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31. 发明专利

CA2318722A1 A METHOD AND APPARATUS FOR TERMINATING A BURST TRANSMISSION IN A WIRELESS SYSTEM 未知
公开(公告)号：CA2318722A1
公开(公告)日：2001-03-30
申请号：CA2318722
申请日：2000-09-13
申请人： LUCENT TECHNOLOGIES INC
发明人： KUO WEN-YI , MEYERS MARTIN HOWARD
IPC分类号： H04B7/26 , H04B7/005 , H04Q7/36
摘要： In order to effectively terminate a burst transmission in a wireless system, a method and apparatus determines whether or not a burst transmission from a wireless unit to a base station should be terminated by evaluating at least one criterion related to the operation of the wireless system. Once it is determined that a burst transmission should be terminated, the transmission is terminated by lowering a target signal -to-noise ratio (SIR) by a predetermined amount. By lowering this target SIR, power control bits transmitted from the base stati on to the wireless unit instruct an extreme decrease in power of the burst transmissio n and quickly act to terminate the burst transmission.

32. 发明专利

CA2315957A1 METHOD AND APPARATUS FOR CONTROLLING POWER FOR VARIABLE-RATEVOCODED COMMUNICATIONS 未知
公开(公告)号：CA2315957A1
公开(公告)日：2001-02-26
申请号：CA2315957
申请日：2000-08-11
申请人： LUCENT TECHNOLOGIES INC
发明人： WU XIAO CHENG , WEAVER CARL FRANCIS , KUO WEN-YI , MEYERS MARTIN HOWARD , KAMEL RAAFAT EDWARD
IPC分类号： H04B7/26 , H04L1/00 , H04Q7/36 , G10L19/14
摘要： A base station assembles a frame including information bits at a vocoding rate for downlink transmission over a traffic channel as channel bits at a channel rate. The base station places at least one rate-indicating bit at a beginning of the frame for indicating the vocoding rate. The mobile station evaluates the downlink transmission with consideration of the vocoding rate indicated by the at least one rate-indicating bit. The mobile station can determine the vocoding rate by decoding the beginning of the frame to permit power control in less than one frame duration from initial receipt of the frame at the mobile station.

33. 发明专利

AU2766300A Method for improved transmission efficiency between data networks and wireless communications systems 未知
公开(公告)号：AU2766300A
公开(公告)日：2000-10-19
申请号：AU2766300
申请日：2000-04-11
申请人： LUCENT TECHNOLOGIES INC
发明人： KIANG T ROGER , MEYERS MARTIN HOWARD , KUO WEN-YI
IPC分类号： H04L29/08 , H04B7/26 , H04L12/28 , H04L12/56 , H04W28/04 , H04W28/06 , H04W28/14 , H04W88/18 , H04L12/66 , H04Q7/24
摘要： A method is provided for the establishment of a transmission protocol proxy means at an intermediate point in a communications link between the mobile user and the data node. That transmission protocol proxy means operates to intercept data packets from the data source, which may be the data node or the mobile user, buffer those packets prior to forwarding on to the intended data sink, and return an acknowledgment to the data source indicating receipt of the data packets, according to the operative transmission protocol.

34. 发明专利

CA2303715A1 METHOD FOR IMPROVED TRANSMISSION EFFICIENCY BETWEEN DATA NETWORKS AND WIRELESS COMMUNICATION SYSTEMS 未知
公开(公告)号：CA2303715A1
公开(公告)日：2000-10-15
申请号：CA2303715
申请日：2000-04-05
申请人： LUCENT TECHNOLOGIES INC
发明人： MEYERS MARTIN HOWARD , KIANG T ROGER , KUO WEN-YI
IPC分类号： H04L29/08 , H04B7/26 , H04L12/28 , H04L12/56 , H04W28/04 , H04W28/06 , H04W28/14 , H04W88/18 , H04Q7/24
摘要： A method is provided for the establishment of a transmission protocol proxy means at an intermediate point in a communications link between the mobile user and the data node. That transmission protocol proxy means operates to intercept data packets from the data source, which may be the data node or the mobile user, buffer those packets prior to forwarding on to the intended data sink, and return an acknowledgment to the data source indicating receipt of the data packets, according to the operative transmission protocol.

35. 发明专利

AU2265300A Burst duration assignment based on fading fluctuation and mobility in wireless communication systems 未知
公开(公告)号：AU2265300A
公开(公告)日：2000-10-12
申请号：AU2265300
申请日：2000-03-29
申请人： LUCENT TECHNOLOGIES INC
发明人： CHEN TSAO-TSEN , KUO WEN-YI
IPC分类号： H04W72/08 , H04Q7/20 , H04J13/00
摘要： The invention provides a novel burst duration assignment process that increases the performance and improves the throughput of communication systems. In particular, the invention provides an optimal burst duration assignment methodology such that resources are efficiently utilized and maximized in a communication system such as a code division multiple access (CDMA) system. According to the invention, burst duration is assigned based on channel fading fluctuation and user mobility in the communication system. In general, shorter burst duration is assigned to users with higher fading fluctuation and high mobility. Longer burst duration is assigned to users with lower fading fluctuation and low mobility. In a particular embodiment of the invention, the burst assignment is based on a function of duration versus fluctuation.

