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US 12,588,068 B2Granted
Method and apparatus for base station to perform random access procedure with reduced capability terminal using a plurality of common configurations and a single time alignment timer in mobile wireless communication system
AssigneeBlackpin Inc.
InventorSoenghun Kim
Life of this patent
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Abstract
A method and apparatus for accessing a NR cell in a mobile communication system are provided. Method for accessing a NR cell includes receiving in a first cell, by a terminal from a base station, a System Information Block1, monitoring, by the terminal, Physical Downlink Control Channel (PDCCH) for Random Access Response based at least in part on a specific ra-ResponseWindow and a specific ra-SearchSpace.
Claims4
A method by a terminal, the method comprising:
- receiving in a first cell, by a terminal from a base station, a System Information Block1 (SIB1);
- and
- monitoring, by the terminal, Physical Downlink Control Channel (PDCCH) for Random Access Response based at least in part on a specific ra-ResponseWindow and a specific ra-SearchSpace,
- wherein the SIB1 includes a ServingCellConfigCommon, the ServingCellConfigCommon includes a first RACH-ConfigCommon and optionally a second RACH-ConfigCommon and a first PDCCH-ConfigCommon and optionally a second PDCCH-ConfigCommon,
- wherein the first RACH-ConfigCommon includes a first ra-ResponseWindow and the second RACH-ConfigCommon includes a second ra-ResponseWindow,
- wherein the first PDCCH-ConfigCommon includes a first ra-SearchSpace and the second PDCCH-ConfigCommon includes a second ra-SearchSpace,
- wherein the second RACH-ConfigCommon and the second PDCCH-ConfigCommon are parameters for a second type terminals,
- wherein the specific ra-ResponseWindow is the first ra-ResponseWindow if the second RACH-ConfigCommon is not included in the ServingCellConfigCommon, and the specific ra-ResponseWindow is the second ra-ResponseWindow included in the second RACH-ConfigCommon if the second RACH-ConfigCommon is included in the ServingCellConfigCommon, and
- wherein the specific ra-SearchSpace is the first ra-SearchSpace if the second PDCCH-ConfigCommon is not included in the servingCellConfigCommon and the specific ra-SearchSpace is the second ra-SearchSpace in the second PDCCH-ConfigCommon if the second PDCCH-ConfigCommon is included in the servingCellConfigCommon.
6 more elements
A terminal in a wireless communication system, the terminal comprising:
- a transceiver configured to transmit and receive a signal;
- and
- a controller configured to control the transceiver to:
- receive in a first cell from a base station a System Information Block1 (SIB1) and
- monitor Physical Downlink Control Channel (PDCCH) for Random Access Response based at least in part on a specific ra-ResponseWindow and a specific ra-SearchSpace,
- wherein the SIB1 includes a ServingCellConfigCommon, the ServingCellConfigCommon includes a first RACH-ConfigCommon and optionally a second RACH-ConfigCommon and a first PDCCH-ConfigCommon and optionally a second PDCCH-ConfigCommon,
- wherein the first RACH-ConfigCommon includes a first ra-ResponseWindow and the second RACH-ConfigCommon includes a second ra-Response Window,
- wherein the first PDCCH-ConfigCommon includes a first ra-SearchSpace and the second PDCCH-ConfigCommon includes a second ra-SearchSpace,
- wherein the second RACH-ConfigCommon and the second PDCCH-ConfigCommon are parameters for a second type terminals,
- wherein the specific ra-ResponseWindow is the first ra-ResponseWindow if the second RACH-ConfigCommon is not included in the ServingCellConfigCommon, and the specific ra-ResponseWindow is the second ra-ResponseWindow if the second RACH-ConfigCommon is included in the ServingCellConfigCommon, and
- wherein the specific ra-SearchSpace is the first ra-SearchSpace if the second PDCCH-ConfigCommon is not included in the servingCellConfigCommon and the specific ra-SearchSpace is the second ra-SearchSpace if the second PDCCH-ConfigCommon is included in the servingCellConfigCommon.
8 more elements
A method by a base station, the method comprising:
- transmitting in a first cell, by a base station, a System Information Block1 (SIB1);
- and
- transmitting, by the base station to a second type terminal, Physical Downlink Control Channel (PDCCH) for Random Access Response based at least in part on a specific ra-ResponseWindow and a specific ra-SearchSpace,
- wherein the SIB1 includes a ServingCellConfigCommon, the ServingCellConfigCommon includes a first RACH-ConfigCommon and optionally a second RACH-ConfigCommon and a first PDCCH-ConfigCommon and optionally a second PDCCH-ConfigCommon,
- wherein the first RACH-ConfigCommon includes a first ra-ResponseWindow and the second RACH-ConfigCommon includes a second ra-Response Window,
- wherein the first PDCCH-ConfigCommon includes a first ra-SearchSpace and the second PDCCH-ConfigCommon includes a second ra-SearchSpace,
- wherein the second RACH-ConfigCommon and the second PDCCH-ConfigCommon are parameters for a second type terminals,
- wherein the specific ra-ResponseWindow is the first ra-ResponseWindow if the second RACH-ConfigCommon is not included in the ServingCellConfigCommon, and the specific ra-ResponseWindow is the second ra-ResponseWindow included in the second RACH-ConfigCommon if the second RACH-ConfigCommon is included in the ServingCellConfigCommon, and
- wherein the specific ra-SearchSpace is the first ra-SearchSpace if the second PDCCH-ConfigCommon is not included in the servingCellConfigCommon and the specific ra-SearchSpace is the second ra-SearchSpace in the second PDCCH-ConfigCommon if the second PDCCH-ConfigCommon is included in the servingCellConfigCommon.
6 more elements
Dependencies are inferred from the claim text.