TRANSMISSION/RECEPTION APPARATUS AND METHOD FOR FRAME INCLUDING PROTOCOL VERSION IN ULTRA WIDEBAND SYSTEM

• US 20110044271A1
• Filed: 08/18/2010
• Published: 02/24/2011
• Est. Priority Date: 08/18/2009
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Chung, Hyun Kyu, HONG, Seung Eun, Lee, Woo Yong, Kim, Kyeongpyo
• Granted Patent: US 8,462,720 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

Provided is a transmission/reception apparatus and method for transmitting a frame in an ultra wideband radio communication system, which may enable a protocol version to be included in a fixed-length physical layer protocol (PHY) header so that interaction between systems using different protocol versions may be realized, and may enable information about a modulation and coding scheme to be included in a variable-length PHY header to thereby overcome a decoding delay problem occurring due to a Reed Solomon code.

Claims

1. A transmission apparatus for transmitting a frame in an ultra-wideband radio communication system, the transmission apparatus comprising:

a frame generation unit to generate a physical layer (PHY) Protocol Data Unit (PPDU) frame including a Physical Layer Convergence Protocol (PLCP) preamble, a PLCP header, a PPDU payload, and an antenna training sequence; and

a mode insertion unit to insert, in a fixed length-physical layer header of the PLCP header, information about a mode of a first segment when the PPDU frame is generated, the mode being included in the PPDU frame.

2. The transmission apparatus of claim 1, wherein the mode of the first segment indicates a modulation and coding scheme for the first segment included in the PPDU payload.

3. The transmission apparatus of claim 1, wherein the mode insertion unit inserts, in the PPDU frame, information about the mode of the first segment using at least one of reserved bits of the fixed length-physical layer header.

4. The transmission apparatus of claim 1, further comprising:

a version insertion unit to insert, in the PPDU frame, information about a protocol version of the PPDU frame when the PPDU frame is generated.

5. The transmission apparatus of claim 4, wherein the version insertion unit inserts, in the PPDU frame, a predetermined PLCP preamble corresponding to the protocol version when the PPDU frame is generated.

6. The transmission apparatus of claim 4, wherein the version insertion unit inserts the protocol version using at least one of reserved bits of the fixed length-physical layer header.

7. The transmission apparatus of claim 1, further comprising:

a beacon reading unit to receive a beacon frame from a reception apparatus, and to verify a minimum length of the first segment inserted in a Media Access Control (MAC) capabilities information element (IE) field of the beacon frame or a PHY capabilities IE field of the beacon frame,

wherein, when generating the PPDU frame, the frame generation unit generates the length of the first segment to be equal to or greater than the minimum length of the first segment verified in the beacon reading unit.

8. The transmission apparatus of claim 1, wherein the frame generation unit enables a length field included in a variable length physical layer header of the PLCP header to have an expanded bit number, when configuring the PPDU payload as a single segment.

9. The transmission apparatus of claim 8, wherein the frame generation unit enables the length field to have the expanded bit number using at least one of reserved bits of the variable length physical layer header, when configuring the PPDU payload as the single segment.

10. The transmission unit of claim 8, wherein, when configuring the PPDU payload as the single segment, the frame generation unit generates the PPDU frame by removing at least one of a mode field indicating a modulation and coding scheme of a corresponding segment, a midamble existence field indicating whether a midamble exists in an end of the corresponding segment, a continued field indicating whether the corresponding segment is divided, and the reserved bits of the variable length physical layer header, and enables the length field to have the expanded bit number using at least one of the mode field, the midamble existence field, the continued field, and the reserved bits.

11. A reception apparatus for receiving a frame in an ultra-wideband radio communication system, the reception apparatus comprising:

a frame reading unit to receive a PPDU frame including a PLCP preamble, a PLCP header, a PPDU payload, and an antenna training sequence, and to read the received PPDU frame; and

a mode verification unit to verify a mode of a first segment included in a fixed length-physical layer header of the PLCP header when reading the PPDU frame, and to verify a modulation and coding scheme of the first segment.

12. The reception apparatus of claim 11, further comprising:

a demodulation unit to demodulate the first segment of the PPDU payload using the first segment verified in the mode verification unit.

13. The reception apparatus of claim 11, further comprising:

a version verification unit to verify information about a protocol version in the PPDU frame, when reading the PPDU frame.

14. The reception apparatus of claim 13, wherein the version verification unit verifies the PLCP preamble and a predetermined protocol version corresponding to the PLCP preamble to verify the protocol version.

15. The reception apparatus of claim 13, wherein the version verification unit verifies the protocol version using at least one of reserved bits of the fixed length-physical layer header.

16. The reception apparatus of claim 12, further comprising:

a beacon generation unit to enable a minimum length of the first segment to be included in an MAC capabilities IE field of a beacon frame or included in a PHY capabilities IE field of the beacon frame, and to transmit the minimum length.

17. A method of transmitting a frame in an ultra-wideband radio communication system, the method comprising:

verifying a predetermined PLCP preamble corresponding to a protocol version, the PLCP preamble being inserted in a PPDU frame, or inserting, in a fixed length-physical layer header of a PLCP header, the protocol version;

inserting, in the fixed length-physical layer header, a mode of a first segment included in a PPDU payload, the mode indicating a modulation and coding scheme for the first segment; and

generating a PPDU frame including the PLCP preamble, the PLCP header, the PPDU payload, and an antenna training sequence.

18. A method of transmitting a frame in an ultra-wideband radio communication system, the method comprising:

receiving a PPDU frame including a PLCP preamble, a PLCP header, a PPDU payload, and an antenna training sequence;

verifying a predetermined protocol version corresponding to the PLCP preamble, or verifying a protocol version included in a fixed length-physical layer header of the PLCP header;

verifying a mode of a first segment included in the PPDU payload when the protocol version is a new version, to verify a modulation and coding scheme of the first segment; and

demodulating the first segment included in the PPDU payload using the mode of the first segment.