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44results about How to "Reduce handover failures" patented technology
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Method for handover problem identification
InactiveUS20120088507A1Approach failsReduce handover failuresWireless communicationProblem identificationRadio Base Station
Method for handover problem identification in a mobile telecommunications system, the system including at least a first radio basestation, a second radio basestation and a mobile terminal able to communicate with said basestations, said mobile terminal is adapted to do a handover from the first basestation to the second basestation, the method including the steps of:take at least one measure of a link quality between the terminal and any of the stations,evaluate any measure of a link quality in regard of handover problem identification,The invention is distinguished by:in the step of taking the at least one measure, take said at least one measure of a link quality at an end of a successful handover execution of the mobile terminal from the first basestation to the second basestation. The invention also comprises a mobile terminal, a radio basestation and a management entity.
Owner:HUAWEI TECH CO LTD
Handover method in mobile communication system
ActiveUS20180338271A1Eliminate handover interruption timeImprove service qualityRadio transmissionWireless communicationMobile communication systemsHandover
An operation method of a terminal, for a handover in a mobile communication system, may comprise performing measurement on beams of a target base station, and transmitting a measurement result of at least one beam of the target base station to a source base station; receiving, from the source base station, a handover command message including information on at least one RACH resource for the at least one beam; transmitting a handover indication message including information on at least one random access target beam having an order of channel conditions determined based on a latest measurement to the source base station and to the target base station through the source base station; and determining an optimal beam among the at least one random access target beam, and transmitting a RACH to the target base station through a RACH resource allocated to the optimal beam.
Owner:ELECTRONICS & TELECOMM RES INST
Report nsa/sa nr indicator
ActiveUS20190357095A1Function increaseImprove mobilityWireless communicationOperation modeComputer science
A wireless device configured to acquire network support information associated with a neighbor cell, wherein the network support information indicates that the neighbor cell supports a Stand-Alone (SA) mode of operation and / or a Non-Stand-Alone (NSA) mode of operation; and transmit to a serving network node a report comprising identification information associated with the neighbour cell and the network support information indicating that the neighbor cell supports a SA mode of operation and / or a NSA mode of operation. A serving network node configured to receive a report transmitted by a wireless device, wherein the report comprises identification information associated with the neighbor cell and network support information indicating that the neighbor cell supports a Stand-Alone (SA) mode of operation and / or a Non-Stand-Alone (NSA) mode of operation; and determine, based on the report, a type of interface to establish between the serving network node and the neighbor network node.
Owner:TELEFON AB LM ERICSSON (PUBL)
Method, device and system for reporting and configuring adjacent frequency points
ActiveCN103858482AAccurate configurationReduce handover failuresWireless communicationComputer scienceMeasurement frequency
The embodiment of the present invention provides a method, device and system for reporting and configuring adjacent frequency points, and relates to the field of network technique. The method comprising: after receiving base-station-sent measurement request containing measurement frequency points and PCI, obtaining physical frequency by calculating measurement frequency points; obtaining an adjacent region with the physical frequency and PCI around a cell; obtaining CGI information and actual frequency points of the adjacent region; and sending reporting information containing CGI information and the actual frequency points to the base station to match the CGI information with the actual frequency points by the base station. By reporting the actual frequency points to match the CGI information with the actual frequency points by the base station, the method, device and system for reporting and configuring adjacent frequency points resolves the problem of switch failure or call dropping caused by configuration fault when the prior art configures adjacent region information to a service cell. So that adjacent region information configuration may be carried out correctly, and the probable of switch failure or call dropping is reduced.
Owner:HUAWEI TECH CO LTD
Handover failure detection device, handover parameter adjustment device, and handover optimization system
InactiveUS20150195762A1Improvement of handover failure detectionReduce handover failuresConnection managementComputer terminalHandover
A handover failure detection device (121) detects at least one of handover failure types regarding outgoing handover from a first cell (131) managed by a first base station (111) by observing: (a) presence / absence of reception by the first base station (111) of a handover completion notification regarding first handover of a mobile terminal (101) from the first cell (131) to a second cell (132) managed by a second base station (112); and (b) presence / absence of a request for connection re-establishment from the mobile terminal (101) to the first cell (131), the request occurring after initiation of the first handover. As a result, it contributes to improvement of handover failure detection or reduction of handover failure in a situation where exchange of information between at least some of base stations has been limited.
