RU2020133481A

RU2020133481A - METHOD FOR RESOURCE DISTRIBUTION AND DEVICE FOR SUPPORTING VEHICLE COMMUNICATION IN THE NEXT GENERATION MOBILE COMMUNICATION SYSTEM

Info

Publication number: RU2020133481A
Application number: RU2020133481A
Authority: RU
Inventors: Сынри ДЗИН; Сангйеоб ДЗУНГ; Соенгхун КИМ
Original assignee: Самсунг Электроникс Ко., Лтд.
Priority date: 2018-04-13
Filing date: 2019-04-15
Publication date: 2022-05-13

Claims

1. A method performed by a first terminal in a communication system, the method comprising:

receiving a direct connection media access control (MAC) service data unit (SDU);

generating a sidelink MAC PDU including a sidelink MAC PDU header and a sidelink MAC SDU, with the sidelink MAC subheader placed before the sidelink MAC SDU; and

transmitting to the second terminal a packet including a Direct Connect MAC PDU,

wherein the direct connection PDU MAC header includes a destination field (DST) indicating one of a destination layer-2 identifier (ID) with which the service type for broadcast is associated, a layer-2 identifier (ID) of the destination with which the service type for multicast is associated, and a layer-2 identifier (ID) of the destination with which the service type for unicast is associated.

2. The method of claim 1, wherein the header of the Direct Connect MAC PDU further includes a version field indicating a version of the Direct Connect MAC PDU, wherein the version field has a bit size of 4 bits.

3. The method of claim 1, wherein the direct connection MAC subheader includes a logical channel ID (LCID) field that identifies the logical channel, a length field indicating the length of the direct connection MAC SDU, and a format field indicating the size of the length field.

4. The method of claim 3, wherein a value of 0 for the format field indicates 8 bits of the length field, and a value of 1 for the format field indicates 16 bits of the length field.

5. A method performed by a second terminal in a communication system, the method comprising:

receiving from the first terminal a packet including a sidelink MAC protocol data unit (PDU), and

identifying a Direct Connect MAC PDU and a Direct Connect Media Access Control (MAC) Service Data Unit (SDU) from the Direct Connect MAC PDU, wherein the Direct Connect MAC subheader is placed before the Direct Connect MAC SDU,

wherein the direct connection MAC PDU header includes a destination field (DST) indicating one of the destination layer-2 identifier (ID) with which the service type for broadcast is associated, the destination layer-2 identifier (ID), with to which the multicast service type is associated, and a layer-2 destination identifier (ID) to which the unicast service type is associated.

6. The method of claim 5, wherein the header of the Direct Connect MAC PDU further includes a version field indicating a version of the Direct Connect MAC PDU, wherein the version field has a bit size of 4 bits.

7. The method of claim 5, wherein the direct connection MAC subheader includes a logical channel ID (LCID) field that identifies a logical channel, a length field indicating the length of the direct connection MAC SDU, and a format field indicating the size of the length field, wherein format field value 0 indicates 8 length field bits, and format field value 1 indicates 16 length field bits.

8. The method of claim 5, wherein the state variable for the Packet Data Convergence Protocol (PDCP) entity is set to the sequence number of the first received PDCP data PDU of the packet.

9. The first terminal in the communication system, and the first terminal includes a transceiver and a controller associated with the transceiver and configured to:

receive a service data unit (SDU) of a media access control (MAC) of a direct connection (sidelink);

generating a Direct Connect MAC Protocol Data Unit (PDU) including a Direct Connect MAC PDU header and a Direct Connect MAC SDU, wherein the Direct Connect MAC subheader is placed before the Direct Connect MAC SDU; and

transmit to the second terminal a packet including a Direct Connect MAC PDU,

10. The first terminal of claim 9, wherein the header of the Direct Connect MAC PDU further includes a version field indicating a version of the Direct Connect MAC PDU, wherein the bit size of the version field is 4 bits.

11. The first terminal of claim 9, wherein the direct connect MAC subheader includes a logical channel ID (LCID) field that identifies a logical channel, a length field indicating the length of the direct connect MAC SDU, and a format field indicating the size of the length field.

12. The first terminal of claim 11, wherein a format field value of 0 indicates 8 length field bits and a format field value of 1 indicates 16 length field bits.

13. A second terminal in a communication system, the second terminal comprising a transceiver and a controller associated with the transceiver and configured to receive from the first terminal a packet including a sidelink MAC PDU and identify a MAC PDU header. and a direct connection MAC service data unit (SDU) of the direct connection MAC PDU, wherein the direct connection MAC subheader is placed before the direct connection MAC SDU, wherein the direct connection MAC PDU header includes a destination field ( DST) indicating one of a layer-2 identifier (ID) of the destination with which the broadcast service type is associated, a layer-2 identifier (ID) of the destination with which the multicast service type is associated, and a layer identifier (ID) -2 destination to which the unicast service type is associated.

14. The second terminal of claim 13, wherein the Direct Connect MAC PDU header further includes a version field indicating a version of the Direct Connect MAC PDU, wherein the version field has a bit size of 4 bits.

15. The second terminal of claim 13, wherein the direct connection MAC subheader includes a logical channel ID (LCID) field that identifies a logical channel, a length field indicating the length of the direct connection MAC SDU, and a format field indicating the size of the length field, when In this case, the value of the format field 0 indicates 8 bits of the length field, and the value of 1 of the format field indicates 16 bits of the length field, and the state variable for the Packet Data Convergence Protocol (PDCP) entity is set to the sequence number of the first received PDCP data PDU of the packet.