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Allocation method for a physical hybrid repeat request AICH and equipment adopting same

A technology of retransmission indication and physical mixing, applied in the field of wireless networks, can solve the problems of unsatisfactory users, waste of resources, and inability to allocate PHICH channels, etc., and achieve the effect of reducing the probability of PHICH channels and improving utilization efficiency

Active Publication Date: 2011-06-29
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the solution in the prior art, when the minimum label index of the physical resource block occupied by the uplink data transmission block is determined, if the identifiable PHICH channel has been allocated for ACK / NACK responses to other uplink data transmission blocks, then according to In the existing technology, even if there are unused PHICH channels in the system, the PHICH channel cannot be allocated for the current uplink data transmission block, and the ACK / NACK response to the uplink data transmission block cannot be made. Waste can not meet the needs of users

Method used

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  • Allocation method for a physical hybrid repeat request AICH and equipment adopting same
  • Allocation method for a physical hybrid repeat request AICH and equipment adopting same
  • Allocation method for a physical hybrid repeat request AICH and equipment adopting same

Examples

Experimental program
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Effect test

example 1

[0087] Such as Figure 5 As shown, when an LTE-A UE adopts a carrier configuration of 1 DL component carrier and 2 UL component carriers, a schematic diagram of the division of PHICH channel subsets; there are 4 groups of PHICH channels in the figure, and these 4 groups of PHICH channels are divided into Two PHICH channel subsets, PHICH channel subset 1 and PHICH channel subset 2, are completely disjoint between the two PHICH channel subsets. The PHICH channel of each PHICH channel subset corresponds to the ACK / NACK response of the uplink data transmission block of an uplink carrier. For the uplink carrier, within the scope of the PHICH channel included in its corresponding subset, use the extended n-DMRS The value of the value and the minimum label index of the resource block occupied by the uplink data transmission block are determined according to the LTE, or the above method 1, or method 2, or method 3, or the PHICH channel calculation method described in the third embodim...

example 2

[0089] Each uplink carrier corresponds to a PHICH channel subset, and the PHICH channel index in the PHICH subset resource is obtained by mapping the even-numbered PRB of the uplink carrier. Specifically, the following formula can be used to illustrate:

[0090] n PHICH group = ( ( I PRB _ RA lowest _ index + ( I PRB _ RA lowest _ index mod 2 ) ) / 2 + ...

example 3

[0100] When a downlink carrier provides PHICH channels for multiple uplink carriers, for the paired uplink carriers associated with the downlink carrier, its corresponding PHICH channel subset includes all PHICH channels on the downlink carrier;

[0101] For an unpaired uplink carrier, the PHICH channel subset determined for all uplink data transmission blocks in the unpaired uplink carrier includes all PHICH channels on the downlink carrier, or, for the unpaired uplink carrier The PHICH channel subset determined by all uplink data transmission blocks includes part of the PHICH channels on the downlink carrier. For example, divide all PHICH channels into multiple PHICH channel subsets, the number of PHICH channel subsets is equal to the number of unpaired carriers, each unpaired uplink carrier corresponds to a subset, and each subset completely disjoint.

[0102] Regardless of whether it is a paired uplink carrier or a non-paired uplink carrier, within the PHICH channel range...

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Abstract

The invention discloses an allocation method for a physical hybrid repeat request AICH (Acquisition Indicator Channel) and equipment adopting same, and relates to the technical field of wireless networks. The method expands the adjustable range when PHICH (Physical hybrid ABQ Indicator Channel) is allocated, lowers the probability that the PHICH can not be equipped onto a data transmission block, and improves the utilization efficiency of the PHICH. The method provided by the embodiment of the invention comprises the steps as follows: a joined field is generated according to an extended field and an n-DMRS (Data Management and Retrieval System) field in a physical downlink control channel, and the value of the extended n-DMRS can be defined according to the joined field; a PHICH index corresponding to the present uplink data transmission block is calculated out through utilizing the minimal label index of a PRB (Physical Recourse Block) occupied by the present uplink data transmission block and a value of the extended n-DMRS; and the PHICH corresponding to the present uplink data transmission block is defined by the PHICH index. The method is applicable to an occasion adopting a single carrier or multi-carrier.

Description

technical field [0001] The present invention relates to the technical field of wireless networks, in particular to a method and device for allocating physical hybrid retransmission indication channels. Background technique [0002] In the Evolved Universal Terrestrial Radio Access (E-UTRA) system of the 3rd Generation Partnership Project (3th Generation Partner Project, 3GPP), data transmission / reception supports Hybrid Automatic Repeat Request (Hybrid Automatic Repeat Request, HARQ) technology to reduce data transmission delay and obtain higher data transmission rate. In the HARQ technology, the data receiver needs to feed back acknowledgment / denial (ACK / NACK) information to the data sender, so as to help the data sender confirm whether the data is correctly received by the data receiver. [0003] In the downlink direction of the 3GPP E-UTRA system, the base station (such as eNodeB) feeds back the ACK / NACK information of uplink data reception to the user equipment (UE) thr...

Claims

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Application Information

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IPC IPC(8): H04B7/26H04L1/18
Inventor 薛丽霞余政
Owner HUAWEI TECH CO LTD
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