A Bandwidth Allocation Scheme in Optical TDM

Maach, Abdelilah; Zeineddine, Hassan; Bochmann, Gregor von

doi:10.1007/978-3-540-25969-5_73

Cited by 6 publications

(4 citation statements)

References 18 publications

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“…Thus, several time slot light paths will be set up by the PROBE packet. Then, we can build the burst chain at R1 by time slots (1,2,5,6,8) and this burst chain will be switched as a whole unit to the burst chain (3,4,9,10,11) at R2.…”

Section: B Time Slot Searching Phasementioning

confidence: 99%

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OBCS: High performance burst transmission for achieving energy consumption

Renuka¹,

Kavitha²

2013

2013 IEEE International Conference ON Emerging Trends in Computing, Communication and Nanotechnology (ICECCN)

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Optical networks are a logical choice to meet the future communication demands, with optical fiber links offering huge bandwidth. OBS avoids the use of optical buffering and optical processing logic unlike in OPS but still achieves switching in optical domain. The OBS framework has been widely used in past years, for recent work use Optical Burst Chain switching (OBCS) to achieve high performance. Here switching unit is burst chain it consist of non-periodic bursts in one wavelength. We present extensive simulation result for throughput, delay and energy to demonstrate its superior performance over OBS networks.

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Section: B Time Slot Searching Phasementioning

confidence: 99%

“…They focus on the design of an Optical Time Slot Interchanger (OTSI). In [8], a similar time-slotted OBS network architecture has been proposed. A device called Sequencer, a simplified form of OTSI, is used in [8] to map/delay incoming time slots to outgoing time slots.…”

Section: Introductionmentioning

confidence: 99%

OBCS: High performance burst transmission for achieving energy consumption

Renuka¹,

Kavitha²

2013

2013 IEEE International Conference ON Emerging Trends in Computing, Communication and Nanotechnology (ICECCN)

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“…In addition, for slotted optical burst switching (SOBS) networks where nodes are synchronized and bursts of fixed length are transmitted at the beginning of time slots [3][4][5][6], the utilization of controller has also been proposed for the contention avoidance [7,8] (see Fig. 1).…”

Section: Introductionmentioning

confidence: 99%

Burst transmission algorithm to improve packet level performance in contention-free slotted OBS networks

et al. 2010

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In contention-free slotted optical burst switching (SOBS) networks, controllers are utilized in order to manage the time-slot assignment, avoiding congestions among multiple burst transmissions. In this network, bursts are never lost at intermediate nodes but packets are lost at an ingress edge node due to a burst transmission algorithm. In addition, packet transmission delay increases depending on the algorithm. In order to improve packet level performance, in this paper, we propose a new burst transmission algorithm. In this method, two different thresholds are used; one is used to send a control packet to a controller and the other is used to assemble a burst. With these thresholds, a time slot can be assigned to a burst in advance and packet level performance can be improved. In order to evaluate its packet level performance and investigate the impact of thresholds, we also propose a queueing model of a finite buffer where a batch of packets are served in a slot of a constant length. Numerical results show that our proposed method can decrease packet loss probability and transmission delay with two thresholds. In addition, we show that our analysis results are effective to investigate the performance of the proposed method when the number of wavelengths is large.

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“…Tai-Won et al proposed a slot assignment algorithm for a time-slotted optical burst switched network [10]. Some time-slotted multiplexing architecture were also proposed for WRNs [5,7], which are expected to increase the utilization of the network resource.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of Optical Switched Networks with Two-Way Reservation

Kawanami

Masuyama

Kasahara

2007

Second International Conference on Informatics Research for Development of Knowledge Society Infrastructure (ICKS'07)

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Performance of an optical burst switching with two-way reservation is analyzed using queueing theoretical approach in this paper. The switching considered hereafter exploits both the resource sharing nature of packet switching and the highspeed transmission capability of wavelength division multiplexing in optical networks. Under the swiching architecture, when a group of packets to be addressed to the same edge node of an optical network and thus to be put in an optical burst gets ready for transmission at an edge node, the node sends a request for service to a centralized control node to get wavelength allocated for the duration of a burst transmission. After an offset interval, a designated wavelength is allocated to the request if available. The delay might cause the degradation of QoS, especially for real time applications. One of possible improvements in the above mechanism is for an edge node to send a request for a slot in advance before it counts an enough number of packets to fill up a slot and to expect that the remaining space in a slot is filled with packets arriving in an offset delay.We first describe a queueing model of a finite buffer where a batch of packets are served in a burst and then derive the probability distribution of the number of packets in the buffer. As for performance measures, we obtain the packet loss probability, the average transmission delay and the utilization factor of bursts.

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A Bandwidth Allocation Scheme in Optical TDM

Cited by 6 publications

References 18 publications

OBCS: High performance burst transmission for achieving energy consumption

OBCS: High performance burst transmission for achieving energy consumption

Burst transmission algorithm to improve packet level performance in contention-free slotted OBS networks

Performance Analysis of Optical Switched Networks with Two-Way Reservation

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