摘要:
A method performed by a network node for determining a mobility criterion related to a wireless communications device in a wireless communications network. The network node obtains an information related to an UL propagation condition associated to the wireless communications device. The network node determines a measure of imbalance between the UL propagation condition and a DL propagation condition associated to the wireless communications device. The measure of imbalance is based on the information related to the UL propagation condition. The network node determines the mobility criterion based on the measure of imbalance between the UL propagation condition and the DL propagation condition.
摘要:
There is provided a method for cell search in a communications network. The method is performed by a wireless terminal. The method comprises detecting a level of energy received in a frequency interval to be higher than a threshold value. The method comprises acquiring auxiliary information regarding available cells in the frequency interval based on frequency location and width of the frequency interval. The method comprises performing a cell search in at least a sub-band of the frequency interval using the auxiliary information. There is also presented a wireless terminal configured to perform such a method, a computer program, and a computer program product for such a method.
摘要:
Antenna nodes are controlled to maintain a respective radio cell, each cell having one and the same physical cell identity. The antenna nodes are further controlled to maintain the respective radio cell in a single direction substantially along a path such that each wireless communication device, during movement in a movement direction along the path, can connect either to consecutive antenna nodes towards which the wireless communication device is moving or connect to consecutive antenna nodes away from which the wireless communication device is moving.
摘要:
Systems and methods relating to cell detection are disclosed. In some embodiments, systems and methods are disclosed for performing cell detection while suppressing interference from either a current serving cell or a previous serving cell of a wireless device depending on whether the wireless device is approaching the current serving cell or leaving the current serving cell. In this manner, cell detection is improved in a manner that is particularly suitable for, e.g., high speed train scenarios, but the systems and methods disclosed herein are not limited thereto.
摘要:
Techniques for configuring and using measurement gap patterns for offloading purposes are disclosed. An example method, performed in a network node of a wireless communication network, includes selecting (410) a measurement gap pattern to be used by the mobile terminal, the measurement gap pattern having a series of measurement gap bursts such that the measurement gap bursts are separated by a repetition period and each measurement gap burst comprises two or more measurement gaps, and signaling (420) the measurement gap pattern to the mobile terminal. In some embodiments, the repetition period is chosen so that the measurement gap pattern repetition period and the long-DRX cycle length in some embodiments are related to each other by an integer power of N.
摘要:
A method of a wireless communication device for a cellular communication system is disclosed. According to the method, a signal comprising a first known signal sequence and a second known signal sequence for each of one or more first cells of the cellular communication system is received, and the first and second known signal sequences of each of the one or more first cells are detected based on the received signal. For at least one of the one or more first cells, one of the first known signal sequence, the second known signal sequence, and a combination of the first and second known signal sequences is selected for channel estimation. The selection is based on the detected first and second known signal sequences of the one or more cells. Channel estimation of the at least one of the one or more first cells is performed based on the signal sequence selection. In some examples, the method may further comprise performing interference cancellation of at least one of the first and second known signal sequences of the at least one of the one or more first cells based on the channel estimation and detecting one or more second cells of the cellular communication system after the interference cancellation. Corresponding computer program product, arrangement and wireless communication device are also disclosed.
摘要:
A network node is connected to a plurality of antenna nodes that are located along a path where a plurality of wireless communication devices are located. The antenna nodes are controlled (302) to maintain reception radio lobes substantially along the path such that the wireless communication devices can communicate with the network node via the reception radio lobes. From a detected (304) radio frequency signal, a determination (306) is made that a UE belongs to a group of UEs having common Doppler radio frequency characteristics. This determination then enables processing (308) of the received signal involving the common Doppler characteristics.
摘要:
Systems and methods relating to cell detection are disclosed. In some embodiments, systems and methods are disclosed for performing cell detection while suppressing interference from either a current serving cell or a previous serving cell of a wireless device depending on whether the wireless device is approaching the current serving cell or leaving the current serving cell. In this manner, cell detection is improved in a manner that is particularly suitable for, e.g., high speed train scenarios, but the systems and methods disclosed herein are not limited thereto.
摘要:
A mobility management method of a wireless communication device is disclosed. The method comprises receiving a first signal related to a first cell, determining a size of the first cell based on the first signal, receiving a second signal related to a second cell, and determining a size of the second cell based on the second signal. The method further comprises scaling at least one mobility parameter based on the determined sizes of the first and second cells, and performing mobility management in the second cell based on the scaled mobility parameters. Corresponding computer program product, arrangement and devices are also disclosed.
摘要:
In one aspect of the teachings herein, network-side and device-side methods and apparatus identify a subset of frequency layers on which a wireless device performs regular inter-frequency scanning. The subset is identified from among a set of frequency layers that are candidates for inter-frequency measurement by the device. In an example, the wireless device scans the set of frequency layers and the corresponding scan results are used to select the best frequency layers in the set. In turn, the wireless device performs regular inter-frequency measurements on the frequency layers in the selected subset. Scanning thus can be understood as a mechanism for intelligently selecting preferred ones among a number of frequency layers that are candidates for inter-frequency measurement by the device.