Abstract: A demodulator determines a time of arrival of an access signal. Access signals that do not result in a time of arrival are discarded. Upon obtaining a time of arrival, the access signal is equalized and a training sequence of bits in the equalized access signal is compared to a reference sequence of bits. A burst confidence metric is obtained in the comparison by summing the number of matching bits. The access signal is discarded if the burst confidence metric is less than a threshold number. A decoder performs a parity check on access signals that have a burst confidence metric exceeding the threshold number. The access signal is discarded if the parity check fails. Upon passing the parity check, the access signal is re-encoded and compared to its received version. If a number of errors from the comparison exceeds a bit error threshold, the access signal is discarded.

Abstract: A method of operating a mobile terminal providing wireless communications can include receiving communications service from a first communications network providing service over a first coverage area. While receiving communications service from the first communications network, a first identity code can be received from a second communications network providing service over a plurality of second coverage areas wherein a first one of the second coverage areas includes the first coverage area and wherein the first identity code from the second communications network identifies availability of service with the second communications network in the first one of the second coverage areas. After loss of communications with the first communications network, a second identity code can be received from the second communications network.

Abstract: In a data link communications system there is provided a dual mode of operation multiple access system for communication between a plurality of spoke stations and a central hub station which generates a spoke epoch time comprising a plurality of time division slots in which a spoke station can communicate a priority interrupt request to the central hub station. The spoke epoch time comprises one or more dedicated spoke time slots in which only one hub station may transmit to the hub station to the exclusion of all other spoke stations. The spoke epoch time further comprising one or more priority interrupt request time slots in which all spoke stations can transmit priority interrupt requests to the hub station. Controller means in the hub station provides for evaluating priority interrupt requests from the spoke stations and for granting transmission access to one of said spoke stations during predetermined time slots in the next spoke epoch time.

Abstract: A wireless communication system wherein wireless infrastructure adapts access parameters and manages channel resources based on detailed reconnection information obtained from individual mobile stations. Mobile stations transmit particular reconnection attempt status information to the wireless infrastructure. The reconnection attempt status information, along with the aggregate statistics of other mobile stations, is used by the infrastructure to adapt access parameters to increase or decrease the likelihood of successful access. This allows the infrastructure to tune access parameters to particular mobile station information and it also allows the infrastructure to provide better resource management for both traffic channel assignments and access channel usage.

Abstract: A method and system to determine when a wireless terminal has been paged by a servicing base station. An encoded paging burst is received on a paging channel and then decoded to produce a decoded paging burst. The decoded paging burst is processed to determine if it is a null page. When the encoded paging burst is a null page, it is processed to produce a null page pattern. The wireless terminal may then enter a sleep mode or reduced functionality mode for a predetermined period of time. The wireless terminal awakes from the sleep mode to receive additional encoded paging bursts. Processing the additional encoded paging bursts produces a processed encoded paging burst, which is compared to the null page pattern. When compared favorably, the encoded paging burst is considered a null page, allowing the wireless terminal to re-enter the sleep mode without fully decoding the paging burst.

Abstract: Common dial-up numbers and/or common ID numbers are set for the simultaneous transmission of information, such as news or advertising, to a plurality of mobile wireless terminals. In addition, these common dial-up numbers and/or common ID numbers are also recorded in a switching center that sends out information. When information is sent from the information providers, the switching center simultaneously transmits this information to mobile wireless terminals having these common dial-up numbers and/or common ID numbers.

Abstract: Within a radio access network (111, 112) an access point (181, 182, 183 and 184) selects a channel by first randomly choosing a channel from those available for use. The Access Point then monitors the channel for a random interval to determine if the channel is presently carrying traffic. The Access Point will select the channel unless the channel is in use by another AP. If so, then the AP will select another channel and commence monitoring for a random interval in order to determine whether the channel is available. The AP will continue to choose channels until a suitable channel is found, or all available channels have been exhausted.

