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DiamEAP: An open-source Diameter EAP application and its evaluation 一个开源的Diameter EAP应用程序及其评估
2010 16th Asia-Pacific Conference on Communications (APCC) Pub Date : 2010-12-01 DOI: 10.1109/APCC.2010.5679993
Souheil Ben Ayed, F. Teraoka
{"title":"DiamEAP: An open-source Diameter EAP application and its evaluation","authors":"Souheil Ben Ayed, F. Teraoka","doi":"10.1109/APCC.2010.5679993","DOIUrl":"https://doi.org/10.1109/APCC.2010.5679993","url":null,"abstract":"The Diameter Protocol is a AAA protocol that solves the problems of previous AAA protocols such as RADIUS. Diameter EAP Application is one of Diameter applications that supports authentication using EAP. In this research, we designed a new state machine for Diameter EAP Server and implemented the first open-source Diameter EAP Application, called DiamEAP. It is available under BSD-like license. DiamEAP is designed to be extensible so that any new EAP method can be implemented separately as a shared library called EAP method plug-in. Newly added EAP methods are supported without modifications to the DiamEAP implementation. In addition, DiamEAP provides a cryptography library that any EAP method plug-in can use. As one of EAP methods, we implemented EAP-TLS on DiamEAP. We also present our implementation of a Diameter EAP Server and evaluated the basic performance. As a result, DiamEAP's processing time for 20 sessions/second is about 11.9 ms and a duration for authenticating a user is around 45.3 ms. DiamEAP is supported by the AAA working group of the WIDE Project.","PeriodicalId":402292,"journal":{"name":"2010 16th Asia-Pacific Conference on Communications (APCC)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127376472","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}
引用次数: 8
Indoor location-assisted device switching system for VoIP application 用于VoIP应用的室内定位辅助设备交换系统
2010 16th Asia-Pacific Conference on Communications (APCC) Pub Date : 2010-12-01 DOI: 10.1109/APCC.2010.5679700
S. H. Syed Ariffin, N. H. Abdul Wahab, N. Fisal, L. A. Latiff, K. Choong, R. M A Raj Mohamed, M. Abbas
{"title":"Indoor location-assisted device switching system for VoIP application","authors":"S. H. Syed Ariffin, N. H. Abdul Wahab, N. Fisal, L. A. Latiff, K. Choong, R. M A Raj Mohamed, M. Abbas","doi":"10.1109/APCC.2010.5679700","DOIUrl":"https://doi.org/10.1109/APCC.2010.5679700","url":null,"abstract":"Ubiquitous computing for context aware system collects information from many static and moving devices as well as sensor integrated objects. To provide valuable services, it is necessary to track the location of the users or objects. There are many possible applications that can apply location-assisted service such as child tracking, supermarket trolley alert system, firefighter tracking and many more. This paper proposed an indoor location assisted device switching for Voice over Internet Protocol (VoIP) application using session initiated protocol (SIP) for Wireless Local Area Network (WLAN) based. We present real test-bed measurements for indoor environment giving the results of the system operation as well as the system performance. The system performance shows excellent accuracy of 1m.","PeriodicalId":402292,"journal":{"name":"2010 16th Asia-Pacific Conference on Communications (APCC)","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133390089","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}
引用次数: 1
Link adaptation of MIMO-OFDM systems using hidden Markov model for high speed railway 基于隐马尔可夫模型的高速铁路MIMO-OFDM系统链路自适应
2010 16th Asia-Pacific Conference on Communications (APCC) Pub Date : 2010-10-01 DOI: 10.1109/APCC.2010.5679714
Kun-Yi Lin, Hsin-Piao Lin, Ming-Chien Tseng
{"title":"Link adaptation of MIMO-OFDM systems using hidden Markov model for high speed railway","authors":"Kun-Yi Lin, Hsin-Piao Lin, Ming-Chien Tseng","doi":"10.1109/APCC.2010.5679714","DOIUrl":"https://doi.org/10.1109/APCC.2010.5679714","url":null,"abstract":"A link adaptation scheme for MIMO-OFDM systems over high speed rail environment is addressed in this paper. In this study, a selection method of MIMO transmission mode and the modulation and coding scheme (MCS) according to the Rician channel K-factor from our previous work is considered. A hidden Markov model of time-varying Rician channel K-factor is constructed by using the real measured channel data on the high speed rail train. With the constructed hidden Markov model, the time correlation of Rician channel K-factor can be obtained and the time-varying K-factor value can be generated. By using the hidden Markov model, the K-factor value can be predicted to facilitate link adaptation since the K-factor may vary during feedback, especially in high mobility scenario. Simulation results show an average throughput improvement of 5Mbps.","PeriodicalId":402292,"journal":{"name":"2010 16th Asia-Pacific Conference on Communications (APCC)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115137947","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}
引用次数: 7
MIMO relaying for multi-user transmission using a two stage transmit and relay pre-processing technique 用于多用户传输的MIMO中继采用两级传输和中继预处理技术
2010 16th Asia-Pacific Conference on Communications (APCC) Pub Date : 2010-10-01 DOI: 10.1109/APCC.2010.5680008
A. Falahati, Z. Samadi
