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1. 发明公开

EP1661274A2 SYNCHRONIZATION IN A BROADCAST OFDM SYSTEM USING TIME DIVISION MULTIPLEXED PILOTS 审中-公开
标题翻译：同步在广播OFDM系统时间复用的导频信号
公开(公告)号：EP1661274A2
公开(公告)日：2006-05-31
申请号：EP04782967.6
申请日：2004-09-01
申请人： Qualcomm, Incorporated
发明人： LING, Fuyun , GUPTA, Alok , KRISHNAMOORTHI, Raghuraman , MURALI, Ramaswamy , VIJAYAN, Rajiv , VRCELJ, Bojan
IPC分类号： H04J1/00
CPC分类号： H04L27/2657 , H04L5/005 , H04L25/022 , H04L27/2613 , H04L27/2662 , H04L27/2665 , H04L2027/003
摘要： In an OFDM system, a transmitter (120) broadcasts a first TDM pilot on a first set of subbands followed by a second TDM pilot on a second set of subbands in each frame. The subbands in each set are selected from among N total subbands such that (1) an OFDM symbol for the first TDM pilot contains at least Sl identical pilot-1 sequences of length Ll and (2) an OFDM symbol for the second TDM pilot contains at least S2 identical pilot-2 sequences of length L2, where L2 > Ll, Sl x Ll = N, and S2 x L2 = N. The transmitter (120) may also broadcast an FDM pilot. A receiver ( 170) processes the first TDM pilot to obtain frame timing (e.g., by performing correlation between different pilot-1 sequences) and further processes the second TDM pilot to obtain symbol timing (e.g., by detecting for the start of a channel impulse response estimate derived from teh second TDM pilot).

2. 发明公开

EP1685670A2 MULTIPLEXING AND TRANSMISSION OF MULTIPLE DATA STREAMS IN A WIRELESS MULTI-CARRIER COMMUNICATION SYSTEM 审中-公开
标题翻译：复用和多数据流在无线多载波通信系统中发射
公开(公告)号：EP1685670A2
公开(公告)日：2006-08-02
申请号：EP04783049.2
申请日：2004-09-02
申请人： QUALCOMM INCORPORATED
发明人： VIJAYAN, Rajiv , KHANDEKAR, Aamod , LING, Fuyun , WALKER, Kent , MURALI, Ramaswamy
IPC分类号： H04L1/00
CPC分类号： H04W52/0209 , H04B7/12 , H04L1/0057 , H04L1/0065 , H04L1/0071 , H04L1/0083 , H04L5/0007 , H04L5/0044 , H04L5/0048 , H04L5/0053 , H04L5/06 , H04L25/0224 , H04L27/2602 , H04N21/2383 , H04N21/4382 , H04N21/6112 , H04W4/06 , H04W28/06 , H04W72/04 , Y02D70/166 , Y02D70/168 , Y02D70/442
摘要： Techniques for multiplexing and transmitting multiple data streams are described. Transmission of the multiple data streams occurs in "super-frames". Each super-frame has a predetermined time duration and is further divided into multiple (e.g., four) frames. Each data block for each data stream is outer encoded to generate a corresponding code block. Each code block is partitioned into multiple subblocks, and each data packet in each code block is inner encoded and modulated to generate modulation symbols for the packet. The multiple subblocks for each code block are transmitted in the multiple frames of the same super-frame, one subblock per frame. Each data stream is allocated a number of transmission units in each super-frame and is assigned specific transmission units to achieve efficient packing. A wireless device can select and receive individual data streams.

