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公开(公告)号：JP2002141864A
公开(公告)日：2002-05-17
申请号：JP2001243063
申请日：2001-08-10
Applicant: LUCENT TECHNOLOGIES INC
Inventor： TERRY SHIIFON CHEN , HUANG CHING YAO , JIANG FRANCES , KUZYSZYN STEVE MYKOLA , YANG YANG
IPC: H04L29/08 , G10L19/012 , H04B7/26 , H04M3/00 , H04Q7/38
Abstract: PROBLEM TO BE SOLVED: To more efficiently use a communication link between elements in a communication system. SOLUTION: During a silent period, a message containing comfortable noises is not transmitted but a message instructing the generating of comfortable noises to the element is transmitted so that the communication link between the elements in the communication system can be more efficiently used. The message instructing the generation of comfortable noises to the element is smaller than the message containing comfortable noises. As a result, the message for generating comfortable noises or command is transmitted rather than the message containing comfortable noises so that the bandwidth of the link between communication system elements can be more efficiently used.
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2.发明专利
公开(公告)号：JP2000224650A
公开(公告)日：2000-08-11
申请号：JP2000012453
申请日：2000-01-21
Applicant: LUCENT TECHNOLOGIES INC
Inventor： HUANG CHING YAO , JIANG FRANCES , KOO YUEN-YIN L
Abstract: PROBLEM TO BE SOLVED: To reduce a processing load of inter-carrier hand-off by a controller of a base station by selecting a radio frequency carrier for a subscriber on the basis of a load factor of a radio frequency related to each carrier and a prescribed threshold value to evaluate the load factor. SOLUTION: A sub-system 24 of a base station measures a 1st load level and a 2nd load level of a call transmission carrier covering a 1st geographical area and a transfer destination object carrier covering a 2nd graphical area. In the case of the 1st load level the 2nd load level and that a difference between the 1st and 2nd load levels is smaller than a prescribed threshold value, the call transmission carrier is selected, and when the difference between the load levels is smaller than a prescribed threshold value, the transfer destination object carrier is selected to permit hand-off between carriers.
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公开(公告)号：JP2000152341A
公开(公告)日：2000-05-30
申请号：JP24424199
申请日：1999-08-31
Applicant: LUCENT TECHNOLOGIES INC
Inventor： JIANG FRANCES , KUO WEN-YI
Abstract: PROBLEM TO BE SOLVED: To extend a cell size or an access range without expending high investment cost attending redesign by allowing a correction timing protocol to transmit a base station signal when between the start and the end of a retrieval window, that is, between a timing advance fetch time and a time corresponding to a bit limit of an ASIC correlation device, in addition to the timing advance fetch time. SOLUTION: This base station 30 can detect a signal sent from a mobile telephone set wherever the mobile telephone set resides in a cell 34, including position in excess of an access range resulting from bit limitation on an ASIC device without re-design of the ASIC correlation device. The signal sent by the mobile telephone set resident at a position in excess of the limit by the ASIC correlation device can be received within the retrieval window, by shifting the retrieval window and/or a base station transmission time with respect to a frame border. This can be attained through the use of the correction timing protocol.
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公开(公告)号：JP2001119343A
公开(公告)日：2001-04-27
申请号：JP2000277402
申请日：2000-09-13
Applicant: LUCENT TECHNOLOGIES INC
Inventor： ZHU PENGFEI , LIWA WANG , JIANG FRANCES , QIU ROBERT CAIMING
Abstract: PROBLEM TO BE SOLVED: To provide a method for controlling the intensity of a user unit probe signal for improving the possibility of detection by a communication system unit on a method for improving the performance of a user accessing a communication system. SOLUTION: A method for controlling a probe signal that the user unit of a communication system transmits is constituted of a state receiving information from the system unit of a communication system and a stage controlling the probe signal based on reception information. The intensity of the probe signal is controlled based on information that the user unit receives from the system unit. Since the controlled probe signal is transmitted, possibility that the signal is detected by the system unit becomes high.
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公开(公告)号：JP2000286793A
公开(公告)日：2000-10-13
申请号：JP2000069354
申请日：2000-03-13
Applicant: LUCENT TECHNOLOGIES INC
Inventor： JIANG FRANCES , KAMEL RAAFAT EDWARD , LI QUINN , SALVARANI ALEXANDRO FEDERICO , WEAVER CARL FRANCIS
IPC: H04B1/04 , H04B7/005 , H04B7/26 , H04W52/12 , H04W52/24 , H04W52/26 , H04W52/36 , H04W52/40 , H04J13/00
Abstract: PROBLEM TO BE SOLVED: To obtain a communication system whose transmission power can be controlled. SOLUTION: The power control method in a wireless communication system includes a step where a target value 130 of signal quality of a received signal 270 is decided, a step where a power controlled variable conversion coefficient 245 is obtained, a step where the target value 130 of the signal quality is converted by the power controlled variable conversion coefficient 245, a step where the signal quality value 160 of the received signal 270 is measured, a step where the measured signal quality value 160 is compared with the converted signal quality target value 260, a step where increased power of the received signal 270 is requested in response to it that the signal quality value 160 of the received signal 270 is lower than the converted signal quality target value 260, and a step where decreased power of the received signal 270 is requested in response to it that the signal quality value 160 of the received signal 270 is higher than the converted signal quality target value 260.
