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

Abstract

The invention discloses a method and device for joint dispatching of PUSCH (physical uplink shared channel) resources and PHICH (physical hybrid automatic repeat request indicator channel) resources, and the method and device provided by the invention are applicable to a PUSCH single-antenna transmission communication system in which UE (user equipment) is provided with same user-level DMRS (demodulation reference signal) cyclic shifts. The method comprises the following step: allocating PUSCH resources and PHICH resources for UE based on the sequence of the priorities of UE to be dispatched from high to low, wherein as for each UE with allocated PUSCH resources and PHICH resources, the process for allocating the PUSCH resources and the PHICH resources is as follows: determining the initial position of a PRB (physical resource block) resource incapable of finishing PUSCH transmission for the current UE based on the available condition of the current PHICH resources and the user-level DMRS cyclic shift of the current UE; allocating PUSCH resources for the current UE based on the available condition of the current PUSCH resources and the initial position of the PRB resource incapable of finishing PUSCH transmission for the current UE; and allocating PHICH resources for the current UE based on the PUSCH resource allocation result of the current UE and the user-level DMRS cyclic shift of the current UE. According to the invention, the PHICH resources allocated to each UE can be prevented from confliction while the PUSCH resources and the PHICH resources are allocated to each UE.

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 ...

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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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