Abstract: A frequency generation unit (FGU) 100 includes a plurality of selectable voltage controlled oscillators (110) whose output frequencies are chosen in relationship with a predetermined intermediate frequency (IF) and frequency divider value (M) to provide multi-band frequency generation capability in a single communication device. A programmable reference divider (104), phase detector (174) and programmable charge pump (106) take an incoming reference frequency (120) and generate a charge pump output (124) to optimize the in-band phase noise in the FGU 100. A fixed loop filter (108) filters the charge pump output (124) to generate a control voltage (126) for the selectable VCOs (110). The desired frequency band is selected and enabled using control logic (128).

Abstract: A transmitter (200) includes a plurality of amplifier “n” stages (202, 204, 206) providing predetermined gain stages and a plurality of filters (208, 210). Each filter (208, 210) is distributed between each gain stage (202, 204) (204, 206) so as to reject far out noise in accordance with the gain stage preceding that filter.

Abstract: A subscriber (100) transmits data on a first data channel. While transmitting, the subscriber tracks the number of collisions it experiences on the first data channel (206). When the number of collisions reaches a threshold value, the subscriber transmits a reassignment request to move to a new data channel. Upon receipt of the reassignment request, a central processor (102) assumes that the first data channel is loaded. The central processor will then compare an incoming data rate to a value to determine if the first data channel is actually loaded, wherein the incoming data rate is measured by the central processor at the time the subscriber requested reassignment.

Abstract: A mounting assembly (300) for coupling to a circuit board (180) is provided. The mounting assembly can include a radio frequency (RF) connector (330) for receiving an antenna, a flexible cable (340) connected to the RF connector, and an alignment wall (350) supporting the flexible cable and providing a guide channel (343) to flexibly mount the RF connector to a mechanical housing (190). The alignment wall can limit the movement of the RF connector to within a tolerance to alleviate a solder stress on the circuit board.

Abstract: A method of altitude correction of an inertial navigational device, the method comprising the steps of: receiving (205) a relative altitude of the inertial navigational device; obtaining (210) a rate of change of the relative altitude of a reference device; and calculating (215) an absolute altitude of the inertial navigational device based on the relative altitude of the inertial navigational device and the rate of change of the relative altitude of the reference device. The invention also provides for a device (505) such as base station, computer or a laptop to enable altitude correction of an inertial navigational device.

Abstract: A method and apparatus for reducing in-band spurs in a fractional-N synthesizer (100) includes generating a compensated current signal by a charge pump (108) coupled to a phase detector (106). The compensated current signal includes in-band spurs having frequencies within a frequency bandwidth associated with a loop filter (110). The method then includes selectively dithering the compensated current signal with a sufficient dither level to spread the frequencies of in-band spurs beyond the frequency bandwidth associated with the loop filter (110). The dithered compensated current signal is then passed through the loop filter (110) for filtering the in-band spurs having frequencies beyond the frequency bandwidth. The method then includes generating a voltage controlled oscillator (VCO) signal with reduced in-band spurs proportional to the filtered compensated current signal.

Abstract: A system (100) and method (300) for mesh/ad hoc participation is provided. The method can include providing (310) an incentive to a user operating a device in an ad hoc network and determining (320) network resources associated with providing the incentive. The method can establish a credit system for devices within the ad hoc network, evaluate a supply and demand for the network resources, and allocate credits to the devices for forwarding packets in the ad hoc network. The method can determine a delivery capacity for the devices and negotiate an optimal packet route through the devices in the ad hoc network based on the supply and demand.

Abstract: A method and an apparatus (300) for generating corrected quadrature phase signal pairs in a communication device are provided. The apparatus (300) includes a quadrature phase generator (310), programmable delay elements (320, 330) and a control circuit (360). The programmable delay elements (320, 330) receive a quadrature phase signal pair (signals I 312 and Q 314) from the quadrature phase generator (310). The control circuit (360) generates a control signal (362) based on outputs (325, 335) of the programmable delay elements (320, 330). The control signal (362) configures the programmable delay elements (320, 330). The programmable delay elements (320, 330) are configured to adjust delay between the signals I (312) and Q (314). The programmable delay elements (320, 330) are also used to adjust duty cycle for the quadrature phase signal pair to provide the corrected quadrature phase signal pair.

Abstract: In a cognitive radio, a method of establishing an operational policy for use in a Peer-to-Peer (P2P) group, wherein the policy can be described by layers of policy parameters with progressively higher layers having a progressively increasing number of parameters, involves determining that a policy change is to be made from a current policy; requesting policy information from at least one P2P group member; receiving a policy description from the at least one P2P group member; and implementing a change in the lowest layer policy parameter to establish a new operational policy.

Abstract: An apparatus (100) is provided for powering an in-battery electronic application module (118) without the use of an external on/off switch. A battery pack (102) is electrically coupled to a radio (104) via three interface contacts: power (108), ground (112) and single-wire serial data port (110). Circuitry is included within the battery pack (102) to sense and monitor data activity on the single-wire serial data port (110) generated as the radio (104) is turned on. Based on the level and timing (200) of the data activity present on the single-wire serial port (110), the electronic application module (118) can automatically be turned on (208), remain on (210) and turned off (212).

