WO2001049050A2 - Broadcast short message service - Google Patents

Broadcast short message service Download PDF

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Publication number
WO2001049050A2
WO2001049050A2 PCT/US2000/042585 US0042585W WO0149050A2 WO 2001049050 A2 WO2001049050 A2 WO 2001049050A2 US 0042585 W US0042585 W US 0042585W WO 0149050 A2 WO0149050 A2 WO 0149050A2
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WO
WIPO (PCT)
Prior art keywords
short message
mobile communication
communication units
selected ones
receive
Prior art date
Application number
PCT/US2000/042585
Other languages
French (fr)
Other versions
WO2001049050A3 (en
Inventor
Uday R. Dodla
Original Assignee
Ericsson Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ericsson Inc. filed Critical Ericsson Inc.
Priority to AU47114/01A priority Critical patent/AU4711401A/en
Publication of WO2001049050A2 publication Critical patent/WO2001049050A2/en
Publication of WO2001049050A3 publication Critical patent/WO2001049050A3/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/12—Messaging; Mailboxes; Announcements
    • H04W4/14—Short messaging services, e.g. short message services [SMS] or unstructured supplementary service data [USSD]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H04W4/08—User group management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/18—Service support devices; Network management devices
    • H04W88/184—Messaging devices, e.g. message centre

