KR101690791B1 - Transmission/reception apparatus and method for frame including protocol version in ultra wide-band system - Google Patents

Abstract

In a UWB wireless communication system, a protocol version is included in a fixed-length physical layer header of a frame to enable mutual operation between systems using different protocol versions, and information on a modulation and coding scheme is included in a fixed-length physical layer header The present invention relates to an apparatus and a method for transmitting and receiving a frame in which a decoding delay problem caused by a Reed-Solomon code is solved.

Description

TECHNICAL FIELD [0001] The present invention relates to an apparatus and a method for transmitting / receiving a frame including a protocol version in a UWB wireless communication system,

The present invention relates to an apparatus and method for generating and transmitting a frame including a protocol version for distinguishing a system that follows an older version from a system that follows a newer version in an UWB radio communication system.

According to the conventional UWB wireless communication system, the protocol header is composed of a fixed-length PHY header, a variable-length PHY header, and a MAC header. Then, the fixed-length PHY header is coded with a repetition code, and the remaining variable-length PHY header and the MAC header are encoded together with a Reed-Solomon code. Reed-Solomon codes typically take a significant amount of time to decode, and a significant amount of data information following the protocol header may be received during decoding.

According to the conventional UWB wireless communication system, the reception processing information of the data information is included in the variable length PHY header. Therefore, the receiving apparatus must buffer the received data information until it decodes the variable length PHY header. In ultra-wideband wireless communication, this buffer amount is substantial and may require expensive memory. Therefore, a method capable of reducing the buffer amount as much as possible is required.

Also, a new protocol that can reduce the amount of buffer and a method that can distinguish the new protocol from the old protocol for the coexistence of the old protocol are also required.

An embodiment of the present invention proposes an apparatus and method for transmitting and receiving a frame including a protocol version in an UWB wireless communication system.

The embodiment of the present invention proposes a configuration of a protocol header including a protocol version for distinguishing between a system that follows an older version and a system that follows a newer version in an UWB wireless communication system.

The embodiment of the present invention proposes a configuration of a protocol header that solves the problem of decoding delay caused by a Reed-Solomon code by including information on a modulation and coding scheme in a fixed-length physical layer header, Receiving apparatus and method of the present invention.

In a UWB wireless communication system according to an embodiment of the present invention, a transmitting apparatus for transmitting a frame includes a Physical Layer Convergence Protocol (PLCP) preamble, a PLCP header, a PHY Protocol Data Unit (PPDU) payload, and an Antenna Training Sequence And a mode inserter for inserting a mode of a first segment into the fixed length physical layer header of the PLCP header when the PPDU frame is generated.

In a UWB wireless communication system according to an embodiment of the present invention, a receiving apparatus for receiving a frame includes a Physical Layer Convergence Protocol (PLCP) preamble, a PLCP header, a PHY Protocol Data Unit (PPDU) payload, and an Antenna Training Sequence ) And a mode of a first segment included in a fixed-length physical layer header of the PLCP header when reading the PPDU frame, And a mode checking unit for checking the modulation and coding scheme of the mobile station.

A method of transmitting a frame in an UWB wireless communication system according to an exemplary embodiment of the present invention includes the steps of inserting a pre-set Physical Layer Convergence Protocol (PLCP) preamble corresponding to a protocol version, A mode of the first segment, which is information indicating a modulation and coding scheme for a first segment included in a PHY Protocol Data Unit (PPDU) payload, is inserted into the fixed-length physical layer header of the PLCP header And generating a PPDU frame including a PLCP preamble, the PLCP header, the PPDU payload, and an antenna training sequence (Antenna Training Sequence).

