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Processing method, transmitter and user terminal of physical downlink control channel data

A technology for physical downlink control and user terminal, which is applied in the field of communication and can solve the problems such as the inability to calculate the starting position of the scrambling code sequence and the inability to intercept the scrambling code sequence.

Active Publication Date: 2016-09-14
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the Rel-11 version of LTE, the modulation method of ePDCCH is no longer fixed QPSK, and may also have 16QAM modulation and 64QAM modulation, so that the data length of each eCCE in ePDCCH is no longer fixed, so it needs to be intercepted The length of the scrambling code sequence is no longer fixed at 72 bits. When the modulation method of the kth eCCE where the ePDCCH is located adopts QPSK, the length of the scrambling code sequence that the eCCE needs to intercept is bits, and when the modulation mode adopts 16QAM (Quadrature Amplitude Modulation, quadrature amplitude modulation), the length of the scrambling code sequence is bits, when the modulation mode adopts 64QAM, the length of the scrambling code sequence is bits, at this time, only knowing how many eCCEs intercepted the scrambling code sequence before can not calculate the starting position of the corresponding scrambling code sequence that the current eCCE needs to intercept, which leads to the inability of the current eCCE to intercept the scrambling code sequence, so that in Unable to scramble and descramble ePDCCH under multiple modulation modes

Method used

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  • Processing method, transmitter and user terminal of physical downlink control channel data
  • Processing method, transmitter and user terminal of physical downlink control channel data
  • Processing method, transmitter and user terminal of physical downlink control channel data

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The physical downlink control channel data processing method provided by the embodiment of the present invention is based on the transmitter side, such as figure 1 shown, including:

[0046] S101. Generate a scrambling code sequence corresponding to the control channel unit according to the index number of the control channel unit and / or the modulation mode adopted by the control channel unit.

[0047] S102. Use a scrambling code sequence to scramble the physical downlink control channel data.

[0048] S103. Send the scrambled physical downlink control channel data to the user terminal.

[0049] On the other hand, another method for processing physical downlink control channel data is provided, based on the user terminal side, such as figure 2 shown, including:

[0050] S201. Generate a scrambling code sequence corresponding to the control channel unit according to the index number of the control channel unit and / or the modulation mode adopted by the control channel...

Embodiment 2

[0056] The processing method of the physical downlink control channel data provided by the embodiment of the present invention, such as image 3 shown, including:

[0057] S301. The transmitter generates a dedicated long sequence for the user terminal according to the UE_Specific parameter of the user terminal.

[0058] Specifically, in a cell, there are multiple users. Generally, the ePDCCHs of all users are located in one subframe. Before performing ePDCCH scrambling on these users, the base station generates a A dedicated long sequence, the above seed is a parameter set for calculating the initial value of the long sequence, and each user's seed includes the user-specific UE_Specific parameter.

[0059] Taking a user as an example, the seed C used to generate a long sequence for the user init for c init =UE RNTI ×2 15 +n subframe ×2 8 +3200,UE RNTI UE_Specific parameter for the user, n subframe is the parameter of the subframe index number, according to the seed C ...

Embodiment 3

[0111] The transmitting terminal 1 provided by the embodiment of the present invention, such as Figure 6 shown, including:

[0112] The first scrambling code sequence generation unit 11 is configured to generate a scrambling code sequence corresponding to the control channel unit according to the index number of the control channel unit and / or the modulation mode adopted by the control channel unit.

[0113] The scrambling unit 12 is configured to scramble the physical downlink control channel data by using a scrambling code sequence.

[0114] The transmitting unit 13 is configured to send the scrambled physical downlink control channel data to the user terminal.

[0115] Further, such as Figure 7 As shown, the first scrambling code sequence generating unit 11 may include:

[0116] The first long sequence generation unit 111 is configured to generate a dedicated long sequence for the user terminal according to the dedicated parameters of the user terminal.

[0117] The f...

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PUM

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Abstract

Embodiments of the present invention provide a physical downlink control channel data processing method, a transmitting end, and a user terminal, which relate to the communication field and can realize interception of scrambling code sequences under various modulation modes, so that the The method for scrambling and descrambling the physical downlink control channel data is: generating a scrambling code sequence corresponding to the control channel unit according to the index number of the control channel unit and / or the modulation mode adopted by the control channel unit; using the scrambling code sequence The code sequence scrambles the physical downlink control channel data; and sends the scrambled physical downlink control channel data to the user terminal. The embodiment of the present invention is used for scrambling and descrambling of physical downlink control channel data.

Description

technical field [0001] The present invention relates to the communication field, in particular to a processing method for physical downlink control channel data, a transmitting end and a user terminal. Background technique [0002] The LTE (Long Term Evolution, long-term evolution) project is an evolution of 3G, a transition between 3G and 4G technologies, and a global standard of 3.9G. It improves and enhances 3G air access technology and improves cell edge user performance, improve cell capacity and reduce system delay, using OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) and MIMO (Multiple Input Multiple Output, Multiple Input Multiple Output) as the only standard for its wireless network evolution. [0003] In the transmission of LTE downlink service data, multiple UEs (User Equipment, user terminals, referred to as users) dynamically multiplex time-frequency resources in a cell, and the time-frequency resources occupied by ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/04H04L5/00
CPCH04L5/0053H04L25/03866H04J13/10H04W72/23H04B7/0413
Inventor 武雨春冯淑兰
Owner HUAWEI TECH CO LTD