CN104767592B

CN104767592B - A kind of port configuration of CSI-RS, CSI-RS transmission method and apparatus

Info

Publication number: CN104767592B
Application number: CN201410001524.2A
Authority: CN
Inventors: 刘建军; 郑毅; 童辉; 王飞; 侯雪颖; 胡臻平
Original assignee: China Mobile Communications Group Co Ltd
Current assignee: China Mobile Communications Group Co Ltd
Priority date: 2014-01-02
Filing date: 2014-01-02
Publication date: 2019-01-01
Anticipated expiration: 2034-01-02
Also published as: CN104767592A; WO2015101150A1

Abstract

The invention discloses a kind of configurations of the port of CSI-RS, the method and apparatus of CSI-RS transmission, the port configuration method includes: by the CSI-RS of X port in 3D-MIMO system, with the CSI-RS of 8 ports for one group, it is split as X/8 CSI-RS group, the compatible specific 8 port CSI-RS pattern of the CSI-RS pattern of every CSI-RS group；Wherein, X=8*n, n are the integer more than or equal to 2；Resource is distributed using frequency division multiplexing and/or time-multiplexed mode between different CSI-RS groups.In the embodiment of the present invention, by carrying out necessary enhancing and expansion to existing CSI-RS Pattern design, so as to support the CSI-RS of more logic ports in 3D-MIMO system.Further, while the detection for supporting user equipment to configure 3D-MIMO multiport CSI-RS by the new indication signaling of introducing, the backwards compatibility of network side configuration CSI-RS and user equipment detection CSI-RS can utmostly be kept.

Description

CSI-RS port configuration and CSI-RS transmission method and equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for configuring a CSI-RS port, and further, to a method and an apparatus for CSI-RS transmission.

Background

The existing communication systems (such as LTE (Long Term Evolution, Long Term Evolution) systems) all adopt 2D-MIMO (2Dimension-Multiple Input Multiple Output) technology, and the basic principle thereof is as follows: two-dimensional spatial degrees of freedom in the horizontal plane are used to improve transmission quality and increase system capacity. The 2D-MIMO may form a narrow beam for tracking a User according to a difference in a horizontal dimension of a geographical location of a User Equipment (UE), so as to provide a service for the User and suppress interference to other users, as shown in fig. 1, which is an application scenario diagram of the 2D-MIMO. The UE1, UE2, and UE4 have different included angles with the base station device in the horizontal dimension, so the base station device can form 3 narrow beams in the horizontal dimension to respectively aim at the UE1, UE2, and UE4 for directional transmission to serve; however, the UE2 and the UE3 have the same angle with the base station device in the horizontal dimension, but the UE2 and the UE3 have different relative angles with the base station device in the vertical dimension, so that the narrow beams transmitted by the base station device to the UE2 and the UE3 have the same direction, and interfere with each other, thereby affecting the user service quality.

How to further improve the spectrum efficiency of a future wireless communication system, a feasible direction is to fully develop the degree of freedom of a vertical space, and extend a 2D-MIMO technology to a 3D-MIMO (3Dimension-Multiple Input Multiple output) technology so as to fully utilize 3 dimensions of the space to improve the system performance. FIG. 2 is a schematic diagram of an application scenario of 3D-MIMO. For the directional beams of the UE2 and the UE3, according to the difference between the included angles of the UE2 and the UE3 and the base station device in the vertical direction, the beams are distinguished again in the vertical dimension, that is, narrow beams accurately aligned with the user are respectively formed in the 3-dimensional space, and the narrow beams provide services for the narrow beams, thereby improving the spectrum efficiency of the system. The 3D-MIMO technology can fully explore the degree of freedom of a space 3-dimensional space, further improve the frequency spectrum efficiency of a system, reduce the interference among cells and improve the overall performance of the system, and is a future development direction of the MIMO technology. In order to implement the degree of freedom in the vertical direction of 3D-MIMO, it is necessary to improve antennas, as shown in fig. 3, which is a schematic diagram of 3D antennas, the 3D antennas extend original N antennas into N × M antennas in a matrix form, where there are N antennas in the horizontal direction and M antennas in the vertical direction, and each original horizontal antenna is composed of M (e.g., 8 to 10) antenna arrays in the vertical direction.

For the R10 phase of LTE-a (LTE-Advanced ), in the transmission mode 9, the UE needs to measure based on a CSI-RS (Channel State Information Reference Signal), acquire CSI (Channel State Information), and perform CQI (Channel quality indicator) feedback. The CSI-RS can support a maximum of 8 logical Ports (8 CSI-RS Ports). The CSI-RS is transmitted periodically, with a period that is a multiple of 5ms, and is transmitted over the full frequency band. Within the subframe where the CSI-RS is located, 8 different sets of CSI-RS patterns may be configured, as shown in fig. 4A and 4B, for the CSI-RS patterns of 8 sets of 8 ports defined by the stage R10. The CSI-RS patterns 1 in fig. 4A include 5 types, the CSI-RS patterns 2 in fig. 4B include 3 types, and the time-frequency Resource positions occupied by each 8-port CSI-RS Pattern in a PRB (Physical Resource Block) are different, in fig. 4A and fig. 4B, 8 REs (Resource Element) in the same format, that is, 0, 1.

In a 3D-MIMO system, because an antenna element with a vertical dimension is introduced, and the number of the antenna elements is increased, the number of the logical ports also needs to be further extended, for example, when an N × M ═ 8 × 8 antenna (corresponding to 64 antenna elements), CSI-RS reference signals of 64 logical ports need to be designed. Obviously, the existing CSI-RS design can only support the CSI-RS of 8 logic ports at most, and cannot support the CSI-RS of 64 logic ports, and necessary enhancement and expansion are needed to be carried out on the existing CSI-RS Pattern design.

Disclosure of Invention

The embodiment of the invention provides a method and equipment for CSI-RS port configuration and CSI-RS transmission, which are used for carrying out necessary enhancement and expansion on the design of the existing CSI-RS Pattern.

In order to achieve the above object, an embodiment of the present invention provides a method for configuring a port of a CSI-RS, where the method includes the following steps:

taking the CSI-RSs of X ports in the three-dimensional multi-input multi-output 3D-MIMO system as a group, splitting the CSI-RSs into X/8 CSI-RS groups, wherein a CSI-RS pattern of each CSI-RS group is compatible with a specific 8-port CSI-RS pattern; wherein, X is 8X n, and n is an integer more than or equal to 2;

and allocating resources between different CSI-RS groups in a frequency division multiplexing and/or time division multiplexing mode.

The process of allocating resources between different CSI-RS groups in a frequency division multiplexing manner specifically includes: respectively distributing X/8 CSI-RS groups on X/8 physical resource block pairs on a frequency domain; wherein, the X/8 physical resource block pairs are distributed in a centralized way or in a distributed way on a frequency domain; or,

when k1 groups of 8-port CSI-RS can be sent in one physical resource block pair, X/8 CSI-RS groups are respectively distributed on m1 physical resource block pairs on a frequency domain; wherein the m1 physical resource block pairs are distributed in a centralized or distributed manner in the frequency domain, the m1 is the pair (X/8)/k1 rounded up, and the k1 is less than or equal to (X/8).

The process of allocating resources between different CSI-RS groups in a time division multiplexing manner specifically includes: respectively distributing X/8 CSI-RS groups in X/8 subframes on a time domain; wherein the X/8 subframes are distributed in a centralized manner or in a distributed manner in the time domain; or when k2 groups of 8-port CSI-RS can be sent in one physical resource block pair, respectively distributing X/8 CSI-RS groups in m2 subframes in the time domain; wherein the m2 subframes are distributed in a centralized or distributed manner in the time domain, the m2 is rounded up to (X/8)/k2, and the k2 is less than or equal to (X/8).

The process of allocating resources between different CSI-RS groups in frequency division multiplexing and time division multiplexing includes: respectively distributing X1 CSI-RS groups on a frequency domain over X1 physical resource block pairs, and respectively distributing X2 CSI-RS groups on a time domain within X2 subframes; wherein, X1 × X2 ═ X/8, and the X1 physical resource block pairs are distributed in a centralized or distributed manner in the frequency domain, and the X2 subframes are distributed in a centralized or distributed manner in the time domain; or,

when k3 groups of CSI-RS with 8 ports can be sent in one physical resource block pair, X3 CSI-RS groups are respectively distributed on m3 physical resource block pairs on a frequency domain, and X4 CSI-RS groups are respectively distributed in m4 subframes on a time domain; the m3 pairs of physical resource blocks are distributed in a centralized or distributed manner in a frequency domain, the m4 subframes are distributed in a centralized or distributed manner in a time domain, X3X 4X/8, the m3 is a pair (X3/8)/k3 rounded up, the m4 is a pair (X4/8)/k3 rounded up, and the k3 is less than or equal to (X/8).

The method further comprises the following steps: configuring CSI-RS pattern of one CSI-RS group of X/8 CSI-RS groupsConfiguring the CSI-RS pattern of the one CSI-RS group to be transmitted in a frequency domain in a full bandwidth, and configuring the CSI-RS pattern of the one CSI-RS group to be transmitted in a time domain in a period T_CSI-RSSubframe offset delta_CSI-RSAnd sending the information periodically.

The specific 8-port CSI-RS pattern specifically includes: a set of 8-port CSI-RS patterns defined by the R10 phase of an LTE-A system.