36. 发明专利

CA2302911A1 A METHOD OF DYNAMICALLY ADJUSTING THE DURATION OF A BURST TRANSMISSION IN WIRELESS COMMUNICATION SYSTEMS 未知
公开(公告)号：CA2302911A1
公开(公告)日：2000-10-08
申请号：CA2302911
申请日：2000-03-29
申请人： LUCENT TECHNOLOGIES INC
发明人： RAMAKRISHNA SUDHIR , CLOUTIER JOSEPH E , KUO WEN-YI
IPC分类号： H04L12/56 , H04L29/08 , H04M11/00 , H04W12/10 , H04W24/00 , H04W76/06 , H04B7/005 , H04Q7/36
摘要： A method to adjust the burst transmission duration time, in a high speed digital wireless communication system, to provide sufficient time for the transmission of data when all the data is not available at the time of transmission. According to the method of the invention, after the burst transmission is begun, the burst is maintained active as additional data is detected within a known time period following the previous detected data packet and the detected data is appended to the active burst transmission. The invention further terminates the burst duration when no additional data is detected within the redefined time period following the previous detected data packet.

37. 发明专利

AU1252300A Open loop power control for wireless mobile stations 未知
公开(公告)号：AU1252300A
公开(公告)日：2000-08-03
申请号：AU1252300
申请日：2000-01-20
申请人： LUCENT TECHNOLOGIES INC
发明人： KOO YUEN-YIN L , WEAVER CARL FRANCIS , MEYERS MARTIN HOWARD , KUO WEN-YI
IPC分类号： H04B1/7075 , H04B1/7097 , H04B7/005 , H04B7/26 , H04Q7/32 , H04Q7/22
摘要： The present invention is an apparatus and method for calculating the transmit power of a mobile station by including an interference correction term in every access probe of the mobile station to more correctly estimate the path loss. The interference correction term accounts for the presence of base station pilot signals when calculating the transmit power. Importantly, the present invention is implementable in any CDMA based communication system. In an exemplary embodiment of the present invention, a mobile station implements open loop power control by determining an interference correction term that accounts for the detection of non-active-set pilot signals, thermal noise, or non-CDMA interference, one or more of which are indicated by the detection of a given receive threshold. The mobile station then adjusts its open loop transmit power (access probe power in access state) based on the interference correction term. In a further embodiment, the interference correction term is limited to a maximum level of correction for the case when an active pilot is not detected. In an additional embodiment, the non-active-set pilot power is approximated to all received pilots other than the largest active-set pilot.

38. 发明专利

CA2279677A1 METHOD AND APPARATUS FOR ADAPTIVE SETTING OF INITIAL TRAFFIC POWER 未知
公开(公告)号：CA2279677A1
公开(公告)日：2000-03-21
申请号：CA2279677
申请日：1999-08-05
申请人： LUCENT TECHNOLOGIES INC
发明人： KAMEL RAAFAT EDWARD , KUO WEN-YI , MEYERS MARTIN HOWARD , WEAVER CARL FRANCIS
IPC分类号： H04B7/26 , H04B7/005 , H04W52/24 , H04W52/50 , H04Q7/36
摘要： A method and apparatus that permits base stations to adaptively set initial power levels in forward link traffic channels (i.e., base station to mobile unit) based on an interference measure, where the interference measure is the difference between the base station transmitted pilot E c/I o and the mobile unit received pilot E c/I o. The interference measure indicates how much interference is present from other base stations in the mobile unit's locale, mobile receiver noise and other similar sources. Call quality and system capacity are optimized since the initial power level is set in accordance with the interference environment. The method of the invention implements the adaptive setting by extracting the mobile unit received pilot E c/I o from the access message transmitted by the mobile unit. The interference measure is then determined and used by the base station to set the initial power level in the forward link traffic channel.

39. 发明专利

CA2278392A1 EXTENDED RANGE CONCENTRIC CELL BASE STATION 未知
公开(公告)号：CA2278392A1
公开(公告)日：2000-02-29
申请号：CA2278392
申请日：1999-07-22
申请人： LUCENT TECHNOLOGIES INC
发明人： JIANG FRANCES , KUO WEN-YI
IPC分类号： H04B7/155 , H04B7/26 , H04J3/06 , H04W16/26 , H04W88/08 , H04Q7/30
摘要： The present invention is a extended range concentric cell base station and a method for extending a cell size or access range without incurring ASIC correlator re-design. This is accomplished with a concentric cell base station design that incorporates multiple timing protocols. The concentric base station has associated a micro cell and a macro cell, wherein the micro and macro cells use a different timing protocol that will cause signals transmitted by mobiles within their respective cells to be received within the confines of search windows associated with the timing protocols.

40. 发明专利

BR9901113A 未知
公开(公告)号：BR9901113A
公开(公告)日：2000-01-11
申请号：BR9901113
申请日：1999-03-19
申请人： LUCENT TECHNOLOGIES INC
发明人： BERNSTEIN NEIL E , KUO WEN-YI , MEYERS MARTIN HOWARD , WANG XIAO , WEAVER CARL FRANCIS , WU XIAO CHENG
IPC分类号： H04W36/14 , H04Q7/36
摘要： Inter-frequency handoffs in a CDMA or other wireless communication system are controlled using a noise-limited coverage trigger metric which is able to distinguish between same-frequency cell boundaries and other-frequency cell boundaries in the system. The trigger metric may be generated as a function of an average signal-to-noise measure for pilot signals received at a mobile station of the system and a linear sum of the signal-to-noise measures. The signal-to-noise measures may be generated in the mobile station and included in messages transmitted from the mobile station to one or more base stations of the system. The trigger metric is used to control a handoff from a current frequency to a new frequency in an ongoing call. The trigger metric may alternatively be based on a measure of mobile receive power alone. Other aspects of the invention reduce unnecessary searching for a new frequency and decrease the likelihood of "ping-ponging" from a current frequency to a new frequency by providing additional checks in the handoff process. For example, receive power and pilot signal-to-noise measures may be generated at a mobile station for both current and new frequencies. The mobile station then continues to operate at the current frequency as long as certain predetermined threshold conditions based on the measures are satisfied.

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