Allocating radio resources to reduce the transmission power of a terminal
The invention concerns a mobile telecommunication network comprising a plurality of terminals and an allocating entity adapted to allocate radio resources. One radio resource is associated with a transmission power. One terminal of the network is selected ( 21 ) based on at least one transmission power respectively associated with at least one radio resource previously allocated to the selected terminal. Thereafter, an available radio resource is allocated ( 22 ) to the selected terminal. Then, a transmission power is associated ( 23 ) with the radio resources previously allocated to the selected terminal, so as to reduce the total transmission power allocated to the selected terminal. The previous steps are repeated ( 24 ) as long as at least one available radio resource fulfills an allocation condition.
1 . A method for allocating radio resources in a telecommunication network having a plurality of terminals, the method comprising:
/a/ selecting a terminal of the network as a function of at least one transmission power associated with at least one radio resource previously allocated to said terminal;
/b/ allocating a radio resource available to the selected terminal;
/c/ associating a transmission power with radio resources previously allocated to the selected terminal;
/d/ repeating steps /a/ to /d/ so long as at least one available radio resource satisfies an allocation condition.
2 . The method for allocating radio resources as claimed in claim 1 , where in step /a/, if at least one terminal of the network does not satisfy defined transmission criteria, said terminal is selected.
3 . The method for allocating radio resources as claimed in claim 1 , where in step /c/, for the selected terminal, a value indicating a reduction in total transmission power related to the allocation of the radio resource allocated in the previous step /b/ is determined; and according to which, if said value is less than a determined value, step /d/ is carried out on the plurality of the terminals with the exception of said selected terminal.
4 . The radio resource allocation method as claimed in claim 1 , where in step /a/ a terminal satisfying the transmission criteria defined as a function, furthermore, of a value indicating a quantity of energy available in the terminals is selected.
5 . The radio resources allocation method as claimed in claim 4 , wherein selecting a terminal as a function of the transmission powers in step /a/ comprises
for each terminal:
calculating a sum of the transmission powers over the radio resources previously allocated to said terminal;
multiplying by a determined time period and obtaining a value indicating an energy consumption;
subtracting said value indicating an energy consumption from the value indicating a quantity of energy available in the terminals; and
selecting the terminal for which, in the previous step, the lowest result is obtained.
6 . The radio resource allocation method as claimed in claim 1 , where in step /a/, selecting a terminal as a function of transmission powers comprises:
calculating, for each terminal, a sum of the transmission powers associated with the radio resources allocated to said terminal; and
selecting the terminal for which the largest value is obtained in the previous step.
7 . A radio resources allocation entity in a mobile telecommunication network having a plurality of terminals, said radio resources allocation entity being adapted for allocating radio resources to said terminals so as to reduce the total transmission power of a terminal from among the plurality of terminals, transmission power being associated with an allocated radio resource, said radio resources allocation entity comprising:
terminal selection means adapted for selecting a terminal from the network as a function of at least one transmission power associated with at least one radio resource previously allocated to said terminal;
allocation means adapted for allocating a radio resource available to the selected terminal;
association means adapted for associating a transmission power of the selected terminal with radio resources previously allocated to said terminal; and
control means adapted for controlling said selection means, said allocation means and said determination means.
8 . The radio resources allocation entity as claimed in claim 7 , wherein said selection means is adapted for, if at least one terminal does not satisfy defined transmission criteria, selecting said terminal.
9 . The radio resources allocation entity as claimed in claim 7 , further comprising interface means adapted for receiving from a terminal of the network a message comprising a value indicating a quantity of energy available in said terminal.
10 . (canceled)
11 . (canceled)
12 . (canceled)
13 . A terminal in a telecommunication network
having means for receiving an identifier of an allocated radio resource, means for dispatching a transmission power on radio resources allocated to said terminal, and means for cooperating with a radio resources allocation entity comprising:
terminal selection means adapted for selecting a terminal from the network as a function of at least one transmission power associated with at least one radio resource allocated to said terminal;
allocation means adapted for allocating a radio resource available to the selected terminal;
association means adapted for associating a transmission power of the selected terminal with radio resources previously allocated to said terminal; and
control means adapted for controlling said selection means, said allocation means and said determination means.
14 . The mobile terminal as claimed in claim 13 , further comprising interface means adapted for dispatching a message to the radio resources allocation entity, said message comprising a value indicating a quantity of energy available in said terminal.
15 . (canceled)
16 . (canceled)
17 . A computer program intended to be installed in a radio resources allocation entity, said program comprising instructions able to implement the method as claimed in claim 1 , during an execution of the program by processing means of the base station.
18 . (canceled)
19 . The radio resources allocation entity as claimed in claim 7 , wherein the radio resources allocation entity is a base station.