Uplink control channel allocation
First Claim
1. A method of allocating uplink control channels in a communication system, the method comprising:
- at a resource scheduler;
identifying a block of data to be scheduled for transport to a user equipment (UE);
signaling a downlink data channel grant identifying a downlink data channel to be used by the UE for receiving the block of data;
first reserving resources for the downlink data channel; and
substantially concurrently with the first reserving, second reserving resources for an uplink control channel that is dedicated for use by the UE, the resources for the uplink control channel reserved for a longer time duration than the resources for the downlink data channel.
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Accused Products
Abstract
Various methods of allocating uplink control channels in a communication system are implemented at a resource scheduler or a user equipment (UE). In one method the scheduler reserves resources for a downlink data channel and signals a corresponding downlink data channel grant and also reserves resources for a persistent uplink control channel for a longer duration than the data channel grant. Signaling overhead associated with a grant for this persistent uplink control channel is reduced over a full dynamic grant. A predetermined rule can be used at the scheduler and at the UE to avoid overhead signaling associated with a grant for this persistent control channel. Predetermined rules at the UE and scheduler can also be used to reserve appropriate resources and select appropriate MCS levels for control information and the control information and uplink data can be transported over a common uplink channel when a time overlap occurs between an uplink data channel and the persistent control channel.
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Citations
21 Claims
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1. A method of allocating uplink control channels in a communication system, the method comprising:
at a resource scheduler; identifying a block of data to be scheduled for transport to a user equipment (UE); signaling a downlink data channel grant identifying a downlink data channel to be used by the UE for receiving the block of data; first reserving resources for the downlink data channel; and substantially concurrently with the first reserving, second reserving resources for an uplink control channel that is dedicated for use by the UE, the resources for the uplink control channel reserved for a longer time duration than the resources for the downlink data channel. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of allocating uplink channels in a communication system, the method comprising:
at a resource scheduler; receiving an uplink data call request from a user equipment (UE); selecting a data modulation coding scheme (MCS) responsive to the uplink data call request; reserving resources for an uplink channel to be used by the UE for transmission of uplink data in accordance with the data MCS, the uplink data corresponding to the uplink data call request, the resources sufficient for transmission of data non-associated (DNA) control information in accordance with a control MCS when the transmission of the DNA control information will time overlap the transmission of uplink data, the control MCS determined in accordance with a predetermined rule known to the resource scheduler and the UE; and signaling an uplink channel grant identifying the uplink channel including the data MCS to the UE. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. A method at a resource scheduler of allocating uplink channels in a communication system, the method comprising:
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signaling a persistent uplink control channel grant to a user equipment (UE) to specify a persistent uplink control channel, the persistent uplink control channel for use by the UE for transmission of data non-associated (DNA) control information; receiving an uplink data call request from the UE; selecting a data modulation coding scheme (MCS) responsive to the uplink data call request and the DNA control information that will be concurrently transmitted by the UE; reserving resources for an uplink channel to be used by the UE for transmission of uplink data in accordance with the data MCS, the uplink data corresponding to the uplink data call request, the resources sufficient for transmission of the DNA control information in accordance with a control MCS, when the transmission of the DNA control information will be concurrent with the transmission of uplink data, the control MCS determined in accordance with a predetermined rule known to the resource scheduler and the UE; and signaling an uplink channel grant identifying the uplink channel including the data MCS to the UE. - View Dependent Claims (16, 17, 18)
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19. A method at a user equipment of choosing an uplink control channel in a communication system, the method comprising:
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receiving a persistent uplink control channel grant specifying a persistent uplink control channel for use by the UE for transmission of data non-associated (DNA) control information; receiving an uplink data channel grant specifying an uplink data channel and including a data MCS that overlaps a portion of the persistent control channel grant; mapping the data MCS to a control MCS based on a predetermined rule known to the UE and a resource scheduler; and transmitting uplink data in accordance with the data MCS and DNA control information in accordance with the control MCS on the uplink data channel. - View Dependent Claims (20, 21)
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Specification