Abstract: A path switching method includes: determining, by a base station, to switch a first terminal device from a first communication link to a second communication link, and sending, to the first terminal device by using a second terminal device, access information required by the first terminal device to access the base station, so that the first terminal device establishes the second communication link to the base station based on the access information. In the method, the second terminal device may release the first communication link before or after the second communication link is established, or may release the first communication link in a process of establishing the second communication link.

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 comprises: 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 terminal, includes a buffer status report table; at least another table for extended buffer status report; a receiver looks for an indication in a signaling received from a base station wherein the indication corresponds to a type of buffer status report table and selects a table from among the buffer status report table and the at least another table for extended buffer status report based on the indication corresponding to the type of buffer status report table, wherein the indication corresponding to the type of buffer status report table can be determined according to a type of the terminal; and an index sender sends the index to a base station an index obtained from the selected table according to an amount of data in a buffer of the terminal.

Abstract: An MAC control element (CE) uplink configuration method and device, and communications system, the method includes: when an MAC CE is activated, determining, by user equipment (UE), whether an uplink grant of a serving cell in an authorization frequency band exists; and when the uplink grant of the serving cell in the authorization frequency band exists and can accommodate the MAC CE, allocating, by the UE and for the MAC CE, the uplink grant of the serving cell in the authorization frequency band. An embodiment of the present disclosure improves reliability for transmitting the MAC CE, in an LAA system, and reduces unnecessary latency or failure.

Abstract: A random access method and apparatus for supporting multiple TTIs and a communications system. The random access method includes: transmitting a preamble for requesting random access by a UE to a base station via a first message; a TTI type of the UE is indicated by the first message; and receiving by the UE a random access response transmitted by the base station via a second message; different TTI types correspond to different random access responses. Hence, latency of a random access procedure of a UE having a short TTI may be greatly lowered.

Abstract: A method for maintaining a time advance timer, a base station and terminal equipment, the method includes: judging by a base station whether a band to be uplink adjusted includes only the band where a primary cell is located; and transmitting by the base station a time advance command to the band where the primary cell is located if the band where the primary cell is located is only included, such that the time advance timer to which the band where the primary cell is located corresponds is restarted. The advantages exist in that by processing time advance timers by the base station or the terminal, the time advance timer to which the band where the PCell is located corresponds expires at last, thereby preventing interruption of communications of the terminal due to advanced expiration of the time advance timer to which the band where the PCell is located corresponds.

Abstract: A light source device includes a case defining an accommodation space. The case includes a light transmissible surface and a locating-mounting hole. The locating-mounting hole defines a projection through space within the accommodation space in an axial direction of the locating-mounting hole. The light source device further includes a plurality of light emitting sources arranged within the accommodation space and surrounding the projection through space. The light emitting sources are configured for emitting light towards the light transmissible surface.

Abstract: Embodiments of the present invention disclose a method for controlling device-to-device discovery. The method includes: obtaining, by a network device, N first relay function parameter sets of N user equipment supporting a relay function; obtaining, by the network device, a second relay function parameter set of remote user equipment; determining, by the network device for the remote user equipment, at least one of the N user equipment supporting the relay function; and sending, by the network device, a first notification message to the at least one user equipment supporting the relay function, to trigger the at least one user equipment supporting the relay function to initiate a device-to-device discovery process.

Abstract: A control signaling processing method, a device, and a system relate to the field of communications technologies, to perform integrity protection on control signaling exchanged between a DU and UE in a CU-DU separated access network architecture. The method includes: determining, by a DU, integrity protection parameters and an integrity protection algorithm, where the integrity protection parameters and the integrity protection algorithm are used to perform integrity protection on a signaling radio bearer between the DU and UE; determining, by the DU, a message authentication code MAC-I based on the integrity protection parameters and the integrity protection algorithm; and receiving, by the DU, control signaling sent by an RRC layer of the DU, and sending, to the UE, the control signaling carrying the MAC-I.

Abstract: The present disclosure relates to data transmission methods, devices, and systems. One example method includes receiving, by a relay UE, data of a remote UE, where the data includes a first identifier of the remote UE, determining, by the relay UE, a second identifier of the remote UE based on the first identifier, and sending the data of the remote UE and the second identifier of the remote UE to a base station.

