METHOD AND APPARATUS FOR PARTIAL ELECTRONIC MESSAGE FORWARDING

TECHNICAL FIELD OF THE APPLICATION

The present disclosure generally relates to wireless packet data service networks. More particularly, and not by way of any limitation, the present disclosure is directed to a mobile communications device and related data service network employing a method, apparatus and system for partial forwarding of electronic messages to message recipients and partial bouncing of the electronic messages to the senders.

BACKGROUND

The present disclosure is directed toward efficient utilization of wireless bandwidth between a network and a mobile communication device. The bandwidth available for wireless transmission of messages is limited. Moreover, certain handsets have limited capabilities, which may include limited memory capacity and limited file format handling capacity. A handset may, for example, be unable to handle image, video or audio data which may be included in a message. It is, therefore, desirable to restrict or limit the transmission of extraneous or unnecessary data over a wireless network in order to conserve and optimize available wireless resources and device capabilities. To this end, certain wireless messaging networks impose message size limitations restricting the maximum size of an electronic message transmitted over the wireless network, depending on device capabilities.

SUMMARY OF THE DISCLOSURE

The present disclosure relates to a device, method and system for illustrating partial bouncing of electronic messages within a wireless packet data service network.

According to a first aspect, the present disclosure relates to an electronic message server. The server includes a message receipt module operable to receive at least one

electronic message having a message size from at least one sender; a message parsing module operable to parse at least one message having a message size larger than at least one message size limit into at least a first message portion and a second message portion; and a message portion return module operable to return the second message portion to the sender.

In certain embodiments, the electronic message is received via the internet. In certain embodiments, the electronic message is an electronic mail message. In certain embodiments, at least one message size limit is associated with a mobile communication device. In certain embodiments, the message parsing module is operable to parse the electronic message into at least a first message portion, a second message portion and a third message portion.

In certain embodiments, the message portion return module is operable to return a second message portion and third message portion to the sender. In certain embodiments, the first message portion may be forward via a wireless link selected from a cellular link, a WiFi link, a Bluetooth link, a Zigbee/IEEE 802.15.4 link and an infrared link.

According to a second aspect, the present disclosure relates to a method of managing electronic messages addressed to a mobile communication device. The method includes the steps of receiving from at least one sender at least one electronic message having a message size; parsing at least one message having a message size larger than at least one message size limit into at least a first message portion and a second message portion; and returning at least the second message portion to the sender.

BRIEF DESCRIPTION OF THE DRAWINGS

A more complete understanding of the embodiments of the present disclosure may be had by reference to the following Detailed Description when taken in conjunction with the accompanying drawings wherein:

Figure 1 depicts an exemplary network environment including a wireless packet data service network wherein an embodiment of the present disclosure may be practiced;

Figure 2 depicts a software architectural view of a mobile communications device operable to communicate within a wireless packet data service network according to one embodiment;

Figure 3 depicts a block diagram of a mobile communications device operable to communicate within a wireless packet data service network according to one embodiment; Figure 4 depicts an electronic message server operable to effectuate partial forwarding and bouncing of electronic messages according to one embodiment;

Figure 5 depicts a message flow diagram illustrating partial forwarding and bouncing of electronic messages according to one embodiment; and

Figure 6 depicts a flow chart illustrating partial forwarding and bouncing of electronic messages according to one embodiment.

DETAILED DESCRIPTION OF THE DRAWINGS

A system and method of the present disclosure will now be described with reference to various examples of how the embodiments can best be made and used. Identical reference numerals are used throughout the description and several views of the drawings to indicate identical or corresponding parts, wherein the various elements are not necessarily drawn to scale.

Referring now to the drawings, and more particularly to Figure 1, depicted therein is an exemplary network environment 100 including a wireless packet data service network 1 12 wherein an embodiment of the present system may be practiced.

Although network 100 is shown for the purpose of illustration, it will be understood by those of skill in the art that the present method and system may be implemented within a wide variety of network types. An enterprise network 102, which may be a packet-switched network, can include one or more geographic sites and be organized as a local area network (LAN), wide area network (WAN) or metropolitan area

network (MAN), et cetera, for serving a plurality of corporate users. As discussed above, a particular implementation of the present method and system may or may not include enterprise network 102. Certain embodiments of the present method and system may be implemented within a public Internet access network having users not associated with any particular enterprise.

Within enterprise network 102, a number of application servers 104-1 through 104-N disposed as part of the enterprise network 102 are operable to provide or effectuate a host of internal and external services such as email, video mail, Internet access, corporate data access, messaging, calendaring and scheduling, information management, and the like. Accordingly, a diverse array of personal information appliances such as desktop computers, laptop computers, palmtop computers, et cetera, although not specifically shown in Figure 1, may be operably networked to one or more of the application servers 104-i, i = 1, 2,...,N, with respect to the services supported in the enterprise network 102. Additionally, a remote services server 106 may be interfaced with the enterprise network 102 for enabling a corporate user to access or effectuate any of the services from a remote location using a suitable mobile communications device 1 16. A secure communication link with end-to-end encryption may be established that is mediated through an external IP network, i.e., a public packet-switched network such as the Internet 108, as well as the wireless packet data service network 1 12 operable with mobile communications device 116 via suitable wireless network infrastructure that includes a base station (BS) 1 14. In one embodiment, a trusted relay network 110 may be disposed between the Internet 108 and the infrastructure of wireless packet data service network 112. By way of example, mobile communications device 1 16 may be a data-enabled handheld device capable of receiving and sending messages, web browsing, interfacing with corporate application servers, et cetera.

