-
公开(公告)号：WO2009070983A1
公开(公告)日：2009-06-11
申请号：PCT/CN2008/001932
申请日：2008-11-26
Applicant: 大唐移动通信设备有限公司 , 孙韶辉 , 于洋 , 王映民 , 谢永斌
IPC: H04L27/32
CPC classification number: H04L5/0021 , H04L5/0019 , H04L5/0044
Abstract: Method for signal generation in broadband wireless communications, comprises: A. modulating, segmenting and serial-parallel converting the signal data to be transmitted, then computing DFT of the serial-parallel converted data so as to transfer them to frequency domain; B. performing unit block modulating processing and block repeat modulating processing on the frequency domain data, then mapping the unit blocks to assigned time-frequency positions; C. computing IFFT of the mapped unit blocks, then adding them to the cycle prefix, thus the radon sequences in time domain are generated. Apparatus for signal generation, Method and system for message transmission in broadband wireless communications are also disclosed. The problem of resource allocation and scheduling, and problem of interference coordination and control are solved, the throughput and performance of communication system are greatly improved.
-
公开(公告)号：WO2008122183A1
公开(公告)日：2008-10-16
申请号：PCT/CN2007/071308
申请日：2007-12-21
Applicant: 杭州华三通信技术有限公司 , 于洋
Inventor： 于洋
CPC classification number: H04J3/1694 , H04L12/2801 , H04L12/2861 , H04L12/2878 , H04L12/2898 , H04N7/17309 , H04N21/239 , H04N21/6168
Abstract: A data transmission method, a Coaxial-cable Line Terminal (CLT) and a Coaxial-cable Network Unit (CNU) are disclosed. The method includes steps of: allocating corresponding upstream occupy time slot to every CNU; doing upstream data sending process in corresponding time slot at every CNU. CLT and CNU both have medium access control (MAC) layer processing unit and physical (PHY) layer processing unit. This invention avoids collision between sending upstream data from each CNU, realizes allocation of shared transmitting medium in EPCN system, and provides normal transmission on physical layer in EPCN system.
-
公开(公告)号：WO2008122169A1
公开(公告)日：2008-10-16
申请号：PCT/CN2007/002662
申请日：2007-09-06
Applicant: 杭州华三通信技术有限公司 , 于洋
Inventor： 于洋
IPC: H04B3/00
CPC classification number: H04B3/52 , H04L12/2801 , H04L69/40
Abstract: A method for realizing the Ethernet-data uplink transmission over a coaxial network, includes: a CNU determines the transmission path loss of the data between the CNU and a CLT (206); the CNU determines the uplink data transmitting level according to the transmission path loss determined (207); and then, the CNU transmits the uplink data using the uplink data transmitting level determined (208). Also a CNU for applying the method, includes: a path loss determining unit, a transmitting level determining unit, and a transceiver unit. Also a CLT for applying the method, includes: a downlink data processing unit and a transceiver unit.
-
公开(公告)号：WO2008095363A1
公开(公告)日：2008-08-14
申请号：PCT/CN2007/002460
申请日：2007-08-15
Applicant: 杭州华三通信技术有限公司 , 于洋 , 李渭洲
IPC: H04L29/00
CPC classification number: H04L12/66 , H04B7/2643
Abstract: A method for transmitting data in coax network and the transmission device thereof are provided. An access point and the multiple coaxial ends that connect with the access point through the corresponding branch devices are included in the coax distribution network. The upstream and downstream data are transmitted over the same physical path between the access point and the coaxial ends in the coax distribution network. The method includes the following steps: S1, the whole time for transmitting the information over the physical path is divided into the time slices which constitute the upstream or downstream data transmission path respectively; S2, the upstream or downstream data transmitted between the Ethernet access point and each coaxial end are transmitted in different time slices. Based on the reconstruction of the Ethernet physical layer in the coax distribution network, the upstream and downstream data are transmitted over the same physical path by using the method of time division multiplex access and for upstream direction, the communication over the MAC layer between the Ethernet access point and the multiple coaxial ends is implemented by using the MPCP protocol.
