Abstract:
A method of providing content notifications to devices in a wireless communication system includes obtaining notification information comprising an identifier that defines a subset of a plurality of devices on a network configured to be responsive to content notifications; generating a notification message based on the obtained notification information to cause the subset of the plurality of devices to retrieve content from a network; and broadcasting the notification message over the network to the plurality of devices. The method also includes receiving content notifications in a wireless communication system, including receiving, in a wireless network, a notification message comprising an identifier that defines a subset of a plurality of devices on a network configured to be responsive to content notifications; and retrieving content from a network in response to being one of the subset of the plurality of devices as defined by the identifier of the received notification message.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
       [0001]    The present application is a continuation of U.S. patent application Ser. No. 11/558,858, entitled “METHOD AND APPARATUS FOR CONTROLLING RESPONSE TO SERVICE NOTIFICATIONS IN A NETWORK ENVIRONMENT,” filed Nov. 10, 2006, and claims the benefit of U.S. Provisional Application Ser. No. 60/817,773, entitled “METHOD AND APPARATUS FOR DELIVERY OF SERVICE ALERTS TO DEVICES IN MULTICAST COMMUNICATION SYSTEMS,” filed Jun. 30, 2006, all of which are assigned to the assignee hereof, and the entirety of which is incorporated herein by reference. 
     
    
     BACKGROUND 
       [0002]    I. FIELD 
         [0003]    The present application relates generally to the operation of a distribution network, and more particularly, to methods and apparatus for providing service notifications in a network environment. 
         [0004]    II. DESCRIPTION OF THE RELATED ART 
         [0005]    Data networks, such as wireless communication networks, have to trade off between services customized for a single terminal and services provided to a large number of terminals. For example, the distribution of multimedia content to a large number of resource limited portable devices (subscribers) is a complicated problem. Therefore, it is very important for network administrators, content retailers, and service providers to have a way to distribute content and/or other network services in a fast and efficient manner and in such a way as to increase bandwidth utilization and power efficiency. 
         [0006]    In current content delivery/media distribution systems, real time and non real time services are packed and delivered to devices on a network. For example, a communication network may utilize Orthogonal Frequency Division Multiplexing (OFDM) to broadcast content and services from a network server to one or more mobile devices. During operation, distribution system entities would like to notify targeted devices of selected events, such as marketing promotions, price changes, programming changes, or other events of interest to device users. These same entities may also wish to notify devices of application upgrades or other information that may be available for retrieval. Unfortunately, conventional systems may not provide a fast and efficient mechanism to notify targeted devices of events of interest, or to notify devices of application upgrade or other information that may be available for retrieval. 
         [0007]    Therefore, it is desirable to have a system that operates to provide notifications of events of interest to targeted devices on a broadcast network. The system should also operate to notify targeted devices of available upgrades or other information and facilitate automatic retrieval of such upgrades or information. 
       SUMMARY 
       [0008]    In one or more aspects, a notification system, comprising methods and apparatus, is provided that operates to provide service notifications in a network environment. For example, the system is operable to provide notifications to targeted devices on a communication network. The system is also operable to notify targeted devices of available upgrades or other information and facilitate automatic retrieval of such upgrades or information. 
         [0009]    In an aspect, a method includes providing content notifications to devices in a wireless communication system, including obtaining notification information comprising an identifier that defines a subset of a plurality of devices on a network configured to be responsive to content notifications; generating a notification message based on the obtained notification information to cause the subset of the plurality of devices to retrieve content from a network; and broadcasting the notification message over the network to the plurality of devices. 
         [0010]    In another aspect, the method also includes receiving content notifications in a wireless communication system, including receiving, in a wireless network, a notification message comprising an identifier that defines a subset of a plurality of devices on a network configured to be responsive to content notifications; and retrieving content from a network in response to being one of the subset of the plurality of devices as defined by the identifier of the received notification message. 
         [0011]    In another aspect, a method is provided that operates to provide a notification system. The method comprises obtaining notification information, determining a response factor, generating a notification message comprising selected notification information, wherein the notification message is generated to produce a response based on the response factor, and broadcasting the notification message. 
         [0012]    In another aspect, an apparatus is provided that operates to provide a notification system. The apparatus comprises a notification interface configured to obtain notification information, processing logic configured to determine a response factor and generate a notification message comprising selected notification information, wherein the notification message is generated to produce a response based on the response factor, and broadcast logic configured to broadcast the notification message. 
