Methods and apparatus for power efficient broadcasting and communication systems
First Claim
1. A transmission method for a base station in a cellular communication network of base stations and mobile stations, the method comprising:
- forming a plurality of frames of fixed time length, each frame containing a plurality of orthogonal frequency-division multiplexing (OFDM) symbols;
forming a plurality of first frames and a plurality of second frames among the plurality of frames, wherein;
each of the first frames contains time-frequency resources used for content multicasting or broadcasting (MB) via a single frequency network (SFN), the SFN comprising base stations in multiple cells transmitting the same MB content using OFDM and employing a same time and frequency resource; and
each of the second frames contains time-frequency resources used for data unicasting without the use of a SFN;
transmitting a sequence of consecutive frames comprising first frames carrying MB content and second frames carrying unicasting data, wherein the first frames and the second frames are intermixed in accordance with an intermixing configuration pattern and the intermixing configuration pattern is predetermined or configured at the time of transmission; and
transmitting a scheduling signal containing scheduling information, wherein the scheduling information includes a bit-map indicating the intermixing configuration pattern by using a “
1”
in the bit-map to represent a first frame and a “
0”
in the bit-map to represent a second frame, or a “
0”
in the bit-map to represent a first frame and a “
1”
in the bit-map to represent a second frame.
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Accused Products
Abstract
A method and apparatus for content multicasting and broadcasting and data unicasting in a broadband multicarrier wireless communication system. A base station is configured to transmit, and a mobile station is configured to receive, a sequence of consecutive frames. The frames comprise two types: frames containing time-frequency resources for content multicasting and broadcasting via a single frequency network, and frames containing time-frequency resources for data unicasting without the use of a single frequency network. The two types of frames are intermixed in accordance with an intermixing configuration pattern. The intermixing configuration pattern is indicated by a bit-map contained in a scheduling signal.
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Citations
22 Claims
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1. A transmission method for a base station in a cellular communication network of base stations and mobile stations, the method comprising:
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forming a plurality of frames of fixed time length, each frame containing a plurality of orthogonal frequency-division multiplexing (OFDM) symbols; forming a plurality of first frames and a plurality of second frames among the plurality of frames, wherein; each of the first frames contains time-frequency resources used for content multicasting or broadcasting (MB) via a single frequency network (SFN), the SFN comprising base stations in multiple cells transmitting the same MB content using OFDM and employing a same time and frequency resource; and each of the second frames contains time-frequency resources used for data unicasting without the use of a SFN; transmitting a sequence of consecutive frames comprising first frames carrying MB content and second frames carrying unicasting data, wherein the first frames and the second frames are intermixed in accordance with an intermixing configuration pattern and the intermixing configuration pattern is predetermined or configured at the time of transmission; and transmitting a scheduling signal containing scheduling information, wherein the scheduling information includes a bit-map indicating the intermixing configuration pattern by using a “
1”
in the bit-map to represent a first frame and a “
0”
in the bit-map to represent a second frame, or a “
0”
in the bit-map to represent a first frame and a “
1”
in the bit-map to represent a second frame. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A base station in a multi-cell wireless broadcasting and communication system using a frame structure, each frame containing a plurality of orthogonal frequency division multiplexing (OFDM) symbols, the base station comprising:
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a signal generator configured to form a plurality of first frames and a plurality of second frames, wherein; each of the first frames contains time-frequency resources used for content multicasting or broadcasting (MB) via a single frequency network (SFN), the SFN comprising base stations in multiple cells transmitting the same MB content using OFDM and employing a same time and frequency resource; and each of the second frames contains time-frequency resources used for data unicasting without the use of a SFN; and a transmitter configured to transmit; a sequence of consecutive frames comprising the first frames and the second frames that are intermixed in accordance with an intermixing configuration pattern, the intermixing configuration pattern being predetermined or configured at the time of transmission; and a scheduling signal containing scheduling information, wherein the scheduling information includes a bit-map indicating the intermixing configuration pattern by using a “
1”
in the bit-map to represent a first frame and a “
0”
in the bit-map to represent a second frame, or a “
0”
in the bit-map to represent a first frame and a “
1”
in the bit-map to represent a second frame. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification