Abstract: A digital telephone system for processing a plurality of information signals received in parallel over telephone lines from a public network exchange which are then transmitted in parallel over a plurality of radio frequency (RF) channels to a plurality of mobile subscriber units, each capable of receiving on any of those RF channels, includes an exchange, signal compressors, a multiplexer, a transmitter and a central processing unit. The central processing unit is responsive to a received connection request signal by providing an assignment signal indicating a slot and an RF channel to be used for the respective information signal. The central processing unit maintains a memory of which slots and which RF channels are so assigned and consults the memory upon receipt of the connection request signal and then provides the assignment signal that establishes the utilization of one of the slots at one of the RF channels that is not assigned to another information signal.

Abstract: A wireless, cellular radio link is provided from a base station to a plurality of subscriber stations within a cell reception area. Information data, which may be of textual, video or other format, are communicated asymmetrically as high bandwidth transmissions in the downstream direction to the users while low upstream bandwidth is provided to permit users to request the data or to provide return radio link condition information. Buffers associated with respective subscribers collect requested data from information providers for transmission by the base station in a statistical time division multiplexed (STDM) fashion, whereby each subscriber may be assigned a minimum transmission time interval during which data will be transferred from the associated buffer. Controlled logical token passing governs a variable token interval during which data transmission for each buffer is permitted in turn.

Abstract: A method and an arrangement are disclosed for implementing fast signalling in a communication connection between a base station and a mobile station of a cellular radio network. There is defined an arrangement of repeatedly occurring frames that consist of pieces of allocatable radio communication capacity between the base station and mobile stations communicating therewith. Pieces of radio communication capacity are allocated from the arrangement of repeatedly occurring frames to dedicated communication channels. A certain piece of radio communication capacity is allocated from the arrangement of repeatedly occurring frames to a non-dedicated fast signalling channel between the mobile stations and the base station. This piece of radio communication capacity allocated to a non-dedicated fast signalling channel is used for conveying fast signalling messages between at least one mobile station and the base station.

Abstract: A method is disclosed for assigning timeslot numbers to timeslots used for transmission and reception of signals between nodes in a network (1) of nodes (A-H). Each node (A-H) is able to communicate with at least one other node (A-H) by a transmission link (2) between said each node (A-H) and said at least one other node (A-H). At least some of the nodes (A-H) have a respective transmission link (2) to each of plural other nodes (A-H). Each transmission of a signal over a link (2) from a first node (A-H) to a second node (A-H) takes place during a timeslot. The method includes the steps of assigning timeslot numbers to each timeslot in sequence in ascending order of the number of available choices of timeslot number at each timeslot.

Abstract: A frequency carrier allocating method is provided which can effectively utilize frequency carriers when the traffic of the uplink is asymmetric to that of the downlink in the FDD cellular system. Plural frequency carriers are arranged in each of two frequency bands FB1 and FB2. Base stations are divided into two groups BSG1 and BSG2. In the group BSG1, frequency carriers in the frequency band FB1 are allocated to the downlink of a base station while frequency carriers in the frequency band FB2 are allocated to the uplink thereof. In the group BSG2, frequency carriers in the frequency band FB2 are allocated to the downlink of a base station while frequency carriers in the frequency band FB1 are allocated to the uplink thereof. Bi-directional communication is performed between the base station and a mobile station using the frequency of the frequency carrier.

Abstract: A subscriber link to a central office which employs data compression, forward error correction, and advanced modulation techniques and to connect subscribers to multiple communications networks to provide an array of services. A device provides normal telephone service in the event of an equipment failure. At the subscriber end, a server called an intelligent services director (ISD) provides multiple independent connections for telephones which ordinarily connect to multiple access virtual circuits generated on the subscriber link over a twisted pair. A device called a facilities management platform (FMP) at the central office end of the link, among other things, provides interfacing of the subscriber link to various networks including a digital subscriber loop (DLC) and packet switched networks. Ordinarily telephones connected to the ISD require power and correctly functioning modems and controllers in the ISD and the FMP to have access to the outside world.

Abstract: A method of frequency utilization in mobile communication which is capable of realizing efficient frequency utilization in the case where widths of the uplink communication frequency bandwidth and the downlink communication frequency bandwidth are different in mobile communication is disclosed.

