Link Level Performance Assessment of Reliability-Based HARQ Schemes in LTE

Woltering, Matthias; Wübben, Dirk; Dekorsy, Armin; Braun, Volker; Doetsch, Uwe

doi:10.1109/vtcspring.2014.7022973

Cited by 11 publications

(4 citation statements)

References 14 publications

(21 reference statements)

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“…In Woltering et al [16], in order to increase the system throughput, a multi-level ACK/NACK transmission scheme is proposed. In Milo and Hanus [17], the influence of the HARQ scheme on the probabilistic-temporal characteristics of the system is analyzed.…”

Section: A Existing Workmentioning

confidence: 99%

A Packet Delay Assessment Model in the Data Link Layer of the LTE

Amirsaidov

Qodirov

2021

JOIV : Int. J. Inform. Visualization

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The issues of modeling and evaluating the characteristics of the LTE data link layer functioning are considered. Transmitting packets in the data link layer are represented by a probabilistic-temporal graph consisting of two subgraphs. The ﬁrst subgraph describes the operation of the HARQ protocol, and the second subgraph describes the operation of the ARQ protocol. The ﬁrst subgraph is nested within the second subgraph. The probabilities of correct reception, non-error detection, and retransmission of packets in the MAC and RLC layers and generating functions of the packet service time based on the HARQ and ARQ protocols are determined. With the help of generating functions, the average value, variance, and coeﬃcient of variation of the packet service time are determined. To calculate the average packet delay time in the LTE data link layer, the type of queuing system is selected, taking into account the coeﬃcient of variation of the packet service time. The analysis of packets' delay time in the network's data link layer is carried out for diﬀerent values of the intensity of packet arrival and the probabilities of a bit error in the physical layer of the network. For the sustainable functioning of the data link layer of the network, the limit values of the intensity of the arrival of packets are determined for a given probability of a bit error in the physical layer of the network.

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Section: A Existing Workmentioning

confidence: 99%

A Packet Delay Assessment Model in the Data Link Layer of the LTE

Amirsaidov

Qodirov

2021

JOIV : Int. J. Inform. Visualization

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“…For instance, reliability-based HARQ schemes enable the receiver to request data retransmission with different redundancy levels. This can further improve the communication efficiency, particularly, for delivering large size packets [9], [10], [11].…”

Section: Introductionmentioning

confidence: 99%

“…The feedback channel is prone to errors due to the noise and interference in the system, which can result in wrong detection of ACK/NACK signals [11]. Typical cellular systems, such as Long-Term Evolution (LTE), rely on higher layers to correct these kinds of errors [12].…”

Section: Introductionmentioning

confidence: 99%

Asymmetric ACK/NACK Detection for Ultra - Reliable Low - Latency Communications

Shariatmadari

Duan

Iraji

et al. 2018

2018 European Conference on Networks and Communications (EuCNC)

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The fifth generation wireless systems are expected to encounter new services in order to provide connectivity for a wide range of applications. One of the considered services is ultra-reliable low-latency communications (URLLC), which has stringent requirements on availability, reliability, and latency. The communication efficiency of URLLC can be improved by employing error control protocols, such as automatic repeat request (ARQ) and hybrid ARQ (HARQ). However, this requires a reliable feedback channel to carry acknowledgement (ACK) and negative ACK (NACK) signals. Improving the detection reliability of ACK and NACK signals simultaneously entails allocating more resources for the feedback channel. Instead, we propose employing an asymmetric signal detection to provide a better protection for NACK signals compared to the ACK signals, without assigning more resources to the feedback channel. The simulation results show that the asymmetric signal detection can achieve a better resource utilization for URLLC.

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“…In such scenarios, frequent handover interruption time and fastvarying mmWave link impact both the reliability and latency requirements. Although existing techniques, such as Hybrid automatic repeat request (hybrid ARQ or HARQ) [18], can provide a certain degree of reliability, this may violate the latency requirements. To satisfy high-reliability and guard against the potential radio link failure, we introduce SDN as the architectural enabler for efficient coordination among multiple BSs and UE to meet the service requirements.…”

Section: Introductionmentioning

confidence: 99%

SDN - Architectural Enabler for Reliable Communication Over Millimeter-Wave 5G Networks

Sahoo

Weng

Wei

2018

2018 IEEE Globecom Workshops (GC Wkshps)

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Millimeter-wave (mmWave) frequency bands offer a new frontier for next-generation wireless networks, popularly known as 5G, to enable multi-gigabit communication; however, the availability and reliability of mmWave signals are significantly limited due to its unfavorable propagation characteristics. Thus, mmWave networks rely on directional narrow-beam transmissions to overcome severe path-loss. To mitigate the impact of transmission-reception directionality and provide uninterrupted network services, ensuring the availability of mmWave transmission links is important. In this paper, we proposed a new flexible network architecture to provide efficient resource coordination among serving basestations during user mobility. The key idea of this holistic architecture is to exploit the software-defined networking (SDN) technology with mmWave communication to provide a flexible and resilient network architecture. Besides, this paper presents an efficient and seamless uncoordinated network operation to support reliable communication in highly-dynamic environments characterized by high density and mobility of wireless devices. To warrant high-reliability and guard against the potential radio link failure, we introduce a new transmission framework to ensure that there is at least one basestation is connected to the UE at all times. We validate the proposed transmission scheme through simulations.

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Link Level Performance Assessment of Reliability-Based HARQ Schemes in LTE

Cited by 11 publications

References 14 publications

A Packet Delay Assessment Model in the Data Link Layer of the LTE

A Packet Delay Assessment Model in the Data Link Layer of the LTE

Asymmetric ACK/NACK Detection for Ultra - Reliable Low - Latency Communications

SDN - Architectural Enabler for Reliable Communication Over Millimeter-Wave 5G Networks

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