For purposes of the present disclosure, the wireless packet data service network 1 12 may be implemented in any known or heretofore unknown mobile communications technologies and network protocols. For instance, the wireless packet data service network 112 may be comprised of a General Packet Radio Service

(GPRS) network that provides a packet radio access for mobile devices using the cellular infrastructure of a Global System for Mobile Communications (GSM)-based carrier network. In other implementations, the wireless packet data service network 1 12 may comprise an Enhanced Data Rates for GSM Evolution (EDGE) network, an Integrated Digital Enhanced Network (IDEN), a Code Division Multiple Access (CDMA) network, or any 2 ^nd Generation (2G), 2.5 Generation (2.5G), 3rd Generation (3G) or 4 ^th Generation (4G) network. By way of providing an exemplary embodiment, the teachings of the present disclosure will be illustrated with a GPRS- based carrier network, although those skilled in the art should readily recognize that the scope of the present disclosure is not limited thereby.

Figure 2 depicts a software architectural view of a mobile communications device according to one embodiment. A multi-layer transport stack (TS) 206 is operable to provide a generic data transport protocol for any type of corporate data, including email, via a reliable, secure and seamless continuous connection to a wireless packet data service network. As illustrated in this embodiment, an integration layer 204A is operable as an interface between the radio layer 202 and the transport stack 206 of mobile communications device 1 16. Likewise, another integration layer 204B is provided for interfacing between the transport stack 206 and the user applications 207 supported on the mobile communications device 116, e.g., email 208, calendar/scheduler 210, contact management 212 and browser 214. Although not specifically shown, the transport stack 206 may also be interfaced with the operating system of mobile communications device 1 16. In another implementation, the transport stack 206 may be provided as part of a data communications client module operable as a host-independent virtual machine on a mobile device. The bottom layer (Layer 1) of the transport stack 206 is operable as an interface to the wireless network's packet layer. Layer 1 handles basic service coordination within the exemplary network environment 100 shown in Figure 1. For example, when a mobile communications device roams from one carrier network to another, Layer 1 verifies that the packets are relayed to the appropriate wireless network and that any packets that are pending from the previous network are rerouted

to the current network. The top layer (Layer 4) exposes various application interfaces to the services supported on the mobile communications device. The remaining two layers of the transport stack 206, Layer 2 and Layer 3, are responsible for datagram segmentation/reassembly and security, compression and routing, respectively. Figure 3 depicts a block diagram of a mobile communications device according to one embodiment. It will be recognized by those skilled in the art upon reference hereto that although an embodiment of mobile communications device 1 16 may comprise an arrangement similar to one shown in Figure 3, there can be a number of variations and modifications, in hardware, software or firmware, with respect to the various modules depicted. Accordingly, the arrangement of Figure 3 should be taken as illustrative rather than limiting with respect to the embodiments of the present disclosure.

A microprocessor 302 providing for the overall control of an embodiment of Mobile communications device 1 16 is operably coupled to a communication subsystem 304 which includes a receiver 308 and transmitter 314 as well as associated components such as one or more local oscillator (LO) modules 310 and a processing module such as a digital signal processor 312. As will be apparent to those skilled in the field of communications, the particular design of the communication module 304 may be dependent upon the communications network with which the mobile communications device 116 is intended to operate.

In one embodiment, the communication module 304 is operable with both voice and data communications. Regardless of the particular design, however, signals received by antenna 306 through base station 114 are provided to receiver 308, which may perform such common receiver functions as signal amplification, frequency down conversion, filtering, channel selection, analog-to-digital (A/D) conversion, and the like. Similarly, signals to be transmitted are processed, including modulation and encoding, for example, by digital signal processor 312, and provided to transmitter 314 for digital-to-analog (D/A) conversion, frequency up conversion, filtering, amplification and transmission over the air-radio interface via antenna 316.

Microprocessor 302 also interfaces with further device subsystems such as auxiliary input/output (I/O) 318, serial port 320, display 322, keyboard 324, speaker 326, microphone 328, random access memory (RAM) 330, a short-range communications subsystem 332, and any other device subsystems generally labeled as reference numeral 333. To control access, a Subscriber Identity Module (SIM) or Removable User Identity Module (RUIM) interface 334 is also provided in communication with the microprocessor 302.

In one implementation, SIM/RUIM interface 334 is operable with a SIM/RUIM card having a number of key configurations 344 and other information 346 such as identification and subscriber-related data. Operating system software and transport stack software may be embodied in a persistent storage module (i.e., nonvolatile storage) such as flash memory 335. In one implementation, flash memory 335 may be segregated into different areas, e.g., storage area for computer programs 336 as well as data storage regions such as device state 337, address book 339, other personal information manager (PIM) data 341, and other data storage areas generally labeled as reference numeral 343.

