Method of aligning physical channels for uplink transmission
First Claim
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1. A method of aligning a plurality of physical channels, comprising:
- aligning first and second uplink physical channels based on a timing offset that aligns subframes of a shared control channel (SCCH) with a start of a plurality of subframes of a common control channel that is used as a timing reference for all physical channels received in the downlink or physical channels to be transmitted in the uplink, the timing offset representing a processing time required at a user equipment to decode a subframe of the shared control channel; and
transmitting said first and second channels over an uplink at a time instant different than that of a third uplink physical channel, such that none of subframes of said first and second channels transmitted in the uplink overlap with uplink transmission of a subframe of said third channel, said first and second channels including a control channel and a data channel, said timing offset preventing said control channel from being transmitted in the uplink at a same time as said third channel.
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Abstract
In a method for aligning a plurality of physical channels for uplink transmission two or more physical channels may be aligned based on a timing offset so that the two channels are transmitted in the uplink at a time instant different than a time of uplink transmission for a third physical channel. Accordingly, the two physical channels may be code multiplexed with additional physical channels other than the third physical channel to generate a code-multiplexed signal to be used for uplink transmission. The timing offset information may be assigned to the user from a base station, for example, in order to align the two physical channels. Accordingly, an increase in peak-to-average power ratio my be avoided and/or reduced if multiplexing the two physical channels with other physical channels for uplink transmission.
53 Citations
12 Claims
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1. A method of aligning a plurality of physical channels, comprising:
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aligning first and second uplink physical channels based on a timing offset that aligns subframes of a shared control channel (SCCH) with a start of a plurality of subframes of a common control channel that is used as a timing reference for all physical channels received in the downlink or physical channels to be transmitted in the uplink, the timing offset representing a processing time required at a user equipment to decode a subframe of the shared control channel; and transmitting said first and second channels over an uplink at a time instant different than that of a third uplink physical channel, such that none of subframes of said first and second channels transmitted in the uplink overlap with uplink transmission of a subframe of said third channel, said first and second channels including a control channel and a data channel, said timing offset preventing said control channel from being transmitted in the uplink at a same time as said third channel. - View Dependent Claims (2, 3, 4)
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5. A method of multiplexing a plurality of physical channels for uplink transmission, comprising:
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aligning first and second physical channels based on a timing offset that aligns subframes of a shared control channel (SCCH) with a start of a plurality of subframes of a common control channel that is used as a timing reference for all physical channels received in the downlink or physical channels to be transmitted in the uplink, the timing offset representing a processing time required at a user equipment to decode a subframe of the shared control channel; transmitting said first and second channels in the uplink at a time instant different than a time of uplink transmission for a third physical channel, such that none of subframes of said first and second channels transmitted in the uplink overlap with uplink transmission of a subframe of said third channel; and code multiplexing said first and second physical channels with additional physical channels other than said third physical channel at said different time instant to generate a code-multiplexed signal to be used for uplink transmission, said first and second channels including a control channel and a data channel, said timing offset preventing said control channel from being transmitted in the uplink at a same time as said third channel. - View Dependent Claims (6, 7, 8)
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9. A method for scheduling transmission of a plurality of physical channels in the uplink, comprising:
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assigning timing offset information to a user for aligning first and second uplink physical channels that aligns subframes of a shared control channel (SCCH) with a start of a plurality of subframes of a common control channel that is used as a timing reference for all physical channels received in the downlink or physical channels to be transmitted in the uplink, the timing offset representing a processing time required at a user equipment to decode a subframe of the shared control channel; and transmitting said first and second channels in the uplink at a time instant different than a time of uplink transmission for a third uplink physical channel, such that none of subframes of said first and second channels transmitted in the uplink overlap with uplink transmission of a subframe of said third channel, said first and second channels including a control channel and a data channel, said timing offset preventing said control channel from being transmitted in the uplink at a same time as said third channel. - View Dependent Claims (10, 11)
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12. A method of avoiding an increase in peak-to-average power ratio if multiplexing a plurality of physical channels for uplink transmission, comprising:
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aligning first and second physical channels based on a timing offset that aligns subframes of a shared control channel (SCCH) with a start of a plurality of subframes of a common control channel that is used as a timing reference for all physical channels received in the downlink or physical channels to be transmitted in the uplink, the timing offset representing a processing time required at a user equipment to decode a subframe of the shared control channel; multiplexing said first and second channels; and transmitting said first and second channels in the uplink at a time instant different than a time of uplink transmission for a third physical channel, such that none of subframes of said first and second channels transmitted in the uplink overlap with uplink transmission of a subframe of said third channel, said first and second channels including a control channel and a data channel, said timing offset preventing said control channel from being transmitted in the uplink at a same time as said third channel.
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Specification
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Current AssigneeAlcatel-Lucent USA, Inc. (Nokia Corporation)
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Original AssigneeAlcatel-Lucent USA, Inc. (Nokia Corporation)
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InventorsLiu, Jung-Tao
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Primary Examiner(s)Ngo; Ricky
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Assistant Examiner(s)SINKANTARAKORN, PAWARIS
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Application NumberUS10/671,638Publication NumberTime in Patent Office2,360 DaysField of Search370/335, 370/342, 370/350, 370/479, 370503-524, 370/324, 375/365, 375/367, 375/371US Class Current370/350CPC Class CodesH04B 2201/70706 with means for reducing the...H04J 3/0682 by delay compensation, e.g....
