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A resource mapping method and device thereof

A resource mapping and resource block technology, applied in the field of domain communication, can solve problems such as loss of accuracy and affect blind detection at the receiving end, and achieve the effect of blind detection

Active Publication Date: 2020-04-21
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In fact, when the fixed-point bit width is small, the above-mentioned power balance method has computational overhead, and the accuracy will be lost during the power balance calculation process, which will affect the blind detection at the receiving end.

Method used

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  • A resource mapping method and device thereof
  • A resource mapping method and device thereof
  • A resource mapping method and device thereof

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Embodiment Construction

[0061] The specific embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0062] image 3 It is the basic process of wireless communication. At the sending end, the source is sent out after sequentially undergoing source coding, channel coding, rate matching and modulation mapping. At the receiving end, the destination is output through demapping and demodulation, derate matching, channel decoding and source decoding in sequence. Polar codes can be used for channel coding and decoding. Since the code length of the original Polar code (mother code) is an integer power of 2, it is necessary to implement a Polar code with any code length through rate matching in practical applications. The sending end performs rate matching after channel encoding to achieve any target code length, and at the receiving end, de-rate matching is performed before channel decoding. It should be noted that the basic process o...

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Abstract

The present application discloses a resource mapping method and device thereof, wherein the method includes: a network device performs nested structure mapping on a modulation symbol set to obtain a first resource block, and the modulation symbol set carries at least one user equipment corresponding to each user equipment. The downlink control information of the same user equipment is carried on the first resource block continuously; the network device reconstructs the first resource block to obtain a second resource block, and the second resource block carries the same The modulation symbols of the user equipment are discontinuous; the network device maps the second resource block to a time-frequency resource, so that the user equipment obtains the set of modulation symbols according to the time-frequency resource. By adopting the present application, the receiving end can find symbol pairs with similar signal-to-noise ratios in the candidate positions of the same aggregation level without calculation, which is beneficial to the blind detection of the receiving end.

Description

technical field [0001] The present application relates to the technical field of communications, and in particular to a resource mapping method and device thereof. Background technique [0002] Currently, in wireless communication protocols, the encoding method of downlink control information (English: Downlink Control Information, abbreviated: DCI) of a new air interface (English: New Radio, abbreviated: NR) has been determined to be a polar (Polar) code. A nested structure (English: nested structure) is proposed in the Physical Downlink Control Channel (English: Physical Downlink Control Channel, abbreviated: PDCCH) of NR, which has the same resource element (English: Resource Element, abbreviated: RE) that will appear in The characteristics in different aggregation levels (English: Aggregation Level, AL for short) and the number of candidate positions (English: candidate) included in different aggregation levels are different. [0003] At present, a PDCCH blind detection...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00
CPCH04L1/0038H04L5/0037H04L5/0042H04L5/0053H04L5/0094H04L1/0013H04L1/0033
Inventor 罗禾佳皇甫幼睿陈莹戴胜辰李榕
Owner HUAWEI TECH CO LTD
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