The embodiment of the invention provides a method for CSI-RS transmission by applying the method, which comprises the following steps: the method comprises the steps that network side equipment sends a first indication signaling to user equipment, wherein the first indication signaling carries a grouping serial number of a CSI-RS group, and the CSI-RS group comprises CSI-RSs with 8 ports; and/or when resources are allocated among different CSI-RS groups in a frequency division multiplexing mode, the network side equipment sends a second indication signaling to the user equipment, wherein the second indication signaling carries the frequency domain resource block interval and the frequency domain resource block offset of the CSI-RS groups; or, the network side equipment sends a third indication signaling and a fourth indication signaling to the user equipment, wherein the third indication signaling carries the frequency domain resource block interval of the CSI-RS group, and the fourth indication signaling carries the frequency domain resource block offset of the CSI-RS group.

The method further comprises the following steps: when resources are allocated among different CSI-RS groups in a time division multiplexing mode, the network side equipment sends a fifth indication signaling to the user equipment, wherein the fifth indication signaling carries a time subframe period and a time subframe offset of the CSI-RS groups; or, the network side device sends a sixth indication signaling and a seventh indication signaling to the user equipment, where the sixth indication signaling carries a time subframe period of the CSI-RS group, and the seventh indication signaling carries a time subframe offset of the CSI-RS group; when resources are allocated among different CSI-RS groups in a frequency division multiplexing and time division multiplexing mode, the network side equipment sends an eighth indication signaling to the user equipment, wherein the eighth indication signaling carries a frequency domain resource block interval and a frequency domain resource block offset of the CSI-RS group, and a time subframe period and a time subframe offset of the CSI-RS group; or, the network side device sends a ninth indication signaling and a tenth indication signaling to the user equipment, where the ninth indication signaling carries a frequency domain resource block interval and a frequency domain resource block offset of the CSI-RS group, and the tenth indication signaling carries a time subframe period and a time subframe offset of the CSI-RS group; or, the network side device sends an eleventh indication signaling, a twelfth indication signaling, a thirteenth indication signaling and a fourteenth indication signaling to the user equipment, where the eleventh indication signaling carries a frequency domain resource block interval of the CSI-RS group, the twelfth indication signaling carries a frequency domain resource block offset of the CSI-RS group, the thirteenth indication signaling carries a time subframe period of the CSI-RS group, and the fourteenth indication signaling carries a time subframe offset of the CSI-RS group.

The grouping serial numbers of the CSI-RS group are 0, 1,. and (X/8) -1 respectively; the CSI-RS group with a packet serial number of 0 corresponds to the 1 st port to the 8 th port of the X ports, the CSI-RS group with a packet serial number of 1 corresponds to the 9 th port to the 16 th port of the X ports.

The method further comprises the following steps: the network side equipment sends a fifteenth indication signaling to the user equipment, wherein the fifteenth indication signaling carries the Number (Number of CSIreference signals configured by the CSI-RS pattern mapping parameters); and/or the network side device sends a sixteenth indication signaling to the user equipment, wherein the sixteenth indication signaling carries Configuration (CSIreference signal Configuration) of a CSI-RS pattern mapping parameter channel state information reference signal.

The embodiment of the invention provides a method for CSI-RS transmission by applying the method, which comprises the following steps: user equipment receives a first indication signaling from network side equipment, wherein the first indication signaling carries a grouping serial number of a CSI-RS group, and the CSI-RS group comprises CSI-RSs with 8 ports; after receiving a first indication signaling, the user equipment determines a mapping relation between a packet serial number of a CSI-RS group and a port by using the packet serial number of the CSI-RS group carried in the first indication signaling; and/or when resources are allocated among different CSI-RS groups in a frequency division multiplexing mode, the user equipment receives a second indication signaling from network side equipment, wherein the second indication signaling carries the frequency domain resource block interval and the frequency domain resource block offset of the CSI-RS groups; or the user equipment receives a third indication signaling and a fourth indication signaling from the network side equipment, wherein the third indication signaling carries the frequency domain resource block interval of the CSI-RS group, and the fourth indication signaling carries the frequency domain resource block offset of the CSI-RS group.

The method further comprises the following steps: when resources are allocated among different CSI-RS groups in a time division multiplexing mode, the user equipment receives a fifth indication signaling from network side equipment, and the fifth indication signaling carries a time subframe period and a time subframe offset of the CSI-RS groups; or, the user equipment receives a sixth indication signaling and a seventh indication signaling from the network side equipment, wherein the sixth indication signaling carries a time subframe period of the CSI-RS group, and the seventh indication signaling carries a time subframe offset of the CSI-RS group; when resources are allocated among different CSI-RS groups in a frequency division multiplexing and time division multiplexing mode, the user equipment receives an eighth indication signaling from the network side equipment, wherein the eighth indication signaling carries frequency domain resource block intervals and frequency domain resource block offsets of the CSI-RS groups, and time subframe periods and time subframe offsets of the CSI-RS groups; or, the user equipment receives a ninth indication signaling and a tenth indication signaling from the network side equipment, where the ninth indication signaling carries a frequency domain resource block interval and a frequency domain resource block offset of the CSI-RS group, and the tenth indication signaling carries a time subframe period and a time subframe offset of the CSI-RS group; or, the user equipment receives an eleventh indication signaling, a twelfth indication signaling, a thirteenth indication signaling and a fourteenth indication signaling from the network side equipment, where the eleventh indication signaling carries a frequency domain resource block interval of the CSI-RS group, the twelfth indication signaling carries a frequency domain resource block offset of the CSI-RS group, the thirteenth indication signaling carries a time subframe period of the CSI-RS group, and the fourteenth indication signaling carries a time subframe offset of the CSI-RS group.

The method for determining the mapping relationship between the packet sequence number of the CSI-RS group and the port by the user equipment by using the packet sequence number of the CSI-RS group carried in the first indication signaling specifically includes: the user equipment determines that a CSI-RS group with a packet serial number of 0 corresponds to the 1 st to 8 th ports of X ports, a CSI-RS group with a packet serial number of 1 corresponds to the 9 th to 16 th ports of the X ports, and a CSI-RS group with a packet serial number of (X/8) -1 corresponds to the (X-8) th to X th ports of the X ports when the packet serial numbers of the CSI-RS group are 0, 1.

The method further comprises the following steps: the user equipment receives a fifteenth indication signaling from the network side equipment, wherein the fifteenth indication signaling carries the Number of channel state information reference signals (Number of CSI reference signals configured by the CSI-RS pattern mapping parameters); and/or the ue receives a sixteenth indication signaling from the network side device, where the sixteenth indication signaling carries a Configuration (CSI reference signal Configuration) of a CSI-RS pattern mapping parameter channel state information reference signal; the user equipment determines the time-frequency domain starting position of resource element RE mapping of a CSI-RS group in a physical resource block PRB by using the Number of CSI reference signals (Number of CSI reference signals configured) and/or the configuration of CSI reference signals (CSI reference signaling configuration) configured by CSI-RS pattern mapping parameters.

The embodiment of the invention provides a port configuration device of a channel state information reference signal (CSI-RS), which specifically comprises the following steps: the processing module is used for splitting the CSI-RS of X ports in the three-dimensional multi-input multi-output 3D-MIMO system into X/8 CSI-RS groups by taking the CSI-RS of 8 ports as a group, wherein a CSI-RS pattern of each CSI-RS group is compatible with a specific 8-port CSI-RS pattern; wherein, X is 8X n, and n is an integer more than or equal to 2; and the allocation module is used for allocating resources among different CSI-RS groups in a frequency division multiplexing and/or time division multiplexing mode.

The distribution module is specifically configured to distribute X/8 CSI-RS groups on X/8 physical resource block pairs in the frequency domain, respectively; wherein, the X/8 physical resource block pairs are distributed in a centralized way or in a distributed way on a frequency domain; or when k1 groups of 8-port CSI-RS can be sent in one physical resource block pair, respectively distributing X/8 CSI-RS groups on m1 physical resource block pairs on a frequency domain; wherein the m1 physical resource block pairs are distributed in a centralized or distributed manner in the frequency domain, the m1 is the pair (X/8)/k1 rounded up, and the k1 is less than or equal to (X/8).

The distribution module is specifically configured to distribute the X/8 CSI-RS groups in X/8 subframes on the time domain respectively; the X/8 subframes are distributed in a centralized mode or in a distributed mode in the time domain; or when k2 groups of 8-port CSI-RS can be sent in one physical resource block pair, respectively distributing X/8 CSI-RS groups in m2 subframes in the time domain; the m2 subframes are distributed in a centralized or distributed mode in the time domain, the m2 is a round-robin (X/8)/k2, and the k2 is less than or equal to (X/8).

The distribution module is specifically configured to distribute X1 CSI-RS groups on a frequency domain over X1 physical resource block pairs respectively, and distribute X2 CSI-RS groups on a time domain within X2 subframes respectively; wherein, X1 × X2 ═ X/8, and the X1 physical resource block pairs are distributed in a centralized or distributed manner in the frequency domain, and the X2 subframes are distributed in a centralized or distributed manner in the time domain; or when k3 groups of 8-port CSI-RS can be sent in one physical resource block pair, respectively distributing X3 CSI-RS groups on m3 physical resource block pairs in a frequency domain, and respectively distributing X4 CSI-RS groups in m4 subframes in a time domain; the m3 pairs of physical resource blocks are distributed in a centralized or distributed manner in a frequency domain, the m4 subframes are distributed in a centralized or distributed manner in a time domain, X3X 4X/8, the m3 is a pair (X3/8)/k3 rounded up, the m4 is a pair (X4/8)/k3 rounded up, and the k3 is less than or equal to (X/8).

