Pub Date : 2003-07-09DOI: 10.1109/ICCT.2003.1209866
Fan Rui, Chen Shi-duan
Congestion control for large multicast groups has been a challenging issue for widespread deployment of multicast services. Single-rate multicast congestion control schemes address both TCP-friendly and scalability issues with low complexity. However, they do not solve the well-known "drop-to-zero" problem, i.e., to prevent a slow receiver from slowing down faster receivers in the same multicast group. For this purpose, we propose a new single-rate multicast congestion control mechanism for heterogeneous receiver which helps each multicast receiver to receive at its desired rate. The basic idea is as follows. Each multicast receiver maintains and adjusts a window at itself just like what TCP source does. They calculate a desirable receive rate with this window and the RTT to the source and feed back this rate to the source and intermediate routers. The sender tunes its rate according to the fastest receiver in the group. Each multicast router does not copy each incoming multicast packet to all egress links in the multicast tree unconditionally but copies packets to egress links according to the rate information obtained from the downstream receivers. "Good" egress links receive more packets while "bad" egress links receive less packets. The proposed strategy is shown to be still TCP-friendly and scalable while eliminating the "drop-to-zero" problem.
{"title":"A multicast congestion control scheme for heterogeneous receivers","authors":"Fan Rui, Chen Shi-duan","doi":"10.1109/ICCT.2003.1209866","DOIUrl":"https://doi.org/10.1109/ICCT.2003.1209866","url":null,"abstract":"Congestion control for large multicast groups has been a challenging issue for widespread deployment of multicast services. Single-rate multicast congestion control schemes address both TCP-friendly and scalability issues with low complexity. However, they do not solve the well-known \"drop-to-zero\" problem, i.e., to prevent a slow receiver from slowing down faster receivers in the same multicast group. For this purpose, we propose a new single-rate multicast congestion control mechanism for heterogeneous receiver which helps each multicast receiver to receive at its desired rate. The basic idea is as follows. Each multicast receiver maintains and adjusts a window at itself just like what TCP source does. They calculate a desirable receive rate with this window and the RTT to the source and feed back this rate to the source and intermediate routers. The sender tunes its rate according to the fastest receiver in the group. Each multicast router does not copy each incoming multicast packet to all egress links in the multicast tree unconditionally but copies packets to egress links according to the rate information obtained from the downstream receivers. \"Good\" egress links receive more packets while \"bad\" egress links receive less packets. The proposed strategy is shown to be still TCP-friendly and scalable while eliminating the \"drop-to-zero\" problem.","PeriodicalId":237858,"journal":{"name":"International Conference on Communication Technology Proceedings, 2003. ICCT 2003.","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123024469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2003-04-09DOI: 10.1109/ICCT.2003.1209163
Ja-Won Seo, Sub Han, Sang-Gug Lee, M. Lee, T. Yoo
This paper introduces a novel peak detection in the burst-mode receiver considering the extinction ratio (6dB) of the received burst packet cells. The peak detector is designed using a 0.18 /spl mu/m CMOS technology and can be applied to the optical burst-mode receiver in an Ethernet PON system. By adopting this method, we can get the -29 dBm sensitivity and -8 dBm overload at 1.25 Gb/s.
{"title":"A 1.25 Gb/s high sensitive peak detector in optical burst-mode receiver using a 0.18 /spl mu/m CMOS technology","authors":"Ja-Won Seo, Sub Han, Sang-Gug Lee, M. Lee, T. Yoo","doi":"10.1109/ICCT.2003.1209163","DOIUrl":"https://doi.org/10.1109/ICCT.2003.1209163","url":null,"abstract":"This paper introduces a novel peak detection in the burst-mode receiver considering the extinction ratio (6dB) of the received burst packet cells. The peak detector is designed using a 0.18 /spl mu/m CMOS technology and can be applied to the optical burst-mode receiver in an Ethernet PON system. By adopting this method, we can get the -29 dBm sensitivity and -8 dBm overload at 1.25 Gb/s.","PeriodicalId":237858,"journal":{"name":"International Conference on Communication Technology Proceedings, 2003. ICCT 2003.","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115162454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2003-04-09DOI: 10.1109/ICCT.2003.1209047
Jianming Zhang, Dacheng Yang
For a network planning, it's important to investigate a method, which can evaluate the system performances given certain system parameters including the direction of the antenna, its down-till angle, power and others. Because practical networks are very complex, it's not sufficient to simply use some theoretical formulas. This paper presents a novel modeling method for CDMA network planning applications. The proposed modeling method consists of some iterative linear equations, which greatly decrease the complexity of network planning. The paper also proved that the method is completely convergent and the numerical results show the convergence rate is fast. What's more, this method is easy to be implemented on computer platforms and thus can be used as the core algorithm of planning software, perspectively.