Abstract: A wireless mobile telephone (400) is operated so as manage the performance of “off-frequency searches,” that is, searches for base station pilot signals that differ in frequency from the pilot signals in the mobile station's active set. Whenever frequency searching is performed (such as responsive to emerging from a reduced-power sleep mode), the mobile station performs on-frequency pilot signal searching (902) upon a prescribed active set frequency. Only if a prescribed off-frequency searching condition (903-908) is satisfied, the mobile station additionally performs off-frequency pilot signal searching (912) upon one or more neighboring base stations' frequencies.

Abstract: A mobile terminal can identify cellular control channels that can be received by the mobile terminal from a cellular system, by identifying a cellular control channel that can be received from a history list of cellular control channels that were previously received by the mobile terminal. A next cellular control channel that can be received by the mobile terminal then is scanned for, by skipping at least one cellular control channel that is adjacent the cellular control channel that was identified, based on channel allocation rules in the cellular system.

Abstract: A communications system includes a base station and a plurality of remote stations wirelessly communicating with the base station and transmitting a requested service rate to the base station. The base station allocates a next transmission of data to the remote stations based on a scheduling operation. The scheduling operation includes determining an average service rate for each remote station and determining a priority value for each remote station based on the requested service rate and average service rate. In allocating the next transmission of data, at least one of the average service rate and the priority value is modified to thereby control data throughput of the communications system.

Abstract: The invention relates to cellular mobile communications systems and more specifically to a system and method for efficiently managing system control signaling to optimize spectrum and other important system resources.

Abstract: A system and method reduces cross-beam interference in multi-beam wireless data-transmission system through temporal separation of the multiple beams. A sector of a cell is geographically divided such that a number of beam patterns correspond to a number of user-group areas. For example, the sector can be divided such that four user-group areas are created. The number of groups and beam patterns can be increased or decreased. Forward link transmissions from a base station to a plurality of user terminals are patterned such that transmissions to adjacent user-group areas do not occur during the same time intervals. According to one operation, pilot signal transmissions are suppressed within a beam if no data is transmitted during a corresponding temporal period. According to another operation, temporal guard slots are introduced to avoid inter-cell interference. Further, in some operations, user terminals report to the base station to indicate one or more preferred user-group areas for their inclusion.

Abstract: A mobile communications system is disclosed that includes a first local routing manager (LRM) providing a first network in which a mobile terminal is currently located, a second local routing manager (LRM) providing a second network in which a counterpart terminal communicating with the mobile terminal is currently located, and a home routing manager (HRM) managing correspondence between the unique home address of the counterpart terminal and the second network. The first LRM has a controller that acquires address information of the counterpart terminal from the second LRM, via the HRM, when the first LRM does not have the address information, and communication means that transmits the address information of the counterpart terminal to a router of a new cell in the first network when the mobile terminal moves into the new cell.

Abstract: The invention provides a method of reestablishing wireless communications for a mobile vehicle. After a communication link failure on a first communication link is detected, it is determined whether to reconnect on the first communication link based on at least one communication condition factor, and then an attempt is made to establish a second communication link based on the communication condition factor determination.

Abstract: A system and method are presented for expediting acquisition of an operating channel in a wireless communications telephone device. The method activates a wireless communications telephone device and identifies the wireless device geographical location. The method correlates a Number Assignment Module (NAM) with geographical location information and selects the NAM. The method also correlates a predetermined group of channels in a Priority Roaming List (PRL) in the selected NAM with geographical location information and selects the channel group. The method scans channels in the PRL beginning with channels in the selected channel group.

Abstract: A radio communication system has a random access channel for the transmission of data (214) from a secondary station to a primary station. Such a channel is intended for use by secondary stations having data (214) to transmit to a primary station while not actually engaged in a call. Before the transmission of its data (214), a secondary station transmits a message (302) that provides information on the length of the data transmission (214), and may include format information relating to the data (214). This scheme is particularly effective when combined with a scheme signaling availability of random access channel resources, for example by use of an availability (AV) message (402). In this case, a primary station can signal future availability of resources that are currently in use.