Abstract: An apparatus and method are provided for minimizing noise on a power supply line (105) of a mobile radio, such as generated in a vehicular environment. An adaptive power supply conditioner (100) detects unwanted noise on the vehicle's power supply line (105) and via the use of an adaptive noise canceller (140), generates a cancellation signal (145) having the same amplitude but opposite phase of the input signal's detected noise. The cancellation signal (145) is fed forward and combined with the power supply line (105) in order to minimize unwanted noise on the supply line (105) leading to the mobile radio. The conditioner's output (165) is checked for further error and is fed back to the adaptive noise filter (140) for further filtering and the generation of an updated cancellation signal based on current noise conditions.

Abstract: A Building Database Manipulator to build databases for a variety of physical environments including definitions of buildings, terrain and other site parameters, by scanning in or rapidly editing data. Raster scans may be entered or object files in various formats may be used as input. Detailed information is stored in the drawing database about the object's location, radio frequency attenuation, color, and other physical information such as electrical characteristics and intersections of the object with the ground, floors, ceilings, and other objects when objects are formatted in a drawing. The formatting process is strictly two-dimensional in nature, but the resulting drawing is a true three-dimensional environment. The user sees the three-dimensional building structure by altering the views. The resulting database may be used in a variety of modeling applications, but is especially useful for engineering, planning and management tools for in-building or microcell wireless systems.

Abstract: A method and system for assigning priority to a talk group of a plurality of talk groups in a communication network (100) is provided. The method includes detecting (304) activity on a first talk group (108) via a Vehicular Repeater (VR) (106). The first talk group is associated with a lower priority than that of a second talk group (110). The method also comprises assigning (306) a higher priority to the first talk group and the lower priority to the second talk group, based on the step of detecting. Further, the method comprises dynamically re-assigning (308) the higher priority and the lower priority amongst the plurality of talk groups, based on detecting activity.

Abstract: A system (100) and method (200) for providing a multiple channel site for supporting talk group activity is provided. The method includes determining (202) an arrival time (141) of a plurality of Vehicular Repeater System (VRS) (101-103) to a vicinity (140), identifying (204) talk group activity among the plurality of PSUs (171-176) in the vicinity, and assigning VRSs to talk groups in order of arrival time and talk group activity. A master VRS maintains and updates (322) a list of recently active talk groups (TG), orders (324) the list by frequency of use of a talk group, forwards the list to slave VRSs and PSUs, and allocates (326) single channels in view of the list to the slave VRSs. PSUs in the vicinity can read the assignment list and update their communication channel based on a selected talk group in the list.

Abstract: An interconnect assembly for a clam style portable communication device (100) provides for a hermetically sealed device that prevents water intrusion. A flex (106) electrically interconnects a flip compartment (102) to a main radio compartment (104). First and second seals (112, 114) coupled to the ends (108, 110) of the flex (106) provide independent sealing of the flip compartment (102) from the main radio compartment (104). Thus, the flex (106) provides both electrical interconnect and independent mechanical sealing of the two compartments (102, 104).

Abstract: A dual input low noise amplifier (LNA) for multi-band frequency operation is disclosed. The dual input LNA (100) simultaneously operates in two amplifier configurations for the two inputs (101 and 103), of a first frequency band and a second frequency band, to produce a common output (113). Matching networks (102 and 104) receive and pass the inputs (101 and 103) to a transistor device (106). The transistor device is coupled to a series resonant circuit (108) at a first input node (107) to ground AC signal energy from a second input node (109) of the transistor device. The grounding causes the transistor device to simultaneously amplify and combine the signals at the first and the second input nodes to produce the common output of the first frequency band and the second frequency band at a common output node (111) of the transistor device.

Abstract: A method and apparatus for improving signal reception in a receiver (100) by performing all-channel and/or on-channel estimations on a received signal so as to predict future RF environments. The prediction is achieved through the use of one or more detector systems (122, 124) positioned to sample and detect predetermined signal metrics of the received signal (103) prior to analog-to-digital conversion (112) and subsequent post-processing (114). Future estimations of the channel condition are thus generated prior to the arrival of the actual samples (115) at a controller section (116). The detectors (122, 124) provide triggers (123, 125) to the controller (116) so that active stages (130) within the receiver (100) can be adjusted and scaled as needed via a serial port interface (SPI) (126) based on signal conditions.

Abstract: Both water intrusion and wind noise issues are addressed with an audio porting assembly including a single frame (102) having a speaker cavity (110) and a microphone cavity (112) formed therein. An opening (114) formed within the frame (102) between the speaker cavity (110) and the microphone cavity (112) provides a path for indirect porting from the speaker cavity into the microphone cavity. A unitarily molded membrane (104) provides a seal over the frame (102).