3. 发明公开

EP1682975A2 METHOD AND APPARATUS FOR SEAMLESSLY SWITCHING RECEPTION BETWEEN MULTIMEDIA STREAMS IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
标题翻译：方法和设备的无缝切换接待多媒体流之间的无线通信系统
公开(公告)号：EP1682975A2
公开(公告)日：2006-07-26
申请号：EP04795971.3
申请日：2004-10-22
申请人： QUALCOMM INCORPORATED
发明人： MURALI, Ramaswamy , WALKER, Kent G. , VIJAYAN, Rajiv
IPC分类号： G06F1/00
CPC分类号： H04N5/4401 , H04N5/50 , H04N21/41407 , H04N21/4345 , H04N21/4384 , H04N21/44222
摘要： Techniques to seamlessly switch reception between multimedia programs are described. For 'continued decoding', a wireless device continues to receive, decode, decompress, and (optionally) display a current program, even after a new program has been selected, until overhead information needed to decode the new program is received. After receiving the overhead information, the wireless device decodes the new program but continues to decompress the current program. The wireless device decompresses the new program after decoding this program. For 'early decoding', the wireless device receives a user input and identifies a program with potential for user selection. The identified program may be the one highlighted by the user input or a program anticipated to be selected based on the user input. The wireless device initiates decoding of the identified program, prior to its selection, so that the program can be decompressed and displayed earlier if it is subsequently selected.

4. 发明公开

EP1678906A1 FREQUENCY DIVISION MULTIPLEXING OF MULTIPLE DATA STREAMS IN A WIRELESS MULTI-CARRIER COMMUNICATION SYSTEM 审中-公开
标题翻译：在无线多载波通信系统频率复用多个数据流
公开(公告)号：EP1678906A1
公开(公告)日：2006-07-12
申请号：EP04817335.5
申请日：2004-10-21
申请人： QUALCOMM INCORPORATED
发明人： VIJAYAN, Rajiv , WALKER, Kent, G. , KRISHNAMOORTHI, Raghuraman , MURALI, Ramaswamy
IPC分类号： H04L27/26 , H04L5/02 , H04L1/00
CPC分类号： H04L5/0064 , H04L5/0007 , H04L5/0039 , H04L5/0046 , H04L5/0048 , H04L25/0226 , H04L27/2655
摘要： Techniques for multiplexing multiple data streams using frequency division multiplexing (FDM) in an OFDM system are described. M disjoint 'interlaces' are formed with U usable subbands. Each interlace is a different set of S subbands, where . The subbands for each interlace are interlaced with the subbands for each of the other interlaces. M slots may be defined for each symbol period and assigned slot indices 1 through M. The slot indices may be mapped to interlaces such that (1) frequency diversity is achieved for each slot index and (2) the interlaces used for pilot transmission have varying distances to the interlaces used for each slot index, which improves channel estimation performance. Each data stream may be processed as data packets of a fixed size, and different numbers of slots may be used for each data packet depending on the coding and modulation scheme used for the data packet.

5. 发明公开

EP1771961A2 SYSTEM AND METHOD FOR INTERLEAVING 审中-公开
标题翻译：方法和处理器插槽中的嵌套分配
公开(公告)号：EP1771961A2
公开(公告)日：2007-04-11
申请号：EP05776851.7
申请日：2005-07-29
申请人： QUALCOMM INCORPORATED
发明人： WANG, Michael Mao , LING, Fuyun , MURALI, Ramaswamy , VIJAYAN, Rajiv
IPC分类号： H04L1/00
CPC分类号： H04L1/0071 , H03M13/27 , H03M13/271 , H03M13/2757 , H03M13/276 , H03M13/2771 , H04L1/00 , H04L1/0041 , H04L1/0066 , H04L1/007 , H04L5/0007 , H04L5/0042 , H04L5/0044 , H04L5/0048 , H04L5/0083 , H04L25/0226 , H04L27/2607 , H04L27/261 , H04L27/2626 , H04L27/2656 , H04L27/2662
摘要： A system and method for time diversity uses interleaving. To simplify the operation at both transmitters and receivers, a formula can be used to determine the mapping from slot to interlace at a given OFDM symbol time.

