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Frame information transmission method and device

A transmission method and frame information technology, applied in the field of communication, can solve the problems of large FI overhead, increased FI overhead, low spectral efficiency, etc.

Active Publication Date: 2017-03-08
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] To sum up, it can be seen from the FI frame structure in the prior art that the FI overhead is relatively large and the spectrum efficiency is relatively low
If considering the subsequent increase in frequency division or shortening the frame length to increase capacity, the FI overhead will also increase accordingly.

Method used

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  • Frame information transmission method and device
  • Frame information transmission method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] Example 1: Bottom Measurement: Determining Collisions

[0087] Interference is indicated for a slot by two types of low-level measurements, and a slot collision is determined for that slot. For example, there are three nodes, node A, node B, and node C respectively.

[0088] Suppose the distance between node B and node A is less than the distance between node B and node C:

[0089] Node A and Node C occupy the same resources, Node B detects Node A, but at the same time it can be determined that there is Type 2 interference (the interference power is determined according to the signal power and the total received power, and the interference power is higher than the determined threshold value) .

[0090] In this case, the Node B indicates that there is slightly stronger interference for this resource.

[0091] Suppose the distance between node B and node A is equal to the distance between node B and node C:

[0092] In this case, Node B may not solve any of them, and at...

Embodiment 2

[0096] Embodiment 2: The STI is removed, and the time slot occupancy information is transmitted. For example, there are four nodes, which are node A, node B, node C and node D respectively.

[0097] Wherein, it is assumed that node A and node B, node B and node C, node C and node D are one-hop neighbor nodes to each other. Nodes A, B, C, and D occupy time slots 1, 2, 3, and 4, respectively.

[0098] The FI message sent by node A does not indicate a specific STI.

[0099] Node B sends FI to indicate that time slot 1 is occupied by its one-hop neighbor node.

[0100] After receiving the information from node B, node C knows that time slot 1 is occupied by a two-hop node.

[0101] Node C indicates that slot 1 is occupied by a two-hop neighbor and slot 2 is occupied by a one-hop neighbor.

[0102] After receiving the information from node C, node D obtains the following information: slot 1 is occupied by a three-hop neighbor, slot 2 is occupied by a two-hop neighbor, and slot ...

Embodiment 3

[0105] Embodiment 3: The combination of bottom-level measurement and high-level to deal with the collision state. For example, there are five nodes, which are node A, node B, node C, node D and node E respectively.

[0106] Both node C and node A occupy time slot 1, and node D and node B occupy other time slot resources respectively. Assume that node B occupies time slot No. 2, and node D occupies time slot No. 3. Node E occupies time slot No. 4.

[0107] Both node B and node C are one-hop neighbor nodes of node D.

[0108] Node D and node E are one-hop neighbor nodes.

[0109] Time slot 1:

[0110] Node A and Node C send messages in slot 1 at the same time:

[0111] Node D correctly decodes the information sent by node C, that is, according to the underlying measurement, there is no type of interference (the specific determination is the same as that in Embodiment 1, and will not be described here), that is, it is not determined that a collision occurs.

[0112] Node B ...

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Abstract

The invention discloses a frame information transmission method and device and is used for reducing the frame information cost and improving the system frequency efficiency. The frame information transmission method provided by the invention comprises the steps of determining FI needing to be sent on sending sources, wherein the FI comprises occupation condition information of each source sensed by a node, the occupation condition information of each resource does not comprise source temporary identifier STI information corresponding to the node occupying the source, the sources are slots or time-frequency blocks; and sending the FI.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular to a frame information (Frame Information, FI) transmission method and device. Background technique [0002] In the existing distributed resource allocation algorithm based on FI time slot reservation, the FI protocol overhead is relatively large, resulting in relatively low system frequency efficiency. [0003] Time slot reservation The time slot resource allocation algorithm mechanism refers to the time slot resource allocation mechanism that adopts the time slot reservation method. Usually, the time slot resource reservation is realized by means of frame information (FI) interaction, and the typical ones are RR-ALOHA, MS-ALOHA algorithm, the basic principle of MS-ALOHA is as follows: [0004] The mobile time division LOHA (Mobile Slotted Aloha, MS-ALOHA) mechanism is a dedicated short-range communication technology (Dedicated Short Range Communications, DSRC...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04
Inventor 冯媛周海军房家奕唐纪晔赵丽
Owner DATANG MOBILE COMM EQUIP CO LTD
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