METHOD AND APPARATUS FOR CONFIGURING BUFFER STATUS REPORT FOR PUBLIC SAFETY TRANSMISSION OR VEHICLE-RELATED TRANSMISSION IN WIRELESS COMMUNICATION SYSTEM

• US 20170019812A1
• Filed: 03/19/2015
• Published: 01/19/2017
• Est. Priority Date: 03/19/2014
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: LEE, Youngdae, JUNG, Sunghoon
• Granted Patent: US 10,045,249 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 28/0278 using buffer status reports dynamic wireless traffic scheduling definition H04W72/12
• CPC Class Codes: H04W 4/02 Services making use of location information
• CPC Class Codes: H04W 4/40 for vehicles, e.g. vehicle-to-pedestrians [V2P]
• CPC Class Codes: H04W 4/44 for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]
• CPC Class Codes: H04W 4/46 for vehicle-to-vehicle communication [V2V]
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 4/90 Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/566 of the information or information source or recipient
• CPC Class Codes: H04W 76/14 Direct-mode setup
• CPC Class Codes: H04W 76/50 for emergency connections

Abstract

A method and apparatus for configuring a buffer status report (BSR) for a public safety transmission or a vehicle-related (V2X) transmission in a wireless communication system is provided. A user equipment (UE) configures a device-to-device (D2D) logical channel corresponding to the public safety transmission or the V2X transmission, and triggers a proximity-based services (ProSe) BSR for the D2D logical channel. The UE accommodates the triggered ProSe BSR in a media access control (MAC) protocol data unit (PDU) if the MAC PDU can accommodate only one BSR MAC control element (CE).

Claims

1. A method for configuring, by a user equipment (UE), a buffer status report (BSR) for a public safety transmission or a vehicle-related (V2X) transmission in a wireless communication system, the method comprising:

configuring, by the UE, a device-to-device (D2D) logical channel corresponding to the public safety transmission or the V2X transmission;

triggering, by the UE, a proximity-based services (ProSe) BSR for the D2D logical channel; and

accommodating, by the UE, the triggered ProSe BSR in a media access control (MAC) protocol data unit (PDU) if the MAC PDU can accommodate only one BSR MAC control element (CE).

2. The method of claim 1, wherein a highest priority is assigned to the D2D logical channel corresponding to the public safety transmission or the V2X transmission.

3. The method of claim 1, wherein the ProSe BSR reflects a buffer status of the D2D logical channel corresponding to the public safety transmission or the V2X transmission.

4. The method of claim 1, wherein the ProSe BSR is used to provide the network with information about amount of data available for D2D transmission.

5. The method of claim 1, wherein the V2X transmission includes at least one of a vehicle-to-vehicle (V2V) transmission, a vehicle-to-pedestrians (V2P) transmission, or a vehicle-to-infrastructure (V2I) transmission.

6. The method of claim 1, wherein the one BSR MAC CE is a short/truncated BSR MAC CE.

7. The method of claim 6, wherein a logical channel group (LCG) identifier (ID) in the short/truncated BSR MAC CE corresponds to a D2D-LCG ID.

8. The method of claim 1, wherein the one BSR MAC CE is either a long BSR MAC CE format 1 or a long BSR MAC CE format 2.

9. The method of claim 1, wherein at least one buffer size field in the long BSR MAC CE format 1 is replaced with D2D-LCG ID.

10. The method of claim 1, wherein a number of buffer size fields in the long BSR MAC CE format 2 is configured by a network or the UE.

12. The method of claim 1, wherein a highest priority is assigned to the D2D logical channel corresponding to the public safety transmission or the V2X transmission.

13. The method of claim 1, wherein the V2X transmission includes at least one of a vehicle-to-vehicle (V2V) transmission, a vehicle-to-pedestrians (V2P) transmission, or a vehicle-to-infrastructure (V2I) transmission.

15. The method of claim 1, wherein the determined priorities of the D2D logical channels are transmitted via a D2D scheduling assignment or a D2D control message.

11. A user equipment (UE) configured to configure a buffer status report (BSR) for a public safety transmission or a vehicle-related (V2X) transmission in a wireless communication system, the UE comprising:

a radio frequency (RF) unit configured to transmit or receive a radio signal; and

a processor coupled to the RF unit, and configured to;

configure a device-to-device (D2D) logical channel corresponding to the public safety transmission or the V2X transmission;

trigger a proximity-based services (ProSe) BSR for the D2D logical channel; and

accommodate the triggered ProSe BSR in a media access control (MAC) protocol data unit (PDU) if the MAC PDU can accommodate only one BSR MAC control element (CE).

14. A method for determining, by a user equipment (UE), priorities of device-to-device (D2D) logical channels in a wireless communication system, the method comprising:

determining, by the UE, autonomously the priorities of the D2D logical channels, if the a network does not configure the priorities of the D2D logical channels, or if a UE is an idle mode or out of network coverage; and

transmitting, by the UE, the determined priorities of the D2D logical channels to other UEs.