or both.
VRS ACCESS SYSTEM(VAS)
the intermediate VRS-capable system linking the VUE to the VRS core system.
fix terrestrial or satellite radio access system that provides the mobile VUE with an access to the VRS.
VRS CORE SYSTEM
backbone network that, in conjunction with the VUE and VAS
manages the establishment of VRS episodes
VCS system involved in a VRS episode is based on the number of VUEs and APEs being used.
A VCS that is in charge of establishing and managing a VRS episode is called a serving VCS (S-VCS).
2 types- Visited VCS (V-VCS)
Home VCS (H-VCS)
V-VCS : the core network system to which the VUE is attached.
H-VCS : if the user has the subscription affiliation with the VCS.
3 functional entities of VCS
VRS EPISODE CONTROL ENTITY
VRS EPISODES MANAGEMENT ENTITY
VRS EPISODE CONTROL ENTITY(VECE)
functional entity in change of supporting and controlling a VRS episode.
2 types- Proxy VECE (PVCE)
Serving VECE (SVECE)
PVECE : attend and monitor all requests coming from or going to the VUE.
the P-VECE does not necessarily remain the same during VRS episode .
It depends on the mobility range of VUE.
in charge of controlling the VRS episodes and keeping track of the VUE status
remains the same throughout a VRS episode
VRS EPISODE MANAGEMENT ENTITY
functional entity that manages a number of S-VECEs.
it coordinates, synchronizes, and maintains all the communications between all S-VECEs .
boundary functional entity with each VCS
connecting point of all VECEs from one side and the GWE of another VCS from the other side.
It is the point of entry and exit for all VRS episode control signaling message .
facilities the flow and routing of the VRS signaling traffic.
A schematic view of VRS functional Architecture
VRS IMPLEMENTATION SCENARIO
a configuration scenario for a single VUE and multiple APEs in a VRS episode setup
the management of its signaling flows.
It presents a schematic implementation of the VRS functional architecture with 2 VCS subsystems for 1 VUE and several VCS subsystems, each serving 1 or more APEs.
example for establishing a VRS episode
arrow corresponds to a signaling message exchange
requesting an action or responding to a request
The VUE is visiting a network where the P-VECE is its first point of entry into the core network system
A schematic implementation of a VRS episode setup.
VRS EPISODE SETUP SIGNALING INFORMATION FLOWS
presents the signaling information flows for the procedure to setup a VRS episode
double-headed arrow corresponds to two message flows - request message and response message
The response message could be a response to a request message, acknowledging the request or sending an error message.
signaling message flow
After the VUE’s attachment to, and registration with, the visited VCS a stimulus flow initiates the procedure for setting up a VRS episode.
VUE sends a VRS episode request to its service attendant, the P-VECE in the visited VCS network.
Upon recognizing the request for establishing a VRS episode P-VECE, forwards the VRS episode setup request via GWEs to the S-VECE.
The S-VECE sends n information query to the VUE’s service subscription database (SSdb) for the VRS service information, eg service authorization.
Recognizing the request for establishing a VRS episode, the S-VECE sends a request for a VRS episode setup to the VEME.
Using information on the VUE’s VRS subscription, the VEME identifies all end-points involved in the VRS, and dispatches notification requests for the VRS episode setup to various S-VECEs of the APE endpoints including those in the VUE’s home network .
Once all would be participants in the VRS episode have been identified and affirmative responses have been received by the VEME, the VEME responds positively to the VUE’s S-VECE.
The S-VECE forwards the episode response message to the VUE’s in the V-VCS.
The P-VECE forwards the response message to the VUE.
At this point, all necessary protocol acknowledgment and notification have been received.
The next move is to have all needed bearers for media transport established and to have the VRS episode setup for the specific VRS delivery.
A VRS episode setup information flow diagram
virtual conference session.
virtual movie theaters.
virtual hospital operation room (OR)
virtual concert hall.
A virtual command center for operating a motor vehicle where the virtual environment is created for the driver’s seat.
A guy learning to fly a hang glide virtually
concept of the VRS and the telecommunication environment for its realization.
It identified major challenges for its realization
Assuming the availability of an SHDR transmission an eg of the VRS system architecture was presented
And a systematic approach was proposed for a VRS implementation scenario.
Disadvantage- limited to sight and sound.
No other aspects of actual environment are cosidered.
hey plz give a ppt for this
mobile virtual reality service (VRS)