Abstract
Techniques for combating high interference in a dominant interference scenario are described. A terminal may observe high interference from an interfering base station in a dominant interference scenario. In an aspect, high interference may be combated by reserving time intervals for a serving base station. The terminal may communicate with the serving base station in the reserved time intervals and may avoid high interference that may desensitize a receiver at the terminal. In one design, the terminal may measure received power of base stations and may report its interference condition. The serving base station may receive a report from the terminal, determine that the terminal is observing high interference, and send a reservation request to the interfering base station to reserve time intervals. The interfering base station may grant the request and return a response. The serving base station may thereafter communicate with the terminal in the reserved time intervals.
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Technologies
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Use Cases
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Claim
1. A method for wireless communication, comprising:
reporting interference condition observed by a terminal; and
communicating at least data transmission between the terminal and a serving base station in time intervals reserved for the serving base station based on the reported interference condition, the reserved time intervals having reduced interference from an interfering base station.', 'reporting interference condition observed by a terminal; and', 'communicating at least data transmission between the terminal and a serving base station in time intervals reserved for the serving base station based on the reported interference condition, the reserved time intervals having reduced interference from an interfering base station.
2. The method of claim 1, wherein the reserved time intervals correspond to frames in at least one interlace reserved for the serving base station.
3. The method of claim 1, wherein the reporting interference condition comprises
measuring received power of the interfering base station, and
sending the measured received power of the interfering base station to the serving base station.', 'measuring received power of the interfering base station, and', 'sending the measured received power of the interfering base station to the serving base station.
4. The method of claim 3, wherein the reporting interference condition further comprises sending an identifier (ID) of the interfering base station to the serving base station.
5. The method of claim 3, wherein the measuring the received power of the interfering base station comprises
receiving a pilot from the interfering base station, and
measuring received power of the pilot from the interfering base station.', 'receiving a pilot from the interfering base station, and', 'measuring received power of the pilot from the interfering base station.
6. The method of claim 1, further comprising:
detecting for the serving base station based on a low reuse preamble (LRP) signal sent by the serving base station in time periods non-overlapping or pseudo-random with respect to time periods used for an LRP signal sent by the interfering base station.', 'detecting for the serving base station based on a low reuse preamble (LRP) signal sent by the serving base station in time periods non-overlapping or pseudo-random with respect to time periods used for an LRP signal sent by the interfering base station.
7. The method of claim 1, further comprising:
exchanging messages with the serving base station or the interfering base station or both base stations to reserve time intervals for the serving base station.', 'exchanging messages with the serving base station or the interfering base station or both base stations to reserve time intervals for the serving base station.
8. The method of claim 1, further comprising:
sending a message to the interfering base station to request the interfering base station to clear time intervals; and
exchanging messages with the serving base station in the cleared time intervals to open a connection with the serving base station.', 'sending a message to the interfering base station to request the interfering base station to clear time intervals; and', 'exchanging messages with the serving base station in the cleared time intervals to open a connection with the serving base station.
