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公开(公告)号：WO2005025120A8
公开(公告)日：2005-05-19
申请号：PCT/SE2004001190
申请日：2004-08-11
Applicant: ERICSSON TELEFON AB L M
Inventor： AXNAES JOHAN , CRAIG STEPHEN , CHEN DAYONG , ERIKSSON STEFAN
CPC classification number: H04L1/0003 , H04L1/203
Abstract: The invention discloses a mobile-unit-assisted modulation scheme management, in which a mobile unit (100) performs signal quality measurements on a communications link (410), over which data modulated with a first modulation scheme is communicated. The mobile unit (100) determines a first link quality measure for this first modulation. Furthermore, the mobile unit (100) estimates second quality measure(s) for currently non-employed modulation scheme(s) based on this first quality measure. Selection information is then generated based on this first quality measure and the second quality estimate(s). This quality measure estimation is performed based on the capabilities and the particular modulation scheme versions of the mobile unit (100).
Abstract translation: 本发明公开了一种移动单元辅助的调制方案管理，其中移动单元（100）在通信链路（410）上执行信号质量测量，通过该通信链路传送用第一调制方案调制的数据。 移动单元（100）为该第一调制确定第一链路质量度量。 此外，移动单元（100）基于该第一质量度量来估计当前未使用的调制方案的第二质量度量。 然后基于该第一质量度量和第二质量估计生成选择信息。 该质量测量估计是基于移动单元（100）的能力和特定调制方案版本来执行的。
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2.发明申请
公开(公告)号：WO0205434A3
公开(公告)日：2002-06-20
申请号：PCT/SE0101605
申请日：2001-07-10
Applicant: ERICSSON TELEFON AB L M
Inventor： FELI EVIN , CHEN DAYONG
CPC classification number: H04L1/1829 , H03M13/3738 , H03M13/3776 , H04L1/0068 , H04L1/1812
Abstract: Methods, systems, baseband processors, mobile terminals and base stations are provided for decoding a punctured coded signal are provided. The signal is received to provide received symbols, Symbol positions associated with punctured locations are initialized to default symbol values. The received symbols and the default symbol values are error correction decoded to provide first signal estimates. Punctured location symbol estimates are generated based on the first signal estimates and the received symbols are combined with the punctured location estimates placed in corresponding punctured locations. The combined received symbols with the punctured location symbol estimates are error correction decoded to provide second signal estimates.
Abstract translation: 提供了用于解码穿孔编码信号的方法，系统，基带处理器，移动终端和基站。 接收信号以提供接收的符号，与穿孔位置相关联的符号位置被初始化为默认符号值。 对接收的符号和默认符号值进行纠错解码以提供第一信号估计。 基于第一信号估计产生穿刺位置符号估计，并且将接收的符号与放置在相应的穿孔位置中的穿孔位置估计值组合。 具有穿孔位置符号估计的组合接收符号被解码以提供第二信号估计。
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公开(公告)号：WO2011073915A3
公开(公告)日：2011-10-13
申请号：PCT/IB2010055822
申请日：2010-12-15
Applicant: ERICSSON TELEFON AB L M , CHEN DAYONG
Inventor： CHEN DAYONG
CPC classification number: H04L25/0212 , H04L25/0224 , H04L25/025 , H04L25/03299 , H04L25/03993
Abstract: A hybrid channel estimator for a wireless communication system receiver includes both correlation based and least squares based channel estimators. The correlation estimator is used when signal quality is low or noise is colored, The least squares estimator is used when signal quality is high or noise is white, ?n interference suppression filter improves signal quality by suppressing interference in a received signal. Generally, correlation channel estimation is performed initially, when signal quality is low and noise is colored, and interference suppression filtering is performed to increase signal quality by removing certain portion of interference and whitening the overall impairment spectrum. These may be done iteratively. When the signal quality improves, least squares channel estimation is performed, which may also be iterative. The training sequence and noise may be whitened prior to performing least squares channel estimation, which is the final operation before channel estimates are forwarded to a demodulator.