Definitions

  • the present invention is directed toward wireless communication systems, and more particularly toward digital wireless office systems.
  • Wireless communications systems such as cellular telephone systems and digital wireless office systems are well known, though the particular modes of operation of such systems are not always understood by the users.
  • Such systems involve central or base stations covering a selected area with a transceiver which will communicate with portable communication units (such as cellular telephones) which are turned on and located in the selected area.
  • Some such communication systems include short message services which allow a text message to be sent to selected ones of the portable communication units for display on the display screens of those units.
  • a text message which is desired to be sent to selected portable communication units is input into an external message center which sends the message into the cellular network.
  • Such input is usually generated from an external management interface via the World Wide Web or via email by an end user. That input message is then transmitted to a message center, which stores and sends the message to the cellular network for transmission to the portable communication unit after necessary data formatting.
  • TDMA time division multiple access
  • a short message delivery system for use with a wireless communication system having a wireless transceiver in commi nication with a plurality of mobile communication units each having a display.
  • the system includes an input device adapted to selectively input short messages with instructions for delivery of short messages to selected ones of the plurality of mobile communication units, a message center connected to the input device, and a processor in communication with the message center and connected to the wireless transceiver.
  • the processor is adapted to provide the wireless transceiver with the short messages and instructions for transmitting each short message simultaneously to each of the selected ones of the plurality of mobile communication units.
  • the processor may be a part of a mobility server connected to the message center and adapted to convey communication instructions to the wireless transceiver.
  • the processor may determine which of the selected ones of the plurality of mobile communication units are able to receive the short message, and periodically provide the wireless transceiver with the short messages and instructions for transmitting each short message to the selected ones of the plurality of mobile communication units which were not previously determined by the processor to be able to receive the short message. Further to this, the processor may provide the wireless transceiver with the short messages and instructions for transmitting each short message to only the selected ones of the plurality of mobile communication units which were determined by the processor to be able to receive the short message.
  • the processor may determine that the selected ones of the plurality of mobile communication units which were not previously determined by the processor to be able to receive the short message have become able to receive the short message, and at that time provide the wireless transceiver with the short messages and instructions for transmitting each short message to the selected ones of the plurality of mobile communication units which were not previously determined by the processor to be able to receive the short message.
  • the transceiver may receive acknowledgment signals from the mobile communication units which receive the short message, with the processor periodically providing the wireless transceiver with the short messages and instructions for transmitting each short message to the selected ones of the plurality of mobile communication units from which acknowledgment signals have not been received by the transceiver.
  • a wireless communication system including an input device adapted to selectively input short messages with instructions for delivery of short messages to selected ones of a plurality of mobile communication units, a wireless transceiver adapted to communicate with the plurality of mobile communication units, a message center connected to the input device, and a processor in communication with the message center and connected to the wireless transceiver.
  • the processor is adapted to provide the wireless transceiver with the short messages and instructions for transmitting each short message simultaneously to each of the selected ones of the plurality of mobile communication units.
  • the wireless transceiver may use TDMA.
  • the input device may comprise a keyboard and a display.
  • the communication units may include a display and the short messages may be shown on the display when received from the transceiver.
  • the wireless communication system may comprise a private wireless office system.
  • a method of communicating short messages to a plurality of mobile communication units including the steps of selectively inputting a short message with instructions for delivery of short messages to selected ones of the plurality of mobile communication units, formatting the short message with instructions for transmission, and simultaneously transmitting the short message to the selected ones of the plurality of mobile communication units.
  • the method may also include the steps of prior to the simultaneous transmitting step, determining which of the selected ones of the plurality of mobile communication units are able to receive the short message, and periodically repeating the step of simultaneously transmitting the short message by transmitting the short message to the selected ones of the plurality of mobile communication units which were not able to receive the short message during any of the previous transmitting steps.
  • the method may also include the steps of determining which of the selected ones of the plurality of mobile communication units did not receive the short message, determining when the selected ones of the plurality of mobile communication units which did not receive the short message are able to receive short messages, and transmitting the short message to the selected ones of the plurality of mobile communication units which did not receive the short message when it is determined that they are able to receive short messages.
