Transmitting Window of Radio Link Control

A method comprising:

• receiving, by a wireless device, a configuration indicating a duration of a discard timer;
• starting the discard timer with the duration;
• starting a reassembly timer;
• receiving a first data unit comprising a first sequence number (SN);
• based on a first state variable being equal to the first SN, updating the first state variable to a second SN, wherein:
• the first state variable indicates a lower edge of a receiving window;
• and
• the receiving window is used for determining whether to discard one or more data units or place the one or more data units in a reception buffer;
• based on the discard timer being expired:
• discarding the first data unit;
• and
• updating the first state variable to a third SN;
• and
• based on the reassembly timer being expired:
• triggering a status report;
• and
• updating a second state variable associated with the status report.

A non-transitory computer-readable medium comprising instructions that, when executed by one or more processors of a wireless device, cause the wireless device to:

• receive a configuration indicating a duration of a discard timer;
• start the discard timer with the duration;
• start a reassembly timer;
• receive a first data unit comprising a first sequence number (SN);
• based on a first state variable being equal to the first SN, update the first state variable to a second SN, wherein:
• the first state variable indicates a lower edge of a receiving window;
• and
• the receiving window is used for determining whether to discard one or more data units or place the one or more data units in a reception buffer;
• based on the discard timer being expired:
• discard the first data unit;
• and
• update the first state variable to a third SN;
• and
• based on the reassembly timer being expired:
• trigger a status report;
• and
• update a second state variable associated with the status report.