-
公开(公告)号：WO2008086671A1
公开(公告)日：2008-07-24
申请号：PCT/CN2007/002154
申请日：2007-07-13
Applicant: 杭州华三通信技术有限公司 , 于洋 , 李渭洲
IPC: H04L12/46
CPC classification number: H04L25/0264
Abstract: An adaptation method for ethernet signal transmission includes the following steps: magnify and differential/single-end transform the sending signal from ethernet physical layer's chips, whose magnifying amplitude is based upon the maximum attenuation among coaxial terminals; and magnify and single-end/differential transform the receiving signal from coaxial cable networks, whose magnifying amplitude is based upon the testing result of its voltage amplitude. An adaptation apparatus for ethernet signal transmission is also included. Access points of the ethernet can be interconnected with coaxial terminals, and ethernet can transmit network signals under the coaxial network application environment through said method or apparatus.
-
Patent Agency Ranking
公开(公告)号：WO2007079680A1
公开(公告)日：2007-07-19
申请号：PCT/CN2007/000079
申请日：2007-01-09
Applicant: 上海原动力通信科技有限公司 , 孙韶辉 , 于洋 , 王映民
IPC: H04L7/02
CPC classification number: H04L27/2657 , H04L7/10 , H04L27/2675 , H04L27/2684
Abstract: A frequency offset correction method for wideband time division duplex cell communication system includes: receiving time domain sequences of the two pilot symbols having the scheduled interval in the time slot of transmitting broadcast channel; performing conjugate correlated operation between the two received pilot time domain sequences and the locally stored pilot time domain sequences corresponding to the pilot symbol; and performing the frequency offset correction according to the operation result. A method for cell first searching includes cell coarse synchronization , cell precise synchronization, cell coarse frequency offset correction and cell precise frequency offset correction, and the above frequency offset correction method is used to perform the cell precise frequency offset correction . The present invention increases the precision of frequency offset estimate in the user terminal, reduces the realization complexity at the same time, and provides an effective solution for realizing downlink synchronization and frequency offset correction by wideband time division duplex cell communication system.
-
公开(公告)号：WO2006114032A1
公开(公告)日：2006-11-02
申请号：PCT/CN2005/001985
申请日：2005-11-24
Applicant: 杭州华为三康技术有限公司 , 于洋 , 王玮
CPC classification number: H04L69/324 , H04L12/40136
Abstract: An apparatus is for multiplexing and demultiplexing in physical layer of the Ethernet. The multiplexing and demultiplexing apparatus comprises a conversion unit for interconverting the signal of the physical layer and the signal of the MAC layer, and a multiplexing and demultiplexing unit. And a method for multiplexing, demultiplexing and multiplexing and demultiplexing the signal of the physical layer in the Ethernet comprises the step of: in the uplink, converting the low rate physical layer signal to the low rate MAC signal, setting and storing the port tag, and then multiplexing the MAC signal to the high rate MAC signal; in the downlink, demultiplexing the high rate MAC signal to the low rate MAC signal, reading the low rate MAC signal and the port tag by the low clock signal, determining the downlink port based on the port tag, and outputting the low rate MAC signal. The invention reaches the arm, by above described apparatus and method, that one or a few high rate uplink interfaces can respond to low rate downlink physical interfaces. An apparatus is for series multiplexing in the physical layer of the Ethernet and the method thereof.
-
公开(公告)号：WO2013056533A1
公开(公告)日：2013-04-25
申请号：PCT/CN2012/073328
申请日：2012-03-30
Applicant: 沈阳远大铝业工程有限公司 , 王增永 , 董卫平 , 于洋
Abstract: 一种单元幕墙分体组合式板块，包括顶部单元板块（1）、底部单元板块（3）和活动单元板块（2），活动单元板块上横框（8）与顶部单元板块下横框（4）的结构相同，活动单元板块下横框（9）与底部单元板块上横框(13）的结构相同，活动单元板块下横框（9）利用自重支撑（11）与底部单元板块上横框（13）连接，活动单元板块（2）的插接式装饰台板（12）与底部单元板块（3）固定连接在一起，活动单元板块（2）的限位铝条（6）和风荷载连接件（5）分别与顶部单元板块（1）固定连接在一起。
-
-
公开(公告)号：WO2009097805A1
公开(公告)日：2009-08-13
申请号：PCT/CN2009/070280
申请日：2009-01-22
Applicant: 大唐移动通信设备有限公司 , 于洋 , 孙韶辉 , 王映民
IPC: H04L27/26
CPC classification number: H04L5/0044 , H04L1/04 , H04L1/08 , H04L5/0007 , H04L27/2626
-
-
-
-
-
-
-
-
-
Search Results
43
records
(took 0.02 seconds)
