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Reference signal transmission method, base station, and user equipment

A technology of reference signal and transmission method, which is applied in the directions of pilot signal distribution, wireless communication, multiple use of transmission path, etc., and can solve the problem of low utilization rate of time-frequency resources

Active Publication Date: 2021-10-01
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present application provides a method for sending a reference signal to alleviate the problem of low utilization of time-frequency resources in the prior art

Method used

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  • Reference signal transmission method, base station, and user equipment
  • Reference signal transmission method, base station, and user equipment
  • Reference signal transmission method, base station, and user equipment

Examples

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example 1

[0162] Example 1: Time-frequency resource information is indicated by 10 bits: 1010 0100 01. Among them, the lower 2 bits (from the right) indicate the number of adjacent cells, which is 01 in this example, indicating that only the time-frequency resource information of one adjacent cell is carried. The 3rd to 6th bits of 0100 indicate the position in the time domain of the RE configured for the adjacent cell 1 to send the downlink reference signal, and the 7th to 10th bits indicate the position of the RE configured for the adjacent cell 1 to send the downlink reference signal in the frequency domain Location.

example 2

[0163] Example 2: Indicate through 18-bit time-frequency resource information: 1010 0100 1011 1100 10. The lower 2 bits indicate the number of adjacent cells, which is 10 in this example, indicating that time-frequency resource information of two adjacent cells is carried. Among them, 3~6 bits indicate the position in the time domain of the RE configured by the adjacent cell 1 to send the downlink reference signal, 7~10 bits indicate the position in the time domain of the RE configured by the adjacent cell 2 to send the downlink reference signal, and 11~ The 14 bits indicate the position in the frequency domain of the RE configured for the adjacent cell 1 to send the downlink reference signal, and the 15-18 bits indicate the position in the frequency domain of the RE configured for the adjacent cell 2 to send the downlink reference signal.

[0164] Step 742, the base station inputs the encoding result into a shift register to obtain a pseudo-random sequence.

[0165] Step 743...

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Abstract

The present application discloses a method for sending a reference signal, a base station and user equipment. It is used to alleviate the problem of low utilization rate of time-frequency resources in the prior art. The method includes: the base station receives the measurement result of the downlink reference signal of the serving cell of the UE sent by the UE, the base station is a base station to which the serving cell belongs; the base station determines whether a predetermined handover preparation is satisfied according to the measurement result Condition: if the predetermined handover preparation condition is met, the base station notifies the adjacent cell to use the time-frequency resource configured by the base station to send a downlink reference signal to the UE, and the adjacent cell does not need to send a downlink reference signal to the UE before being notified reference signal, and the base station notifies the UE to use the time-frequency resource configured by the base station to receive the downlink reference signal.

Description

technical field [0001] The present application relates to the field of computer and communication technologies, and in particular to a method for sending a reference signal, a base station, user equipment (English: User Equipment, UE) and a network system. Background technique [0002] Mobility management usually refers to the management of mobile terminal location information, security and business continuity, and then provides guarantee for the application of various network services. A typical scenario of mobility management is that when a UE in a radio resource control connected (English: Radio Resource Control_CONNECTED, RRC_CONNECTED) state moves between cells, it is necessary to perform cell handover in time to avoid loss of connection. Measurement based on reference signals is a basic action in the cell handover process. The UE measures the reference signal received power (English: Reference Signal Receiving Power, RSRP) of the reference signal sent by each cell at ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00H04W72/04
CPCH04L5/0048H04W72/0446H04W72/23H04W72/04H04L5/0094H04L5/0007H04L5/0035H04W36/0077H04W72/044
Inventor 袁璞罗俊刘瑾
Owner HUAWEI TECH CO LTD