Abstract: A transmitting device includes a setting unit dividing a transmitting frequency bandwidth into frequency blocks each narrower than a receivable bandwidth of a receiving device, and setting a transmission rate in each of the frequency blocks so as to increase or decrease stepwise, and a receiving device receiving signal with the transmission rate being thus set includes a receiving unit receiving the signal in any one of a plurality of receiving segments falling within the transmitting frequency bandwidth, each having the receivable bandwidth and provided so that at least one of the frequency blocks included in each receiving segment is also included in at least one of other receiving segments.

Abstract: A method and arrangement in a node for allocating transmission resources is presented. The present method and arrangement for scheduling, allocates frequency resources based on the received signal power of user equipment. Thus in particular uplink power can be better utilized. According to the present method and arrangement the resource blocks are distributed so that the SINR of all scheduled user equipments reach a selected SINR target. The selection of SINR targets may be static or dynamic. Further, according to the present method and arrangement, optimization of system and user performance may be combined.

Abstract: An apparatus and method of a gateway selecting transmission channels of a cluster of a wireless mesh network is disclosed. The cluster includes the gateway and a plurality of access nodes. The method includes the gateway cycling through a plurality of available transmission channels, evaluating channel each of the available transmission channels, and selecting a cluster transmission channel based on the channel evaluations. An apparatus and method of a node within a wireless mesh network selecting a transmission channel is also disclosed. The method includes the node cycling through a plurality of available transmission channels, measuring a persistence of successfully received routing packets from upstream devices at each of the available transmission channels, evaluating noise of each of the available transmission channels, and selecting one of the available transmission channels based on the persistence of successfully received routing packets and the noise.

Abstract: A wireless communication method and system using virtual MIMO (“V-MIMO”) are provided. Post processing signal to interference and noise ratios (“SINR”) for a plurality of signals corresponding to a plurality of mobile terminals arranged as a V-MIMO group are estimated. The one of the plurality of mobile terminals having the highest post processing SINR is selected. Wireless communication for the selected mobile terminal is scheduled. The signal corresponding to the selected mobile terminal is cancelled. Post processing signal to interference and noise ratios (“SINR”) for the signals corresponding to the remaining mobile terminals is re-estimated. The one of the remaining mobile terminals having the highest post processing SINR is selected. Wireless communication for the selected remaining mobile terminal is scheduled.

Abstract: A mobile communications terminal divides a plurality of multipath signals associated with radio signals transmitted from a plurality of base stations using an S-CCPCH into groups by base station, i.e., by transmit source, maximum-ratio-combines a plurality of multipath signals associated with each same base station which is a transmit source into a composite signal, decodes the composite signal, and selects a composite signal having a good decoded result from among decoded composite signals.

Abstract: Certain aspects of the present disclosure relate to a technique for managing contention-based uplink data transmissions. According to certain aspects, a base station may allocate a common contention-based resource to a plurality of user equipment (UEs). The plurality of UEs may utilize the contention-based resource to transmit uplink data without prior scheduling, which may result in transmission collisions. Certain aspects of the present disclosure provide a mechanism for determining which UE sent an uplink transmissions based on one or more transmission parameter signaled to the UEs.

Abstract: Aspects of a double search user group selection scheme with range reduction for FDD multiuser MIMO downlink transmission with finite-rate channel state information feedback are provided. The method may comprise maximizing system capacity using feedback information for a plurality of signals in a frequency division duplex system to reduce a search range within which a group of signals having maximum channel gain are located. The feedback information may comprise quantized gain for the signals. Quantized channel direction for the signals within the reduced search range may be requested and received by the transmitter. One or two signals from the reduced search range that maximizes system capacity may be selected. The receivers associated with these signals may then be selected as the user group.

Abstract: An apparatus and method for scheduling users in a mobile communication system are provided, in which a Base Station (BS) calculates scheduling utility values of each Mobile Station (MS) for a plurality of cases of interference from neighbor BSs, forms a candidate MS list by selecting a predetermined number of MSs in a descending order of utility value for each of the cases of interference from the neighbor BSs, transmits the candidate MS list to the neighbor BSs, receives candidate MS lists from the neighbor BSs, calculates the channel transmission rates of candidate MSs included in the candidate MS lists, and selects an MS to be serviced according to the channel transmission rates.