Abstract: A method and system for managing communication resources between nodes in a network, and more particularly to a dynamic distributed multi-channel time division multiple access (TDMA) slot assignment method is presented. The method and apparatus include a set of higher level heuristics that enable the wireless channel access scheme to address predetermined characteristics of the wireless channel access system. These predetermined heuristics include using bootstrap slots, adaptive broadcast cycles, channelized neighborhoods, standby slots, speculation slots, neighbor segregation, hard circuits, and soft circuits.

Abstract: Dynamic allocation of communication channels among communication units (CU) in a communications system. Dynamic channel allocation employs a reservation set for reserving channels and an allocation set corresponding to the reservation set for receiving allocated channels. The reservation set and the allocation set are changed dynamically as a function of network parameters to control the dynamic channel operation. Reservation set information is broadcast downlink to multiple users to reserve an allocation set of uplink radio resources for specific ones of the users. The system uses a modification of the packet data channel (PDCH) of a GPRS/EGPRS or EDGE system which employs an Uplink Status Flag (USF) on each PDCH downlink radio block. The downlink reservation set information is commonly received by all users in the group of users. Allocation delay, bandwidth efficiency and other system parameters are optimized.

Abstract: An improved transmitter apparatus, a receiver apparatus and a base station implemented with the transmitter and receiver apparatuses are described. These apparatuses and the base station serves to establish communication by making use of an orthogonal frequency division demultiplexing demodulation and an inverse spectrum spreading demodulation in combination. The communication coverage thereof can be expaned by making use of an orthogonal frequency division demultiplexing demodulation and an inverse spectrum spreading demodulation in combination.

Abstract: Apparatus is provided for communicating data packets in variable length bursts over a physical layer in a multilayer data communication scheme. Each burst contains information data (40, 50, 60, 64, 74, 78, 82) and overhead (30, 32, 34, 36, 38, 42, 44, 62, 66, 76, 80, 84). The overhead includes forward error control (FEC) data (42, 62, 66, 76, 80, 84). Different burst modes (FIG. 2, 3, 4, 5) are provided to enable a trade-off to be made between bandwidth efficiency and data transmission robustness. The burst modes provide different combinations of modulation (such as QPSK and 16-QAM), symbol rates, FEC coding levels and frame and preamble structure. The apparatus is particularly suitable for use in upstream communications over hybrid fiber coax cable television plants.

Abstract: A telecommunication system for processing a plurality of simultaneous bidirectional communications includes a primary station and at least one secondary station using wireless transmissions over one of a plurality of available RF carrier frequencies. Each carrier frequency has an associated predetermined bandwidth which is designed to accommodate one analog voice signal therein and each carrier frequency contains a plurality of time slots. Each bidirectional communication includes transmit (TX) and receive (RX) information signals.

Abstract: Wireless communication equipment for a CDMA cellular wireless system operating FDD communication and TDD communication of a simplified circuit structure capable of reducing interference with a communication channel is provided. A wireless transmitter for an SS-DS CDMA cellular wireless system operating FDD communication and TDD communication comprises means 105 for outputting pilot channel signals in an FDD band, means 110 for outputting control channel signals in the FDD band, means 115 for outputting communication channel signals in the FDD band, means 122 for outputting pilot channel signals in a TDD band, and means 127 for outputting communication channel signals in the TDD band, and does not have means for outputting control channel signals in the TDD band. Control channel signals are transmitted only in the FDD band.

Abstract: A multi-radio bridge for cost effectively increasing the throughput associated with the bridging of multiple LANs together. The multi-radio bridge incorporates two or more radio devices which provide for substantially simultaneous communication between two or more client-bridges and the multi-radio bridge. Employment of the multiple radios allows for different hopping sequences and/or PN codes to be used so as to avoid collisions between information containing packets. The multi-radio bridge avoids the need to have to add a new bridge for every new LAN added to the system. Furthermore, in systems having extremely heavy traffic, the multi-radio bridge can dedicate two or more radios (operating at different FH sequences and/or PN codes) to one client-bridge thus doubling or more the amount of network traffic throughput.