The allocating module is further configured to, when configuring a CSI-RS pattern of one CSI-RS group of X/8 CSI-RS groups, configure the CSI-RS pattern of the one CSI-RS group to be transmitted in full bandwidth on a frequency domain, and configure the CSI-RS pattern of the one CSI-RS group to be transmitted in a period T on a time domain_CSI-RSSubframe offset delta_CSI-RSAnd sending the information periodically.

An embodiment of the present invention provides a network side device applied to the above device for performing CSI-RS transmission, where the network side device includes:

the sending module is used for sending a first indication signaling to user equipment, wherein the first indication signaling carries a grouping serial number of a CSI-RS group, and the CSI-RS group comprises CSI-RSs with 8 ports; and/or, when the resources are allocated between different CSI-RS groups in a frequency division multiplexing manner, the sending module is configured to send a second indication signaling to the user equipment, where the second indication signaling carries a frequency domain resource block interval and a frequency domain resource block offset of the CSI-RS group; or, the sending module is configured to send a third indication signaling and a fourth indication signaling to the user equipment, where the third indication signaling carries a frequency domain resource block interval of the CSI-RS group, and the fourth indication signaling carries a frequency domain resource block offset of the CSI-RS group.

The sending module is further configured to send a fifth indication signaling to the user equipment when resources are allocated between different CSI-RS groups in a time division multiplexing manner, where the fifth indication signaling carries a time subframe period and a time subframe offset of the CSI-RS group; or, a sixth indication signaling and a seventh indication signaling are sent to the user equipment, the sixth indication signaling carries a time subframe period of the CSI-RS group, and the seventh indication signaling carries a time subframe offset of the CSI-RS group; when resources are allocated among different CSI-RS groups in a frequency division multiplexing and time division multiplexing mode, an eighth indication signaling is sent to the user equipment, and the eighth indication signaling carries a frequency domain resource block interval and a frequency domain resource block offset of the CSI-RS group, and a time subframe period and a time subframe offset of the CSI-RS group; or, a ninth indication signaling and a tenth indication signaling are sent to the user equipment, the ninth indication signaling carries the frequency domain resource block interval and the frequency domain resource block offset of the CSI-RS group, and the tenth indication signaling carries the time subframe period and the time subframe offset of the CSI-RS group; or, an eleventh indication signaling, a twelfth indication signaling, a thirteenth indication signaling, and a fourteenth indication signaling are sent to the ue, where the eleventh indication signaling carries a frequency-domain resource block interval of a CSI-RS group, the twelfth indication signaling carries a frequency-domain resource block offset of the CSI-RS group, the thirteenth indication signaling carries a time subframe period of the CSI-RS group, and the fourteenth indication signaling carries a time subframe offset of the CSI-RS group.

The grouping serial numbers of the CSI-RS group are 0, 1,. and (X/8) -1 respectively; the CSI-RS group with the group serial number of 0 corresponds to the 1 st port to the 8 th port in the X ports, the CSI-RS group with the group serial number of 1 corresponds to the 9 th port to the 16 th port in the X ports, and the CSI-RS group with the group serial number of (X/8) -1 corresponds to the (X-8) th port to the X th port in the X ports.

The sending module is further configured to send a fifteenth indication signaling to the ue, where the fifteenth indication signaling carries the Number of CSI-RS pattern mapping parameter configured channel state information reference signals (Number of csireferencesignals configured); and/or sending a sixteenth indication signaling to the ue, where the sixteenth indication signaling carries a Configuration (CSI referrence Configuration) of a CSI-RS pattern mapping parameter channel state information reference signal.

An embodiment of the present invention provides a user equipment applied to the above-mentioned device for CSI-RS transmission, where the user equipment specifically includes: the receiving module is used for receiving a first indication signaling from network side equipment, wherein the first indication signaling carries a grouping serial number of a CSI-RS group, and the CSI-RS group comprises CSI-RSs with 8 ports; and/or when resources are allocated among different CSI-RS groups in a frequency division multiplexing mode, receiving a second indication signaling from network side equipment, wherein the second indication signaling carries the frequency domain resource block interval and the frequency domain resource block offset of the CSI-RS groups; or receiving a third indication signaling and a fourth indication signaling from a network side device, where the third indication signaling carries a frequency domain resource block interval of the CSI-RS group, and the fourth indication signaling carries a frequency domain resource block offset of the CSI-RS group; and the determining module is used for determining the mapping relation between the packet serial number of the CSI-RS group and the port by using the packet serial number of the CSI-RS group carried in the first indication signaling after receiving the first indication signaling.

The receiving module is further configured to receive a fifth indication signaling from the network side device when resources are allocated between different CSI-RS groups in a time division multiplexing manner, where the fifth indication signaling carries a time subframe period and a time subframe offset of the CSI-RS group; or receiving a sixth indication signaling and a seventh indication signaling from the network side device, where the sixth indication signaling carries a time subframe period of the CSI-RS group, and the seventh indication signaling carries a time subframe offset of the CSI-RS group; when resources are allocated among different CSI-RS groups in a frequency division multiplexing and time division multiplexing mode, receiving an eighth indication signaling from network side equipment, wherein the eighth indication signaling carries a frequency domain resource block interval and a frequency domain resource block offset of the CSI-RS group, and a time subframe period and a time subframe offset of the CSI-RS group; or receiving a ninth indication signaling and a tenth indication signaling from the network side device, where the ninth indication signaling carries a frequency domain resource block interval and a frequency domain resource block offset of the CSI-RS group, and the tenth indication signaling carries a time subframe period and a time subframe offset of the CSI-RS group; or receiving an eleventh indication signaling, a twelfth indication signaling, a thirteenth indication signaling and a fourteenth indication signaling from the network side device, where the eleventh indication signaling carries a frequency domain resource block interval of the CSI-RS group, the twelfth indication signaling carries a frequency domain resource block offset of the CSI-RS group, the thirteenth indication signaling carries a time subframe period of the CSI-RS group, and the fourteenth indication signaling carries a time subframe offset of the CSI-RS group.

The determining module is specifically configured to determine that the CSI-RS group with the group sequence number 0 corresponds to the 1 st to 8 th ports of the X ports, determine that the CSI-RS group with the group sequence number 1 corresponds to the 9 th to 16 th ports of the X ports, and determine that the CSI-RS group with the group sequence number (X/8) -1 corresponds to the (X-8) th to X th ports of the X ports, when the group sequence number of the CSI-RS group is 0, 1., (X/8) -1, respectively.

The receiving module is further configured to receive a fifteenth indication signaling from a network side device, where the fifteenth indication signaling carries a Number (Number of csireferencesignals configured) of channel state information reference signals configured by CSI-RS pattern mapping parameters; and/or receiving a sixteenth indication signaling from the network side device, where the sixteenth indication signaling carries a Configuration (CSIreference signal Configuration) of a CSI-RS pattern mapping parameter channel state information reference signal;

the determining module is further configured to determine a time-frequency domain starting position of the CSI-RS group mapped by the resource element RE in the physical resource block PRB by using the Number of channel state information reference signals (CSI of CSI references configured by the CSI-RS pattern mapping parameters) and/or the Configuration of the CSI-RS pattern mapping parameters (CSI reference signal Configuration).

Compared with the prior art, the embodiment of the invention at least has the following advantages: in the embodiment of the invention, the CSI-RS of more logic ports (such as 32 ports or 64 ports and the like) in the 3D-MIMO system can be supported by performing necessary enhancement and expansion on the existing CSI-RS Pattern design (namely the 8-port CSI-RS Pattern design in the LTE-A system). Furthermore, the backward compatibility of the CSI-RS configured by the network side and the CSI-RS detected by the user equipment can be maintained to the maximum extent while the new indication signaling is introduced to support the detection of the 3D-MIMO multi-port CSI-RS configuration by the user equipment.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

FIG. 1 is a schematic diagram of an application scenario of 2D-MIMO in the prior art;

FIG. 2 is a diagram illustrating an application scenario of 3D-MIMO in the prior art;

fig. 3 is a schematic diagram of a 3D antenna in the prior art;

FIGS. 4A and 4B are prior art CSI-RS patterns of 8 sets of 8 ports;

fig. 5 is a schematic flowchart of a port configuration method of a CSI-RS according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a port configuration device of a CSI-RS according to a third embodiment of the present invention;

fig. 7 is a schematic structural diagram of a network-side device according to a fourth embodiment of the present invention;

fig. 8 is a schematic structural diagram of a user equipment according to a fifth embodiment of the present invention.

Detailed Description

The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

To solve the problems in the prior art, an embodiment of the present invention provides a CSI-RS port configuration method, where the CSI-RS port configuration method may be applied to a network side device (such as a base station device), and as shown in fig. 5, the CSI-RS port configuration method may include the following steps:

step 501, splitting the CSI-RS of X ports in the 3D-MIMO system into X/8 CSI-RS groups by taking the CSI-RS of 8 ports as a group, wherein a CSI-RS pattern of each CSI-RS group is compatible with a specific 8-port CSI-RS pattern; wherein, X is 8X n, and n is an integer greater than or equal to 2.

