Patent ID: 8884754

Claim:
A method of monitoring vital sign data of a patient using a body sensor network with a set of on-body vital sign sensors and at least one off-body monitoring device, the method comprising the following steps: with each on-body sensor, sensing a vital sign of the patient and transmitting vital sign data indicative of the sensed vital sign of the patient to the off-body monitoring device, wherein the on-body sensors communicate wirelessly with the off-body monitoring device and with one another, wherein at least one of the on-body sensors determines an inclination of the at least one on-body sensor relative to the off-body monitoring device, wherein the at least one on-body sensor determines the on-body location of the at least one on-body sensor, wherein the at least one on-body sensor determines a direct data delivery route between at least one on-body sensor for which the inclination and the on-body location has been determined and the off-body monitoring device, determining a reliability value indicative of data packet error rates along a direct data delivery route on the basis of the inclination and the on-body location of the at least one on-body sensor, and routing the vital sign data of the at least one on-body sensor via another on-body sensor to the off-body monitoring device if the reliability value of the direct data delivery route between the at least one on-body sensor and the off-body monitoring device is less than a predefined value.