         [0013]    In another aspect, an apparatus is provided that operates to provide a notification system. The apparatus comprises means for obtaining notification information, means for determining a response factor, means for generating a notification message comprising selected notification information, wherein the notification message is generated to produce a response based on the response factor, and means for broadcasting the notification message. 
         [0014]    In another aspect, a computer-readable medium is provided that has a computer program comprising instructions, which when executed by at least one processor, operate to provide a notification system. The computer program comprises instructions for obtaining notification information, instructions for determining a response factor, instructions for generating a notification message comprising selected notification information, wherein the notification message is generated to produce a response based on the response factor, and instructions for broadcasting the notification message. 
         [0015]    In another aspect, at least one processor is provided that is configured to perform a method for providing a notification system. The method comprises obtaining notification information, determining a response factor, generating a notification message comprising selected notification information, wherein the notification message is generated to produce a response based on the response factor, and broadcasting the notification message. 
         [0016]    In another aspect, a method is provided that operates to provide a notification system. The method comprises receiving a notification message comprising one or more notification parameters, filtering the notification message based on at least one notification parameter to produce a filtered notification message, processing the filtered notification message to determine at least one notification, and rendering the at least one notification. 
         [0017]    In another aspect, an apparatus is provided that is configured to provide a notification system. The apparatus comprises receiving logic configured to receive a notification message comprising one or more notification parameters, and a message filter configured to filter the notification message based on at least one notification parameter to produce a filtered notification message. The apparatus also comprises processing logic configured to process the filtered notification message to determine at least one notification, and rendering logic configured to render the at least one notification. 
         [0018]    In another aspect, an apparatus is provided that is configured to provide a notification system. The apparatus comprises means for receiving a notification message comprising one or more notification parameters, and means for filtering the notification message based on at least one notification parameter to produce a filtered notification message. The apparatus also comprises means for processing the filtered notification message to determine at least one notification, and means for rendering the at least one notification. 
         [0019]    In another aspect, a computer-readable medium is provided that has a computer program comprising instructions, which when executed by at least one processor, operate to provide a notification system. The computer program comprises instructions for receiving a notification message comprising one or more notification parameters, and instructions for filtering the notification message based on at least one notification parameter to produce a filtered notification message. The computer program also comprises instructions for processing the filtered notification message to determine at least one notification, and instructions for rendering the at least one notification. 
         [0020]    In another aspect, at least one processor is provided that is configured to perform a method for providing a notification system. The method comprises receiving a notification message comprising one or more notification parameters, and filtering the notification message based on at least one notification parameter to produce a filtered notification message. The method also comprises processing the filtered notification message to determine at least one notification, and rendering the at least one notification. 
         [0021]    Other aspects, advantages, and features will become apparent after review of the hereinafter set forth Brief Description of the Drawings, Description, and the Claims. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0022]    The foregoing aspects described herein will become more readily apparent by reference to the following description when taken in conjunction with the accompanying drawings wherein: 
           [0023]      FIG. 1  shows a data network that comprises an aspect of a notification system; 
           [0024]      FIG. 2  shows a diagram of a server suitable for use in aspects of a notification system; 
           [0025]      FIG. 3  shows a notification message suitable for use in aspects of a notification system; 
           [0026]      FIG. 4  shows a diagram illustrating a notification detail field for use in aspects of a notification system; 
           [0027]      FIG. 5  shows notification types for use in aspects of a notification system; 
           [0028]      FIG. 6  shows a method for operating a server suitable for use in aspects of a notification system; 
           [0029]      FIG. 7  shows a device suitable for use in aspects of a notification system; 
           [0030]      FIG. 8  shows a method for operating a device suitable for use in aspects of a notification system; 
           [0031]      FIG. 9  shows a server suitable for use in aspects of a notification system; and 
           [0032]      FIG. 10  shows a device suitable for use in aspects of a notification system. 
       
    
    
     DESCRIPTION 
       [0033]    The following description describes aspects of a notification system that operate to notify devices on a broadcast network about events of interest. For example, the system operates to notify targeted devices about marketing promotions, price changes, programming changes, or other events of interest. The system also provides user defined filtering and interactive functionality to facilitate automatic retrieval of upgrades or other information. The system is especially well suited for use in wireless network environments, but may be used in any type of network environment, including but not limited to, communication networks, public networks, such as the Internet, private networks, such as virtual private networks (VPN), local area networks, wide area networks, long haul network, or any other type of network. 