Abstract: A wireless audio delivery system and method are disclosed for distributing an audio signal to a plurality of headsets through short range wireless communication channels. An audio delivery method for a short range wireless communication network including a master device and a plurality of slave devices includes selecting, at the master device, one of the slave devices as a primary slave device, assigning a master control to the primary slave device, establishing a communication channel between the master and the slave devices and delivering audio data to the slave devices through the communication channel.

Abstract: A radio device is located far from other radio devices in a radio network system. The radio device determines a threshold WIth for detecting a strength equal to or more than the minimum strength of radio waves transmitted/received in a stable radio wave environment based on a plurality of reception signal strengths of Hello packets received from radio devices adjacent to the radio device. Then, if the number of radio devices adjacent to the radio device when the threshold WIth is introduced is less than a standard value (such as five), the radio device stores the adjacent radio devices in the neighbor list without introducing the threshold WIth, and then, maintains in the routing table the routing information of routes passing through the adjacent radio devices based on the neighbor list.

Abstract: Systems and methods for transmitting multimedia data are disclosed which, in some embodiments, may comprise polling a first wireless device to obtain at least a first statistics of consumption of content previously transmitted to the first wireless device and polling a second wireless device to obtain at least a second statistics of consumption of content previously transmitted to the second wireless device. The method also comprises determining the resources available to transmit a first content and a second content to the first and second wireless device, wherein the first content to be transmitted to the first wireless device is selected based on the first statistics of consumption, and wherein the second content to be transmitted to the second wireless device is selected based on the second statistics of consumption.

Abstract: The present invention relates to a scheduler selector and a method for improving network quality by controlling intercellular interference of a multi-cellular mobile radio communication network. The radio communication traffic is controlled by a user traffic scheduler principle. The network quality is improved by selecting another scheduling principle among a number of pre-defined and selectable scheduling principles than the scheduling principle working for the moment in a cell in said network. Said selection being initiated as a result of an intracellular Quality data processing wherein the network quality is determined to be possible to improve.

Abstract: Provided are a channel management method and a channel selection method for a wireless node in a wireless ad-hoc network. The channel management method includes the steps of: (a) when a current mode is a first mode, performing channel selection using a method for evenly distributing a channel within an interference range; and (b) when the current mode is a second mode, performing channel selection based on a channel switching probability. According to the method, by preventing a channel change from being continuously repeated in a wireless ad-hoc network using multi-channel multi-interface, it is possible to prevent data transmission delay and network performance deterioration.

Abstract: A method for performing a scheduling algorithm with minimum resource scheduling in a mobile communication system, comprising the steps of scheduling (10) allocation units for a user or service in a scheduling frame, checking whether (20) the allocation units scheduled for a user or service in a particular scheduling frame meet a resource constraint, and releasing the allocation units (40) scheduled for a user or service for that particular scheduling frame for based on the result of the checking step for resource constraint. The invention also concerns a scheduler in a mobile communication system, a base station and mobile terminal comprising such a scheduler and a mobile communication system.

Abstract: A plurality of mobile sensor devices each periodically measure a property of their environment, and determine the rate of change in that property. Neighboring devices also co-operate to determine the values of the property being measured by each other. If the property is invariant both over time and over a number of neighboring devices, their periodicity of measurement-taking is reduced to conserve power for more significant measurement events. The devices may co-operate to relay their measurements to a data collection point. Each device determines the level of data traffic being carried by one or more neighboring devices, identifies the device that is carrying the least traffic, and puts itself under the control of that device.

Abstract: User grouping is employed to tradeoff the COMP forward link capacity and required reverse link feedback, which makes the design of COMP practical and flexible. A channel element, such as the large scale fading, is measured for each distributed transmitter and UE pair based on reference signals, and the network receives this information as feedback in the reverse link. The COMP determines a maximum cross interference level ?req that is affordable, based on the available reverse link capacity for feedback. If this maximum cross interference level ?req is exceeded, geographically separate UEs are divided into as few groups as possible, with UEs within each group separated, and the groups are allocated different time/frequency resource blocks. The grouping is done with the constraint that the cross interference does not exceed ?req.

Abstract: A method of allocating a plurality of communication channels of a network, for a plurality of network stations of the network. The method comprises generating a common transmission message for the plurality of network stations and transmitting the generated transmission message to the plurality of network stations. The message comprises channel allocation information allowing an allocation of channels by the network stations, the information relating to each of the plurality of network stations. A network managing station for communicating with the plurality of network stations, there being a plurality of communication channels available for use by the plurality of network stations. The network managing station comprises a processor, arranged to generate the common transmission message for the plurality of network stations and a transmitter arranged to transmit the generated transmission to said plurality of networks.