Abstract: A multi-beam DBS satellite system capable of providing spectrally efficient regional programming is disclosed. The inventive system includes at least one DBS satellite having a repeater connected between multiple uplink antennas and multiple downlink antennas. The repeater has a switching processor and a formatting processor. The switching processor includes circuitry for filtering individual channels of information from the uplink frequency division multiplexed (FDM) beams received at the uplink antennas, and also includes circuitry for switching the channels of information to form a set of switched channels. These switched channels are then combined and routed to the formatting processor. The formatting processor converts the switched FDM information into a combined digital TDM signal that preferably corresponds to the DVB standard.

Abstract: A communications apparatus and a frequency control method thereof, in that control of a reference frequency (local oscillator frequency) is made by feeding back a frequency offset estimate FOS to the voltage-controlled oscillator 103, and the frequency offset between sending and receiving frequencies is corrected by feeding back a frequency offset control value FOC which is based on a sending reference frequency command on downstream control data DCD to sending frequency offset control means 118, to control a sending reference frequency by using both a voltage-controlled oscillator 108 (a frequency control step) and sending frequency offset control means 118 (a sending frequency offset control step).

Abstract: A radio communication system that utilizes an available frequency spectrum that is divided up into a plurality of channels to be used by the radio communication system is operated in accordance with a frequency hopping strategy that permits a user to simultaneously utilize more than one channel during each hop period, wherein it is permissible, but not mandatory, for at least one of the channels utilized by the user during a first hop period to again be used by the user during an immediately following second hop period, so long as at least one of the channels utilized by the user during the second hop period is different from all of the channels utilized by the user during the first hop period. In some embodiments, the number of channels simultaneously utilized by any one user need not be the same as the number of channels simultaneously utilized by any other user.

Abstract: In a GSM (Global System for Mobile communications) system, a lookup table used to scramble intermediate results in a pseudorandom fashion is also used to uniquely associate radio facilities with one another, particularly to associate mobile stations with a base station. Several different lookup tables (RNTBLi) may be used which are uniquely assigned to the radio facilities, with the intercommunicating radio facilities being assigned the same lookup table. The different lookup tables are preferably generated on the basis of subscriber identifications, whereby each subscriber is assigned a respective one of the lookup tables.

Abstract: A communication apparatus having a master device connected with a plurality of outside lines and a plurality of slave devices wirelessly connected with the master device, the communication of the communication data between the master device and the plurality of slave devices being performed for each communication frame on the basis of the spread spectrum communication method, the communication apparatus further having, the master device having: an allocation device for dividing the communication frame into at least a first slot and a second slot, for allocating the first slot to the communication data to be used for performing a first communication between the master device and a first slave device among the plurality of slave devices, and for allocating the second slot to the communication data to be used for performing a second communication between the master device and a second slave device among the plurality of slave devices; and a second communicating device for performing simultaneously the first comm

Abstract: A communication method for carrying out communication in a multi-carrier format using a plurality of sub-carriers and including a first communication step of setting an interval among the plurality of sub-carriers to a first frequency interval when information of a first kind is communicated, and a second communication step of setting an interval among the plurality of sub-carriers to a second frequency interval, that is wider than the first frequency interval, when information of a second kind is communicated.

Abstract: The establishment of an interactive broadcasting network requires not only a transmission channel from transmitter to receiver but also a transmission channel from receiver to transmitter. A novel method of creating a data feedback channel from receiver to transmitter is implemented in a common frequency network and involves the use of a transmission procedure in conformity with the DAB standard. Each receiver or user is assigned an identifier which is transmitted in the data feedback channel at specially reserved frequencies to request transmission capacity. A computer then allocates transmission capacity to the receiver. The signals received in the forward channel are evaluated using the synchronization symbols they contain in order to synchronize the transmitter component in the receiver. The novel process can be used in all common frequency networks which use data transmission in conformity with the DAB standard and ensures a particularly economical synchronization in the receiver.

Abstract: A system for radio frequency communications between a first unit and a second unit. The communications are conducted over a first frequency and a second frequency. The first unit and the second unit each transmit and receive communications, including first, second, third and fourth information, in bursts over select time intervals, including a first time interval and a second time interval. The system includes communication between a plurality of wireless handset units and a base unit utilizing a FDD/TDD format.