A method for receiving a frame in an UWB wireless communication system according to an exemplary embodiment of the present invention includes a Physical Layer Convergence Protocol (PLCP) preamble, a PLCP header, a PHY Protocol Data Unit (PPDU) payload, and an Antenna Training Sequence Receiving a PHY Protocol Data Unit (PPDU) frame including a PLCP preamble, checking a predetermined protocol version corresponding to the PLCP preamble, or checking a protocol version included in a fixed-length physical layer header of the PLCP header, Checking a mode of a first segment included in the PPDU payload if the protocol version is a new version, checking a modulation and coding scheme for the first segment, and determining a modulation and coding scheme for the first segment based on the PPDU And demodulating the first segment of the payload.

The present invention relates to an apparatus and method for transmitting and receiving a frame including a fixed length physical layer header including information on a protocol version and a modulation and coding scheme in an UWB wireless communication system, Enable interoperability. In addition, the decoding delay problem due to the Reed-Solomon code is solved by including information on the modulation and coding scheme in the fixed-length physical layer header.

1 is a diagram showing a structure of a PPDU frame according to UWB wireless communication,
FIG. 2 is a diagram showing a specific configuration of the PLCP header of FIG. 1;
3 is a block diagram of a transmitting / receiving apparatus in an UWB radio communication system according to an embodiment of the present invention.
4 is a diagram illustrating a process of receiving a frame in a receiving apparatus according to an embodiment of the present invention;
5 is a diagram illustrating a configuration of a transmitting / receiving apparatus for notifying a minimum length of a first segment in an UWB wireless communication system according to an embodiment of the present invention,
6 is a diagram illustrating a structure of a variable-length physical layer header for single segment transmission according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the UWB wireless communication system, information on a protocol version and a modulation and coding scheme is included in a fixed-length physical layer header of a frame to enable mutual operation between systems using different protocol versions, The present invention relates to an apparatus and a method for transmitting /

1 is a diagram illustrating a structure of a PPDU frame according to UWB wireless communication.

1, a frame of a PHY Protocol Data Unit (PPDU) includes a Physical Layer Convergence Protocol (PLCP) preamble 110, a PLCP header 120, a PPDU payload 130, an Antenna Training Sequence (140). At this time, the PLCP header 120 is a field corresponding to the protocol header.

The PLCP preamble 110 may be used for the purpose of assisting in timing synchronization, carrier offset recovery, and channel estimation performed in a receiving apparatus that receives a PPDU frame. That is, the receiving apparatus can precisely perform timing synchronization, carrier offset recovery, and channel estimation using the PLCP preamble 110. At this time, the PLCP preamble 110 may be configured to include a frame synchronization sequence and a channel estimation sequence. 1, a frame of a PPDU according to an exemplary embodiment of the present invention includes an antenna training indicator field (ATIF) (not shown) between a VL PHY header 123 and a MAC header and a header check sequence 125 Quot;). ≪ / RTI > At this time, ATIF is a field for indicating information necessary for antenna training. Here, the information for antenna training includes, for example, information on the number of training symbols for antenna training.

The PLCP header 120 contains information about the PHY and MAC necessary for decoding the PPDU payload 130 at the receiving apparatus. That is, the receiving apparatus can successfully decode the PPDU payload 130 using the information included in the PLCP header 120. [

1, the PLCP header 120 includes a fixed length physical layer header (FL PHY header) 121, a variable length physical layer header (123), a MAC header and a header check sequence (Header Check Sequence, HCS) FL is an abbreviation of Fixed Length, and VL is an abbreviation of Variable Length. In the following description, the PHY header is used to include the FL PHY header and the VL PHY header. In addition, the PHY header can be used to include the FL PHY header, the VL PHY header, and the ATIF. In addition, the PLCP header 120 may further include Parity Bits 127, which is an error correction code.

The FL PHY header 121 has a fixed length and has length information of the MAC header. At this time, the length information of the MAC header may be the number of MAC service data units (MSDU). A PDU (Protocol Data Unit) means a PPDU.

The VL PHY header 123 has a variable length and has information on the segments constituting the PDU frame.