Abstract: A communication network system has a host network and low-ranking networks connected with the host network through respective interchange terminals. Terminals containing the interchange terminals in the host network perform communication based on FlexRay. FlexRay sets a static segment and a dynamic segment every communication period. Communication zones are fixedly allocated to the respective terminals in each static segment. Communication zones are changeably allocated to the respective terminals in each dynamic segment. Terminals of each low-ranking network perform communication based on LIN or CAN protocol. The interchange terminals connect a transmission line of the host network with transmission lines of the low-ranking networks during the transmission period of each dynamic segment, so that each terminal of each low-ranking network can perform communication based on LIN or CAN protocol with the terminals of the other low-ranking networks through the high-ranking network without any protocol conversion.

Abstract: Systems and techniques are disclosed relating to wireless communications. The systems and techniques involve wireless communications wherein a module or communications device is configured to select first and second terminal pairs, the first terminal pair having a first transmitting terminal and a first receiving terminal, and the second terminal pair having a second transmitting terminal and a second receiving terminal, schedule a first signal transmission from the first transmitting terminal to an intermediate terminal, the first signal transmission being destined for the first receiving terminal, schedule, simultaneously with the first signal transmission, a second signal transmission from the second transmitting terminal to the second receiving terminal, and schedule a power level for each of the first and second signal transmissions that satisfies a target quality parameter for each of the intermediate terminal and the second receiving terminal.

Abstract: For uplink cooperation of a serving access node (100-1) one or more supporting access nodes (100-2) are selected. The selection is based on a characteristic of a link between a terminal (200) served by the serving access node (100-1) and the supporting access node (100-2), or is based on a characteristic of a link between a further terminal (200?) served by the supporting access node (100-2) and the serving access node (100-1). The characteristics of the links may comprise a signal quality, e.g. a path gain, a signal strength, or a latency. The characteristics of the links may also comprise scheduling information, e.g. time resources and/or frequency resources used on the link.

Abstract: A mobile communication method is disclosed, where the mobile communication method includes the steps of determining, at a mobile station, a first cell with the largest interference amount among a plurality of cells in accordance with reception quality of a reference signal in the plurality of cells, when radio links are established between the mobile station and the plurality of cells, transmitting, from the mobile station to the plurality of cells, identification information of the first cell, and scheduling, at a radio base station which manages each of the plurality of cells, to transmit a data signal addressed to the mobile station via a resource that is unusable by the first cell.

Abstract: A method and system for allocating a channel are provided in a communication system including a plurality of Mobile Stations (MSs) and Base Stations (BSs) for providing a communication service to the plurality of MSs. A BS transmits an average Channel Quality Information (CQI) request to MSs. The MSs measure CQI with respect to their channels in response to the request from the BS, compute average CQI from the measured CQI, and transmit the average CQI to the BS. The BS selects a predefined number of MSs according to the average CQI received from the MSs and sets an MS group. The BS transmits a CQI request to the MS group. The MSs of the MS group transmit the CQI to the BS. The BS receives the CQI from the MS group and allocates a channel according to the CQI.

Abstract: A communication device selects an optimal modulation method even when a propagation path condition is changed. In the communication device, a second communication device has a transmission path condition estimation unit for estimating the propagation path condition change speed and a communication quality estimation unit for modifying the communication quality estimation method according to the speed of the change of the propagation path condition and for estimating the communication quality according to the modified estimation method. The information on the estimated propagation path condition and the information on the communication quality are transmitted from a transmission processing unit, and an adaptive modulation control unit of the first communication device sets a condition for selecting the modulation method and decides the modulation method according to the set condition and the information on the communication quality.

Abstract: A method, apparatus, and computer program for estimating a rank, i.e. the number of uncorrelated spatial channels, of a radio channel are provided. The rank estimation is carried out by examining mutual proportions of a first eigenvalue and a second eigenvalue of a two-by-two channel matrix representation with a test function including elements of a solution of roots of a quadratic characteristic equation of the two-by-two channel matrix representation, wherein the test function comprises a discriminant of the solution of the roots of the quadratic characteristic equation without a square root operation.

