摘要:
A method of performing packet level transmission scheduling in a communications systems including a plurality of cells, each cell including a base station and plurarity of mobile stations. The method performs scheduling while considering radio resource allocation at the wireless access node. In a schedule plan phase of the method, average power and average effective data rate are determined for all mobile stations in the system. In addition, the planned fractions of frames ρ that each mobile in the system will transmit is determined so that resources are allocated fairly. In the actual schedule phase of the method, current power and effective data rate values are compared to the average power values. This information along with the ρ values is used to determine the actual schedule of packet transmissions for all mobiles in a particular cell.
摘要:
A pulmonary artery pressure estimator attaches a plurality of acoustic sensors to a patient so as to measure a second heart sound. The sensors are arranged so that an A2 component of the second heart sound is maximized from at least one of the sensors and a P2 component is maximized from at least another one of the sensors. Electrodes are also attached to the patient so as to measure a cardiac interval. A splitting interval is derived from the A2 and P2 components, which is normalized by the cardiac interval. The normalized splitting interval provides an estimation of the pulmonary artery pressure (PAP).
摘要:
A method and an apparatus to disambiguate requests are presented. In one embodiment, the method includes receiving a request for information from a user. Then data is retrieved from a back-end database in response to the request. Based on a predetermined configuration of a disambiguation system and the data retrieved, the ambiguity within the request is dynamically resolved.
摘要:
A method and apparatus for estimating a location of pulmonary and aortic components of second heart sounds of a patient over an interval. The method comprises the steps of producing an electronic representation of heart sounds of the patient over the interval, identifying at least one second heart sound in the interval using the electronic representation, for each identified second heart sound generating an estimated value for a location of the aortic component and the pulmonary component. There is also included a method for using the estimated location of the aortic component and the pulmonary component for estimation of the blood pressure in the pulmonary artery of a patient.
摘要:
A method and an apparatus to disambiguate requests are presented. In one embodiment, the method includes receiving a request for information from a user. Then data is retrieved from a back-end database in response to the request. Based on a predetermined configuration of a disambiguation system and the data retrieved, the ambiguity within the request is dynamically resolved.
摘要:
A method and apparatus for estimating a location of pulmonary and aortic components of second heart sounds of a patient over an interval. The method comprises the steps of producing an electronic representation of heart sounds of the patient over the interval, identifying at least one second heart sound in the interval using the electronic representation, for each identified second heart sound generating an estimated value for a location of the aortic component and the pulmonary component. There is also included a method for using the estimated location of the aortic component and the pulmonary component for estimation of the blood pressure in the pulmonary artery of a patient.
摘要:
A machine-readable storage medium containing a program element for execution by a computing device for performing spike and artifact detection in EG data. The program element comprises a spike detection module for processing EG data to detect spikes. Each spike is a candidate having a likelihood of being related to a physiological event of interest. The program element further comprises an artifact detection module. The artifact detection module is operative to compute respective models of events manifested by the respective spikes detected by the spike detection module, to use the computed models to determine which spikes among the spikes detected by the spike detection module have a high likelihood of being artifacts, to filter the spikes detected by the spike detection module on the basis of the computed models to produce filtered data and to output the filtered data.
摘要:
A method and an apparatus to disambiguate requests are presented. In one embodiment, the method includes receiving a request for information from a user. Then data is retrieved from a back-end database in response to the request. Based on a predetermined configuration of a disambiguation system and the data retrieved, the ambiguity within the request is dynamically resolved.
摘要:
A time division multiple access protocol that prevents data collisions and that maximizes bandwidth utilization in a long distance communications network by performing implicit ranging and dynamic assignment of time slots. The propagation delay that would result when data travels from an end station to the hub is determined using an implicit ranging method. Time slots in a synchronization signal are assigned to end stations based upon the requests from end stations and the availability of time slots. Each end station is notified of its assigned time slot(s) and propagation delay and is provided with a timing signal which is the synchronization signal delayed by its propagation delay. Each end station then starts to transmit its data at the beginning of a time duration that is twice its propagation delay before the start of its assigned time slot(s) in its timing signal. Each end station transmits its data for the duration of its assigned time slot(s). The data from each of these end stations travels in a pipe-lined manner through the link toward the hub and arrives at the hub during the assigned time slots in the synchronization signal. Each time slot preferably includes a guard band during which no data is transmitted; the duration of the guard band can be minimized thus resulting in more efficient bandwidth utilization.