# US 8,787,558 B2 · Low complexity, optimized power management scheme for very high speed digital subscriber line transceivers 2

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- Number: US 8,787,558 B2
- Document ID: US8787558B2
- Status: Granted
- Kind: B2
- Application number: 13/566,607
- Filed: 2012-08-03
- Published: 2013-02-07
- Granted: 2014-07-22
- Earliest claimed: 2011-08-05
- Assignees: Futurewei Technologies, Inc.
- Applicants: Sanjay Gupta
- Inventors: Sanjay Gupta
- Web page: https://patentgrep.com/patent/US8787558B2

## CPC

- H04M 11/062: {using different frequency bands for speech and other data}
- Y02D 30/50: in wire-line communication networks, e.g. low power modes or reduced link rate
- H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08)
- 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

An apparatus comprising a processor configured to determine a power management (PM) state from a plurality of PM states for a digital subscriber line (DSL) transceiver, wherein the plurality of PM states comprise a idle state, a full on state, and a low power state, wherein the full on state consumes more power than the low power state, wherein the low power state consumes more power than the idle state, wherein the low power state comprises at least one PM profile, and wherein the DSL transceiver supports a very high speed digital subscriber line 2 (VDSL2) data transmission protocol, and instruct the DSL transceiver to use the PM state.

## Claims

### Claim 1

An apparatus comprising:
a processor configured to:
determine a power management (PM) state from a plurality of PM states for a digital subscriber line (DSL) transceiver, wherein the plurality of PM states comprise an idle state, a full on state, and a low power state, wherein the full on state consumes more power than the low power state, wherein the low power state consumes more power than the idle state, and wherein the DSL transceiver supports a very high speed digital subscriber line 2 (VDSL2) data transmission protocol;
instruct the DSL transceiver to use the PM state; and
instruct the DSL transceiver to transition from a first PM profile corresponding to the PM state to a second PM profile corresponding to the PM state using a PM command that comprises a profile index that identifies the second PM profile.

### Claim 2 (depends on 1)

The apparatus of claim 1, wherein the low power state comprises at least two low power PM profiles, wherein each of the at least two lower power PM profiles comprises a plurality of parameters, and wherein at least one of the plurality of the parameters is different for each PM profile.

### Claim 3 (depends on 2)

The apparatus of claim 2, wherein the plurality of parameters include physical media dependent (PMD) and physical media specific (PMS) control parameters, and wherein one of the lower power PM profile is a default profile.

### Claim 4 (depends on 1)

The apparatus of claim 1, wherein the processor is further configured to: transition the DSL transceiver from the PM state to a second PM state of the plurality of PM states and wherein the second PM is stored locally within the DSL transceiver.

### Claim 5

An apparatus comprising:
processor configured to:
determine a power management (PM) state from a plurality of PM states for a digital subscriber line (DSL) transceiver, wherein the plurality of PM states comprise an idle state, a full on state, and a low power state, wherein the full on state consumes more power than the low power state, wherein the low power state consumes more power than the idle state, wherein the low power state comprises at least two PM profile, wherein the DSL transceiver supports a very high speed digital subscriber line 2 (VDSL2) data transmission protocol; and
instruct the DSL transceiver to use the PM state; and
transition the DSL transceiver from the PM state to a second PM state of the plurality of PM states,
wherein the full on state comprises a full on PM profile,
wherein each of the at least two PM profiles and the full on PM profile comprises one profile index,
wherein transitioning the DSL transceiver from the PM state to the second PM state uses a PM command, and
wherein the PM command comprises a profile index of the second PM state.

### Claim 6 (depends on 5)

The apparatus of claim 5, wherein the PM state is the low power state, wherein the low power state comprises a first PM profile and a second PM profile, and wherein the processor is further configured to transition the DSL transceiver from the first PM profile to the second PM profile.

### Claim 7 (depends on 6)

The apparatus of claim 6, wherein the first and second PM profiles are upstream profiles.

### Claim 8 (depends on 6)

The apparatus of claim 6, wherein transitioning the DSL transceiver from the first PM profile to the second PM profile uses a second PM command, and wherein the second PM command comprises a profile index of the second PM profile.

### Claim 9 (depends on 8)

The apparatus of claim 8, wherein each profile index comprises a first position and a second position, wherein the first position is configured to store an index of a downstream profile, and wherein the second position is configured to store an index of an upstream profile.

### Claim 10 (depends on 8)

The apparatus of claim 8, wherein the PM command and the second PM command are selectable from a plurality of PM commands, and wherein the plurality of PM commands comprises a Type 1 command, a Type 2 command, a Type 3 command, a Type 4 command, and a Type 5 command.

