Frequency allocation in communication network

• US 20060073833A1
• Filed: 09/30/2005
• Published: 04/06/2006
• Est. Priority Date: 10/01/2004
• Status: Abandoned Application

• Current Assignee: Nokia Corporation
• Original Assignee: Nokia Corporation
• Inventors: Saily, Mikko, Tiirola, Esa, Hulkkonen, Jari, Hamalainen, Jyri
• Application Number:
  US11/239,293
• Publication Number:
  US 20060073833A1
• Time in Patent Office: Days
• US Class Current: 455/447
• CPC Class Codes: H04W 16/02 Resource partitioning among network components, e.g. reuse partitioning
• CPC Class Codes: H04W 16/32 Hierarchical cell structures
• CPC Class Codes: H04W 72/56 based on priority criteria

Abstract

A radio network element, comprising means for communicating, in a first coverage area, with a mobile terminal applying a primary frequency, means for communicating, in the first coverage area, with the mobile terminal by applying one or more secondary frequencies, if the mobile terminal can support and requests for one or more secondary uplink frequencies, wherein the radio network element is configured to allocate the primary frequency and one or more secondary frequencies from a set of frequencies, the set of frequencies being the same set of frequencies available for allocation in a second coverage area next to the first coverage area, wherein an allocation priority of the frequencies in the set of frequencies is different in the first coverage area compared to an allocation priority of frequencies in the second coverage area.

Claims

1. A method of allocating frequencies on the uplink of a radio network, the method including:

allocating a same set of uplink frequencies to each of two adjacent coverage areas of the network, wherein the set of uplink frequencies is allocated according to a different allocating priority in the two adjacent coverage areas.

2. The method according to claim 1, wherein the set of uplink frequencies includes one uplink primary frequency that is primarily allocated to a terminal residing in the sector, wherein the primary frequency is different for each of the two adjacent coverage areas.

3. The method according to claim 1, wherein the set of uplink frequencies includes at least one secondary uplink frequencies that are secondarily allocated to a terminal residing in each of the coverage areas, wherein an allocation priority of the at least one secondary frequency is different in two adjacent coverage areas.

4. A radio network, wherein the network is configured to use a same set of uplink radio frequencies in each of two adjacent coverage areas of the network, and wherein the network is configured to allocate the uplink frequencies in each of the adjacent coverage areas according to a different allocation priority.

5. The radio network according to claim 4, wherein the set of uplink frequencies includes one uplink primary frequency that is primarily allocated to a mobile terminal residing in any one of the two adjacent coverage areas, wherein the primary frequency is different for each of the two adjacent coverage areas.

6. The radio network according to claim 5, wherein the network is a macro cell network, the macro cell network including at least one of a micro cell network or a pico cell network within a coverage area of the macro cell network, wherein the allocation priority of frequencies in a coverage area of the micro cell network is such that the primary frequency of the coverage area of the macro cell network is allocated as a last uplink frequency.

7. The radio network according to claim 4, wherein the set of uplink frequencies includes at least one secondary frequencies that are secondarily allocated to a terminal residing in any one of the two adjacent coverage areas, wherein an allocation priority of the at least one secondary frequency is different in each of the two adjacent coverage areas.

8. The radio network according to claim 4, wherein the set of uplink frequencies for a certain coverage area includes a fixed primary frequency, which is a frequency that is to be allocated first in the coverage area, and at least one secondary frequency, which is allocated secondarily after the allocation of the primary frequency, the at least one secondary frequency being dynamically arranged into an allocation priority depending on interference in the network.

9. The radio network according to claim 8, wherein the network is configured to determine the interference in the network from measurement reports that are received from mobile terminals using the network.

10. The radio network according to claim 8, wherein the network is configured to determine the interference in the network from measurement reports that are formed in base stations of the network.

11. The radio network according to claim 8, wherein the network is configured to determine the interference in the network from measurement reports that are formed in mobile terminals using the network and in base stations of the network.

12. The radio network according to claim 8, wherein the network is configured to determine the interference in the network from information obtained from an allocation of frequencies in the network.

13. The radio network according to claim 4, wherein each of the two adjacent coverage areas includes a sector.

14. The radio network according to claim 4, wherein each of the two adjacent coverage areas includes a cell.

15. The radio network according to claim 4, wherein the set of uplink frequencies includes a frequency sub-band in a multi-carrier code division multiple access network.

16. The radio network according to claim 4, wherein the set of uplink frequencies includes a group of sub-carriers in an orthogonal frequency division multiplexing system.

17. A radio network element, comprising:

means for communicating, in a first coverage area, with a mobile terminal by applying a primary frequency;

means for communicating, in the first coverage area, with the mobile terminal by applying at least one secondary frequencies, if the mobile terminal can support the at least one secondary frequency and requests one of the at least one secondary uplink frequencies, wherein,

the radio network element is configured to allocate the primary frequency and at least one of the at least one secondary frequencies from a set of frequencies, the set of frequencies being the same set of frequencies available for allocation in a second coverage area that is next to the first coverage area, wherein an allocation priority of the frequencies in the set of frequencies is different in the first coverage area compared to an allocation priority of frequencies in the second coverage area.

18. The radio network element according to claim 17, wherein the network element comprises:

means for estimating one or more properties relating to the primary frequency; and

means for deciding, upon estimation, if the mobile terminal can support at least one secondary frequency.

19. The radio network element according to claim 17, wherein the network element includes a base station.

20. The radio network element according to claim 19, wherein the first and second coverage areas are provided by the same base station.

21. The radio network element according to claim 19, wherein the first and second coverage areas are provided by different base stations.

22. The radio network element according to claim 17, wherein the set of frequencies for each of the coverage areas includes a fixed primary frequency, which is a frequency that is to be allocated first in the coverage area, and at least one dynamically allocated secondary frequency being allocated secondarily after the allocation of the primary frequency, the at least one secondary frequency being dynamically arranged into an allocation priority depending on interference in a radio network.

23. The radio network element according to claim 17, wherein the coverage area includes a first sub coverage area for applying the primary frequency only, and at least one second sub-coverage area for applying at least one of the secondary frequencies, wherein the at least one second sub-coverage area is closer to the network element than the first sub-coverage area.

24. A cell base station, wherein the cell base station is either one of a micro cell base station or a pico cell base station, the cell base station comprising means for providing a radio cell, wherein the radio cell is in an operation area of a macro cell, the cell base station being configured to use a same set of frequencies as a macro cell network, wherein an allocation priority of the frequencies in the cell base station is such that a primarily allocated frequency of the macro cell has a lowest allocation priority in the radio cell.

25. A mobile terminal, comprising:

means for setting up a first uplink connection to a mobile network;

means for evaluating at least one property associated with the first uplink connection; and

means for deciding whether one or more second uplink connections are sent to the network depending upon the at least one property.

26. A computer program embodied on a computer-readable medium, said computer program including instructions for executing a computer process of allocating frequencies on the uplink of a radio network, the process including:

allocating a same set of uplink frequencies used in two adjacent coverage areas of the network, wherein the set of uplink frequencies is allocated according to a different allocating priority in the two adjacent coverage areas.