Two-Slot Based Model of the IEEE 802.11ah Restricted Access Window with Enabled Transmissions Crossing Slot Boundaries

Recently appeared the IEEE 802.11ah standard has introduced a new channel access mechanism, so-called Restricted Access Window (RAW). This mechanism allows an access point (AP) to reduce contention for the channel in overloaded Wi-Fi networks by limiting the number of stations simultaneously accessing the channel. The 802.11ah AP divides all associated stations into groups and allocates for each group an interval of time, which is called a RAW slot. This paper considers the RAW mechanism with enabled transmissions crossing slot boundaries, which means that a station is allowed to end the current transmission attempt even after a completion of the allocated RAW slot. We present a new mathematical model, which allows estimating throughput and energy consumption with this mechanism, and optimizing performance of RAW.

[1]  A. Girotra,et al.  Performance Analysis of the IEEE 802 . 11 Distributed Coordination Function , 2005 .

[2]  Evgeny M. Khorov,et al.  Modelling machine type communication in IEEE 802.11ah networks , 2015, 2015 IEEE International Conference on Communication Workshop (ICCW).

[3]  Evgeny M. Khorov,et al.  A survey on IEEE 802.11ah: An enabling networking technology for smart cities , 2015, Comput. Commun..

[4]  Mikko Valkama,et al.  Performance analysis of IoT-enabling IEEE 802.11ah technology and its RAW mechanism with non-cross slot boundary holding schemes , 2015, 2015 IEEE 16th International Symposium on A World of Wireless, Mobile and Multimedia Networks (WoWMoM).

[5]  Jeroen Famaey,et al.  Real-Time Station Grouping under Dynamic Traffic for IEEE 802.11ah , 2017, Sensors.

[6]  Kathleen Philips,et al.  A 4mW-RX 7mW-TX IEEE 802.11ah fully-integrated RF transceiver , 2017, 2017 IEEE Radio Frequency Integrated Circuits Symposium (RFIC).

[7]  Lin Cai,et al.  RSS-Based Grouping Strategy for Avoiding Hidden Terminals with GS-DCF MAC Protocol , 2017, 2017 IEEE Wireless Communications and Networking Conference (WCNC).

[8]  Vladimir M. Vishnevsky,et al.  IEEE 802.11 Wireless LAN: Saturation Throughput Analysis with Seizing Effect Consideration , 2002, Cluster Computing.

[9]  Tae-Jin Lee,et al.  Enhancement of IEEE 802.11ah MAC for M2M Communications , 2014, IEEE Communications Letters.

[10]  Lei Zheng,et al.  Performance analysis of grouping strategy for dense IEEE 802.11 networks , 2013, 2013 IEEE Global Communications Conference (GLOBECOM).

[11]  Ali Hazmi,et al.  Performance evaluation of IEEE 802.11ah and its restricted access window mechanism , 2014, 2014 IEEE International Conference on Communications Workshops (ICC).

[12]  Emad Alsusa,et al.  Enhancing the throughput of 802.11ah sectorized networks using AID-based backoff counters , 2017, 2017 13th International Wireless Communications and Mobile Computing Conference (IWCMC).

[13]  Lei Zheng,et al.  Performance Analysis of Group-Synchronized DCF for Dense IEEE 802.11 Networks , 2014, IEEE Transactions on Wireless Communications.

[14]  Ren Ping Liu,et al.  Power save with Offset Listen Interval for IEEE 802.11ah Smart Grid communications , 2013, 2013 IEEE International Conference on Communications (ICC).

[15]  Jeroen Famaey,et al.  Implementation and validation of an IEEE 802.11ah module for ns-3 Reference: , 2016 .