Abstract:
The embodiments provide a resource allocation method and a communications apparatus. The method includes: a first node sends, to a radio access network device, first indication information used to indicate that the first node is a node responsible for terminal device management. The radio access network device allocates a first resource to the first node based on terminal devices that the first node is responsible for managing, and sends first resource information to indicate the first resource. In other words, the first node sends, to the radio access network device, the first indication information used to indicate that the first node is the node responsible for terminal device management, so that the radio access network device allocates different first resources based on different terminal devices that the first node is responsible for managing.
Abstract:
The technology of this application relates to a relay communication method. After receiving first information sent by a first terminal device, a first radio access network device may determine, based on the first information, a second terminal device that provides, in a target cell, a relay service for the first terminal device, where the first information is used to indicate that the first terminal device is a terminal device with limited uplink power. The first radio access network device sends second information to a second radio access network device, where the second information is used to indicate the second terminal device that provides, in the target cell, the relay service for the first terminal device.
Abstract:
Embodiments provide a notification method, an apparatus, and a communications system, and relate to the communications field, to ensure that a DU performs accurate L2 handling in a CU-DU architecture. The notification method includes: a CU sends a first message to the DU, where the first message includes an ID of a first DRB on which bearer type change occurs and first indication information indicating the DU to perform L2 handling; or the first message includes an ID of a first DRB and second indication information indicating that bearer type change occurs. The CU receives a second message sent by the DU, where the second message includes a cell group configuration of the L2 handling.
Abstract:
This application provides a transmission method for retrieving old context of a terminal device, the method includes: a first network node sends a first message to a first system, where the first message is received from a terminal device and includes CRNTI allocated previously by the first network node for the terminal device; the first system sends a second message to the first network node, the second message comprises identification information of the terminal device which is in association with old context information of the terminal device that is stored at the first network node, and is used by the first network node to retrieve the old context information of the terminal device.
Abstract:
The present application discloses a data transmission method, including: configuring, by a first network element, a Packet Data Convergence Protocol (PDCP) reordering time for a terminal; sending, by the first network element, the PDCP reordering time of the terminal to a second network element; sending, by the first network element, a PDCP data packet of the terminal to the second network element, where the PDCP reordering time of the terminal is used to determine a transmission priority of the PDCP data packet of the terminal on the second network element. According to embodiments of the present application, a data packet loss can be reduced.
Abstract:
The present disclosure discloses a data transmission method, device, and system, and belongs to the field of communications technologies. The method includes: receiving a data packet sent by user equipment, where the data packet carries indication information used to instruct a base station to establish a specified data connection to the user equipment; generating a first key of the user equipment based on the indication information and a public key of the base station; and performing data transmission with the user equipment based on the first key of the user equipment. According to the data transmission method, the transmitted data can be encrypted and decrypted when there is no radio resource control connection between the base station and the user equipment, thereby improving data transmission security while ensuring data transmission efficiency.
Abstract:
The present invention relates to the field of mobile communications technologies, and in particular, to a resource allocation method, a service transmission method, and an apparatus, so as to resolve a technical problem of how to coordinately transmit, in a WLAN, a WLAN service and a to-be-offloaded service of a cellular network node. In embodiments of the present invention, resources separately allocated to an AP and the cellular network node are specified, and the AP and the cellular network node are separately notified of an allocation result. In this way, both the AP and the cellular network node transmit data on only the respective allocated WLAN resources, so as to avoid that the WLAN service and the to-be-offloaded service of the cellular network node contend for a channel.
Abstract:
The application discloses a method implemented by a first base station, including: obtaining, first receive power information, where the first receive power information is receive power information of receiving a signal transmitted by user equipment served by a second base station; determining, according to the first receive power information, a relationship between the user equipment and a coverage area of the first base station; and notifying the second base station of the relationship. Thus, when user equipment approaches a network covered by a first base station, a second base station may know a relationship between the user equipment and the coverage area of the first base station, so as to perform a network handover for the user equipment or establish a wireless connection between the user equipment and the first base station. The embodiments of the present invention further provide a corresponding base station.
Abstract:
The present application discloses a wireless local area network access point search method, an apparatus, and a system, relates to the field of communications technologies, and can reduce power consumption for passive scanning. According to the method, beacon sending information of a wireless local area network access point and measurement information of a user equipment are matched, so that the user equipment can search for the wireless local area network access point only at the time when and a frequency channel number at which the wireless local area network access point sends a beacon. Compared with the prior art in which a user equipment needs to continuously keep a state of searching for a wireless local area network access point, the present application greatly shortens time spent by the user equipment in listening to a beacon, and therefore reduces power consumption of passive scanning.
Abstract:
Embodiments of the present application provide an uplink coordinated multipoint transmission (CoMP) set selecting method and system, and a device, which relate to the communications field, so that an uplink CoMP set of a cell or of user equipment (UE) served by a cell can be determined by means of exchange, between base stations, of at least channel state information-reference signal (CSI-RS) configuration information used for distinguishing cells. Technical solutions provided by the embodiments of the present application can implement sharing of control information and data information among multiple cells in a wireless communications system.