Abstract: A cellular system comprises base stations and terminals. A certain first base station (105) supports only a certain first modulation method (301) and a certain second base station (104) supports both the first modulation method (301) and a certain second modulation method (302). In order to perform cell reselection there is communicated information to the terminal (101) about which modulation method those base station support, the cells of which are possible new cells for the terminal. A new cell is selected by utilizing the information about which modulation methods the base station support.

Abstract: The selection of the primary control signal bus to use for a given radio head is based on propagation delay to the relevant radio head. A plurality of radio heads are cascaded in a chain with buffered error correction therebetween. At least first and second control interfaces connect to the chain and supply control information thereto via respective control signal busses, which may be virtual busses. The propagation delay from a first control interface to a first radio head over a first bus is determined. Likewise, the propagation delay from a second control interface to the first radio head over a second bus is determined. Thereafter, the radio head determines which control signal bus to select as its primary control signal bus based on the respective propagation delays between the first radio head and the first and second control interfaces.

Abstract: The present invention relates to a physical channel allocation method of a mobile communication system and a communication method using the same which is capable of allocating physical channels efficiently for a RACH (Random Access Channel) and a CPCH (Common Packet Channel) having extra up-link scrambling code in a next generation mobile communication system.

Abstract: There is disclosed an interworking function unit for transferring data between a wireless network and an Internet protocol (IP) data network coupled to the wireless network. The interworking function unit comprises a protocol conversion controller that receives incoming data packets from the wireless network, wherein the incoming data packets are generated by a first mobile station and are formatted according to a protocol associated with the wireless network. The interworking function unit converts the incoming data packets to IP data packets formatted according to an Internet protocol of the IP data network. The interworking function unit also comprises a first security controller for preventing unprovisioned mobile stations from accessing the IP data network through the wireless network. The first security controller receives the IP data packets and replaces each original IP packet header with a replacement IP packet header containing the IP address of a provisioning server.

Abstract: The invention relates to a system and method for use in wireless packet data mode communications for enabling communication between a source device (102a) and one or more target devices (102b) with a reduced set-up time. The invention captures in a control structure (600), one or more communication parameters (602-608) during the set up of the source device (102) and a base station (106). Then the control structure (600) is transmitted to the one or more target devices (102b) during the period of the source device's (102a) configuration and is utilized to configure the one or more target devices (102b) to communicate with the source device (102a) via the base station (106), thus reducing the total time required to set-up the communications.

Abstract: A communication system adopts communication means having a small effective communication range for communication between mobile terminals and a server functioning as a cell station, so that each server is responsible for a small range only. In this manner, the communication system produces information about how servers are distributed on the network based on the geographic location of each server, thereby pre-delivering the information about such geographic locations and estimating how much and when data is to be delivered based on the positional relationship between servers and mobile terminals for load sharing.

Abstract: The present invention aims at providing flexible and optimal configuration of an air interface of a transmitter in a radio system, more particularly a mobile radiotelephone system. According to the present invention, the data of a subscriber-specific control channel transmitted by the transmitter is transmitted with an adaptively modifiable frequency position or band width. The subscriber-specific control channel may include pilot symbols for channel evaluation, TCP symbols for power regulation, TFI symbols for transmitting transmission format information and other symbols, wherein the desired frequency position or band width can be individually adjusted for the individual symbol groups.

Abstract: A network processing system is described that is able to monitor IP network traffic, including the ability to perform trap and trace on IP communications flowing over the IP network. The network processing system is able to scan the entire contents of data packets passing through it, and to associate related data packets into discrete sessions, or flows, which allows the network processing system to search for predetermined search criteria contained within those flows. If a flow is found to contain a predetermined search criteria, the network processing system is able to maintain a record of the flow or to replicate the flow and save it or send it to another IP address for monitoring. The monitoring of a flow can include the entire contents of the flow, or any subset of information in the flow such as call identifying information.

