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Method and apparatus for sharing uplink state flag (USF) with multiple uplink temporary block flows (TBFs)
| Details |
Inventors: Lintulampi, Raino; Parantainen, Janne; Sebire, Guillaume;
Assignee: Nokia Corporation (Espoo, FI)
Primary Examiner: Pham; Chi
Assistant Examiner: Do; Nhat
Attorney, Agent or Firm: Harrington & Smith, LLP
A method and an apparatus are described for increasing the flexibility of uplink resource allocation for a mobile station (MS) (100), that is backwards compatible with earlier standards that provide only a single data flow per MS. The method includes steps of (A) associating an allocated uplink resource (an Uplink State Flag (USF)) with one or more Temporary Block Flows (TBFs) for a Packet Data Channel (PDCH), and not with a MS per se (although a given USF is associated with only a single MS); and (B) using a Temporary Flow Identity (TFI) for identifying a TBF, where a TFI may be unique to a PDCH and, if not, is unique with respect to the MS on a PDCH (and hence with respect to the USF). The result is that the MS is enabled to send any of its TBFs on allocated resources of the same PDCH. An uplink resource may be allocated to the MS dynamically using the Uplink State Flag (USF) or by using a fixed allocation. A total of n Radio Bearers are associated with a single TBF, where n.gtoreq.1. |
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DETAILED DESCRIPTION The foregoing and other problems are overcome and the objects of the invention are realized by methods and apparatus in accordance with embodiments of this invention.
A method and an apparatus are described for increasing the flexibility of uplink resource allocation for a mobile station (MS), that is backwards compatible with earlier standards that provide only a single data flow per MS.
The method includes steps of (A) associating an allocated uplink resource (an Uplink State Flag (USF)) with one or more Temporary Block Flows (TBFs) for a Packet Data Channel (PDCH), and not with a MS per se (although a given USF is associated with only a single MS); and (B) using a Temporary Flow Identity (TFI) for identifying a TBF, where a TFI may be unique to a PDCH and hence across MSs on a PDCH and, if not, is unique with respect to the MS on a PDCH (implying unity with respect to the USF) and hence may be repeated across MSs on a PDCH.
The result is that the MS is enabled to send any of its TBFs that are allocated to that PDCH on allocated resources.
TFI may also be unique with respect to the USF but not necessarily with the MS (implying that there may be more than 32 TFIs/MS on a PDCH.
) In this case TFIs may be repeated across USFs of one MS on a PDCH, and the MS is enabled to send any of its flows that are assigned to that USF on the allocated resource.
An uplink resource may be allocated to the MS dynamically using the Uplink State Flag (USF) or by using a fixed allocation.
In one case only those TBFs that have been assigned to a USF can be sent on that resource.
In another case, where TFIs are unique for the MS on the PDCH, another TBF that has been assigned to a different USF of the same MS on the same PDCH can be sent on that resource.
This would typically be done if, for example, there is no data to transmit on TBFs that have been assigned to the USF.
A total of n Radio Bearers are associated with a single TBF, where n.
gtoreq.
1.
Note that a purpose of this invention is not necessarily to increase the number of mobile stations per PDCH (eight are still supported) but to instead increase the number of flows, as well as to increase the flexibility of uplink resource allocation
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Multiplexer-related 
