Ericsson Gmbh

Other

Telefonaktiebolaget Lm Ericsson (publ)

George P Yost

Shankari Panchapakesan

Ali R Shah

Hossam H'mimy

Ken Guttenfelder

Shawn Kim

Yunis A Shahdad

Clinton E Harper

Yunis Shahdad

Yildirim Sahin

Methods and systems for measuring interference reciprocity between uplink and downlink directions in a wireless communications system. Correlation data between uplink and downlink interference, e.g., bit error rate, during transmissions between wireless terminals and base stations is measured. The correlation data is analyzed to determine if uplink and downlink reciprocity falls within a predetermined range. Adjustment criteria may be determined when reciprocity falls outside a predetermined range. Measurement may be automated for near real-time results. Systems include means for measuring correlation between uplink and downlink interferences during communication between a wireless terminal and a wireless base station controller ; and a computer for analyzing the correlation.

Systems and methods for measuring interference reciprocity between uplink and downlink directions in a wireless communications system

In a communications system comprising a public or other network ( ), a wireless network ( ), and an Internet Protocol based network (IP network) ( ) configured as a transport mechanism between the public or other network ( ) through a public network interface ( ) and the wireless network ( ) through a base station interface ( ), a method of controlling signal traffic over multiple IP subnets, the method comprising the steps of gathering traffic data associated with the multiple IP subnets, and analyzing the traffic data to determine which of the multiple IP subnets provides the most appropriate connection for transmitting the data stream between the wireless network and the public or other network for achieving a desired amount of traffic distribution over the multiple IP subnets.

Method and system for carrying data, voice and video across an internet protocol based wireless telecommunications network

A method for locating concentration of mobile radio (MR) traffic in a coverage area by identifying the locations where MRs ( ) in the coverage area are actively making calls. Signal strength measurements at test sites ( ) of interest within the coverage area ( ) are made and compared with signal strength measurements taken from operating MRs ( ). A plot of matches can be kept and used to traffic the locations within the coverage area ( ) revealing where concentrations in the coverage area ( ) exist.

System and method for profiling the location of mobile radio traffic in a wireless communications network

A method and system are disclosed for identifying one or more sources of co-channel interference within a selected cell in a mobile telecommunications network. The system includes data collecting devices which measure and store interference levels within the selected sell and traffic levels within a plurality of candidate cells, any of which may potentially contribute to the interference. The system further includes a processing element which, for each candidate cell, determines a partial correlation coefficient between the stored interference levels and the stored traffic levels for the candidate cell. The processing element additionally determines the multiple correlation coefficient between the stored interference levels and the stored traffic levels for all of the candidate cells. Based upon the partial and multiple correlation coefficients, the processing element is capable of accurately identifying the candidate cells which contribute to the co-channel interference in the selected cell.

System and method for identifying a source of interference in a mobile telecommunications network

A telecommunications system and method is disclosed for providing a cell traffic supervision alarm within a base station (BS) to notify the operator at a Mobile Switching Center (MSC) serving the BS that the BS has had no traffic for a period of time that is unreasonably long. The definition of &ldquo;unreasonably long&rdquo; is tied to normal traffic patterns at the BS. An alarm threshold time, which is defined as time between the cessation of all traffic on a BS and the triggering of the alarm, can be calculated based upon a statistical analysis of the traffic history of the BS to determine a time interval such that the probability is acceptably small that under normal conditions the BS would have gone for that entire length of time with no traffic at all. At the expiration of the alarm threshold time, the alarm is activated.

Method and apparatus for providing a cell traffic supervision alarm

A telecommunications system and method is disclosed for improving the accuracy of the Time of Arrival (TOA) information extracted from the Timing Advance (TA) values reported by base stations. This can be accomplished by utilizing an average of m (m=2 or more) consecutive TA values, which will on average have a smaller mean-squared error than using a single TA value. By averaging multiple consecutive TA values to obtain a single measurement of TOA, the accuracy of the location algorithm employing the TOA information can be improved, and thus, the geographical location of a mobile terminal within a cellular network can be more accurately determined. The improvement in the accuracy of the location of the mobile terminal can be applied to both a stationary mobile terminal and a moving mobile terminal.

System and method for accurate positioning of mobile terminals

A method for verifying coverage area by measuring the signal strength throughout the area, estimating the radius of the area based on the measurements, measuring the signal strength at the estimated radial distance, and determining if there is a sufficient proportion of signals at the estimated radial distance with a strength which exceeds a threshold.

System and method for coverage verification based upon cell border

A system and method for improving the accuracy of a location measurement within a telecommunications system is disclosed. A combination of Time Difference of Arrival (TDOA) and Timing Advance (TA) location measurement techniques enables Automatic Location Identification (ALI) with minor modifications to the telecommunications system, whereby the combination exhibits reduced measurement error and resolution of ambiguities present in either technique separately.

System and method for mobile telephone location measurement using a

A system and method for improving the accuracy of a location measurement within a telecommunications system is disclosed. An elliptical search area is defined about an estimated mobile terminal location within the telecommunications system. The elliptical area is an optimum area for locating the mobile terminal, with size, eccentricity, and orientation of the ellipse being determined by the configuration of base stations, the mobile terminal's position, a desired probability of coverage, and the known measurement errors in the quantities measured by the ALI technique.

System and method using elliptical search area coverage in determining

A system for carrying skis and ski poles either by hand or over the shoulder comprises an elongated strap assembly extending between fore and aft ski loops to freely receive the ends of a pair of skis in side-by-side relationship. An adjustment buckle interconnects first and second strap members and their associated fore and aft ski loops to selectively create a transport loop of reduced size for carrying the skis by hand or one of enlarged size for carrying the skis over the shoulder. Fore and aft loops may also be provided to receive a pair of ski poles. In one embodiment, the strap members extend away from the ski loops at locations adjacent the ring members and the strap members are threaded through the ring members to form the pole loops such that as the strap members are drawn in a direction away from the ring members, the size of the pole loops is reduced until the pole loops snugly engage the ski poles. In another, preferred, embodiment, the strap members extend away from the ski loops at locations spaced from the ring members and the strap members are threaded through the ring members to form the pole loops such that as the strap members are drawn in a direction away from the ring members, the size of both the pole loops and the ski loops is reduced until the pole loops snugly engage the ski poles and the ski loops snugly engage the skis.

Ski carrying system

A universal mounting system for attaching replacement gutters to the roof of a building which has roof shingles already in place. It is particularly applicable in those instances in which an elongated hanger strap extends upwardly at longitudinally spaced locations along the length of commonly available gutter hardware. An elongated anchor plate is employed in conjunction with each hanger strap and has a width substantially greater than that of its associated hanger strap. In one instance, the anchor plate is folded about a transverse fold line so as to define a nailing pad and a support pad. An elongated, laterally extending, slot is formed adjacent the fold line to define a mounting strip between the slot and the fold line. The anchor plate is slipped under the roof shingles so as not to be visible and is positioned such that the slot is just exposed, then is attached to the roof by means of a nail piercing the nailing pad only. The support strap is threaded upwardly through the elongated slot, then bent around the mounting strip, first forwardly and then downwardly, any excess length thereof being cut off and discarded. The resultant connection between the support strap and the mounting strip on the anchor plate allows freedom of swinging movement of the gutter trough relative to the building.

Growing community of inventors

DeSoto, TX, United States of America

George P Yost