Methods and arrangements for handling unreliable scheduling grants in a telecommunication network

• US 9,295,079 B2
• Filed: 01/24/2012
• Issued: 03/22/2016
• Est. Priority Date: 02/07/2005
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Kazmi, Muhammad, Muller, Walter, Andersson, Rutger, Gerstenberger, Dirk, Bergstrm, Joakim, Parkvall, Stefan
• Primary Examiner(s): Nguyen, Phuongchau Ba
• Application Number:
  US13/356,914
• Publication Number:
  US 20120120899A1
• Time in Patent Office: 1,519 Days
• Field of Search: 370/328, 370/331, 370/338, 370/230, 370/236, 370/278, 370/280, 370/329, 370/332, 370/335, 370/341, 370/343, 370/388, 370/390, 370/394, 370/401, 370/431, 370/432, 370/462, 455/522, 714/748, 714/746, 714/749, 714/750, 714/751
• US Class Current: 1/1
• CPC Class Codes: H04B 7/264 for data rate control
• CPC Class Codes: H04W 28/04 Error control
• CPC Class Codes: H04W 52/24 using SIR [Signal to Interference Ratio] or other wireless path parameters
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

The present invention relates to methods and arrangements for handling unreliable scheduling grants in a WCDMA-communication system. A user equipment detects that a received scheduling grant is unreliable and adjust its serving grant based on that information. The user equipment is also able to report continuously received unreliable grants as an event to the network, allowing the network to adapt its operation to reduce the unreliable grants.

Claims

1. A method for handling unreliable scheduling grants in a serving network unit of a telecommunication network, the method comprising steps of:

receiving, by the serving network unit, a report of an event of continuously detected received unreliable scheduling grants during a given period of time; and

,

initiating, by the serving network unit, radio resource managing procedures for a downlink to decrease downlink interference in response to the received event report.

2. The method according to claim 1, wherein said initiating step comprises a step of increasing a power offset on a grant channel associated with the continuously detected received unreliable scheduling grants to decrease the downlink interference and enable transmission of more reliable grants.

3. The method according to claim 1, wherein said initiating step comprises a step of reducing a downlink load to decrease the downlink interference and enable transmission of more reliable grants.

4. The method according to claim 1, wherein said initiating step comprises a step of removing an unreliable radio link associated with the continuously detected received unreliable scheduling grants or replacing the unreliable radio link with a reliable radio link.

5. An arrangement for handling unreliable scheduling grants in a serving network unit of a telecommunication network, comprising:

means for receiving a report of an event of continuously detected received unreliable scheduling grants during a given period of time; and

,

means for initiating radio resource managing procedures for a downlink to decrease interference in response to the received event report.

6. The arrangement according to claim 5, wherein said serving network unit is a radio network controller.

7. The arrangement according to claim 5, wherein said initiating means increases a power offset on a grant channel associated with the continuously detected received unreliable scheduling grants to decrease the downlink interference and enable transmission of more reliable grants.

8. The arrangement according to claim 5, wherein said initiating means reduces a downlink load to decrease the downlink interference and enable transmission of more reliable grants.

9. The arrangement according to claim 5, wherein said initiating means removes an unreliable radio link associated with the continuously detected received unreliable scheduling grants or replacing the unreliable radio link with a reliable radio link.

10. A method in a radio network controller for handling unreliable scheduling grants, the method comprising steps of:

receiving, by the radio network controller, a report of an event of continuously detected received unreliable scheduling grants during a given period of time, wherein the radio network controller receives the event report via a Node B from a user equipment; and

,

initiating, by the radio network controller, radio resource managing procedures for a downlink to decrease downlink interference from the Node B to the user equipment in response to the received event report.

11. The method according to claim 10, wherein said initiating step comprises a step of increasing a power offset on a grant channel associated with the continuously detected received unreliable scheduling grants to decrease the downlink interference and enable transmission of more reliable grants to the user equipment.

12. The method according to claim 10, wherein said initiating step comprises a step of reducing a downlink load to decrease the downlink interference and enable transmission of more reliable grants to the user equipment.

13. The method according to claim 10, wherein said initiating step comprises a step of removing an unreliable radio link associated with the continuously detected received unreliable scheduling grants or replacing the unreliable radio link with a reliable radio link.

14. A radio network controller in a telecommunication network for handling unreliable scheduling grants, the radio network controller comprising:

a processor; and

a memory that stores processor-executable instructions where the processor interfaces with the memory and executes the processor-executable instructions to perform operations as follows;

receiving a report of an event of continuously detected received unreliable scheduling grants during a given period of time, wherein the radio network controller receives the event report via a Node B from a user equipment; and

,

initiating radio resource managing procedures for a downlink to decrease downlink interference from the Node B to the user equipment in response to the received event report.

15. The radio network controller according to claim 14, wherein said initiating operation comprises increasing a power offset on a grant channel associated with the continuously detected received unreliable scheduling grants to decrease the downlink interference and enable transmission of more reliable grants to the user equipment.

16. The radio network controller according to claim 14, wherein said initiating operation comprises reducing a downlink load to decrease the downlink interference and enable transmission of more reliable grants to the user equipment.

17. The radio network controller according to claim 14, wherein said initiating operation comprises removing an unreliable radio link associated with the continuously detected received unreliable scheduling grants or replacing the unreliable radio link with a reliable radio link.