Abstract: A method and receiver apparatus for a receiving radio unit are disclosed for use in a wireless communication system for processing transmissions from different radio units at the receiving radio unit. A first transmitting radio unit transmits first audio information (e.g., a first audio encoded frame) in a first time slot, and a second transmitting radio unit then transmits second audio information (e.g., a second audio encoded frame) in a second time slot. The receiving radio unit receives radio frequency (RF) signals comprising a first bit stream corresponding to the first audio information, and a second bit stream corresponding to the second audio information. Based on the first bit stream and the second bit stream the receiving radio unit generates a single analog audio signal that comprises combined audio information corresponding to the first audio information and the second audio information.

Abstract: A receiving device in the trunked radio communications system receives an outbound signaling word comprising at least an opcode field and a band plan field, wherein the opcode field indicates that the outbound signaling message is a system status message and the band plan field indicates the band plan in use on the site. In another embodiment, the receiving device receives an outbound signaling word comprising at least an opcode field, a site identification field and a four bit band plan field, wherein the opcode field indicates that the outbound signaling message is an adjacent control channel message, the site identification field identifies a second site, and the four bit band plan field indicates the band plan in use on the second site.

Abstract: A device uses a method for assigning a traffic channel in a wireless communication system. The method includes: receiving on a control channel a first message that includes a request for a traffic channel having a traffic channel structure; determining a delay in arrival of the first message; comparing the delay in arrival to a threshold value for the traffic channel structure; and when the delay in arrival exceeds the threshold value, assigning an available traffic channel in response to the request, wherein the traffic channel has a delay tolerance that exceeds the delay in arrival.

Abstract: A lamp assembly including a plurality of light sources, a plurality of light guides, and at least one lens. The plurality of light guides are optically connected to the plurality of light sources, and selected plurality of light sources emit light that is selectively propagated through the plurality of light guides. The at least one lens is optically connected to the plurality of light guides.

Abstract: A lamp assembly including a plurality of light sources, a plurality of light guides, and at least one lens. The plurality of light guides are optically connected to the plurality of light sources, and selected plurality of light sources emit light that is selectively propagated through the plurality of light guides. The at least one lens is optically connected to the plurality of light guides.

Abstract: A ventilation system and method for automotive lighting systems includes at least two tortuous paths between the interior of the lighting enclosure and the surrounding atmosphere. The two paths include portions which are at least partially vertical and gravity assists in separating foreign material from air drawn through these portions. By providing at least two paths, foreign material in one path will not be drawn into the enclosure as air can still pass through the other path. The ventilation system and method can be integrally formed with the enclosure, or can be separately formed and attached to the enclosure.

Abstract: A receiving device in a trunked radio communications system determines a transmit frequency, wherein the transmit frequency is calculated by subtracting 440 from a voice channel number, multiplying by a channel spacing and adding a base frequency to yield the transmit frequency, if the voice channel number is between 440 and 559. The receiving device determines a receive frequency by 851.0250 MHz+[(a voice channel number?440)*25,000 Hz], if the voice channel number is between 440 and 559. In any case, the voice channel number is communicated in an outbound signaling message defined by Motorola's 3600-baud radio trunking protocol.

Abstract: A receiving device in a trunked radio communications system determines transmit and receive frequencies by a mapping. The receiving device receives a voice channel number, wherein the voice channel number is communicated in an outbound signaling message defined by Motorola's 3600-baud radio trunking protocol. The receiving device tunes to about a transmit frequency of 806.0250 MHz, if the voice channel number is 440; tunes to about a transmit frequency of 806.0500 MHz, if the voice channel number is 441; tunes to about a transmit frequency of 806.0750 MHz, if the voice channel number is 442; etc. The receiving devices tunes to about a receive frequency of 852.5250 MHz, if the voice channel number is 500; tunes to about a receive frequency of 852.5500 MHz, if the voice channel number is 501; tunes to about a receive frequency of 852.5750 MHz, if the voice channel number is 502; etc.

Abstract: A receiving device in a trunked radio communications system requests a voice channel for a communication and receives an outbound signaling message on a control channel comprising a voice channel number for the receiving device to utilize for the communication. The receiving device tunes to about a transmit frequency, wherein the transmit frequency is determined by multiplying the voice channel number by a channel spacing and adding a base frequency to yield the transmit frequency, if the voice channel number is between 0 and 119. The receiving device modulates the communication to about the transmit frequency and transmits the modulated communication with a transmit deviation that relates to a maximum of 4 kHz.

Abstract: A mobile repeater (300) is improved to include a database (303) that allows the mobile repeater to store registrations received from subscriber units. Additionally, the mobile repeater may include a voice on control switching element (309) for use with an extended control channel. Further still, the mobile repeater may include encryption elements (305-308) for the maintenance of encrypted control channels. In this manner, the mobile repeater may provide an improved quality of services to subscriber units.

Abstract: A router (200) comprising a router controller (203) coupled to a packet-switched interface (202) and a circuit-switched timedivision multiplexed interface (204) allows framed packet-data to be conveyed through a circuit-switched system, Inbound address information (208) included with inbound framed packet-data (207) is used by the router controller to route inbound packets (209) to associated inbound time slots (211). Conversely, the router controller determines outbound address information (218) for outbound packets (216) based on identifications (214) of associated outbound time slots (213). Such a router can be incorporated into a communication system 700. Sites (701-702) that transceive framed packet-data are coupled to a circuit-switched digital cross-connect switch (705) via the routers. A system controller (706) controls the circuit-switched digital cross-connect switch such that the associated inbound time slots are broadcast to at least the associated outbound time slots.

Abstract: A simulcast broadcast system wherein two signals (103 and 106) intended for simultaneous broadcast are transmitted from a source site (100) to remote sites (200) discrete from one another. At the remote sites, the two signals are separately processed, including the introduction of appropriate delay (305 and 312), prior to combining them for broadcast in conjunction with other remote sites. One or more monitoring sites (400) can also be provided to monitor reception coherence within the system and to provide operating measurement information to allow automatic control of various simulcast system parameters, including delay.