Owner:NEC CORP
Handover Parameter Control Apparatus and Method, and Computer Program
InactiveUS20120176892A1Easy parameter controlImprove stabilityError preventionTransmission systemsPower differenceParameter control
A handover parameter control apparatus in each cell of a cellular system having a condition in which if power received by a mobile terminal from a neighbor base station and power received from an access base station, to which the mobile terminal is connected, have power difference greater than or equal to a threshold, the mobile terminal executes handover from an access cell belonging to the access base station to a neighbor cell belonging to the neighbor base station. The apparatus includes a threshold control weight computation unit that computes a threshold control weight which indicates a threshold control direction so as to reduce handover failures, by using a frequency of first-type handover failure events which reduces by increasing the threshold; and a frequency of second-type handover failure events which reduces by decreasing the threshold; and a threshold determination unit that determines the threshold based on the threshold control weight.
Owner:KDDI CORP
Method and device for supporting group handover
ActiveUS20140286314A1Signaling procedure is reducedReduces the likelihood of network congestionWireless commuication servicesNetwork data managementHandoverNetwork congestion
The method and the device for supporting group handover are disclosed. The method supporting group handover is provided, which is applied to UE in communication with network via a RN, including: a base station S-DeNB switching RN to a base station T-DeNB; and said S-DeNB switching UE served by said RN to said T-DeNB; wherein the MME serving said RN and the MME serving UE served by said RN are the same. Another embodiment of the present invention further provides a base station supporting group handover, The technical scheme set forth in the present invention can reduce unnecessary signaling procedure, the possibility of network congestion, and can reduce the signaling procedure of handover when group handover occurs, so as to reduce the failure of the handover process and ensure the continuity of service.
Owner:SAMSUNG ELECTRONICS CO LTD
Method, device and system for adjusting coverage area of base station
ActiveCN102892124AImprove communication qualityNormal voiceNetwork planningSignal qualityCommunication quality
The invention provides a method, a device and a system for adjusting the coverage area of a base station. The method for adjusting the coverage area of the base station comprises the following steps of: acquiring a throughput rate of a sector; if the throughput rate of the sector is more than or equal to a heavy load threshold, acquiring a step value for adjusting downtilt or a transmitting power of an antenna of the sector according to signal quality data which is reported to the sector when a terminal switches the base state or according to a pre-stored reference data table; sending a first adjustment command which carries the step value to the base station to which the sector belongs, so that the base station can adjust the downtilt or the transmitting power of the antenna of the sector according to the step value after receiving the first adjustment command, and the coverage area of the base station is adjusted. By the method, the device and the system, the size of a coverage overlapping area of the base station and an adjacent base station is guaranteed, so that terminals which are positioned in the coverage overlapping area can enjoy normal voice service and data service, the phenomenon of unsuccessful switching or ping-pong switching is avoided, and the communication quality of the terminals in the coverage overlapping area is improved.
Owner:CHINA UNITED NETWORK COMM GRP CO LTD
Handover failure detection device, handover parameter adjustment device, and handover optimization system
ActiveUS20150373772A1Reduce handover failureImprove failureConnection managementFailure typeHandover
A handover failure detection device (121) detects at least one of handover failure types regarding outgoing handover from a first cell (131) managed by a first base station (111) by observing: (a) presence / absence of reception by the first base station (111) of an acknowledgment response to a handover command regarding first handover of a mobile terminal (101) from the first cell (131) to a second cell (132) managed by a second base station (112); and (b) presence / absence of a request for connection re-establishment from the mobile terminal (101) to the first cell (131), the request occurring after initiation of the first handover. As a result, it contributes to improvement of handover failure detection or reduction of handover failure in a situation where exchange of information between base stations is restricted.
Owner:NEC CORP
Wireless terminal and handover method of wireless terminal
InactiveUS20100067488A1Reduce failureImprovement has not been caseWireless commuication servicesHandoff controlReal-time computing
A wireless terminal includes a data transmitting / receiving function and a handover control section. The handover control section scans channels to detect the existence or non-existence of the handover destination candidate on all available wireless channels. The handover control section acquires the handover destination candidate, by scanning the existence or non-existence of the handover destination in advance before handover execution. The verification scan is carried out to check whether or not the candidate is in a communicable area with the terminal. Then, based on the execution result of the verification scan, it performs a handover.
