Systems and methods for interference management

Abstract

A system and method for interference management. The system and method include configuring, by a wireless communication node, a resource mapping pattern for a reference signal; and updating, by the wireless communication node, the resource mapping pattern by changing a sequence of multiple frequency domain offsets representing the reference signal relative to the frequency domain position of the reference signal based on the time domain position of the reference signal.

Description

Technical Field

[0001] The present disclosure relates generally to wireless communications and, more particularly, to systems and methods for interference management. Background Art

[0002] The 3rd Generation Partnership Project (3GPP) has developed the most successful standard technologies in the mobile communications market, such as the Universal Mobile Telecommunications System (UMTS) and Long Term Evolution (LTE), and is currently implementing the fifth-generation (5G) mobile communications technology standards. Within 3GPP, the Services and Systems Aspects Working Group 2 (SA2) is responsible for identifying the main functions and entities of the network. Summary of the Invention

[0003] The exemplary embodiments disclosed herein are intended to solve problems related to one or more problems raised in the prior art, as well as to provide additional features that will become apparent when referring to the following detailed description in conjunction with the accompanying drawings. According to various embodiments, example systems, methods, devices, and computer program products are disclosed herein. However, it should be understood that these embodiments are presented by way of example and not limitation, and it will be apparent to those of ordinary skill in the art reading this disclosure that various modifications may be made to the disclosed embodiments while remaining within the scope of this disclosure.

[0004] In one aspect, a method includes configuring, by a wireless communication node, a resource mapping pattern for a reference signal. In some embodiments, the method includes updating, by the wireless communication node, the resource mapping pattern by varying a sequence representing a plurality of frequency domain offsets of the reference signal relative to a frequency domain position of the reference signal based on a time domain position of the reference signal.

[0005] In another aspect, a method includes receiving, by a wireless communication device, a resource mapping pattern for a reference signal. In some embodiments, the method includes updating, by the wireless communication device, the resource mapping pattern by varying a sequence representing a plurality of frequency domain offsets of the reference signal relative to a frequency domain position of the reference signal based on a time domain position of the reference signal.

[0006] The above and other aspects and embodiments thereof are described in more detail in the drawings, the description and the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Various preferred embodiments of the present solution are described in detail below with reference to the following figures or diagrams. The figures are provided for illustrative purposes only and depict only exemplary embodiments of the present solution to facilitate the reader's understanding of the present solution. Therefore, the figures should not be considered limiting of the breadth, scope, or applicability of the present solution. It should be noted that for clarity and ease of illustration, the figures are not necessarily drawn to scale.

[0008] Figure 1A A table showing example combinations of {number of symbols, comb size, and / or frequency offset} corresponding to configuration of DL PRS resources according to a conventional system is shown.

[0009] Figure 1B A table showing example combinations of {number of symbols, comb size, and / or frequency offset} corresponding to configuration of UL PRS resources according to a conventional system is shown.

[0010] Figure 2 An example cellular communication network is shown in which the techniques disclosed herein may be implemented according to an embodiment of the present disclosure.

[0011] Figure 3 A block diagram of example base station and user equipment apparatus according to some embodiments of the present disclosure is shown.

[0012] Figure 4 An example time-frequency diagram of Example 1-1 according to a conventional system is shown.

[0013] Figure 5 An example time-frequency diagram of Example 1-1 according to a conventional system is shown.

[0014] Figure 6 An example time-frequency diagram of Example 1-1 according to a conventional system is shown.

[0015] Figure 7 An example time-frequency diagram of Example 2-1 according to an embodiment of the present disclosure is shown.

[0016] Figure 8 An example time-frequency diagram of Example 2-1 according to an embodiment of the present disclosure is shown.

[0017] Figure 9 Example time-frequency graphs of Examples 1-2 according to a conventional system are shown.

[0018] Figure 10 Example time-frequency graphs of Examples 1-2 according to a conventional system are shown.

[0019] Figure 11 Example time-frequency graphs of Examples 1-2 according to a conventional system are shown.

[0020] Figure 12 An example time-frequency diagram of Example 2-2 according to an embodiment of the present disclosure is shown.

[0021] Figure 13 An example time-frequency diagram of Example 2-2 according to an embodiment of the present disclosure is shown.

[0022] Figure 14 Example time-frequency graphs of Examples 1-3 according to a conventional system are shown.

[0023] Figure 15 Example time-frequency graphs of Examples 1-3 according to a conventional system are shown.

[0024] Figure 16 Example time-frequency graphs of Examples 1-3 according to a conventional system are shown.

[0025] Figure 17 Example time-frequency graphs of Examples 2-3 according to embodiments of the present disclosure are shown.

[0026] Figure 18 Example time-frequency graphs of Examples 2-3 according to embodiments of the present disclosure are shown.

[0027] Figure 19 is a flow chart illustrating a method for interference management according to some embodiments of the present disclosure.

[0028] Figure 20 is a flowchart illustrating a method for interference management according to some embodiments of the present disclosure DETAILED DESCRIPTION

[0029] Various example embodiments of the present solution are described below in conjunction with the accompanying drawings to enable one of ordinary skill in the art to make and use the present solution. As will be apparent to one of ordinary skill in the art, after reading this disclosure, various changes or modifications may be made to the examples described herein without departing from the scope of the present solution. Therefore, the present solution is not limited to the example embodiments and applications described and illustrated herein. In addition, the specific order or hierarchy of steps in the methods disclosed herein are merely example methods. Based on design preferences, the specific order or hierarchy of steps of the disclosed methods or processes may be rearranged while remaining within the scope of the present solution. Therefore, one of ordinary skill in the art will understand that the methods and techniques disclosed herein present various steps or actions in an example order, and that the present solution is not limited to the specific order or hierarchy presented, unless expressly stated otherwise.

