Methods and apparatuses of allocating resources for device-to-device communication

A method of allocating resources for device-to-device communication, comprising:

• determining share channel rates for channels if each device-to-device pair shares resources with the respective potential cellular users;
• determining non-share channel rates for channels if the each device-to-device pair does not share resources with the respective potential cellular users;
• determining, for the each device-to-device pair, rate differences between the share channel rates and the non-share channel rates corresponding thereto;
• and
• allocating resources assigned to a cellular user to a device-to-device pair based on the rate differences for the each device-to-device pair.

Apparatus for allocating resources for device-to-device communication, comprising:

• communication pair selection module configured to select, from device-to-device pairs that need to be allocated resources and are sorted based on channel condition in descending order, a device-to-device pair ranking first in the device-to-device pairs;
• sum rate determination module configured to determine system sum rates for channels if the device-to-device pair shares resources with respective potential cellular users;
• and
• resource allocation module configured to allocate resources assigned to a cellular user to the device-to-device pair based on the determined system sum rates.

An apparatus for allocating resources for device-to-device communication, comprising:

• share channel rate determination module configured to determine share channel rates for channels if each device-to-device pair shares resources with the respective potential cellular users;
• non-share channel rate determination module configured to determine non-share channel rates for channels if the each device-to-device pair does not share resources with the respective potential cellular users;
• rate difference determination module configured to determine, for the each device-to-device pair, rate differences between the share channel rates and the corresponding non-share channel rates;
• and
• resource allocation module, configured to allocate resources assigned to a cellular user to a device-to-device pair based on the rate differences for the each device-to-device pair.