US-12621098-B2 - Unequal density demodulation reference signal positions

US12621098B2US 12621098 B2US12621098 B2US 12621098B2US-12621098-B2

Abstract

A system can facilitate first broadband cellular communications with a user equipment, wherein the first broadband cellular communications are configured to be communicated via a group of antenna ports. The system can determine to communicate the first broadband cellular communications according to a group of differing demodulation reference signal densities, wherein respective demodulation reference signal densities of the group of differing demodulation reference signal densities correspond to respective antenna ports of the group of antenna ports. The system can communicate the group of differing demodulation reference signal densities to the user equipment. The system can facilitate the first broadband cellular communications with the user equipment according to the group of differing demodulation reference signal densities.

Inventors

Hamidreza Farmanbar
Gwenael Poitau
Evgeny Paltin

Assignees

DELL PRODUCTS L.P.

Dates

Publication Date: 20260505
Application Date: 20230512

Claims (20)

1 . A system, comprising: at least one processor; and at least one memory coupled to the at least one processor, comprising instructions that, in response to execution by the at least one processor, cause the system to perform operations, comprising: determining to communicate first broadband cellular communications with a user equipment according to a group of differing demodulation reference signal densities, wherein the first broadband cellular communications are configured to be communicated via a group of antenna ports, and wherein respective demodulation reference signal densities of the group of differing demodulation reference signal densities correspond to respective antenna ports of the group of antenna ports; determining a demodulation reference signal density of the group of differing demodulation reference signal densities based on channel state information that corresponds to the user equipment, wherein the channel state information is determined based on an uplink-downlink channel reciprocity in a time-division duplex mode; communicating the group of differing demodulation reference signal densities to the user equipment; and further communicating the first broadband cellular communications with the user equipment according to the group of differing demodulation reference signal densities.
2 . The system of claim 1 , wherein the respective demodulation reference signal densities of the group of differing demodulation reference signal densities differ across a frequency domain of the first broadband cellular communications.
3 . The system of claim 2 , wherein communicating the group of differing demodulation reference signal densities to the user equipment comprises: sending, to the user equipment, a parameter that identifies a vector, wherein respective values of the vector indicate the respective demodulation reference signal densities for respective code division multiplexing groups.
4 . The system of claim 3 , wherein a number of the code division multiplexing groups is indicated based on a combination of a number of layers parameter and a demodulation reference signal configuration type parameter that are communicated to the user equipment.
5 . The system of claim 1 , wherein the respective demodulation reference signal densities of the group of differing demodulation reference signal densities differ across a time domain of the first broadband cellular communications.
6 . The system of claim 5 , wherein communicating the group of differing demodulation reference signal densities to the user equipment comprises: sending, to the user equipment, a parameter that identifies a vector, wherein respective values of the vector indicate the respective demodulation reference signal densities for respective code division multiplexing groups.
7 . The system of claim 6 , wherein a size of the vector is equal to a number of code division multiplexing groups of the first broadband cellular communications.
8 . A method, comprising: determining, by a system comprising at least one processor, to facilitate broadband cellular communications with a user equipment; determining, by the system, to communicate the broadband cellular communications according to a group of differing demodulation reference signal densities; communicating, by the system, the group of differing demodulation reference signal densities to the user equipment; determining, by the system, a demodulation reference signal density of the group of differing demodulation reference signal densities based on channel state information that corresponds to the user equipment, wherein the channel state information is determined based on an uplink-downlink channel reciprocity in a time-division duplex mode; and after communicating the group of differing demodulation reference signal densities to the user equipment, communicating, by the system, the broadband cellular communications with the user equipment according to the group of differing demodulation reference signal densities.
9 . The method of claim 8 , wherein the channel state information is determined based on user equipment feedback from the user equipment.
10 . The method of claim 8 , further comprising: determining, by the system, a demodulation reference signal density of the group of differing demodulation reference signal densities based on user equipment position information of the user equipment.
11 . The method of claim 8 , further comprising: determining, by the system, a demodulation reference signal density of the group of differing demodulation reference signal densities based on user equipment speed information of the user equipment.
12 . A non-transitory computer-readable medium comprising instructions that, in response to execution, cause a system comprising at least one processor to perform operations, comprising: as part of facilitating broadband cellular communications with a user equipment, determining to conduct the broadband cellular communications according to a group of differing demodulation reference signal densities; determining a demodulation reference signal density of the group of differing demodulation reference signal densities based on channel state information that corresponds to the user equipment, wherein the channel state information is determined based on an uplink-downlink channel reciprocity in a time-division duplex mode; and communicating the group of differing demodulation reference signal densities to the user equipment; and after communicating the group of differing demodulation reference signal densities to the user equipment, conducting the broadband cellular communications with the user equipment according to the group of differing demodulation reference signal densities.
13 . The non-transitory computer-readable medium of claim 12 , wherein the operations further comprise: determining the group of differing demodulation reference signal densities across a frequency domain based on channel state information.
14 . The non-transitory computer-readable medium of claim 12 , wherein the operations further comprise: determining the group of differing demodulation reference signal densities across a time domain based on speed information associated with the user equipment.
15 . The non-transitory computer-readable medium of claim 12 , wherein respective demodulation reference signal densities of the group of differing demodulation reference signal densities differ across a frequency domain of the broadband cellular communications.
16 . The non-transitory computer-readable medium of claim 15 , wherein communicating the group of differing demodulation reference signal densities to the user equipment comprises: sending, to the user equipment, a parameter that identifies a vector, wherein respective values of the vector indicate the respective demodulation reference signal densities for respective code division multiplexing groups.
17 . The non-transitory computer-readable medium of claim 16 , wherein a number of the code division multiplexing groups is indicated based on a combination of a number of layers parameter and a demodulation reference signal configuration type parameter that are communicated to the user equipment.
18 . The non-transitory computer-readable medium of claim 12 , wherein the respective demodulation reference signal densities of the group of differing demodulation reference signal densities differ across a time domain of the broadband cellular communications.
19 . The non-transitory computer-readable medium of claim 12 , wherein the respective demodulation reference signal densities of the group of differing demodulation reference signal densities differ across a frequency domain of the first broadband cellular communications.
20 . The non-transitory computer-readable medium of claim 19 , wherein communicating the group of differing demodulation reference signal densities to the user equipment comprises: sending, to the user equipment, a parameter that identifies a vector, wherein respective values of the vector indicate the respective demodulation reference signal densities for respective code division multiplexing groups.

