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HARQ retransmission resource allocation method

A resource allocation and transmission resource technology, which is applied in the field of uplink multi-user HARQ retransmission resource allocation in a single carrier frequency division multiple access system, can solve the problems of small frequency hopping gain, unfixed frequency hopping distance, complex frequency hopping scheme, etc., to achieve Large frequency diversity gain, the effect of preventing debris

Inactive Publication Date: 2012-10-10
ZTE CORP
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AI Technical Summary

Problems solved by technology

2-subband half-frequency hopping can also be extended to 3-subband, 4-subband or even more sub-band frequency hopping, and the frequency hopping scheme is more complicated
The advantage is that the continuity of non-frequency hopping users and the maximum throughput of a single user are fully maintained. The disadvantage is that the frequency hopping distance is not fixed, resulting in different FH gains for different users, and some users near the center of the bandwidth may have a small frequency hopping gain
However, there is no method for HARQ resource allocation to reduce fragmentation in the prior art

Method used

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  • HARQ retransmission resource allocation method
  • HARQ retransmission resource allocation method
  • HARQ retransmission resource allocation method

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Embodiment Construction

[0035] Such as Figure 4 As shown, the configuration of HARQ includes the following steps:

[0036] Step 401, the base station divides the bandwidth resources, and sets the HARQ retransmission resource area in the frequency domain between the frequency hopping user's first transmission resource area and the non-frequency hopping user resource area (scheduling area), and close to the frequency hopping user's first transmission resource area (scheduling area). Transport resource area;

[0037] The resource area for the first transmission of frequency hopping users refers to the resource area occupied by all frequency hopping users under the base station for the first transmission. Setting the HARQ retransmission resource area in the frequency band close to the first transmission resource area of ​​the frequency hopping user can effectively prevent the generation of fragments.

[0038] The base station sets the transmission of the HARQ retransmission blocks of its subordinate u...

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Abstract

This invention discloses a method for configuring HARQ re-transmission resources, which puts forward a new restricted distribution mode of HARQ re-transmission block resource including: a base station divides band width resource into a first time transmission resource region of FH users, a HARQ re-transmission resource region and a resource region of non-HF users, in which, the HARQ re-transmission resource region is between the other two regions and close to the first time transmission resource region of HF users. The method provided by the invention not only ensures the multiplex flexibility, but also obtains major frequency diversity gain, and avoides fragment of resource allocation.

Description

technical field [0001] The present invention relates to a mobile communication system, in particular to a method for configuring uplink multi-user HARQ retransmission resources of a single carrier frequency division multiple access system in 3GPP LTE (Third Generation Partnership Project Long Term Evolution). Background technique [0002] In order to meet people's ever-growing needs for mobile communications, there are some basic requirements for the selection of uplink wireless transmission technologies: such as support for scalable bandwidth, moderate PAPR / CM (peak-to-average ratio / cubic metric) , to ensure the orthogonality of uplink transmission, etc. The single-carrier transmission scheme SC-FDMA (Single-Carrier Frequency Division Multiple Access) has become a basic candidate for LTE uplink transmission due to its low PAPR / CM, which can improve power efficiency and expand coverage. [0003] There are two data transmission schemes based on subcarrier mapping: Distribute...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18H04L12/56H04L1/06
Inventor 张峻峰赵建平孟彪
Owner ZTE CORP
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