In the embodiment of the present invention, the specific 8-port CSI-RS pattern specifically includes: a set of 8-port CSI-RS patterns of the 8-port CSI-RS patterns defined by the R10 phase of the LTE-a system. For example, the specific 8-port CSI-RS pattern is a set of 8-port CSI-RS patterns in the 8-set 8-port CSI-RS patterns shown in fig. 4A and 4B, and the CSI-RS patterns shown in fig. 4A and 4B are not described in detail again.

In a preferred implementation manner of the embodiment of the present invention, when splitting a CSI-RS of X ports in a 3D-MIMO system into X/8 CSI-RS groups with a CSI-RS of 8 ports as a group, the group numbers of the CSI-RS groups are 0, 1., (X/8) -1; the CSI-RS group with the group serial number of 0 corresponds to the 1 st port to the 8 th port in the X ports, the CSI-RS group with the group serial number of 1 corresponds to the 9 th port to the 16 th port in the X ports, and so on, the CSI-RS group with the group serial number of (X/8) -1 corresponds to the (X-8) th port to the X th port in the X ports.

In the embodiment of the invention, the CSI-RS design (such as 32 ports or 64 ports) of the 3D-MIMO system is realized by expanding 8 groups of 8-port CSI-RS patterns defined in the R10 stage of the LTE-A system, that is, the CSI-RSs of X ports (such as 32 ports/64 ports) in the 3D-MIMO system are split into a plurality of groups by taking the 8 ports as one group, wherein each group of CSI-RSs is compatible with the 8-port CSI-RS pattern design (only port number mapping is different) of the LTE-A R10, so that the influence of the 3D-MIMO system on the CSI-RS scheme in the existing specification is reduced. Taking the CSI-RS Pattern design of the X ports (e.g., 32 ports, 64 ports, etc.) as an example, the CSI-RS is split into X/8 groups, the 0 th group is mapped to ports 0-7, the 1 st group is mapped to ports 8-15, and so on, and the (X/8) -1 th group is mapped to ports (X-8) - (X-1).

Step 502, allocating resources between different CSI-RS groups in a Frequency Division Multiplexing (FDM) and/or Time Division Multiplexing (TDM) manner, that is, allocating resources between different CSI-RS groups in a frequency division multiplexing manner, or allocating resources between different CSI-RS groups in a time division multiplexing manner, or allocating resources between different CSI-RS groups in a frequency division multiplexing and time division multiplexing manner.

In the first mode, resources are allocated among different CSI-RS groups in a frequency division multiplexing mode.

In the first case, X/8 CSI-RS groups are respectively distributed on X/8 physical resource block pairs (PRB Pair) on a frequency domain; wherein, the X/8 physical resource block pairs may be distributed centrally (i.e. continuous distribution in frequency domain) or distributed (i.e. discrete distribution in frequency domain).

In case two, if it is designed that multiple sets of 8-port CSI-RSs can be configured and transmitted in each physical resource block Pair (PRB Pair), the 3D-MIMO system may also transmit multiple sets of 8-port CSI-RSs (e.g., k1 sets, etc.) in the same 1 physical resource block Pair. Based on this, when k1 sets of 8-port CSI-RS can be sent in one physical resource block pair, X/8 CSI-RS sets can be distributed over m1 physical resource block pairs on the frequency domain, respectively; wherein, m1 physical resource block pairs can be distributed in a centralized manner in the frequency domain (i.e. continuous distribution in the frequency domain) or in a distributed manner (i.e. discrete distribution in the frequency domain), m1 is the pair (X/8)/k1 rounded up, and k1 is less than or equal to (X/8). Based on the mode, the whole PRB Pair is taken from the (X/8)/k1 direction of the frequency domain and is transmitted, so that the subband interval for completing the transmission of all X CSI-RS ports can be reduced, and the influence of frequency selective fading on channel detection and interference measurement is reduced.

And secondly, allocating resources among different CSI-RS groups in a time division multiplexing mode.

In the first case, X/8 CSI-RS groups are respectively distributed in X/8 subframes (subframes) on a time domain; wherein, the X/8 subframes can be distributed in a centralized manner in the time domain (i.e. continuous distribution in the time domain, mainly applicable to FDD LTE system) or distributed (i.e. discrete distribution in the time domain).

In case two, if it is designed that multiple sets of 8-port CSI-RSs can be configured and transmitted in each physical resource block Pair (PRB Pair), the 3D-MIMO system may also transmit multiple sets of 8-port CSI-RSs (e.g., k2 sets, etc.) in the same 1 physical resource block Pair. Based on this, when k2 sets of 8-port CSI-RS can be sent in one physical resource block pair, X/8 CSI-RS sets can be respectively distributed within m2 subframes in the time domain; wherein, m2 subframes are distributed in a centralized manner in the time domain (i.e. continuous distribution in the time domain) or in a distributed manner (i.e. discrete distribution in the time domain), m2 is rounded up to (X/8)/k2, and k2 is less than or equal to (X/8). Based on the above manner, only the whole Subframe (Subframe) is taken from the (X/8)/k2 time domain to be sent, so that the time interval for completing the sending of all X CSI-RS ports can be reduced, and the influence of the time domain channel change on the channel detection and the interference measurement can be reduced.

And thirdly, allocating resources among different CSI-RS groups in a frequency division multiplexing and time division multiplexing mode.

In case one, X1 CSI-RS groups are respectively distributed on X1 physical resource block pairs (PRB pairs) in the frequency domain, and X2 CSI-RS groups are respectively distributed in X2 subframes (Subframe) in the time domain; wherein, X1 × X2 is X/8, and the X1 physical resource block pairs may be distributed centrally (i.e., continuous distribution in frequency domain) or distributed (i.e., discrete distribution in frequency domain), and the X2 subframes may be distributed centrally (i.e., continuous distribution in time domain, mainly applicable to FDD LTE system) or distributed (i.e., discrete distribution in time domain).

Specifically, 1 group of 8-port CSI-RSs in each PRB is multiplexed in a frequency domain FDM, and m groups of 8-port CSI-RSs are multiplexed in a time domain TDM, and n groups of 8-port CSI-RSs are multiplexed in a time domain TDM; wherein, X/8 ═ m × n, the multiplexing mode can be centralized distribution or distributed distribution. In each PRB, k groups of 8-port CSI-RSs are multiplexed m times in frequency domain FDM, and n times in time domain TDM, 8-port CSI-RSs are multiplexed; wherein, X/8 ═ m × n × k, the multiplexing mode can be centralized distribution or distributed distribution.

In case two, if it is designed that multiple sets of 8-port CSI-RSs can be configured and transmitted in each physical resource block Pair (PRB Pair), the 3D-MIMO system can also transmit multiple sets of 8-port CSI-RSs in the same 1 physical resource block Pair. Based on this, when k3 groups of 8-port CSI-RS can be sent in one physical resource block pair, X3 CSI-RS groups are respectively distributed on m3 physical resource block pairs in the frequency domain, and X4 CSI-RS groups are respectively distributed in m4 subframes in the time domain; wherein, m3 pairs of physical resource blocks are distributed in a centralized manner in a frequency domain (i.e. continuous distribution in the frequency domain) or in a distributed manner (i.e. discrete distribution in the frequency domain), m4 subframes are distributed in a centralized manner in a time domain (i.e. continuous distribution in the time domain) or in a distributed manner (i.e. discrete distribution in the time domain), X3X 4X/8, m3 is rounded up to (X3/8)/k3, m4 is rounded up to (X4/8)/k3, and k3 is less than or equal to (X/8).

In a preferred implementation manner of the embodiment of the present invention, for the first, second, and third manners, when configuring a CSI-RS pattern of one CSI-RS group of X/8 CSI-RS groups, configuring the CSI-RS pattern of the one CSI-RS group to transmit in full bandwidth on a frequency domain, and configuring the CSI-RS pattern of the one CSI-RS group to transmit in a period T on a time domain_CSI-RSSubframe offset delta_CSI-RSAnd sending the information periodically.

Specifically, in order to ensure that LTE-A R10 is accessed to a 3D-MIMO system, X/8 groups of 8 portsThe 1 group of 8-port CSI-RS in the CSI-RS adopts a design of complete backward compatibility, namely the 1 group of 8-port CSI-RS is completely configured according to an 8-port CSI-RS pattern defined by LTE-A R10 specification and is transmitted in a full bandwidth on a frequency domain, and a certain period T is configured on a time domain_CSI-RSA certain subframe offset delta_CSI-RSPeriodic transmissions, which may be as shown in table 1 (i.e., periodically configured to be multiples of 5ms and different subframe offsets, e.g., 5ms, 10ms, 20ms, 40ms, 80ms, etc.) according to the requirements of channel measurements or interference measurements. The advantage of this design is to ensure that the user equipment of LTE-A R10 can access the 3D-MIMO system according to the existing protocol scheme without affecting backward compatibility. Furthermore, other sets of newly added 8-port CSI-RSs (for example, the X-port CSI-RS is split into X/8 sets, except for the 1 st set of 8-port CSI-RSs, the newly added (X/8) -1 set of 8-port CSI-RSs) may all adopt the multiplexing method of the above-mentioned first mode, second mode, or third mode to perform corresponding design and resource mapping.