Abstract: A communication apparatus including: a controller configured to configure a plurality of SCells including a first SCell carrying a PUCCH and a second SCell different from first SCell; and a transmitter configured to transmit to a network side via a Physical Uplink Channel (PUCCH) a uplink control information (UCI) using the first SCell; wherein the controller configures a deactivation timer with respect SCell except for the first SCell among the plurality of SCells, and the controller configures the first SCell to be activated and deactivated by an activation/deactivation media access control (MAC) control element (CE).

Abstract: A method for predicting available bandwidth for a candidate flow on a link in a distributed network includes obtaining information about a plurality of flows carried by the link, the information including a current bandwidth consumption for each of the flows carried by the link; identifying whether each of the flows carried by the link has a local constraint or a remote constraint; and computing the available bandwidth for the candidate flow based at least in part on the information about the flows carried by the link and the identification of whether each of the flows carried by the link has a local constraint or a remote constraint. The predicted available bandwidth can be used to predict bandwidth consumption for active flows. The predicted available bandwidths can be used in selecting file block placement options.

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 deactivation method and apparatus for a secondary cell and a communications system. The deactivation method includes: restarting a deactivation timer associated with a first SCell carrying a PUCCH, in a case where a deactivation timer is restarted or a channel quality indicator report is transmitted in any second SCell in a secondary PUCCH cell group. Hence, a case will not occur where understanding of an activation state of a secondary cell by a UE and a base station is inconsistent due to an UE autonomous deactivation mechanism.

Abstract: Embodiments of this disclosure provide an information transmission method and apparatus and a system. The method is applicable to a terminal, the terminal being configured with a first type of resource pool for transmitting first type of information and a second type of resource pool for transmitting second type of information; wherein, the method includes: when the terminal is triggered to transmit information, it selects resources for transmitting the information from the configured first type of resource pool or second type of resource pool according to an attribute of the information; and transmits the information by using the selected resources. With the embodiments of this disclosure, it may be ensured that the terminal will not miss detecting a type of information due to a semi-duplexing problem, such as detecting resources for transmitting emergency information, thereby increasing utilization of resources, and improving reliability of V2V communications.

Abstract: A method for connection management by a user equipment includes transmitting a re-establishment request for a first connection of a first protocol layer in response to determining that a connection re-establishment condition is met, receiving a re-establishment response indicating if a re-establishment of the first connection of the first protocol layer is allowed, and completing the re-establishment of the first connection of the first protocol layer when the re-establishment of the first connection of the first protocol layer is allowed, wherein a context of a second protocol layer of the user equipment is unchanged.

Abstract: A method for paging a first device by a second device includes sending, by the second device, a page message on a first path connecting the second device to the first device, and receiving, by the second device from the first device, a page response in response to the page message on a second path connecting the first device to the second device, wherein the first path and the second path are intentionally selected to be different in at least one of a number of hops in each path, radio access technology, cell or frequency carrier comprising each path, or width of beam pairs forming each path.

Abstract: An apparatus for reporting connection setup request, includes a request transmitting unit configured to transmit a connection setup request for device-to-device communication to a network side when it is determined according to pre-obtained configuration information that the connection setup request for device-to-device communication can be transmitted to the network side.

Abstract: A method for operating a first distributed unit (DU) includes participating in a link layer context transfer with a second DU, establishing a user data path for a mobile device, the user data path connecting the mobile device with a centralized unit (CU) including a radio control protocol entity communicating with the mobile device, and storing first user data for the mobile device received from the CU and second user data for the mobile device received from the second DU. The method includes establishing a connection with the mobile device, sending the first user data and the second user data to the mobile device, and adapting the link layer context to operate in the first DU for exchanging data between the CU and the mobile device, wherein adapting the link layer context includes associating an uppermost protocol layer of the first DU with a lowest protocol layer of the CU.

Abstract: A method and apparatus for cell handover and reconfiguration includes: performing cell measurement and reporting a result of measurement by UE according to a cell measurement request; detaching, when the UE receives a handover command transmitted by a macro eNB or a serving eNB of the UE, from the serving eNB by the UE and reserving an uplink time adjustment parameter NTA of the serving eNB by the UE; and performing cell handover and reconfiguration by the UE according to the handover command. With the method and apparatus of the embodiments, When the UE is still in a state of being connected to the serving eNB, the target eNB begins to detect its uplink signal to determine uplink time advance of the UE and the target eNB, and the UE replaces the source serving eNB with a new target eNB according to indication of other cells.