  • Figure 1 is a diagram of a communication system using the present invention.
  • Figure 2 is a flow chart of the method of operation of the system of the present invention.
  • a wireless communication system 10 incorporating the present invention is illustrated in Fig. 1.
  • the system 10 which may for example be a digital wireless office system, includes a message center 20, mobile communication units 26, an input device 30, a mobility server 40 and a wireless transceiver 50.
  • the system 10 includes a message center 20 which receives a Short Message for transmission by the system, including instructions about which mobile communication units 26 (e.g., cellular telephones) should receive the
  • the communication units 26 include a display screen 28 for displaying received Short Messages.
  • a suitable input device 30 such as a keyboard is provided to permit input of a desired short message as well as instructions for delivery of the message. For example, if a message is to be sent to a selected group of employees that a meeting will be had at 2:00 pm that day in the office conference room, the short message might be "WORKING GROUP MTG, 2 PM, CONF. RM.” input via the keyboard.
  • Message delivery instructions are also entered through the input device 30, for example, by identifying the phones of each of the people in that working group, or by selecting a predefined list in which those people are grouped.
  • the group can include a single unit, multiple units, or all units with which the system 10 is in communication, and may involve a single person, or multiple persons (multiple persons may be contacted via a single unit in their area, or a single person may be contacted via multiple units where that person is recognized as being contacted through different units).
  • the system 10 described herein may be used with all such possible circumstances, the improvements of the present invention relate specifically to communication of short messages to multiple mobile communication units.
  • the message center 20 transfers the short message (and delivery instructions) to the mobility server 40, which is a suitable processing device for handling received and transmitted signals such as is generally known in the art, and includes a processor 44.
  • the processor 44 formats the data (the short message and its delivery instructions) in accordance with the transmission system used by the system 10, such as TDMA, and the mobility server 40 then passes the formatted data to the transceiver 50, which then simultaneously transmits the short message to all of the selected mobile communication units 26a.
  • a short message When a short message is entered at the input device 30, it is passed on by the message center 20 to the mobility server 40, which receives the short message together with instructions about where the messages are to be delivered (a single unit 26, a selected group of units 26a, or all of the units 26) (box 62).
  • the mobility server 40 determines where the short messages are to be delivered based on the received instructions (decision box 64). If the Short Message is to be delivered to just one of the communication units 26, the message is sent via the wireless transceiver 50 (box 66) in a conventional manner. If, however, the instructions indicate that the Short Message is to be delivered to a selected group of communication units 26a (less than all the units 26), the Short Message is simultaneously broadcast to all of the communication units 26a in the selected group (box 68). Similarly, if the instructions indicate that the Short Message is to be delivered to all of the communication units 26a registered with the system 10, the Short Message is simultaneously broadcast to all of the communication units 26 (box 70).
  • the Short Message may be delivered to the intended recipients in the most expeditious manner, without a requirement that the message be retransmitted over and over such as is accomplished in the prior art. This also virtually eliminates the risk of error which could conceivably arise from numerous retransmissions if each repetition of the Short Message is based on the Short Message which was transmitted immediately before to another unit 26 of the group (i.e., where minor errors in each iteration could conceivably accumulate into a significant error).
  • the invention may be used with a system in which the communication units 26 register with the system when active and able to receive transmissions (as is conventional).
  • the mobi ty server 40 saves the Short Message for later transmission to all such communication units 26 which were unable to receive it during the earlier transmission
  • Such registration information may also be advantageously used during the initial transmission of the Short Message by allowing the message center 40 to use system resources to transmit the Short Message to only those units 26 which are recognized as likely to receive it at that time
  • the saved Short Message may then be transmitted to the units 26 in the described manner (one at a time unless more than one unit 26 thereafter register at the same time)
  • the system 10 may require an acknowledgment signal from the communication units 26 when they have properly received the Short Message, with the failure to receive a timely acknowledgment from particular communication units 26 used as an indication that the Short Message must be retransmitted to those units 26 in a manner such as described above
  • the above described invention has particularly advantageous applicability to private office systems such as digital wireless office systems, as this functionality can easily be obtained with such systems at minimal cost External message centers, which are often expensive are not required
  • a system 10 which incorporates this invention may also use this service for load testing and verification (to determine how much additional communication traffic the system 10 is capable of handling by transmitting test messages to see whether a system overload occurs).

