Comb offset hopping and cyclic shift hopping of sounding reference signals.

Abstract

The arrangements described herein relate to a system, method, apparatus, and non-transitory computer-readable medium for a wireless communication device to receive at least one of a first parameter indicating a subset of comb offsets or a second parameter indicating a subset of cyclic shifts from a network device. The wireless communication device determines at least one of a comb offset or a cyclic shift for each sounding reference signal (SRS) port associated with an SRS resource based on a transmission time and at least one of the first parameter or the second parameter. The wireless communication device transmits an SRS to the network device according to at least one of the comb offsets or the cyclic shifts.

Description

[Technical field]

[0001] FIELD OF THE DISCLOSURE The present disclosure relates generally to wireless communications, and more particularly to comb offset hopping and cyclic shift hopping of sounding reference signals (SRS). [Background technology]

[0002] In time division duplex (TDD) coherent joint transmission (CJT), comb offset hopping and cyclic shift hopping may randomize interference between SRS transmitted from different user equipments (UEs) served by different transmission and reception points (TRPs). Summary of the Invention [Means for solving the problem]

[0003] The exemplary arrangements disclosed herein are intended to solve problems associated with one or more problems presented in the prior art, as well as provide additional features that will be readily apparent by reference to the following detailed description in conjunction with the accompanying drawings. In accordance with various arrangements, exemplary systems, methods, devices, and computer program products are disclosed herein. However, it will be understood that these arrangements are presented by way of example and not limitation, and it will be apparent to one of ordinary skill in the art upon reading this disclosure that various modifications to the disclosed arrangements can be made while remaining within the scope of the present disclosure.

[0004] In some arrangements, a wireless communication device (e.g., a UE) receives at least one of a first parameter indicating a subset of comb offsets or a second parameter indicating a subset of cyclic shifts from a network device. The UE determines at least one of a comb offset or a cyclic shift for each sounding reference signal (SRS) port associated with an SRS resource based on a transmission time and the at least one of the first parameter or the second parameter. The UE transmits an SSRS to the network device according to the at least one of the comb offsets or the cyclic shifts.

[0005] In some arrangements, the network device transmits at least one of a first parameter indicating a subset of the comb offsets or a second parameter indicating a subset of the cyclic shifts to the UE. The UE determines at least one of the comb offsets or the cyclic shifts for each SRS port associated with the SRS resource based on the transmission time and the at least one of the first parameter or the second parameter. The network device receives the SRS from the UE according to the at least one of the comb offsets or the cyclic shifts.

[0006] These and other aspects and their implementations are described in greater detail in the drawings, specification, and claims. [Brief description of the drawings]

[0007] Various exemplary arrangements of the present solution are described in detail below with reference to the following figures or drawings. The drawings are provided for illustrative purposes only and merely illustrate exemplary arrangements of the present solution to facilitate the reader's understanding of the present solution. Thus, the drawings should not be considered as limiting the breadth, scope, or applicability of the present solution. Please note that for clarity and ease of illustration, the drawings are not necessarily drawn to scale.

[0008] [Figure 1]FIG. 1 is a schematic block diagram illustrating an exemplary wireless communication system according to various configurations.

[0009] [Diagram 2] FIG. 2 shows a block diagram of an example base station (BS) and an example user equipment (UE) according to some arrangements.

[0010] [Diagram 3] FIG. 3 is a flow chart diagram illustrating an example method for determining comb offsets and cyclic shift hopping for SRS ports of SRS resources according to various constellations.

[0011] [Figure 4] FIG. 4 is a diagram showing the configuration of comb offset hopping with various arrangements.

[0012] [Diagram 5] FIG. 5 is a diagram illustrating the implementation of comb offset hopping with various configurations.

[0013] [Figure 6] FIG. 6 is a diagram showing the configuration of comb offset hopping with various arrangements.

[0014] [Figure 7] FIG. 7 is a diagram illustrating the implementation of comb offset hopping with various arrangements.

[0015] [Figure 8] FIG. 8 is a diagram showing the configuration of comb offset hopping with various arrangements.

[0016] [Figure 9] FIG. 9 is a diagram illustrating the implementation of comb offset hopping with various arrangements.

[0017] [Figure 10]FIG. 10 is a diagram showing the configuration of comb offset hopping with various arrangements.

[0018] [Figure 11] FIG. 11 is a diagram illustrating the implementation of comb offset hopping with various configurations.

[0019] [Figure 12] FIG. 12 is a diagram showing configurations of cyclic shift hopping with various arrangements.

[0020] [Figure 13] FIG. 13 is a diagram illustrating the implementation of cyclic shift hopping with various constellations.

[0021] [Figure 14] FIG. 14 is a diagram showing configurations of cyclic shift hopping with various arrangements.

[0022] [Figure 15] FIG. 15 is a diagram illustrating the implementation of cyclic shift hopping with various constellations.

[0023] [Figure 16] FIG. 16 is a diagram showing configurations of cyclic shift hopping with various arrangements.

[0024] [Figure 17] FIG. 17 is a diagram illustrating the implementation of cyclic shift hopping with various constellations.

[0025] [Figure 18] FIG. 18 is a diagram showing configurations of cyclic shift hopping with various arrangements.

