Reference signal transmission method and apparatus, and reference signal reception method and apparatus
A technology of reference signal and transmission method, applied in the field of communication, can solve problems such as large performance loss, inability to switch antenna ports in groups, and inability to obtain base stations effectively, and achieve the effect of improving performance and improving accuracy
Pending Publication Date: 2018-10-09
HUAWEI TECH CO LTD
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Problems solved by technology
[0006] When the UE has multiple antennas and these antennas are located on different panels, the existing technology cannot dynamically perform packet switching of antenna ports according to different transmission requirements, and thus cannot perform fast and effective channel quality measurement on the entire system bandwidth
For example, in a Time Division Duplexing (TDD) system, the UE sends SRS signals to the base station to obtain uplink and / or downlink channel quality information. If there are P (P>=1) transmit antennas in the UE, but only Q(Q<P) PAs, since the UE does not support P antennas to send SRS based on Q antenna port groups in turn, the base station cannot quickly and effectively obtain the channels between all the transmitting and receiving antennas. Therefore, the performance Big loss
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[0059] The technical solutions in the embodiments of the present application are clearly and completely described below in conjunction with the drawings in the embodiments of the present application.
[0060] Various embodiments of the present application are applied to a communication system composed of at least one first network device serving as a sending device and at least one second network device serving as a receiving device. The sending device and the receiving device may be any sending device and receiving device that perform data transmission in a wireless manner. The sending device and the receiving device can be any kind of device with wireless transceiver function, including but not limited to: base station (NodeB), evolved base station (eNodeB), base station in the fifth generation (the fifth generation, 5G) communication system, Base stations or network devices in future communication systems, access nodes, wireless relay nodes, wireless backhaul nodes, and use...
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The application discloses a reference signal transmission method and apparatus, and a reference signal reception method and apparatus. The transmission method includes steps: a second network device receives first grouping information of a reference signal port from a first network device, wherein the first grouping information comprises information of N groups of reference signal ports, and N isa positive integer greater than or equal to 1; determining the kth group of reference signal antenna ports from the N groups of reference signal ports, wherein k is a positive integer greater than orequal to 1 and less than or equal to N; and transmitting reference signals on the kth group of reference signal antenna ports. Rapid switching of the reference signal antenna ports of the second network device is realized, adaptive uplink data transmission can be realized, and the transmitted reference signals traverse the whole measuring bandwidth as soon as possible so that the accuracy of channel measurement and the transmission efficiency of uplink data are improved.
Description
technical field [0001] The present application relates to the technical field of communications, and in particular to a reference signal sending method, receiving method and device. Background technique [0002] In the Long Term Evolution (LTE) / LTE-advanced (LTE-A) system of the 3rd Generation Partnership Project (3GPP), the downlink multiple access method usually adopts the normal Cross frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA) mode. The downlink resources of the system are divided into multiple Orthogonal Frequency Division Multiple (OFDM) symbols from the time point of view, and divided into several subcarriers from the frequency point of view. [0003] Generally, a normal uplink or downlink subframe contains two slots, and each slot includes 7 OFDM symbols, so a normal uplink or downlink subframe contains 14 OFDM symbols in total, and the system Also defines the physical resource block (Physical Resource Block, PRB) size,...
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Patent Timeline
Login to View More IPC IPC(8): H04L5/00
CPCH04L5/0048H04L5/0092H04L5/0007H04B7/0404H04B7/0456H04B7/0478H04L5/0051H04L25/0226H04W80/08H04W72/23
Inventor 刘建琴
Owner HUAWEI TECH CO LTD