Abstract

An office wireless communication system includes an input device such as a keyboard adapted to selectively input short messages with instructions for delivery of short messages to selected ones of a plurality of mobile communication units having message displays, a wireless TDMA transceiver adapted to communicate with the plurality of mobile communication units, a message center connected to the input device, and a processor in communication with the message center and connected to the wireless transceiver. The processor is adapted to provide the wireless transceiver with the short messages and instructions for transmitting each short message simultaneously to each of the selected ones of the plurality of mobile communication units.

Description

BROADCAST SHORT MESSAGE SERVICE
BACKGROUND OF THE INVENTION
The present invention is directed toward wireless communication systems, and more particularly toward digital wireless office systems. Wireless communications systems such as cellular telephone systems and digital wireless office systems are well known, though the particular modes of operation of such systems are not always understood by the users. Generally speaking, such systems involve central or base stations covering a selected area with a transceiver which will communicate with portable communication units (such as cellular telephones) which are turned on and located in the selected area.
Some such communication systems include short message services which allow a text message to be sent to selected ones of the portable communication units for display on the display screens of those units. With these systems, a text message which is desired to be sent to selected portable communication units is input into an external message center which sends the message into the cellular network. Such input is usually generated from an external management interface via the World Wide Web or via email by an end user. That input message is then transmitted to a message center, which stores and sends the message to the cellular network for transmission to the portable communication unit after necessary data formatting.
With time division multiple access (TDMA) systems, such messages are sent to a specific portable communication unit. If the same message needs to be sent to other units, the same message is sent individually to each of the other units one at a time.
It is desirable to send such messages quickly and efficiently.
SUMMARY OF THE INVENTION
In one aspect of the present invention, a short message delivery system is provided for use with a wireless communication system having a wireless transceiver in commi nication with a plurality of mobile communication units each having a display. The system includes an input device adapted to selectively input short messages with instructions for delivery of short messages to selected ones of the plurality of mobile communication units, a message center connected to the input device, and a processor in communication with the message center and connected to the wireless transceiver. The processor is adapted to provide the wireless transceiver with the short messages and instructions for transmitting each short message simultaneously to each of the selected ones of the plurality of mobile communication units. The processor may be a part of a mobility server connected to the message center and adapted to convey communication instructions to the wireless transceiver.
Also, the processor may determine which of the selected ones of the plurality of mobile communication units are able to receive the short message, and periodically provide the wireless transceiver with the short messages and instructions for transmitting each short message to the selected ones of the plurality of mobile communication units which were not previously determined by the processor to be able to receive the short message. Further to this, the processor may provide the wireless transceiver with the short messages and instructions for transmitting each short message to only the selected ones of the plurality of mobile communication units which were determined by the processor to be able to receive the short message. Also, the processor may determine that the selected ones of the plurality of mobile communication units which were not previously determined by the processor to be able to receive the short message have become able to receive the short message, and at that time provide the wireless transceiver with the short messages and instructions for transmitting each short message to the selected ones of the plurality of mobile communication units which were not previously determined by the processor to be able to receive the short message. The transceiver may receive acknowledgment signals from the mobile communication units which receive the short message, with the processor periodically providing the wireless transceiver with the short messages and instructions for transmitting each short message to the selected ones of the plurality of mobile communication units from which acknowledgment signals have not been received by the transceiver. In another aspect of the present invention, a wireless communication system is provided, including an input device adapted to selectively input short messages with instructions for delivery of short messages to selected ones of a plurality of mobile communication units, a wireless transceiver adapted to communicate with the plurality of mobile communication units, a message center connected to the input device, and a processor in communication with the message center and connected to the wireless transceiver. The processor is adapted to provide the wireless transceiver with the short messages and instructions for transmitting each short message simultaneously to each of the selected ones of the plurality of mobile communication units.
In addition to separate variations usable with this aspect of the invention and already described in connection with the first mentioned aspect of the invention, the wireless transceiver may use TDMA. Also, the input device may comprise a keyboard and a display. Further, the communication units may include a display and the short messages may be shown on the display when received from the transceiver. The wireless communication system may comprise a private wireless office system.
In still another aspect of the present invention, a method of communicating short messages to a plurality of mobile communication units is provided, including the steps of selectively inputting a short message with instructions for delivery of short messages to selected ones of the plurality of mobile communication units, formatting the short message with instructions for transmission, and simultaneously transmitting the short message to the selected ones of the plurality of mobile communication units. The method may also include the steps of prior to the simultaneous transmitting step, determining which of the selected ones of the plurality of mobile communication units are able to receive the short message, and periodically repeating the step of simultaneously transmitting the short message by transmitting the short message to the selected ones of the plurality of mobile communication units which were not able to receive the short message during any of the previous transmitting steps.
The method may also include the steps of determining which of the selected ones of the plurality of mobile communication units did not receive the short message, determining when the selected ones of the plurality of mobile communication units which did not receive the short message are able to receive short messages, and transmitting the short message to the selected ones of the plurality of mobile communication units which did not receive the short message when it is determined that they are able to receive short messages.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a diagram of a communication system using the present invention; and
Figure 2 is a flow chart of the method of operation of the system of the present invention.