Abstract: A method and apparatus i) permit the mobile to set and adjust thresholds that control when and how the mobile reselects a cell, ii) enable the mobile to predict the likelihood of cell reselection and iii) enable the mobile to notify the network when a reselection is highly likely during the course of a packet data transmission, which in turn enables the network to take appropriate action in the assignment of a new cell on which to continue packet data interchange. Alternatively, such reselection may be communicated to a virtual bearer for use in controlling a queue.

Abstract: A method for dynamically allocating a traffic channel element at an extended coverage of a base transceiver station which is divided by a cell site modem (CSM) ASIC in a mobile communication station is disclosed. In case that the call coverage is divided into a normal and an extended regions, the traffic channel element is not set to a pair of the normal and the extended channel elements. Instead, the channel allocation is dynamically allocated according to a channel type which is necessary on a call set up at each of the regions. The method reduces an unnecessary channel allocation and an occupation time of the channel elements, thereby enabling the capacity of the system to be increased.

Abstract: The instant invention discloses a method and system for providing a novel wireless centrex service that untethers subscribers from the immobility associated with traditional desktop telephones. Essentially, the present invention extends the benefits of wireless voice and data services to subscribers having a need to move within a plurality of localities such as business and hospital campuses. In accordance with the invention, a wireless telephone subscriber can use a standard cellular/PCS telephone as a wireless extension of their desktop phone, while in the proximity of a miniature radio base station capable of communicating with the PCS/cellular telephone. The advantage of such a system is that a subscriber can use the same cellular/PCS telephone that provides service in the public network in the wireless centrex environment. Additionally, the wireless centrex system provides services and features which are similar to those offered to regular centrex telephone subscribers.

Abstract: A method and system for servicing data traffic in wireless local area networks (such as IEEE 802.11 networks) in multiple queues having different levels of priority. These queues include at least a low priority queue for ‘best effort’ traffic, a medium priority queue for streaming data such as video pictures, and a high priority queue for voice traffic, and are serviced in order of decreasing priority. To prevent the ‘best effort’ traffic in the low priority queue from being ‘starved’, a bit is set to indicate when such a condition is likely to occur, and the low priority queue is served first when that bit has been set. Alternatively, low and medium priority traffic is handled on a weighted round-robin basis, and high priority traffic is given strict priority over both. Transmit and receive queues are handled on a rotating priority basis.

Abstract: Apparatus and a method employable in a wireless communication network for managing, among plural communication stations in a group of such stations, bandwidth-sharing of available, unused bandwidth.

Abstract: A wireless communication encoding and decoding technique using variable length codes is disclosed. The coding technique defines the transmission time for a high bit in a continuous bit stream as (N×T) expressed in terms of time unit (T), and a low bit as (M×T). By assigning different transmission times to represent high and low bits in continuous bit streams, the total data transmission time can be reduced considerably in handling large amounts of digital data as compared with conventional coding techniques. Other advantages using this coding technique include power saving by the data communication device, which may be a battery-powered peripheral device or mobile unit, and more reliable signal synchronization at both ends of the communication link.

Abstract: Techniques to efficiently attempt acquisition of a packet data system (e.g., an IS-856 system). If a terminal has acquired one or more channels in a voice/data system (e.g., an IS-2000 system), then it can attempt acquisition on channels in the packet data system that are co-located with the acquired channels in the voice/data system. Multiple acquisition modes may be used, and on-going acquisition attempts on the co-located channels may be performed using one acquisition mode at a time in order to reduce power consumption. Acquisition attempts may be performed in a “ping-pong” manner to improve the likelihood of acquisition. For a ping-pong search, an acquisition attempt is made on the most recently acquired channel prior to an acquisition attempt on each of the remaining channels. Received signal strength estimates may also be obtained for selected channels and may be used to determine whether or not to attempt acquisition on these channels.

