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Determining method of launch power, base station and terminal thereof

A technology of transmitting power and determining method, applied in the field of communication, can solve problems such as affecting system performance, inflexible control method of transmitting power, etc., to achieve the effect of improving system performance and flexible control

Active Publication Date: 2009-09-09
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The present invention is proposed for the problem that the control method of terminal transmission power is inflexible and affects system performance. Therefore, the main purpose of the present invention is to provide a transmission power determination scheme to solve at least one of the above problems

Method used

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  • Determining method of launch power, base station and terminal thereof
  • Determining method of launch power, base station and terminal thereof
  • Determining method of launch power, base station and terminal thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0062] This embodiment describes that different compensation factors are used in different frequency bands according to IoT.

[0063] figure 2 It is a schematic diagram of a method for determining transmit power according to the tolerable IoT of different frequency sets according to Embodiment 1 of the present invention. Such as figure 2 As shown, each base station sets the tolerable IoT corresponding to different frequency sets (here four frequency sets A, B, C, and D are taken as examples) according to the received IoT indications from neighboring base stations. A set of relatively high IoT frequencies can be tolerated, which means that the inter-cell interference suffered by adjacent cells on this frequency set is very small. Therefore, higher power can be used for transmission, and the compensation factor set for this frequency set is correspondingly larger. IoT sets a smaller compensation factor for lower frequency sets. exist figure 2 in, α 1A 、α 1B 、α 1C and a...

Embodiment 2

[0066] This embodiment describes that different path loss compensation factors are allocated according to the geographical environment.

[0067] image 3 It is a schematic diagram of a method for determining transmit power according to different geographical environments of a terminal according to Embodiment 2 of the present invention. Such as image 3 As shown, the coverage area of ​​the base station (the base station here also refers to a cell) is divided into multiple layers. Here, the fourth layer is taken as an example. Terminals 1, 2, 3, and 4 are located on the first, second, third, and fourth floors of the base station, respectively. . When FFR is not used, all terminals in the base station can use any frequency band of the system bandwidth. At this time, different path loss compensation factors are set according to the degree of interference caused by terminals in each layer of the base station to adjacent cells, and the path loss compensation factors from the firs...

Embodiment 3

[0070] This embodiment describes that different path loss compensation factors are allocated according to whether the terminal is attached to the relay.

[0071] Figure 4 It is a schematic diagram of a method for determining transmit power when a relay exists in a cell according to Embodiment 3 of the present invention. Such as Figure 4 As shown, terminal 1 and terminal 2 are terminals attached to relay 1, and terminal 3 is a terminal attached to relay 2. Terminal 4 and Terminal 5 are not attached to any relay terminal. A terminal attached to a relay needs to establish a connection with the base station through its attached relay, while a terminal not attached to the relay directly establishes a connection with the base station. The terminals attached to the relay (terminal 1, 2 and 3) are very close to the relay (relay 1 and 2), where terminal 1 and 2 are very close to relay 1, and terminal 3 is very close to relay 2, therefore, The uplink communication with the relay c...

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Abstract

The invention discloses a determining method of launch power, a base station and terminals thereof. In the method, the base station determines specific power control parameters corresponding to each terminal or each group of the terminals, wherein, the specific power control parameters comprise specific compensating factors; the base station sends the determined specific power control parameters to the corresponding terminals, and each terminal determines the launching power according to the received specific power control parameters. The flexibility of the launch power of the control terminals is improved, and the system performance is improved.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a method for determining transmission power, a base station and a terminal. Background technique [0002] Inter-cell or intra-cell co-channel interference is an inherent problem in wireless cellular communication systems. The traditional solution is to use frequency reuse technology. For example, according to certain rules, several cells are combined into a cluster. Different frequency resources are used between different cells, and the same frequency resources are used between different clusters. The reciprocal of the number of cells in a cluster is defined as the frequency reuse factor, and its value can be 1, 1 / 3, 1 / 7 . However, with the continuous evolution of the cellular communication system, the system requires higher and higher spectral efficiency, which requires a relatively high reuse factor, for example, a frequency reuse factor of 1 is required. In order to furthe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/14H04W52/18
Inventor 薛妍鲁照华郝鹏郁光辉汪孙节
Owner ZTE CORP
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