[0030] The following acronyms are used throughout this disclosure:

[0031] 3GPP Third Generation Partnership Project

[0032] 5G fifth-generation mobile network

[0033] 5G-AN 5G Access Network

[0034] 5G gNB Next Generation NodeB

[0035] BS base station

[0036] CAG Closed Access Group

[0037] CE control components

[0038] DL downlink or downlink

[0039] eNB evolved Node B

[0040] ETSI European Telecommunications Standards Institute

[0041] LBT Listen first and speak later

[0042] LTE Long Term Evolution

[0043] MAC Media Access Control

[0044] MSC Mobile Switching Center

[0045] NAS non-access layer

[0046] NR Next-Generation RAN

[0047] OFDM Orthogonal Frequency Division Multiplexing

[0048] OFDMA Orthogonal Frequency Division Multiple Access

[0049] OSI Open Systems Interconnection

[0050] PDCP Packet Data Convergence Protocol

[0051] PRS Positioning Reference Signal

[0052] RAN Radio Access Network

[0053] RE resource element

[0054] RLC Radio Link Control

[0055] RNTI Radio Network Temporary Identifier

[0056] RRC Radio Resource Control

[0057] RV Redundancy Version

[0058] UE (User Equipment)

[0059] UL uplink or uplink

[0060] The Positioning Reference Signal (PRS) was introduced in the 3GPP standard to allow appropriate timing and / or angle measurements of the UE based on base station (BS) signals (i.e., DL PRS), thereby improving positioning performance. The standard also allows appropriate timing and / or angle measurements of the base station (BS) based on UE signals (i.e., UL PRS). In conventional PRS designs, resource element (RE) occupancy within a resource block is determined based on the parameters of the PRS resources. Specifically, it refers to the "L" parameter (sometimes called "time domain position of the reference signal"), which corresponds to the starting symbol of the PRS resource in the time slot; the "N" parameter (sometimes called "total number of time domain symbols" or "number of symbols"), which corresponds to the number of symbols of each PRS resource in the time slot; the "C" parameter (sometimes called "frequency domain period" or "comb size"), which corresponds to the resource element spacing in each symbol of the PRS resource; the "K" parameter, which corresponds to the resource element (RE) offset of the first symbol in the PRS resource in the frequency domain; and the "S" parameter (sometimes called "sequence" or "frequency offset"), which corresponds to the relative RE offset of all symbols, which is defined according to the RE offset in the frequency domain relative to the first symbol in the PRS resource.

[0061] In some embodiments, the combination of {number of symbols, comb size and / or frequency offset} may correspond to the configuration of downlink (DL) PRS resources. Figure 1A A table showing example combinations of {number of symbols, comb size and / or frequency offset} corresponding to configuration of DL (downlink) PRS resources according to a conventional system. Figure 1A Table 100 in FIG. 1 shows only a selected number of symbols, comb sizes, and frequency offsets, but networks (e.g., Figure 2 BS 202 in) and / or UE ( Figure 2 The UE204 in the embodiment may support any other combination of number of symbols, comb sizes and frequency offsets.

[0062] In some embodiments, the combination of {number of symbols, comb size and / or frequency offset} may correspond to the configuration of uplink (UL) PRS resources. Figure 1B A table showing example combinations of {number of symbols, comb size and / or frequency offset} corresponding to configuration of UL (downlink) PRS resources according to a conventional system. Figure 1B Table 100 in FIG. 1 shows only a selected number of symbols, comb sizes, and frequency offsets, but networks (e.g., Figure 2 BS 202 in) and / or UE ( Figure 2 The UE204 in the embodiment may support any other combination of number of symbols, comb sizes and frequency offsets.

[0063] Conventional systems map PRSs into patterns with frequency and time offsets. However, this resource mapping mechanism is highly likely to cause overlap in the time and frequency domains, causing PRS resources to interfere with each other and degrade network performance. In particular, when many PRS resources are transmitted in overlapping symbols, the receiver may have difficulty estimating the channel in high-interference REs.

[0064] Accordingly, the present disclosure is directed to systems and methods for enhancing PRS design to eliminate and / or mitigate PRS resource interference.

[0065] 1. Mobile communication technology and environment

[0066] Figure 2 An example wireless communication network and / or system 200 is shown in which the techniques disclosed herein may be implemented according to an embodiment of the present disclosure. In the following discussion, the wireless communication network 200 may be any wireless network, such as a cellular network or a narrowband Internet of Things (NB-IoT) network, and is referred to herein as "network 200." Such an example network 200 includes a base station 202 (hereinafter referred to as "BS 102," also referred to as a wireless communication node) and a user equipment device 204 (hereinafter referred to as "UE 204," also referred to as a wireless communication device) that may communicate with each other via a communication link 210 (e.g., a wireless communication channel), and a cluster of cells 226, 230, 232, 234, 236, 238, and 240 covering a geographic area 101. Figure 2 2, BS 202 and UE 204 are contained within the respective geographic boundaries of cell 226. Each of the other cells 230, 232, 234, 236, 238, and 240 may include at least one base station operating on its allocated bandwidth to provide adequate radio coverage to its intended users.

[0067] For example, BS 202 can operate on an allocated channel transmission bandwidth to provide sufficient coverage to UE 204. BS 202 and UE 204 can communicate via downlink radio frames 218 and uplink radio frames 224, respectively. Each radio frame 218 / 224 can be further divided into subframes 220 / 227, which can include data symbols 222 / 228. In the present disclosure, BS 202 and UE 204 are described herein as non-limiting examples of "communication nodes," which can generally practice the methods disclosed herein. According to various embodiments of the present solution, such communication nodes may be capable of wireless and / or wired communication.

[0068] Figure 3A block diagram of an example wireless communication system 300 for transmitting and receiving wireless communication signals (e.g., OFDM / OFDMA signals) according to some embodiments of the present solution is shown. The system 300 may include components and elements configured to support known or conventional operating features that need not be described in detail herein. In one illustrative embodiment, the system 300 may be used in a communication environment such as that described above. Figure 3 The system may communicate (eg, send and receive) data symbols in a wireless communication environment such as the wireless communication environment 300 of FIG.

[0069] System 300 generally includes a base station 302 (hereinafter referred to as "BS 302") and a user equipment device 304 (hereinafter referred to as "UE 304"). BS 302 includes a BS (base station) transceiver module 310, a BS antenna 312, a BS processor module 314, a BS memory module 316, and a network communication module 318, each of which is coupled to and interconnected with each other via a data communication bus 320 as needed. UE 304 includes a UE (user equipment) transceiver module 330, a UE antenna 332, a UE memory module 334, and a UE processor module 336, each of which is coupled to and interconnected with each other via a data communication bus 340 as needed. BS 302 communicates with UE 304 via a communication channel 350, which, as described herein, can be any wireless channel or other medium suitable for transmitting data.

[0070] Those skilled in the art will appreciate that the system 300 may also include Figure 3 Any number of modules other than the modules shown. It will be understood by those skilled in the art that the various illustrative blocks, modules, circuits, and processing logic described in conjunction with the embodiments disclosed herein can be implemented in hardware, computer-readable software, firmware, or any actual combination thereof. In order to clearly illustrate this interchangeability and compatibility of hardware, firmware, and software, various illustrative components, blocks, modules, circuits, and steps are generally described in terms of their functions. Whether such functions are implemented as hardware, firmware, or software depends on the specific application and the design constraints imposed on the entire system. People familiar with the concepts described herein can implement such functions in an appropriate manner for each specific application, but such implementation decisions should not be interpreted as limiting the scope of this disclosure.

