Method and equipment for configuring ports of CSI-RSs (Channel State Information Reference Signal), and method and equipment for transmitting CSI-RSs

A CSI-RS and port technology, applied in the field of communication, can solve the problem of not enough to support 64 logical ports CSI-RS

Active Publication Date: 2015-07-08
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, the CSI-RS of the existing design can only support the CSI-RS of 8 logical ports at most, which is not enough to s

Method used

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  • Method and equipment for configuring ports of CSI-RSs (Channel State Information Reference Signal), and method and equipment for transmitting CSI-RSs
  • Method and equipment for configuring ports of CSI-RSs (Channel State Information Reference Signal), and method and equipment for transmitting CSI-RSs
  • Method and equipment for configuring ports of CSI-RSs (Channel State Information Reference Signal), and method and equipment for transmitting CSI-RSs

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Embodiment 1

[0053] Aiming at the problems existing in the prior art, Embodiment 1 of the present invention provides a CSI-RS port configuration method, which can be applied to network side equipment (such as base station equipment), such as Figure 5 As shown, the port configuration method of the CSI-RS may include the following steps:

[0054] Step 501, split the CSI-RS of X ports in the 3D-MIMO system into a group of CSI-RS of 8 ports into X / 8 CSI-RS groups, and the CSI-RS of each CSI-RS group The RS pattern is compatible with a specific 8-port CSI-RS pattern; where, X=8*n, n is an integer greater than or equal to 2.

[0055] In the embodiment of the present invention, the specific 8-port CSI-RS pattern is specifically: a group of 8-port CSI-RS patterns in the 8 groups of 8-port CSI-RS patterns defined in the R10 phase of the LTE-A system. For example, a specific 8-port CSI-RS pattern is as Figure 4A and Figure 4B A group of 8-port CSI-RS patterns in the 8 groups of 8-port CSI-RS p...

Embodiment 2

[0075] Based on the CSI-RS port configuration method proposed in the first embodiment above (that is, the CSI-RS of X ports in the 3D-MIMO system is divided into X / 8 CSI-RS with 8 ports of CSI-RS as a group. -RS group, the CSI-RS pattern of each CSI-RS group is compatible with a specific 8-port CSI-RS pattern, and frequency division multiplexing and / or time division multiplexing are used to allocate resources between different CSI-RS groups), this Embodiment 2 of the invention provides a method for CSI-RS transmission, by introducing a signaling message to indicate the group sequence number 0, 1, ..., (X / 8)-1 corresponding to each 8-port CSI-RS group, and by introducing a frequency Domain resource block interval (in PRB unit) and frequency domain resource block offset (in PRB unit) two parameter signaling or associated with a parameter signaling containing the above two information, support user equipment for 3D-MIMO multiple Detection of port CSI-RS configuration.

[0076] B...

Embodiment 3

[0088] Based on the same inventive concept as the above method, an embodiment of the present invention also provides a CSI-RS port configuration device, such as Figure 6 As shown, the port configuration device of the CSI-RS specifically includes: a processing module 11, which is used to split the CSI-RS of X ports in the 3D-MIMO system into a group of 8 port CSI-RS For X / 8 CSI-RS groups, the CSI-RS pattern of each CSI-RS group is compatible with a specific 8-port CSI-RS pattern; wherein, X=8*n, n is an integer greater than or equal to 2; the allocation module 12 uses It is used to allocate resources between different CSI-RS groups by means of frequency division multiplexing and / or time division multiplexing.

[0089] The allocation module 12 is specifically configured to distribute X / 8 CSI-RS groups on X / 8 physical resource block pairs in the frequency domain; wherein, the X / 8 physical resource block pairs are in the frequency domain Centralized distribution or distributed d...

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Abstract

Disclosed are a method and a device for CSI-RS port configuration and CSI-RS transmission. The method for port configuration comprises: dividing the CSI-RSs of a number X of ports in a 3D-MIMO system into X/8 sets of CSI-RSs, with the CSI-RSs of eight ports being a set, and the CSI-RS pattern of each CSI-RS set being compatible with a specific eight-port CSI-RS pattern, wherein X＝8*n, and n is an integer greater than or equal to 2; using FDMA and/or TDMA for distributing resources among the different CSI-RS sets. In the embodiment of the present application, by means of applying necessary enhancements and expansion to present CSI-RS pattern design, CSI-RSs of more logical ports in the 3D-MIMO system are supported. Furthermore, by means of introducing new indication signaling for supporting detection of 3D-MIMO multi-port CSI-RS configurations in user equipment, the backward compatibility of network side CSI-RS configuration and CSI-RS detection by user equipment is maintained to the greatest degree.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a CSI-RS port configuration method and equipment, and further to a CSI-RS transmission method and equipment. Background technique [0002] Existing communication systems (such as LTE (Long Term Evolution, long-term evolution) systems, etc.) all use 2D-MIMO (2Dimension-Multiple Input Multiple Output, two-dimensional multiple input multiple output) technology. Two-dimensional spatial freedom to improve transmission quality and increase system capacity. Among them, 2D-MIMO can form a narrow beam to track users according to the difference in the horizontal plane dimension of the geographic location of UE (User Equipment, user equipment), and provide services for users while suppressing interference to other users, such as figure 1 As shown in , it is a schematic diagram of an application scenario of 2D-MIMO. UE1, UE2, and UE4 have different angles with the base sta...

Claims

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Application Information

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IPC IPC(8): H04L1/06
CPCH04B7/04H04B7/0632H04B7/0417H04B7/0626
Inventor 刘建军郑毅童辉王飞侯雪颖胡臻平
Owner CHINA MOBILE COMM GRP CO LTD
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