Multi-user device access method and apparatus

A technology for user equipment and device access, applied in the field of communications, can solve problems such as reducing the signal transmission rate and restricting applications, and achieve the effect of improving the signal transmission rate and resource utilization.

Inactive Publication Date: 2017-11-21
BEIJING XINWEI TELECOM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When IDMA technology is directly used in a multi-carrier communication system, in order to ensure that different user equipment can successfully decode, it is necessary to use low-bit-rate

Method used

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  • Multi-user device access method and apparatus
  • Multi-user device access method and apparatus

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] figure 1 It is a flow chart of a multi-user equipment access method provided in Embodiment 1 of the present invention. This embodiment is applicable to the situation where multi-user equipment performs uplink data communication, and the method can be accessed by the multi-user equipment provided in the embodiment of the present invention. device, which can be implemented in software or hardware, such as figure 1 shown, including:

[0027] S101. Perform different spread spectrum processing operations on the data of each user equipment, so that the data of each user equipment after the spread spectrum processing are independent of each other.

[0028] Specifically, before performing different spread spectrum processing operations on the data of each user equipment, first perform at least one of the following preprocessing on the data of each user equipment: channel coding processing, scrambling processing, and modulation processing, and then Different spread spectrum pr...

Embodiment 2

[0044] figure 2 It is a flow chart of a multi-user equipment access method provided by Embodiment 2 of the present invention. On the basis of the above-mentioned embodiments, this embodiment performs different spread spectrum processing operations on the data of each user equipment, and is optimized as Different spreading sequences of preset lengths are used to copy the data of each user equipment respectively, such as figure 2 shown, including:

[0045] S201. Process the data of each user equipment separately by using different spreading sequences of preset lengths, and the processed data of each user equipment are independent of each other.

[0046] Wherein, the spreading sequence is a pseudo-random sequence or an orthogonal sequence.

[0047] For example, a short-length spreading code set can be pre-defined as a spreading sequence, such as the 4th-order Hadamard sequence {c 1 , c 2 , c3 , c 4}, where c 1 =(1,1,1,1), c 2 =(1,-1,1,-1), c 3 =(1,1,-1,-1),c 4 =(1,-1,-...

Embodiment 3

[0051] image 3 It is a flow chart of a multi-user equipment access method provided by Embodiment 3 of the present invention. On the basis of the above-mentioned embodiments, this embodiment performs different spread spectrum processing operations on the data of each user equipment, and is optimized as Convolute the data of each user equipment with different spreading sequences, such as image 3 shown, including:

[0052] S301. Perform convolution processing on the data of each user equipment with different spreading sequences, so that the data of each user equipment after convolution processing are independent of each other.

[0053] Wherein, the spreading sequence may be a complex Gaussian sequence. Specifically, for the data of each user equipment, a complex Gaussian sequence with a length of L is randomly generated independently, and a sequence with better performance can also be constructed or searched by preset criteria. Suppose the data of the kth user equipment is s...

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Abstract

The invention discloses a multi-user device access method and apparatus. The method includes the steps of performing different spread spectrum processing operations on data of multiple user devices separately, so that data of the user devices subjected to the spread spectrum processing are mutually independent; and uplink-transmitting the data of the multiple user devices after the spread spectrum processing simultaneously at the same frequency. In the embodiment of the invention, the data of the multiple user devices are separately subjected to the different spread spectrum processing operations so that the data of the user devices subjected to the spread spectrum processing are mutually independent, the data of the multiple user devices after the spread spectrum processing are uplink-transmitted simultaneously at the same frequency so that the multiple user devices can simultaneously transmit at the same frequency, and the signal transmission rate and resource utilization rate are improved.

Description

technical field [0001] Embodiments of the present invention relate to the field of communication technologies, and in particular, to a method and device for accessing multi-user equipment. Background technique [0002] An important aspect in the new generation of wireless communication is the selection of uplink multiple access technology. Most of the current multiple access technologies are orthogonal multiple access methods, such as frequency division multiple access (Frequency Division Multiple Access, FDMA), time division multiple access (Time Division Multiple Division Multiple Access, TDMA), code division multiple access (Code Division Multiple Access, CDMA) and orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA). Different user equipments are distinguished by mutually orthogonal frequencies, time slots, codewords and time-frequency resources, so as to realize orthogonal transmission between different user equipments. ...

Claims

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Application Information

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IPC IPC(8): H04B7/0452H04B7/0404H04B1/7087
CPCH04B1/7087H04B7/0404H04B7/0452
Inventor 刘兵朝孙鹏
Owner BEIJING XINWEI TELECOM TECH
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