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Dynamic channel distributing method adaptable for asymmetric high and low line service distribution

A technology of dynamic channel allocation and service distribution, applied in wireless communication, multiplexing communication, code division multiplexing system, etc., can solve problems such as affecting the performance of TDD system and uplink transmission interference in adjacent cells.

Inactive Publication Date: 2006-01-11
BEIJING SAMSUNG TELECOM R&D CENT +1
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Problems solved by technology

Multi-cell uplink and downlink interference is manifested when the base station of a certain cell is in the downlink (base station to mobile station) transmission phase, and the adjacent cell is in the uplink (mobile station to base station) transmission phase. The uplink transmission will cause serious interference, which will seriously affect the performance of TDD system

Method used

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  • Dynamic channel distributing method adaptable for asymmetric high and low line service distribution
  • Dynamic channel distributing method adaptable for asymmetric high and low line service distribution
  • Dynamic channel distributing method adaptable for asymmetric high and low line service distribution

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Embodiment

[0029] Taking the VSFH-OTFCDM system as an example, the present invention proposes a dynamic channel allocation method under the time division duplex mode (TDD) combining CDMA technology and multi-carrier modulation technology. The dynamic channel allocation method adapted to the distribution of asymmetric uplink and downlink services proposed by the present invention is based on the fixed-length frame structure of variable uplink and downlink time slots. Figure 2(a) and Figure 2(b) respectively show two typical fixed-length frame structures of variable uplink and downlink time slots in TDD mode, including uplink and downlink time slots and guard bands 202 between uplink and downlink time slots . Wherein, the uplink time slots are composed of fixed uplink time slots 204 and variable uplink time slots 206 , and the downlink time slots are composed of variable downlink time slots 208 and fixed downlink time slots 210 . The time slot resources in the variable uplink time slot an...

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Abstract

A dynamic channel distribution method for the asymmetric up and down services suitable for CDMA access system includes: in a time division duplex system of a fixed-length frame based on variable up-and-down time slot, channel resources are formed containing the variable time slot or time frequency zones and code channels, the network decides if re-allocating the resources information. When the time slot is decided to be re-distributed, the system divides shared time slots, time frequency zone, prior time slot or prior time frequency zones for primaries needing them and each primary determines itself if the prior time slot or prior time frequency zones are used in the transmission of up or down line.

Description

technical field [0001] The invention relates to a resource allocation technology, in particular to a channel resource dynamic allocation method under the asymmetric uplink and downlink service distribution of a multi-cell cellular system. Background technique [0002] In recent years, with the rapid growth of the number of mobile users and the application of multimedia technology, the demand for network resources including bandwidth in the wireless communication process has been greatly increased. How to effectively and reasonably allocate limited network resources including bandwidth, make it suitable for the distribution of services in the network, reduce inter-channel interference, and improve system utilization has become a research hotspot in resource allocation in wireless networks. [0003] Usually, in a wireless communication process, through channel division, wireless spectrum resources are divided into multiple non-interference channels, and these channels can be a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/36H04J13/02H04W16/10
Inventor 廖敬一王海赵英权朴东植
Owner BEIJING SAMSUNG TELECOM R&D CENT
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