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Grouping method in time division multiple access system

A technology of time division multiple access and grouping method, applied in the field of mobile communication, can solve problems such as reducing spectrum utilization rate, and achieve the effects of improving spectrum utilization rate, high system capacity, and high resource utilization

Inactive Publication Date: 2007-07-25
HUAWEI TECH CO LTD
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Problems solved by technology

However, the use of different frequencies in different cells will obviously reduce the spectrum utilization efficiency significantly

Method used

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  • Grouping method in time division multiple access system
  • Grouping method in time division multiple access system
  • Grouping method in time division multiple access system

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Embodiment Construction

[0032] In order to make the object, technical solution and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0033] The main idea of ​​the present invention is to consider the difference in user signal reception quality, especially the difference in interference between cell border users and cell center users, and use less coding protection and use high-speed data for users who are less interfered. Users with greater interference can use higher anti-interference protection and use lower data transmission, so that different cells can use the same frequency, and will not cause intra-cell interference and significant inter-cell interference, thereby improving TDMA system Spectrum utilization rate, higher resource utilization and system capacity than traditional TDMA system and CDMA system. In fact, mobile terminal users located at cell boundari...

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Abstract

The grouping method includes steps: grouping all time slots in TDMA frame structure, and determining relative high or low qualities for receiving signal of mobile user, and assigning mobile users with same or near qualities for receiving signal to same time slot group; using less coding protection and / or using high data transmission for time slot containing mobile users with higher quality of receiving signal; using high antiinterference protection and / or using low data transmission for time slot containing mobile users with lower quality of receiving signal. The invention raises use ratio of frequency spectrum of TDMA system, as well as obtains higher resource utilization and system capacity than those of traditional TDMA system, and CDMA system.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, and more specifically, the present invention relates to a grouping method in a Time Division Multiple Access (TDMA) system. Background technique [0002] In a cellular mobile communication system, interference between users will limit the capacity of the communication system. These interferences mainly include intra-cell interference and inter-cell interference. Intra-cell interference refers to interference between different users in the same cell, while inter-cell interference refers to interference between users in different cells. Both intra-cell and inter-cell interference will seriously reduce the capacity of the communication system. [0003] In various current cellular mobile communication systems, TDMA and Code Division Multiple Access (CDMA) are relatively common multiple access methods. In a CDMA system, all adjacent cells use the same frequency to obtain higher...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/26H04J3/00
CPCH04B7/2656H04W72/085H04W72/542
Inventor 李斌
Owner HUAWEI TECH CO LTD
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