Abstract: The present invention is to provide a radio system that enables effective reuse of a limited number of frequencies without the occurrence of interference between subscriber stations. In the radio system according to the present invention, each base station is divided into two or more sectors, each of which is provided with an antenna different in directivity on a horizontal plane. The antennas are so placed that the antenna beams cover all the directions on the horizontal plane as a whole, and all the antennas using the same frequency and polarized wave are so arranged to face in about the same direction.

Abstract: In a cellular radio system (30) the terminals (35) are arranged to set up and maintain radio communication with the base stations (31, 32, 33, 34) in the cells (31a, 32a, 33a, 34a). Regarding the setting up and maintaining of radio communication at least one terminal (35) is arranged to favor at least one cell (32a, 33a) with respect to other cells (31a, 34a), in a manner independent of other terminals. The priority data relating to a terminal are stored in a central database (37), from which they are transmitted to the terminal when it registers.

Abstract: Disclosed is a system and method for channel allocation in a multi-band wireless network. The system includes microcell base stations, at least one macrocell base station, a mobile station, and a channel allocation center. When the mobile station makes/receives a call or executes a handover, the channel allocation center uses repacking on demand (RoD) scheme to allocate a radio channel of either a macrocell base station or a microcell base station to the mobile station. RoD has the following steps. First, a microcell channel is trying to be allocated if available. If no microcell channel is available, a macrocell channel is then trying to be allocated. Third, if no macrocell channel is available, repacking is performed to execute a handover of another mobile station's call from the macrocell to another microcell, and to allocate a reclaimed macrocell channel to the mobile station. Otherwise, no repacking call is available and the mobile station is blocked or forced terminated.

Abstract: A control technique for a communication system in which a microcell base station is co-located with a macrocell base station. The microcell base station tracks hot spots as they move within the macrocell. The microcell base station may utilize a two-dimensional (2-D) antenna array, which is co-located with the macro cell antenna. The two-dimensional antenna is steerable in both the horizontal and vertical directions. The size of the microcell coverage area depends upon the distance from the cell site antenna as well as the dimensionality of the array, which determines the angular spread of the beam. Filter tap weights may be adjusted to point the beam to any desired location in the macrocell. The orthogonality between the macrocell and the microcell may be obtained either in the frequency domain or in the code domain, depending upon the system in which it is implemented.

Abstract: A base station apparatus corresponding to a first base station apparatus of base station apparatuses and connected to terminal apparatuses, first base station apparatus transmitting and receiving first packets with respect to a second base station apparatus corresponding to another of base station apparatuses and transmitting and receiving second packets with respect to terminal apparatuses, first base station apparatus transmits a third packet to second base station apparatus, third packet corresponding to one of first packets to be transmitted from first base station apparatus and including a first data item, second base station apparatus recognizing by first data item that first base station apparatus is one of base station apparatuses, third packet being used through an authentication process or an association process for connecting in wireless first base station apparatus to second base station apparatus.

Abstract: A method of selecting one or more active slave wireless devices from a plurality of active/parked slave wireless devices is implemented by a master wireless device. The master wireless device initially assigns sequential weights to each active/parked slave wireless device, and subsequently designates one or more of the active/parked slave wireless devices as active slave wireless device(s) based partially or entirely on the assigned sequential weights. The assignment of sequential weights can be accomplished by assigning each active/parked slave wireless device to one of a plurality of ranked groups collectively representative of various traffic types between a base site and the active/parked slave wireless devices. Each active/parked slave wireless device is then sorted within its respective group.

Abstract: A plurality of wireless transceivers are associated with assets and each transceiver is assigned a class designation representative of an attribute, characteristic, relation, or behavior of its respective asset. Class based network formation routines are utilized to establish hierarchical networks based on asset classes, and the asset class is used by each transceiver to screen communications intended for receipt by transceivers of the same class. The overall wireless data communication network results in reduced power consumption and signal interference in asset-tracking applications. The transceivers may include a query handling routine for forming a dynamically distributed hierarchical database system.

Abstract: Transmission and reception device for a mobile radio base station comprising a plurality of transmission and reception units and hence a plurality of carriers, the transmission and reception units being accommodated in push-in modules and each having a modulator (10), a channel frequency device (19) and an output stage (20). At least some of the push-in modules comprise two full transmission and reception units having a first and a second transmission branch (1, 2). The two transmission branches (1, 2) are connected to a transmission connection (4) via an incorporated hybrid combiner (3) in order to provide two mutually combined carriers in a first mode of operation for relatively high capacity. In a second mode of operation for high output power, the two transmission branches (1, 2) are additionally connected to one another by means of an internal changeover device (25, 26, 27) such that the same transmitted signal is routed at least via the output stages (20) of both transmission branches (1, 2).

