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Browse Prior Art Database

Method for improving group data confirmation performance in a Telecommunication Systems

IP.com Disclosure Number: IPCOM000242414D
Original Publication Date: 2015-Jul-13
Included in the Prior Art Database: 2015-Jul-13
Document File: 4 page(s) / 160K

Publishing Venue

Motorola

Related People

Tomasz Sumara: AUTHOR [+3]

Related Documents

66405: OTHER

Abstract

The method presented in this publication allows for efficiently confirming delivery of group data sent to a plurality of radio communication devices in a wireless communication system by collecting acknowledges from mobile radios in proximity and sending them in a single packet to the sender. In that way RF resources utilization and delivery time can be significantly reduced. When data message is received by mobile radio it sends confirmation of data message reception to other mobile radios in proximity via short range communication protocols like WiFi, Bluetooth, etc. Then when mobile radio sends acknowledge to the message sender it transmits the confirmation for itself and on behalf of other mobile radio(s) in proximity which indicated data reception via short range communication protocols.

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Method for improving group data confirmation performance

in communication systems

by Paweł Wilkosz, Tomasz Sumara, Paweł Jurzak

Motorola Solutions

 

ABSTRACT

The method presented in this publication allows to efficiently confirm delivery of group data sent to a plurality of radio communication devices in a wireless communication system by collecting acknowledges from mobile radios in proximity and sending them in a single packet to the sender. In that way RF resources utilization and delivery time can be significantly reduced.

When data message is received by mobile radio it sends confirmation of data message reception to other mobile radios in proximity via short range communication protocols like WiFi, Bluetooth, etc.  Then when mobile radio sends acknowledge to the message sender it transmits the confirmation for itself and on behalf of other mobile radio(s) in proximity which indicated data reception via short range communication protocols.

PROBLEM

Wireless communication systems generally include a plurality of communication devices, such as mobile or portable radio devices that are located in multiple sites. Each site may include a set of base stations or repeaters for communicating information such as voice, data, control, and network management traffic between the communication devices and each other. The devices may be further logically divided into various subgroups, known as talkgroups, where each talkgroup can include a number of subscriber radio devices that participate in a group or dispatch call. Such communication systems also support group data messages, where a group data message sent by the subscriber radio device is received by other members of the group via communication links established between multiple end points, such as repeaters and dispatch consoles. Radio devices may use group data to deliver over the air information including text (SDS), firmware, parameters, keys, images, talkgroup management parameters, and the like.

Some wireless communication systems employing group data communication support only unconfirmed delivery of group data. Applications using group data, however, may need to know the success or failure of delivery.

One method for providing confirmation is to have the receiving radio devices provide the confirmations by randomly delaying their acknowledgments of delivery, where the random delay is large enough to reduce the probability of collisions to an acceptable value.

Another way is to reserve an acknowledgment slot in the determined call hang time for each radio communication device and further sends an acknowledgment polling signal to each mobile radio, where the acknowledgment polling signal identifies the respective acknowledgment slot that is reserved for each radio communication device to acknowledge receipt of the group data. The sender accordingly receives an acknowledgment from the radio communication devices during its respective reserved acknowledgment slot.

Utilizing either of the abo...