         [0034]      FIG. 1  shows a data network  100  that comprises an aspect of a notification system. The network  100  comprises server  102 , data network  104 , and a plurality of devices shown generally at  106 . The data network  104  may be any type and/or combination of wired and wireless networks that allow data to be transmitted between the server  102  and the devices  106 . The server  102  is coupled to the network  104  via the communication link  108 , which may be any type of wired and/or wireless communication link that allows the server  102  to communicate with the data network  104 . The devices  106  comprise a mobile telephone, PDA, notebook computer, pager, email device, or any other type of device that may operate on the network  104 . The devices  106  are in communication with the data network  104  via wireless communication links  110 , which allows data to be wirelessly transmitted between the network  104  and the devices  106 . In an aspect, the wireless communication links  110  comprises forward communication channels, reverse communication channels, control channels, and any other type of communication channel that may be used to communicate information between the network  104  and the devices  106 . 
         [0035]    It should also be noted that aspects of the notification system are suitable for use with virtually any number of devices that communicate with the network  104  via wired and/or wireless communication links. For the purpose of this description, the operation of the device  112  will be described in detail; however aspects of the notification system are equally applicable to all the devices shown generally at  106 . 
         [0036]    During operation, the server  102  receives or otherwise obtains notification information  114  that is to be provided to the devices  106  as notification of one or more conditions or events. For example, the notification information  114  is provided by content providers, content retailers, system administrators or other notification providers or network entities. The notification information  114  comprises marketing promotions, price changes, programming changes, or other events of interest. These same entities may also wish to notify the devices  106  of application upgrades or other information that may be available for retrieval. For example, application upgrades may be available for retrieval from a particular network location. 
         [0037]    The system allows operators to create notifications by specifying the scope of the notification and associating it with one or more notification types. A notification message is generated that comprises a message subject and body. The subject is the text title of the notification, and the body is a text message. The notification messages are able to support multiple languages and each notification may comprise multiple messages in different languages. For each message, the language is specified and the subject and body text are provided in that language. 
         [0038]    For each notification, a start time and an end time are specified that define a time window during which the notification message will be delivered. After generating a notification message, the notification message can be deleted or modified before the start time of its delivery window. After the start time of a delivery window, however, only the end time of the notification message is modifiable. Each notification message is associated with a sequence number. The sequence number is used by receiving devices to avoid storing duplicate notifications. 
         [0039]    The server  102  comprises notification generation logic  116  that operates to receive the notification information  114  and generate one or more notification messages  118 . A more detailed description of the format of a notification message is provided in another section of this document. The server  102  then transmits the notification messages  118  over a broadcast channel  120  provided by the network  104 . The devices  106  are able to listen on the broadcast channel  120  and receive the notification messages  118 . 
         [0040]    As illustrated by the device  112 , the devices  106  comprise notification filter  122  and notification processor  124 . The notification filter  122  operates to filter received notification messages so that only those messages of interest to a particular device are processed. For example, the notification filter  122  operates to filter the notification messages  118  based on sequence number, device model, geographic region, content subscriptions, user defined preferences or any other characteristic or parameter associated with the device  112 . 
         [0041]    The notification processor  124  operates to process filtered notification messages to determine information that is relevant to a particular device. For example, the information comprises marketing promotions, price changes, programming changes, or other events of interest to that particular device. The notification processor  124  operates to update local system parameters with the new information, render notifications to the device user, or store notifications for later viewing. 
         [0042]    In another aspect, the notification messages  118  comprise notifications having interactive functionality. For example, a notification may provide interactive functionality with respect to application upgrades or other information that is available for retrieval. The notification processor  124  operates to determine the location of the available upgrade or information and automatically retrieve that upgrade or information. For example, the device  112  may receive a notification message about a particular application upgrade that is available for retrieval from an upgrade server  126 . The notification processor  124  operates to contact the upgrade server  126 , as shown at  128 , to retrieve the available upgrade or information. 
         [0043]    In an aspect, the server  102  operates to generate the notification messages  118  to control a response factor of the devices  106 . For example, the notification messages  118  are generated so that a selected number of devices will perform a particular action. The action may be to perform an application upgrade. In an aspect, parameters are included in the notification message  118  that are associated with a selected number of devices, such as a range of device identifiers. When the identified devices receive the notification message  118 , they will respond by, for example, retrieving an application update from the update server  126 . This mechanism allows the server  102  to control how many devices attempt to access the update server  126  at any particular time so as to avoid network congestion. 
