Physical hybrid automatic repeat request indicator channel (PHICH) data sending method and device

A data transmission method and a technology of a data transmission device, which are applied to electrical components, wireless communications, etc., can solve problems such as waste of power resources, low utilization of PHICH channel frequency domain resources, and inability to allocate PHICH resources, etc., so as to reduce the demodulation threshold, Effective anti-jamming and improving the utilization of frequency domain resources

Active Publication Date: 2014-11-26
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

[0020] The prior art method of allocating PHICH channel frequency domain resources and power resources only guarantees the allocation of available PHICH resources for users. Therefore, when dealing with multiple users, PHICH resources cannot be reasonably allocated, except for causing PHICH channel frequency domain resources. In addition to low utilization, the power of each PHICH group may not be controlled due to the randomness of allocation, resulting in waste of power resources
These problems will affect the performance of users demodulating PHICH, thereby affecting the effect and rate of uplink HARQ, and may increase the interference to adjacent cells

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  • Physical hybrid automatic repeat request indicator channel (PHICH) data sending method and device
  • Physical hybrid automatic repeat request indicator channel (PHICH) data sending method and device
  • Physical hybrid automatic repeat request indicator channel (PHICH) data sending method and device

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Embodiment Construction

[0037] The PHICH data transmission and device provided by the present invention will be described in more detail below in conjunction with the accompanying drawings and embodiments.

[0038] In the prior art, when allocating PHICH resources to a UE (User equipment, user terminal), the base station only considers whether the PHICH resources are occupied by other users, and allocates the PHICH resources to the UE if the resources are free. This approach may not only lead to an unbalanced number of bearer users in the PHICH group, resulting in low utilization of PHICH channel frequency domain resources, but also may cause the power of each PHICH group to be uncontrolled due to the randomness of allocation, affecting end users' demodulation of PHICH channel effect.

[0039] Taking the 20M system bandwidth as an example, Let N g =2, TDD system, common cyclic prefix, subframe configuration 0. Then at subframe 0, the number of PHICH groups is Therefore, according to the existin...

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Abstract

The invention provides a physical hybrid automatic repeat request indicator channel (PHICH) data sending method and device. The method comprises the following steps of: sequencing all sets of user equipment (UE) according to size of sending power, selecting a PHICH group without UE, and determining a pre-distributed user number N, wherein N is more than 1; distributing N sets of UE which are not subjected to PHICH group distribution to the PHICH group; adjusting variable parameters in a preset formula for determining a PHICH group sequence number to which the UE belongs to obtain a sequence number of the PHICH group to which the UE belongs; determining a PHICH resource distributed to the UE; and for each set of UE, sending PHICH data to the corresponding PHICH resources by adopting the maximum sending power Pmax of the UE in the PHICH group to which the UE belongs. By the method and the device, the frequency domain resource utilization rate of the PHICH group can be increased; interference can be effectively resisted; and a PHICH demodulation threshold of a user is reduced.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a PHICH data sending method and device. Background technique [0002] In the LTE (Long Term Evolution, long-term evolution) system, the PHICH channel (Physical HARQ indicator Channel, physical hybrid automatic repeat request indicator channel) carries the ACK (ACKnowledge, correct response) of the uplink HARQ (Hybrid ARQ, hybrid automatic repeat request) ) / NACK (Negative ACKnowledge, error response) information. [0003] In the same downlink subframe, multiple PHICHs are mapped to the same resource element to form a PHICH group, wherein the PHICHs in the same group are distinguished by different orthogonal sequences. [0004] According to the description in section 9.1.2 of the 3GPP 36.213 protocol, PHICH resources are numbered by a pair identification, where is the PHICH group serial number; is the orthogonal sequence number within a group. The spe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04
Inventor 李静周陈芬
Owner DATANG MOBILE COMM EQUIP CO LTD
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