9. The method of claim 8, wherein the message comprises a Layer 2 (L2) message or a Layer 3 (L3) message
10. The method of claim 1, wherein the reserved time intervals comprise first time intervals reserved for forward link and second time intervals reserved for reverse link, and wherein the communicating with the serving base station comprises
receiving forward link data and control information from the serving base station in the first time intervals, and
sending reverse link data and control information to the serving base station in the second time intervals.', 'receiving forward link data and control information from the serving base station in the first time intervals, and', 'sending reverse link data and control information to the serving base station in the second time intervals
11. The method of claim 1, wherein the communicating with the serving base station comprises communicating with the serving base station on all or a subset of frequency resources in the reserved time intervals, wherein remaining frequency resources in the reserved time intervals are unused by the interfering base station if the terminal is observing high interference from the interfering base station and are usable by the interfering base station if the terminal is not observing high interference from the interfering base station
12. The method of claim 1, further comprising:
receiving broadcast transmissions from the serving base station in time intervals having reduced interference from the interfering base station.', 'receiving broadcast transmissions from the serving base station in time intervals having reduced interference from the interfering base station
13. The method of claim 1, wherein the interfering base station has higher transmit power and higher pathloss than transmit power and pathloss of the serving base station
14. The method of claim 1, wherein the interfering base station has restricted association and the terminal is not allowed to connect to the interfering base station
15. The method of claim 1, wherein the interference condition is reported directly by the terminal
16. An apparatus for wireless communication, comprising:
at least one processor configured to report interference condition observed by a terminal, and to communicate at least data transmission between the terminal and a serving base station in time intervals reserved for the serving base station based on the reported interference condition, the reserved time intervals having reduced interference from an interfering base station.', 'at least one processor configured to report interference condition observed by a terminal, and to communicate at least data transmission between the terminal and a serving base station in time intervals reserved for the serving base station based on the reported interference condition, the reserved time intervals having reduced interference from an interfering base station
17. The apparatus of claim 16, wherein the at least one processor is configured to measure received power of the interfering base station and to send the measured received power of the interfering base station to the serving base station
18. The apparatus of claim 16, wherein the at least one processor is configured to send a message to the interfering base station to request the interfering base station to clear time intervals, and to exchange messages with the serving base station in the cleared time intervals to open a connection with the serving base station
19. An apparatus for wireless communication, comprising:
means for reporting interference condition observed by a terminal; and
means for communicating at least data transmission between the terminal and a serving base station in time intervals reserved for the serving base station based on the reported interference condition, the reserved time intervals having reduced interference from an interfering base station.', 'means for reporting interference condition observed by a terminal; and', 'means for communicating at least data transmission between the terminal and a serving base station in time intervals reserved for the serving base station based on the reported interference condition, the reserved time intervals having reduced interference from an interfering base station.
20. The apparatus of claim 19, wherein the means for reporting interference condition comprises
means for measuring received power of the interfering base station, and
means for sending the measured received power of the interfering base station to the serving base station.', 'means for measuring received power of the interfering base station, and', 'means for sending the measured received power of the interfering base station to the serving base station.
21. The apparatus of claim 19, further comprising:
means for sending a message to the interfering base station to request the interfering base station to clear time intervals; and
means for exchanging messages with the serving base station in the cleared time intervals to open a connection with the serving base station.', 'means for sending a message to the interfering base station to request the interfering base station to clear time intervals; and', 'means for exchanging messages with the serving base station in the cleared time intervals to open a connection with the serving base station.
22. A computer program product, comprising:
a computer-readable medium comprising:
code for causing at least one computer to report interference condition observed by a terminal, and
code for causing the at least one computer to communicate at least data transmission between the terminal and a serving base station in time intervals reserved for the serving base station based on the reported interference condition, the reserved time intervals having reduced interference from an interfering base station.', 'a computer-readable medium comprising:
code for causing at least one computer to report interference condition observed by a terminal, and
code for causing the at least one computer to communicate at least data transmission between the terminal and a serving base station in time intervals reserved for the serving base station based on the reported interference condition, the reserved time intervals having reduced interference from an interfering base station.', 'code for causing at least one computer to report interference condition observed by a terminal, and', 'code for causing the at least one computer to communicate at least data transmission between the terminal and a serving base station in time intervals reserved for the serving base station based on the reported interference condition, the reserved time intervals having reduced interference from an interfering base station.
23. A method for wireless communication, comprising:
determining time intervals reserved for a serving base station based on interference condition observed by a terminal, the reserved time intervals having reduced interference from an interfering base station; and
communicating at least data transmission between the serving base station and the terminal in the reserved time intervals.', 'determining time intervals reserved for a serving base station based on interference condition observed by a terminal, the reserved time intervals having reduced interference from an interfering base station; and', 'communicating at least data transmission between the serving base station and the terminal in the reserved time intervals.
24. The method of claim 23, further comprising:
receiving a report of the interference condition observed by the terminal; and
reserving time intervals for the serving base station based on the report.', 'receiving a report of the interference condition observed by the terminal; and', 'reserving time intervals for the serving base station based on the report.