         [0044]    Thus, in one or more aspects, a notification system is provided that operates to provide notifications to targeted devices in a network. The system also provides interactive functionality and a mechanism to control how many devices perform selected actions based on a response factor, so as to avoid network congestion. As a result, aspects of the notification system provide a way for devices to be notified of selected events and to perform selected actions in a timely and efficient manner. It should be noted that the network  100  is just one implementation and that other implementations are possible within the scope of the aspects. 
         [0045]      FIG. 2  shows a diagram of a server  200  suitable for use in aspects of a notification system. For example, the server  200  may be the server  102  shown in  FIG. 1 . The server  200  comprises processing logic  202 , notification storage  204 , notification provider interface (I/F)  206 , and transceiver logic  208  all coupled to a data bus  210 . It should be noted that the server  200  is just one implementation and that other implementations are possible within the scope of the aspects. 
         [0046]    The transceiver logic  208  comprises hardware and/or software that operate to allow the server  200  to communicate data or other information over a network with remote devices or systems. For example, in an aspect, the transceiver logic  208  comprises broadcast logic that operates to broadcast notification messages over a broadcast channel  214 . The term “broadcast” is used herein to mean a broadcast, multicast or other transmission over a network that can be received by two or more devices. In an aspect, the transceiver logic  208  also comprises unicast logic to communicate over a unicast channel  212  so that the server  200  may communicate directly over a network with a particular device. 
         [0047]    The notification provider interface (I/F)  206  comprises hardware and/or software that operate to allow the server  200  to communicate with notification providers to receive notification information for distribution to devices. For example, the notification providers comprise content providers, content retailers, or any other distribution system entity. The I/F  206  comprises communication logic that allows communication with notification providers over a wired or wireless network link or any other suitable link, such as a direct connect link. The notification storage  204  comprises any suitable memory operable to store notification information received by the notification provider I/F  206 . 
         [0048]    In one or more aspects, the processing logic  202  comprises a CPU, processor, gate array, hardware logic, memory elements, virtual machine, software, and/or any combination of hardware and software. Thus, the processing logic  202  generally comprises logic to execute machine-readable instructions and to control one or more other functional elements of the server  200  via the data bus  210 . 
         [0049]    In an aspect, the processing logic  202  operates to generate one or more notification messages for distribution to devices on a network. For example, the notification messages are broadcast over the broadcast channel  212  by the transceiver logic  208 . In an aspect, the processing logic  202  operates to generate the notification messages based on a response factor to control how selected devices respond to a notification message. For example, a notification message is generated to identify selected devices that are to contact an upgrade server to retrieve an application upgrade. Thus, the processing logic  202  operates to generate the notification messages to control network congestion by identifying selected groups of devices that are to obtain the upgrade at any particular time. 
         [0050]    In an aspect, the following elements are specified for each notification.
   a. Notification Type: Notifications can be classified into a large number of types as described below.   b. Notification Scope: The scope of the notifications determines which devices need to process the notifications. For example, for a blackout notification associated with a specific channel, the notification will be processed by the devices that are subscribed to that particular channel. For an application upgrade notification, only those devices that need the application upgrade will process the notification. For an emergency notification, the notification needs to be delivered and processed by all the devices in the network.   c. Notification Delivery Window: The delivery window sets the duration of the notifications to be broadcast in the network.   d. Notification Subject: The subject is the text title of the notification.   e. Notification Body: The body is associated with the mime type to support various types of notifications, e.g., audio, video or image etc. The body could be a simple string, it could contain hyperlinks for users to be interactive, or it could contain multimedia content.   
 
         [0056]    In an aspect, the notification system comprises program instructions stored on a computer-readable medium, which when executed by at least one processor, such as the processing logic  202 , operate to provide the functions of the notification system described herein. For example, instructions may be loaded into the server  200  from a computer-readable medium, such as a floppy disk, CDROM, memory card, FLASH memory device, RAM, ROM, or any other type of memory device or computer-readable medium that interfaces to the server  200 . In another aspect, the instructions may be downloaded into the server  200  from a network resource that interfaces to the sever  200  via the transceiver logic  208 . The instructions, when executed by the processing logic  202 , provide one or more aspects of the notification system described herein. 
         [0057]      FIG. 3  shows a notification message  300  for use in aspects of a notification system. For example, the format of the notification message  300  is suitable for use for the notification messages  118  shown in  FIG. 1 . In an aspect, the notification message  300  is generated by the processing logic  202  of the server  200 . It should be noted that the notification message  300  is just one implementation and that other implementations having more or less information are possible within the scope of the aspects. 
