Resource allocation signalling
A mobile telecommunications system is described in which a base station uses enhanced allocation techniques to reduce fragmentation of resource allocations within a sub-frame due to the presence of control data within resources used for carrying user data. Different solutions are described including provision of supplemental information to supplement existing resource allocation data, use of overloading such that DCI formats may have different interpretations and the provision of new DCI formats.
1. A method performed by a base station, the method comprising:
generating control information comprising a first element, a second element and a third element for controlling communications with a mobile telephone in accordance with the generated control information;
transmitting the generated control information to the mobile telephone;
indicating, to the mobile telephone, using the first element of the control information, whether the control information is a legacy type or a new type;
indicating, to the mobile telephone, using the second element of the control information, a partition of a system bandwidth that is allocated for communications between the base station and the mobile telephone; and
indicating, to the mobile telephone, using the third element of the control information, at least one resource block within the indicated partition of the system bandwidth that is allocated for communications between the base station and the mobile telephone.
2. A base station for communicating with a mobile telephone, the base station comprising:
a controller configured to generate control information comprising a first element, a second element and a third element for controlling communications with the mobile telephone in accordance with the generated control information; and
a transceiver circuit configured to transmit the generated control information to the mobile telephone;
wherein the controller is configured to indicate, to the mobile telephone, using the first element of the control information, whether the control information is a legacy type or a new type;
wherein the controller is configured to indicate, to the mobile telephone, using the second element of the control information, a partition of a system bandwidth that is allocated for communications between the base station and the mobile telephone; and
wherein the controller is configured to indicate, to the mobile telephone, using the third element of the control information, at least one resource block within the indicated partition of the system bandwidth that is allocated for communications between the base station and the mobile telephone.
3. The base station according to claim 2 , wherein the second element comprises an index having a number of bits given by the formula ceil(log 2 (K)), where K is a total number of partitions of the system bandwidth.
4. The base station according to claim 2 , wherein the third element comprises one of: a type 0 resource allocation; a type 1 resource allocation; and a type 2 resource allocation.
5. The base station according to claim 2 , wherein the third element comprises one of: a bitmap and an index of a predefined resource block subset.
6. A mobile telephone for communicating with a base station, the mobile telephone comprising:
a controller; and
a transceiver circuit configured to receive, from the base station, control information comprising a first element, a second element and a third element for controlling communications with the base station in accordance with the generated control information;
wherein the controller is configured to determine, using the first element of the received control information, whether the control information is a legacy type or a new type;
wherein the controller is configured to determine, using the second element of the received control information, a partition of a system bandwidth that is allocated for communications between the base station and the mobile telephone; and
wherein the controller is configured to determine, using the third element of the received control information, at least one resource block within the indicated partition of the system bandwidth that is allocated for communications between the base station and the mobile telephone.
7. The mobile telephone according to claim 6 , wherein the second element comprises an index having a number of bits given by the formula ceil(log 2 (K)), where K is a total number of partitions of the system bandwidth.
8. The mobile telephone according to claim 6 , wherein the third element comprises one of: a type 0 resource allocation; a type 1 resource allocation; and a type 2 resource allocation.
9. The mobile telephone according to claim 6 , wherein the third element comprises one of: a bitmap; and an index of a predefined resource block subset.
10. A method performed by a mobile telephone, the method comprising:
receiving, from the base station, control information comprising a first element, a second element and a third element for controlling communications with the base station in accordance with the generated control information;
determining, using the first element of the received control information, whether the control information is a legacy type or a new type;
determining, using the second element of the received control information, a partition of a system bandwidth that is allocated for communications between the base station and the mobile telephone;
determining, using the third element of the received control information, at least one resource block within the indicated partition of the system bandwidth that is allocated for communications between the base station and the mobile telephone; and
controlling communications with the base station in accordance with the received control information.
11. A non-transitory computer-readable medium comprising computer implementable instructions for causing, when run on a programmable communication device, the programmable communication device to become configured as a base station according to claim 2 .
12. A non-transitory computer-readable medium comprising computer implementable instructions for causing, when run on a programmable communication device, the programmable communication device to become configured as a mobile telephone according to claim 6 .