{"title":"MIMO relaying for multi-user transmission using a two stage transmit and relay pre-processing technique","authors":"A. Falahati, Z. Samadi","doi":"10.1109/APCC.2010.5680008","DOIUrl":"https://doi.org/10.1109/APCC.2010.5680008","url":null,"abstract":"The use of multiple antennas at both ends of a wireless link, known as multiple-input multiple-output (MIMO) wireless, has been shown to offer significant improvement in link reliability and spectral efficiency through space-time coding and spatial multiplexing respectively. In this contribution, a novel relaying strategy that uses MIMO relays in a two-hop wireless network is proposed to support multiuser transmission. We apply a two stage transmit and relay preprocessing technique in order to eliminate the multiple-user interference. The fixed relays process the received signal with linear operations and forward it to the multiple users i.e. the amplify-and-forward(AF) scheme. The users are partitioned into the number of groups equal to the number of relays. Each group of users communicates with its own specified relay terminal. The effective channel from transmitter to the relays and from relays to the users can be modeled as a broadcast channel and interference channel, respectively. This paper optimizes the relay amplification matrix and base station transmit power according to achievable sum rate at the users, neglecting the direct links from the base station to the users and with certain structure at the relays. Simulation results show that the sum rate achieved by the proposed system architecture is close to the sum rate achieved by the decode-and-forward relaying scheme.","PeriodicalId":402292,"journal":{"name":"2010 16th Asia-Pacific Conference on Communications (APCC)","volume":"151 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116664007","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}
引用次数: 2
Utilization-aware dynamic GTS allocation scheme in IEEE 802.15.4 基于利用率感知的IEEE 802.15.4动态GTS分配方案
2010 16th Asia-Pacific Conference on Communications (APCC) Pub Date : 2010-10-01 DOI: 10.1109/APCC.2010.5679767
H. Cho, S. Bae, M. Chung
{"title":"Utilization-aware dynamic GTS allocation scheme in IEEE 802.15.4","authors":"H. Cho, S. Bae, M. Chung","doi":"10.1109/APCC.2010.5679767","DOIUrl":"https://doi.org/10.1109/APCC.2010.5679767","url":null,"abstract":"IEEE 802.15.4 is a standard for low-rate wireless personal area network (LR-WPAN) and specifies medium access control (MAC) sub-layer and physical layer. MAC sub-layer in IEEE 802.15.4 provides a guaranteed time slot (GTS) to guarantee quality of service for applications requiring low latency or minimum data rate. However, since the maximum number of GTSs allowed in each superframe is limited up to seven in IEEE 802.15.4, efficient GTS allocation scheme is required to improve utilization of wireless resources and enhance quality of service. In this paper, we propose utilization-aware dynamic GTS allocation scheme for IEEE 802.15.4 to increase throughput and decrease data transmission latency. To obtain our objective, we introduce states and priorities of devices for GTS allocation. The state is utilized to determine priority of devices. PAN coordinator dynamically allocates GTSs to devices in descending order of their priorities. Performance of the proposed scheme is evaluated by simulation on C++. From the results, we confirm that our proposed scheme has better performance than the conventional IEEE 802.15.4 in terms of throughput and packet waiting time.","PeriodicalId":402292,"journal":{"name":"2010 16th Asia-Pacific Conference on Communications (APCC)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117213438","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}
引用次数: 9
Degree distribution of XORed fountain codes: Theoretical derivation and analysis xor喷泉代码的度分布:理论推导与分析
2010 16th Asia-Pacific Conference on Communications (APCC) Pub Date : 2010-10-01 DOI: 10.1109/APCC.2010.5679773
Lucie Nodin, A. Apavatjrut, C. Goursaud, J. Gorce
{"title":"Degree distribution of XORed fountain codes: Theoretical derivation and analysis","authors":"Lucie Nodin, A. Apavatjrut, C. Goursaud, J. Gorce","doi":"10.1109/APCC.2010.5679773","DOIUrl":"https://doi.org/10.1109/APCC.2010.5679773","url":null,"abstract":"In this work, we focus on the use of network coding in a wireless sensor network where data is already encoded at the source node with fountain codes, in particular LT or Raptor codes. These codes have a specific degree distribution to follow in order to obtain an efficient decoding process. However, adding a layer of network coding on such packets triggers a distorsion of the degree distribution. Consequently, the packet overhead needed for the decoding process can grow significantly.","PeriodicalId":402292,"journal":{"name":"2010 16th Asia-Pacific Conference on Communications (APCC)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125864244","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}
引用次数: 6
Suppression of synchronization errors in OFDM based carrier aggregation system OFDM载波聚合系统中同步误差的抑制
2010 16th Asia-Pacific Conference on Communications (APCC) Pub Date : 2010-10-01 DOI: 10.1109/APCC.2010.5679745
Xiupei Zhang, H. Ryu, Jin-up Kim
