Experimental Investigation of IEEE 802.15.4 Transmission Power Control and Interference Minimization

Abstract

Abstract-Although the characteristics of RF transmissions are physically well understood at the lowest levels of communication design, accurately incorporating power and interference effects is one of the most challenging tasks in designing efficient wireless network algorithms. The most noteworthy approaches are the circular transmission and interference "ranges" that do not apply to antennae packages that are not omnidirectional, as well as to non line-of-sight environments of many low power wireless sensor and mesh network. In this paper we experimentally investigate and then model the transmission interference of low power 802.15.4 based transceiver nodes by relying not only on distance but also on the transmit power, orientations, and the relative positions of the transmitter, receiver, and interfering nodes. The experimentally validated power/interference model is then used as the basis for an optimization algorithm that schedules nodes to minimize interference and maximize throughput from a set of senders to a set of receivers.

A survey of wireless technologies coexistence in WBAN: analysis and open research issues

“…Similar results to [75] were obtained; PLR at the receiver increased with the increase of the signal power of the interfering node, and decreased with the increase in the channel spacing. Further, it was shown that interference has larger impact on large packet sizes, this is due to the higher collision and packet error probabilities.…”

“…They have palpable impact in testbed scenarios as compared to simulation and mathematical modeling. The antenna orientation, mobility of nodes, and the human body Packet size [11,67,75,91,98] Physical layer modulation scheme [30,70] Receiver type [30] Nodes mobility and human body [23] [ 23, 25,42] Wireless Netw effect have not been studied mathematically. Moreover, many analytical modeling studies considered SIR more than frequency spacing.…”

“…For example, most of the studies, such as [43,47,67,71,75,79,91], adopted simple scenarios consisting of two WBAN nodes and two interfering nodes, i.e. arranged as transmitterreceiver pairs.…”

“…Testbed-based studies Empirical studies of mutual interference are found in [25,75,91,92]. In both [75] and [91] the deployed WBAN testbed consisted of three nodes; a transmitter, a receiver, and an interferer node.…”

“…In both [75] and [91] the deployed WBAN testbed consisted of three nodes; a transmitter, a receiver, and an interferer node. In [75], the authors studied the effect of distance, orientation of transmitters and receivers, packet size, and the transmission power level on the interference level between the nodes in terms of the packet loss rate (PLR). The exhibited results indicated that an interferer with antenna orientation of 90 or 270 has less effect on PLR compared to other angels.…”