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公开(公告)号：JPH11331931A
公开(公告)日：1999-11-30
申请号：JP7467199
申请日：1999-03-19
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GRANDHI SUDHEER A , HUANG JOE , KAHN COLIN L , KUMARAN KRISHNAN , ZHANG BULIN B
Abstract: PROBLEM TO BE SOLVED: To preferentially maintain a mobile object on a cell to support the specific service of a specific private system, etc., by returning the configuration information on an existing cell having signal intensity higher than the designated threshold to a new cell that is added in a cellular system. SOLUTION: A new cell measures the signal intensity on a down-channel to produce a candidate channel list and maintains only the channels having signal intensity higher than the designated threshold in sequence and according to the signal intensity. Then the new cell sends a request to a center data base of a mobile object switching center, starts transmitting with the test frequency that is not used by other cells and asks an adjacent cell to measure the test frequency to identify the neighbors of the measurement value larger than its threshold. Then a configuration information message concerning every neighbor is sent to the new cell. Thus, the new cell can operate. Thereafter, a neighbor list is periodically reconfigured based on the down-link measurement value obtained at a cell site and the measurement value received from a mobile object.
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公开(公告)号：JPH11313365A
公开(公告)日：1999-11-09
申请号：JP5634999
申请日：1999-03-04
Applicant: LUCENT TECHNOLOGIES INC
Inventor： BORST SIMON C , GRANDHI SUDHEER A , HUANG JOE , KAHN COLIN L , KUMARAN KRISHNAN , ZHANG BULIN B
Abstract: PROBLEM TO BE SOLVED: To improve the dynamic assignment of channels by using a cost table that assigns a prescribed channel to a 1st sector or cell and using each entry of a busy channel table that denotes whether or not a prescribed sector or cell is in use at present so as to produce a cost required for using a channel again. SOLUTION: A function CFBDCA is operated in combination with a function MBDCA and corrects incomplete and inaccurate signal measurement information of the function MBDCA mainly. The algorithm of the function CFEDCA is loaded even when an object selected by the function MBDCA is in existence or not. The algorithm of the function CFBDCA uses a database so as to avoid too many cells/sectors adjacent to the cell/sector where the object channel is surely in use and the function CFBDCA aids correction of missing of measurement of downlink interference in a mobile location.
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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：JP2001119340A
公开(公告)日：2001-04-27
申请号：JP2000251781
申请日：2000-08-23
Applicant: LUCENT TECHNOLOGIES INC
Inventor： TERRY SHIIFON CHEN , GRANDHI SUDHEER A
Abstract: PROBLEM TO BE SOLVED: To balance sound quality with system capacity in a CDMA radio communication system. SOLUTION: A method and a device are implemented by a computer scheduling a broadcast short message service(BSMS) message by a method for reducing adverse influence on sound quality and system capacity, which is caused by the transmission of the SMS message, in a radio system. In the method and the device, service quality adjustment (QoS) is used based on a broadcast message scheduler for adjusting and scheduling the transmission time of the BMS message for individual users in the system. The user can balance sound quality with broadcast capacity by QoS based on the broadcast short message scheduler.
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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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Patent Agency Ranking
公开(公告)号：JPH11331929A
公开(公告)日：1999-11-30
申请号：JP5634899
申请日：1999-03-04
Applicant: LUCENT TECHNOLOGIES INC
Inventor： BORST SIMON C , GRANDHI SUDHEER A , HUANG JOE , KAHN COLIN L , KUMARAN KRISHNAN , ZHANG BULIN B
Abstract: PROBLEM TO BE SOLVED: To perform effective channel allocation by applying a reuse distance reference algorithm to a candidate channel list generated by a measurement based dynamic channel allocation MBDCA algorithm against a new call and selecting a channel corresponding to the new call. SOLUTION: A flexible channel allocation scheme is a hybrid algorithm and selects an optimum channel to be allocated to a cellular call based on a dynamic channel allocation MBDCA algorithm of a measurement base using an interference signal measurement value obtained in base stations 201 and 202, and on a reuse distance reference algorithm using information stored in a data base contained in a mobile object switching center MSC which performs switching between the mobile objects 203 and 204. In an MBDCA scheme, a channel is allocated to a call when the channel satisfies a prescribed call quality standard. The MBDCA scheme is applicable to both traffic and interference and more excellent in terms of the system capacity than a dynamic channel allocation scheme that is based only on a reuse distance reference.
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公开(公告)号：DE60034282T2
公开(公告)日：2007-12-27
申请号：DE60034282
申请日：2000-08-14
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CHENG TERRY , GRANDHI SUDHEER A
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公开(公告)号：AU746112B2
公开(公告)日：2002-04-18
申请号：AU2121599
申请日：1999-03-16
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GRANDHI SUDHEER A , HUANG JOE , KAHN COLIN LEON , KUMARAN KRISHNAN , ZHANG BULIN B
Abstract: In a cellular system, a new cell measures signal strengths of different channels being used by existing cells. The new cell generates a list of candidate channels corresponding to the channels with the greatest signal strength and transmits the list to the mobile switching center (MSC) of the cellular system. The MSC determines which of the candidate channels correspond to beacons in existing cells and transmits configuration information to the new cell for those corresponding existing cells. In this way, the new cell automatically receives configuration information on its neighbor cells. If the MSC determines that the number of candidate channels that are beacons is too small, the MSC will ask the new cell to transmit additional candidate channels (i.e., those having even lower signal strength).
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公开(公告)号：CA2327071A1
公开(公告)日：2001-06-28
申请号：CA2327071
申请日：2000-11-29
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CHENG TERRY SI-FONG , LUBACHEVSKY BORIS DMITRIEVICH , GRANDHI SUDHEER A , BORST SIMON C , 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 lis t. In one embodiment, long term interference levels are measured on each beam in a set of beams fo r 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 communicatio n 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 i n the set of beams. The long list and the primary short list are based upon highest measured lon g and short term interference levels, respectively, for each of the plurality of communicatio n channels across each beam in the set of beams.
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公开(公告)号：BR9900986A
公开(公告)日：1999-12-28
申请号：BR9900986
申请日：1999-03-10
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GRANDHI SUDHEER A , HUANG JOPE , KAHN COLIN LEON , KUMARAN KRISHNAN , ZHANG BULIN B
Abstract: In a cellular system, a new cell measures signal strengths of different channels being used by existing cells. The new cell generates a list of candidate channels corresponding to the channels with the greatest signal strength and transmits the list to the mobile switching center (MSC) of the cellular system. The MSC determines which of the candidate channels correspond to beacons in existing cells and transmits configuration information to the new cell for those corresponding existing cells. In this way, the new cell automatically receives configuration information on its neighbor cells. If the MSC determines that the number of candidate channels that are beacons is too small, the MSC will ask the new cell to transmit additional candidate channels (i.e., those having even lower signal strength).
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