Table 1: CSI-RS transmission period and subframe offset defined by LTE-A Rel-10 specification

In summary, in the embodiment of the present invention, CSI-RSs of more logical ports (e.g., 32 ports or 64 ports) in a 3D-MIMO system can be supported by performing necessary enhancement and expansion on the existing CSI-RS Pattern design (i.e., the 8-port CSI-RS Pattern design in the LTE-a system).

Example two

Based on the method for configuring the ports of the CSI-RS proposed in the first embodiment (i.e., splitting the CSI-RS of X ports in a 3D-MIMO system into X/8 CSI-RS groups by using the CSI-RS of 8 ports as a group, where the CSI-RS pattern of each CSI-RS group is compatible with a specific 8-port CSI-RS pattern, and allocating resources between different CSI-RS groups in a frequency division multiplexing and/or time division multiplexing manner), the second embodiment of the present invention provides a method for transmitting the CSI-RS, which includes introducing a signaling message to indicate a packet sequence number 0, 1, · (X/8) -1 corresponding to each 8-port CSI-RS packet, and introducing two parameter signaling or associating one parameter signaling including the two pieces of information, namely, a resource block interval (in units of frequency domain PRBs) and a frequency domain resource block offset (in units of PRBs), and the detection of the 3D-MIMO multi-port CSI-RS configuration by the user equipment is supported.

Based on this, in the embodiment of the present invention, the network side device sends the first indication signaling to the user equipment, where the first indication signaling carries the packet sequence number of the CSI-RS group, and the CSI-RS group includes CSI-RS of 8 ports. The grouping serial numbers of the CSI-RS group are 0, 1., (X/8) -1 respectively; the CSI-RS group with a packet serial number of 0 corresponds to the 1 st port to the 8 th port of the X ports, the CSI-RS group with a packet serial number of 1 corresponds to the 9 th port to the 16 th port of the X ports.

Further, the user equipment receives a first indication signaling from the network side equipment, the first indication signaling carries a grouping serial number of the CSI-RS group, and the CSI-RS group comprises CSI-RSs of 8 ports; after receiving the first indication signaling, the user equipment determines the mapping relationship between the packet serial number of the CSI-RS group and the port by using the packet serial number of the CSI-RS group carried in the first indication signaling. In a specific implementation manner, the process of determining, by the user equipment, the mapping relationship between the packet sequence number of the CSI-RS group and the port by using the packet sequence number of the CSI-RS group carried in the first indication signaling specifically includes: when the group sequence numbers of the CSI-RS groups are respectively 0, 1., (X/8) -1, the user equipment determines that the CSI-RS group with the group sequence number of 0 corresponds to the 1 st port to the 8 th port in the X ports, the CSI-RS group with the group sequence number of 1 corresponds to the 9 th port to the 16 th port in the X ports, and so on, and the CSI-RS group with the group sequence number of (X/8) -1 corresponds to the (X-8) th port to the X th port in the X ports.

In a specific application scenario, each 8-port CSI-RS packet corresponds to a packet sequence number 0, 1., (X/8) -1, which is split into X/8 ═ 4 groups for example for a 32-port CSI-RS, and at least 2-bit indication is adopted; and splitting the 64-port CSI-RS into X/8-8 groups, and adopting at least 3bit indication. After receiving the first indication signaling, the user equipment acquires port number mapping corresponding to the 8-port CSI-RS group; wherein the 0 th group is mapped to the ports 0-7, the 1 st group is mapped to the ports 8-15, and so on.

In order to distinguish resource mapping of each group of 8-port CSI-RS in the frequency domain, in the embodiment of the present invention, two parameter signaling of a frequency domain resource block interval (taking PRB as a unit, which is equivalent to a frequency domain period) and a frequency domain resource block offset (taking PRB as a unit) are introduced, or one parameter signaling including the two pieces of information is associated.

Based on this, in the embodiment of the present invention, when allocating resources between different CSI-RS groups in a frequency division multiplexing manner, the network side device sends a second indication signaling to the user equipment, where the second indication signaling carries a frequency domain resource block interval and a frequency domain resource block offset of the CSI-RS group; or the network side equipment sends a third indication signaling and a fourth indication signaling to the user equipment, wherein the third indication signaling carries the frequency domain resource block interval of the CSI-RS group, and the fourth indication signaling carries the frequency domain resource block offset of the CSI-RS group.

Further, when resources are allocated among different CSI-RS groups in a frequency division multiplexing mode, the user equipment receives a second indication signaling from the network side equipment, and the second indication signaling carries the frequency domain resource block interval and the frequency domain resource block offset of the CSI-RS groups; or the user equipment receives a third indication signaling and a fourth indication signaling from the network side equipment, wherein the third indication signaling carries the frequency domain resource block interval of the CSI-RS group, and the fourth indication signaling carries the frequency domain resource block offset of the CSI-RS group.

To ensure backward compatibility, based on the CSI-RS subframe corresponding to each 8-port CSI-RS groupConfiguration I_CSI-RSAnd determining the subframe period and the subframe offset of the time domain. Based on this, in the embodiment of the present invention, when resources are allocated between different CSI-RS groups in a time division multiplexing manner, the network side device sends a fifth indication signaling to the user equipment, where the fifth indication signaling carries a time subframe period and a time subframe offset of the CSI-RS group; or the network side equipment sends a sixth indication signaling and a seventh indication signaling to the user equipment, wherein the sixth indication signaling carries the time subframe period of the CSI-RS group, and the seventh indication signaling carries the time subframe offset of the CSI-RS group. Further, when resources are allocated among different CSI-RS groups in a time division multiplexing mode, the user equipment receives a fifth indication signaling from the network side equipment, wherein the fifth indication signaling carries the time subframe period and the time subframe offset of the CSI-RS groups; or the user equipment receives a sixth indication signaling and a seventh indication signaling from the network side equipment, wherein the sixth indication signaling carries the time subframe period of the CSI-RS group, and the seventh indication signaling carries the time subframe offset of the CSI-RS group.

It should be further noted that, in the embodiment of the present invention, when resources are allocated between different CSI-RS groups in a frequency division multiplexing and time division multiplexing manner, a network side device sends an eighth indication signaling to a user equipment, where the eighth indication signaling carries a frequency domain resource block interval and a frequency domain resource block offset of the CSI-RS group, and a time subframe period and a time subframe offset of the CSI-RS group; or the network side equipment sends a ninth indication signaling and a tenth indication signaling to the user equipment, wherein the ninth indication signaling carries the frequency domain resource block interval and the frequency domain resource block offset of the CSI-RS group, and the tenth indication signaling carries the time subframe period and the time subframe offset of the CSI-RS group; or the network side equipment sends an eleventh indication signaling, a twelfth indication signaling, a thirteenth indication signaling and a fourteenth indication signaling to the user equipment, wherein the eleventh indication signaling carries the frequency domain resource block interval of the CSI-RS group, the twelfth indication signaling carries the frequency domain resource block offset of the CSI-RS group, the thirteenth indication signaling carries the time subframe period of the CSI-RS group, and the fourteenth indication signaling carries the time subframe offset of the CSI-RS group. Further, when resources are allocated among different CSI-RS groups in a frequency division multiplexing and time division multiplexing mode, the user equipment receives an eighth indication signaling from the network side equipment, wherein the eighth indication signaling carries frequency domain resource block intervals and frequency domain resource block offsets of the CSI-RS groups, and time subframe periods and time subframe offsets of the CSI-RS groups; or the user equipment receives a ninth indication signaling and a tenth indication signaling from the network side equipment, wherein the ninth indication signaling carries the frequency domain resource block interval and the frequency domain resource block offset of the CSI-RS group, and the tenth indication signaling carries the time subframe period and the time subframe offset of the CSI-RS group; or the user equipment receives an eleventh indication signaling, a twelfth indication signaling, a thirteenth indication signaling and a fourteenth indication signaling from the network side equipment, wherein the eleventh indication signaling carries the frequency domain resource block interval of the CSI-RS group, the twelfth indication signaling carries the frequency domain resource block offset of the CSI-RS group, the thirteenth indication signaling carries the time subframe period of the CSI-RS group, and the fourteenth indication signaling carries the time subframe offset of the CSI-RS group.

When the number of the configured CSI-RS logical ports on the network side is less than 8 (e.g., 1 port, 2 port, 4 port), the resources of the 8-port CSI-RS in fig. 4A and 4B may be split into multiple sets of 1-port, 2-port, 4-port CSI-RS to increase the multiplexing dimension. According to the LTE-a Rel-10 specification, a network side may configure 1 port/2 port/4 port/8 port CSI-RS transmission through high layer signaling (2 bits indicate the Number of configured CSI reference signals), and select which set of CSI-RS available resources to send channel state information (5 bits indicate the Configuration of the CSI reference signals) by the high layer signaling Configuration, and determine the start position of the time-frequency domain of the set of CSI-RS available resources jointly by the two parameters, the Number of configured CSI reference signals and the Configuration of the CSI reference signals. Wherein, the 1/2 port CSI-RS occupies 2 REs, 32 groups are possible to configure, the 4 port CSI-RS occupies 4 REs, 16 groups are possible to configure, the 8 port CSI-RS occupies 8 REs, and 8 groups are possible to configure.

