Embodiments include methods and apparatuses for providing access to a network slice in a communication system In an embodiment, a network server that implements a Control Plane (CP) Network Function (NF) may receive a Non-Access Stratum (NAS) message from a wireless transmit and receive unit (WTRU) The NAS message comprises a Mobility Management (MM) message for registration and a Session Management (SM) messages for a specific service provided by the network slice After selecting the network slice, the network server may transmit the SM message to another CP NF in the network slice to establish a communication link between the WTRU and the network slice

Methods for service slice selection and separation

The invention provides a method for Bayes compressed sensing signal recovery based on a self-adaptive measurement matrix and relates to the field of the information and communication technology The method aims at solving the problem that an existing compressed sensing signal recovery method is low in accuracy Based on the design of the self-adaptive measurement matrix in compressed sensing and combined with the Bayes compressed sensing algorithm, a design scheme of the compressed sensing method is obtained The method is characterized in that the designed measurement matrix can be generated in a self-adaptive mode according to different signals, the purposes of determinacy and storage of the matrix are both achieved, and combined with the Bayes compressed sensing recovery algorithm of a relevant vector machine, the priority of a layered structure is introduced The design scheme passes simulation verification, it is confirmed that the good signal recovery effect can be obtained, and the error range of recovered signals can be evaluated The method is suitable for wireless signal transmission occasions in the information and communication technology

Method for Bayes compressed sensing signal recovery based on self-adaptive measurement matrix

The invention relates to an energy perception based method for a cognitive user to estimate parameters of an authorized user in a cognitive radio communication system, belonging to the technical field of parameter estimation for authorized users. The invention aims at solving the problems that in the cognitive radio communication system, the cognitive user cannot obtain parameters of the authorized user during spectrum handover in appearance of the authorized user, and further cannot maximize the benefit. The method comprises that an authorized channel model is established, and the state probability distributions of authorized channels are obtained; busy and idle state changes of the authorized channels are described through a hidden Markov model (HMM), and a hidden state transfer probability matrix of the authorized channels is obtained; the detection probability and the false alarm probability are obtained via calculation in an energy perception method; a confusion matrix is further obtained; and finally the HMM is estimated in a Baum-Welsh algorithm to obtain the estimated value of the HMM. The method of the invention is used for estimating the parameters of the authorized users.

Energy perception based method for cognitive user to estimate parameters of authorized user in cognitive radio communication system

The invention discloses a user scheduling and power distribution method based on an effective capacity in a cognitive radio system. The method can adapt to a difference time delay QoS guarantee. The cognitive radio system comprises a main transmitting terminal, a secondary transmitting terminal, at least two SUs which can be cooperated to each other and several MUs which can not be cooperated to each other. The secondary transmitting terminal can be taken as a fusion center and can process data of the SUs. The method comprises the following steps that step1, a secondary user carries out spectrum sensing, determines a usage state of a channel and acquires detection probabilities of different detection states; step2, according to a parameter of the cognitive radio system, expressions of the effective capacities of the SUs are acquired, a relation of the detection probabilities and the SU effective capacities is established, the effective capacities are optimized under the conditions that average power is limited and an interference to PU is limited, and a final user scheduling and power distribution scheme is acquired taking maximization of the effective capacities as a goal.

User scheduling and power distribution method based on effective capacity in cognitive radio system

The invention discloses a public private network convergence cluster group calling service implementation method, which comprises the following steps of: for each cluster group, configuring group subscription information for a public private network cluster network in an evolved home subscriber server (eHSS), and configuring each member in the same cluster group to be the same; using a trunking control function entity (TCF) in the private network trunking system as a main control center to perform unified scheduling and management of trunking groups and service control and management of registered users of the private network trunking system, and the public network cluster control center is used as an auxiliary control center to perform service control and management on registered users ofthe public network cluster system. The invention further discloses a public and private network fusion cluster group calling service implementation system. By applying the technical scheme disclosedby the invention, the problems of complex configuration, resource waste and inconsistent group members in the existing public-private network fusion cluster group calling service can be solved.

Method and system for realizing group calling service of public private network cluster fusion system

The invention discloses a cross identity registration method for co-group users of a time division-long term evolution-based (TD-LTE-based) public network and cluster and relates to the field of wireless communication, in particular to a cross identity registration method for the co-group users of the public network and the cluster. The invention aims to solve the problem that cross identity registration cannot be realized under a TD-LTE public network and a TD-LTE private network. A method for switching users registered in the public network to users registered in the cluster is characterized in that switching is realized under the conditions that the users complete bidirectional authentication with a cluster application (APP) by a bearing surface and user group information and the priority are synchronous. A method for switching the users registered in the cluster to the users registered in the public network is characterized in that the switching is realized under the conditions that a cluster network is detached but registration statuses of the users in the public network are kept. The cross identity registration method for the co-group users of the TD-LTE-based public network and cluster is suitable for the cross identity registration of the co-group users of the TD-LTE-based public network and cluster.

Cross identity registration method for co-group users of time division-long term evolution-based (TD-LTE-based) public network and cluster

The invention provides a united compressing spectrum sensing method based on iteration attack detection and relates to the field of intelligent communication of broadband cognitive radio The united compressing spectrum sensing method based on the iteration attack detection aims at improving the reliability of spectrum perception A broadband CR network comprising PUEA serves as a target, under the premises that a sampling rate of a signal is reduced by each cognitive radio user through the compressing sensing principle and a sensing result can be reported to a blending center by each cognitive radio user, the power of a signal sent by a main user and route loss parameters are estimated by the blending center through a sensing report from each cognitive radio user, and a measuring residual value is obtained according to each estimated error In the iteration attack detection, the measured residual values are compared, so that abnormal cognition reports influenced by simulation of main user attack are found and removed, the remaining reports are combined, and therefore a reliable united spectrum sensing result is obtained The united compressing spectrum sensing method based on the iteration attack detection is suitable for occasions of intelligent communication of the broadband cognitive radio

United compressing spectrum sensing method based on iteration attack detection

An MIMO (Multiple Input Multiple Output) interference alignment wireless communication method under an F-norm (Frobenius norm) bounded channel error model relates to a signal wireless communication method and aims at solving the problem that network throughputs are significantly reduced when errors occur in a channel condition of a transmitting terminal in the existing interference alignment method. The MIMO interference alignment wireless communication method comprises establishing the F-norm bounded channel error model, providing an encoding matrix sending acquired criterion and a decoding matrix receiving acquired criterion based on an MMSE (Minimum Mean Square Error) and calculating to obtain MSE (Mean Square Error) values of k users in an MIMO system; utilizing a minimax total MSE criterion and a minimax user MSE criterion to calculate to obtain an encoding matrix and a decoding matrix for a kth user in the MIMO system; and performing wireless signal transmission according to the obtained encoding matrix and decoding matrix to achieve MIMO interference alignment wireless communication base on the MMSE. The MIMO interference alignment wireless communication method under the F-norm bounded channel error model is suitable for wireless communication.

MIMO (Multiple Input Multiple Output) interference alignment wireless communication method under F-norm (Frobenius norm) bounded channel error model

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Papers

Cross identity registration method for co-group users of time division-long term evolution-based (TD-LTE-based) public network and cluster

United compressing spectrum sensing method based on iteration attack detection

MIMO (Multiple Input Multiple Output) interference alignment wireless communication method under F-norm (Frobenius norm) bounded channel error model