156results about How to "Improve communication system performance" patented technology

A method for adjusting a beam pattern in a beam pattern adjusting apparatus in a communication system supporting a Beam Division Multiple Access (BDMA) scheme is provided. The method includes determining whether a Voltage Standing Wave Ratio (VSWR) value for each antenna included in an antenna array included in the beam pattern adjusting apparatus is greater than or equal to a threshold VSWR value, if it is determined that an antenna of the antenna array has a VSWR value that is greater than or equal to the threshold VSWR, detecting whether each of the antenna elements is operable, and if it is determined that at least one of the antennas is inoperable, adjusting a beam pattern of at least one of the antennas that is operable.

A method of assigning transmission data rate in a multi-channel communication system based upon a comparison between projected transmitter power output for transmission at a selected data rate, and the maximum transmitter power capability. Relative power requirements for high and low processing gain channels are stored in a LUT in memory, for a variety of data transmission rates. By accessing the LUT, the relative power required for transmission over a low processing gain channel at a selected data rate can be determined. This power is then added to the current output power required by active high processing gain channels to determine the projected output power required once the low processing gain, or data, channel is brought online at the selected data rate. Data rate is increased or decreased until the projected output power is within a pre-selected transmitter output power tolerance, then that data rate is proposed to the receiver.

A communication network is optimized using modal antenna techniques, wherein a plurality of communication nodes are synchronized with each other along with mobile and fixed wireless communication devices which comprise the user base. With one or more of the communication nodes and wireless communication devices including at least one respective modal antenna, the network is adapted for dynamic optimization of communication links amongst the wireless users. Node to user throughput, node to node throughput, as well as interference characteristics among the nodes and wireless users are each optimized as a network system to increase communication system network capacity and reliability. The multiple radiation patterns provided by the modal antennas provide a parametric for network-level synchronization to improve communication system performance.

A beam management method, performed by a terminal in a communication system, includes receiving a control message including at least one parameter used for beam management from a first base station; performing a monitoring operation on a first beam configured between the first base station and the terminal based on the at least one parameter; detecting a beam problem in the first beam based on the monitoring operation; and in response to determination that the beam problem is detected in the first beam, performing a recovery operation on the first beam.

A method for space-time-frequency coding pieces of data includes receiving a stream of a plurality of pieces of data in a multi-antenna transmission system, where the data may comprise a stream of orthogonal frequency division multiple access (OFDMA) symbols, orthogonal frequency division multiplexed (OFDM) symbols or the like. The pieces of data are then coded across space, time and frequency dimensions based upon a plurality of space-time-frequency (STF) codes. The pieces of data are coded such that one or more STF codes in the frequency dimension differ from one or more other STF codes in the frequency dimension. In this regard, the frequency dimension can include a plurality of frequency bins such that the pieces of data can be coded in a manner whereby the plurality of STF codes sequentially circulates through sets of at least one frequency bin in the frequency domain.

A method for communicating in a wireless communications system includes receiving an indicator indicating a utilization of network resources for carrying an acknowledgement information, and determining whether the station is permitted to transmit a packet. The method includes when the station is permitted to transmit the packet, determining a first location of a first network resource in accordance with the indicator, and transmitting the packet at the first location of the first network resource.

The invention relates to a method for transmitting a plurality of data packets to a receiver in a data communication system. The method comprises the steps of transmitting one or more data packets from a list of data packets to be transmitted (300); determining whether an acknowledgment is received for each transmitted data packet (301), and further comprises the following steps executed when it is determined at the determining step that an acknowledgement has not been received for at least one data packet, referred to as an unacknowledged data packet: selecting one or more additional data packets from the list of data packets to be transmitted (302); generating one or more parity packets by encoding a block of data containing a combination of the selected one or more additional data packets and at least one unacknowledged data packet using a forward error correction scheme (304); and transmitting at least one of the generated parity packets (305).The invention also relates to software applications for transmitting a plurality of data packets and for receiving them. Furthermore, the invention relates to a transmitting device and a receiving device implementing respectively the software application for transmitting the plurality of data packets and the software application for receiving those data packets, and to a memory medium for storing the code of such software applications.

A cellular communication system supports both soft handover communication channels and non-soft handover communication channels from the same user equipment (101). A serving base station (103) comprises a receive front end (201) for receiving transmissions from the user equipment (101). A first indication processor (203) receives a first link quality indication associated with a first signal of a soft handover communication channel from the user equipment (101). A second indication processor 205 receives a second link quality indication associated with a second signal of a non-soft handover channel from the user equipment (101). A characteristic processor (207) then determines the radio link characteristic in response to the first and second link quality indications. For example a power control command for a soft handover signal and a channel quality indicator for a non-soft handover signal may be compared and a radio link quality may be determined in response to the comparison.

A data transmission method and central controller for a distributed antenna system and a distributed antenna system. The system includes a central controller and multiple wireless transceiver units. The method includes that wireless transceiver units measure the power of the pilot reference signals received from user terminals and forward this power rate to a central controller; the central controller selects a set of wireless transceiver units for transmitting data to the terminal according to the pilot reference signal power rates of the terminals forwarded by the multiple wireless transceiver units; the central controller performs data processing according to said set of wireless transceiver units; the central controller distributes the processed data to the wireless transceiver units in said set of wireless transceiver units, and the wireless transceiver units in said set perform the downlink data transmission.

A method and a device for controlling an access on the basis of a common resource in a communication system. An operating method of a terminal in a communication system includes: receiving configuration information of a common resource from a first base station among the plurality of base stations; receiving common information from the first base station through the common resource indicated by the configuration information; and performing a random access procedure with a second base station among the plurality of base stations by using the common information. Therefore, the performance of the communication system can be improved.

A method for mobility management, an apparatus and a User Equipment (UE) are disclosed. The method includes: obtaining cell set information sent by a cell set in an access network; selecting a target cell set to which a UE may hand over according to the cell set information, and sending information about selection of the target cell set to the target cell set; and receiving information about at least one target cell decided by the target cell set, and providing the information about the target cell to the UE for handover. The method for mobility management between cell sets simplifies mobility management in multi-cell communication and improves performance of the communication system.

A communication system comprises a configuration manager which includes an optimizer for performing a Radio Access Network (RAN) optimization process. An optimization characteristic for the RAN optimization process and operational data for a plurality of remote terminals is determined, and based on this information a grouping processor determines a plurality of groups of remote terminals. A policy processor determines an operational policy for each of the groups in response to the optimization characteristic and the operational data and a policy distributor transmits the operational policy of each group to at least the remote terminals in the group. Each remote terminal then continues to operate in accordance with the operational policy of the group to which the remote terminal belongs. The invention may typically allow improved performance and specifically may allow operation to be adapted to the specific optimization processes being performed. The invention is suitable for a heterogeneous communication system.