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Resource scheduling method and device of feedback information

A technology of feedback information and resource scheduling, applied in network traffic/resource management, wireless communication, electrical components, etc., can solve problems such as PHICH resource conflicts

Active Publication Date: 2010-11-10
DATANG MOBILE COMM EQUIP CO LTD
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AI Technical Summary

Problems solved by technology

The PHICH implementation scheme in the LTE-A system has not yet been determined, that is, the PHICH mapping relationship between each DL / UL carrier has not yet been determined. If the parameter-based pair defined in the current LTE is still used PHICH resource indication, these two parameters are also calculated by resource allocation information similar to LTE PUSCH scheduling information and DMRS cyclic shift indication information, then the future LTE-A system also has the problem of PHICH resource conflict

Method used

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  • Resource scheduling method and device of feedback information
  • Resource scheduling method and device of feedback information
  • Resource scheduling method and device of feedback information

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Embodiment Construction

[0072] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0073] For the LTE system, if all users are assigned the same DMRS sequence, there will be no PHICH resource conflict, but there will be large out-of-band interference for the DMRS sequence between two users with adjacent resources, which will affect the demodulation performance. Therefore, the technical solution proposed by the present invention ensures that the DMRS sequences between two users with adjacent resources are as different as possible, and by making UEs with adjacent resources allocated to different DMRS sequences as much as...

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Abstract

The invention provides a resource scheduling method of feedback information. The method comprises the following steps. A base station queues the minimum PRB numbers of the PUSCH transmission resource of N users. The base station chooses one DMRS sequence from the collection of available DMRS sequences for the user UE1 which ranks first in the queue and calculates corresponding PHICH resource according to the minimum PRB number and the index value of the DMRS sequence of the user. The base station chooses one index value different from the DMRS sequence of the previous user from the collectionof available DMRS sequences for other users in the queue and calculates the corresponding PHICH resource according to the minimum PRB number and the index value of the DMRS sequence of the user. According to the technical scheme of the invention, the confliction problem of the PHICH resource of a plurality of users in the system is solved, consequently the PHICH resource can be distributed reasonably and system performance is optimized.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular, the present invention relates to a resource scheduling method and equipment for feedback information. Background technique [0002] Mobile and broadband have become the development direction of modern communication technology. 3GPP (3rd Generation Partnership Project, Third Generation Partnership Project) is committed to the evolution of 3G systems. The goal is to develop 3GPP wireless access technology towards high data rate, low delay and optimized packet data Application direction evolution. In 3GPP LTE (Long Term Evolution, long-term evolution) and LTE-A (LongTerm Evolution-Advanced, long-term evolution advanced) systems, the transmission of feedback information ACK / NACK for PUSCH (Physical Uplink Shared Channel, physical uplink shared channel) is through PHICH (Physical hybrid-ARQ Indicator Channel, physical hybrid automatic retransmission request indication channe...

Claims

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Application Information

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IPC IPC(8): H04W28/16H04W72/04H04W72/12
Inventor 赵锐
Owner DATANG MOBILE COMM EQUIP CO LTD
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