# US 2008/0186910 A1 · Apparatus and method for supporting different frame structures in broadband wireless communication system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2008/0186910 A1 - Document ID: US20080186910A1 - Status: Published application - Kind: A1 - Application number: 12/024,225 - Filed: 2008-02-01 - Published: 2008-08-07 - Earliest claimed: 2007-02-01 - Assignees: Samsung Electronics Co., Ltd. - Inventors: Min-Hee Cho; Jae-Hee Cho; Nam-Gi Kim; Hyon-Goo Kang; June Moon; Kwan-Hee Roh - Web page: https://patentgrep.com/patent/US20080186910A1 ## CPC - H04W 88/10: adapted for operation in multiple networks, e.g. multi-mode access points - H04L 27/2602: {Signal structure} - H04L 27/2603: {Signal structure ensuring backward compatibility with legacy system} - H04L 27/2656: {Frame synchronisation, e.g. packet synchronisation, time division duplex [TDD] switching point detection or subframe synchronisation} - H04W 88/06: adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract An apparatus and method for supporting different frame structures in a broadband wireless communication system are provided. A communication method of a Base Station (BS) includes determining a frame structure to be provided. A MAP message including an indicator that indicates a new standard is generated, when the provided frame structure conforms to the new standard. The generated MAP message is transmitted by performing physical layer encoding thereon. Accordingly, signaling is defined to report a currently provided frame structure to an MS, and thus, a system can support different frame structures. ## Claims ### Claim 1 A Base Station (BS) apparatus in a broadband wireless communication system supporting different frame structures, the apparatus comprising: a controller for determining a frame structure to be provided; a first Media Access Control (MAC) processor for generating a MAP message comprising an indicator that indicates a new standard if the provided frame structure conforms to the new standard; and a first Transmit (Tx) modem for performing physical layer encoding on the message generated by the first MAC processor. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the MAP message comprises version information of the frame structure. ### Claim 3 (depends on 1) The apparatus of claim 1, wherein the MAP message comprises a version index of the frame structure, and wherein the version index is determined by Equation: version index=N mod 2v, where N denotes a version value, and V denotes a length of the version index. ### Claim 4 (depends on 1) The apparatus of claim 1, wherein, when the provided frame structure conforms to an old standard, further comprising: a second MAC processor for generating a MAP message conforming to the old standard; and a second Tx modem for performing physical layer encoding on the message generated by the second MAC processor. ### Claim 5 (depends on 4) The apparatus of claim 4, further comprising a multiplexer for multiplexing a first signal received from the first Tx modem and having a first frame structure, and a second signal received from the second Tx mode had having a second frame structure, according to a suitable scheme. ### Claim 6 (depends on 5) The apparatus of claim 5, wherein the multiplexer performs time division multiplexing or frequency division multiplexing on the first signal having the first frame structure and the second signal having the second frame structure. ### Claim 7 (depends on 6) The apparatus of claim 6, wherein, if the first signal having the first frame structure and the second signal having the second frame structure are subject to the frequency division multiplexing, a plurality of MAP messages are transmitted during one frame time period. ### Claim 8 (depends on 5) The apparatus of claim 5, further comprising a Radio Frequency (RF) transmitter for converting a signal received from the multiplexer into an RF signal and for transmitting the RF signal through an antenna. ### Claim 9 (depends on 1) The apparatus of claim 1, wherein the first Tx modem comprises: an encoder for encoding the MAP message generated by the first MAC processor; a modulator for modulating data received from the encoder; a resource mapper for mapping data, received from the modulator, to a specific region of a frame; and an Orthogonal Frequency Division Multiplexing (OFDM) modulator for performing an Inverse Fast Fourier Transform (IFFT) operation on data received from the resource mapper. ### Claim 10 A Mobile Station (MS) apparatus in a broadband wireless communication system supporting different frame structures, the apparatus comprising: a Receive (Rx) modem for obtaining frame synchronization using a preamble signal, and for receiving and decoding at least one MAP message received in at least one frequency band; and a Media Access Control (MAC) processor for determining whether the MAP message conforms to a new standard using a MAP indicator included in the MAP message