Dynamic almost blank subframe allocation
First Claim
Patent Images
1. A base station comprising:
- a) one or more communication interfaces;
b) one or more processors; and
c) memory storing instructions that, when executed, cause said base station to;
i) transmit a first message comprising;
(1) an initial subframe allocation repetition period;
(2) an initial subframe allocation offset; and
(3) an initial subframe allocation bitmap indicating an initial plurality of subframes, said initial plurality of subframes comprising an initial plurality of Almost Blank Subframes; and
ii) transmit, after an increase in traffic load of said base station by an amount greater than a load value, a second message comprising;
(1) said initial subframe allocation repetition period;
(2) said initial subframe allocation offset; and
(3) an updated subframe allocation bitmap different from said initial subframe allocation bitmap, said updated subframe allocation bitmap indicating a second plurality of subframes, said second plurality of subframes comprising an updated plurality of Almost Blank Subframes, said updated plurality of Almost Blank Subframes comprising a smaller number of Almost Blank Subframes than said initial plurality of Almost Blank Subframes.
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Abstract
After an increase in the number of wireless devices or traffic load by an amount greater than a value, a base station transmits a message. The message comprises an updated subframe allocation bitmap indicating a second plurality of subframes including an updated plurality of almost blank subframes. The updated plurality of almost blank subframes includes a smaller number of almost blank subframes than an initial plurality of almost blank subframes.
18 Citations
20 Claims
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1. A base station comprising:
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a) one or more communication interfaces; b) one or more processors; and c) memory storing instructions that, when executed, cause said base station to; i) transmit a first message comprising; (1) an initial subframe allocation repetition period; (2) an initial subframe allocation offset; and (3) an initial subframe allocation bitmap indicating an initial plurality of subframes, said initial plurality of subframes comprising an initial plurality of Almost Blank Subframes; and ii) transmit, after an increase in traffic load of said base station by an amount greater than a load value, a second message comprising; (1) said initial subframe allocation repetition period; (2) said initial subframe allocation offset; and (3) an updated subframe allocation bitmap different from said initial subframe allocation bitmap, said updated subframe allocation bitmap indicating a second plurality of subframes, said second plurality of subframes comprising an updated plurality of Almost Blank Subframes, said updated plurality of Almost Blank Subframes comprising a smaller number of Almost Blank Subframes than said initial plurality of Almost Blank Subframes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method comprising:
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a) transmitting, by a base station, a first message comprising; (i) an initial subframe allocation repetition period; (ii) an initial subframe allocation offset; and (iii) an initial subframe allocation bitmap indicating an initial plurality of subframes, said initial plurality of subframes comprising an initial plurality of Almost Blank Subframes; and b) transmitting, by said base station and after an increase in traffic load of said base station by an amount greater than a load value, a second message comprising; (i) said initial subframe allocation repetition period; (ii) said initial subframe allocation offset; and (iii) an updated subframe allocation bitmap different from said initial subframe allocation bitmap, said updated subframe allocation bitmap indicating a second plurality of subframes, said second plurality of subframes comprising an updated plurality of Almost Blank Subframes, said updated plurality of Almost Blank Subframes comprising a smaller number of Almost Blank Subframes than said initial plurality of Almost Blank Subframes. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification