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Method for improving forward business mixing automatic re-sending efficiency, base station controller

A technology of hybrid automatic retransmission and base station controller, which is applied in the direction of transmission control/equalization, power management, transmission system, etc., which can solve the problem of inability to demodulate DRC signals, affect the early termination of forward packets, and reduce the transmission of reverse links Power and other issues, to achieve the effect of improving HARQ efficiency, avoiding user service drop, and improving service throughput

Active Publication Date: 2010-06-02
XFUSION DIGITAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the above power control mechanism, base station 1 will ask AT to increase the transmit power of the reverse link because the reverse link is poor, and base station 2 will ask AT to reduce the transmit power because the reverse link is good, according to the above The power control mechanism, AT will eventually reduce the transmit power of the reverse link, that is, the power control mechanism will further reduce the power of the reverse link from AT to base station 1, making the reverse link environment of base station 1 further worse , causing base station 1 to further reduce the demodulation effect of the DRC channel, and even fail to demodulate the DRC signal of the AT, and send a stop (Stop) instruction to the BSC, resulting in the drop of the AT service
In addition, the further deterioration of the wireless environment of the reverse link of base station 1 will further reduce the demodulation effect of base station 1 on the ACK channel, affecting the early termination of forward packets, thereby affecting the forward rate of users and affecting the forward sector business throughput

Method used

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  • Method for improving forward business mixing automatic re-sending efficiency, base station controller
  • Method for improving forward business mixing automatic re-sending efficiency, base station controller
  • Method for improving forward business mixing automatic re-sending efficiency, base station controller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] figure 1 A schematic flowchart of a method for improving the efficiency of forward service hybrid automatic retransmission provided by this embodiment, as shown in the figure, the method may include:

[0026] Step 101: The BSC detects whether the current forward and reverse links are unbalanced, and if so, performs step 102; otherwise, does not adjust the current reverse link state.

[0027] In the communication system, if the forward pilot strength C / I received by the AT is high, it means that the forward link of the AT is very good, and if the AT transmit power (related to the forward effective power C) has been adjusted to the maximum , indicating that the reverse link of the AT is poor. The quality of the reverse link can be represented by the reverse pilot strength Ec / Io received by the BSC. If Ec / Io is very low, it indicates that the reverse link is poor. The BSC can determine whether the forward and reverse links of the AT in the current communication system are...

Embodiment 2

[0080] figure 2 A schematic structural diagram of the BSC provided in this embodiment, as shown in the figure, the BSC includes:

[0081] The detection unit 201 is configured to detect whether the forward and reverse links of the current AT are unbalanced.

[0082] In the communication system, if the forward pilot strength C / I received by the AT is high, it means that the forward link is good, but if the AT transmit power has been adjusted to the maximum, it means that the reverse link is very poor, and the reverse link The quality of the path can be represented by the reverse pilot strength Ec / Io received by the BSC. If Ec / Io is very low, it indicates that the reverse link is poor. By monitoring these two indicators, the BSC can determine whether there is an imbalance between the forward and reverse links in the current communication system.

[0083] The HARQ efficiency determination unit 202 is configured to determine whether the current forward HARQ efficiency is too low...

Embodiment 3

[0088] like image 3 As shown, the basic structure of the BSC in this embodiment is basically the same as that in Embodiment 2. The BSC includes: a detection unit 301, a hybrid automatic repeat efficiency determination unit 302, and an indication unit 303. The difference is that in this embodiment The indicating unit 303 includes:

[0089] The gain determination unit 3031 is configured to determine the gain of the reverse ACK channel when the detection unit 301 detects that the forward and reverse links are unbalanced, and the hybrid automatic repeat efficiency determination unit 302 determines that the current forward HARQ efficiency is too low , and the gain of the reverse DRC channel. For the specific principle, reference may be made to the corresponding description in step 103 in Embodiment 1.

[0090] The sending unit 3032 is configured to deliver the gain of the reverse ACK channel and the gain of the reverse DRC channel determined by the gain determining unit 3031 to ...

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Abstract

The method comprises: when the base station controller detects the front backward link of the access terminal is unbalance and the efficiency of forward hybrid automatic repeat is too low, it indicates the access terminal to increase the transmission power of said backward confirmation channel and the backward data rate control channel; after the access terminal gets the indication from the base station controller, it increase the transmission power of said backward confirmation channel and the backward data rate control channel.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a method and a base station controller for improving the efficiency of forward service hybrid automatic retransmission. Background technique [0002] Due to the complexity of the wireless environment, due to imperfect network planning considerations or the existence of reverse interference sources (such as police walkie-talkie interference, radio station interference, etc.) Or the scenario in which the forward and reverse links are unbalanced during virtual soft handover. [0003] In the process of carrying out the present invention, the inventors of the present invention found that in the above-mentioned situation, the power control mechanism according to the prior art would cause the AT to make inappropriate adjustments to the transmit power, thereby causing the reverse link (including the confirmation ( The transmit power of the AC Knowledge (ACK for short) chann...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W88/12H04W52/14H04L1/18H04B7/005H04L1/00
Inventor 赖国庭刘洪李伟
Owner XFUSION DIGITAL TECH CO LTD
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