Controlling carrier selection in a wireless communication system
First Claim
1. A terminal device for use in a mobile communications system comprising an arrangement of at least one base station configured to communicate data to and/or from different types of terminal devices via respective ones of a plurality of logically separate carriers of a wireless access interface, the terminal device comprising:
- circuitry configured to;
receive a physical layer synchronization signal that is associated with a carrier of the plurality of logically separate carriers;
synchronize with the carrier based on the physical layer synchronization signal;
acquire a master information block (MIB) on the carrier, wherein the MIB does not include an indication related to whether the terminal device is barred from accessing the carrier;
determine whether the terminal device is barred from accessing the carrier based on whether the terminal device successfully acquires or fails to acquire a system information block (SIB) on the carrier with which the terminal device has synchronized; and
when the terminal device successfully acquires the SIB, determine whether the terminal device is barred from accessing the carrier based on whether the SIB includes a flag indicating that the terminal device is barred from accessing the carrier,wherein the flag is located in a sub-frame that includes both legacy-specific signaling for legacy terminal devices and non-legacy signaling for non-legacy terminal devices, and wherein the flag is configured to terminate a camp-on procedure by legacy terminal devices and is configured to be ignored by non-legacy terminal devices.
4 Assignments
0 Petitions
Accused Products
Abstract
A mobile communications system including at least one base station configured to communicate data to/from different types of terminal devices via respective of plural logically separate carriers of a wireless access interface; first and second terminal devices operable to respectively camp-on to first and second carriers of the carriers and to subsequently communicate data with the at least one base station via the first and second carriers. The first and second carriers support compatible synchronization signalling such that the first and second terminal devices synchronize with the first and second carriers to begin a camp-on procedure, and following synchronization with one of the first or second carriers to begin a camp-on procedure. The second terminal device is configured to determine whether or not to continue with the camp-on procedure based on an aspect of physical layer signalling associated with a control channel of the carrier with which it has synchronized.
11 Citations
19 Claims
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1. A terminal device for use in a mobile communications system comprising an arrangement of at least one base station configured to communicate data to and/or from different types of terminal devices via respective ones of a plurality of logically separate carriers of a wireless access interface, the terminal device comprising:
circuitry configured to; receive a physical layer synchronization signal that is associated with a carrier of the plurality of logically separate carriers; synchronize with the carrier based on the physical layer synchronization signal; acquire a master information block (MIB) on the carrier, wherein the MIB does not include an indication related to whether the terminal device is barred from accessing the carrier; determine whether the terminal device is barred from accessing the carrier based on whether the terminal device successfully acquires or fails to acquire a system information block (SIB) on the carrier with which the terminal device has synchronized; and when the terminal device successfully acquires the SIB, determine whether the terminal device is barred from accessing the carrier based on whether the SIB includes a flag indicating that the terminal device is barred from accessing the carrier, wherein the flag is located in a sub-frame that includes both legacy-specific signaling for legacy terminal devices and non-legacy signaling for non-legacy terminal devices, and wherein the flag is configured to terminate a camp-on procedure by legacy terminal devices and is configured to be ignored by non-legacy terminal devices. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for assisting carrier selection performed by a terminal device in a mobile communications system comprising an arrangement of at least one base station configured to communicate data to and/or from different types of terminal devices via respective ones of a plurality of logically separate carriers of a wireless access interface, the method comprising:
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receiving a physical layer synchronization signal that is associated with a carrier of the plurality of logically separate carriers; synchronizing with the carrier based on the physical layer synchronization signal; acquiring a master information block (MIB) on the carrier, wherein the MIB does not include an indication related to whether the terminal device is barred from accessing the carrier; determining whether the terminal device is barred from accessing the carrier based on whether the terminal device successfully acquires or fails to acquire a system information block (SIB) on the carrier with which the terminal device has synchronized; and when the terminal device successfully acquires the SIB, determining whether the terminal device is barred from accessing the carrier based on whether the SIB includes a flag indicating that the terminal device is barred from accessing the carrier, wherein the flag is located in a sub-frame that includes both legacy-specific signaling for legacy terminal devices and non-legacy signaling for non-legacy terminal devices, and wherein the flag is configured to terminate a camp-on procedure by legacy terminal devices and is configured to be ignored by non-legacy terminal devices. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A mobile communications system comprising:
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an arrangement of at least one base station configured to communicate data to and/or from different types of terminal devices via respective ones of a plurality of logically separate carriers of a wireless access interface; a first terminal device configured to camp on a first carrier of the plurality of carriers and to subsequently communicate data with the arrangement of at least one base station via the first carrier; and a second terminal device configured to camp on a second carrier of the plurality of carriers and to subsequently communicate data with the arrangement of at least one base station via the second carrier, wherein the first and second carriers support compatible synchronization signalling such that the first and second terminal devices are synchronizable with the first and second carriers, wherein the first and second carriers support incompatible physical layer signalling associated with control channels of their respective camp-on procedures such that the first terminal device is barred from accessing the second carrier, and wherein the first terminal device is further configured to; receive a physical layer synchronization signal that is associated with the second carrier; acquire a master information block (MIB) on the second carrier, wherein the MIB does not include an indication related to whether the first terminal device is barred from accessing the second carrier; synchronize with the second carrier based on the physical layer synchronization signal; determine whether the first terminal device is barred from accessing the second carrier based on whether the first terminal device successfully acquires or fails to acquire a system information block (SIB) on the second carrier with which the first terminal device has synchronized; and when the first terminal device successfully acquires the SIB, determine whether the first terminal device is barred from accessing the second carrier based on whether the SIB includes a flag indicating that the first terminal device is barred from accessing the second carrier, wherein the flag is located in a sub-frame that includes both legacy-specific signaling for legacy terminal devices and non-legacy signaling for non-legacy terminal devices, and wherein the flag is configured to terminate a camp-on procedure by legacy terminal devices and is configured to be ignored by non-legacy terminal devices.
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Specification