Method and apparatus for fast other sector interference (OSI) adjustment
First Claim
Patent Images
1. A method for managing resources in an access terminal, comprising:
- receiving, from a non-serving sector, slow other-sector interference (OSI) indications and fast OSI indications;
determining a slow interference metric and a fast interference metric based on the slow OSI indications and the fast OSI indications;
receiving a channel quality indicator (CQI) of a non-serving sector, and a CQI of a serving sector; and
adjusting an offset value (A) for managing the resources based, at least in part, on the slow interference metric, the fast interference metric, the CQI of the non-serving sector and the CQI of the serving sector,wherein adjusting the offset value Δ
is based, at least in part, on a deterministic function of at least one of an average of the slow interference metric, an average of the fast interference metric, or a ratio (rCQI) of the CQI of the non-serving sector to the CQI of the serving sector, andwherein adjusting the offset value Δ
is further based, at least in part, on a probabilistic function of at least one of previous offset value Δ
, the average of the slow interference metric, the average of the fast interference metric, or rCQI.
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Abstract
Systems and methods that facilitate management of interference and communication resources are provided. A differential approach is devised in which other-sector interference (OSI) and communication resources are managed by adjusting an offset (delta) value associated with the resources in response to receiving an indication of other-sector interference. An OSI indication can be issued based on a short and a long time scale, and effective interference metrics over time-frequency resources. The adjusted delta value is communicated to a serving access point, which reassigns communication resources in order to mitigate other-sector interference.
219 Citations
53 Claims
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1. A method for managing resources in an access terminal, comprising:
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receiving, from a non-serving sector, slow other-sector interference (OSI) indications and fast OSI indications; determining a slow interference metric and a fast interference metric based on the slow OSI indications and the fast OSI indications; receiving a channel quality indicator (CQI) of a non-serving sector, and a CQI of a serving sector; and adjusting an offset value (A) for managing the resources based, at least in part, on the slow interference metric, the fast interference metric, the CQI of the non-serving sector and the CQI of the serving sector, wherein adjusting the offset value Δ
is based, at least in part, on a deterministic function of at least one of an average of the slow interference metric, an average of the fast interference metric, or a ratio (rCQI) of the CQI of the non-serving sector to the CQI of the serving sector, andwherein adjusting the offset value Δ
is further based, at least in part, on a probabilistic function of at least one of previous offset value Δ
, the average of the slow interference metric, the average of the fast interference metric, or rCQI. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for managing resources in an access terminal, comprising:
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receiving, from a non-serving sector, slow other-sector interference (OSI) indications and fast OSI indications; determining a slow interference metric and a fast interference metric based on the slow OSI indications and the fast OSI indications; receiving a channel quality indicator (CQI) of a non-serving sector, and a CQI of a serving sector; and adjusting an offset value (A) for managing the resources based, at least in part, on the slow interference metric, the fast interference metric, the CQI of the non-serving sector and the CQI of the serving sector, wherein adjusting the offset value Δ
includes selecting between adjusting the offset value Δ
to a different value and not adjusting the offset value Δ
to a different value, the selecting based on a result of a probabilistic function of at least one of previous offset value Δ
, an average of the slow interference metric, an average of the fast interference metric, or a ratio (rCQI) of the CQI of the non-serving sector to the CQI of the serving sector rCQI. - View Dependent Claims (22)
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23. A wireless communication apparatus, comprising:
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an integrated circuit configured to receive, from a non-serving sector, slow other-sector interference (OSI) indications and fast OSI indications, to determine a slow interference metric and a fast interference metric based on the slow OSI indications and the fast OSI indications, to receive a channel quality indicator (CQI) of a non-serving sector, and a CQI of a serving sector, and to adjust an offset value (Δ
) for managing the resources based, at least in part, on the slow interference metric, the fast interference metric, the CQI of the non-serving sector and the CQI of the serving sector; anda memory coupled to the integrated circuit for storing data, wherein the integrated circuit is further configured to store the offset value Δ
in the memory, retrieve the offset value Δ
from the memory, and store an adjusted offset value Δ
in the memory, andwherein the integrated circuit is further configured to maintain a probability distribution for the offset value Δ
, the slow interference metric, the fast interference metric, the CQI of the non-serving sector and the CQI of the serving sector. - View Dependent Claims (24)
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25. An apparatus for managing resources in an access terminal, comprising:
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means for receiving, from a non-serving sector, slow other-sector interference (OSI) indications and fast OSI indications; means for determining a slow interference metric and a fast interference metric based on the slow OSI indications and the fast OSI indications; means for receiving a channel quality indicator (CQI) of a non-serving sector, and a CQI of a serving sector; and means for adjusting an offset value (A) for managing the resources based, at least in part, on the slow interference metric, the fast interference metric, the CQI of the non-serving sector and the CQI of the serving sector wherein the means for adjusting the offset value Δ
is configured to perform the adjusting based, at least in part, on a deterministic function of at least one of an average of the slow interference metric, an average of the fast interference metric, or a ratio (rCQI) of the CQI of the non-serving sector to the CQI of the serving sector, andwherein the means for adjusting the offset value Δ
is configured to perform the adjusting further based, at least in part, on a probabilistic function of at least one of previous offset value Δ
, the average of the slow interference metric, the average of the fast interference metric, and rCQI. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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45. An apparatus for managing resources in an access terminal, comprising:
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means for receiving, from a non-serving sector, slow other-sector interference (OSI) indications and fast OSI indications; means for determining a slow interference metric and a fast interference metric based on the slow OSI indications and the fast OSI indications; means for receiving a channel quality indicator (CQI) of a non-serving sector, and a CQI of a serving sector; and means for adjusting an offset value (Δ
) for managing the resources based, at least in part, on the slow interference metric, the fast interference metric, the CQI of the non-serving sector and the CQI of the serving sector,wherein the adjusting the offset value Δ
performed by the means for adjusting includes selecting between adjusting the offset value Δ
to a different value and not adjusting the offset value Δ
to a different value, the selecting based on a result of a probabilistic function of at least one of previous offset value Δ
, an average of the slow interference metric, an average of the fast interference metric, or a ratio (rCQI) of the CQI of the non-serving sector to the CQI of the serving sector rCQI. - View Dependent Claims (46)
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47. A non-transitory computer-readable storage medium storing instructions for causing a computer to manage resources in an access terminal, the computer-readable storage medium storing instructions for causing a computer to:
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receive, from a non-serving sector, slow other-sector interference (OSI) indications and fast OSI indications; determine a slow interference metric and a fast interference metric based on the slow OSI indications and the fast OSI indications; receive a channel quality indicator (CQI) of a non-serving sector, and a CQI of a serving sector; and adjust an offset value (A) for managing the resources based, at least in part, on the slow interference metric, the fast interference metric, the CQI of the non-serving sector and the CQI of the serving sector, wherein the instructions for causing the computer to adjust the offset value Δ
include instructions for causing the computer to adjust the offset value Δ
based, at least in part, on a deterministic function of at least one of an average of the slow interference metric, an average of the fast interference metric, or a ratio (rCQI) of the CQI of the non-serving sector to the CQI of the serving sector, andinstructions for causing the computer to adjust the offset value Δ
further based, at least in part, on a probabilistic function of at least one of previous offset value Δ
, the average of the slow interference metric, the average of the fast interference metric, or rCQI. - View Dependent Claims (48, 49, 50, 51, 52, 53)
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Specification