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Scheduling method, system and device in carrier aggregation system

A technology of carrier aggregation and scheduling method, which is applied in the direction of electrical components, wireless communication, etc., can solve the problems that the terminal cannot be realized, the cost is high, and the requirements for coexistence between terminals cannot be met, so as to ensure the performance and priority of information transmission, Effects of reducing inter-carrier interference and ensuring transmission performance and priority

Active Publication Date: 2015-11-25
CHINA MOBILE COMM GRP CO LTD
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AI Technical Summary

Problems solved by technology

If the frequency interval between the A and B frequency bands is far enough, it is possible to meet the required attenuation requirements if a high-cost dielectric filter is used, but the cost is high
[0007] For the terminal, assuming that the receiver sensitivity loss is 3dB as the evaluation criterion, the required attenuation is 73dB (the bandwidth is 20MHz, the transmit power is 23dBm, the receiver noise figure is 9dB, the adjacent frequency leakage ratio is 30dB, and the minimum coupling between the two antennas of the terminal antenna is If the loss is 12dB, the required attenuation is 23-13-(-174+60+9)-30-12=73dB), which is unrealizable for the terminal, because the commonly used SAW filter is used, and the terminal side is out-of-band 20MHz The external attenuation is only about 30-40dB, which cannot meet the requirements for coexistence between terminals

Method used

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  • Scheduling method, system and device in carrier aggregation system
  • Scheduling method, system and device in carrier aggregation system
  • Scheduling method, system and device in carrier aggregation system

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Embodiment Construction

[0043] The present invention proposes that in the carrier aggregation system, each terminal is configured with a primary carrier (Primarycell, Pcell) and a secondary carrier (Secondarycell, Scell), where there is generally one Pcell and several Scells. The important control information is in the Pcell. Because the information transmitted on the Pcell is more important, it is mainly to ensure the transmission quality on the Pcell. When the time slot directions on the primary and secondary carriers of the terminal at the current scheduling moment are different, the network side equipment will schedule according to the terminal’s Pcell. In case, the scheduling of Scell ​​is determined to avoid the transmission of the terminal on the secondary carrier from interfering with the reception on the primary carrier, or the transmission on the primary carrier from interfering with the reception on the secondary carrier.

[0044] In the carrier aggregation system, for a terminal, the system w...

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Abstract

The embodiment of the invention discloses a scheduling method, system and equipment in a carrier aggregation system. The scheduling method comprises the following steps of: configuring a main carrier and an auxiliary carrier for a terminal; and scheduling the auxiliary carrier of the terminal according to the condition of scheduling the main carrier by the terminal. According to the scheduling method, system and equipment disclosed by the invention, interference among different carriers in the terminal in the carrier aggregation system is effectively reduced on the premise of ensuring the system throughput in the carrier aggregation system.

Description

Technical field [0001] The present invention relates to mobile communication technology, and in particular to a scheduling method, system and equipment in a carrier aggregation system. Background technique [0002] The current carrier aggregation system mainly considers three carrier aggregation scenarios, one is continuous carrier aggregation in the same frequency band, the other is discontinuous carrier aggregation in the same frequency band, and the other is discontinuous carrier aggregation between different frequency bands. [0003] figure 1 It is a schematic diagram of the frequency bands occupied by each carrier in the current three carrier aggregation scenarios. [0004] In continuous carrier aggregation and discontinuous carrier aggregation in the same frequency band, the uplink and downlink timeslot configurations on each carrier should be the same, otherwise serious inter-base station interference and inter-terminal interference will occur. For discontinuous carrier aggre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/12
Inventor 李男
Owner CHINA MOBILE COMM GRP CO LTD
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