Method and system for managing modulation and coding scheme
First Claim
1. A method for managing a modulation and coding scheme (MCS), comprising:
- a base station obtaining a downlink channel quality indicator (CQI) and a MCS reported by a trunking terminal when a block error ratio of the trunking terminal reaches a pre-stored block error ratio threshold;
the base station comparing a current CQI of a group with a locally stored CQI reported by the group, wherein the CQI reported by the group is a minimum in received CQIs reported by trunking terminals in the group respectively; and
if a comparison result is that the CQI reported by the group is smaller than the current CQI of the group, the base station initiating an operation of updating an MCS value;
wherein, the base station initiating an operation of updating the MCS comprises;
when an MCS reported by the group is smaller than or equal to a group MCS, decreasing a group MCS outer ring value of the base station by one order, wherein the MCS reported by the group is a minimum of the MCSs corresponding to the CQIs reported by the trunking terminals when the block error ratios of the trunking terminals reach the pre-stored block error ratio threshold, the group MCS is an MCS determined during a previous scheduling;
when a counter for group outer-ring scheduling reaches a preset threshold of a counter for MCS outer-ring scheduling, the base station increasing the group MCS outer-ring value by one order, and clearing the counter for group outer ring scheduling;
wherein, when the MCS corresponding to an updated CQI reported by the group in a pre-stored group CQI and MCS mapping table is smaller than the group MCS, or, when the MCS reported by the group is smaller than or equal to the group MCS, the counter for group outer-ring scheduling is cleared;
every time the base station periodically schedules the MCS value, the counter for group outer-ring scheduling is increased by one; and
according to an adjusted MCS outer-ring value, the base station determining the MCS value of the scheduling of this time.
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Abstract
a method and system for managing a modulation and coding scheme (MCS). The method includes: a base station obtaining a downlink channel quality indicator (CQI) when a block error ratio of a trunking terminal reaches a pre-stored block error ratio threshold; the base station comparing a current CQI of a group with a CQI locally stored and reported by the group, wherein the CQI reported by the group is the minimum value in received CQIs reported by trunking terminals in the group respectively; and if a comparison result is that the CQI reported by the group is smaller than the current CQI of the group, the base station initiating an operation of updating an MCS value.
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Citations
8 Claims
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1. A method for managing a modulation and coding scheme (MCS), comprising:
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a base station obtaining a downlink channel quality indicator (CQI) and a MCS reported by a trunking terminal when a block error ratio of the trunking terminal reaches a pre-stored block error ratio threshold; the base station comparing a current CQI of a group with a locally stored CQI reported by the group, wherein the CQI reported by the group is a minimum in received CQIs reported by trunking terminals in the group respectively; and if a comparison result is that the CQI reported by the group is smaller than the current CQI of the group, the base station initiating an operation of updating an MCS value; wherein, the base station initiating an operation of updating the MCS comprises; when an MCS reported by the group is smaller than or equal to a group MCS, decreasing a group MCS outer ring value of the base station by one order, wherein the MCS reported by the group is a minimum of the MCSs corresponding to the CQIs reported by the trunking terminals when the block error ratios of the trunking terminals reach the pre-stored block error ratio threshold, the group MCS is an MCS determined during a previous scheduling; when a counter for group outer-ring scheduling reaches a preset threshold of a counter for MCS outer-ring scheduling, the base station increasing the group MCS outer-ring value by one order, and clearing the counter for group outer ring scheduling;
wherein, when the MCS corresponding to an updated CQI reported by the group in a pre-stored group CQI and MCS mapping table is smaller than the group MCS, or, when the MCS reported by the group is smaller than or equal to the group MCS, the counter for group outer-ring scheduling is cleared;
every time the base station periodically schedules the MCS value, the counter for group outer-ring scheduling is increased by one; andaccording to an adjusted MCS outer-ring value, the base station determining the MCS value of the scheduling of this time. - View Dependent Claims (2, 3, 4)
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5. A system for managing a modulation and coding scheme (MCS), comprising a base station, wherein the base station comprises:
- an obtaining processor, a comparing processor, an updating processor and a non-transitory storage medium storing computer programs that when executed cause the processors to perform following corresponding steps;
the obtaining processor obtaining a downlink channel quality indicator (CQI) and a MCS reported by a trunking terminal when a block error ratio of the trunking terminal reaches a pre-stored block error ratio threshold; the comparing processor, which is configured to connect with the obtaining processor, comparing a current CQI of a group with a locally stored CQI reported by the group, wherein the CQI reported by the group is a minimum in received CQIs reported by trunking terminals in the group respectively; and the updating processor, which is configured to connect to the comparing processor, initiating an operation of updating an MCS value if a comparison result is that the CQI reported by the group is smaller than the current CQI of the group; wherein, the updating processor further comprises; a controlling circuit, which is configured to;
when an MCS reported by the group is smaller than or equal to the group MCS, decrease a group MCS outer ring value by one order, wherein the MCS reported by the group is a minimum of the MCSs corresponding to the CQIs reported by the trunking terminals when the block error ratios of the trunking terminals reach the pre-stored block error ratio threshold, the group MCS is an MCS determined during a previous scheduling; and
,when a counter for group outer-ring scheduling reaches a preset threshold of a counter for MCS outer-ring scheduling, increase the group MCS outer-ring value by one order, and clear the counter for group outer ring scheduling;
wherein, when the MCS corresponding to an updated CQI reported by the group in a pre-stored group CQI and MCS mapping table is smaller than the group MCS, or, when the MCS reported by the group is smaller than or equal to the group MCS, clear the counter for group outer-ring scheduling; and
every time the base station periodically schedules the MCS value, increase the counter for group outer-ring scheduling by one; anda second determining circuit, which is configured to;
connect to the controlling circuit, and determine the MCS value of the scheduling of this time according to an adjusted MCS outer-ring value. - View Dependent Claims (6, 7, 8)
- an obtaining processor, a comparing processor, an updating processor and a non-transitory storage medium storing computer programs that when executed cause the processors to perform following corresponding steps;
Specification