Permanent dedicated random access preambles for femtocell
AssigneeIntel Mobile Communications GmbH
InventorsMaik Bienas, Hyung-Nam Choi
Life of this patent
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Abstract
Methods and apparatuses for allocating permanent dedicated preambles for connection with a femtocell. Various embodiments include selecting one or more mobile communication devices to be a main device, assigning the permanent dedicated preambles to each of the one or more main devices, transmitting the assigned permanent dedicated preambles to the one or more main devices, storing a relation of the assigned permanent dedicated preambles in a memory of the one or more main devices, and explicitly releasing one or more of the assigned permanent dedicated preambles when a release condition is met.
Claims25
A method of allocating dedicated preambles for connection with a femtocell, the method comprising:
- selecting one or more mobile communication devices to be a main device;
- assigning the dedicated preambles for each of the one or more main devices to be permanently used across a plurality of random access procedures to form assigned permanent dedicated preambles, wherein each random access procedure comprises a discrete message flow using said assigned permanent dedicated preambles between one of said main devices and the femtocell;
- transmitting the assigned permanent dedicated preambles to the one or more main devices;
- storing a relation of the assigned permanent dedicated preambles in a memory of the one or more main devices;
- and
- explicitly releasing one or more of the assigned permanent dedicated preambles when a release condition is met.
A mobile communication device comprising:
- a transceiver;
- a memory;
- and
- a processor configured to cause the mobile communication device to:
- receive an assigned dedicated preamble to be permanently used across a plurality of random access procedures to form an assigned permanent dedicated preamble, wherein each random access procedure comprises a discrete message flow using said assigned permanent dedicated preamble between the mobile communication device and a femtocell, and wherein the assigned permanent dedicated preamble is configured to provide a non-contention based random access procedure with the femtocell;
- store a relation of the assigned permanent dedicated preamble in the memory;
- and
- explicitly release the assigned permanent dedicated preamble when a release condition is met.
A base station comprising:
- a transceiver
- a memory;
- and
- a processor configured to cause the base station to:
- transmit a dedicated preamble to one or more main devices to be permanently used across a plurality of random access procedures to form assigned permanent dedicated preambles, wherein each random access procedure comprises a discrete message flow using said assigned permanent dedicated preambles between one of said main devices and the base station;
- and
- explicitly release one or more of the assigned permanent dedicated preambles when a release condition is met.
A wireless communication network comprising:
- a plurality of mobile communication devices, wherein at least one of the mobile communication devices is a main device, the main device configured to store a relation of a dedicated preamble to be permanently used across a plurality of random access procedures to form a permanent dedicated preamble, wherein each random access procedure comprises a discrete message flow using said assigned permanent dedicated preambles between the main device and a base station;
- the base station configured to:
- transmit the permanent dedicated preamble to the main device;
- and
- explicitly release one or more of the permanent dedicated preambles when a release condition is met.
Dependencies are inferred from the claim text.