Abstract: The method provided in this embodiment improves the capabilities of automatic driving and ADAS of electric vehicles. The method can be applied to vehicle networking, such as V2X, LTE-V, V2X, etc. The method includes receiving, from the mobile device, an indication of a requirement for transmission resources, comprising at least an indication that the resources are required with a periodicity, transmitting, to the mobile device, an assignment of a first scheduling configuration for the device-to-device connection, transmitting, to the mobile device, an indication to begin use of periodically recurring radio resources, and handing over responsibility for providing radio resources for the device-to-device connection from the network node to a target network node such that the availability of radio resources with the periodicity is substantially maintained.

Abstract: A registration method, a session establishment method, a terminal, and an access and mobility management function (AMF) entity, where the method includes sending, by a terminal, a first message to the AMF entity, where the first message includes first information, first network slice selection information, and second network slice selection information, the first information includes information for requesting to establish a protocol data unit (PDU) session, the first network slice selection information is used by the AMF entity to select a first session management control function (SMF) entity, and the second network slice selection information is used by the AMF entity to select a second SMF entity, and receiving, by the terminal, a second message from the AMF entity, where the second message includes second information, and the second information includes PDU session establishment accept information.

Abstract: A ProSe information transmission method for a second terminal discovering a first terminal in a roaming state. The method includes: a first ProSe entity receives a first message sent by a first terminal, where the first message carries a ProSe application identity APP ID; sends a second message carrying the ProSe APP ID to a second ProSe entity; receives a third message carrying a first identity sent by the second ProSe entity, the first identity is a codeword or mask allocated to the ProSe APP ID by the second ProSe entity, and the first identity includes a PLMN ID of the VPLMN; generates a second identity according to the first identity, where the second identity includes the first identity and a PLMN ID of an HPLMN of the first terminal; and sends a fourth message to the first terminal, where the fourth message carries the second identity.

Abstract: The present disclosure discloses a user discovery method, user equipment, and a proximity service function entity, and pertains to the field of mobile communications technologies. The method includes: receiving a first message sent by monitoring UE; sending a second message to monitored UE; receiving a third message sent by the monitored UE; allocating a broadcast code word to the monitored UE; and sending a fourth message to the monitoring UE.

Abstract: A data transmission method and a device where during downlink data transmission, a network side device generates second information based on first information and a second identifier and sends the second information to a second device, and in the sending process, the second information passes through a first device. In the process, the second information is generated by the network side device based on the first information and the second identifier of the second device. Therefore, when the second information reaches the first device, the first device can identify the second device as a destination of the second information. Network quality of service different from that of the first device is provided to the second device by distinguishing data of the first device and data of the second device.

Abstract: A data transmission method and a device, where the method includes receiving, by a user equipment (UE), a first message from a core network device using a first base station, where the first message includes information related to a second base station, performing, by the UE, transmission of a non-access stratum (NAS) message with the core network device using the first base station, and performing data transmission using the second base station based on the information related to the second base station, where the NAS message is transmitted only using the first base station.

Abstract: A method for paging a user equipment (UE) includes receiving a generic page indication for the UE, the generic page indication including a list of radio access networks (RANs), selecting a subset of the list of RANs, sending a RAN-specific page indication for each RAN in the subset of the list of RANs, receiving a first RAN-specific page response associated with the UE, and sending a generic page response corresponding to the first RAN-specific page response.

Abstract: A method for paging a user equipment (UE) includes receiving a generic page indication for the UE, the generic page indication including a list of radio access networks (RANs), selecting a subset of the list of RANs, sending a RAN-specific page indication for each RAN in the subset of the list of RANs, receiving a first RAN-specific page response associated with the UE, and sending a generic page response corresponding to the first RAN-specific page response.

Abstract: A data communication method, where a first device receives a request message from at least one second device, where the request message requests the first device to forward group data, and the request message carries a group identifier. The first device returns a response message to the at least one second device, where the response message carries a layer-2 address and an Internet Protocol (IP) address corresponding to the group identifier, and the first device sends the group data using the layer-2 address when receiving the group data sent by a third device to the IP address.

Abstract: In one embodiment, a method for wireless network selection includes obtaining, by a user equipment (UE) from a visitor access network discovery and selection function (V-ANDSF) server, a visitor policy and creating a wireless local area network (WLAN) priority list in accordance with the visitor policy, a home policy, and a priority indicator. The method also includes selecting a WLAN from the priority list as a selected network.