         [0058]    The notification message  300  comprises a notification version  302 , a notification identifier (ID)  304 , a composite address  306 , and a notification record  308 . 
         [0059]    The notification version  302  indicates the current version of the notification message  300 . The notification ID  304  identifies the notification message  300 . 
         [0060]    The composite address  306  operates to address the notification message  300  to one or more targeted devices. For example, a notification message can be sent to a subset of devices as specified by the composite address  306 . In an aspect, there are four types of address classes  310 , namely; billing and customer service, content retailer, package, and service class. Each address class is associated with one or more addresses  312 . However, it should be noted that any number or types of address classes may be used. 
         [0061]    In an aspect, the notification record  308  comprises three fields as follows.
   a. Notification type (NOTFN_TYPE) field  314     b. Notification Length (LENGTH) field  316     c. Notification Detail (NOTFN_DETAIL) field  318     
 
         [0065]    For example, in a marketplace notification, the text string “MARKETPLACE_NOTIFICATION” is set for the NOTFN_TYPE  314 . The LENGTH field  316  indicates the length of the NOTFN_DETAIL field  318  in bytes. The NOTFN_DETAIL field  318  contains the encapsulated notification data. The format of the NOTFN_DETAIL field  318  is provided in another section of this document. 
         [0066]    In an aspect, the system operates to periodically send the notification messages over the network. The periodicity at which the notification messages are transmitted depends on a data rate provisioned at the transmitting server. However, it should be noted that the system is operable for use with virtually any periodicity. 
       Notification Detail Field 
       [0067]      FIG. 4  shows a diagram illustrating a notification detail field  400  for use in aspects of a notification system. In an aspect, the notification detail field  400  is a binary encoded instance of the following XML schema. 
       Notification Sequence Number ( 402 ) 
       [0068]    This is a 2-byte unsigned integer sequence number that is incremented by one whenever a new notification is generated. 
       Notification Type ( 404 ) 
       [0069]    This 1-byte unsigned integer that specifies the type of notification from one of the types illustrated in  FIG. 5 . 
       Notification Language ( 406 ) 
       [0070]    This specifies the language used for the notification subject and body text. 
       Notification Body Mime Type ( 408 ) 
       [0071]    This field indicates the type of the body. For example, the type of the body may be set to “text/plain.” 
       Notification Subject ( 410 ) 
       [0072]    This is a text string describing the subject of the notification. In an aspect, the maximum length of the subject in characters is defined by a MAX_SUBJECT parameter and may be of any selected length. 
       Notification Body ( 412 ) 
       [0073]    This is a text string that describes the notification. The maximum length of the text body in characters is defined by an MAX_BODY parameter and may be of any selected length. 
         [0074]      FIG. 5  shows notification type parameters  500  for use in aspects of a notification system. For example, the notification type parameters  500  are suitable for use in the notification detail field  400  shown in  FIG. 4 . It should be noted that the notification type parameters  500  are provided in just one implementation and that other implementations may provide other type parameters within the scope of the aspects. 
         [0075]    The notification type parameters  500  comprise parameters which may be formatted in any suitable format and may be encrypted using any suitable encryption technology. The notification type parameters  500  comprise marketing/promotion parameters  502  that identify particular marketing and promotional notifications. Other parameters provide for an emergency notification  504 , a blackout notification  506 , a price change notification  508 , an end user license agreement (EULA) notification  510 , terms of usage notification (TOU)  512 , a TOU change notification  514 , and a content rating notification  516 . 
         [0076]    The notification type parameters  500  also comprise an application upgrade notification  518  that identifies a particular application that has been upgraded. Furthermore, an upgrade link  520  is provided that identifies a network location where the application upgrade can be found. Thus, devices receiving the application upgrade notification  518  also received the upgrade link  520  to determine the network location of the upgrade for retrieval. Thus, the application upgrade notification  518  facilitates interactive functionality since a receiving device may automatically retrieve the upgrade at the location specified by the upgrade link  520 . 
         [0077]      FIG. 6  shows a method  600  for operating a server for use in aspects of a notification system. For clarity, the method  600  will be described with reference to the server  200  shown in  FIG. 2 . In one or more aspects, the processing logic  202  executes program instructions to control the server  200  to perform the functions described below. 
         [0078]    At block  602 , notification information is received from notification providers. For example, the notification providers comprise content providers, content retailers, application developers, or other distribution system entities. In an aspect, the notification I/F  206  operates to receive the notification information and stores the received information at the notification storage  204 . 
