Abstract:
In a method of enabling improved reporting of high precision position determination data in a cellular communication system, performing the steps of: in response to a positioning request detecting (S10) two different cell polygons, each representative of a geographical location of a respective cluster of high precision position determinations. Subsequently, joining (S20) said two different cell polygons to form a merged cell polygon, by selectively joining a respective outer perimeter of each said polygon in order to minimize an resulting merged cell polygon area and maintaining the number of corners of said merged cell polygon below a predetermined threshold. Finally, reporting (S30) said merged cell polygon to a network node, thereby providing position determination data originating from two different cell polygons as a single merged cell polygon.
Abstract:
A method for noise rise estimation in a wireless communication system comprises measuring (210) of received total wideband power a plurality of times and computing (212) an estimate of a noise floor measure based on a number of the measured received total wideband powers. An interference whitening is performed (214) based on one of GRAKE, GRAKE+ and chip equalizer. A useful signal power for the first user after interference whitening is determined (216). A first user noise floor compensation factor is derived (218) based on combining weights for the first user used in the interference whitening. A code power to interference ratio measure for said first user is obtained (220). A noise rise measure is calculated (222), based at least on the useful signal power for the first user after interference whitening, the first user noise floor compensation factor, the code power to interference ratio measure for the first user and the noise floor measure.
Abstract:
A method for load scheduling in a WCDMA communication system utilizing GRake equalizing radio reception comprises estimating (210) of channel estimates for a plurality of users. Combining weights are established (220) for a GRake equalizing reception for the present received uplink digital radio signals. Function parameters of a predicted future load measure function is predicted (230) as a function of individual grants of the plurality of users based on at least the channel estimates and the combing weights, taking sensitivity for interference suppression provided by the GRake equalizing for each of the plurality of users into account. The predicting further comprises adaptation of the function parameters for changed load equilibrium levels caused by the individual grants of the plurality users. A set of grants for the users is selected (240) based on the future load measure function. Uplink load is scheduled (250) according to the selected set of grants.
Abstract:
A method, performed in a positioning node of a wireless communication system, for positioning reporting in the wireless communication system comprises providing (210) of first positioning data of a first format in three dimensions. The first format represents a polygon with corner points. The corner points have coordinates in three dimensions. The first positioning data is transformed (220) into second positioning data of a second format. The second format represents the first positioning data as a representation of an elliptic cylinder that is centered around a centre point and has an elliptic base in a base plane. The second positioning data is reported (230) over an interface of the wireless communication system.
Abstract:
An arrangement (90) for noise rise estimation in a wireless communication system comprises a power measuring means (45) for measuring received total wideband power. A means (52) for computing estimates of a noise floor measure bases its computation on a number of the measured received total wideband powers. A means (80) for calculating values of a biased noise rise measure bases its calculations on a number of received total wideband powers or an estimation derived therefrom and a respective one of the estimates of a noise floor measure. A means (91) for providing a measure representing a long term behaviour of the values of the biased noise rise measure is provided. A means (93) for obtaining a value of a present, unbiased noise rise measure, bases its function on the measure representing a long term behaviour of the values of the biased noise rise measure. A corresponding method is also disclosed.
Abstract:
A method for supervision of faults in a receiving signal chain of a wireless communication comprises providing (210) of data representing measured received powers in the receiving signal chain at a number of time instances. The method further comprises determining of (220) a noise floor value at a number of time instances based on the data representing measured received powers. A time evolution of the determined noise floor values is registered (230) and any occurrence of a fault in the receiving signal chain is detected (240) based on the registered time evolution. An arrangement for performing supervision of faults in a receiving signal chain is also presented.
Abstract:
A method for reporting positioning data from a node B in a cellular communication system comprises performing (210), in a node B, of a measurement of a time of radio signal propagation concerning signalling with a first user equipment within a coverage of the node B. The measurement gives a time value. The time value is coded (212), in the node B, as a multi-symbol time report sequence. Auxiliary positioning information data concerning the first user equipment is obtained (214) in the node B. At least one symbol of the multi-symbol time report sequence is modified (216) (218) in the node B, for representing the auxiliary positioning information data. The modified multi-symbol time report sequence is reported from the node B. A positioning method, a node B and a positioning node are also disclosed.
Abstract:
An arrangement (10) for noise rise estimation comprises a front end signal conditioning arrangement (9) and an interference whitener (14) connected thereto. The interference whitener (10) is arranged for providing interference whitening of a front end signal. A processor (20) is arranged for measuring received total wideband power received at the front end signal conditioning arrangement (9) a plurality of times. An estimate of a noise floor measure is computed by the processor (20) based on the measured received total wideband powers. The processor (20) determines an equivalent total wideband power of the output from the interference whitener (14). The processor (20) also calculates a noise rise measure, based on the equivalent total wideband power and the noise floor measure, and compensates the noise rise measure for the interference whitening. A digital receiver (12) is connected to the output from the interference whitener (14).
Abstract:
A method for noise rise estimation in a wireless communication system comprises receiving (210) of radio signals. An interference whitening (212) is performed. A useful signal power for a first user after the interference whitening is determined (214) for a plurality of time instances. Furthermore, a first user noise floor compensation factor is derived (216) based on combining weights for the first user used in the interference whitening. A probability distribution for a compensated useful signal power for the first user is estimated (218). A conditional probability distribution of a noise floor measure is computed (220). A noise rise measure for the first user is then calculated (222) based at least on the compensated useful signal power for the first user and the conditional probability distribution of a noise floor measure.
Abstract:
In a method of improved clustering for providing position determination assisting data in a cellular communication system, providing (S10) a plurality of clusters of points, said points being results of high-precision reference measurements, said points of each of said cluster having the same unique radio fingerprinting tag, identifying (S20) a target cluster, said target cluster having a number of points less than a predetermined threshold. Finally, merging (S30) said target cluster with at least one adjacent cluster of said provided plurality of clusters to provide a merged cluster with an increased number of high-precision reference measurements.