Abstract: A station associates with an access point in a wireless local area network conforming to, e.g., an IEEE 802.11 standard. The station measures the signal-to-noise ratio (SNR) for the downlink from each of the access points sending either a beacon or a probe response, and forms a first list of access points in decreasing order of received downlink SNR. The station transmits a link test request to each access point to query the access point for the SNR of the link test request received at the corresponding access point. Access points respond to the link test request with corresponding link test responses containing the corresponding SNR. The station i) forms a second list of access points in decreasing order of received uplink SNR and ii) compares the first and second lists to determine which access point to associate with based on overall quality of the uplink and downlink channels.

Abstract: A communication device using user cooperation is provided with a channel information reception unit to receive channel information from a plurality of member terminals within the same group, the channel information being associated with a radio channel formed between the plurality of member terminals and a base station; a member terminal selection unit to select at least one active member terminal from among the plurality of member terminals based on the channel information; and a selection information transmission unit to transmit selection information to the base station, the selection information being associated with a radio channel formed between the at least one active member terminal and the base station.

Abstract: A radio base station for performing communication through three or more frequency bands based on orthogonal frequency division multiplexing includes a transmission unit configured to transmit a first channel through at least one of the three or more frequency bands and to transmit a second channel having smaller power than the first channel through at least another one of the three or more frequency bands, the first channel and the second channel being transmittable concurrently in time, a reception condition detecting unit configured to detect a reception condition of one or more mobile stations residing within a local cell, and a scheduling unit configured to select one of the first channel and the second channel, a modulation scheme, and a transmission power to be used for at least a downlink to one of the mobile stations based on the detected reception condition.

Abstract: An apparatus and process for allocating carriers in a multi-carrier system is described. In one embodiment, the process comprises determining a location (E, D, C, B, A; FIG. 6) of a subscriber (520) with respect to a base station (510), selecting carriers from a band of carriers to allocate to the subscriber (520) according to the location of the subscriber with respect to the base station (510), and allocating selected carriers to the subscriber (520).

Abstract: A wireless network device including: a first RF transceiver module configured to (i) for a predetermined number of times, transmit a data frame to a second RF transceiver module, and (ii) for each data frame transmitted to the second RF transceiver module, receive an acknowledgement frame from the second RF transceiver module after a respective delay period; a timing module configured to generate a timer value corresponding to an accumulated delay period, wherein the accumulated delay period corresponds to each of the respective delay periods; and a control module configured to (i) determine the predetermined number of times that the first RF transceiver transmitted the data frame to the second RF transceiver based on a resolution of the timing module, and, (ii) determine an actual delay period based on (a) the timer value and (b) the predetermined number of times.

Abstract: A method and system for providing a network protocol for utility services are disclosed are disclosed. In one embodiment, a computer-implemented method comprises discovering a utility network, wherein a constant powered meter sends network discovery messages to find the utility network. Neighboring meters are discovered, wherein the constant powered meter sends hello messages periodically. The constant powered meter is registered with the utility network. Further, the battery powered meter finds and associates itself with a constant powered meter. The constant powered meter also registers its associate battery powered meter with the utility network. The constant powered meter sends a node registration message to the gateway of the utility network. The constant powered meter can sense outage problems with the gateway and the neighbors of its network, and search and migrate to an alternate network.

Abstract: Methods and systems are provided for providing machine health information. In one embodiment, a machine may include a storage device that is configured to store collected machine health data. The storage device has a module that is configured to determine a data characteristic and a communication characteristic. The storage device is further configured to determine, based on the data characteristic and the communication characteristic, whether to transmit a set of machine health data to an off-board system. Further, the storage device is coupled to a transmitter that is configured to transmit the set of machine health data to the off-board system.

Abstract: An uplink signal-to-interference ratio for each of multiple mobile radio terminal connections supported in a cell in a cellular communications system is estimated. A signal-to-interference ratio error is determined for selected ones of the estimated uplink signal-to-interference ratios. One or more signal-to-interference ratio errors are identified that exceed a signal-to-interference ratio error threshold. An instability indicator associated with the cell is determined based on the one or more identified signal-to-interference ratio errors. A load control decision and/or a decision for scheduling one or more uplink mobile radio transmissions in the cell may then be made based on the instability indicator, e.g., to prevent a transmission power rush in the uplink in the cell and/or to efficiently use available resources for uplink transmissions.