6. 发明公开

EP1751906A2 MULTIPLEXING OF W-CDMA AND OFDM SIGNALS IN A WIRELESS COMMUNICATION SYSTEM 有权转让
标题翻译： W-CDMA和OFDM信号在无线通信系统中的复用
公开(公告)号：EP1751906A2
公开(公告)日：2007-02-14
申请号：EP05756553.3
申请日：2005-06-03
申请人： Qualcomm Incorporated
发明人： AGRAWAL, Avneesh , MALLADI, Durga P. , STAMOULIS, Anastasios , MANTRAVADI, Ashok , MURALI, Ramaswamy
IPC分类号： H04L5/02
摘要： Frame structures and transmission techniques for a wireless communication system are described. In one frame structure, a super-frame includes multiple outer-frames, and each outer-frame includes multiple frames, and each frame includes multiple time slots. The time slots in each super-frame are allocated for downlink and uplink and for different radio technologies (e.g., W-CDMA and OFDM) based on loading. Each physical channel is allocated at least one time slot in at least one frame of each outer-frame in the super-frame. An OFDM waveform is generated for each downlink OFDM slot and multiplexed onto the slot. A W-CDMA waveform is generated for each downlink W-CDMA slot and multiplexed onto the slot. A modulated signal is generated for the multiplexed W-CDMA and OFDM waveforms and transmitted on the downlink. Each physical channel is transmitted in bursts. The slot allocation and coding and modulation for each physical channel can change for each super-frame.
摘要翻译：描述了用于无线通信系统的帧结构和传输技术。在一种帧结构中，超帧包括多个外层帧，每个外层帧包含多个帧，每个帧包含多个时隙。每个超帧中的时隙被分配用于下行链路和上行链路以及基于负载的不同无线电技术（例如，W-CDMA和OFDM）。每个物理信道在超帧中的每个外帧的至少一个帧中被分配至少一个时隙。为每个下行链路OFDM时隙生成OFDM波形并复用到时隙。为每个下行W-CDMA时隙生成W-CDMA波形并复用到时隙。为多路复用的W-CDMA和OFDM波形生成调制信号并在下行链路上发送。每个物理信道都以突发方式传输。对于每个超帧，每个物理信道的时隙分配和编码以及调制可以改变。

7. 发明公开

EP1733495A2 TRANSMISSION OF OVERHEAD INFORMATION FOR RECEPTION OF MULTIPLE DATA STREAMS 审中-公开
标题翻译：开销信息的进行接收多个数据流的传输
公开(公告)号：EP1733495A2
公开(公告)日：2006-12-20
申请号：EP04796065.3
申请日：2004-10-21
申请人： QUALCOMM INCORPORATED
发明人： VIJAYAN, Rajiv , WALKER, Kent, G. , LANE, Richard, D. , MURALI, Ramaswamy
IPC分类号： H04L1/00
CPC分类号： H04L5/0091 , H04L5/0007 , H04L5/0082 , H04L5/0094
摘要： Techniques for transmitting overhead information to facilitate efficient reception of individual data streams are described. A base station may transmit multiple data streams on multiple data channels (or MLCs). The MLCs may be transmitted at different times and on different frequency subbands. The time-frequency location of each MLC may change over time. The overhead information indicates the time-frequency location of each MLC and may be sent as 'composite' and 'embedded' overhead information. The composite overhead information indicates the time-frequency locations of all MLCs and is sent periodically in each super-frame. A wireless device receives the composite overhead information, determines the time-frequency location of each MLC of interest, and receives each MLC at the indicated time-frequency location. The embedded overhead information for each MLC indicates the time-frequency location of that MLC in the next super-frame and is transmitted along with the payload of the MLC in the current super-frame.

