Zum Herstellen einer Verbindung zwischen einem an ein Fernsprechnetz angeschlossenen ortsfesten Teilnehmer (T1) und einem mobilen Teilnehmer (T2) werden Rufsignale über eine Rufzentrale (RZI und eine Erdfunkstelle (EFSt) sowie einen Satelliten (SAT) zu mehreren über ein Gebiet verteilten Sendeempfängern (SE) geleitet. Von wenigstens einem dieser Sendeempfänger (SE) werden sie zum mobilen Teilnehmer (T2) abgestrahlt. Dadurch werden störende Laufzeitänderungen auf nun nicht mehr benötigten Modulationszubringerleitungen zwischen der Rufzentrale (RZ) und den Sendeempfängern (SE) ebenso vermieden wie durch solche Laufzeitänderungen hervorgerufene Interferenzstörungen beim gleichzeitigen Empfang zweier einander benachbarter Sendeempfänger. Diese können daher alle auf derselben Trägerfrequenz (f₃) und gleichzeitig arbeiten. Anwendung bei landesweiten Rufsystemen und zum Verbindungsaufbau zwischen einem Funktelefon und einem ortsfesten Telefonnetz.

Embodiments of the present application provide a method and apparatus for calculating a paging occasion under an extended paging cycle. The method includes: calculating a frame number (SFN) where a paging message occurs by user equipment (UE) by using a formula SFN mod T = (T div N) * (UE_ID_extended mod N) ; calculating a subframe number (i_s) where the paging message occurs by the UE by using a formula i_s =flood (UE_ID_extended/N)mod N_s; and determining by the UE a paging occasion of the UE under an extended paging cycle by using the frame number and the subframe number where the paging message occurs; where, T is a paging cycle of the UE, which is equal to a specific discontinuous reception (DRX) value of the UE; UE_ID_extended = IMSI mod (1024 · 2ⁿ), UE_D_extended being an identity index of the UE, IMSI is an international mobile subscriber identity of the UE, and n is the number of bits of an extended SFN; N = min(T,nB) ; N_s = max(1, nB / T) ; and nB ∈ {4T,2T,T,T/2,T/4,T/8,T/16,T/32} . With the method and apparatus of the embodiments of the present application, a good solution is provided for calculating a paging occasion under an extended paging cycle.

Systems and methods are described that facilitate improving paging signal strength at or near sector perimeters in a wireless network region by transmitted identical paging waveforms simultaneously from all sectors in the region and permitting over-the-air signal aggregation to combine signal energy near sector perimeters. Waveforms can be modulated using an orthogonal frequency division multiplexing technique and can be simultaneously transmitted according to predefined transmission resources over a multi-sector broadcast paging channel reserved for such identical waveforms. Cyclic prefix can be added to the identical waveforms to mitigate problems associated with delay spread and/or time-of-arrival differences at or near sector perimeters.

Systems and methods are described that mitigating coverage gaps near region boundaries using a plurality of multi-sector broadcast (MSBC) paging channels in wireless networking environments. One or more MSBC paging channels can be assigned unique time slots, such that although the channels can be identical, they are disjointed in time. Accordingly, such channels and/or dynamically generated paging zones associated therewith can be overlapped in areas where wireless device density is high and requires substantial paging capacity. Additionally, a single paging channel can be employed in multiple instances in a paging region without overlap to mitigate inter-channel interference.

Systems and methods are described that facilitate improving paging signal strength at or near sector perimeters in a wireless network region by transmitted identical paging waveforms simultaneously from all sectors in the region and permitting over-the-air signal aggregation to combine signal energy near sector perimeters. Waveforms can be modulated using an orthogonal frequency division multiplexing technique and can be simultaneously transmitted according to predefined transmission resources over a multi-sector broadcast paging channel reserved for such identical waveforms. Cyclic prefix can be added to the identical waveforms to mitigate problems associated with delay spread and/or time-of-arrival differences at or near sector perimeters.

A location information management system includes at least one mobile terminal (50), a plurality of relay stations (40-1...40-3), and a location information management server (20). The location information management server (20) multicasts a message for inquiring a location of a predetermined mobile terminal (50) to the plurality of relay stations (40-1...40-3) when location information of the mobile terminal is required.

The present invention concerns a method for determining a tracking area of a wireless cellular telecommunication network comprising plural tracking areas, each tracking area comprising plural cells in which mobile terminals are located, at least two tracking areas comprising cells comprised in the at least two tracking areas and cells belonging to a single tracking area, each cell being managed by a base station of the wireless cellular telecommunication network. One base station managing a cell comprised in the at least two tracking areas executes the steps of:

- transferring a message to at least a mobile terminal comprised in the cell managed by the base station, the message comprising the identifiers of the at least two tracking areas in which the cell managed by the base station belongs to,

- receiving a message from the mobile terminal, the message comprising one single identifier among the identifiers transferred to the mobile terminal, the identifier being the identifier of the tracking area selected by the mobile terminal.

A system for handling paging messages from a Mobile Switching Center (MSC) to a set of cells in a cellular communication network including radio base stations (BTS) serving said cells. Each paging message refers to a respective Location Area, and the radio base stations act under the control of a Radio Access Network (RAN) controller. The Radio Access Network (RAN) controller is configured for receiving a paging message from the Mobile Switching Center (MSC) and performing replication of the paging message received at the base station level. The paging messages are thus sent to all the base stations belonging to the Location Area referred by the paging message.

The invention relates to a method for delivering a multimedia message to a mobile station (M1) in a cellular wireless environment, said environment including a plurality of base stations (B1to B4) whose cell coverage (C1 to C4) overlaps in determined overlapping regions (A to E) and form a location area (LA), and a base station control element (BC1) in charge of transmitting said multimedia message from a core network switching element (RC1) to said base stations (B1 to B4), wherein upon reception of a location update message from the mobile station (M1) when entering said location area (LA), the base station control element (BC1) selects the base stations (B1,B2) whose cells (C1,C2) are likely to overlap the region (A) where the mobile station (M1) is located and co-ordinates said base stations (B1, B2) to simultaneously transmit the multimedia message to said mobile station.

It also relates to a cellular wireless system and a base station control element (BC1) for transmitting a multimedia message according to the method above.