# US 11,115,134 B2 · Test method implemented by an apparatus comprising at least two radio communication devices > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,115,134 B2 - Document ID: US11115134B2 - Status: Granted - Kind: B2 - Application number: 15/537,137 - Filed: 2015-12-15 - Published: 2018-09-20 - Granted: 2021-09-07 - Earliest claimed: 2014-12-17 - Assignees: Sagemcom Broadband SAS - Applicants: Sagemcom Broadband SAS - Inventors: Jean-Philippe Jaulin; Nicolas Dangy-Caye - Web page: https://patentgrep.com/patent/US11115134B2 ## CPC - H04B 17/0085: {using test signal generators} - H04B 1/406: {with more than one transmission mode, e.g. analog and digital modes} - H04B 17/15: Performance testing - H04B 17/19: Self-testing arrangements - H04B 17/29: Performance testing - H04W 24/06: Testing, {supervising or monitoring} using simulated traffic - H04W 72/02: Selection of wireless resources by user or terminal - H04B: TRANSMISSION - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract The present invention relates to a test method implemented by an item of equipment (10) comprising at least two radio-communication devices (12, 13) for testing at least one transmitter and receiver of said radio-communication devices. According to the invention, it comprises the following steps implemented for testing a transmitter (120) to be tested of a transmitting radio-communication device (12) and/or a receiver (131) to be tested of a receiving radio-communication device (13) of the same item of equipment (10), a step (E100) of transmitting a test signal in a transmission channel of said transmitter (120) of said transmitting radio-communication device (12), and a step (E200) of detection, in a reception channel corresponding to said transmission channel of said transmitter (120), of the test signal transmitted. ## Claims ### Claim 1 A method for testing a communication device comprising a controller and at least two radio-communication devices disposed in the communication device and coupled to the controller, each of said at least two radio-communication devices including a transmitter and a receiver, wherein a first radio-communication device of the at least two radio-communication devices uses a first communication protocol and a second radio-communication device of the at least two radio-communication devices uses a second communication protocol different from the first communication protocol and said at least two radio-communication devices share the same frequency band, the method comprising: transmitting, by a transmitter to be tested of the first radio-communication device of the at least two radio-communication devices and configured to use the first communication protocol, a test signal in a transmission channel of the first radio-communication device of the at least two radio-communication devices, wherein the test signal is signed in the form of a sequence of predetermined time and/or frequency bits and/or transmitted power levels that the receiver can distinguish from transmission schemes that surrounding transmitters are likely to use, and detecting, by the receiver to be tested of the second radio-communication device and configured to use the second communication protocol, the test signal in a reception channel of the second radio-communication device of the at least two radio-communication devices, wherein a frequency range of the transmission channel overlaps with a frequency range of the reception channel, and wherein the detecting includes noting triggering, by said receiver of the second radio-communication device, of an event caused by presence of said test signal in the reception channel, the event including a channel in operation of the second radio-communication device or presence of an error message. ### Claim 2 (depends on 1) The test method according to claim 1, wherein the event including the change in the operation of the second radio-communication device and noting the triggering of the event includes detecting a change in a working channel used by the second radio-communication device from the reception channel to another channel of the second radio-communication device after the transmission of the test signal. ### Claim 3 (depends on 1) The test method according to claim 1, wherein the detecting comprises: measuring a radio-field level in the reception channel for an interval of time corresponding to an interval of time that the test signal is transmitted in the transmission channel, and comparing the radio-field level with a predetermined target level. ### Claim 4 (depends on 1) The test method according to claim 1, further comprising selecting at a plurality of transmission channels for the first radio-communication device of the at least two radio-communication devices, configuring the first radio-communication device of the at least two radio-communication devices to transmit said test signal in the transmission channels selected and configuring the second radio-communication device of the at least two radio-communication devices to detect said test signal in a plurality of reception channels corresponding to the transmission channels selected. ### Claim 5 (depends on 4) The test method according to claim 4, wherein the selecting includes arbitrarily choosing said transmission channels. ### Claim 6 (depends on 4) The test method according to claim 4 wherein the selecting includes choosing, from all transmission channels supported by the first radio-communication device, the most calm transmission channel or channels. ### Claim 7 (depends on 1) The test method according to claim 1, wherein the test signal is signed in the form of the sequence of predetermined time bits and/or the sequence of predetermined frequency bits, and the detecting is performed for each bit in said