Method and apparatus for performing data transmissions based on congestion indicator in wireless communication system
The present disclosure relates to a method of performing operations for a User Equipment (UE) in a wireless communication system. In particular, the method includes the steps of: receiving a first data unit from an upper layer; receiving a congestion indicator from a network; and based on the first data unit being a critical data unit, transmitting the first data unit to the network, wherein, based on the first data unit not being the critical data unit, the first data unit is discarded.
1 . A method comprising:
receiving, by a user equipment (UE), information related to an importance based discard from a network, wherein the importance based discard is activated based on the information related to the importance based discard being received;
receiving, by the UE, a Packet-Data Convergence Protocol (PDCP) service data unit (SDU) from an upper layer;
determining, by the UE, whether the PDCP SDU belongs to a low importance set;
wherein based on conditions being met, a first discard timer for the importance based discard is started,
wherein based on at least one of the conditions not being met, a second discard timer is started,
submitting, by the UE, a PDCP protocol data unit (PDU) including the PDCP SDU to a lower layer,
wherein the conditions comprise:
i) the importance based discard is activated,
ii) the PDCP SDU belongs to the low importance set.
2 . The method of claim 1 , wherein activating the importance based discard comprises configuring the first discard timer for the importance based discard based on the second discard timer.
3 . The method of claim 1 , wherein the first discard timer for the importance based discard is shorter than the first second discard timer.
4 . A user equipment (UE) comprising:
at least one processor; and
at least one computer memory storing instructions that, when executed by the at least one processor, cause the UE to perform operations comprising:
receiving information related to an importance based discard from a network, wherein the importance based discard is activated based on the information related to the importance based discard being received;
receiving a Packet-Data Convergence Protocol (PDCP) service data unit (SDU) from an upper layer;
determining whether the PDCP SDU belongs to a low importance set;
wherein based on conditions being met, a first discard timer for the importance based discard is started,
wherein based on at least one of the conditions not being met, a second discard timer is started; and
submitting a PDCP protocol data unit (PDU) including the PDCP SDU to a lower layer,
wherein the conditions comprise:
i) the importance based discard is activated,
ii) the PDCP SDU belongs to the low importance set.
5 . The UE of claim 4 , wherein activating the importance based discard comprises configuring the first discard timer for the importance based discard based on the second discard timer.
6 . The UE of claim 4 , wherein the first discard timer for the importance based discard is shorter than the second discard timer.
7 . An apparatus for a user equipment (UE), the apparatus comprising:
at least one processor; and
at least one computer memory storing instructions that, when executed by the at least one processor, cause the UE to perform operations comprising:
receiving information related to an importance based discard from a network, wherein the importance based discard is activated based on the information related to the importance based discard being received;
receiving a Packet-Data Convergence Protocol (PDCP) service data unit (SDU) from an upper layer,
determining whether the PDCP SDU belongs to a low importance set;
wherein based on conditions being met, a first discard timer for the importance based discard is started,
wherein based on at least one of the conditions not being met, a second discard timer is started; and
submitting a PDCP protocol data unit (PDU) including the PDCP SDU to a lower layer,
wherein the conditions comprise:
i) the importance based discard is activated,
ii) the PDCP SDU belongs to the low importance set.
8 . A non-transitory computer readable storage medium comprising program instructions that, when executed by at least one processor, cause a user equipment (UE) to perform operations comprising:
receiving information related to an importance based discard from a network, wherein the importance based discard is activated based on the information related to the importance based discard being received;
receiving a Packet-Data Convergence Protocol (PDCP) service data unit (SDU) from an upper layer;
determining whether the PDCP SDU belongs to a low importance set;
wherein based on conditions being met, a first discard timer for the importance based discard is started,
wherein based on at least one of the conditions not being met, a second discard timer is started; and
submitting a PDCP protocol data unit (PDU) including the PDCP SDU to a lower layer,
wherein the conditions comprise:
i) the importance based discard is activated,
ii) the PDCP SDU belongs to the low importance set.