Abstract: A user equipment (UE) includes: a memory configured to store a plurality of instructions; and a processor coupled to the memory and configured to execute the plurality of instructions to: calculate a first paging group index of the UE by using the following formula: Paging_GroupID=floor(UE_ID/nB); where, Paging_GroupID is the first paging group index, UE_ID based on an identity of the UE, nB is a parameter associate with paging occasions and floor denotes a rounded down operation.

Abstract: The method is applied to a communications system including a first network device, a second network device, and a terminal device. The terminal device is communicatively connected to the first network device and the second network device respectively. The method includes: sending, by a network device, a first message to the terminal device, where the first message is used to determine that the terminal device stops communication with the first network device, or the first message is used to determine that the terminal device releases a protocol stack and a data radio bearer that are corresponding to the first network device; and the network device is the first network device or the second network device. Therefore, power consumption of the terminal device or the first network device and waste of air interface resources can be reduced, and flexibility can effectively be improved in a communication process.

Abstract: This application discloses a path switching method that includes: sending, by a first terminal, a first message to a first network device, where the first message is used to request to switch a second terminal from an indirect connection path for communicating with the first network device by using the first terminal to a direct connection path for communicating with the first network device or a second network device, or the first message is used to request to release a link between the first terminal and the second terminal, and the first network device is different from the second network device; and releasing, by the first terminal, the link between the first terminal and the second terminal. With this solution, a relay terminal can trigger switching of a remote terminal from an indirect connection path to a direct connection path, to adapt to a relay scenario more flexibly.

Abstract: A data link quality-based offloading method in dual connectivity includes determining a quality of a bearer link on a user equipment UE side by determining and setting, determining a quality of a radio link by parameters or conditions such as timing advance (TA) timeout, a bit error rate, a signal strength or a signal amplitude, a threshold of continuous scheduling request (SR) sending, a radio link control (RLC) sliding window, a T310 timer, and a triggering of a beam failure recovery process, selecting, based on a determining result, a manner such as a packet replication or selecting a link, and transmitting data through two links.

Abstract: This application provides a method and apparatus for controlling traffic steering and a communications system. In an implementation of the method for controlling traffic steering, the method is applicable to an RAN node and includes: traffic steering indication information is determined; and the traffic steering indication information is transmitted to UE, so that the UE steers corresponding traffic to a traffic steering target according to the traffic steering indication information. With the method, load balance between 3GPP RAN and WLAN at an RAN level may be ensured, and in comparison with an existing mechanism, user experiences and system performance are improved.

Abstract: A processing apparatus and method for network indication and a communications system in a procedure of RC-IWK. The processing method includes: a base station determines whether UE context release indication contains information on a cause of release indicating that a traffic of a UE is steered from the LTE to the WLAN, when the UE context release indication transmitted by an MME; and initiates a connection reconfiguration procedure to the UE so that the UE is kept in a connected state, in a case where the UE context release indication contains the information on the cause of release indicating that the traffic of the UE is steered from the LTE to the WLAN. Hence, a case, for example, where the UE not expecting to use the LTE is steered to the LTE system again, will not occur.

Abstract: A data transmission method and related devices. The method includes: handing over a first terminal device from a second terminal device to a network device; receiving, by the first terminal device, a first packet data convergence protocol (PDCP) data packet sent by the network device; and if the first PDCP data packet is a target PDCP data packet, submitting, by the first terminal device, a second PDCP data packet, where the target PDCP data packet is a PDCP data packet sent by the network device based on a transmission status report, and the transmission status report is a status report sent by the first terminal device or the second terminal device to the network device.

Abstract: A terminal is capable dual connectivity with a base station, the terminal including: a processor configured to perform a process that change, release, or deactivate a bearer among Secondary Cell Group, and to trigger transmission of a Packet Data Convergence Protocol (PDCP) status report according to the process; and, a transmitter configured to transmit the PDCP status report.

Abstract: A method and an apparatus for configuring transmission time interval (TTI), including a processor configured to execute instructions to: transmit to a user equipment (UE) configuration information about data radio bearers (DRBs), the configuration information about DRBs indicating TTI length to which each DRB configured by the eNB for the UE is applicable, wherein the DRBs are configured by radio resource control (RRC), and notify a target eNB of the TTI length to which each DRB of the UE is applicable when the UE needs to be handed over.

Abstract: A communication path switching method includes: sending, by first user equipment, a first message to a first network device, where the first message is used to request to switch a communication path of the first user equipment from a direct path to an indirect path; receiving, by the first user equipment, a second message sent by the first network device, where the second message carries at least one of first bearer configuration information and first indication information that is used to instruct the first user equipment to perform the communication path switching; and performing, by the first user equipment, the communication path switching based on the first indication information.

