Abstract:
The present application discloses a communication method and an apparatus. The method includes: obtaining, by a terminal device, information about an access technology corresponding to a first service; receiving, by the terminal device, information about an access technology and resource information corresponding to the access technology that are broadcast by a network device; determining, by the terminal device based on the obtained information about the access technology corresponding to the first service, and the information about the access technology and the resource information corresponding to the access technology that are broadcast by the network device, a first resource corresponding to the first service; and sending, by the terminal device, an access request to the network device by using the first resource.
Abstract:
A data transmission method and device, related to the communications field, are disclosed, so as to resolve a prior-art problem that a data decoding error occurs on user equipment because data packets sent by different coordinated network devices to the same user equipment on a same time-frequency resource are different resulting from a data packet loss. A specific solution is: receiving a scheduling grant message (201), where the scheduling grant message includes an identifier of a data packet and time-frequency resource information; and when it is determined, according to the identifier of the data packet, that the data packet is stored in a buffer, sending, according to the time-frequency resource information, the data packet to user equipment on a time-frequency resource indicated by the time-frequency resource information (203); or if the data packet is not stored in a buffer, skipping sending the data packet (204).
Abstract:
A data forwarding method and a controller are disclosed. The method includes: obtaining, by a controller, first identification information of a terminal, where the first identification information includes terminal capability information, service type information, and quality of service QoS information of the terminal (501); determining N functional modules in L network nodes from M network nodes according to the first identification information, where the N functional modules are configured to process a data stream that corresponds to a service of the terminal (502); and configuring, for the L network nodes, corresponding forwarding entries for forwarding the data stream, where the forwarding entries are used to enable the L network nodes to process the data stream by using the N functional modules (503).
Abstract:
Embodiments of this application provide a processing method for tracking a UE in a low power mode, and a device. The method includes: obtaining transmission configuration information between the UE and a network device, where the transmission configuration information indicates that an uplink tracking signal is to be sent according to a discontinuous transmission mode, and the transmission configuration information includes a transmission cycle. When the UE enters a low power mode, sending, an uplink tracking signal to the network device based on the transmission configuration information; and receiving TA adjustment information returned by the network device, where the TA adjustment information is obtained by the network device through detection of the uplink tracking signal.
Abstract:
Embodiments of the present invention provide a data transmission method, a forwarding information update method, a communications device, and a controller. The communications device includes: a forwarding module and one or more interfaces, where the forwarding module receives a data packet sent to a receive end; determines, according to a correspondence between data filtering template information of the data packet and interface information in forwarding information maintained by the forwarding module, an interface for forwarding the data packet to the receive end, where if data packet transmission is performed by using a specific radio access technology between the communications device and a next hop to which the communications device forwards the data packet, the interface is an interface corresponding to the radio access technology; and forwards the data packet to the interface; and the interface receives the data packet sent by the forwarding module, and forwards the data packet.
Abstract:
The embodiments of the present invention provide a method, apparatus, and system. The method comprises: sending, by a centralized processing node, control information containing address information of a service ERRU and the transmission mode of ERRUs to the ERRUs in a COMP set; receiving the compressed uplink COMP frequency domain data sent by the service ERRU according to the transmission mode, wherein the compressed uplink COMP frequency domain data are data obtained by the service ERRU by compressing the original uplink COMP frequency domain data sent by the non-service ERRUs and the original uplink COMP frequency domain data of the service ERRU, and receiving the original uplink COMP frequency domain data sent by at least one ERRU according to the transmission mode. In the present invention, the data are compressed to reduce the uplink transmission flow between the ERRUs in the COMP set and the centralized processing node.
Abstract:
The present patent application provides a method, an apparatus, and a system for generating a timestamp. The method includes: receiving, by a data packet processing unit, a data packet sent by a physical layer transceiver unit or an upper layer, and identifying whether the data packet is a precise time synchronization protocol PTP data packet, and if the data packet is a PTP data packet, generating, according to a physical layer delay provided by a physical layer delay acquiring unit and a non-physical layer delay provided by a non-physical layer delay acquiring unit, a precise timestamp and rewriting a timestamp field in the data packet.
Abstract:
A baseband processing apparatus in a radio communication system, a radio communication system, and a baseband processing method. The apparatus includes a first unit and a second unit that implement different baseband processing functions, where the second unit is configured to generate a precoding matrix of a downlink coordinated multipoint transmission and reception (CoMP) user, generate precoding control information according to the precoding matrix, and send the precoding control information to the first unit; and the first unit is configured to receive the precoding control information sent by the second unit, and perform downlink joint baseband processing on downlink CoMP user data in downlink user data according to the precoding control information, so as to generate jointly sent baseband data for radio sending. The technical solutions can reduce transmission bandwidth between baseband processing units and obtain a system capacity gain at the same time.