Terminal apparatus and base station apparatus
First information indicating a length of a cyclic prefix for an inter-terminal apparatus signal transmitted to the other terminal apparatus and second information indicating a length of a cyclic prefix for an uplink signal in the EUTRAN, from a base station apparatus of the EUTRAN are received from a base station apparatus of the EUTRAN.
1. A terminal apparatus configured to communicate with a network, the terminal apparatus comprising:
reception circuitry configured and/or programmed to receive, in a downlink, first to fifth information, wherein
the first information is related to a cyclic prefix configuration for a first set of resources for one of first communication and first discovery,
the second information is related to a cyclic prefix configuration for a second set of resources for the one of the first communication and the first discovery,
the third information is related to a cyclic prefix configuration for an uplink,
the fourth information indicates the first set of resources for the one of the first communication and the first discovery,
the fifth information indicates the second set of resources for the one of the first communication and the first discovery,
the first communication is a mode of communication whereby the terminal device and another terminal device can communicate with each other directly, and
the first discovery is defined as a process that is used by the terminal device to identify another terminal device in proximity by using direct signals; and
transmission circuitry configured and/or programmed to determine from the first set of resources and the second set of resources, a subset of resources to be used for the one of the first communication and the first discovery.
2. The terminal apparatus according to claim 1 , wherein
the cyclic prefix configuration for the uplink is used to generate signals in SC-FDMA symbols.
3. The terminal apparatus according to claim 1 , wherein
in a case that a first transmission of a first signal for the one of the first communication and the first discovery and an uplink transmission occur in a same timing in a carrier, one of the first transmission and the uplink transmission is dropped.
4. The terminal apparatus according to claim 1 , wherein
the transmission circuitry is configured and/or programmed to transmit, in the uplink, information related to the one of the first communication and the first discovery.
5. The terminal apparatus according to claim 1 , wherein
a first transmission of a first signal for the one of the first communication and the first discovery is performed based on an uplink transmission timing of a serving cell, and
in a case that a timer associated with a timing advance group to which the serving cell belongs is not running, the first transmission and any uplink transmission on the serving cell except for a random access preamble transmission are not performed.
6. A network apparatus configured to communicate with a terminal apparatus, the network apparatus comprising:
transmission circuitry configured and/or programmed to transmit, in a downlink, first to fifth information, wherein
the first information is related to a cyclic prefix for a first set of resources for one of first communication and first discovery,
the second information is related to a cyclic prefix configuration for a second set of resources for the one of the first communication and the first discovery,
third information is related to a cyclic prefix for an uplink,
the fourth information indicates the first set of resources for the one of the first communication and the first discovery,
the fifth information indicates the second set of resources for the one of the first communication and the first discovery,
the first communication is a mode of communication whereby the terminal device and another terminal device can communicate with each other directly,
the first discovery is defined as a process that is used by the terminal device to identify another terminal device in proximity by using direct signals, and
a subset of resources to be used for the one of the first communication and the first discovery is determined by the terminal apparatus from the first set of resources and the second set of resources.
7. The network apparatus according to claim 6 , wherein
the cyclic prefix configuration for the uplink is used for the terminal device to generate signals in SC-FDMA symbols.
8. The network apparatus according to claim 6 , wherein
in a case that a first transmission of a first signal for the one of the first communication and the first discovery and an uplink transmission occur in a same timing in a carrier, one of the first transmission and the uplink transmission is dropped.
9. The network apparatus according to claim 6 , further comprising:
the reception circuitry is configured and/or programmed to receive, in the uplink, information related to the one of the first communication and the first discovery.
10. The network apparatus according to claim 6 , wherein
a first transmission of a first signal for the one of the first communication and the first discovery is performed based on an uplink transmission timing of a serving cell, and
in a case that a timer associated with a timing advance group to which the serving cell belongs is not running, the first transmission and any uplink transmission on the serving cell except for a random access preamble transmission are not performed by the terminal apparatus.
11. A radio communication method for a terminal device configured and/or programmed to communicate with a network, the radio communication method comprising:
receiving, in a downlink, first to fifth information, wherein
the first information is related to a cyclic prefix configuration for a first set of resources for one of first communication and first discovery,
the second information is related to a cyclic prefix configuration for a second set of resources for the one of the first communication and first discovery,
the third information is related to a cyclic prefix configuration for an uplink,
the fourth information indicates the first set of resources for the one of the first communication and the first discovery,
the fifth information indicates the second set of resources for the one of the first communication and the first discovery,
the first communication is a mode of communication whereby the terminal device and another terminal device can communicate with each other directly, and
the first discovery is defined as a process that is used by the terminal device to identify another terminal device in proximity by using direct signals; and
determining from the first set of resources and the second set of resources, a subset of resources to be used for the one of the first communication and the first discovery.
12. A radio communication method for a network apparatus configured and/or programmed to communicate with a terminal device, the radio communication method comprising:
transmitting, in a downlink, first to fifth information, wherein
the first information is related to a cyclic prefix for a first set of resources for one of the first communication and the first discovery,
the second information is related to a cyclic prefix configuration for a second set of resources for the one of the first communication and the first discovery,
third information is related to a cyclic prefix for an uplink,
the fourth information indicates the first set of resources for the one of the first communication and the first discovery,
the fifth information indicates the second set of resources for the one of the first communication and the first discovery,
the first communication is a mode of communication whereby the terminal device and another terminal device can communicate with each other directly,
the first discovery is defined as a process that is used by the terminal device to identify another terminal device in proximity by using direct signals, and
a subset of resources to be used for the one of the first communication and the first discovery is determined by the terminal device from the first set of resources and the second set of resources.