### Claim 11 (depends on 10)

The apparatus of claim 10, wherein each of the plurality of PM commands comprises at least one tone group parameter field, wherein each of the at least one tone group parameter field identifies a tone group, and wherein the tone group represents a set of sub-carriers.

### Claim 12 (depends on 11)

The apparatus of claim 11, wherein the set of sub-carriers includes a starting sub-carrier with a first index and an ending sub-carrier with a second index, and wherein the tone group is identified by the first and second indices.

### Claim 13 (depends on 11)

The apparatus of claim 11, wherein each of the set of sub-carriers has an equal number of bits and gains.

### Claim 14 (depends on 11)

The apparatus of claim 11, wherein the at least one tone group parameter field identifies at least one tone group, and wherein a maximum number of the at least one tone group is 128.

### Claim 15 (depends on 5)

The apparatus of claim 5, wherein the processor is further configured to use an online reconfiguration (OLR) command to perform an OLR procedure on the DSL transceiver.

### Claim 16 (depends on 15)

The apparatus of claim 15, wherein the OLR procedures fulfills one of a plurality of OLR types, and wherein the plurality of OLR types include bit swapping (BS), seamless rate adaptation (SRA), and save our showtime (SOS).

### Claim 17 (depends on 15)

The apparatus of claim 15, wherein the OLR command is a Request Type 5 fulfilling a bit swapping (BS).

### Claim 18 (depends on 5)

The apparatus of claim 5, wherein the DSL transceiver is a VDSL2 transceiver unit (VTU) at an optical network unit (VTU-O).

### Claim 19 (depends on 15)

The apparatus of claim 15, wherein the OLR command is a Request Type 6 fulfilling a seamless rate adaptation (SRA).

### Claim 20 (depends on 15)

The apparatus of claim 15, wherein the OLR command is a Request Type 7 fulfilling a save our showtime (SOS).

### Claim 21

A method comprising:
determining a power management (PM) state from a plurality of PM states for a digital subscriber line (DSL) transceiver, wherein the plurality of PM states comprise an idle state, a full on state, and a low power state, wherein the full on state consumes more power than the low power state, wherein the low power state consumes more power than the idle state, and wherein the DSL transceiver supports a very high speed digital subscriber line 2 (VDSL2) data transmission protocol;
instructing the DSL transceiver to use the PM state; and
instructing the DSL transceiver to transition from a first PM profile within the PM state to a second PM profile within the PM state using a PM command that comprises a profile index that identifies the second PM profile.

### Claim 22 (depends on 21)

The method of claim 21, wherein the low power state comprises at least two low power PM profiles, wherein each of the at least two low power PM profiles comprises a plurality of parameters, and wherein at least one of the plurality of the parameters is different for each PM profile.

### Claim 23 (depends on 22)

The method of claim 22, wherein the plurality of parameters include physical media dependent (PMD) and physical media specific (PMS) control parameters, and wherein one of the lower power PM profiles is designated as a default profile.

### Claim 24 (depends on 21)

The method of claim 21, further comprising transitioning the DSL transceiver from the PM state to a second PM state of the plurality of PM states, wherein the second PM profile is stored locally within the DSL transceiver.

### Claim 25

A method comprising;
determining a power (PM) state from a plurality of PM states for a digital subscriber line (DSL) transceiver, wherein the plurality of PM states comprise an idle state, a full on state, and a low power state, wherein the full on state consumes more power than the low power state, wherein the low power state consumes more power than the idle state, wherein the low power state comprises at least two PM profiles, and wherein the DSL transceiver supports a very high speed digital subscriber line 2 (VDSL2) data transmission protocol;
instructing the DSL transceiver to use the PM state; and
transitioning the DSL transceiver from the PM state to a second PM state of the plurality of PM states,
wherein the full on state comprises a full on PM profile,
wherein each of the at least two PM profiles and the full on PM profile comprises one profile index,
wherein transitioning the DSL transceiver from the PM state to the second PM state uses a PM command, and
wherein the PM command comprises a profile index of the second PM state.

### Claim 26 (depends on 25)

The method of claim 25, wherein the PM state is the low power state, wherein the low power state comprises a first PM profile and a second PM profile, and wherein the method further comprises transitioning the DSL transceiver from the first PM profile to the second PM profile.

### Claim 27 (depends on 26)

The method of claim 26, wherein the first and second PM profiles are upstream profiles.

### Claim 28 (depends on 26)

The method of claim 26, wherein transitioning the DSL transceiver from the first PM profile to the second PM profile uses a second PM command, and wherein the second PM command comprises a profile index of the second PM profile.

