CPC H04W 28/0205 (2013.01) [H04W 28/0231 (2013.01); H04W 28/22 (2013.01)] | 16 Claims |
1. A signal transmission method, comprising:
sending, by a core network device, to a first access network device, a packet data unit (PDU) session resource setup request to establish a PDU session for a terminal device, wherein the PDU session comprises a first quality of service (QoS) flow, wherein the core network device comprises an access and mobility management function (AMF), wherein the first access network device is a new radio (NR) base station, wherein the PDU session resource setup request comprises an identifier of the first QoS flow, a first QoS parameter and a second QoS parameter, wherein an air interface rate required by the first QoS parameter is less than an air interface rate required by the second QoS parameter, wherein the first QoS parameter comprises a first guaranteed bit rate (GBR) and the second QoS parameter comprises a second GBR, and wherein the first QoS parameter and the second QoS parameter are both possible QoS parameters to be used for the first QoS flow; and
receiving, by the core network device, a PDU session resource setup response from the first access network device, wherein the PDU session resource setup response comprises the identifier of the first QoS flow and a first indication indicating a QoS parameter selected by the first access network device from the first QoS parameter and the second QoS parameter for the first QoS flow based on an air interface rate supported by the first access network device.
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