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公开(公告)号：JP2001245338A
公开(公告)日：2001-09-07
申请号：JP2000396400
申请日：2000-12-27
Applicant: LUCENT TECHNOLOGIES INC
Inventor： BORST SIMON C , CHENG TERRY SI-FONG , GRANDHI SUDHEERA A , LUBACHEVSKY D BORIS , WHITING PHILIP ALFRED
Abstract: PROBLEM TO BE SOLVED: To provide a channel assignment method for a wireless communication system which includes a fixed multiple beam sophisticated function antenna system. SOLUTION: The method enhances call quality and speech capacity by integrating the dynamic channel assignment technology into the sophisticated function antenna system. The sophisticated function antenna system includes a grouped beam set, each set relates a long list to a 1st short list and each beam relates to a 2nd short list. Part of communication channels is assigned a mobile station on the basis of a short-term interference level measured per each beam of the beam set. The long list and the 1st short list are formed on the basis of long-term and short-term interference levels measured as the highest with respect to each of the plural communication channels traversing each beam in the beam set.
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公开(公告)号：JPH1079977A
公开(公告)日：1998-03-24
申请号：JP17347197
申请日：1997-06-30
Applicant: LUCENT TECHNOLOGIES INC
Inventor： ANDERSON NEFATITI , BORST SIMON C , CANNELL LYNELL E , CHENG TERRY SI-FONG , CHEW LINDSEY , GRANDHI SUDHEER A , I CHIH-LIN , KAUFMAN JOSEPH SAMUEL , LUBACHEVSKY BORIS DMITRIEVICH , NARENDRAN BALAKRISHNAN , SAND DONNA M
Abstract: PROBLEM TO BE SOLVED: To perform dynamic allocation and to obtain the growth of a simple system and a high capacity by allocating channels according to a priority that is set to a channel list as a function of long-term and short-term interference fluctuation in every cell/sector in a wireless communication network. SOLUTION: A telephone exchange center 10 which controls entire operations of a system has a dynamic channel allocating system IBDCA on an interference base and performs signal measurement, channel sequencing, call allowance, channel allocation, call maintenance, hand-off, etc. A base station 14 sequences an entire spectrum by signal intensity RSS to long-term fluctuation based on the result that the intensity RSS of a mobile communication device 20 and a carrier-to-interference ratio are measured, and further sequences several channels of the highest order based on the RSS of short-term fluctuation. Then, it allocates a channel that is sequenced based on a prescribed reference in response to a call. Thereby, a channel can dynamically and automatically be allocated to a mobile station.
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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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公开(公告)号：JPH11331930A
公开(公告)日：1999-11-30
申请号：JP5782299
申请日：1999-03-05
Applicant: LUCENT TECHNOLOGIES INC
Inventor： BORST SIMON C , CHENG TERRY SI-FONG , GRANDHI SUDHEER A , HUANG JOE , KAHN COLIN L , KUMARAN KRISHNAN , ZHANG BULIN B
Abstract: PROBLEM TO BE SOLVED: To attain effective allocation of dynamic channels by using a combination of hybrid of a measurement based DCA algorithm such as cost function based dynamic channel allocation DCA and of a reuse-distance standard algorithm. SOLUTION: A hybrid flexible channel allocation includes a measurement based dynamic channel allocation MBDCA part mounted at each cell site 102 and a cost function based dynamic channel allocation CFBDCA part of a reuse- distance standard mounted in a center data base of a mobile switching center MCB 104. At the MBDCA part, candidate channels defined to the flexible allocation are sequentially sent to the CFBDCA part operating via the center data base according to the usable up-link and down-link interference measurement value. Then a relevant channel selects one of allocation candidate channels based on its use degree set by a neighboring or nearby cell. Furthermore, a channel candidate list is collected at the site 102 based on the use information on the selected channel.
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5.发明专利
公开(公告)号：JP2001244881A
公开(公告)日：2001-09-07
申请号：JP2001010947
申请日：2001-01-19
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CHENG TERRY SI-FONG , HUANG JOE , MISRA APARAJITA , MURPHY KEVIN JOHN
Abstract: PROBLEM TO BE SOLVED: To provide an improved down-link power control system which reduces interference in a time division multiple access system resulting in power consumption increasing mutual channel interference and also increases radio system capacity. SOLUTION: A method for controlling the down-link power of a time division multiple radio system can provide different down-link transmission signal power which is different to the different time division multiple channels of a single carrier. A base station receives signal parameter data measured as to the down- link transmission signals of time division multiple channels. When the measured signal parameter data are different from the target signal parameter data, the base station determines the initial adjustment of the down-link transmission signal power of the time-division multiple channels. The base station determines the corrected adjustment of the down-link transmission power of the time- division multiple channels based upon the initial adjustment and at least one adjustment range which is adequate to achieve synchronism of the demodulation of a down-link transmission signal.