[0026] [Figure 19] FIG. 19 is a diagram illustrating the implementation of cyclic shift hopping with various constellations. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0027] In order to enable those skilled in the art to make and use the present solution, various exemplary arrangements of the present solution are described below with reference to the accompanying drawings. As will be apparent to those skilled in the art, after reading this disclosure, various modifications or changes to the examples described herein can be made without departing from the scope of the present solution. Thus, the present solution is not limited to the exemplary arrangements and applications described and illustrated herein. Furthermore, the specific order or hierarchy of steps in the methods disclosed herein is merely an example approach. Based on design preferences, the specific order or hierarchy of steps of the disclosed methods or processes can be rearranged while remaining within the scope of the present solution. Thus, those skilled in the art will understand that the methods and techniques disclosed herein present various steps or operations in a sample order, and that the present solution is not limited to the specific order or hierarchy presented, unless otherwise specified.

[0028] Some legacy UEs that do not support comb offset or cyclic shift hopping and new UEs that support comb offset and cyclic shift hopping may coexist in a cell, and the legacy and new UEs occupy two respective non-overlapping comb offset / cyclic shift subsets to maintain orthogonality between the legacy and new sounding reference signal (SRS) ports. In other words, comb offset / cyclic shift hopping may be restricted within a comb offset / cyclic shift subset. The arrangements disclosed herein relate to systems, methods, non-transitory computer-readable media, and apparatuses for configuring comb offset / cyclic shift subsets and performing comb offset / cyclic shift hopping when the subsets are configured.

[0029] FIG. 1 illustrates an example of a wireless communication system 100 supporting CJT according to various deployments. In the wireless communication system 100, the network side communication node, network device, or base station (BS) may include one or more of a next generation node B (gNB), an E-Utran node B (also known as an evolved node B, eNodeB, or eNB), a pico station, a femto station, a transmission / reception point (TRP), an access point (AP), or a node, etc. The terminal side node or user equipment (UE) may include a long-range communication system (e.g., a mobile device, a smartphone, a personal digital assistant (PDA), a tablet, a laptop computer, etc.) or a short-range communication system (e.g., a wearable device, a vehicle with a vehicular communication system, etc.). As illustrated, the system 100 includes BSs 110, 120, and 130 and UEs 140 and 150. In some deployments, the BSs 110, 120, and 130 may be referred to as wireless communication nodes, and the UEs 140 and 150 may be referred to as wireless communication devices.

[0030] As shown in FIG. 1, a BS 110 (e.g., a network device) may provide wireless communication services to UEs within a cell defined by a first boundary 112 and a second boundary 114 that surrounds an area larger than the first boundary 112. A UE 140 is located within the first boundary 112, and a UE 150 is located between the first boundary 112 and the second boundary 114 (within the second boundary 114 but not within the first boundary 112). The area between the first boundary 112 and the second boundary 114 is an edge cell. A UE (e.g., UE 150) located within the edge cell experiences reduced service (e.g., signal strength) than a UE (e.g., UE 140) located within the first boundary 112. The UE 140 may communicate with the BS 110 via a first communication channel. Similarly, the UE 150 may communicate with the BS 110 via a second communication channel.

[0031] The BS 120 may provide wireless communication services to UEs within a cell defined by a first boundary 122 and a second boundary 124 that surrounds a larger area than the first boundary 122. The UE 150 is located between the first boundary 122 and the second boundary 124 (within the second boundary 124 but not within the first boundary 122). The area between the first boundary 122 and the second boundary 124 is an edge cell. Similarly, UEs located within the edge cells experience reduced service (e.g., signal strength) than UEs located within the first boundary 122. The UE 150 may communicate with the BS 120 via a third communication channel.

[0032] The BS 130 may provide wireless communication services to UEs within a cell defined by a first boundary 132 and a second boundary 134 that surrounds a larger area than the first boundary 132. The area between the first boundary 132 and the second boundary 134 is an edge cell. Similarly, UEs located within the edge cell experience reduced service (e.g., signal strength) than UEs located within the first boundary 132.

[0033] TDD CJT is introduced in 5G Progressive New Radio (NR) to improve downlink capabilities for cell-edge UEs (e.g., UE 150 with respect to BS 110). In TDD CJT, a CJT UE (e.g., UE 150) transmits SRS toward multiple CJT TRPs (e.g., BSs 110 and 120). The BS may perform downlink CJT based on a precoder derived from the received SRS. From the perspective of a TRP, a CJT TRP (e.g., BS 110) receives SRS transmitted from both its serving UE (e.g., UE 140) and another TRP's serving UE (CJT UE, e.g., BS 120's serving UE 150). Due to SRS resource allocation per TRP, the SRS transmitted from serving UEs of different TRPs may be non-orthogonal and may interfere with each other. In addition to frequency hopping and group / sequence hopping, comb offset hopping and cyclic shift hopping of SRS may be used to randomize interference and improve CJT performance. The newly introduced comb offset / cyclic shift hopping may be restricted within a comb offset / cyclic shift subset to support coexistence of legacy and new UEs in a cell.

[0034] As used herein, legacy UEs (and SRS resources, their SRS ports) refer to UEs that do not support comb offset / cyclic shift hopping, and new UEs (and SRS resources, their SRS ports) refer to UEs that support comb offset / cyclic shift hopping.

[0035] 2 shows a block diagram of an example BS 202 (e.g., a network device) and an example UE 204 according to some arrangements. The BS 202 is an example of the BSs 110, 120, and 130. The UE 204 is an example of the UEs 140 and 150.