25. The method of claim 23, further comprising:
sending a request for reserved time intervals to the interfering base station; and
receiving a response from the interfering base station.', 'sending a request for reserved time intervals to the interfering base station; and', 'receiving a response from the interfering base station.
26. The method of claim 23, further comprising:
receiving a report of the interference condition observed by the terminal;
reserving time intervals for the serving base station if the report indicates the terminal observing high interference from the interfering base station; and
reserving time and frequency resources for communication with the terminal if the report indicates the terminal not observing high interference from the interfering base station.', 'receiving a report of the interference condition observed by the terminal;', 'reserving time intervals for the serving base station if the report indicates the terminal observing high interference from the interfering base station; and', 'reserving time and frequency resources for communication with the terminal if the report indicates the terminal not observing high interference from the interfering base station.
27. The method of claim 23, further comprising:
determining time intervals cleared by the interfering base station; and
exchanging messages with the terminal in the cleared time intervals to open a connection for the terminal.', 'determining time intervals cleared by the interfering base station; and', 'exchanging messages with the terminal in the cleared time intervals to open a connection for the terminal.
28. The method of claim 23, further comprising:
sending broadcast transmissions in time intervals having reduced interference from the interfering base station.', 'sending broadcast transmissions in time intervals having reduced interference from the interfering base station.
29. The method of claim 28, further comprising:
sending a message to the interfering base station to request the interfering base station to reduce interference in the time intervals for the broadcast transmissions.', 'sending a message to the interfering base station to request the interfering base station to reduce interference in the time intervals for the broadcast transmissions.
30. An apparatus for wireless communication, comprising:
at least one processor configured to determine time intervals reserved for a serving base station based on interference condition observed by a terminal, the reserved time intervals having reduced interference from an interfering base station, and to communicate at least data transmission between the serving base station and the terminal in the reserved time intervals.', 'at least one processor configured to determine time intervals reserved for a serving base station based on interference condition observed by a terminal, the reserved time intervals having reduced interference from an interfering base station, and to communicate at least data transmission between the serving base station and the terminal in the reserved time intervals.
31. The apparatus of claim 30, wherein the at least one processor is configured to receive a report of the interference condition observed by the terminal, and to reserve time intervals for the serving base station based on the report.
32. The apparatus of claim 30, wherein the at least one processor is configured to send a request for reserved time intervals to the interfering base station, and to receive a response from the interfering base station.
33. The apparatus of claim 30, wherein the at least one processor is configured to determine time intervals cleared by the interfering base station, and to exchange messages with the terminal in the cleared time intervals to open a connection for the terminal.
34. A method for wireless communication, comprising:
reserving time intervals for a serving base station based on interference condition observed by a terminal wherein data transmission is performed between the serving base station and the terminal in the reserved time intervals; and
reducing interference in the reserved time intervals by an interfering base station.', 'reserving time intervals for a serving base station based on interference condition observed by a terminal wherein data transmission is performed between the serving base station and the terminal in the reserved time intervals; and', 'reducing interference in the reserved time intervals by an interfering base station.
35. The method of claim 34, wherein the reserving time intervals for the serving base station comprises
receiving a request for reserved time intervals from the serving base station, the request being sent based on the interference condition observed by the terminal,
reserving time intervals for the serving base station in response to the request, and sending a response to the serving base station.', 'receiving a request for reserved time intervals from the serving base station, the request being sent based on the interference condition observed by the terminal,', 'reserving time intervals for the serving base station in response to the request, and sending a response to the serving base station.
36. The method of claim 34, wherein the reducing interference in the reserved time intervals comprises avoiding transmission in the reserved time intervals by the interfering base station.
37. The method of claim 34, wherein the reducing interference in the reserved time intervals comprises reducing transmit power of transmission sent in the reserved time intervals by the interfering base station.
38. The method of claim 34, wherein the reducing interference in the reserved time intervals comprises performing beamsteering for transmission sent in the reserved time intervals to steer the transmission in a direction different from the terminal.
