Method and apparatus of resource sharing for device-to-device and cellular communications

摘要

The present disclosure provides a method and an apparatus of resource sharing for D2D and cellular communications. The method may comprise: determining a cellular user set containing potential cellular users that may share resources with a D2D pair; and determining transmit power of the D2D pair on a frequency band of at least one cellular user in the cellular user set and transmit power of the at least one cellular user through maximizing throughput of the D2D pair with a quality of service (QoS) constraint and a power budget constraint of each of the potential cellular users and a transmit power constraint of the D2D pair. With embodiments of the present disclosure, it may provide a non-orthogonal resource sharing solution in which a D2D pair can reuse resources of the cellular users as more as possible while the QoS of all the cellular users are guaranteed, whereby the performance of the D2D user may be improved greatly.

主权项

1. A method of resource sharing for device-to-device (D2D) and cellular communications, comprising:
determining a cellular user set containing potential cellular users that may share resources with a D2D pair; and determining transmit power of the D2D pair on a frequency band of at least one cellular user in the cellular user set and transmit power of the at least one cellular user through maximizing throughput of the D2D pair with a quality of service (QoS) constraint and a power budget constraint of each of the potential cellular users and a transmit power constraint of the D2D pair, wherein the determining the cellular user set comprises: for each of scheduled cellular users, performing a feasibility checking to find cellular users whose QoS can be guaranteed without resource sharing, and wherein the performing the feasibility checking comprises: determining whether power budget of each of the scheduled cellular users satisfy:
2ρi−1≦αiPi wherein ρi is a QoS threshold of cellular user i, αi denotes normalized channel gain from the cellular user i to a base station; and Pi is power budget of the cellular user i.