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Resource scheduling method and device in mobile communication system

A mobile communication system and resource scheduling technology, applied in the field of resource scheduling methods and devices, can solve the problems that UE cannot correctly demodulate ACK/NACK information and affect PUSCH transmission performance, so as to avoid PHICH resource conflict, improve detection accuracy, Guaranteed to take full advantage of the effect

Active Publication Date: 2011-04-27
DATANG MOBILE COMM EQUIP CO LTD
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  • Claims
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Problems solved by technology

[0013] Through the test of system performance and related research, it is found that the PHICH resource allocation method under single-antenna transmission is currently used for PUSCH. When the maximum number of users supported by the PHICH resource of the system is less than the number of PRBs contained in the system PUSCH, it may appear as follows: When different UEs are assigned to the same PHICH resource, this kind of PHICH resource conflict will cause the UE to be unable to correctly demodulate ACK / NACK information, and ultimately affect the transmission performance of PUSCH

Method used

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  • Resource scheduling method and device in mobile communication system
  • Resource scheduling method and device in mobile communication system
  • Resource scheduling method and device in mobile communication system

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Embodiment Construction

[0029] The embodiments of the present invention will be described in detail below with reference to the drawings.

[0030] The present invention proposes a resource scheduling method in a mobile communication system, which is suitable for single-antenna transmission of PUSCH without considering the use of virtual MU-MIMO (hereinafter referred to as intra-cell MU-MIMO). In order to ensure that this method has as little impact as possible on the existing PUSCH resource allocation process, the allocation of PHICH resources is mainly accomplished through the selection of the cyclic shift of the user-level DMRS. Due to the situation that UEs in different cells use the same PUSCH resource for data transmission (hereinafter referred to as inter-cell MU-MIMO), by assigning different cell-level DMRS cyclic shifts to different cells, the DMRS between users in different cells can be avoided. In order to follow this principle, when assigning user-level DMRS cyclic shifts to each UE, it is ne...

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Abstract

The invention discloses a PHICH resource scheduling method, which comprises two steps of: 1, taking first UE (User Equipment) at the front of an array from a preset priority array, and distributing PUSCH (Physical Uplink Shared Channel) resources for the first UE; and 2, distributing the PHICH resources for the first UE according to the PUSCH resource distributing results of the first UE and the DMRS cycle shift chosen by a preset strategy, wherein the first UE cannot be scheduled when the PHICH resources are not be distributed to the first UE. In addition, the invention also discloses a PHICH resource distributing system.

Description

Technical field [0001] The present invention relates to the field of communication, and in particular to a resource scheduling method and device in a mobile communication system. Background technique [0002] The LTE (Long Term Evolution) system uses PHICH (Physical Hybrid ARQ Indicator Channel, hybrid automatic repeat request indicator channel) to transmit HARQ (Hybrid Automatic Repeat Request) for PUSCH (Physical Uplink Shared Channel) packets. , Hybrid automatic repeat request) feedback (ACK / NACK) information. The terminal decides whether to retransmit the PUSCH data packet according to the feedback information. [0003] The terminal's data packet transmission on the PUSCH has a certain timing relationship with the base station's ACK / NACK feedback. The PHICH resource is mapped to the control region of the downlink subframe. According to the system configuration, the system PHICH resources are divided into several PHICH groups, each PHICH group occupies different time-frequenc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W72/12
Inventor 胡奕李晓皎
Owner DATANG MOBILE COMM EQUIP CO LTD
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