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US 2002/0165974 A1Published application
Mechanism to consolidate HPNA three network states into two network states
AssigneeAdvanced Micro Devices, Inc.
InventorsPeter Ka-Fai Chow, William Young
Life of this patent
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Abstract
The present invention provides a network state machine which supports the three network states of the Home Phone Line Networking Alliance specification version 2.0 (HPNA 2.0) using two network states has been disclosed. When a station is in the V1M2 mode, instead of transmitting this frame in the 10M8 format frame with the gap frame, the frame is transmitted in the 1M8 format frame without any gaps in the frame. With this, the three network state equations of HPNA 2.0 collapses into two equations. With only two network states, the complexity of the network state machine is reduced, and a Physical Layer (PHY) which supports only the two network states may be used.
Claims41
A network state machine for a home phone line network, comprising:
- a first signal, wherein asserting the first signal programs the network state machine for a first mode;
- a second signal, wherein asserting the second signal programs the network state machine for a second mode;
- and
- a third signal, wherein asserting the third signal programs the network state machine for a third mode,
- wherein an asserted second signal is substituted for an asserted first signal,
- wherein a network state is the second mode if the second signal is asserted,
- wherein the network state is the third mode if the network state is not the second mode.
4 more elements
A network state machine for a home phone line network, comprising:
- a first signal, wherein asserting the first signal programs the network state machine for a first mode;
- a second signal, wherein asserting the second signal programs the network state machine for a second mode;
- a third signal, wherein asserting the third signal programs the network state machine for a third mode;
- a fourth signal, wherein asserting the fourth signal indicates a detection of a frame in a second mode format with a PCOM set to “1” while a station is in the third mode and a Link Integrity Status is set to “DOWN”, or a detection of a frame in the second mode format with a PCOM set to “0”;
- and
- a fifth signal, wherein asserting the fifth signal indicates a detection or transmission of a frame in the second mode format with a PCOM set to “2”,
- wherein a network state is the second mode if the first signal or the second signal is asserted, or if the fourth signal or the fifth signal is asserted and the third signal is not asserted,
- wherein the network state is the third mode if the network state is not the second mode.
5 more elements
A network state machine for a home phone line network, comprising:
- a ConfigV1M2 signal, wherein asserting the ConfigV1M2 signal programs the network state machine for a V1M2 mode;
- a ConfigV1 signal, wherein asserting the ConfigV1 signal programs the network state machine for a 1M8 mode;
- a ConfigV2 signal, wherein asserting the ConfigV2 signal programs the network state machine for a 10M8 mode;
- a V1_DETECTED signal, wherein asserting the V1_DETECTED signal indicates a detection of a 1M8 format frame with a PCOM set to “1” while a station is in the 10M8 mode and a Link Integrity Status is set to “DOWN”, or a detection of a 1M8 format fame with a PCOM set to “0”;
- and
- a V1_SIGNALED signal, wherein asserting the V1_SIGNALED signal indicates a detection or transmission of a 1M8 format frame and with a PCOM set to “2”,
- wherein a network state is the 1M8 mode if the ConfigV1M2 signal or the ConfigV1 signal is asserted, or if the V1_DETECTED signal or the V1_SIGNALED signal is asserted and the ConfigV2 signal is not asserted,
- wherein the network state is the 10M8 mode if the network state is not the 1M8 mode.
5 more elements
A method for supporting three network states under HPNA 2.0 using two network states, comprising the steps of:
- (a) determining if a first signal, a second signal, or a third signal is asserted, wherein an asserted first signal programs a network state machine for a first mode, wherein an asserted second signal programs the network state machine for a second mode, and wherein an asserted third signal programs the network state machine for a third mode;
- (b) substituting an asserted second signal for an asserted first signal;
- (c) setting a network state to the second mode if the second signal is asserted;
- and
- (d) setting the network state to the third mode if the network state is not the second mode.
2 more elements
A method for supporting three network states under HPNA 2.0 using two network states, comprising the steps of:
- (a) determining if a first signal, a second signal, or a third signal is asserted, wherein an asserted first signal programs a network state machine for a first mode, wherein an asserted second signal programs the network state machine for a second mode, and wherein an asserted third signal programs the network state machine for a third mode;
- (b) determining if a fourth signal or a fifth signal is asserted, wherein an asserted fourth signal indicates a detection of a frame in a second mode format with a PCOM set to “1” while a station is in the third mode and a Link Integrity Status is set to “DOWN”, or a detection of a frame in the second mode with a PCOM set to “0”, wherein an asserted fifth signal indicates a detection or transmission of a frame in the second mode format with a PCOM set to “2”;
- (c) setting a network state to the second mode if the first signal or the second signal is asserted, or if the fourth signal or the fifth signal is asserted and the third signal is not asserted;
- and
- (d) setting the network state to the third mode if the network state is not the second mode.
2 more elements
A method for supporting three network states under HPNA 2.0 using two network states, comprising the steps of:
- (a) determining if a ConfigV1M2 signal, a ConfigV1 signal, or a ConfigV2 signal is asserted, wherein an asserted ConfigV1M2 signal programs a network state machine for a V1M2 mode, wherein an asserted ConfigV1signal programs the network state machine for a 1M8 mode, and wherein an asserted ConfigV2 signal programs the network state machine for a 10M8 mode;
- (b) determining if a V1_DETECTED signal or a V1_SIGNALED signal is asserted, wherein an asserted V1_DETECTED signal indicates a detection of a frame in a 1M8 frame format with a PCOM set to “1” while a station is in the 10M8 mode and a Link Integrity Status is set to “DOWN”, or a detection of a 1M8 frame with a PCOM set to “0”, wherein an asserted V1_SIGNALED indicates a detection or transmission of a 1M8 format frame with a PCOM set to “2”;
- (c) setting a network state to the 1M8 mode if the ConfigV1M2 signal or the ConfigV1 signal is asserted, or if the V1_DETECTED signal or the V1_SIGNALED signal is asserted and the ConfigV2 signal is not asserted;
- and
- (d) setting the network state to the 10M8 mode if the network state is not the 1M8 mode.
2 more elements
Dependencies are inferred from the claim text.