| CPC G01S 5/0284 (2013.01) [H04W 28/0215 (2013.01)] | 18 Claims |

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1. An apparatus, comprising:
a transceiver, configured to:
send at least one piece of relative position information to a network side device, wherein each piece of relative position information is information about a relative position between any two tags of a plurality of tags supported by the apparatus, wherein the plurality of tags comprises a first tag, and the first tag comprises a plurality of ports,
receive a reference signal sent by the network side device after sending the at least one piece of relative position information; and
a processor, configured to measure, using the plurality of tags, the reference signal sent by the network side device, to obtain reference signal measurement information corresponding to the plurality of tags; and
wherein the transceiver is further configured to:
send the reference signal measurement information corresponding to the plurality of tags to the network side device.
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