Abstract: A method and system for changing a subscriber profile on the basis of the detected or known identity of the base station currently serving the terminal equipment of that subscriber in a mobile communication network. A permanent and unique identity parameter or designation is created and assigned to each base station of the network, and is broadcast by each respective base station to all subscriber terminal equipment currently in its communication coverage area or region. Changing of the subscriber profile on the basis of subscriber movements within the network is accomplished with enhanced flexibly and ease and at lower cost than heretofore possible.

Abstract: A cellular network configuration tool is described that performs frequency assignments for use in a cellular network. The channels are assigned in accordance with input configuration data such as a channel separation matrix, geographic data, and requested channel assignments for each sector included in the cellular network being configured. The configuration is performed in accordance with predetermined constraints and criteria and quality of service input. The tool uses frequency assignment techniques to perform the channel assignments in accordance with varying constraints and criteria.

Abstract: A communication system. The communication system communicates to a number of subscribers. The communication system includes a number of communication circuits which are disposed to divide a region into communication areas. Each communication circuit communicates using a first polarization in a first portion of its communication area and communicates using a second, different polarization in a second portion of its communication area. Additionally, adjacent portions of the communication areas of the communication circuits use the same polarization.

Abstract: This is a method and system for determining an enhanced cell coverage locating a mobile terminal in a cellular mobile communication system. The overall range of the mobile communication system is divided into a plurality of pixels, and then a pixel map including all pixels is constructed. One antenna with a shortest distance to each pixel is set as a serving antenna, and the nearest antenna to a pixel is found. This pixel then belongs to the cell of this antenna, in which the distance therebetween is smallest and all pixels belonging to a cell constitutes a pixel coverage of this cell. A rectangular area is then constructed covering the pixel coverage, and a smallest circle cover this rectangular area is constructed as the enhanced cell coverage of the antenna. Thereby, the system provider may provide require information to the mobile terminal in that coverage.

Abstract: A controller (102) in a fixed network of a wireless data communication system (100) transmits an indication that a diversity transmission of the information stream is available. When predetermined capabilities of a user equipment (112) and the fixed network are sufficient to allow soft combining of a primary transmission and the diversity transmission of bits of the information stream in the user equipment, the controller further transmits primary and diversity transmissions in a manner that facilitates soft combining in the user equipment, and transmits a group identity of the information stream to indicate that the information stream is in the primary and diversity transmissions.

Abstract: A method for determining the co-location of cell sites includes the steps of acquiring a neighbor cell list (602), monitoring the neighbor cell sites for longitude and latitude information (604). Te longitude and latitude information is used fo calculating the distance and bearings between the serving and neighbor cell sites (606 and 608). Neighbor cell sites having similar bearing and distances are grouped together (610), if grouped neighbors are in close proximity, the centroid of a polygon formed by the sector vertices is determined (614) and new latitude and longitude information for the centorid is determined (616). The neighbor cell list is then modified to indicate sectored versus omni-directional sites (620) and the information is then used by the communication device to make better mobility decisions.

Abstract: A cellular communication system is provided. According to one embodiment, the communication system includes at least one cell. The at least one cell is defined by a coverage layer defining a coverage of the at least one cell and a capacity layer at least partly defining a capacity of the at least one cell.

Abstract: Providing a wireless communication device that, even if clock stop of a radio frequency part is controlled by a baseband part operating on the same clock signal, can resume clock oscillation, and makes it easy to time the clock reactivation to other operations based on a shared clock. The wireless communication device comprises an RF part generating a first clock signal and a baseband part. The baseband part generates a second clock signal, controls the generation and stop of the first clock signal, uses the first clock signal to perform data processing and a clocking operation, and in a low power consumption state in which the first clock signal is stopped, uses the second clock signal to perform a timer operation and a clocking operation. The generation timing of the first clock signal can be generated by the timer operation using the second clock signal.

Abstract: Systems and methods, employed with data networks, for example, cellular networks, that provide dynamic awareness of: a) shared media or cell resources; and b) link-specific disturbances, are disclosed. The systems and methods (processes), and portions thereof, operate dynamically and “on the fly”. As a result, the systems and methods can control data flows (at various rates) through the shared media, allowing for transmissions, for example, of packets, at optimal bandwidths (bit rates), while maintaining existing protocol structures.