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Patent Agency Ranking
公开(公告)号：JP2000102068A
公开(公告)日：2000-04-07
申请号：JP24424099
申请日：1999-08-31
Applicant: LUCENT TECHNOLOGIES INC
Inventor： JIANG FRANCES , KUO WEN-YI
IPC: H04B7/155 , H04B7/26 , H04J3/06 , H04W16/26 , H04W88/08 , H04Q7/36 , H04Q7/22 , H04Q7/24 , H04Q7/26 , H04Q7/30
Abstract: PROBLEM TO BE SOLVED: To extend a cell size or an access range by a concentric base station that has relating micro cells and macro cells so as to receive a signal sent by a mobile telephone set in a corresponding cell within a limit of a retrieval window relating to a timing protocol. SOLUTION: A timing schedule 50 includes a series of frames 52-1-52-n. Each frame shares a time interval (f) and a frame border indicates a start of each frame at a time Fn in matching with a GPS time obtained by using a receiver. According to this corrected timing protocol, a base station retrieves a mobile telephone signal within a retrieval window Wn where transmission of a base station signal is started at a time Fn-q and retrieval is finished between a time Fn and a time Fn+p. Simultaneously, a mobile telephone set starts transmission of a signal at a point of time that is about a multiple of (x) of the frame time interval after the mobile telephone set starts reception of the base station signal.
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公开(公告)号：JP2002026810A
公开(公告)日：2002-01-25
申请号：JP2001141359
申请日：2001-05-11
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CHENG TERRY SI-FONG , HUANG CHING YAO , JIANG FRANCES , SALVARINI ALEXANDRO
Abstract: PROBLEM TO BE SOLVED: To provide power control intensified by adaptively adjusting a quantity for varying a ratio of a target signal to noise. SOLUTION: In this method, a signal is received from a mobile station. The standard deviation of a symbol error rate is decided and power control with the adaptive shape adjustment of the variation of ratio of a target signal to noise is parried out based on the decided standard deviation of a signal error rate and a target related to it.
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8.发明专利
公开(公告)号：JP2000358274A
公开(公告)日：2000-12-26
申请号：JP2000137226
申请日：2000-05-10
Applicant: LUCENT TECHNOLOGIES INC
Inventor： BI QI , CHIN YAO HAN , JIANG FRANCES , KOO YUEN-YIN L , SHAH AMIT
Abstract: PROBLEM TO BE SOLVED: To reduce persistent delay when access by an emergent call is tried to a wireless communication system by establishing a high priority call through the use of the parameter of a high priority class. SOLUTION: When access to a channel is requested by a wireless unit, an emergency and/or high priority durability test is started (82). Then it is decided whether a telephone number dialed to a wireless unit coincides with an emergent number, a priority number or a code (84). When it is decided that the dialed number corresponds to the emergent number, a durability test is set forth by using P which is calculated by a durability value psist (n) (88). Then a random number RP is generated at the start of an access channel slot (90), the durability test is skipped when RP is smaller than P and an access probe sequence is transmitted in accordance with the rest of an exemplary access procedure (94).
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公开(公告)号：JP2000092557A
公开(公告)日：2000-03-31
申请号：JP24423999
申请日：1999-08-31
Applicant: LUCENT TECHNOLOGIES INC
Inventor： JIANG FRANCES , KAMEL RAAFAT EDWARD , KUO WEN-YI
IPC: H04B7/04 , H04B7/26 , H04W16/26 , H04W16/30 , H04W16/32 , H04W36/08 , H04W36/38 , H04Q7/34 , H04Q7/22
Abstract: PROBLEM TO BE SOLVED: To easily expand a cell size or an access range by allowing a base station to instruct handoff based on the absolute route delay information showing the present and past positions of a mobile telephone obtained by signals from the mobile telephone. SOLUTION: The base station 80 is provided with a macro cell 84 and a micro cell 82 having a radius R82 equal to or less than a distance corresponding to the ASIC correlation device bit limitation of a mobile telephone detector. The mobile telephones 86 and 88 measure the pilot signal strength of a first frequency band of the respective base stations and send it to the base station 80. When the signal strength of the first frequency band becomes equal to or less than a threshold, the base station 80 instructs handoff to a second frequency band. In the case that the mobile telephone 86 or 88 can not measure the frequency, the base station 80 detects mobile telephone signals, obtains the absolute route delay information from the arrival time, judges the moving direction of the mobile telephone and instructs when inter-frequency handoff is to be performed. The cell size or the access range is enlarged without re-designing the ASIC correlation device requiring the large amount of costs.
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公开(公告)号：DE60120331T2
公开(公告)日：2007-05-24
申请号：DE60120331
申请日：2001-06-18
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CHENG TERRY SI-FONG , JIANG FRANCES , VITEBSKY STANLEY
Abstract: A method for determining the reverse link data Rate Limit for mobile stations active on the reverse link of a High Data Rate system is disclosed. In the ideal case, the Rate Limit is based on only the number of mobile stations located in a common sector that are actually active on the reverse link. Currently, the Rate Limit is determined from the total number of mobile stations in a common sector where the total includes mobiles that are transmitting and receiving. Thus, the current method includes mobile stations that are active on the forward link and may not be active on the reverse link. In this invention, a more optimum method of estimating the reverse link loading is obtained from calculations which includes only the mobile stations which are active on the reverse link. An estimate of the reverse link loading of the mobile stations in a common cell is obtained by adding together the data rates of the data sent from each mobile in a common sector during a common frame. This aggregate rate of data during the frame is filtered to minimize irregularities by using the moving average of an infinite impulse response filter and then normalized. The normalized result is a percentage of the maximum achievable aggregate reverse link rate. The final result is compared with a set of threshold values to obtain the maximum Rate Limit that is then set for each mobile station.
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