A service scheduling method and device for a downlink subframe

Abstract

The embodiment of the invention provides a service scheduling method for a downlink subframe. The method comprises the following steps: when a downlink subframe to be scheduled is configured as a scheduling channel state information-reference signal CSI-RS, determining a first type of users sending the CSI-RS, and scheduling user data of the first type of users in the downlink subframe to be scheduled; after the user data of the first type of users are scheduled, if the downlink subframe to be scheduled has an idle physical resource block PRB, determining to not send the second type of users of the CSI-RS, and scheduling the user data of the second type of users in the idle PRB. In the embodiment of the invention, the downlink subframe to be scheduled configured to schedule the CSI-RS preferentially schedules the user data of the first type of users, thereby effectively ensuring that a R10 terminal can support 1-8 layers of parallel data transmission after a Tm9 feature is added to anLTE-A system, 8-stream downlink service transmission can be supported at most, and the functional application of up to 440 Mbps can be achieved by the downlink service peak rate on the theory.

Description

technical field [0001] The present application relates to the technical field of communications, and in particular to a downlink subframe service scheduling method and a downlink subframe service scheduling device. Background technique [0002] With the increasing demand for user data transmission, wireless communication has become a trend towards larger bandwidth, faster rate, and higher frequency efficiency. The purpose of introducing the downlink multi-antenna enhancement feature in LTE-A is to significantly increase the theoretical peak rate of the user's uplink and downlink, thereby further improving user experience and creating more value for users. [0003] The R10 protocol version downlink multi-antenna enhancement technology introduced by LTE-A is mainly reflected in three aspects: [0004] 1) Introduced a new antenna transmission mode TM9 (Transmission Mode 9, transmission mode 9), which supports parallel data transmission of layers 1-8; [0005] The background o...

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Problems solved by technology

[0012] However, for R8 / R9 users, since the user terminal does not support the R10 TM9 transmission mode, the terminal cannot identify and know the existence of the CSI-RS signal after connecting to the network, and the terminal cannot remove the CSI-RS signal during rate matching. The RE of the RS will demodulate the CSI-RS as a useful signal during decoding, which will cause performance degradation

The performance deterioration at this time mainly comes from two aspects. One is that the existence of CSI-RS will make the coding rate higher, and the other is that the terminal will use CSI-RS as a useful signal for scheduling processing of service data, thereby increasing the error probability. The latter The impact of business performance deterioration will be greater

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