GB2404115A - Selectively processing cell broadcasts on a mobile communication device - Google Patents

Selectively processing cell broadcasts on a mobile communication device Download PDF

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Publication number
GB2404115A
GB2404115A GB0316535A GB0316535A GB2404115A GB 2404115 A GB2404115 A GB 2404115A GB 0316535 A GB0316535 A GB 0316535A GB 0316535 A GB0316535 A GB 0316535A GB 2404115 A GB2404115 A GB 2404115A
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cell broadcast
cell
means
selectively processing
unit
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GB0316535A
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GB2404115B (en
GB0316535D0 (en
Inventor
Prashant Agarwal
Donald Power
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NEC Technologies UK Ltd
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NEC Technologies UK Ltd
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Priority to GB0316535A priority Critical patent/GB2404115B/en
Publication of GB0316535D0 publication Critical patent/GB0316535D0/en
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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/02Details
    • H04L12/16Arrangements for providing special services to substations
    • H04L12/18Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/189Arrangements for providing special services to substations for broadcast or conference, e.g. multicast in combination with wireless systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02Services making use of location information
    • H04W4/021Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences

Abstract

An apparatus for selectively processing a cell broadcast received by a mobile communication device comprises means for determining the geographic coordinates of the mobile communication device 400, means for receiving a cell broadcast 410, means for determining whether the cell broadcast identifies a geographical area to which it is relevant 420, means for comparing the geographic coordinates of the mobile communication device with the geographical areas defined identified in the cell broadcast 440, and a means for processing the cell broadcast in dependence on the coordinates of the unit falling within the area identified in the cell broadcast 430.

Description

24041 1 5 An Apparatus for Selectively Processing Cell Broadcasts on a

Mobile Communication Device The present invention relates to an apparatus for selectively processing cell broadcasts (CB) on a mobile communication device.

The short messaging service (SMS) on mobile communication devices provides a means by which network operators can provide information to their subscribers. Currently, networks provide users with information including news and weather updates, sports results and traffic news. Typically, users will make a single request for information or subscribe to receive periodic updates.

Networks can transmit messages to units via point-to-point SMS messaging or cell broadcasts (CB). A point-to-point message is a single transmission from the network to a specific unit. The destination unit is identified by its unique identification number.

Point-to-point messaging enables the network to transmit a unique message to a single user. If the network wishes to send an identical message to multiple units via point-to-point transmission it must send multiple messages, i.e. one to each unit. Examples of such use include sports updates and other subscriber information. The transmission of identical messages to multiple units via point-to- point messaging is inefficient since there is a cost associated with each transmission and, since many messages are transmitted at the same time, the bandwidth being used on the network at any particular time is increased.

Networks can also transmit messages to subscribers using cell broadcasts (CB). A cell broadcast allows the network to transmit an identical message to multiple units within a cell via a single broadcast. The broadcast is received by all units within the relevant cell. Typically, the cell broadcast identifies the message type and, on receiving the transmission, each unit determines whether or not to process the message. An advantage of cell broadcasts over point-to-point messaging is that, potentially, the network can contact all units within the cell by transmission of a single broadcast. Therefore, cell broadcasts reduce the data traffic on the network.

Cell broadcasts offer a useful means for networks to provide their subscribers with information. Cell broadcasts also provide an advertising platform whereby companies may target all network subscribers within a particular cell. Since a cell broadcast is transmitted to all units within a particular cell, the cell broadcast can specifically inform users of information relating to the geographical area defined by the cell, for example traffic news regarding roads within the cell.

Cells can cover very large geographical areas and, in particular, many streets or towns. Although a cell broadcast covers a particular geographic locality, an advertising drive for a specific shop, or traffic news regarding a specific road, is unlikely to be of interest to the majority of subscribers within the cell. Therefore, each unit will typically process a large number of cell broadcasts which are of no interest to the user. A user may cancel his subscription to a particular type of cell broadcast although users may be reluctant to do this in case a future message is of particular relevance to them.

Global positioning systems (GPS) are increasingly provided on mobile communication devices. The accuracy of GPS systems enable the geographical location of the unit to be determined to within a few metres.

