SYNCHRONIZATION TRANSMISSIONS IN A WIRELESS COMMUNICATION SYSTEM
First Claim
1. An apparatus comprising:
- a processor configured to send a first synchronization transmission in a first location of a frame, and to send a second synchronization transmission in a second location of the frame, wherein a first distance between the first and second locations of the frame is different from a second distance between the second location of the frame and the first location of a next frame; and
a memory coupled to the processor.
1 Assignment
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Accused Products
Abstract
To support cell search, multiple (e.g., two) synchronization transmissions are sent in a frame with non-uniform spacing. Information is conveyed via the non-equal distances between consecutive synchronization transmissions. Multiple levels of non-uniform spacing may be used to convey different types of information. In one design, the multiple synchronization transmissions are sent in different subframes of a frame, and each synchronization transmission is sent in one of multiple symbol periods in a respective subframe. The synchronization transmissions may be sent in non-evenly spaced subframes to convey frame boundary. One synchronization transmission may be sent in one of multiple possible symbol periods depending on the information, e.g., a particular group of cell IDs, being conveyed. The distances between synchronization transmissions may also be used to convey cyclic prefix length. A secondary synchronization transmission carrying a cell ID may be sent at a predetermined offset from one of the multiple synchronization transmissions.
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Citations
51 Claims
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1. An apparatus comprising:
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a processor configured to send a first synchronization transmission in a first location of a frame, and to send a second synchronization transmission in a second location of the frame, wherein a first distance between the first and second locations of the frame is different from a second distance between the second location of the frame and the first location of a next frame; and a memory coupled to the processor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An apparatus comprising:
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a processor configured to send a first primary synchronization code (PSC) on a primary synchronization channel (P-SCH) in a first location of a frame, and to send a second PSC on the P-SCH in a second location of the frame, wherein a first distance between the first and second locations of the frame is different from a second distance between the second location of the frame and the first location of a next frame; and a memory coupled to the processor.
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16. A method comprising:
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sending a first synchronization transmission in a first location of a frame; and sending a second synchronization transmission in a second location of the frame, wherein a first distance between the first and second locations of the frame is different from a second distance between the second location of the frame and the first location of a next frame. - View Dependent Claims (17, 18, 19, 20)
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21. An apparatus comprising:
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means for sending a first synchronization transmission in a first location of a frame; and means for sending a second synchronization transmission in a second location of the frame, wherein a first distance between the first and second locations of the frame is different from a second distance between the second location of the frame and the first location of a next frame. - View Dependent Claims (22, 23)
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24. A computer-readable medium including instructions stored thereon, comprising:
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a first instruction set for sending a first synchronization transmission in a first location of a frame; and a second instruction set for sending a second synchronization transmission in a second location of the frame, wherein a first distance between the first and second locations of the frame is different from a second distance between the second location of the frame and the first location of a next frame. - View Dependent Claims (25)
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26. An apparatus comprising:
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a processor configured to receive a first synchronization transmission in a first location of a frame, to receive a second synchronization transmission in a second location of the frame, to perform detection for the first and second synchronization transmissions, and to determine a first distance between the first and second locations of the frame, the first distance being different from a second distance between the second location of the frame and the first location of a next frame; and a memory coupled to the processor. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34)
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35. A method comprising:
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receiving a first synchronization transmission in a first location of a frame; receiving a second synchronization transmission in a second location of the frame; performing detection for the first and second synchronization transmissions; and determining a first distance between the first and second locations of the frame, the first distance being different from a second distance between the second location of the frame and the first location of a next frame. - View Dependent Claims (36, 37, 38, 39)
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40. An apparatus comprising:
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means for receiving a first synchronization transmission in a first location of a frame; means for receiving a second synchronization transmission in a second location of the frame; means for performing detection for the first and second synchronization transmissions; and means for determining a first distance between the first and second locations of the frame, the first distance being different from a second distance between the second location of the frame and the first location of a next frame. - View Dependent Claims (41, 42)
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43. A computer-readable medium including instructions stored thereon, comprising:
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a first instruction set for receiving a first synchronization transmission in a first location of a frame; a second instruction set for receiving a second synchronization transmission in a second location of the frame; a third instruction set for performing detection for the first and second synchronization transmissions; and a fourth instruction set for determining a first distance between the first and second locations of the frame, the first distance being different from a second distance between the second location of the frame and the first location of a next frame. - View Dependent Claims (44)
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45. An apparatus comprising:
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a processor configured to send a primary synchronization transmission in a first location of a frame, the first location being non-overlapping with at least one other location used for at least one other primary synchronization transmission sent by at least one neighboring cell, and to send a secondary synchronization transmission in a second location of the frame; and a memory coupled to the processor. - View Dependent Claims (46, 47)
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48. An apparatus comprising:
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a processor configured to receive a primary synchronization transmission from a first cell in a first location of a frame, the first location being non-overlapping with at least one other location used for at least one other primary synchronization transmission sent by at least one neighboring cell in a synchronized network, and to receive a secondary synchronization transmission from the first cell in a second location of the frame; and a memory coupled to the processor. - View Dependent Claims (49, 50, 51)
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Specification