Method for an random accesses in a local network
View Patent ↗Random accesses are regulated in a radio-assisted local network having at least one access point, a reachable radio station located in the radio coverage area of the at least one access point, at least one remote radio station located outside the radio coverage area of the at least one access point and inside the radio coverage area of the reachable radio station. The at least one access point temporarily allocates radio resources, for sending information, to radio stations inside the radio coverage area. The reachable radio station sends a signal to the at least one remote radio station, containing information on the permissibility of random access by the at least one remote radio station to the radio resources of the at least one access point.
1. A method for regulating random accesses in a radio-assisted local network serving radio stations located in a radio coverage area of at least one access point in the radio-assisted local network, at least one remote radio station located outside the radio coverage area of the at least one access point and inside the radio coverage area of a reachable radio station within the radio coverage area of the at least one access point, comprising:
temporarily allocating, by the at least one access point, radio resources for sending information, to the radio stations inside the radio coverage area thereof,
the radio stations temporarily performing a random access to the radio resources for sending information;
sending a signal, from the reachable radio station to the at least one remote radio station, containing information about a feasibility to accept the random access by the at least one remote radio station of the radio resources for sending information, without allocating radio resources; and
rejecting the random access of the at least one remote radio station based on the signal.
2. A method according to claim 1 , wherein said rejecting of the random access of the at least one remote radio station lasts for a specific time interval.
3. A method according to claim 2 , wherein the signal includes an allocation of radio resources to the reachable radio station.
4. A method according to claim 2 , wherein the signal indicates availability of the radio resources for the reachable radio station, after a successful random access.
5. A method according to claim 4 , wherein the signal indicates sending of information to the reachable radio station.
6. A method according to claim 2 , wherein the signal includes a stipulation that a maximum time interval to be used for a random access has to be zero.
7. A method according to claim 6 , wherein the signal is a beacon signal.
8. A method according to claim 1 , further comprising sending, after said sending of the signal rejecting the random access of the at least one remote radio station, an additional signal from the reachable radio station to the at least one remote radio station which allows a random access of the at least one remote radio station.
9. A method according to claim 8 , wherein the additional signal indicates the end of an occupation of radio resources.
10. A method according to claim 8 , wherein the additional signal includes a stipulation of a maximum time interval for random access having a value larger than zero.
11. A method according to claim 10 , wherein the maximum time interval for random access depends on a number of remote radio stations located outside the radio coverage area of the at least one access point and inside the radio coverage area of the reachable radio station.
12. A method according to claim 11 , wherein the additional signal is a beacon signal.
13. A method according to claim 8 , wherein the additional signal includes information about a first time interval, which can be used by all the radio stations of the radio-assisted local network for a random access to the radio resources.
14. A method according to claim 13 , wherein the information is at least one of a length of the first time interval which can be used by all the radio stations of the radio-assisted local network for the random access to the radio resources and a starting point of the first time interval.
15. A method according to claim 14 , wherein outside the first time interval only the at least one access point allocates the radio resources to the radio stations inside the radio coverage area thereof.
16. A method according to claim 15 , wherein the information is in the Duration-ID-Field of a MAC frame.
17. A method according to claim 16 , wherein the additional signal can be one of a beacon signal, an allocation signal for allocation of the radio resources, and an available signal, which indicates availability of the radio resources after a successful random access has been implemented.
18. A method according to claim 8 , wherein the signal and the additional signal are sent from the reachable radio station during a second time interval, in which radio resources of the at least one access point have been allocated to the reachable radio station or in which radio resources are made available to the reachable radio station after a successful random access.