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Power allocation method and device in multiple input multiple output open loop region

A power configuration and multiple output technology, applied in the field of communication, can solve the problems of not being able to control the total transmission power of the open-loop area, and the level of inter-cell interference, so as to achieve the effect of guaranteeing the quality of service

Inactive Publication Date: 2012-03-14
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The power control in the open-loop area is no different from the power control method outside the open-loop area, that is, the transmit power of the resource occupied by the open-loop area is still directly related to the channel condition and adjusted according to the channel condition of the terminal. Therefore, and It cannot control the total transmission power in the open-loop area, nor can it achieve the purpose of controlling the interference level between cells through the MIMO open-loop area

Method used

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  • Power allocation method and device in multiple input multiple output open loop region
  • Power allocation method and device in multiple input multiple output open loop region
  • Power allocation method and device in multiple input multiple output open loop region

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Embodiment 1

[0064] figure 2 In , according to the conditions of the current system, the available subcarriers are mapped to one frequency partition, and in order to control the interference between different cells, an open-loop area is set on resource type 2. To enable the open-loop region, set a signaling OL RegionEnable in the broadcast control information sent by the base station to the terminal to notify the terminal whether the resource allocation supports the use of the open-loop region, as shown in Table 1.1.

[0065] Table 1.1

[0066]

[0067]

[0068] If OL Region Enable=1, it means that the open-loop region can be supported, but the open-loop region does not necessarily exist. The size of the open-loop area can be notified through other broadcast control information. If it is greater than 0, it is considered that the open-loop area of ​​this size is activated, as shown in Table 1.2.

[0069] Table 1.2

[0070] describe

Size (bits)

Remark

OL R...

Embodiment 2

[0081] If the entire available subcarriers of the base station are mapped to 4 frequency partitions, if the frequency partition F i (00 The power Boosted value is 3dB, -3dB, -3dB, namely:

[0082] Δ F0 = 0dB, Δ F1 = 3dB, Δ F2 =-3dB, Δ F3 =-3dB.

[0083] If Pout=Pmax=43dBW, if still taking 10MHz bandwidth as an example, there are 864 available subcarriers, and the size of each frequency partition is the same, then the subcarrier power in frequency partition 0 (assuming pilot subcarrier power and data subcarrier power Equal, only for example, in other embodiments, also can not be equal) the power is:

[0084] 10 ( P max 10 ) 216 + 216 · 10 ( ...

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Abstract

The invention discloses a power allocation method and a power allocation device in a multiple input multiple output open loop region. The method comprises that: when the available subcarriers of a base station are mapped to F frequency subregions, and a multiple input multiple output (MIMO) open loop region is set in the ith frequency subregion, then the data subcarrier power p2 of the MIMO open loop region in the ith frequency subregion is in accordance with the following condition: Pout is less than or equal to Pmax; wherein detaFi is power difference between a frequency subregion Fi and a frequency subregion F0, i is more than or equal to 0 and less than or equal to F, and the F is more than or equal to 1, the Pmax is the maximum value of the total transmission power of each orthogonal frequency division multiplexing (OFDM) symbol, the Pout is the total actual transmission power of each OFDM symbol; Nused is available subcarrier quantity in each OFDM symbol; and deta1p and deta2p are power constraint values, and are more than or equal to zero. The invention also provides a power allocation device in the multiple input multiple output open loop region. By the method and the device, the interference of the whole network can be reduced to a certain level so that the service quality of cell-edge users and the frequency spectrum efficiency of the whole network are ensured.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a method for configuring power in a multiple input multiple output (Multiple Input Multiple Output, MIMO) open loop region (Open Loop Region, OLRegion) in a communication system. Background technique [0002] In a wireless communication system, a base station usually refers to a radio transceiver station that can transmit information to a terminal through a mobile communication switching center in a certain radio coverage area. In practical applications, the base station can communicate with the terminal through uplink / downlink, wherein the downlink refers to the transmission direction from the base station to the terminal, and the uplink refers to the transmission direction from the terminal to the base station. In addition, multiple terminals can simultaneously transmit data to the base station through an uplink, and can also receive data from the base station through a downl...

Claims

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Application Information

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IPC IPC(8): H04W52/10H04L27/26
CPCH04W52/42H04L5/0023H04L5/0039H04L5/0044H04L5/0069H04L5/0073
Inventor 关艳峰宁丁陈宪明方惠英鲁照华
Owner ZTE CORP
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