85results about How to "Reduce handover failure rate" patented technology

Disclosed are management method, device and equipment for mobile switching. When applied to a source auxiliary base station, the management method comprises the steps of sending a switching request message to the target base station when it is determined to switch set user equipment to a target base station which is different from the source auxiliary base station; using signaling radio bearer (SCG SRB) on the source auxiliary base station side to issue a switching command message to the UE when the switching request confirmation message sent by the target base station is received, and triggering the UE to carry out random access attempt on serving cells under the target base station. In the embodiment of the invention, a secondary node (SN) can also partially participate in switching management of the UE, so that signaling expenditure and data interruption delay of the whole switching process are reduced, and the RRM processing load related to UE mobility management, such as a RRM measurement algorithm, a switching execution and the like, by master node (MN) is reduced.

The invention discloses method for strengthening X2 interface resource state signaling, mainly solving the problem that resource state signaling of X2 interface interaction cannot indicate residual resource state information of a district in an LTE-Advanced system. The invention adopts the following strengthening processes: firstly, a source base station sends a resource state request message to an adjacent base station through an X2 interface for requesting the adjacent base station to periodically report a residual PRB resource state, and the adjacent base station feeds back a response message according to measuring capability per se; secondly, the adjacent base station periodically reports the residual PRB resource state to the source base station; and thirdly, the source base station sends the resource state request message and sets register request information to be 'stopping', and the adjacent base station feeds back the response message and ends work of report and measurement after receiving the message. The invention can realize interaction of the residual resource information of the district with low complexity without increasing an additional X2 interface application layer protocol progress. The residual resource information is a quantitative value, is accurate and reliable, and can be used for a district selection process for switching among honeycomb districts by skipping a district.

The invention discloses a heterogeneous wireless network vertical switching method based on a depth deterministic strategy gradient. The invention relates to the technical field of communication, solves the problem that user terminals with different service types are frequently switched among different networks in a heterogeneous wireless network environment, and adopts the technical scheme that an analytic hierarchy process is adopted to calculate the weight of network state parameters for constructing a reward function; the strategy network makes a switching decision based on the current network state, then a reward is obtained, the evaluation network is updated according to the reward, and the strategy network is updated in the suggested direction of the evaluation network; the algorithm is not only based on the current network state, but also considers the potential future network state to ensure the QOS requirement of the user. The optimal access network can be selected for usersof different service types, the average switching frequency and the switching failure probability can be effectively reduced, meanwhile, the blocking rate of new calling users is reduced, and the resource utilization rate of the system is improved.

The invention relates to a combined switching method based on load balancing in low-orbit satellite communication, and belongs to the technical field of satellite communication switching. The method comprises the following steps: 1) judging whether an overload satellite exists or not to determine whether to trigger switching, and selecting a proper target satellite by a target satellite selectionmethod based on the signal strength of adjacent satellites received by a mobile user and multi-attribute decision of the load condition of the adjacent satellites; 2) judging whether the time when thereference signal receiving power and the reference signal receiving quality of the source satellite and the target satellite meet a switching triggering condition is greater than a time delay threshold or not to determine whether to trigger switching or not; and (3) if the step (1) and the step (2) meet the switching triggering condition, executing switching through the inter-satellite switchingsignaling process provided by the invention. The switching failure rate and the call drop rate are reduced, the probability of ping-pong switching is also reduced to a certain extent, and after switching is finished, a mobile user can obtain better service quality.

The invention discloses a method used for establishing double-connection in a communication system. The method is characterized in that a second base station is used to receive a switching request from a first base station connected with the user equipment; the second base station is used to respond to the switching request, and is used to establish the connection with the user equipment; the second base station can be used to determine a third base station according to the received measurement results, and the establishing of the connection between the third base station and the user equipment can be facilitated, and therefore the double-connection can be provided for the user equipment. The switching trigger condition of the switching request comprises the mobility enhancement or the establishing of the double-connection request. The invention also provides the corresponding base stations and the user equipment.