Abstract: In a wireless communication system using a reference channel used for error rate measurement and associated with a plurality of transport channels multiplexed on a coded composite transport channel (CCTrCH), a method is employed for reselection of the reference channel from favorable candidate transport channels. A channel is initially selected from the plurality of multiplexed channels as the reference channel. Channels are monitored based on quantitative data content criteria to determine whether an ON or OFF state exists. A different channel is selected from the plurality of multiplexed channels as the reselected RTrCH when a better candidate transport channel in the ON state becomes available, or when the monitored RTrCH reflects an OFF state.

Abstract: A wireless networking system uses mobile and fixed transceivers to achieve a network with changing topology. A routing process includes quality-of-service considerations in the network to allow for features such as file or other data transfer, streaming audio and video, digital telephone communications, etc. The routing process adapts to transceiver units entering, leaving, or moving within, the network. Auxiliary networks such as the Internet, campus or corporate intranets, home networks, etc., can be accessed through the wireless network. Features, designs and user interfaces for the units are described. Security and access control of media content and other data is presented.

Abstract: Embodiments of the present invention include methods and apparatuses for adjusting audio content when more multiple audio objects are directed toward a single audio output device. The amplitude, white noise content, and frequencies can be adjusted to enhance overall sound quality or make content of certain audio objects more intelligible. Audio objects are classified by a class category, by which they are can be assigned class specific processing. Audio objects classes can also have a rank. The rank of an audio objects class is used to give priority to or apply specific processing to audio objects sin the presence of other audio objects of different classes.

Abstract: An apparatus and a method for obtaining a service in a weak electric field in a mobile communication terminal are provided. In the method, whether one or more frequencies that meet reception signal strength of a certain threshold exist among all frequencies on which camp-on is possible is determined. When it is determined that the one or more frequencies that meet the reception signal strength of the certain threshold do not exist, camp-on is attempted for one or more frequencies that are expected to exist and have been set in advance.

Abstract: Disclosed are systems, methods and computer program products for traffic volume reporting during radio access network (RAN) connection setup. In one aspect, the RAN broadcasts an indicator that it accepts traffic volume measurements (TVM) from access terminals (ATs) and an associated TVM threshold. An AT measures its traffic volume before requesting a connection with the RAN. If the traffic volume is above the threshold, AT transmits to the RAN a connection request containing a TVM indicator that the measured traffic volume from the AT is above the threshold. If the traffic volume is below the threshold, AT transmits to the RAN a connection request containing a TVM indicator that the traffic volume is below the threshold.

Abstract: Mechanisms for efficient transmission of large amount of download data from a base station (210) to a user equipment (220) in a multi-carrier that minimizes power consumption on the user equipment are described. When multiple component carriers are to be used to transmit the download data, the base station (210) informs the user equipment (220). The base station (210) transmits on the anchor carriers without wait after informing the user equipment (220) and transmits on the non-anchor carriers after waiting a predetermined delay. The predetermined delay provides time to allow the user equipment (220) to activate the receiving resources and be ready to receive the download data over the non-anchor carriers. In this manner, the user equipment (220) can be in a power conservation mode and activate the receiver resources only when needed.

Abstract: The invention concerns a method for the rate regulation of radio link probing in a communication network comprising at least a receiver terminal and at least one transmitter terminal, characterized by the steps, at the level of the receiver terminal, of: determining the amount of data sent by each transmitter terminal to the receiver terminal through respective radio links, when a probing of a link is to be made, probing the link corresponding to the transmitter terminal having sent the greatest amount of data.

Abstract: The present invention relates to a method of transmitting channel quality data for channels in a wireless communication system, and to a corresponding receiver and transmitter. The method comprises determining a plurality of channel quality indicators for a corresponding plurality of frequency intervals, and transmitting information about channel quality indicators in the form of differentially encoded slope data.

Abstract: To control allocation of a portion of a shared channel to use for control information, a base station determines an amount of resource elements of the shared channel to use for the control information in place of traffic data. The base station sends, to a mobile station, an indication relating to an offset parameter, where the indication is provided to allow the mobile station to compute a value for the offset parameter such that the mobile station can determine the amount of the resource elements of the shared channel to allocate for the control information.