Owner:NEC CORP
Method and device for supporting group handover
ActiveUS20140308961A1Signal procedure be reduceReduce handover failureActive radio relay systemsNetwork data managementNetwork congestionHandover
A method supporting group handover, which is applied to a User Equipment (UE) in communication with a network via a Relay Node (RN), is provided. The method includes a base station (e.g., an S-DeNB) hands over an RN to a base station (e.g., a T-DeNB) and the S-DeNB hands over the UE served by the RN to the T-DeNB, wherein the handovers are performed simultaneously or separately. The various embodiments of the present disclosure provide a base station supporting group handover. The technical scheme set forth in the present disclosure can reduce an unnecessary signaling procedure, the possibility of network congestion, and can reduce the signaling procedure of handover when group handover occurs, so as to reduce the failure of the handover process and enhance the continuity of service.
Owner:SAMSUNG ELECTRONICS CO LTD
Input interface switching method and input interface switching device
ActiveCN102902471AReduce operating restrictionsIncrease success rateInput/output processes for data processingTouchscreen
Owner:CHINA MOBILE COMM GRP CO LTD
Report NSA/SA NR indicator
ActiveUS10911993B2Function increaseImprove mobilityWireless communicationEngineeringService networks
A wireless device configured to acquire network support information associated with a neighbor cell, wherein the network support information indicates that the neighbor cell supports a Stand-Alone (SA) mode of operation and / or a Non-Stand-Alone (NSA) mode of operation; and transmit to a serving network node a report comprising identification information associated with the neighbour cell and the network support information indicating that the neighbor cell supports a SA mode of operation and / or a NSA mode of operation. A serving network node configured to receive a report transmitted by a wireless device, wherein the report comprises identification information associated with the neighbor cell and network support information indicating that the neighbor cell supports a Stand-Alone (SA) mode of operation and / or a Non-Stand-Alone (NSA) mode of operation; and determine, based on the report, a type of interface to establish between the serving network node and the neighbor network node.
Owner:TELEFON AB LM ERICSSON (PUBL)
Circuit, method and related device for preventing channel disturbance
ActiveCN104469818AReduce handover failuresReduce mutual interferenceAssess restrictionNetwork topologiesElectrical and Electronics engineeringLocal area network
The invention discloses a circuit, a method and a related device for preventing channel disturbance. The circuit comprises a wireless fidelity (WiFi) chip, and at least a first single pole multithrow switch, wherein the moving end of the first single pole multithrow switch is connected with a signal transmitting tube pin of the WiFi chip, the firs single pole multithrow switch comprises at least two immovable ends, a first immovable end of the two is connected with a first signal transmitting branch, a second immovable end of the two is connected with a second signal transmitting branch, the second signal transmitting branch comprises a power attenuator, the input end of the power attenuator is connected with the second immovable end of the first single pole multithrow switch, after the WiFi chip confirms that a first channel and a second channel mutually interfere, the WiFi chip controls the moving end of the first single pole multithrow switch to be connected with the second immovable end of the first single pole multithrow switch, wherein the first channel is a wireless local area network channel, and the second channel is different from the wireless local area network channel.
Owner:HUAWEI DEVICE CO LTD
Network switching method, device and system and switching determination method and device
ActiveCN110167082ASolve the problem of switching failureReduce handover failuresAssess restrictionNetwork switchMobility management
The invention provides a network switching method, device and system and a switching determination method and devicenetwork switching method, a network switching device, a network switching system, anetwork switching determination method and a network switching determination device. The network switching method comprises the following steps: switching a network; a mobility management function located in a core network of a first network receives a first switching request sent by a source base station connected with the core network of the first network, wherein the first switching request isused for requesting user equipment (UE) connected with the source base station to switch from the source base station to a target base station, and the target base station is connected with a core network of the first network and / or a core network of a second network; according to the first switching request, the mobility management function determines a core network of a target network accessed by the UE through the target base station after switching, and the core network of the target network is the core network of the first network or the core network of the second network; and the mobility management function initiates switching of the UE between the source base station and the target base station according to the core network of the target network.
