Abstract: A method for evaluating a buildings wireless performance, the method comprising: constructing an environment model, the environment model comprising a layout of the building, a power density of transmitters PT[W/m2], and a considered frequency band fc; computing a signal to interference plus noise ratio (SINR) for the building in dependence on the environment model; computing a SINR for an open space in dependence on the environment model, the computing size for the open space being the same as the computing size of the building, and wherein the open space is an ideal space in absence of the building or other surroundings; comparing the SINR for the building with the SINR for the open space; and in dependence on the comparison, evaluating the building wireless performance by calculating an interference power gain and an intended power gain for the building.

Abstract: A method for locating the source of a passive intermodulation (PIM) fault in a radio frequency (RF) system, the method comprising: a) generating a PIM fault fingerprint database by: modelling an RF network; defining a plurality of PIM fault patterns for the modelled RF network by defining PIM faults at one or more sources; simulating a received RF signal for each respective PIM fault pattern; generating the PIM fault fingerprint database in dependence on the simulated received RF signals for each defined PIM fault pattern; b) measuring an RF signal for a real network having a PIM fault and abstracting the measured RF signal to define a given signal; c) searching and matching the given signal using the fingerprint database to determine the PIM fault pattern; and d) locating the source of the PIM fault, or giving a further measuring guideline in dependence on the determined PIM fault pattern.

Abstract: A method for rapidly creating an indoor wireless signal fingerprint database, comprising the following steps: constructing an indoor and outdoor combined three-dimensional scene model of a target building, predicting wireless signal field intensity information of 3D space using a ray-tracing algorithm, selecting a small quantity of testing points to perform manual field measurements and recording the wireless signal intensity information, correcting/calibrating 3D ray-tracing propagation model parameters based on the difference between the actually measured wireless signal intensity information and the theoretical wireless signal intensity information calculated through the 3D ray-tracing propagation model.

Abstract: Method of positioning blind coverage regions in an indoor wireless network. The method comprises the following steps: constructing an indoor and outdoor combined three-dimensional spatial structural model of a target scene; recording and storing information of wireless access equipment which can be received by the target scene, both from the indoor wireless network and from an outdoor (e.g., cellular) network with overlapping coverage; establishing a wireless fingerprint database of the target building covering both the indoor and the outdoor wireless networks; when loss of coverage is detected, the UE handing over to the outdoor network to transmit a measurement report from which the outdoor network can derive the UE's position (e.g.

Abstract: Method of autonomous detection and positioning method of indoor wireless network faults, the method comprising: building an indoor three-dimensional spatial structural model and an indoor transmitting antenna model of a target building, calculating the signal strength of the indoor transmitting antenna model inside the target building according to a ray-tracing propagation model algorithm to determine key testing positions of the target building, each key test position being associated to an individual transmitting antenna and maximizing the difference between the signal strength generated by its corresponding antenna and that generated by other antennas, deploying mobile phones with an automatic dial testing function at the key testing positions of indoor wireless networks and starting the dial testing mobile phones when the wireless networks are idle, collecting measurement reports reported by the dial testing mobile phones, detecting and locating faults of indoor networks and devices according to the measu