# US 2014/0155116 A1 · Dynamic Operating Bandwidth Configuration for an Envelope Tracker > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0155116 A1 - Document ID: US20140155116A1 - Status: Published application - Kind: A1 - Application number: 13/922,836 - Filed: 2013-06-20 - Published: 2014-06-05 - Earliest claimed: 2012-12-03 - Assignees: Broadcom Corporation - Applicants: Broadcom Corporation - Inventors: Sriraman Dakshinamurthy; Robert Gustav Lorenz - Web page: https://patentgrep.com/patent/US20140155116A1 ## CPC - H04W 52/0251: {using monitoring of local events, e.g. events related to user activity} - H04W 52/0261: {managing power supply demand, e.g. depending on battery level} - 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 operational parameters from a network controller. The operational parameters may include, as examples, bandwidth allocation, center frequency, and receive/transmit band assignments. The operational parameters (e.g., bandwidth allocation) may change on a subframe by subframe basis. In response to the operational parameters, the communication device determines a new configuration for an envelope tracking (ET) power supply. The communication device modifies the ET power supply to implement the new configuration. The new configuration may be chosen to adapt the ET power supply to meet the demands of the operation parameters, without excess power consumption. ## Claims ### Claim 1 A system comprising: a memory operable to store: a first power supply configuration; and a second power supply configuration; a power supply communication interface; and a controller in communication with the memory and the power supply communication interface, the controller operable to: determine a performance requirement for the system for communicating information; determine, responsive to the performance requirement, a selected power supply configuration from the first power supply configuration and the second power supply configuration; and communicate the selected power supply configuration over the power supply communication interface. ### Claim 2 (depends on 1) The system of claim 1, where the performance requirement comprises: a transmit channel bandwidth; and where the controller is operable to determine the selected power supply configuration by: determining which of the first power supply configuration and the second power supply configuration is most energy efficient. ### Claim 3 (depends on 1) The system of claim 1, where the power supply communication interface comprises: an envelope tracking power supply communication interface. ### Claim 4 (depends on 3) The system of claim 3, where the selected power supply configuration comprises a switching frequency specifier. ### Claim 5 (depends on 1) The system of claim 1, where the selected power supply configuration comprises operating parameters for an envelope tracking power supply. ### Claim 6 (depends on 5) The system of claim 5, where the performance requirement comprises a bandwidth allocation, and where: the operating parameters are operable to cause the envelope tracking power supply to operate as a function of the bandwidth allocation. ### Claim 7 (depends on 5) The system of claim 5, where the performance requirement comprises a bandwidth allocation, and where: the operating parameters are operable to cause the envelope tracking power supply to operate as a function of: the bandwidth allocation; and a relationship of the bandwidth allocation to a receive band. ### Claim 8 (depends on 7) The system of claim 7, where the: the bandwidth allocation comprises a transmit band; the receive band comprises a public safety band; and the relationship comprises proximity of the transmit band to the receive band. ### Claim 9 (depends on 8) The system of claim 8, where the operating parameters are further operable to cause the envelope tracking power supply to provide excess capability for transmissions in the transmit band. ### Claim 10 (depends on 1) The system of claim 1, where the controller is operable to determine the performance requirement by: receiving an operating parameter from a network controller over a control channel. ### Claim 11 (depends on 10) The system of claim 10, where the operating parameter comprises: a bandwidth allocation for the system. ### Claim 12 A method comprising: in user equipment: transmitting first information according to a selected communication standard; determining a new transmit operating parameter for subsequently transmitting second information; in response to the new transmit operating parameter, determining a power supply configuration modification; and implementing the power supply configuration modification prior to transmitting the second information. ### Claim 13 (depends on 12) The method of claim 12, where determining the new transmit operating parameter comprises: determining a transmit bandwidth. ### Claim 14 (depends on 12) The method of claim 12, where determining the new transmit operating parameter comprises: determining a transmit band; and further comprising: determining proximity of the transmit band to a receive band; and when the proximity is less than a proximity threshold, determining the power supply configuration modification to provide excess capability for transmissions in the transmit band. ### Claim 15 (depends on 14) The method of claim 14, where determining proximity of the transmit band to the receive band comprises: determining proximity of the transmit band to public safety receive band. ### Claim 16 (depends on 14) The method of claim 14, where determining proximity of the transmit band to the receive band comprises: determining proximity of the transmit band to a receive band allocated to the user equipment. ### Claim 17 (depends on 12) The method of claim 12, where: transmitting first information comprises transmitting first information in a current subframe of a larger communication frame according to the selected communication standard; and where: determining the new transmit operating parameter comprises: determining a transmit bandwidth applicable for a subsequent communication subframe that follows the current subframe. ### Claim 18 (depends on 12) The method of claim 12, where determining a power supply configuration modification comprises: determining an envelope tracking power supply configuration modification. ### Claim 19 A system comprising: a baseband controller; a memory comprising a power supply configuration parameter library; an envelope tracking power supply operable to: receive envelope tracking signals; and output a power supply voltage signal that approximates the signal envelope; a power amplifier operable to receive the power supply voltage signal and drive an antenna with a transmit signal characterized by a current bandwidth; where: the baseband controller is operable to: receive through the antenna a bandwidth allocation message from a network controller; determine a new bandwidth at which to transmit through the antenna from the bandwidth allocation message; search the power supply configuration parameter library for a power supply configuration that increases efficiency at the new bandwidth; program the envelope tracking power supply with the power supply configuration; and transmit at the new bandwidth after programming the envelope tracking power supply. ### Claim 20 (depends on 19) The system of claim 19, where the power supply configuration comprises a switching frequency operating parameter for the envelope tracking power supply.