Joint wireless channel allocation and power control method for relay enhanced D2D communication

Joint wireless channel allocation and power control method for relay enhanced D2D communication

  • CN 110,049,473 B
  • Filed: 04/18/2019
  • Issued: 08/10/2021
  • Est. Priority Date: 04/18/2019
  • Status: Active Grant
First Claim
Patent Images

1. A joint wireless channel allocation and power control method for relay enhanced D2D communication is characterized by comprising the following steps:

  • s1, under a simulated real link scene, with minimized system total power consumption as an objective function, respectively taking the service quality of a cellular user, the service quality of a D2D user, the power limit of the cellular user, the power limit of a D2D user, the power limit of a relay node, the channel multiplexing condition and the communication mode as constraint conditions, and determining a first optimization problem;

    the simulated real link scenario comprises;

    the system comprises K cellular users, L pairs of D2D users and M relay devices, wherein the K cellular users and the L pairs of D2D users are randomly distributed in a cell, the M relay devices are uniformly distributed in the cell, M >

    L, the cell has K channels in total, each cellular user independently uses one channel, each D2D user can multiplex channel resources of a plurality of cellular users, the resources of each cellular user can be multiplexed by a plurality of D2D users, each relay can only provide service for one D2D link, and one D2D link can only select one relay node for relay communication;

    dividing each scheduling period into two time slots with equal duration, sending data to a base station by a cellular user in the two time slots, sending data to corresponding receiving terminals by a sending end of a direct communication D2D link in the two time slots, sending data to a relay node selected by the sending end of a relay communication D2D link in a first time slot, and then forwarding the data to the corresponding receiving terminals by the relay node in a second time slot;

    the first optimization problem expression is as follows;

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×