US 8,411,646 B2 · Opportunistic uplink scheduling

Abstract

Systems and methodologies are described that facilitate scheduling uplink transmissions. For instance, a time sharing scheme can be utilized such that differing mobile devices can be scheduled to transmit during differing time slots; however, it is also contemplated that a static scheme can be employed. Pursuant to an illustration, an interference budget can be combined with a time varying weighting factor associated with a base station; the weighting factor can be predefined and/or adaptively adjusted (e.g., based upon a load balancing mechanism). Moreover, the weighted interference budget can be leveraged for selecting mobile devices for uplink transmission (e.g., based at least in part upon path loss ratios of the mobile devices). Further, disparate interference budgets can be utilized by differing channels of a sector at a particular time. Also, for example, a base station can assign a loading factor to be utilized by wireless terminal(s) for generating channel quality report(s).

Claims37

Dependent claims

A method that facilitates scheduling uplink transmissions in a communication network including a first base station that includes a first sector utilizing a dynamic loading offset level pattern, the method comprising:

broadcasting a first loading factor based on a first loading offset level determined from a first time varying loading offset level pattern corresponding to a first time slot;
broadcasting a second loading factor based on a second loading offset level determined from the first time varying loading offset level pattern corresponding to a second time slot, the first loading offset level differing from the second loading offset level by at least 0.5 dB;
receiving channel quality reports from one or more mobile devices pertaining to evaluated path loss ratios during the first time slot and the second time slot;
scheduling a first mobile device for uplink transmission during the first time slot on a first channel based on the channel quality reports and the first loading factor;
scheduling a second mobile device for uplink transmission during the second time slot on the first channel based on the channel quality reports and the second loading factor;
and
transmitting assignments to the first mobile device and the second mobile device related to the scheduled uplink transmissions.

4 more elements

A wireless communications apparatus, comprising:

a memory that retains instructions related to broadcasting a first loading factor based on a first loading offset level determined from a first time varying loading offset level pattern corresponding to a first time slot, broadcasting a second loading factor based on a second loading offset level determined from the first time varying loading offset level pattern corresponding to a second time slot, the first loading offset level differs from the second loading offset level by at least 0.5 dB, receiving channel quality reports from one or more mobile devices pertaining to evaluated path loss ratios during the first time slot and the second time slot, scheduling a first mobile device for uplink transmission during the first time slot on a first channel based on the channel quality reports and the first loading factor, scheduling a second mobile device for uplink transmission during the second time slot on the first channel based on the channel quality reports and the second loading factor, and sending assignments to the first mobile device and the second mobile device related to the scheduled uplink transmissions;
and
a processor, coupled to the memory, configured to execute the instructions retained in the memory.

A wireless communications apparatus that enables scheduling uplink transmissions by utilizing a dynamic loading offset level pattern, comprising:

means for broadcasting a first loading factor based on a first loading offset level determined from a first time varying loading offset level pattern based on a first time slot;
means for broadcasting a second loading factor based on a second loading offset level determined from the first time varying loading offset level pattern based on a second time slot, wherein the first loading offset level differs from the second loading offset level by at least 0.5 dB;
means for obtaining channel quality reports from at least one mobile device related to analyzed path loss ratios;
means for scheduling a first mobile device for uplink transmission during the first time slot on a first channel based on the channel quality reports and the first loading factor;
means for scheduling a second mobile device for uplink transmission during the second time slot on the first channel based on the channel quality reports and the second loading factor;
and
means for sending assignments to the first mobile device and the second mobile device.

4 more elements

A non-transitory machine-readable medium having stored thereon machine-executable instructions for controlling a first base station, the non-transitory machine-readable medium including machine-executable instructions which when executed by a processor control said first station to perform the steps of:

broadcasting a first loading factor based on a first loading offset level and a second loading factor based on a second loading offset level identified from a first time varying loading offset level pattern, the first loading factor corresponding to a first time slot and the second loading factor corresponding to a second time slot, wherein the first loading offset level differs from the second loading offset level by at least 0.5 dB;
receiving channel quality reports from at least one mobile device related path loss ratios generated based upon the first loading factor and the second loading factor;
and
scheduling a first mobile device for uplink transmission during the first time slot and a second mobile device for uplink transmission during the second time slot based upon the channel quality reports.

1 more element

A wireless communications apparatus, comprising:

a memory that retains instructions related to obtaining a first loading factor based on at least a first loading offset information from a first base station during a first time slot, deciphering a first loading offset level pattern based upon the first loading offset information, generating a first interference ratio during a second time slot based on a first loading offset level recognized based upon the first loading offset level pattern, determining a second interference ratio during a third time slot based on a second loading offset level recognized based upon the first loading offset level pattern, the first loading offset level and the second loading offset level differing by at least 0.5 dB, transmitting a first signal that includes the first interference ratio during the second time slot to the first base station, and transmitting a second signal that includes the second interference ratio during the third time slot to the first base station;
and
a processor, coupled to the memory, configured to execute the instructions retained in the memory.

A non-transitory machine-readable medium having stored thereon machine-executable instructions for controlling a wireless mobile device, said non-transitory machine-readable medium including machine-executable instructions which when executed by a processor control said wireless mobile device to perform the steps of:

obtaining a first loading factor based on at least a first loading offset information from a first base station at a first time slot;
determining a first loading offset level pattern from the first loading offset information by employing at least one of a lookup table or a predetermined function;
evaluating a first interference ratio at a second time slot based on a first loading offset level determined from the first loading offset level pattern;
determining a second interference ratio at a third time slot based on a second loading offset level determined from the first loading offset level pattern, the first loading offset level and the second loading offset level differing by at least 0.5 dB;
transmitting a first signal that includes the first interference ratio at the second time slot to the first base station;
and
transmitting a second signal that includes the second interference ratio at the third time slot to the first base station.

4 more elements

Dependencies are inferred from the claim text.

Opportunistic uplink scheduling

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Opportunistic uplink scheduling

Life of this patent

Abstract

Claims37