The MAC header and header check sequence 125 contains a MAC header and a header check sequence (HCS) containing information on MAC service data units. At this time, the information on the MAC service data unit may include, for example, frame control information, a destination address, a source address, and sequence information on the MSDU. At this time, the sequence information for the MSDU may be composed of a plurality of fields depending on whether the MSDU is clustered in the MAC layer. Therefore, the length of the MAC header can be varied according to the number of MSDUs clustered in the MAC layer.

At this time, the HCS is information for checking whether there is an error in the combination of the FL PHY header 121, the VL PHY header 123 and the MAC header. The HCS can be configured, for example, using a Consultative Committee on International Telephone and Telegraphy (CICT) Cyclic Redundancy Check (CCC) -16 header check sequence.

Parity bits 127 contain information for correcting errors in the encoding of the frame of the PPDU or the frame of the PPDU.

The PPDU payload 130 may comprise one or more segments that are transmitted to a receiving device.

Antenna training sequence 140 contains information for antenna training between a transmitting device that transmits PPDU frames and a receiving device.

At this time, the antenna training refers to a process of exchanging antenna parameters and the like in order to maximize a link performance established between communication devices. In general, a communication device performing antenna training may select a sector or adjust transmit and receive beam patterns through an antenna training process.

2 is a diagram showing a specific configuration of the PLCP header of FIG.

2, the PLCP header includes an FL PHY header 210, a VL PHY header 220, an antenna training indicator field 230, a MAC header 240, an HCS 250, And an RS Parity 260. [

In Fig. 2, Res means a reserved field that can contain additional information as needed. In addition, in FIG. 2, the VL PHY header 220, the MAC header 240, the HCS 250, and the RS parity 260 may include the same information as the field described in FIG.

At this time, the ATIF 230 contains the number of training symbols for antenna training. Of course, the ATIF 230 may further comprise additional information required for antenna training.

Referring to FIG. 2, the FL PHY header 210 may include a 5-repetition FL PHY header generated using a repetition coding scheme. At this time, each FL PHY header can be composed of 3 sectors.

At this time, each FL PHY header includes a SCRAMBLER INIT 211, a BIT REVERSAL 212, an ATIF EXISTENCE 213, a CP LENGHT 214, a REQ CP LENGTH 215, a NUMBER OF SEGMENT 216, and a NUMBER OF MSDUs 217).

Here, the SCRAMBLER INIT 211 indicates a scrambler seed value. The BIT REVERSAL 212 indicates whether bit inversion is performed on the payload when OOK (On-Off Keying) modulation is used. The ATIF EXISTENCE 213 indicates whether an ATIF field exists between the VL PHY header and the MAC header. The CP LENGHT 214 indicates a CP (Cyclic Prefix) length for a current frame. The REQ CP LENGTH 215 indicates a CP length for a following frame. And the NUMBER OF SEGMENT 216 indicates the number of segments in the PDU frame. The NUMBER OF MSDUs 217 indicate the number of MSDUs (MAC Service Data Units) included in the frame.

At this time, the number of MAC service data units (MSDU) means the number of MSDUs clustered in the MAC layer of the communication device. Therefore, if the value of the NUMBER OF MSDUs 217 is 1 and the MSDU is not crowded, the length of the MAC header indicates 10 bytes and the value of the NUMBER OF MSDUs 217 is N (N = 2 , 3, ..., n), N MSDUs are clustered, and the MAC header length is 10 + 4 * N bytes.

The VL PHY header 220 may be repeated as many as the number of segments in the protocol data unit frame. At this time, the VL PHY header 220 includes a MODE 221, a LENGTH 222, a MIDAMBLE EXISTENCE 223, and a CONTINUEDED 224.

Here, the MODE 221 indicates a modulation scheme and a coding scheme of the corresponding segment. And LENGTH 222 represents the length of the payload in the corresponding segment. The MIDAMBLE EXISTENCE 223 indicates whether or not a MIDAMBLE exists at the end of the corresponding segment. The CONTINUEDED 224 indicates whether or not the corresponding segment is divided.

FIG. 3 is a block diagram of a transmitting / receiving apparatus in an UWB radio communication system according to an embodiment of the present invention. Referring to FIG.

