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Multi-user cooperation transmission data traffic method based on service characteristic

A technology for multi-user collaboration and data services, applied in the field of multi-user cooperative data transmission services based on service characteristics, can solve problems such as low non-real-time data services, avoid contention, reduce the probability of service response, and reduce packet loss rate effect

Inactive Publication Date: 2009-02-18
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to propose a method for multi-user collaborative data service transmission based on service characteristics, so as to solve the problem that non-real-time data services with lower service priority cannot receive service responses in densely populated areas due to the high volume of voice traffic. Improve the use efficiency of the voice channel of the system, and improve the service quality of the data service without affecting the normal voice communication

Method used

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  • Multi-user cooperation transmission data traffic method based on service characteristic
  • Multi-user cooperation transmission data traffic method based on service characteristic
  • Multi-user cooperation transmission data traffic method based on service characteristic

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Experimental program
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Embodiment 1

[0032] Embodiment 1: Uplink and downlink cooperative transmission of data services

[0033] This embodiment takes figure 1 The schematic diagram of the mobile communication system using the uplink and downlink coordinated transmission of the present invention is shown to introduce the specific implementation manner of the present invention.

[0034] In the method of multi-user cooperative data service transmission based on service characteristics of the present invention, the terminal adopts two sets of wireless transceiver devices: one set is used for long-distance communication between the terminal and the base station, and the other set is used for short-distance communication between terminals. Communication sending and receiving; at the terminal, background sound cancellation technology and discontinuous voice transmission technology are adopted for voice services, and data packet transmission is adopted for data services.

[0035] like figure 1 The schematic diagram of...

Embodiment 2

[0056] Embodiment 2: Handling of unexpected short-distance connection interruption during cooperative transmission

[0057] In the process of step 2 and step 3 of the uplink cooperative transmission method, if the short-distance connection channel 16 is interrupted unexpectedly, such as relative movement occurs between the data user 12 and the cooperative user 14, the distance becomes larger and the communication quality of the channel deteriorates, and the channel becomes unusable , which can determine whether the channel connection is normal through a certain activity status flag. If the detection flag is sent to the other party and no confirmation is obtained within a certain period of time, the channel connection is considered to be interrupted unexpectedly. In this case, the data user 12 then needs to reconnect other available voice users, and transmits from the next data packet of the last successfully transmitted data packet; The base station 11 makes a call and waits ...

Embodiment 3

[0059] Embodiment 3: Performance Simulation

[0060] Due to the symmetry of uplink and downlink communication, only one-way communication is considered in the simulation. Figure 8 In the given performance simulation, the number of voice users varies from 20 to 35, the number of data users is 25, and 20 channels are shared; Figure 9 In the given performance simulation, the number of voice users is 25, the number of data users varies from 40 to 56, and 20 channels are shared. The two business parameters are shown in Table 1 and Table 2.

[0061] Table 1 voice service parameters

[0062] call average time call average interval voice average

silent time average voice activity

Expect 3 minutes 3 minutes 1.5 seconds 1 second

[0063] Table 2 Data Service Parameters

[0064] Data Service Arrival Rate Average size of data service files 5 data files / sec 5 packets

[0065] Figure 8 The comparison between the performanc...

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Abstract

The invention discloses a method for multiuser collaborated transmission for data based on service features, characterized in that short distance connection is established between voice user and data user, voice user can serve as collaborated user, employs voice channel for accomplishing uplink and downlink transmission during idle period of voice. The invention effectively promotes voice channel utilization efficiency without influencing voice service quality, can improves data service quality when telephone traffic is busy.

Description

technical field [0001] The invention belongs to the technical field of a wireless channel allocation method for digital information transmission, and in particular relates to a method for user cooperative data service transmission in wireless mobile communication. Background technique [0002] Voice service and data service are the two main types of services in the mobile communication system. The traditional mobile communication system provides different services according to the service quality requirements of the two services: the voice service is a real-time service. To ensure the service quality of the voice, the system Voice channels are allocated preferentially for voice services. Once the base station establishes a voice channel connection with a voice user terminal, the channel allocated will not be used by other users until the channel is released after the session ends; data services are non-real-time services, such as SMS, MMS, and CRBT For downloading, etc., the...

Claims

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Application Information

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IPC IPC(8): H04Q7/38H04Q7/22H04L12/56
Inventor 麦磊鑫秦晓卫戴旭初
Owner UNIV OF SCI & TECH OF CHINA
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