{"title":"A novel modeling method for CDMA network planning","authors":"Jianming Zhang, Dacheng Yang","doi":"10.1109/ICCT.2003.1209047","DOIUrl":"https://doi.org/10.1109/ICCT.2003.1209047","url":null,"abstract":"For a network planning, it's important to investigate a method, which can evaluate the system performances given certain system parameters including the direction of the antenna, its down-till angle, power and others. Because practical networks are very complex, it's not sufficient to simply use some theoretical formulas. This paper presents a novel modeling method for CDMA network planning applications. The proposed modeling method consists of some iterative linear equations, which greatly decrease the complexity of network planning. The paper also proved that the method is completely convergent and the numerical results show the convergence rate is fast. What's more, this method is easy to be implemented on computer platforms and thus can be used as the core algorithm of planning software, perspectively.","PeriodicalId":237858,"journal":{"name":"International Conference on Communication Technology Proceedings, 2003. ICCT 2003.","volume":"137 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123140981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2003-04-09DOI: 10.1109/ICCT.2003.1209902
Mingqi Li, Q. Peng, Yulin Liu
1-dimensional spread spectrum (1DSS) technology is widely used nowadays, such as in the DS-CDMA system, while a new column-orthogonal two dimension spread spectrum technique (2D SS) is proposed in Youxi Tang [Proceeding of ICCCAS 2002]. In this paper, we describe this kind of two dimensional spread spectrum technique in detail and represent it strictly. Based on the 2D SS technique, we discuss the orthogonal multicarrier communication system under Rayleigh fading channel with an additive white Gaussian noise. A closed-form expression of the bit error rate performance of this communication system is derived. Numerical result of the performance of this 2D SS multicarrier system shows its advantage in low signal noise ratio.
{"title":"Performance analysis of a two dimensional spread spectrum multicarrier system in Rayleigh fading channel","authors":"Mingqi Li, Q. Peng, Yulin Liu","doi":"10.1109/ICCT.2003.1209902","DOIUrl":"https://doi.org/10.1109/ICCT.2003.1209902","url":null,"abstract":"1-dimensional spread spectrum (1DSS) technology is widely used nowadays, such as in the DS-CDMA system, while a new column-orthogonal two dimension spread spectrum technique (2D SS) is proposed in Youxi Tang [Proceeding of ICCCAS 2002]. In this paper, we describe this kind of two dimensional spread spectrum technique in detail and represent it strictly. Based on the 2D SS technique, we discuss the orthogonal multicarrier communication system under Rayleigh fading channel with an additive white Gaussian noise. A closed-form expression of the bit error rate performance of this communication system is derived. Numerical result of the performance of this 2D SS multicarrier system shows its advantage in low signal noise ratio.","PeriodicalId":237858,"journal":{"name":"International Conference on Communication Technology Proceedings, 2003. ICCT 2003.","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121811363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2003-04-09DOI: 10.1109/ICCT.2003.1209886
Yuanjun Dai, L. Zhang, Yixian Yang
In this paper, we propose a video watermarking technology to hide copyright information by a slight modification of the motion vector in MPEG-2 video bit stream. In this method, watermark is embedded in the motion residual of large value motion vector, then the motion residual are regularized into a modified bit stream from which the watermark information can be retrieved easily and exactly. From the experimental results, this technology has the advantage of little influence on the MPEG decoding speed, little degrading the perceptive effect, capability to embed watermark in a short video sequence, and can be used to watermark directly on compressed and uncompressed video sequence.
