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.

A method of selecting a cellular network entails determining a current location of a mobile device by obtaining location data from an application on the mobile device, prioritizing cellular network frequency bands based on the current location to define a band priority, and selecting the cellular network based on the band priority. This method expedites selection of the cellular network when a mobile device is powered on, when its cellular radiofrequency transceiver is activated or when returning from an out-of-coverage area.

The present invention may provide a method and apparatuses for transmitting and receiving a downlink/uplink physical channel when an in-band operation is supported by a radio access system that supports a narrow band Internet of things (NB-IoT). As an embodiment of the present invention, a method for receiving a physical downlink broadcasting channel (M-PBCH) by a terminal in a radio access system that supports a narrow band Internet of things (NB-IoT) system may comprise the steps of: receiving a higher layer signal indicating an in-band deployment mode; receiving a narrow band primary synchronization signal (M-PSS) and a narrow band secondary synchronization signal (M-SSS), configured for the NB-IoT systems; obtaining a cell identifier (N-Cell ID) of the NB-IoT system from the M-SSS; and receiving an M-PBCH using the N-Cell ID in the in-band deployment mode. In this instance, the in-band deployment mode indicates that the NB-IoT system is configured in a band of a legacy LTE system.

Certain aspects of the present disclosure provide techniques for generating and processing demodulation reference signals transmitted with PBCH. Specifically, the techniques described herein relate to mapping DMRS tones to REs in the PBCH based on a Cell ID.

Techniques are described that support techniques for directional discovery in a millimeter wave communications system. A vehicle-to-everything (V2X) communications system may support beam discovery procedures that use directional beams to discover other entities, establish directional communication links with other entities, or maintaining directional communication links with other entities. The beam discovery procedure may include a sweep pattern where a transmitting entity may probe with directional beams in a plurality of beam directions. During a beam discovery procedure a transmitting entity may transmit discovery signals in a plurality of different directions and a receiving entity may listen for the discovery signals in a plurality of different directions. The sweep patterns of the transmitting entity and the receiving entity may be coordinated to increase a likelihood that the receiving entity will discover the transmitting entity.

Embodiments of the present disclosure relate to the field of communications technologies, and in particular, to a communication method and a device. Second user equipment executes some tasks required for communication between first user equipment and a network device, and the first user equipment properly communicates with the second user equipment. In this way, energy consumption of the first user equipment required for communication with the network device can be reduced, thereby prolonging a standby time and improving user experience.

A method of selecting a cellular network entails determining a current location of a mobile device by obtaining location data from an application on the mobile device, prioritizing cellular network frequency bands based on the current location to define a band priority, and selecting the cellular network based on the band priority. This method expedites selection of the cellular network when a mobile device is powered on, when its cellular radiofrequency transceiver is activated or when returning from an out-of-coverage area.

The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for performing SCG re-establishment in dual connectivity in wireless communication system, the method comprising: detecting radio link failure on a secondary node, wherein the UE is configured with a master node and the secondary node; and receiving signals from candidates of a new secondary node for obtaining information about which cell is a best candidate on the new secondary node to prepare for radio link failure on the secondary node; and initiating RRC connection re-establishment procedure for recovery from the radio link failure of the secondary node if a cell which is to be a PSCell on a new secondary node is selected in a cell list.

This application relates to the field of communication technologies and discloses a communication method and a communication apparatus. One example method includes: A network device sends temporary SSB burst configuration information to a terminal device served by a secondary serving cell, where the temporary SSB burst configuration information includes a periodicity and/or an offset for sending a temporary SSB burst by the network device in the secondary serving cell configured for the terminal device. The network device sends a temporary SSB burst in the secondary serving cell based on the temporary SSB burst configuration information, where a temporary SSB included in the temporary SSB burst does not include a PBCH.

Provided are a cell ID determination method and apparatus for a receiving device in a wireless communication system. The cell ID determination method for a receiving device may include: receiving a first synchronization signal and a second synchronization signal; generating a first joint signal by concatenating the first synchronization signal and the second synchronization signal; calculating the correlation between the first joint signal and each of a preset number of cell IDs; and determining a cell ID using the calculated correlations.