Referring to FIG. 3, the UWB wireless communication system includes a transmitter 310 and a receiver 320.

The transmitting apparatus 310 includes a frame generating unit 320 that generates a PPDU frame including a PLCP preamble, a PLCP header, a PPDU payload, and an antenna training sequence (Antenna Training Sequence).

The frame generation unit 320 includes a version inserting unit 322 for inserting information on the protocol version of the PPDU frame and a mode inserting unit 324 for inserting the mode of the first segment into the FL PHY header of the PLCP header. .

The easiest way to display the protocol version is to distinguish it as a PLCP preamble. The UWB wireless communication system defines different PLCP preambles according to Type A, Type B, and Type C devices. In the Type A device, different PLCP preambles are used depending on the SCBT (Single Carrier Block Transmission) scheme and the OFDM scheme. The version inserting unit 322 may set new PLCP preambles according to each type device and / or protocol version to distinguish the protocol version, and display the protocol version using the predefined PLCP preambles.

Another way to display the protocol version is to use unused bit information in the protocol header. In the FL PHY header located immediately after the PLCP preamble, there are six reserved bits (Reserved bits, not used) and the Res bit positions are scattered. The version inserting unit 322 can insert the protocol version using at least one of the Ress of the FL PHY header. That is, the number of bits used in the protocol version may be one bit, two bits, three bits, four bits, five bits, or six bits.

The variable length PHY header and the MAC header are encoded together with Reed-Solomon codes. Reed-Solomon codes generally take a significant amount of time to decode. The analysis of the mode of the first segment of the VL PHY header is delayed, and thus the first segment constituting the PPDU payload can not be processed and may be buffered. For the buffering problem, the mode insertion unit 324 may insert the mode of the first segment into the FL PHY header of the PLCP header. The mode of the first segment is information indicating the modulation and coding scheme for the first segment included in the PPDU payload.

The mode inserting unit 324 may use a part of the Res bit fields as the version display and use the remaining Res bits as the first mode field indicating the mode of the first segment, have.

Table 1 below summarizes the mode values used in the UWB wireless communication system by devices. Although the first mode field is composed of 6 bits, the first mode field used for each device is a maximum of 5 bits. In more detail, a Type A device using an SCBT preamble can be signaled by using a 4-bit space, and a Type A device using an OFDM preamble uses a 5-bit space, but in reality, A Type B device is capable of signaling a 3-bit space, and a Type C device is capable of signaling a 2-bit space. Thus, one or two bits of the Res bit can be used as the version field representation, and the remaining 5 bits or 4 bits of the Res field can be used as the first segment mode.

Preamble type Use mode value range Type A SCBT 0b000000 ~ 0b001101 Type A OFDM 0b001110 ~ 0b010101 Type B 0b101001 to 0b101101 Type C 0b111000 ~ 0b111010

The receiving apparatus 350 includes a frame reading unit 360 that receives and reads a PPDU frame including a PLCP preamble, a PLCP header, a PPDU payload, and an antenna training sequence (Antenna Training Sequence). At this time, the frame reading unit 360 includes a version checking unit 362 for checking the protocol version and a mode checking unit 364 for checking the mode of the first segment.

If the version information is displayed through the PLCP preamble, the version checking unit 362 can check the predetermined protocol version corresponding to the PLCP preamble and confirm the protocol version.

Alternatively, the version checking unit 362 can check the inserted protocol version using at least one of the reserved bits of the FL PHY header.

The mode checking unit 364 can check the mode of the first segment included in the FL PHY header of the PLCP header to check the modulation and coding scheme of the first segment.

The receiving apparatus 350 may include a demodulating unit (not shown) for demodulating the first segment of the PPDU payload using the mode of the first segment read by the mode identifying unit 364. [

Hereinafter, a description will be given of an example of processing by the receiving apparatus when the information about the protocol version and the mode of the first segment is inserted in the FL PHY header, with reference to FIG.