We have appreciated that it would be useful for a unit to be able to filter CBs based on the geographic location of the unit.

Therefore, if a CB has some geographical significance, the unit will only process the CB if it is positioned within the relevant geographical area.

Embodiments of the present invention provide a means by which a network can specify, within a CB, that the CB or part of it is only relevant to users within a specific geographic area defined in the CB. On receiving the CB, a unit will compare its particular geographical location, using GPS coordinates, with the relevant geographical area identified in the cell broadcast. If the unit is within the relevant area, the transmission is processed and any relevant information within the CB is displayed to the user.

However, if the unit is not positioned within the specified area then the message is not displayed.

Embodiments of the invention provide networks with the facility to transmit information which includes data relating to a predefined area.

The invention is defined in its various aspects in the appended claims, to which reference should now be made.

An embodiment of the present invention will now be described in detail by way of example with reference to the accompanying drawings in which: Figure 1 is a flow diagram showing the procedure by which a unit can selectably process a cell broadcast.

Figure 2 is a flow diagram showing the procedure for processing cell broadcast when the unit is moving, Figure 3 is a flow diagram showing the procedure for identifying and processing a cell broadcast using a keyword identifier.

Figure 4 is a flow diagram showing the procedure for storing a cell broadcast.

Figure 5 is a flow diagram showing the procedure for retrieving and processing a cell broadcast.

Figure 6 is a block diagram of the mobile communication unit.

Referring to Figure 1, in a first embodiment of the present invention, the mobile unit determines its Universal Transverse Mercator coordinates at 10. Typically the UTM coordinates of the mobile unit will be identified and updated periodically. At 20 the unit receives a cell broadcast. At 30, the unit determines whether the CB identifies a specific geographic area to which the CB is relevant. The specified geographic area defines the target area for the CB and is typically defined in terms of UTM coordinates.

Preferred embodiments of the invention define the target area by identifying the UTM coordinates of a central point and specifying a radius from that point to encompass the target area. Further embodiments may specify the target area by defining the coordinates of the corners of the area or by other means.

If the CB does not define a target area at 30, the CB is processed in the normal way at 40. However, if the CB specifies a target area the unit compares the UTM coordinates of the unit with the target area at 50. If the unit is not positioned within the target area, the unit determines that the CB, or part of the CB, is currently of no relevance to the unit at 60 and the CB is not processed. If the CB is not relevant, it may be either deleted or stored within a specified area of memory for a predetermined time period or until the CB is updated. If the unit is within the target area at 60, the unit determines that the CB is of relevance to the user and the CB is processed by the unit at 70. Typically, the CB will include a message to be displayed by the unit however, on certain occasions, the CB may instruct re-configuration of the unit or other internal updates. The CB may contain a number of messages or information which relate to different geographic locations. The unit will only process the parts of the message which are relevant to the present position of the unit.

Figure 2 is a flow diagram relating to the case when the unit changes its geographical position after a CB has been received which was not relevant to the unit in its previous position. As explained above, if the mobile unit is outside the target area of a CB, the CB may be stored for a predefined time period or until the CB is updated in an allocated area of memory. The GPS coordinates of the unit are updated at 110. At 120, the unit determines whether any CBs including target areas are stored in the memory. If not, then the unit returns to normal operating mode. If such a CB is stored, the unit compares the updated GPS coordinates of the unit with the target area of the stored CB at 130. If the unit is not within the target area at 140 the unit returns to normal operating mode.

However, if the unit is within the target area at 140 then the CB is processed at 150 and displayed o the user.

In order to implement the present invention, a cell broadcast must identify that it has a target area and also include details of the target area. In a first implementation of the invention a mark up language is used to identify that the CB specifies a target area.

The mark up language could be designed as an extension to existing languages for example, Nokia smart messaging. Any unit wishing to use this service must be programmed with suitable software to recognise the mark up language and therefore identify that the CB includes information specific to a particular area. A first example of a geographically relevant message within a CB is: BEGIN:VLOCAL Special Offers at Bloggs Today UTM: 17/T 0439457 5024597 R100 LINK: www.bloggs.co.uk/offers.htm END: VLOCAL This message may form part or the whole of a CB. The key words are identified in bold. In this example BEGIN:VLOCAL and END: VLOCAL specify the start and end of the location specific part of a CB.