Abstract translation: 用于无线通信系统接收机的混合信道估计器包括基于相关和基于最小二乘的信道估计器。 当信号质量较低或噪声着色时，使用相关估计器。当信号质量较高或噪声为白色时，使用最小二乘估计器。干扰抑制滤波器通过抑制接收信号中的干扰来提高信号质量。 通常，当信号质量低并且噪声被着色时，相关信道估计首先被执行，并且通过去除特定部分的干扰并且使整体损伤谱白化来执行干扰抑制滤波以提高信号质量。 这些可以迭代完成。 当信号质量改善时，执行最小二乘信道估计，这也可以是迭代的。 在执行最小二乘信道估计之前，训练序列和噪声可能变白，这是信道估计被转发到解调器之前的最终操作。
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4.发明申请METHOD AND APPARATUS FOR COMBINED PACKET RETRANSMISSION AND SOFT DECODING OF COMBINED PACKETS IN A WIRELESS COMMUNICATION NETWORK 审中-公开在无线通信网络中组合分组的组合重新配置和软解码的方法和装置
公开(公告)号：WO2008140387A3
公开(公告)日：2009-01-08
申请号：PCT/SE2008050377
申请日：2008-04-02
Applicant: ERICSSON TELEFON AB L M
Inventor： HAFEEZ ABDULRAUF , CHEN DAYONG , HUI DENNIS
IPC: H04L1/18
CPC classification number: H04L1/1845 , H04L1/1812
Abstract: In a wireless communication network using point-to-point or point-to-multipoint communications, this disclosure teaches the use of combined packets for retransmission and corresponding soft value processing at a receiver, wherein combined packets are formed as the logical combination of two or more previously transmitted packets and allow the receiver to use a single combined packet to correct one or more failed packets. For example, with the combined packet retransmission and corresponding soft value receiver processing as taught herein, a given receiver can use a given combined packet to correct bit errors in all (failed) packets comprising the combined packet as long as the bit errors in a failed packet do not overlap (or align) with bit errors in the other failed packets comprising the combined packet.
Abstract translation: 在使用点对点或点对多点通信的无线通信网络中，本公开教导了在接收机处使用组合分组进行重传和对应的软值处理，其中组合分组被形成为两个或 更先前传输的分组，并允许接收机使用单个组合分组来校正一个或多个故障分组。 例如，通过组合的分组重传和如本文所教导的相应的软值接收器处理，给定的接收机可以使用给定的组合分组来校正包括组合分组的所有（失败的）分组中的比特错误，只要失败的比特错误 分组不与包括组合分组的其他故障分组中的比特错误重叠（或对齐）。
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公开(公告)号：WO2010125459A3
公开(公告)日：2011-01-06
申请号：PCT/IB2010001000
申请日：2010-04-30
Applicant: ERICSSON TELEFON AB L M , CHEN DAYONG
Inventor： CHEN DAYONG
CPC classification number: H04L1/0002 , H04L1/0009 , H04L1/0017 , H04L1/0025 , H04L1/20 , H04L27/2089 , H04W24/10 , H04W52/143 , H04W52/346 , H04W88/08
Abstract: A method and apparatus in a base station for jointly controlling sub¬ channel transmission power and assigned codec modes for a first and second mobile station utilizing Voice services over Adaptive Multi-user channel on One Slot (VAMOS). The base station receives signal quality information reports from the mobile stations every 480 ms using the Slow Associated Control Channel (SACCH), and receives codec mode requests from the mobile stations every 40 ms using Adaptive Multi-Rate (AMR) in-band signaling. The base station associates the requested codec modes with estimated levels of speech quality currently being experienced by the first and second mobile stations. The base station then allocates sub-channel transmission power and assigns codec modes to the first and second mobile stations based on the estimated levels of speech quality associated with the requested codec modes and the signal quality reports.
Abstract translation: 一种用于在一个时隙（VAMOS）上通过自适应多用户信道利用语音服务的第一和第二移动台共同控制子信道传输功率和分配的编解码器模式的基站中的方法和装置。 基站使用慢关联控制信道（SACCH）每480ms从移动台接收信号质量信息报告，并且使用自适应多速率（AMR）带内信令从40ms接收来自移动台的编解码器模式请求。 基站将请求的编解码方式与当前由第一和第二移动台经历的语音质量的估计级别相关联。 基站然后基于与所请求的编解码器模式和信号质量报告相关联的所估计的语音质量水平来分配子信道传输功率并将编解码器模式分配给第一和第二移动站。
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Patent Agency Ranking
公开(公告)号：CA2758528C
公开(公告)日：2017-11-07
申请号：CA2758528
申请日：2010-04-21
Applicant: ERICSSON TELEFON AB L M (PUBL)
Inventor： CHEN DAYONG
Abstract: A demodulator is provided that functions as a reduced-state equalizer and pro-duces reliable soft bit values. According to an embodiment, soft bit values are generated for a sequence of transmitted symbols using a demod-ulator by updating an M-state trellis managed by the demodulator response e to a transition from symbol time n-1 to symbol time n, where M is a function of the number of bits per symbol in the sequence of transmitted symbols. Survivor met-rics associated with the M states of the trellis are saved each symbol time so that the demodulator can calculate soft bit values with regard to transi-tions from symbol time n + D-1 to symbol time n+ D. The survivor metrics indicate the probabil-ity that each respective state represents the trans-mitted symbol associated with symbol time n+D-1. The trellis is traced back through to cal-culate soft bit values for a symbol detected at symbol time n-D based on survivor metrics saved for the M states at symbol time n-D.
