US 7,623,483 B2Granted

Radio communication scheme for providing multimedia broadcast and multicast services (MBMS)

AssigneeLG Electronics Inc.

InventorsSeung June Yi, Young Dae Lee, So Young Lee

Life of this patent

Estimating the term…

Loading patent…

Abstract

A radio communication scheme applicable to UMTS providing packet data services, such as multimedia broadcast and multicast services (MBMS), to one or more users by modifying (augmenting) certain existing radio communication protocols while employing a new transport channel (a point-to-multipoint DSCH), and/or by establishing new physical downlink shared channels (C-PDSCH and D-PDSCH). An RLC layer is provided in a single CRNC so that the same MBMS can be transmitted to a plurality of terminals via a point-to-multipoint DSCH, without having to repetitively provide many RLC layers in many SRNCs. Alternatively, a C-PDSCH (physical downlink shared channel for control) and a D-PDSCH (physical downlink shared channel for data) are established to allow periodic transmission of MBMS, permitting users to simultaneously access one or more MBMS.

Claims18

Dependent claims

A network having a controller and a base station, and providing a multimedia broadcast/multicast service (MBMS) service, the network comprising:

a Radio Link Control (RLC) layer configured to receive data from an upper layer;
a Medium Access Control (MAC) layer configured to add a header to the data received from the RLC layer;
and
a physical (PHY) layer configured to receive the header added data from the MAC layer to transmit the header added data to a plurality of terminals via a first downlink physical channel, wherein a second downlink physical channel is provided to transmit control information to the plurality of terminals,
wherein the second downlink physical channel comprises a Transport Format Combination Indicator (TFCI) field and a Pilot field to transmit the control information,
wherein the controller is a Controlling Radio Network Controller (CRNC) comprising the RLC layer and the MAC layer, and the base station comprises the PHY layer,
wherein the MAC layer comprises a first MAC sub-layer handling a dedicated transport channel and a second MAC sub-layer handling a common or shared transport channel, and the received data is transferred directly from the RLC layer to the second MAC sub-layer,
wherein the data is MBMS data,
wherein the second MAC sub-layer is capable to support the MBMS service, and
wherein the RLC layer operates in a non-responsive mode.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/668,632Filed 23 Sep 2003
Priority: KR 2002-5749923 Sep 2002
Published: US 2004/0116139 A117 Jun 2004
Granted: 24 Nov 2009
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

H04W 4/06
Services specially adapted for wireless communication networks; Facilities therefor: selective distribution of broadcast services, e.g. multimedia…
H04L 12/189
For broadcast or conference , e.g. multicast: in combination with wireless systems
H04W 76/40
Connection management: for selective distribution or broadcast
H04W
Wireless communication networks