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Method and device for distributing RBGs (resource block groups) in LTE (long term evolution)

A resource allocation and long-term evolution technology, applied in wireless communication, electrical components, etc., can solve problems such as poor signal quality, affecting system performance, and LTE system cannot improve anti-fading performance, so as to achieve the effect of improving anti-fading performance and improving performance

Inactive Publication Date: 2012-05-09
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the above-mentioned method of allocating RBGs, the RBGs of time slot 1 and time slot 2 are allocated in pairs, so the eNodeB cannot flexibly allocate the RBGs for the two time slots in each common subframe according to the signal quality of the CQI information. Allocate RBGs in time slots, so that the signal quality will be good when the specified RBG is used in one time slot, and the signal quality will be poor when the specified RGB resources are used in another time slot, so that once the signal fades, the Can affect the quality of the received signal in timeslots with poor signal quality, thereby affecting system performance
[0006] It can be seen that in the current existing LTE system, the eNodeB allocates RBGs for any terminal managed by it, because it is impossible to flexibly allocate RBGs for two time slots according to the different signal quality conditions of the two time slots in a common subframe, resulting in LTE The system cannot improve the anti-fading performance, thereby affecting the performance of the entire system

Method used

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  • Method and device for distributing RBGs (resource block groups) in LTE (long term evolution)
  • Method and device for distributing RBGs (resource block groups) in LTE (long term evolution)
  • Method and device for distributing RBGs (resource block groups) in LTE (long term evolution)

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Embodiment 1

[0063] Embodiment 1, assuming that all terminals managed by the eNodeB are improved to terminals capable of demodulating the new DCI format, the eNodeB adopts method 1 to set the new DCI format, the terminal that sends the CQI information is terminal 1, and the transmission mode of terminal 1 is 2, then implementation The method for allocating RBGs in the LTE system of the present invention is as follows: figure 2 shown, including the following steps:

[0064] Step 201: The eNodeB adopts the first method to set a new DCI format.

[0065] Step 202: The eNodeB determines that the new DCI format corresponding to the terminal 1 is the new DCI 1a format according to the transmission mode of the terminal 1 managed by the eNodeB being 2.

[0066] Here, the transmission mode of the terminal is a parameter of the terminal managed by the eNodeB saved by itself, and the method for the eNodeB to obtain the transmission mode of the terminal is an existing technology, and will not be desc...

Embodiment 2

[0070] Embodiment 2, assuming that most of the terminals currently managed by the eNodeB cannot be transformed into terminals that demodulate the new DCI format, the eNodeB uses method 2 to set the new DCI format to DCI 7, the transmission mode corresponding to DCI 7 is 12, and the terminal that sends CQI information In order to be able to demodulate terminal two in DCI 7 format, the transmission mode of terminal two is 12, then the method for allocating RBG in the LTE system of the present invention is implemented as follows image 3 shown, including the following steps:

[0071] Step 301: The eNodeB adopts the second method to set the new DCI format as DCI 7 format, and defines the corresponding transmission mode as transmission mode 12.

[0072] Step 302: The eNodeB determines that the new DCI format corresponding to the terminal 2 is the DCI 7 format according to the transmission mode of the terminal 2 managed by the eNodeB is 12.

[0073] Step 303: The eNodeB judges whet...

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Abstract

The invention discloses a method for distributing RBGs (resource block groups) in an LTE (long term evolution). The method comprises the following steps that: RBGs in a time slot 1 and / or time slot 2 are distributed for a terminal sending CQI (channel quality indicator) information, according to the received CQI information and recorded RBG use conditions, and the RBG distribution result is compiled in DCI (downlink control information) in a new DCI form. The invention also discloses a device for distributing RBGs in the LTE. According to the invention, RBGs are respectively distributed for two time slots of a common frame according to the signal conditions of the two time slots in the common frame, so as to improve the anti-fading property of the LTE, thereby further enhancing the performance of the whole system.

Description

technical field [0001] The present invention relates to a resource allocation technology in a Long Term Evolution (LTE, Long Term Evolution) system in the field of wireless communication, in particular to a method and device for allocating a Resource Block Group (RBG, Resource Block Group) in an LTE system. Background technique [0002] The LTE project in the 3rd Generation Partnership Project (3GPP, The 3rd Generation Partnership Project) in the field of wireless communication is the evolution of 3G, which improves and enhances the air access technology of 3G, and adopts Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) / Frequency Division Multiple Access (FDMA, Frequency Division Multiple Access) as the core technology. [0003] In LTE technology, the scheduling unit is a subframe, that is, 1ms. The subframe has two structures: ordinary subframe and special subframe. The ordinary subframe includes two time slots, and each time slo...

Claims

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Application Information

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IPC IPC(8): H04W72/08H04W72/04
CPCH04W72/08H04W72/54
Inventor 黄志强谢忠时
Owner ZTE CORP
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