[0071] In accordance with some embodiments, the UE transceiver 330 may be referred to herein as an "uplink" transceiver 330 and includes a radio frequency (RF) transmitter and an RF receiver, each including circuitry coupled to an antenna 332. A duplex switch (not shown) may alternatively couple the uplink transmitter or receiver to the uplink antenna in a time-duplexed manner. Similarly, in accordance with some embodiments, the BS transceiver 310 may be referred to herein as a "downlink" transceiver 310 and includes an RF transmitter and an RF receiver, each including circuitry coupled to an antenna 312. A downlink duplex switch may alternatively couple the downlink transmitter or receiver to the downlink antenna 312 in a time-duplexed manner. The operation of the two transceiver modules 310 and 330 may be coordinated in time such that the uplink receiver circuit is coupled to the uplink antenna 332 for receiving transmissions over the wireless transmission link 350 at the same time as the downlink transmitter is coupled to the downlink antenna 312. Rather, the operation of the two transceivers 310 and 330 may be coordinated in time such that the downlink receiver is coupled to the downlink antenna 312 for receiving transmissions over the wireless transmission link 350 at the same time as the uplink transmitter is coupled to the uplink antenna 332. In some embodiments, there is tight time synchronization with a minimum guard time between duplex direction changes.

[0072] UE transceiver 330 and base station transceiver 310 are configured to communicate via wireless data communication link 350 and cooperate with appropriately configured RF antenna arrangements 312 / 332 capable of supporting specific wireless communication protocols and modulation schemes. In some illustrative embodiments, UE transceiver 310 and base station transceiver 310 are configured to support industry standards such as Long Term Evolution (LTE) and emerging 5G standards. However, it should be understood that the present disclosure is not necessarily limited to application to specific standards and related protocols. Instead, UE transceiver 330 and base station transceiver 310 can be configured to support alternative or additional wireless data communication protocols, including future standards or variants thereof.

[0073] According to various embodiments, for example, BS 202 may be an evolved Node B (eNB), a serving eNB, a target eNB, a femto station, or a pico station. In some embodiments, UE 204 may be embodied in various types of user equipment, such as a mobile phone, a smartphone, a personal digital assistant (PDA), a tablet computer, a laptop computer, a wearable computing device, or the like. Processor modules 214 and 336 may be implemented or realized using a general-purpose processor, a content addressable memory, a digital signal processor, an application specific integrated circuit, a field programmable gate array, any suitable programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof, designed to perform the functions described herein. In this manner, the processor may be implemented as a microprocessor, a controller, a microcontroller, a state machine, or the like. The processor may also be implemented as a combination of computing devices, such as a combination of a digital signal processor and a microprocessor, a plurality of microprocessors, a combination of one or more microprocessors and a digital signal processor core, or any other such configuration.

[0074] Furthermore, the steps of the methods or algorithms described in conjunction with the embodiments disclosed herein may be embodied directly in hardware, in firmware, in software modules executed by processor modules 314 and 336, respectively, or in any practical combination thereof. Memory modules 316 and 334 may be implemented as RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. In this regard, memory modules 316 and 334 may be coupled to processor modules 310 and 330, respectively, such that processor modules 310 and 330 may read information from and write information to memory modules 316 and 334, respectively. Memory modules 316 and 334 may also be integrated into their respective processor modules 310 and 330. In some embodiments, memory modules 316 and 334 may each include cache memory for storing temporary variables or other intermediate information during the execution of instructions to be executed by processor modules 310 and 330, respectively. Memory modules 316 and 334 may also each include non-volatile memory for storing instructions to be executed by processor modules 310 and 330, respectively.

[0075] The network communication module 318 generally represents the hardware, software, firmware, processing logic and / or other components of the base station 302 that enable bidirectional communication between the base station transceiver 310 and other network components and communication nodes configured to communicate with the base station 302. For example, the network communication module 318 can be configured to support Internet or WiMAX communications. In a typical deployment, without limitation, the network communication module 318 provides an 802.3 Ethernet interface so that the base station transceiver 310 can communicate with a conventional Ethernet-based computer network. In this manner, the network communication module 318 can include a physical interface for connecting to a computer network (e.g., a mobile switching center (MSC)). As used herein with respect to a specified operation or function, the terms "configured for," "configured to," and variations thereof refer to a device, component, circuit, structure, machine, signal, etc. that is physically constructed, programmed, formatted, and / or arranged to perform the specified operation or function.

[0076] The Open Systems Interconnection (OSI) model (referred to herein as the "OSI model") is a conceptual and logical arrangement that defines network communications used by systems (e.g., wireless communication devices, wireless communication nodes) that expose interconnection and communication with other systems. The model is divided into seven subcomponents or layers, each of which represents a conceptual set of services provided to the layers above and below it. The OSI model also defines logical networks and effectively describes computer packet transmission by using different layer protocols. The OSI model may also be referred to as a seven-layer OSI model or a seven-layer model. In some embodiments, the first layer may be a physical layer. In some embodiments, the second layer may be a media access control (MAC) layer. In some embodiments, the third layer may be a radio link control (RLC) layer. In some embodiments, the fourth layer may be a packet data convergence protocol (PDCP) layer. In some embodiments, the fifth layer may be a radio resource control (RRC) layer. In some embodiments, the sixth layer may be a non-access stratum (NAS) layer or an Internet Protocol (IP) layer, and the seventh layer is other layers.

[0077] 2. Uplink PRS resource mapping

[0078] This part of the disclosure discusses mapping of uplink (UL) PRS resources.