Abstract: A method for gradual expansion of a cellular network comprising the steps of: A. Creating a plurality of new, smaller cells within an existing, larger cell, wherein each new cell is randomly located; B. integrating each of the new cells within the existing cellular network by connecting it to the cellular network infrastructure; and C. giving priority in connecting mobile users through one of the new cells' base stations, by transferring calls from the existing base station to a new base station, whenever possible. In a cellular network system, an add-on base station comprising transmitters, receivers and a controller, wherein the controller includes means for listening to the cellular traffic and for allowing the base station to take control according to predefined rules.

Abstract: A wireless communications system and method is disclosed. A cell has a plurality of allocated sectors and a base station that communicates with mobile units contained within the cell. The base station has a transmitter that transmits communication signals along at least two carriers per sector within a cell. Each carrier within a sector is assigned a zone spaced from the base station, such as from an inner zone to an outer zone. The power per carrier is reduced successively from the outer to the inner zone.

Abstract: In a system handling communication between base transceiver stations (BTS1-BTS12) and base station controllers (BSC) of a cellular radio network the transmission capacity is composed of a predetermined number of capacity units (T0-T31). At least one capacity unit (TCH) can be allocated to a given base station group which comprises at least two base transceiver stations. Said capacity unit is allocated to a certain base transceiver station in the base station group when the instantaneous volume of traffic handled by said base transceiver station requires temporary allocation of additional capacity, and said capacity unit is again released so as to be allocatable to the base station group when the instantaneous volume of traffic handled by said base transceiver station no longer requires temporary allocation of additional capacity.

Abstract: Apparatus, and an associated method, for facilitating exchange of configuration indicia associated with a mobile node operable in a radio communication system. The mobile node is dynamically-configurable, and includes a DevMan tree. The indicia is provided to a network manager responsive to request therefore or upon initiation by the mobile node. When initiated at the network, a request message generator located at a network manager generates a Get message to request a root directory of the be provided to the network manager. The mobile node, upon delivery of the Get message thereto, retrieves an object map of the DevMan tree, defines it using recursion in a single response message, and sends the object map to the network manager.

Abstract: A location managing method for managing a location of a mobile station in a mobile wireless packet communication system in which each of communication nodes down to a base station have a hierarchical structure, wherein a route from a communication node positioned at a highest layer of the hierarchical structure to a base station of a cell in which a mobile station is located, is managed as location information of the mobile station, by being distributed to the communication node located at the highest layer of the hierarchical structure and to each of communication nodes in the route to the base station.

Abstract: A method for providing a multicast service from a macrocell or a microcell to a mobile station in a mobile communication system having a hierarchical cell structure in which a given area is divided into at least one macrocell and at least one microcell overlapping with each other. The mobile station receives a multicast service by accessing the macrocell or the microcell according to a carrier-to-interference ratio (C/I) for the multicast service measured in a macrocell area and according to an existence or non-existence of a concurrent call currently in service. When there is no concurrent call currently in service, the mobile station receives the multicast service by accessing the macrocell in an area where the measured C/I is equal to or greater than a required C/I. However, when there is a concurrent call currently in service, the mobile station receives the multicast service by accessing the macrocell or the microcell based on the current cell and the C/I.

Abstract: In a hierarchical cell structure, the parameter for setting a signal strength threshold which determines the selection of serving cell, along with the preference rating of umbrella macrocells, microcells and picocells in a cellular telephone system, is related to a quality criteria, such as speech quality. The “sufficient signal strength” threshold is automatically tuned according to the quality criteria thereby avoiding the need for expensive, time consuming manual adjustment of this parameter.

Abstract: The method consists in the use of the average network traffic data and a series of measurements taken within a part of a network, along with the recording of the signals, received from all base stations within reach of a given point. The measurement area is divided into polygonal sections, relating to specific P measurements and the total area of such section represents the weight of a given measurement. Subsequently, based on the most powerful signal criterion, individual P measurements are assigned to specific network cells. Further on, the based on the differences between signal power value calculated, measurement weights and the assumed distances between channels, values of certain formulae are calculated, which then provide the basis for determination of the minimum distances between channels.

Abstract: A virtual cell management apparatus and method using sectors in an orthogonal frequency division multiplexing mobile communication system including a cell structure having cells each comprised of a plurality of sectors, the cells performing data communication with mobile terminals within a corresponding cell through at least one subchannel having orthogonality.