4 is a diagram illustrating a process of receiving a frame in a receiving apparatus according to an embodiment of the present invention. Referring to FIG. 4, the receiving apparatus 360 starts processing the received PPDU frame by receiving the PLCP preamble in step 410. FIG.

In step 420, the receiving apparatus 360 distinguishes between the Type A apparatus using SCBT, the Type A apparatus using OFDM, the Type B apparatus, and the Type C apparatus by recognizing the reception preamble type.

The receiving apparatus 360 receives the FL PHY header in step 430 and decodes the FL PHY headers repeatedly received in step 440. At this time, Res bits are analyzed first to check the protocol version.

Then, the receiving apparatus 360 confirms whether the protocol version confirmed in step 440 is a new version or an old version.

If the checked protocol version is a new version, the receiving device 360 combines the remaining Res bit field values excluding the Res bit fields used for version display in step 460 with the device type information confirmed in step 420, Check the mode of the first segment of the load.

In step 470, the receiving apparatus 360 receives the VL PHY header, the MAC header, and the HCS, and decodes the received VL PHY header, the MAC header, and the HCS.

In step 480, the receiving apparatus 360 starts receiving the PPDU payloads that can be received during decoding through the mode information of the first segment identified in step 460. Step 480 may demodulate the PPDU payload signal into bit information. Even if the PHY header, the MAC header, and the HCS in step 470 are not completely decoded, the receiving apparatus 360 can demodulate the received PPDU payload signal with bit information, thereby reducing the buffer capacity.

If it is determined in step 440 that the checked protocol version is an older version, the receiving device 360 performs a corresponding procedure in step 490 according to the old version protocol.

If the checked protocol version is an undefined value in step 440, the receiving apparatus 360 deletes the PPDU frame received in step 492.

4, if the payload is composed of two or more segments and the first segment and the second segment have different mode values and the first segment length is very short, a problem may occur. That is, when the first segment receiving process is completed and the receiving of the second segment is started during the decoding process of the VL PHY header, although the mode value of the second segment is different from the first segment mode value, A malfunction may be caused to process the segment as the first segment mode value. As a method for avoiding the malfunction described above, the first segment length can also be included in the FL PHY header. However, there is insufficient bit space available for defining the 16-bit length field in the FL PHY header. Therefore, in the embodiment of the present invention, in case of a payload composed of segments having two or more different mode values, the first segment length can be limited to be long enough. If a 16 bit length field can be defined by not using existing defined fields in the FL PHY header of FIG. 2, a 16 bit length field may be defined to be inserted in the FL PHY header.

The problem that may occur when the payload is composed of two or more segments and the first segment and the second segment have different mode values is prevented in the following manner. The receiving apparatus according to the embodiment of the present invention prevents the minimum length of the first segment by setting a minimum value of the first segment length to an arbitrary value that is longer than the decoding delay time of the header code and notifying the transmitting apparatus of the minimum value.

In the UWB wireless communication system, the MAC Capabilities IE and the PHY Capabilities IE field information are transmitted in a beacon frame to inform peripheral devices of their specifications.

5 is a diagram illustrating a configuration of a transmitting / receiving apparatus for notifying a minimum length of a first segment in an UWB wireless communication system according to an embodiment of the present invention.

Referring to FIG. 5, one embodiment of the present invention may consider further defining a first segment length minimum value in one of the MAC / PHY Capabilities IEs 540.

The receiving apparatus 350 includes a beacon generating unit 510 for generating a MAC / PHY Capabilities IE field 540 of the beacon frame 530 by including a minimum length field 546 of the first segment.

More specifically, the beacon generator 510 determines whether the first segment minimum length is to be limited in the Capability Bitmap field 542 in the MAC / PHY Capabilities IE field 540 transmitted through the beacon message A MFS (Miminum First Segment) bit 544 is additionally defined. The beacon generator 510 sets the MFS bit 544 to 1 to indicate the minimum segment length limit of the first segment and the minimum segment length field 546 of the first segment to limit the following Reserved field. ).

