69results about How to "Guarantee service quality requirements" patented technology

The invention belongs to the wireless communication technological field and relates to a deep reinforcement learning-based heterogeneous cellular network joint optimization method. The invention aimsto solve the joint optimization problem of user association, resource allocation and power control in a downlink heterogeneous cellular network. The non-convexity and composite property of the joint optimization problem are considered. A heterogeneous cellular network system model is established. A multi-agent deep reinforcement learning optimization strategy is put forward. The conditions of users' satisfaction and operators' pursuit of interests are considered. A deep reinforcement learning method is used to obtain an optimal resource allocation, user association and power control joint strategy. Thus, the long-term system effectiveness of the entire network can be realized.

The invention discloses a method of switching communication service, comprising packet commutative field switch and packet switching and circuit commutative field switch. The method comprises that: in the packet commutative field switch, an object base station controller receives switching indication information of the packet switching and the circuit commutative field switch from a source moving management entity and/or a user surface entity; after the object base station controller completes the packet commutative field switch, the object base station controller determines to switch from the packet switching to the circuit commutative field according to the ability of the object district, the dynamic condition and the indication information of the received packet switching and the circuit commutative field switch. The invention also discloses a system of switching communication service. According to the invention, the high-side user equipment is ensured to obtain the resource preferentially, service quality requirement of the communication service of the high-side user equipment is ensured, thereby increasing satisfaction degree of the user.

A method for realizing passive light network operation and management is that general labels of the general multiprotocol label exchange protocol are applied to realize data forward multiple addressing base, the labels are taken as the basis of data service sorting forward. The label exchange path is applied to realize the forward of direct user end to user end, the strengthened route protocol is used to realize uniform flow engineering of passive light network and back bone network, the strengthened signaling protocol is used to realize the uniform label distribution of the passive light network and back bone network and the network management structure is applied to realize a uniform network management platform of the passive light network and backbone network.

The invention discloses an outbound resource scheduling method and device of an outbound capacity restricted asymmetric satellite channel. The device comprises a buffer unit, a business type parameter configuration unit, a user parameter configuring unit, a prior scheduling acknowledgement unit, a non-prior scheduling acknowledgement unit and a resource allocation unit. Outbound messages are classified according to outbound beams; the data businesses belonging to the same outbound beam are classified according to business priorities; the data businesses belonging to the same business type K are arranged according to a first-in first-out sequence; with respect to the data business queue of any one outbound beam, users of [delta]T<k,i> <N*T <subframe > are selected out from the outbound queues of various current business types k as ''emergency users''; the ''emergency users'' are arranged according to [delta]T<k,i>; the outbound data with low [delta]T<k,i> are transmitted preferentially; if there is no ''emergency user'', all outbound users are ranked according to a weighted proportional fair algorithm; and the users with high priories are transmitted firstly. According to the method and the device provided by the invention, the quality of service demands of various businesses of the users and the system performance are ensured.

The invention provides a frequency spectrum admission control method based on cooperative frequency spectrum sensing. The method comprises the following steps: (1) through a cooperative scheme based on a secondary user group (SUG), self-adapting each secondary user SU to form SUGs; (2) for a cooperative sensing fusion strategy, carrying out calculation on a source node SUsor through a cooperative frequency spectrum sensing scheme so as to obtain an optimal value k under the situation of a given n value; and (3) for an acceptance control threshold of a cognitive radio network, analyzing an optimal acceptance control threshold, which can maximize throughput of the SUGs under the restriction condition of global false alarm probability, through a frequency spectrum acceptance control scheme based on cooperative sensing; and through solving of the optimal acceptance control threshold, finishing the whole optimizing process. According to the invention, the frequency spectrum frequency of the network is very well improved and the throughput of the SUGs can be also effectively increased; and the frequency spectrum acceptance control method based on cooperative frequency spectrum sensing, provided by the invention, is applicable to frequency spectrum access and frequency spectrum switching strategies in the cognitive radio network as well as corresponding performance analysis.

The invention provides a vehicle-mounted communication system wireless resource scheduling method, and aims at providing the scheduling method which allows the overall performance of a vehicle-mounted communication system to be improved, allows the fairness of users to be guaranteed and allows the requirements of the users for different services to be met so that the fairness of communication between OBUs at different speeds and an RSU in the vehicle-mounted communication system can be better improved and the time delay requirements of various vehicle-mounted communication services can be met. The method includes the steps that the RSU judges state information of a vehicle, obtains location formation and movement information of the vehicle in the activated state and obtains a speed priority factor of the OBUs, service priority factors of the OBUs are obtained according to the requirements for the service types and the service quality of the OBUs, the channel quality between each OBU and the RSU is obtained according to the location information of the vehicle, the real-time transmission rates of the OBUs are calculated, fairness priority factors are obtained through calculation of the real-time transmission rates of the OBUs, the user priorities of the OBUs are obtained through a scheduling algorithm according to the speed priority factors, the service priority factors and the fairness priority factors, data are transmitted and the average transmission rate is updated and recorded according to the priority sequence, vehicle information and channel information are updated, and the scheduling process is not stopped until the circulation stops.

