Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive data from both a source base station and a target base station during handover. For example, the UE may refrain from resetting or reestablishing media access control (MAC) and packet data convergence protocol (PDCP) layer configurations until after a successful access procedure is performed with the target base station. In some cases, a single radio link control (RLC)/PDCP stack may be used during handover procedures. A source base station may, for example, forward data to a target base station after receiving a handover execution message. A UE may identify and resolve any duplicate data sent by both base stations during the transition. Additional signaling may be used (e.g., during the radio resource control (RRC) configuration) to indicate that a UE supports dual link handover.

In some implementations, a request to switch to using a second network connection is received at a first computing device that is currently communicating with a second computing device over a first network connection. While still using the first network connection, the second network connection may be initiated. During a period of transition, the first computing device may communicate with the second computing device using both the first network connection and the second network connection. To use both the first and second network connections, data from the second computing device may be received over the first network connection, and data may be sent to the second computing device over the second network connection. The first computing device may identify an end of the period of transition. In response, the first computing device may communicate with the second computing device using only the second network connection.

The disclosure relates to a communication method and system for converging a 5.sup.th-Generation (5G) communication system for supporting higher data rates beyond a 4.sup.th-Generation (4G) system with a technology for Internet of Things (IoT). The disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The disclosure provides a method and an apparatus for operating a PDCP entity during a handover having no transmission/reception interruption.

The present disclosure relates to a communication method and system for converging a 5.sup.th-Generation (5G) communication system for supporting higher data rates beyond a 4.sup.th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. According to the disclosure, it is possible to efficiently support data forwarding during conditional handover and dual stack protocol handover.

A method and user equipment are provided. The method includes receiving a scheduling of an uplink (UL) signal on a target cell that collides with a UL signal on a source cell; determining a time duration from an ending symbol of a physical downlink control channel (PDCCH) scheduling the UL signal on the target cell; determining that a first symbol of the UL signal on the source cell is after the time duration from the ending symbol of the PDCCH; and dropping at least a portion of the UL signal on the source cell in response to determining that the first symbol of the UL signal on the source cell is after the time duration from the ending symbol of the PDCCH.

A method and a device for determining an MRO critical scenario and an apparatus are provided. The method includes: obtaining, by the UE, parameter information about a connection problem in the case that the connection problem has been detected by the UE in a cell handover process and cell handover has been performed successfully, or in the case that the connection problem has been detected by the UE within a predetermined time period after the cell handover is performed successfully; and transmitting, by the UE, the parameter information to a network device, so that the network device may determine the MRO critical scenario in accordance with the parameter information. According to the embodiments of the present disclosure, it is able to determine the MRO critical scenario in a scenario where cell handover is performed successfully.

This application provides a communication method, a network device, and a terminal. The communication method includes: determining, by a first network device, at least one candidate target cell and first configuration information, where the first configuration information is used to trigger a terminal to determine one of the at least one candidate target cell as a to-be-handed-over-to cell; and sending, by the first network device, a first message to the terminal, where the first message includes first cell indication information and the first configuration information, and the first cell indication information is used to indicate the at least one candidate target cell.

A report processing method, a report processing device, a network node and a UE are provided. The report processing method includes: obtaining RLF reports and successful handover reports; determining the RLF report and the successful handover report that have an association relationship; and analyzing a cause for an RLF or a cause for a handover failure in accordance with the determined RLF report and successful handover report that have the association relationship.

A network access method, a relevant device and a system are provided. The network access method includes: storing, by a UE, identifier information of a network node that the UE accesses via a first RAN; and transmitting, by the UE, a connection establishment request comprising the identifier information of the network node to a second RAN while the UE maintains the connection to the first RAN, to enable the second RAN to select the network node for the UE as a network node that the UE accesses via the second RAN.

A method and system for wireless network bilateral accelerated transmission are provided. The method comprises constructing, by a client and a server, a bilateral accelerated transmission protocol based on a user datagram protocol; and performing, by the client and the server, data transmission based on the bilateral accelerated transmission protocol.