[0079] 2.1. Conventional mapping mechanism (Example 1-1)

[0080] The first UL PRS configuration has the following parameters: L=0; N=8; C=4; K=0; resulting in a frequency offset S={0, 2, 1, 3, 0, 2, 1, 3} defining a specific UL PRS resource, and the corresponding resource mapping pattern is Figure 4 For example, Figure 4FIG4 shows a resource mapping pattern based on a first UL PRS configuration according to a conventional system. The time-frequency diagram 400 includes a frequency axis 402 corresponding to subcarriers in a resource block (RB) and a time axis 404 corresponding to symbols in a time slot. The time-frequency diagram 400 includes a plurality of resource elements, each resource element corresponding to a subcarrier and a symbol, depending on the position on the time-frequency diagram 400. Figure 4 As shown, according to the resource mapping pattern mentioned above, the resource element can be unmapped (in Figure 4 406) or mapped (in Figure 4 408). The "L" parameter corresponds to the starting symbol of the PRS resource in the time slot (e.g., L=0 indicates that the starting symbol of the PRS resource in the time slot is the first symbol); the "N" parameter corresponds to the number of symbols of each PRS resource in the time slot (e.g., N=8 indicates that the number of symbols of each PRS resource in the time slot is 8); the "C" parameter corresponds to the resource element spacing in each symbol of the PRS resource (e.g., C=4 indicates that the resource element spacing in each symbol of the PRS resource is 4); and the "K" parameter corresponds to the resource element (RE) offset of the first symbol in the PRS resource in the frequency domain. (for example, K=0 indicates that the resource element (RE) offset of the first symbol in the PRS resource in the frequency domain is 1); and the "S" parameter corresponds to the relative RE offsets of all symbols defined relative to the RE offset of the first symbol in the PRS resource in the frequency domain (for example, S={0, 2, 1, 3, 0, 2, 1, 3} indicates that the relative RE offset of the starting symbol (or first symbol) of the PRS resource relative to K is 0; the relative RE offset of the second symbol of the PRS resource relative to K is 2; the relative RE offset of the third symbol of the PRS resource relative to K is 1...).

[0081] If the second UL PRS configuration has the following parameters, L=1; N=8; C=4; K=0, 1, 2, 3, there are 4 different UL PRS resources, depending on the different K values, and the corresponding resource mapping patterns are in Figure 5 As shown in FIG, in which some UL PRS resources (ie, when K=1, 2, 3) are mapped to some resource elements (REs). Figure 4 UL PRS resource conflicts (e.g., interference) in.

[0082] Figure 5 4 resource mapping patterns based on the second UL PRS configuration according to the conventional system are shown. As shown in the figure, according to the second UL PRS configuration, the resource elements in each time-frequency diagram can be unmapped (in Figure 5 ) or mapped (displayed as a "white box" in Figure 5Interference Figure 4 The mapped resource elements (REs) in the mapping resource elements (REs) are marked with an "X".

[0083] If the third UL PRS configuration has the following parameters, L=2; N=8; C=4; K=0, 1, 2, 3, there are 4 different UL PRS resources, depending on the different K values, and the corresponding resource mapping patterns are in Figure 6 As shown in FIG, in which some UL PRS resources (ie, when K=1, 3) are mapped to some resource elements (REs). Figure 4 UL PRS resource conflicts (e.g., interference) in.

[0084] Figure 6 4 resource mapping patterns based on the second UL PRS configuration according to the conventional system are shown. As shown in the figure, according to the second UL PRS configuration, the resource elements in each time-frequency diagram can be unmapped (in Figure 6 ) or mapped (displayed as a "white box" in Figure 6 Interference Figure 4 The mapped resource elements (REs) in the mapping resource elements (REs) are marked with an "X".

[0085] 2.2. Enhanced Mapping Mechanism (Example 2-1)

[0086] As discussed herein, this portion of the disclosure relates to an enhanced mapping mechanism that eliminates and / or mitigates technical problems associated with the conventional mapping mechanism of Example 1-1.

[0087] In some embodiments, the frequency offset (S) may be determined by the number of symbols (N) and / or the comb size (C) in a conventional design (sometimes referred to herein as a "conventional system"). To mitigate interference, in some embodiments, the frequency offset may also depend on the starting symbol (L) of the PRS within a slot.

[0088] In some embodiments, the BS and / or UE may rotate each element of the frequency offset to the left according to the value of L (the starting symbol of the PRS in the time slot). In other words, a left cyclic shift is performed on each element of the sequence (or "frequency offset") according to the time domain position of the reference signal (or "the starting symbol of the PRS in the time slot"). For example, if the frequency offset is S = {0, 3, 1, 4, 2, 5}, then when L = 0, the frequency offset remains unchanged; when L = 1, the frequency offset is replaced by S = {3, 1, 4, 2, 5, 0}; when L = 2, the frequency offset is replaced by S = {1, 4, 2, 5, 0, 3}; and so on.

[0089] In some embodiments, the BS and / or UE may rotate each element of the frequency offset to the right according to the value of L (the starting symbol of the PRS in the time slot). In other words, a right cyclic shift is performed on each element of the sequence (or "frequency offset") according to the time domain position of the reference signal (or "the starting symbol of the PRS in the time slot"). For example, if the frequency offset is S = {0, 3, 1, 4, 2, 5}, then when L = 0, the frequency offset remains unchanged; when L = 1, the frequency offset is replaced by S = {5, 0, 3, 1, 4, 2}; when L = 2, the frequency offset is replaced by S = {2, 5, 0, 3, 1, 4}; and so on.

[0090] In some embodiments, whether rotation applies can be configured by signaling. In some embodiments, whether the rotation is on the left or right side can be configured by signaling. In some embodiments, rotation does not apply to instances where C=2. In some embodiments, rotation does not apply to instances where N=2.

[0091] For the enhanced mapping mechanism of Example 2-1, in some embodiments, all configurations are the same as the conventional mapping mechanism of the second UL PRS configuration in Example 1-1 (described above), except for the frequency offset (assuming that the rotation is on the left in this example). That is, compared with the second UL PRS resource in the conventional mapping mechanism of Example 1-1, the frequency offset can be replaced with S = {2, 1, 3, 0, 2, 1, 3, 0} because the starting symbol of the PRS in the time slot is L = 1.

[0092] Therefore, there are 4 different UL PRS resources, depending on the different K values ​​(ie, K = 0, 1, 2, 3), and the corresponding resource mapping patterns are in Figure 7 As shown in FIG, there is only one UL PRS resource (ie, when K=0) with Figure 4 Therefore, it is easier for the scheduler to avoid interference between different PRS resources.

[0093] Figure 7 An example time-frequency diagram according to Example 2-1 of an embodiment of the present disclosure is shown. As shown in the figure, the resource elements in each time-frequency diagram can be unmapped (in Figure 7 ') or mapped (in Figure 7 Interference Figure 4 The mapped resource elements (REs) in the mapping resource elements (REs) are marked with an "X".

[0094] For the enhanced mapping mechanism of Example 2-1, in some embodiments, all configurations are the same as the conventional mapping mechanism of the third UL PRS configuration in Example 1-1 (described above), except for the frequency offset (assuming that the rotation is on the left in this example). That is, compared with the third UL PRS resource in the conventional mapping mechanism of Example 1-1, the frequency offset can be replaced with S = {1, 3, 0, 2, 1, 3, 0, 2} because the starting symbol of the PRS in the time slot is L = 2.

