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Processing and transmitting symbol blocks in wireless communications

A symbol block, symbol technology, applied in transmission systems, error prevention/detection through transmission repetition, digital transmission systems, etc., can solve problems such as interference

Active Publication Date: 2020-04-10
ZTE CORP
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  • Description
  • Claims
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Problems solved by technology

Although repetition extends transmission range, it introduces interference when there are transmitters in the same or adjacent cells

Method used

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  • Processing and transmitting symbol blocks in wireless communications
  • Processing and transmitting symbol blocks in wireless communications
  • Processing and transmitting symbol blocks in wireless communications

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Embodiment Construction

[0027] In order to solve the above-mentioned problems caused by existing enhanced coverage schemes, embodiments of the present disclosure perform pseudo-randomization on symbol blocks when processing output signals to resolve interference. Pseudo-randomization of the transmitted signal can enhance existing schemes and reduce the impact of interference from other transmitters in the same or neighboring cells.

[0028] In one embodiment, the pseudo-randomization is based on a pseudo-random code obtained from values ​​already used in OFDM systems, such as cell ID, symbol block index n S and Cell Radio Network Temporary Identifier (C-RTNI).

[0029] In one embodiment, a sequence of length n has the value A n , and has length n values. In another embodiment, the n-length sequence is a scrambling sequence. In another embodiment, the n-length sequence is a spreading sequence.

[0030] In one embodiment, a spreader is provided in a Discrete Fourier Transform Spread Spectrum OFDM (...

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Abstract

This disclosure provides systems and methods for randomizing output transmissions in a Discrete Fourier Transform-Spread-OFDM (DFT-S-OFDM) system. An output signal is pseudo-randomized using spreadingor repeating and scrambling to increase coverage range of user equipment (UE) and reduce the effects of interference to other UEs, thereby providing a more robust multiuser network.

Description

technical field [0001] The present disclosure relates to the field of wireless communication, and more particularly, to a data transmission method and device. Background technique [0002] In wireless communication, a mobile station or user equipment (UE) transmits to a serving base station (BS) via a wireless uplink and receives transmissions from the serving base station (BS) via a wireless downlink in an Orthogonal Frequency Division Multiplexing (OFDM) network . In some wireless networks, such as implementations of the 3GPP Rel-14 standard, a repeated transmission mechanism is introduced to achieve coverage enhancement if the transmitter repeats time slots or subframes. Although repetition extends transmission range, it introduces interference when there are transmitters in the same or adjacent cells. Contents of the invention [0003] The present disclosure provides systems and methods for repetitive and pseudorandom output transmissions. Embodiments of the disclos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04B7/26
CPCH04L1/08H04L25/03866H04L27/2636
Inventor 戴建强袁志锋戴博方惠英
Owner ZTE CORP
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