Channel detection method, communication method, terminal and system

A channel detection and communication terminal technology, applied in the field of communication, can solve the problems of unfavorable D2D communication and cellular communication compatibility and unified scheduling, increase UE, etc., achieve good compatibility and improve communication quality

Inactive Publication Date: 2013-04-24
HUNAN CHAIRMAN IND INTELLIGENT SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing technology performs channel detection by adding a new reference signal, which not only increases the complexity and cost of UE (User...

Method used

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  • Channel detection method, communication method, terminal and system
  • Channel detection method, communication method, terminal and system
  • Channel detection method, communication method, terminal and system

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0066] see figure 2 , an embodiment of the present invention provides a channel detection method, the method comprising:

[0067] 101: Direct communication between terminals. The first terminal of D2D communication initiates a sounding reference signal SRS measurement request to the base station, and the SRS measurement request carries the identifier of the second terminal of D2D communication;

[0068] 102: Receive a notification message sent by the base station in response to the measurement request, where the notification message carries parameter information of the SRS signal sent by the second terminal;

[0069] 103: Measure the SRS signal according to the parameter information, and obtain channel state information of the channel between the first terminal and the second terminal.

[0070] Wherein, the channel state information includes at least one of SRS signal strength, channel quality and channel response.

[0071] The method provided by the embodiment of the prese...

Embodiment 2

[0073] see image 3 , this embodiment describes in detail the method and steps for each D2D UE to obtain channel state information between two UEs by measuring the SRS sent by other D2D UEs, and then determine D2D communication parameters according to the channel state information. The communication method includes:

[0074] 201: D2D_UE1 and D2D_UE2 are preparing to perform D2D communication or performing D2D communication and need to perform channel detection;

[0075] Specifically, in the embodiment of the present invention, the first communication terminal D2D_UE1 and the second communication terminal D2D_UE2 are in the D2D communication system, and the communication status of the two communication terminals can be ready for D2D communication, determine whether to communicate through channel detection, select Functions such as communication resources, resource optimization allocation, power allocation, adaptive coding and modulation; functions such as selecting communicatio...

Embodiment 3

[0092] see Figure 4 , the embodiment of the present invention specifies the method and steps for each D2D UE to obtain the measurement channel information between two UEs by measuring the SRS sent by other D2D UEs, and then determine the D2D UE for cooperative communication according to the channel state information. The communication method include:

[0093] 301: Each D2D_UE2 with cooperative communication capability notifies surrounding D2D_UE1 that it has this capability;

[0094] For this step, D2D_UE1 receives the first notification message sent by D2D_UE2, and the first notification message carries the information that D2D_UE2 has cooperative communication capability.

[0095] 302: D2D_UE1 initiates an SRS measurement request to the base station;

[0096] Wherein, the D2D_UE1 knows that the D2D_UE2 has cooperative communication capability, and when it wants to seek cooperation with the D2D_UE2, it initiates an SRS measurement request to the base station. Specifically...

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Abstract

The invention discloses a channel detection method, a communication method, a terminal and a system, and belongs to the field of communication. The channel detection method includes that a first terminal of device-to-device (D2D) communication sends a supplemental restrgint system (SRS) measuring requirement to a base station, and identifications of a second terminal of the D2D communication are carried by the SRS measuring requirement; notification information sent by the base station is received, and parameter information of SRS signals sent by the second terminal is carried by the notification information; and the SRS signals are measured by the parameter information, and channel state information of a channel between the first terminal and the second terminal is obtained. The communication terminal comprises a sending module, a receiving module, a measuring module and a communication module. Channel detection is conducted for the a SRS signals in a local thermodynamic equilibrium (LTE) cellular system is well achieved, and unity scheduling and communication of the D2D communication and the LET cellular system are achieved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a channel detection method, a communication method, a terminal and a system. Background technique [0002] In recent years, wireless communication networks have increasingly occupied people's lives due to their great flexibility, and have become an indispensable part of people's lives, such as direct communication between terminals (Device to Device, D2D communication for short). D2D communication enables data packets to be transmitted directly through the terminal without any intermediate infrastructure, and paging messages are sent directly from the paging terminal to the paged terminal without the help of base stations and core networks. This communication method can give Wireless communication brings huge benefits. [0003] In the existing technology, channel detection is performed during D2D communication. A reference signal is specially designed for D2D communication, and...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04W68/00
CPCH04L1/00H04L5/006H04L5/0048
Inventor 周晗
Owner HUNAN CHAIRMAN IND INTELLIGENT SYST CO LTD
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