# US 2020/0288392 A1 · Energy-Efficient Base Station With Synchronization > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0288392 A1 - Document ID: US20200288392A1 - Status: Published application - Kind: A1 - Application number: 16/813,244 - Filed: 2020-03-09 - Published: 2020-09-10 - Earliest claimed: 2019-03-08 - Assignees: Parallel Wireless, Inc. - Applicants: Parallel Wireless, Inc. - Inventors: Prashanth Rao; Steven Paul Papa; Christopher Simmonds; Ramesh Annavajjala - Web page: https://patentgrep.com/patent/US20200288392A1 ## CPC - H04W 52/0206: {in access points, e.g. base stations} - H04B 7/0693: {switching off a diversity branch, e.g. to save power} - H04W 16/28: using beam steering - H04W 24/02: Arrangements for optimising operational condition - H04W 24/08: Testing, {supervising or monitoring} using real traffic - H04W 36/04: Reselecting a cell layer in multi-layered cells - H04W 48/12: using downlink control channel - H04W 36/22: for handling the traffic - 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) - H04B: TRANSMISSION - 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 Systems, methods and computer software are disclosed for providing an energy efficient base station with synchronization. In one embodiment, a method is disclosed, comprising: performing traffic analysis to determine off-peak hours duration when traffic is light; updating downlink and uplink schedulers to transmit a minimum required signaling and control information; and wherein updating downlink and uplink scheduler for minimum required signaling and control information further comprises scheduling, in a downlink direction, at least one of transmitting only reference symbols over selected OFDM symbols, PDDCH on to a first three OFDM symbols, PSS and SSS on a central six PRBs and PBCH. ## Claims ### Claim 1 A method for providing an energy efficient base station with synchronization, comprising: performing traffic analysis to determine off-peak hours duration when traffic is light; updating downlink and uplink schedulers to transmit a minimum required signaling and control information; and wherein updating downlink and uplink scheduler for minimum required signaling and control information further comprises scheduling, in a downlink direction, at least one of transmitting only reference symbols over selected OFDM symbols, PDDCH on to a first three OFDM symbols, PSS and SSS on a central six PRBs and PBCH. ### Claim 2 (depends on 1) The method of claim 1, wherein updating downlink and uplink scheduler for minimum required signaling and control information further comprises scheduling, in an uplink direction, transmitting at least one of only PUCCH and PRACH. ### Claim 3 (depends on 1) The method of claim 1, further comprising selecting the selected OFDM symbols based on measured past power efficiency. ### Claim 4 (depends on 1) The method of claim 1, further comprising selecting the selected OFDM symbols based on the selected OFDM symbols being contiguous with one another. ### Claim 5 (depends on 1) The method of claim 1, further comprising selecting the selected OFDM symbols based on the selected OFDM symbols being at or near a beginning or an end of a subframe. ### Claim 6 (depends on 1) The method of claim 1, further comprising scheduling user data transmissions based on power efficiency. ### Claim 7 (depends on 1) The method of claim 1, further comprising identifying user equipments to handover to a macro base station or neighboring base station. ### Claim 8 (depends on 1) The method of claim 1, further comprising turning off additional antennas, power amplifiers and Multiple In Multiple Out (MIMO) antennas. ### Claim 9 (depends on 1) The method of claim 1, wherein performing traffic analysis to determine off-peak hours duration when traffic is light further comprises using self-organizing network (SON) for analysis of user activity and based on the analysis determining at least one of a time of day and a day of the week when a number of users are below a pre-defined threshold. ### Claim 10 (depends on 1) The method of claim 1, further comprising increasing energy efficiency by increasing a linearity of a power amplifier. ### Claim 11 (depends on 10) The method of claim 10, wherein increasing a linearity of a power amplifier includes at least one of using feed forward, pre-distortion, Cartesian feedback, digital pre-distortion, Doherty power amplifier and crest factor reduction. ### Claim 12 A non-transitory computer-readable medium containing instructions for providing an energy efficient base station with synchronization which, when executed, cause a node to perform steps comprising: performing traffic analysis to determine off-peak hours duration when traffic is light; updating downlink and uplink schedulers to transmit a minimum required signaling and control information; and wherein updating downlink and uplink scheduler for minimum required signaling and control information further comprises scheduling, in a downlink direction, at least one of transmitting only reference symbols over selected OFDM symbols, PDDCH on to a first three OFDM symbols, PSS and SSS on a central six PRBs and PBCH. ### Claim 13 (depends on 12) The non-transitory computer-readable medium of claim 12 further including instructions wherein updating downlink and uplink scheduler for minimum required signaling and control information further comprises scheduling, in an uplink direction, transmitting at least one of only PUCCH and PRACH. ### Claim 14 (depends on 12) The non-transitory computer-readable medium of claim 12 further including instructions for selecting the selected OFDM symbols based on measured past power efficiency. ### Claim 15 (depends on 12) The non-transitory computer-readable medium of claim 12 further including instructions for selecting the selected OFDM symbols based on the selected OFDM symbols being contiguous with one another. ### Claim 16 (depends on 12) The non-transitory computer-readable medium of claim 12 further including instructions for selecting the selected OFDM symbols based on the selected OFDM symbols being at or near a beginning or an end of a subframe. ### Claim 17 (depends on 12) The non-transitory computer-readable medium of claim 12 further including instructions for scheduling user data transmissions based on power efficiency. ### Claim 18 (depends on 12) The non-transitory computer-readable medium of claim 12 further comprising instructions wherein performing traffic analysis to determine off-peak hours duration when traffic is light further comprises using self-organizing network (SON) for analysis of user activity and based on the analysis determining at least one of a time of day and a day of the week when a number of users are below a pre-defined threshold. ### Claim 19 A system for providing an energy efficient base station with synchronization, comprising: a node configured to perform traffic analysis to determine off-peak hours duration when traffic is light; update downlink and uplink schedulers to transmit a minimum required signaling and control information; and wherein the downlink and uplink scheduler are updated for minimum required signaling and control information, including scheduling, in a downlink direction, at least one of transmitting only reference symbols over selected OFDM symbols, PDDCH on to a first three OFDM symbols, PSS and SSS on a central six PRBs and PBCH. ### Claim 20 (depends on 19) The system of claim 19 wherein updating downlink and uplink scheduler for minimum required signaling and control information further comprises scheduling, in an uplink direction, transmitting at least one of only PUCCH and PRACH.