[0095] Therefore, there are 4 different UL PRS resources, depending on the different K values ​​(ie, K = 0, 1, 2, 3), and the corresponding resource mapping patterns are in Figure 8 As shown in FIG, there is only one UL PRS resource (ie, when K=0) with Figure 4 Therefore, it is easier for the scheduler to avoid interference between different PRS resources.

[0096] Figure 8 An example time-frequency diagram according to Example 2-1 of an embodiment of the present disclosure is shown. As shown in the figure, the resource elements in each time-frequency diagram can be unmapped (in Figure 8 ') or mapped (in Figure 8 Interference Figure 4 The mapped resource elements (REs) in the mapping resource elements (REs) are marked with an "X".

[0097] 3. Mapping of downlink PRS resources when L = 0, N = 6, C = 6, K = 0

[0098] This part of the disclosure discusses the mapping of downlink (DL) PRS resources when L=0, N=6, C=6, K=0.

[0099] 3.1. Conventional Mapping Mechanism (Example 1-2)

[0100] The first DL PRS configuration has the following parameters: L=0; N=6; C=6; K=0; resulting in a frequency offset S={0, 3, 1, 4, 2, 5} defining a specific DL PRS resource, and the corresponding resource mapping pattern is Figure 9 For example, Figure 9 900 includes a frequency axis 902 corresponding to a subcarrier in a resource block (RB) and a time axis 904 corresponding to a symbol in a time slot. The time-frequency diagram 900 includes a plurality of resource elements, each resource element corresponding to a subcarrier and a symbol, depending on the position on the time-frequency diagram 900. Figure 9As shown, according to the resource mapping pattern mentioned above, the resource element can be unmapped (in Figure 9 906) or mapped (in Figure 9 The "L" parameter corresponds to the starting symbol of the PRS resource in the time slot (for example, L=0 indicates that the starting symbol of the PRS resource in the time slot is the first symbol); the "N" parameter corresponds to the number of symbols of each PRS resource in the time slot (for example, N=6 indicates that the number of symbols of each PRS resource in the time slot is 6); the "C" parameter corresponds to the resource element spacing in each symbol of the PRS resource (for example, C=6 indicates that the resource element spacing in each symbol of the PRS resource is 6); and the "K" parameter corresponds to the resource element (RE) in the frequency domain of the first symbol in the PRS resource. offset (for example, K=0 indicates that the resource element (RE) offset of the first symbol in the PRS resource in the frequency domain is 1); and an "S" parameter, which corresponds to the relative RE offset of all symbols defined relative to the RE offset of the first symbol in the PRS resource in the frequency domain (for example, S={0, 3, 1, 4, 2, 5} indicates that the relative RE offset of the starting symbol (or first symbol) of the PRS resource relative to K is 0; the relative RE offset of the second symbol of the PRS resource relative to K is 3; the relative RE offset of the third symbol of the PRS resource relative to K is 1...).

[0101] If the second UL PRS configuration has the following parameters, L=2; N=6; C=6; K=0, 1, 2, 3, 4, 5, there are 6 different DL PRS resources, depending on the different values ​​of K, and the corresponding resource mapping patterns are Figure 10 As shown in FIG, in which some DL PRS resources (ie, when K=3, 4) are mapped to some resource elements (REs). Figure 9 DL PRS resource conflicts (eg, interference) in the DL PRS.

[0102] Figure 10 6 resource mapping patterns based on the second DL PRS configuration according to the conventional system are shown. As shown in the figure, according to the second DL PRS configuration, the resource elements in each time-frequency diagram can be unmapped (in Figure 10 ') or mapped (in Figure 10 Interference Figure 9 The mapped resource elements (REs) in the mapping resource elements (REs) are marked with an "X".

[0103] If the third DL PRS configuration has the following parameters: L=2; N=6; C=6; K=0, 1, 2, 3, 4, 5, there are 6 different DL PRS resources, depending on the different values ​​of K, and the corresponding resource mapping patterns are in Figure 11 As shown in FIG, in which in some mapped resource elements (REs), one DL PRS resource (ie, when K=1) is associated with Figure 9 DL PRS resource conflicts (eg, interference) in the DL PRS.

[0104] Figure 11 6 resource mapping patterns based on the second DL PRS configuration according to the conventional system are shown. As shown in the figure, according to the second DL PRS configuration, the resource elements in each time-frequency diagram can be unmapped (in Figure 11 ') or mapped (in Figure 11 Interference Figure 9 The mapped resource elements (REs) in the mapping resource elements (REs) are marked with an "X".

[0105] 3.2. Enhanced Mapping Mechanism (Example 2-2)

[0106] As discussed herein, this portion of the disclosure relates to an enhanced mapping mechanism that eliminates and / or mitigates technical problems associated with the conventional mapping mechanisms of Examples 1-2.

[0107] In some embodiments, the frequency offset (S) may be determined by the number of symbols (N) and / or the comb size (C) in a conventional design (sometimes referred to herein as a "conventional system"). To mitigate interference, in some embodiments, the frequency offset may also depend on the starting symbol (L) of the PRS within a slot.

[0108] In some embodiments, the BS and / or UE may rotate each element of the frequency offset to the left according to the value of L (the starting symbol of the PRS in the time slot). In other words, a left cyclic shift is performed on each element of the sequence (or "frequency offset") according to the time domain position of the reference signal (or "the starting symbol of the PRS in the time slot"). For example, if the frequency offset is S = {0, 3, 1, 4, 2, 5}, then when L = 0, the frequency offset remains unchanged; when L = 1, the frequency offset is replaced by S = {3, 1, 4, 2, 5, 0}; when L = 2, the frequency offset is replaced by S = {1, 4, 2, 5, 0, 3}; and so on.

[0109] In some embodiments, the BS and / or UE may rotate each element of the frequency offset to the right according to the value of L (the starting symbol of the PRS in the time slot). In other words, a right cyclic shift is performed on each element of the sequence (or "frequency offset") according to the time domain position of the reference signal (or "the starting symbol of the PRS in the time slot"). For example, if the frequency offset is S = {0, 3, 1, 4, 2, 5}, then when L = 0, the frequency offset remains unchanged; when L = 1, the frequency offset is replaced by S = {5, 0, 3, 1, 4, 2}; when L = 2, the frequency offset is replaced by S = {2, 5, 0, 3, 1, 4}; and so on.

