Abstract:
This application relates to the field of communication technologies and discloses a communication method and a communication apparatus, which are used to resolve a problem of a large activation delay of a secondary serving cell serving a terminal device in an existing technology. The method includes: A network device sends temporary SSB burst configuration information to a terminal device served by a secondary serving cell, where the temporary SSB burst configuration information includes a periodicity and/or an offset for sending a temporary SSB burst by the network device in the secondary serving cell configured for the terminal device. The network device sends a temporary SSB burst in the secondary serving cell based on the temporary SSB burst configuration information, where a temporary SSB included in the temporary SSB burst does not include a PBCH.
Abstract:
The present disclosure provides, for example, methods for measuring interference to a cable modem (CM), and corresponding example apparatuses and systems. One example method includes sending, by a cable modem termination system (CMTS), a broadcast message to all CMs connected to the CMTS, where the broadcast message includes information designating one of the CMs to send a probing signal by using a spectrum S in a timeslot T. The CMTS can then broadcast a pseudo random binary sequence (PRBS) by using the spectrum S in a downlink direction in the timeslot T, and can obtaining modulation error ratio (MER) information recorded in the timeslot T by other CMs. A difference between MER information in the timeslot T and MER information in a normal data timeslot can be used, for each of the other CMs, as intensity of interference to the corresponding CM.
Abstract:
A cable modem (CM), a hybrid fiber coaxial (HFC) network fault locating system, and a fault detection method are provided. The CM can not only detect intrusion noise outside a carrier and white noise, but also detect other fault problems, such as non-linear distortion, pulse noise, intrusion noise on a carrier, and linear distortion. The system includes a direction-selective apparatus. The apparatus can allow only an upstream signal entered from an output port of the apparatus to be transmitted to a CM to which a branch port of the apparatus is connected, without allowing an upstream signal entered from an input port of the apparatus to be transmitted to the CM to which the branch port of the apparatus is connected, so that once detecting a fault from the upstream signal, the CM can accurately determine, through locating, that the fault in an HFC network is located on an output port side of the apparatus.
Abstract:
This application discloses a pathloss reference signal determining method and a related apparatus, and relates to the field of communication technologies. The method includes: A terminal device receives activation information sent by a network device, where the activation information indicates that a first cell is activated, and the first cell is a cell having a data receiving capability of an uplink channel; and the terminal device determines a target reference signal as a pathloss reference signal, where the target reference signal includes a reference signal used to reflect a downlink pathloss status corresponding to the terminal device, and the pathloss reference signal is used to determine an uplink transmit power of the uplink channel. In this method, a downlink pathloss can be accurately calculated, to improve accuracy and efficiency of determining an uplink transmit power of an uplink channel, and eliminate an additional activation delay.
Abstract:
This application provides a communication method and apparatus One example method includes: receiving indication information from the network device and reporting a first message; and measuring a first measurement target based on the indication information and the first message. The indication information indicates to report measurement capability information in a first format, and the measurement capability information in the first format includes information about whether an interrupt is generated during measurement. The first message includes the measurement capability information of the terminal device, and the measurement capability information indicates whether a measurement gap is needed and whether the interrupt is generated when the first measurement target is measured.
Abstract:
The present invention discloses a data transmission method, apparatus, and system, which are used to reduce a delay of user uplink data and improve network performance in an HFC network. The method includes: determining, by a cable modem termination system physical layer CMTS PHY layer according to uplink resource assignment information configured by a cable modem termination system Media Access Control layer CMTS MAC layer separately for each cable modem CM of multiple CMs, a time slice that needs to be occupied when uplink data sent from a CM connected to the CMTS PHY layer, is forwarded to the CMTS MAC layer; and forwarding, by the CMTS PHY layer to the CMTS MAC layer on the determined time slice, the received uplink data that is sent, by using the uplink resource assignment information configured by the CMTS MAC layer, by the CM connected to the CMTS PHY layer.
Abstract:
Embodiments of the present disclosure provide a method for generating a route entry, including: receiving, by a first BGP speaker, a first route message and a second route message that are distributed respectively by a second BGP speaker by using a first distribution path and a second distribution path; determining, by the first BGP speaker, that a quantity of next hops in a first next hop list attribute is less than a quantity of next hops in a second next hop list attribute; and generating, by the first BGP speaker, a route entry according to path attributes, of a path towards a destination, in the first route message. In addition, the embodiments of the present disclosure further provide a first BGP speaker. The foregoing technical solution helps reduce a workload in configuring route preference policies.
Abstract:
This application provides a method for bit error rate detection, and a device. The method includes: sending, by a first device, a first notification packet to a second device, where the first notification packet is used to instruct the second device to perform bit error rate detection, the first device is an ingress node of a first LSP, and the second device is a downstream node; and receiving, a second notification packet, where the second notification packet carries a second bit error rate, the second bit error rate includes a first bit error rate of a first interface of the second device, and the first interface is an interface that receives an MPLS packet sent by the first device. By using the technical solutions of the present disclosure, the first device can perceive a bit error rate of the second device, thereby helping ensure reliability of MPLS packet transmission.