1174 results about "Current cell" patented technology

An apparatus and method in a heterogeneous wireless communication system reconnect a Mobile Station (MS) to a previously connected cell upon occurrence of a Radio Link Failure (RLF) in a current cell when a portion of a coverage of the second cell is included in a coverage of the first cell. A Mobile Station (MS) stores system information of a first Base Station (BS) of a first cell when performing handover from the first cell to a second cell. When changed system information of the first BS is received from a second BS of the second cell, the MS updates the stored system information using the changed system information. When detecting that a connection with the second cell is lost prior to a handover from the second cell, the MS performs reconnection to the first BS using the stored system information.

A pre-synchronization method in which the source cell chooses a signature for the user equipment (mobile) to use in the target cell for RACH access, and instructs the user equipment to perform RACH access and return to the current cell before a handover command (break command) is issued. This causes parallel execution of the UL synchronization process with the context transfer process among the two base stations.

Disclosed is a mobile communication system for providing a number of User Equipment (UEs) positioned in a plurality of cells with Multimedia Broadcast / Multicast Service (MBMS) using CDMA technology. A Radio Network Controller (RNC) transmits a MBMS availability message to each of the plurality of cells under management regarding at least one MBMS which is available in a corresponding cell in order to support the mobility of the UE which receives the MBMS. The UE decides whether it can receive a desired MBMS in the current cell, after receiving the MBMS availability message, and requests the desired MBMS or reselects another cell. The continuity of MBMS reception is improved while UEs using the MBMS are moving and the overhead of RRC connection setup for unnecessary MBMS request is reduced.

A cell phone (20Z) is provided with a short-range wireless transceiver (28). This transceiver is used to pick up local information from local transmitters (51B). In many instances this local information is insufficient to locate the user, being, for example, information about the local branch of a business (50B) having many branches. However, by combining this local information with a locality indicator, such as current cell ID for the cell in which the cell phone (20Z) is camped, it is much more likely that the location of the user can be established without ambiguity. A service system (40) is provided that has a database (42) searchable by locality indicator and local information to provide the user's current location. As well as, or alternatively to, providing user location, the database (42) can be used to provide information about the locality of the user or about the party controlling the local transmitter (51B) from which the local information was obtained.

In a charging system for cellular communications, real-time prices for new connections are offered to the customer. The real-time prices take into account both prevailing and historic traffic patterns, together with the probability that the customer will move from their current cell into a neighboring cell. Cells of the network are monitored in clusters. If a customer is located in one particular cell, the price offered to that customer will take into account the probability of handover to a neighboring cell during the connection, and may also take into account the probability of incoming traffic from neighboring cells during the connection. To enable this predictive pricing, the system stores, and may also update, historic data.

The invention discloses a method and a device for paging in device-to-device communication, relating to the technical field of communications and being capable of improving the paging efficiency and reducing error rate. In the embodiments of the invention, the method comprises the following steps of: discovering the paging destination UE (User Equipment) in the D2D (Device-to-Device) communication through a discovery subframe, and determining an equipment identifier of the paging destination UE; determining a paging time frequency resource corresponding to a paging subframe of the paging destination UE according to the equipment identifier of the paging destination UE and the current Cell of Origin frame timing; and transmitting a paging request message for D2D communication to the paging destination UE at the paging time frequency resource. The scheme provided by the embodiments of the invention is suitable for being used in the D2D communication.

The erasion level appending range of a file is instructed. According to this instruction, the erasion level is set. When this setting range does not agree with the cell unit of the current cell, the current cell is divided to set a sequence of divided cells. Playback management information of each of the divided cells and current cell is re-created, and erasion level information is appended to playback management information of the divided cell that belongs to the appending range.

