Timing adjustment method in a mobile communication system that performs an adjustment of uplink transmission timing by random access between a user equipment and a base station
A timing adjustment method in a mobile communication system that performs an adjustment of uplink transmission timing by random access between a user equipment and a base station, the timing adjustment method that includes performing transmission having transmission timing adjustment information in the user equipment; allocating a plurality of parameters related to a physical uplink control channel (PUCCH) resource used for communications, between the user equipment and the base station; and if a timer controlling a term of uplink transmission timing adjustment information expires during uplink communications to the base station having the uplink transmission timing adjustment information in the user equipment, releasing only a part of the allocated plurality of parameters related to the PUCCH resource.
1. A timing adjustment method in a mobile communication system that performs an adjustment of uplink transmission timing by random access between a user equipment and a base station, the timing adjustment method comprising:
performing transmission having transmission timing adjustment information in the user equipment;
allocating a plurality of parameters related to a physical uplink control channel (PUCCH) resource used for communications, between the user equipment and the base station; and
if a timer controlling a term of uplink transmission timing adjustment information expires during uplink communications to the base station where the user equipment has the uplink transmission timing adjustment information, releasing only a plurality, which is less than all, of the allocated plurality of parameters related to the PUCCH resource.
2. A user equipment that performs an adjustment of uplink transmission timing by random access with a base station, the user equipment comprising:
a transmitter configured to perform transmission having transmission timing adjustment information; and
a controller configured to
allocate a plurality of parameters related to a physical uplink control channel (PUCCH) resource used for communications, between the user equipment and the base station; and
if a timer controlling a term of uplink transmission timing adjustment information expires during uplink communications to the base station where the user equipment has the uplink transmission timing adjustment information, release only a plurality, which is less than all, of the allocated plurality of parameters related to the PUCCH resource.
3. A base station that performs an adjustment of uplink transmission timing by random access with a user equipment, wherein
the user equipment including
a transmitter configured to perform transmission having transmission timing adjustment information; and
a controller configured to
allocate a plurality of parameters related to a physical uplink control channel (PUCCH) resource used for communications, between the user equipment and the base station; and
if a timer controlling a term of uplink transmission timing adjustment information expires during uplink communications to the base station where a user equipment has the uplink transmission timing adjustment information, release only a plurality, which is less than all, of the allocated plurality of parameters related to the PUCCH resource, and
the base station comprising
a transceiver configured to communicate with the user equipment.
4. A mobile communication system that performs an adjustment of uplink transmission timing by random access between a user equipment and a base station, the mobile communication system comprising:
the user equipment; and
the base station, wherein
the user equipment
performs transmission having transmission timing adjustment information in the user equipment,
allocates a plurality of parameters related to a physical uplink control channel (PUCCH) resource used for communications, between the user equipment and the base station, and
if a timer controlling a term of uplink transmission timing adjustment information expires during uplink communications to the base station where the user equipment has the uplink transmission timing adjustment information, releases only a plurality, which is less than all, of the allocated plurality of parameters related to the PUCCH resource.