         [0079]    At block  604 , targeted devices and desired response factors are determined. For example, the targeted devices are determined based on device identifiers that are to be included in a notification message. The desired response factors are determined and indicate the number of devices that are to respond to a particular notification, such as an application upgrade notification. For example, an application upgrade notification may be associated with an upgrade link that identifies a network location of a particular application upgrade. To avoid network congestion, a desired response factor is determined that indicates how many devices should be allowed to respond to the notification and access the identified network location at any particular time. In an aspect, the processing logic  202  operates to determine response factors associated with any of the notifications. 
         [0080]    At block  606 , one or more notification messages are assembled. For example, a notification message is formatted as shown in  FIG. 3 . In an aspect, the processing logic  202  operates to assemble one or more notification messages. 
         [0081]    At block  608 , the notification messages are broadcast over a network. For example the notification messages are broadcast over a broadcast channel provided by a communication network so that devices listening on the broadcast channel can receive the notification messages. In an aspect, the transceiver logic  208  operates to broadcast the notification messages over the broadcast channel  214  within a predefined delivery window. 
         [0082]    At block  610 , a test is performed to determine if any of the notification messages need to be re-broadcast. For example, a notification message may have a selected broadcast periodicity that requires the message to be re-broadcast at selected intervals. In another aspect, if a selected response to a notification message is not received, then the notification message is re-broadcast until the desired response is received. In an aspect, the processing logic  202  operates to determine if any notification message is to be re-broadcast based on a periodicity factor or desired device response. If a notification message is to be re-broadcast, the method proceeds to block  608 . If it is determined that a re-broadcast is not necessary, the method stops at block  612 . 
         [0083]    It should be noted that the method  600  illustrates just one implementation and that changes, additions, deletions, or rearrangements of the described functions may be made without deviating from the scope of the described aspects. 
         [0084]      FIG. 7  shows a device  700  suitable for use in aspects of a notification system. For example, the device  700  is suitable for use as the device  112  shown in  FIG. 1 . The device  700  comprises processing logic  702 , notification message filter  704 , device resources and interfaces  706 , transceiver logic  708 , system parameters  710 , and notification storage  718  all coupled to a data bus  712 . It should be noted that the device  700  is just one implementation and that other implementations are possible within the scope of the aspects. 
         [0085]    The processing logic  702  comprises a CPU, processor, gate array, hardware logic, memory elements, virtual machine, software, and/or any combination of hardware and software. Thus, the processing logic  702  generally comprises logic to execute machine-readable instructions and to control one or more other functional elements of the device  700  via the data bus  712 . 
         [0086]    The device resources and interfaces  706  comprise hardware and/or software that allow the device  700  to communicate with internal and external systems. For example, internal systems may include mass storage systems, memory, display driver, modem, or other internal device resources. The external systems may include user interface devices, displays, keypad, printers, disk drives, or other local devices or systems. Thus, the device resources and interfaces  706  operate to allow notifications to be rendered in any suitable fashion on the device  700  to alert a device user. Furthermore, the device resources and interfaces  706  operate to allow user inputs that can be passed to the notification message filter  704 . 
         [0087]    The transceiver logic  708  comprises hardware and/or software that operate to allow the device  700  to transmit and receive data and other information with external devices or systems. For example, the transceiver logic  708  comprises broadcast logic that operates to allow the device  700  to receive broadcast transmissions over a broadcast channel  716 . The transceiver logic  708  also comprises unicast logic that operates to allow the device  700  to transmit and receive information over a unicast channel  714 . Thus, the device  700  is able to communicate with network entities, such as a broadcast server or an upgrade server. 
         [0088]    The system parameters  708  comprise parameters that are associated with the operation of the device on a distribution network. For example, the parameters comprise device identifiers, subscription information, application information, such as types and versions, and any other parameters or related information. The system parameters  708  are stored in any suitable memory and may be accessed, updated, or otherwise modified by the processing logic  702 . 
         [0089]    The notification storage  718  comprises any suitable memory operable to store notification information received in filtered notification messages. For example, filtered notification messages may be stored for later viewing. 
