The study of dynamic multi-channel scheme with channel de-allocation in wireless networks

Shin, Haw-Yun; Wu, Jean-Lien C.

doi:10.1016/j.comnet.2004.01.006

Cited by 5 publications

(6 citation statements)

References 16 publications

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“…On the other hand, channel re-allocation schemes (RAS) can significantly decrease call blocking probability and packet transmission time by re-allocating the idle channels (which is referred to as rate compensation). However, none of these works on adaptive resource allocation, [14]- [28], considered LA.…”

Section: Introductionmentioning

confidence: 96%

“…ARA strategies selectively adjust the user transmission rates according to network conditions. This is achieved through a channel deallocation scheme (DAS) and/or a channel re-allocation scheme (RAS) [19]- [28]. On the one hand, in the case when there are no free channels in the system, some of the allocated channels to active users may be de-allocated (which is referred to as rate degradation) to serve higher priority calls and/or to mitigate the high blocking rate caused in high speed mobile communication networks when resource aggregation is used to increase the data rate.…”

Section: Introductionmentioning

confidence: 99%

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Dynamic resource allocation in integrated voice/data wireless networks with link adaptation

Sandoval-Arechiga

Cruz-Perez

Ortigoza-Guerrero³

2005

GLOBECOM '05. IEEE Global Telecommunications Conference, 2005.

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In this paper, the performance of dynamic resource allocation and channel de-allocation in integrated voice/data wireless networks with link adaptation is mathematically analyzed and evaluated. To our knowledge, all previous related works published in the literature have considered only link adaptation (LA) or dynamic resource allocation (DRA) separately. Additionally, a DRA strategy with link quality-aware prioritized channel de-allocation (called DRA LA DAS) is proposed. With the DRA LA DAS scheme that calls with the greatest number of channels and the worst link quality are degraded first. In this way, in DRA LA DAS preference is given to data users with good quality link which, on average, retain resources less time than data users with bad quality link. Numerical results show that the proposed DRA LA DAS strategy significantly improves system performance. The GSM/GPRS system is used as a case study. The GSM voice new call blocking and forced termination probabilities, GPRS packet dropping probability, average GPRS packet transmission time, and channel utilization are analyzed.

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Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Dynamic resource allocation in integrated voice/data wireless networks with link adaptation

Sandoval-Arechiga

Cruz-Perez

Ortigoza-Guerrero³

2005

GLOBECOM '05. IEEE Global Telecommunications Conference, 2005.

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“…In turn, channel re-allocation schemes (RAS) can significantly decrease call blocking probability and packet transmission time by re-allocating the idle channels (which is referred to as rate compensation). However, none of the works in [11][12][13][14][15][16][17][18][19] on flexible resource allocation considered LA. To the authors' knowledge, few studies exist ( [2][3][4][5]) that have evaluated the performance of integrated voice/data cellular networks at the system level when LA is used 3 .…”

Section: Introductionmentioning

confidence: 99%

“…FRA strategies selectively adjust the user transmission rates according to network conditions. This is achieved through a channel de-allocation scheme (DAS) and/or a channel re-allocation scheme (RAS) [12][13][14][15][16][17][18][19]. On the one hand, in the case when there are no free channels in the system, some of the allocated channels to ongoing calls may be de-allocated (which is referred to as rate degradation) to serve higher priority calls and/or to mitigate the high blocking rate caused when resource aggregation is used to increase the data rate.…”

Section: Introductionmentioning

confidence: 99%

Teletraffic Analysis for the Performance Evaluation of De-Allocation/Re-Allocation Strategies in GSM/GPRS Cellular Networks

Sandoval-Arechiga

Cruz-Perez

Ortigoza-Guerrero³

2007

2007 IEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications

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A teletraffic analysis for the performance evaluation of the joint use of Dynamic Resource Allocation (DRA), Channel De-Allocation (DAS), and Channel Re-Allocation (RAS) strategies in GSM/GPRS networks is developed. In addition, an efficient DRA strategy with a link quality awareness policy, Channel De-Allocation and Re-Allocation policies as well as user prioritization (called DRA LA DAS RAS) is proposed. To the authors' knowledge, most related works have either studied Link Adaptation (LA) or Dynamic Resource Allocation (DRA) strategies as independent topics but have failed to address their combined effect on GSM/GPRS systems. DRA LA DAS RAS uses both call degradation and call compensation techniques. Calls with the largest number of channels allocated and the worst link quality are degraded first. Conversely, calls with the lowest number of channels allocated and the best link quality are upgraded first. This allows upgraded calls to release resources more rapidly, making them readily available for new calls. Numerical results show that the proposed DRA LA DAS RAS strategy significantly improves system performance, i.e. up to 82% (74%) {58%} [37%] <27%> less blocking probability relative to the DRA (DRA LA with p=0.75) {DRA DAS} [DRA LA DAS with p=0.75] strategy.

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“…The channel (frequency, spreading code, time slot, or combination of them) de-allocation scheme provided by mobile system can efficiently enhance performance in data service and can meet different QoS requirement by using dynamic channel allocation. A number of dynamic channel allocation schemes [11][12][13] were proposed to improve system performance (e.g. voice-call blocking probability and data delay, etc.)…”

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confidence: 99%

The study of quick download mechanism in an infrastructural wireless environment

Shin

2006

Int J Communication

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SUMMARYFrequent handoff consumes a lot of system capability and signalling resources in a mobile system. In this paper, we present download mechanisms in mobile systems or broadcast systems to support data users to receive the whole packet in time before moving out of the coverage area. Three download strategies: Quick Download using Multi-channel (QDM) scheme, Prior Download using Single channel (PDS) scheme and the Quit Download (QUD) scheme are proposed in this study where the efficiencies of the three strategies are compared with the one without particular treatment. Some significant estimations such as the percentage of handoff data users having completed service before leaving the cell, the mean waiting time of non-handoff data users, and the blocking probability of data users are analysed and compared. The numerical results show that, the QDM strategy is most efficient in reducing the handoff rate, the QUD strategy can assure the waiting time of non-handoff data users and the PDS strategy can keep the handoff rate constant at light and heavy voice load. Furthermore, various number of guard channels for data users are evaluated in terms of data and voice performance based on various download strategies.

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The study of dynamic multi-channel scheme with channel de-allocation in wireless networks

Cited by 5 publications

References 16 publications

Dynamic resource allocation in integrated voice/data wireless networks with link adaptation

Dynamic resource allocation in integrated voice/data wireless networks with link adaptation

Teletraffic Analysis for the Performance Evaluation of De-Allocation/Re-Allocation Strategies in GSM/GPRS Cellular Networks

The study of quick download mechanism in an infrastructural wireless environment

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