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1.发明授权COMMUNICATION METHOD FOR A COMMUNICATION NETWORK HAVING MINIMIZED ROUND-TRIP CONTENTION DELAY 有权通信方法与最小化当前的延迟在操作大赛通信网络
公开(公告)号：EP1151582B1
公开(公告)日：2007-05-23
申请号：EP00981295.9
申请日：2000-11-23
IPC分类号： H04L12/28 , H04L29/06 , H04B7/26 , H04L12/403 , H04L12/413
CPC分类号： H04L12/403 , H04B7/2628 , H04L12/2801 , H04L12/413
摘要： A communication network comprises a head-end (2) and a plurality of network terminations coupled thereto through a shared communication channel (3), which is accessed by a protocol having one or more dedicated slots (6) wherein upstream data cells are contained, which may collide in a transmission wherein two or more network terminations try to access the shared communication channel practically simultaneously. Herein the protocol is arranged such that the one or more dedicated (6) slots precede the moment Tss (i) whereon the first next downstream transmission is started to be prepared by the head-end. In that case actual information in the dedicated slots can be fed back without substantial delay to the network terminations in order to provide them by return with actual contention information.
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2.发明公开
公开(公告)号：EP1438837A2
公开(公告)日：2004-07-21
申请号：EP02767787.1
申请日：2002-09-12
发明人： DENTENEER, Theodorus, J., J. , HEKSTRA-NOWACKA, Ewa, B. , PRONK, Serverius, P., P. , TOLHUIZEN, Ludovicus, M., G., M.
IPC分类号： H04N5/00
CPC分类号： H04L47/25 , H04N7/17309 , H04N21/2221 , H04N21/2385 , H04N21/2393 , H04N21/26216
摘要： The invention relates to a method and a system that are used during tree-search or stack contention-resolution protocols that resolve message transmission collisions between for example Cable Television stations (CaTV). The CaTV broadband data network provides two-way communication between subscriber computer systems (102, 104, 106, 110, 112, 114) and the CaTV head-end (100). In order to resolve collisions between messages sent by CaTVs a method of transmitting a plurality of messages, the plurality of messages being transmitted over a communication channel is provided. This method comprises: requesting to submit a first request for transmitting a first message of the plurality of messages and to submit a second request for transmitting a second message of the plurality of messages until there is no first collision detected between the submitted first request and the submitted second request upon receipt of the submitted first and second request. Before there is no first collision detected between the submitted first request and the submitted second request, it is requested to submit a third request for transmitting a third message of the plurality of messages and to submit a fourth request for transmitting a fourth message of the plurality of messages. However, requesting to re-submit the third request for transmitting the third message and to re-submit the fourth request for transmitting the fourth message if a second collision is detected between the submitted third request and the submitted second request upon receipt of the submitted third and second request is delayed until there is no first collision detected between the submitted first request and the submitted second request.
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3.发明公开DVB CATV TRANSMISSION SYSTEM AND METHOD WITH DETECTION OF ABILITY TO HANDLE UNSOLICITED GRANTS FOR DATA TRANSMISSIONS 审中-公开DVB-CATV传输系统和方法检测主动授权的数据传输处理的可能性
公开(公告)号：EP1360801A1
公开(公告)日：2003-11-12
申请号：EP02737622.7
申请日：2002-01-04
CPC分类号： H04N21/6156 , H04H20/78 , H04N7/17336 , H04N21/26216 , H04N21/6118 , H04N21/6143 , H04N21/6168 , H04N21/6581
摘要： Described is a transmission system comprising at least one primary station (2) and at least one secondary station (4). The primary station (2) and the secondary station (4) are coupled to each other via a transmission medium (14). The secondary station (4) comprises data transmission request means (36, 42, 44) for transmitting a data transmission request (70) to the primary station (2) when transmission data are available in the secondary station (4). The transmission system is characterised in that the primary station (2) comprises transmission means (20, 22, 26) for transmitting, upon receipt of the data transmission request (70), a data transmission refusal (72) followed by a data transmission grant (74) to the secondary station (4). The primary station (2) comprises monitoring means (22, 28) for monitoring the transmission of data (76) by the secondary station (2) in response to the data transmission grant (74). In this way, the primary station (2) can determine the ability of the secondary station (4) to handle unsolicited grants.
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公开(公告)号：EP1374461A1
公开(公告)日：2004-01-02
申请号：EP02711165.7
申请日：2002-02-18
CPC分类号： H04L12/525 , H04J3/1694 , H04L2012/644 , H04L2012/6448 , H04L2012/6456 , H04L2012/6459 , H04N7/173
摘要： Described is a method, wherein consecutive data slots (1, .. N), which are located between a beginning and an end of a frame (1, .. 4) included in a group of successive frames (1, .. 4), are assigned to intra frame group defined data slot connections for establishing an upstream data transfer from one or more secondary stations (3-1, .. 3-n) through a transmission channel (CH) to a primary station (2). The system may be a hybrid fiber coax data communication system. Several of such data slot connections between one or more secondary stations and the primary station are thus defined. Those data slots (1, .. N) that are assigned to said data slot connections are concentrated, either at the beginning or at the end of the group of successive frames (1, .. 4) by reallocating at least one data slot connection. The method makes an effective and well balanced use of the transmission channel by carrying out a reallocation of at least one data slot connection. The reallocation involves the termination of an existing data slot connection to be reallocated, and the rescheduling thereof in a next group of frames.
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5.发明公开
公开(公告)号：EP1151582A1
公开(公告)日：2001-11-07
申请号：EP00981295.9
申请日：2000-11-23
CPC分类号： H04L12/403 , H04B7/2628 , H04L12/2801 , H04L12/413
摘要： A communication network comprises a head-end (2) and a plurality of network terminations coupled thereto through a shared communication channel (3), which is accessed by a protocol having one or more dedicated slots (6) wherein upstream data cells are contained, which may collide in a transmission wherein two or more network terminations try to access the shared communication channel practically simultaneously. Herein the protocol is arranged such that the one or more dedicated (6) slots precede the moment Tss (i) whereon the first next downstream transmission is started to be prepared by the head-end. In that case actual information in the dedicated slots can be fed back without substantial delay to the network terminations in order to provide them by return with actual contention information.
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