Nec Corporation

Tomoaki Hokao

Takanori Iwai

Yoshinori Watanabe

Kenki Takagi

Hisashi Futaki

Toshiyuki Tamura

Sadafuku Hayashi

Nobuhiko Itoh

Naoaki Suzuki

Michihiro Ohsuge

Kazuki Eguchi

Kouichi Kimura

Ling Xu

Tooru Kikuchi

Hiroki Aoki

Hideki Bessho

A network entity () sends, to a mobility management entity () or a subscriber server (), a request message in order to configure the mobility management entity () to report a second identifier to be used by a radio access network node () for identifying a radio terminal (). Further, the network entity () receives the second identifier from the mobility management entity () directly or through the subscriber server () and communicates with the radio access network node () by using the second identifier. It is thus, for example, possible to allow an MEC server (or an MEC application hosted on the MEC server) and the radio access network (RAN) node to directly exchange therebetween control messages regarding a specific radio terminal.

Mobility management entity, network entity, and method and computer readable medium therefor

A traffic controller () receives, from a traffic monitor (), a first control message generated in response to an increase in a total transmission rate of a plurality of packet flows sent from a plurality of wireless terminals () to a specific external network. The controller () determines, based on an evaluation criterion received from a criteria manager (), one or more packet flows on which traffic shaping is to be imposed. In response to the first control message, the controller () controls a base station within a RAN () or a packet transfer node within a mobile backhaul () to execute the traffic shaping. This, for example, contribute to adjusting traffic that passes through a cellular communication network based on a monitoring result of a total transmission rate of traffic sent from the cellular communication network to the external network.

Communication network apparatus, communication network system, and method of communication network apparatus

An information processing device () stores information (hereinafter, referred to as communication network information) in advance, which information indicates whether or not a communication network () is compatible with a Fast Dormancy function. Then, the information processing device () reads the communication network information of the communication network () when a packet communication with an information server () is ended, and sets a free procedure of a communication channel based on the communication network information that is read. Then, information processing device () frees the communication channel according to the free procedure that is set.

Communication device, communication system, communication method, and program

The present invention provides a mobile communication terminal that enables notification of some kind of information regarding an emergency notice to a user when a part of data composing the emergency notice message can be received. The mobile communication terminal operates in compliance with a wireless system of 3GPP standard, and includes a channel evaluation unitor a message evaluation unitthat, when a part of a PDU (Protocol Data Unit) is received from a base station among the PDU necessary for generating a Service Data Unit, evaluates at least one of a channel type and a message type of the part of received PDU, and a control unitthat notifies the user that the emergency notice is generated when the channel type or the message type evaluated by the channel evaluation unitor the message evaluation unitindicates information regarding the emergency notice.

Mobile communication terminal, emergency notice reception method, and non-transitory computer readable medium storing emergency notice reception program

A mobile terminal comprises an antenna, radio unit, signal processing unit, signal analyzer unit, received signal information storage unit, and reception quality storage unit. Signal processing unit comprises a received signal processing unit and notified information processing unit, while the received signal information storage unit comprises a common pilot channel information storage unit and common control channel information storage unit. Received signal processing unit measures the reception quality of a common pilot channel and stores it in the common pilot channel information storage unit. Notified information processing unit extracts transmission power of the common pilot channel and common control channel from report information, and then stores them in the common control channel information storage unit. Signal analyzer unit calculates the reception quality of the common control channel and the interference signal level, based on the information stored in the received signal information storage unit.

CDMA-based mobile terminal, CDMA-based mobile communication method, and communication quality estimating method

The present invention provides a mobile communication system capable of effectively utilizing the limited reception resources available to the UEs and thereby performing steady communication for use in the handover control of UEs. A UE, during communication, determines a handover destination cell according to the result of measurement of the CPICH reception level of each of cells: (1) it measures the reception quality of the downlink DPCH of each of the cells and utilizes the result for the selection of the handover destination cell; (2) switches the handover destination cell and searches for a cell needed for obtaining required communication quality; (3) observes the displacement of the CPICH path loss of each of the cells; and (4) observes whether or not the downlink DPCH transmission power is controlled on the basis of the power request from the UE for each of the handover destination cells.

Mobile communication system, UE, handover control method for use thereof and program thereof

A network station sends a switching instruction to a mobile unit. The mobile unit has two receiving sections and a transmitting section operable in two data formats. Upon receipt of the switching instruction, the first receiving section switches from a first data format to a second data format. The transmitting section sends an acknowledgment signal to the network. The first receiving section and transmitting section then attempt to switch to the second data format. The second receiving section remains in the first data format. The first receiving section then attempts to achieve synchronization. If synchronization is successful, a completion notice is sent back to the network station and the second receiving section is switched from the first data format to the second data format. If the synchronization is not successful, the second receiving section switches both the first receiving section and transmitting section back to the first data format and the first receiving section waits for a further switching instruction from the network.