The present invention discloses a method and system for measuring and reporting a multimedia broadcast multicast service, for solving the technical problem of how to measure and report a measurement result reflecting MBMS performance by the UE. In the present invention, the UE measures the MBMS according to a measurement configuration, and when a measurement reporting norm is met, the UE reports a measurement result or a measurement log of the measured MBMS measurement quantity to a network side. By the method, the operators can be assisted to timely understand the MBMS service performance of the current cell and can timely find the potential problems according to the measurement reporting result, and then resolve the problems as soon as possible; furthermore, the efficiency and cost problems caused by previous drive test can be effectively saved, and the service performance is improved.

A multimedia broadcast / multicast service (MBMS) service and a method and apparatus for maintaining congestion and a signal transfer load of a cell at a suitable level when a session of the MBMS service is terminated in a frequency layer convergence (FLC) situation in which the MBMS service is provided in a preferred frequency layer (PL). When a session of the MBMS service is terminated, a radio network controller (RNC) determines if a cell selection is required in UEs, desiring to receive the MBMS service located in the PL cell, by using a start time of a new session and load levels of a current cell and other cells, and sends, to the UEs, explicit cell selection indication information along with session stop information according to a determination result. Therefore, the congestion and signal transfer load of the cell can be maintained in the suitable level.

A method for transmitting information required for user equipment mobility state detection is provided. The method includes broadcasting, at a base station, system information including frequency information and cell identifiers (IDs) of cells co-located with a current cell geographically; and transmitting, when an handover is detected, a handover command message including a handover factor indicator indicating whether the handover was triggered by movement of the user equipment, wherein the user equipment detects the mobility state based on the information provided by the system information and the handover command message. The apparatus and method of the present invention allows the UE to add the cell reselection / handover triggered by movement of the UE to the number of cell reselections / handovers and subtract the cell reselection / handover triggered by a non-mobility factor from the number of cell reselections / handovers used for determining the UE mobility state thereby improving accuracy of the UE mobility state detection.

A method and apparatus for enabling partial combining on a Multimedia Broadcast / Multicast Service (MBMS) service are provided where a radio network controller (RNC) specifically informs a user equipment (UE) whether an MBMS service signal of the current cell is combinable with the same MBMS service signals received from different cells for each individual service or timing, through an MCCH or an MSCH, which is a type of a logical channel for an MBMS service, in a Uu interface. The UE combines the MBMS service signals transmitted from the different cells, thereby obtaining a gain in terms of utilization of transmission power and radio resources.

A cell load balancing method, a cell load measuring method, and devices thereof are provided. The cell load balancing method includes: acquiring information of the load of a current cell and information of the load an adjacent cell; determining a target cell in which a mobility parameter needs to be modified thereof according to the information of the load of the current cell and the information of the load of the adjacent cell; sending a parameter modification request to the determined target cell; and performing a corresponding operation according to information indicating whether the parameter is successfully modified and fed back from the adjacent cell. With the above solution, a load balancing solution can be better implemented in a network, thereby improving a capacity of the network, improving a success rate of user access, and reducing access delay.

The invention discloses a cell management system. The system is formed by a mainboard, a current limiting board and a display panel. The mainboard is a technology core of the system. The mainboard completes monitoring of a voltage of a single cell and a temperature and equalization management, monitors the total voltage and the current, manages charging, discharging and a cell running state, estimates a battery-pack charged state and carries out system protection and fault diagnosis alarm. The current limiting board limits a charging current of a charger. The mainboard controls on and off of the current limiting board through a switching value. The display panel completes a state information display function of the battery pack. The mainboard and the display panel are communicated by using serial port communication. Through the display panel, a current cell management system state can be known in real time. The system possesses a cascade function. Communication connection is performed on a plurality of systems through an RS485 interface. Through using an RS485 bus, a transmission rate is increased; electromagnetic interference is effectively reduced and information transmission accuracy is guaranteed. The mainboard can send cell system information to an upper computer and the information can be displayed through the upper computer.