         [0090]    The notification message filter  704  comprises a CPU, processor, gate array, hardware logic, memory elements, virtual machine, software, and/or any combination of hardware and software. In an aspect, the notification message filter  704  operates to filter notification messages received over the broadcast channel  716 . For example, the notification messages comprise parameters that may be filtered based on the system parameters  708  to determine notification messages that are targeted to the device  700 . For example, a device identifier associated with a received notification message is processed to determine if it matches a device identifier stored in the system parameters  708 . If a match is determined, then the received notification message is determined to be a filtered notification message and is further processed by the processing logic  702 . If no match occurs, the notification message is ignored. 
         [0091]    In another aspect, the notification message filter  704  operates to filter notification messages received over the broadcast channel  716  based on received user input. For example, the notification messages comprise parameters that may be filtered based on user input received using the device resources and interfaces  706 . The parameters provided by the user input are used to determine notification messages that are to be processed or ignored by the device. For example, the user input may specify that only emergency alerts are to be processed by the device. If a received notification message is not associated with an emergency alert, then the message is ignored. The mechanism allows a device user input preferences that are used to determine which alerts are to be processed and which are to be ignored. Thus, received notification messages may be filtered by the notification message filter  704  based on any parameter stored in the system parameters or based on user inputs to determine filtered notification messages that are to be further processed. 
         [0092]    During operation, notification message may be periodically broadcast during a particular deliver window. Thus, the device  700  may receive the same notification multiple times. To avoid displaying previously received notifications to the user, the sequence number of each notification is saved in the notification storage  718  for a selected time period. If a notification message has arrived with the same sequence number as a previous notification message, the newly received message will be ignored. For example, whenever the device  700  receives a notification message, it will know if the notification message has already been received or not by comparing its sequence number with saved sequence numbers. If the sequence number of the notification message has not been saved, the device  700  considers that it is a new notification message and processes it accordingly. If the sequence number of the new notification message exists in the device, the notification message will be discarded. 
         [0093]    In an aspect, the processing logic  702  operates to notify and guide the device user to view any received notification messages. The processing logic  702  also operates to allow users to delete any received notifications. In an aspect, the processing logic  702  provides an automated memory-driven method for removing notifications. For example, when the number of stored notifications on the device  700  reaches a selected number and a new notification arrives, the oldest notification will be deleted. In another aspect, if the language of a received notification message is different from the preferred language specified for the device  700 , the notification will not be displayed on the device 
         [0094]    During operation, the device  700  operates to receive notification messages over the broadcast channel  716 . For example, the transceiver logic  708  operates to receive notification messages and pass them to the notification message filter  704 . The notification message filter  704  operates to process the received notification messages based on the system parameters  708  and/or user input parameters to determine filtered notification messages that are to be processed by the device  700 . For example, a received notification message may have a device identifier, region identifier, application identifier, or other parameters that match or otherwise qualify the message (based on the system parameters  708 ) to pass through the filter  704 . The processing logic  702  then processes those filtered notification messages that pass through the filter  704 . In an aspect, a filtered notification message may comprise an application upgrade notification having an associated upgrade link. The processing logic  702  then operates to obtain the upgrade by accessing the provided upgrade link. 
         [0095]    Once received notification message are filtered and processed, the device  700  will notify users of the notification. For example, the processing logic  702  renders notifications on the device using the device resources and interfaces  706 . Since notification messages may be sent multiple times during the notification delivery window, the device  700  operates to eliminate duplicate notifications to users if any. Alternatively, the filtered notification messages may be saved in the notification storage  718  for later viewing, or notification messages can be removed by the user. In an aspect, a user filtering mechanism for the notifications can be added. For example, depending on the notification type, the user can choose which type of notification should be ignored. 
         [0096]    In an aspect, the notification system comprises program instructions stored on a computer-readable medium, which when executed by at least one processor, such as the processing logic  702 , operate to provide the functions of the notification system described herein. For example, instructions may be loaded into the device  700  from a computer-readable media, such as a floppy disk, CDROM, memory card, FLASH memory device, RAM, ROM, or any other type of memory device or computer-readable media that interfaces to the device  700 . In another aspect, the instructions may be downloaded into the device  700  from a network resource that interfaces to the device  700 . The instructions, when executed by the processing logic  702 , provide one or more aspects of a notification system as described herein. 
         [0097]      FIG. 8  shows a method  800  for operating a device in an aspect of a notification system. For clarity, the method  800  will be described with reference to the device  700  shown in  FIG. 7 . In one or more aspects, the processing logic  702  executes program instructions to control the device  700  to perform the functions described below. 
         [0098]    At block  802 , one or more notification messages are received. For example, in an aspect, the transceiver logic  702  receives the notification messages over the broadcast channel  716 . 