Abstract: A control information sending method, a control information receiving method, and a device, where a first device sends first control information to a second device on a first resource such that second device prepares data information based on the first control information and waits for sending the data information. The first device sends second control information on a second resource different from the first resource such that the second device sends the data information based on the second control information. The first resource is different from the second resource such that a duration of preparing the data information by the second device is greatly greater than an interval between control information and uplink data in one time interval, and the second device has sufficient time to prepare the data information.

Abstract: A processing apparatus and method for network indication and a communications system in a procedure of RC-IWK. The processing method includes: a base station determines whether UE context release indication contains information on a cause of release indicating that a traffic of a UE is steered from the LTE to the WLAN, when the UE context release indication transmitted by an MME; and initiates a connection reconfiguration procedure to the UE so that the UE is kept in a connected state, in a case where the UE context release indication contains the information on the cause of release indicating that the traffic of the UE is steered from the LTE to the WLAN. Hence, a case, for example, where the UE not expecting to use the LTE is steered to the LTE system again, will not occur.

Abstract: A method for adjusting power of a terminal includes monitoring, by the terminal, usage of an uplink carrier, where the carrier usage includes at least one of a quantity of carriers, duration of continuous use of one or more carriers, and a temperature of the terminal. The method further includes adding, by the terminal, a power back-off value during calculation of power headroom when the terminal detects that the carrier usage satisfies a preset condition, to reduce a value of power headroom of the one or more carriers. The method further includes reporting, by the terminal, the value of the power headroom to a network device.

Abstract: A relay selection method and apparatus and a system. The method includes: relay equipment broadcasts relay discovery information, the relay discovery information including identifier information (a relay UE ID) of the relay equipment and identifier information (a cell ID) of a serving cell of the relay equipment, so that remote terminal receiving the relay discovery information selects relay equipment according to the relay discovery information or transmits relay information of discovered relay equipment to an eNB, thus the eNB may select relay equipment for the remote terminal. With certain embodiments, the serving cell may learn a cell where a relay to which the terminal accesses is located, so as to perform configuration for the terminal or perform path switching of downlink data.

Abstract: A method for operating a user equipment (UE) includes receiving, by the UE from a network, a mobile subscriber identifier for the UE, the mobile subscriber identifier being exclusively assigned to the UE within a wireless tracking area of the network, and transmitting, by the UE to a relay node, an initial message of an access procedure for accessing a user data service of the network, wherein the initial message comprises a request to connect to a control node of the network, and wherein the initial message includes the mobile subscriber identifier, and an indication to relay the initial message over a first signaling radio bearer (SRB) to the control node.

Abstract: An apparatus and method to select a resource for performing device to device (D2D) communication from a resource pool configured in a second mode by a first eNB.

Abstract: A communication system including a first base station, a second base station and user equipment (UE). The first base station including: a transmitter to transmit to the second base station a first signal comprising information about device-to-device (D2D) communication of the UE, a receiver to receive from the second base station a second signal including a configuration information, that includes information on a resource pool configured in a second mode by the second base station, or a resource location of a resource allocated in the first mode by the second base station; and a transmitter to transmit to the UE a Radio Resource Control (RRC) Message including the configuration information after receiving the second signal; the second base station to receive from the first base station the first signal to transmit the second signal; and a receiver configured to receive from the UE a third signal for wireless connection.

Abstract: A resource request method and system, and a device are provided, and relate to the field of communications technologies. The method may include: triggering, by remote UE, a buffer status report BSR, and sending the BSR to relay UE, where the BSR is used to provide a base station with a size of available to-be-transmitted data in a buffer of the remote UE.

Abstract: A random access method including receiving, by a user equipment, a radio resource control (RRC) connection reconfiguration message from a first network device, where the RRC connection reconfiguration message is included in a first message sent by a second network device to the first network device, and where the RRC connection reconfiguration message indicates a primary serving cell of the second network device for the user equipment, and further indicates an active bandwidth part (BWP) in the primary serving cell, and the method further including initiating, by the user equipment, a random access procedure on the active BWP.

Abstract: When a PDCP entity over a UM DRB is re-established, or when a cell handover occurs and a PDCP entity over a UM DRB uses a key used before the handover, the PDCP entity determines a first SDU, where the first SDU is an SDU that is associated with a sequence number by the PDCP entity but whose corresponding data has not been transmitted through an air interface; and delivers a PDU corresponding to the first SDU to an RLC entity.