User equipment, evolved node B, and method for multicast device-to-device communications
AssigneeIntel Corporation
InventorKamran Etemad
Life of this patent
Estimating the term…
Abstract
Apparatuses and methods for supporting multicast device-to-device communications are described herein. A user equipment (UE) may transmit a request to a serving evolved Node B (eNodeB) for permission to transmit to a group of peer UEs. The UE may receive a resource assignment in response to the request. The resource allocation assignment may specify a group identifier. The group identifier may identify a group including the UE and the group of peer UEs. The UE may transmit a multicast transmission to the group of peer UEs using a resource assigned by the eNodeB with the resource assignment.
Claims20
User Equipment (UE) comprising circuitry to:
- transmit a request to a serving evolved Node B (eNodeB) for permission to transmit to a group of peer UEs, wherein the group of peer UEs is established using application layer signaling directly between peer applications running on respective peer UEs of the group of peer UEs, wherein the peer applications include one of a net meeting application, a group chat application, and Skype;
- receive a resource allocation assignment in response to the request, the resource allocation assignment specifying a group identifier, the group identifier identifying a group including the UE and the group of peer UEs, wherein the group identifier is a multicast media access control-layer radio network temporary identifier (MC-RNTI) in accordance with a standard of the 3rd Generation Partnership Project (3GPP) family of standards for long term evolution (LTE);
- and
- transmit a D2D multicast transmission to the group of peer UEs using a resource assigned by the serving eNodeB.
An evolved Node B(eNodeB) to control group device-to-device communications, the eNodeB comprising:
- a communications interface arranged to receive a request, from a user equipment (UE) served by the eNodeB, for permission to transmit a multicast message to a group of peer UEs, the group of peer UEs being served by the eNodeB, wherein the group of peer UEs is established using application layer signaling directly between peer applications running on respective peer UEs of the group of peer UEs, wherein the peer applications include one of a net meeting application, a group chat application, and Skype, one or more processors arranged to assign an uplink resource to the UE based on the request, a resource grant of the uplink resource specifying a group identifier for the group of peer UEs and a member identifier for the requesting UE, wherein the group identifier is a multicast media access control-layer radio network temporary identifier (MC-RNTI) in accordance with a standard of the 3<sup>rd</sup> Generation Partnership Project (3GPP) family of standards for long term evolution (LTE), and coordinate requests, received from peer UEs in the group of peer UEs, for permission to transmit D2D multicast messages to the group of peer UEs.
A method, performed by user equipment (UE), for multicast device-to-device communications, the method comprising:
- transmitting a buffer status report (BSR) to an evolved Node B (eNodeB), the BSR including a logical channel group identifier (LCGID) of the UE, to request permission to transmit to a group of peer UEs, wherein the group of peer UEs is established using application layer signaling directly between peer applications running on respective peer UEs of the group of peer UEs, wherein the peer applications include one of a net meeting application, a group chat application, and Skype;
- receiving a resource allocation assignment in response to the transmission of the BSR, the resource allocation assignment specifying a group identifier for the group of peer UEs and a member identifier for the UE;
- and
- transmitting a D2D multicast transmission, on an uplink device-to-device communication resource allocated by the resource allocation, to the group of peer UEs identified by the group identifier.
A method, performed by an evolved Node B (eNodeB), for controlling group device-to-device communications, the method comprising:
- receiving a request, from a user equipment (UE), for permission to transmit a multicast message to a group of peer UEs, the group of peer UEs being within a geographic area served by the eNodeB, wherein the group of peer UEs is established using application layer signaling directly between peer applications running on respective peer UEs of the group of peer UEs, wherein the peer applications include one of a net meeting application, a group chat application, and Skype;
- and
- assigning an uplink resource to the requesting UE based on the request, a resource grant for the uplink resource specifying a group identifier for the group of peer UEs and a member identifier for the requesting UE, wherein the group identifier is a multicast media access control-layer radio network temporary identifier (MC-RNTI) in accordance with a standard of the 3<sup>rd</sup> Generation Partnership Project (3GPP) family of standards for long term evolution (LTE).
Dependencies are inferred from the claim text.