HIGH INTERFERENCE INDICATOR FOR TIME DIVISION DUPLEX WIRELESS COMMUNICATION SYSTEMS

• US 20150078220A1
• Filed: 01/29/2012
• Published: 03/19/2015
• Est. Priority Date: 01/29/2012
• Status: Active Grant

• Current Assignee: Alcatel-Lucent SA (Nokia Corporation)
• Original Assignee: Alcatel-Lucent SA (Nokia Corporation)
• Inventors: Hu, Teck, Pang, Jiyong
• Granted Patent: US 9,888,487 B2
• Time in Patent Office: Days
• US Class Current: 370/280
• CPC Class Codes: H04J 3/00 Time-division multiplex systems H04J14/00 takes precedence; relay systems H04B7/14; selecting techniques H04Q
• CPC Class Codes: H04W 24/08 Testing, supervising or monitoring using real traffic
• CPC Class Codes: H04W 72/27 between access points
• CPC Class Codes: H04W 72/542 using measured or perceived quality

Abstract

Embodiments of the claimed subject matter provide embodiments of methods for supporting dynamic sub frame re-configuration in a time division duplex wireless communication system. One embodiment includes transmitting, from a first base station to a second base station, a message indicating that the first base station is configured for scheduling uplink transmissions from first user equipment in one or more subframes of a time division duplex frame. The message is transmitted when the second base station is configured for downlink transmission to second user equipment in the subframe(s).

Claims

1. A method, comprising:

transmitting, from a first base station to a second base station, a message indicating that the first base station is configured for scheduling uplink transmissions from first user equipment in at least one subframe of a time division duplex frame, wherein the message is transmitted when the second base station is configured for downlink transmission to a second user equipment in said at least one subframe.

2. The method of claim 1, comprising determining that there is a mismatch between a first subframe allocation used by the first base station and a second subframe allocation used by the second base station so that said at least one subframe is allocated for uplink transmissions to the first base station and downlink transmissions from the second base station.

3. The method of claim 2, comprising transmitting the message in response to determining that the mismatch exists between the first and second subframe allocations.

4. The method of claim 2, wherein determining that there is a mismatch comprises determining that there is a mismatch in response to a first modification of at least one of the first subframe allocation or the second subframe allocation.

5. The method of claim 4, comprising performing a second modification of said at least one of the first subframe allocation or the second subframe allocation in response to determining that the first modification generated the mismatch.

6. The method of claim 2, comprising bypassing scheduling uplink transmissions from the first user equipment in response to determining that there is a mismatch between the first and second subframe allocations.

7. The method of claim 2, comprising receiving a second message from the second base station at the first base station, wherein the second message indicates that the second user equipment is receiving interference in said at least one subframe.

8. The method of claim 7, comprising bypassing scheduling of uplink transmissions from the first user equipment in said at least one subframe when the information received from the second user equipment indicates that the second user equipment is receiving interference in said at least one subframe.

9. A method, comprising:

receiving, from a first base station at a second base station, a first message indicating that the first base station is configured for scheduling uplink transmissions from first user equipment in at least one subframe of a time division duplex frame, wherein the first message is transmitted when the second base station is configured for downlink transmission to a second user equipment in said at least one subframe.

10. The method of claim 9, comprising bypassing scheduling downlink transmissions to the second user equipment in said at least one subframe in response to receiving the message.

11. The method of claim 9, comprising instructing, in response to receiving the first message, the second user equipment to perform at least one of a radio link monitoring measurement, a radio resource management measurement, or a channel state information measurement in said at least one subframe.

12. The method of claim 11, comprising receiving information from the second user equipment that is indicative of said at least one radio link monitoring measurement, radio resource management measurement, or channel state information measurement performed during said at least one subframe.

13. The method of claim 12, comprising transmitting a second message from the second base station to the first base station, wherein the second message indicates that the second user equipment is receiving interference in said at least one subframe.

14. The method of claim 13, comprising bypassing downlink transmissions to the second user equipment in said at least one subframe when the information received from the second user equipment indicates that the second user equipment is receiving interference in said at least one subframe.

15. A method, comprising:

receiving, at first user equipment from a first base station, a first message instructing the user equipment to perform at least one measurement during at least one subframe in a time division duplex frame, wherein the first message is received in response to the first base station determining that a second base station is configured for scheduling uplink transmissions from second user equipment in said at least one subframe and the first base station is configured for downlink transmission to the first user equipment in said at least one subframe.

16. The method of claim 15, wherein the first message instructs the first user equipment to perform at least one of a radio link monitoring measurement, a radio resource management measurement, or a channel state information measurement in said at least one subframe.

17. The method of claim 16, comprising performing said at least one of the radio link monitoring measurement, the radio resource management measurement, or the channel state information measurement in said at least one subframe.

18. The method of claim 17, comprising transmitting a second message to the first base station, wherein the second message comprises information indicative of said at least one radio link monitoring measurement, radio resource management measurement, or channel state information measurement performed during said at least one subframe.

19. The method of claim 18, wherein transmitting the second message comprises transmitting a second message comprising at least one of a reference signal received quality (RSRQ) or a reference signal received power (RSRP) determined by performing at least one measurement on a common reference signal transmitted by the second base station.