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Method, device, and system for mobile communication

A mobile communication device and mobile communication technology, applied in the field of devices and systems, and mobile communication methods, capable of solving the problems of multiple signaling, fluctuation of carrier-to-interference ratio in feedback time, large feedback overhead, etc.

Inactive Publication Date: 2015-05-20
HUAWEI TECH CO LTD
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Problems solved by technology

[0004] Therefore, the terminal must support simultaneous reporting of the carrier-to-interference ratio of the two data streams, which requires a lot of signaling and high feedback overhead. Moreover, due to the long feedback time of GERAN and the fluctuation of carrier-to-interference ratio caused by inter-cell interference, it is difficult for the base station to accurately The modulation and coding method is determined according to the carrier-to-interference ratio; in addition, if the initial data stream adopts the same modulation and coding method, in order to ensure that the two data streams sent by the base station can be correctly decoded by the terminal, the base station must follow the modulation method determined by the lower carrier-to-interference ratio. The encoding method encodes the initial data stream, resulting in a decrease in throughput

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  • Method, device, and system for mobile communication
  • Method, device, and system for mobile communication
  • Method, device, and system for mobile communication

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Embodiment Construction

[0124] The embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0125] figure 2 It is a reference diagram of the processing state of the mobile communication method provided by the embodiment of the present invention. It includes a total of M antennas from 0 to M-1 on the base station side, and each antenna can send downlink data to the terminal in the MIMO sub-channel under the control of the base station. The terminal includes, but is not limited to, user equipment such as a mobile phone. When the base station sends data for the first time, it first modulates and codes the initial data stream to be sent according to the default modulation and coding method to obtain the modulated data stream, and then generates M mapped data streams X0 to X (M-1 ), and then uniformly mix the M mapping data streams to generate M mixed data streams C0 to C(M-1), which are transmitted through different antennas. Speci...

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Abstract

Provided in the present invention is a method for mobile communication. The method comprises: modulating and coding an M-number of primary data streams on the basis of a modulation and coding scheme to acquire an M-number of modulated data streams, where M is a positive integer greater than 1 and M is no greater than the number of antennae; symbol mapping respectively the M-number of modulated data streams to generate an M-number of mapped data streams; mixing the M-number of mapped data streams to generate an M-number of mixed data streams; and, transmitting the M-number of mixed data streams respectively on the different antennae to a terminal. The method allows for reduced signaling overhead and for reduced system feedback overhead.

Description

technical field [0001] The present invention relates to the communication field, in particular to a mobile communication method, device and system. Background technique [0002] Multiple-Input Multiple-Output (MIMO) technology has been widely used in wireless communication technologies such as wireless fidelity (WIFI) and long term evolution (LTE). Using technology, the input sequence can be divided into multiple data streams and transmitted in parallel at the same time, and the channel capacity can be greatly improved with the increase in the number of transceiver antennas. With the Global System for Mobile Communications (Global System for Mobile Communications, GSM) / Enhanced Data Rates for Global Evolution (EDGE) Radio Access Network (GSM / EDGE Radio Access Network, GERAN) communication system Due to the rapid increase in the number of users in China and the requirement for an increase in data transmission speed, 3GPP is studying the application of MIMO technology to GE...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/04H04L1/16
CPCH04B7/0413H04L1/0003H04L1/0009H04L5/0044H04L5/0048H04L5/006
Inventor 游月意
Owner HUAWEI TECH CO LTD
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