The transmitting apparatus 310 receives the beacon frame 530 from the receiving apparatus 350 and transmits the minimum length field 546 of the first segment inserted in the MAC / PHY Capabilities IE field 540 of the beacon frame 530 And a beacon reading unit 520 for checking the minimum length information of the first segment.

When generating the PPDU frame, the frame generation unit 320 generates the first segment so that the length of the first segment is equal to or greater than the minimum length of the first segment identified by the beacon reading unit 520. [

That is, the frame generator 320 must guarantee the minimum length of the first segment notified by the reception apparatus 350 through the MAC / PHY Capabilities IE field 540. [

If the amount of data to be transmitted to the first segment by the transmitting apparatus 310 is smaller than the minimum length of the first segment notified by the receiving apparatus 350, the frame generating unit 320 adds bytes having a zero value to the end of the first segment data The first segment minimum length can be satisfied. At this time, the frame generator 320 should display the number of padding bytes so that the receiving apparatus 350 can easily remove the added zero padding bytes. The padding byte count is indicated by using unused reserved fields corresponding to the first segment in the VL PHY header or by using the first MSDU length field value of the MAC header (which is the actual effective data length) and the first segment length field value in the VL PHY header This can be expressed as the difference in length including zero padding bytes).

Meanwhile, a plurality of segments may be included in one PPDU frame in the UWB wireless communication system. However, the function of including a plurality of segments in a PPDU frame needs to be reconsidered. The function of including a plurality of segments can apply a Modulation and Coding Scheme (MCS) optimal for a channel for each segment constituting a PPDU frame when a channel is rapidly changed during transmission of one PPDU frame . However, in the case of high-speed wireless communication, since the time required for transmission of a PPDU frame is very short, a phenomenon in which a channel is rapidly changed can be considered to be extremely low. Also, even if the channel is rapidly changed, the transmission apparatus can not perceive a change in the channel state, and can estimate the channel state information only when the reception apparatus feeds back the channel state information. Therefore, it is practically impossible to apply MCS for each segment constituting a PPDU frame when transmitting one PPDU frame.

When the function of including a plurality of segments may be useful, when data having different significance levels are transmitted in one PPDU frame format, the data is segmented according to importance, and the segments are transmitted to the MCS according to the importance. However, in this method, an upper layer protocol for clustering data having different importance levels into one PPDU frame may be complicated. The PHY layer interprets the clustering information performed in the upper layer of the PHY, and the PPDU frame is divided into segments The implementation of the PHY itself becomes complicated. It is possible to easily apply the MCS according to the importance by transmitting data having different importance levels to different PPDU frames.

Accordingly, the frame generator 320 may signal that a single segment is transmitted using the PLCP preamble and the Res bits in the FL PHY header. Alternatively, the frame generator 320 may generate a frame number A single segment transmission can be indicated by setting the Segment (216) field value to one. If only the former method is used, the Number of Segment (216) field may be used for other purposes. In the case of a single segment transmission, the VL PHY header 220 field is no longer variable length, and the Midamble existence 223 and Continued 224 fields of the VL PHY header 220 are no longer needed. The Mode (221) field is also duplicated because it is included in the FL PHY header through the embodiment of the present invention described above. Therefore, unnecessary or redundant fields can be deleted when the PPDU frame is generated.

On the other hand, when a single segment is transmitted, since the Length (222) field of the segment is composed of 16 bits, the length of the PPDU frame can be limited to 16 bits. In order to compensate for this, the Length (222) field may be extended to include the unnecessary bit information and the Res bit of the VL PHY header 220 described above.

When the PPDU payload is composed of a single segment, the frame generation unit 320 has the Length (222) field to have an extended number of bits.

As a method of extending the Length (222) field, the frame generator 320 may use the at least one of the Res bits of the VL PHY header to have the Length (222) field have the extended number of bits. In addition, the frame generator 320 may use a part of the Mode 221 field, the Midamble existence 223 field, the Continued 224 field, and the Res bit so that the Length 222 field has an extended number of bits have.

