Mobile terminal device and associated method for obtaining uplink resources
View Patent ↗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 for receiving an allocation of radio resources for transmission of uplink data to a base station in a wireless telecommunications system, the method comprising:
determining, by circuitry of the terminal device, that the terminal device has uplink data waiting for transmission to the base station;
receiving, by the circuitry, an access denial message transmitted from the base station when the base station receives an access request message from a second terminal device that begins a random access procedure of the wireless telecommunications system;
determining, upon reception of the access denial message, that the terminal device should not transmit a request to the base station for an allocation of radio resources for transmission of the uplink data;
waiting, by the circuitry, to receive a radio resource allocation message from the base station to allocate radio resources to be used for transmissions associated with the uplink data determined to be waiting for transmission to the base station; and
receiving the radio resource allocation message comprising radio resources from the base station after the second terminal device completes the random access procedure and the second terminal device is granted radio resources for transmission to the base station, wherein
the base station pre-emptively allocates the radio resources to the terminal device based upon the terminal device being classified as having a common traffic profile characteristic with the second terminal device.
2. The method according to claim 1 , wherein the determining that the terminal device should not transmit the request to the base station comprises determining, by the circuitry, 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 that the terminal device should not initiate the random access procedure of the wireless telecommunications system comprises determining, by the circuitry, 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 that the terminal device should not transmit the request to the base station is based on the access denial message.
5. The method according to claim 4 , wherein the access denial message indicates that the second terminal device has transmitted the access request message, which is a request for an allocation of the radio resources.
6. The method according to claim 1 , further comprising transmitting the uplink data waiting for transmission to the base station using the radio resources derived from information in the radio resource allocation message received from the base station.
7. The method according to claim 6 , further comprising:
determining, at a later time after having transmitted the uplink data to the base station, that the terminal device has further uplink data waiting for transmission to the base station; and
in response to determining that the terminal device has the further uplink data, determining that the terminal device should transmit a request for an allocation of the radio resources on which to transmit the uplink data to the base station, and transmitting the request for the allocation of radio resources.
8. The method according to claim 7 , wherein the determining that the terminal device should transmit the request for an allocation of the radio resources is based on the terminal device having received an access request allow message from the base station, the access request allow message indicating that the terminal device is allowed to make the request for the allocation of the radio resources.
9. The method according to claim 1 , further comprising:
determining that the allocation of the radio resources is not sufficient for the uplink data waiting for transmission to the base station; and
transmitting, to the base station, an indication of a request for a further allocation of radio resources in response to determining the allocation of radio resources is not sufficient.
10. The method according to claim 9 , wherein the indication of the request for the further allocation of radio resources is transmitted to the base station using the allocated radio resources.
11. The method according to claim 1 , further comprising transmitting a request for an allocation of the radio resources on which to transmit the uplink data to the base station after waiting to receive the radio resource allocation message from the base station for a period of time without the radio resource allocation message being received from the base station.
12. The method according to claim 1 , wherein the terminal device is a machine type communication (MTC) 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. A terminal device arranged to receive an allocation of radio resources for transmission of uplink data to a base station in a wireless telecommunications system, the terminal device comprising:
circuitry configured to:
determine that the terminal device has uplink data waiting for transmission to the base station;
receive an access denial message transmitted from the base station when the base station receives an access request message from a second terminal device that begins a random access procedure of the wireless telecommunications system;
determine, upon reception of the access denial message, that the terminal device should not transmit a request for an allocation of radio resources to the base station for transmission of the uplink data to the base station;
wait to receive a radio resource allocation message from the base station to allocate radio resources to be used for transmissions associated with the uplink data determined to be waiting for transmission to the base station; and
receive the radio resource allocation message comprising radio resources from the base station after the second terminal device completes the random access procedure and the second terminal device is granted radio resources for transmission to the base station, wherein
the base station pre-emptively allocates the radio resources to the terminal device based upon the terminal device being classified as having a common traffic profile characteristic with the second terminal device.
15. The terminal device according to claim 14 , wherein the circuitry is configured to determine that the terminal device should not transmit the request to the base station and that the terminal device should not initiate a random access procedure of the wireless telecommunications system.
16. The terminal device according to claim 15 , wherein the circuitry is configured to determine that the terminal device should not initiate the random access procedure of the wireless telecommunications system and that the terminal device should not make transmissions on a physical random access channel of the wireless telecommunications system.
17. The terminal device according to claim 14 , wherein the circuitry is configured to determine that the terminal device should not transmit the request to the base station based on the access denial request.
18. The terminal device according to claim 17 , wherein the access denial message comprises an indication that the second terminal device has transmitted the access request message, which is a request for an allocation of the radio resources.
19. The terminal device according to claim 14 , wherein the circuitry is configured to determine that the terminal device should not transmit the request for the allocation of the radio resources based on the terminal device having received the access request denial message from the base station.
20. The terminal device according to claim 14 , wherein the circuitry is further configured to transmit the uplink data waiting for transmission to the base station using the radio resources derived from information in the radio resource allocation message received from the base station.
21. The terminal device according to claim 20 , wherein the circuitry is further configured to
determine at a later time after having transmitted the uplink data to the base station that the terminal device has further uplink data waiting for transmission to the base station, and
in response to determining that the terminal device has further uplink data waiting for transmission, determine that the terminal device should transmit a request for an allocation of the radio resources on which to transmit the uplink data to the base station, and transmit the request for the allocation of radio resources.
22. The terminal device according to claim 21 , wherein the circuitry is configured to determine that the terminal device should transmit the request for the allocation of the radio resources in response to determining that the terminal device has further uplink data waiting for transmission to the base station based on the terminal device having received an access request allow message from the base station to indicate the terminal device is allowed to make the request for the allocation of the radio resources.
23. The terminal device according to claim 14 , wherein the circuitry is further configured to determine that the allocation of radio resources is not sufficient for the uplink data waiting for transmission to the base station and to transmit to the base station an indication of a request for a further allocation of radio resources in response to determining the allocation of resources is not sufficient.
24. The terminal device according to claim 23 , wherein the circuitry is configured to transmit the indication, of a request for a further allocation of radio resources, to the base station using the allocated radio resources.
25. The terminal device according to claim 14 , wherein the circuitry is further configured to transmit a request for an allocation of radio resources on which to transmit the uplink data to the base station after waiting to receive a radio resource allocation message from the base station for a period of time without the radio resource allocation message being received from the base station.