The command BEGIN:VLOCAL identifies to the unit that the following text, up to END: VLOCAL, relates to a local information message.

Receipt of a CB including the VLOCAL command will trigger the unit to compare the GPS coordinates of its present location with the area specified in the CB.

The area to which the CB is relevant is defined by the UTM command. In this first example, the location data that follows consists of a UTM grid coordinate (given using the Universal Transverse Mercator grid system) followed by data defining the area with respect to the UTM coordinates. In this first implementation, the target area is a circle centred on the specified UTM coordinate and having a radius R given in metres. As discussed above, the target area could be defined in other ways, for example, specifying the coordinates of the corners of a shape. The command LINK identifies a link to additional information relevant to the CB. In this example a relevant web address is included and will be displayed to the user. If interested, the user can click on the link to browse the specified web page.

A CB may include a plurality of location specific commands, each of which is defined within a separate BEGIN: VLOCAL - END:VLOCAL stream. In this case, the unit will only process the messages which are relevant to its present location.

Figure 3 is a flow diagram showing the process by which the CB of the first implementation is received, selected and processed by a unit. At 200 a cell broadcast is received by the unit. At 210 the unit determines whether the cell broadcast contains a keyword to identify that the CB relates to a specific target area. If the CB does not contain such a keyword the CB is processed as a normal cell broadcast at 220. However, if the CB contains a keyword the UTM parameters are decoded at 230. The unit then identifies its current GPS coordinates at 240. At 250 the UTM parameters from the CB are compared with the GPS coordinates of the unit. If the GPS coordinates of the device match the UTM parameters at 260 the CB is processed by the unit at 270. Any further information for example web links are also processed and displayed. At 260, if the GPS coordinates of the unit do not fall within the UTM parameters of the cell broadcast the CB is not processed by the unit but may be stored.

A second embodiment of the present invention makes use of the bit message code to identify a cell broadcast as including messages relevant to particular geographical locations. This is in contrast to the keywords used in the previous example. According to 3G specifications, every cell broadcast must include a parameter called a Serial Number. Within the Serial Number, 10 bits are reserved for PLMN (public land mobile network) operators as message code. Certain embodiments of the invention may use these 10 bits to identify that a CB contains location information and, specifically, the cell broadcast message identifiers (CBMIs) of messages that should be displayed when the unit is within the specific location.

Such a message will only contain UTM locations and lists of the CBMIs that should be displayed when a unit is within the specified UTM coordinates. Therefore, this example allows a single CB to include a number of messages relating to different locations. For

example:

XXX

UTM: 17 T 0439457 5024597 R100 CBMI: 27,30,131 UTM: 17 T 0439499 5024501 R150 CBMI: 82 In this example, the message code XXX is used to indicate that the CB includes geographically relevant information. The CBMIs relate to different standard messages which are recognised by the unit. For example 27 may translate to the message "Welcome to Bloggs. Today's promotions are n. The CMBI: keyword is followed by a list of cell broadcast message identifiers that should be displayed when the phone is within the relevant area. The relevant locations are specified by the UTM coordinates. In the above example, CBMIs 27, 30 and 131 are relevant to the geographical area defined by UTM coordinates 17 T 0439457 5024597 R100. Cell broadcast messages that are conditionally displayed do not require any special formatting, however an extended formatting for special effects could be developed if so desired. This technique can also filter cell broadcast data download messages so that the SIM toolkit application is only passed those with CBMIDs listed for a matched location.

This second implementation is now explained with reference to figures 4 and 5. The implementation includes a two-stage process.

At 400 the unit receives a cell broadcast. At 410 the unit determines whether the CB includes a message code which identifies that the CB includes messages of geographical relevance. At this step, the unit is searching for the predefined message code, eg XXX'. If the CB does not include the special message code then the CB is processed as a normal cell broadcast at 420. If the CB does include the predefined message code then the CB is decoded and the CBMI and UTM information is retrieved at 430. The CBMI and UTM information is then stored in the memory of the unit at 440.