[0036] The BS 202 includes a BS transceiver module 210, a BS antenna 212, a BS processor module 214, a BS memory module 216, and a network communication module 218, each of which are coupled and interconnected as needed via a data communication bus 220. The UE 204 includes a UE transceiver module 230, a UE antenna 232, a UE memory module 234, and a UE processor module 236, each of which are coupled and interconnected as needed via a data communication bus 240. The BS 202 communicates with the UE 204 over a communication channel, which may be any wireless channel or other medium suitable for the transmission of data as described herein.

[0037] The BS 202 and the UE 204 may further include any number of modules other than those shown in FIG. 2. Those skilled in the art will appreciate that the various example blocks, modules, circuits, and processing logic described in connection with the implementations disclosed herein may be implemented in hardware, computer readable software, firmware, or any practical combination thereof. To clearly illustrate this compatibility and interoperability of hardware, firmware, and software, the various example components, blocks, modules, circuits, and steps have been described generally in terms of their functionality. Whether such functionality is implemented as hardware, firmware, or software may depend on the particular application and design constraints imposed on the overall system. Those familiar with the concepts described herein may implement such functionality in a manner suitable for each particular application, but such implementation decisions should not be construed as limiting the scope of the present disclosure.

[0038] According to some implementations, the UE transceiver 230 may be referred to herein as a UL transceiver including a radio frequency (RF) transmitter and an RF receiver, each including circuitry coupled to the antenna 232. Alternatively, a duplexing switch (not shown) may couple the UL transmitter or receiver to the UL antenna in a time-duplexed manner. Similarly, according to some implementations, the BS transceiver 210 may be referred to herein as a downlink (DL) transceiver including an RF transmitter and an RF receiver, each including circuitry coupled to the antenna 212. Alternatively, a DL duplexing switch may couple the DL transmitter or receiver to the DL antenna 212 in a time-duplexed manner. The operation of the two transceiver modules 210 and 230 may be coordinated in time such that the DL transmitter is coupled to the DL antenna 212 at the same time that the UL receiver circuitry is coupled to the UL antenna 232 to receive transmissions over the air transmission link. In some implementations, there is a truncated time synchronization with a minimum guard time between changes in duplexing direction.

[0039] The UE transceiver 230 and the BS transceiver 210 are configured to communicate over a wireless data communication link and cooperate with a suitably configured RF antenna arrangement 212 / 232 capable of supporting a particular wireless communication protocol and modulation scheme. In some exemplary implementations, the UE transceiver 210 and the BS transceiver 210 are configured to support industry standards, such as Long Term Evolution (LTE), emerging 5G and 6G standards, etc. However, it will be understood that the present disclosure is not necessarily limited to application to a particular standard and associated protocol. Rather, the UE transceiver 230 and the BS transceiver 210 may be configured to support alternative or additional wireless data communication protocols, including future standards or variants thereof.

[0040] The processor modules 214 and 236 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. As such, a processor may be realized as a microprocessor, a controller, a microcontroller, a state machine, etc. A processor may also be implemented as a combination of computing devices, for example, a combination of a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other such configuration.

[0041] Furthermore, the methods described in connection with the implementations disclosed herein may be implemented directly in hardware, firmware, software modules executed by the processor modules 214 and 236, respectively, or any practical combination thereof. The memory modules 216 and 234 may be realized as RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art. In this regard, the memory modules 216 and 234 may be coupled to the processor modules 210 and 230, respectively, such that the processor modules 210 and 230 can read information from and write information to the memory modules 216 and 234, respectively. The memory modules 216 and 234 may be integrated into the respective processor modules 210 and 230. In some implementations, the memory modules 216 and 234 may each include a cache memory for storing temporary variables or other intermediate information during execution of instructions executed by the processor modules 210 and 230, respectively. Each of the memory modules 216 and 234 may include non-volatile memory for storing instructions executed by the processor modules 210 and 230, respectively.

[0042] The network communications module 218 represents hardware, software, firmware, processing logic, and / or other components of the BS 202 that enable bidirectional communications between the BS transceiver 210 and other network components and communication nodes configured to communicate with the BS 202. For example, the network communications module 218 may be configured to support Internet or WiMAX traffic. In a typical deployment, without limitation, the network communications module 218 provides an 802.3 Ethernet interface to enable the BS transceiver 210 to communicate with conventional Ethernet-based computer networks. As such, the network communications module 218 may include a physical interface for connecting to a computer network (e.g., a Mobile Switching Center (MSC)).

[0043] The terms "configured for" and "configured to" as used herein with respect to a specified operation or function, and conjugations thereof, refer to a device, component, circuit, structure, machine, signal, etc. that is physically constructed, programmed, formatted, and / or arranged to perform a specified operation or function.

[0044] In some deployments where comb offset / cyclic shift hopping is enabled for an SRS resource, at each transmission opportunity, the comb offset / cyclic shift of each SRS port associated with the SRS resource is determined by the time of the transmission opportunity. FIG. 3 is a flow chart diagram illustrating an example method 300 for determining comb offset and cyclic shift hopping of SRS ports of an SRS resource according to various deployments. The method 300 may be performed using a system 100 including a UE 150 and a BS 120 (e.g., a network device). In some examples, the BS 120 transmits an indication to the UE 150 that at least one of the comb offset or cyclic shift hopping is enabled, and the UE 150 receives it from the BS 120. The indication may be provided via appropriate signaling or parameters, including higher layer parameters.