Abstract: When radio communication units communicate with each other, communication is performed using a hopping pattern obtained by shifting a hopping pattern that is used in communication between a radio control unit and the radio communication units.

Abstract: Links in a network are switched between nodes in response to traffic and failure status of network links as follows. A total message time is calculated for a given network configuration. Nodes are identified having the most and the least messages. A new network configuration is considered, wherein a link from the minimum traffic nodes is reconfigured to the maximum traffic nodes. A maximum link and/or maximum connectivity rule are evaluated for the possible new configuration. If such a rule is not violated and the total message time is improved by the new configuration, the analysis is repeated for possible third, fourth, etc. configurations.

Abstract: A method for multiple users accessing a common channel in which coded application bits are generated and transmitted for a plurality of applications for a plurality of users. A plurality of tones are assigned to the coded application bits for each application. The coded application bits for each application are encoded into multitone symbols at a transmitter using the plurality of tones assigned to the coded application bits. The multitone symbols for each application are synchronized for transmission on a common uplink channel. At a receiver, the multitone symbols for each application are received from the common channel and tone decoded into the coded application bits for each application using the plurality of tones assigned to the coded application bits. The coded application bits are then decoded for each application.

Abstract: An increase in usable carrier frequency signals within a frequency band is achieved by identifying each carrier frequency signal or channel, not only by its base or reference frequency, but also by a rate of change of the carrier frequencies, such that for each carrier frequency assignment, an additional number of transmission channels, each having a different linear rate of change of frequency starting simultaneously from the reference carrier frequency, is provided where the instantaneous carrier frequency of these channels changes continuously over the frequency band, but each with a different incremental rate of change. Reception comes from tuning a receiver to the reference carrier frequency which adjusts automatically to the frequency reached at that time by a selected carrier frequency signal and then changing the tuning circuit at the same rate as the selected carrier frequency signal changes frequency starting from the predetermined base or reference frequency.

Abstract: A network hub which allows the transmission of data at varying data transfer rates. Data is divided into different transfer protocols and converted by an exchange unit to transform the data of different groups into appropriate speed networks.

Abstract: A system and method for optimizing usage of a communications transmission medium. The transmission medium may be sliced into time and frequency domains so as to create time-frequency slices for assignment to users having varying access rates and user-application requirements. Through scheduling of the various speed users within the frequency and time domains, the system and method can efficiently allocate and make use of the available spectrum, thereby accommodating higher rate users requiring greater bandwidths and time slot assignments while still preserving cost-efficient access for lower speed users. Depending on the signal modulation scheme, the time-frequency slices may be allocated on non-contiguous frequency bands. The system and method is also applicable to code-division multiple access (CDMA) techniques by slicing the available code space along time-code domains, frequency-code domains or, in three dimensions, along time-frequency-code domains.

Abstract: A multicarrier transmission system (100) routes data symbols from a data source (142) to a multicarrier modulator (145). Each modulator (201, 202, 203) within the multicarrier modulator (145) is coupled to a corresponding gain adjuster (211, 212, 213) that distributes the available transmit power across various subcarriers. Power distribution, is determined in part, upon the noise sensitivity of the transmitted information. In accordance, data stream symbols of like sensitivity are grouped (520) and transmitted during defined time intervals. Each such group is assigned a unique transmission power level (530). At any given moment in time, all subcarrier transmission power levels will have an identical amplitude, thereby mitigating the impact of subchannel-to-subchannel interference.

Abstract: A swept frequency communication system includes a modulator that multiplies a frequency sweep signal with one or more underlying modulated communication signals to produce a swept frequency signal having a number of headerless tracks located directly adjacent one another in the swept frequency/time domain. A demodulator receives the swept frequency signal after that signal has been passed through a wireless channel, isolates a particular track of the received swept frequency signal to prevent a near/far problem, A/D converts the isolated track, resweeps the digitized isolated track, and then equalizes the isolated track using a blind channel equalizer to eliminate time-varying amplitude/phase impairments caused by transmission of that track through the wireless channel. The demodulator then removes the sweep signal from the equalized swept frequency track and decodes or demodulates the underlying modulated communication signal.

