Method and device for resource allocation

A resource allocation and wireless resource technology, applied in the field of communication, can solve problems such as messages that cannot be received correctly by other terminals, missed hearing, and exceeding delay requirements, etc.

Active Publication Date: 2017-10-24
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] When using the PC5 interface for communication, due to the influence of half-duplex, if the sender and receiver use the same frequency band for communication, if the two send messages at the same subframe position, the two cannot receive each other’s messages at the same time, resulting in Leaking messages from other terminals, even if the retransmission scheme is adopted, this situation cannot be completely avoided. If there are too many retransmissions, it will bring too much delay, thus exceeding the delay requirement
On the other hand, if terminals with close distances use the same time-frequency resources to send messages, not only will they not be able to receive each other’s messages, but they will also cause interference to each other, so that the messages sent by both parties cannot be correctly received by other terminals.
[0010] Aiming at the problem of mutual interference between terminals caused by using the same time-frequency resources to send messages due to the close distance between terminals in related technologies, no effective solution has been proposed

Method used

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  • Method and device for resource allocation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0198] Preferred embodiment 2 can be understood as the preferred embodiment of the second example above

[0199] In the preferred embodiment 2 of the present invention, the vehicle device B has a positioning function and can obtain its own location information in real time. Since the V2X message sent by the vehicle device B needs to be correctly received by the surrounding vehicles, and the surrounding vehicles may also need to send For V2X messages, considering the impact of half-duplex and co-channel interference, adjacent vehicles cannot allocate the same resources. However, in order to improve resource utilization, considering that vehicles that are far away do not need to monitor each other and there is no interference, vehicles that are far away can allocate exactly the same resources. Therefore, the base station can allocate appropriate resources after acquiring the geographic location information of the vehicle so as to maximize resource utilization without causing int...

Embodiment 3

[0226] Preferred embodiment 3 can be understood as the preferred embodiment of the above-mentioned example 2

[0227] In a preferred embodiment of the present invention, another method for reducing geographic location reporting overhead is provided, including:

[0228] Step 1: A network control device (such as a base station) sends an area location indication message;

[0229] The area location indication information includes: the central geographic location of each area, direction and angle information, and a list of horizontal and vertical distance information. E.g:

[0230] Region ID

Central location

direction angle information

Lateral distance

vertical distance

1

(x 1 ,y 1 )

A 1

Dh 1

Dv 1

2

(x 2 ,y 2 )

A 2

Dh 2

Dv 2

…

N

(x n ,y n )

A n

Dh n

Dv n

[0231] Further, the network control device sends the area location indication infor...

Embodiment 4

[0237] With reference to the above multiple embodiments, after the terminal determines the geographic location indication information, it may send it through MAC CE and / or physical layer signaling.

[0238] For example, the geographic location indication information includes N bits of information, the first M bits are sent through the MAC CE, and the latter N-M bits are sent through physical layer signaling. Wherein, N is a natural number greater than 0. The value range of M is 0-N.

[0239] Specifically, the terminal sends information of the next N-M bits in the N-bit geographical location indication information through the physical layer uplink control channel PUCCH.

[0240] The information of the first M bits in the N-bit geographical location indication information is sent by the MCE CE. The dedicated logical channel identifier (LCID) corresponding to the MAC CE is sent in the MAC subheader corresponding to the MAC CE.

[0241] Further, at the same moment, the terminal...

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PUM

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Abstract

The invention provides a method and a device for resource allocation. The method includes the following steps: network control equipment acquires position indication information reported by a vehicle terminal; and the network control equipment allocates radio resources of the vehicle terminal according to the position indication information. Through the technical scheme, the network control equipment can allocate the radio resources of the vehicle terminal according to the position indication information. The problem in related technologies that terminals which are close and use the same time-frequency resources to send messages interfere with each other is solved. The situation in which close terminals interfere with each other due to the fact that the terminals use the same radio resources is avoided, namely, the utilization rate of radio resources is improved on the premise of avoiding interference and listening incompleteness.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a resource allocation method and device. Background technique [0002] With the increase of vehicles, how to reduce traffic accidents and how to rescue and coordinate on-site traffic in time after a traffic accident occurs is a problem that needs to be solved in the existing traffic. With the development of communication technology and electronic technology, vehicle-mounted equipment is equipped on the vehicle, and various information interactions are carried out through the vehicle-mounted equipment, such as accident warning information, traffic status prompt information, etc. The communication-based collision warning system realizes real-time information interaction between vehicles and between vehicles and roadside infrastructure by using advanced wireless communication technology and new generation information processing technology, and informs each other of the current sta...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04W4/04
CPCH04W72/0446H04W72/51H04W4/04H04W72/04
Inventor 罗薇陈琳马子江
Owner ZTE CORP
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