Uplink resource allocation in a mobile communication system

A method for allocating resources to a mobile terminal for transmitting data on uplink within a mobile communication system utilizing an uplink scheme comprising transmissions on a scheduled shared channel and a contention-based channel, the method being performed by a network entity responsible for resource allocation of the mobile communication system and comprising:

• receiving a resource request from the mobile terminal via the contention-based channel,
• transmitting, in response to the resource request, a resource allocation message granting resources for transmitting data via the scheduled shared channel to the mobile terminal, and
• transmitting a trigger for repeatedly transmitting a reference signal to the network entity and information indicating a frequency bandwidth used for repeatedly transmitting the reference signal, the reference signal being a signal used for uplink channel estimation.

A mobile terminal for use in a mobile communication system utilizing an uplink scheme comprising transmissions on a scheduled shared channel and a contention-based channel, the mobile terminal comprising:

• a transmitter configured to transmit a resource request to a network entity responsible for resource allocation via the contention-based channel, and a receiver configured to receive, in response to the resource request, a resource allocation message granting resources for transmitting data via the scheduled shared channel, wherein
• the receiver is further configured to receive a trigger for repeatedly transmitting a reference signal to the network entity and information indicating a frequency bandwidth used for repeatedly transmitting the reference signal, the reference signal being a signal used for uplink channel estimation.

A network entity responsible for resource allocation for use in a mobile communication system utilizing an uplink scheme comprising transmissions on a scheduled shared channel and a contention-based channel, the network entity responsible for resource allocation comprising:

• a receiver configured to receive a resource request from a mobile terminal via the contention-based channel, and
• a transmitter configured to transmit, in response to the resource request, a resource allocation message granting resources for transmitting data via the scheduled shared channel to the mobile terminal, wherein
• the transmitter is further configured to transmit, a trigger for repeatedly transmitting a reference signal to the network entity and information indicating a frequency bandwidth used for repeatedly transmitting the reference signal, the reference signal being a signal used for uplink channel estimation.

A non-transitory computer-readable medium storing instructions that, when executed by a processor of a mobile terminal, cause the mobile terminal to request resources for transmitting data on uplink within a mobile communication system utilizing an uplink scheme comprising transmissions on a scheduled shared channel and a contention-based channel, by:

• transmitting a resource request to a network entity responsible for resource allocation via the contention-based channel,
• receiving, in response to the resource request, a resource allocation message granting resources for transmitting data via the scheduled shared channel, and
• receiving a trigger for repeatedly transmitting a reference signal to the network entity and information indicating a frequency bandwidth used for repeatedly transmitting the reference signal, the reference signal being a signal used for uplink channel estimation.

A non-transitory computer-readable medium storing instructions that, when executed by a processor of a network entity responsible for resource allocation, cause the network entity responsible for resource allocation to allocate resources to a mobile terminal for transmitting data on uplink within a mobile communication system utilizing an uplink scheme comprising transmissions on a scheduled shared channel and a contention-based channel, by:

• receiving a resource request from the mobile terminal via the contention-based channel,
• transmitting, in response to the resource request, a resource allocation message granting resources for transmitting data via the scheduled shared channel to the mobile terminal, and
• transmitting a trigger for repeatedly transmitting a reference signal to the network entity and information indicating a frequency bandwidth used for repeatedly transmitting the reference signal, the reference signal being a signal used for uplink channel estimation.