Abstract: Techniques for searching neighbor cells within a fixed time duration are disclosed. In one embodiment, cells in a monitored list are ranked. A first subset of the ranked cells are searched during each cycle in a series of cycles, and a subset of the remainder of ranked cells is searched in each cycle, the subset varying from cycle to cycle. In another embodiment, the ranking and searching of a subset of the ranked list of cells is performed when the number of monitored cells is greater than a pre-determined search number. In yet another embodiment, the complete list of monitored cells is searched when the number of monitored cells is less than or equal to a pre-determined search number. In various embodiments, the searching comprises one or more of intra-frequency, inter-frequency, or inter-RAT searching. Various other embodiments are also presented.

Abstract: A method for performing a cell reselection in a system comprised of a hierarchy of cells, wherein cells of one layer of the hierarchy have a size that differs from cells of another layer of the hierarchy. The method includes steps of (a) identifying to a user equipment a layer to which individual cells in a neighbor cell list are associated; (b) when performing neighbor cell measurements for reselection purposes, avoiding a measurement of cells in the list that are larger than a current serving cell unless a Cell Selection (S) parameter falls below a search threshold parameter (Ssearch), and is greater than zero; and (c), if S is less than or equal to zero, and no cell reselection to a better cell is in process, beginning a measurement of neighbor cells without regard for their hierarchical level. If the user equipment has made cell reselection to N different cells on the same hierarchical layer within a time Tmax, the user equipment initiates a reselection procedure for larger neighbor cells.

Abstract: A method of forming an ad hoc hierarchical communication network involves associating a plurality of wireless transceivers with articles, and assigning to each of the transceivers a class designation representative of a characteristic or behavior of the article with which the transceiver is associated. A network organization routine of the wireless transceivers operates to establish the hierarchical network based on the transceivers' class designations, resulting in a logical network organization that provides efficiencies for asset tracking. Each wireless transceiver's class designation is used by a digital processor of the wireless transceiver to selectively receive packets intended for receipt by transceivers of the same class. The class-based network reduces power consumption and signal interference, which increases battery life in the wireless transceivers.

Abstract: In a mobile communication system, a mobile switching center 27 changes a transmission rate of communication data transmitted from a mobile station 16 and so on to a database 11 or a transmission rate of communication data transmitted from the database 11 to the mobile station 16 and so on, on a basis of a request from the mobile station 16 and so on or the database 11, individually and independently.

Abstract: A short-range radio transmitter of a communication device comprising a short-range radio and a long-range radio is controlled to delay packets which are scheduled to be transmitted at the same time as a long-range transmitter of the long-range radio commences or discontinues to transmit. A frequency synthesizer of the short-range radio is thereby not affected by a change in the power supply voltage which otherwise occurs at these moments due to transmission with high power by the long-range transmitter.

Abstract: Techniques are described for splitting a base transceiver station into digital and rf functions. With relatively low cost simulcasting clusters of rf remotes located to define coverage areas and master base transceiver stations connected to the rf remotes by suitable wireline connectors, such as Ti lines, the bulk of the digital functions can be located anywhere that is desired. Numerous, small, low cost, low power rf remotes may be advantageously mounted on existing structures such as light poles, telephone poles, and the like to achieve desired areas of coverage cost effectively and with a high degree of flexibility with respect to meeting future increases in need for additional capacity.

Abstract: The communique system for cellular communication networks that operates with existing cellular communication networks to provide communique communication services to subscribers. The Communique can be unidirectional (broadcast) or bidirectional (interactive) in nature and the extent of the Communique can be network-wide broadcast or narrowcast, where cells and/or cell sectors are grouped to cover a predetermined geographic area or demographic population or subscriber interest group to transmit information to subscribers who populate the target audience for the narrowcast transmissions. The grouping of cells to form the communique coverage area for the narrowcast transmissions can be hierarchical, using combinations of in-building wireless coverage areas, standard terrestrial cells, non-terrestrial cells, orchestrated in a hierarchical manner. The content of these transmissions can be multi-media in nature and comprising a combination of various forms of media: audio, video, graphics, text, data and the like.

Abstract: A communication system comprising a first communication node connected to a second communication node by a wireline for integrating parallel layers of wireless communications for exchange with users. The first communication node comprising a free-space laser device, a first wireless system, and a first wireline device, and a second communication node comprising a second wireless system and a second wireline device.

