(WO/2005/027456) COMMUNICATION SYSTEM, COMMUNICATION DEVICE, AND DATA RETRANSMISSION CONTROL METHOD
- Biblio. Data
- Description
- Claims
- National Phase
- Notices
- Documents
| Latest bibliographic data on file with the International Bureau
| ||||||||||||
| ||||||||||||
| IPC: | H04L 29/02 (2006.01) | |||||||||||
| Applicants: | NOMURA RESEARCH INSTITUTE CO., LTD. [JP/JP]; 2-1, Otemachi 2-chome, Chiyoda-ku, Tokyo
1000004 (JP) (All Except US). TATENO, Shuji [JP/JP]; (JP) (US Only). TERAOKA, Masaya [JP/JP]; (JP) (US Only). TAMAGAWA, Tetsuji [JP/JP]; (JP) (US Only). | |||||||||||
| Inventors: | TATENO, Shuji; (JP). TERAOKA, Masaya; (JP). TAMAGAWA, Tetsuji; (JP). | |||||||||||
| Agent: | Willfort International; Kunii Bldg, 2F, 16, Kanada Konyacho, Chiyoda-ku, Tokyo 1010035 (JP). | |||||||||||
| Priority Data: |
| |||||||||||
| Title: |
(EN) COMMUNICATION SYSTEM, COMMUNICATION DEVICE, AND DATA RETRANSMISSION CONTROL METHOD (JA) 通信システム、通信装置、およびデータの再送制御方法 | |||||||||||
| Abstract: |
(EN) [PROBLEMS] To realize data transmission without lowering the transmission rate even for a transmission path having a comparatively high packet loss ratio. [MEANS FOR SOLVING PROBLEMS] A transmission device (1) includes: a data transmission unit (11) for transmitting a data packet (50) containing data, a data serial number indicating the data order, and a transmission serial number indicating the transmission order and receiving an acknowledge packet (60) containing the next data serial number, a bit string indicating the reception state, and a transmission serial number which has been received; a transmission history storage unit (14) for storing a transmission history of the data packet transmitted by the data transmission unit (11); and a retransmission control unit (12) for referencing the transmission history storage unit (14) so as to specify a data serial number requiring retransmission according to the acknowledge packet (60) received and instructing the data transmission unit (11) to perform retransmission. A reception device (2) includes a data reception unit (21) for receiving the data packet (50) transmitted from the transmission device (1), generating an acknowledge packet (60) for this, and transmitting it to the transmission device (1). (JA) 【課題】 パケットロス率が比較的高い伝送路でも、伝送速度を低下させないようにデータ送信をする。 【解決手段】 送信装置１は、データとデータの順序を示すデータ通番と送信順序を示す送信通番とを含むデータパケット５０を送信し、次データ通番と受信状況を示すビット列と受信済みの送信通番とを含む確認応答パケット６０を受信するデータ送信部１１と、データ送信部１１が送信したデータパケットの送信履歴を記憶する送信履歴記憶部１４と、送信履歴記憶部１４を参照して、受信した確認応答パケット６０に基づいて再送が必要なデータ通番を特定し、データ送信部１１に再送指示をする再送制御部１２とを備える。受信装置２は、送信装置１から送信されたデータパケット５０を受信し、これに対する確認応答パケット６０を生成し、送信装置１へ送信するデータ受信部２１を備える。 | |||||||||||
| Designated States: |
AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW. African Regional Intellectual Property Org. (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW) Eurasian Patent Organization (EAPO) (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM) European Patent Office (EPO) (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IT, LU, MC, NL, PL, PT, RO, SE, SI, SK, TR) African Intellectual Property Organization (OAPI) (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG). | |||||||||||
| Publication Language: | Japanese (JA) |
| Filing Language: | Japanese (JA) |
