# US 2014/0192692 A1 · Power Saving for a Communication Device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0192692 A1 - Document ID: US20140192692A1 - Status: Published application - Kind: A1 - Application number: 13/736,924 - Filed: 2013-01-08 - Published: 2014-07-10 - Earliest claimed: 2013-01-08 - Assignees: Cambridge Silicon Radio Limited - Inventors: Jeremy Stark; Jonathan Tyson Williams; Peter Collins; Peter Andrew Rees Williams; Nick Jones - Web page: https://patentgrep.com/patent/US20140192692A1 ## CPC - H04W 52/0209: {in terminal devices} - H04B 1/406: {with more than one transmission mode, e.g. analog and digital modes} - 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 A communication device comprising: a first radio capable of communicating according to a first protocol and having a set of operational modes; and a second radio capable of communicating according to a second protocol, the communication device being configured to, in dependence on one or more communications by the second radio in accordance with the second protocol, selecting one mode of operation for the first radio from the set of operational modes, wherein said one or more communications comprises: sending a first message; and a response or non-response to the first message. ## Claims ### Claim 1 A communication device comprising: a first radio capable of communicating according to a first protocol and having a set of operational modes; and a second radio capable of communicating according to a second protocol, the communication device being configured to, in dependence on one or more communications by the second radio in accordance with the second protocol, selecting one mode of operation for the first radio from the set of operational modes, wherein said one or more communications comprises: sending a first message; and a response or non-response to the first message. ### Claim 2 (depends on 1) The communication device according to claim 1, said communications comprising: receiving a second message indicating a capability of communications according to the first protocol. ### Claim 3 (depends on 2) The communication device according to claim 2, said second message comprising an identifier of a radio capable of communicating according to the first protocol. ### Claim 4 (depends on 1) The communication device of claim 1, the communication device being configured to select, dependent on said second message, another radio capable of communicating according to the first protocol and establish a connection between the first radio and said selected radio. ### Claim 5 (depends on 4) The communication device of claim 4, the communication device being configured to disable transmission and reception of communications by the first radio when the first radio is unable to connect to said selected radio. ### Claim 6 (depends on 1) The communication device of claim 1, the communication device being configured to periodically send said first message. ### Claim 7 (depends on 1) The communication device of claim 1, the plurality of operational modes comprises: an enabled mode configured to enable the transmission and reception of communications according to the first protocol; and a disabled mode configured to disable the transmission and reception of communications according to the first protocol. ### Claim 8 (depends on 7) The communication device of claim 7, the plurality of operational modes further comprising at least on more of: a standby mode configured to disable the transmission and reception of communications according to the first protocol, the first radio being such that it consumes more power in the standby mode than in the disabled mode; a listening mode configured to disable the transmission of communications according to the first protocol and enable the reception of communications according to the first protocol; and a power saving mode configured to disable the transmission and/or reception of communications according to the first protocol for a predetermined length of time. ### Claim 9 (depends on 1) The communication device of claim 1, the communication device being configured to disable transmission and reception of communications by the first radio when the second radio is unable to connect to another radio in accordance with the second protocol. ### Claim 10 (depends on 1) The communication device of claim 1, the first radio being operable to perform wireless signalling at a first set of frequencies and the second radio being operable to perform wireless signalling at a second set of frequencies. ### Claim 11 (depends on 1) The communications device of claim 1, wherein the first and second radios coexist at a single device. ### Claim 12 (depends on 1) The communications device of claim 1, wherein the first radio supports IEEE 802.11 communications. ### Claim 13 (depends on 1) The communications device of claim 1, wherein the second radio supports Bluetooth communications. ### Claim 14 (depends on 1) The communications device of claim 1, the communications by the first radio being such as to consume more power than communications by the second radio. ### Claim 15 (depends on 1) The communications device of claim 1, the first radio being capable of data transfer at rate greater than the rate of data transfer capable by the second radio. ### Claim 16 (depends on 1) The communications device of claim 1 further configured to: determine a capability of communications according to the first protocol via the first radio; and send a second message indicating said determined capability via the second radio. ### Claim 17 The communications device of claim of 16 further configured to: enable the first radio so as to enable said capability determination; and in dependence of a threshold value, disable the first radio so as to disable said capability determination. ### Claim 18 (depends on 1) A communications network comprising: a first communications device according to the communication device of claim 1; a second communications device capable of communicating according to the first and second protocols; and a third communications device capable of communicating according to the first protocol, the second communications device being configured to: receive the first message; and in dependence of communications with the third communications device, send a second message indicating a capability of communications according to the first protocol to the first communications device. ### Claim 19 A method of selecting a mode of operation from a plurality of operational modes for a first radio of a first communications device, the first radio being capable of communicating according to a first protocol and the first communications device comprising a second radio capable of communicating according to a second protocol, the method comprising the steps of: the second radio sending a first message; and in dependence on a response or non-response to the first message, determining a mode of operation of the first radio. ### Claim 20 (depends on 19) The method of claim 19, further comprising the steps of, at a second communications device: receiving the first message; determining a capability of communications according to the first protocol; and sending a second message indicating a capability of communications according to the first protocol.