Mobile radio device synchronization
First Claim
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1. A method for synchronizing a plurality of mobile radio devices, comprising:
- transmitting a downlink synchronization signal in a shared downlink synchronization channel a plurality of mobile radio devices, wherein the downlink synchronization signal is common to the plurality of mobile radio devices; and
receiving a plurality of uplink synchronization signals via a plurality of dedicated uplink synchronization channels, wherein each uplink synchronization signal indicates that a respective mobile radio device has synchronized to the shared downlink synchronization channel;
wherein the method is carried out during a handover procedure from a first mobile radio communication system to a second mobile radio communication system;
wherein the downlink synchronization signal is received by the plurality of mobile radio devices; and
wherein each mobile radio device of the plurality of mobile radio devices transmits a respective uplink synchronization signal via a respective dedicated uplink synchronization channel of the plurality of dedicated uplink synchronization channels; and
wherein the first mobile radio communication system is a Global Systems for Mobile Communications mobile radio communication system or a Universal Mobile Telecommunications System and wherein the second mobile radio communication system is a Universal Mobile Telecommunications System Long Term Evolution mobile radio communication system;
orwherein the first mobile radio communication system is a Universal Mobile Telecommunications System Long Term Evolution mobile radio communication system and wherein the second mobile radio communication system is a Global Systems for Mobile Communications mobile radio communication system or a Universal Mobile Telecommunications System.
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Abstract
Method for synchronizing a plurality of mobile radio devices, mobile radio devices and a method for synchronizing a mobile radio device. In one embodiment of the invention, a method for synchronizing a plurality of mobile radio devices is provided including transmitting a downlink synchronization signal in a shared downlink synchronization channel to a plurality of mobile radio devices, and receiving a plurality of uplink synchronization signals via a plurality of dedicated uplink synchronization channels.
11 Citations
35 Claims
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1. A method for synchronizing a plurality of mobile radio devices, comprising:
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transmitting a downlink synchronization signal in a shared downlink synchronization channel a plurality of mobile radio devices, wherein the downlink synchronization signal is common to the plurality of mobile radio devices; and receiving a plurality of uplink synchronization signals via a plurality of dedicated uplink synchronization channels, wherein each uplink synchronization signal indicates that a respective mobile radio device has synchronized to the shared downlink synchronization channel; wherein the method is carried out during a handover procedure from a first mobile radio communication system to a second mobile radio communication system; wherein the downlink synchronization signal is received by the plurality of mobile radio devices; and
wherein each mobile radio device of the plurality of mobile radio devices transmits a respective uplink synchronization signal via a respective dedicated uplink synchronization channel of the plurality of dedicated uplink synchronization channels; andwherein the first mobile radio communication system is a Global Systems for Mobile Communications mobile radio communication system or a Universal Mobile Telecommunications System and wherein the second mobile radio communication system is a Universal Mobile Telecommunications System Long Term Evolution mobile radio communication system;
orwherein the first mobile radio communication system is a Universal Mobile Telecommunications System Long Term Evolution mobile radio communication system and wherein the second mobile radio communication system is a Global Systems for Mobile Communications mobile radio communication system or a Universal Mobile Telecommunications System. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A mobile radio device, comprising:
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a transmitter configured to transmit a downlink synchronization signal in a shared downlink synchronization channel to a plurality of mobile radio devices during a handover procedure from a first mobile radio communication system to a second mobile radio communication system, wherein the downlink synchronization signal is common to the plurality of mobile radio devices, wherein the downlink synchronization signal is received by the plurality of mobile radio devices; and a receiver configured to receive a plurality of uplink synchronization signals via a plurality of dedicated uplink synchronization channels during the handover procedure, wherein each uplink synchronization signal indicates that a respective mobile radio device has synchronized to the shared downlink synchronization channel, each uplink synchronization signal transmitted by the respective mobile radio device via a respective dedicated uplink synchronization channel of the plurality of dedicated uplink synchronization channels; and wherein the first mobile radio communication system is a Global Systems for Mobile Communications mobile radio communication system or a Universal Mobile Telecommunications System and wherein the second mobile radio communication system is a Universal Mobile Telecommunications System Long Term Evolution mobile radio communication system;
orwherein the first mobile radio communication system is a Universal Mobile Telecommunications System Long Term Evolution mobile radio communication system and wherein the second mobile radio communication system is a Global Systems for Mobile Communications mobile radio communication system or a Universal Mobile Telecommunications System. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A mobile radio device, comprising:
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a receiver configured to receive a downlink synchronization signal in a shared downlink synchronization channel shared by a plurality of mobile radio devices during a handover procedure from a first mobile radio communication system to a second mobile radio communication system, wherein the downlink synchronization signal is common to the plurality of mobile radio devices, wherein the downlink synchronization signal is received by the plurality of mobile radio devices; and a transmitter configured to transmit an uplink synchronization signal via a dedicated uplink synchronization channel during the handover procedure, wherein each uplink synchronization signal indicates that a respective mobile radio device has synchronized to the shared downlink synchronization channel, each uplink synchronization signal transmitted by the respective mobile radio device via a respective dedicated unlink synchronization channel of the plurality of dedicated uplink synchronization channels; and wherein the first mobile radio communication system is a Global Systems for Mobile Communications mobile radio communication system or a Universal Mobile Telecommunications System and wherein the second mobile radio communication system is a Universal Mobile Telecommunications System Long Term Evolution mobile radio communication system;
orwherein the first mobile radio communication system is a Universal Mobile Telecommunications System Long Term Evolution mobile radio communication system and wherein the second mobile radio communication system is a Global Systems for Mobile Communications mobile radio communication system or a Universal Mobile Telecommunications System. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. A method for synchronizing a mobile radio device, comprising:
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transmitting a downlink synchronization signal in a shared downlink synchronization channel to a mobile radio device, wherein the downlink synchronization signal is common to the plurality of mobile radio devices; and receiving an uplink synchronization signal via a dedicated uplink synchronization channel, wherein each uplink synchronization signal indicates that a respective mobile radio device has synchronized to the shared downlink synchronization channel; wherein the method is carried out during a handover procedure from a first mobile radio communication system to a second mobile radio communication system; wherein the downlink synchronization signal is received by the plurality of mobile radio devices; and
wherein each mobile radio device of the plurality of mobile radio devices transmits a respective uplink synchronization signal via a respective dedicated uplink synchronization channel of the plurality of dedicated uplink synchronization channels;and wherein the first mobile radio communication system is a Global Systems for Mobile Communications mobile radio communication system or a Universal Mobile Telecommunications System and wherein the second mobile radio communication system is a Universal Mobile Telecommunications System Long Term Evolution mobile radio communication system;
orwherein the first mobile radio communication system is a Universal Mobile Telecommunications System Long Term Evolution mobile radio communication system and wherein the second mobile radio communication system is a Global Systems for Mobile Communication mobile communication system or a Universal Mobile Telecommunications System.
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Specification