Based on this, in the embodiment of the present invention, the network side device sends a fifteenth indication signaling to the user equipment, where the fifteenth indication signaling carries the Number of channel state information reference signals (Number of csireferencesignals configured by the CSI-RS pattern mapping parameter); and/or the network side device sends a sixteenth indication signaling to the user equipment, wherein the sixteenth indication signaling carries Configuration (CSI referrence Configuration) of a CSI-RS pattern mapping parameter channel state information reference signal. The user equipment receives a fifteenth indication signaling from the network side equipment, wherein the fifteenth indication signaling carries the Number (Number of CSIreference signals configured by the CSI-RS pattern mapping parameter); and/or receiving a sixteenth indication signaling from the network side device, where the sixteenth indication signaling carries Configuration (CSI referrence Configuration) of a CSI-RS pattern mapping parameter channel state information reference signal; the user equipment determines the time-frequency domain starting position of the RE mapping of the CSI-RS group in the PRB by using the Number of the CSI reference signals configured by the CSI-RS pattern mapping parameters (Number of CSI reference signals configured) and/or the Configuration of the CSI-RS pattern mapping parameters (CSI reference signal Configuration).

In summary, in the embodiment of the present invention, the CSI-RS of more logical ports in the 3D-MIMO system can be supported by performing necessary enhancement and expansion on the existing CSI-RS Pattern design (i.e., the 8-port CSI-RS Pattern design in the LTE-a system). Furthermore, the backward compatibility of the CSI-RS configured by the network side and the CSI-RS detected by the user equipment can be maintained to the maximum extent while the new indication signaling is introduced to support the detection of the 3D-MIMO multi-port CSI-RS configuration by the user equipment.

EXAMPLE III

Based on the same inventive concept as the above method, an embodiment of the present invention further provides a CSI-RS port configuration device, and as shown in fig. 6, the CSI-RS port configuration device specifically includes: the processing module 11 is configured to split CSI-RSs of X ports in the 3D-MIMO system into X/8 CSI-RS groups by taking CSI-RSs of 8 ports as a group, where a CSI-RS pattern of each CSI-RS group is compatible with a specific 8-port CSI-RS pattern; wherein, X is 8X n, and n is an integer more than or equal to 2; and an allocating module 12, configured to allocate resources between different CSI-RS groups in a frequency division multiplexing and/or time division multiplexing manner.

The allocating module 12 is specifically configured to distribute X/8 CSI-RS groups on X/8 physical resource block pairs in the frequency domain, respectively; wherein, the X/8 physical resource block pairs are distributed in a centralized way or in a distributed way on a frequency domain; or when k1 groups of 8-port CSI-RS can be sent in one physical resource block pair, respectively distributing X/8 CSI-RS groups on m1 physical resource block pairs on a frequency domain; wherein the m1 physical resource block pairs are distributed in a centralized or distributed manner in the frequency domain, the m1 is the pair (X/8)/k1 rounded up, and the k1 is less than or equal to (X/8).

The allocating module 12 is specifically configured to distribute X/8 CSI-RS groups in X/8 subframes on the time domain respectively; the X/8 subframes are distributed in a centralized mode or in a distributed mode in the time domain; or when k2 groups of 8-port CSI-RS can be sent in one physical resource block pair, respectively distributing X/8 CSI-RS groups in m2 subframes in the time domain; the m2 subframes are distributed in a centralized or distributed mode in the time domain, the m2 is a round-robin (X/8)/k2, and the k2 is less than or equal to (X/8).

The allocating module 12 is specifically configured to distribute X1 CSI-RS groups on the frequency domain over X1 physical resource block pairs respectively, and distribute X2 CSI-RS groups on the time domain within X2 subframes respectively; wherein, X1 × X2 ═ X/8, and the X1 physical resource block pairs are distributed in a centralized or distributed manner in the frequency domain, and the X2 subframes are distributed in a centralized or distributed manner in the time domain; or, when k3 groups of CSI-RS with 8 ports can be sent in one physical resource block pair, the allocating module 12 is specifically configured to distribute X3 CSI-RS groups on m3 physical resource block pairs in the frequency domain, and distribute X4 CSI-RS groups on the time domain within m4 subframes, respectively; the m3 pairs of physical resource blocks are distributed in a centralized or distributed manner in a frequency domain, the m4 subframes are distributed in a centralized or distributed manner in a time domain, X3X 4X/8, the m3 is a pair (X3/8)/k3 rounded up, the m4 is a pair (X4/8)/k3 rounded up, and the k3 is less than or equal to (X/8).

The allocating module 12 is further configured to, when configuring the CSI-RS pattern of one CSI-RS group of the X/8 CSI-RS groups, configure the CSI-RS pattern of the one CSI-RS group to be sent in full bandwidth on the frequency domain, and configure the CSI-RS pattern of the one CSI-RS group to be sent in the time domain with a period T_CSI-RSSubframe offset delta_CSI-RSAnd sending the information periodically.

The modules of the device can be integrated into a whole or can be separately deployed. The modules can be combined into one module, and can also be further split into a plurality of sub-modules.

Example four

Based on the same inventive concept as the above method, an embodiment of the present invention further provides a network side device applied to the device in the third embodiment for performing CSI-RS transmission, where as shown in fig. 7, the network side device includes: a sending module 21, configured to send a first indication signaling to a user equipment, where the first indication signaling carries a packet sequence number of a CSI-RS group, and the CSI-RS group includes CSI-RS with 8 ports; and/or when resources are allocated among different CSI-RS groups in a frequency division multiplexing mode, sending a second indication signaling to the user equipment, wherein the second indication signaling carries the frequency domain resource block interval and the frequency domain resource block offset of the CSI-RS groups; or sending a third indication signaling and a fourth indication signaling to the user equipment, wherein the third indication signaling carries the frequency domain resource block interval of the CSI-RS group, and the fourth indication signaling carries the frequency domain resource block offset of the CSI-RS group.

The sending module 21 is further configured to send a fifth indication signaling to the user equipment when resources are allocated between different CSI-RS groups in a time division multiplexing manner, where the fifth indication signaling carries a time subframe period and a time subframe offset of the CSI-RS group; or, a sixth indication signaling and a seventh indication signaling are sent to the user equipment, the sixth indication signaling carries a time subframe period of the CSI-RS group, and the seventh indication signaling carries a time subframe offset of the CSI-RS group; when resources are allocated among different CSI-RS groups in a frequency division multiplexing and time division multiplexing mode, an eighth indication signaling is sent to the user equipment, and the eighth indication signaling carries a frequency domain resource block interval and a frequency domain resource block offset of the CSI-RS group, and a time subframe period and a time subframe offset of the CSI-RS group; or, a ninth indication signaling and a tenth indication signaling are sent to the user equipment, the ninth indication signaling carries the frequency domain resource block interval and the frequency domain resource block offset of the CSI-RS group, and the tenth indication signaling carries the time subframe period and the time subframe offset of the CSI-RS group; or, an eleventh indication signaling, a twelfth indication signaling, a thirteenth indication signaling, and a fourteenth indication signaling are sent to the ue, where the eleventh indication signaling carries a frequency-domain resource block interval of a CSI-RS group, the twelfth indication signaling carries a frequency-domain resource block offset of the CSI-RS group, the thirteenth indication signaling carries a time subframe period of the CSI-RS group, and the fourteenth indication signaling carries a time subframe offset of the CSI-RS group.

In the embodiment of the invention, the grouping serial numbers of the CSI-RS group are respectively 0, 1., (X/8) -1; the CSI-RS group with the group serial number of 0 corresponds to the 1 st port to the 8 th port of the X ports, the CSI-RS group with the group serial number of 1 corresponds to the 9 th port to the 16 th port of the X ports.

The sending module 21 is further configured to send a fifteenth indication signaling to the user equipment, where the fifteenth indication signaling carries the Number of channel state information reference signals (Number of CSI-RS pattern signals configured) in the CSI-RS pattern mapping parameter configuration; and/or sending a sixteenth indication signaling to the ue, where the sixteenth indication signaling carries a Configuration (CSI referrence Configuration) of a CSI-RS pattern mapping parameter channel state information reference signal.

EXAMPLE five

Based on the same inventive concept as the above method, an embodiment of the present invention further provides a user equipment applied to the equipment shown in the third embodiment for CSI-RS transmission, where as shown in fig. 8, the user equipment specifically includes: a receiving module 31, configured to receive a first indication signaling from a network side device, where the first indication signaling carries a packet sequence number of a CSI-RS group, and the CSI-RS group includes CSI-RSs with 8 ports; and/or when resources are allocated among different CSI-RS groups in a frequency division multiplexing mode, receiving a second indication signaling from network side equipment, wherein the second indication signaling carries the frequency domain resource block interval and the frequency domain resource block offset of the CSI-RS groups; or receiving a third indication signaling and a fourth indication signaling from a network side device, where the third indication signaling carries a frequency domain resource block interval of the CSI-RS group, and the fourth indication signaling carries a frequency domain resource block offset of the CSI-RS group; the determining module 32 is configured to determine, after receiving the first indication signaling, a mapping relationship between a packet sequence number of the CSI-RS group and a port by using the packet sequence number of the CSI-RS group carried in the first indication signaling.