{"title":"Suppression of synchronization errors in OFDM based carrier aggregation system","authors":"Xiupei Zhang, H. Ryu, Jin-up Kim","doi":"10.1109/APCC.2010.5679745","DOIUrl":"https://doi.org/10.1109/APCC.2010.5679745","url":null,"abstract":"OFDM (Orthogonal Frequency Division Multiplexing) has been chosen as the air interface technique for LTE (Long Term Evolution) standard. Furthermore, CA (Carrier Aggregation) is defined by 3GPP (the 3rd Generation Partnership Project) to support wide-bandwidth transmission. However, OFDM system is sensitive to synchronization errors generated by multipath delay, Doppler shift and oscillator instability. In this paper, we address the synchronization problem in non-continuous CA scenario and propose a block type pilot based synchronization algorithm to suppress the STO (Sampling Timing Offset) and CFO (Carrier Frequency Offset). The pilot pattern used here is CAZAC (Constant Amplitude Zero Autocorrelation) sequence, which is also exploited in LTE-Advanced standard. Since the proposed method is a parallel processing, different bands could experience different synchronization errors. Simulation results show the proposed method can significantly improve system performance and has smooth performance when synchronization errors vary.","PeriodicalId":402292,"journal":{"name":"2010 16th Asia-Pacific Conference on Communications (APCC)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126088164","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}
引用次数: 8
Throughput enhancement by cross-layer header compression in WLANs 无线局域网中跨层报头压缩的吞吐量增强
2010 16th Asia-Pacific Conference on Communications (APCC) Pub Date : 2010-10-01 DOI: 10.1109/APCC.2010.5679711
Hussain Syed Kazmi, Haroon Raja
{"title":"Throughput enhancement by cross-layer header compression in WLANs","authors":"Hussain Syed Kazmi, Haroon Raja","doi":"10.1109/APCC.2010.5679711","DOIUrl":"https://doi.org/10.1109/APCC.2010.5679711","url":null,"abstract":"A major limiting factor in increasing the throughput of wireless networks has been the bottleneck of prohibitive signaling overhead. A number of header compression schemes have been proposed to solve this particular problem. These, however, come with their set of limitations and suffer from a loss of practicality in certain cases. Our contribution in this paper is two-fold; firstly, we propose a practical framework for cross-layer header compression which improves vastly on existing data rates (by more than 25% of raw throughput at high SNRs). This is achieved by applying independent compression algorithms to both MAC and PHY data units, thus ensuring better throughput. Secondly, we analyze the performance of proposed scheme in slow fading as well as fast fading environments to demonstrate robustness.","PeriodicalId":402292,"journal":{"name":"2010 16th Asia-Pacific Conference on Communications (APCC)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122725204","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}
引用次数: 2
Modeling satellite Positioning errors in different configurations from end user's viewpoint 从终端用户的角度对不同构型的卫星定位误差进行建模
2010 16th Asia-Pacific Conference on Communications (APCC) Pub Date : 2010-10-01 DOI: 10.1109/APCC.2010.5679708
Xiaoying Kong, Li Liu, Tich Phuoc Tran
{"title":"Modeling satellite Positioning errors in different configurations from end user's viewpoint","authors":"Xiaoying Kong, Li Liu, Tich Phuoc Tran","doi":"10.1109/APCC.2010.5679708","DOIUrl":"https://doi.org/10.1109/APCC.2010.5679708","url":null,"abstract":"Global Navigation Satellite Systems (GNSS) provide positioning service to civil applications. At the end user's side, these positioning services will have different position accuracy levels when satellite signal configurations and receiver noise levels are different. In this paper, a position error modeling is presented using a black-box approach. Using this approach, end users will treat the entire signal biases and receiver noises as a black-box transfer function. No efforts are made to model many different individual error sources of satellite signals and receivers. Further, a different type of sensor is chosen to aid the error de-correlation. Experimental results in different configurations are presented.","PeriodicalId":402292,"journal":{"name":"2010 16th Asia-Pacific Conference on Communications (APCC)","volume":"2013 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114806615","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}
引用次数: 2
Adaptive sampling for node discovery: Wildlife monitoring & sensor network 节点发现的自适应采样:野生动物监测和传感器网络
2010 16th Asia-Pacific Conference on Communications (APCC) Pub Date : 2010-10-01 DOI: 10.1109/APCC.2010.5679990
S. Sivaramakrishnan, A. Al-Anbuky, Barbara Breen
{"title":"Adaptive sampling for node discovery: Wildlife monitoring & sensor network","authors":"S. Sivaramakrishnan, A. Al-Anbuky, Barbara Breen","doi":"10.1109/APCC.2010.5679990","DOIUrl":"https://doi.org/10.1109/APCC.2010.5679990","url":null,"abstract":"Searching for the next hop node in mobile sparse wireless sensor networks for data exchange is a challenging task. This involves frequently sending radio beacons that drain battery power and reduces the life of the sensor node. This work proposes a novel energy efficient approach of adaptively sampling the network connectivity.","PeriodicalId":402292,"journal":{"name":"2010 16th Asia-Pacific Conference on Communications (APCC)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127875883","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}
引用次数: 4
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