# US 2014/0155117 A1 · Shaping Table Reconfiguration At Communication Event Boundaries > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0155117 A1 - Document ID: US20140155117A1 - Status: Published application - Kind: A1 - Application number: 13/923,902 - Filed: 2013-06-21 - Published: 2014-06-05 - Earliest claimed: 2012-12-03 - Assignees: Broadcom Corporation - Applicants: Broadcom Corporation - Inventors: Ying Xia; Gowrisankar Somichetty; Bongseok Park; Sriram Rajagopal; Sriraman Dakshinamurthy; Robert Gustav Lorenz - Web page: https://patentgrep.com/patent/US20140155117A1 ## CPC - H04W 52/54: Signalisation aspects of the TPC commands, e.g. frame structure - H04W 52/0261: {managing power supply demand, e.g. depending on battery level} - H04W 52/08: Closed loop power control - 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 communication device, such as a smart phone, receives a power specification message from a network controller. The power specification message specifies an output power applicable for a particular communication subframe or symbol within the subframe. In response to the power specification message, the communication device determines a new shaping table and replaces an existing shaping table with the new shaping table. The communication device uses the shaping table to generate an envelope signal for an envelope tracking power supply, and the new shaping table is adapted to provide power saving operation at the specified output power. ## Claims ### Claim 1 A system comprising: a shaping table operable to modify an input signal to produce an output signal; a power supply interface operable to communicate the output signal to a power supply; and a controller operable to: determine that an event is upcoming; determine a modification to the shaping table responsive to the event; and implement the modification to the shaping table for the event. ### Claim 2 (depends on 1) The system of claim 1, where the event comprises occurrence of a communication signal boundary. ### Claim 3 (depends on 2) The system of claim 2, where the communication signal boundary comprises a subframe boundary within a larger communication frame. ### Claim 4 (depends on 2) The system of claim 2, where the communication signal boundary comprises a symbol boundary within a larger communication frame. ### Claim 5 (depends on 1) The system of claim 1, where the controller is further operable to: receive, from a network controller, an operational parameter; and where: the controller is further operable to determine the modification responsive to the event and to the operational parameter. ### Claim 6 (depends on 5) The system of claim 5, where the operational parameter comprises a transmit power. ### Claim 7 (depends on 5) The system of claim 5, where the operational parameter comprises a transmit power commanded by the network controller for the event. ### Claim 8 (depends on 5) The system of claim 5, where the operational parameter comprises a wireless communication output power for the event; and where the event comprises occurrence of an upcoming subframe in a larger communication frame. ### Claim 9 (depends on 1) The system of claim 1, further comprising: an envelope tracking power supply in communication with the power supply interface, the envelope tracking power supply operable to: receive the output signal; and generate a power supply voltage signal that approximates an envelope of the output signal. ### Claim 10 A method comprising: in user equipment: receiving a power specification message from a network controller, the power specification message specifying an output power; determining a new shaping table in response to the output power; replacing an existing shaping table with the new shaping table; and generating an envelope signal for a power supply with the new shaping table. ### Claim 11 (depends on 10) The method of claim 10, where receiving comprises: receiving a power specification message that also specifies an upcoming communication event to which the output power is applicable. ### Claim 12 (depends on 11) The method of claim 11, where replacing further comprises: replacing the existing shaping table with the new shaping table prior to the communication event. ### Claim 13 (depends on 10) The method of claim 10, where receiving comprises: receiving a power specification message that also specifies a subframe boundary within a larger communication frame to which the output power is applicable. ### Claim 14 (depends on 10) The method of claim 10, where receiving comprises: receiving a power specification message that also specifies a symbol within a larger communication frame to which the output power is applicable. ### Claim 15 (depends on 14) The method of claim 14, where the symbol comprises an uplink quality estimation symbol. ### Claim 16 (depends on 14) The method of claim 14, where the symbol comprises an uplink quality estimation symbol; and sending the uplink quality estimation symbol to the network controller at the output power. ### Claim 17 (depends on 10) The method of claim 10, where determining comprises: searching in a library of predefined shaping tables for the new shaping table applicable at the output power; and retrieving from the library the new shaping table. ### Claim 18 A system comprising: a baseband controller; a shaping table in communication with the baseband controller, the shaping table operable to modify input signal samples to provide envelope tracking signals characterized by a signal envelope; an envelope tracking power supply operable to receive the envelope tracking signals and output a power supply voltage signal that approximates the signal envelope; and a power amplifier operable to receive the power supply voltage signal and drive a transmit antenna; where: the baseband controller is operable to: obtain the input signal samples corresponding to a desired transmit signal; provide the input signal samples to the shaping table; determine an upcoming communication event; respond to the upcoming communication event by determining a modification to the shaping table for handling the upcoming communication event; and apply the modification to the shaping table in preparation for the upcoming communication event. ### Claim 19 (depends on 18) The system of claim 18, where the baseband controller is further operable to: determine an output power for driving the transmit antenna; and determine the modification responsive to the output power. ### Claim 20 (depends on 18) The system of claim 18, where the baseband controller is operable to determine the upcoming communication event by: receiving a power control message from a network controller, the power control message comprising: a commanded output power at which to drive the transmit antenna; and a communication subframe at which the commanded output power is required; and where the baseband controller is further operable to determine the modification by: searching a library of shaping tables to locate a shaping table data set applicable to the commanded output power for the communication subframe; and apply the modification by loading the shaping table data set into the shaping table.