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Scrambling code sequence configuration method and device, user equipment and base station

一种扰码序列、用户设备的技术，应用在通信领域，能够解决不能满足需求等问题

Active Publication Date: 2019-12-06
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing control channel can only adopt a discrete transmission mode that only supports one user for information transmission at the same time-frequency resource position, which is far from meeting the needs

Method used

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  • Scrambling code sequence configuration method and device, user equipment and base station
  • Scrambling code sequence configuration method and device, user equipment and base station
  • Scrambling code sequence configuration method and device, user equipment and base station

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0214] like figure 1 Shown is a schematic flowchart of a method for configuring a scrambling code sequence according to this embodiment. The method for configuring the scrambling code sequence in this embodiment is applicable to the situation where the base station and the terminal use the enhanced control channel for information transmission. The execution subject of this embodiment is the base station. The enhanced control channel area is divided into a common (Common) search space and a UE-specific (User Equipment Specific, user equipment specific) search space, that is, the same enhanced control channel can only correspond to the common search space or the UE-specific search space, or both Corresponds to a common search space and a UE-specific search space. Both the common search space and the UE-specific search space can adopt the centralized transmission mode and the discrete transmission mode, or the common search space can only support the discrete transmission mode,...

Embodiment 2

[0230] Based on the first embodiment, this embodiment provides a specific embodiment in which the base station determines the initialization value of the scrambling code sequence only based on the search space.

[0231] In this embodiment, if the search space is the UE-specific search space, the base station performs a UE-specific scrambling code initialization operation. The initialization value of the scrambling code sequence is usually related to a certain parameter specific to the user equipment, such as RNTI (Radio Network Temporary Identifier, wireless network temporary identification), the time slot number of the enhanced control channel transmission, and at least one of a certain parameter specific to the transmission node One is related, for example, the transmission node identification ID (Identity, identity code) and so on. Specifically, the initialization value c of the scrambling code sequence determined according to the UE-specific scrambling code initialization ...

Embodiment 3

[0238] Based on the first embodiment, this embodiment provides a specific embodiment in which the base station determines the initialization value of the scrambling code sequence only based on the search space.

[0239]In this embodiment, if the search space is a UE-specific search space or a common search space, the base station performs a transmission node-specific initialization operation. Specifically, the initialization value c of the scrambling code sequence determined according to the specific initialization operation of the transmission node init for or Among them, n RNTI Corresponding to the value of RNTI associated with the wireless network temporary identification when the enhanced control channel is transmitted, n s is the slot number, is the identifier of the cell where the user equipment is located, and the identifier of the cell may be a physical cell ID (Identity, identity identification number) or a virtual cell ID, and the virtual cell ID may be a virt...

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PUM

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Abstract

The invention provides a scrambling code sequence configuration method, a scrambling code sequence configuration device, user equipment and a base station. The method comprises the following steps: acquiring a search space and / or a transmission mode corresponding to an enhanced control channel; performing scrambling code initialization operation according to the search space and / or the transmission mode, and determining an initialization value of a scrambling code sequence; determining a scrambling code sequence according to the initialization value of the scrambling code sequence; and scrambling the transmission signal transmitted by the enhanced control channel according to the scrambling sequence and then sending the scrambled transmission signal, so as to enable the user equipment receiving the transmission signal to perform descrambling operation according to the scrambling sequence in the transmission signal. According to the invention, the base station or the user equipment determines the initialization value of the scrambling code sequence according to the search space or the transmission mode, or the base station or the user equipment determines the initialization value ofthe scrambling code sequence according to the search space and the transmission mode at the same time, thereby ensuring that the interference between different cells or terminals is randomized as much as possible.

Description

technical field [0001] The present invention relates to communication technology, in particular to a configuration method, device, user equipment and base station of a scrambling code sequence. Background technique [0002] With the rapid development of communication technology, more and more users use mobile terminals. Existing control channels can only adopt a discrete transmission mode that only supports one user for information transmission at the same time-frequency resource position, which is far from meeting the requirements. Therefore, an enhanced physical downlink control channel (ePDCCH, enhanced Physical Downlink Control Channel) appears. [0003] Different from traditional control channels that only support discrete transmission modes, the enhanced control channel can support both discrete and centralized transmission modes. Among them, the enhanced control channel that adopts the centralized transmission mode can support Multiple users can transmit information...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L25/03H04J11/00H04J13/10
CPCH04J11/0069H04J13/10H04L1/0045H04L1/0046H04L1/0072H04L25/03866H04W72/23H04L5/0051H04L5/0053H04W88/02H04W88/08
Inventor 刘建琴周永行吴强
Owner HUAWEI TECH CO LTD
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