Abstract
A wireless communication system and method employing channel transport format allocation in a shared uplink channel between a UE and a Node B and wherein the UE can determine a transport format combination which it can support by: detecting in the UE a change in transport format combination that the UE can support; and sending to the Node B an indication of transport format combination that the UE can support whereby efficiency of channel transport format allocation in the system may be improved. A conditional delay mechanism may be employed to reduce signalling overhead. This allows uplink shared channels to be efficiently used by providing a means by which UTRAN (UMTS terrestrial radio access network) is informed of the TFCs within the TFCS which can be used in the uplink by the UE.
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Specification Information
Specification Information
Technologies
Family Information
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Technologies
Resource configuration
Product
Use Cases
Wireless communication
Services
Claim
1. A method for a wireless communication system using transport format combinations (TFC) for allocating bandwidth of a shared channel among a plurality of radio units in the system, the method comprising:
receiving, at a radio unit, a transport format combination set (TFCS) including a transport format combination (TFC) allocated for use by the radio unit for data transmission;
detecting in the radio unit that the radio unit can support a TFC within the TFCS different from the allocated TFC; and
sending, responsive to detecting, to the base station an indication of the transport format combination in the TFCS that the radio unit can support.', 'receiving, at a radio unit, a transport format combination set (TFCS) including a transport format combination (TFC) allocated for use by the radio unit for data transmission;', 'detecting in the radio unit that the radio unit can support a TFC within the TFCS different from the allocated TFC; and', 'sending, responsive to detecting, to the base station an indication of the transport format combination in the TFCS that the radio unit can support.
2. The method as claimed in claim 1, further comprising, conditionally delaying sending the indication, until the detected change in transport format combination that the radio unit can support has lasted for more than a predetermined period of time.
3. The method as claimed in claim 1, wherein the allocated TFC refects an allocation of an uplink shared channel among the plurality of radio units in the system.
4. The mothod as claimed in claim 1, wherein the radio unit is part of a UMTS system.
5. The method as claimed in claim 4, wherein the step of detecting comprises:
indicating from physical interface circuitry to medium access control circuitry a change in transport format combination that he radio unit can support.', 'indicating from physical interface circuitry to medium access control circuitry a change in transport format combination that he radio unit can support.
6. The method as claimed in claim 5, wherein the step of indicating comprises providing, to the base station, calculated transport format combinations that the radio unit cab support.
7. A wireless unit for data transmission on an unlink channel shared with other wireless units, the uplink channel shared by allocating a transport format combination (TFC) to the wireless unit from a basestation, the wireless unit comprising:
physical interface circuitry configured to detect Transport Format Combinations (TFCs) that the wireless unit can use; and
media access control circuitry configured to receive, from the physical interface circuitry, an indication of the TFCs that the wireless unit can use, and to select, for uplink transmission, a TFC from the TFCs that the wireless unit can use, and wherein the media access control circuitry is also configured to provide an indication to the basestation if the selected TFC is not the allocated TFC from the basestation.', 'physical interface circuitry configured to detect Transport Format Combinations (TFCs) that the wireless unit can use; and', 'media access control circuitry configured to receive, from the physical interface circuitry, an indication of the TFCs that the wireless unit can use, and to select, for uplink transmission, a TFC from the TFCs that the wireless unit can use, and wherein the media access control circuitry is also configured to provide an indication to the basestation if the selected TFC is not the allocated TFC from the basestation.
8. The wireless unit of claim 7, further comprising a timer configured to prevent transmission of the indication to the basestation unless the detected change has continued for at feast a predetermined period of time.
9. The wireless unit of claim 7, wherein the wireless unit is configured to operate in a UMTS system
10. The wireless unit of claim 7, wherein the physical interface circuitry is configured to provide calculated TFCs as the indication provided to the media access controller circuitry
11. A computer readable medium comprising program code for a method of allocating bandwidth of a shared wireless medium, the method comprising:
receiving, in a radio unit and from a controller, a transport format combination representative of an allocation of a shared uplink channel;
detecting, in the radio unit, a change in Transport Format Combinations (TFC) that the radio unit can use for an uplink transmission; and
indicating the TFC change to the controller so that the controller can use the indication for reallocating the shared unlink channel.', 'receiving, in a radio unit and from a controller, a transport format combination representative of an allocation of a shared uplink channel;', 'detecting, in the radio unit, a change in Transport Format Combinations (TFC) that the radio unit can use for an uplink transmission; and', 'indicating the TFC change to the controller so that the controller can use the indication for reallocating the shared unlink channel
12. A computer readable medium comprising program code for a method to be implemented in a controller for a wireless communications network that provides for uplink transmissions from a plurality of wireless units on a shared channel, the method comprising:
formulating a first set of transport format combinations (a TFCS), for transmission to a wireless unit of the plurality, the first TFCS reflecting an allocation of the shared channel among the plurality of wireless units, and including an initially allocated TFC for unlink transmission by the wireless unit;
transmitting the first TFCS to the wireless unit;
receiving an indication from the wireless unit that a calculated set of TFCs that the wireless unit can use for an uplink transmission differs from the initially allocated TFC in the first TFCS; and
modifying the allocation of the shared channel among the wireless units in response to the indication.', 'formulating a first set of transport format combinations (a TFCS), for transmission to a wireless unit of the plurality, the first TFCS reflecting an allocation of the shared channel among the plurality of wireless units, and including an initially allocated TFC for unlink transmission by the wireless unit;', 'transmitting the first TFCS to the wireless unit;', 'receiving an indication from the wireless unit that a calculated set of TFCs that the wireless unit can use for an uplink transmission differs from the initially allocated TFC in the first TFCS; and', 'modifying the allocation of the shared channel among the wireless units in response to the indication
13. The computer readable medium of claim 12, the stored method further comprising:
determining, based on the indication, that the initially allocated TFC provides a bandwidth higher than what the wireless unit can presently use; and
further comprising reallocating, to other wireless units of the plurality, a difference in bandwidth reflected by the highest bandwidth TFC in the calculated set of TFC and the initially allocated TFC in the first TFCS.', 'determining, based on the indication, that the initially allocated TFC provides a bandwidth higher than what the wireless unit can presently use; and', 'further comprising reallocating, to other wireless units of the plurality, a difference in bandwidth reflected by the highest bandwidth TFC in the calculated set of TFC and the initially allocated TFC in the first TFCS
14. The computer readable medium of claim 12, the stored method further comprising:
determining, based on the indication, that the wireless unit can use a higher bandwidth TFC in the first TFCS than the initially allocated TFC; and
allocating the higher bandwidth TFC to the wireless unit.', 'determining, based on the indication, that the wireless unit can use a higher bandwidth TFC in the first TFCS than the initially allocated TFC; and', 'allocating the higher bandwidth TFC to the wireless unit.']
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Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.