# US 2019/0174564 A1 · Systems and methods for control plane for d2d communications > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0174564 A1 - Document ID: US20190174564A1 - Status: Published application - Kind: A1 - Application number: 16/268,375 - Filed: 2019-02-05 - Published: 2019-06-06 - Earliest claimed: 2014-03-25 - Assignees: Futurewei Technologies, Inc. - Applicants: Futurewei Technologies, Inc. - Inventors: Philippe Sartori; Hossein Bagheri; Vipul Desai; Yishen Sun; Anthony C.K. Soong - Web page: https://patentgrep.com/patent/US20190174564A1 ## CPC - H04W 76/14: Direct-mode setup - H04W 28/0278: {using buffer status reports (dynamic wireless traffic scheduling definition H04W72/12)} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 92/18: between terminal devices - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract System and method embodiments are provided for controlling and managing in-network device-to-device (D2D) communications. In an embodiment, a method for a UE performing device-to-device (D2D) communication includes generating a D2D buffer status report (BSR) for a D2D communication link between the UE and a second UE that provides information related to an amount of D2D data available for transmission, wherein the D2D BSR comprises a D2D BSR logical channel identifier (LCID); transmitting the D2D BSR in a control element; receiving, a resource allocation for the D2D link; and transmitting D2D data over the allocated resources. ## Claims ### Claim 1 A method for managing a device-to-device (D2D) communication, the method comprising: transmitting D2D configuration information to a user equipment (UE); receiving a D2D buffer status report (BSR) for a D2D link, wherein the D2D BSR comprises an amount of D2D data available for transmission at the UE and comprises a first logical channel identifier (LCID) for the D2D BSR; allocating resources for the D2D link; and transmitting a resource allocation to the UE. ### Claim 2 (depends on 1) The method of claim 1, wherein transmitting the D2D configuration information further comprises transmitting a group ID associated with the D2D link. ### Claim 3 (depends on 1) The method of claim 1 further comprising: receiving, from the UE, a cellular BSR, wherein the cellular BSR comprises a second LCID different than the first LCID for the D2D BSR. ### Claim 4 (depends on 1) The method of claim 1, wherein the amount of D2D data available for transmission is for transmission of the D2D data on the D2D link. ### Claim 5 A method for managing a D2D communication at an eNB, the method comprising: receiving information about a D2D UE group communication, wherein the information comprises a D2D group ID for a D2D communication link of a D2D group, an identity of a D2D group master, and information related to at least one of a plurality of eNBs managing the D2D communication link; determining that the eNB is the D2D group master; and communicating a resource allocation to at least one of a plurality of eNBs for at least one D2D UE in the D2D group. ### Claim 6 (depends on 5) The method of claim 5, further comprising: updating the D2D group. ### Claim 7 (depends on 6) The method of claim 6, wherein updating the D2D group comprises: updating information about a UE handing off to a new cell. ### Claim 8 (depends on 6) The method of claim 6, wherein updating the D2D group further comprises: receiving an update from at least one server. ### Claim 9 (depends on 8) The method of claim 8, wherein the at least one server is selected from a central controller and a proximity server. ### Claim 10 (depends on 8) The method of claim 8, wherein the at least one server is the D2D group master. ### Claim 11 (depends on 5) The method of claim 5, further comprising: requesting of the at least one of the plurality of eNBs to transmit a report comprising information of D2D buffer status report (BSR) for UEs in the D2D group. ### Claim 12 A wireless device performing device-to-device (D2D) communication, comprising: a memory storage comprising instructions; and one or more processors in communication with the memory storage, wherein the one or more processors execute the instructions to: transmit D2D configuration information to a user equipment (UE); receive a D2D buffer status report (BSR) for a D2D link, wherein the D2D BSR comprises an amount of D2D data available for transmission at the UE and comprises a first logical channel identifier (LCID) for the D2D BSR; allocate resources for the D2D link; and transmit a resource allocation to the UE. ### Claim 13 (depends on 12) The wireless device of claim 12, wherein transmitting the D2D configuration information further comprises transmitting a group ID associated with the D2D link. ### Claim 14 (depends on 12) The wireless device of claim 12, wherein the one or more processors execute the instructions to further: receive, from the UE, a cellular BSR, wherein the cellular BSR comprises a second LCID different than the first LCID for the D2D BSR. ### Claim 15 (depends on 12) The wireless device of claim 12, wherein the amount of D2D data available for transmission is for transmission of the D2D data on the D2D link. ### Claim 16 An apparatus comprising: a memory storage comprising instructions; and one or more processors in communication with the memory storage, wherein the one or more processors execute the instructions to: receive information about a D2D UE group communication, wherein the information comprises a D2D group ID for a D2D communication link of a D2D group, an identity of a D2D group master, and information related to at least one of a plurality of eNBs managing the D2D communication link; determine that the apparatus is the D2D group master; and communicate a resource allocation to at least one of a plurality of eNBs for at least one D2D UE in the D2D group. ### Claim 17 (depends on 16) The apparatus of claim 16, wherein the one or more processors execute the instructions to: update the D2D group. ### Claim 18 (depends on 17) The apparatus of claim 17, wherein updating the D2D group comprises: updating information about a UE handing off to a new cell. ### Claim 19 (depends on 17) The apparatus of claim 17, wherein updating the D2D group further comprises: receiving an update from at least one server. ### Claim 20 (depends on 16) The apparatus of claim 16, further comprising: request of the at least one of the plurality of eNBs to transmit a report comprising information of D2D buffer status report (BSR) for UEs in the D2D group.