摘要:
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).
摘要:
In a method of complexity reduced noise floor estimation in a wireless communications system, determining, for a respective of at least a subset of a plurality of power grid points /c, a product of complementary cumulative distribution functions, each such function corresponding to a respective of a plurality j of provided wideband power measure estimates Ln a sliding window, and determining, for each of said at least subset of power grid points, a probability distribution function of a minimum of said plurality of wideband power measure estimates based on said determined product.
摘要:
In a method of uplink scheduling control in a telecommunication system comprising a node and a plurality of associated user equipment, performing the steps of identifying S10 scheduling loop output signals, scheduling loop input signals, and scheduling loop system states, determining S20 a dynamic space state model representative of a scheduling loop in said system, based on at least a subset of said identified scheduling loop output and input signals and said scheduling loop system states. Subsequently, measuring S30 and storing S40 at least a subset of said identified scheduling loop output signals and said identified scheduling loop input signals. Finally, controlling S50 the plurality of user equipment of said scheduling loop based on optimization of a criterion dependent of said determined dynamic space state model, said stored scheduling loop input signal, and said stored scheduling loop output signals.
摘要:
A method, performed in a positioning node, for performing uplink positioning comprises receiving (210) of a request for uplink positioning of a user equipment. Information about carrier capabilities for uplink positioning measurements for carriers used in a serving cell of the user equipment is obtained (220). The method further comprises deciding (230) of which carrier to be used for uplink positioning measurements, based at least on the information about carrier capabilities. An uplink positioning measurement request for the user equipment using the carrier decided to be used for uplink positioning measurements is transmitted (250). Data representing said requested uplink positioning measurements is received (252). Complementing methods of cooperating network nodes are also disclosed as well as arrangements of the nodes.
摘要:
Methods and arrangements for reporting of measurements in a wireless communication system are disclosed. The embodiments relate to methods and arrangements exercising automated collection of network performance statistics as an alternative to drive tests and reporting function called Minimizing Drive Tests (MDT). The described embodiments for reporting of measurements in a wireless communication system include acquiring suitable confidence information.
摘要:
A received total wideband power in a wireless communications system is measured (202) a number of times during a time interval. A site communication throughput is determined (204) and processed (206) into a time averaged site communication throughput. A probability distribution for received total wideband power is estimated (210) from the measured received total wide-band power. An estimate of a noise floor measure is computed (214) based on the probability distribution for received total wideband power and a noise rise measure is calculated (218) based on the probability distribution for received total wideband power and the estimate of a noise floor measure. According to the present invention, an adjustment (208) of the noise rise measure is provided based on the averaged site communication throughput.
摘要:
Teachings herein improve selection of the positioning method(s) used to obtain positioning information responsive to a positioning request, by approaching positioning QoS holistically. Approached holistically, a joint QoS metric as taught herein takes into account the joint effect of individual QoS parameters of a positioning method, or the joint effect of multiple methods in a sequence. Processing in one or more embodiments thus includes determining a joint QoS metric for each of a plurality of candidate positioning methods or sequences, and selecting a positioning method or sequence based on those joint QoS metrics. By selecting a positioning method or sequence in this way, holistically based on joint QoS metrics rather than a piecemeal approach based on a one-by-one check of individual QoS parameters, selection proceeds flexibly according to actual QoS requirements of position-based services and/or systematically according to the joint effect of multiple positioning methods.
摘要:
A method of selecting the positioning method(s) used to respond to given positioning requests uses historical performance data reflecting the actual performance yielded by one or more of the positioning methods that are generally available for selection. As a non-limiting example, a positioning node maintains or otherwise has access to historical data reflecting the QoS obtained for at least some of the positioning methods supported by the node. Correspondingly, the node compares the QoS requirements associated with an incoming positioning request to the historical performance data, to identify the positioning method(s) that appear to best satisfy the requirements. The positioning node therefore selects the “best” method(s) for responding to a positioning request, not based on “generic” performance characteristics of those methods, but rather based on observed real-world performance of those methods, as applicable to the particular operating environment (radio environment) in which the positioning methods are carried out.
摘要:
One aspect of the present invention extends the number of client and/or service types used in location-based services. The extension provides richer definitions for use in selecting the optimal or otherwise best suited positioning sequences to be used in fulfilling given positioning requests. For example, some types of commercial-related positioning requests are better satisfied with quicker-but-lower-accuracy position determinations, while other types benefit from more-accurate-but-slower position determinations. These and other benefits are provided by extending the type definitions used to identify commercial positioning requests. For example, a UE may be configured to send positioning requests that indicate the extended client or service types. As another example, the network node(s) involved in generating or processing such requests are configured to understand the extended type definitions and/or to map the extended definitions to QoS requirements, or to particular positioning sequences, for requesting that a positioning node carry out that particular positioning sequence.
摘要:
Method and arrangement in a base station, a user equipment and a positioning node, for sending, and obtaining, respectively, a value of a propagation delay of a signal. The signal is sent to the base station from a user equipment. The base station and the user equipment are comprised within a wireless communication system. Also, the base station and the user equipment are adapted to exchange wireless signals. The method is characterised by the step of receiving a signal sent from the user equipment. The method is further characterised by the step of measuring the value of the signal propagation delay of the received signal. Still further, the method is characterised by the step of sending the measured value to the equipment and/or to a positioning node comprised within the wireless communication system.