Uplink multi-user multiple input multiple output (MIMO) pairing method, device and base station

A user pairing and multi-user technology, which is applied in the direction of multiple use of transmission paths, electrical components, digital transmission systems, etc., can solve the problems of high complexity of pairing algorithms and does not take into account the imbalance of large-scale links, etc., to improve the uplink Throughput, reduced complexity, reduced interference between users

Active Publication Date: 2013-02-13
CHINA TELECOM CORP LTD
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Problems solved by technology

These pairing algorithms do not take into account the characteristics of large-scale link imbalance caused by indoor natural isolation, and the complexity of pairing algorithms is high

Method used

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  • Uplink multi-user multiple input multiple output (MIMO) pairing method, device and base station
  • Uplink multi-user multiple input multiple output (MIMO) pairing method, device and base station
  • Uplink multi-user multiple input multiple output (MIMO) pairing method, device and base station

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Embodiment Construction

[0028] The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are illustrated.

[0029] figure 1 A flowchart showing an embodiment of the uplink multi-user MIMO pairing method of the present invention.

[0030] Such as figure 1 As shown, in step 102, the channel where the user is located is determined according to the uplink signal power of the user received by the base station at different ports, and the user is divided into antenna groups corresponding to the channel where the user is located. For example, the port with the strongest receiving power is used as the channel where the user is located.

[0031] In step 104, the user to be paired in the first antenna group is selected, and the channel capacity after each user in the second antenna group is paired with the user to be paired is calculated. The second antenna group is an antenna group different from the first ante...

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Abstract

The invention discloses an uplink multi-user multiple input multiple output (MIMO) pairing method, an uplink multi-user MIMO pairing device and a base station, and relates to the technical field of wireless mobile communication. The method comprises the following steps of: determining channels with users according to the power of uplink signals received from the users at different ports of the base station, and dividing the users into antenna groups corresponding to the channels with the users; selecting a user to be paired from the first antenna group, and calculating channel capacity after each user in the second antenna group is paired with the user to be paired; and selecting a user paired with the user to be paired to make the channel capacity maximum in the second antenna group as the paired user of the user to be paired in the second antenna group. According to the method and the device, the users can be grouped according to the received power of the channels according to the characteristic that indoor floors are greatly isolated and the uplink signal of a single user of a single channel is differently attenuated in a large scale at different antenna ports of the base station, and a plurality of users in the groups are paired, so that the computational complexity of a pairing algorithm is lowered, inter-user interference is reduced, and the uplink throughput of a system is effectively improved.

Description

technical field [0001] The present invention relates to the technical field of wireless mobile communication, in particular to an uplink multi-user MIMO pairing method, device and base station. Background technique [0002] In general, MIMO (Multiple-Input Multiple-Output) system capacity scales with min{N t , N r} and grow linearly. In the actual system, due to the complexity of terminal multi-transmission antenna design, a large number of low-cost LTE terminals with single transmission antenna will exist in the network, which cannot fully utilize the MIMO channel capacity. In order to solve this problem, multiple single-antenna transmitting users can be paired together to form multi-user MIMO transmission together with base station multiple antennas, thereby improving system uplink throughput. [0003] In my country, with the comprehensive and in-depth coverage of 2G / 3G networks, most of the indoor distribution systems that have been built are single-channel constructio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/06H04L5/00
Inventor 鲁娜毕奇
Owner CHINA TELECOM CORP LTD
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