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公开(公告)号：AU7119201A
公开(公告)日：2002-01-21
申请号：AU7119201
申请日：2001-07-10
Applicant: ERICSSON TELEFON AB L M
Inventor： FELI EVIN , CHEN DAYONG
Abstract: Methods, systems, baseband processors, mobile terminals and base stations are provided for decoding a punctured coded signal are provided. The signal is received to provide received symbols. Symbol positions associated with punctured locations are initialized to default symbol values. The received symbols and the default symbol values are error correction decoded to provide first signal estimates. Punctured location symbol estimates are generated based on the first signal estimates and the received symbols are combined with the punctured location symbol estimates placed in corresponding punctured locations. The combined received symbols with the punctured location symbol estimates are error correction decoded to provide second signal estimates.
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公开(公告)号：SG175046A1
公开(公告)日：2011-11-28
申请号：SG2011072154
申请日：2010-04-30
Applicant: ERICSSON TELEFON AB L M
Inventor： CHEN DAYONG
Abstract: A method and apparatus in a base station for jointly controlling sub-channel transmission power and assigned codec modes for a first and second mobile station utilizing Voice services over Adaptive Multi-user channel on One Slot (VAMOS). The base station receives signal quality information reports from the mobile stations every 480 ms using the Slow Associated Control Channel (SACCH), and receives codec mode requests from the mobile stations every 40 ms using Adaptive Multi-Rate (AMR) in-band signaling. The base station associates the requested codec modes with estimated levels of speech quality currently being experienced by the first and second mobile stations. The base station then allocates sub-channel transmission power and assigns codec modes to the first and second mobile stations based on the estimated levels of speech quality associated with the requested codec modes and the signal quality reports.
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公开(公告)号：DE602004019293D1
公开(公告)日：2009-03-19
申请号：DE602004019293
申请日：2004-08-11
Applicant: ERICSSON TELEFON AB L M
Inventor： AXNAES JOHAN , CRAIG STEPHEN , CHEN DAYONG , ERIKSSON STEFAN
Abstract: The invention involves selection of modulation scheme for a mobile unit (100) having access to a link quality enhancing algorithm (130) operable only on data modulated using a subset of the available modulation schemes. The mobile unit (100) performs signal quality measurements on a communications link (410), over which data modulated with a first modulation scheme is communicated. A link quality measure is then determined for this first modulation. A quality enhancement due to operation of the algorithm (130) is also determined. This quality measure and the quality enhancement are used for generating decision information, which is reported to the network (200). There the information is used for estimating link quality measure(s) of currently non-employed modulation(s) for the mobile unit (100). The selection of a modulation scheme for the communications link is then performed based on the decision information and the estimated quality measure(s).
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公开(公告)号：AT422121T
公开(公告)日：2009-02-15
申请号：AT04775307
申请日：2004-08-11
Applicant: ERICSSON TELEFON AB L M
Inventor： AXNAES JOHAN , CRAIG STEPHEN , CHEN DAYONG , ERIKSSON STEFAN
Abstract: The invention involves selection of modulation scheme for a mobile unit (100) having access to a link quality enhancing algorithm (130) operable only on data modulated using a subset of the available modulation schemes. The mobile unit (100) performs signal quality measurements on a communications link (410), over which data modulated with a first modulation scheme is communicated. A link quality measure is then determined for this first modulation. A quality enhancement due to operation of the algorithm (130) is also determined. This quality measure and the quality enhancement are used for generating decision information, which is reported to the network (200). There the information is used for estimating link quality measure(s) of currently non-employed modulation(s) for the mobile unit (100). The selection of a modulation scheme for the communications link is then performed based on the decision information and the estimated quality measure(s).
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