The invention provides a data transmission method and a data transmission system in IOT (Internet of Things), IOT equipment, a terminal and an IOT system. The data transmission method comprises the following steps: judging whether uplink data need to be transmitted and / or a receiving power of a reference signal of equipment with a base station function in a current cell is not greater than a preset receiving power and / or a signal strength is not greater than a preset signal strength; when the judgment result is Yes, transmitting a relay searching signaling to multiple terminals in the current cell; receiving a relay searching signaling feedback transmitted by at least one terminal; determining whether any terminal is taken as a relay terminal according to the relay searching signaling feedback transmitted by any terminal of the at least one terminal; after determining to take any terminal as the relay terminal, transmitting a relay application signaling to the relay terminal. Through the technical solution of the invention, the optimal relay terminal can be selected for the IOT equipment, so as to select an optimal relay path for the IOT equipment.

A method and apparatus for the calibration of current cells, whereby a current signal from each current cell may be generated by either a thermometer current cell, or a binary current cell. If generated by a binary current cell, then two or more replica binary current cells exist to form a group of binary current cells within two or more binary current cell sets. The current magnitude generated by each replica current cell of each binary current cell group is first calibrated to be substantially equal to each other. Next, the combined current generated by the replica current cell group is calibrated to be substantially equal to a magnitude of a temporary current signal, or a portion thereof. Subsequent less-significant binary current cell groups are similarly calibrated to the temporary current signal through the use of the previously calibrated, more-significant binary current cell groups.

The invention provides a method for balancing inter-cell load in an LTE mobile communication network. The invention reduces the range of seeking a terminal which meets load balancing switching by marking the terminal which meets the requirement of load balancing switching by utilizing a balancing event measurement report, thereby shortening the load balancing execution time; and in addition, the invention better realizes the inter-cell load balancing through periodic load balancing processing and two-step load balancing switching processing, prevents new load unbalancing generated by the load balancing process, enhances the load balancing convergence rate, effectively prevents the ping-pong effect, effectively reduces the network overhead because neighbour cells can report respective resource states only after a current cell is overload, enhances the utility ratio of wireless resources and reduces the dropped call rate.

Systems of and methods for providing cellular priority access and topological guidance information to cellular users are described, employing wireless ad hoc network and cellular logic. A centralized aspect of acquiring cell loading information and geographic coordinates is combine with a distributed scatternet forming aspect to enable guidance information to be computed and indicated to the user. The guidance information is reflective of cell loading and congestion status of neighboring cells, as well as the availability of alternative radio resources in the user's current cell or neighboring cells. The system may also be employed in redistributing cell traffic among cells to optimally balance cell loads.

The invention provides a cell handover method, cell handover equipment and a cell handover system for a monitor terminal. The cell handover method comprises the steps as follows: an idle monitor terminal in the current cell monitors a paging message transmitted from core network equipment via a source base station; the monitor terminal measures the current cell and an adjacent cell according to measurement configuration information contained in the paging message; when the results of cell measurement shows that measurement report is carried out, an RRC (Connection Reconfiguration) connection between the monitor terminal and the resource base station is established; based on the RRC connection, the monitor terminal submits a measurement report containing a mark of the adjacent cell determined as a target cell and another mark of a group determined as a target group for the core network equipment via the resource base station; and when the monitor terminal receives a handover instruction transmitted from the core network equipment according to the measurement report determining to carry out cell handover for the monitor terminal, the monitor terminal is switched to the target group of the target cell. According to the invention, the idle monitor terminal also can achieve cell handover.

The method for supporting continuous reception of enhanced broadcast service data comprising steps of: an MCE receiving an “MBMS Session Start Request” message from a core network; after the MCE receives the message, transmitting a response message to the core network; MCE transmitting an “MBMS Session Start Request” message to an ENB, the message including information of adjacent cells; and the ENB broadcasting the information of adjacent cells on a current cells. With the scheme of present invention, if a user wants to move to a common cell when he / she receives MBMS service in an SFN edge cell, he / she can enter the active mode and switch into the common cell so as to reduce MBMS data loss. When a UE moves from a cell with SC-PTM transmission mode into a cell with SC-PTM transmission mode, data loss can also be reduced.

