Identifying Multi-Component Carrier Cells
First Claim
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1. A method of searching for a cell having a multi-component carrier in a radio communication system, comprising:
- receiving a signal transmitted by the cell on a carrier frequency having a first predetermined frequency;
determining a first cell identity (ID) based on the received signal according to a cell search procedure carried out on received signals at the first predetermined frequency;
reading extended synchronization information about multi-component carriers that is broadcast by the cell on the first predetermined frequency, wherein the extended synchronization information includes a second cell ID associated with a second predetermined carrier frequency; and
based on the extended synchronization information, carrying out a cell search procedure on received signals at the second predetermined carrier frequency in order to determine the cell having the second cell ID.
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Abstract
Methods and apparatus for generating and determining multi-component carrier cells, without the use of neighbor-cell lists, are described. Methods for generating and informing a communication system terminal about other component carriers belonging to a certain cell identity (ID), and methods and apparatus for a mobile terminal utilizing extended synchronization information for doing multi-component carrier cell search are described. Also, methods for multi-component carrier measurements and methods of reporting such measurements to a network are described.
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Citations
31 Claims
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1. A method of searching for a cell having a multi-component carrier in a radio communication system, comprising:
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receiving a signal transmitted by the cell on a carrier frequency having a first predetermined frequency; determining a first cell identity (ID) based on the received signal according to a cell search procedure carried out on received signals at the first predetermined frequency; reading extended synchronization information about multi-component carriers that is broadcast by the cell on the first predetermined frequency, wherein the extended synchronization information includes a second cell ID associated with a second predetermined carrier frequency; and based on the extended synchronization information, carrying out a cell search procedure on received signals at the second predetermined carrier frequency in order to determine the cell having the second cell ID. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An apparatus in a receiver for searching for a cell having a multi-component carrier in a radio communication system, comprising:
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a device for receiving a signal transmitted by the cell on a carrier frequency having a first predetermined frequency; and an electronic processing device configured to determine a first cell identity (ID) based on the received signal according to a cell search procedure carried out on received signals at the first predetermined frequency; wherein the electronic processing device is further configured to read extended synchronization information about multi-component carriers that is broadcast by the cell on the first predetermined frequency;
the extended synchronization information includes a second cell ID associated with a second predetermined carrier frequency; and
based on the extended synchronization information, the electronic processing device is further configured to carry out a cell search procedure on received signals at the second predetermined carrier frequency in order to determine the cell having the second cell ID. - View Dependent Claims (16, 17, 18, 19, 20)
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21. A method of enabling searching for a cell having a multi-component carrier in a radio communication system, comprising:
generating a signal to be transmitted by the cell on a carrier frequency having a first predetermined frequency, wherein the signal includes a first cell identity (ID) and extended synchronization information about multi-component carriers; and
the extended synchronization information includes a second cell ID associated with a second predetermined carrier frequency.- View Dependent Claims (22, 23, 24, 25)
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26. An apparatus for a transmitter of a cell having a multi-component carrier in a radio communication system, comprising:
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at least first and second synchronization signal generators; and a control unit configured to provide and receive control and other signals to and from the at least first and second sync signal generators; wherein the first and second generators include respective first and second cell identification (ID) information in extended information included in first and second synchronization signals produced by the at least first and second generators; and
the first and second cell ID information correspond to respective component carriers of the multi-component carrier. - View Dependent Claims (27, 28, 29, 30, 31)
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Specification