Description

BACKGROUND In cellular broadband communications, a user equipment and a network can communicate to configure a protocol to use in making further communications. SUMMARY The following presents a simplified summary of the disclosed subject matter in order to provide a basic understanding of some of the various embodiments. This summary is not an extensive overview of the various embodiments. It is intended neither to identify key or critical elements of the various embodiments nor to delineate the scope of the various embodiments. Its sole purpose is to present some concepts of the disclosure in a streamlined form as a prelude to the more detailed description that is presented later. An example system can operate as follows. The system can facilitate first broadband cellular communications with a user equipment, wherein the first broadband cellular communications are configured to be communicated via a group of antenna ports. The system can determine to communicate the first broadband cellular communications according to a group of differing demodulation reference signal densities, wherein respective demodulation reference signal densities of the group of differing demodulation reference signal densities correspond to respective antenna ports of the group of antenna ports. The system can communicate the group of differing demodulation reference signal densities to the user equipment. The system can facilitate the first broadband cellular communications with the user equipment according to the group of differing demodulation reference signal densities. An example method can comprise determining, by a system comprising a processor, to facilitate broadband cellular communications with a user equipment. The method can further comprise determining, by the system, to communicate the broadband cellular communications according to a group of differing demodulation reference signal densities. The method can further comprise communicating, by the system, the group of differing demodulation reference signal densities to the user equipment. The method can further comprise, after communicating the group of differing demodulation reference signal densities to the user equipment, communicating, by the system, the broadband cellular communications with the user equipment according to the group of differing demodulation reference signal densities. An example non-transitory computer-readable medium can comprise instructions that, in response to execution, cause a system comprising a processor to perform operations. These operations can comprise, as part of facilitating broadband cellular communications with a user equipment, determining to conduct the broadband cellular communications according to a group of differing demodulation reference signal densities. These operations can further comprise communicating the group of differing demodulation reference signal densities to the user equipment. These operations can further comprise, after communicating the group of differing demodulation reference signal densities to the user equipment, conducting the broadband cellular communications with the user equipment according to the group of differing demodulation reference signal densities. BRIEF DESCRIPTION OF THE DRAWINGS Numerous embodiments, objects, and advantages of the present embodiments will be apparent upon consideration of the following detailed description, taken in conjunction with the accompanying drawings, in which like reference characters refer to like parts throughout, and in which: FIG. 1 illustrates an example system architecture that can facilitate unequal density demodulation reference signal (DM-RS; sometimes referred to as DMRS) positions, in accordance with an embodiment of this disclosure; FIG. 2 illustrates an example DM-RS configuration of equal density DM-RS positions, that can be implemented by a component that facilitates unequal density DM-RS positions, in accordance with an embodiment of this disclosure; FIG. 3 illustrates another example DM-RS configuration of equal density DM-RS positions, that can be implemented by a component that facilitates unequal density DM-RS positions, in accordance with an embodiment of this disclosure; FIG. 4 illustrates an example signal flow that can facilitate unequal density DM-RS positions, in accordance with an embodiment of this disclosure; FIG. 5 illustrates another example DM-RS configuration that can facilitate unequal density DM-RS positions, in accordance with an embodiment of this disclosure; FIG. 6 illustrates another example DM-RS configuration that can facilitate unequal density DM-RS positions, in accordance with an embodiment of this disclosure; FIGS. 7A and 7B illustrate another example DM-RS configuration that can facilitate unequal density DM-RS positions, in accordance with an embodiment of this disclosure; FIG. 8 illustrates another example DM-RS configuration that can facilitate unequal density DM-RS positions, in accordance with an embodiment of thi