1. A method of data communications for a transmitter in a millimeter wave network, comprising:
generating a control physical layer (CPHY) preamble;
generating a header, wherein the header comprises a mode indicator, and the mode indicator is defined by setting reserved bits in the header;
modulating and encoding a payload according to the mode indicator;
generating a packet according to the control physical layer (CPHY) preamble, the header and the payload; and
transmitting the packet by the transmitter.
2. The method of claim 1, wherein the mode indicator indicates an original CPHY mode, or a modulation coding scheme (MCS) mode for modulating the payload.
3. The method of claim 1, wherein the mode indicator indicates the reserved bits are reserved.
4. The method of claim 1, wherein the CPHY preamble is an IEEE 802.11ad CPHY preamble.
5. A method for data communications for a receiver in a millimeter wave network, comprising:
receiving a packet;
determining a type of the packet;
determining a mode of the packet; and
demodulating and decoding the packet according to the mode of the packet,
wherein demodulating and decoding the packet according to a DPHY mode, if the type of the packet is DPHY; and
wherein determining an MCS mode of the packet, if the type of the packet is CPHY.
6. The method of claim 5, wherein the mode is defined by setting reserved bits of a CPHY header.
7. The method of claim 6, wherein the mode indicates an original CPHY mode, or an MCS mode for demodulating the payload.
8. The method of claim 6, wherein the mode indicates the reserved bits are reserved.
9. The method of claim 6, further comprising extracting a CPHY preamble from the receiver packet, wherein the CPHY preamble is an IEEE 802.11ad CPHY preamble.
10. A transmitter in a millimeter wave network, comprising:
a preamble generator, configured to generate a control physical layer (CPHY) preamble;
a header generator, configured to generate a header, wherein the header comprises a mode indicator, and the mode indicator is defined by setting reserved bits in the header; and
a payload generator, modulating and encoding a payload according to the mode indicator.
11. The transmitter of claim 10, wherein the mode indicator indicates an original CPHY mode, or an MCS mode for modulating the payload.
12. The transmitter of claim 10, wherein the mode indicator indicates the reserved bits are reserved.
13. The transmitter of claim 10, wherein the CPHY preamble is an IEEE 802.11 ad CPHY preamble.
14. A receiver in a millimeter wave network, comprising:
a preamble processor, configured to determine a type of a packet;
a header processor, configured to determine a mode of the packet;
a decoder, configured to demodulate and decode the packet according to the mode of the packet; and
a DPHY decoder, wherein if the type of the packet is DPHY, the preamble processor transmits the packet to the DPHY decoder and the packet is demodulated and decoded by the DPHY decoder; and if the type of the packet is CPHY, the preamble processor transmits the packet to the header processor.
15. The receiver of claim 14, wherein the mode is defined by setting reserved bits of a CPHY header.
16. The receiver of claim 15, wherein the mode indicates an original CPHY mode, or an MCS mode for demodulating the payload.
17. The receiver of claim 15, wherein the preamble processor extracts a CPHY preamble from the receiver packet, wherein the CPHY preamble is an IEEE 802.11 ad CPHY preamble.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A support mechanism for supporting a heavy structure by suspending, comprising:
a fast pulley fixed to an inner wall of a package that accommodates the heavy structure which is an object being supported;
a movable pulley configured to function cooperatively with the fast pulley;
a rope-like connecting member having one end connected with the structure and movably wound on the fast pulley and the movable pulley;
a counterweight unit coupled to the other end of the connecting member, the counterweight unit including a counterweight having weight which is adjustable and utilizing the weight of the counterweight to support the heavy structure; and
a suspending device provided in the counterweight unit to suspend and position the heavy structure at a position upwardly relative to a normal support position.
2. The support mechanism for the heavy structure as claimed in claim 1, wherein the counterweight is provided with, as the suspending device, a winding device to wind up and fix the rope-like connecting member.
3. The support mechanism for the heavy structure as claimed in claim 2, wherein the winding device is fitted to a frame that is configured to guide the counterweight in a vertical direction.
4. The support mechanism for the heavy structure as claimed in claim 2, wherein the winding device is fitted to the counterweight.
5. The support mechanism for the heavy structure as claimed in claim 1, wherein the counterweight is provided with, as the suspending device, a weight stopper to vertically position the counterweight from below.
6. A gas turbine engine having a portion of component elements supported by the support mechanism as claimed in claim 1, comprising:
a compressor and a turbine juxtaposed to each other along an axial direction;
a reduction gear unit mounted on a bottom wall of the package to support the compressor in a cantilevered fashion;
a heat exchanger mounted on a bottom wall of the package to perform a heat exchange between an exhaust gas from the turbine and a compressed gas from the compressor;
a main combustor coupled to an upper portion of the turbine;
an auxiliary combustor coupled to an upper portion of a turbine exhaust tube that couples the turbine to the main combustor; and
a gas supply tube that couples the heat exchanger to the main combustor;
wherein each of the main combustor, the auxiliary combustor and the gas supply tube is supported by the support mechanism.
7. The gas turbine engine as claimed in claim 6, wherein the heat exchanger supports the turbine exhaust tube and the auxiliary combustor in a cantilevered fashion.