A method supporting multifrequency point data-receiving in high speed downlink packet includes distributing frequency point posting used on downlink packet service in current cell and control channel set to UE by network side when user device UE is switched in, sending control information of HS-PDSCH downlink share channel and frequency point index to UE by network side when data is required to be sent to UE by network side, receiving and processing HS-PDSCH data from corresponding frequency point by UE according to received index and control information and relying information on corresponding uplink control channel by UE according to corresponding relation.

A phase-lock loop (PLL) has an oscillator comprising a plurality of operating curves. A method for implementing a multi-transfer curve in a phase lock loop. By means of a finite state machine cooperating with a current cell, the unwanted loop gain is effectively reduced to produce a wide-ranging operating curve.

The application discloses a method for performing interference coordination between adjacent cells supporting dynamic TDD uplink and downlink configuration by a first evolved Node B (eNB). The method includes that: receiving, downlink interference degree information from a second eNB, wherein the downlink interference degree information is used for indicating a degree that uplink transmission of the second eNB is interfered by downlink transmission in a conflict subframe; and determining, according to the downlink interference degree information, whether to adjust downlink transmit power in the conflict subframe, if the downlink transmit power in the conflict subframe is to be adjusted, transmitting a CSI report configuration to UE of current cell, and configuring the UE of current cell to report a set of CSI respectively for the conflict subframe and a non-conflict subframe. By the solution of the present application, serious uplink and downlink interference between the adjacent cells can be avoided when the adjacent cells use different TDD uplink and downlink configurations.

The invention relates to a radio telecommunication system comprising means (508) for determining a bit rate increase in a cell on the basis of capacity requests, means (508) for estimating the increase of transmission power caused by the capacity increase, means (508, 518) for determining the cell power on the basis of the current cell power and the estimated power increase, means (508, 518) for estimating the increase of the transmission power needed in the neighbouring cells caused by the capacity growth in the current cell, means (508) for limiting the resource allocation in the cell requesting capacity.

A method and apparatus for controlling measuring the frequency of a new cell within a forbidden registration area when a User Equipment (UE) enters into the new cell in a mobile communication system are provided. If the UE recognizes the new registration area as forbidden, the UE does not measure the frequency of the current cell for a predetermined reference time, and searches for a suitable cell for a normal service by measuring other frequencies. If no suitable cell in the other frequencies is found, the UE removes a measuring limitation and searches for an acceptable cell for a limited service by measuring frequencies including frequency of the current cell.

A wide gain range current digital-to-analog converter (DAC) is presented that includes a unit current cell having a current source module biased by a current source voltage bias, a differential switch module, a main cascode module biased by a first bias voltage and an attenuation cascode module biased by a second bias voltage, configured such that a particular current gain range is obtained at the main cascode module output when a unit current cell current is at or above a current threshold. The output current at the attenuation cascode module output can be input into a current attenuator when the unit current cell current is below the current threshold to obtain additional current gain range. The current attenuator can include a plurality of attenuator cells that can be programmed to a desired level of current gain in linear decibels or linear step intervals. Smaller step sizes can be obtained by programming a current source within the step intervals.

The invention discloses a downlink interference coordination method and a base station. In the embodiment of the invention, the interference among cells is minimized and the interference coordination between the cells is realized by the following steps: identifying a high power user in a current cell; acquiring a high power frequency band used by the high power user in the cell neighboring to the current cell; and setting the high power frequency band for the high power user in the current cell, wherein, the high power frequency band set for the high power user in the current cell is different from the high power frequency band used by the high power user in the neighbor cell. Compared with the prior art in which the users are differentiated according to geographic positions of the users, the method is more reasonable due to differentiation of the users according to the power, and the method helps realize allocation of the used frequency bands of the high power users, reduce the interference among the cells and improve the communication quality by the coordination among the cells.