Abstract: A time sharing method and apparatus for frequency reuse in cellular communication systems. Frequency reuse is enhanced by synchronizing cell transmit/receive base stations in a cellular system to a common time base, and then sharing the available frequencies via allocated time slots. Cells using the same frequency that may interfere with each other are activated only during selected time intervals while same-frequency cells nearby are deactivated. The deactivated cells are then in turn activated while previously activated same-frequency cells nearby are deactivated. The frequency time slots may be of equal length, or longer time slots may be allocated to cells having higher usage rates, as determined in any of a number of ways. The time slots may be mutually exclusive, or may overlap. The time sharing technique of the present invention allows design of cell systems with many reuse patterns.

Abstract: A system and method for optimizing usage of a communications transmission medium. The transmission medium may be sliced into time and frequency domains so as to create time-frequency slices for assignment to users having varying access rates and user-application requirements. Through scheduling of the various speed users within the frequency and time domains, the system and method can efficiently allocate and make use of the available spectrum, thereby accommodating higher rate users requiring greater bandwidths and time slot assignments while still preserving cost-efficient access for lower speed users. Depending on the signal modulation scheme, the time-frequency slices may be allocated on non-contiguous frequency bands. The system and method is also applicable to code-division multiple access (CDMA) techniques by slicing the available code space along time-code domains, frequency-code domains or, in three dimensions, along time-frequency-code domains.

Abstract: A first control channel associated with a first cell is communicated in the first cell using a first time/frequency window. The first control channel and a traffic channel are communicated in a second cell using the first time/frequency window. The first control channel may be communicated in the second cell when the first time/frequency window is unassigned to a traffic channel in the second cell. The first time/frequency window may be assigned to a traffic channel in the second cell, and the first control channel may be communicated in the second cell when the traffic channel to which the first time/frequency window is assigned in the second cell is idle. The traffic channel to which the first time/frequency window is assigned in the second cell may be communicated over different carrier frequency bands to thereby frequency hop the traffic channel.

Abstract: A system is disclosed which can measure and control the absolute phase angles of individual coherent Frequency-Division-Multiplexed (FDM) carriers which have been combined to form a composite signal. User-specified phase relationships for the carriers are predetermined to produce an optimum peak factor (peak power to average power ratio) of the composite signal for a given application. In the preferred embodiment, phase relationships chosen to minimize peak factor can dramatically reduce the presence of intermodulation distortion products which can be detrimental to present communication architectures, such as Community Antenna Television (CATV).

Abstract: A method for establishing simultaneous communications between nodes having neighboring nodes in a multi-hop network of transceiver nodes arranged in neighborhoods includes determining the quality of communication links between the nodes of a neighborhood and adjacent neighborhoods. A table of quality data is stored representing the quality of communication links between nodes of the neighborhood for each node. A set of performance criterion of desired service in the neighborhood is stored. A set of possible link assignments between ones of the nodes in the neighborhood is generated from the table of quality data based upon a maximized performance criterion of desired service in the neighborhood. Link assignments are then allocated between nodes of the neighborhood based upon the desired performance criterion.

Abstract: A local multipoint data distribution system (10) simultaneously accommodates many communication sessions occurring at a wide variety of data rates. space surrounding cell sites (12) is partitioned into sectors (16), and the spectrum is allocated to the cell sites (12) so that adjacent sectors (16) use different spectrum portions, but the entire spectrum is reused numerous times at each cell site (12). A time diversity scheme allocates different numbers of time slots (54) to different calls. Time slot identifiers are assigned in contiguous blocks in an assigned numbering system (56). The time slot identifier assignments are translated into a counted numbering system (58) which causes the time slots (54) for any call to be distributed throughout a frame (48) and interleaved with time slots (54) assigned to other calls.

