Device to device communications
AssigneeNokia Solutions and Networks Oy
InventorsVinh Van Phan, Ling Yu, Kari Veikko Horneman
Life of this patent
Estimating the term…
Abstract
In a network controlled device to device service a reference radio bearer that would provide an adequate service in a cellular access mode is determined. Information of semi-static resource allocation is then determined for the reference radio bearer and signalled to at least one device for use in configuring the at least one device for device to device communications. The at least one device can use the information as guidance when configuring for device to device communications.
Claims28
A method for controlling device-to-device communications, comprising:
- determining a reference radio bearer which is based on semi-persistent scheduling, wherein the reference radio bearer would provide an adequate service in a cellular access mode,
- determining an information of a semi-static resource allocation for the reference radio bearer,
- determining a device-to-device communications mode specific offset for a link budget parameter,
- signalling a configuration of the reference radio bearer, the information of the semi-static resource allocation for the reference radio bearer and the device-to-device communications mode specific offset for a link budget parameter to the at least one device for use in configuring the at least one device for a device-to-device communications mode, and
- configuring the reference radio bearer to become an actual radio bearer in a cellular access mode upon the at least one device switching modes from the device-to-device communications mode to the cellular access mode.
A method for device-to-device communications, comprising:
- obtaining, by a device, a configuration of a reference radio bearer and information of a semi-static resource allocation for the reference radio bearer which is based on semi-persistent scheduling, wherein the reference bearer is determined to provide an adequate service in a cellular access mode,
- receiving, by the device, a device-to-device communications mode specific offset for a link budget parameter,
- configuring the device for the device-to-device communications mode based on the configuration of the reference radio bearer, the information of semi-static resource allocation and the device-to-device communications mode specific offset for the link budget parameter, and
- switching, by the device, a mode from the device-to-device communications mode to the cellular access mode, and applying the reference radio bearer as an actual radio bearer in the cellular access mode.
An apparatus for a network enabling device-to-device communications, the apparatus comprising at least one processor, and at least one memory including computer program code, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the apparatus to:
- determine a reference radio bearer which is based on semi-persistent scheduling, wherein the reference radio bearer would provide an adequate service in a cellular access mode,
- determine an information of a semi-static resource allocation for the reference radio bearer,
- determine a device-to-device communications mode specific offset for a link budget parameter,
- cause signalling of a configuration of the reference radio bearer, the information of the semi-static resource allocation for the reference radio bearer and the device-to-device communications mode specific offset for a link budget parameter to the at least one device for use in configuring the at least one device for device-to-device communications mode, and
- configure the reference radio bearer to become an actual radio bearer in a cellular access mode upon the at least one device switching modes from the device-to-device communications mode to the cellular access mode.
An apparatus for a wireless device, the apparatus comprising at least one processor, and at least one memory including computer program code, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the apparatus to:
- obtain, by a device, a configuration of a reference radio bearer and information of a semi-static resource allocation for the reference radio bearer which is based on semi-persistent scheduling, wherein the reference radio bearer is determined to provide an adequate service in a cellular access mode
- receive, by the device, a device-to-device communications mode specific offset for a link budget parameter,
- configure, by the device, the device for a device-to-device communications mode based on the configuration of the reference radio bearer, the information of semi-static resource allocation and the device-to-device communications mode specific offset for a link budget parameter, and
- switch, by the device, a mode from the device-to-device communications mode to the cellular access mode, and apply the reference radio bearer as an actual radio bearer in the cellular access mode.
Dependencies are inferred from the claim text.