The receiving module 31 is further configured to receive a fifth indication signaling from a network side device when resources are allocated between different CSI-RS groups in a time division multiplexing manner, where the fifth indication signaling carries a time subframe period and a time subframe offset of the CSI-RS group; or receiving a sixth indication signaling and a seventh indication signaling from the network side device, where the sixth indication signaling carries a time subframe period of the CSI-RS group, and the seventh indication signaling carries a time subframe offset of the CSI-RS group; when resources are allocated among different CSI-RS groups in a frequency division multiplexing and time division multiplexing mode, receiving an eighth indication signaling from network side equipment, wherein the eighth indication signaling carries a frequency domain resource block interval and a frequency domain resource block offset of the CSI-RS group, and a time subframe period and a time subframe offset of the CSI-RS group; or receiving a ninth indication signaling and a tenth indication signaling from the network side device, where the ninth indication signaling carries a frequency domain resource block interval and a frequency domain resource block offset of the CSI-RS group, and the tenth indication signaling carries a time subframe period and a time subframe offset of the CSI-RS group; or receiving an eleventh indication signaling, a twelfth indication signaling, a thirteenth indication signaling and a fourteenth indication signaling from the network side device, where the eleventh indication signaling carries a frequency domain resource block interval of the CSI-RS group, the twelfth indication signaling carries a frequency domain resource block offset of the CSI-RS group, the thirteenth indication signaling carries a time subframe period of the CSI-RS group, and the fourteenth indication signaling carries a time subframe offset of the CSI-RS group.

The determining module 32 is specifically configured to determine that the CSI-RS group with the group sequence number 0 corresponds to the 1 st to 8 th ports of the X ports, determine that the CSI-RS group with the group sequence number 1 corresponds to the 9 th to 16 th ports of the X ports, and determine that the CSI-RS group with the group sequence number (X/8) -1 corresponds to the (X-8) th to X th ports of the X ports, when the group sequence numbers of the CSI-RS group are 0, 1, (X/8) -1, respectively.

The receiving module 31 is further configured to receive a fifteenth indication signaling from a network side device, where the fifteenth indication signaling carries the Number of channel state information reference signals (Number of csireferencesignals configured by the CSI-RS pattern mapping parameter); and/or receiving a sixteenth indication signaling from the network side device, where the sixteenth indication signaling carries a Configuration (CSIreference signal Configuration) of a CSI-RS pattern mapping parameter channel state information reference signal; the determining module 32 is further configured to determine a time-frequency-domain starting position of the CSI-RS group mapped to the resource element RE in the physical resource block PRB by using the Number of CSI-RS pattern mapping parameter configured CSI-RS reference signals (configured) and/or the configuration of CSI-RS pattern mapping parameter CSI-RS reference signals (configured CSI-reference signaling).

Through the above description of the embodiments, those skilled in the art will clearly understand that the present invention may be implemented by software plus a necessary general hardware platform, and certainly may also be implemented by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute the methods according to the embodiments of the present invention.

Those skilled in the art will appreciate that the drawings are merely schematic representations of one preferred embodiment and that the blocks or flow diagrams in the drawings are not necessarily required to practice the present invention.

Those skilled in the art will appreciate that the modules in the devices in the embodiments may be distributed in the devices in the embodiments according to the description of the embodiments, and may be correspondingly changed in one or more devices different from the embodiments. The modules of the above embodiments may be combined into one module, or further split into multiple sub-modules.

The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.

The above disclosure is only for a few specific embodiments of the present invention, but the present invention is not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.

Claims

1. A port configuration method for a channel state information reference signal (CSI-RS), the method comprising the steps of:

allocating resources among different CSI-RS groups in a frequency division multiplexing and/or time division multiplexing mode;

the process of allocating resources between different CSI-RS groups in a frequency division multiplexing manner specifically includes:

respectively distributing X/8 CSI-RS groups on X/8 physical resource block pairs on a frequency domain; wherein, the X/8 physical resource block pairs are distributed in a centralized way or in a distributed way on a frequency domain; or when k1 groups of 8-port CSI-RS can be sent in one physical resource block pair, respectively distributing X/8 CSI-RS groups on m1 physical resource block pairs on a frequency domain; wherein the m1 pairs of physical resource blocks are distributed in a centralized or distributed manner in the frequency domain, the m1 is the (X/8)/k1 rounded up, and the k1 is less than or equal to (X/8);

or,

the process of allocating resources between different CSI-RS groups in a time division multiplexing manner specifically includes:

respectively distributing X/8 CSI-RS groups in X/8 subframes on a time domain; wherein the X/8 subframes are distributed in a centralized manner or in a distributed manner in the time domain; or when k2 groups of 8-port CSI-RS can be sent in one physical resource block pair, respectively distributing X/8 CSI-RS groups in m2 subframes in the time domain; wherein the m2 subframes are distributed in a centralized or distributed manner in the time domain, the m2 is rounded up to (X/8)/k2, and the k2 is less than or equal to (X/8);

or,

the process of allocating resources between different CSI-RS groups in frequency division multiplexing and time division multiplexing includes:

respectively distributing X1 CSI-RS groups on a frequency domain over X1 physical resource block pairs, and respectively distributing X2 CSI-RS groups on a time domain within X2 subframes; wherein, X1 × X2 ═ X/8, and the X1 physical resource block pairs are distributed in a centralized or distributed manner in the frequency domain, and the X2 subframes are distributed in a centralized or distributed manner in the time domain; or when k3 groups of 8-port CSI-RS can be sent in one physical resource block pair, respectively distributing X3 CSI-RS groups on m3 physical resource block pairs in a frequency domain, and respectively distributing X4 CSI-RS groups in m4 subframes in a time domain; wherein, the m3 pairs of physical resource blocks are distributed in a centralized or distributed manner in a frequency domain, the m4 subframes are distributed in a centralized or distributed manner in a time domain, X3X 4X/8, the m3 is a pair (X3/8)/k3 rounded up, the m4 is a pair (X4/8)/k3 rounded up, and the k3 is less than or equal to (X/8);

when the CSI-RS pattern of one CSI-RS group in X/8 CSI-RS groups is configured, the CSI-RS pattern of the CSI-RS group is configured to be sent in a frequency domain in a full bandwidth mode, and the CSI-RS pattern of the CSI-RS group is configured to be sent in a time domain in a period T_CSI-RSSubframe offset delta_CSI-RSAnd sending the information periodically.

2. The method of claim 1, wherein the specific 8-port CSI-RS pattern is specifically: a set of 8-port CSI-RS patterns defined by the R10 phase of an LTE-A system.

3. A method for channel state information reference signal, CSI-RS, transmission applied to the method according to any of claims 1 to 2, characterized in that the method comprises the steps of:

the method comprises the steps that network side equipment sends a first indication signaling to user equipment, wherein the first indication signaling carries a grouping serial number of a CSI-RS group, and the CSI-RS group comprises CSI-RSs with 8 ports; and/or the presence of a gas in the gas,

when resources are allocated among different CSI-RS groups in a frequency division multiplexing mode, network side equipment sends a second indication signaling to user equipment, wherein the second indication signaling carries frequency domain resource block intervals and frequency domain resource block offsets of the CSI-RS groups; or, the network side equipment sends a third indication signaling and a fourth indication signaling to the user equipment, wherein the third indication signaling carries the frequency domain resource block interval of the CSI-RS group, and the fourth indication signaling carries the frequency domain resource block offset of the CSI-RS group.

4. The method of claim 3, wherein the method further comprises:

when resources are allocated among different CSI-RS groups in a time division multiplexing mode, the network side equipment sends a fifth indication signaling to the user equipment, wherein the fifth indication signaling carries a time subframe period and a time subframe offset of the CSI-RS groups; or, the network side device sends a sixth indication signaling and a seventh indication signaling to the user equipment, where the sixth indication signaling carries a time subframe period of the CSI-RS group, and the seventh indication signaling carries a time subframe offset of the CSI-RS group;

when resources are allocated among different CSI-RS groups in a frequency division multiplexing and time division multiplexing mode, the network side equipment sends an eighth indication signaling to the user equipment, wherein the eighth indication signaling carries a frequency domain resource block interval and a frequency domain resource block offset of the CSI-RS group, and a time subframe period and a time subframe offset of the CSI-RS group; or, the network side device sends a ninth indication signaling and a tenth indication signaling to the user equipment, where the ninth indication signaling carries a frequency domain resource block interval and a frequency domain resource block offset of the CSI-RS group, and the tenth indication signaling carries a time subframe period and a time subframe offset of the CSI-RS group; or, the network side device sends an eleventh indication signaling, a twelfth indication signaling, a thirteenth indication signaling and a fourteenth indication signaling to the user equipment, where the eleventh indication signaling carries a frequency domain resource block interval of the CSI-RS group, the twelfth indication signaling carries a frequency domain resource block offset of the CSI-RS group, the thirteenth indication signaling carries a time subframe period of the CSI-RS group, and the fourteenth indication signaling carries a time subframe offset of the CSI-RS group.

5. The method of claim 3, wherein the group sequence numbers of the CSI-RS groups are 0, 1., (X/8) -1; the CSI-RS group with the group serial number of 0 corresponds to the 1 st port to the 8 th port of the X ports, the CSI-RS group with the group serial number of 1 corresponds to the 9 th port to the 16 th port of the X ports.