Using the example above, the unit would store a table of the form:

CBMI UTM

27, 30, 131 17 T 0439457 5024597 R100 82 17 T 0439499 5024501 R150 The table may be updated or replaced by further CBs.

In the second stage of the process, shown in figure 5, the unit, having stored the table, receives a further CB at 500. The unit determines whether the new CB includes a CBMI which is stored in the table at 510. If the CB does not include a CBMI which is stored in the table, the CB is processed in the normal way at 520.

If the CB includes a CBMI which is stored in the table, the unit determines the UTM coordinates of the unit. The unit then consults the table and determines whether the location of the unit falls within the UTM coordinates of the relevant CBMI at 530. If the unit is not within the relevant coordinates the message is discarded at 540. However, if the unit is within the relevant UTM coordinates the message is displayed to the user at 550.

This second embodiment is particularly useful when the unit moves between cells or moves into an area covered by a different network provider. A single cell broadcast including a specified message code, e.g. XXX, can be used to update the entire table of messages. Furthermore, the network can control the time at which a particular message will be displayed to the user. Further embodiments may periodically scan the table to see if any of the messages relate to the present position of the unit. In this case, the unit would compare its UTM coordinates with the coordinates listed in the table and display any CBMIs which are relevant to its present location. This periodic scanning may also be performed on stored CBs. Embodiments may periodically check the table to see if the present coordinates of the unit match the UTM coordinates stored in the table. If the UTM coordinates match, the unit can check stored CB messages for matching CBMIs. Any matching CBMIs can then be displayed to the user.

Figure 6 is a block diagram showing the apparatus included in the present invention. The system includes a GPS system 600 to enable the unit to identify its present location. The system also includes a CB receiver 610 which is connected to a geographic tag identifier 620 which determines whether any received CBs include information of geographical significance. The unit includes a memory area 650 which is designated to storing UTM coordinates and relevant messages. The unit also includes a location comparator 640 for comparing the coordinates of the unit with the coordinates relevant to incoming or stored messages. Finally, the unit includes a processor 630 for processing any CBs which are relevant to the unit.

46159 GB 8 Claims 1. A method for selectively processing a cell broadcast received by a mobile communication device including the steps of: determining the geographical coordinates of a mobile communication device, receiving a cell broadcast; determining that the cell broadcast identifies a geographical area to which at least part of the cell broadcast is relevant; comparing the geographic coordinates of the mobile communication device with the geographical area identified in the cell broadcast; and processing the cell broadcast in dependence on the coordinates of the device falling within the area identified in the cell broadcast.

2. A method for selectively processing a cell broadcast according to claim 1 including the step of storing a cell broadcast in dependence on the cell broadcast identifying a geographical area.

3. A method for selectively processing a cell broadcast according to claim 1 or 2 wherein the step of determining the geographical coordinates of the mobile communication device is performed periodically.

4. A method for selectively processing a cell broadcast according to claim 1, 2 or 3 wherein the step of storing the cell broadcast is performed if the coordinates of the device do not fall within the area identified in the cell broadcast.

5. A method for selectively processing a cell broadcast according to claim 4 including the step of comparing the coordinates of the device with the area identified in a stored cell broadcast when the i geographical coordinates of the device are determined.

6. A method for selectively processing a cell broadcast according to any preceding claim wherein the step of determining whether the cell broadcast identifies a geographical area is performed by scanning the CB to identify a keyword.

7. A method for selectively processing a cell broadcast substantially as herein described with reference to the figures.

8. An apparatus for selectively processing a cell broadcast received by a mobile communication device comprising: a means for determining the geographic coordinates of the mobile communication device; means for receiving a cell broadcast; means for determining whether the cell broadcast identifies a geographical area to which it is relevant; means for comparing the geographic coordinates of the mobile communication device with the geographical areas defined identified in the cell broadcast; and a means for processing the cell broadcast in dependence on the coordinates of the unit falling within the area identified in the cell broadcast.