In a fifth generation (5G) mobile system, large-scale MIMO antennas and super-dense deployment networks are two modes for realizing high throughout. In allusion to a problem of frequent switching of super-dense networks, the invention provides a switching management method for hysteresis margin automatic adjustment according to movement conditions of terminal equipment based on an idea of super-dense network clustering. According to the invention, clustering management is carried out on small base stations, switching of user equipment between cells is divided into a pre-switching stage and a formal switching stage, and the switching threshold hysteresis margin is adjusted correspondingly according to the speed of the equipment, thereby completing a switching process of the equipment between the cells. The method provided by the invention can effectively reduce the switching time delay and the switching failure rate of the equipment.

The invention relates to a channel reservation switching control method based on service priority. The method comprises the following steps: a current cell acquires the position information of users regularly; when the users move to the border of the current cell, the current cell notifies a neighboring cell to be switched to; the neighboring cell sets different reserved channels for different users on the basis of service priority according to the occupation condition of channels of the neighboring cell; and when the reserved channels are not enough, urgent users occupy channels reserved for users with low priority in a complete occupation way, and the users with low priority enter a queuing line and wait for scheduling. By utilizing the method disclosed by the invention, the switching failure rate of the users can be reduced obviously, the switching performance of the urgent users can be guaranteed, and the requirements of urgent communication tasks can be met.

The embodiment of the invention provides an automatic switching method and system, a base station and a user device. According to one aspect, in the embodiment of the invention, the base station generates a measurement configuration message, wherein the measurement configuration message comprises at least one measurement configuration, at least one measurement object, at least one measurement reporting condition and an automatic switching identifier; then, the base station sends the measurement configuration message to the user device; and at last, the user device obtains the measurement configuration message, takes the measurement configuration targeted by the automatic switching identifier as an automatic switching measurement configuration, and when a measurement result of the measurement object corresponding to the automatic switching measurement configuration meets the measurement reporting condition corresponding to the automatic switching measurement configuration, switches to a target cell. Therefore, according to the technical scheme provided by the embodiment of the invention, the problem that the user device cannot perform automatic switching in the prior art is solved.

The present invention relates to a method for handover in a cellular wireless communication system, said method comprising the steps of: monitoring a downlink SINR value SINR DL between a source cell for a mobile station and said mobile station; selecting a target cell based on one or more measurement reports from said mobile station, wherein said measurement reports include measurements on reference signals transmitted from one or more candidate target cells; initiating a handover preparation to said selected target cell for said mobile station based on said downlink SINR value SINR DL ; and handing over said mobile station from said source cell to said selected target cell. Furthermore, the invention also relates to a method in a network control node, a network control node device, a computer program, and a computer program product thereof.

Provided is a call admission control method for use in a packet based communication system, which can secure a handoff and a quality of service (QoS) by discriminating a new call and a handoff call and borrowing a shared bandwidth, a reserved bandwidth, and a bandwidth of other service according to kinds of services and their characteristics. The call admission control method includes the steps of: a) dividing frequency band into a reservation band and a shared band for communication service handoff call and multicast service handoff call, and determining whether a call admission request of users is a new call or a handoff call; b) when the call admission request is the new call, determining whether to accept the call admission request by allocating the shared band and a band borrowed from other service; and c) when the call admission request is the handoff call, determining whether to accept the call admission request by allocating the shared band, the reserved band, and the borrowed band according to services and bandwidth resources.

The invention discloses a network selection method and device. The network selection method comprises the steps that UE determines network selection from a 3GPP network to a non-3GPP network; the UE determines the movement speed of the UE; when the movement speed of the UE is larger than a preset speed threshold value, the UE stops network selection from the 3GPP network to the non-3GPP network. By adopting network selection method and device, when the movement speed of the UE is larger than the preset speed threshold value, a high-speed UE is prevented from being accessed to the non-3GPP network with a small coverage range by stopping network selection from the 3GPP network to the non-3GPP network, then the network switching failure rate is reduced, and the purposes of improving the user experience and system overall performance can be achieved.

