Control Channel Design Trade-Offs for Ultra-Reliable and Low-Latency Communication System

Ashraf, Shehzad; Lindqvist, Fredrik; Baldemair, Robert; Lindoff, Bengt

doi:10.1109/glocomw.2015.7414072

Cited by 28 publications

(24 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[83] Control channel sparse encoding (CCSE) CCSE is introduced in order to provide the control information using nonorthogonal spreading sequences. [84] Scaled control channel design A scaled-LTE frame structure is proposed assuming the scaling factor to be 5 with a dedicated UL CCHs for all sporadic-traffic users in each transmission time interval with possible smallest SR size. [85] Symbol-level frequency hopping and sequence-based sPUCCH A sequence-based sPUCCH (SS-PUCCH) incorporating two SC-FDMA symbols is introduced in order to meet a strict latency requirement.…”

Section: A Frame/packet Structurementioning

confidence: 99%

“…The potential solutions targeting the control channel enhancements to achieve low latency are illustrated in Table IX. In [83], control channel sparse encoding (CCSE) is introduced with vision to transmit the control information by means of non-orthogonal spreading sequences. A scaled-LTE frame structure is proposed in [84] assuming the scaling factor to be 5 with dedicated UL control channels (CCHs) for all sporadic-traffic users in each TTI with possible smallest scheduling request (SR) size. In [130], short TTI based uplink frame has been proposed for achieving E2E latency no longer than 1 ms.…”

Section: E Control Signalingmentioning

confidence: 99%

See 1 more Smart Citation

A Survey on Low Latency Towards 5G: RAN, Core Network and Caching Solutions

Parvez

Rahmati

Güvenç

et al. 2018

IEEE Commun. Surv. Tutorials

741

395

View full text Add to dashboard Cite

The fifth generation (5G) wireless network technology is to be standardized by 2020, where main goals are to improve capacity, reliability, and energy efficiency, while reducing latency and massively increasing connection density. An integral part of 5G is the capability to transmit touch perception type real-time communication empowered by applicable robotics and haptics equipment at the network edge. In this regard, we need drastic changes in network architecture including core and radio access network (RAN) for achieving end-to-end latency on the order of 1 ms. In this paper, we present a detailed survey on the emerging technologies to achieve low latency communications considering three different solution domains: RAN, core network, and caching. We also present a general overview of 5G cellular networks composed of software defined network (SDN), network function virtualization (NFV), caching, and mobile edge computing (MEC) capable of meeting latency and other 5G requirements.

show abstract

Section: A Frame/packet Structurementioning

confidence: 99%

Section: E Control Signalingmentioning

confidence: 99%

A Survey on Low Latency Towards 5G: RAN, Core Network and Caching Solutions

Parvez

Rahmati

Güvenç

et al. 2018

IEEE Commun. Surv. Tutorials

741

395

View full text Add to dashboard Cite

show abstract

“…To reduce transmission delay, we consider the short frame structure as illustrated in Fig. 2, where TTI equals to the frame duration T f , which is the minimal time granularity of the system (i.e., subframe in [22]). Therefore, the transmission delays and queueing delay should be divisible by frame duration.…”

Section: B Qos Requirementmentioning

confidence: 99%

Joint Uplink and Downlink Resource Configuration for Ultra-Reliable and Low-Latency Communications

She

Yang

Quek

2018

IEEE Trans. Commun.

125

View full text Add to dashboard Cite

Supporting ultra-reliable and low-latency communications (URLLC) is one of the major goals for the fifth-generation cellular networks. Since spectrum usage efficiency is always a concern, and large bandwidth is required for ensuring stringent quality-of-service (QoS), we minimize the total bandwidth under the QoS constraints of URLLC. We first propose a packet delivery mechanism for URLLC.To reduce the required bandwidth for ensuring queueing delay, we consider a statistical multiplexing queueing mode, where the packets to be sent to different devices are waiting in one queue at the base station, and broadcast mode is adopted in downlink transmission. In this way, downlink bandwidth is shared among packets of multiple devices. In uplink transmission, different subchannels are allocated to different devices to avoid strong interference. Then, we jointly optimize uplink and downlink bandwidth configuration and delay components to minimize the total bandwidth required to guarantee the overall packet loss and end-to-end delay, which includes uplink and downlink transmission delays, queueing delay and backhaul delay. We propose a two-step method to find the optimal solution. Simulation and numerical results validate our analysis and show remarkable performance gain by jointly optimizing uplink and downlink configuration. Index TermsThis paper was presented in part at the workshop on ultra-reliable and low-latency communications in wireless networks with IEEE Global Communications Conference 2016 [1].Changyang She was with the 2 Ultra-reliable and low-latency communications, resource configuration, packet delivery mechanism.

show abstract

“…This requires that interleaving is only performed over frequency and not over time. However, for control channels that have block lengths smaller than 10 bits, block codes are preferred due to better performance and manageable decoding complexity [14].…”

Section: Modulation and Coding Schemesmentioning

confidence: 99%

“…Moreover, early decoding is considered to be an important aspect for delay sensitive communication. Hence, the control signaling and reference symbols need to be placed at the start of the subframe to allow early decoding of the received data [14].…”

Section: G Outlook: Beyond the Lte Evolutionmentioning

confidence: 99%