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Patent Agency Ranking
公开(公告)号：JP2000115073A
公开(公告)日：2000-04-21
申请号：JP27808699
申请日：1999-09-30
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CHENG TERRY SI-FONG , HUANG CHING YAO
Abstract: PROBLEM TO BE SOLVED: To optimize paging channel power and initial traffic channel power in CDMA by transmitting a paging message to a mobile station by radio wave by optimum paging channel power which is decided through a paging channel. SOLUTION: The mobile station 10 generates a pilot signal measuring message(PSMM) identifying a strength, that is the power of a received pilot signal by locking in the strongest pilot signal. When the mobile station 10 is locked in the pilot signal from a base station 30, for example, PSMM is transmitted to the base station 30. The controller of the base station 30 decides optimum paging channel power and optimum initial traffic channel power, based on the reported pilot signal strength and a present forward link load in accordance with a software program which is stored in a memory. Therefore, the power budget of a system is efficiently allocated.
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公开(公告)号：JP2000069533A
公开(公告)日：2000-03-03
申请号：JP22037099
申请日：1999-08-03
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CHENG TERRY SI-FONG , CHIN YAO HAN
Abstract: PROBLEM TO BE SOLVED: To provide a system by which the number of times of hand-off by a mobile set is reduced. SOLUTION: This method consists of a step (601) where a pilot signal strength measurement message specifies a pilot signal of an active leg of the mobile station, a pilot signal strength of the pilot signal, a pilot signal object, the pilot signal strength of the pilot signal object and the combined pilot signal strength of the pilot signal of the active leg of the mobile station is decided, a step 603 where the decided combined pilot signal strength is compared with a 1st threshold level (T-quality), and a step where a corrected pilot signal strength measurement message not including the pilot signal object is served when it is decided that the combined pilot signal strength is higher than the 1st threshold level.
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公开(公告)号：JPH11298423A
公开(公告)日：1999-10-29
申请号：JP712299
申请日：1999-01-14
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CHENG TERRY SI-FONG , GANDHI ASIF DAWOODI
Abstract: PROBLEM TO BE SOLVED: To obtain an accurate index of link balance at a low cost without the need for time-consuming re-configuration of the system. SOLUTION: In this measurement method, a test setup 30 that simulates many system configurations measures link performance of a CDMA(code division multiple access) personal communication system, a cellular system or other type of radio system. The measurement device includes a 1st attenuator that is placed in a common part of a reception line and a transmission line of a mobile station 32 that is moved in any system and a 2nd attenuator that is placed to either of a reception dedicated part of the reception line and a transmission dedicated part of the transmission line. The attenuation given by the 1st and 2nd attenuators is separated so as to introduce a different attenuation to the transmission line and the reception line, and the performance of a forward link and a reverse link of the system is measured while changing at least one attenuation of the 1st and 2nd attenuates, Since the configuration can separate the attenuation in the reverse link, the link balance state is efficiently and accurately decided.
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公开(公告)号：BR0005928A
公开(公告)日：2001-07-24
申请号：BR0005928
申请日：2000-12-19
Applicant: LUCENT TECHNOLOGIES INC
Inventor： BORST SIMON C , CHENG TERRY SI-FONG , GRANDHI SUDHEER A , LUBACHEVSKY BORIS D , WHITING PHILIP ALFRED
Abstract: Disclosed is a method for improving call quality and capacity by integrating a dynamic channel allocation technique into an intelligent antenna system. The intelligent antenna systems includes beams which are grouped into sets, wherein each set has associated a long list and a primary short list, and each beam has associated a secondary short list. In one embodiment, long term interference levels are measured on each beam in a set of beams for a plurality of communication channels to produce the long list; short term interference levels are measured on each beam in the set of beams for a portion of the plurality of communication channels to produce a plurality of secondary short lists and the primary short list; and communication channels are assigned to a mobile-station from the portion of the plurality of communication channels based on the measured short term interference levels on each beam in the set of beams. The long list and the primary short list are based upon highest measured long and short term interference levels, respectively, for each of the plurality of communication channels across each beam in the set of beams.
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公开(公告)号：AU7247200A
公开(公告)日：2001-07-05
申请号：AU7247200
申请日：2000-12-21
Applicant: LUCENT TECHNOLOGIES INC
Inventor： BORST SIMON C , CHENG TERRY SI-FONG , GRANDHI SUDHEER A , LUBACHEVSKY BORIS D , WHITING PHILIP ALFRED
Abstract: Disclosed is a method for improving call quality and capacity by integrating a dynamic channel allocation technique into an intelligent antenna system. The intelligent antenna systems includes beams which are grouped into sets, wherein each set has associated a long list and a primary short list, and each beam has associated a secondary short list. In one embodiment, long term interference levels are measured on each beam in a set of beams for a plurality of communication channels to produce the long list; short term interference levels are measured on each beam in the set of beams for a portion of the plurality of communication channels to produce a plurality of secondary short lists and the primary short list; and communication channels are assigned to a mobile-station from the portion of the plurality of communication channels based on the measured short term interference levels on each beam in the set of beams. The long list and the primary short list are based upon highest measured long and short term interference levels, respectively, for each of the plurality of communication channels across each beam in the set of beams.
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