Abstract: A method and an apparatus for protecting contents transmitted between mobile phones and a method of operating the mobile phones are provided. The method includes the first terminal encoding a predetermined channel key and transmitting the encoded channel key to the second terminal, the first terminal encoding communication contents using the channel key and transmitting the encoded communication contents to the second terminal, and the second terminal decoding the encoded channel key using the decoded channel key second terminal and decoding the encoded communication contents.

Abstract: A mobile device includes a communications subsystem by which data can be sent/received via the wireless-based communications infrastructures of localized communication hotspots traversed by the mobile device. To facilitate such transfers, the predicted track of the mobile device is used to determine what hotspots are likely to be traversed by the device. Communication resources of these hotspots are then managed to ensure that the device has appropriate utilization rights and/or bandwidth reservations for its data transfer needs.

Abstract: Disclosed herein is a method of allocating a channel in a cell of a cellular network. The network includes a cell and a plurality of other cells. The method includes receiving in the cell, a plurality of signals from at least one other cell and determining the average signal strength and the standard deviation for the signals. The method also includes adding the average signal strength to the standard deviation to obtain information and using the information to determine one or more channels to be used in the cell.

Abstract: In a cellular communication network (20) employing a network planning tool (38), a method (42) and system (48) associate servers (22) with pixels (74) that correspond to locations in an actual cellular environment. When the server (22) resides in a proximity region (88) surrounding a pixel (74) at which a radiofrequency signal (90, 102) is detected, that server (22) is associated with the pixel (74). When no servers (22) reside in the proximity region (88), a server (22) is selected in response to power levels (124, 128) of the detected radiofrequency signals (90, 102) at the pixel (74). When a computed power difference between the power levels is below a power difference threshold, the server (22) is selected for association with the pixel (74) in response to a random selection procedure.

Abstract: A system for allocating a resource to a terminal in a cellular mobile radio network in which each cell of the network is identified by a primary color and a secondary color which correspond to transmission frequencies allocated to it, namely and respectively a set of primary frequencies (FP) and a set of secondary frequencies (FS) whose rate of re-use is higher than that of said primary frequencies (FP), and the terminal is connected to a local cell (A1). The system knows a potential level of interference (N) received by the terminal and allocates said resource to said terminal on a primary frequency (FP) or on a secondary frequency (FS) according to whether said potential level of interference (N) is respectively above or below a first distribution threshold (S1).

Abstract: A first group of terminals at a first range from base station is instructed, e.g., by transmitted timing advance values, to time their transmissions to arrive at a base station in synchronism with a first series of frames. A second group of terminals at a second range is instructed to time their transmissions to arrive at the base station in synchronism with a second series of frames that is time-offset with respect to the first series of frames. Transmissions from the first and second groups of terminals are, received at the base station in synchronism with the respective first and second series of frames. The transmissions from respective first and second groups may be received on respective separate carrier frequencies, or may be multiplexed on a common carrier frequency.

Abstract: A method for determining a coverage area according to antenna patterns in a sector base station system provided that the antenna gain of the omni base station is identical to the antenna gain of the sector base station. The method includes the steps of calculating the ratio of the coverage area of the sector base station to the omni base station, calculating the coverage area of the omni base station considering a handover area, and multiplying the calculated ratio of coverage area of the sector base station by the calculated coverage area of the omni base station, to determine the number of base stations required in designing the wireless network by the operator.

Abstract: A method for sending data in a mobile ad-hoc network may include a plurality of nodes grouped into clusters of nodes and a plurality of wireless links connecting the plurality of nodes, where each cluster node has a designated cluster leader node. The method may include sending a cluster-level route request from a source node of a source cluster to a cluster leader node of the source cluster, and determining a cluster-level route through the source cluster and a destination cluster including a destination node responsive to the cluster-level route request and using a plurality of the cluster leader nodes. Furthermore, the method may also include determining node-level routes through each cluster along the cluster-level route to a cluster target node in a next cluster along the cluster-level route. Recovery for cluster-level and node-level routing errors/failures is also provided.

Abstract: A communications system comprising a first plurality of cells operating in accordance with a first mode and a second plurality of cells operating in accordance with a second mode, each of said cells being served by a respective first station, at least one second station arranged to establish a connection with at least one first station, said at least one second station being associated with said first plurality of cells or said second plurality of cells during said connection and means for determining which plurality of cells said second station is associated after said connection has been completed.