Abstract: Apparatus, and an associated method, for facilitating frequency offset estimation between communication stations operable in a communication system. A likelihood polynomial is calculated and provided to a filter. The filter forms a filtered representation of the likelihood polynomial, and the filtered representations are down-sampled by a decimator. A sampled, filtered representation of the likelihood polynomial is thereby obtained. The filtered, sampled representation is applied to a root calculator that calculates the roots of the polynomial, thereafter, to be used to compensate for the frequency offset.

Abstract: Methods and systems for distributed arbitration in a push-to-talk communications system are disclosed. A server receives talk requests from user communications terminals in a push-to-talk communications system. The server generates state information based on the talk requests and delivers the state information to the user communications terminals. The user communications terminals execute a distributed arbitration algorithm to determine which user communications terminal should have possession of a communications channel among user communications terminals with simultaneously pending talk requests based on the state information.

Abstract: A method for sharing Walsh codes between at least two mobile stations operating simultaneously in a Control Hold Medium Access Control (MAC) state in Code Division Multiple Access (CDMA), whereby for each respective mobile station, upon entry of the respective mobile station into the Control Hold MAC state, a gating rate 1/x to be used by the respective mobile station, wherein x is greater than one, is determined. A Walsh code being used by less than x mobile stations in the control hold MAC state is identified and allocated to the respective mobile station to thereby define a channel of communication for the respective mobile station.

Abstract: In a method for locating a position of a terminal with use of weak signals, a combined weight to be used to separate a path from others through correlation calculation is obtained from a plurality of delay profiles measured in course of time. The obtained weight is used to combine the delay profiles and a path detection is carried out on the combined delay profiles.

Abstract: A multi-destination transmission method for transmitting a short message to a plurality of mobile terminals at the receiving end is provided. According to the method, a plurality of telephone numbers corresponding to a plurality of mobile terminals at the receiving end is registered in a group. Then, if a request for multi-transmission of the short message is selected after inputting the short message, the short message is simultaneously transmitted to a plurality of the telephone numbers registered in the selected group at the receiving end.

Abstract: A method for localizing a mobile station, which in one embodiment is characterized by: logging one or more wireless channels which belong to one or more network providers other than the mobile station's home network provider and which substantially currently provide communication with one or more discernable base stations; and establishing a geographic position of the mobile station by use of the one or more wireless channels which belong to the one or more network providers other than the mobile station's home network provider.

Abstract: The invention expedites the delivery of a call originating in a circuit-switched network to a mobile terminal camped on a packet-switched network. Information representing the location of the mobile terminal in the packet-switched network is provided to the circuit switched network. A call setup with the mobile terminal is initiated with reference to the previously received location information, frequently more expeditiously and using less resources. Location-based services are also provided by the circuit-switched network with access to such mobile terminal location information.

Abstract: A communications system includes a dual mode mobile station and a home base station. Dual mode mobile station is operable selectively in CDMA and analog modes. Home base station includes circuitry for establishing wireless communications with mobile station in the analog mode, and circuitry for establishing communications with a wireline communications system, the base station allowing an exchange of information between mobile station and wireline system in the analog mode.

Abstract: The invention relates to a radio access network (RAN) for a mobile radio communications system and to an operating method therefor. The radio access network has a number of first nodes (UPS1, UPS2,), which are each assigned to a subarea (A, a) of a geographical area, and which serve for exchanging useful data between terminals (UE), which are located in the relevant subarea, and a primary network (CN). The radio access network also has at least one second node (RCS1, RCS2), which comprises a number of signaling functionalities (UEF) for exchanging signaling data with the each respective terminal (UE). The second node (RCS1, RCS2, . . . ) is connected to a number of first nodes (UPS1, UPS2, . . . ) in order to exchange signaling data with a terminal (UE) via those first nodes (UPS1, UPS2, . . . ) with which this terminal (UE) exchanges useful data.