received from the Rx modem. ### Claim 11 (depends on 10) The apparatus of claim 10, wherein the MAP message conforming to the new standard comprises version information of the frame structure. ### Claim 12 (depends on 10) The apparatus of claim 10, wherein the MAP message conforming to the new standard comprises a version index of the frame structure, and wherein the version index is determined by Equation: version index=N mod 2v, where N denotes a version value, and V denotes a length of the version index. ### Claim 13 (depends on 10) The apparatus of claim 10, wherein the Rx modem comprises: an Orthogonal Frequency Division Multiplexing (OFDM) demodulator for performing a Fast Fourier Transform (FFT) operation on a received baseband signal; an extractor for extracting a MAP burst from data received from the OFDM demodulator; a demodulator for demodulating data received from the extractor; and a decoder for decoding data received from the demodulator and obtaining the MAP message. ### Claim 14 (depends on 10) The apparatus of claim 10, wherein frames having the different structures are provided in a time-division multiplexing manner or a frequency-division multiplexing manner. ### Claim 15 (depends on 14) The apparatus of claim 14, wherein, when the frames having the different structures are provided in the frequency-division multiplexing manner, the Rx modem decodes a plurality of MAP messages during one frame time period. ### Claim 16 A communication method of a Base Station (BS) in a broadband wireless communication system supporting different frame structures, the method comprising the steps of: determining a frame structure to be provided; generating a MAP message comprising an indicator that indicates a new standard if the provided frame structure conforms to the new standard; and transmitting the generated MAP message by performing physical layer encoding thereon. ### Claim 17 (depends on 16) The method of claim 16, wherein the MAP message comprises version information of the frame structure. ### Claim 18 (depends on 16) The method of claim 16, wherein the MAP message comprises a version index of the frame structure, and wherein the version index is determined by Equation: version index=N mod 2v, where N denotes a version value, and V denotes a length of the version index. ### Claim 19 (depends on 16) The method of claim 16, wherein, when the provided frame structure conforms to an old standard, further comprising: generating a MAP message conforming to the old standard; and transmitting the generated MAP message by performing physical layer encoding thereon. ### Claim 20 (depends on 16) The method of claim 16, wherein frames having the different structures are provided in a time-division multiplexing manner or a frequency-division multiplexing manner. ### Claim 21 (depends on 20) The method of claim 20, wherein, if the frames having the different structures are provided in the frequency-division multiplexing manner, a plurality of MAP messages are transmitted during one frame time period. ### Claim 22 (depends on 16) The method of claim 16, wherein the step of transmitting the generated MAP message comprises: encoding and modulating the generated MAP message; mapping the modulated data to a specific resource of a frame; performing Orthogonal Frequency Division Multiplexing (OFDM) on the mapped data; and converting the OFDM-modulated data into a Radio Frequency (RF) signal and transmitting the RF signal. ### Claim 23 A communication method of a Mobile Station (MS) in a broadband wireless communication system supporting different frame structures, the method comprising the steps of: obtaining frame synchronization by using a preamble signal; decoding at least one MAP message received in at least one frequency band, after obtaining the frame synchronization; determining whether the MAP message conforms to a new standard by checking a MAP indicator included in the MAP message; and analyzing the remaining fields included in the MAP according to the new standard, when the MAP message conforms to the new standard. ### Claim 24 (depends on 23) The method of claim 23, wherein the MAP message comprises version information of the frame structure. ### Claim 25 (depends on 23) The method of claim 23, wherein the MAP message comprises a version index of the frame structure, and wherein the version index is determined by Equation: version index=N mod 2v, where N denotes a version value, and V denotes a length of the version index. ### Claim 26 (depends on 23) The method of claim 23, wherein the step of decoding of the MAP message comprises: performing Orthogonal Frequency Division Multiplexing (OFDM) demodulation on a received signal; extracting a MAP burst from the OFDM-modulated data; and demodulating and decoding the extracted data. ### Claim 27 (depends on 23) The method of claim 23, wherein frames having different structures are provided in a time-division multiplexing manner or a frequency-division multiplexing manner.