39. The method of claim 34, further comprising:
receiving a message from the terminal to request the interfering base station to clear time intervals for use by the terminal for initial communication, and
reducing interference in the cleared time intervals by the interfering base station.', 'receiving a message from the terminal to request the interfering base station to clear time intervals for use by the terminal for initial communication, and', 'reducing interference in the cleared time intervals by the interfering base station.
40. The method of claim 34, further comprising:
receiving a message from the serving base station or the terminal to request the interfering base station to clear time intervals in which the serving base station sends broadcast transmissions; and
reducing interference in the cleared time intervals by the interfering base station.', 'receiving a message from the serving base station or the terminal to request the interfering base station to clear time intervals in which the serving base station sends broadcast transmissions; and', 'reducing interference in the cleared time intervals by the interfering base station.
41. An apparatus for wireless communication, comprising:
at least one processor configured to reserve time intervals for a serving base station based on interference condition observed by a terminal wherein data transmission is performed between the serving base station and the terminal in the reserved time intervals, and to reduce interference in the reserved time intervals by an interfering base station.', 'at least one processor configured to reserve time intervals for a serving base station based on interference condition observed by a terminal wherein data transmission is performed between the serving base station and the terminal in the reserved time intervals, and to reduce interference in the reserved time intervals by an interfering base station.
42. The apparatus of claim 41, wherein the at least one processor is configured to receive a request for reserved time intervals from the serving base station, the request being sent based on the interference condition observed by the terminal, to reserve time intervals for the serving base station in response to the request, and to send a response to the serving base station.
43. The apparatus of claim 41, wherein the at least one processor is configured to avoid transmission in the reserved time intervals by the interfering base station.
44. The apparatus of claim 41, wherein the at least one processor is configured to receive a message from the terminal to request the interfering base station to clear time intervals for use by the terminal for initial communication, and to reduce interference in the cleared time intervals by the interfering base station.
45. An apparatus for wireless communication, comprising:
means for determining time intervals reserved for a serving base station based on interference condition observed by a terminal, the reserved time intervals having reduced interference from an interfering base station; and
means for communicating transmission data between the serving base station and the terminal in the reserved time intervals,', 'means for determining time intervals reserved for a serving base station based on interference condition observed by a terminal, the reserved time intervals having reduced interference from an interfering base station; and', 'means for communicating transmission data between the serving base station and the terminal in the reserved time intervals,
46. A non-transitory computer-readable medium having computer executable instructions stored thereon, the instructions comprising:
code for causing at least-one computer to determine time intervals reserved for a serving base station based on interference condition observed by a terminal, the reserved time intervals having reduced interference from an interfering base station; and
code for causing the at least one computer to communicate transmission data between the serving base station and the terminal in the reserved time intervals.', 'code for causing at least-one computer to determine time intervals reserved for a serving base station based on interference condition observed by a terminal, the reserved time intervals having reduced interference from an interfering base station; and', 'code for causing the at least one computer to communicate transmission data between the serving base station and the terminal in the reserved time intervals.
47. An apparatus for wireless communication, comprising:
means for reversing time intervals for a serving base station based on interference condition observed by a terminal wherein data transmission is performed between the serving base station and the terminal in the reserved time intervals; and
means for reducing interference in the reserved time intervals by an interfering base station.', 'means for reversing time intervals for a serving base station based on interference condition observed by a terminal wherein data transmission is performed between the serving base station and the terminal in the reserved time intervals; and', 'means for reducing interference in the reserved time intervals by an interfering base station.
48. A non-transitory computer-readable medium having computer executable instructions stored thereon, the instructions comprising:
code for causing at least one computer to reserve time intervals for a serving base station based on interference condition observed by a terminal wherein data transmission is performed between the serving base station and the terminal in the reserved time intervals; and
code for causing the at least one computer to reduce interference in the reserved time intervals by an interfering base station.', 'code for causing at least one computer to reserve time intervals for a serving base station based on interference condition observed by a terminal wherein data transmission is performed between the serving base station and the terminal in the reserved time intervals; and', 'code for causing the at least one computer to reduce interference in the reserved time intervals by an interfering base station.']
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Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
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