Method for traffic load control in a telecommunication network

• US 20030003921A1
• Filed: 05/17/2001
• Published: 01/02/2003
• Est. Priority Date: 12/18/1998
• Status: Active Grant

• Current Assignee: Nokia Networks (Nokia Corporation)
• Original Assignee: Nokia Networks (Nokia Corporation)
• Inventors: Laakso, Janne
• Granted Patent: US 6,671,512 B2
• Time in Patent Office: Days
• US Class Current: 455/453
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 28/22 Negotiating communication rate
• CPC Class Codes: H04W 52/343 taking into account loading or congestion level
• CPC Class Codes: H04W 52/346 distributing total power among users or channels
• CPC Class Codes: H04W 52/44 in connection with interruption of transmission
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

The present invention proposes a method for traffic load control in a telecommunication network consisting of at least one radio terminal (MS) and at least one radio transceiver device (BS), each radio transceiver device (BS) defining a cell of said network being controlled by a network control device (RNC); comprising the steps of: setting a first reference load value for the load of a respective cell; monitoring the load of said respective cell, and in response to the load exceeding the first reference load value, manipulating the power control to decrease the transmission power levels in the cell. The present invention thus proposes a fast load control method in that during a situation in which a certain reference load value is exceeded, the load is controlled per base station sector by affecting, e.g. transmit power commands. In addition, such load reductions can be supplemented by re-negotiating bit rates, for example. With the proposed method a necessary load margin can be reduced which advantageously increases the system capacity.

Claims

1. A method for traffic load control in a telecommunication network consisting of at least one radio terminal (MS) and at least one radio transceiver device (BS), each radio transceiver device (BS) defining a cell of said network being controlled by a network control device (RNC);

comprising the steps of;

setting a first reference load value for the load of a respective cell;

monitoring the load of said respective cell, and

in response to the load exceeding the first reference load value, manipulating the power control to decrease the transmission power levels in the cell.

2. A method according to claim 1, characterized in that

the power control is manipulated by manipulating power control messages sent between the power control entities in the network and the radio terminal.

3. A method according to claim 1, characterized by setting a second reference load value, which is greater or equal than the first reference load value.

4. A method according to claim 1, characterized in that

said monitoring is effected periodically.

5. A method according to claim 4, characterized in that

a period for monitoring is shorter during the time when said monitored load indication parameter exceeds said first reference load value than otherwise.

6. A method according to claim 1, characterized in that

said traffic has a non-real time (NRT) traffic component and a real time (RT) traffic component.

7. A method according to claim 3, characterized in that

in response to the load exceeding the second reference load value, in addition, negotiations to decrease the connection parameters such as the bit rate for at least one connection are started.

8. A method according to claim 3 or 7, characterized in that

in response to the load exceeding the second reference load value, in addition, procedures for removing at least one connection from the cell are started.

9. A method according to claim 8, characterized in that

the connection is removed from the cell by handing it over to another cell.

10. A method according to claim 8, characterized in that

the connection is removed from the cell by terminating the connection.

11. A radio transceiver device (BS) of a telecommunication network, adapted to carry out the method according to any of the preceding claims 1 to 6.

12. A telecommunication network control element (RNC), adapted to carry out the method according to any of the preceding claims 7 to 10.