Efficient special subframe allocation
First Claim
Patent Images
1. A method comprising:
- a) configuring, by a base station;
second, fourth, seventh, and ninth subframes of every radio frame in a plurality of radio frames as special subframes;
b) transmitting, by said base station, a fist message to a plurality of wireless devices in connected mode, said fist message comprising a subframe allocation bitmap indicating a plurality of subframes in said plurality of radio frames, said plurality of subframes consisting of said plurality of special subframes; and
c) transmitting, by said base station, at least one second message to a subset of said plurality of wireless devices, said at least one second message comprising;
i) a first measurement subframe allocation bitmap configuring a first plurality of measurement subframes of a primary carrier for said subset of said plurality of wireless devices, said first plurality of measurement subframes excluding said plurality of special subframes in each radio frame in said plurality of radio frames; and
ii) a second measurement subframe allocation bitmap configuring a second plurality of measurement subframes of said primary carrier for said subset of said plurality of wireless devices, said second plurality of measurement subframes excluding any of the subframes in said first plurality of measurement subframes; and
wherein;
i) said first measurement subframe allocation bitmap and said second measurement subframe allocation bitmap are longer than said subframe allocation bitmap; and
ii) during a majority of symbols of a special subframe of said base station;
no signal is transmitted by said base station;
or signals are transmitted at a special subframe power level that is substantially lower than a transmit power during a non-special subframe.
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Abstract
A base station transmits a message to a plurality of wireless devices in connected mode. The message comprises a subframe allocation bitmap indicating a plurality of subframes. The plurality of subframes comprises a plurality of special subframes. During majority of symbols of a special subframe of a base station, no signal is transmitted by the base station or signals are transmitted at a special subframe power level that is different from a transmit power during a non-special subframe.
29 Citations
20 Claims
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1. A method comprising:
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a) configuring, by a base station;
second, fourth, seventh, and ninth subframes of every radio frame in a plurality of radio frames as special subframes;b) transmitting, by said base station, a fist message to a plurality of wireless devices in connected mode, said fist message comprising a subframe allocation bitmap indicating a plurality of subframes in said plurality of radio frames, said plurality of subframes consisting of said plurality of special subframes; and c) transmitting, by said base station, at least one second message to a subset of said plurality of wireless devices, said at least one second message comprising; i) a first measurement subframe allocation bitmap configuring a first plurality of measurement subframes of a primary carrier for said subset of said plurality of wireless devices, said first plurality of measurement subframes excluding said plurality of special subframes in each radio frame in said plurality of radio frames; and ii) a second measurement subframe allocation bitmap configuring a second plurality of measurement subframes of said primary carrier for said subset of said plurality of wireless devices, said second plurality of measurement subframes excluding any of the subframes in said first plurality of measurement subframes; and wherein; i) said first measurement subframe allocation bitmap and said second measurement subframe allocation bitmap are longer than said subframe allocation bitmap; and ii) during a majority of symbols of a special subframe of said base station;
no signal is transmitted by said base station;
or signals are transmitted at a special subframe power level that is substantially lower than a transmit power during a non-special subframe. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method comprising:
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a) configuring, by a base station;
third and eighth subframes of every radio frame in a plurality of radio frames as special subframes;b) transmitting, by said base station, a fist message to a plurality of wireless devices in connected mode, said fist message comprising a subframe allocation bitmap indicating a plurality of subframes in said plurality of radio frames, said plurality of subframes consisting of said plurality of special subframes; and c) transmitting, by said base station, at least one second message to a subset of said plurality of wireless devices, said at least one second message comprising; i) a first measurement subframe allocation bitmap configuring a first plurality of measurement subframes of a primary carrier for said subset of said plurality of wireless devices, said first plurality of measurement subframes excluding said plurality of special subframes in each radio frame in said plurality of radio frames; and ii) a second measurement subframe allocation bitmap configuring a second plurality of measurement subframes of said primary carrier for said subset of said plurality of wireless devices, said second plurality of measurement subframes excluding any of the subframes in said first plurality of measurement subframes; and wherein; i) said first measurement subframe allocation bitmap and said second measurement subframe allocation bitmap are longer than said subframe allocation bitmap; and ii) during a majority of symbols of a special subframe of said base station;
no signal is transmitted by said base station;
or signals are transmitted at a special subframe power level that is substantially lower than a transmit power during a non-special subframe. - View Dependent Claims (9, 10, 11, 12, 13)
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14. 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) configure second, fourth and eighth subframes of every radio frame in a plurality of radio frames as special subframes; and ii) transmit a fist message to a plurality of wireless devices in connected mode, said fist message comprising a subframe allocation bitmap indicating a plurality of subframes in said plurality of radio frames, said plurality of subframes consisting of said plurality of special subframes; iii) transmit at least one second message comprising; (1) a first measurement subframe allocation bitmap indicating a first plurality of measurement subframes, said first plurality of measurement subframes excluding said plurality of special subframes in each radio frame in said plurality of radio frames; and (2) a second measurement subframe allocation bitmap configuring a second plurality of measurement subframes, said second plurality of measurement subframes excluding any of the subframes in said first plurality of measurement subframes; and wherein; i) said first measurement subframe allocation bitmap and said second measurement subframe allocation bitmap are longer than said subframe allocation bitmap; and ii) during a majority of symbols of a special subframe of said base station;
no signal is transmitted by said base station;
or signals are transmitted at a special subframe power level that is substantially lower than a transmit power during a non-special subframe. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification