2015 12th International Symposium on Wireless Communication Systems (ISWCS). Brussels, Belgium, August 25-28, 2015. PROCEEDINGS
Due to the scarcity of license exempt spectrum at low frequencies, next generation multi-gigabit wireless communication will use 60 GHz. Propagation characteristics make impossible to use omnidirectional high-rate low-power transmission at long distances. As for directional transmission, it cannot be efficient with random channel access while the usage of deterministic one even in the state-of-the-art 60 GHz technologies - e.g. IEEE 802.11ad - raises a question of how much channel time shall be allocated for a stream to satisfy its QoS requirement. The main contribution of the paper is the mathematical model of Constant Bit Rate (CBR) flow transmission in IEEE 802.11ad networks, which allows to answer this question.
Various networking protocols disseminate much control information. An important task is to reduce the amount of such information in order to free channel resources for user data. In the paper, we study a novel group-based approach for dissemination of control information introduced in the latest version of the IEEE 802.11 standard. The key idea of this approach is to join various pieces of information into a small number of groups and send differential updates related only to those groups which content is changed. However, the group management algorithm (GMA) which directly affects the performance of such an approach is not specified. We consider a simple GMA, develop an analytical model to estimate the amount of sent control information, and show that this amount is significantly less than for the classical full dump approach.