Network-assisted channel selection and power control for mobile devices
Facilitation of a network assisted device-decided system can increase throughput of D2D devices and the link reliability of macrocells. In a network assisted device-decided system a macrocell can broadcast resource allocation data to D2D devices. The D2D devices can then select channels and adjust transmission power to offload traffic from the macrocell, thus creating a high spectrum efficiency with low power.
1. A method, comprising:
sending, by a device comprising a processor, preferred sub-channel data representing a set of preferred sub-channels enabling connection of the device to a network device of a network;
receiving, by the device, resource allocation instruction data comprising power data representing an allowable transmission power of each preferred sub-channel;
selecting, by the device, at least one preferred sub-channel from the set of preferred sub-channels to increase a data throughput of the device, wherein the selecting comprises determining the at least one preferred sub-channel at least in part based on information received from the network device; and
selecting, by the device, a transmission power of the device in accordance with the at least one preferred sub-channel, wherein the selecting the transmission power comprises selecting the transmission power based on data link gain information and a sub-channel usage ratio, wherein the sub-channel usage ratio is a ratio of a number of allowable sub-channels of the device to a total number of sub-channels of the device.
2. The method of claim 1 , wherein the allowable transmission power of the device is a predefined allowable transmission power.
3. The method of claim 1 , wherein the resource allocation instruction data comprises a predefined allowable transmission power of at least one sub-channel of the set of preferred sub-channels of the device.
4. The method of claim 1 , wherein the selecting the at least one preferred sub-channel comprises randomly or pseudo-randomly selecting the at least one preferred sub-channel for a data transmission.
5. The method of claim 1 , wherein the selecting the at least one preferred sub-channel comprises selecting the at least one preferred sub-channel based on data link information of the device.
6. The method of claim 1 , wherein the selecting the at least one preferred sub-channel comprises selecting the at least one preferred sub-channel based on a sub-channel usage ratio wherein the sub-channel usage ratio is a ratio of a number of allowable sub-channels of the device to a total number of sub-channels of the device.
7. The method of claim 1 , wherein the selecting the at least one preferred sub-channel comprises selecting the at least one preferred sub-channel in response to receiving the resource allocation instruction data from the network device.
8. The method of claim 1 , wherein the preferred sub-channel data comprises gain information of a data link throughput.
9. The method of claim 1 , wherein the selecting the transmission power comprises decreasing the transmission power of the device to decrease the sub-channel interference of the device.