Mobile terminal device and associated method for obtaining uplink resources
A method of allocating radio resources for uplink transmissions in a wireless telecommunications system, the method including: a first terminal device communicating a request for an allocation of radio resources to a base station; the base station determining there is an association between the first terminal device and a second terminal device based on their having similar predicted traffic profiles for uplink data; and the base station establishing a radio resource allocation for the second terminal device based on the resources requested by the first terminal device, and consequently transmitting radio resource allocation messages to allocate radio resources to the first and the second terminal devices for respective uplink transmissions based on the request for an allocation of radio resources received from the first terminal device.
1. A method of operating a terminal device that communicates in a wireless telecommunications system, the method comprising:
determining, in a case that uplink data is waiting for transmission to the wireless telecommunications system, to transmit a resource allocation request to the wireless telecommunications system, the resource allocation request being for a desired allocation of radio resources to the terminal device for transmission of the uplink data;
waiting, in the case that the uplink data is waiting for transmission to the wireless telecommunications system, to receive a radio resource allocation message from the wireless telecommunications system, the radio resource allocation message indicating allocated radio resources to be used for transmissions associated with the uplink data;
receiving the radio resource allocation message transmitted from the wireless telecommunications system, wherein the wireless telecommunications system having allocated, in response to the wireless telecommunications system receiving the resource allocation request from one of the terminal device and another terminal device, (i) the allocated radio resources to the terminal device by sending the radio resource allocation message to the terminal device for the transmissions associated with the uplink data and (ii) other allocated radio resources to the another terminal device by sending another radio resource allocation message to the another terminal device;
second determining that the allocated radio resources are not sufficient for the uplink data waiting for transmission to the wireless telecommunications system; and
transmitting, after receiving the radio resource allocation message, an indication and the uplink data using the allocated radio resources derived from information in the radio resource allocation message, wherein
the indication indicates a difference between the allocated resources used in the transmitting and the desired allocation of radio resources indicated in the request.
2. The method according to claim 1 , wherein the determining includes determining that the terminal device should not initiate a random access procedure of the wireless telecommunications system.
3. The method according to claim 2 , wherein the determining includes determining that the terminal device should not make transmissions on a physical random access channel of the wireless telecommunications system.
4. The method according to claim 1 , wherein the determining is based on the terminal device receiving an indication that the terminal device should not transmit the request.
5. The method according to claim 4 , wherein the indication indicates that the another terminal device in the wireless telecommunications system has requested an allocation of radio resources.
6. The method according to claim 1 , wherein the determining is based on the terminal device having received an access request denial message from the wireless telecommunications system.
7. The method according to claim 1 , wherein the transmitting the uplink data includes transmitting the uplink data to the wireless telecommunications system.
8. The method according to claim 7 , further comprising:
determining, at a later time after having transmitted the uplink data to the wireless telecommunications system, that the terminal device has further uplink data waiting for transmission to the wireless telecommunications system; and
in response to determining that the terminal device has the further uplink data, determining that the terminal device should transmit a second request for an allocation of radio resources on which to transmit the uplink data to the wireless telecommunications system, and transmitting the second request.
9. The method according to claim 8 , wherein determining that the terminal device should transmit the second request for the allocation of radio resources is based on the terminal device having received an access request allow message from the wireless telecommunications system indicating that the terminal device is allowed to make the second request for an allocation of radio resources.
10. The method according to claim 1 , wherein
the indication further indicates a request for a further allocation of radio resources in response thereto.
11. The method according to claim 1 , further comprising transmitting a second request, for the allocation of radio resources on which to transmit the uplink data to the wireless telecommunications system, after waiting to receive the radio resource allocation message for a period of time without having received the radio resource allocation message.
12. The method according to claim 1 , wherein the terminal device is a machine type communication (MTC) terminal device.
13. The method according to claim 1 , wherein
the wireless telecommunications system is associated with a radio interface spanning a system frequency bandwidth for supporting radio communications with a first type of terminal device and comprising a restricted frequency bandwidth for supporting radio communications with a second type of terminal device,
the restricted frequency bandwidth is narrower than and within the system frequency bandwidth, and
the terminal device is a terminal device of the second type.
14. The method according to claim 1 , further comprising transmitting, to the wireless telecommunication system, a rejection indication in a case that the uplink data is not waiting for transmission, the radio resource allocation message is received by the terminal device and the radio resource allocation request is transmitted to the wireless telecommunications system by the another terminal device.
15. A terminal device that communicates in a wireless telecommunications system, the terminal device comprising:
processing circuitry configured to
determine, in a case that uplink data is waiting for transmission to the wireless telecommunications system, to transmit a resource allocation request to the wireless telecommunications system, the resource allocation request being for a desired allocation of radio resources to the terminal device for transmission of the uplink data;
wait, in a case that the uplink data is waiting for transmission to the wireless telecommunications system, to receive a radio resource allocation message from the wireless telecommunications system, the radio resource allocation message indicating allocated radio resources to be used for transmissions associated with the uplink data;
receive the radio resource allocation message transmitted from the wireless telecommunications system, wherein the wireless telecommunications system having allocated, in response to the wireless communications system receiving the resource allocation request from one of the terminal device and another terminal device, (i) the allocated radio resources to the terminal device by sending the radio resource allocation message to the terminal device for the transmissions associated with the uplink data and (ii) other allocated radio resources to the another terminal device by sending another radio resource allocation message to the another terminal device;
second determine that the allocated radio resources are not sufficient for the uplink data waiting for transmission to the wireless telecommunications system; and
transmit, after receiving the radio resource allocation message, an indication and the uplink data using the allocated radio resources derived from information in the radio resource allocation message, wherein
the indication indicates a difference between the allocated resources used in the transmitting and the desired allocation of radio resources indicated in the request.
16. The terminal device according to claim 15 , wherein the processing circuitry determines that the terminal device should not initiate a random access procedure of the wireless telecommunications system.
17. The terminal device according to claim 16 , wherein the processing circuitry determines that the terminal device should not make transmissions on a physical random access channel of the wireless telecommunications system.
18. The terminal device according to claim 15 , wherein the processing circuitry determines whether to transmit the request based on the terminal device receiving an indication that the terminal device should not transmit the request.
19. The terminal device according to claim 15 , wherein the processing circuitry is further configured to transmit, to the wireless telecommunication system, a rejection indication in a case that the uplink data is not waiting for transmission, the radio resource allocation message is received by the terminal device and the radio resource allocation request is transmitted to the wireless telecommunications system by the another terminal device.