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Retransmission Process Control Method

a technology of retransmission process and control method, applied in the direction of error prevention, digital transmission, wireless commuication services, etc., can solve the problems of spectral inefficiency for high allocated data rate and long release timer value, proposal has certain problems, and the inability to adapt to instantaneous traffi

Inactive Publication Date: 2009-06-04
NOKIA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

Enables fast activation of HARQ processes, improving network flexibility and reducing signalling errors by allowing Node B to control HARQ processing directly, thus enhancing spectral efficiency and accommodating instantaneous traffic variability.

Problems solved by technology

In the currently specified architecture, the packet scheduler is located in the RNC and therefore is limited in its ability to adapt to the instantaneous traffic, because of bandwidth and delay constraints on the RRC signalling interface between the RNC and the UE.
Hence, to accommodate the variability, the packet scheduler must be conservative in allocating uplink power to take into account the influence from inactive users in the following scheduling period—a solution which turns out to be spectrally inefficient for high allocated data rates and long release timer values.
These proposals have certain problems.
For example, scheduling each HARQ process independently requires a lot of signalling and can be considered more susceptible to signalling errors.
However, layer 3 signalling is too slow to allow a fast activation.

Method used

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  • Retransmission Process Control Method
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  • Retransmission Process Control Method

Examples

Experimental program
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Embodiment Construction

[0049]FIG. 2 illustrates a mobile station 20 and a network node 100 of a wireless communication system 110 according to an embodiment of the invention.

[0050]The mobile station has a user interface 210 which can be for example a display and a keyboard, a processor 220, a receiver 230 for receiving a transmission resource control channel, means 240 for receiving retransmission process control information from the transmission resource control channel, and a controller 250 for activating and deactivating retransmission processes as a response to retransmission process control information received by the means for receiving control information. Various components can be implemented using software program code executed in the processor 220 of the mobile station. For example, the means 240 for receiving retransmission process control information can be implemented as software program code which is adapted to extract retransmission process control information from an incoming data flow of ...

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Abstract

This invention relates to signalling of control information related to retransmissions in a wireless communication network. According to one aspect of the invention, a method for controlling transmission over a wireless communication link is provided. The method comprises the step of indicating on a transmission resource control channel whether a HARQ retransmission process in a mobile station should be activated or deactivated.

Description

FIELD OF INVENTION[0001]This invention relates to signalling of control information related to retransmissions in a wireless communication network.LIST OF ACRONYMS[0002]AG Absolute Grant[0003]CDMA code division multiple access[0004]DL downlink[0005]E-AGCH EDCH Absolute Grant Channel[0006]EDCH Enhanced Uplink DCH[0007]E-RGCH EDCH Relative Grant Channel[0008]HARQ Hybrid Automatic Repeat reQuest[0009]HSUPA High Speed Uplink Packet Access[0010]Node B Base station[0011]RG Relative Grant[0012]RLC Radio Link Control[0013]RNC Radio Network Controller[0014]RR Rate Request[0015]RRC Radio Resource Control[0016]TFC Transport Format Combination[0017]TTI Transmission Time Interval[0018]UE User Equipment, a mobile station[0019]UL uplinkTECHNOLOGICAL BACKGROUND[0020]A communication system is a facility that enables communication between two or more entities such as user terminal equipment and / or network entities and other nodes associated with a communication system. The communication may comprise,...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H04W4/00H04L1/18H04W28/04
CPCH04W28/04H04L1/1812H04L1/08
Inventor SEBIRE, BENOISTRANTA-AHO, KARRI
Owner NOKIA CORP