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Method and device for configuring uplink reference signal of multipoint cooperative transmission

A multi-point coordination and reference signal technology, applied in transmission path sub-channel allocation, pilot signal allocation, wireless communication, etc., can solve problems such as interference, achieve enhanced accuracy, improve system signal performance, and reduce SRS signal interference Effect

Active Publication Date: 2013-01-02
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Correspondingly, the SRS of the CoMP UE in cell 2 may also be interfered by the SRS of the UE in cell 1

Method used

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  • Method and device for configuring uplink reference signal of multipoint cooperative transmission
  • Method and device for configuring uplink reference signal of multipoint cooperative transmission
  • Method and device for configuring uplink reference signal of multipoint cooperative transmission

Examples

Experimental program
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specific Embodiment 1

[0054] 1. Set the cell set A as a CoMP SRS group, and the cells in the cell set A communicate with each other, or determine the same CoMP SRS OFDM symbol set M through pre-configuration. The SRS of the CoMP UE can only be allocated to OFDM symbols in the set M of CoMP SRS OFDM symbols. The cell where the CoMP UE resides belongs to cell set A.

[0055] 2. Each cell in the cell set A communicates with each other, or determines the SRS root sequence number of the same CoMP UE through a kind of agreement. The SRS of the CoMP UE can only use this CoMP SRS root sequence number.

[0056] 3. Allocation of orthogonal SRS resources for different CoMP UEs. Orthogonal SRS resources can be obtained through time division multiplexing (TDM), frequency division multiplexing (FDM), code division multiplexing (CDM) or any combination of the above methods. One or more cells in the cell set A may jointly determine the SRS resource of a CoMP UE by exchanging information. For example, two cells...

specific Embodiment 2

[0059] 1. Set the cell set A as a CoMP SRS group, and each cell in it is assigned the same CoMP SRS OFDM symbol set M. SRS for CoMP UEs can only be allocated in these CoMP SRS OFDM symbols. The anchor cell of the CoMP UE belongs to cell set A.

[0060] 2. Cell set A allocates SRS root sequence numbers of at least two CoMP UEs. The SRS of the CoMP UE can only use the SRS root sequence number of the CoMP UE as described above.

[0061] 3. Allocation of orthogonal SRS resources for different CoMP UEs. Orthogonal SRS resources can be obtained through TDM, FDM, CDM or a combination thereof. One or more cells in the cell set A may jointly determine the SRS resource of a CoMP UE by exchanging information. SRS resources may include but not limited to SRS transmission time, frequency domain resources, root sequence number and cyclic shift.

[0062] 4. The cell judges whether the root sequence numbers of any two CoMP UEs are the same, if their SRS root sequence numbers are the same...

specific Embodiment 3

[0064] The CoMP SRS OFDM symbol sets M of cell 1 and cell 2 are the same. Furthermore, cell 1 and cell 2 configure and send the SRS of one CoMP UE on the same OFDM symbol. If the SRS resources of the CoMP UE are orthogonal to the SRS resources of other UEs in cell 1 and cell 2 (for example, by using different cyclic shifts of an SRS root sequence, or different SRS frequency domain resources, etc.), the CoMP The SINR of the UE's SRS in cell 1 is SINR=P SRS / N 0 . Here P SRS is the received power of the CoMP UE’s SRS received by cell 1, N 0 is the AWGN noise power. The SINR of the SRS signal of the CoMP UE received by the cell 2 can be calculated similarly. It can be seen that, after adopting the present invention, the SINR of the SRS is improved compared with the prior art. The SINR of the SRS directly affects the accuracy of the channel estimation generated by the SRS. The higher the SINR of the SRS, the better the quality of the channel estimate produced with the SRS....

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Abstract

The disclosure provides a method for configuring sounding reference signal (SRS) of coordinated multi-point (CoMP) transmission. The method may include: cells in a cell set B which is a subset of a cell set A configure for a CoMP UE in the cell set B a SRS resource orthogonal with SRS resources configured for other UEs in the cell set A by exchanging information among cells within the cell set B or based on pre-set agreement; at least one cell in the cell set B transmits to the CoMP UE SRS configuration information describing the SRS resource configured in the cell set B for the CoMP UE. The disclosure also provides apparatuses for configuring SRS of CoMP transmission.

Description

technical field [0001] The present invention relates to the field of third-generation mobile communication technology, and in particular to a method and device for configuring an uplink reference signal (Sounding Reference Signal, SRS) for coordinated multi-point transmission (Coordinated Multi-Point Transmission). Background technique [0002] The International Telecommunication Union (International Telecommunication Union, ITU) puts forward very strict requirements for the performance of the next generation mobile communication system (IMT-Advanced). For example, the maximum system transmission bandwidth reaches 100MHz, the peak rate of uplink and downlink data transmission needs to reach 1Gbps / Hz and 500M bps / Hz, 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 proposed the use of coordinated multi-point transmission technology...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/14H04W72/04H04B7/02
CPCH04W72/0426H04L5/0035H04L5/0048H04W72/27H04B7/024H04W88/08
Inventor 沈祖康高秋彬肖国军缪德山潘学明
Owner DATANG MOBILE COMM EQUIP CO LTD
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