6. The method of claim 3, wherein the method further comprises:

the network side device sends a fifteenth indication signaling to the user equipment, where the fifteenth indication signaling carries the Number of CSI reference signals (configured by CSI-RS pattern mapping parameters); and/or the network side device sends a sixteenth indication signaling to the user equipment, wherein the sixteenth indication signaling carries Configuration (CSIreference signal Configuration) of a CSI-RS pattern mapping parameter channel state information reference signal.

7. A method for channel state information reference signal, CSI-RS, transmission applied to the method according to any of claims 1 to 2, characterized in that the method comprises the steps of:

user equipment receives a first indication signaling from network side equipment, wherein the first indication signaling carries a grouping serial number of a CSI-RS group, and the CSI-RS group comprises CSI-RSs with 8 ports; after receiving a first indication signaling, the user equipment determines a mapping relation between a packet serial number of a CSI-RS group and a port by using the packet serial number of the CSI-RS group carried in the first indication signaling; and/or the presence of a gas in the gas,

when resources are allocated among different CSI-RS groups in a frequency division multiplexing mode, user equipment receives a second indication signaling from network side equipment, wherein the second indication signaling carries frequency domain resource block intervals and frequency domain resource block offsets of the CSI-RS groups; or the user equipment receives a third indication signaling and a fourth indication signaling from the network side equipment, wherein the third indication signaling carries the frequency domain resource block interval of the CSI-RS group, and the fourth indication signaling carries the frequency domain resource block offset of the CSI-RS group.

8. The method of claim 7, wherein the method further comprises:

when resources are allocated among different CSI-RS groups in a time division multiplexing mode, the user equipment receives a fifth indication signaling from the network side equipment, wherein the fifth indication signaling carries a time subframe period and a time subframe offset of the CSI-RS groups; or, the user equipment receives a sixth indication signaling and a seventh indication signaling from the network side equipment, where the sixth indication signaling carries a time subframe period of a CSI-RS group, and the seventh indication signaling carries a time subframe offset of the CSI-RS group;

when resources are allocated among different CSI-RS groups in a frequency division multiplexing and time division multiplexing mode, the user equipment receives an eighth indication signaling from the network side equipment, wherein the eighth indication signaling carries frequency domain resource block intervals and frequency domain resource block offsets of the CSI-RS groups, and time subframe periods and time subframe offsets of the CSI-RS groups; or, the user equipment receives a ninth indication signaling and a tenth indication signaling from the network side equipment, where the ninth indication signaling carries a frequency domain resource block interval and a frequency domain resource block offset of the CSI-RS group, and the tenth indication signaling carries a time subframe period and a time subframe offset of the CSI-RS group; or, the user equipment receives an eleventh indication signaling, a twelfth indication signaling, a thirteenth indication signaling and a fourteenth indication signaling from the network side equipment, where the eleventh indication signaling carries a frequency domain resource block interval of the CSI-RS group, the twelfth indication signaling carries a frequency domain resource block offset of the CSI-RS group, the thirteenth indication signaling carries a time subframe period of the CSI-RS group, and the fourteenth indication signaling carries a time subframe offset of the CSI-RS group.

9. The method of claim 7, wherein the determining, by the ue, the mapping relationship between the packet sequence numbers of the CSI-RS groups and the ports by using the packet sequence numbers of the CSI-RS groups carried in the first indication signaling specifically includes: when the group sequence numbers of the CSI-RS group are respectively 0, 1,., (X/8) -1, the user equipment determines that the CSI-RS group with the group sequence number of 0 corresponds to the 1 st port to the 8 th port of the X ports, the CSI-RS group with the group sequence number of 1 corresponds to the 9 th port to the 16 th port of the X ports, and the CSI-RS group with the group sequence number of (X/8) -1 corresponds to the (X-7) th port to the Xth port of the X ports.

10. The method of claim 7, wherein the method further comprises:

the user equipment receives a fifteenth indication signaling from a network side device, where the fifteenth indication signaling carries the Number (Number of csireffercencesignals configured by the CSI-RS pattern mapping parameter); and/or the ue receives a sixteenth indication signaling from the network side device, where the sixteenth indication signaling carries a Configuration (CSIreference signal Configuration) of a CSI-RS pattern mapping parameter channel state information reference signal;

the user equipment determines the time-frequency domain starting position of the resource element RE mapping of the CSI-RS group in the physical resource block PRB by using the number of the CSI reference signals (number CSI reference signals configured) configured by the CSI-RS pattern mapping parameters and/or the Configuration of the CSI-RS pattern mapping parameters (CSI reference signal Configuration).

11. A CSI-RS port configuration device is characterized in that the CSI-RS port configuration device specifically comprises:

the processing module is used for splitting the CSI-RS of X ports in the three-dimensional multi-input multi-output 3D-MIMO system into X/8 CSI-RS groups by taking the CSI-RS of 8 ports as a group, wherein a CSI-RS pattern of each CSI-RS group is compatible with a specific 8-port CSI-RS pattern; wherein, X is 8X n, and n is an integer more than or equal to 2;

the allocation module is configured to allocate resources between different CSI-RS groups in a frequency division multiplexing and/or time division multiplexing manner, and specifically includes:

or,

respectively distributing X/8 CSI-RS groups in X/8 subframes on a time domain; the X/8 subframes are distributed in a centralized mode or in a distributed mode in the time domain; or when k2 groups of 8-port CSI-RS can be sent in one physical resource block pair, respectively distributing X/8 CSI-RS groups in m2 subframes in the time domain; the m2 subframes are distributed in a centralized or distributed manner in the time domain, the m2 is a round-robin (X/8)/k2, and the k2 is less than or equal to (X/8);

or,

12. The device of claim 11, wherein the specific 8-port CSI-RS pattern is specifically: a set of 8-port CSI-RS patterns defined by the R10 phase of an LTE-A system.

13. A network side device applied to the device according to any one of claims 11 to 12 for CSI-RS transmission, wherein the network side device comprises:

14. The network-side device of claim 13,

the sending module is further configured to send a fifth indication signaling to the user equipment when resources are allocated between different CSI-RS groups in a time division multiplexing manner, where the fifth indication signaling carries a time subframe period and a time subframe offset of the CSI-RS group; or, a sixth indication signaling and a seventh indication signaling are sent to the user equipment, the sixth indication signaling carries a time subframe period of the CSI-RS group, and the seventh indication signaling carries a time subframe offset of the CSI-RS group; when resources are allocated among different CSI-RS groups in a frequency division multiplexing and time division multiplexing mode, an eighth indication signaling is sent to the user equipment, and the eighth indication signaling carries a frequency domain resource block interval and a frequency domain resource block offset of the CSI-RS group, and a time subframe period and a time subframe offset of the CSI-RS group; or, a ninth indication signaling and a tenth indication signaling are sent to the user equipment, the ninth indication signaling carries the frequency domain resource block interval and the frequency domain resource block offset of the CSI-RS group, and the tenth indication signaling carries the time subframe period and the time subframe offset of the CSI-RS group; or, an eleventh indication signaling, a twelfth indication signaling, a thirteenth indication signaling, and a fourteenth indication signaling are sent to the ue, where the eleventh indication signaling carries a frequency domain resource block interval of a CSI-RS group, the twelfth indication signaling carries a frequency domain resource block offset of the CSI-RS group, the thirteenth indication signaling carries a time subframe period of the CSI-RS group, and the fourteenth indication signaling carries a time subframe offset of the CSI-RS group.

15. The network-side device of claim 13, wherein the CSI-RS groups have packet sequence numbers of 0, 1., (X/8) -1; the CSI-RS group with the group serial number of 0 corresponds to the 1 st port to the 8 th port of the X ports, the CSI-RS group with the group serial number of 1 corresponds to the 9 th port to the 16 th port of the X ports.

16. The network-side device of claim 13,

17. A user equipment applied to the apparatus according to any of claims 11 to 12 for CSI-RS transmission, wherein the user equipment specifically comprises:

the receiving module is used for receiving a first indication signaling from network side equipment, wherein the first indication signaling carries a grouping serial number of a CSI-RS group, and the CSI-RS group comprises CSI-RSs with 8 ports; and/or when resources are allocated among different CSI-RS groups in a frequency division multiplexing mode, receiving a second indication signaling from network side equipment, wherein the second indication signaling carries the frequency domain resource block interval and the frequency domain resource block offset of the CSI-RS groups; or receiving a third indication signaling and a fourth indication signaling from a network side device, where the third indication signaling carries a frequency domain resource block interval of the CSI-RS group, and the fourth indication signaling carries a frequency domain resource block offset of the CSI-RS group;

and the determining module is used for determining the mapping relation between the packet serial number of the CSI-RS group and the port by using the packet serial number of the CSI-RS group carried in the first indication signaling after receiving the first indication signaling.

18. The user equipment of claim 17,

19. The user equipment of claim 17,

the determining module is specifically configured to determine that the CSI-RS group with the group sequence number 0 corresponds to the 1 st to 8 th ports of the X ports, determine that the CSI-RS group with the group sequence number 1 corresponds to the 9 th to 16 th ports of the X ports, and determine that the CSI-RS group with the group sequence number (X/8) -1 corresponds to the (X-7) th to X th ports of the X ports, when the group sequence number of the CSI-RS group is 0, 1, (X/8) -1, respectively.

20. The user equipment of claim 17,