Method and device for service sending

A service sending and service-specific technology, applied in the field of communication, can solve problems such as time delay and sending frequency without consideration

Inactive Publication Date: 2014-03-26
大唐电信科技产业控股有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0033] To sum up, the existing MS-ALOHA service preemption mechanism gives suggestions for classifying the corresponding priority status of the service: according to the service priority of emergency vehicles, safety, assistance and entertainment from high to low, although it shows that there are no When the time slot is free, the node sending the high-priority service can preempt the node sending the low-priority service, which ensures that the high-priority service can be sent first when the time slot resources are limited, but the service classification proposal does n

Method used

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  • Method and device for service sending

Examples

Experimental program
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Effect test

Embodiment 1

[0081] Embodiment 1: The system has no high-priority access time slots, and the vehicle needs to send high-priority services with low delay and high transmission frequency, but the original occupied time slots do not meet the characteristics of sending this service.

[0082] In order to briefly explain the process, the parameters in this embodiment are reduced and enlarged with reference to the actual system. It is assumed that every N slots constitute a frame (Frame), where the value of N is 10, and the frame period is 10ms. Nodes 1~ 9 The time slot occupancy is as follows: Figure 4 As shown, node 5 has occupied time slot 6, and the schematic diagram of a one-hop node is shown in Figure 5 shown. Assume that node 5 wants to send a high-priority service with a delay of 2 ms and a sending frequency of 200 Hz in time slot 8.

[0083] A specific implementation process is as follows:

[0084] Node 5 receives a high-priority service with a transmission delay of 2 ms and a trans...

Embodiment 2

[0091] Embodiment 2: The system has no high-priority access time slots, the vehicle needs to send high-priority services with low delay and high transmission frequency, and the originally occupied time slots meet the characteristics of sending the service.

[0092] The parameters of the system in this embodiment refer to Embodiment 1, and the occupancy of time slots of nodes 1 to 9 in the system is as follows Figure 6 As shown, node 5 has occupied time slot 5, and the schematic diagram of a one-hop node is shown in Figure 5 shown. Assume that node 5 wants to send a high-priority service with a delay of 2 ms and a sending frequency of 200 Hz in time slot 9.

[0093] A specific implementation process is as follows:

[0094] Node 5 receives a high-priority service with a transmission delay of 2 ms and a transmission frequency of 200 Hz in time slot 9. Considering factors such as its own transmission processing time, receiving node processing time, communication transmission t...

Embodiment 3

[0099] Embodiment 3: The system has high-priority access time slots, and the vehicle needs to send high-priority services with low delay and high transmission frequency.

[0100] The parameters of the system in this embodiment refer to Embodiment 1. There is one high-priority service access time slot every four common time slots in the system, and the occupancy of nodes 1 to 9 time slots in the system is as follows: Figure 7 As shown, node 5 has occupied time slot 6, and the schematic diagram of a one-hop node is shown in Figure 5 shown. Assume that node 5 wants to send a high-priority service with a delay of 2 ms and a sending frequency of 200 Hz in time slot 8.

[0101] A specific implementation process is as follows:

[0102] Node 5 receives a high-priority service with a transmission delay of 2 ms and a transmission frequency of 200 Hz in time slot 8. Considering its own transmission processing time, receiving node processing time, and communication transmission time, ...

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Abstract

The invention discloses a method and a device for service sending, and is used for realizing sending of specific service with low time delay and high frequency. The method for service sending, provided by the invention, comprises the following steps: a local node determines a specific time slot used for sending the specific service during each frame period according to sending time delay and frequency of the specific service to be sent; the local node sends a reservation message used for specifying the specific time slot occupied by the local node in each frame period to other nodes; when the specific time slot is up, and when other nodes confirms that the local node can occupy the specific time slot of each frame period, the local node sends the specific service in the specific time slot of each frame period.

Description

technical field [0001] The present invention relates to the technical field of communications, in particular to a service sending method and device. Background technique [0002] When the (Mobile Slotted ALOHA, MS-ALOHA) access algorithm is used in the ad hoc network, the nodes periodically send frame information (Frame Information, FI), so that each node can understand the network topology and resource occupancy, and in the FI Two bits are defined in the priority state field to indicate the priority of the node sending data, the basic mechanism for high priority data to preempt low priority data is given, and a classification suggestion for the corresponding priority state of the business is given According to the priorities of emergency vehicles, safety, assistance, and entertainment, the corresponding business priorities are ranked from high to low, and the characteristics of delay and transmission frequency are not considered to classify services. In the Internet of Vehi...

Claims

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Application Information

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IPC IPC(8): H04W74/08
Inventor 李凤冯媛房家奕赵丽赵毅
Owner 大唐电信科技产业控股有限公司
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