Channel switching method and mobile communication terminal using the same

Mobile communication terminal equipment for a CDMA cellular phone system includes a detection section, memory section, control section, and measurement section. The detection section performs cell detection by detecting the scramble codes of a visiting cell and neighboring cell. The memory section stores scramble codes. The control section controls to write the scramble codes of the visiting cell and neighboring cell, detected by the detection section, into the memory section. The measurement section measures the detection frequencies of the scramble codes and intra-cell stay times. A control method for cell detection in mobile communication terminal equipment for a CDMA cellular phone system and a recording medium recording a program for a control method for cell detection in mobile communication terminal equipment for a CDMA cellular phone system are also disclosed.

Mobile communication terminal equipment, control method therefor, and recording medium on which control program therefor is recorded

A mobile station is disclosed for performing an automatic frequency control based on a correspondence of a frequency error and TCXO control voltage to a base station. A plurality of frequency error measuring units each measure a frequency error between an internal clock signal and a clock signal in a specified base station. A plurality of control voltage calculators, each associated with a corresponding one of the plurality of frequency error measuring units, integrate a frequency error measured by the corresponding frequency error measuring unit to produce a control voltage. A control voltage selector selects a control voltage corresponding to a base station currently in communication with the mobile station from among control voltages calculated by the plurality of control voltage calculators. A clock signal generator generates an internal clock signal at a frequency in accordance with the selected control voltage. A memory has stored therein a set of a scramble code of each base station corresponding to a frequency error measured by a frequency error measuring unit corresponding to the base station, and a control voltage selected by the control voltage selector. Later, when the mobile station switches a base station unitized for the frequency control (hand-over), a frequency error and TCXO control voltage corresponding to a scramble code (or identification ID) of a base station, to which the mobile station is newly connected for communication, are read from the memory, when the scramble code is stored in the memory, for utilizing in the frequency control.

Mobile station capable of performing automatic frequency control based on correspondence of frequency error and TCXO control voltage to base station

A transmitting and receiving circuit, a mobile communication terminal device using the same, a control method and a storage medium storing a control program permit interruption of operation of associated functions including a code generator in a time zone where transmission or reception is not performed in discontinuous transmission operation, whereby to prevent wasteful power consumption, and which can be realized with simple construction. The circuit of a mobile communication terminal device of CDMA system has code generating means for generating a multi-bit code necessary for transmission and reception, storing means for storing value of each bit of the code generating means, and control means for writing value of each bit at an arbitrary timing of the code generating means, reading the value of each bit stored in the storage means at an arbitrary timing and setting to each corresponding bit of the code generating means.

Transmitting and receiving circuit, mobile communication terminal device employing the same and control method therefor

A mobile station (MS) has a radio portion (), a combining portion (), a data processing portion (), and a control portion (). The mobile station (MS) further has a first receiving portion (), a second receiving portion () between the radio portion () and the combining portion (), and a transmitting portion (). The first receiving portion () temporally early rounds a chip offset off while the second receiving portion () temporally late rounds the chip offset off.

CDMA type mobile station having first and second receiving portions for rounding off a chip offset temporally early and late

A mobile terminal of the invention includes a language translation unit and stores in advance a language used in the mobile terminal. When the mobile terminal calls or receives a call, the mobile terminal recognizes a country ID corresponding to a people who is called by the mobile terminal or who calls the mobile terminal, by using a telephone number, notification information of a base station, or a control signal from the mobile terminal. Then, the mobile terminal performs language translation by using a translation pattern determined based on the language used in the mobile terminal and the country ID.

Mobile terminal with an automatic translation function

A receiving circuit has a speech/no-speech signal detector for detecting whether there is a speech signal or not based on data inversely diffused by finger receivers, and a clock controller for controlling operation of the finger receivers based on a detected result from the speech/no-speech signal detector. If a speech signal is detected by the speech/no-speech signal detector, then the clock controller controls all the finger receivers to operate. If no speech signal is detected by the speech/no-speech signal detector, then the clock controller controls only one or two of the finger receivers to operate.

Receiving circuit, mobile terminal with receiving circuit, and method of receiving data

In response to the resetting of a timer , a received electric field level measuring unit measures the received electric field level in a predetermined time, and a control unit computes the average level Vav in that time and compares this level Vav with a threshold level Vth. The unit then computes a cycle period Tav of generation of levels in excess of the threshold level Vth in a predetermined time, and compares this cycle period Tav with a threshold cycle period Tth for high speed movement judgment as set in a memory . When Tav is shorter than Tth, the unit judges and recognizes that the telephone set is in high speed movement, so that it can give an alarm to the person carying the telephone is set while at the same time changing the received sound level or automatically informing that the telephone set is in high speed movement.

Speed esimation for digital cordless telephones

A finger receiver has a data decision unit for deciding whether there is received data or not. If the data decision unit determines that there is received data, then a symbol data selector outputs, to a circuit at a later stage, accumulated and added symbol data at one of complex-inverse diffusing points in a plurality of phases, which is detected as having a maximum accumulated slot power value by a maximum value detector. If the data decision unit determines that there is no received data, then the symbol data selector outputs, to the circuit at the later stage, accumulated and added symbol data at the same point as the accumulated and added symbol data outputted in a preceding slot.

Growing community of inventors

Tokyo, Japan

Tomoaki Hokao