Abstract: A system and method for managing wireless communications system resources. The system includes a first mechanism that determines currently available wireless communications system traffic resources and provides a signal in response thereto. A second mechanism de-allocates wireless communications system supplemental resources and reallocates the supplemental resources as traffic resources in response to the signal. In a specific embodiment, the currently available wireless communications system traffic resources include currently available traffic channels, and the supplemental resources include supplemental channels. The first mechanism includes a mechanism that compares a number of in-use traffic channels with a number of total traffic channels and provides the signal when the difference between the number of total traffic channels and the number of in-use traffic channels is less than a predetermined threshold.

Abstract: A cellular network monitors the location of a wireless transmit/receive unit (WTRU). The cellular network is also aware of the location of each data pump capable of communicating with the cellular network. The data pump capable of transmitting data at a high data rate. The cellular network coordinating a high data rate transfer between the WTRU and the data pump.

Abstract: The present invention is directed to the prevention of invalid access and inappropriate information transfer by limiting the accessible range to the information resource on a radio network. In one embodiment, a method of providing access to an information unit by a wireless unit comprises providing a first position information containing an access enabled area for the wireless unit, wherein the access enabled area falls within a range of communicable area of a wireless access point; and obtaining a second position information containing a current position of the wireless unit. If the current position of the wireless unit is within the access enabled area for the wireless unit, access if permitting to the information unit by the wireless unit.

Abstract: A method and a system for seizing at least one communication channel for use in a first call. Information on a plurality of states of a plurality of communication channels are held in an channel-state-information holding unit. Based on the information on the states of the communication channels, at least one optimum communication channel from among the plurality of communication channels is determined as the at least one communication channel, and seized for use in the first call. The determination is made so that after the above determination and seizure for the first call, consecutive communication channels for use in a second call can be successfully seized with high probability.

Abstract: A method and system for transmitting data with reduced message instances is disclosed. A wireless message network uses destination identifiers and message pointers to direct message data to multiple mobile units and avoid duplication of messages. In order to provide increased efficiency in the case of duplicate messages, a pointer to a message may be associated with multiple destination identifiers.

Abstract: A data transmitting and receiving method between a mobile terminal and an information center in a navigation system is disclosed. The present invention is characterized in that if lower items of a destination are not received from the information center in the middle of receiving destination setting items to set the destination after the mobile terminal transmits a destination setting request message to the information center, the mobile terminal sends a reconnection request message and stored destination setting data.

Abstract: The invention relates generally to a method and an arrangement for transferring information in a packet radio service. Especially the invention applies to transferring delay sensitive data, such as speech and video data, in a mobile telecommunications system. It is an object of this invention to provide a solution, in which the physical connection of a packet radio service is kept reserved also during the passive periods of a session but the same physical resource can still be shared between multiple users. A basic idea of the invention is that the network is informed at the end of an active period, on whether a passive period follows the active period or if the connection can be released. When an active period starts after a passive period, the connection preferably reserves the packet data channel again, and possible other users of the channel are assigned to other channels.

Abstract: The invention is a system and process for the transmission of data packets on a reverse link between a mobile station (MS) and cells (a and b).

Abstract: The object of the invention is to provide a mobile unit communication apparatus that can also efficiently acquire required information from another mobile unit in a place where multiple mobile units gather. To achieve the object, an identification code corresponding to a traveling azimuth of a mobile unit where a mobile unit communication apparatus is mounted is added to an information signal to be transmitted and the information signal is transmitted, an incoming information signal transmitted from another mobile unit is received and the information signal from another mobile unit is processed according to a traveling azimuth shown by an identification code added to the received information signal from another mobile unit.

Abstract: The invention relates to the transfer of a message signal between a transmitter device and a receiver device wherein the message transfer is based on a predefined signal frame structure using a concrete syntax notation. To improve the reliability of transferring a message signal, in particular, control and/or signaling messages, at least one additional check information element is embedded within at least one unused portion of the frame structure.