A mobile communication system includes a control device and a base station device. Data communication between the control device and the base station device is conducted using a fixed-length data size and a variable-length data size. The control device transmits information indicating whether a data size of the data communication has a fixed length or a variable length. The base station device receives the information from the control device.

A first distant apparatus performs communication of streaming data and other data for which a change in data transfer rate is required to be suppressed, and a second distant apparatus performs communication of phone book data and other data for which a change in data transfer rate is permitted. When communication with the first distant apparatus and communication with the second distant apparatus are concurrently performed, a first communication unit is selected for communication with the first distant apparatus and a second communication unit, which is faster than the first communication unit, is selected for communication with the second distant apparatus. Thus, it is possible to make a collision in communication less likely to occur, and to maintain the communication quality of the first type of data.

A first distant apparatus performs communication of streaming data and other data for which a change in data transfer rate is required to be suppressed, and a second distant apparatus performs communication of phone book data and other data for which a change in data transfer rate is permitted. When communication with the first distant apparatus and communication with the second distant apparatus are concurrently performed, a first communication unit is selected for communication with the first distant apparatus and a second communication unit, which is faster than the first communication unit, is selected for communication with the second distant apparatus. Thus, it is possible to make a collision in communication less likely to occur, and to maintain the communication quality of the first type of data.

Allocating a physical radio resource for a non-guaranteed bit rate (non-GBR) bearer in a distributed communications system (DCS) is disclosed. More specifically, the method enables a radio circuit in a network node to divide the physical radio resource among a number of non-GBR quality-of-service (QoS) class identifiers (QCIs) based on a number of predetermined scheduling ratios, respectively. The radio circuit can be configured to dynamically rebalance physical radio resource allocation among the non-GBR QCIs such that the network node can maintain the predetermined scheduling ratios or respond to a reconfiguration of the predetermined scheduling ratios among the non-GBR QCIs. As a result, a network operator(s) can dynamically adjust physical radio resource allocation among the non-GBR QCIs based on, for example, subscribers' network usage and plan limits, thus making it possible for the network operator(s) to customize QoS configuration to enable differentiated non-GBR services.

Allocating a physical radio resource for a non-guaranteed bit rate (non-GBR) bearer in a distributed communications system (DCS) is disclosed. More specifically, the method enables a radio circuit in a network node to divide the physical radio resource among a number of non-GBR quality-of-service (QoS) class identifiers (QCIs) based on a number of predetermined scheduling ratios, respectively. The radio circuit can be configured to dynamically rebalance physical radio resource allocation among the non-GBR QCIs such that the network node can maintain the predetermined scheduling ratios or respond to a reconfiguration of the predetermined scheduling ratios among the non-GBR QCIs. As a result, a network operator(s) can dynamically adjust physical radio resource allocation among the non-GBR QCIs based on, for example, subscribers' network usage and plan limits, thus making it possible for the network operator(s) to customize QoS configuration to enable differentiated non-GBR services.

There is provided a method at a first network node, comprising: receiving, from a second network node, a message comprising a requested quality of service (QoS) profile and one or more alternative QoS profiles, wherein the QoS profiles are associated with a communication with a user equipment; determining that the requested QoS profile cannot be provided by the first network node for a communication between the first network node and the user equipment; determining that at least one of the one or more alternative QoS profiles can be provided by the first network node for a communication between the first network node and the user equipment; transmitting, to the second network node, an indication that an alternative QoS profile can be provided by the first network node; and, transmitting, to the second network node, an indication for configuring the user equipment based on the requested QoS profile.

There is provided a method at a first network node, comprising: receiving, from a second network node, a message comprising a requested quality of service (QoS) profile and one or more alternative QoS profiles, wherein the QoS profiles are associated with a communication with a user equipment; determining that the requested QoS profile cannot be provided by the first network node for a communication between the first network node and the user equipment; determining that at least one of the one or more alternative QoS profiles can be provided by the first network node for a communication between the first network node and the user equipment; transmitting, to the second network node, an indication that an alternative QoS profile can be provided by the first network node; and, transmitting, to the second network node, an indication for configuring the user equipment based on the requested QoS profile.

This application provides a method and an apparatus for determining an air interface latency and relates to the field of communications technologies. In the method, an access network device obtains an air interface latency of a downlink data packet and schedules the downlink data packet based on the air interface latency of the downlink data packet. The air interface latency of the downlink data packet is calculated based on a round-trip latency, and the round-trip latency is a latency from when a terminal sends an uplink data packet to when the terminal receives the downlink data packet corresponding to the uplink data packet. In the method, the access network device may schedule the downlink data packet based on the air interface latency of the downlink data packet, so as to precisely control a latency in uplink and downlink data transmission.

This application provides a method and an apparatus for determining an air interface latency and relates to the field of communications technologies. In the method, an access network device obtains an air interface latency of a downlink data packet and schedules the downlink data packet based on the air interface latency of the downlink data packet. The air interface latency of the downlink data packet is calculated based on a round-trip latency, and the round-trip latency is a latency from when a terminal sends an uplink data packet to when the terminal receives the downlink data packet corresponding to the uplink data packet. In the method, the access network device may schedule the downlink data packet based on the air interface latency of the downlink data packet, so as to precisely control a latency in uplink and downlink data transmission.

This application discloses an SN synchronization method and apparatus for multicast broadcast service, a device, and a readable storage medium. The method includes: obtaining a first radio interface SN of a first multicast broadcast service received in a first cell and a second radio interface SN of the first multicast broadcast service received in a second cell; and sorting data packets of the first multicast broadcast service according to the first radio interface SN and the second radio interface SN; where the first radio interface SN and the second radio interface SN are in a same SN set, and the first radio interface SN and the second radio interface SN are at least partially different.