Methods and apparatus for power efficient broadcasting and communication systems
First Claim
1. A method for a mobile station in a cellular communication network, the method comprising:
- receiving, from a base station, unicasting data in a first frame via a first frequency band and receiving multicasting or broadcasting content in a second frame via a second frequency band; and
switching from the first frequency band to a third frequency band for receiving unicasting data in a third frame while maintaining the second frequency band for receiving multicasting or broadcasting content in a fourth frame;
whereinthe switching comprises controlling radio frequency (RF) circuitry based on a retrieved RF band configuration stored locally at the mobile station;
each of the frames has a fixed time length and contains a plurality of time slots, each time slot containing a plurality of orthogonal frequency-division multiplexing (OFDM) symbols;
a boundary of a frame in the first frequency band or the third frequency band is aligned with a boundary of a frame in the second frequency band;
the second and fourth frames contain a time-frequency resource used for content multicasting or broadcasting in a single frequency network (SFN), the SFN comprising base stations in multiple cells transmitting the same multicasting or broadcasting content using the same time and frequency resource; and
the first and third frames contain a time-frequency resource used for data unicasting without the use of a SFN.
5 Assignments
0 Petitions
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.
7 Citations
15 Claims
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1. A method for a mobile station in a cellular communication network, the method comprising:
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receiving, from a base station, unicasting data in a first frame via a first frequency band and receiving multicasting or broadcasting content in a second frame via a second frequency band; and switching from the first frequency band to a third frequency band for receiving unicasting data in a third frame while maintaining the second frequency band for receiving multicasting or broadcasting content in a fourth frame; wherein the switching comprises controlling radio frequency (RF) circuitry based on a retrieved RF band configuration stored locally at the mobile station; each of the frames has a fixed time length and contains a plurality of time slots, each time slot containing a plurality of orthogonal frequency-division multiplexing (OFDM) symbols; a boundary of a frame in the first frequency band or the third frequency band is aligned with a boundary of a frame in the second frequency band; the second and fourth frames contain a time-frequency resource used for content multicasting or broadcasting in a single frequency network (SFN), the SFN comprising base stations in multiple cells transmitting the same multicasting or broadcasting content using the same time and frequency resource; and the first and third frames contain a time-frequency resource used for data unicasting without the use of a SFN. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A mobile station in a cellular communication network comprising:
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a receiving unit including a radio-frequency (RF) component and a baseband component and configured to receive, from a base station; unicasting data in a first frame via a first frequency band ands multicasting or broadcasting content in a second frame via a second frequency band; and a controller configured to control the receiving unit to switch from the first frequency band to a third frequency band for receiving unicasting data in a third frame and to maintain the second frequency band for receiving multicasting or broadcasting content in a fourth frame; wherein controlling the receiving unit to switch comprises controlling the RF component based on a retrieved RF band configuration stored locally at the mobile station; each of the frames has a fixed time length and contains a plurality of time slots, each time slot containing a plurality of orthogonal frequency-division multiplexing (OFDM) symbols; a boundary of a frame in the first frequency band or the third frequency band is aligned with a boundary of a frame in the second frequency band; the second and fourth frames contain a time-frequency resource used for content multicasting or broadcasting in a single frequency network (SFN), the SFN comprising base stations in multiple cells transmitting the same multicasting or broadcasting content using the same time and frequency resource; and the first and third frames contain a time-frequency resource used for data unicasting without the use of a SFN. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification