33results about How to "Implementation complexity can be reduced" patented technology

The present invention defines signaling required for separating a network entity (NE) responsible for mobility management (MM) and session management (SM), which are main function of a control plane (CP) in a next generation (NextGen) mobile communication system, and presents a basic procedure for providing mobile communication services including the signaling. Therefore, complexity of core equipment responsible for the CP is reduced in order to implement a network slice function and provide various levels of mobility, and an effect of minimizing a signaling load therebetween can be obtain. In addition, it is possible to efficiently manage the resources of a base station (radio access network (RAN)) and a user plane network entity (UP NF).

Disclosed is a technique for an access control operation of a user equipment (UE) in a next-generation mobile communication network, and more specifically, a unified access control method for a UE and a specific access control method for a service with low sensitivity. Further, a method of a UE is provided for performing an access control operation. The method may include receiving operator-defined access category information through non-access stratum (NAS) signaling when an access attempt of the UE is triggered, determining one access category for the access attempt in an NAS layer or an access stratum (AS) layer; selecting RRC establishment cause information associated with the access category; and performing an access barring check operation in the AS layer using access barring parameters associated with the access category.

A novel method and apparatus for efficiently coding and decoding data in a data transmission system is described. A concatenated coding scheme is presented that is easily implemented, and that provides acceptable coding performance characteristics for use in data transmission systems. The inventive concatenated channel coding technique is well suited for small or variable size packet data transmission systems. The technique may also be adapted for use in a continuous mode data transmission system. The method and apparatus reduces the complexity, cost, size and power consumption typically associated with the prior art channel coding methods and apparatuses, while still achieving acceptable coding performance. The present invention advantageously performs concatenated channel coding without the necessity of a symbol interleaver. In addition, the present invention is simple to implement and thereby consumes much less space and power that do the prior art approaches. The present invention not only eliminates the need for a symbol interleaver between the outer and inner codes, but it also enjoys a drastically reduced implementation complexity of the inner code Viterbi decoder. The preferred embodiment of the present invention comprises an inner code having short length block codes derived from short constraint length convolutional codes utilizing trellis tailbiting and a decoder comprising four four-state Viterbi decoders having a short corresponding maximum length. The inner code preferably comprises short block codes derived from four-state (i.e., constraint length 3), nonsystematic, punctured and unpunctured convolutional code. One significant advantage of the preferred embodiment of the present concatenated coding technique is that packet data transmission systems can be designed to have variable coding gains and coding rates.

Embodiments of the present disclosure disclose a user-oriented communication method, a route registration method and device, and a communication system. In the method, a first domain router receives a first data packet sent by a first terminal. The first data packet includes a user identifier of a first user and a user identifier of a second user, the first terminal belongs to the first user, and a second terminal belongs to the second user. The first domain router queries for a second domain router connected to the second terminal according to the user identifier of the second user and sends the first data packet to the second domain router, so that the second domain router sends the first data packet to the second terminal.

A radio resource measurement method in a heterogeneous network includes a user equipment (UE) that performs radio resource measurement; when a measurement result meets a predefined condition, the UE performs radio resource measurement on restricted resources according to configuration information of the restricted resources, wherein the restricted resources are a set of all sub-frame resources corresponding to Almost Blank Sub-frames (ABSes) or are a subset of the set. Therefore, the precision of RLM measurement or RRM measurement of a mobility system can be improved, and the implementation complexity of the UE can be decreased.

A transmission method comprises: generating a transmission signal including OFDM symbols, wherein the last OFDM symbol of the OFDM symbols can be partitioned into four segments, and wherein the generating includes: computing an initial padding factor value associated with one of the four segments and computing an initial number of OFDM symbols; determining a user with a longest packet duration among plural users; determining a common padding factor value being the initial padding factor value and a common number of OFDM symbols being the initial number of OFDM symbols of the determined user with the longest packet duration; adding pre-FEC padding bits toward one of four possible boundaries of the last OFDM symbol, the one of four possible boundaries being represented by the determined common padding factor value; and adding post-FEC padding bits in remaining segment(s) of the last OFDM symbol; and transmitting the generated transmission signal.

A communication method and terminal assist hearing and speech impaired persons. The communication method includes generating a text by combining at least one character input in a text call mode. The text is converted to a speech, and the converted speech is transmitted to a counterparty terminal. The communication terminal of the present invention is capable of converting the text input by the user to a speech signal for the counterparty terminal and converting the speech signal received from the counterparty terminal to a text such that it is possible for the user to conduct a communication with the counterparty regardless of whether the counterparty is a hearing or speech impaired or whether the counterparty's terminal supports the text call service, resulting in reduction of the text call service implementation complexity and improvement of user convenience.

A ZF joint detection apparatus for a downlink receiver, the apparatus comprising: a channel estimator for estimating a channel impulse response of a multipath fading channel of a received signal; a channel equalizer for estimating a transmission signal by performing channel compensation and removing multipath interference by a deconvolution technique based on the estimated channel impulse response; and a user detector for detecting a symbol-level data sequence transmitted by a specific user by despreading the transmission signal estimated by the channel equalizer with a spreading code for the specific user and a scrambling code.

The embodiments provide a multi-stage phase estimation method and apparatus. The apparatus i a multi-stage phase estimation configuration. Each stage of the phase estimation configuration includes metric computation modules. Each of the metric computation modules computing a distance metric and search phase angles according to an input signal and an initial search phase angle or a search phase angle of the former stage phase estimation configuration. The number of the metric computation modules is equal to that of the search phase angles of this stage. A selection module selects the search phase angle corresponding to the minimal distance metric as the phase estimation result output of this stage according to the computation results of all metric computation modules. The average time window length of the former stage phase estimation configuration is larger than that of the subsequent stage phase estimation configuration.

A new multiuser detection scheme EPIC (Equalized Parallel Interference Cancellation) is disclosed. A rake receiver signal zRake output by a rake receiver is detected, which receives a spread spectrum composite signal r comprising plural user signals b1,b2, . . . ,bK that have been spread with spreading codes. At first, first hard-decision values bRake are produced on the basis of the rake receiver outputs. Then, first parallel interference cancellation values are produced on the basis of the first hard-decision values, and second hard-decision values bPIC are produced on the basis of the first parallel interference cancellation values. After that, the first and second hard-decision values are combined for producing first combination values, and second parallel interference cancellation values are on the basis of the first combination values. Finally, third hard-decision values are produced on the basis of the second parallel interference cancellation values and the third hard-decision values are output as first stage equalized parallel interference cancellation values bEPIC(1).

The disclosure provides a method and a device for dynamic scheduling in a User Equipment (UE) and a base station. The UE detects a first signaling. The first signaling is a physical layer signaling. The first signaling includes a first bit block, and a number of bits in the first bit block is related to a transmission mode of the first signaling. The transmission mode of the first signaling is one of multiple candidate modes. For the first candidate mode, the first bit block is transmitted multiple times; and for the second candidate mode, the first bit block is transmitted once. The disclosure establishes a relationship between a payload size of the first signaling and a transmission mode of the first signaling, thus reducing the payload size of the first signaling, simplifying the complexity of blind decoding of control signalings, and improving transmission efficiency and spectrum efficiency of the system.

In the field of communications, a method, a system, and a device for implementing service forwarding are disclosed. The method includes: establishing an optical network tunnel between data communication devices; triggering physical interfaces of the data communication devices directly connected to an optical network to start a link layer protocol after the optical network tunnel is successfully established; performing, by the data communication devices, link layer negotiation through the optical network tunnel according to the link layer protocol; setting a link layer state between the data communication devices and a physical state of the physical interfaces to be valid after the link layer negotiation is performed successfully; and implementing, service forwarding, by the data communication devices through the optical network tunnel after the link layer state and the physical state of the physical interfaces are set to be valid. In this way, Internet Protocol (IP)/Multi-Protocol Label Switching (MPLS) service forwarding of the data communication devices is implemented, implementation complexity of bearing the IP/MPLS service over a Generalized Multi-Protocol Label Switching User-Network Interface (GMPLS UNI) tunnel is reduced, reconstruction on an IP/MPLS control plane and a forwarding plane is decreased, and forwarding performance is improved.

The present invention discloses a method for implementing a digital television technology, including performing, by a wireless fidelity hot spot apparatus, decryption and parsing on a received digital television data stream, obtaining an audio stream, a video stream, and a system stream, performing packing on the obtained audio stream, video stream, and system stream according to a predetermined format, sending the packed audio stream, video stream, and system stream to a terminal by using a wireless fidelity technology, and performing, by the terminal, decoding and playback on the packed audio stream, video stream, and system stream received from the wireless fidelity hot spot apparatus. The present invention also discloses a wireless fidelity hot spot apparatus. By applying the method and the apparatus according to the present invention, implementation complexity of a digital television technology is decreased.