Modeling and Estimation of One-Shot Random Access for Finite-User Multichannel Slotted ALOHA Systems

Wei, Chia-Hung; Cheng, Ray-Guang; Tsao, Shiao-Li

doi:10.1109/lcomm.2012.060112.120376

Cited by 69 publications

(38 citation statements)

References 4 publications

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“…Device b can transmit in slot 2 because its hash result v[4] = 1 and these are two transmitters before it. Devices f and g cannot transmit because they collide at v [10].…”

Section: B Virtual-frame Scheme (Vf)mentioning

confidence: 99%

The hint protocol: Using a broadcast method to enable ID-free data transmission for dense IoT devices

Ren

Tseng

2017

2017 IEEE International Conference on Pervasive Computing and Communications Workshops (PerCom Workshops)

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Abstract-IoT (Internet of Things) has attracted a lot of attention recently. IoT devices need to report their data or status to base stations at various frequencies. The IoT communications observed by a base station normally exhibit the following characteristics: (1) massively connected, (2) lightly loaded per packet, and (3) periodical or at least mostly predictable. The current design principals of communication networks, when applied to IoT scenarios, however, do not fit well to these requirements. For example, an IPv6 address is 128 bits, which is much longer than a 16-bit temperature report. Also, contending to send a small packet is not cost-effective. In this work, we propose a novel framework, which is slot-based, schedule-oriented, and identityfree for uploading IoT devices' data. We show that it fits very well for IoT applications. We propose two schemes, from an ideal one to a more practical one. The main idea is to bundle time slots with certain hashing functions of device IDs, thus significantly reducing transmission overheads, including device IDs and contention overheads.

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“…Device b can transmit in slot 2 because its hash result v[4] = 1 and these are two transmitters before it. Devices f and g cannot transmit because they collide at v [10].…”

Section: B Virtual-frame Scheme (Vf)mentioning

confidence: 99%

The hint protocol: Using a broadcast method to enable ID-free data transmission for dense IoT devices

Ren

Tseng

2017

2017 IEEE International Conference on Pervasive Computing and Communications Workshops (PerCom Workshops)

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“…where N UL is the maximal total number of UEs that can be acknowledged in one response window and p n is the detection probability of the nth preamble transmission due to power-ramping effect [6], where…”

Section: Pre-backoff For Group Pagingmentioning

confidence: 99%

“…The performance analysis of group paging via computer simulations was first addressed in [5]. The first analytical model of a simplified group paging without random backoff was first presented in [6]. The model is then completed and extended in [4] to analyze the performance of group paging by considering all the implementation constraints of the RA procedure specified in LTE networks.…”

Section: Introductionmentioning

confidence: 99%

Analysis of group paging with pre-backoff

Harwahyu

Xian

Sari

et al. 2015

J Wireless Com Network

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Group paging can simultaneously activate hundreds of user equipments (UEs) using a single paging message. Upon receiving the group paging message, all UEs should immediately transmit their paging response messages through the random access channels (RACHs). Simultaneous channel access from a huge group of UEs may result in severe collisions of the RACHs during a very short period of time. In this paper, we propose a pre-backoff method to reduce the collision probability of random access requests. We develop an analytical model to investigate the performance and optimize the setting of the pre-backoff method. The accuracy of the analytical model is verified through computer simulation. Results show that the proposed pre-backoff method can effectively enhance the performance of group paging.

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“…A closed form expression of the collision probability of M2M traffic at the LTE contention phase is provided in [8]. A recent work using a combinatorial model to study the random access in LTE is given in [9]. Different from [9], we also consider the data phase in our analysis.…”

Section: Introductionmentioning

confidence: 99%

“…A recent work using a combinatorial model to study the random access in LTE is given in [9]. Different from [9], we also consider the data phase in our analysis.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the LTE Access Reservation Protocol for Real-Time Traffic

Thomsen¹,

Pratas²,

Stefanović³

et al. 2013

IEEE Commun. Lett.

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Abstract-LTE is increasingly seen as a system for serving real-time Machine-to-Machine (M2M) communication needs. The asynchronous M2M user access in LTE is obtained through a two-phase access reservation protocol (contention and data phase). Existing analysis related to these protocols is based on the following assumptions: (1) there are sufficient resources in the data phase for all detected contention tokens, and (2) the base station is able to detect collisions, i.e., tokens activated by multiple users. These assumptions are not always applicable to LTE -specifically, (1) due to the variable amount of available data resources caused by variable load, and (2) detection of collisions in contention phase may not be possible. All of this affects transmission of real-time M2M traffic, where data packets have to be sent within a deadline and may have only one contention opportunity. We analyze the features of the two-phase LTE reservation protocol and asses its performance, when assumptions (1) and (2) do not hold.

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Modeling and Estimation of One-Shot Random Access for Finite-User Multichannel Slotted ALOHA Systems

Cited by 69 publications

References 4 publications

The hint protocol: Using a broadcast method to enable ID-free data transmission for dense IoT devices

The hint protocol: Using a broadcast method to enable ID-free data transmission for dense IoT devices

Analysis of group paging with pre-backoff

Analysis of the LTE Access Reservation Protocol for Real-Time Traffic

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