A base station according to an embodiment of the present invention may determine multiple different RA-RNTIs, and transmit message 2 for a random access response on the basis that: the base station supports not only a random access procedure of a first type terminal having a first maximum terminal bandwidth, but also a random access procedure of a second type terminal having a second maximum terminal bandwidth smaller than the first maximum terminal bandwidth; message 1 including a PRACH preamble has been detected on a PRACH resource shared between the first type terminal and the second type terminal; and at least one of PRACH preamble sequences for the first type terminal is reused for the second type terminal.

The present technology relates to a communication device enabling to suppress deterioration of communication quality. Provided is a communication device that is a first communication device including one or more antennas, and the communication device includes a control unit configured to perform control of: generating first information on the basis of a reference signal transmitted from a second communication device including one or more antennas, the first information including information regarding an arrival time of the reference signal and information indicating that information regarding the arrival time is included, for each combination of the antennas included in the first communication device and the second communication device; and transmitting the generated first information to the second communication device. The present technology can be applied to, for example, a device constituting a wireless LAN system.

A communication apparatus receives a signal that is transmitted from a partner apparatus using a first communication scheme, and establishes, on the basis that the signal received includes information indicating that parameter exchange processing is to be executed, a connection with the partner apparatus using a second communication scheme, wherein the second communication scheme has a higher communication rate and consumes more power than the first communication scheme. In addition, the communication apparatus exchanges, by using the second communication scheme, information to be used in communication for the parameter exchange processing with the partner apparatus, and executes the parameter exchange processing using the information by using the second communication unit scheme.

A communication apparatus receives a signal that is transmitted from a partner apparatus using a first communication scheme, and establishes, on the basis that the signal received includes information indicating that parameter exchange processing is to be executed, a connection with the partner apparatus using a second communication scheme, wherein the second communication scheme has a higher communication rate and consumes more power than the first communication scheme. In addition, the communication apparatus exchanges, by using the second communication scheme, information to be used in communication for the parameter exchange processing with the partner apparatus, and executes the parameter exchange processing using the information by using the second communication unit scheme.

Provided are a method for reporting and controlling power, and a terminal, a base station and a communication system, which relate to the field of wireless communications. The method for reporting power comprises: a terminal determining whether transmitter switching is supported; the terminal determining whether the power class when one set of transmitters is utilized is the same as the power class when multiple sets of transmitters are utilized; and where the terminal supports transmitter switching and the power class when one set of transmitters is utilized is different from the power class when multiple sets of transmitters are utilized, the terminal reporting, to a base station, capability information of the terminal supporting multiple power classes, such that the base station controls the transmitting power of the terminal according to the capability information of the terminal supporting multiple power classes, thereby improving an uplink coverage range.

This application provides a frequency band control method in an abnormal scenario of a dual-card terminal and a terminal device, and relates to the field of communications technologies. In solutions of this application, for a dual-card user scenario that supports a 5G SA mode or a 5G NSA mode, it is determined whether a frequency band combination of two cards is in a blacklist and whether signal quality of a primary card and/or signal quality of a secondary card meet/meets a preset threshold. If the frequency band combination of the two cards is in the blacklist and the signal quality of the primary card and/or the signal quality of the secondary card are/is less than the preset threshold, an NR capability of a terminal device is controlled to fall back, for example, an SA capability is disabled, or an NR link in an ENDC link is released, to improve the signal quality of the two cards. Further, when the frequency band combination of the two cards changes and a changed frequency band combination of the two cards is not in the blacklist, the NR capability of the terminal device may be controlled to be restored. In the solutions of this application, a case in which signal quality deteriorates because the dual-card terminal device works on a problem frequency band combination can be alleviated.

A ranging capacity request method includes sending a first message, in which the first message includes request information, and the request information is configured to request for ranging capacity information of a second terminal that has received the request information. The second terminal may reply with a message including the ranging capacity information of the second terminal, for example, a ranging process used when performing a ranging service, an object ranged when performing a ranging service, or a ranging accuracy when performing a ranging service.

A ranging capacity request method includes sending a first message, in which the first message includes request information, and the request information is configured to request for ranging capacity information of a second terminal that has received the request information. The second terminal may reply with a message including the ranging capacity information of the second terminal, for example, a ranging process used when performing a ranging service, an object ranged when performing a ranging service, or a ranging accuracy when performing a ranging service.

This disclosure provides methods and apparatuses for association between communication devices. One method includes: sending, by a terminal device to a network device, a first message for establishment of an association relationship between the terminal device and a digital reflection (DR), wherein the first message comprises a first twin-globally unique temporary identity (TWIN-GUTI) of the terminal device, and wherein the first TWIN-GUTI comprises a first temporary identity (DRTI) of the DR and a globally unique identity (GUMEI) of first multi-access edge computing (MEC), and receiving, by the terminal device from the DR, a response message.

This disclosure provides methods and apparatuses for association between communication devices. One method includes: sending, by a terminal device to a network device, a first message for establishment of an association relationship between the terminal device and a digital reflection (DR), wherein the first message comprises a first twin-globally unique temporary identity (TWIN-GUTI) of the terminal device, and wherein the first TWIN-GUTI comprises a first temporary identity (DRTI) of the DR and a globally unique identity (GUMEI) of first multi-access edge computing (MEC), and receiving, by the terminal device from the DR, a response message.