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Enhanced Physical Downlink Control Channel Scrambling and Demodulation Reference Signal Sequence Generation

A reference signal sequence and downlink technology, which is applied in the field of enhanced physical downlink control channel scrambling and demodulation reference signal sequence generation, and can solve problems such as inefficiency and inaccuracy of errors

Active Publication Date: 2022-02-08
APPLE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there may be cases where a UE other than the target UE successfully descrambles and decodes the DCI directed to the target UE
In these cases, the UE may incorrectly act on the DCI, causing errors or other inefficiencies

Method used

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  • Enhanced Physical Downlink Control Channel Scrambling and Demodulation Reference Signal Sequence Generation
  • Enhanced Physical Downlink Control Channel Scrambling and Demodulation Reference Signal Sequence Generation
  • Enhanced Physical Downlink Control Channel Scrambling and Demodulation Reference Signal Sequence Generation

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0155] Example 1 includes an apparatus to be employed in an enhanced Node B (eNB) comprising: scrambling circuitry for receiving downlink control information including downlink control information to be transmitted on an enhanced physical downlink control channel (EPDCCH) a bit sequence of information (DCI) and for scrambling the bit sequence based on a cell identifier to provide a scrambled bit sequence; and a modulation circuit coupled with the scrambling circuit for receiving the scrambled bits and for modulating the scrambled bits with a quadrature phase shift keying modulation scheme to provide blocks of complex-valued modulation symbols.

example 2

[0156] Example 2 includes the apparatus of example 1, wherein the scrambling initialization seed includes a cell identifier, and the scrambling circuit is to scramble the DCI bits based on the scrambling initialization seed.

example 3

[0157] Example 3 includes the apparatus of example 1, wherein the cell identifier is a virtual cell identifier provided to the scrambling circuit by the radio resource layer.

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PUM

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Abstract

Methods, apparatus and systems for providing enhanced physical downlink control channel scrambling and demodulation reference signal sequence generation are described.

Description

[0001] The patent application of this invention is the international application number PCT / US2013 / 053653, the international application date is August 5, 2013, the application number entering the Chinese national phase is 201380035894.1, and the name is "enhanced physical downlink control channel scrambling and Demodulation Reference Signal Sequence Generation" is a divisional application of the invention patent application. [0002] Cross References to Related Applications [0003] This application claims priority to the following patent applications: U.S. Provisional Patent Application No. 61 / 679,627, filed August 3, 2012, and entitled "Advanced Wireless Communication Systems and Techniques"; U.S. Provisional Patent Application No. 61 / 692,597, entitled "Advanced Wireless Communication Systems and Techniques"; U.S. Provisional Patent Application No. 61 / 707,784, entitled "Advanced Wireless Communication Systems and Techniques," filed September 28, 2012; and US Provisional Pate...

Claims

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Application Information

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IPC IPC(8): H04L27/26H04L1/00H04L5/00
CPCH04L1/0072H04L27/2613H04L27/2692H04L27/26Y02D30/70H04W72/23H04J11/0036H04L5/0051H04L27/20H04W88/08
Inventor 韩承希朱源陈晓刚覃意符仲凯
Owner APPLE INC
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