Owner:ZTE CORP
Method, device and system for frequency offset compensation
ActiveCN103580732ACorrect frequency offsetReduce handover failuresCarrier regulationRadio transmissionHandoverUser equipment
Provided are a frequency deviation compensation method, device and system, which relate to the field of communications and can estimate correct frequency deviation and reduce the occurrence probability of handover failure or service interruption. The frequency deviation compensation method comprises: a user equipment (UE) acquiring a location relationship between the UE and a target cell, the location relationship between the UE and the target cell comprising: the UE approximates to or moves away from the target cell; and the UE positively or negatively adjusting a frequency deviation compensation window according to the location relationship between the UE and the target cell. The frequency deviation compensation method, device and system provided in the embodiments of the present invention are used for compensating frequency deviation.
Owner:HUAWEI TECH CO LTD
Method used for discovering and selecting access network for user equipment in heterogeneous network
ActiveCN103945498AImprove experienceReduce switchingAssess restrictionAccess networkRadio access network
The invention provides a method used for discovering and selecting an access network for user equipment in a heterogeneous network. In the method, the user equipment sends a request message to an ANDSF, the request information at least including an identifier of a cellular network cell that user equipment lately passes and staying time in the cellular network cell that the user equipment passes lately. The ANDSF determines the movement speed type of the user equipment at least according to the identifier of the cellular network cell that the user equipment lately passes and the staying time in the cellular network cell that the user equipment lately passes; and sets an intersystem mobile strategy, access network discovery information and intersystem routing strategy for the user equipment at least according to the movement speed type. Thus reliable estimation of the movement speed of the user equipment is realized in a heterogeneous network including various types of access networks, and the ANDSF can accurately set the intersystem mobile strategy, the access network discovery information and the intersystem routing strategy for the user equipment based on the reliable movement speed, thereby reducing frequent inter-RAT switching and switching failures, and providing better user experience.
Owner:ALCATEL LUCENT SHANGHAI BELL CO LTD
Network switching control method and base station
ActiveCN103491586AReduce switching timesReduce signaling interactionWireless communicationTerminal equipmentNetwork switch
The invention provides a network switching control method and a base station. The method comprises the steps that the base station controls first terminal equipment to fall back to a 2G or 3G network from an LTE network to carry out first circuit domain CS, the base station determines the fact that the first terminal equipment completes the first CS and then determines whether second CS to be established corresponding to the first terminal equipment exists or not, the base station controls the first terminal equipment to stay in the 2G or 3G network to wait for the second CS if the second CS exists, and the base station controls the first terminal equipment to switch back to the LTE network if the second CS does not exist. The network switching control method and the base station can reduce the number of switching times of the terminal between the 2G / 3G network and the LTE network, and thus reduce the burden of the network side.
Owner:CHINA UNITED NETWORK COMM GRP CO LTD
Methods, Computer Program Products and Apparatuses Enabling to Improve Handovers in Mobile Communication Networks
ActiveUS20150181494A1Enhance user HO success rateReduce unnecessary HOsWireless commuication servicesComputer terminalHandover
A memory includes a number of partitions, each assigned to a respective terminal, each including a first number of subpartitions of a first type, each assigned to a respective cell visited by the respective terminal. The memory includes second number of subpartitions of a second type, each assigned to a respective transition of a terminal between respective cells Upon each transition of a respective terminal between respective cells, data is received pertaining to the respective terminal from a network entity(les) representing a respective cell. Responsive thereto, in each subpartition of the first type, statistical information is stored that pertains to the terminal in relation to that cell In each subpartition of the second type, information is stored that pertains to the respective transition of the terminal. It Apparatuses as well as respective related methods, and computer program products are disclosed.
