Methods and arrangements in a wireless communication system
First Claim
1. A method for a user equipment in a wireless communication system supporting carrier aggregation, the system comprising a radio base station configured to broadcast system information in at least two cells, the method comprising:
- receiving configuration information for an aggregation of the at least two cells from the radio base station;
identifying a first of the at least two cells based on a configuration rule stating that the first of the at least two cells has a status that is different from the status of the remaining ones of the at least two cells, wherein the received configuration information comprises an indication of which one of the at least two cells has the different status;
reading the broadcasted system information only in the identified first cell; and
thereafterreceiving a signal from the base station indicative of a change of the status the identified first cell;
responsive to the received signal, identifying a second of the at least two cells as having a status different from the status of any remaining cells; and
reading the broadcasted system information only in the identified second cell.
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Accused Products
Abstract
The present invention relates to methods and arrangements in a wireless communication system supporting carrier aggregation and comprising a radio base station configured to broadcast system information in at least two cells. The method for the user equipment comprises receiving configuration information for an aggregation of the at least two cells from the radio base station, identifying a first of the at least two cells based on a configuration rule stating that the first of the at least two cells has a status that is different from the status of the remaining cells, and reading the broadcasted system information only in the identified cell. The method may also comprise obeying one or more parameters obtained from the read system information.
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Citations
22 Claims
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1. A method for a user equipment in a wireless communication system supporting carrier aggregation, the system comprising a radio base station configured to broadcast system information in at least two cells, the method comprising:
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receiving configuration information for an aggregation of the at least two cells from the radio base station; identifying a first of the at least two cells based on a configuration rule stating that the first of the at least two cells has a status that is different from the status of the remaining ones of the at least two cells, wherein the received configuration information comprises an indication of which one of the at least two cells has the different status; reading the broadcasted system information only in the identified first cell; and
thereafterreceiving a signal from the base station indicative of a change of the status the identified first cell; responsive to the received signal, identifying a second of the at least two cells as having a status different from the status of any remaining cells; and reading the broadcasted system information only in the identified second cell. - View Dependent Claims (2, 3, 4, 5, 6, 21)
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7. A method for a radio base station in a wireless communication system supporting carrier aggregation, the radio base station being capable to transmit data to a user equipment in at least two aggregated cells, the method comprising:
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broadcasting system information in the at least two cells; and transmitting configuration information for an aggregation of the at least two cells to the user equipment, the configuration information comprising a configuration rule stating that a first one of the at least two cells has a status that is different from the status of the remaining ones of the at least two cells, wherein the configuration information also comprises an indication of which of the at least two cells has the different status, in order for the user equipment to read the broadcasted system information only in the first cell with the different status; thereafter, transmitting a signal indicative of a change of the status of the first cell, the signal enabling the user equipment to identify a second of the at least two cells as having a status different from the status of any remaining cells, in order for the user equipment to read the broadcasted information only in the second cell responsive to the signal. - View Dependent Claims (8, 9, 10)
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11. A user equipment configured to be used in a wireless communication system supporting carrier aggregation, the system comprising a radio base station configured to broadcast system information in at least two cells, the user equipment comprising:
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a receiving unit adapted to receive configuration information for an aggregation of the at least two cells from the radio base station; an identifying unit adapted to identify a first of the at least two cells based on a configuration rule stating that the first of the at least two cells has a status that is different from the status of the remaining ones of the at least two cells, wherein the received configuration information comprises an indication of which of the at least two cells has the different status; and a reading unit adapted to read the broadcasted system information only in the identified first cell; wherein the receiving unit is further adapted to thereafter receive, from the base station, a signal indicative of a change of the status of the identified first cell; wherein the identifying unit is further adapted to, responsive to the received signal, identify a second of the at least two cells as having a status different from the status of any remaining cells; and wherein the reading unit is further adapted to read the broadcasted system information only in the identified second cell. - View Dependent Claims (12, 13, 14, 15, 16, 22)
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17. A radio base station configured to be used in a wireless communication system supporting carrier aggregation, and capable to transmit data to a user equipment in at least two aggregated cells, the radio base station comprising:
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a broadcasting unit adapted to broadcast system information in the at least two cells; and a transmitting unit adapted to transmit configuration information for an aggregation of the at least two cells to the user equipment, the configuration information comprising a configuration rule stating that a first one of the at least two cells has a status that is different from the status of the remaining ones of the at least two cells, the configuration information also comprising an indication of which of the at least two cells has the different status, in order for the user equipment to read the broadcasted system information only in the first cell with the different status; the transmitting unit further adapted to thereafter transmit a signal indicative of a change of the status of the first cell, the signal enabling the user equipment to identify a second of the at least two cells as having a status different from the status of any remaining cells, in order for the user equipment to read the broadcasted information only in the second cell responsive to the signal. - View Dependent Claims (18, 19, 20)
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Specification