Co-channel deployment of new and legacy carrier types
First Claim
1. A method, in one or more nodes of a cellular system that includes a plurality of cells that can each be selectively operated with either a first carrier type or a second carrier type, one of the first and second carrier types either having substantially fewer reference symbols than the other or lacking a control structure supported by the other, or both, the method comprising:
- determining that a cell or cells should be switched from the first carrier type to a second carrier type, based on an evaluation of User Equipment (UE) performance criteria, andchanging the carrier type on the cell or cells from the first carrier type to the second carrier type.
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Accused Products
Abstract
Methods for changing a carrier type from a first carrier type to a second carrier type are disclosed. An example method may be implemented in one or more nodes of a cellular system that includes a plurality of cells that can each be selectively operated with either a first carrier type or a second carrier type, one of the first and second carrier types either having substantially fewer reference symbols than the other or lacking a control structure supported by the other, or both. The example method begins with determining (800) that a cell or cells should be switched from the first carrier type to a second carrier type. This may be done based on, for example, an evaluation of UE performance criteria, e.g., whether one or more UEs are capable of operating on the second carrier type and/or whether one or more UEs may receive a higher quality of service from the second carrier type. The example method continues with changing (810) the carrier type on the cell or cells from the first carrier type to the second carrier type.
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Citations
44 Claims
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1. A method, in one or more nodes of a cellular system that includes a plurality of cells that can each be selectively operated with either a first carrier type or a second carrier type, one of the first and second carrier types either having substantially fewer reference symbols than the other or lacking a control structure supported by the other, or both, the method comprising:
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determining that a cell or cells should be switched from the first carrier type to a second carrier type, based on an evaluation of User Equipment (UE) performance criteria, and changing the carrier type on the cell or cells from the first carrier type to the second carrier type. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A network node for use in a cellular system that includes a plurality of cells that can each be selectively operated with either a first carrier type or a second carrier type, one of the first and second carrier types either having substantially fewer reference symbols than the other or lacking a control structure supported by the other, or both, the network node comprising a processing circuit adapted to:
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determine that a cell or cells should be switched from the first carrier type to a second carrier type, based on an evaluation of User Equipment (UE) performance criteria, and change the carrier type on the cell or cells from the first carrier type to the second carrier type. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A method, in a mobile terminal, for managing a transition from one carrier type to another, one of the carrier types either having substantially fewer reference symbols than the other or lacking a control structure supported by the other, or both the method comprising:
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receiving an indication that a currently received carrier is changing from a first carrier type to a second carrier type; and maintaining ongoing transmission processes and Hybrid Automatic Repeat reQuest (HARQ) buffers through the change in carrier types, or maintaining Radio Resource Control configuration and cell-specific mobile terminal identifier through the change in carrier types, or both. - View Dependent Claims (34, 35, 36, 37, 38)
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39. A mobile terminal for use in a cellular system that includes a plurality of cells that can be selectively operated with either a first carrier type or a second carrier type, one of the first and second carrier types either having substantially fewer reference symbols than the other or lacking a control structure supported by the other, or both, the mobile terminal comprising a radio transceiver and a processing circuit adapted to:
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receive an indication that a currently received carrier is changing from a first carrier type to a second carrier type; and maintain ongoing transmission processes and Hybrid Automatic Repeat reQuest (HARQ) buffers through the change in carrier types, or maintaining Radio Resource Control configuration and cell-specific mobile terminal identifier through the change in carrier types, or both. - View Dependent Claims (40, 41, 42, 43, 44)
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Specification