{"title":"A new method of MPEG video watermarking technology","authors":"Yuanjun Dai, L. Zhang, Yixian Yang","doi":"10.1109/ICCT.2003.1209886","DOIUrl":"https://doi.org/10.1109/ICCT.2003.1209886","url":null,"abstract":"In this paper, we propose a video watermarking technology to hide copyright information by a slight modification of the motion vector in MPEG-2 video bit stream. In this method, watermark is embedded in the motion residual of large value motion vector, then the motion residual are regularized into a modified bit stream from which the watermark information can be retrieved easily and exactly. From the experimental results, this technology has the advantage of little influence on the MPEG decoding speed, little degrading the perceptive effect, capability to embed watermark in a short video sequence, and can be used to watermark directly on compressed and uncompressed video sequence.","PeriodicalId":237858,"journal":{"name":"International Conference on Communication Technology Proceedings, 2003. ICCT 2003.","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125219230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2003-04-09DOI: 10.1109/ICCT.2003.1209040
Qi Sun, Xiong-jian Liang
Because there are a lot of the self-similarity phenomena found in the communication system, many researchers are doing work in this field. Experimental evidence for self-similarity in various types of data network traffic is overwhelming and continues to grow. In this paper, we point out that Internet traffic has self-similarity using the actual trace in ChinaNet. Then we propose the restricting mechanism and attractor in telecommunication systems as the essential reason of fractal characteristics. In the research of network traffic trace, we cited the fractal theory and explain the reasons of self-similarity property of traffic in telecommunication network and long-range dependent from every aspect. One viewpoint is proposed that the fractal structure of telecommunication network shows the attraction and dissipation energy of long-term trends in systems, which extends the meaning of the original fractal theory.
{"title":"The fractal feature of telecommunication network","authors":"Qi Sun, Xiong-jian Liang","doi":"10.1109/ICCT.2003.1209040","DOIUrl":"https://doi.org/10.1109/ICCT.2003.1209040","url":null,"abstract":"Because there are a lot of the self-similarity phenomena found in the communication system, many researchers are doing work in this field. Experimental evidence for self-similarity in various types of data network traffic is overwhelming and continues to grow. In this paper, we point out that Internet traffic has self-similarity using the actual trace in ChinaNet. Then we propose the restricting mechanism and attractor in telecommunication systems as the essential reason of fractal characteristics. In the research of network traffic trace, we cited the fractal theory and explain the reasons of self-similarity property of traffic in telecommunication network and long-range dependent from every aspect. One viewpoint is proposed that the fractal structure of telecommunication network shows the attraction and dissipation energy of long-term trends in systems, which extends the meaning of the original fractal theory.","PeriodicalId":237858,"journal":{"name":"International Conference on Communication Technology Proceedings, 2003. ICCT 2003.","volume":"423 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116713436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2003-04-09DOI: 10.1109/ICCT.2003.1209028
Seung-Ku Hwang, D. Lyu, K. Chang
With increasing end user demands for wider service due to the rapid growth and variety of IT (information technology) industry, the service with the data rate of 30 Mbps cannot accommodate the future mobile multimedia environment. Therefore, worldwide radio and mobile communication institutes and companies started the R & D of 4G mobile communications system prior to completing the implementation of IMT-2000 system and providing its service. ETRI is one of those organizations endeavoring for the future 4G system with capabilities beyond IMT-2000. With the establishment of R & D project for 4G radio transmission system in January of 2002, ETRI is actively working to develop 4G high-tier system, HMM (high-speed mobile Internet), and Hpi (high-speed portable Internet). In this paper, ETRI's 4G vision and enabling technologies to achieve this vision is described.
{"title":"4G vision and technology development in Korea","authors":"Seung-Ku Hwang, D. Lyu, K. Chang","doi":"10.1109/ICCT.2003.1209028","DOIUrl":"https://doi.org/10.1109/ICCT.2003.1209028","url":null,"abstract":"With increasing end user demands for wider service due to the rapid growth and variety of IT (information technology) industry, the service with the data rate of 30 Mbps cannot accommodate the future mobile multimedia environment. Therefore, worldwide radio and mobile communication institutes and companies started the R & D of 4G mobile communications system prior to completing the implementation of IMT-2000 system and providing its service. ETRI is one of those organizations endeavoring for the future 4G system with capabilities beyond IMT-2000. With the establishment of R & D project for 4G radio transmission system in January of 2002, ETRI is actively working to develop 4G high-tier system, HMM (high-speed mobile Internet), and Hpi (high-speed portable Internet). In this paper, ETRI's 4G vision and enabling technologies to achieve this vision is described.","PeriodicalId":237858,"journal":{"name":"International Conference on Communication Technology Proceedings, 2003. ICCT 2003.","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116917496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2003-04-09DOI: 10.1109/ICCT.2003.1209104
Miaohui Zhang, Jianping Wu, Chuang Lin, Ke Xu
How to provide service differentiation on the Internet is a hot research topic. One proposal is to provide loss rate differentiation by assigning levels of drop precedence to IP packets. In this paper, we propose a new AQM mechanism, weighted SAP (WSAP) to achieve this goal. WSAP is based on a new AQM algorithm simple adaptive proportional (SAP). WSAP can approximate proportional loss rate differentiation, while keeping high link utilization and short queuing delay. Compared with WRED and RIO, WSAP is easier to configure and can provide better performance. Furthermore, an architecture for differentiated service is proposed in this paper. In the design of this architecture, we pay more attention to the characteristics of network traffic in the Internet and try to preserve the Internet's original design principles.
