RANDOM ACCESS METHOD AND APPARATUS BASED ON ANALOG NETWORK CODING FOR TWO-WAY RELAY CHANNEL

摘要

The present invention generally relates to a random access method and apparatus based on analog network coding for a satellite network and, more particularly, to technology that combines analog network coding with random access, thus guaranteeing high channel usage efficiency upon utilizing the technology for a satellite positioning/communications convergence system. For this, a random access apparatus based on analog network coding for a satellite network according to an embodiment of the present invention includes a received signal determination unit, a data packet transmission unit, a reserved slot decision unit, a response message reception unit, and a data packet decoding unit.

主权项

1. A random access method based on analog network coding, comprising:
receiving, by a first terminal station, a communication channel for one frame period of a communication network and determining a status of occupation of each slot; selecting, by the first terminal station, an empty slot as a first slot, and transmitting a first data packet for analog network coding in the selected first slot over the communication network; receiving, by the first terminal station, data in the first slot in which the first data packet is transmitted, and determining whether a collision has occurred between the transmitted first data packet and any additional data packet in the first slot; and deciding on, by the first terminal station, the first slot as a reserved slot if a collision has not occurred in the first slot.