Method and apparatus of NR RMSI coreset configuration in MIB
Configuring control information comprises determining a frequency offset including an RB and RE level frequency offset, where the frequency offset is determined based on a lowest RE of an SS/PBCH block and a lowest RE of CORESET for RMSI, jointly configuring, using a first field of 4 bits, the RB level frequency offset with a multiplexing pattern of the SS/PBCH block and the CORESET, a BW of the CORESET, and a number of symbols for the CORESET for a combination of a SCS of the SS/PBCH block and a SCS of the CORESET, configuring using a second field of the 4 bits generating an MIB including the RB level frequency offset and the RE level frequency offset; and transmitting, to a UE, the MIB over a PBCH.
1. A method performed by a user equipment (UE), the method comprising:
receiving, from a base station, a synchronization signal and physical broadcast channel (SS/PBCH) block for master information block (MIB); and
receiving, from the base station, remaining minimum system information (RMSI) based on the MIB,
wherein the MIB includes configuration information,
wherein the configuration information includes a value indicating, based on a table, a combination of:
information on a multiplexing pattern for the SS/PBCH block and control resource set (CORESET),
a number of resource blocks for the CORESET,
a number of symbols for the CORESET, and
a resource block (RB) offset between an RB associated with the SS/PBCH block and an RB associated with the CORESET, and
wherein the table is defined with respect to a subcarrier spacing of the SS/PBCH block and a subcarrier spacing of the CORESET.
2. The method of claim 1 , wherein the multiplexing pattern for the SS/PBCH block and the CORESET comprises at least one of:
a first multiplexing pattern such that the SS/PBCH block and the CORESET occur in different time instances, a bandwidth of the SS/PBCH block overlapping with a bandwidth of the CORESET;
a second multiplexing pattern such that the SS/PBCH block and the CORESET occur in different time instances, the bandwidth of the SS/PBCH block not overlapping with the bandwidth of the CORESET; or
a third multiplexing pattern such that the SS/PBCH block and the CORESET occur in a same time instance, the bandwidth of the SS/PBCH block not overlapping with the bandwidth of the CORESET.
3. The method of claim 2 , wherein, for the first multiplexing pattern, the RB offset is configured from a number of configurations, the number of configurations being determined based on the subcarrier spacing of the SS/PBCH block, the subcarrier spacing of the CORESET, the bandwidth of the CORESET, a bandwidth of a carrier on which the SS/PBCH block is transmitted, and a minimum carrier bandwidth of the carrier on which the SS/PBCH block is transmitted, and given by:
┌(BW carrier min −BW SS *SCS SS /SCS CORESET )/(BW carrier −BW CORESET +R carrier )┐
where BW carrier min is the minimum carrier bandwidth of the carrier, BW SS is the bandwidth of the SS/PBCH block, SCS SS is the subcarrier spacing of the SS/PBCH block, SCS CORESET is the subcarrier spacing of the CORESET, BW carrier is the bandwidth of the carrier wherein the SS/PBCH block is transmitted, BW CORESET is the bandwidth of the CORESET, and R carrier is an RB level carrier raster.
4. The method of claim 3 , wherein, for the first multiplexing pattern:
for SCS SS =15 kHz, SCS CORESET =15 kHz, BW CORESET =24 RBs, the configuration of an RB level frequency offset is determined as one from 0, 2, or 4 RBs;
for SCS SS =15 kHz, SCS CORESET =15 kHz, BW CORESET =48 RBs, the configuration of the RB level frequency offset is determined as one from 12 or 16 RBs;
for SCS SS =15 kHz, SCS CORESET =15 kHz, BW CORESET =96 RBs, the configuration of the RB level frequency offset is determined as 38 RBs;
for SCS SS =15 kHz, SCS CORESET =30 kHz, BW CORESET =24 RBs, the configuration of the RB level frequency offset is determined as one from 6, 7, or 8 RBs;
for SCS SS =15 kHz, SCS CORESET =30 kHz, BW CORESET =48 RBs, the configuration of the RB level frequency offset is determined as one from 18 or 20 RBs;
for SCS SS =30 kHz, SCS CORESET =15 kHz, BW CORESET =48 RBs, the configuration of the RB level frequency offset is determined as one from 2 or 6 RBs;
for SCS SS =30 kHz, SCS CORESET =15 kHz, BW CORESET =96 RBs, the configuration of the RB level frequency offset is determined as 28 RBs;
for SCS SS =30 kHz, SCS CORESET =30 kHz, BW CORESET =24 RBs, the configuration of the RB level frequency offset is determined as one from 0, 1, 2, 3, or 4 RBs;
