# US 2021/0345189 A1 · Long term evolution radio access network > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0345189 A1 - Document ID: US20210345189A1 - Status: Published application - Kind: A1 - Application number: 17/198,953 - Filed: 2021-03-11 - Published: 2021-11-04 - Earliest claimed: 2013-02-12 - Assignees: AltioStar Networks, Inc. - Applicants: AltioStar Networks, Inc. - Inventors: Ashraf M. Dahod; Parvez Munir Khan; Si Nguyen; Kuntal Chowdhury - Web page: https://patentgrep.com/patent/US20210345189A1 ## CPC - H04W 36/0055: {Transmission or use of information for re-establishing the radio link} - H04W 72/04: Wireless resource allocation - H04W 76/12: Setup of transport tunnels - H04W 80/02: Data link layer protocols - H04W 88/085: {Access point devices with remote components} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A system, a method, and a computer program product for coordinating communication of data packets between a user device and a core network are disclosed. The system includes a first device communicatively coupled to the core network, a second device communicatively coupled to the first device. The second device receives signals from the user device. The first device and the second device share at least one functionality associated with layer 2 of a long term evolution radio access network. ## Claims ### Claim at position 1 1-102. (canceled) ### Claim 103 A computer-implemented method for coordinating communication of a plurality of data packets, wherein a first base station including a first baseband unit device communicatively coupled to a plurality of radio devices, wherein a packet data convergence protocol functionality is split between one or more radio devices in the plurality of radio devices and the first baseband unit device, the method comprising: receiving, using the first base station, data packets from at least one user device; initiating, using at least the first baseband unit device, a handover of communication of the data packets received from the at least one user device from a first base radio device in the plurality of radio devices to a second radio device in the plurality of radio devices; and transmitting, using the second radio device, at least one data packet to the at least one user device upon detecting completion of the handover to the second radio device. ### Claim 104 (depends on 103) The method according to claim 103, wherein the initiating includes initiating the handover in a control plane. ### Claim 105 (depends on 104) The method according to claim 104, wherein the initiating includes initiating the handover in a user plane. ### Claim 106 (depends on 105) The method according to claim 105, further comprising performing a handover, using the second radio device, to a second base station, the second base station including a second baseband unit device and a third radio device communicatively coupled to the second baseband unit device. ### Claim 107 (depends on 103) The method according to claim 103, wherein the initiating includes transmitting at least one radio resource control message. ### Claim 108 (depends on 107) The method according to claim 107, wherein the initiating includes combining one or more configuration messages associated with Layer 1 and Layer 2 of a long term evolution radio access network. ### Claim 109 (depends on 103) The method according to claim 103, wherein the first baseband unit device includes a first packet data convergence functionality portion, each radio device in the plurality of radio devices includes at least a second packet data convergence functionality portion, the first packet data convergence functionality portion coordinates transmission of at least one compressed and sequence-numbered data packet from the first baseband unit device to one or more radio devices in the plurality of radio devices based on a buffer occupancy report generated by the one or more radio devices in the plurality of radio devices. ### Claim 110 (depends on 103) The method according to claim 103, wherein each radio device in the plurality of radio devices includes at least one a remote radio head, the remote radio head including a radio transmitter and a radio receiver; the first baseband unit device is communicatively coupled to a core network using a backhaul connection; each radio device in the plurality of radio devices is communicatively coupled to the first baseband unit device using at least one fronthaul Ethernet connection, wherein a plurality messages being associated with establishing communication between the at least one user device and the core network are transmitted using the at least one fronthaul Ethernet connection. ### Claim 111 A system for coordinating communication of a plurality of data packets, wherein a first base station including a first baseband unit device communicatively coupled to a plurality of radio devices, wherein a packet data convergence protocol functionality is split between one or more radio devices in the plurality of radio devices and the first baseband unit device, the system comprising: at least one memory; and at least one processor operatively coupled to the memory, the at least one processor being configured to: receiving, using the first base station, data packets from at least one user device; initiating, using at least the first baseband unit device, a handover of communication of the data packets received from the at least one user device from a first base radio device in the plurality of radio devices to a second radio device in the plurality of radio devices; and transmitting, using the second radio device, at least one data packet to the at least one user device upon detecting completion of the handover to the second radio device. ### Claim 112 (depends on 111) The system according to claim 111, wherein the initiating includes initiating the handover in a control plane. ### Claim 113 (depends on 112) The system according to claim 112, wherein the initiating includes initiating the handover in a user plane. ### Claim 114 (depends on 113) The system according to claim 113, wherein the operations further comprise performing a handover, using the second radio device, to a second base station, the second base station including a second baseband unit device and a third radio device communicatively coupled to the second baseband unit device. ### Claim 115 (depends on 111) The system according to claim 111, wherein the initiating includes transmitting at least one radio resource control message. ### Claim 116 (depends on 115) The system according to claim 115, wherein the initiating includes combining one or more configuration messages associated with Layer 1 and Layer 2 of a long term evolution radio access network. ### Claim 117 (depends on 111) The system according to claim 111, wherein the first baseband unit device includes a first packet data convergence functionality portion, each radio device in the plurality of radio devices includes at least a second packet data convergence functionality portion, the first packet data convergence functionality portion coordinates transmission of at least one compressed and sequence-numbered data packet from the first baseband unit device to one or more radio devices in the plurality of radio devices based on a buffer occupancy report generated by the one or more radio devices in the plurality of radio devices. ### Claim 118 (depends on 111) The system according to claim 111, wherein each radio device in the plurality of radio devices includes at least one a remote radio head, the remote radio head including a radio transmitter and a radio receiver; the first baseband unit device is communicatively coupled to a core network using a backhaul connection; each radio device in the plurality of radio devices is communicatively coupled to the first baseband unit device using at least one fronthaul Ethernet connection, wherein a plurality messages being associated with establishing communication between the at least one user device and the core network are transmitted using the at least one fronthaul Ethernet connection. ### Claim 119 A computer program product for coordinating communication of a plurality of data packets, wherein a first base station including a first baseband unit device communicatively coupled to a plurality of radio devices, wherein a packet data convergence protocol functionality is split between one or more radio devices in the plurality of radio devices and the first baseband unit device, comprising a non-transitory machine-readable medium storing instructions that, when executed by at least one programmable processor, cause the at least one programmable processor to perform operations comprising: receiving, using the first base station, data packets from at least one user device; initiating, using at least the first baseband unit device, a handover of communication of the data packets received from the at least one user device from a first base radio device in the plurality of radio devices to a second radio device in the plurality of radio devices; and transmitting, using the second radio device, at least one data packet to the at least one user device upon detecting completion of the handover to the second radio device. ### Claim 120 (depends on 119) The computer program product according to claim 119, wherein the initiating includes initiating the handover in at least one of: a control plane and a user plane. ### Claim 121 (depends on 120) The computer program product according to claim 120, wherein the operations further comprise performing a handover, using the second radio device, to a second base station, the second base station including a second baseband unit device and a third radio device communicatively coupled to the second baseband unit device. ### Claim 122 (depends on 119) The computer program product according to claim 119, wherein the initiating includes transmitting at least one radio resource control message; and combining one or more configuration messages associated with Layer 1 and Layer 2 of a long term evolution radio access network.