[0045] In some examples, examples of higher layer parameters include radio resource control (RRC) parameters, radio resource management (RRM) parameters, radio resource allocation (RRA) parameters, downlink control information (DCI), or physical downlink control channel (PDCCH).

[0046] The BS 120 transmits to the UE 150 at least one parameter that controls the configuration or decision for one or more comb offsets and / or one or more cyclic shifts of the SRS port. For example, at 310, the BS 120 transmits to the UE 150 at least one of a first parameter indicating a subset of comb offsets or a second parameter indicating a subset of cyclic shifts. At 320, the UE 150 receives from the BS 120 at least one of the first parameter indicating a subset of comb offsets or a second parameter indicating a subset of cyclic shifts. Each of the at least one first parameter and each of the at least one second parameter may be provided via appropriate signaling or parameters, including higher layer parameters. The comb offsets used to transmit the SRS are restricted to within the comb offset subset. The cyclic shifts used to transmit the SRS are restricted to within the cyclic shift subset. In some examples, the BS 120 transmits, and the UE 150 receives from the BS 120, at least one parameter indicative of an initialization identifier (ID) of the pseudo-random sequence c(i).

[0047] At 330, the UE 150 determines at least one of a comb offset or a cyclic shift for each SRS port associated with the SRS resource based on the transmission time and at least one of the first parameter or the second parameter. The SRS resource may be associated with multiple SRS ports. The SRS resource may include a time domain resource and a frequency domain resource.

[0048] At 340, the UE 150 transmits the SRS according to at least one of the comb offset or the cyclin shift to the BS 120. At 350, the BS 120 receives the SRS transmitted according to at least one of the comb offset or the cyclin shift.

[0049] In some examples, legacy and new SRS resources (e.g., SRS resources used by legacy and new UEs) are scheduled over overlapping orthogonal frequency division multiplexing (OFDM) symbols. The legacy and new SRS resources are configured on the same transmission comb. In examples where comb offset and / or cyclic shift hopping is not enabled, the legacy and new SRS resources do not occupy the same cyclic shift on the same comb offset. Such a configuration may be enabled or provided by a BS configuration transmitted to the UE.

[0050] In some deployments, for SRS resources configured with comb offset hopping, the SRS port p i Comb offset

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[0051] The subset of comb offsets is the upper layer parameter transmissionComb and the comb offset hopping offset

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[0052] In some instances,

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[0053] In some instances,

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[0054] In some examples, the comb offset hopping granularity is an integer equal to or greater than 1. The comb offset hopping granularity is selected from a set of candidate values. The set of candidate values ​​is determined based on the transmission comb. For example, the candidate values ​​of X are {1, 2, 4, 8}. K TC For =2, the candidate values ​​of X include {1,2}. TC For =4, the possible values ​​of X include {1, 2, 4}. TC For =8, candidate values ​​for X include {1, 2, 4, 8}. In some examples where X=1, a subset of the comb offsets is equivalent to the entire set of comb offsets.

[0055]

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[0057] Using higher layer parameters

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[0058]

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[0059] In some deployments, the multiple new SRS resources may be scheduled across overlapping OFDM symbols and overlapping frequency ranges (e.g., resource blocks (RBs)) to maintain orthogonality between the new SRS ports, and different new SRS resources may be configured with different subsets of the comb offsets. In some examples, the multiple new SRS resources are scheduled across overlapping OFDM symbols. The new SRS ports are orthogonal to one another. Different ones of the multiple new SRS resources are configured with different subsets of the comb offsets.

[0060] In some deployments, the multiple new SRS resources are scheduled across overlapping OFDM symbols and overlapping frequency ranges (e.g., RBs) to maintain orthogonality between the new SRS ports, and the different new SRS resources may be configured with the same subset of comb offsets. It is expected that the same initialization ID of c(i) is applied to all the new SRS resources. In some examples, the multiple new SRS resources are scheduled across overlapping orthogonal OFDM symbols. The new SRS ports are orthogonal to each other. The different ones of the multiple new SRS resources are configured with the same subset of comb offsets. The same initialization ID of the pseudo-random sequence c(i) is applied to all of the multiple new SRS resources.

[0061] In some configurations, the SRS port p iComb offset

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[0062] In some cases, SRS port p i Comb offset for

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[0063] In some examples, the configuration or selection of M by the base station may be TC , max(L TC ), K TC , and max(K TCThat is, in some examples, the integer may be determined by at least one of L TC , L TC In some examples, the integer M may be determined based on at least one of: a maximum of

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[0064] FIG. 4 is a diagram illustrating the configuration of comb offset hopping with various arrangements. FIG. 5 is a diagram illustrating the implementation of comb offset hopping with various arrangements. Orthogonal resources 401, 402, 403, 404, 405, 406, 407, and 408 correspond to combinations of comb offsets (e.g., 0, 1, 2, or 3) and cyclic shifts (e.g., 0 or 6).

[0065] In Figs. 4 and 5, the transmission comb K TCis 4. When comb offset hopping is not enabled, the legacy 2-port SRS resource occupies 1 comb offset (i.e.

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[0066] As shown in Figure 4, the composition of the subset of comb offsets is

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[0067] As shown in FIG. 5, to perform comb offset hopping, implementation 510 includes:

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[0068] FIG. 6 is a diagram illustrating the configuration of comb offset hopping with various arrangements. FIG. 7 is a diagram illustrating the implementation of comb offset hopping with various arrangements. Orthogonal resources 601, 602, 603, 604, 605, 606, 607, 608, 609, 610, 611, 612, 613, 614, 615, and 616 correspond to combinations of comb offsets (e.g., 0, 1, 2, 3, 4, 5, 6, or 7) and cyclic shifts (e.g., 0 or 6).