9. An apparatus for selectively processing a cell broadcast according to claim 8 wherein the geographical coordinates of the mobile communication device are determined periodically.

10. An apparatus for selectively processing a cell broadcast according to claim 8 or 9 comprising a means to store cell broadcasts.

11. An apparatus for selectively processing a cell broadcast according to claim 10 wherein the coordinates of the device are compared with the area identified in a stored cell broadcast when the geographical coordinates of the device are determined.

12. An apparatus for selectively processing a cell broadcast according to any of claims 8 to 11 comprising a means to scan the cell broadcast to identify a keyword.

13. An apparatus for selectively processing a cell broadcast substantially as herein described with reference to the figures.

Claims (16)

Amendments to the claims have been filed as follows CLAIMS
1. A method for selectively processing a cell broadcast received by a mobile communication device including the steps of: receiving a cell broadcast; determining that the cell broadcast identifies a geographical area to which at least part of the cell broadcast is relevant; storing the cell broadcast if the cell broadcast identifies a geographical area different to the current location of the mobile device; periodically determining the geographical coordinates of the mobile communication device; : c, comparing the geographic coordinates of the mobile communication device with the geographical area identified in the stored cell broadcast; and processing the stored cell broadcast in dependence on 20 the result of the comparison.
2. A method for selectively processing a cell broadcast according to claims l wherein the step of determining that the cell broadcast identifies a geographical area is made in dependence on the cell broadcast including a keyword.
3. A method for selectively processing a cell broadcast according to claims 1 or 2 wherein a cell broadcast includes a plurality of messages relevant to different geographical areas.
4. A method for selectively processing a cell broadcast according to claim 3 wherein each message has a separate cell broadcast message identifier.
5. A method for selectively processing a cell broadcast according to claim 4 including the step of receiving a further cell broadcast including a message identifier wherein the step of determining the geographical coordinates < 15 of the device is made in dependence on the cell broadcast message identifier matching that of the stored messages. . .
6. A method for selectively processing a cell broadcast " according to any proceeding claim including the step of updating the stored messages by further cell broadcasts.
7. A method for selectively processing a cell broadcast according to any proceeding claim including the step of replacing the stored cell broadcast with further cell broadcasts.
8. A method for selectively processing a cell broadcast substantially as herein described with reference to the figures.
9. An apparatus for selectively processing a cell broadcast received by a mobile communication device comprising: a means for receiving a cell broadcast; means for determining whether the cell broadcast identifies a geographical area to which it is relevant; means for storing the cell broadcast if the cell broadcast identifies a geographical area different to the current location of the mobile device; a means for periodically determining the geographical coordinates of the mobile communication device; a means for comparing the geographic coordinates of the mobile communication device with the geographical areas identified in the cell broadcast; and a means for processing the stored cell broadcast in dependence on the results of the comparison.
10. An apparatus for selectively processing a cell broadcast according to any of claims 9 comprising a means to scan the cell broadcast to identify a keyword. À !
11. An apparatus according to claim 10 wherein the cell broadcast includes a plurality of messages relevant to different geographical areas. .
12. An apparatus according to claim 11 wherein each message has a separate cell broadcast message identifier.
13. An apparatus according to claim 12 including the means to receive a further cell broadcast including a message identifier wherein the geographical coordinates of the device are determined in dependence of the cell broadcast message identifier matching that of stored messages.
14. An apparatus for according to any of claims 9 to 13 including a means for updating stored cell broadcasts by further cell broadcasts. ran
15. An apparatus according to any of claims 9 to 14 including a means to replace stored cell broadcasts with further cell broadcasts.
16. An apparatus for selectively processing a cell broadcast substantially as herein described with reference to the figures. ! ( A.
IS
GB0316535A 2003-07-15 2003-07-15 An apparatus for selectively processing cell broadcasts on a mobile communication device Expired - Fee Related GB2404115B (en)

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US9451401B2 (en) 2011-05-27 2016-09-20 Qualcomm Incorporated Application transport level location filtering of internet protocol multicast content delivery

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