[0110] In some embodiments, whether rotation applies can be configured by signaling. In some embodiments, whether the rotation is on the left or right side can be configured by signaling. In some embodiments, rotation does not apply to instances where C=2. In some embodiments, rotation does not apply to instances where N=2.

[0111] For the enhanced mapping mechanism of Example 2-2, in some embodiments, all configurations are the same as the conventional mapping mechanism of the second DL PRS configuration in Example 1-2 (described above), except for the frequency offset (assuming that the rotation is on the left in this example). That is, compared with the second DL PRS resource in the conventional mapping mechanism of Example 1-2, the frequency offset can be replaced with S = {3, 1, 4, 2, 5, 0} because the starting symbol of the PRS in the time slot is L = 1.

[0112] Therefore, there are 6 different DL PRS resources, depending on the different K values ​​(ie, K = 0, 1, 2, 3, 4, 5), and the corresponding resource mapping patterns are in Figure 12 As shown in FIG, there is only one DL PRS resource (ie, when K=0) with Figure 9 Therefore, it is easier for the scheduler to avoid interference between different PRS resources.

[0113] Figure 12 An example time-frequency diagram according to Example 2-2 of an embodiment of the present disclosure is shown. As shown in the figure, the resource elements in each time-frequency diagram can be unmapped (in Figure 12 ) or mapped (displayed as a "white box" in Figure 12 Interference Figure 9 The mapped resource elements (REs) in the mapping resource elements (REs) are marked with an "X".

[0114] For the enhanced mapping mechanism of Example 2-2, in some embodiments, all configurations are the same as the conventional mapping mechanism of the third DL PRS configuration in Example 1-2 (described above), except for the frequency offset (assuming that the rotation is on the left in this example). That is, compared with the third DL PRS resource in the conventional mapping mechanism of Example 1-2, the frequency offset can be replaced with S = {1, 4, 2, 5, 0, 3} because the starting symbol of the PRS in the time slot is L = 2.

[0115] Therefore, there are 6 different DL PRS resources, depending on the different K values ​​(ie, K = 0, 1, 2, 3, 4, 5), and the corresponding resource mapping patterns are in Figure 13 As shown in FIG, there is only one DL PRS resource (ie, when K=0) with Figure 9 Therefore, it is easier for the scheduler to avoid interference between different PRS resources.

[0116] Figure 13 An example time-frequency diagram according to Example 2-2 of an embodiment of the present disclosure is shown. As shown in the figure, the resource elements in each time-frequency diagram can be unmapped (in Figure 13 ') or mapped (in Figure 13 Interference Figure 9 The mapped resource elements (REs) in the mapping resource elements (REs) are marked with an "X".

[0117] 4. Mapping of downlink PRS resources when L = 0, N = 12, C = 12, K = 0

[0118] This part of the disclosure discusses the mapping of downlink (DL) PRS resources when L=0, N=12, C=12, K=0.

[0119] 4.1. Conventional Mapping Mechanism (Examples 1-3)

[0120] The first DL PRS configuration has the following parameters: L=0; N=12; C=12; K=0; resulting in a frequency offset S={0, 6, 3, 9, 1, 7, 4, 10, 2, 8, 5, 11} defining a specific DL PRS resource, and the corresponding resource mapping pattern is Figure 14 For example, Figure 14 14 shows a resource mapping pattern based on a first UL PRS configuration according to a conventional system. The time-frequency diagram 1400 includes a frequency axis 1402 corresponding to subcarriers in a resource block (RB) and a time axis 1404 corresponding to symbols in a time slot. The time-frequency diagram 1400 includes a plurality of resource elements, each resource element corresponding to a subcarrier and a symbol, depending on the position on the time-frequency diagram 1400. Figure 14As shown, according to the resource mapping pattern mentioned above, the resource element can be unmapped (in Figure 14 ” in the , e.g. RE 1406) or mapped (in Figure 14 1408). The "L" parameter corresponds to the starting symbol of the PRS resource in the time slot (for example, L=0 indicates that the starting symbol of the PRS resource in the time slot is the first symbol); the "N" parameter corresponds to the number of symbols of each PRS resource in the time slot (for example, N=14 indicates that the number of symbols of each PRS resource in the time slot is 12); the "C" parameter corresponds to the resource element spacing in each symbol of the PRS resource (for example, C=12 indicates that the resource element spacing in each symbol of the PRS resource is 12); the "K" parameter corresponds to the resource element (RE) offset of the first symbol in the PRS resource in the frequency domain (for example, , K=0 indicates that the resource element (RE) offset of the first symbol in the PRS resource in the frequency domain is 1); and an "S" parameter, which corresponds to the relative RE offsets of all symbols defined relative to the RE offset of the first symbol in the PRS resource in the frequency domain (for example, S={0, 6, 3, 9, 1, 7, 4, 10, 2, 8, 5, 11} indicates that the relative RE offset of the starting symbol (or first symbol) of the PRS resource relative to K is 0; the relative RE offset of the second symbol of the PRS resource relative to K is 6; the relative RE offset of the third symbol of the PRS resource relative to K is 3...).

[0121] If the second UL PRS configuration has the following parameters, L=1; N=12; C=12; K=0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, then there are 12 different DL PRS resources, depending on the different values ​​of K, and the corresponding resource mapping patterns are in Figure 15 As shown in FIG, in which some DL PRS resources (ie, when K=4, 6, 9) are mapped to some resource elements (REs). Figure 14 DL PRS resource conflicts (eg, interference) in the DL PRS.

[0122] Figure 15 12 resource mapping patterns based on the second DL PRS configuration according to the conventional system are shown. As shown in the figure, according to the second DL PRS configuration, the resource elements in each time-frequency diagram can be unmapped (in Figure 15 ') or mapped (in Figure 15 Interference Figure 14 The mapped resource elements (REs) in the mapping resource elements (REs) are marked with an "X".

[0123] If the third UL PRS configuration has the following parameters: L=2; N=12; C=12; K=0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, there are 12 different DL PRS resources, depending on the different values ​​of K, and the corresponding resource mapping patterns are in Figure 16 As shown in FIG, in which some DL PRS resources (ie, when K=3, 10) are mapped to some resource elements (REs). Figure 14 UL PRS resource conflicts (e.g., interference) in.

[0124] Figure 16 12 resource mapping patterns based on the second DL PRS configuration according to the conventional system are shown. As shown in the figure, according to the second DL PRS configuration, the resource elements in each time-frequency diagram can be unmapped (in Figure 16 ') or mapped (in Figure 16 Interference Figure 14 The mapped resource elements (REs) in the mapping resource elements (REs) are marked with an "X".