for SCS SS =30 kHz, SCS CORESET =30 kHz, BW CORESET =48 RBs, the configuration of the RB level frequency offset is determined as one from 12, 14, or 16 RBs;
for SCS SS =120 kHz, SCS CORESET =60 kHz, BW CORESET =48 RBs, the configuration of the RB level frequency offset is determined as one from 0 or 8 RBs;
for SCS SS =120 kHz, SCS CORESET =60 kHz, BW CORESET =96 RBs, the configuration of the RB level frequency offset is determined as 28 RBs;
for SCS SS =120 kHz, SCS CORESET =120 kHz, BW CORESET =24 RBs, the configuration of the RB level frequency offset is determined as one from 0 or 4 RBs, respectively;
for SCS SS =120 kHz, SCS CORESET =120 kHz, BW CORESET =48 RBs, the configuration of the RB level frequency offset is determined as 14 RBs;
for SCS SS =240 kHz, SCS CORESET =60 kHz, BW CORESET =96 RBs, the configuration of the RB level frequency offset is determined as one from 0 or 16 RBs; and
for SCS SS =240 kHz, SCS CORESET =120 kHz, BW CORESET =48 RBs, the configuration of the RB level frequency offset is determined as one from 0 or 8 RBs.
5. The method of claim 2 , wherein, for the second multiplexing pattern, and for a combination of the subcarrier spacing of the SS/PBCH block, the subcarrier spacing of the CORESET, and the bandwidth of the CORESET, the RB offset is configured from a number of configurations, the number of configurations being 2,
wherein a first configuration of the RB offset is determined as −BW SS *SCS SS /SCS CORESET −2 when a configured RE offset is not 0, and is determined as −BW SS *SCS SS /SCS CORESET −1 when the configured RE offset is 0, and a second configuration of the RB offset is determined as BW CORESET +1.
6. The method of claim 5 , wherein, for the second multiplexing pattern:
for SCS SS =120 kHz, SCS CORESET =60 kHz, BW CORESET =48 RBs, the first and second configurations of the RB offset are −42 and 49 RBs, respectively, when a configured RE level frequency offset is not 0, and the first and second configurations of the RB offset are −41 and 49 RBs, respectively, when the configured RE level frequency offset is 0;
for SCS SS =120 kHz, SCS CORESET =60 kHz, BW CORESET =96 RBs, the first and second configurations of the RB offset are −42 and 97 RBs, respectively, when the configured RE level frequency offset is not 0, and the first and second configurations of the RB offset are −41 and 97 RBs, respectively, when the configured RE level frequency offset is 0;
for SCS SS =240 kHz, SCS CORESET =120 kHz, BW CORESET =24 RBs, the first and second configurations of the RB offset are −42 and 25 RBs, respectively, when the configured RE level frequency offset is not 0, and the first and second configurations of the RB offset are −41 and 25 RBs, respectively, when the configured RE level frequency offset is 0; and
for SCS SS =240 kHz, SCS CORESET =120 kHz, BW CORESET =48 RBs, the first and second configurations of the RB offset are −42 and 49 RBs, respectively, when the configured RE level frequency offset is not 0, and the first and second configurations of the RB offset are −41 and 49 RBs, respectively, when the configured RE level frequency offset is 0.
7. The method of claim 2 , wherein, for the third multiplexing pattern, and for a combination of the subcarrier spacing of the SS/PBCH block, the subcarrier spacing of the CORESET, and the bandwidth of the CORESET, the RB offset is configured from a number of configurations, the number of configurations being 2, and
wherein a first configuration of the RB offset is determined as −BW SS −1 when a configured RE level frequency offset is not 0, and is determined as −BW SS when the configured RE level frequency offset is 0; and a second configuration of the RB offset is determined as BW CORESET .
8. The method of claim 7 , wherein, for the third multiplexing pattern:
for SCS SS =120 kHz, SCS CORESET =120 kHz, BW CORESET =24 RBs, the first and second configurations of the RB offset are −21 and 24 RBs when the configured RE level frequency offset is not 0, and the first and second configurations of the RB offset are −20 and 24 RBs, respectively, when the configured RE level frequency offset is 0; and
for SCS SS =120 kHz, SCS CORESET =120 kHz, BW CORESET =48 RBs, the first and second configurations of the RB offset are −21 and 48 RBs when the configured RE level frequency offset is not 0, and the first and second configurations of the RB offset are −20 and 48 RBs, respectively, when the configured RE level frequency offset is 0.
