User equipment, base station, and cell reselection method
View Patent ↗A base station used broadcasts system information in a cell, the system information being used to allow a user equipment existing in the cell of the base station to perform cell reselection using a neighboring cell different from the cell as a candidate. The base station is configured to broadcast the system information including a second neighboring cell list different from a first neighboring cell list for a general user equipment as a neighboring cell list indicating the neighboring cell to be excluded from the candidate or the neighboring cell to be selected as the candidate. The second neighboring cell list is the neighboring cell list for a specific user equipment having a lower communication capability than a communication capability of the general user equipment.
1 . A communication device comprising:
a communicator configured to receive, from a base station, system information including information relevant for inter-frequency cell reselection, information indicating a duration for the inter-frequency cell reselection, and information indicating a threshold for a received power; and
a controller configured to perform the inter-frequency cell reselection based on first information and second information included in the system information, the first information indicating a priority of a carrier frequency used for the inter-frequency cell reselection, the second information indicating that a Reduced Capability user equipment is allowed to access, wherein
the controller is configured to measure the received power based on CD-SSB (cell-defining SS/PBCH Block) of a cell belonging to the carrier frequency and select, as a suitable cell, the cell belonging to the carrier frequency with the priority higher than a priority of a carrier frequency to which a serving cell belongs, the cell fulfilling a criterion of the received power based on the threshold during the duration.
2 . The communication device according to claim 1 , wherein
the communication device is a Reduced Capability user equipment.
3 . The base station comprising:
a communicator configured to transmit, to a communication device, system information relevant for inter-frequency cell reselection, information indicating a duration for the inter-frequency cell reselection, and information indicating a threshold for a received power; and
a controller configured to control for the communication device to perform the inter-frequency cell reselection based on first information and second information included in the system information, the first information indicating a priority of a carrier frequency used for the inter-frequency cell reselection, the second information indicating that a Reduced Capability user equipment is allowed to access, wherein
the controller is configured to control for the communication device to measure the received power based on CD-SSB (cell-defining SS/PBCH Block) of a cell belonging to the carrier frequency and select, as a suitable cell, the cell belonging to the carrier frequency with the priority higher than a priority of a carrier frequency to which a serving cell belongs, the cell fulfilling a criterion of the received power based on the threshold during the duration.
4 . The base station according to claim 3 , wherein
the communication device is a Reduced Capability user equipment.
5 . A communication method performed by a communication device, the communication method comprising:
receiving, from a base station, system information including information relevant for inter-frequency cell reselection, information indicating a duration for the inter-frequency cell reselection, and information indicating a threshold for a received power; and
performing the inter-frequency cell reselection based on first information and second information included in the system information, the first information indicating a priority of a carrier frequency used for the inter-frequency cell reselection, the second information indicating that a Reduced Capability user equipment is allowed to access, wherein
in the performing the inter-frequency cell reselection, measuring the received power based on CD-SSB (cell-defining SS/PBCH Block) of a cell belonging to the carrier frequency and selecting, as a suitable cell, the cell belonging to the carrier frequency with the priority higher than a priority of a carrier frequency to which a serving cell belongs, the cell fulfilling a criterion of the received power based on the threshold during the duration.
6 . The communication method according to claim 5 , wherein
the communication device is a Reduced Capability user equipment.