[0125] 4.2. Enhanced Mapping Mechanism (Example 2-3)

[0126] As discussed herein, this portion of the disclosure relates to an enhanced mapping mechanism that eliminates and / or mitigates technical problems associated with the conventional mapping mechanisms of Examples 1-3.

[0127] In some embodiments, the frequency offset (S) may be determined by the number of symbols (N) and / or the comb size (C) in a conventional design (sometimes referred to herein as a "conventional system"). To mitigate interference, in some embodiments, the frequency offset may also depend on the starting symbol (L) of the PRS within a slot.

[0128] In some embodiments, the BS and / or UE may rotate each element of the frequency offset to the left according to the value of L (the starting symbol of the PRS in the time slot). In other words, a left cyclic shift is performed on each element of the sequence (or "frequency offset") according to the time domain position of the reference signal (or "the starting symbol of the PRS in the time slot"). For example, if the frequency offset is S = {0, 3, 1, 4, 2, 5}, then when L = 0, the frequency offset remains unchanged; when L = 1, the frequency offset is replaced by S = {3, 1, 4, 2, 5, 0}; when L = 2, the frequency offset is replaced by S = {1, 4, 2, 5, 0, 3}; and so on.

[0129] In some embodiments, the BS and / or UE may rotate each element of the frequency offset to the right according to the value of L (the starting symbol of the PRS in the time slot). In other words, a right cyclic shift is performed on each element of the sequence (or "frequency offset") according to the time domain position of the reference signal (or "the starting symbol of the PRS in the time slot"). For example, if the frequency offset is S = {0, 3, 1, 4, 2, 5}, then when L = 0, the frequency offset remains unchanged; when L = 1, the frequency offset is replaced by S = {5, 0, 3, 1, 4, 2}; when L = 2, the frequency offset is replaced by S = {2, 5, 0, 3, 1, 4}; and so on.

[0130] In some embodiments, whether rotation applies can be configured by signaling. In some embodiments, whether the rotation is on the left or right side can be configured by signaling. In some embodiments, rotation does not apply to instances where C=2. In some embodiments, rotation does not apply to instances where N=2.

[0131] For the enhanced mapping mechanism of Examples 2-3, in some embodiments, all configurations are the same as the conventional mapping mechanism of the second DL PRS configuration in Examples 1-3 (described above), except for the frequency offset (assuming that the rotation is on the left in this example). That is, compared with the second DL PRS resource in the conventional mapping mechanism of Examples 1-3, the frequency offset can be replaced with S = {6, 3, 9, 1, 7, 4, 10, 2, 8, 5, 11, 0} because the starting symbol of the PRS in the time slot is L = 1.

[0132] Therefore, there are 12 different DL PRS resources, depending on different K values ​​(i.e., K = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10), and the corresponding resource mapping patterns are in Figure 17 As shown in FIG, there is only one DL PRS resource (ie, when K=0) with Figure 14 Therefore, it is easier for the scheduler to avoid interference between different PRS resources.

[0133] Figure 17 An example time-frequency diagram according to Example 2-3 of an embodiment of the present disclosure is shown. As shown, the resource elements in each time-frequency diagram may be unmapped (in Figure 17 ) or mapped (displayed as a "white box" in Figure 17 Interference Figure 4 The mapped resource elements (REs) in the mapping resource elements (REs) are marked with an "X".

[0134] For the enhanced mapping mechanism of Examples 2-3, in some embodiments, all configurations are the same as the conventional mapping mechanism of the third DL PRS configuration in Examples 1-3 (described above), except for the frequency offset (assuming that the rotation is on the left in this example). That is, compared with the third DL PRS resource in the conventional mapping mechanism of Examples 1-3, the frequency offset can be replaced with S = {3, 9, 1, 7, 4, 10, 2, 8, 5, 11, 0, 6} because the starting symbol of the PRS in the time slot is L = 2.

[0135] Therefore, there are 12 different DL PRS resources, depending on different K values ​​(i.e., K = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11), and the corresponding resource mapping patterns are in Figure 18 As shown in FIG, there is only one DL PRS resource (ie, when K=0) with Figure 14 Therefore, it is easier for the scheduler to avoid interference between different PRS resources.

[0136] Figure 18 An example time-frequency diagram according to Example 2-3 of an embodiment of the present disclosure is shown. As shown, the resource elements in each time-frequency diagram may be unmapped (in Figure 18 ) or mapped (shown as a "white" box in Figure 18 Interference Figure 14 The mapped resource elements (REs) in the mapping resource elements (REs) are marked with an "X".

[0137] 5. Illustrative Methods for Mapping PRS Resources

[0138] Figure 19 is a flow chart illustrating a method for interference management according to some embodiments of the present disclosure. Depending on the particular embodiment, more, fewer, or different operations may be performed in the method. In some embodiments, some or all of the operations of method 1900 may be performed by, for example, Figure 2 In some operations, some or all of the operations of method 1900 may be performed by a wireless communication node such as BS 202 in the embodiment of the present invention. Figure 2 Each operation may be reordered, added, deleted, or repeated.

[0139] As shown, method 1900 includes, in some embodiments, an operation 1902 of configuring, by a wireless communication node, a resource mapping pattern for a reference signal. Method 1900 includes an operation 1904 of updating, by the wireless communication node, the resource mapping pattern by changing a sequence of a plurality of frequency domain offsets representing the reference signal relative to the frequency domain position of the reference signal based on the time domain position of the reference signal.

[0140] Figure 20 is a flow chart illustrating a method for interference management according to some embodiments of the present disclosure. Depending on the particular embodiment, more, fewer, or different operations may be performed in the method. In some embodiments, some or all of the operations of method 2000 may be performed by, for example, Figure 2 In some operations, some or all of the operations of method 2000 may be performed by a wireless communication node such as BS 202 in the embodiment of the present invention. Figure 2 Each operation may be reordered, added, deleted, or repeated.

[0141] As shown, method 2000 includes, in some embodiments, an operation 2002 of receiving a resource mapping pattern of a reference signal by a wireless communication device. Method 2000 includes an operation 2004 of updating the resource mapping pattern by the wireless communication device based on a time domain position of the reference signal by changing a sequence of a plurality of frequency domain offsets representing the reference signal relative to the frequency domain position of the reference signal.

[0142] Although various embodiments of the present solution have been described above, it should be understood that they are presented by way of example only and not by way of limitation. Similarly, various diagrams may depict example architectures or configurations, which are provided to enable one of ordinary skill in the art to understand the example features and functions of the present solution. However, such persons will understand that the present solution is not limited to the example architectures or configurations shown, but may be implemented using a variety of alternative architectures and configurations. In addition, one of ordinary skill in the art will understand that one or more features of one embodiment may be combined with one or more features of another embodiment described herein. Therefore, the breadth and scope of the present solution should not be limited by any of the above-described exemplary embodiments.