9. The method of claim 1 , wherein the MIB includes offset information indicating a resource element (RE) offset between a subcarrier associated with the SS/PBCH block and a subcarrier associated with a resource block grid.
10. A user equipment (UE) comprising:
at least one transceiver; and
at least one processor, wherein the at least one processor is configured to:
receive, from a base station, a synchronization signal and physical broadcast channel (SS/PBCH) block for master information block (MIB), and
receive, from the base station, remaining minimum system information (RMSI) based on the MIB,
wherein the MIB includes configuration information,
wherein the configuration information includes a value indicating, based on a table, a combination of:
information on a multiplexing pattern for the SS/PBCH block and control resource set (CORESET),
a number of resource blocks for the CORESET,
a number of symbols for the CORESET, and
a resource block (RB) offset between an RB associated with the SS/PBCH block and an RB associated with the CORESET, and
wherein the table is defined with respect to a subcarrier spacing of the SS/PBCH block and a subcarrier spacing of the CORESET.
11. The UE of claim 10 , wherein the multiplexing pattern for the SS/PBCH block and the CORESET comprises at least one of:
a first multiplexing pattern such that the SS/PBCH block and the CORESET occur in different time instances, a bandwidth of the SS/PBCH block overlapping with a bandwidth of the CORESET;
a second multiplexing pattern such that the SS/PBCH block and the CORESET occur in different time instances, the bandwidth of the SS/PBCH block not overlapping with the bandwidth of the CORESET; or
a third multiplexing pattern such that the SS/PBCH block and the CORESET occur in a same time instance, the bandwidth of the SS/PBCH block not overlapping with the bandwidth of the CORESET.
12. The UE of claim 11 , wherein, for the first multiplexing pattern, the RB offset is configured from a number of configurations, the number of configurations being determined based on the subcarrier spacing of the SS/PBCH block, the subcarrier spacing of the CORESET, the bandwidth of the CORESET, a bandwidth of a carrier on which the SS/PBCH block is transmitted, and a minimum carrier bandwidth of the carrier on which the SS/PBCH block is transmitted, and given by:
┌(BW carrier min −BW SS *SCS SS /SCS CORESET )/(BW carrier −BW CORESET +R carrier )┐
where BW carrier min is the minimum carrier bandwidth of the carrier, BW SS is the bandwidth of the SS/PBCH block, SCS SS is the subcarrier spacing of the SS/PBCH block, SCS CORESET is the subcarrier spacing of the CORESET, BW carrier is the bandwidth of the carrier wherein the SS/PBCH block is transmitted, BW CORESET is the bandwidth of the CORESET, and R carrier is an RB level carrier raster.
13. The UE of claim 12 , wherein, for the first multiplexing pattern:
for SCS SS =15 kHz, SCS CORESET =15 kHz, BW CORESET =24 RBs, the configuration of an RB level frequency offset is determined as one from 0, 2, or 4 RBs;
for SCS SS =15 kHz, SCS CORESET =15 kHz, BW CORESET =48 RBs, the configuration of the RB level frequency offset is determined as one from 12 or 16 RBs;
for SCS SS =15 kHz, SCS CORESET =15 kHz, BW CORESET =96 RBs, the configuration of the RB level frequency offset is determined as 38 RBs;
for SCS SS =15 kHz, SCS CORESET =30 kHz, BW CORESET =24 RBs, the configuration of the RB level frequency offset is determined as one from 6, 7, or 8 RBs;
for SCS SS =15 kHz, SCS CORESET =30 kHz, BW CORESET =48 RBs, the configuration of the RB level frequency offset is determined as one from 18 or 20 RBs;
for SCS SS =30 kHz, SCS CORESET =15 kHz, BW CORESET =48 RBs, the configuration of the RB level frequency offset is determined as one from 2 or 6 RBs;
for SCS SS =30 kHz, SCS CORESET =15 kHz, BW CORESET =96 RBs, the configuration of the RB level frequency offset is determined as 28 RBs;
for SCS SS =30 kHz, SCS CORESET =30 kHz, BW CORESET =24 RBs, the configuration of the RB level frequency offset is determined as one from 0, 1, 2, 3, or 4 RBs;
for SCS SS =30 kHz, SCS CORESET =30 kHz, BW CORESET =48 RBs, the configuration of the RB level frequency offset is determined as one from 12, 14, or 16 RBs;
for SCS SS =120 kHz, SCS CORESET =60 kHz, BW CORESET =48 RBs, the configuration of the RB level frequency offset is determined as one from 0 or 8 RBs;
for SCS SS =120 kHz, SCS CORESET =60 kHz, BW CORESET =96 RBs, the configuration of the RB level frequency offset is determined as 28 RBs;
for SCS SS =120 kHz, SCS CORESET =120 kHz, BW CORESET =24 RBs, the configuration of the RB level frequency offset is determined as one from 0 or 4 RBs, respectively;
for SCS SS =120 kHz, SCS CORESET =120 kHz, BW CORESET =48 RBs, the configuration of the RB level frequency offset is determined as 14 RBs;
for SCS SS =240 kHz, SCS CORESET =60 kHz, BW CORESET =96 RBs, the configuration of the RB level frequency offset is determined as one from 0 or 16 RBs; and
for SCS SS =240 kHz, SCS CORESET =120 kHz, BW CORESET =48 RBs, the configuration of the RB level frequency offset is determined as one from 0 or 8 RBs.