The invention discloses a radio resource management method used in enhanced multimedia multicast/ broadcast service, which is characterized in that under an enhanced multimedia multicast/ broadcast mixed service scene, a user feeds back a user requirement factor to a base station; the base station sequences based on service numbers according to the accumulated result of service conditions of eachservice in the user requirement factor fed back by the user to form the control surface signaling of a service requirement factor, a multicell/ multicast coordination entity uses the service requirement weight determined by the service requirement factor to schedule mixed services; and a multicell/ multicast coordination entity sets a reasonable service statistical multiplexing threshold to introduce a resource allocation mode based on service statistical multiplexing. On the basis of not affecting the packet loss rate of nonguaranteed bit rate bearer service, the method can improve multicastto ensure the satisfaction of bit rate bearer service users, and can improve the throughput of guaranteed bit rate bearer service under a mixed service application scene, thereby using radio resources more reasonably.

The invention relates to a dynamic spectrum distribution method based on covering frequency in a heterogeneous wireless network. The method is characterized by comprising total frequency spectrum benefit maximization and interference control, wherein the interference control is based on a coverage probability threshold, and the interference control model is p[n,m](A)>=beta n (1); and based on the interference control model, modeling of a covering frequency based dynamic spectrum distribution algorithm (CP-DSA) is defined in the description in the interference control model based on coverage probability, user signal interference noise ratio and base station coverage performance requirement are considered at the same time, starting from the purpose of ensuring the base station coverage probability requirement, to achieve the purpose of ensuring user service quality requirement in a cell; and by adopting the dynamic spectrum allocation algorithm CP-DSA based on covering frequency, the total frequency spectrum benefit can be improved, interference between base stations is effectively controlled, and under the condition of an actual shadow fading channel, the user SIR (signal interference noise ratio) requirement is met.

The invention discloses a multiservice and multiaerial broadcast channel scheduling method based on an indistinct satisfaction degree factor, which is characterized in that the influence of the variation tendency of the time delay and the speed of different services to the satisfaction degree and the schedule of a user is considered, the user is scheduled by maximizing the channel quality using the indistinct satisfaction degree as the weighing, thereby the influence of the lag error to the schedule is avoided. The invention can better measure the satisfaction degree of the user and avoid the lag error. The simulation result indicates that compared with other scheduling methods based on the measure criteria of the satisfaction degree, the scheduling method of the invention more reasonably considers the satisfaction degree of the user under different time delays and speeds and the variation tendency thereof, better utilizes the frequency spectrum resources, ensures the justification of the user under the premise that the throughput rate is not lowered, more effectively ensures the service quality demands of the user, and maximizes the satisfaction degree of the system.

A quality control method for multicast service based on IPv6 belongs to the field of computer network communication. The method expands MLDv2 protocol, and adds service type fields; adds service type fields in PIM-SSM protocol message; adds data-description object and resv-description object in RSVP message; expands sender-tspec object and flowspec object in standard RSVP protocol; expands multicast router table, adds service type fields, control scheme fields, distribution layer/bandwidth fields, queue serial number fields and filter serial number fields to realize quality control for multicast service based on IPv6. The invention uses current network resource in a minimum way to ensure the service quality requirement of users; when the network is overloaded or congested, the service quality control method can prevent the important portfolio from being delayed or abandoned and ensure the efficient running of the network.

The disclosed address conversion method for media flow crossing network comprises: it transmits user media flow to the BGF entity; the latter matches the media mapping relation binding with media mapping message according to mark and original address in media to determine the port, and transmits the media flow. It also discloses a network system for the address conversion.

The invention provides an access control method and an access control system for a D2D communication link. The access control method comprises the steps of: judging a service type of data transmission of the current D2D communication link; establishing a mathematical model of connecting time of data transmission of the D2D communication link according to social information of the current D2D communication link when the service type of data transmission is a time sensitive type; calculating an access success rate of the current D2D communication link according to the mathematical model of connecting time; and comparing the access success rate of the current D2D communication link with a preset target success probability, and adding the current D2D communication link into an admission set conforming to access control if the access success rate of the current D2D communication link is greater than or equal to the preset target success probability. The access success rate of the D2D communication link is obtained by adopting the access control method, the service quality requirement of the D2D communication link is guaranteed, and the selection rate of the D2D communication link is increased.

