High interference indicator for time division duplex wireless communication systems

• US 9,888,487 B2
• Filed: 01/29/2012
• Issued: 02/06/2018
• 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
• Primary Examiner(s): Lai, Andrew
• Assistant Examiner(s): Lee, Andrew C
• Application Number:
  US14/375,246
• Publication Number:
  US 20150078220A1
• Time in Patent Office: 2,200 Days
• Field of Search: 370280, 370329, 370315, 370310, 370331, 370252, 370340
• 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 reconfiguration 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 device, comprising:

a memory with executable instructions stored thereon; and

a processor configured to access said memory to execute said instructions and further configured for;

transmitting, from a first base station to a second base station, a message indicating that the first base station is configured to schedule uplink transmissions from first user equipment in at least one subframe of a time division duplex frame, wherein the message is transmitted if the second base station is configured for downlink transmission to a second user equipment in said at least one subframe by transmitting a modified information element that includes;

a report on interference sensitivity; and

a Boolean value set to true to indicate a mismatch.

2. The device of claim 1, wherein the processor is further configured for 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 device of claim 2, wherein the processor is further configured for transmitting the message in response to determining that the mismatch exists between the first and second subframe allocations.

4. The device of claim 2, wherein the processor is further configured for determining that there is a mismatch by 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 device of claim 4, wherein the processor is further configured for 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 device of claim 2, wherein the processor is further configured for 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 device of claim 2, wherein the processor is further configured for 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 device of claim 7, wherein the processor is further configured for 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 device, comprising:

a memory with executable instructions stored thereon; and

a processor configured to access said memory to execute said instructions and further configured for;

receiving, from a first base station at a second base station, a first message indicating that the first base station is configured to schedule uplink transmissions from first user equipment in at least one subframe of a time division duplex frame, wherein the first message is transmitted if the second base station is configured for downlink transmission to a second user equipment in said at least one subframe, and wherein the first message comprises a modified information element that includes;

a report on interference sensitivity; and

a Boolean value set to true to indicate a mismatch.

10. The device of claim 9, wherein the processor is further configured for bypassing scheduling downlink transmissions to the second user equipment in said at least one subframe in response to receiving the message.

11. The device of claim 9, wherein the processor is further configured for 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 device of claim 11, wherein the processor is further configured for 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 device of claim 12, wherein the processor is further configured for 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 device of claim 13, wherein the processor is further configured for 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 first base station, comprising:

a transmitter configured to transmit, to a second base station, a message indicating that the first base station is configured to schedule uplink transmissions from first user equipment in at least one subframe of a time division duplex frame; and

wherein the transmitter is further configured to transmit the message if the second base station is configured for downlink transmission to a second user equipment in said at least one subframe;

wherein the transmitter is further configured to transmit the message by transmitting a modified information element that includes;

a report on interference sensitivity; and

a Boolean value set to true to indicate a mismatch.

16. A first base station, comprising:

a transmitter configured to transmit, to a second base station, a message indicating that the first base station is configured to schedule uplink transmissions from first user equipment in at least one subframe of a time division duplex frame; and

wherein the transmitter is further configured to transmit the message if the second base station is configured for downlink transmission to a second user equipment in said at least one subframe; and

wherein the message comprises a high interference indicator that uses a single bit Flag to indicate a mismatch.

17. A device, comprising:

a memory with executable instructions stored thereon; and

a processor configured to access said memory to execute said instructions and further configured for;

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

wherein the message comprises a high interference indicator that uses a single bit Flag to indicate a mismatch.

18. A device, comprising:

a memory with executable instructions stored thereon; and

a processor configured to access said memory to execute said instructions and further configured for;

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

wherein the message comprises a high interference indicator that uses a single bit Flag to indicate a mismatch.