US 7,613,141 B2Granted

Bluetooth broadcasting method

AssigneeElectronics and Telecommunications Research Institute

InventorsJeen Hur, Sangbaek Han, Sun-Hee Kim, Seong-Su Park

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Abstract

The present invention provides an efficient data transmission method in BLUETOOTH broadcasting. The method of BLUETOOTH broadcasting generates a first broadcast packet and determines whether a slot is included in an access window. In a case where the slot is not included in the access window, a service interface (SI) information value is set to the assignment information of the slot. The first broadcast packet is then transmitted. A second broadcast packet is then generated and it is determined whether a slot is included in the access window. If the slot is not included in the access window, the SI information value is set to zero. The second broadcast packet is then transmitted. A slave receives the broadcast packets and obtains the SI information values. It is then determined whether the slave transmits data at the next odd numbered slot.

Claims6

Dependent claims

A Bluetooth broadcasting method, comprising the steps of:

(a) at a master, generating a broadcast packet to include assignment information and header information and transmitting the broadcast packet, wherein the assignment information includes information about assigning a slave that is available to transmit data at a next odd slot number when a slot of the broadcast packet is not included in an access window for transmitting, and the header information are included in packet headers comprising FLOW, ARQN and SEQN and the header information contains information about maintaining ACL link between the master and the slave;
(b) at the master, generating a broadcast packet by including notification information and transmitting the broadcast packet, wherein the notification information contains information to indicate whether no slave is available to transmit data at next odd slot number in response to a slot of the broadcast packet being included in an access window for transmitting, the assignment information is stored behind a CRC bit, wherein the assignment information stored behind the CRC bit is set to an active member address of the slot of the broadcast packet;
and
(c) at the slave, receiving the broadcast packets, obtaining the assigning information, header information or notification information included in the broadcast packet and determining whether or not the slave transmits data.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 10/736,963Filed 15 Dec 2003
Priority: KR 10-2002-008216621 Dec 2002
Published: US 2004/0148426 A129 Jul 2004
Granted: 3 Nov 2009
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

H04L 12/1881
For broadcast or conference , e.g. multicast: with schedule organisation, e.g. priority, sequence management
H04W 4/06
Services specially adapted for wireless communication networks; Facilities therefor: selective distribution of broadcast services, e.g. multimedia…
H04W 72/30
Local resource management: resource management for broadcast services
H04L 12/189
For broadcast or conference , e.g. multicast: in combination with wireless systems

Family

US 2004/0148426 A1Pre-grant publication · published 29 Jul 2004
US 7,613,141 B2This patent

From the US filing history. Foreign family members aren’t listed.

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