8. 发明授权

EP1751906B1 FRAME STRUCTURES WITH A MIX OF W-CDMA AND OFDM TIME SLOTS 有权转让
公开(公告)号：EP1751906B1
公开(公告)日：2020-11-18
申请号：EP05756553.3
申请日：2005-06-03
申请人： Qualcomm Incorporated
发明人： AGRAWAL, Avneesh , MALLADI, Durga P. , STAMOULIS, Anastasios , MANTRAVADI, Ashok c/o QUALCOMM Incorporated , MURALI, Ramaswamy
IPC分类号： H04B7/26 , H04L1/00 , H04L5/14 , H04W88/10 , H04L27/26 , H04W92/10

9. 发明授权

EP1771962B1 SYSTEM AND METHOD FOR DIVERSITY INTERLEAVING 失效
公开(公告)号：EP1771962B1
公开(公告)日：2018-06-13
申请号：EP05777259.2
申请日：2005-07-29
申请人： Qualcomm Incorporated
发明人： WANG, Michael, Mao , LING, Fuyun , MURALI, Ramaswamy , VIJAYAN, Rajiv
IPC分类号： H04L1/00
CPC分类号： H04L1/0071 , H01R24/38 , H03M13/27 , H03M13/271 , H03M13/2757 , H03M13/276 , H03M13/2771 , H04L1/00 , H04L1/0041 , H04L1/0066 , H04L1/007 , H04L5/0007 , H04L5/0042 , H04L5/0044 , H04L5/0048 , H04L5/0083 , H04L25/0226 , H04L27/2607 , H04L27/261 , H04L27/2626 , H04L27/2656 , H04L27/2662
摘要： A method for improving frequency diversity in an OFDM system using interleaved interlaces for constellation symbol interleaving comprises interleaving a number of subcarriers of an interlace in a bit reversal fashion and interleaving a number of interlaces in the bit reversal fashion.

10. 发明公开

EP1751902A1 CODING AND MODULATION FOR BROADCAST AND MULTICAST SERVICES IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
标题翻译： CODIERUNG UND MODULATIONFÜRBROADCAST-UND MULTICAST-DIENSTE IN EINEM DRAHTLOSEN KOMMUNIKATIONSSYSTEM
公开(公告)号：EP1751902A1
公开(公告)日：2007-02-14
申请号：EP05756497.3
申请日：2005-06-03
申请人： Qualcomm Incorporated
发明人： AGRAWAL, Avneesh , MALLADI, Durga, P. , STAMOULIS, Anastasios , MANTRAVADI, Ashok , MURALI, Ramaswamy
IPC分类号： H04L1/00
CPC分类号： H04W88/10 , H04B7/2656 , H04L1/0083 , H04L5/14 , H04L27/2602 , H04W92/10 , Y02D70/1222 , Y02D70/1242 , Y02D70/1244 , Y02D70/21 , Y02D70/449
摘要： Frame structures and transmission techniques for a wireless communication system are described. In one frame structure, a super-frame includes multiple outer-frames, and each outer-frame includes multiple frames, and each frame includes multiple time slots. The time slots in each super-frame are allocated for downlink and uplink and for different radio technologies (e.g., W-CDMA and OFDM) based on loading. Each physical channel is allocated at least one time slot in at least one frame of each outer-frame in the super-frame. An OFDM waveform is generated for each downlink OFDM slot and multiplexed onto the slot. A W-CDMA waveform is generated for each downlink W-CDMA slot and multiplexed onto the slot. A modulated signal is generated for the multiplexed W-CDMA and OFDM waveforms and transmitted on the downlink. Each physical channel is transmitted in bursts. The slot allocation and coding and modulation for each physical channel can change for each super-frame.
摘要翻译：描述了用于无线通信系统的帧结构和传输技术。在一个帧结构中，超帧包括多个外帧，并且每个外帧包括多个帧，并且每个帧包括多个时隙。每个超帧中的时隙基于加载被分配用于下行链路和上行链路以及不同的无线电技术（例如，W-CDMA和OFDM）。每个物理信道在超帧中的每个外帧的至少一个帧中被分配至少一个时隙。为每个下行链路OFDM时隙生成OFDM波形并复用到时隙上。为每个下行链路W-CDMA时隙生成W-CDMA波形并复用到时隙上。为多路复用的W-CDMA和OFDM波形生成调制信号并在下行链路上发送。每个物理信道以突发方式传输。对于每个超帧，每个物理信道的时隙分配和编码和调制可以改变。

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