Transmission mode switching method and base station
A technology of transmission mode and base station, applied in the field of communication, can solve the problem of not being able to configure 1-port TM1 mode at the same time, and achieve the effect of reducing transmission pilot interference
Active Publication Date: 2019-01-15
HUAWEI TECH CO LTD
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[0006] After the transmission mode of the cell is determined, the number of CRS ports in the cell is fixed. For example, one CRS port is configured when the transmission mode of the cell is TM1, or two CRS ports are configured when the transmission mode of the cell is TM3. Therefore, in The 1-port TM1 mode and the 2-port TM3 mode cannot be configured at the same time in the cell, but only one of them can be configured, so that no matter which mode is used, the user equipment in the center area and edge area of the cell cannot achieve the best transmission performance at the same time
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[0059] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0060] In order to facilitate the description of the embodiment, the following briefly introduces the application scenarios of the embodiment of the present invention. see figure 1 , the scenario is a multi-antenna common cell, the number of antennas can be 2, 4, and 8, and the cell 10 includes a central area 20 and an edge area 30 . It has been pointed out in the background art that adopting the N-port transmission mode in the central area 20 can enable the user equipment to obtain multi-antenna spatial multiplexing gain, and adopting the 1-port transmission mode in the edge area 30 can reduce pilot interference. Therefore, in order to maximize the transmission efficiency, it is necessary to design a transmission scheme: when the use...
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The present invention relates to the field of communications. Disclosed are a transmission mode switching method and base station, the method comprising: a base station acquires a current transmission mode of a user equipment(UE), the transmission mode comprising a single-port transmission mode and an N-port transmission mode, N being equal to the number of antennas of a cell where the UE is located; the base station detects a position of the UE in the cell, the position comprising a central area and an edge area; and the base station switches the transmission mode of the UE to the N-port transmission mode, configures N CSI-RS ports for the UE, and notifies the UE of the N-port transmission mode and the N CSI-RS ports when the UE is operating in the single-port transmission mode and is located in the central area, or the base station switches the transmission mode of the UE to the single-port transmission mode and notifies the UE of the single-port transmission mode when the UE is operating in the N-port transmission mode and is located in the edge area.
Description
technical field [0001] The invention relates to the communication field, in particular to a transmission mode switching method and a base station. Background technique [0002] With the gradual increase in the number of mobile users and the escalation of mobile communication traffic, the 3rd Generation Partnership Project (English: 3rd Generation Partnership Project, referred to as: 3GPP) proposed the long-term evolution (English: Long Term Evolution , referred to as: LTE) system, which will be used as the standard for future mobile communications. The standard protocol of the LTE system stipulates multiple transmission modes (marked as TM, including TM1 to TM9) that can be adopted by the Physical Downlink Shared Channel (English: Physical Downlink Shared Channel, PDSCH for short) of the LTE system, and each transmission mode The adopted MIMO methods are also different, and some transmission modes also include multiple MIMO methods. For example, TM1 adopts a single-port MI...
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IPC IPC(8): H04W36/00
CPCH04W36/0005
Inventor 胡玓秀徐立朱孝龙
Owner HUAWEI TECH CO LTD