The present invention relates to a method for transmitting and receiving information in a cellular wireless communication system, said cellular wireless communication system comprising: a first network control node arranged for controlling at least one first cell of said cellular wireless communication system, a second network control node arranged for controlling at least one second cell of said cellular wireless communication system; said method comprising the steps of: transmitting, by said first network control node, a cell coverage indicator indicating a cell coverage for said first cell, receiving, by said second network control node, said cell coverage indicator, and using, by said second network control node, said cell coverage indicator for adjusting a cell coverage for said second cell and / or one or more radio resource management parameters associated with said second cell. Furthermore, the invention also relates to a method in a first network control node, a method in a second network control node, a first network control node device, a second network control node device, a computer program, and a computer program product thereof.

The invention relates to a vertical switching algorithm based on an interval type-2 fuzzy neural network, which belongs to the technical field of mobile communication and specifically comprises the following steps of: firstly, defining a historical access rate in a network pre-selection stage, and setting a threshold value in combination with the number of current candidate network sets; accordingto the received signal strength and the remaining available bandwidth, preliminarily selecting all networks in a user receiving range; and in a vertical switching determination stage, using the timedelays, the packet loss rates and the bit error rates of the remaining candidate networks as the inputs of the interval type-2 fuzzy neural network, completing fuzzy logic reasoning by using the structure of a feedforward neural network, and calculating an output decision value after training, so that the optimal access network is selected. Finally, an experimental result shows that the algorithmcan effectively reduce the error probability of the switching decision, reduce the switching failure and the switching frequency and improve the total throughput of the network while ensuring lower time complexity.

The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The present disclosure relates to a method for quickly and efficiently allocating uplink transmission resource to data of a terminal.

The invention discloses a method and a device for selecting a cell under a DRX (Discontinuous Reception) state in a HetNet system. An access network sets a HetNet level for each cell and the HetNet level is broadcasted to a user, and the user receives a message and stores the message in the terminal; each base station judges whether the activity of a data packet in a time period for the user in a connected state is lower than a certain threshold value, if yes, a DRX mechanism is used, and DRX modeling analysis is carried out; with a cost function value to be minimal as a principle, a DRX cycle length is allocated for each user; in consideration of the user speed and the DRX cycle length, a monotone function value is calculated, and a cell HetNet level value corresponding to a different value is judged; and finally, according to the obtained neighbor cell HetNet level information in need of measurement, the user measures a neighbor cell meeting requirements, and the best target cell is selected for switching. The method and the device of the invention have the advantages of reducing signaling interaction between a network side and the user terminal, reducing user power consumption, prolonging the service life of the terminal, and effectively reducing the handover failure rate, the wireless link failure rate and the ping-pong rate during the handover process.

A method for obtaining an uplink signal quality of a neighbor cell includes: a serving Evolved Node B obtaining a downlink transmission path loss of current user equipment in said neighbor cell according to a reference signal power of said neighbor cell and a measurement report result of said user equipment for said neighbor cell, taking said downlink transmission path loss as an uplink transmission path loss of said user equipment in said neighbor cell, and estimating the uplink signal quality of said user equipment in said neighbor cell according to said uplink transmission path loss. Correspondingly, the present invention further provides a method for optimizing handover and an evolved node B.

The invention provides a train-ground wireless communication system of a medium-high speed maglev train. The system comprises a vehicle-mounted radio system, and a partition radio control unit, a radio base station and a central radio control unit which are arranged in partitions along a track. The vehicle-mounted radio system is connected and communicated with the radio base station through 38G radio; the radio base station transmits received train signals to the partition radio control unit through an optical fiber network, the partition radio control unit transmits the received train signals to the partition safety computer, the traction control system and the central radio control unit, and train-ground information transmission is achieved. According to the system disclosed by the invention, the communication partitions and the operation control partitions are arranged in a staggered manner; the cross-partition handover of the train-ground communication and the cross-partition handover of the operation control system are executed separately, so that the operation control partition handover failure rate caused by communication connection failure is reduced, the times of tractioncut-off and emergency braking are reduced, and the line punctuality rate and the passenger comfort are improved.

