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Method for direct-connect communication between terminals in wireless network communication system

A technology of direct connection communication and wireless network, which is applied in the field of direct connection communication between terminals in wireless network communication system, which can solve the problems of terminal power consumption and inability to adapt to low-power Internet of Things interconnection requirements, so as to avoid power consumption , Improve the effect of system resource utilization

Active Publication Date: 2015-09-09
SHANGHAI ENG RES CENT FOR BROADBAND TECH & APPL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this process will cause terminal power consumption, which cannot meet the low-power Internet of Things interconnection requirements
[0005] However, the traditional wireless communication technology has the characteristics of controllability and large capacity. The communication frequency is an authorized exclusive spectrum, and the interference level is in a controllable state.

Method used

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  • Method for direct-connect communication between terminals in wireless network communication system
  • Method for direct-connect communication between terminals in wireless network communication system
  • Method for direct-connect communication between terminals in wireless network communication system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] see figure 2 with image 3 , this embodiment is the process of deploying the same direct communication scenario in multiple cells in the controlled mode. Wherein, base station A and base station B correspond to two cells, Cell A and Cell B, respectively. Authorized terminals in the direct communication scenario D2DCaseX are distributed in Cell A and Cell B. The server assigns ResourceAllotA and ResourceAllotB of the D2DCaseX resources of Cell A and Cell B respectively. The authorized terminal in D2DCaseX determines that the cells it resides in are Cell A and Cell B according to the strength and quality of the pilot signals of Cell A and Cell B. The D2DCaseX terminal residing in the Cell uses the resource assignment of the current cell to perform direct communication.

Embodiment 2

[0066] see Figure 4 , this embodiment is a direct communication process between terminals in free mode. Wherein, under the control of the server, the base station broadcasts public direct connection communication resources in the cell. The terminal receives the time slot resource assignment broadcast message in the cell where it resides. The terminal adopts a resource competition method to perform direct communication between terminals.

Embodiment 3

[0068] see Figure 5 , this embodiment is a method of direct connection communication between terminals based on competition and handshake. All information exchanged between the sending end and the receiving end is carried on the direct connection communication resources allocated in the cell. Specifically include the following steps:

[0069] Step 1. The data sending end sends the random access preamble on the random access channel in the directly connected communication resource, and after sending the random access preamble, monitors the random access preamble response indication of the data receiving end in a preset window .

[0070] Step 2. The data receiving end monitors the random access preamble on the random access channel, and responds to the monitored preamble. The preamble response includes the following content:

[0071] a. The random access preamble response indication is sent on the control channel in the direct connection communication resource, scrambled by a...

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Abstract

The invention provides a method for direct-connect communication between terminals in a wireless network communication system. The method comprises the steps that a server assigns direct-connect communication resources to the authorized terminals in a direct-connect communication scenario; direct-connect communication is performed between terminals and terminals by the terminals in a terminal group according to the assigned direct-connect communication resources; partial terminals with capacity of establishing a bidirectional link with a base station in the terminal group can feed back measurement statistical information to the server; and resource assignment is adjusted by the server according to the back-fed direct-connect communication measurement statistical information and the current system state. According to the method for direct-connect communication between the terminals in the wireless network communication system, power consumption of connection-oriented communication process is avoided; a time division multiplexing mode is adopted and the method is compatible with existing wireless communication systems; meanwhile, system time slot resources used by direct-connect communication between the terminals are configured by the set server, and time slot resource allocation can be adjusted by the server according to the measurement statistical information so that utilization rate of the system resources is enhanced.

Description

technical field [0001] The invention relates to the technical field of wireless network communication, in particular to a method for direct communication between terminals in a wireless network communication system. Background technique [0002] In a wireless network communication system, Bluetooth technology is a typical low-power direct connection communication technology between terminals. Bluetooth is a radio technology that supports short-distance communication between devices (generally within 10m), and can exchange wireless information between many devices including mobile phones, PDAs, wireless headsets, laptops, and related peripherals. The use of Bluetooth technology can effectively simplify the communication between mobile communication terminal equipment, and can also successfully simplify the communication between equipment and the Internet, thus making data transmission more rapid and efficient, and broadening the road for wireless communication. Bluetooth ado...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W76/02H04W28/02
CPCH04W28/0215H04W76/14Y02D30/70
Inventor 徐云翔
Owner SHANGHAI ENG RES CENT FOR BROADBAND TECH & APPL
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