Abstract: A synchronized frequency hopping method and apparatus for use in a cellular communication system where the cellular communication systems has a plurality of cells and a plurality of frequencies available to be assigned to the cells. At predetermined times, cells in the system synchronously change or hop to a new frequency. The new frequency to which a cell hops to may be a function of the present frequency the cell is assigned. In addition, synchronized frequency hopping may occur at predetermined intervals and the pattern of hopping may periodically repeat. This technique limits the period of time a non-system source of interference may impair communications in any cell since the cell hops to different frequencies periodically.

Abstract: The invention provides a communication unit (MS1), communicating with a first radio base station (BTS1) on a dedicated communication channel (CH1) in a radio communication network (NET1) using a combination of TDMA and FDMA, with an increased flexibility in terms of when the communication unit (MS1) can receive signals from a second base station (BTS4). The increased flexibility is achieved by the communication unit (MS1) selecting some of the time slots comprising the dedicated communication channel (CH1) and ignoring to communicate with the first radio base station in these selected time slots and instead using them to receive signals (BCCH4) from the second radio base station (BTS4). In a GSM mobile station (MS1) according to the invention, the "stolen" time slots are used for identification of a neighboring base tranceiver station (BTS4), i.e.

Abstract: In a subscriber interface control method, a plurality of subscriber interface sections set with different unique accommodation location numbers corresponding to accommodation locations thereof and a subscriber interface control section connected to the subscriber interface sections via a control/monitor signal line to control the subscriber interface sections and monitor operation states thereof. Management number sections in which different management numbers are set are arranged in the subscriber interface sections. The subscriber interface control section controls the subscriber interface sections and monitors the operation states thereof by sending the management numbers to the control/monitor signal line.

Abstract: A switching device include a buffer for temporarily storing a signal sent by a corresponding input terminal; variable channel transmission units, one of which is provided for each input terminal, for outputting a received signal with one of N different channels; fixed channel reception units, one of which is provided for each output terminal, for receiving the signal carried with a given channel and for outputting a signal with the given channel to a corresponding output terminal, with the given channel not overlapping any other; a variable channel control unit for synchronously altering, in consonance with predetermined patterns, channels with which the variable channel transmission unit outputs a signal, so that two or more variable channel transmission units do not simultaneously output signals with the same channel; and a buffer control unit for synchronously reading from the buffer a signal that is to be output, while altering the channel with which the variable channel transmission unit transmits a sign

Abstract: The disclosure relates to the transmission of data by packets, in a network, with a search for an optimum use of the allocated band of frequencies. The packets are all formed by a header followed by an information field. The headers are all sent out on the same carrier frequency and the radio resources allocated to an information field are limited to a parallelogram demarcated by two first parallels corresponding to two fixed frequencies external to the frequencies allocated to headers and by two second parallels that have the same frequency/time slope for all the packets and whose position in time is deduced from the observation of the header. Thus, with knowledge of the resources used by the packets that are being transmitted, a terminal may send out a new packet as closely as possible to the packets that are being transmitted, but without any risk of interference with these packets. Application to transmission by packets.

Abstract: A method for improving the delectability of a broadcast control channel of base in a radio system in which the transmitting and receiving frequency resources of respective transceiver units have been divided on the TDMA/FDMA principle into channels. The base stations have equipment for establishing radio connections to radio units in their respective radio coverage areas, and respective transmitters for transmitting a broadcast control channel. At least two of the base stations are arranged to transmit the broadcast control channel by utilizing the same predetermined frequency channel. In order to reduce interference, the transmission power used when transmitting on the predetermined frequency channel by the transmitters of the respective base stations is adjusted so as to be lower in those time slots in which the broadcast control channel is not transmitted, than it is in that or those time slots in which the broadcast control channel is transmitted.

Abstract: In the CATV communication system, each channel comprises a down control channel which employs a carrier wave (fd0) and accommodates a down delay control channel slot and down assignment control channel slots therein, a plurality of down communication channels which employ carrier waves (fd1 to fd4) different from that employed in the down control channel and accommodate down communication data channel slots therein, and a plurality of up channels which employ carrier waves (fu0 to fu3) and accommodate up delay control channel slots, up assignment control channel slots, and communication data channel slots therein.