[0069] In Figs. 6 and 7, the transmission comb K TC is 8. When comb offset hopping is not enabled, the legacy 4-port SRS resource occupies 2 comb offsets (i.e.,

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[0070] As shown in Figure 6, the composition of the subset of comb offsets is

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[0071] As shown in FIG. 7, to perform comb offset hopping, implementation 710 includes:

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[0072] In Figs. 8 and 9, the transmission comb K TC is 4. When comb offset is not enabled, the legacy 2-port SRS resource occupies 1 comb offset (i.e.,

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[0073] 8, the configuration of the subset of comb offsets includes X = 2. When comb offset hopping is enabled, the orthogonal resources occupied by the new SRS resource belong to the orthogonal resources 801, 802, 805, 806.

[0074] As shown in FIG. 9, to perform comb offset hopping, execution 910 includes:

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[0075] FIG. 10 is a diagram showing the configuration of comb offset hopping with various arrangements. FIG. 11 is a diagram showing the implementation of comb offset hopping with various arrangements. Each of orthogonal resources 1001, 1002, 1003, 1004, 1005, 1006, 1007, 1008, 1009, 1010, 1011, 1012, 1013, 1014, 1015, and 1016 corresponds to a combination of a comb offset (e.g., 0, 1, 2, 3, 4, 5, 6, or 7) and a cyclic shift (e.g., 0 or 6).

[0076] In Figs. 10 and 11, the transmission comb K TC is 8. When comb offset hopping is not enabled, the legacy 4-port SRS resource occupies 2 comb offsets (i.e.,

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[0077] 10, the configuration of the subset of comb offsets includes X = 2. When comb offset hopping is enabled, the orthogonal resources occupied by the new SRS resource belong to orthogonal resources 1001, 1002, 1005, 1006, 1009, 1010, 1015, and 1016.

[0078] As shown in FIG. 11, to perform comb offset hopping, operation 1110 includes:

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[0079] In some deployments, for SRS resources configured with cyclic shift hopping, the SRS port p i Circular shift of

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[0080] The subset of cyclic shifts is determined by the upper layer parameter transmissionComb and the cyclic shift hopping offset

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[0081] In some instances,

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[0082] In some instances,

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[0083] In some examples, the cyclic shift hopping granularity is an integer equal to or greater than 1. The cyclic shift hopping granularity is selected from a set of candidate values. The set of candidate values ​​is determined based on the maximum number of cyclic shifts. For example, the candidate values ​​of X are {1, 2, 4, 6, 8, 12}.

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[0086] Using higher layer parameters

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[0088] In some deployments, the multiple new SRS resources may be scheduled across overlapping OFDM symbols and overlapping frequency ranges (e.g., RBs) to maintain orthogonality between the new SRS ports, and different new SRS resources may be configured with different subsets of the cyclic shift. In some examples, the multiple new SRS resources are scheduled across overlapping OFDM symbols. The new SRS ports are orthogonal to one another. Different ones of the multiple new SRS resources are configured with different subsets of the cyclic shift.

[0089] In some deployments, the multiple new SRS resources are scheduled across overlapping OFDM symbols and overlapping frequency ranges (e.g., RBs) to maintain orthogonality between the new SRS ports, and the different new SRS resources may be configured with the same subset of cyclic shifts. It is expected that the same initialization ID of c(i) is applied to all the new SRS resources. In some examples, the multiple new SRS resources are scheduled across overlapping orthogonal OFDM symbols. The new SRS ports are orthogonal to each other. The different ones of the multiple new SRS resources are configured with the same subset of cyclic shifts. The same initialization ID of the pseudo-random sequence c(i) is applied to all of the multiple new SRS resources.

[0090] In some configurations, the SRS port p i Circular shift of

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[0091] In some cases, the SRS port

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[0092] In some examples, the configuration or selection of M by the base station may include:

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[0093] FIG. 12 is a diagram illustrating the configuration of cyclic shift hopping with various arrangements. FIG. 13 is a diagram illustrating the implementation of cyclic shift hopping with various arrangements. Each of the orthogonal resources 1201, 1202, 1203, 1204, 1205, 1206, 1207, and 1208 is defined by a cyclic shift (e.g., 0, 1, 2, 3, 4, 5, 6, or 7) and a comb offset (e.g., 0).

[0094] In Figures 12 and 13, the maximum number of circular shifts

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[0095] As shown in Figure 12, the construction of a subset of cyclic shifts is

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[0096] As shown in FIG. 13, to perform cyclic shift hopping, operation 1310 includes:

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[0097] FIG. 14 is a diagram illustrating the configuration of cyclic shift hopping with various arrangements. FIG. 15 is a diagram illustrating the implementation of cyclic shift hopping with various arrangements. Each of the orthogonal resources 1401, 1402, 1403, 1404, 1405, 1406, 1407, 1408, 1409, 1410, 1411, 1412, 1413, 1414, 1415, 1416, 1417, 1418, 1419, 1420, 1421, 1422, 1423, and 1424 is defined by a cyclic shift (e.g., 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, or 11) and a comb offset (e.g., 0 or 2).

