Communication method, wireless communication system, transmitter, and receiver

In a wireless communication system where data transmission is performed between a base station and terminals by using a system frequency band configured of a plurality of resource blocks, a communication method when three transmission types, Localized transmission, Distributed transmission, and Sub-sampling transmission, are mixed in a same sub-frame,

• the method comprising:
• as a process to be performed by the base station,
• a transmission-type selecting step of selecting a transmission type to be applied to each terminal, based on traveling speed information obtained from each of the terminals configuring the wireless communication system;
• a number-of-aggregation determining step of determining the number of aggregation based on the number of terminals to which Localized transmission is applied;
• a resource-block-for-Sub-sampling-transmission selecting step of selecting, as resource blocks to be allocated for Distributed transmission, based on the determined number of aggregation, resource blocks belonging to a specific single subset among a plurality of subsets for use in Sub-sampling transmission;
• a resource-block allocating step of allocating resource blocks to each terminal based on the determined number of aggregation and the selection result at the resource-block-for-Sub-sampling-transmission selecting step;
• and
• an allocation-information generating and transmitting step of individually generating and transmitting, for each terminal, resource allocation information including the transmission types and the allocation result at the resource-block allocating step.

A wireless communication system where data transmission is performed between a base station and terminals by using a system frequency band configured of a plurality of resource blocks, the wireless communication system achieving a communication method when three transmission types, Localized transmission, Distributed transmission, and Sub-sampling transmission, are mixed in a same sub-frame, comprised of, as a process to be performed by the base station, a transmission-type selecting step of selecting a transmission type to be applied to each terminal, based on traveling speed information obtained from each of the terminals configuring the wireless communication system;

• a number-of-aggregation determining step of determining the number of aggregation based on the number of terminals to which Localized transmission is applied;
• a resource-block-for-Sub-sampling-transmission selecting step of selecting, as resource blocks to be allocated for Distributed transmission, based on the determined number of aggregation, resource blocks belonging to a specific single subset among a plurality of subsets for use in Sub-sampling transmission;
• a resource-block allocating step of allocating resource blocks to each terminal based on the determined number of aggregation and the selection result at the resource-block-for-Sub-sampling-transmission selecting step;
• and an allocation-information generating and transmitting step of individually generating and transmitting, for each terminal, resource allocation information including the transmission types and the allocation result at the resource-block allocating step.

In a wireless communication system where data transmission is performed between a base station and terminals by using a system frequency band configured of a plurality of resource blocks,

• a transmitter that operates as the base station provided in the wireless communication system achieving a communication method when three transmission types, Localized transmission, Distributed transmission, and Sub-sampling transmission, are mixed in a same sub-frame, comprised of, as a process to be performed by the base station, a transmission-type selecting step of selecting a transmission type to be applied to each terminal, based on traveling speed information obtained from each of the terminals configuring the wireless communication system;
• a number-of-aggregation determining step of determining the number of aggregation based on the number of terminals to which Localized transmission is applied;
• a resource-block-for-Sub-sampling-transmission selecting step of selecting, as resource blocks to be allocated for Distributed transmission, based on the determined number of aggregation, resource blocks belonging to a specific single subset among a plurality of subsets for use in Sub-sampling transmission;
• a resource-block allocating step of allocating resource blocks to each terminal based on the determined number of aggregation and the selection result at the resource-block-for-Sub-sampling-transmission selecting step;
• and an allocation-information generating and transmitting step of individually generating and transmitting, for each terminal, resource allocation information including the transmission types and the allocation result at the resource-block allocating step.

In a wireless communication system where data transmission is performed between a base station and terminals by using a system frequency band configured of a plurality of resource blocks,

• a receiver that operates as the terminal provided in the wireless communication system achieving a communication method when three transmission types, Localized transmission, Distributed transmission, and Sub-sampling transmission, are mixed in a same sub-frame, comprised of, as a process to be performed by the base station, a transmission-type selecting step of selecting a transmission type to be applied to each terminal, based on traveling speed information obtained from each of the terminals configuring the wireless communication system;
• a number-of-aggregation determining step of determining the number of aggregation based on the number of terminals to which Localized transmission is applied;
• a resource-block-for-Sub-sampling-transmission selecting step of selecting, as resource blocks to be allocated for Distributed transmission, based on the determined number of aggregation, resource blocks belonging to a specific single subset among a plurality of subsets for use in Sub-sampling transmission;
• a resource-block allocating step of allocating resource blocks to each terminal based on the determined number of aggregation and the selection result at the resource-block-for-Sub-sampling-transmission selecting step;
• and an allocation-information generating and transmitting step of individually generating and transmitting, for each terminal, resource allocation information including the transmission types and the allocation result at the resource-block allocating step.

In a wireless communication system where at least Distributed transmission can be applied to data transmission between a base station and terminals by using a system frequency band configured of a plurality of resource blocks,

• a communication method wherein
• when the number of distribution of data for Distributed transmission is 2 and a mutual distance between resource blocks where data is disposed in a distributed manner is N, and also when the number of all of the resource blocks in the system is NRB,
• in performing scheduling of the data for Distributed transmission, the base station
• allocates a first half portion of transmission data to a resource block with an index of m (where m is a natural number that satisfies m<NRB), allocates a latter half portion of the transmission data to a resource block with an index of m+N when m<NRB/2, and otherwise allocates the latter half portion of the transmission data to a resource block with an index of m−N.

In a wireless communication system where data transmission is performed between a base station and terminals by using a system frequency band configured of a plurality of resource blocks,

• a receiver that operates as the terminal provided in the wireless communication system achieving a communication method wherein
• when the number of distribution of data for Distributed transmission is 2 and a mutual distance between resource blocks where data is disposed in a distributed manner is N, and also when the number of all of the resource blocks in the system is NRB,
• in performing scheduling of the data for Distributed transmission, the base station
• allocates a first half portion of transmission data to a resource block with an index of m (where m is a natural number that satisfies m<NRB), allocates a latter half portion of the transmission data to a resource block with an index of m+N when m<NRB/2, and otherwise allocates the latter half portion of the transmission data to a resource block with an index of m−N.