| Symbol | Description |
| | is the set of tasks in mobile device. | , | The input and output data size of task . | | The CPU cycles frequency that is required to process task | , , | The computational capability of the cloud server, mobile device, and edge server | , , , | The transmitting, receiving, idle, and execution powers of mobile device | , , | The position coordinate, transmission bandwidth, and maximum communication range of edge server | | The position coordinate of the intelligent prosthesis | | Signal-to-noise ratio (SNR) | | Instantaneous transmission rate between edge server and mobile device | , , | The total execution time of the edge servers, cloud server, and mobile device. | , , | The total energy consumption when the tasks are offloaded to the edge servers, cloud server, or computed locally. | | The instantaneous transmission rate between two edge servers. |
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