Amendments to the ZigBee Protocol

Similarly to the previous one, this chapter focuses on several amendments to the ZigBee network layer, as proposed by the standard. In particular, a cluster scheduling solution is proposed and paramount to achieve networking at larger scales, while still be able to meet the quality of service requirements. Then new routing algorithms are proposed based on the possibility to group several nodes based on some common property, such as, e.g., their geographical position. Finally, using the mechanisms defined at the Data Link layer, new security and privacy mechanisms are available at the higher layers of the protocol stack.