Owner:NOKIA SOLUTIONS & NETWORKS OY
Handover failure detection device, handover parameter adjustment device, and handover optimization system
ActiveUS9992812B2Improve failureReduce handover failuresConnection managementHandoverExchange of information
Owner:NEC CORP
Method and equipment for adjusting priority of resources
ActiveCN102223724AReduce the probability of strong interferenceReduce handover failuresWireless communicationHandoverPower measure
The embodiment of the invention relates to the technical field of wireless communication, in particular to a method and equipment for adjusting the priority of resources, aiming at solving the problems of handover failure and call drop caused by strong same-frequency and same time slot interference possibly in the switching process because strong interference easily exists in uplink resources of a standby target in the scheme of determining resource priority in the prior art. The method in the embodiment of the invention comprises the following steps of: determining a first interference power value of each same-frequency neighbor cell to each time slot of the cell; and adjusting the time slot priority determined by SDCA (Synchronization Data Communication adapter)-based power measurement according to the determined first interference power value. The strong interference is considered in the adjustment of the resource priority, so that the possibility that the strong interference exists in the uplink resources of the standby target is reduced, further the frequencies of handover failure and call drop due to same-frequency and same time slot interference are reduced and the handover performance is improved.
Owner:DATANG MOBILE COMM EQUIP CO LTD
Method and device for supporting group handover
ActiveUS9516561B2Reduction procedureReduce the possibilityNetwork data managementSupport groupHandover
A method supporting group handover, which is applied to a User Equipment (UE) in communication with a network via a Relay Node (RN), is provided. The method includes a base station (e.g., an S-DeNB) hands over an RN to a base station (e.g., a T-DeNB) and the S-DeNB hands over the UE served by the RN to the T-DeNB, wherein the handovers are performed simultaneously or separately. The various embodiments of the present disclosure provide a base station supporting group handover. The technical scheme set forth in the present disclosure can reduce an unnecessary signaling procedure, the possibility of network congestion, and can reduce the signaling procedure of handover when group handover occurs, so as to reduce the failure of the handover process and enhance the continuity of service.
Owner:SAMSUNG ELECTRONICS CO LTD
Handover method in mobile communication system
ActiveUS11039357B2Shorten the timeReduce handover failuresSpatial transmit diversityWireless communicationEngineeringMobile communication systems
An operation method of a terminal, for a handover in a mobile communication system, may comprise performing measurement on beams of a target base station, and transmitting a measurement result of at least one beam of the target base station to a source base station; receiving, from the source base station, a handover command message including information on at least one RACH resource for the at least one beam; transmitting a handover indication message including information on at least one random access target beam having an order of channel conditions determined based on a latest measurement to the source base station and to the target base station through the source base station; and determining an optimal beam among the at least one random access target beam, and transmitting a RACH to the target base station through a RACH resource allocated to the optimal beam.
Owner:ELECTRONICS & TELECOMM RES INST
Communication system
ActiveUS9763146B2Additional componentReduce handover failuresNetwork topologiesRadio transmissionMobile relayCommunications system
A system is disclosed in which a base station initiates a handover of a mobile relay node associated with the base station. The base station obtains information that identifies at least one further base station, and that indicates that the at least one further base station is capable of providing donor services to the mobile relay node. When the base station determines that the mobile relay node requires handover, it selects, from at least one cell of the at least one further base station identified by the obtained information, a target cell for handover of the mobile relay node, and performs handover of the mobile relay node to the selected target cell.
Owner:NEC CORP
A Mobile Load Balancing Method Based on Hierarchy Analysis in LTE System
ActiveCN104581829BMake full use of resourcesReduce switchingNetwork traffic/resource managementHigh level techniquesTransfer cellComputer network
The present invention claims a mobile load balancing method based on hierarchical analysis for LTE system, which mainly includes two aspects: the selection of the optimal load transfer cell and the determination of the optimal cell independent offset (CIO) parameter. The present invention is made up of four modules: (1) community state detection module, mainly responsible for judging the load state of the community, if overloaded, then initiates load balancing; (2) user-cell matching pair generation module, mainly through hierarchical analysis (AHP) Algorithm to select the optimal transfer cell for the user; (3) load distribution module, mainly to pre-allocate the load of the overloaded part of the overloaded cell to each target cell before adjusting the parameter CIO. (4) Balance module, which mainly adjusts the independent bias CIO of the cell through a variable step size. When the target cell receives the allocated load, the best independent bias CIO of the cell is obtained.
