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Method and device for sending sounding reference signal

A technology for sounding reference signals and channel sounding, which is applied in the field of wireless communication and can solve the problem that UE cannot detect multiple cells

Active Publication Date: 2010-09-29
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a method and equipment for sending a sounding reference signal to solve the problem in the prior art that a UE cannot simultaneously detect multiple cells

Method used

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  • Method and device for sending sounding reference signal
  • Method and device for sending sounding reference signal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0136] Figure 7 It is a schematic diagram of a detection implementation process with the same SRS resources in each cell. As shown in the figure, this embodiment describes an implementation manner in which the SRS resources allocated to the UE are the same SRS resources in each cell.

[0137] In step 701, the UE and the network determine a set C of detection cells.

[0138] For example, the UE measures the strength of the pilot signals of the surrounding cells and / or detects the delay of the synchronization signal, and feeds it back to the network side; Delay, or consider both to determine a detection cell set C, and notify the information of the set C to the UE. Another implementation is that the UE determines the detection cell set C according to the average value of the pilot signal strength within a period of time or the delay of the synchronization signal, or both, and then notifies the network of the information of the set C. Set C is a slowly changing set that is upd...

Embodiment 2

[0148] Figure 8 A schematic diagram of a detection implementation process for determining SRS resources for each cell, as shown in the figure, this embodiment describes an implementation manner in which the SRS resources allocated to the UE are the SRS resources determined for the UE by each cell.

[0149] Step 801, the UE and the network determine a set C of detection cells.

[0150] In step 802, the base station to which the cell where the UE resides notifies the base stations to which other cells in the set C belong to the relevant information of the UE.

[0151] The related information includes related parameters of the SRS sequence to be used by the UE, such as the base sequence used, the transmit power, and the like.

[0152] Step 803, the cells in the set C allocate resources for the UE for uplink SRS respectively.

[0153] Step 804, the network notifies the UE of the resource location and related parameters for sending the SRS for each cell through high layer signal...

Embodiment 3

[0158] Figure 9 It is a schematic diagram of a detection implementation process in which SRS resource information is shared by each cell. As shown in the figure, this embodiment describes an implementation manner in which the SRS resources allocated to UE are SRS resources with resource information shared by each cell.

[0159] Step 901, the UE and the network determine a set C of detection cells.

[0160] In step 902, the base station to which the cell where the UE resides notifies the base stations to which other cells in the set C belong to the relevant information of the UE.

[0161] The related information includes related parameters of the SRS sequence to be used by the UE, such as the base sequence used, the transmit power, and the like.

[0162] Step 903, the base station to which the cell where the UE resides allocates resources for the UE for uplink SRS, and shares the allocated resource information with the base stations to which other cells in the set C belong; ...

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Abstract

The invention discloses a method and a device for sending a sounding reference signal. The method comprises the following steps of: allocating sounding reference signal resources for detecting each cell to user equipment in at least two cells of which uplink channels need to be detected by the user equipment; instructing the user equipment to send the sounding reference signal on the allocated sounding reference signal resources. The user equipment can detect the channels of a plurality of cells by using the method; and the method is used for multi-point cooperative transmission, can prevent the user equipment from feeding back the channel information of the plurality of cells, reduce the feedback expenses and improve the system performance.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a method and equipment for sending a sounding reference signal. Background technique [0002] The ITU (International Telecommunications Union, International Telecommunication Union) puts forward very strict requirements for the performance of the next generation mobile communication system IMT-A (International Mobile Telecommunications-Advanced). For example, the maximum system transmission bandwidth reaches 100MHz, the peak rate of uplink and downlink data transmission needs to reach 1Gbps and 500Mbps, and puts forward very high requirements for the system average spectral efficiency, especially the edge spectral efficiency. In order to meet the requirements of the new IMT-Advanced system, 3GPP (3rd Generation Partnership Proiect, the third generation mobile communication standardization organization) in its next-generation mobile cellular communication system LTE-A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W72/12H04W88/08H04B1/707H04L27/26
CPCH04L5/0035H04L5/0094H04W72/085H04L5/0053H04W72/542
Inventor 高秋彬缪德山潘学明沈祖康
Owner DATANG MOBILE COMM EQUIP CO LTD
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