Abstract: A central station is connected to a plurality of remote stations through in-bound channels and out-bound channels. Data is transmitted from the respective remote stations to the central station through the in-bound channels and data is transmitted from the central station to all of the remote stations through the out-bound channels. Possibility of data transmission delay is reduced by changing the number of either or both of the in-bound channels and the out-bound channels according to a variation of amount of data transmitted/received between the remote statios and the central station.

Abstract: A method and apparatus of communicating information using Time Division Multiple Access and adaptive transmission and reception are disclosed. Signal bursts are transmitted from TDMA transmitters to a TDMA receiver wherein the transmitter codes the information and transmits coded information to the receiver using at least one of two timeslots of a plurality of timeslots in a repetitive TDMA frame period. Both of the two timeslots are received whether or not the transmitter has transmitted using one or two timeslots and the received signals are classified as intended and non-intended. Successively received signals classified as intended are then assembled into a block for decoding to reproduce the information.

Abstract: The method and apparatus of the present invention uses DSI with a TDMA/FDMA communication protocol. For each speech frame detected by a speech detector (110), a communication unit (CU) (108) sends (440) a speech detected indicator (SDI) (208) to a switching facility (SF) (138). In response, the SF (138) allocates an uplink reuse unit (260) which identifies a carrier frequency (301-360) and timeslot (190-193) which the CU (108) should use to transmit a traffic burst containing a compressed speech frame. The SF (138) allocates (506) the uplink reuse unit (260) from a pool of available uplink reuse units and, if necessary, allocates a downlink reuse unit (262) from a pool of available downlink reuse units. A message (220) describing the reuse units (260, 262) is transmitted (508) to the CU (108) which then transmits (450) and receives (480) traffic bursts during the allocated reuse units (260, 262).

Abstract: When establishing a link (i-j) between two nodes i, j in a mobile radio communications network, transmission parameters are assigned such that conflicts and interference with nodes that neighbor the nodes i and j are avoided. A time-slot and a frequency-code value are assigned to the link (i-j) from a defined set of time-slots T, and from a defined set of frequency-code values FC. Set T contains time slots (t) during which links in the network can be activated, and set FC contains frequency-code values (f, c) each of which specifies a frequency or a frequency-code pair for association with the links. A time slot t.sub.k is first chosen from set T which slot is not in use for links between node i and nodes neighboring node i, or for links between node j and nodes neighboring node j. A frequency-code value (f, c).sub.1 is next chosen from set FC which value is not in use by any node that neighbors node i or by any node that neighbors node j, during the chosen time slot t.sub.k.

Abstract: A terrestrial Rf telephone system provides a plurality of voice signal channels on a plurality of forward direction carrier frequencies, each carrier frequency having an associated predetermined bandwidth which is designed to accommodate one analog voice signal, and each carrier frequency containing a plurality of slots. The system includes a base station having a plurality of circuit paths for receiving a plurality of forward direction digitized voice signals; a plurality of compressors for compressing the voice signals; a processor for assigning each of the compressed voice signals onto a dynamically assigned frequency/slot; a plurality of channel controllers, each for sequentially combining the compressed digitized voice signals into a single transmit channel bit stream, with each compressed voice signal occupying a respective repetitive sequential time slot in the transmit channel bit stream; and a plurality of modulators for modulating the carrier frequencies.

Abstract: A wireless network is initialized by communications between mobile units forming an ad hoc network or by communications between a mobile unit and an access point unit. Mobile units transmit announcements in order to establish a communication link. To ensure the announcements are received, the mobile units scan different frequencies at various times using various hop sequences. Once communication is established, one mobile unit adopts the hop frequency of the other mobile unit according to a comparison between the hop frequencies of the two units. Multiple mobile units initialize to form ad hoc networks in similar manner.

Abstract: A method for automatically managing the communication channel resources between two nodes having neighboring nodes in a network of transceiver nodes, wherein each node communicates during specific time slots and uses multiple frequencies on a time division multiple access basis includes the steps of storing a table of possible communication frequencies and time slots between nodes; and announcing and transmitting during a specific time slot, a selected transmit frequency and slot from a first node to a second node and all neighboring nodes of the first node. The announced frequency and slot have certain constraints on reuse within two hops of the transmitting node to thereby establish contention free communication on that frequency and slot between the first and second nodes.