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US 12,587,943 B2Granted
Signal transmission method and apparatus, access node, processing unit, system and medium
AssigneeZte Corporation
InventorsYihua Ma, Yijian Chen, Zhifeng Yuan, Guanghui Yu
Life of this patent
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Abstract
Provided are a signal transmission method and apparatus, an access point, a processing unit, a system, and a medium. The signal transmission method includes, according to the channel estimation of a current AP, determining a multi-user uplink data signal and a first inter-user interference information matrix which correspond to the current AP; and transmitting the multi-user uplink data signal and the first inter-user interference information matrix to the next-stage node of the current AP in a front-haul link.
Claims18
A signal transmission method, comprising:
- determining a multi-user uplink data signal corresponding to a current AP and a first inter-user interference information matrix corresponding to the current AP according to a channel estimation of the current access point (AP);
- and
- transmitting the multi-user uplink data signal and the first inter-user interference information matrix to a next-stage node of the current AP in a front-haul link,
- wherein determining the multi-user uplink data signal corresponding to the current AP according to the channel estimation of the current AP comprises:
- in a case where the current AP is a first-stage AP, obtaining the multi-user uplink data signal corresponding to the current AP according to a conjugate matrix of the channel estimation of the current AP;
- and
- in a case where the current AP is not a first-stage AP, obtaining a current multi-user uplink data signal according to the conjugate matrix of the channel estimation of the current AP, and superimposing the current multi-user uplink data signal with a multi-user uplink data signal output from an upper-stage AP of the current AP to obtain the multi-user uplink data signal corresponding to the current AP.
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A signal transmission method, comprising:
- receiving a multi-user uplink data signal and a first inter-user interference information matrix which are transmitted by a last-stage access point (AP) in a front-haul link;
- and
- determining a signal for demodulation according to the multi-user uplink data signal and the first inter-user interference information matrix,
- wherein the signal for demodulation comprises:
- a product of a first matrix and the multi-user uplink data signal, wherein the first matrix is an inverse matrix of a sum of the first inter-user interference information matrix and a noise diagonal matrix;
- or,
- a product of a second matrix and the multi-user uplink data signal, wherein the second matrix is an inverse matrix of the first inter-user interference information matrix.
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Dependencies are inferred from the claim text.