Time-frequency resource allocation method and device

A time-frequency resource and allocation method technology, applied in the field of time-frequency resource allocation methods and devices, can solve problems such as large delay in direct service transmission, and achieve the effect of avoiding failure to send normally

Active Publication Date: 2017-05-17
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] When there are direct services sent to multiple target groups on the transmitting UE side, since direct data can only be sent to one target group in one SC cycle, the direct services of other target groups can only wait for other SC cycles to send, and there is direct service transmission The problem of large delay

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  • Time-frequency resource allocation method and device
  • Time-frequency resource allocation method and device

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Embodiment Construction

[0059] It can be known from the above that in the existing solution, the base station only allocates transmission resources to the transmitting UE once in one SC period, or only allows the transmitting UE to automatically select transmission resources once. The transmitting UE can only send direct data to one target group in one SC period (the number of direct data transmissions can be multiple times, but the data transmitted in one SC period is the same). However, in practical applications, there are often scenarios where direct services are sent to multiple target groups on the transmitting UE side. Since direct data can only be sent to one target group in one SC period, the direct services of other target groups can only wait for other SC periods to be sent. When there are many direct services, some of the direct services may need to wait for multiple SC cycles before being sent, and there is a problem of large transmission delay.

[0060] In the embodiment of the present ...

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Abstract

The invention provides a time-frequency resource allocation method and device. The method comprises the following steps: receiving N resource pools for the scheduled resource allocation method and issued through base station configuration, N being an integer and N>=2; detecting whether downward control information is received; when detecting the downward control information, obtaining position information of time-frequency resources in the downward control information; according to the position information of time-frequency resources, determining N time-frequency resources for transmitting direct services in the N time-frequency resources, the time-frequency resources being in one-to-one correspondence with the resource pools; and allocating the obtained N time-frequency resources to the direct services corresponding to target groups. The method and device can transmit the direct services to other target groups in the process of transmitting the direct services to one target group, thereby reducing time delay of transmission of the direct services.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a time-frequency resource allocation method and device. Background technique [0002] Device to Device (D2D) communication, also known as direct communication, can directly perform short-distance transmission between two peer devices under the control of the network without passing through the base station, allowing terminals to pass through The technology of multiplexing cell radio resources for direct communication; it can also be a technology for direct communication between two peer-to-peer devices using pre-configured radio resources without being under the control of the network. [0003] The D2D communication based on the cellular network is called Proximity Service (Proximity Service, ProSe). In the existing LTE protocol, a user terminal (User Equipment, UE) A and a user terminal B can directly communicate through a PC5 interface. [0004] When performing d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W72/10H04W4/00
CPCH04W4/70H04W72/0446H04W72/56
Inventor 邓云
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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