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Apparatus, method and computer program providing enhanced fractional dedicated physical channel downlink power control during soft handover

A downlink and power control command technology, applied in the field of packet data transmission technology, can solve the problems of detectable cell power increase and undetectable cell

Active Publication Date: 2008-05-21
NOKIA TECHNOLOGLES OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it may result in too much power for transmitting F-DPCH
In a larger active set, typically some cells are undetectable, and meeting the quality criteria for the undetectable cell or cells will in vain cause an increase in the power of detectable cells

Method used

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  • Apparatus, method and computer program providing enhanced fractional dedicated physical channel downlink power control during soft handover
  • Apparatus, method and computer program providing enhanced fractional dedicated physical channel downlink power control during soft handover

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Embodiment Construction

[0050] Referring to FIG. 1 , there is illustrated a simplified block diagram showing the main elements for implementing the invention, specifically an HSDPA terminal 10 (which is also referred to as User Equipment (UE) 10), a first (currently serving) BTS (BTS1 ) and the second (target) BTS (BTS2).

[0051] As used herein, but not as a limitation in implementing the invention, it is assumed that each BTS is functionally equivalent to the 3GPP25 series specification term Node B. In addition, whether the handover is inter-cell or intra-cell has nothing to do with the present invention. Generally, it is assumed that a handover refers to a cell change of the HSDPA terminal 10 .

[0052] As shown in FIG. 1, an HSDPA terminal 10 includes a suitable wireless transceiver 12 coupled to a data processor (DP) 14 which in turn includes or is coupled to volatile and / or nonvolatile memory 16. DP 14 may be an integrated circuit operating on a computer chip. Memory 16 stores program code ...

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Abstract

A method includes establishing a first radio link with a serving network entity and a second radio link with a target network entity, commencing a soft handover from the serving network entity to the target network entity, receiving a quality target from a network comprising the serving and target network entities, and applying the quality target only to the first radio link to generate a power control command.

Description

technical field [0001] Exemplary embodiments of the present invention relate generally to digital cellular communication systems, methods, terminals and computer programs, and more particularly to packet data transmission techniques for handing over a terminal from a current serving cell to a next serving cell. Background technique [0002] The following abbreviations are defined below, at least some of which will appear below: [0003] 3GPP: Third Generation Partnership Project [0004] ARQ: Automatic Repeat Request [0005] BTS: base transceiver station [0006] CFN: Connection Frame Number [0007] CPICH: Common Pilot Channel [0008] DL: downlink [0009] DPCH: dedicated physical channel [0010] F-DPCH: Partial Dedicated Physical Channel [0011] H-ARQ: Hybrid Automatic Repeat Request [0012] HSDPA: High Speed ​​Downlink Packet Access [0013] HS-DPCCH: High Speed ​​Dedicated Physical Control Channel [0014] HS-DSCH: High Speed ​​Downlink Shared Channel [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/005H04Q7/38H04W36/18H04W52/12H04W52/40
CPCH04W52/241H04W52/40H04W36/18H04W52/20H04W52/286H04W52/12H04W52/143H04W52/26
Inventor J·凯科南S·尼尔桑A·格罗夫伦
Owner NOKIA TECHNOLOGLES OY
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