| CPC H04W 24/02 (2013.01) [H04W 24/10 (2013.01)] | 15 Claims |
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1. A data transmission method, comprising:
generating, by a terminal device, a report result, wherein the report result comprises at least one of a logged minimization of drive tests report, a radio link failure (RLF) report, and a random access channel (RACH) report, wherein the logged minimization of drive tests report comprises an identifier of a candidate access cell, information indicating whether the candidate access cell supports a network slice service initiated by the terminal device, location information of the terminal device where the terminal device receives a system message of the candidate access cell, and a network slice identifier corresponding to the network slice service initiated by the terminal device, wherein the candidate access cell is one of first N cells sorted in descending order of signal strength or signal quality in one or more cells measured by the terminal device, and N is a preset positive integer, the RLF report comprises an identifier of a cell in which a radio link failure occurs after the terminal device accesses the cell and the network slice identifier corresponding to the network slice service in which the radio link failure occurs on the terminal device, and the RACH report comprises an identifier of a cell accessed by the terminal device and the network slice identifier corresponding to the network slice service initiated by the terminal device;
sending, by the terminal device, the report result to a radio access network device to which a serving cell belongs; and
receiving, by the terminal device, updated network slice configuration information sent by the radio access network device, wherein the updated network slice configuration information is determined by the radio access network device, a network management device, or an access and mobility management function (AMF) network element based on the report result of at least one terminal device within a preset time period, wherein
the updated network slice configuration information comprises a network slice identifier list, the network slice identifier list comprises a network slice identifier corresponding to at least one network slice that can be supported by the radio access network device, and the network slice identifier list comprises the network slice identifier corresponding to the network slice service initiated by the terminal device in a cell controlled by the radio access network device; and
wherein the generating, by a terminal device, a report result comprises:
performing, by the terminal device, the following operations based on reference signal information of the candidate access cell:
obtaining, by the terminal device, a network slice identifier list of a first candidate access cell;
determining, by the terminal device based on the network slice identifier list of the first candidate access cell, whether the first candidate access cell supports the network slice service initiated by the terminal device; and
based on a determination that the first candidate access cell supports the network slice service initiated by the terminal device:
after determining that random access to the first candidate access cell succeeds, storing, by the terminal device, a RACH report corresponding to the first candidate access cell; or
after determining that random access to the first candidate access cell succeeds and the radio link failure occurs in a subsequent communication process, storing, by the terminal device, a RLF report corresponding to the first candidate access cell; or
after determining that random access to the first candidate access cell fails, obtaining, by the terminal device, a network slice identifier list of a second candidate access cell, and storing a logged minimization of drive tests report corresponding to the first candidate access cell.
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