Figure 4 depicts a message server 400 according to one aspect of the present disclosure. Message server 400, disposed within a network between a sender 402 and a mobile communication device 116, incorporates a central processing unit 404, a memory module 406, a message receipt module 408, a message size comparison module 410, a message parsing module 412, a message portion forwarding module 414 and a message portion return module 416. All or a portion of the functionality represented by message server 400 may in a particular embodiment be disposed within any one or more of enterprise network 102, Internet 108, relay network 1 10 or wireless network 112 of Figure 1, or on a computer or set of computers not shown within Figure 1, including but not limited to an individual user's personal desktop computer or a computer operated by an Internet or cellular telephone service provider. Message server 400 may represent all or a portion of any one or more of the servers depicted in Figure 1, including but not limited to any of application servers 104-1...104-N and remote services server 106. Generally, modules

408, 410, 412, 414, 416 will be implemented as software routines resident in a memory such as memory module 406. In certain embodiments, one or more of modules 408, 410, 412, 414, 416 may represent a separate and independent physical module. Further, although modules 408, 410, 412, 414, 416 are shown as being disposed within a common message server 400, those of skill in the art will recognize that all or a portion of modules 408, 410, 412, 414, 416 may be disposed within separate operational units, which may be located at separate geographical locations.

Central processing unit 404 coordinates and controls the operation of 400 and its various modules. Memory module 406 stores information required by modules 408, 410, 412, 414, 416. Message receipt module 408 receives incoming messages, including but not limited to messages originating from sender 402. Message size comparison module 410 compares the size of each incoming message to a message size limit associated with mobile communication device 1 16. Messages having a message size within the respective message size limit are moved directly to message portion forwarding module 414 for delivery to mobile communication device 116. Messages having a message size greater than the message size limit are diverted to message parsing module 412.

Message parsing module 412 parses each oversize message into a set of two or more message portions, each message portion having a size at or below the message size limit for the respective recipient. In one application, the first message portion is sent to message portion forwarding module 414 for forwarding to mobile communication device 1 16, while the remaining portions are sent to message portion return module 416 for return to sender 402. Alternate embodiments may divert the message portions according to alternate schemes. Figure 5 is a message flow diagram showing the flow of electronic messages to and from the message server 400 depicted in Figure 4. An oversized electronic message is sent over the Internet 108 from sender 402 to message server 400, as represented by messages 500 and 502. For each recipient which will receive a wireless message through message server 400, there will be a maximum message size parameter associated with that recipient within message server 400. Message

server 400 receives message 502, identifies that it is an oversized message, and parses it into a first message portion 504, second message portion 506 and third message portion 508, each portion being smaller than the maximum message size associated with the recipient. Appropriate message header information may be attached to second and third message portions 506, 508 as necessary to facilitate the handling thereof. In certain embodiments, a "bounce back" message may included in the content forwarded to mobile communication device 116 or returned to sender 402, either as a part of message portions 504, 506, 508 or as one or more separate messages. A "bounce back" message may inform the message recipient or sender 402 that the first message portion 504 has been forwarded to the mobile communication device 116, but that the remaining message portions 506, 508 have not been forwarded and are being returned to sender 402 in appropriate sizes for wireless transmission. Subsequent to the bouncing of second and third message portions 506, 508, first message portion 504 is forwarded to mobile communication device 1 16 via wireless network 1 12, while second and third message portions 506 and 508 are bounced to sender 402 via the Internet 108. First message portion 504 is forwarded to base station 1 14 by wireless network 1 12 as message 510 and from base station 114 to mobile communication device 1 16 as message 512. In a similar manner, second and third message portions 506, 508 are relayed from the Internet 108 back to sender 402, as represented by messages 514, 516.

Figure 6 depicts a flowchart of one embodiment of the process of message parsing, forwarding and return. An electronic message is first received (block 600). The size of the received electronic message is then compared to a message size limit associated with the recipient (block 602) and a determination is made as to whether the size of the message exceeds the appropriate message size limit for that recipient (decision block 604). If the size of the message is within the message size limit, the electronic message is forwarded to the mobile communication device associated with the recipient (block 606). If the size of the message exceeds the appropriate message size limit, the electronic message is parsed in multiple message portions (block 608), the first message portion is forwarded to the mobile communication device (block

610), and the remaining message portions are bounced to the sender of the electronic message (block 612). As noted above, the step of forwarding the first message portion to the mobile communication device may include informing the recipient of the status of the partial forwarding and bouncing process. Similarly, the step of bouncing the remaining message portions to the sender may include informing the sender of the status of the partial forwarding and bouncing process along with instructions to the sender as to re-sending the remaining message portions.

It is believed that the operation and construction of the embodiments of the present disclosure will be apparent from the Detailed Description set forth above. While the exemplary embodiments shown and described may have been characterized as being preferred, it should be readily understood that various changes and modifications could be made therein without departing from the scope of the present disclosure as set forth in the following claims.