The invention aims to provide a multi-mobile relay cooperative handover method and a device. A measurement report of the quality of a signal channel of a return link of a to-be-switched mobile relay which is sent by an auxiliary mobile relay is received by a source base station; a decision of handover for the to-be-switched mobile relay is made by the source base station according to the measurement report; the source base station acquires handover configuration information for the to-be-switched mobile relay from a target base station to which the mobile relay is switched; and the source base station sends the handover configuration information to the to-be-switched mobile relay through the auxiliary mobile relay, so that the to-be-switched mobile relay can perform RRC (radio resource control) reconfiguration and can be communicated with the target base station, wherein the signal channel quality of the return link corresponding to the auxiliary mobile relay is higher than that of the return link corresponding to the to-be-switched mobile relay. Compared with the prior art, the method and the device have the advantage that cooperative handover is realized through a plurality of mobile relays, so that the failure rate of the handover is reduced.

The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The present disclosure relates to a method for quickly and efficiently allocating uplink transmission resource to data of a terminal.

The embodiment of the invention provides a switching management method for a 5G ultra-dense network. The method comprises the steps: starting an inactive timer for a terminal which has no uplink and downlink data transmission and is in a connection state, and stopping timing when the uplink and downlink data transmission of the terminal is detected; determining whether the terminal has a switchingrequirement or not under the condition that the inactive timer is not overtime; in response to a switching demand of the terminal, judging whether the inactive timer stops timing or not; under the condition that the inactive timer does not stop timing, switching processing or state conversion processing is carried out on the terminal according to the data arrival probability of the terminal before timeout of the inactive timer, the switching cost of the terminal and the state conversion cost; and under the condition that the inactive timer stops timing, performing switching processing or state conversion processing on the terminal according to the switching cost and the state conversion cost of the terminal. According to the embodiment of the invention, unnecessary switching is avoided, and the switching frequency and interruption time delay in the 5G ultra-dense network are reduced.

The invention relates to the technical field of communication, in particular to a cell measuring method and device and a cell measuring result reporting method and device, which are used for reducing unnecessary procedures of cutting in and cutting out of a mini base station. The cell measuring method comprises the following steps that first equipment determines current information of user equipment, wherein the current information comprises kinematic velocity; the first equipment configures a measuring start parameter value of the user equipment according to the determined current information of the user equipment, so that the user equipment determines whether to carry out cell measurement or not according to the configured measuring start parameter value. The cell measuring result reporting method comprises the following step that the first equipment determines the current information of the user equipment, wherein the current information comprises the kinematic velocity; the first equipment configures a switching parameter value of the user equipment according to the determined current information of the user equipment, so that the user equipment determines whether to report a cell measuring result or not according to the configured switching parameter value.

The invention discloses a method for adjusting time to trigger (TTT). The method comprises the steps that when a mobile terminal (UE) switches, a target base station (TeNB) obtains the auxiliary switching information of the UE and determines the weight of switching this time according to the auxiliary switching information of the UE; the TeNB issues a switching command to the UE, wherein the switching weight is carried in the switching command; the UE performs switching counting according to the switching weight in the switching command to obtain updated switching frequency; the UE adjusts the TTT according to the updated switching frequency. The invention further discloses the base station and the UE for adjusting the TTT.