DETAILED DESCRIPTION OF THE INVENTION
A wireless communication system 10 incorporating the present invention is illustrated in Fig. 1. The system 10, which may for example be a digital wireless office system, includes a message center 20, mobile communication units 26, an input device 30, a mobility server 40 and a wireless transceiver 50.
The system 10 includes a message center 20 which receives a Short Message for transmission by the system, including instructions about which mobile communication units 26 (e.g., cellular telephones) should receive the
Short Message. The communication units 26 include a display screen 28 for displaying received Short Messages. A suitable input device 30 such as a keyboard is provided to permit input of a desired short message as well as instructions for delivery of the message. For example, if a message is to be sent to a selected group of employees that a meeting will be had at 2:00 pm that day in the office conference room, the short message might be "WORKING GROUP MTG, 2 PM, CONF. RM." input via the keyboard. Message delivery instructions are also entered through the input device 30, for example, by identifying the phones of each of the people in that working group, or by selecting a predefined list in which those people are grouped. The group can include a single unit, multiple units, or all units with which the system 10 is in communication, and may involve a single person, or multiple persons (multiple persons may be contacted via a single unit in their area, or a single person may be contacted via multiple units where that person is recognized as being contacted through different units). Though the system 10 described herein may be used with all such possible circumstances, the improvements of the present invention relate specifically to communication of short messages to multiple mobile communication units.
The message center 20 transfers the short message (and delivery instructions) to the mobility server 40, which is a suitable processing device for handling received and transmitted signals such as is generally known in the art, and includes a processor 44. The processor 44 formats the data (the short message and its delivery instructions) in accordance with the transmission system used by the system 10, such as TDMA, and the mobility server 40 then passes the formatted data to the transceiver 50, which then simultaneously transmits the short message to all of the selected mobile communication units 26a. In this manner, it has been found that delivery of the short message may be most efficiently and quickly transmitted to many different recipients, and it has been found that this may be accomplished without overloading typical digital wireless office systems which may be in communication with a large number of different units 26 at the same time (e.g., with different voice communications as well as while maintaining registration of the units 26 in the covered area. This method of operation is illustrated in Fig. 2. The mobility server 40 is in a state of readiness s box 60), waiting to receive a short message which is to be delivered. When a short message is entered at the input device 30, it is passed on by the message center 20 to the mobility server 40, which receives the short message together with instructions about where the messages are to be delivered (a single unit 26, a selected group of units 26a, or all of the units 26) (box 62).
The mobility server 40 determines where the short messages are to be delivered based on the received instructions (decision box 64). If the Short Message is to be delivered to just one of the communication units 26, the message is sent via the wireless transceiver 50 (box 66) in a conventional manner. If, however, the instructions indicate that the Short Message is to be delivered to a selected group of communication units 26a (less than all the units 26), the Short Message is simultaneously broadcast to all of the communication units 26a in the selected group (box 68). Similarly, if the instructions indicate that the Short Message is to be delivered to all of the communication units 26a registered with the system 10, the Short Message is simultaneously broadcast to all of the communication units 26 (box 70). By simultaneously broadcasting the Short Message to all of the intended recipients at the same time, the Short Message may be delivered to the intended recipients in the most expeditious manner, without a requirement that the message be retransmitted over and over such as is accomplished in the prior art. This also virtually eliminates the risk of error which could conceivably arise from numerous retransmissions if each repetition of the Short Message is based on the Short Message which was transmitted immediately before to another unit 26 of the group (i.e., where minor errors in each iteration could conceivably accumulate into a significant error).
According to another aspect, the invention may be used with a system in which the communication units 26 register with the system when active and able to receive transmissions (as is conventional). In that case, where one or more of the communication units 26 in the selected group which is to receive the Short Message are not registered at the time of initial broadcasting, the mobi ty server 40 saves the Short Message for later transmission to all such communication units 26 which were unable to receive it during the earlier transmission Such registration information may also be advantageously used during the initial transmission of the Short Message by allowing the message center 40 to use system resources to transmit the Short Message to only those units 26 which are recognized as likely to receive it at that time Specifically, when those units 26 which have not previously received the Short Message thereafter register with the system (indicating that they are then active and able to receive transmissions), the saved Short Message may then be transmitted to the units 26 in the described manner (one at a time unless more than one unit 26 thereafter register at the same time) Alternatively, however, either as a specific instruction with the Short Message or as a system default condition, the Short Message can later be rebroadcast at selected times to those communication units 26 which did not receive the Short Message during the initial broadcast (e g rather than immediately upon registration of each unit 26 which was not previously able to receive the Short Message, subsequent transmission occurs at selected time intervals, or when a selected number of the communication units
26 which did not receive the Short Message have registered with the system 10)
As another alternative, the system 10 may require an acknowledgment signal from the communication units 26 when they have properly received the Short Message, with the failure to receive a timely acknowledgment from particular communication units 26 used as an indication that the Short Message must be retransmitted to those units 26 in a manner such as described above The above described invention has particularly advantageous applicability to private office systems such as digital wireless office systems, as this functionality can easily be obtained with such systems at minimal cost External message centers, which are often expensive are not required A system 10 which incorporates this invention may also use this service for load testing and verification (to determine how much additional communication traffic the system 10 is capable of handling by transmitting test messages to see whether a system overload occurs).
Still other aspects, objects, and advantages of the present invention can be obtained from a study of the specification, the drawings, and the appended claims. It should be understood, however, that the present invention could be used in alternate forms where less than all of the objects and advantages of the present invention and preferred embodiment as described above would be obtained.