[0098] In Figures 14 and 15, the maximum number of circular shifts

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[0099] As shown in Figure 14, the construction of a subset of cyclic shifts is

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[0100] As shown in FIG. 15, to perform cyclic shift hopping, operation 1510 includes:

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[0101] FIG. 16 is a diagram illustrating the arrangement of cyclic shift hopping according to various arrangements. FIG. 17 is a diagram illustrating the implementation of cyclic shift hopping according to various arrangements. Each of the orthogonal resources 1601, 1602, 1603, 1604, 1605, 1606, 1607, and 1608 is defined by a cyclic shift (e.g., 0, 1, 2, 3, 4, 5, 6, or 7) and a comb offset (e.g., 0).

[0102] In Figures 16 and 17, the maximum number of circular shifts

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[0103] 16, the configuration of the cyclic shift subset includes X = 2. When cyclic shift hopping is enabled, the orthogonal resources occupied by the new SRS resource belong to orthogonal resources 1601, 1603, 1605, and 1607.

[0104] As shown in FIG. 17, to perform cyclic shift hopping, operation 1710 includes:

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[0105] FIG. 18 is a diagram illustrating the configuration of cyclic shift hopping with various arrangements. FIG. 19 is a diagram illustrating the implementation of cyclic shift hopping with various arrangements. Each of the orthogonal resources 1801, 1802, 1803, 1804, 1805, 1806, 1807, 1808, 1809, 1810, 1811, 1812, 1813, 1814, 1815, 1816, 1817, 1818, 1819, 1820, 1821, 1822, 1823, and 1824 is defined by a cyclic shift (e.g., 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, or 11) and a comb offset (e.g., 0 or 2).

[0106] In Figures 18 and 19, the maximum number of circular shifts

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[0107] 18, the configuration of the cyclic shift subset includes X = 3. When cyclic shift hopping is enabled, the orthogonal resources occupied by the new SRS resource belong to orthogonal resources 1803, 1804, 1809, 1810, 1815, 1816, 1821, and 1822.

[0108] As shown in FIG. 19, to perform cyclic shift hopping, operation 1910 includes:

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[0109] Although various configurations of the present solution have been described above, it should be understood that they are presented only as examples and not as limitations. Similarly, various figures may depict example architectures or configurations provided to enable those skilled in the art to appreciate the exemplary features and functionality of the present solution. However, such skilled in the art will appreciate that the solution is not limited to the depicted example architectures or configurations, but may be implemented using various alternative architectures and configurations. Furthermore, as will be appreciated by those skilled in the art, one or more features of some configurations may be combined with one or more features of another configuration described herein. Thus, the breadth and scope of the present disclosure should not be limited by any of the exemplary configurations described above.

[0110] It is also understood that any reference to an element herein using a designation 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 instances of an element. Thus, a reference to a first and a second element does not imply that only two elements may be used or that the first element must precede the second element in any way.

[0111] Furthermore, those skilled in the art will understand that information and signals may be represented using any of a variety of different technologies and techniques. For example, the data, instructions, commands, information, signals, bits, and symbols that may be referred to in the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0112] Those skilled in the art will further appreciate that any of the various exemplary logic blocks, modules, processors, means, circuits, methods, and functions described in connection with the aspects disclosed herein can be implemented by electronic hardware (e.g., digital implementation, analog implementation, or a combination of the two), firmware, various forms of programs or design code incorporating instructions (which may be conveniently referred to herein as "software" or "software modules"), or any combination of these technologies. To clearly illustrate this interchangeability of hardware, firmware, and software, various exemplary 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 particular application and design constraints imposed on the overall system. Those skilled in the art may implement the described functionality in various ways for each particular application, but such implementation decisions do not depart from the scope of this disclosure.

[0113] Further, those skilled in the art will appreciate that the various exemplary logic blocks, modules, devices, components, and circuits described herein may be implemented in or by an integrated circuit (IC), which may include 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 for communicating with various components in a network or device. The 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, multiple microprocessors, one or more microprocessors in combination with a DSP core, or any other suitable configuration for performing the functions described herein.

[0114] When implemented in software, the functions can be stored as one or more instructions or codes on a computer-readable medium. Thus, the steps of a method or algorithm disclosed herein can be implemented as software stored on a computer-readable medium. Computer-readable media includes both computer storage media and communication media, including any medium that can enable a computer program or code to be transferred from one place to another. A storage medium can be any available medium that can be accessed by a computer. By way of example and not limitation, such computer-readable media can 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 desired program code in the form of instructions or data structures and that can be accessed by a computer.

[0115] As used herein, the term "module" refers to software, firmware, hardware, and any combination of these elements for performing the associated functions described herein. Moreover, for purposes of discussion, the various modules are described as individual modules. However, as would be apparent to one of ordinary skill in the art, two or more modules may be combined to form a single module that performs associated functions according to the implementation of the present solution.

[0116] Further, memory or other storage and communication components may be used in the arrangement of the solution. It will be appreciated that for clarity, the above description has described the arrangement of the 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 detracting from the solution. For example, functions shown to be performed by separate processing logic elements or controllers may be performed by the same processing logic element or controller. Thus, references to specific functional units do not indicate a strict logical or physical structure or organization, but merely to suitable means for providing the described functionality.