### Claim 29 (depends on 28)

The method of claim 28, wherein each profile index comprises a first position and a second position, wherein the first position is configured to store an index of a downstream profile, and wherein the second position is configured to store an index of an upstream profile.

### Claim 30 (depends on 28)

The method of claim 28, wherein the PM command and the second PM command are selectable from a plurality of PM commands, and wherein the plurality of PM commands comprises a Type 1 command, a Type 2 command, a Type 3 command, a Type 4 command, and a Type 5 command.

### Claim 31 (depends on 30)

The method of claim 30, wherein each of the plurality of PM commands comprises at least one tone group parameter field, wherein each of the at least one tone group parameter field identifies a tone group, and wherein the tone group represents a set of sub-carriers.

### Claim 32 (depends on 31)

The method of claim 31, wherein the set of sub-carriers includes a starting sub-carrier with a first index and an ending sub-carrier with a second index, and wherein the tone group is identified by the first and second indices.

### Claim 33 (depends on 31)

The method of claim 31, wherein each of the set of sub-carriers has an equal number of bits and gains.

### Claim 34 (depends on 31)

The method of claim 31, wherein the at least one tone group parameter field identifies at least one tone group, and wherein a maximum number of the at least one tone group is 128.

### Claim 35 (depends on 25)

The method of claim 25, further comprising using an online reconfiguration (OLR) command to perform an OLR procedure on the DSL transceiver.

### Claim 36 (depends on 35)

The method of claim 35, wherein the OLR procedures fulfills one of a plurality of OLR types, and wherein the plurality of OLR types include bit swapping (BS), seamless rate adaptation (SRA), and save our showtime (SOS).

### Claim 37 (depends on 35)

The method of claim 35, wherein the OLR command is a Request Type 5 fulfilling a bit swapping (BS).

### Claim 38 (depends on 25)

The method of claim 25, wherein the DSL transceiver is a VDSL2 transceiver unit (VTU) at an optical network unit (VTU-O).

### Claim 39 (depends on 35)

The method of claim 35, wherein the OLR command is a Request Type 6 fulfilling a seamless rate adaptation (SRA).

### Claim 40 (depends on 35)

The method of claim 35, wherein the OLR command is a Request Type 7 fulfilling a save our showtime (SOS).

### Claim 41

An apparatus comprising:
a digital subscriber line (DSL) transceiver configured to:
receive a power management (PM) command comprising information regarding a PM state, wherein the PM state is selectable from a plurality of available PM states, wherein the plurality of available PM states comprise a full on state, a low power state, and an idle state, wherein the full on state consumes more power than the low power state, wherein the low power state consumes more power than the idle state, wherein the DSL transceiver supports a very high speed digital subscriber line 2 (VDSL2) data transmission protocol;
transition to the PM state based on the PM command, wherein a plurality of PM profiles are associated with the PM state; and
transition, within the PM state, from a first PM profile of the PM profiles to a second PM profile of the PM profiles based on a second PM command that comprises a profile index that identifies the second PM profile.

### Claim 42

An apparatus comprising:
a digital subscriber line (DSL) transceiver configured to:
receive a power management (PM) command comprising information regarding a PM state, wherein the PM state is selectable from a plurality of available PM states, wherein the plurality of available PM states comprise a full on state, a low power state, and an idle state, wherein the full on state consumes more power than the low power state, wherein the low power state consumes more power than the idle state, wherein the low power state comprises at least two PM profiles, wherein the DSL transceiver supports a very high speed digital subscriber line 2 (VDSL2) data transmission protocol; and
transition to the PM state based on the PM command,
wherein the full on state comprises a full on PM profile,
wherein each of the at least two PM profiles and the full on PM profile comprises one profile index, and
wherein the PM command comprises a profile index of the PM state.

### Claim 43 (depends on 42)

The apparatus of claim 42, wherein the PM command is a Type 1 command, a Type 2 command, a Type 3 command, a Type 4 command, or a Type 5 command.

### Claim 44 (depends on 41)

The apparatus of claim 41, wherein the PM command comprises at least one tone group parameter field, wherein each of the at least one tone group parameter field identifies a tone group, wherein the tone group represents a set of sub-carriers, wherein the set of sub-carriers includes a starting sub-carrier with a first index and an ending sub-carrier with a second index, and wherein each of the set of sub-carriers has an equal number of bits and gains.

### Claim 45 (depends on 41)

The apparatus of claim 41, wherein the processor is further configured to use an online reconfiguration (OLR) command to perform an OLR procedure on the DSL transceiver, wherein the OLR command is a Request Type 5 fulfilling bit swapping (BS), or a Request Type 6 fulfilling seamless rate adaptation (SRA), or a Request Type 7 fulfilling save our showtime (SOS).