Owner:CHONGQING UNIV OF POSTS & TELECOMM
Method and device for improving switching success rate
InactiveCN110493834AImprove experienceEliminate switching timeWireless communicationTerminal equipmentHandover
The invention discloses a method and a device for improving a switching success rate, which are used for solving the technical problem of relatively low switching success rate in a cell switching process in the prior art. The method comprises the steps of receiving handover measurement report information, the handover measurement report information at least comprising at least one of reference signal reception power and reference signal reception quality of at least one cell adjacent to a serving cell corresponding to a terminal device; determining a first to-be-switched neighbor cell from atleast one cell adjacent to the serving cell according to a preset selection mode; determining resource available information of the first to-be-switched neighbor cell, and determining whether the resource of the first to-be-switched neighbor cell is available for switching according to the resource available information, the resource available information comprising predetermined indication information about whether the resource of the first to-be-switched neighbor cell is available; and if the resources of the first to-be-switched neighbor cell can be switched, initiating switching to the first to-be-switched neighbor cell so as to switch from the serving cell to the first to-be-switched neighbor cell.
Owner:COMBA TELECOM SYST CHINA LTD
Method and equipment for adjusting priority of resources
ActiveCN102223724BReduce the probability of strong interferenceReduce handover failuresWireless communicationHandoverPower measure
The embodiment of the invention relates to the technical field of wireless communication, in particular to a method and equipment for adjusting the priority of resources, aiming at solving the problems of handover failure and call drop caused by strong same-frequency and same time slot interference possibly in the switching process because strong interference easily exists in uplink resources of a standby target in the scheme of determining resource priority in the prior art. The method in the embodiment of the invention comprises the following steps of: determining a first interference power value of each same-frequency neighbor cell to each time slot of the cell; and adjusting the time slot priority determined by SDCA (Synchronization Data Communication adapter)-based power measurement according to the determined first interference power value. The strong interference is considered in the adjustment of the resource priority, so that the possibility that the strong interference exists in the uplink resources of the standby target is reduced, further the frequencies of handover failure and call drop due to same-frequency and same time slot interference are reduced and the handover performance is improved.
Owner:DATANG MOBILE COMM EQUIP CO LTD
Wide-band CDMA up stream scrambling-code distribution method
InactiveCN100544241CReduce the probability of being assigned the same uplink scrambling codeReduce uplink scrambling code conflictsCode division multiplexTransmissionComputer hardwareDistribution method
The method includes following steps: for user equipment (UE) of local radio network controller (RNC), generating random up going scrambling code, and determining whether it is repeated between generated scrambling code and scrambling code recorded at local RNC; if yes, then regenerating random scrambling code; if no, distributing and recording the generated scrambling code; for UE of non local RNC, determining whether up going scrambling code of UE is repeated from recorded a up going scrambling code of local RUC; if yes, then switching is failure, and flow is ended; if no, then switching is allowed, and up going scrambling code from the switching is recorded. The disclosed method reduces switching failure caused by conflict of up going scrambling codes, and prevents possibility of repetition between new assigning up going scrambling code and already assigned up going scrambling code.
Owner:HUAWEI TECH CO LTD
Network switching method, device and system, switching determination method and device
ActiveCN110167082BSolve the problem of switching failureReduce handover failuresAssess restrictionEngineeringNetwork switch
Owner:ZTE CORP
Neighboring cell frequency reporting and configuration method, device and system
ActiveCN103858482BAccurate configurationReduce handover failuresWireless communicationHandoverMeasurement frequency
Embodiments of the present invention provide a method, device, and system for reporting and configuring adjacent cell frequencies, which relate to the field of network technology. The method includes: after receiving a measurement request sent by a base station that includes a measurement frequency point and PCI, according to Calculate the physical frequency by measuring the frequency point; obtain the adjacent cell with physical frequency and PCI around the serving cell; obtain the CGI information and the actual frequency point of the adjacent cell; send the report information containing the CGI information and the actual frequency point to the base station, so that The base station configures the CGI information under the actual frequency point. The present invention reports the actual frequency point so that the base station can configure the CGI information to the actual frequency point, and solves the problem in the prior art that may be misconfigured when configuring neighboring cell information for the serving cell, thereby easily causing handover failure or call drop ; It achieves the effect that the adjacent cell information can be correctly configured, thereby reducing the probability of handover failure or call drop.
Owner:HUAWEI TECH CO LTD
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