6 is a diagram illustrating a structure of a variable-length physical layer header for single segment transmission according to an embodiment of the present invention. 6, the structure of the VL PHY header 610, 620, and 630 according to the three embodiments applicable to a single segment transmission will be described.

Referring to FIG. 6, the VL PHY header 610 includes a conventional LENGTH field 222 and a 4-bit Res. Field, and an extended LENGTH field 611, which is an extended LENGTH field.

The VL PHY header 620 includes a conventional LENGTH field 222 and a MODE field 221 and a 3-byte LENGTH field 621 with Res bit fields neighboring the MODE field 221, All Res. Bit.

The VL PHY header 630 is shown in the VL PHY header 620 in Fig. The bits may be composed of only the deleted 3-byte LENGTH field.

The PPUD frame according to the embodiment of the present invention can be applied to the ECMA standard. In addition, the methods according to embodiments of the present invention may be implemented in the form of program instructions that can be executed through various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions recorded on the medium may be those specially designed and constructed for the present invention or may be available to those skilled in the art of computer software.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. This is possible.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the equivalents of the claims, as well as the claims.

310; Transmitting device
320; The frame-
322; Version insertion section
324; Mode insertion unit
350; Receiving device
360; The frame-
362; Version Verification
364; Mode check section

Claims (18)