         [0099]    At block  804 , the received notification messages are filtered. For example, the notification messages are filtered to determine if they are targeted to the device  700 . In an aspect, a received notification message is filtered based on parameters associated with the message. For example, a device identifier, region identifier, sequence number, application version, or other parameter associated with a received notification message is compared to parameters stored in the system parameters  708 . For example, a notification message will pass through the filter if the device identifier in the notification message matches a device identifier stored in the system parameters  708 . 
         [0100]    In another aspect, received notification messages are filtered based on user input parameters. For example, a device user provides user filter parameters using the device resources and interfaces  706 . The notification message filter operates to filter received notifications using the user filter parameters. Notification messages that do not pass through the filter are ignored. In an aspect, the notification message filter  704  operates to filter the received notification messages and pass filtered notification messages to the processing logic  702  for further processing. 
         [0101]    At block  806 , the filtered notification messages are processed. In an aspect, the processing logic  702  operates to process a filtered notification message so that parameters in the filtered notification message are used to update the system parameters  708 . For example, a price change, blackout parameter, or other parameters in the filtered notification message is used to update the system parameters  708 . 
         [0102]    At block  808 , the processed notifications are presented to the device user or stored for later viewing. For example, the processing logic  702  operates to render information about processed notifications to the device user through the device resources and interfaces  708 . In another aspect, the processed notifications are stored in the notification storage  718  for later viewing. 
         [0103]    At block  810 , automatic functions are performed. For example, the processing logic  702  operates to determine an upgrade link in a filtered notification message and automatically contacts a network entity at that link to obtain upgrade information. For example, the filtered notification message comprises an application notification that indicates that a particular application has been upgraded. As part of the filtered notification message, the application notification is associated with an upgrade link address. The processing logic  702  operates to use the upgrade link address to contact a network entity to retrieve the application upgrade. Thus, the processing logic  702  automatically performs an upgrade function based on information in the filtered notification message. It should be noted that any type of interactive functionality may be automatically performed based on information in the filtered notification message. 
         [0104]    Thus, the method  800  operates to provide aspects of a notification system for use at a device. It should be noted that the method  800  illustrates just one implementation and that changes, additions, deletions, or rearrangements of the described functions may be made without deviating from the scope of the described aspects. 
         [0105]      FIG. 9  shows a server  900  suitable for use in aspects of a notification system. The server  900  comprises means  902  for obtaining notification information. For example, in an aspect, the means  902  comprises the notification provider interface  206 . 
         [0106]    The server  900  also comprises means  904  for determining a response factor. For example, in an aspect, the means  904  comprises the processing logic  202 . 
         [0107]    The server  900  also comprises means  906  for generating a notification message. For example, in an aspect, the means  906  comprises the processing logic  202 . 
         [0108]    The server  900  also comprises means  908  for broadcasting a notification message. For example, in an aspect, the means  908  comprises the transceiver logic  208 . 
         [0109]      FIG. 10  shows a device  1000  suitable for use in aspects of a notification system. The device  1000  comprises means  1002  for receiving a notification message. For example, in an aspect, the means  1002  comprises the transceiver logic  708 . 
         [0110]    The device  1000  also comprises means  1004  for filtering a notification message. For example, in an aspect, the means  1004  comprises the message filter  704 . 
         [0111]    The device  1000  also comprises means  1006  for processing a filtered notification message. For example, in an aspect, the means  1006  comprises the processing logic  702 . 
         [0112]    The device  1000  also comprises means  1008  for rendering a notification. For example, in an aspect, the means  1008  comprises the device resources and interfaces  706 . 
         [0113]    Thus, the various illustrative logics, logical blocks, modules, and circuits described in connection with the aspects disclosed herein may be implemented or performed with a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor, but, in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration. 
         [0114]    The steps of a method or algorithm described in connection with the aspects disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor, such that the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in a user terminal. In the alternative, the processor and the storage medium may reside as discrete components in a user terminal. 
         [0115]    The description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these aspects may be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects, e.g., in an instant messaging service or any general wireless data communication applications, without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. The word “exemplary” is used exclusively herein to mean “serving as an example, instance, or illustration.” Any aspect described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other aspects. 
         [0116]    Accordingly, while one or more aspects of a notification system have been illustrated and described herein, it will be appreciated that various changes can be made to the aspects without departing from their spirit or essential characteristics. Therefore, the disclosures and descriptions herein are intended to be illustrative, but not limiting, of the scope of the invention, which is set forth in the following claims.