Calculation of preconfigured uplink resource occasion start time and periodic timing
A method ( 1200 ) by a wireless device ( 110 ) includes transmitting ( 1202 ), to a network node ( 160 ), a request for a preconfigured uplink resource, PUR, configuration. The wireless device 110 receives the PUR configuration from the network node, and the PUR configuration comprising time and/or frequency resources for transmitting on an uplink. The wireless device determines a PUR start time based on a value associated with a hyper system frame number (HSFN), a HSFN cycle, and/or a subframe number. The PUR start time measured relative to a time associated with the PUR configuration.
1. A method performed by a wireless device, the method comprising:
transmitting, to a network node, a request for a preconfigured uplink resource, PUR, configuration, wherein the request for the PUR configuration indicates at least one of an indication of a current HSFN cycle, an indication of a current HSFN, an indication of a current SFN, or an indication of a current subframe when the request for the PUR configuration is sent;
receiving the PUR configuration from the network node, the PUR configuration comprising time and/or frequency resources for transmitting on an uplink; and
determining a PUR start time based on a value comprising an offset for a hyper system frame number, HSFN, cycle, the PUR start time measured relative to a time associated with the PUR configuration.
2. The method of claim 1 , wherein the time associated with the PUR configuration comprises a time when the PUR configuration is received from the network node.
3. The method of claim 1 , wherein the time associated with the PUR configuration comprises a time when the request for the PUR configuration is sent by the wireless device to the network node.
4. The method of claim 1 , wherein the PUR start time is determined as:
pur-startHSFNcycle=HSFNcycle_config+HSFNcycle_offset
where HSFNcycle_config is a HSFN cycle number at the time of sending the request for the PUR configuration or at the time of receiving the PUR configuration, and HSFNcycle_offset is a configured HSFN cycle offset for the requested pur-StartTime.
5. The method of claim 4 , wherein the pur-startHSFNcycle is in a range of 0 to 7.
6. The method of claim 1 , wherein the PUR starting time is an offset within one full HSFN cycle with a configurable or fixed setup.
7. The method of claim 1 , further comprising determining a first PUR occasion based on the PUR start time and transmitting on the uplink during the first PUR occasion.
8. The method of claim 7 , further comprising determining at least one additional PUR occasion subsequent to the first PUR occasion based on a PUR periodicity.
9. The method of claim 1 , further comprising determining an Nth PUR occasion as follows:
Current H-SFN cycle*number of subframes in one full H-SFN cycle+current H-SFN*number of subframes in one full SFN cycle+current system frame number*10+subframe)=(Configured PUR subframe within PUR periodicity+(N−1)*pur-Periodicity in subframes) modulo (number of subframes in maximum addressable space.
10. The method of claim 1 , further comprising determining that a Nth PUR uplink grant occurs in a transmission time interval calculated as follows:
(10485760*Number of H-SFN cycle+10240*H-SFN+10*SFN+subframe)=(pur-StartTime+(N−1)*pur-Periodicity*10240) modulo K*10485760
where H-SFN indicates the current H-SFN, SFN indicates the current SFN and subframe is the current subframe in a radio frame. K indicates the maximum H-SFN cycle which can be indexed.
11. The method of claim 1 , further comprising determining a periodic subframe where an Nth PUR occasion is started or occurs based on a number, a current H-SFN, a current SFN and the PUR configuration of PUR periodicity and the subframe within one PUR period.
12. A wireless device comprising processing circuitry configured to:
transmit, to a network node, a request for a preconfigured uplink resource (PUR) configuration, wherein the request for the PUR configuration indicates at least one of an indication of a current HSFN cycle, an indication of a current HSFN, an indication of a current SFN, or an indication of a current subframe when the request for the PUR configuration is sent;
receive the PUR configuration from the network node, the PUR configuration comprising time and/or frequency resources for transmitting on an uplink; and
determine a PUR start time based on a value comprising an offset for a hyper system frame number (HSFN) cycle, the PUR start time measured relative to a time associated with the PUR configuration.
13. A method performed by a network node, the method comprising:
receiving, from a wireless device, a request for a preconfigured uplink resource (PUR) configuration, wherein the request for the PUR configuration indicates at least one of an indication of a current HSFN cycle, an indication of a current HSFN, an indication of a current SFN, or an indication of a current subframe when the request for the PUR configuration is sent;
transmitting the PUR configuration to the wireless device, the PUR configuration comprising time and/or frequency resources for transmitting by the wireless device on an uplink; and
determining a PUR start time based on a value comprising an offset for a hyper system frame number (HSFN) cycle, the PUR start time measured relative to a time associated with the PUR configuration.
14. The method of claim 13 , wherein the time associated with the PUR configuration comprises a time when the PUR configuration is received from the network node.
15. The method of claim 13 , wherein the time associated with the request for the PUR configuration comprises a time of sending by the wireless device the request for the PUR configuration.
16. The method of claim 13 , wherein the PUR start time is determined as:
pur-startHSFNcycle=HSFNcycle_config+HSFNcycle_offset
where HSFNcycle_config is a HSFN cycle number at the time of sending the request for the PUR configuration or at the time of receiving the PUR configuration, and HSFNcycle_offset is a configured HSFN cycle offset for the requested pur-StartTime.
17. The method of claim 16 , wherein the pur-startHSFNcycle is in a range of 0 to 7.
18. The method of claim 13 , wherein the PUR starting time is an offset within one full HSFN cycle or one HSFN with a configurable or fixed setup.
19. The method of claim 13 , further comprising determining a first PUR occasion based on the PUR start time and receiving on the uplink during the first PUR occasion.
20. The method of claim 19 , further comprising determining at least one additional PUR occasion subsequent to the first PUR occasion based on a PUR periodicity.
21. The method of claim 13 , further comprising determining an Nth PUR occasion as follows:
Current H-SFN cycle*number of subframes in one full H-SFN cycle+current H-SFN*number of subframes in one full SFN cycle+current system frame number*10+subframe)=(Configured PUR subframe within PUR periodicity+(N−1)*pur-Periodicity in subframes) modulo (number of subframes in maximum addressable space.
22. The method of claim 13 , further comprising determining that a Nth PUR uplink grant occurs in a transmission time interval calculated as follows:
(10485760*Number of H-SFN cycle+10240*H-SFN+10*SFN+subframe)=(pur-StartTime+(N−1)*pur-Periodicity*10240) modulo K*10485760
where H-SFN indicates the current H-SFN, SFN indicates the current SFN and subframe is the current subframe in a radio frame. K indicates the maximum H-SFN cycle which can be indexed.
23. The method of claim 13 , further comprising determining a periodic subframe where an Nth PUR occasion is started or occurs based on a number, a current H-SFN, a current SFN and the PUR configuration of PUR periodicity and the subframe within one PUR period.
24. A network node comprising processing circuitry configured to:
receive, from a wireless device, a request for a preconfigured uplink resource (PUR) configuration, wherein the request for the PUR configuration indicates at least one of an indication of a current HSFN cycle, an indication of a current HSFN, an indication of a current SFN, or an indication of a current subframe when the request for the PUR configuration is sent;
transmit the PUR configuration to the wireless device, the PUR configuration comprising time and/or frequency resources for transmitting by the wireless device on an uplink; and
determine a PUR start time based on a value comprising an offset for a hyper system frame number (HSFN) cycle, the PUR start time measured relative to a time associated with the PUR configuration.