Alternatively, the above communication module may also be configured to:
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        - transmit a sixth message to the seventh node, wherein the sixth message is used to request configuration information corresponding to the user terminal accessing the seventh node;
- receive a response message of the sixth message, wherein the response message includes configuration information about the transmission and/or processing of the data packet by the user terminal accessing the seventh node.
 
The embodiment of the disclosure also provides a communication apparatus, which may be implemented as a constituent part of a user terminal, wherein the communication apparatus includes a communication module, and the communication module is configured to:
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        - receive a fifth message, wherein the fifth message includes configuration information about transmitting and/or processing of the data packet by the user terminal accessing the seventh node, wherein the transmission configuration information include configuration information corresponding to the migrated relay node before the migration, and/or, configuration information corresponding to the migrated relay node after the migration; transmit and/or process the data packet based on the fifth message.