Abstract: A base station includes: an estimation section estimating transmission condition of each of frequency channels used for communication; a reception section receiving a data signal from each communication terminal through any of the frequency channels; a measurement section measuring received signal power of the received data signal for each frequency channel; a determination section determining, for each frequency channel, whether the received data signal is demodulated errorlessly; and a control section assigning frequency channels estimated as being in good transmission condition by the estimation section, to communication terminals the data signals of which are determined as not being errorlessly demodulated by the determination section, such that a frequency channel in a better transmission condition is assigned preferentially to a communication terminal having larger received signal power detected by the detection section, and transmitting retransmission request signals requesting the communication termin

Abstract: Spectrum monitoring measurements are made by microcell base stations in a layered cellular network, while not serving calls or engaged in processing calls. The microcell base station transmits a first control message from to a microcell mobile station, to increase the duration for the mobile station to reside in the camping state on a control channel of the microcell base station. The microcell base station transmits a second control message from the microcell base station to the microcell mobile station, to increase the duration for the mobile station to reside in a call origination state while attempting to access a control channel of the microcell base station. Then, to perform the spectrum monitoring measurement, the base station's transmitter is turned off, the receiver is retuned to the frequency to be monitored, a signal strength measurement taken on that frequency, the receiver is retuned back to its assigned frequency, and the transmitter is turned back on, all in a short time interval.

Abstract: The primitives between an upper management layer and the MAC layer within a mobile station and a base station are defined in order to specify and clarify the operations within the protocol stack layers in a broadband wireless access system to allow a mobile station to execute handover. Media Independent Handover (MIH) procedures can be achieved because the NCMS and MIH layer can communicate through use of these primitives.

Abstract: Certain aspects of a method and system for processing signals in a communication system may include maximizing system capacity for a time division duplex (TDD) multiple-input multiple-output (MIMO) system, based on reducing a search range within which to find a group of signals having maximum channel gain. At least one of: a first signal for a first user and a second signal for a second user may be selected, which are both within the reduced search range, and which provides a maximum system capacity. The first signal for the first user may be selected from the reduced search range corresponding to a channel gain that is greater than a channel gain corresponding to a remaining portion of the reduced search range. The reduced search range may be generated by sorting a plurality of signals based on a channel gain corresponding to each of the plurality of signals.

Abstract: Certain aspects of a method and system for processing signals in a communication system may include maximizing system capacity for a time division duplex (TDD) multiuser multiple-input multiple-output (MIMO) downlink system, based on a single signal for a single user within a reduced search range or the single signal for the single user and at least one other signal for one other user within a remaining portion of the reduced search range. The reduced search range may be generated by sorting a plurality of signals based on a channel gain corresponding to each of the plurality of signals. The single signal for the single user may be selected from the reduced search range corresponding to a channel gain that is greater than a channel gain corresponding to a remaining portion of the reduced search range.

Abstract: A method for communication is disclosed and may include performing, using one or more processors and/or circuits, selecting, from a plurality of signal receiving users in a multiuser communication system, a first signal receiving user having a channel gain that is greater than a channel gain of each corresponding signal receiving user of a remaining portion of the plurality of signal receiving users. A second signal receiving user may be selected from the remaining portion of the plurality of signal receiving users, based on a feedback information comprising orthogonality of a channel direction of the second signal receiving user with respect to a channel direction of the first user. The feedback information may include a channel gain of the second signal receiving user. The communication system may include a frequency division duplex (FDD) multiuser communication system.

Abstract: Communicating over a network of communication stations includes monitoring for reception of an electromagnetic wave that has a power above a threshold and a frequency in a predetermined frequency interval, and selecting carrier frequencies for modulating information onto signals transmitted over the network. The carrier frequencies are selected based at least in part on whether an electromagnetic wave having a power above the threshold and a frequency in the frequency interval has been received in a predetermined time interval, and based at least in part on a demand by one or more stations in the network for capacity for communicating over the network.

Abstract: Methods and apparatus, including computer program products, implementing and using techniques for determining route alternatives from a starting point to an ending destination for a vehicle, based at least in part on radio signal strength and availability. An input defining a starting point and an ending destination is received. A user input of a radio station preference is received. One or more route alternatives between the starting point and the ending destination are determined based on global positioning system data, the received radio station preference, and information on radio signal strength and availability.

Abstract: A method and system for a double search algorithm of user group selection for multiuser MIMO downlink transmission are provided. The use of optimal brute-force user group selection may require high computational expense. A first search operation may be based on a first user having a channel gain greater than that of other users, while a second search operation may be based on a second user having a channel gain greater than that of the remaining users. A maximized system capacity may be determined based on the maximized system capacities determined in the first and second search loop. A receiver pair associated with the maximized system capacity may be selected as the user group. The double search algorithm may reduce the computational complexity while achieving performances that may exceed the TDMA scheme and be similar to that of systems with ideal CSI at the transmitter.