摘要:
In a method of uplink interference congestion control in an interference suppression capable receiving node associated with a plurality of users in a wireless communication system, applying interference suppression to received signals in the node, to provide interference suppressed received signals. Subsequently, estimating a rise over thermal value for the uplink, based on the interference suppressed received signals, and determining a load measure for the uplink based on the estimated rise over thermal value. Finally, controlling interference congestion on the uplink based on the determined load measure.
摘要:
The present invention provides methods and arrangements 300 which are configured to determine a noise rise estimates in a radio access node of a Radio Network System 100 supporting Multi-Carrier High-Speed Packet Access transmission of user radio traffic between a radio access node and one or more User Equipments. The arrangement is provided with a combiner combining the estimated thermal noise power floors of all carriers of a set of carriers sharing the same antenna branch, into a single thermal noise power floor estimate, valid for all carriers in said set of carriers sharing the same analogue signal path. A noise rise determiner computes noise rise estimates as a quotient of the momentary received total wideband power of a carrier related to an analogue signal path, and said combined thermal noise power floor for said analogue signal path.
摘要:
Mobile broadband traffic has been exploding in wireless networks resulting in an increase of interferences and reduced operator control. Networks are also becoming more heterogeneous putting additional demand in interference management. Scheduler schedules uplink transmissions from UEs based on a load prediction algorithm that typically assumes worst case. However, UEs do not always use full power granted, and thus, much of granted radio resources are wasted. To address these and other issues, technique(s) to accurately predict/estimate other cell interferences and thermal noise separately and to accurately predict/estimate load utilization probability and variance is(are) described. Inventive estimation technique(s) can be used to schedule UEs to more fully utilize available radio resources. Extended Kalman filtering can be adapted for use in estimation providing low order computational complexity.
摘要:
A first network node (111) and a method therein for controlling load in a first cell (121) of the first network node (111) are provided. The first network node (111) comprises a multi-stage receiver. The first network node (111) computes an interference cancellation gain, at an intermediate stage of the multi-stage receiver. Furthermore, the first network node (111) estimates neighbour cell interference from interfering signals while accounting for a load utilization. The load utilization relates to power transmitted and power granted. The first network node (111) calculates a load measure for stability based on at least the interference cancellation gain and the neighbour cell interference. Next, the first network node (111) controls the load in the first cell (121) based on the load measure for stability.
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 scaling apparatus and method scales uncertainty criteria (horizontal and vertical accuracy requirements) originally received from an end user before the uncertainty criteria is sent on to a wireless terminal (30) as requirements on the accuracy of location positioning performed by/for the wireless terminal. In an example embodiment the amount/degree of scaling is selected according to a configured best estimate of the confidence and uncertainty relation, and such best estimate can be based on the majority of the terminals of the network. For a WCDMA radio access network (RAN) case the scaling can be performed in a radio network controller (RNC). For a Long Term Evolution (LTE) radio access network (RAN) case the scaling can be performed in the evolved Serving Mobile Location Center (eSMLC) node. In another case the scaling can alternatively be performed in the wireless terminal itself.
摘要:
The position of a mobile device served in a cell of a serving node of a wireless communication network is estimated by estimating an angle-of-arrival (AoA) between the mobile device and the serving node based on a precoding matrix indicator (PMI) determined for the serving node in a downlink direction or for the mobile device in an uplink direction. Also estimated is the AoA between the mobile device and a non-serving neighbor node of the wireless communication network based on a PMI determined for the neighbor node in the downlink direction or for the mobile device in the uplink direction. The downlink and/or uplink AoA estimation can be further enhanced by employing interference cancellation in the mobile device and in the radio node, respectively. The position of the mobile device is estimated based on the estimated AoAs.
摘要:
A system, computer software and method for collecting, in addition to position data, additional positioning data in a user terminal served by a communication network. The method includes initiating, by generating a message within the user terminal, collection of the positioning data, where the positioning data includes information based on which a physical location of the user terminal is determined; measuring, by the user terminal, at least one parameter related to the physical location of the user terminal in response to the message; producing, within the user terminal, measurement reports that include the at least one parameter; selecting, within the user terminal, one or more measurement reports that were generated in response to the message generated by the user terminal; reporting the selected one or more measurement reports to an interface within the user terminal; and transmitting, from the interface, the reported one or more measurement reports to an external server or to the communication network.
摘要:
A user equipment (120), a first radio network node (130) and a positioning node (110) are comprised in a Long Term Evolution system (100). The user equipment (120) receives (2000, 2010) a request for path loss related information. The user equipment (120) estimates (2020) and sends (2030, 2040) the path loss related information. Moreover, the first radio network node (110, 130) sends (2010, 2060) a request for the path loss related information. The first radio network node (110, 130) receives (2030) the path loss related information. Furthermore, the positioning node (110) sends (2000, 2050) a request for the path loss related information. The positioning node (110) receives (2040, 2080) the path loss related information. In some examples, the positioning node (110) associates (2110) the path loss related information to at least one cell area description, thereby creating a database of cell area descriptions and path loss related information associated thereto.
摘要:
A method for noise rise estimation in a wireless communication system comprises measuring (210) of received total wideband power of an antenna a plurality of times. An estimate of a noise floor measure is computed (212) based on at least a number of the measured received total wideband powers of the antenna. Interference whitening of a received signal is performed (214) per user for a multitude of users. A useful signal power per user after the interference whitening, preferably Frequency Domain Equalization, is determined (216). A noise rise measure per user is calculated (220), based at least on the useful signal power per user and the noise floor measure. The calculation in turn comprises compensation of the noise rise measure per user for the effects of the interference whitening. An arrangement for noise rise estimation is adapted for such a method. A radio base station comprises such an arrangement.