A session management method and an apparatus are provided, so that a terminal device accesses a 4G network by using a 5G technology, to support native access of a 5G terminal device. The method includes: A mobility management device receives a mobility management message sent by a terminal device, where the mobility management message includes an N1 container, the N1 container includes a session management message, and the session management message is used to establish, update, or delete a packet data unit PDU session of the terminal device; the mobility management device changes the session management message into a bearer processing message, where the bearer processing message is used to establish, update, or delete a bearer of the terminal device; and the mobility management device sends the bearer processing message to a serving gateway.

Disclosed are a method and apparatus for session offloading, a device, and a storage medium. The method includes following steps: a primary base station determines a session aggregation maximum bit rate (AMBR) of an offloaded session at a secondary base station; and the primary base station sends the session AMBR at the secondary base station to the secondary base station.

Embodiments of this application provide an information processing method. The method includes: obtaining first dedicated channel DCH user quantities, first power, and first adaptive multi-rate AMR traffic volumes that respectively correspond to a plurality of phase groups; obtaining a target value corresponding to each of the plurality of phase groups through calculation based on the first DCH user quantities, the first power, and the first AMR traffic volumes that respectively correspond to the plurality of phase groups, where the target value is used to represent a system capacity; determining, based on the target value, the first phase group in the plurality of phase groups; and sending the first phase group to an access network device, where the first phase group is used by the access network device to adjust a phase of a transmission channel by using the first phase group in a current period.

Embodiments of the present disclosure relate to methods and apparatuses for duplication communication. According to an embodiment of the present disclosure, a method includes: receiving configuration information associated with duplication for data radio bearer (DRB) between a terminate node and a donor node; and in response to the duplication for data radio bearer being activated, transmitting a set of original packets and a set of duplicate packets in up link. Embodiments of the present disclosure solve issues about applying a DRB duplication mechanism in an integrated access and backhaul (IAB) system, which can improve and facilitate the implementation of the IAB system.

This application provides a communication method, a network device, and a terminal. The communication method includes: obtaining, by a first network device, a first AMBR of a PDU session, where the first AMBR is an AMBR of a flow that is served by a second network device in the PDU session, the first network device is a master node serving a terminal, and the second network device is a secondary node serving the terminal; sending, by the first network device, first information to the second network device, where the first information includes the first AMBR, so that the second network device provides, based on the first AMBR, the PDU session service for the terminal. The communication method, the network device, and the terminal provided in this application help ensure a session-level aggregate maximum rate requirement in a dual connectivity scenario.

Aspects of the present disclosure provide techniques for end-to-end rate adaptation using radio access network (RAN) assisted rate adaptation. Particularly, when a user equipment (UE) risks operating at rates greater than the guaranteed bit rates (GBR), the UE may rely on rate adaptation mechanisms to indicate when it has exceeded the supported bandwidth such that the UE may reduce its rate accordingly. Specifically, in some examples, a network device (e.g., call session control function (CSCF) and/or policy and charging rules function (PCRF)) may configure endpoints in an end-to-end communication to operate at rates that exceed GBR based on determining that all endpoints support RAN assisted rate adaptation capability. In other examples, the network device may configure maximum bit rates (MBR) that exceed GBR for only the endpoint that supports RAN assisted rate adaptation capability.

A data transmission method includes: obtaining a quantity of terminal devices and geographical location information of a terminal device, where the terminal device is a terminal device that receives target service data in a first transmission manner; and determining, based on the quantity of terminal devices and the geographical location information of the terminal device, to switch the first transmission manner to a second transmission manner, so that the target service data is sent to the terminal device in the second transmission manner.

A method for managing scheduling performance of bearers by a base station in a wireless network is provided. The method includes determining a configured packet delay budget (PDB) of non-guaranteed bit rate (NGBR) bearers and a configured PDB of guaranteed bit rate (GBR) bearers; monitoring a PDB of the NGBR bearers and a PDB of the GBR bearers during data communication; determining an average of quality-of-service class identifier (QCI) divergence of the NGBR bearers and an average of QCI divergence of the GBR bearers, wherein the QCI divergence of a bearer is a percentage variation between a monitored PDB and a configured PDB of the bearer; and controlling resource allocation parameters for minimizing the average of QCI divergence of the NGBR bearers and the average of QCI divergence of the GBR bearers.

Systems and methods of segregating a SDF of a PDU session are described. The UE transmits a NAS message to the network. The NAS message indicates the SDF, the desired QoS, and a segregation indication that requests that the network establish a separate QoS flow for the SDF even if an existing QoS flow is able to support the specific QoS. The SF decides whether or not to establish the separate QoS flow and updates filters in the UPF as well as providing a response to the UE containing a similar indication. The UE modifies resources related to the PDU session based on the response. The QoS is indicated as a 5QI and GBR or as a QFI of an existing QoS Flow on which the SDF is to be added if the separate QoS is not established. The QFI is in an unencrypted SDAP header of the NAS message.

Disclosed is technology for applying a more differential QoS, that is, service quality to each communication service by implementing a differential QoS control in a radio section more precisely without any increase in complexity and load compared to a conventional bearer based QoS control method.