Claims

1. A short message delivery system for use with a wireless communication system having a wireless transceiver in communication with a plurality of mobile communication units, comprising: an input device selectively inputting short messages with instructions for delivery of said short messages to selected ones of said plurality of mobile communication units; a message center connected to said input device; and a processor in communication with said message center and coupled to said wireless transceiver, said processor providing said wireless transceiver with said short messages and instructions for transmitting each short message substantially simultaneously to each of said selected ones of said plurality of mobile communication units.
2. The short message delivery system of claim 1 , wherein said processor is in a mobility server coupled to said message center, said processor conveying communication instructions to said wireless transceiver.
3. The short message delivery system of claim 1 , wherein said selected ones of said plurality of mobile communication units are all of said plurality of mobile communication units.
4. The short message delivery system of claim 1 , wherein said processor: determines which of said selected ones of said plurality of mobile communication units are able to receive said short message; and periodically provides said wireless transceiver with said short messages and instructions for transmitting each short message to said selected ones of said plurality of mobile communication units which were not previ ously determined by the processor to be able to receive said short message.
5. The short message delivery system of claim 4, wherein said processor provides said wireless transceiver with said short messages and instructions for transmitting each short message to only said selected ones of said plurality of mobile communication units which were determined by the processor to be able to receive said short message.
6. The short message delivery system of claim 4, wherein when said processor determines that said selected ones of said plurality of mobile communication units which were not previously determined by the processor to be able to receive said short message have become able to receive said short message, said processor provides said wireless transceiver with said short messages and instructions for transmitting each short message to said selected ones of said plurality of mobile communication units which were not previously determined by the processor to be able to receive said short message.
7. The short message delivery system of claim 1 , wherein said transceiver receives acknowledgment signals from said mobile communication units which receive said short message; and said processor periodically provides said wireless transceiver with said short messages and instructions for transmitting each short message to said selected ones of said plurality of mobile communication units from which acknowledgment signals have not been received by said transceiver.
8. A wireless communication system, comprising: an input device selectively inputting short messages with instructions for delivery of said short messages to selected ones of a plurality of mobile communication units; a wireless transceiver communicating with said plurality of mobile communication units; a message center coupled to said input device; a processor in communication with said message center and connected to said wireless transceiver, said processor providing said wireless transceiver with said short messages and instructions for transmitting each short message substantially simultaneously to each of said selected ones of said plurality of mobile communication units.
9. The wireless communication system of claim 8, wherein said wireless transceiver uses TDMA.
10. The wireless communication system of claim 8, wherein said selected ones of said plurality of mobile communication units are all of said plurality of mobile communication units.
11. The wireless communication system of claim 8, wherein said input device comprises a keyboard and display.
12. The wireless communication system of claim 8, wherein said communication units include a display and said short messages are shown on said display when received from said transceiver.
13. The wireless communication system of claim 8, wherein said wireless communication system is a private wireless office system.
14. The wireless communication system of claim 8, wherein said processor: determines which of said selected ones of said plurality of mobile communication units are able to receive said short messages; and periodically provides said wireless transceiver with said short messages and instructions for transmitting each short message to said selected ones of said plurality of mobile communication units which were not previously determined by the processor to be able to receive said short message.
15. The wireless communication system of claim 14, wherein said processor provides said wireless transceiver with said short messages and instructions for transmitting each short message to only said selected ones of said plurality of mobile communication units which were determined by the processor to be able to receive said short message.
16. The wireless communication system of claim 14, wherein when said processor determines that said selected ones of said plurality of mobile communication units which were not previously determined by the processor to be able to receive said short message have become able to receive said short message, said processor provides said wireless transceiver with said short messages and instructions for transmitting each short message to said selected ones of said plurality of mobile communication units which were not previously determined by the processor to be able to receive said short message.
17. The wireless communication system of claim 8, wherein said wireless transceiver receives acknowledgment signals from said mobile communication units which receive said short message; and said processor periodically provides said wireless transceiver with said short messages and instructions for transmitting each short message to said selected ones of said plurality of mobile communication units from which acknowledgment signals have not been received by said transceiver.
18. A method of communicating short messages to a plurality of mobile communication units, comprising: selectively inputting a short message with instructions for delivery of said short message to selected ones of said plurality of mobile communication units; formatting said short message with instructions for transmission; transmitting said short message substantially simultaneously to said selected ones of said plurality of mobile communication units.
19. The method of claim 18, further comprising: prior to transmitting said short message substantially simultaneously to said selected ones of said plurality of mobile communication units, determining which of said selected ones of said plurality of mobile communication units are able to receive said short message; and periodically transmitting said short message substantially simultaneously to said selected ones of said plurality of mobile communication units which were not able to receive said short message during any of said previous transmitting steps.
20. The method of claim 18, wherein said selected ones of said plurality of mobile communication units are all of said plurality of mobile communication units.
21. The met od of claim 18, further comprising: determining which of said selected ones of said plurality of mobile communication units did not receive said short message; determining when said selected ones of said plurality of mobile communication units which did not receive said short message are able to receive short messages; and transmitting said short message to said selected ones of said plurality of mobile communication units which did not receive said short message when it is determined that they are able to receive short messages.
22. The method of claim 21 , wherein determining which of said selected ones of said plurality of mobile communication units did not receive said short message comprises: receiving acknowledgment signals from said mobile communication units which receive said short message; and determining which of said mobile communication units of said selected ones of said plurality of mobile communications units were not said mobile communication units from which said acknowledgment signals were received.
PCT/US2000/042585 1999-12-29 2000-12-06 Broadcast short message service WO2001049050A2 (en)

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CN100433772C (en) * 2002-08-26 2008-11-12 中兴通讯股份有限公司 System and method of realizing mobile office work using short message
WO2009155983A1 (en) 2008-06-26 2009-12-30 Nokia Siemens Networks Oy Charging for short message delivery
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JP2011527528A (en) * 2008-06-26 2011-10-27 ノキア シーメンス ネットワークス オサケユキチュア Billing for short message delivery
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