Abstract: A cell handover method and cellular radio system includes at least one indoor subscriber terminal (100) and cells (31 to 38) with operating area of each being confined to the interior of a building, and at least one outdoor cell (11) whose operating area extends from the exterior to the interior of the building, and in which cellular radio system the cell serving the subscriber terminal (100) will be changed, characterized in that the radio system is configured for cell handover in such a way that cells (31 to 38) are grouped into cell groups with a gateway cell (21 to 24) provided around each group, and with one gateway cell (21) provided at the entrance of the building, the gateway cell (21 to 24) surrounding the cell (31 to 38) is entered on the neighbor list of each cell (31 to 38), other gateway cells (22 to 24) and an outdoor cell (11) are entered on the neighbor list of the gateway cell (21) provided at the entrance, and the gateway cells (21 to 24) are entered on the neighbor list of the outdoor cell

Abstract: A system, method, and apparatus for performing a handover for mobile station are presented. Where a mobile station in a preexisting cellular network approaches the service area of a next generation network, the serving base station transmits a cell neighbor list to the mobile station. The cell neighbor list includes nearby base stations within the preexisting cellular network as well as the next generation network. The mobile station can then measure the signal strength on the handover measurement channels of the cells in the next generation network. A method and associated apparatus for measuring the handover measurement channels of base stations in a next generation network using Code Division Multiple Access (CDMA), are also presented.

Abstract: An enhanced clutter database and modeling tool are provided for use in determining the propagation characteristics and requisite transmitted signal strengths for physical regions having attenuating objects therein. The enhanced clutter database supports a plurality of different resolution levels and can therefore be used to adjust transmission requirements for both large and small coverage areas. A plurality of bins and sub-bins are defined and values provided for in the enhanced clutter database to further distinguish clutter types within portions of the coverage area. Adjustment of the transmission requirements can be manually initiated or automatically conducted using the enhanced clutter database. The enhanced clutter database is populated by fusing geographical data with more detailed supplemental physical environment data provided by one or more data collection services.

Abstract: Systems and methods are described for wireless communications. A method includes providing a wireless communications system having narrow cast bi-directional internet channel capability and defining a substantially nonconflicting regional overlay, then transmitting a downstream signal from a downstream transmitter to a bi-directional transceiver; and transmitting an upstream signal from the bi-directional transceiver to an upstream receiver through the substantially nonconflicting regional overlay. The narrow cast bi-directional internet channel capability and the non-conflicting regional overlay define an upstream area that overlies a plurality of smaller downstream areas. The systems and methods provide advantages because additional capacity can be provided within a saturated region without incurring interference and additional capacity can be provided only in the direction in which it is needed.

Abstract: In a wireless communications service where the service area is divided into multiple cells, a common workstation (COWS) is connected to multiple cell workstations (CEWSs) in hierarchial relation to realize the service. The COWS performs call processing and other tasks common to all cells served by the CEWSs. The latter perform call setups, paging message distributions, and other cell specific operations. First and second central processing unit (CPU) overload control routines are run on the COWS and each CEWS, respectively, to manage their CPU loads. Specifically, different defense actions may be applied by the first and second routines to alleviate the CPU loads of the COWS and CEWS, respectively. These defense actions include COWS's dropping a fraction of paging messages to be processed thereby, and CEWS's dropping a fraction of paging messages, short message service (SMS) broadcast messages and radio frequency (RF) signal strength messages to be processed thereby.

Abstract: A method and device for preventing toggling between two zones of a wireless communications network employ first and second adjacent cells respectively offering services of first and second different zones. The mobile unit determines if the second zone is more preferable than the first zone when the mobile unit hands off from the first cell to the second cell. If the second zone is less preferable than the first zone, the mobile unit does not switch to the second zone within the second cell. If the second zone is more preferable, the first zone is maintained within the second cell until the signal strength of the second cell exceeds the signal strength of the first cell by an amount determined by an exit parameter. At this point, the mobile unit switches to the services of the second zone.

Abstract: The present invention relates to a method in a cellular mobile communication system for transmitting Pages, and such a system. The cells of the system are subdivided into two classes. To which class a cell is assigned is decided by its capacity to transmit Pages or by the amount of Page responses received within the cells. When paging a mobile station, the Page is first transmitted in the cells of the first class. If no response is received to that Page, the Page is transmitted also in the cells of the second class. An advantage is that there will be fewer Pages congested due to lack of capacity for transmission. Transmitted Pages in the cells of the second class are primarily transmitted to mobile stations that are really present within those cells. Thereby the probability increases that all mobile stations will be reached by Pages intended for them.