[0117] Various modifications to the implementations described in this disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other implementations without departing from the scope of the present disclosure. Thus, the present disclosure is not intended to be limited to the implementations 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. 1. A wireless communication method, the method comprising: receiving, by the wireless communication device, from the network device, at least one of a first parameter indicative of a subset of comb offsets or a second parameter indicative of a subset of cyclic shifts; determining, by the wireless communication device, at least one of a comb offset or a cyclic shift for each Sounding Reference Signal (SRS) port associated with an SRS resource based on a transmission time instant and the at least one of the first parameter or the second parameter; transmitting, by the wireless communication device, an SRS to the network device according to the at least one of the comb offset or the cyclic shift; A method comprising:

2. 2. The method of claim 1, wherein the comb offset for each SRS port associated with the SRS resource is determined based on at least one of an initial comb offset, the transmission time instant of a transmission opportunity for the SRS, a pseudo-random sequence, or the first parameter indicative of the subset of the comb offsets.

3. The first parameter is a parameter transmissionComb indicating the maximum number of transmission combs and cyclic shifts of the SRS resource, an initial comb offset, and an initial cyclic shift of each SRS port associated with the SRS resource; a set of comb offset hopping offsets, and Comb offset hopping granularity The method of claim 2 , comprising at least one of:

4. 4. The method of claim 3, wherein the set of comb-offset hopping offsets comprises a number of comb-offset hopping offsets, the number being less than or equal to the transmit comb, and each of the comb-offset hopping offsets is an integer greater than or equal to 0 and less than or equal to the transmit comb minus 1.

5. The method of claim 3 , wherein the wireless communication device receives a bitmap from the network device indicating the set of comb offset hopping offsets, the length of the bitmap being equal to the transmission comb.

6. the comb offset hopping granularity is an integer equal to or greater than 1; the comb offset hopping granularity is selected from a set of candidate values; The method of claim 3 , wherein the set of candidate values ​​is determined based on the transmission comb.

7. the set of comb offset hopping offsets or the comb offset hopping granularity is configured for the wireless communication device by the network device using at least one higher layer parameter; The set of comb offset hopping offsets or the comb offset hopping granularity is indicated using the parameter transmissionComb; and The set of comb-offset hopping offsets or the comb-offset hopping granularity are fixed parameters. The method according to claim 3 .

8. the set of comb offset hopping offsets or the comb offset hopping granularity is configured for the wireless communication device by the network device using at least one higher layer parameter; The method of claim 3 , wherein the at least one higher layer parameter is configured by the network device for each SRS resource of a plurality of SRS resources.

9. the set of comb offset hopping offsets or the comb offset hopping granularity is configured for the wireless communication device by the network device using at least one higher layer parameter; The set of comb offset hopping offsets or the comb offset hopping granularity is The parameter transmissionComb, or At least one comb offset or at least one cyclic shift occupied by at least one legacy SRS resource on at least one overlapping orthogonal frequency division multiplexing (OFDM) symbol The method of claim 3 , wherein the determined by the network device is based on at least one of:

10. the set of comb offset hopping offsets or the comb offset hopping granularity is configured for the wireless communication device by the network device using transmissionComb; The set of comb offset hopping offsets is [Number 301] is determined in accordance with The comb offset hopping granularity is [Number 302] is determined in accordance with Where: [Number 303] is a parameter in the transmissionComb parameter indicating the starting cyclic shift, [Number 304] is the maximum number of cyclic shifts, [Number 305] is the number of antenna ports, and K ＴＣ The method of claim 3 , wherein: is the transmission comb.

11. A plurality of new SRS resources are scheduled across overlapping orthogonal frequency division multiplexing (OFDM) symbols; The new SRS ports are orthogonal to each other, The method of claim 3 , wherein different ones of the plurality of new SRS resources are configured with different subsets of comb offsets.

12. A plurality of new SRS resources are scheduled across overlapping orthogonal frequency division multiplexing (OFDM) symbols; The new SRS ports are orthogonal to each other, Different ones of the new SRS resources are configured with the same subset of comb offsets; 4. The method of claim 3, wherein the same initialization identifier (ID) of a pseudo-random sequence is applied to all of the multiple new SRS resources.

13. The SRS port p ｉ For the comb offset [Number 306] teeth, [Number 307] is determined by where [Number 308] is SRS port p ｉ is the initial comb offset of K ＴＣ is the transmission comb, [Number 309] is a comb-offset hopping offset belonging to the set of comb-offset hopping offsets, The comb offset hopping offset is as follows: [Number 310] where [Number 311] teeth, [Number 312] Denote the l-th element of [Number 313] is the set of comb offset hopping offsets, and L ＴＣ teeth, [Number 314] is the number of comb offset hopping offsets included in [Number 315] where X is the comb offset hopping granularity, [Number 316] is a pseudo-random integer determined by at least one of the transmission time of an SRS transmission opportunity, the pseudo-random sequence, and an integer. The method of claim 2, wherein the distance between the first and second electrodes can be determined by:

14. The integer is L ＴＣ , L ＴＣ 14. The method of claim 13, wherein the maximum of the transmission comb is determined based on at least one of: a maximum of the transmission comb;

15. 2. The method of claim 1, wherein the cyclic shift for each SRS port associated with the SRS resource is determined based on at least one of an initial cyclic shift, the transmission time instant of a transmission opportunity for the SRS, a pseudo-random sequence, and the second parameter indicative of the subset of the cyclic shifts.

