Detecting a level of use in a communications network

1. A method, comprising:

detecting a level of use of a first radio resource in a communications network;

setting a flag in a system information if a second radio resource can be used instead of the first radio resource;

updating said system information to the network; and

requesting that access to the first radio resource by a user equipment be restricted if the flag in the updated system information is set, wherein restricting access comprises drawing a random number at the user equipment such that the user equipment must use a second radio resource if the random number is below a predetermined threshold.

2. The method according to claim 1 , wherein setting the flag requires that use of a second radio resource is below a predetermined threshold.

3. The method according to claim 1 , further comprising storing the flag.

4. The method according to claim 1 , further comprising selecting the first radio resource if the flag in the updated system information is not set and selecting a second radio resource if the flag in the updated system information is set.

5. The method according to claim 1 , wherein access is restricted to a predetermined class of user equipment if the flag is set.

6. The method according to claim 5 , wherein restricting access comprises providing an indication of the class of the user equipment.

7. The method according to claim 1 , wherein restricting access comprises transmitting a radio resource control message on a second radio resource and transmitting other data on the first radio resource.

8. The method according to claim 1 , wherein restricting access comprises allowing the user equipment to transmit data on the first radio resource if the data fits into a single message frame of a channel.

9. An apparatus comprising:

at least one processor;

memory storing a program of instructions;

wherein the memory storing the program of instructions is configured to, with the at least one processor, cause the apparatus to at least:

detect a level of use of a first radio resource used for communication in a communications network;

set a flag in system information a second radio resource is able to be used for the communication in the communications network, instead of the first radio resource; and

control a transmitter to update the system information to the network and to send a request that access to the first radio resource by a user equipment in the network be restricted if the flag in the updated system information is set, wherein restricting access comprises drawing a random number at the user equipment such that the user equipment must use a second radio resource if the random number is below a predetermined threshold.

10. The apparatus according to claim 9 , wherein the apparatus is further configured to set the flag if a level of use of the second radio resource is below a predetermined threshold.

11. The apparatus according to claim 9 , wherein the apparatus is operating in a network node configured as a control node.

12. The apparatus according to claim 9 , wherein the apparatus is operating in a network node configured as an access node.

13. The apparatus according to claim 9 , wherein a set state of the flag, indicates to a user equipment that it may only use a second radio resource.

14. The apparatus according to claim 9 , wherein a set state of the flag indicates that a restricted class of user equipment may only use a second radio resource.

15. The apparatus according to claim 14 , wherein the apparatus is further caused to control the transmitter to send an indication of said class of user equipment.

16. The apparatus according to claim 14 , wherein a set state of the flag indicates a threshold such that when a user equipment draws a random number, if the random number is above the threshold, the user equipment is allowed to use the first radio resource and if the random number is equal to or below the threshold, the user equipment must use the second radio resource.

17. The apparatus according to claim 14 , wherein a set state of the flag indicates that the user equipment should transmit a radio resource control message on a second radio resource and may transmit other data on the first radio resource.

18. The apparatus according to claim 14 , wherein a set state of the flag indicates that a user equipment may transmit data on the first radio resource if the data fits into a single message frame of a channel.

19. A user equipment comprising:

a receiver configured to receive system information including a flag, a set state of which indicates that a second radio resource can be used instead of a first radio resource; and

a processor configured to update the system information so as to determine the state of the flag,

wherein the receiver is further configured to receive a request that access to the first radio resource by the user equipment be restricted if the flag in the updated system information is set, wherein restricting access comprises drawing a random number at the user equipment such that the user equipment must use a second radio resource if the random number is below a predetermined threshold.

20. The user equipment according to claim 19 , wherein a set state of the flag further indicates that a level of use of a second radio resource is below a predetermined threshold.

21. The user equipment according to claim 19 , further comprising a switch configured to select the first radio resource if the flag is not set and configured to select the second radio resource if the flag is set.

22. The user equipment according to claim 19 , further comprising a memory configured to store the flag.

23. The user equipment according to claim 19 , wherein the switch is configured to select the first or the second radio resource upon initiation of a service.

24. A method comprising:

configuring a user equipment to use a first radio resource and a second radio resource;

receiving system information including a flag, a set state of which indicates that the second radio resource can be used instead of the first radio resource;

receiving a request that access to the first radio resource be restricted if the flag in the updated system information is set, wherein restricting access comprises drawing a random number at the user equipment such that the user equipment must use a second radio resource if the random number is below a predetermined threshold; and

updating the system information so as to determine the setting of the flag.