IP Library › Granted Patent US 10,470,001
Granted Patent B2
US 10,470,001 · App. 15/460,784 · Granted Nov 5, 2019

Method and apparatus for scheduling data common to both MBSFN and SC-PTM in wireless communication system

Inventors: Youngdae Lee (Seoul, KR); Sangwon Kim (Seoul, KR); Jaewook Lee (Seoul, KR)
Assignee: LG ELECTRONICS INC.
H04W4/06H04W72/1289H04W72/005
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Quick Facts
Patent No.
US 10,470,001
App. No.
15/460,784
Granted
Nov 5, 2019
Kind
B2
Abstract

In an embodiment, a user equipment (UE) receives common scheduling information which schedules the data across multiple multicast-broadcast single-frequency network (MBSFN) areas, and receives the data according to the common scheduling information. In another embodiment, the UE receives common scheduling information which schedules the data on either a physical multicast channel (PMCH) or a physical downlink shared channel (PDSCH), and receives the data on a corresponding channel according to the common scheduling information. The data may correspond to a vehicle-to-everything (V2X) message.

Claims (28)

1. A method performed by a user equipment (UE) in a wireless communication system, the method comprising:

receiving, by the UE, common scheduling information in a first area, wherein the common scheduling information informs that data for a vehicle-to-everything (V2X) service is scheduled on a physical multicast channel (PMCH) for multicast-broadcast single-frequency network (MBSFN) transmission at a first subframe and a second subframe, and wherein the common scheduling information informs that the data for the V2X service is scheduled on a physical downlink shared channel (PDSCH) for single-cell point-to-multipoint (SC-PTM) transmission at a third subframe;

receiving, by the UE, the data for the V2X service in the first area at the first subframe based on the common scheduling information, wherein the first area is a MBSFN area; and

after the UE enters to a second area, wherein the second area is an area overlapped by the first area and a third area, wherein the second area is an area in which both the MBSFN transmission and the SC-PTM transmission are supported, and the third area is an area in which the SC-PTM is supported;

receiving, by the UE, the data for the V2X service at the second subframe by the MBSFN transmission based on the common scheduling information; and

receiving, by the UE, the data for the V2X service at the third subframe by the SC-PTM transmission based on the common scheduling information.

2. The method of claim 1 , wherein the common scheduling information is received via a media access control (MAC) control element (CE).

3. The method of claim 2 , further comprising decoding the MAC CE.

4. The method of claim 1 , wherein the common scheduling information is received via a physical downlink control channel (PDCCH).

5. The method of claim 4 , further comprising monitoring the PDCCH addressed by a specific radio temporary network identity (RNTI).

6. The method of claim 1 , wherein the common scheduling information is received periodically.

7. The method of claim 1 , wherein the common scheduling information includes multimedia broadcast multicast services (MBMS) system information blocks (SIBs) and a MBSFN area configuration message for multiple MBSFN areas.

8. The method of claim 1 , wherein the receiving the data for the V2X service at the first subframe and the second subframe comprises:

decoding the PMCH; and

receiving the data for the V2X service on a multicast channel (MBCH), which is a transport channel mapped to the PMCH.

9. The method of claim 1 , wherein the receiving the data for the V2X service at the third subframe comprises:

decoding the PDSCH; and

receiving the data for the V2X service on a downlink shared channel (DL-SCH), which is a transport channel mapped to the PDSCH.

10. The method of claim 1 , wherein a multicast control channel (MCCH) is not monitored whenever the UE moves across multiple MBSFN areas.

11. A user equipment (UE) in a wireless communication system, the UE comprising:

a memory;

a transceiver; and

a processor, operably coupled to the memory and the transceiver, that:

controls the transceiver to receive common scheduling information in a first area, wherein the common scheduling information informs that data for a vehicle-to-everything (V2X) service is scheduled on a physical multicast channel (PMCH) for multicast-broadcast single-frequency network (MBSFN) transmission at a first subframe and a second subframe, and wherein the common scheduling information informs that the data for the V2X service is scheduled on a physical downlink shared channel (PDSCH) for single-cell point-to-multipoint (SC-PTM) transmission at a third subframe;

controls the transceiver to receive the data in the first area at the first subframe based on the common scheduling information, wherein the first area is a MBSFN area; and

after the UE enters to a second area, wherein the second area is an area overlapped by the first area and a third area, wherein the second area is an area in which both the MBSFN transmission and the SC-PTM transmission are supported, and the third area is an area in which the SC-PTM is supported;

controls the transceiver to receive the data for the V2X service at the second subframe by the MBSFN transmission based on the common scheduling information; and

controls the transceiver to receive the data for the V2X service at the third subframe by the SC-PTM transmission based on the common scheduling information.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 17, 2017
From: LEE, YOUNGDAE; KIM, SANGWON; LEE, JAEWOOK
To: LG ELECTRONICS INC.
Reel/Frame 041618/0373 →
Continuity (3)
Provisional Application 62309926 · Mar 17, 2016
Provisional Application 62317464 · Apr 1, 2016
Related Publication 20170273057A1 · Sep 21, 2017