The invention relates to the technical field of heterogeneous networks. The invention discloses a heterogeneous network vertical switching algorithm and system based on a multi-objective optimizationmodel. In order to improve the resource utilization rate of a heterogeneous network system and ensure the service quality requirement of a user, the algorithm comprises the following steps: calculating Gittins indexes reflecting the performance characteristics of each base station in different states in the heterogeneous network according to related parameters, and generating a Gittins matrix in the heterogeneous network; calculating a transmission rate matrix and an error rate matrix of the user before switching execution; setting a matrix variable for reflecting a user switching strategy; constructing a multi-objective optimization model by taking the Gittins matrix, the transmission rate matrix and the bit error rate matrix as parameters and taking matrix variables as decision variables; and solving a matrix variable in the multi-objective optimization model to determine an optimal switching strategy.

The invention discloses a solving method of non-service subdistrict disposal problem in high-speed up-grouping connection system, which includes: calculating adjustable velocity gear according to parameter which affects users terminal UE operation velocity requirement; arranging the adjustable velocity gear as the top gear in normal condition, strengthening the top bit velocity of the special message channel E-DCH to the top gear velocity, the wireless network controller RNC collocating E-DCH the top bit velocity to the basic station Node B, and according to the top bit velocity E-DCH of each UE, the Node B reserving user surface hardware source for the attempering result of each UE; and arranging the adjustable velocity gear as the bottom gear on matter condition. The invention also discloses a solving method of non-service subdistrict condition transference in high-speed up-grouping connection system. Adopting the method of the invention can avoid the problem of continuously Nobe B decoding error to finally cause conversation cutting off on the condition of user surface source lack.

The invention discloses a wireless network resource management method and device. A wireless network resource pool is initialized. Wireless network resources are divided into a number of time slots, frequency bands and power sections along time dimension, frequency dimension and power dimension. The wireless network resources on the time slots, the frequency bands and the power sections form wireless network resource blocks. The wireless network resource blocks are allocated to users according to the service quality needs of one or more users. According to the channel information of the users in different frequency bands and time slots, the location of allocated wireless network resource blocks in the wireless network resource pool is determined. The location information of the wireless network resource pool comprises the time slot, the frequency band and the power section of the wireless network resource blocks. According to the service quality needs of one or more users, the power of allocated wireless network resource blocks is adjusted. According to the invention, flexible resource allocation, high energy efficiency and low computational complexity are realized.

The method comprises: during transmitting data in physical layer, using a data frame structure with a fixed time length to transmit data; said data frame structure comprises fields, frame synchronization, frame initiation and sub-channel bearing data service; according to a preset rule, mapping the service type corresponding to the transmitted data into the sub-channel bearing the data service. By using a frame structure with a fixed time length, the real-time QoS can be ensured, and the bandwidth can be allocated based on the variation the network traffic.

The invention provides a wireless mesh network opportunity routing algorithm based on service quality assurance, belongs to the technical field of wireless communication, and aims at periodically interacting information with each node in a network to obtain the real-time state of the network. When a node needs to forward service data, firstly, a candidate node forwarding range is selected directionally according to geographical location information; and then according to the network state and service quality requirements, selecting an appropriate candidate next hop node set, and carrying out priority ranking on the candidate next hop nodes, the higher the priority is, the more possible the next hop is. And if no candidate node successfully becomes the next hop, temporarily caching the data, and re-sending the routing request. According to the invention, the real-time state of the network link is combined, the service quality requirement is fully considered in the process of selecting the candidate next hop node to forward the data, and the priority ranking is carried out on the candidate next hop node, so that the reliability of data forwarding is ensured, and the service quality requirement of data forwarding is effectively ensured on the basis of improving the real-time utilization efficiency of the network.

The invention discloses a multi-base-station multi-user proportional-fairness scheduling method with guarantee of the service quality, and mainly solves the problem that resource scheduling is unfair in the prior art due to neglect of the user service quality. The method comprises the steps that 1) parameters are set according to a practical scheduling problem; 2) the user weight is calculated according to the time averaging throughput of each user; 3) a base station determines the user to serve in the present time slot according to the user weight and the time averaging throughput; 4) after the user to serve in the present time slot is determined, the base station updates the local user throughput, and broadcasts local user throughput information to other bases stations in the network; and 5) scheduling in the roll is terminated according to a scheduling termination condition, and a scheduling result which satisfies the proportional fairness is obtained. Satisfied scheduling result can be obtained when the resources are sufficient or insufficient, the computational complexity is low, the base station scheduling efficiency in the time-varying channels is improved, and the method can be applied to large-scale wireless local area network with multiple adjacent wireless routers.