16. The second parameter is a parameter transmissionComb indicating the maximum number of transmission combs and cyclic shifts of the SRS resource, an initial comb offset, and an initial cyclic shift of each SRS port associated with the SRS resource; a set of cyclic shift hopping offsets, and 20. The method of claim 15, further comprising at least one of a circular shift granularity.

17. 17. The method of claim 16, wherein the set of cyclic shift offsets comprises a number of cyclic shift offsets, the number being less than or equal to the maximum number of cyclic shifts, and each of the cyclic shift hopping offsets is an integer greater than or equal to 0 and less than or equal to the maximum number of cyclic shifts minus 1.

18. 17. The method of claim 16, wherein the wireless communication device receives a bitmap from the network device indicating the set of cyclic shift hopping offsets, the length of the bitmap being equal to the maximum number of cyclic shifts.

19. The cyclic shift hopping granularity is an integer equal to or greater than 1; the cyclic shift hopping granularity is selected from a set of candidate values; The method of claim 16 , wherein the set of candidate values ​​is determined based on the maximum number of cyclic shifts.

20. the set of cyclic shift hopping offsets or the cyclic shift hopping granularity is configured for the wireless communication device by the network device using at least one higher layer parameter; The set of cyclic shift hopping offsets or the cyclic shift hopping granularity is indicated using the transmissionComb; or The set of cyclic shift offsets or the cyclic shift hopping granularity are fixed parameters.

17. The method of claim 16,

21. the set of cyclic shift hopping offsets or the cyclic shift hopping granularity is configured for the wireless communication device by the network device using at least one higher layer parameter; 17. The method of claim 16, wherein the at least one higher layer parameter is configured by the network device for each SRS resource of a plurality of SRS resources.

22. the set of cyclic shift hopping offsets or the cyclic shift hopping granularity is configured for the wireless communication device by a network device using at least one higher layer parameter; The set of cyclic shift hopping offsets or the cyclic shift hopping granularity may be The parameter transmissionComb, or At least one comb offset or at least one cyclic shift occupied by at least one legacy SRS resource on at least one overlapping orthogonal frequency division multiplexing (OFDM) symbol 20. The method of claim 16, wherein the network device is selected based on at least one of:

23. the set of cyclic shift hopping offsets or the cyclic shift hopping granularity is indicated by the network device to the wireless communication device using transmissionComb; The set of cyclic shift offsets is [Number 317] is determined in accordance with The cyclic shift hopping granularity is [Number 318] is determined in accordance with Where: [Number 319] is a parameter in the transmissionComb parameter indicating the starting cyclic shift, [Number 320] is the maximum number of circular shifts, [Number 321] The method of claim 16 , wherein: n is the number of antenna ports.

24. A plurality of new SRS resources are scheduled across overlapping orthogonal frequency division multiplexing (OFDM) symbols; The new SRS ports are orthogonal to each other, The method of claim 16 , wherein different ones of the plurality of new SRS resources are configured with different subsets of cyclic shifts.

25. A plurality of new SRS resources are scheduled across overlapping orthogonal frequency division multiplexing (OFDM) symbols; The new SRS ports are orthogonal to each other, Different ones of the new SRS resources are configured with the same subset of cyclic shifts; 17. The method of claim 16, wherein a same initialization identifier (ID) of a pseudo-random sequence is applied to all of the multiple new SRS resources.

26. The cyclic shift for the SRS port i [Number 322] teeth, [Number 323] is determined by Where: [Number 324] is a cyclic shift hopping offset belonging to the set of cyclic shift offsets, [Number 325] is the initial cyclic shift for the SRS port i, [Number 326] is the maximum number of cyclic shifts, The hopping offset is as follows: [Number 327] Where: [Number 328] teeth, [Number 329] is the l-th element of [Number 330] is the set of cyclic shift hopping offsets, and L ＣＳ is the number of cyclic shift hopping offsets in the set of cyclic shift hopping offsets; or [Number 331] where X is the cyclic shift hopping granularity, [Number 332] is a pseudo-random integer determined by at least one of the transmission time of an SRS transmission opportunity, the pseudo-random sequence, and an integer. The method of claim 16, wherein the distance between the first and second electrodes can be determined by:

27. The integer is L ＣＳ , L ＣＳ 27. The method of claim 26, wherein the maximum number of cyclic shifts is determined based on at least one of a maximum of , the maximum number of cyclic shifts, and a maximum of the maximum number of cyclic shifts.

28. A wireless communication device comprising at least one processor and a memory, the at least one processor configured to read code from the memory and to perform the method of claim 1.

29. 13. A computer program product comprising computer readable program medium code stored thereon, the code, when executed by at least one processor, causing the at least one processor to perform the method of claim 1.

30. 1. A wireless communication method, the method comprising: transmitting, by a network device, at least one of a first parameter indicating a subset of comb offsets or a second parameter indicating a subset of cyclic shifts to a wireless communication device, the wireless communication device determining at least one of a comb offset or a cyclic shift for each sounding reference signal (SRS) port associated with an SRS resource based on a transmission time and the at least one of the first parameter or the second parameter; receiving, by the network device, an SRS from the wireless communication device according to the at least one of the comb offset or the cyclic shift; A wireless communication method comprising:

31. 31. A wireless communications device comprising at least one processor and a memory, the at least one processor configured to read code from the memory and perform the method of claim 30.

32. 31. A computer program product comprising computer readable program medium code stored thereon, the code, when executed by at least one processor, causing the at least one processor to perform the method of claim 30.

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