# US 9,521,615 B2 · Transport network relaying in energy efficient networks > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,521,615 B2 - Document ID: US9521615B2 - Status: Granted - Kind: B2 - Application number: 14/412,622 - Filed: 2012-07-03 - Published: 2015-07-02 - Granted: 2016-12-13 - Earliest claimed: 2012-07-03 - Assignees: Telefonaktiebolaget LM Ericsson (publ) - Applicants: Lars Westberg; Ralf Bergqvist; Erik Friman; Johan Rune - Inventors: Lars Westberg; Ralf Bergqvist; Erik Friman; Johan Rune - Web page: https://patentgrep.com/patent/US9521615B2 ## CPC - H04W 52/0206: {in access points, e.g. base stations} - H04W 28/0221: {power availability or consumption} - H04W 88/08: Access point devices - Y02D 30/70: in wireless communication networks - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract A method in a first network node (215) for handling transport network data traffic in a first base station (201) is provided. The first base station (201) comprises a transport network transmission equipment (205) and the transport network transmission equipment (205) is a part of a transport network. When the first base station (201) is in a sleep mode, the first network node (215) determines (306, 801) that the transport network transmission equipment (205) should be bypassed by activating a relay (209) comprised in the first base station (201) such that data traffic from a second network node (217) is transmitted via the relay (209) to a third network node (220). ## Claims ### Claim 1 A method in a first network node for handling transport network data traffic in a first base station, which first base station comprises a transport network transmission equipment and which transport network transmission equipment is a part of a transport network, the method comprising: when the first base station is in a sleep mode, determining that the transport network transmission equipment should be bypassed by activation of a relay comprised in the first base station such that data traffic from a second network node is transmitted via the relay to a third network node; and transmitting information to neighboring base stations about the bypassing of the transport network transmission equipment. ### Claim 2 (depends on 1) The method of claim 1, further comprising transmitting instructions to the first base station to bypass the transport network transmission equipment. ### Claim 3 (depends on 2) The method of claim 2, wherein the instructions comprise a trigger to trigger the activation of the relay. ### Claim 4 (depends on 2) The method of claim 2, wherein the instructions comprise a control signal enabling the first network node to directly control the activation of the relay. ### Claim 5 (depends on 2) The method of claim 2, wherein the instructions further comprise instructions to exit the sleep mode and to enter an awake mode, which awake mode is a complete wakeup mode or a partial wakeup mode. ### Claim 6 (depends on 2) The method of claim 2, wherein the instructions are transmitted periodically to the first base station. ### Claim 7 (depends on 1) The method of claim 1, wherein the first base station is configured to periodically enter the sleep mode and bypass the transport network transmission equipment. ### Claim 8 (depends on 1) The method of claim 1, wherein the first base station is in the sleep mode when the first base station experiences low traffic or a power failure. ### Claim 9 A first network node for handling transport network data traffic in a first base station, which first base station comprises a transport network transmission equipment and which transport network transmission equipment is a part of a transport network, the first network node comprising: a processor configured to, when the first base station is in a sleep mode, determine that the transport network transmission equipment should be bypassed by activation of a relay comprised in the first base station such that data traffic from a second network node is transmitted via the relay to a third network node; and a transmitter configured to transmit information to neighboring base stations about the bypassing of the transport network transmission equipment. ### Claim 10 (depends on 9) The first network node of claim 9, wherein the transmitter is configured to transmit instructions to the first base station to bypass the transport network transmission equipment. ### Claim 11 (depends on 10) The first network node of claim 10, wherein the instructions comprise a trigger to trigger the activation of the relay. ### Claim 12 (depends on 10) The first network node of claim 10, wherein the instructions comprise a control signal enabling the first network node to directly control the activation of the relay. ### Claim 13 (depends on 10) The first network node of claim 10, wherein the instructions further comprise instructions to exit the sleep mode and to enter an awake mode, which awake mode is a complete wakeup mode or a partial wakeup mode. ### Claim 14 (depends on 10) The first network node of claim 10, wherein the transmitter is configured to periodically transmit the instructions to the first base station. ### Claim 15 (depends on 9) The first network node of claim 9, wherein the first base station is configured to periodically enter the sleep mode and bypass the transport network transmission equipment. ### Claim 16 (depends on 9) The first network node of claim 9, wherein the first base station is in the sleep mode when the first base station experiences low traffic or a power failure. ### Claim 17 (depends on 9) The first network node of claim 9, wherein the first network node is represented by a first Operation and Management (O&M) node or a first Radio Network Control (RNC) node or the first base station. ### Claim 18 (depends on 17) The first network node of claim 17, wherein the second network node is represented by a second Operation and Management (O&M) node or a second Radio Network Control (RNC) node or a second base station and wherein the third network node is represented by a third Operation and Management (O&M) node or a third Radio Network Control (RNC) node or a third base station.