A frame generator for generating a PPDU frame including a Physical Layer Convergence Protocol (PLCP) preamble, a PLCP header, a PHY Protocol Data Unit (PPDU) payload, and an antenna training sequence;
A mode inserter for inserting a mode of a first segment into the fixed length physical layer header of the PLCP header when the PPDU frame is generated; And
A beacon reader for receiving a beacon frame from a receiving device and confirming minimum length information of the first segment inserted in a MAC Capabilities IE field or a PHY Capabilities IE field of the beacon frame;
Lt; / RTI >
Wherein the frame generator generates a length of the first segment equal to or greater than a minimum length of the first segment identified by the beacon reader when generating the PPDU frame,
A transmitting apparatus for transmitting a frame in an UWB radio communication system.
The method according to claim 1,
The mode of the first segment includes:
And information indicating a modulation and coding scheme for a first segment included in the PPDU payload.
A transmitting apparatus for transmitting a frame in an UWB radio communication system.
The method according to claim 1,
Wherein the mode inserting unit comprises:
And a mode of the first segment is inserted using at least one of reserved bits of the fixed-length physical layer header.
A transmitting apparatus for transmitting a frame in an UWB radio communication system.
The method according to claim 1,
And a version inserter for inserting information about a protocol version of the PPDU frame when the PPDU frame is generated.
A transmitting apparatus for transmitting a frame in an UWB radio communication system.
5. The method of claim 4,
The version inserting unit,
And inserting a predefined PLCP preamble corresponding to the protocol version into the PLCP preamble when the PPDU frame is generated.
A transmitting apparatus for transmitting a frame in an UWB radio communication system.
5. The method of claim 4,
The version inserting unit,
And inserting the protocol version using at least one of the reserved bits of the fixed-length physical layer header.
A transmitting apparatus for transmitting a frame in an UWB radio communication system.
delete A frame generator for generating a PPDU frame including a Physical Layer Convergence Protocol (PLCP) preamble, a PLCP header, a PHY Protocol Data Unit (PPDU) payload, and an antenna training sequence; And
A mode insertion unit which includes a mode of a first segment when the PPDU frame is generated in a fixed-length physical layer header of the PLCP header,
Lt; / RTI >
Wherein the frame generation unit comprises:
Wherein when the PPDU payload is composed of a single segment, a length (LENGTH) field included in a variable length physical layer header of the PLCP header has an extended number of bits.
A transmitting apparatus for transmitting a frame in an UWB radio communication system.
9. The method of claim 8,
Wherein the frame generation unit comprises:
Wherein when the PPDU payload is composed of a single segment, the length field has an extended bit number by using at least one of reserved bits of the variable length physical layer header.
A transmitting apparatus for transmitting a frame in an UWB radio communication system.
9. The method of claim 8,
Wherein the frame generation unit comprises:
When the PPDU payload is composed of a single segment, a mode field indicating a modulation scheme and a coding scheme of a corresponding segment, a Midamble existence field indicating whether a midamble exists at a corresponding segment end, whether or not the corresponding segment is divided, And at least one of reserved bits of the variable length physical layer header to generate the PPDU frame,
Wherein the length field has an extended number of bits using at least one of the mode field, the Midamble existence field, the Continued field, and the reserved bits.
A transmitting apparatus for transmitting a frame in an UWB radio communication system.
A frame reader for receiving and reading a PPDU frame including a Physical Layer Convergence Protocol (PLCP) preamble, a PLCP header, a PHY Protocol Data Unit (PPDU) payload, and an antenna training sequence;
A mode checking unit checking a mode of a first segment included in a fixed-length physical layer header of the PLCP header when reading the PPDU frame, and verifying a modulation and coding scheme of the first segment; And
A beacon generator for transmitting the minimum length information of the first segment in the MAC Capabilities IE field or the PHY Capabilities IE field of the beacon frame,
/ RTI >
A receiving apparatus for receiving a frame in an UWB wireless communication system.
12. The method of claim 11,
Further comprising a demodulating unit for demodulating the first segment of the PPDU payload using the mode of the first segment read by the mode checking unit,
A receiving apparatus for receiving a frame in an UWB wireless communication system.
12. The method of claim 11,
Further comprising a version checking unit for checking information on a protocol version in the PPDU frame when reading the PPDU frame.
A receiving apparatus for receiving a frame in an UWB wireless communication system.
14. The method of claim 13,
The version checking unit,
And confirms the protocol version by confirming the PLCP preamble and checking a predetermined protocol version corresponding to the PLCP preamble.
A receiving apparatus for receiving a frame in an UWB wireless communication system.
14. The method of claim 13,
The version checking unit,
Characterized in that at least one of the reserved bits of the fixed-length physical layer header is used to identify the inserted protocol version.
A receiving apparatus for receiving a frame in an UWB wireless communication system.
delete Receiving a beacon frame from a receiving device;
Identifying a minimum length information of a first segment inserted in a MAC Capabilities IE field or a PHY Capabilities IE field of the beacon frame;
Inserting a predetermined Physical Layer Convergence Protocol (PLCP) preamble corresponding to the protocol version or inserting the protocol version into a fixed-length physical layer header of a PLCP header;
Inserting a mode of the first segment, which is information indicating a modulation and coding scheme for a first segment included in a PHY Protocol Data Unit (PPDU) payload, into the fixed-length physical layer header of the PLCP header; And
Generating a PPDU frame including a PLCP preamble, the PLCP header, the PPDU payload, and an Antenna Training Sequence,
Wherein generating the PPDU frame comprises generating the PPDU frame such that the PPDU frame is greater than or equal to a minimum length of the first segment,
A method for transmitting a frame in an UWB wireless communication system.
Receiving a PPDU frame including a Physical Layer Convergence Protocol (PLCP) preamble, a PLCP header, a PHY Protocol Data Unit (PPDU) payload, and an Antenna Training Sequence;
Confirming a predetermined protocol version corresponding to the PLCP preamble or confirming a protocol version included in a fixed-length physical layer header of the PLCP header;
Confirming a mode of a first segment included in the PPDU payload if the protocol version is a new version, and checking a modulation and coding scheme for the first segment;
Demodulating the first segment of the PPDU payload using the mode of the first segment; And
Including the minimum length information of the first segment in the MAC Capabilities IE field or the PHY Capabilities IE field of the beacon frame
Containing
A method for receiving frames in an UWB wireless communication system.

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