14. The UE of claim 11 , wherein, for the second multiplexing pattern, and for a combination of the subcarrier spacing of the SS/PBCH block, the subcarrier spacing of the CORESET, and the bandwidth of the CORESET, the RB offset is configured from a number of configurations, the number of configurations being 2,
wherein a first configuration of the RB offset is determined as −BW SS *SCS SS /SCS CORESET −2 when a configured RE offset is not 0, and is determined as −BW SS *SCS SS /SCS CORESET −1 when the configured RE offset is 0, and a second configuration of the RB offset is determined as BW CORESET +1.
15. The UE of claim 14 , wherein, for the second multiplexing pattern:
for SCS SS =120 kHz, SCS CORESET =60 kHz, BW CORESET =48 RBs, the first and second configurations of the RB offset are −42 and 49 RBs, respectively, when a configured RE level frequency offset is not 0, and the first and second configurations of the RB offset are −41 and 49 RBs, respectively, when the configured RE level frequency offset is 0;
for SCS SS =120 kHz, SCS CORESET =60 kHz, BW CORESET =96 RBs, the first and second configurations of the RB offset are −42 and 97 RBs, respectively, when the configured RE level frequency offset is not 0, and the first and second configurations of the RB offset are −41 and 97 RBs, respectively, when the configured RE level frequency offset is 0;
for SCS SS =240 kHz, SCS CORESET =120 kHz, BW CORESET =24 RBs, the first and second configurations of the RB offset are −42 and 25 RBs, respectively, when the configured RE level frequency offset is not 0, and the first and second configurations of the RB offset are −41 and 25 RBs, respectively, when the configured RE level frequency offset is 0; and
for SCS SS =240 kHz, SCS CORESET =120 kHz, BW CORESET =48 RBs, the first and second configurations of the RB offset are −42 and 49 RBs, respectively, when the configured RE level frequency offset is not 0, and the first and second configurations of the RB offset are −41 and 49 RBs, respectively, when the configured RE level frequency offset is 0.
16. The UE of claim 11 , wherein, for the third multiplexing pattern, and for a combination of the subcarrier spacing of the SS/PBCH block, the subcarrier spacing of the CORESET, and the bandwidth of the CORESET, the RB offset is configured from a number of configurations, the number of configurations being 2, and
wherein a first configuration of the RB offset is determined as −BW SS −1 when a configured RE level frequency offset is not 0, and is determined as −BW SS when the configured RE level frequency offset is 0; and a second configuration of the RB offset is determined as BW CORESET .
17. The UE of claim 16 , wherein, for the third multiplexing pattern:
for SCS SS =120 kHz, SCS CORESET =120 kHz, BW CORESET =24 RBs, the first and second configurations of the RB offset are −21 and 24 RBs when the configured RE level frequency offset is not 0, and the first and second configurations of the RB offset are −20 and 24 RBs, respectively, when the configured RE level frequency offset is 0; and
for SCS SS =120 kHz, SCS CORESET =120 kHz, BW CORESET =48 RBs, the first and second configurations of the RB offset are −21 and 48 RBs when the configured RE level frequency offset is not 0, and the first and second configurations of the RB offset are −20 and 48 RBs, respectively, when the configured RE level frequency offset is 0.
18. The UE of claim 10 , wherein the MIB includes offset information indicating a resource element (RE) offset between a subcarrier associated with the SS/PBCH block and a subcarrier associated with a resource block grid.