A method, device and system for transmitting uplink control information
A technology for controlling information and transmission methods, applied in wireless communication, electrical components, etc., can solve the problems of unfixed ratio, uplink and downlink interference, affecting downlink transmission, etc., and achieve the effect of simplifying timing design
Active Publication Date: 2020-09-25
CHINA MOBILE COMM GRP CO LTD
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Problems solved by technology
Since the uplink and downlink ratio is not fixed, when the user equipment (User Equipment, UE) feeds back the uplink acknowledgment (Acknowledgment, ACK) / negative acknowledgment (Negative Acknowledgment, NACK), it needs to wait for an uplink subframe to appear, and the uplink subframe The appearance of the frame is uncertain, so the waiting time of the UE is also uncertain, which leads to the UE needing more storage space for buffering data, or the downlink transmission is affected because the ACK / NACK cannot be reported in time
[0004] In addition, if adjacent cells adopt different subframe configurations, severe uplink and downlink interference may occur on subframes with different configurations
like figure 1 As shown, D represents the downlink subframe, and U represents the uplink subframe. When the subframe configurations of the two cells are different, use figure 1 Take subframe 3 as an example, the subframe 3 of cell 1 is an uplink subframe, and the subframe 3 of cell 2 is a downlink subframe, then the downlink signal of cell 2 will cause serious interference to the uplink signal of cell 1
Method used
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[0091] In order to solve the problems existing in the prior art, an embodiment of the present invention provides a transmission scheme of uplink control information. In this technical solution, the user equipment determines subframe configuration information, and determines N first subframes from the subframe set indicated by the subframe configuration information, and the first subframe is in the subframe set indicated by the subframe configuration information flexible subframe and / or uplink subframe, and then send uplink control information in the first subframe. Through the technical solution of the embodiment of the present invention, the uplink control information is fixedly sent on the first subframe, which simplifies the HARQ timing design, and when two adjacent cells adopt different subframe configurations, the two cells send the uplink control information All are the first subframe, so there is no interference between uplink and downlink.
[0092] Wherein, the "base ...
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The embodiment of the present invention discloses a transmission method, device and system for uplink control information, which can not only simplify HARQ timing design, but also prevent uplink control information from being interfered by downlink data from adjacent cells. The method includes: the user equipment determines subframe configuration information; wherein, the subframe configuration information includes: position information of downlink subframes, flexible subframes and / or uplink subframes in a subframe set; from the subframe configuration information In the indicated subframe set, N first subframes are determined; wherein, the first subframe is a flexible subframe and / or an uplink subframe in the subframe set indicated by the subframe configuration information; wherein , N is a positive integer; sending uplink control information on the first subframe.
Description
technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method, device and system for transmitting uplink control information. Background technique [0002] In a Long Term Evolution (LTE) time division duplexing (Time Division Duplexing, TDD) system, each radio frame includes 10 subframes, each subframe has a length of 1 millisecond, and uplink and downlink use different subframes respectively. In order to adapt to different application scenarios, the LTE TDD system can use different uplink and downlink subframe ratios according to business conditions to meet different uplink and downlink asymmetric service requirements. However, in an ultra-dense network, the density of base stations is very high, and the number of users served by each small base station is small, so the ratio of uplink and downlink business loads in each cell changes rapidly, and the static or semi-static uplink and downlink subframe ratio ...
Claims
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IPC IPC(8): H04W72/04H04W72/12
CPCH04W72/0446H04W72/21
Inventor 夏亮韩璐王锐胡丽洁
Owner CHINA MOBILE COMM GRP CO LTD