The invention aims to provide a method and a device used for collaborative switching of a plurality of mobile relays. According to the invention, when a source base station determines that one of the mobile relays is required to switch, the switch triggering time of at least one of the mobile relays determined to be switched currently, which is saved in the rear mobile relays, is determined by the source base station according to the distances among the mobile relays and the motion related information of an movable object, and the mobile relays are started up according to the sequence in the rear mobile relays and first timers corresponding to the rear mobile relays are actuated; and when all periods of the first timers come to an end, the switch configuring information in the rear mobile relays is obtained from target base stations corresponding to the mobile relays determined to be switched currently through the source base station and is used for corresponding RRC (Radio Resource Control) reconfiguration in rear mobile relays and realizing communication with the target base station. According to the invention, the amount and switch time delay of switching signaling are both reduced through collaborative switching of the plurality of mobile relays, so that switching failure is effectively avoided.

The invention discloses a method, a device and a system for maintaining the information in an adjacent region. In the scheme in the invention, eNB maintains the information stored in a GERAN (GSM EDGE radio access network) adjacent region according to the grouping switching capability information dynamically obtained in the GERAN adjacent region. The invention has the advantages that the eNB accurately obtains whether the GERAN region supports the grouping switching through the continuous self-learning of eNB according to the scheme provided by the invention so that the dynamic management of the information in the GERAN adjacent region is realized by the eNB; the interference degree of manpower on the list information of the adjacent region in the eNB can be reduced; the work load of network optimization personnel is reduced; and the accuracy of the list information in the adjacent region can be enhanced so as to reduce the failure rate of the switching and enhance the property of the system.

The present invention discloses a method of measurement report, and a device of measurement report, used for solving the existing problems that under a heterogeneous network scene, a UE in a high speed moving state may be switched to a small cell, so that the switching failure probability is increased, and the user experience and the overall performance of a system are influenced. The method of the embodiment of the present invention comprises the steps of using the UE to receive the indication information sent by a base station, wherein the indication information is used to indicate that the UE carries the information correlated with the own moving speed at measurement report; using the UE to evaluate the own moving speed; using the UE to report the measurement to the base station when a measurement report condition is satisfied, and carrying the own current speed information in a measurement report message, wherein the speed information is determined by the current evaluation result of the own moving speed. According to the embodiment of the present invention, the UE in the high speed moving state is prevented from being switched to the small cell.

The invention provides an authorization user parameter estimation method based on cooperation perception in a cognitive radio system and relates to the parameter estimation field in cognitive radio communication systems. Thus, cognitive users are capable of estimating authorization user parameters in a condition of low signal-to-noise ration in a cognitive radio system. Based on cooperative detection, the hidden Markov model is used for describing the changing process of busy and idle states of authorization users in an authorization system, so the matrix of the hidden state transition probability in the hidden Markov model is expressed by the arrival rate and the service rate of the authorization users in the authorization system. Each of the cognitive users transmits detection results to a cognitive base station which will process the collected data via the Or-principle so as to get the detection results. At last, the Baum-Welsh algorithm is used for estimating the hidden Markov model and getting the hidden transition probability and confusion matrix, thereby estimating parameters of the arrival rate and the service rate in the authorization system. The authorization user parameter is applicable in cognitive radio systems.

The invention relates to the technical field of communication, and particularly provides a network load balancing method, access network equipment and a network system. The method comprises: a first access network device determining first connection information of a first slice, the first slice being a slice of the first access network device; and the first access network equipment sends the first connection information and the identifier of the first slice to the second access network equipment, wherein the first connection information and the identifier of the first slice are used for the second access network equipment to carry out load balancing. According to the method, each access network device shares the connection information of the respective slice, so that the user equipment can be uniformly distributed among the slices, the load of each slice is not easy to exceed the slice specification configured by the network management side, the capacity of the network system is improved, and the network experience of the user is improved.

The invention discloses a handoff method for MS, which comprises the following steps: a service multi-hop relay base station MR-BS receives auxiliary handoff information sent by RS; and the service MR-BS judges whether to recommend RS as an object station to a mobile station or not according to the auxiliary handoff information. The embodiment of the invention ensures that the service MR-BS obtains the relevant information from RS, so that the service MR-BS of MS can determine to better recommend a potential object station and the relevant information to MS, thereby improving the handoff quality of MS and reducing the failure rate of handoff of MS.