The invention provides a differentiated service realization method in wireless multimedia sensor networks under a coal mine. The method mainly comprises the steps of setting environment monitoring nodes, voice nodes and video nodes in the wireless multimedia sensor networks under the coal mine; designing different competition windows for sensing data business, voice business and video business according to different business quality demands of the sensing data business, the voice business and the video business; and transmitting data business to a ground monitoring center by the environment monitoring nodes, voice nodes and video nodes through channels of the wireless multimedia sensor networks according to set business transmission competition strategies based on various competition windows. According to the method, differentiated service of three kinds of business is realized, so different quality of service demands of the three kinds of business is ensured, the throughput capacity of the sensing data business and the voice business is increased by reducing the throughput capacity of the video business, and the time delay of the sensing data business and the voice business is reduced by increasing the time delay of the video business.

The invention discloses a mobile edge computing resource management method based on network slices. The method comprises the following steps: S1, integrating a mobile edge computing server in a wireless base station; S2, sharing and mapping communication resources and computing resources of the wireless base station, and then creating a plurality of slice networks, wherein only one slice network provides service for equipment of each terminal user; S3, enabling the equipment of each terminal user to send application program scene information to the corresponding virtual network operator; S4, enabling the virtual network operator to send a request to the wireless base station; S5, enabling the wireless base station to construct a communication bandwidth resource and edge computing CPU frequency configuration joint optimization model; and S6, solving the constructed information bandwidth resource and edge computing CPU frequency configuration joint optimization model, and determining a distribution scheme of the communication bandwidth of the terminal user equipment and the mobile edge computing CPU frequency. According to the invention, the resource utilization rate is improved, and the service quality requirements of different types of terminal users can be ensured.

The embodiment of the invention discloses a network resource allocation method and device. The method is applied to an LTE-U system, and comprises the following steps: receiving a downlink reference signal from a base station, obtaining the signal to interference plus noise ratio of different subcarriers of user equipment on each carrier component, and converting to obtain the equivalent signal tointerference plus noise ratio of the user equipment on the carrier component; obtaining the channel quality of the user equipment on the carrier component according to a preset mapping relationship,and clustering the user equipment according to the channel quality and the position feature information of the user equipment to obtain multiple types of user equipment; and judging whether the various user equipment is interfered by the Wi-Fi system, and finally allocating network resources used by the various user equipment. By implementing the method and the device, the problem that the networkresource allocation is influenced due to the hidden terminal problem in the prior art is solved, and the optimal network resource allocation scheme is obtained to ensure the service quality requirement of a user.

The invention discloses an anti-jitter robust beam forming optimization method for a millimeter wave unmanned aerial vehicle communication system, and the method comprises the steps: enabling the unmanned aerial vehicle millimeter wave communication system to receive the feedback information of GPS positioning and a user backhaul channel in real time, obtaining a beam forming vector transmitted by an unmanned aerial vehicle, obtaining the information of a pitch angle and an azimuth angle between the unmanned aerial vehicle and a ground user, and carrying out the anti-jitter robust beam forming optimization. The upper limit value of the unmanned aerial vehicle jitter error is obtained; importing a jitter error model, calculating the downlink transmission capacity sum of a plurality of ground users according to the unmanned aerial vehicle transmitted beam forming vector and the noise power, and determining a transmitted beam forming optimization problem; and carrying out deterministic transformation on an optimization problem of the jitter error model based on a convex hull theory, and solving by utilizing a continuous convex approximation method to obtain a beam forming vector parameter. According to the method, the unmanned aerial vehicle millimeter wave communication system with the optimal anti-jitter robust wave performance is determined based on the unmanned aerial vehicle millimeter wave transmitted beam forming optimization problem model with the known vector parameters, and the anti-jitter capability of the unmanned aerial vehicle millimeter wave communication system is improved.

The invention provides a SaaS data access quality enhancement method, and relates to the field computer networks. The method comprises the following steps of S101, determining the level of a data access request according to the requirement of a SaaS data access, a data packet access sequence and the processing capacity of a storage system; S201, segmenting the stored request according to the determined data access request level, and determining a method for requesting queue scheduling after segmentation is completed; S301, verifying schedulability of the determined method for requesting the queue scheduling; and S401, if a result indicates that verification is passed, performing data scheduling according to the determined method for requesting queue scheduling, repeating the step S201, until the verification is passed, and then performing data scheduling according to the determined method for requesting queue scheduling. According to the method provided by the invention, the performance of users can be isolated by using the method for requesting queue scheduling aiming at the multi-user characteristic of SaaS, the segmentation of the stored request and multi-stage queue schedulingbased on service level classification are used, and the requirement on quality of service of the different levels of users is met.