Abstract: The disclosure discloses a method for judging and optimizing the comprehensive performance of a twin-screw rotor profile, belonging to the field of compressor design and manufacturing. The method determines the relationship among a contact line length, a leakage triangle and an area utilization coefficient of a compressor rotor profile by establishing an expression of a comprehensive performance index of the performance of the compressor rotor profile, so that during the design of the compressor rotor profile, the performance of the designed compressor rotor profile can be judged according to the method, so as to provide a reference index for optimizing the rotor profile, improve the design efficiency of the compressor rotor profile and provide a high-performance rotor profile for producing a high-performance compressor.

Abstract: Embodiments disclosed herein provide various aspects that would allow for Vehicle to Everything (V2X) or peer-to-peer (P2P) or sidelink (SL) communications. In an embodiment, a communication device may include: a memory for storing computer-readable instructions; and processing circuitry, configured to process the instructions stored in the memory to: obtain a first path loss between the communication device and a base station, wherein the communication device is coupled to the base station; calculate a second path loss based on one or more sidelink reference signal received power (S-RSRP) indicators received by the communication device, wherein the S-RSRP indicators are received from one or more communication devices within a communication range of the communication device; and determine a transmit (Tx) power of the communication device based on the first path loss and the second path loss.

Abstract: In wireless communication systems and methods for high-speed mobility deployments, a mobility status of a communication device can be determined. For example, the speed at which the communication device is traveling can be determined (e.g. such as communication devices traveling on a high-speed transportation (HST) system). HST networks can be prioritized based on the determined mobility status of the communication device when performing a fallback communication and/or when returning from the fallback communication.

Abstract: Embodiments disclosed herein provide various aspects that would allow for Vehicle to Everything (V2X) or peer-to-peer (P2P) or sidelink (SL) communications. In an embodiment, a communication device may include: a memory for storing computer-readable instructions; and processing circuitry, configured to process the instructions stored in the memory to: obtain a first path loss between the communication device and a base station, wherein the communication device is coupled to the base station; calculate a second path loss based on one or more sidelink reference signal received power (S-RSRP) indicators received by the communication device, wherein the S-RSRP indicators are received from one or more communication devices within a communication range of the communication device; and determine a transmit (Tx) power of the communication device based on the first path loss and the second path loss.

Abstract: A user equipment comprises one or more antennas, a processor to communicate with an enhanced Node B (eNB) of an Internet Protocol (IP) based wireless communication network via the antenna; and a storage medium coupled to the processor. The storage medium having instructions stored thereon, that if executed by the processor, result in: collecting, at a first location, context information associated with a second location, wherein the user equipment is to roam from the first location to the second location; predicting the second location of the user equipment based on the context information; determining a set of one or more candidate frequency bands relating to the second location; and performing, at the second location, an initial cell scan based on the set of one or more candidate frequency bands to search for a frequency band that is supported by the user equipment, in response that the user equipment roams to the second location.

Abstract: A user equipment comprises one or more antennas, a processor to communicate with an enhanced Node B (eNB) of an Internet Protocol (IP) based wireless communication network via the antenna; and a storage medium coupled to the processor. The storage medium having instructions stored thereon, that if executed by the processor, result in: collecting, at a first location, context information associated with a second location, wherein the user equipment is to roam from the first location to the second location; predicting the second location of the user equipment based on the context information; determining a set of one or more candidate frequency bands relating to the second location; and performing, at the second location, an initial cell scan based on the set of one or more candidate frequency bands to search for a frequency band that is supported by the user equipment, in response that the user equipment roams to the second location.