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UE device and method

A technology for configuring information and time-frequency resources, which is applied in machine-to-machine/machine-type communication services, code division multiplexing systems, network data management, etc., and can solve problems such as high requirements for time synchronization and frequency synchronization.

Active Publication Date: 2017-12-08
シズベルインターナショナルエスエー
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the way of data packets composed of information bits has higher requirements for time synchronization and frequency synchronization.

Method used

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  • UE device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0109] Embodiment 1 illustrates the flow chart of DS sending and receiving, as attached figure 1 shown.

[0110] For UE10, in step S101, mapping configuration information to a discovery signal (DS), the configuration information at least includes one of the following:

[0111] First information: whether the UE10 is within the coverage of the cell

[0112] Second information: the cell physical identifier C_ID1 of the cell where the UE10 resides

[0113]The third information: the physical identifier G_ID of the device-to-device (D2D) group where UE10 resides

[0114] The fourth information: the index I_SF of the subframe to which the time-frequency resource block R1 belongs in the S candidate subframes capable of transmitting DS in the current time window

[0115] In step S102, the DS is sent on the time-frequency resource block R1.

[0116] For UE11, in step S111, a discovery signal (DS) is detected on the time-frequency resource block R1. In step S112, configuration infor...

Embodiment 2

[0123] Those skilled in the art can understand Embodiment 2 as a preferred example of Embodiment 1. Embodiment 2 illustrates the flowchart of sending a D2D communication request based on DS configuration information, as shown in the attached figure 2 shown.

[0124] For UE20, in step S201, mapping configuration information to a discovery signal (DS), the configuration information at least includes:

[0125] -Whether the UE20 is within the coverage of the cell

[0126] - Physical identification G_ID of the device-to-device (D2D) group where the UE 20 resides

[0127] In step S202, the DS is sent on the time-frequency resource block R1. In step S203, the communication request signal P is received on the time-frequency resource block R2, the R2 is the time-frequency resource block after the R1, and the P includes at least one of the following:

[0128] -Whether UE21 is within the coverage of the cell

[0129] - The cell physical identifier C_ID2 of the cell where the UE21 r...

Embodiment 3

[0138] Embodiment 3 illustrates a schematic diagram of subframes allowed to send DSs within a time window. In Embodiment 3, the sending UE first maps configuration information to a discovery signal (DS), and the configuration information includes at least:

[0139] The first information: whether the sending UE is within the coverage of the cell

[0140] The second information: send the cell physical identifier C_ID1 of the cell where the UE resides

[0141] The third information: the physical identifier G_ID of the device-to-device (D2D) group where the sending UE resides

[0142] The fourth information: the index I_SF of the subframe to which the time-frequency resource block R1 belongs in the S candidate subframes capable of transmitting DS in the current time window

[0143] Then, the sending UE sends the DS on the time-frequency resource block R1, and then the sending UE receives the communication request signal P on the time-frequency resource block R2, the R2 is the ti...

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PUM

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Abstract

The present invention proposes a discovery signal (DS) solution in D2D communication, including a UE device and a method therein. In one embodiment, the UE sends the DS to indicate configuration information through which a D2D communication connection can be established. The configuration information applies to DS using information bits and DS using sequences. By using the technical solutions provided in the present invention, the configuration information indicated by the DS can be minimized while meeting the requirements for establishing a D2D communication connection.

Description

technical field [0001] The present invention relates to a discovery signal (DS-Discovery Signal) transmission scheme in a D2D system, in particular to a DS transmission scheme based on a long-term evolution (LTE-Long Term Evolution) device-to-device (D2D-Device to Device) architecture. Background technique [0002] In the traditional 3rd Generation Partnership Project (3GPP-3rd Generation Partner Project) Long Term Evolution (LTE-Long Term Evolution) system, two frame structures are defined, that is, the frame structure of the FDD-Frequency Division Duplex system 1 and Time Division Duplex (TDD-Time Division Duplex) system frame structure 2. The difference between the two is that each subframe of the FDD frame structure is 1 millisecond (ms-millisecond), while the TDD system defines 1 to 2 special subframes in each frame (10 subframes). The downlink synchronization time slot (DwPTS-Downlink PilotTime Slot), the guard interval (GP-Guard Period), and the uplink synchronizatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W48/08H04W4/70H04W76/14
CPCH04W8/005H04W76/14H04W4/70H04J11/0069H04J13/0062H04W48/08H04J2211/005
Inventor 张晓博
Owner シズベルインターナショナルエスエー