Abstract: The present disclosure describes methods, devices, and systems for signal strength measurement. An example method includes: broadcasting, by a first relay device, a first message, wherein the first message is used by a first remote device to discover the first relay device; establishing, by the first relay device, a connection to the first remote device; and sending, by the first relay device, a second message, wherein the second message is used by the first remote device to measure signal strength of a link between the first remote device and the first relay device.

Abstract: An inter-user equipment discovery method, apparatus and system are disclosed. In an embodiment, the method includes sending, by first user equipment, a discovery request message to a first proximity-based service entity, wherein the discovery request message comprises initial location information of the first user equipment and receiving a discovery response message sent by the first proximity-based service entity, wherein the discovery response message comprises a first code word of the first user equipment. The method further include generating a discovery message according to location offset information and the first code word, wherein the location offset information is an offset between a current location and an initial location of the first user equipment and broadcasting the discovery message, wherein the discovery message is used by a second user equipment to determine a location of the first user equipment.

Abstract: In one embodiment, a method for wireless network selection includes obtaining, by a user equipment (UE) from a visitor access network discovery and selection function (V-ANDSF) server, a visitor policy and creating a wireless local area network (WLAN) priority list in accordance with the visitor policy, a home policy, and a priority indicator. The method also includes selecting a WLAN from the priority list as a selected network.

Abstract: Embodiments of the present invention provide a communication method and a device, and relate to the communications field, to implement communication between a relay terminal and a remote terminal of a different communication group. The method includes: receiving, by a first terminal, a first message sent by a second terminal; when it is determined that the second terminal selects the first terminal as a relay terminal, acquiring group information corresponding to a communication group; and communicating with the second terminal according to the group information. The method embodiment is used to implement communication.

Abstract: A method for operating a transmitting device includes receiving a first packet data convergence protocol (PDCP) protocol data unit (PDU) associated with a first remote device (RD), the first PDCP PDU including at least a first PDCP header, generating a first nested PDCP PDU in accordance with the first PDCP PDU, the first nested PDCP PDU including a second PDCP header and the first PDCP PDU, the second PDCP header comprising a first PDU type indicator indicating that the first nested PDCP PDU includes a first relayed PDCP PDU and a first identifier associated with the first RD, and sending the first nested PDCP PDU on a radio bearer.

Abstract: Embodiments provide a data transmission method. The method includes: receiving, by a core network entity, a first message sent by a first user equipment (UE); and setting up, by the core network entity, a target bearer on the first UE according to the first message, so that a second UE transmits data using the target bearer.

Abstract: A data communication method, where a first device receives a request message from at least one second device, where the request message requests the first device to forward group data, and the request message carries a group identifier. The first device returns a response message to the at least one second device, where the response message carries a layer-2 address and an Internet Protocol (IP) address corresponding to the group identifier, and the first device sends the group data using the layer-2 address when receiving the group data sent by a third device to the IP address.

Abstract: A method, operable at a network node of a wireless network, schedules radio resource usage for a mobile device to transmit on a device-to-device connection. The method includes receiving, from the mobile device, an indication of a requirement for transmission resources, comprising at least an indication that the resources are required with a periodicity, transmitting, to the mobile device, an assignment of a first scheduling configuration for the device-to-device connection, comprising at least an indication of periodically recurring radio resources to be used for a plurality of instances of a message transmission on the device-to-device connection, transmitting, to the mobile device, an indication to begin use of the periodically recurring radio resources, and handing over responsibility for providing radio resources for the device-to-device connection from the network node to a target network node such that the availability of radio resources with the periodicity is substantially maintained.

Abstract: The present invention provides a data transmission method, a device, and a system. The method includes: receiving, by a relay device, first downlink data sent by a gateway; obtaining a first service identifier of the first downlink data; obtaining, according to a first mapping relationship between a service identifier and per packet priority PPP information, first PPP information corresponding to the first service identifier; and forwarding, by the relay device, the first downlink data to a remote device according to the first PPP information. PPP information of a downlink data packet can be accurately and quickly obtained, and a rate and accuracy of downlink data transmission are improved.

Abstract: A method, operable at a network node of a wireless network, schedules radio resource usage for a mobile device to transmit on a device-to-device connection. The method includes receiving, from the mobile device, an indication of a requirement for transmission resources, comprising at least an indication that the resources are required with a periodicity, transmitting, to the mobile device, an assignment of a first scheduling configuration for the device-to-device connection, comprising at least an indication of periodically recurring radio resources to be used for a plurality of instances of a message transmission on the device-to-device connection, transmitting, to the mobile device, an indication to begin use of the periodically recurring radio resources, and handing over responsibility for providing radio resources for the device-to-device connection from the network node to a target network node such that the availability of radio resources with the periodicity is substantially maintained.