Ethernet Passive Optical Network(EPON) is one of the most promising fibre-based access techniques which has been
more and more widely used in today's access networks. In this paper, we proposed to integrate WLAN technology with
EPON to provide wireless service in EPON network. First of all, theoretical analysis is given to support the feasibility of
integrating WLAN technology into EPON system. Then, the architecture of the integrated system is descried. The key
point of the plan is that an integrated ONU and WLAN BS called ONU-WLAN AP is setup in the system instead of a
standard ONU. This is also the main difference between proposed system and a normal EPON system. The ONU-WLAN
AP can provide both wired access and wireless access to the end users. System design and implementation is discussed
in the following paragraph. Transmission experiments and results of the proposed plan are also described in this paper.
The experimental results show that the average traffic throughput of the system could reach to approximate 20Mbps.
Finally, conclusions are drawn out: The proposed system can work properly. The integrated system could be a costeffective
plan for broadband access network.
To address the disadvantages of the EPON+EOC technical scheme used in the bidirectional reformation of
HFC network and broadband access application, this paper proposes the concept of Ethernet Passive
Electronic Network(EPEN) based on MPCP protocol. All kinds of modulated EOC technologies are based on
CSMA/CA half-duplex mode MAC protocol, showing low efficiency in access network application. Learning
from EPON point to multi-point (P2MP) control protocol, this paper originally proposes the concept of
full-duplex EPEN based on MPCP protocol for upstream. This paper describes the network architecture of
EPEN, and discusses the technical implementation scheme of the EPEN system. At present the core
technologies and implementation of software and hardware of EPEN are being studied.
KEYWORDS: Video, Network architectures, Network security, Optical networks, Fiber to the x, Information security, Error control coding, Receivers, Control systems, Lithium
The character of 1Gbps bandwidth and tree-based structure make EPON very suitable for broadcast or multicast services such as IPTV. The document proposed a novel scheme, based on the former research for controllable multicast over EPON system, mainly considering system security and maintainability. It can both control the IPTV program source's and the receiver's validity, improving the efficiency and precision. The processing of the two configurations mode is given in detail.
This paper describes the design of a burst-mode ultra-long haul PON trunk fiber protector based on SOA. It's
transparent to protocols and thus compatible with various PON systems. With this technology, the robustness
and transmission distance of PON network can be greatly improved and extended. The fiber protector supports
a maximum transmission distance of 50km and a 1:128 branching ratio. It supports automatic protection
switching of trunk fiber whose longest protection switching time is less than 20ms. In addition, in the design of
the ultra-long haul PON system, by EPON as an example, the ranging of EPON system, RTT compensation
and other parameters also need to be amended. As a result, this article also makes research and description
on synchronization, ranging, time delay compensation, and other key parameters of the EPON system.
Current broadband access system such as ADSL can not satisfy the network applications as the development of network
services. In this paper, we proposed to use WLAN technology on the HFC network as a terminal broadband access plan.
First of all, theoretical analysis is given to support the feasibility of using WLAN technology on the HFC network. Then,
transmission experiments and results of the proposed plan are described in this paper. The key point of the plan is to use
a WLAN access point device as a modem to modulate the baseband Ethernet signal into 2.4GHz WLAN signal which
then be transmitted via coaxial cable(COAX). The experimental results show that the average traffic throughput of the
system could reach to approximate 20Mbps which is the theoretical throughput of 802.11g WLAN transmission. And the
transmission throughput has no remarkable change no matter there is CATV signal in the system or not. Finally,
conclusions are drawn out: The proposed system can work properly. WLAN signal is quite suitable to be transmitted in
the coaxial cable. CATV signal and WLAN signal are not interfering with each other in the system. Using WLAN on the
existing coaxial cable which has already accessed to thousands of people's home could be a cost-effective plan for
broadband access on the HFC network.
A main issue to be resoled urgently in multi-service supported EPON system is to find a reasonable solution for
TDM service access. This paper introduces a suitable TDM access scheme which is the combination of VoIP
and CESoP technology. In our EPON system design, VoIP and CESoP technology are applied respectively to
deal with two main kind of TDM service - Voice and Leased line(such as E1/T1). The scheme has been
implemented in our EPON system and has achieved good results in some triple-play pilot projects.
The character of 1Gbps bandwidth and tree-based structure make EPON very suitable for broadcast or multicast services
such as IPTV. In this paper we focus on security mechanisms that should be available to groups that specifically request
it, and therefore are willing to pay the extra cost of implementing those mechanisms. We concentrate on two issues: how
unauthorized multicast traffic can be prevented by means of multicast transit traffic control; how a group's susceptibility
is likely to be reduced by means of multicast group access control. We have proposed a novel scheme that should be
available to multicast groups that desire precautionary measures be taken to avert the threats of Invalid source and
unauthorized access.
Performance management is a very important part of network management system, it monitors network usage and
troubleshoot network-related problems, captures and stores significant network traffic data to analysis network QoS. A
methodology of performance management for EPON is proposed in this paper, which consists of three parts: statistics
collector, embedded performance database, data analyzer and processor.
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