[0143] It should also be understood that any reference to an element herein using designations such as "first," "second," etc., does not generally limit the quantity or order of those elements. Rather, these designations may be used herein as a convenient means of distinguishing between two or more elements or multiple instances of an element. Thus, a reference to a first and a second element does not mean that only two elements may be employed, nor does it mean that the first element must precede the second element in some manner.

[0144] Furthermore, those skilled in the art will appreciate that information and signals may be represented using any of a variety of different techniques. For example, references to data, instructions, commands, information, signals, bits, and symbols in the foregoing description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0145] Those skilled in the art will further understand that any of the various illustrative logical blocks, modules, processors, devices, circuits, methods, and functions described in connection with the various aspects disclosed herein may be implemented by electronic hardware (e.g., digital implementations, analog implementations, or a combination of both), firmware, various forms of programs containing instructions (e.g., computer program products), or design code (referred to herein as "software" or "software modules" for convenience), or any combination of these technologies.

[0146] To clearly illustrate this interchangeability of hardware, firmware, and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware, firmware, or software, or a combination of these techniques, depends on the specific application and the design constraints imposed on the overall system. A skilled person may implement the described functionality in various ways for each specific application, but such implementation decisions do not depart from the scope of this disclosure.

[0147] In addition, one of ordinary skill in the art will appreciate that the various exemplary logic blocks, modules, devices, components, and circuits described herein may be implemented within or performed by an integrated circuit (IC) comprising a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic device, or any combination thereof. The logic blocks, modules, and circuits may further include an antenna and / or a transceiver to communicate with various components within a network or within a device. A general purpose processor may be a microprocessor, but alternatively, the processor may be any conventional processor, controller, or state machine. The processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in combination with a DSP core, or any other suitable configuration to perform the functions described herein.

[0148] If implemented in software, the functionality may be stored as one or more instructions or codes on a computer-readable medium. Thus, the steps of the method or algorithm of the solutions herein may be implemented as software stored on a computer-readable medium. Computer-readable media include computer storage media and communication media, which include any media that enable a computer program or code to be transferred from one place to another. A storage medium may be any available medium that can be accessed by a computer. By way of example and not limitation, such computer-readable media may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired program code in the form of instructions or data structures and that can be accessed by a computer.

[0149] As used herein, the term "module" refers to software, firmware, hardware, and any combination of these elements for performing the relevant functions described herein. Additionally, for the purposes of discussion, various modules are described as discrete modules. However, it will be apparent to one of ordinary skill in the art that two or more modules may be combined to form a single module that performs the relevant functions according to embodiments of the present solution.

[0150] In addition, in embodiments of the present solution, memories or other storage devices and communication components may be employed. It will be understood that, for clarity, the above description has described embodiments of the present solution with reference to different functional units and processors. However, it will be apparent that any suitable distribution of functionality between different functional units, processing logic elements, or domains may be used without departing from the examples of the present solution. For example, functions illustrated as being performed by separate processing logic elements or controllers may be performed by the same processing logic element or controller. Therefore, references to specific functional units are merely references to suitable means for providing the described functionality, rather than indicating a strict logical or physical structure or organization.

[0151] Various modifications to the embodiments described in this disclosure will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments without departing from the scope of this disclosure. Therefore, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the novel features and principles disclosed herein as set forth in the following claims.

Claims

1. A wireless communication method, comprising: The wireless communication node configures a resource mapping pattern of a reference signal; as well as updating, by the wireless communication node, the resource mapping pattern by changing a sequence of a plurality of frequency domain offsets of the reference signal relative to the frequency domain position of the reference signal based on the time domain position of the reference signal; as well as Signaling indicating whether to perform a left cyclic shift or a right cyclic shift on each element of the sequence according to the time domain position of the reference signal is sent by the wireless communication node to the wireless communication device. 2 . The wireless communication method according to claim 1 , wherein changing the sequence further comprises performing the right cyclic shift on each element of the sequence according to the time domain position of the reference signal. 3 . The wireless communication method according to claim 1 , wherein changing the sequence further comprises performing the left cyclic shift on each element of the sequence according to the time domain position of the reference signal.

4. The wireless communication method according to claim 1, further comprising: The wireless communication node sends second signaling to the wireless communication device, indicating whether updating the resource mapping pattern is applicable.

5. The wireless communication method according to claim 1 , further comprising: Determining, by the wireless communication node, that a total time domain number of time domain symbols of the reference signal is equal to 2; as well as The wireless communication node determines that updating the resource mapping pattern is not applicable.

6. The wireless communication method according to claim 1, further comprising: Determining, by the wireless communication node, that a frequency domain period of the reference signal is equal to 2; as well as The wireless communication node determines that updating the resource mapping pattern is not applicable.

7. A wireless communication method, comprising: receiving a resource mapping pattern of a reference signal by a wireless communication device; updating, by the wireless communication device, the resource mapping pattern by changing a sequence of a plurality of frequency domain offsets representing the reference signal relative to the frequency domain position of the reference signal based on the time domain position of the reference signal; as well as Signaling indicating whether to perform a left cyclic shift or a right cyclic shift on each element of the sequence according to the time domain position of the reference signal is received by the wireless communication device from a wireless communication node. 8 . The wireless communication method according to claim 7 , wherein changing the sequence further comprises performing the right cyclic shift on each element of the sequence according to the time domain position of the reference signal. 9 . The wireless communication method according to claim 7 , wherein changing the sequence further comprises performing the left cyclic shift on each element of the sequence according to the time domain position of the reference signal.

10. The wireless communication method according to claim 7, further comprising: Second signaling is received by the wireless communication device from a wireless communication node indicating whether updating the resource mapping pattern is applicable. 11 . The wireless communication method according to claim 7 , wherein when the total number of time-domain symbols of the reference signal is equal to 2, it indicates that updating the resource mapping pattern is not applicable.

12. The wireless communication method according to claim 7, wherein: When the frequency domain period of the reference signal is equal to 2, it indicates that updating the resource mapping pattern is not applicable.

13. A wireless communication apparatus comprising at least one processor configured to implement the method according to any one of claims 1 to 12.

14. A computer program product comprising computer readable program medium code stored thereon, which, when executed by at least one processor, causes the at least one processor to implement the method according to any one of claims 1 to 12.

Images