{"title":"WSAP: provide loss rate differentiation with active queue management","authors":"Miaohui Zhang, Jianping Wu, Chuang Lin, Ke Xu","doi":"10.1109/ICCT.2003.1209104","DOIUrl":"https://doi.org/10.1109/ICCT.2003.1209104","url":null,"abstract":"How to provide service differentiation on the Internet is a hot research topic. One proposal is to provide loss rate differentiation by assigning levels of drop precedence to IP packets. In this paper, we propose a new AQM mechanism, weighted SAP (WSAP) to achieve this goal. WSAP is based on a new AQM algorithm simple adaptive proportional (SAP). WSAP can approximate proportional loss rate differentiation, while keeping high link utilization and short queuing delay. Compared with WRED and RIO, WSAP is easier to configure and can provide better performance. Furthermore, an architecture for differentiated service is proposed in this paper. In the design of this architecture, we pay more attention to the characteristics of network traffic in the Internet and try to preserve the Internet's original design principles.","PeriodicalId":237858,"journal":{"name":"International Conference on Communication Technology Proceedings, 2003. ICCT 2003.","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116921873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2003-04-09DOI: 10.1109/ICCT.2003.1209166
Wenhua Jiao, Yong Wang, Ludi Zheng
O-UNI is defined as the optical interface between the service provider (optical transport network) and user client equipment. We have built and demonstrated an O-UNI testbed between IPv6 routers through optical network in IPv6 Global Summit, May 2002. This testbed enhances UNI 1.0 with three features: TNA addressing and resolution, control plan recovery, and IPv6 support in both control and data plane. It is more robust and suitable for clients to access to the optical networks.
{"title":"Experimental demonstration of the enhanced optical user network interface (O-UNI) protocol","authors":"Wenhua Jiao, Yong Wang, Ludi Zheng","doi":"10.1109/ICCT.2003.1209166","DOIUrl":"https://doi.org/10.1109/ICCT.2003.1209166","url":null,"abstract":"O-UNI is defined as the optical interface between the service provider (optical transport network) and user client equipment. We have built and demonstrated an O-UNI testbed between IPv6 routers through optical network in IPv6 Global Summit, May 2002. This testbed enhances UNI 1.0 with three features: TNA addressing and resolution, control plan recovery, and IPv6 support in both control and data plane. It is more robust and suitable for clients to access to the optical networks.","PeriodicalId":237858,"journal":{"name":"International Conference on Communication Technology Proceedings, 2003. ICCT 2003.","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116922275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2003-04-09DOI: 10.1109/ICCT.2003.1209075
Yin Jian-hua, Cao Yang, L. Un, Huang Tian-xi
A new algorithm for active queue management, namely DTB is presented. This buffer control technique is used to enforce approximate fairness among a large number of concurrent Internet flows. Like RED (random early detection) and other AQM (active queue management algorithms), the DTB algorithm can be deployed to actively respond to gateway congestion, keep the gateway in a healthy state, and protect the bandwidth of the fragile flows from being stolen by the bandwidth greedy ones. The algorithm is based on the so-called dual token bucket (DTB) mechanism, it is analyzed and evaluated by simulation, and proved to be effective in protecting the gateway buffer and controlling the fair allocation of bandwidth between flows.
{"title":"On enforcing the fairness of bandwidth allocation among Internet flows","authors":"Yin Jian-hua, Cao Yang, L. Un, Huang Tian-xi","doi":"10.1109/ICCT.2003.1209075","DOIUrl":"https://doi.org/10.1109/ICCT.2003.1209075","url":null,"abstract":"A new algorithm for active queue management, namely DTB is presented. This buffer control technique is used to enforce approximate fairness among a large number of concurrent Internet flows. Like RED (random early detection) and other AQM (active queue management algorithms), the DTB algorithm can be deployed to actively respond to gateway congestion, keep the gateway in a healthy state, and protect the bandwidth of the fragile flows from being stolen by the bandwidth greedy ones. The algorithm is based on the so-called dual token bucket (DTB) mechanism, it is analyzed and evaluated by simulation, and proved to be effective in protecting the gateway buffer and controlling the fair allocation of bandwidth between flows.","PeriodicalId":237858,"journal":{"name":"International Conference on Communication Technology Proceedings, 2003. ICCT 2003.","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117277543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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