Method and device for joint dispatching of PUSCH (physical uplink shared channel) resources and PHICH (physical hybrid automatic repeat request indicator channel) resources

Abstract

Disclosed are a method for joint scheduling of a physical uplink shared channel (PUSCH) resource and a physical hybrid automatic repeat request indicator channel (PHICH) resource, and a device thereof. The method and the device are applicable in a PUSCH single-antenna transmission communication system, where a user equipment (UE) is configured with an identical user-class demodulation reference signal (DMRS) cycle shift. The method comprises: distributing for the UE the PUSCH resource and the PHICH resource on the basis of the priority in a descending order of the UE-awaiting-scheduling; when distributing for each UE the PUSCH resource and the PHICH resource, the PUSCH resource and the PHICH resource distribution process comprising: determining, on the basis of the current PHICH resource availability state and the user-class DMRS cycle shift of the current UE, the resource location of a starting physical resource block (PRB) incapable of conducting a PUSCH transmission for the current UE; distributing the PUSCH resource for the UE on the basis of the current PUSCH resource availability state and the resource location of the starting PRB incapable of conducting the PUSCH transmission for the current UE; and distributing the PHICH resource for the current UE on the basis of the PUSCH resource distribution result of the current UE and of the user-class DMRS cycle shift of the current UE. Employment of the current invention allows for distribution of the PHICH resource while distributing the PUSCH resource for the UE, and ensures that conflict between PHICH resources of each UE is prevented.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a joint scheduling method and device for PUSCH resources and PHICH resources. Background technique [0002] The LTE (Long Term Evolution, long-term evolution) system can support a maximum system bandwidth of 20MHz. In order to better support the broadband system, the LTE system uses SC-FDMA (Single Carrier–Frequency Division Multiple Access, single carrier frequency division multiple access), In the frequency domain, the whole broadband frequency selective channel is divided into several flat sub-channels, and each sub-channel is orthogonal to each other. In the case of coexistence of multi-user services, time-frequency resources can be flexibly allocated for data transmission. The smallest physical resource unit that can be allocated is a PRB (Physical Resource Block, physical resource block), and the continuous physical resource with a width of 180 kHz in the fr...

AI Technical Summary

Problems solved by technology

In order to follow this principle, when assigning user-level DMRS cyclic shifts to each UE, it is necessary to take into account the allocation of user-level DMRS cyclic shifts for users who use the same PUSCH resources for data transmission in different cells, that is, adjacent cells use the same PUSCH resources. Users who use PUSCH resources for data transmission need to allocate the same user DMRS cyclic shift. Therefore, when PHICH resource conflicts occur, the above constraints largely limit the freedom of user-level DMRS adjustment, thereby affecting UE scheduling and increasing The transmission delay of large uplink data is not conducive to guaranteeing service QoS

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