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Method and system for transmitting control information in off-network direct mode

A technology for controlling information and direct mode, applied in transmission systems, digital transmission systems, multiple uses of transmission paths, etc., can solve problems such as no information transmission, no off-network direct function, etc.

Inactive Publication Date: 2015-09-02
POTEVIO INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Since there is no base station in the walk-through mode, the master UE needs to send some special control information to notify other UEs of the current resource occupancy, and the slave UE needs to send some special control information to request resources; however, the current LTE system specification The off-network direct function has not been considered in the protocol, and how to realize the transmission of control information in the off-network direct mode is not given in the agreement

Method used

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  • Method and system for transmitting control information in off-network direct mode
  • Method and system for transmitting control information in off-network direct mode
  • Method and system for transmitting control information in off-network direct mode

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Embodiment Construction

[0018] The present invention proposes a method for transmitting control information in off-network direct mode, such as figure 1 It is a flowchart of a method for transmitting control information in the off-network direct mode proposed by the present invention, the method includes:

[0019] Step 101: setting a direct mode special signaling control channel (DMSSCH, Direct Mode Special Signal Control Channel), and using this channel as a downlink logical channel carrying the control information;

[0020] Step 102: the master UE sends control information for declaring resource occupation to the slave UE by using the DMSSCH, or the slave UE sends control information for requesting resources to the master UE by using the DMSSCH.

[0021] In the above method, the mapping relationship between the DMSSCH and the downlink transmission channel is:

[0022] The mapping relationship between the DMSSCH and the downlink shared transport channel (DL-SCH).

[0023] In the above method, the ...

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Abstract

The invention provides a method for transmitting control information under direct mode operation (DMO) and a system thereof. The method comprises the following steps that a direct mode special signal control channel (DMSSCH) is set and the channel is taken as a downlink logic channel used to bear the control information; master control UE uses the DMSSCH to send the control information used to declare a resource occupation state to subordinate UE; or the subordinate UE uses the DMSSCH to send the control information used for requesting the resource to the master control UE. By using the method and the system of the invention, the control information transmission under the DMO in a TD-LTE system can be realized.

Description

technical field [0001] The invention relates to the technical field of trunking mobile communication systems, in particular to a method and system for transmitting control information in an off-network direct mode. Background technique [0002] The trunking mobile communication system is an advanced mobile command and dispatch system, which plays a huge role in departments that have high requirements for command and dispatch functions. Compared with the public mobile communication system, the trunking mobile communication system has the characteristics of fast call connection, high security and reliability, and high resource utilization, and is especially suitable for command and dispatch. At present, digital trunking communication systems widely used in China include TETRA, iDEN, GoTa, GT800, etc., and these systems are all based on GSM technology or CDMA technology. [0003] Time Division Synchronous Code Division Multiple Access Long Term Evolution (TD-LTE) technology is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/10H04L1/00H04L5/00
Inventor 周欣赵顾良陈永
Owner POTEVIO INFORMATION TECH CO LTD