sequence of said test signal, said method comprising verifying validity of each bit and verifying validity of all bits of the test signal. ### Claim 8 (depends on 7) The test method according to claim 7, further comprising verifying presence of a measurable radio field at an input of said receiver. ### Claim 9 (depends on 1) The test method according to claim 1, wherein the test signal is signed according to a deterministic scheme known to the second radio-communication device. ### Claim 10 (depends on 1) The test method according to claim 1, wherein the test signal is signed in the form of the sequence of predetermined time bits and said method further comprising: determining validity of all bits of the test signal detected by the receiver to be tested of the second radio-communication device; and upon all the bits of the test signal not being validated, (1) changing characteristics of the test signal to provide a second test signal, (2) transmitting, by the transmitter to be tested of the first radio-communication device, the second test signal in the transmission channel of the first radio-communication device, and (3) detecting, by the receiver to be tested of the second radio-communication device, the second test signal in the reception channel of the second radio-communication device. ### Claim 11 (depends on 1) The test method according to claim 1, wherein the event includes presence of the error message and the error message includes a stuck beacon message. ### Claim 12 (depends on 1) The test method according to claim 1, wherein the event includes the change in the operation of the second radio-communication device and the change in the operation includes detecting introduction of a new channel while the test signal is transmitted by the transmitter to be tested of the first radio-communication device. ### Claim 13 A non-transitory computer readable memory comprising instructions that, when executed by a communication device comprising a controller and at least two radio-communication devices disposed in the communication device and coupled to the controller, each of said at least two radio-communication devices including a transmitter and a receiver, wherein a first radio-communication device of the at least two radio-communication devices uses a first communication protocol and a second radio-communication device of the at least two radio-communication devices uses a second communication protocol different from the first communication protocol and said at least two radio-communication devices share the same frequency band, cause the communication device to: transmit, by a transmitter to be tested of the first radio-communication device of the at least two radio-communication devices and configured to use the first communication protocol, a test signal in a transmission channel of the first radio-communication device of the at least two radio-communication devices, wherein the test signal is signed in the form of a sequence of predetermined time and/or frequency bits and/or transmitted power levels that the receiver can distinguish from transmission schemes that surrounding transmitters are likely to use, and detect, by the receiver to be tested of the second radio-communication device and configured to use the second communication protocol, the test signal in a reception channel of the second radio-communication device of a second of the at least two radio-communication devices, wherein a frequency range of the transmission channel overlaps with a frequency range of the reception channel, and wherein the detecting includes noting triggering, by said receiver of the second radio-communication device, of an event caused by presence of said test signal in the reception channel, the event including a change in operation of the second radio-communication device or presence of an error message. ### Claim 14 A communication device comprising: a controller including circuitry; and at least two radio-communication devices disposed in the communication device and coupled to the controller, each of said at least two radio-communication devices including a transmitter and a receiver, wherein a first radio-communication device of the at least two radio-communication devices uses a first communication protocol and a second radio-communication device of the at least two radio-communication devices uses a second communication protocol different from the first communication protocol and said at least two radio-communication devices share the same frequency band, wherein the controller is adapted for: transmitting, by a transmitter to be tested of the first radio-communication device of the at least two radio-communication devices and configured to use the first communication protocol, a test signal in a transmission channel of the first radio-communication device of the at least two radio-communication devices, wherein the test signal is signed in the form of a sequence of predetermined time and/or frequency bits and/or transmitted power levels that the receiver can distinguish from transmission schemes that surrounding transmitters are likely to use, and detecting, by the receiver to be tested of the second radio-communication device and configured to use the second communication protocol, the test signal in a reception channel of the second radio-communication device of the at least two radio-communication devices, wherein a frequency range of the transmission channel overlaps with a frequency range of the reception channel, and wherein the detecting includes noting triggering, by said receiver of the second radio-communication device, of an event caused by presence of said test signal in the reception channel, the event including a change in operation of the second radio-communication device or presence of an error message.