Systems and methods for establishing a diagnostic transmission mode and communicating over the same
First Claim
1. A device operable to transmit channel measurement information, comprising:
- a multicarrier transceiver operable to transmit, during user data transmission or reception and using multicarrier modulation, a message that includes the channel measurement information and to modulate bits in the message using Quadrature Amplitude Modulation (QAM) or another modulation technique,wherein the channel information part of the message comprises information indicative of a plurality of signal-to-noise ratios determined during the user data transmission or reception, each signal-to-noise ratio associated with one or more subchannels that comprise a wideband communication channel,wherein the multicarrier transceiver is further operable to retransmit a message with a subset of data in response to the message not being successfully received by a remote receiving device.
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Accused Products
Abstract
Upon detection of a trigger, such as the exceeding of an error threshold or the direction of a user, a diagnostic link system enters a diagnostic information transmission mode. This diagnostic information transmission mode allows for two modems to exchange diagnostic and/or test information that may not otherwise be exchangeable during normal communication. The diagnostic information transmission mode is initiated by transmitting an initiate diagnostic link mode message to a receiving modem accompanied by a cyclic redundancy check (CRC). The receiving modem determines, based on the CRC, if a robust communications channel is present. If a robust communications channel is present, the two modems can initiate exchange of the diagnostic and/or test information. Otherwise, the transmission power of the transmitting modem is increased and the initiate diagnostic link mode message re-transmitted to the receiving modem until the CRC is determined to be correct.
130 Citations
21 Claims
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1. A device operable to transmit channel measurement information, comprising:
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a multicarrier transceiver operable to transmit, during user data transmission or reception and using multicarrier modulation, a message that includes the channel measurement information and to modulate bits in the message using Quadrature Amplitude Modulation (QAM) or another modulation technique, wherein the channel information part of the message comprises information indicative of a plurality of signal-to-noise ratios determined during the user data transmission or reception, each signal-to-noise ratio associated with one or more subchannels that comprise a wideband communication channel, wherein the multicarrier transceiver is further operable to retransmit a message with a subset of data in response to the message not being successfully received by a remote receiving device. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A device operable to transmit channel measurement information, comprising:
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a multicarrier transceiver operable to transmit, during user data transmission or reception and using multicarrier modulation, a message that includes the channel measurement information and to modulate bits in the message using Quadrature Amplitude Modulation (QAM) or another modulation technique, wherein the channel information part of the message comprises information indicative of a plurality of signal-to-noise ratios determined during the user data transmission or reception, each signal-to-noise ratio associated with one or more subchannels that comprise a wideband communication channel, wherein the multicarrier transceiver is further operable to retransmit a message, wherein the message has a decreased length, in response to the message not being successfully received by a remote receiving device. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A device operable to transmit channel measurement information, comprising:
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a multicarrier transceiver operable to transmit, during user data transmission or reception and using multicarrier modulation, a message that includes the channel measurement information and to modulate bits in the message using Quadrature Amplitude Modulation (QAM) or another modulation technique, wherein the channel information part of the message comprises information indicative of a plurality of signal-to-noise ratios determined during the user data transmission or reception, each signal-to-noise ratio associated with one or more subchannels that comprise a wideband communication channel, wherein the multicarrier transceiver is further operable to retransmit a message with customized information in response to the message not being successfully received by a remote receiving device. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification