Downlink hybrid automatic retransmission method, system and apparatus

A hybrid automatic retransmission and retransmission technology, applied in the field of communications, can solve the problems of data not being released in time, affecting RS capacity and performance, and data subframes being unable to be released, so as to avoid the inability to release cache resources in time, improve RS and RS The effect of capacity and performance

Inactive Publication Date: 2009-03-11
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0028] It can be seen that in the existing downlink hybrid automatic retransmission method, when the RS receives the data correctly and caches the data, no matter whether the MS receives it correctly or receives it incorrectly, there is no mechanism to notify the RS, that is, for both cases 3 and 4, it will As a result, the data subframes cached in the RS cannot be released, and the data cached in the RS cannot be released in time, which directly affects the capacity and performance of the RS.

Method used

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  • Downlink hybrid automatic retransmission method, system and apparatus
  • Downlink hybrid automatic retransmission method, system and apparatus
  • Downlink hybrid automatic retransmission method, system and apparatus

Examples

Experimental program
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Embodiment 1

[0053] In the method for realizing downlink hybrid automatic retransmission in this embodiment, the RS monitors the uplink response returned by the MS to the BS.

[0054] image 3 It is a flowchart of a downlink hybrid automatic retransmission method in Embodiment 1 of the present invention. like image 3 As shown, the method includes the following steps:

[0055] Step 300: The BS allocates uplink and downlink resources for the RS, and instructs the RS to monitor the data subframe sent by the BS to the MS; the RS monitors the uplink response returned by the MS to the BS by default.

[0056] In this step, the BS allocates downlink resources to the RS in the DL-MAP, and sends the DL-MAPMONITOR IE to notify the RS to monitor the data subframes of certain connections of the UE, and uses the CID in the DL-MAPMONITOR IE to indicate which connections the RS monitors The data. At the same time, an uplink resource UL ack channel is allocated to the RS in the UL-MAP of the frame, an...

Embodiment 2

[0080] In the method for realizing downlink hybrid automatic retransmission in this embodiment, the BS notifies the RS of the ack response information from the MS.

[0081] Figure 4 It is a flowchart of a downlink hybrid automatic retransmission method in Embodiment 2 of the present invention. like image 3 As shown, the method includes the following steps:

[0082] Step 400: The BS allocates uplink and downlink resources for the RS, and instructs the RS to monitor the data subframe sent by the BS to the MS.

[0083] Steps 401 to 410 are the same as those described in Steps 301 to 310 in Embodiment 1, and will not be repeated here.

[0084] Step 411: The BS determines that the RS is received correctly and the MS receives incorrectly according to the received ack of the RS and the nack of the MS, and the BS determines that the data is retransmitted by the RS.

[0085] Steps 412 to 414 are the same as steps 313 to 315 and will not be described in detail here.

[0086] Step...

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Abstract

The invention discloses a method of down mixing self-retransmission, which comprises: a relay station (RS) and a mobile station (MS) respectively receive down data subframes which are sent to the MS by a base station (BS), and respectively return respective response showing the right receiving or response showing the wrong receiving to the BS; if the RS right receives the down data subframes, the RS buffers the down data subframes; if the up response of the BS returned by the MS is the response showing the right receiving, the RS releases the down data subframes buffered by the RS. The invention also discloses a system of down mixing self-retransmission and a RS. After the RS and the MS right receive the down data subframes sent by the MS by using the invention, the RS can fast and accurately release the data subframes buffered by the RS, and the capacity and the performance of the RS are improved.

Description

technical field [0001] The present invention relates to communication technology, in particular to a downlink hybrid automatic retransmission method, system and device. Background technique [0002] In a traditional cellular network, the wireless connection between a base station (BS, Base Station) and a mobile station (MS, MobileStation) is a direct wireless connection, that is, the concept of "single hop" is adopted. However, in the planning stage of base station coverage, it is usually difficult to avoid terrain and ground objects that may cause shadow fading effects in some areas of the signal. Therefore, it is necessary to use a relay system to improve signal coverage. A relay station (RS, Relay Station) first receives a signal sent from a base station / user terminal, and then forwards the signal to the user terminal / base station. Appropriate placement of RS can improve signal coverage, and at the same time, signal regeneration can be achieved when relaying and retransm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04L1/16
Inventor 杨霞陈斌高一明
Owner HUAWEI TECH CO LTD
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